sys/bus/cam/scsi/scsi_da.c

   1 /*
   2  * Implementation of SCSI Direct Access Peripheral driver for CAM.
   3  *
   4  * Copyright (c) 1997 Justin T. Gibbs.
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions, and the following disclaimer,
  12  *    without modification, immediately at the beginning of the file.
  13  * 2. The name of the author may not be used to endorse or promote products
  14  *    derived from this software without specific prior written permission.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  19  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
  20  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  26  * SUCH DAMAGE.
  27  *
  28  * $FreeBSD: src/sys/cam/scsi/scsi_da.c,v 1.42.2.36 2003/05/17 21:48:30 njl Exp $
  29  */
  30
  31 #ifdef _KERNEL
  32 #include "opt_hw_wdog.h"
  33 #endif /* _KERNEL */
  34
  35 #include <sys/param.h>
  36
  37 #ifdef _KERNEL
  38 #include <sys/systm.h>
  39 #include <sys/kernel.h>
  40 #include <sys/buf.h>
  41 #include <sys/sysctl.h>
  42 #endif /* _KERNEL */
  43
  44 #include <sys/devicestat.h>
  45 #include <sys/conf.h>
  46 #include <sys/disk.h>
  47 #include <sys/eventhandler.h>
  48 #include <sys/malloc.h>
  49 #include <sys/cons.h>
  50
  51 #include <machine/md_var.h>
  52
  53 #include <vm/vm.h>
  54 #include <vm/pmap.h>
  55
  56 #ifndef _KERNEL
  57 #include <stdio.h>
  58 #include <string.h>
  59 #endif /* _KERNEL */
  60
  61 #include <cam/cam.h>
  62 #include <cam/cam_ccb.h>
  63 #include <cam/cam_extend.h>
  64 #include <cam/cam_periph.h>
  65 #include <cam/cam_xpt_periph.h>
  66
  67 #include <cam/scsi/scsi_message.h>
  68
  69 #ifndef _KERNEL
  70 #include <cam/scsi/scsi_da.h>
  71 #endif /* !_KERNEL */
  72
  73 #ifdef _KERNEL
  74 typedef enum {
  75         DA_STATE_PROBE,
  76         DA_STATE_NORMAL
  77 } da_state;
  78
  79 typedef enum {
  80         DA_FLAG_PACK_INVALID    = 0x001,
  81         DA_FLAG_NEW_PACK        = 0x002,
  82         DA_FLAG_PACK_LOCKED     = 0x004,
  83         DA_FLAG_PACK_REMOVABLE  = 0x008,
  84         DA_FLAG_TAGGED_QUEUING  = 0x010,
  85         DA_FLAG_NEED_OTAG       = 0x020,
  86         DA_FLAG_WENT_IDLE       = 0x040,
  87         DA_FLAG_RETRY_UA        = 0x080,
  88         DA_FLAG_OPEN            = 0x100
  89 } da_flags;
  90
  91 typedef enum {
  92         DA_Q_NONE               = 0x00,
  93         DA_Q_NO_SYNC_CACHE      = 0x01,
  94         DA_Q_NO_6_BYTE          = 0x02
  95 } da_quirks;
  96
  97 typedef enum {
  98         DA_CCB_PROBE            = 0x01,
  99         DA_CCB_BUFFER_IO        = 0x02,
 100         DA_CCB_WAITING          = 0x03,
 101         DA_CCB_DUMP             = 0x04,
 102         DA_CCB_TYPE_MASK        = 0x0F,
 103         DA_CCB_RETRY_UA         = 0x10
 104 } da_ccb_state;
 105
 106 /* Offsets into our private area for storing information */
 107 #define ccb_state       ppriv_field0
 108 #define ccb_bp          ppriv_ptr1
 109
 110 struct disk_params {
 111         u_int8_t  heads;
 112         u_int16_t cylinders;
 113         u_int8_t  secs_per_track;
 114         u_int32_t secsize;      /* Number of bytes/sector */
 115         u_int32_t sectors;      /* total number sectors */
 116 };
 117
 118 struct da_softc {
 119         struct   buf_queue_head buf_queue;
 120         struct   devstat device_stats;
 121         SLIST_ENTRY(da_softc) links;
 122         LIST_HEAD(, ccb_hdr) pending_ccbs;
 123         da_state state;
 124         da_flags flags;
 125         da_quirks quirks;
 126         int      minimum_cmd_size;
 127         int      ordered_tag_count;
 128         struct   disk_params params;
 129         struct   disk disk;
 130         union    ccb saved_ccb;
 131 };
 132
 133 struct da_quirk_entry {
 134         struct scsi_inquiry_pattern inq_pat;
 135         da_quirks quirks;
 136 };
 137
 138 static const char quantum[] = "QUANTUM";
 139 static const char microp[] = "MICROP";
 140
 141 static struct da_quirk_entry da_quirk_table[] =
 142 {
 143         {
 144                 /*
 145                  * Fujitsu M2513A MO drives.
 146                  * Tested devices: M2513A2 firmware versions 1200 & 1300.
 147                  * (dip switch selects whether T_DIRECT or T_OPTICAL device)
 148                  * Reported by: W.Scholten <whs@xs4all.nl>
 149                  */
 150                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "FUJITSU", "M2513A", "*"},
 151                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 152         },
 153         {
 154                 /* See above. */
 155                 {T_OPTICAL, SIP_MEDIA_REMOVABLE, "FUJITSU", "M2513A", "*"},
 156                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 157         },
 158         {
 159                 /*
 160                  * This particular Fujitsu drive doesn't like the
 161                  * synchronize cache command.
 162                  * Reported by: Tom Jackson <toj@gorilla.net>
 163                  */
 164                 {T_DIRECT, SIP_MEDIA_FIXED, "FUJITSU", "M2954*", "*"},
 165                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 166
 167         },
 168         {
 169                 /*
 170                  * This drive doesn't like the synchronize cache command
 171                  * either.  Reported by: Matthew Jacob <mjacob@feral.com>
 172                  * in NetBSD PR kern/6027, August 24, 1998.
 173                  */
 174                 {T_DIRECT, SIP_MEDIA_FIXED, microp, "2217*", "*"},
 175                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 176         },
 177         {
 178                 /*
 179                  * This drive doesn't like the synchronize cache command
 180                  * either.  Reported by: Hellmuth Michaelis (hm@kts.org)
 181                  * (PR 8882).
 182                  */
 183                 {T_DIRECT, SIP_MEDIA_FIXED, microp, "2112*", "*"},
 184                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 185         },
 186         {
 187                 /*
 188                  * Doesn't like the synchronize cache command.
 189                  * Reported by: Blaz Zupan <blaz@gold.amis.net>
 190                  */
 191                 {T_DIRECT, SIP_MEDIA_FIXED, "NEC", "D3847*", "*"},
 192                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 193         },
 194         {
 195                 /*
 196                  * Doesn't like the synchronize cache command.
 197                  */
 198                 {T_DIRECT, SIP_MEDIA_FIXED, quantum, "MAVERICK 540S", "*"},
 199                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 200         },
 201         {
 202                 /*
 203                  * Doesn't like the synchronize cache command.
 204                  */
 205                 {T_DIRECT, SIP_MEDIA_FIXED, quantum, "LPS525S", "*"},
 206                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 207         },
 208         {
 209                 /*
 210                  * Doesn't work correctly with 6 byte reads/writes.
 211                  * Returns illegal request, and points to byte 9 of the
 212                  * 6-byte CDB.
 213                  * Reported by:  Adam McDougall <bsdx@spawnet.com>
 214                  */
 215                 {T_DIRECT, SIP_MEDIA_FIXED, quantum, "VIKING 4*", "*"},
 216                 /*quirks*/ DA_Q_NO_6_BYTE
 217         },
 218         {
 219                 /*
 220                  * See above.
 221                  */
 222                 {T_DIRECT, SIP_MEDIA_FIXED, quantum, "VIKING 2*", "*"},
 223                 /*quirks*/ DA_Q_NO_6_BYTE
 224         },
 225
 226         /* Below a list of quirks for USB devices supported by umass. */
 227         {
 228                 /*
 229                  * This USB floppy drive uses the UFI command set. This
 230                  * command set is a derivative of the ATAPI command set and
 231                  * does not support READ_6 commands only READ_10. It also does
 232                  * not support sync cache (0x35).
 233                  */
 234                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Y-E DATA", "USB-FDU", "*"},
 235                 /*quirks*/ DA_Q_NO_6_BYTE|DA_Q_NO_SYNC_CACHE
 236         },
 237         {
 238                 /* Another USB floppy */
 239                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "MATSHITA", "FDD CF-VFDU*","*"},
 240                 /*quirks*/ DA_Q_NO_6_BYTE|DA_Q_NO_SYNC_CACHE
 241         },
 242         {
 243                 /*
 244                  * Sony Memory Stick adapter MSAC-US1 and
 245                  * Sony PCG-C1VJ Internal Memory Stick Slot (MSC-U01).
 246                  * Make all sony MS* products use this quirk.
