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  * $DragonFly: src/sys/bus/cam/scsi/scsi_da.c,v 1.10 2003/11/21 22:46:13 dillon Exp $
  30  */
  31
  32 #ifdef _KERNEL
  33 #include "opt_hw_wdog.h"
  34 #endif /* _KERNEL */
  35
  36 #include <sys/param.h>
  37 #include <sys/bootmaj.h>
  38
  39 #ifdef _KERNEL
  40 #include <sys/systm.h>
  41 #include <sys/kernel.h>
  42 #include <sys/buf.h>
  43 #include <sys/sysctl.h>
  44 #endif /* _KERNEL */
  45
  46 #include <sys/devicestat.h>
  47 #include <sys/conf.h>
  48 #include <sys/disk.h>
  49 #include <sys/eventhandler.h>
  50 #ifdef _KERNEL
  51 #include <sys/malloc.h>
  52 #include <sys/cons.h>
  53 #include <sys/proc.h>
  54 #endif
  55 #include <sys/buf2.h>
  56
  57 #include <machine/md_var.h>
  58
  59 #ifdef _KERNEL
  60 #include <vm/vm.h>
  61 #include <vm/pmap.h>
  62 #endif
  63
  64 #ifndef _KERNEL
  65 #include <stdio.h>
  66 #include <string.h>
  67 #endif /* _KERNEL */
  68
  69 #include "../cam.h"
  70 #include "../cam_ccb.h"
  71 #include "../cam_extend.h"
  72 #include "../cam_periph.h"
  73 #include "../cam_xpt_periph.h"
  74
  75 #include "scsi_message.h"
  76
  77 #ifndef _KERNEL
  78 #include "scsi_da.h"
  79 #endif /* !_KERNEL */
  80
  81 #ifdef _KERNEL
  82 typedef enum {
  83         DA_STATE_PROBE,
  84         DA_STATE_NORMAL
  85 } da_state;
  86
  87 typedef enum {
  88         DA_FLAG_PACK_INVALID    = 0x001,
  89         DA_FLAG_NEW_PACK        = 0x002,
  90         DA_FLAG_PACK_LOCKED     = 0x004,
  91         DA_FLAG_PACK_REMOVABLE  = 0x008,
  92         DA_FLAG_TAGGED_QUEUING  = 0x010,
  93         DA_FLAG_NEED_OTAG       = 0x020,
  94         DA_FLAG_WENT_IDLE       = 0x040,
  95         DA_FLAG_RETRY_UA        = 0x080,
  96         DA_FLAG_OPEN            = 0x100
  97 } da_flags;
  98
  99 typedef enum {
 100         DA_Q_NONE               = 0x00,
 101         DA_Q_NO_SYNC_CACHE      = 0x01,
 102         DA_Q_NO_6_BYTE          = 0x02
 103 } da_quirks;
 104
 105 typedef enum {
 106         DA_CCB_PROBE            = 0x01,
 107         DA_CCB_BUFFER_IO        = 0x02,
 108         DA_CCB_WAITING          = 0x03,
 109         DA_CCB_DUMP             = 0x04,
 110         DA_CCB_TYPE_MASK        = 0x0F,
 111         DA_CCB_RETRY_UA         = 0x10
 112 } da_ccb_state;
 113
 114 /* Offsets into our private area for storing information */
 115 #define ccb_state       ppriv_field0
 116 #define ccb_bp          ppriv_ptr1
 117
 118 struct disk_params {
 119         u_int8_t  heads;
 120         u_int16_t cylinders;
 121         u_int8_t  secs_per_track;
 122         u_int32_t secsize;      /* Number of bytes/sector */
 123         u_int32_t sectors;      /* total number sectors */
 124 };
 125
 126 struct da_softc {
 127         struct   buf_queue_head buf_queue;
 128         struct   devstat device_stats;
 129         SLIST_ENTRY(da_softc) links;
 130         LIST_HEAD(, ccb_hdr) pending_ccbs;
 131         da_state state;
 132         da_flags flags;
 133         da_quirks quirks;
 134         int      minimum_cmd_size;
 135         int      ordered_tag_count;
 136         struct   disk_params params;
 137         struct   disk disk;
 138         union    ccb saved_ccb;
 139 };
 140
 141 struct da_quirk_entry {
 142         struct scsi_inquiry_pattern inq_pat;
 143         da_quirks quirks;
 144 };
 145
 146 static const char quantum[] = "QUANTUM";
 147 static const char microp[] = "MICROP";
 148
 149 static struct da_quirk_entry da_quirk_table[] =
 150 {
 151         {
 152                 /*
 153                  * Fujitsu M2513A MO drives.