 247                  */
 248                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Sony", "MS*", "*"},
 249                 /*quirks*/ DA_Q_NO_6_BYTE|DA_Q_NO_SYNC_CACHE
 250         },
 251         {
 252                 /*
 253                  * Sony Memory Stick adapter for the CLIE series
 254                  * of PalmOS PDA's
 255                  */
 256                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Sony", "CLIE*", "*"},
 257                 /*quirks*/ DA_Q_NO_6_BYTE|DA_Q_NO_SYNC_CACHE
 258         },
 259         {
 260                 /*
 261                  * Sony DSC cameras (DSC-S30, DSC-S50, DSC-S70)
 262                  */
 263                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Sony", "Sony DSC", "*"},
 264                 /*quirks*/ DA_Q_NO_6_BYTE|DA_Q_NO_SYNC_CACHE
 265         },
 266         {
 267                 /*
 268                  * Maxtor 3000LE USB Drive
 269                  */
 270                 {T_DIRECT, SIP_MEDIA_FIXED, "MAXTOR*", "K040H2*", "*"},
 271                 /*quirks*/ DA_Q_NO_6_BYTE
 272         },
 273         {
 274                 /*
 275                  * LaCie USB drive, among others
 276                  */
 277                 {T_DIRECT, SIP_MEDIA_FIXED, "Maxtor*", "D080H4*", "*"},
 278                 /*quirks*/ DA_Q_NO_6_BYTE
 279         },
 280         {
 281                 {T_OPTICAL, SIP_MEDIA_REMOVABLE, "FUJITSU", "MCF3064AP", "*"},
 282                 /*quirks*/ DA_Q_NO_6_BYTE
 283         },
 284         {
 285                 /*
 286                  * Microtech USB CameraMate
 287                  */
 288                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "eUSB    Compact*",
 289                  "Compact Flash*", "*"},
 290                 /*quirks*/ DA_Q_NO_6_BYTE|DA_Q_NO_SYNC_CACHE
 291         },
 292         {
 293                 /*
 294                  * The vendor, product and version strings coming from the
 295                  * controller are null terminated instead of being padded with
 296                  * spaces. The trailing wildcard character '*' is required.
 297                  */
 298                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "SMSC*", "USB FDC*","*"},
 299                 /*quirks*/ DA_Q_NO_6_BYTE|DA_Q_NO_SYNC_CACHE
 300         },
 301         {
 302                 /*
 303                  * Olympus digital cameras (C-3040ZOOM, C-2040ZOOM, C-1)
 304                  */
 305                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "OLYMPUS", "C-*", "*"},
 306                 /*quirks*/ DA_Q_NO_6_BYTE|DA_Q_NO_SYNC_CACHE
 307         },
 308         {
 309                 /*
 310                  * Olympus digital cameras (D-370)
 311                  */
 312                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "OLYMPUS", "D-*", "*"},
 313                 /*quirks*/ DA_Q_NO_6_BYTE
 314         },
 315         {
 316                 /*
 317                  * Olympus digital cameras (E-100RS, E-10).
 318                  */
 319                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "OLYMPUS", "E-*", "*"},
 320                 /*quirks*/ DA_Q_NO_6_BYTE|DA_Q_NO_SYNC_CACHE
 321         },
 322         {
 323                 /*
 324                  * KingByte Pen Drives
 325                  */
 326                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "NO BRAND", "PEN DRIVE", "*"},
 327                 /*quirks*/ DA_Q_NO_6_BYTE|DA_Q_NO_SYNC_CACHE
 328         },
 329         {
 330                 /*
 331                  * FujiFilm Camera
 332                  */
 333                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "FUJIFILMUSB-DRIVEUNIT",
 334                  "USB-DRIVEUNIT", "*"},
 335                 /*quirks*/ DA_Q_NO_6_BYTE|DA_Q_NO_SYNC_CACHE
 336         },
 337         {
 338                 /*
 339                  * Nikon Coolpix E775/E995 Cameras
 340                  */
 341                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "NIKON", "NIKON DSC E*", "*"},
 342                 /*quirks*/ DA_Q_NO_6_BYTE
 343         },
 344         {
 345                 /*
 346                  * Nikon Coolpix E885 Camera
 347                  */
 348                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Nikon", "Digital Camera", "*"},
 349                 /*quirks*/ DA_Q_NO_6_BYTE
 350         },
 351         {
 352                 /*
 353                  * SimpleTech FlashLink UCF-100
 354                  */
 355                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "OEI-USB", "CompactFlash", "*"},
 356                 /*quirks*/ DA_Q_NO_6_BYTE
 357         },
 358         {
 359                 /*
 360                  * Minolta Dimage 2330
 361                  */
 362                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "MINOLTA", "DIMAGE 2330*", "*"},
 363                 /*quirks*/ DA_Q_NO_6_BYTE
 364         },
 365         {
 366                 /*
 367                  * Minolta Dimage E203
 368                  */
 369                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "MINOLTA", "DiMAGE E203", "*"},
 370                 /*quirks*/ DA_Q_NO_6_BYTE|DA_Q_NO_SYNC_CACHE
 371         },
 372         {
 373                 /*
 374                  * DIVA USB Mp3 Player.
 375                  * PR: kern/33638
 376                  */
 377                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "DIVA USB", "Media Reader","*"},
 378                 /*quirks*/ DA_Q_NO_6_BYTE
 379         },
 380         {
 381                 /*
 382                  * Daisy Technology PhotoClip USB Camera
 383                  */
 384                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Digital", "World   DMC","*"},
 385                 /*quirks*/ DA_Q_NO_6_BYTE
 386         },
 387         {
 388                 /*
 389                  * Apacer HandyDrive
 390                  * PR: kern/43627
 391                  */
 392                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Apacer", "HandyDrive", "*"},
 393                 /*quirks*/ DA_Q_NO_6_BYTE|DA_Q_NO_SYNC_CACHE
 394         },
 395         {
 396                 /*
 397                  * Daisy Technology PhotoClip on Zoran chip
 398                  * PR: kern/43580
 399                  */
 400                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "ZORAN", "COACH", "*"},
 401                 /*quirks*/ DA_Q_NO_6_BYTE|DA_Q_NO_SYNC_CACHE
 402         },
 403         {
 404                 /*
 405                  * HP 315 Digital Camera
 406                  * PR: kern/41010
 407                  */
 408                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "HP", "USB CAMERA", "*"},
 409                 /*quirks*/ DA_Q_NO_6_BYTE
 410         },
 411         {
 412                 /*
 413                  * Fujitsu-Siemens Memorybird pen drive
 414                  * PR: kern/34712
 415                  */
 416                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Fujitsu", "Memorybird", "*"},
 417                 /*quirks*/ DA_Q_NO_6_BYTE
 418         },
 419         {
 420                 /*
 421                  * Sony USB Key-Storage
 422                  * PR: kern/46386
 423                  */
 424                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Sony", "Storage Media", "*"},
 425                 /*quirks*/ DA_Q_NO_6_BYTE|DA_Q_NO_SYNC_CACHE
 426         },
 427         {
 428                 /*
 429                  * Lexar Media Jumpdrive
 430                  * PR: kern/47006
 431                  */
 432                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "LEXAR", "DIGITAL FILM", "*"},
 433                 /*quirks*/ DA_Q_NO_6_BYTE
 434         },
 435         {
 436                 /*
 437                  * Pentax USB Optio 230 camera
 438                  * PR: kern/46369
 439                  */
 440                 {T_DIRECT, SIP_MEDIA_REMOVABLE,
 441                  "PENTAX", "DIGITAL_CAMERA", "*"},
 442                 /*quirks*/ DA_Q_NO_6_BYTE
 443         },
 444         {
 445                 /*
 446                  * Casio QV-R3 USB camera (uses Pentax chip as above)
 447                  * PR: kern/46545
 448                  */
 449                 {T_DIRECT, SIP_MEDIA_REMOVABLE,
 450                  "CASIO", "DIGITAL_CAMERA", "*"},
 451                 /*quirks*/ DA_Q_NO_6_BYTE
 452         },
 453         {
 454                 /*
 455                  * M-Systems DiskOnKey USB flash key
 456                  * PR: kern/47793
 457                  */
 458                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "M-Sys", "DiskOnKey", "*"},
 459                 /*quirks*/ DA_Q_NO_6_BYTE
 460         },
 461         {
 462                 /*
 463                  * SanDisk ImageMate (I, II, ...) compact flash
 464                  * PR: kern/47877
 465                  */
 466                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "SanDisk", "ImageMate*", "*"},
 467                 /*quirks*/ DA_Q_NO_6_BYTE
 468         },
 469         {
 470                 /*
 471                  * Feiya "slider" dual-slot flash reader. The vendor field
 472                  * is blank so this may match other devices.
 473                  * PR: kern/50020
 474                  */
 475                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "", "USB CARD READER", "*"},
 476                 /*quirks*/ DA_Q_NO_6_BYTE
 477         },
 478         {
 479                 /*
 480                  * SmartDisk (Mitsumi) USB floppy drive
 481                  * PR: kern/50226
 482                  */
 483                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "MITSUMI", "USB FDD", "*"},
 484                 /*quirks*/ DA_Q_NO_6_BYTE|DA_Q_NO_SYNC_CACHE
 485         },
 486         {
 487                 /*
 488                  * OTi USB Flash Key
 489                  * PR: kern/51825
 490                  */
 491                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "OTi", "Flash Disk", "*"},
 492                 /*quirks*/ DA_Q_NO_6_BYTE
 493         }
 494 };
 495
 496 static  d_open_t        daopen;
 497 static  d_close_t       daclose;
 498 static  d_strategy_t    dastrategy;
 499 static  d_ioctl_t       daioctl;
 500 static  d_dump_t        dadump;
 501 static  periph_init_t   dainit;
 502 static  void            daasync(void *callback_arg, u_int32_t code,
 503                                 struct cam_path *path, void *arg);
 504 static  periph_ctor_t   daregister;
 505 static  periph_dtor_t   dacleanup;
 506 static  periph_start_t  dastart;
 507 static  periph_oninv_t  daoninvalidate;
 508 static  void            dadone(struct cam_periph *periph,
 509                                union ccb *done_ccb);
 510 static  int             daerror(union ccb *ccb, u_int32_t cam_flags,
 511                                 u_int32_t sense_flags);
 512 static void             daprevent(struct cam_periph *periph, int action);
 513 static void             dasetgeom(struct cam_periph *periph,
 514                                   struct scsi_read_capacity_data * rdcap);
 515 static timeout_t        dasendorderedtag;
 516 static void             dashutdown(void *arg, int howto);
 517
 518 #ifndef DA_DEFAULT_TIMEOUT
 519 #define DA_DEFAULT_TIMEOUT 60   /* Timeout in seconds */
 520 #endif
 521
 522 #ifndef DA_DEFAULT_RETRY
 523 #define DA_DEFAULT_RETRY        4
 524 #endif
 525
 526 static int da_retry_count = DA_DEFAULT_RETRY;
 527 static int da_default_timeout = DA_DEFAULT_TIMEOUT;
 528 static int da_no_6_byte = 0;
 529
 530 SYSCTL_NODE(_kern, OID_AUTO, cam, CTLFLAG_RD, 0, "CAM Subsystem");
 531 SYSCTL_NODE(_kern_cam, OID_AUTO, da, CTLFLAG_RD, 0,
 532             "CAM Direct Access Disk driver");
 533 SYSCTL_INT(_kern_cam_da, OID_AUTO, retry_count, CTLFLAG_RW,
 534            &da_retry_count, 0, "Normal I/O retry count");
 535 SYSCTL_INT(_kern_cam_da, OID_AUTO, default_timeout, CTLFLAG_RW,
 536            &da_default_timeout, 0, "Normal I/O timeout (in seconds)");
 537 SYSCTL_INT(_kern_cam_da, OID_AUTO, no_6_byte, CTLFLAG_RW,
 538            &da_no_6_byte, 0, "No 6 bytes commands");
 539
 540 /*
 541  * DA_ORDEREDTAG_INTERVAL determines how often, relative
 542  * to the default timeout, we check to see whether an ordered
 543  * tagged transaction is appropriate to prevent simple tag
 544  * starvation.  Since we'd like to ensure that there is at least
 545  * 1/2 of the timeout length left for a starved transaction to
 546  * complete after we've sent an ordered tag, we must poll at least
 547  * four times in every timeout period.  This takes care of the worst
 548  * case where a starved transaction starts during an interval that
 549  * meets the requirement "don't send an ordered tag" test so it takes
 550  * us two intervals to determine that a tag must be sent.
 551  */
 552 #ifndef DA_ORDEREDTAG_INTERVAL
 553 #define DA_ORDEREDTAG_INTERVAL 4
 554 #endif
 555
 556 static struct periph_driver dadriver =
 557 {
 558         dainit, "da",
 559         TAILQ_HEAD_INITIALIZER(dadriver.units), /* generation */ 0
 560 };
 561
 562 DATA_SET(periphdriver_set, dadriver);
 563
 564 #define DA_CDEV_MAJOR 13
 565 #define DA_BDEV_MAJOR 4
 566
 567 /* For 2.2-stable support */
 568 #ifndef D_DISK
 569 #define D_DISK 0
 570 #endif
 571
 572 static struct cdevsw da_cdevsw = {
 573         /* open */      daopen,
 574         /* close */     daclose,
 575         /* read */      physread,
 576         /* write */     physwrite,
 577         /* ioctl */     daioctl,
 578         /* poll */      nopoll,
 579         /* mmap */      nommap,
 580         /* strategy */  dastrategy,
 581         /* name */      "da",
 582         /* maj */       DA_CDEV_MAJOR,
 583         /* dump */      dadump,
 584         /* psize */     nopsize,
 585         /* flags */     D_DISK,
 586         /* bmaj */      DA_BDEV_MAJOR
 587 };
 588
 589 static struct cdevsw dadisk_cdevsw;
 590
 591 static SLIST_HEAD(,da_softc) softc_list;
 592 static struct extend_array *daperiphs;
 593
 594 static int
 595 daopen(dev_t dev, int flags, int fmt, struct proc *p)
 596 {
 597         struct cam_periph *periph;
 598         struct da_softc *softc;
 599         struct disklabel *label;
 600         int unit;
 601         int part;
 602         int error;
 603         int s;
 604
 605         unit = dkunit(dev);
 606         part = dkpart(dev);
 607         periph = cam_extend_get(daperiphs, unit);
 608         if (periph == NULL)
 609                 return (ENXIO);
 610
 611         softc = (struct da_softc *)periph->softc;
 612
 613         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE,
 614             ("daopen: dev=%s (unit %d , partition %d)\n", devtoname(dev),
 615              unit, part));
 616
 617         if ((error = cam_periph_lock(periph, PRIBIO|PCATCH)) != 0) {
 618                 return (error); /* error code from tsleep */
 619         }
 620
 621         if (cam_periph_acquire(periph) != CAM_REQ_CMP)
 622                 return(ENXIO);
 623         softc->flags |= DA_FLAG_OPEN;
 624
 625         s = splsoftcam();
 626         if ((softc->flags & DA_FLAG_PACK_INVALID) != 0) {
 627                 /* Invalidate our pack information. */
 628                 disk_invalidate(&softc->disk);
 629                 softc->flags &= ~DA_FLAG_PACK_INVALID;
 630         }
 631         splx(s);
 632
 633         /* Do a read capacity */
 634         {
 635                 struct scsi_read_capacity_data *rcap;
 636                 union  ccb *ccb;
 637
 638                 rcap = (struct scsi_read_capacity_data *)malloc(sizeof(*rcap),
 639                                                                 M_TEMP,
 640                                                                 M_WAITOK);
 641
 642                 ccb = cam_periph_getccb(periph, /*priority*/1);
 643                 scsi_read_capacity(&ccb->csio,
 644                                    /*retries*/1,
 645                                    /*cbfncp*/dadone,
 646                                    MSG_SIMPLE_Q_TAG,
 647                                    rcap,
 648                                    SSD_FULL_SIZE,
 649                                    /*timeout*/60000);
 650                 ccb->ccb_h.ccb_bp = NULL;
 651
 652                 error = cam_periph_runccb(ccb, daerror, /*cam_flags*/0,
 653                                           /*sense_flags*/SF_RETRY_UA |
 654                                                          SF_RETRY_SELTO,
 655                                           &softc->device_stats);
 656
 657                 xpt_release_ccb(ccb);
 658
 659                 if (error == 0) {
 660                         dasetgeom(periph, rcap);
 661                 }
 662
 663                 free(rcap, M_TEMP);
 664         }
 665
 666         if (error == 0) {
 667                 struct ccb_getdev cgd;
 668
 669                 /* Build label for whole disk. */
 670                 label = &softc->disk.d_label;
 671                 bzero(label, sizeof(*label));
 672                 label->d_type = DTYPE_SCSI;
 673
 674                 /*
 675                  * Grab the inquiry data to get the vendor and product names.
 676                  * Put them in the typename and packname for the label.
 677                  */
 678                 xpt_setup_ccb(&cgd.ccb_h, periph->path, /*priority*/ 1);
 679                 cgd.ccb_h.func_code = XPT_GDEV_TYPE;
 680                 xpt_action((union ccb *)&cgd);
 681
 682                 strncpy(label->d_typename, cgd.inq_data.vendor,
 683                         min(SID_VENDOR_SIZE, sizeof(label->d_typename)));
 684                 strncpy(label->d_packname, cgd.inq_data.product,
 685                         min(SID_PRODUCT_SIZE, sizeof(label->d_packname)));
 686
 687                 label->d_secsize = softc->params.secsize;
 688                 label->d_nsectors = softc->params.secs_per_track;
 689                 label->d_ntracks = softc->params.heads;
 690                 label->d_ncylinders = softc->params.cylinders;
 691                 label->d_secpercyl = softc->params.heads
 692                                   * softc->params.secs_per_track;
 693                 label->d_secperunit = softc->params.sectors;
 694
 695                 if (((softc->flags & DA_FLAG_PACK_REMOVABLE) != 0)) {
 696                         daprevent(periph, PR_PREVENT);
 697                 }
 698
 699                 /*
 700                  * Check to see whether or not the blocksize is set yet.
 701                  * If it isn't, set it and then clear the blocksize
 702                  * unavailable flag for the device statistics.