 154                  * Tested devices: M2513A2 firmware versions 1200 & 1300.
 155                  * (dip switch selects whether T_DIRECT or T_OPTICAL device)
 156                  * Reported by: W.Scholten <whs@xs4all.nl>
 157                  */
 158                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "FUJITSU", "M2513A", "*"},
 159                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 160         },
 161         {
 162                 /* See above. */
 163                 {T_OPTICAL, SIP_MEDIA_REMOVABLE, "FUJITSU", "M2513A", "*"},
 164                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 165         },
 166         {
 167                 /*
 168                  * This particular Fujitsu drive doesn't like the
 169                  * synchronize cache command.
 170                  * Reported by: Tom Jackson <toj@gorilla.net>
 171                  */
 172                 {T_DIRECT, SIP_MEDIA_FIXED, "FUJITSU", "M2954*", "*"},
 173                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 174
 175         },
 176         {
 177                 /*
 178                  * This drive doesn't like the synchronize cache command
 179                  * either.  Reported by: Matthew Jacob <mjacob@feral.com>
 180                  * in NetBSD PR kern/6027, August 24, 1998.
 181                  */
 182                 {T_DIRECT, SIP_MEDIA_FIXED, microp, "2217*", "*"},
 183                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 184         },
 185         {
 186                 /*
 187                  * This drive doesn't like the synchronize cache command
 188                  * either.  Reported by: Hellmuth Michaelis (hm@kts.org)
 189                  * (PR 8882).
 190                  */
 191                 {T_DIRECT, SIP_MEDIA_FIXED, microp, "2112*", "*"},
 192                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 193         },
 194         {
 195                 /*
 196                  * Doesn't like the synchronize cache command.
 197                  * Reported by: Blaz Zupan <blaz@gold.amis.net>
 198                  */
 199                 {T_DIRECT, SIP_MEDIA_FIXED, "NEC", "D3847*", "*"},
 200                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 201         },
 202         {
 203                 /*
 204                  * Doesn't like the synchronize cache command.
 205                  */
 206                 {T_DIRECT, SIP_MEDIA_FIXED, quantum, "MAVERICK 540S", "*"},
 207                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 208         },
 209         {
 210                 /*
 211                  * Doesn't like the synchronize cache command.
 212                  */
 213                 {T_DIRECT, SIP_MEDIA_FIXED, quantum, "LPS525S", "*"},
 214                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 215         },
 216         {
 217                 /*
 218                  * Doesn't work correctly with 6 byte reads/writes.
 219                  * Returns illegal request, and points to byte 9 of the
 220                  * 6-byte CDB.
 221                  * Reported by:  Adam McDougall <bsdx@spawnet.com>
 222                  */
 223                 {T_DIRECT, SIP_MEDIA_FIXED, quantum, "VIKING 4*", "*"},
 224                 /*quirks*/ DA_Q_NO_6_BYTE
 225         },
 226         {
 227                 /*
 228                  * See above.
 229                  */
 230                 {T_DIRECT, SIP_MEDIA_FIXED, quantum, "VIKING 2*", "*"},
 231                 /*quirks*/ DA_Q_NO_6_BYTE
 232         },
 233
 234         /* Below a list of quirks for USB devices supported by umass. */
 235         {
 236                 /*
 237                  * This USB floppy drive uses the UFI command set. This
 238                  * command set is a derivative of the ATAPI command set and
 239                  * does not support READ_6 commands only READ_10. It also does
 240                  * not support sync cache (0x35).