 703                  */
 704                 if ((softc->device_stats.flags & DEVSTAT_BS_UNAVAILABLE) != 0){
 705                         softc->device_stats.block_size = softc->params.secsize;
 706                         softc->device_stats.flags &= ~DEVSTAT_BS_UNAVAILABLE;
 707                 }
 708         }
 709
 710         if (error != 0) {
 711                 if ((softc->flags & DA_FLAG_PACK_REMOVABLE) != 0) {
 712                         daprevent(periph, PR_ALLOW);
 713                 }
 714                 softc->flags &= ~DA_FLAG_OPEN;
 715                 cam_periph_release(periph);
 716         }
 717         cam_periph_unlock(periph);
 718         return (error);
 719 }
 720
 721 static int
 722 daclose(dev_t dev, int flag, int fmt, struct proc *p)
 723 {
 724         struct  cam_periph *periph;
 725         struct  da_softc *softc;
 726         int     unit;
 727         int     error;
 728
 729         unit = dkunit(dev);
 730         periph = cam_extend_get(daperiphs, unit);
 731         if (periph == NULL)
 732                 return (ENXIO);
 733
 734         softc = (struct da_softc *)periph->softc;
 735
 736         if ((error = cam_periph_lock(periph, PRIBIO)) != 0) {
 737                 return (error); /* error code from tsleep */
 738         }
 739
 740         if ((softc->quirks & DA_Q_NO_SYNC_CACHE) == 0) {
 741                 union   ccb *ccb;
 742
 743                 ccb = cam_periph_getccb(periph, /*priority*/1);
 744
 745                 scsi_synchronize_cache(&ccb->csio,
 746                                        /*retries*/1,
 747                                        /*cbfcnp*/dadone,
 748                                        MSG_SIMPLE_Q_TAG,
 749                                        /*begin_lba*/0,/* Cover the whole disk */
 750                                        /*lb_count*/0,
 751                                        SSD_FULL_SIZE,
 752                                        5 * 60 * 1000);
 753
 754                 cam_periph_runccb(ccb, /*error_routine*/NULL, /*cam_flags*/0,
 755                                   /*sense_flags*/SF_RETRY_UA,
 756                                   &softc->device_stats);
 757
 758                 if ((ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
 759                         if ((ccb->ccb_h.status & CAM_STATUS_MASK) ==
 760                              CAM_SCSI_STATUS_ERROR) {
 761                                 int asc, ascq;
 762                                 int sense_key, error_code;
 763
 764                                 scsi_extract_sense(&ccb->csio.sense_data,
 765                                                    &error_code,
 766                                                    &sense_key,
 767                                                    &asc, &ascq);
 768                                 if (sense_key != SSD_KEY_ILLEGAL_REQUEST)
 769                                         scsi_sense_print(&ccb->csio);
 770                         } else {
 771                                 xpt_print_path(periph->path);
 772                                 printf("Synchronize cache failed, status "
 773                                        "== 0x%x, scsi status == 0x%x\n",
 774                                        ccb->csio.ccb_h.status,
 775                                        ccb->csio.scsi_status);
 776                         }
 777                 }
 778
 779                 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
 780                         cam_release_devq(ccb->ccb_h.path,
 781                                          /*relsim_flags*/0,
 782                                          /*reduction*/0,
 783                                          /*timeout*/0,
 784                                          /*getcount_only*/0);
 785
 786                 xpt_release_ccb(ccb);
 787
 788         }
 789
 790         if ((softc->flags & DA_FLAG_PACK_REMOVABLE) != 0) {
 791                 daprevent(periph, PR_ALLOW);
 792                 /*
 793                  * If we've got removeable media, mark the blocksize as
 794                  * unavailable, since it could change when new media is
 795                  * inserted.
 796                  */
 797                 softc->device_stats.flags |= DEVSTAT_BS_UNAVAILABLE;
 798         }
 799
 800         softc->flags &= ~DA_FLAG_OPEN;
 801         cam_periph_unlock(periph);
 802         cam_periph_release(periph);
 803         return (0);
 804 }
 805
 806 /*
 807  * Actually translate the requested transfer into one the physical driver
 808  * can understand.  The transfer is described by a buf and will include
 809  * only one physical transfer.
 810  */
 811 static void
 812 dastrategy(struct buf *bp)
 813 {
 814         struct cam_periph *periph;
 815         struct da_softc *softc;
 816         u_int  unit;
 817         u_int  part;
 818         int    s;
 819
 820         unit = dkunit(bp->b_dev);
 821         part = dkpart(bp->b_dev);
 822         periph = cam_extend_get(daperiphs, unit);
 823         if (periph == NULL) {
 824                 bp->b_error = ENXIO;
 825                 goto bad;
 826         }
 827         softc = (struct da_softc *)periph->softc;
 828 #if 0
 829         /*
 830          * check it's not too big a transfer for our adapter
 831          */
 832         scsi_minphys(bp,&sd_switch);
 833 #endif
 834
 835         /*
 836          * Mask interrupts so that the pack cannot be invalidated until
 837          * after we are in the queue.  Otherwise, we might not properly
 838          * clean up one of the buffers.
 839          */
 840         s = splbio();
 841
 842         /*
 843          * If the device has been made invalid, error out
 844          */
 845         if ((softc->flags & DA_FLAG_PACK_INVALID)) {
 846                 splx(s);
 847                 bp->b_error = ENXIO;
 848                 goto bad;
 849         }
 850
 851         /*
 852          * Place it in the queue of disk activities for this disk
 853          */
 854         bufqdisksort(&softc->buf_queue, bp);
 855
 856         splx(s);
 857
 858         /*
 859          * Schedule ourselves for performing the work.
 860          */
 861         xpt_schedule(periph, /* XXX priority */1);
 862
 863         return;
 864 bad:
 865         bp->b_flags |= B_ERROR;
 866
 867         /*
 868          * Correctly set the buf to indicate a completed xfer
 869          */
 870         bp->b_resid = bp->b_bcount;
 871         biodone(bp);
 872         return;
 873 }
 874
 875 /* For 2.2-stable support */
 876 #ifndef ENOIOCTL
 877 #define ENOIOCTL -1
 878 #endif
 879
 880 static int
 881 daioctl(dev_t dev, u_long cmd, caddr_t addr, int flag, struct proc *p)
 882 {
 883         struct cam_periph *periph;
 884         struct da_softc *softc;
 885         int unit;
 886         int error;
 887
 888         unit = dkunit(dev);
 889         periph = cam_extend_get(daperiphs, unit);
 890         if (periph == NULL)
 891                 return (ENXIO);
 892
 893         softc = (struct da_softc *)periph->softc;
 894
 895         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("daioctl\n"));
 896
 897         if ((error = cam_periph_lock(periph, PRIBIO|PCATCH)) != 0) {
 898                 return (error); /* error code from tsleep */
 899         }
 900
 901         error = cam_periph_ioctl(periph, cmd, addr, daerror);
 902
 903         cam_periph_unlock(periph);
 904
 905         return (error);
 906 }
 907
 908 static int
 909 dadump(dev_t dev)
 910 {
 911         struct      cam_periph *periph;
 912         struct      da_softc *softc;
 913         u_int       unit;
 914         u_int       part;
 915         u_int       secsize;
 916         u_int       num;        /* number of sectors to write */
 917         u_int       blknum;
 918         long        blkcnt;
 919         vm_offset_t addr;
 920         struct      ccb_scsiio csio;
 921         int         dumppages = MAXDUMPPGS;
 922         int         error;
 923         int         i;
 924
 925         /* toss any characters present prior to dump */
 926         while (cncheckc() != -1)
 927                 ;
 928
 929         unit = dkunit(dev);
 930         part = dkpart(dev);
 931         periph = cam_extend_get(daperiphs, unit);
 932         if (periph == NULL) {
 933                 return (ENXIO);
 934         }
 935         softc = (struct da_softc *)periph->softc;
 936
 937         if ((softc->flags & DA_FLAG_PACK_INVALID) != 0)
 938                 return (ENXIO);
 939
 940         error = disk_dumpcheck(dev, &num, &blknum, &secsize);
 941         if (error)
 942                 return (error);
 943
 944         addr = 0;       /* starting address */
 945         blkcnt = howmany(PAGE_SIZE, secsize);
 946
 947         while (num > 0) {
 948                 caddr_t va = NULL;
 949
 950                 if ((num / blkcnt) < dumppages)
 951                         dumppages = num / blkcnt;
 952
 953                 for (i = 0; i < dumppages; ++i) {
 954                         vm_offset_t a = addr + (i * PAGE_SIZE);
 955                         if (is_physical_memory(a))
 956                                 va = pmap_kenter_temporary(trunc_page(a), i);
 957                         else
 958                                 va = pmap_kenter_temporary(trunc_page(0), i);
 959                 }
 960
 961                 xpt_setup_ccb(&csio.ccb_h, periph->path, /*priority*/1);
 962                 csio.ccb_h.ccb_state = DA_CCB_DUMP;
 963                 scsi_read_write(&csio,
 964                                 /*retries*/1,
 965                                 dadone,
 966                                 MSG_ORDERED_Q_TAG,
 967                                 /*read*/FALSE,
 968                                 /*byte2*/0,
 969                                 /*minimum_cmd_size*/ softc->minimum_cmd_size,
 970                                 blknum,
 971                                 blkcnt * dumppages,
 972                                 /*data_ptr*/(u_int8_t *) va,
 973                                 /*dxfer_len*/blkcnt * secsize * dumppages,
 974                                 /*sense_len*/SSD_FULL_SIZE,
 975                                 DA_DEFAULT_TIMEOUT * 1000);
 976                 xpt_polled_action((union ccb *)&csio);
 977
 978                 if ((csio.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
 979                         printf("Aborting dump due to I/O error.\n");
 980                         if ((csio.ccb_h.status & CAM_STATUS_MASK) ==
 981                              CAM_SCSI_STATUS_ERROR)
 982                                 scsi_sense_print(&csio);
 983                         else
 984                                 printf("status == 0x%x, scsi status == 0x%x\n",
 985                                        csio.ccb_h.status, csio.scsi_status);
 986                         return(EIO);
 987                 }
 988
 989                 if (dumpstatus(addr, (off_t)num * softc->params.secsize) < 0)
 990                         return (EINTR);
 991
 992                 /* update block count */
 993                 num -= blkcnt * dumppages;
 994                 blknum += blkcnt * dumppages;
 995                 addr += PAGE_SIZE * dumppages;
 996         }
 997
 998         /*
 999          * Sync the disk cache contents to the physical media.