 241                  */
 242                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Y-E DATA", "USB-FDU", "*"},
 243                 /*quirks*/ DA_Q_NO_6_BYTE|DA_Q_NO_SYNC_CACHE
 244         },
 245         {
 246                 /* Another USB floppy */
 247                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "MATSHITA", "FDD CF-VFDU*","*"},
 248                 /*quirks*/ DA_Q_NO_6_BYTE|DA_Q_NO_SYNC_CACHE
 249         },
 250         {
 251                 /*
 252                  * Sony Memory Stick adapter MSAC-US1 and
 253                  * Sony PCG-C1VJ Internal Memory Stick Slot (MSC-U01).
 254                  * Make all sony MS* products use this quirk.
 255                  */
 256                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Sony", "MS*", "*"},
 257                 /*quirks*/ DA_Q_NO_6_BYTE|DA_Q_NO_SYNC_CACHE
 258         },
 259         {
 260                 /*
 261                  * Sony Memory Stick adapter for the CLIE series
 262                  * of PalmOS PDA's
 263                  */
 264                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Sony", "CLIE*", "*"},
 265                 /*quirks*/ DA_Q_NO_6_BYTE|DA_Q_NO_SYNC_CACHE
 266         },
 267         {
 268                 /*
 269                  * Sony DSC cameras (DSC-S30, DSC-S50, DSC-S70)
 270                  */
 271                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Sony", "Sony DSC", "*"},
 272                 /*quirks*/ DA_Q_NO_6_BYTE|DA_Q_NO_SYNC_CACHE
 273         },
 274         {
 275                 /*
 276                  * Maxtor 3000LE USB Drive
 277                  */
 278                 {T_DIRECT, SIP_MEDIA_FIXED, "MAXTOR*", "K040H2*", "*"},
 279                 /*quirks*/ DA_Q_NO_6_BYTE
 280         },
 281         {
 282                 /*
 283                  * LaCie USB drive, among others
 284                  */
 285                 {T_DIRECT, SIP_MEDIA_FIXED, "Maxtor*", "D080H4*", "*"},
 286                 /*quirks*/ DA_Q_NO_6_BYTE
 287         },
 288         {
 289                 {T_OPTICAL, SIP_MEDIA_REMOVABLE, "FUJITSU", "MCF3064AP", "*"},
 290                 /*quirks*/ DA_Q_NO_6_BYTE
 291         },
 292         {
 293                 /*
 294                  * Microtech USB CameraMate
 295                  */
 296                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "eUSB    Compact*",
 297                  "Compact Flash*", "*"},
 298                 /*quirks*/ DA_Q_NO_6_BYTE|DA_Q_NO_SYNC_CACHE
 299         },
 300         {
 301                 /*
 302                  * The vendor, product and version strings coming from the
 303                  * controller are null terminated instead of being padded with
 304                  * spaces. The trailing wildcard character '*' is required.
 305                  */
 306                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "SMSC*", "USB FDC*","*"},
 307                 /*quirks*/ DA_Q_NO_6_BYTE|DA_Q_NO_SYNC_CACHE
 308         },
 309         {
 310                 /*
 311                  * Olympus digital cameras (C-3040ZOOM, C-2040ZOOM, C-1)
 312                  */
 313                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "OLYMPUS", "C-*", "*"},
 314                 /*quirks*/ DA_Q_NO_6_BYTE|DA_Q_NO_SYNC_CACHE
 315         },
 316         {
 317                 /*
 318                  * Olympus digital cameras (D-370)
 319                  */
 320                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "OLYMPUS", "D-*", "*"},
 321                 /*quirks*/ DA_Q_NO_6_BYTE
 322         },
 323         {
 324                 /*
 325                  * Olympus digital cameras (E-100RS, E-10).