1000          */
1001         if ((softc->quirks & DA_Q_NO_SYNC_CACHE) == 0) {
1002
1003                 xpt_setup_ccb(&csio.ccb_h, periph->path, /*priority*/1);
1004                 csio.ccb_h.ccb_state = DA_CCB_DUMP;
1005                 scsi_synchronize_cache(&csio,
1006                                        /*retries*/1,
1007                                        /*cbfcnp*/dadone,
1008                                        MSG_SIMPLE_Q_TAG,
1009                                        /*begin_lba*/0,/* Cover the whole disk */
1010                                        /*lb_count*/0,
1011                                        SSD_FULL_SIZE,
1012                                        5 * 60 * 1000);
1013                 xpt_polled_action((union ccb *)&csio);
1014
1015                 if ((csio.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1016                         if ((csio.ccb_h.status & CAM_STATUS_MASK) ==
1017                              CAM_SCSI_STATUS_ERROR) {
1018                                 int asc, ascq;
1019                                 int sense_key, error_code;
1020
1021                                 scsi_extract_sense(&csio.sense_data,
1022                                                    &error_code,
1023                                                    &sense_key,
1024                                                    &asc, &ascq);
1025                                 if (sense_key != SSD_KEY_ILLEGAL_REQUEST)
1026                                         scsi_sense_print(&csio);
1027                         } else {
1028                                 xpt_print_path(periph->path);
1029                                 printf("Synchronize cache failed, status "
1030                                        "== 0x%x, scsi status == 0x%x\n",
1031                                        csio.ccb_h.status, csio.scsi_status);
1032                         }
1033                 }
1034         }
1035         return (0);
1036 }
1037
1038 static void
1039 dainit(void)
1040 {
1041         cam_status status;
1042         struct cam_path *path;
1043
1044         /*
1045          * Create our extend array for storing the devices we attach to.
1046          */
1047         daperiphs = cam_extend_new();
1048         SLIST_INIT(&softc_list);
1049         if (daperiphs == NULL) {
1050                 printf("da: Failed to alloc extend array!\n");
1051                 return;
1052         }
1053
1054         /*
1055          * Install a global async callback.  This callback will
1056          * receive async callbacks like "new device found".
1057          */
1058         status = xpt_create_path(&path, /*periph*/NULL, CAM_XPT_PATH_ID,
1059                                  CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD);
1060
1061         if (status == CAM_REQ_CMP) {
1062                 struct ccb_setasync csa;
1063
1064                 xpt_setup_ccb(&csa.ccb_h, path, /*priority*/5);
1065                 csa.ccb_h.func_code = XPT_SASYNC_CB;
1066                 csa.event_enable = AC_FOUND_DEVICE;
1067                 csa.callback = daasync;
1068                 csa.callback_arg = NULL;
1069                 xpt_action((union ccb *)&csa);
1070                 status = csa.ccb_h.status;
1071                 xpt_free_path(path);
1072         }
1073
1074         if (status != CAM_REQ_CMP) {
1075                 printf("da: Failed to attach master async callback "
1076                        "due to status 0x%x!\n", status);
1077         } else {
1078
1079                 /*
1080                  * Schedule a periodic event to occasionally send an
1081                  * ordered tag to a device.
1082                  */
1083                 timeout(dasendorderedtag, NULL,
1084                         (DA_DEFAULT_TIMEOUT * hz) / DA_ORDEREDTAG_INTERVAL);
1085
1086                 /* Register our shutdown event handler */
1087                 if ((EVENTHANDLER_REGISTER(shutdown_post_sync, dashutdown,
1088                                            NULL, SHUTDOWN_PRI_DEFAULT)) == NULL)
1089                     printf("dainit: shutdown event registration failed!\n");
1090         }
1091 }
1092
1093 static void
1094 daoninvalidate(struct cam_periph *periph)
1095 {
1096         int s;
1097         struct da_softc *softc;
1098         struct buf *q_bp;
1099         struct ccb_setasync csa;
1100
1101         softc = (struct da_softc *)periph->softc;
1102
1103         /*
1104          * De-register any async callbacks.
1105          */
1106         xpt_setup_ccb(&csa.ccb_h, periph->path,
1107                       /* priority */ 5);
1108         csa.ccb_h.func_code = XPT_SASYNC_CB;
1109         csa.event_enable = 0;
1110         csa.callback = daasync;
1111         csa.callback_arg = periph;
1112         xpt_action((union ccb *)&csa);
1113
1114         softc->flags |= DA_FLAG_PACK_INVALID;
1115
1116         /*
1117          * Although the oninvalidate() routines are always called at
1118          * splsoftcam, we need to be at splbio() here to keep the buffer
1119          * queue from being modified while we traverse it.
1120          */
1121         s = splbio();
1122
1123         /*
1124          * Return all queued I/O with ENXIO.
1125          * XXX Handle any transactions queued to the card
1126          *     with XPT_ABORT_CCB.
1127          */
1128         while ((q_bp = bufq_first(&softc->buf_queue)) != NULL){
1129                 bufq_remove(&softc->buf_queue, q_bp);
1130                 q_bp->b_resid = q_bp->b_bcount;
1131                 q_bp->b_error = ENXIO;
1132                 q_bp->b_flags |= B_ERROR;
1133                 biodone(q_bp);
1134         }
1135         splx(s);
1136
1137         SLIST_REMOVE(&softc_list, softc, da_softc, links);
1138
1139         xpt_print_path(periph->path);
1140         printf("lost device\n");
1141 }
1142
1143 static void
1144 dacleanup(struct cam_periph *periph)
1145 {
1146         struct da_softc *softc;
1147
1148         softc = (struct da_softc *)periph->softc;
1149
1150         devstat_remove_entry(&softc->device_stats);
1151         cam_extend_release(daperiphs, periph->unit_number);
1152         xpt_print_path(periph->path);
1153         printf("removing device entry\n");
1154         if (softc->disk.d_dev) {
1155                 disk_destroy(softc->disk.d_dev);
1156         }
1157         free(softc, M_DEVBUF);
1158 }
1159
1160 static void
1161 daasync(void *callback_arg, u_int32_t code,
1162         struct cam_path *path, void *arg)
1163 {
1164         struct cam_periph *periph;
1165
1166         periph = (struct cam_periph *)callback_arg;
1167         switch (code) {
1168         case AC_FOUND_DEVICE:
1169         {
1170                 struct ccb_getdev *cgd;
1171                 cam_status status;
1172
1173                 cgd = (struct ccb_getdev *)arg;
1174
1175                 if (SID_TYPE(&cgd->inq_data) != T_DIRECT
1176                     && SID_TYPE(&cgd->inq_data) != T_RBC
1177                     && SID_TYPE(&cgd->inq_data) != T_OPTICAL)
1178                         break;
1179
1180                 /*
1181                  * Allocate a peripheral instance for
1182                  * this device and start the probe
1183                  * process.
1184                  */
1185                 status = cam_periph_alloc(daregister, daoninvalidate,
1186                                           dacleanup, dastart,
1187                                           "da", CAM_PERIPH_BIO,
1188                                           cgd->ccb_h.path, daasync,
1189                                           AC_FOUND_DEVICE, cgd);
1190
1191                 if (status != CAM_REQ_CMP
1192                  && status != CAM_REQ_INPROG)
1193                         printf("daasync: Unable to attach to new device "
1194                                 "due to status 0x%x\n", status);
1195                 break;
1196         }
1197         case AC_SENT_BDR:
1198         case AC_BUS_RESET:
1199         {
1200                 struct da_softc *softc;
1201                 struct ccb_hdr *ccbh;
1202                 int s;
1203
1204                 softc = (struct da_softc *)periph->softc;
1205                 s = splsoftcam();
1206                 /*
1207                  * Don't fail on the expected unit attention
1208                  * that will occur.
1209                  */
1210                 softc->flags |= DA_FLAG_RETRY_UA;
1211                 for (ccbh = LIST_FIRST(&softc->pending_ccbs);
1212                      ccbh != NULL; ccbh = LIST_NEXT(ccbh, periph_links.le))
1213                         ccbh->ccb_state |= DA_CCB_RETRY_UA;
1214                 splx(s);
1215                 /* FALLTHROUGH*/
1216         }
1217         default:
1218                 cam_periph_async(periph, code, path, arg);
1219                 break;
1220         }
1221 }
1222
1223 static cam_status
1224 daregister(struct cam_periph *periph, void *arg)
1225 {
1226         int s;
1227         struct da_softc *softc;
1228         struct ccb_setasync csa;
1229         struct ccb_getdev *cgd;
1230         caddr_t match;
1231
1232         cgd = (struct ccb_getdev *)arg;
1233         if (periph == NULL) {
1234                 printf("daregister: periph was NULL!!\n");
1235                 return(CAM_REQ_CMP_ERR);
1236         }
1237
1238         if (cgd == NULL) {
1239                 printf("daregister: no getdev CCB, can't register device\n");
1240                 return(CAM_REQ_CMP_ERR);
1241         }
1242
1243         softc = (struct da_softc *)malloc(sizeof(*softc),M_DEVBUF,M_NOWAIT);
1244
1245         if (softc == NULL) {
1246                 printf("daregister: Unable to probe new device. "
1247                        "Unable to allocate softc\n");
1248                 return(CAM_REQ_CMP_ERR);
1249         }
1250
1251         bzero(softc, sizeof(*softc));
1252         LIST_INIT(&softc->pending_ccbs);
1253         softc->state = DA_STATE_PROBE;
1254         bufq_init(&softc->buf_queue);
1255         if (SID_IS_REMOVABLE(&cgd->inq_data))
1256                 softc->flags |= DA_FLAG_PACK_REMOVABLE;
1257         if ((cgd->inq_data.flags & SID_CmdQue) != 0)
1258                 softc->flags |= DA_FLAG_TAGGED_QUEUING;
1259
1260         periph->softc = softc;
1261
1262         cam_extend_set(daperiphs, periph->unit_number, periph);
1263
1264         /*
1265          * See if this device has any quirks.