 326                  */
 327                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "OLYMPUS", "E-*", "*"},
 328                 /*quirks*/ DA_Q_NO_6_BYTE|DA_Q_NO_SYNC_CACHE
 329         },
 330         {
 331                 /*
 332                  * KingByte Pen Drives
 333                  */
 334                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "NO BRAND", "PEN DRIVE", "*"},
 335                 /*quirks*/ DA_Q_NO_6_BYTE|DA_Q_NO_SYNC_CACHE
 336         },
 337         {
 338                 /*
 339                  * FujiFilm Camera
 340                  */
 341                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "FUJIFILMUSB-DRIVEUNIT",
 342                  "USB-DRIVEUNIT", "*"},
 343                 /*quirks*/ DA_Q_NO_6_BYTE|DA_Q_NO_SYNC_CACHE
 344         },
 345         {
 346                 /*
 347                  * Nikon Coolpix E775/E995 Cameras
 348                  */
 349                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "NIKON", "NIKON DSC E*", "*"},
 350                 /*quirks*/ DA_Q_NO_6_BYTE
 351         },
 352         {
 353                 /*
 354                  * Nikon Coolpix E885 Camera
 355                  */
 356                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Nikon", "Digital Camera", "*"},
 357                 /*quirks*/ DA_Q_NO_6_BYTE
 358         },
 359         {
 360                 /*
 361                  * SimpleTech FlashLink UCF-100
 362                  */
 363                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "OEI-USB", "CompactFlash", "*"},
 364                 /*quirks*/ DA_Q_NO_6_BYTE
 365         },
 366         {
 367                 /*
 368                  * Minolta Dimage 2330
 369                  */
 370                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "MINOLTA", "DIMAGE 2330*", "*"},
 371                 /*quirks*/ DA_Q_NO_6_BYTE
 372         },
 373         {
 374                 /*
 375                  * Minolta Dimage E203
 376                  */
 377                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "MINOLTA", "DiMAGE E203", "*"},
 378                 /*quirks*/ DA_Q_NO_6_BYTE|DA_Q_NO_SYNC_CACHE
 379         },
 380         {
 381                 /*
 382                  * DIVA USB Mp3 Player.
 383                  * PR: kern/33638
 384                  */
 385                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "DIVA USB", "Media Reader","*"},
 386                 /*quirks*/ DA_Q_NO_6_BYTE
 387         },
 388         {
 389                 /*
 390                  * Daisy Technology PhotoClip USB Camera
 391                  */
 392                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Digital", "World   DMC","*"},
 393                 /*quirks*/ DA_Q_NO_6_BYTE
 394         },
 395         {
 396                 /*
 397                  * Apacer HandyDrive
 398                  * PR: kern/43627
 399                  */
 400                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Apacer", "HandyDrive", "*"},
 401                 /*quirks*/ DA_Q_NO_6_BYTE|DA_Q_NO_SYNC_CACHE
 402         },
 403         {
 404                 /*
 405                  * Daisy Technology PhotoClip on Zoran chip
 406                  * PR: kern/43580
 407                  */
 408                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "ZORAN", "COACH", "*"},
 409                 /*quirks*/ DA_Q_NO_6_BYTE|DA_Q_NO_SYNC_CACHE
 410         },
 411         {
 412                 /*
 413                  * HP 315 Digital Camera
 414                  * PR: kern/41010
 415                  */
 416                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "HP", "USB CAMERA", "*"},
 417                 /*quirks*/ DA_Q_NO_6_BYTE
 418         },
 419         {
 420                 /*
 421                  * Fujitsu-Siemens Memorybird pen drive