1266          */
1267         match = cam_quirkmatch((caddr_t)&cgd->inq_data,
1268                                (caddr_t)da_quirk_table,
1269                                sizeof(da_quirk_table)/sizeof(*da_quirk_table),
1270                                sizeof(*da_quirk_table), scsi_inquiry_match);
1271
1272         if (match != NULL)
1273                 softc->quirks = ((struct da_quirk_entry *)match)->quirks;
1274         else
1275                 softc->quirks = DA_Q_NONE;
1276
1277         if (softc->quirks & DA_Q_NO_6_BYTE || SID_TYPE(&cgd->inq_data) == T_RBC)
1278                 softc->minimum_cmd_size = 10;
1279         else
1280                 softc->minimum_cmd_size = 6;
1281
1282         /*
1283          * Block our timeout handler while we
1284          * add this softc to the dev list.
1285          */
1286         s = splsoftclock();
1287         SLIST_INSERT_HEAD(&softc_list, softc, links);
1288         splx(s);
1289
1290         /*
1291          * The DA driver supports a blocksize, but
1292          * we don't know the blocksize until we do
1293          * a read capacity.  So, set a flag to
1294          * indicate that the blocksize is
1295          * unavailable right now.  We'll clear the
1296          * flag as soon as we've done a read capacity.
1297          */
1298         devstat_add_entry(&softc->device_stats, "da",
1299                           periph->unit_number, 0,
1300                           DEVSTAT_BS_UNAVAILABLE,
1301                           SID_TYPE(&cgd->inq_data) | DEVSTAT_TYPE_IF_SCSI,
1302                           DEVSTAT_PRIORITY_DISK);
1303
1304         /*
1305          * Register this media as a disk
1306          */
1307         disk_create(periph->unit_number, &softc->disk, 0,
1308             &da_cdevsw, &dadisk_cdevsw);
1309
1310         /*
1311          * Add async callbacks for bus reset and
1312          * bus device reset calls.  I don't bother
1313          * checking if this fails as, in most cases,
1314          * the system will function just fine without
1315          * them and the only alternative would be to
1316          * not attach the device on failure.
1317          */
1318         xpt_setup_ccb(&csa.ccb_h, periph->path, /*priority*/5);
1319         csa.ccb_h.func_code = XPT_SASYNC_CB;
1320         csa.event_enable = AC_SENT_BDR | AC_BUS_RESET | AC_LOST_DEVICE;
1321         csa.callback = daasync;
1322         csa.callback_arg = periph;
1323         xpt_action((union ccb *)&csa);
1324         /*
1325          * Lock this peripheral until we are setup.
1326          * This first call can't block
1327          */
1328         (void)cam_periph_lock(periph, PRIBIO);
1329         xpt_schedule(periph, /*priority*/5);
1330
1331         return(CAM_REQ_CMP);
1332 }
1333
1334 static void
1335 dastart(struct cam_periph *periph, union ccb *start_ccb)
1336 {
1337         struct da_softc *softc;
1338
1339         softc = (struct da_softc *)periph->softc;
1340
1341
1342         switch (softc->state) {
1343         case DA_STATE_NORMAL:
1344         {
1345                 /* Pull a buffer from the queue and get going on it */
1346                 struct buf *bp;
1347                 int s;
1348
1349                 /*
1350                  * See if there is a buf with work for us to do..
1351                  */
1352                 s = splbio();
1353                 bp = bufq_first(&softc->buf_queue);
1354                 if (periph->immediate_priority <= periph->pinfo.priority) {
1355                         CAM_DEBUG_PRINT(CAM_DEBUG_SUBTRACE,
1356                                         ("queuing for immediate ccb\n"));
1357                         start_ccb->ccb_h.ccb_state = DA_CCB_WAITING;
1358                         SLIST_INSERT_HEAD(&periph->ccb_list, &start_ccb->ccb_h,
1359                                           periph_links.sle);
1360                         periph->immediate_priority = CAM_PRIORITY_NONE;
1361                         splx(s);
1362                         wakeup(&periph->ccb_list);
1363                 } else if (bp == NULL) {
1364                         splx(s);
1365                         xpt_release_ccb(start_ccb);
1366                 } else {
1367                         int oldspl;
1368                         u_int8_t tag_code;
1369
1370                         bufq_remove(&softc->buf_queue, bp);
1371
1372                         devstat_start_transaction(&softc->device_stats);
1373
1374                         if ((bp->b_flags & B_ORDERED) != 0
1375                          || (softc->flags & DA_FLAG_NEED_OTAG) != 0) {
1376                                 softc->flags &= ~DA_FLAG_NEED_OTAG;
1377                                 softc->ordered_tag_count++;
1378                                 tag_code = MSG_ORDERED_Q_TAG;
1379                         } else {
1380                                 tag_code = MSG_SIMPLE_Q_TAG;
1381                         }
1382                         if (da_no_6_byte && softc->minimum_cmd_size == 6)
1383                                 softc->minimum_cmd_size = 10;
1384                         scsi_read_write(&start_ccb->csio,
1385                                         /*retries*/da_retry_count,
1386                                         dadone,
1387                                         tag_code,
1388                                         bp->b_flags & B_READ,
1389                                         /*byte2*/0,
1390                                         softc->minimum_cmd_size,
1391                                         bp->b_pblkno,
1392                                         bp->b_bcount / softc->params.secsize,
1393                                         bp->b_data,
1394                                         bp->b_bcount,
1395                                         /*sense_len*/SSD_FULL_SIZE,
1396                                         da_default_timeout * 1000);
1397                         start_ccb->ccb_h.ccb_state = DA_CCB_BUFFER_IO;
1398
1399                         /*
1400                          * Block out any asyncronous callbacks
1401                          * while we touch the pending ccb list.
1402                          */
1403                         oldspl = splcam();
1404                         LIST_INSERT_HEAD(&softc->pending_ccbs,
1405                                          &start_ccb->ccb_h, periph_links.le);
1406                         splx(oldspl);
1407
1408                         /* We expect a unit attention from this device */
1409                         if ((softc->flags & DA_FLAG_RETRY_UA) != 0) {
1410                                 start_ccb->ccb_h.ccb_state |= DA_CCB_RETRY_UA;
1411                                 softc->flags &= ~DA_FLAG_RETRY_UA;
1412                         }
1413
1414                         start_ccb->ccb_h.ccb_bp = bp;
1415                         bp = bufq_first(&softc->buf_queue);
1416                         splx(s);
1417
1418                         xpt_action(start_ccb);
1419                 }
1420
1421                 if (bp != NULL) {
1422                         /* Have more work to do, so ensure we stay scheduled */
1423                         xpt_schedule(periph, /* XXX priority */1);
1424                 }
1425                 break;
1426         }
1427         case DA_STATE_PROBE:
1428         {
1429                 struct ccb_scsiio *csio;
1430                 struct scsi_read_capacity_data *rcap;
1431
1432                 rcap = (struct scsi_read_capacity_data *)malloc(sizeof(*rcap),
1433                                                                 M_TEMP,
1434                                                                 M_NOWAIT);
1435                 if (rcap == NULL) {
1436                         printf("dastart: Couldn't malloc read_capacity data\n");
1437                         /* da_free_periph??? */
1438                         break;
1439                 }
1440                 csio = &start_ccb->csio;
1441                 scsi_read_capacity(csio,
1442                                    /*retries*/4,
1443                                    dadone,
1444                                    MSG_SIMPLE_Q_TAG,
1445                                    rcap,
1446                                    SSD_FULL_SIZE,
1447                                    /*timeout*/5000);
1448                 start_ccb->ccb_h.ccb_bp = NULL;
1449                 start_ccb->ccb_h.ccb_state = DA_CCB_PROBE;
1450                 xpt_action(start_ccb);
1451                 break;
1452         }
1453         }
1454 }
1455
1456 static int
1457 cmd6workaround(union ccb *ccb)
1458 {
1459         struct scsi_rw_6 cmd6;
1460         struct scsi_rw_10 *cmd10;
1461         struct da_softc *softc;
1462         u_int8_t *cdb;
1463         int frozen;
1464
1465         cdb = ccb->csio.cdb_io.cdb_bytes;
1466
1467         /* Translation only possible if CDB is an array and cmd is R/W6 */
1468         if ((ccb->ccb_h.flags & CAM_CDB_POINTER) != 0 ||
1469             (*cdb != READ_6 && *cdb != WRITE_6))
1470                 return 0;
1471
1472         xpt_print_path(ccb->ccb_h.path);
1473         printf("READ(6)/WRITE(6) not supported, "
1474                "increasing minimum_cmd_size to 10.\n");
1475         softc = (struct da_softc *)xpt_path_periph(ccb->ccb_h.path)->softc;
1476         softc->minimum_cmd_size = 10;
1477
1478         bcopy(cdb, &cmd6, sizeof(struct scsi_rw_6));
1479         cmd10 = (struct scsi_rw_10 *)cdb;
1480         cmd10->opcode = (cmd6.opcode == READ_6) ? READ_10 : WRITE_10;
1481         cmd10->byte2 = 0;
1482         scsi_ulto4b(scsi_3btoul(cmd6.addr), cmd10->addr);
1483         cmd10->reserved = 0;
1484         scsi_ulto2b(cmd6.length, cmd10->length);
1485         cmd10->control = cmd6.control;
1486         ccb->csio.cdb_len = sizeof(*cmd10);
1487
1488         /* Requeue request, unfreezing queue if necessary */
1489         frozen = (ccb->ccb_h.status & CAM_DEV_QFRZN) != 0;
1490         ccb->ccb_h.status = CAM_REQUEUE_REQ;
1491         xpt_action(ccb);
1492         if (frozen) {
1493                 cam_release_devq(ccb->ccb_h.path,
1494                                  /*relsim_flags*/0,
1495                                  /*reduction*/0,
1496                                  /*timeout*/0,
1497                                  /*getcount_only*/0);
1498         }
1499         return (ERESTART);
1500 }
1501
1502 static void
1503 dadone(struct cam_periph *periph, union ccb *done_ccb)
1504 {
1505         struct da_softc *softc;
1506         struct ccb_scsiio *csio;
1507
1508         softc = (struct da_softc *)periph->softc;
1509         csio = &done_ccb->csio;
1510         switch (csio->ccb_h.ccb_state & DA_CCB_TYPE_MASK) {
1511         case DA_CCB_BUFFER_IO:
1512         {
1513                 struct buf *bp;
1514                 int    oldspl;
1515
1516                 bp = (struct buf *)done_ccb->ccb_h.ccb_bp;
1517                 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1518                         int error;
1519                         int s;
1520                         int sf;
1521
1522                         if ((csio->ccb_h.ccb_state & DA_CCB_RETRY_UA) != 0)
1523                                 sf = SF_RETRY_UA;
1524                         else
1525                                 sf = 0;
1526
1527                         /* Retry selection timeouts */
1528                         sf |= SF_RETRY_SELTO;
1529
1530                         if ((error = daerror(done_ccb, 0, sf)) == ERESTART) {
1531                                 /*
1532                                  * A retry was scheuled, so
1533                                  * just return.
1534                                  */
1535                                 return;
1536                         }
1537                         if (error != 0) {
1538                                 struct buf *q_bp;
1539
1540                                 s = splbio();
1541
1542                                 if (error == ENXIO) {
1543                                         /*
1544                                          * Catastrophic error.  Mark our pack as
1545                                          * invalid.
1546                                          */
1547                                         /* XXX See if this is really a media
1548                                          *     change first.
1549                                          */
1550                                         xpt_print_path(periph->path);
1551                                         printf("Invalidating pack\n");
1552                                         softc->flags |= DA_FLAG_PACK_INVALID;
1553                                 }
1554
1555                                 /*
1556                                  * return all queued I/O with EIO, so that
1557                                  * the client can retry these I/Os in the
1558                                  * proper order should it attempt to recover.
1559                                  */
1560                                 while ((q_bp = bufq_first(&softc->buf_queue))
1561                                         != NULL) {
1562                                         bufq_remove(&softc->buf_queue, q_bp);
1563                                         q_bp->b_resid = q_bp->b_bcount;
1564                                         q_bp->b_error = EIO;
1565                                         q_bp->b_flags |= B_ERROR;
1566                                         biodone(q_bp);
1567                                 }
1568                                 splx(s);
1569                                 bp->b_error = error;
1570                                 bp->b_resid = bp->b_bcount;
1571                                 bp->b_flags |= B_ERROR;
1572                         } else {
1573                                 bp->b_resid = csio->resid;
1574                                 bp->b_error = 0;
1575                                 if (bp->b_resid != 0) {
1576                                         /* Short transfer ??? */
1577 #if 0
1578                                         if (cmd6workaround(done_ccb)
1579                                                                 == ERESTART)
1580                                                 return;
1581 #endif
1582                                         bp->b_flags |= B_ERROR;
1583                                 }
1584                         }
1585                         if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
1586                                 cam_release_devq(done_ccb->ccb_h.path,
1587                                                  /*relsim_flags*/0,
1588                                                  /*reduction*/0,
1589                                                  /*timeout*/0,
1590                                                  /*getcount_only*/0);
1591                 } else {
1592                         bp->b_resid = csio->resid;
1593                         if (csio->resid > 0) {
1594                                 /* Short transfer ??? */
1595 #if 0 /* XXX most of the broken umass devices need this ad-hoc work around */
1596                                 if (cmd6workaround(done_ccb) == ERESTART)
1597                                         return;
1598 #endif
1599                                 bp->b_flags |= B_ERROR;
1600                         }
1601                 }
1602
1603                 /*
1604                  * Block out any asyncronous callbacks
1605                  * while we touch the pending ccb list.
1606                  */
1607                 oldspl = splcam();
1608                 LIST_REMOVE(&done_ccb->ccb_h, periph_links.le);
1609                 splx(oldspl);
1610
1611                 if (softc->device_stats.busy_count == 0)
1612                         softc->flags |= DA_FLAG_WENT_IDLE;
1613
1614                 devstat_end_transaction_buf(&softc->device_stats, bp);
1615                 biodone(bp);
1616                 break;
1617         }
1618         case DA_CCB_PROBE:
1619         {
1620                 struct     scsi_read_capacity_data *rdcap;
1621                 char       announce_buf[80];
1622
1623                 rdcap = (struct scsi_read_capacity_data *)csio->data_ptr;
1624
1625                 if ((csio->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP) {
1626                         struct disk_params *dp;
1627
1628                         dasetgeom(periph, rdcap);
1629                         dp = &softc->params;
1630                         snprintf(announce_buf, sizeof(announce_buf),
1631                                 "%luMB (%u %u byte sectors: %dH %dS/T %dC)",
1632                                 (unsigned long) (((u_int64_t)dp->secsize *
1633                                 dp->sectors) / (1024*1024)), dp->sectors,
1634                                 dp->secsize, dp->heads, dp->secs_per_track,
1635                                 dp->cylinders);
1636                 } else {
1637                         int     error;
1638
1639                         announce_buf[0] = '\0';
1640
1641                         /*
1642                          * Retry any UNIT ATTENTION type errors.  They
1643                          * are expected at boot.
1644                          */
1645                         error = daerror(done_ccb, 0, SF_RETRY_UA |
1646                                         SF_RETRY_SELTO | SF_NO_PRINT);
1647                         if (error == ERESTART) {
1648                                 /*
1649                                  * A retry was scheuled, so
1650                                  * just return.
1651                                  */
1652                                 return;
1653                         } else if (error != 0) {
1654                                 struct scsi_sense_data *sense;
1655                                 int asc, ascq;
1656                                 int sense_key, error_code;
1657                                 int have_sense;
1658                                 cam_status status;
1659                                 struct ccb_getdev cgd;
1660
1661                                 /* Don't wedge this device's queue */
1662                                 cam_release_devq(done_ccb->ccb_h.path,
1663                                                  /*relsim_flags*/0,
1664                                                  /*reduction*/0,
1665                                                  /*timeout*/0,
1666                                                  /*getcount_only*/0);
1667
1668                                 status = done_ccb->ccb_h.status;
1669
1670                                 xpt_setup_ccb(&cgd.ccb_h,
1671                                               done_ccb->ccb_h.path,
1672                                               /* priority */ 1);
1673                                 cgd.ccb_h.func_code = XPT_GDEV_TYPE;
1674                                 xpt_action((union ccb *)&cgd);
1675
1676                                 if (((csio->ccb_h.flags & CAM_SENSE_PHYS) != 0)
1677                                  || ((csio->ccb_h.flags & CAM_SENSE_PTR) != 0)
1678                                  || ((status & CAM_AUTOSNS_VALID) == 0))
1679                                         have_sense = FALSE;
1680                                 else
1681                                         have_sense = TRUE;
1682
1683                                 if (have_sense) {
1684                                         sense = &csio->sense_data;
1685                                         scsi_extract_sense(sense, &error_code,
1686                                                            &sense_key,
1687                                                            &asc, &ascq);
1688                                 }
1689                                 /*
1690                                  * Attach to anything that claims to be a
1691                                  * direct access or optical disk device,
1692                                  * as long as it doesn't return a "Logical
1693                                  * unit not supported" (0x25) error.
1694                                  */
1695                                 if ((have_sense) && (asc != 0x25)
1696                                  && (error_code == SSD_CURRENT_ERROR))
1697                                         snprintf(announce_buf,
1698                                             sizeof(announce_buf),
1699                                                 "Attempt to query device "
1700                                                 "size failed: %s, %s",
1701                                                 scsi_sense_key_text[sense_key],
1702                                                 scsi_sense_desc(asc,ascq,
1703                                                                 &cgd.inq_data));
1704                                 else {
1705                                         if (have_sense)
1706                                                 scsi_sense_print(
1707                                                         &done_ccb->csio);
1708                                         else {
1709                                                 xpt_print_path(periph->path);
1710                                                 printf("got CAM status %#x\n",
1711                                                        done_ccb->ccb_h.status);
1712                                         }
1713
1714                                         xpt_print_path(periph->path);
1715                                         printf("fatal error, failed"
1716                                                " to attach to device\n");
1717
1718                                         /*
1719                                          * Free up resources.
1720                                          */
1721                                         cam_periph_invalidate(periph);
1722                                 }
1723                         }
1724                 }
1725                 free(rdcap, M_TEMP);
1726                 if (announce_buf[0] != '\0')
1727                         xpt_announce_periph(periph, announce_buf);
1728                 softc->state = DA_STATE_NORMAL;
1729                 /*
1730                  * Since our peripheral may be invalidated by an error
1731                  * above or an external event, we must release our CCB
1732                  * before releasing the probe lock on the peripheral.
1733                  * The peripheral will only go away once the last lock
1734                  * is removed, and we need it around for the CCB release
1735                  * operation.