 422                  * PR: kern/34712
 423                  */
 424                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Fujitsu", "Memorybird", "*"},
 425                 /*quirks*/ DA_Q_NO_6_BYTE
 426         },
 427         {
 428                 /*
 429                  * Sony USB Key-Storage
 430                  * PR: kern/46386
 431                  */
 432                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Sony", "Storage Media", "*"},
 433                 /*quirks*/ DA_Q_NO_6_BYTE|DA_Q_NO_SYNC_CACHE
 434         },
 435         {
 436                 /*
 437                  * Lexar Media Jumpdrive
 438                  * PR: kern/47006
 439                  */
 440                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "LEXAR", "DIGITAL FILM", "*"},
 441                 /*quirks*/ DA_Q_NO_6_BYTE
 442         },
 443         {
 444                 /*
 445                  * Pentax USB Optio 230 camera
 446                  * PR: kern/46369
 447                  */
 448                 {T_DIRECT, SIP_MEDIA_REMOVABLE,
 449                  "PENTAX", "DIGITAL_CAMERA", "*"},
 450                 /*quirks*/ DA_Q_NO_6_BYTE
 451         },
 452         {
 453                 /*
 454                  * Casio QV-R3 USB camera (uses Pentax chip as above)
 455                  * PR: kern/46545
 456                  */
 457                 {T_DIRECT, SIP_MEDIA_REMOVABLE,
 458                  "CASIO", "DIGITAL_CAMERA", "*"},
 459                 /*quirks*/ DA_Q_NO_6_BYTE
 460         },
 461         {
 462                 /*
 463                  * M-Systems DiskOnKey USB flash key
 464                  * PR: kern/47793
 465                  */
 466                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "M-Sys", "DiskOnKey", "*"},
 467                 /*quirks*/ DA_Q_NO_6_BYTE|DA_Q_NO_SYNC_CACHE
 468         },
 469         {
 470                 /*
 471                  * SanDisk ImageMate (I, II, ...) compact flash
 472                  * PR: kern/47877
 473                  */
 474                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "SanDisk", "ImageMate*", "*"},
 475                 /*quirks*/ DA_Q_NO_6_BYTE
 476         },
 477         {
 478                 /*
 479                  * Feiya "slider" dual-slot flash reader. The vendor field
 480                  * is blank so this may match other devices.
 481                  * PR: kern/50020
 482                  */
 483                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "", "USB CARD READER", "*"},
 484                 /*quirks*/ DA_Q_NO_6_BYTE
 485         },
 486         {
 487                 /*
 488                  * SmartDisk (Mitsumi) USB floppy drive
 489                  * PR: kern/50226
 490                  */
 491                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "MITSUMI", "USB FDD", "*"},
 492                 /*quirks*/ DA_Q_NO_6_BYTE|DA_Q_NO_SYNC_CACHE
 493         },
 494         {
 495                 /*
 496                  * OTi USB Flash Key
 497                  * PR: kern/51825
 498                  */
 499                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "OTi", "Flash Disk", "*"},
 500                 /*quirks*/ DA_Q_NO_6_BYTE
 501         }
 502 };
 503
 504 static  d_open_t        daopen;
 505 static  d_close_t       daclose;
 506 static  d_strategy_t    dastrategy;
 507 static  d_ioctl_t       daioctl;
 508 static  d_dump_t        dadump;
 509 static  periph_init_t   dainit;
 510 static  void            daasync(void *callback_arg, u_int32_t code,
 511                                 struct cam_path *path, void *arg);
 512 static  periph_ctor_t   daregister;
 513 static  periph_dtor_t   dacleanup;
 514 static  periph_start_t  dastart;
 515 static  periph_oninv_t  daoninvalidate;
 516 static  void            dadone(struct cam_periph *periph,
 517                                union ccb *done_ccb);
 518 static  int             daerror(union ccb *ccb, u_int32_t cam_flags,
 519                                 u_int32_t sense_flags);
 520 static void             daprevent(struct cam_periph *periph, int action);
 521 static void             dasetgeom(struct cam_periph *periph,
 522                                   struct scsi_read_capacity_data * rdcap);
 523 static timeout_t        dasendorderedtag;
 524 static void             dashutdown(void *arg, int howto);
 525
 526 #ifndef DA_DEFAULT_TIMEOUT
 527 #define DA_DEFAULT_TIMEOUT 60   /* Timeout in seconds */
 528 #endif
 529
 530 #ifndef DA_DEFAULT_RETRY
 531 #define DA_DEFAULT_RETRY        4
 532 #endif
 533
 534 static int da_retry_count = DA_DEFAULT_RETRY;
 535 static int da_default_timeout = DA_DEFAULT_TIMEOUT;
 536 static int da_no_6_byte = 0;
 537
 538 SYSCTL_NODE(_kern, OID_AUTO, cam, CTLFLAG_RD, 0, "CAM Subsystem");
 539 SYSCTL_NODE(_kern_cam, OID_AUTO, da, CTLFLAG_RD, 0,
 540             "CAM Direct Access Disk driver");
 541 SYSCTL_INT(_kern_cam_da, OID_AUTO, retry_count, CTLFLAG_RW,
 542            &da_retry_count, 0, "Normal I/O retry count");
 543 SYSCTL_INT(_kern_cam_da, OID_AUTO, default_timeout, CTLFLAG_RW,
 544            &da_default_timeout, 0, "Normal I/O timeout (in seconds)");
 545 SYSCTL_INT(_kern_cam_da, OID_AUTO, no_6_byte, CTLFLAG_RW,
 546            &da_no_6_byte, 0, "No 6 bytes commands");
 547
 548 /*
 549  * DA_ORDEREDTAG_INTERVAL determines how often, relative
 550  * to the default timeout, we check to see whether an ordered
 551  * tagged transaction is appropriate to prevent simple tag
 552  * starvation.  Since we'd like to ensure that there is at least
 553  * 1/2 of the timeout length left for a starved transaction to
 554  * complete after we've sent an ordered tag, we must poll at least
 555  * four times in every timeout period.  This takes care of the worst
 556  * case where a starved transaction starts during an interval that
 557  * meets the requirement "don't send an ordered tag" test so it takes
 558  * us two intervals to determine that a tag must be sent.
 559  */
 560 #ifndef DA_ORDEREDTAG_INTERVAL
 561 #define DA_ORDEREDTAG_INTERVAL 4
 562 #endif
 563
 564 static struct periph_driver dadriver =
 565 {
 566         dainit, "da",
 567         TAILQ_HEAD_INITIALIZER(dadriver.units), /* generation */ 0
 568 };
 569
 570 DATA_SET(periphdriver_set, dadriver);
 571
 572 /* For 2.2-stable support */
 573 #ifndef D_DISK
 574 #define D_DISK 0
 575 #endif
 576
 577 static struct cdevsw da_cdevsw = {
 578         /* name */      "da",
 579         /* maj */       DA_CDEV_MAJOR,
 580         /* flags */     D_DISK,
 581         /* port */      NULL,
 582         /* autoq */     0,
 583
 584         /* open */      daopen,
 585         /* close */     daclose,
 586         /* read */      physread,
 587         /* write */     physwrite,
 588         /* ioctl */     daioctl,
 589         /* poll */      nopoll,
 590         /* mmap */      nommap,
 591         /* strategy */  dastrategy,
 592         /* dump */      dadump,
 593         /* psize */     nopsize
 594 };
 595
 596 static SLIST_HEAD(,da_softc) softc_list;
 597 static struct extend_array *daperiphs;
 598
 599 static int
 600 daopen(dev_t dev, int flags, int fmt, struct thread *td)
 601 {
 602         struct cam_periph *periph;
 603         struct da_softc *softc;
 604         struct disklabel *label;
 605         int unit;
 606         int part;
 607         int error;
 608         int s;
 609
 610         unit = dkunit(dev);
 611         part = dkpart(dev);
 612         periph = cam_extend_get(daperiphs, unit);
 613         if (periph == NULL)
 614                 return (ENXIO);
 615
 616         softc = (struct da_softc *)periph->softc;
 617
 618         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE,
 619             ("daopen: dev=%s (unit %d , partition %d)\n", devtoname(dev),