1736                  */
1737                 xpt_release_ccb(done_ccb);
1738                 cam_periph_unlock(periph);
1739                 return;
1740         }
1741         case DA_CCB_WAITING:
1742         {
1743                 /* Caller will release the CCB */
1744                 wakeup(&done_ccb->ccb_h.cbfcnp);
1745                 return;
1746         }
1747         case DA_CCB_DUMP:
1748                 /* No-op.  We're polling */
1749                 return;
1750         default:
1751                 break;
1752         }
1753         xpt_release_ccb(done_ccb);
1754 }
1755
1756 static int
1757 daerror(union ccb *ccb, u_int32_t cam_flags, u_int32_t sense_flags)
1758 {
1759         struct da_softc   *softc;
1760         struct cam_periph *periph;
1761         int error, sense_key, error_code, asc, ascq;
1762
1763         periph = xpt_path_periph(ccb->ccb_h.path);
1764         softc = (struct da_softc *)periph->softc;
1765
1766         /*
1767          * Automatically detect devices that do not support
1768          * READ(6)/WRITE(6) and upgrade to using 10 byte cdbs.
1769          */
1770         error = 0;
1771         if ((ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_SCSI_STATUS_ERROR
1772           && ccb->csio.scsi_status == SCSI_STATUS_CHECK_COND) {
1773                 scsi_extract_sense(&ccb->csio.sense_data,
1774                                    &error_code, &sense_key, &asc, &ascq);
1775                 if (sense_key == SSD_KEY_ILLEGAL_REQUEST)
1776                         error = cmd6workaround(ccb);
1777         }
1778         if (error == ERESTART)
1779                 return (ERESTART);
1780
1781         /*
1782          * XXX
1783          * Until we have a better way of doing pack validation,
1784          * don't treat UAs as errors.
1785          */
1786         sense_flags |= SF_RETRY_UA;
1787         return(cam_periph_error(ccb, cam_flags, sense_flags,
1788                                 &softc->saved_ccb));
1789 }
1790
1791 static void
1792 daprevent(struct cam_periph *periph, int action)
1793 {
1794         struct  da_softc *softc;
1795         union   ccb *ccb;
1796         int     error;
1797
1798         softc = (struct da_softc *)periph->softc;
1799
1800         if (((action == PR_ALLOW)
1801           && (softc->flags & DA_FLAG_PACK_LOCKED) == 0)
1802          || ((action == PR_PREVENT)
1803           && (softc->flags & DA_FLAG_PACK_LOCKED) != 0)) {
1804                 return;
1805         }
1806
1807         ccb = cam_periph_getccb(periph, /*priority*/1);
1808
1809         scsi_prevent(&ccb->csio,
1810                      /*retries*/1,
1811                      /*cbcfp*/dadone,
1812                      MSG_SIMPLE_Q_TAG,
1813                      action,
1814                      SSD_FULL_SIZE,
1815                      5000);
1816
1817         error = cam_periph_runccb(ccb, /*error_routine*/NULL, /*cam_flags*/0,
1818                                   /*sense_flags*/0, &softc->device_stats);
1819
1820         if (error == 0) {
1821                 if (action == PR_ALLOW)
1822                         softc->flags &= ~DA_FLAG_PACK_LOCKED;
1823                 else
1824                         softc->flags |= DA_FLAG_PACK_LOCKED;
1825         }
1826
1827         xpt_release_ccb(ccb);
1828 }
1829
1830 static void
1831 dasetgeom(struct cam_periph *periph, struct scsi_read_capacity_data * rdcap)
1832 {
1833         struct ccb_calc_geometry ccg;
1834         struct da_softc *softc;
1835         struct disk_params *dp;
1836
1837         softc = (struct da_softc *)periph->softc;
1838
1839         dp = &softc->params;
1840         dp->secsize = scsi_4btoul(rdcap->length);
1841         dp->sectors = scsi_4btoul(rdcap->addr) + 1;
1842         /*
1843          * Have the controller provide us with a geometry
1844          * for this disk.  The only time the geometry
1845          * matters is when we boot and the controller
1846          * is the only one knowledgeable enough to come
1847          * up with something that will make this a bootable
1848          * device.
1849          */
1850         xpt_setup_ccb(&ccg.ccb_h, periph->path, /*priority*/1);
1851         ccg.ccb_h.func_code = XPT_CALC_GEOMETRY;
1852         ccg.block_size = dp->secsize;
1853         ccg.volume_size = dp->sectors;
1854         ccg.heads = 0;
1855         ccg.secs_per_track = 0;
1856         ccg.cylinders = 0;
1857         xpt_action((union ccb*)&ccg);
1858         dp->heads = ccg.heads;
1859         dp->secs_per_track = ccg.secs_per_track;
1860         dp->cylinders = ccg.cylinders;
1861 }
1862
1863 static void
1864 dasendorderedtag(void *arg)
1865 {
1866         struct da_softc *softc;
1867         int s;
1868
1869         for (softc = SLIST_FIRST(&softc_list);
1870              softc != NULL;
1871              softc = SLIST_NEXT(softc, links)) {
1872                 s = splsoftcam();
1873                 if ((softc->ordered_tag_count == 0)
1874                  && ((softc->flags & DA_FLAG_WENT_IDLE) == 0)) {
1875                         softc->flags |= DA_FLAG_NEED_OTAG;
1876                 }
1877                 if (softc->device_stats.busy_count > 0)
1878                         softc->flags &= ~DA_FLAG_WENT_IDLE;
1879
1880                 softc->ordered_tag_count = 0;
1881                 splx(s);
1882         }
1883         /* Queue us up again */
1884         timeout(dasendorderedtag, NULL,
1885                 (da_default_timeout * hz) / DA_ORDEREDTAG_INTERVAL);
1886 }
1887
1888 /*
1889  * Step through all DA peripheral drivers, and if the device is still open,
1890  * sync the disk cache to physical media.
1891  */
1892 static void
1893 dashutdown(void * arg, int howto)
1894 {
1895         struct cam_periph *periph;
1896         struct da_softc *softc;
1897
1898         for (periph = TAILQ_FIRST(&dadriver.units); periph != NULL;
1899              periph = TAILQ_NEXT(periph, unit_links)) {
1900                 union ccb ccb;
1901                 softc = (struct da_softc *)periph->softc;
1902
1903                 /*
1904                  * We only sync the cache if the drive is still open, and
1905                  * if the drive is capable of it..
1906                  */
1907                 if (((softc->flags & DA_FLAG_OPEN) == 0)
1908                  || (softc->quirks & DA_Q_NO_SYNC_CACHE))
1909                         continue;
1910
1911                 xpt_setup_ccb(&ccb.ccb_h, periph->path, /*priority*/1);
1912
1913                 ccb.ccb_h.ccb_state = DA_CCB_DUMP;
1914                 scsi_synchronize_cache(&ccb.csio,
1915                                        /*retries*/1,
1916                                        /*cbfcnp*/dadone,
1917                                        MSG_SIMPLE_Q_TAG,
1918                                        /*begin_lba*/0, /* whole disk */
1919                                        /*lb_count*/0,
1920                                        SSD_FULL_SIZE,
1921                                        5 * 60 * 1000);
1922
1923                 xpt_polled_action(&ccb);
1924
1925                 if ((ccb.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1926                         if (((ccb.ccb_h.status & CAM_STATUS_MASK) ==
1927                              CAM_SCSI_STATUS_ERROR)
1928                          && (ccb.csio.scsi_status == SCSI_STATUS_CHECK_COND)){
1929                                 int error_code, sense_key, asc, ascq;
1930
1931                                 scsi_extract_sense(&ccb.csio.sense_data,
1932                                                    &error_code, &sense_key,
1933                                                    &asc, &ascq);
1934
1935                                 if (sense_key != SSD_KEY_ILLEGAL_REQUEST)
1936                                         scsi_sense_print(&ccb.csio);
1937                         } else {
1938                                 xpt_print_path(periph->path);
1939                                 printf("Synchronize cache failed, status "
1940                                        "== 0x%x, scsi status == 0x%x\n",
1941                                        ccb.ccb_h.status, ccb.csio.scsi_status);
1942                         }
1943                 }
1944
1945                 if ((ccb.ccb_h.status & CAM_DEV_QFRZN) != 0)
1946                         cam_release_devq(ccb.ccb_h.path,
1947                                          /*relsim_flags*/0,
1948                                          /*reduction*/0,
1949                                          /*timeout*/0,
1950                                          /*getcount_only*/0);
1951
1952         }
1953 }
1954
1955 #else /* !_KERNEL */
1956
1957 /*
1958  * XXX This is only left out of the kernel build to silence warnings.  If,
1959  * for some reason this function is used in the kernel, the ifdefs should
1960  * be moved so it is included both in the kernel and userland.
1961  */
1962 void
1963 scsi_format_unit(struct ccb_scsiio *csio, u_int32_t retries,
1964                  void (*cbfcnp)(struct cam_periph *, union ccb *),
1965                  u_int8_t tag_action, u_int8_t byte2, u_int16_t ileave,
1966                  u_int8_t *data_ptr, u_int32_t dxfer_len, u_int8_t sense_len,
1967                  u_int32_t timeout)
1968 {
1969         struct scsi_format_unit *scsi_cmd;
1970
1971         scsi_cmd = (struct scsi_format_unit *)&csio->cdb_io.cdb_bytes;
1972         scsi_cmd->opcode = FORMAT_UNIT;
1973         scsi_cmd->byte2 = byte2;
1974         scsi_ulto2b(ileave, scsi_cmd->interleave);
1975
1976         cam_fill_csio(csio,
1977                       retries,
1978                       cbfcnp,
1979                       /*flags*/ (dxfer_len > 0) ? CAM_DIR_OUT : CAM_DIR_NONE,
1980                       tag_action,
1981                       data_ptr,
1982                       dxfer_len,
1983                       sense_len,
1984                       sizeof(*scsi_cmd),
1985                       timeout);
1986 }
1987
1988 #endif /* _KERNEL */