 620              unit, part));
 621
 622         if ((error = cam_periph_lock(periph, PCATCH)) != 0) {
 623                 return (error); /* error code from tsleep */
 624         }
 625
 626         if (cam_periph_acquire(periph) != CAM_REQ_CMP)
 627                 return(ENXIO);
 628         softc->flags |= DA_FLAG_OPEN;
 629
 630         s = splsoftcam();
 631         if ((softc->flags & DA_FLAG_PACK_INVALID) != 0) {
 632                 /* Invalidate our pack information. */
 633                 disk_invalidate(&softc->disk);
 634                 softc->flags &= ~DA_FLAG_PACK_INVALID;
 635         }
 636         splx(s);
 637
 638         /* Do a read capacity */
 639         {
 640                 struct scsi_read_capacity_data *rcap;
 641                 union  ccb *ccb;
 642
 643                 rcap = (struct scsi_read_capacity_data *)malloc(sizeof(*rcap),
 644                                                                 M_TEMP,
 645                                                                 M_WAITOK);
 646
 647                 ccb = cam_periph_getccb(periph, /*priority*/1);
 648                 scsi_read_capacity(&ccb->csio,
 649                                    /*retries*/1,
 650                                    /*cbfncp*/dadone,
 651                                    MSG_SIMPLE_Q_TAG,
 652                                    rcap,
 653                                    SSD_FULL_SIZE,
 654                                    /*timeout*/60000);
 655                 ccb->ccb_h.ccb_bp = NULL;
 656
 657                 error = cam_periph_runccb(ccb, daerror, /*cam_flags*/0,
 658                                           /*sense_flags*/SF_RETRY_UA |
 659                                                          SF_RETRY_SELTO,
 660                                           &softc->device_stats);
 661
 662                 xpt_release_ccb(ccb);
 663
 664                 if (error == 0) {
 665                         dasetgeom(periph, rcap);
 666                 }
 667
 668                 free(rcap, M_TEMP);
 669         }
 670
 671         if (error == 0) {
 672                 struct ccb_getdev cgd;
 673
 674                 /* Build label for whole disk. */
 675                 label = &softc->disk.d_label;
 676                 bzero(label, sizeof(*label));
 677                 label->d_type = DTYPE_SCSI;
 678
 679                 /*
 680                  * Grab the inquiry data to get the vendor and product names.
 681                  * Put them in the typename and packname for the label.
 682                  */
 683                 xpt_setup_ccb(&cgd.ccb_h, periph->path, /*priority*/ 1);
 684                 cgd.ccb_h.func_code = XPT_GDEV_TYPE;
 685                 xpt_action((union ccb *)&cgd);
 686
 687                 strncpy(label->d_typename, cgd.inq_data.vendor,
 688                         min(SID_VENDOR_SIZE, sizeof(label->d_typename)));
 689                 strncpy(label->d_packname, cgd.inq_data.product,
 690                         min(SID_PRODUCT_SIZE, sizeof(label->d_packname)));
 691
 692                 label->d_secsize = softc->params.secsize;
 693                 label->d_nsectors = softc->params.secs_per_track;
 694                 label->d_ntracks = softc->params.heads;
 695                 label->d_ncylinders = softc->params.cylinders;
 696                 label->d_secpercyl = softc->params.heads
 697                                   * softc->params.secs_per_track;
 698                 label->d_secperunit = softc->params.sectors;
 699
 700                 if (((softc->flags & DA_FLAG_PACK_REMOVABLE) != 0)) {
 701                         daprevent(periph, PR_PREVENT);
 702                 }
 703
 704                 /*
 705                  * Check to see whether or not the blocksize is set yet.
 706                  * If it isn't, set it and then clear the blocksize
 707                  * unavailable flag for the device statistics.
 708                  */
 709                 if ((softc->device_stats.flags & DEVSTAT_BS_UNAVAILABLE) != 0){
 710                         softc->device_stats.block_size = softc->params.secsize;
 711                         softc->device_stats.flags &= ~DEVSTAT_BS_UNAVAILABLE;
 712                 }
 713         }
 714
 715         if (error != 0) {
 716                 if ((softc->flags & DA_FLAG_PACK_REMOVABLE) != 0) {
 717                         daprevent(periph, PR_ALLOW);
 718                 }
 719                 softc->flags &= ~DA_FLAG_OPEN;
 720                 cam_periph_release(periph);
 721         }
 722         cam_periph_unlock(periph);
 723         return (error);
 724 }
 725
 726 static int
 727 daclose(dev_t dev, int flag, int fmt, struct thread *td)
 728 {
 729         struct  cam_periph *periph;
 730         struct  da_softc *softc;
 731         int     unit;
 732         int     error;
 733
 734         unit = dkunit(dev);
 735         periph = cam_extend_get(daperiphs, unit);
 736         if (periph == NULL)
 737                 return (ENXIO);
 738
 739         softc = (struct da_softc *)periph->softc;
 740
 741         if ((error = cam_periph_lock(periph, 0)) != 0) {
 742                 return (error); /* error code from tsleep */
 743         }
 744
 745         if ((softc->quirks & DA_Q_NO_SYNC_CACHE) == 0) {
 746                 union   ccb *ccb;
 747
 748                 ccb = cam_periph_getccb(periph, /*priority*/1);
 749
 750                 scsi_synchronize_cache(&ccb->csio,
 751                                        /*retries*/1,
 752                                        /*cbfcnp*/dadone,
 753                                        MSG_SIMPLE_Q_TAG,
 754                                        /*begin_lba*/0,/* Cover the whole disk */
 755                                        /*lb_count*/0,
 756                                        SSD_FULL_SIZE,
 757                                        5 * 60 * 1000);
 758
 759                 cam_periph_runccb(ccb, /*error_routine*/NULL, /*cam_flags*/0,
 760                                   /*sense_flags*/SF_RETRY_UA,
 761                                   &softc->device_stats);
 762
 763                 if ((ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
 764                         if ((ccb->ccb_h.status & CAM_STATUS_MASK) ==
 765                              CAM_SCSI_STATUS_ERROR) {
 766                                 int asc, ascq;
 767                                 int sense_key, error_code;
 768
 769                                 scsi_extract_sense(&ccb->csio.sense_data,
 770                                                    &error_code,
 771                                                    &sense_key,
 772                                                    &asc, &ascq);
 773                                 if (sense_key != SSD_KEY_ILLEGAL_REQUEST)
 774                                         scsi_sense_print(&ccb->csio);
 775                         } else {
 776                                 xpt_print_path(periph->path);
 777                                 printf("Synchronize cache failed, status "
 778                                        "== 0x%x, scsi status == 0x%x\n",
 779                                        ccb->csio.ccb_h.status,
 780                                        ccb->csio.scsi_status);
 781                         }
 782                 }
 783
 784                 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
 785                         cam_release_devq(ccb->ccb_h.path,
 786                                          /*relsim_flags*/0,
 787                                          /*reduction*/0,
 788                                          /*timeout*/0,
 789                                          /*getcount_only*/0);
 790
 791                 xpt_release_ccb(ccb);
 792
 793         }
 794
 795         if ((softc->flags & DA_FLAG_PACK_REMOVABLE) != 0) {
 796                 daprevent(periph, PR_ALLOW);
 797                 /*
 798                  * If we've got removeable media, mark the blocksize as
 799                  * unavailable, since it could change when new media is
 800                  * inserted.
 801                  */
 802                 softc->device_stats.flags |= DEVSTAT_BS_UNAVAILABLE;
 803         }
 804
 805         softc->flags &= ~DA_FLAG_OPEN;
 806         cam_periph_unlock(periph);
 807         cam_periph_release(periph);
 808         return (0);
 809 }
 810
 811 /*
 812  * Actually translate the requested transfer into one the physical driver
 813  * can understand.  The transfer is described by a buf and will include
 814  * only one physical transfer.
 815  */
 816 static void
 817 dastrategy(struct buf *bp)
 818 {
 819         struct cam_periph *periph;
 820         struct da_softc *softc;
 821         u_int  unit;
 822         u_int  part;
 823         int    s;
 824
 825         unit = dkunit(bp->b_dev);
 826         part = dkpart(bp->b_dev);
 827         periph = cam_extend_get(daperiphs, unit);
 828         if (periph == NULL) {
 829                 bp->b_error = ENXIO;
 830                 goto bad;
 831         }
 832         softc = (struct da_softc *)periph->softc;
 833 #if 0
 834         /*
 835          * check it's not too big a transfer for our adapter
 836          */
 837         scsi_minphys(bp,&sd_switch);
 838 #endif
 839
 840         /*
 841          * Mask interrupts so that the pack cannot be invalidated until
 842          * after we are in the queue.  Otherwise, we might not properly
 843          * clean up one of the buffers.
 844          */
 845         s = splbio();
 846
 847         /*
 848          * If the device has been made invalid, error out
 849          */
 850         if ((softc->flags & DA_FLAG_PACK_INVALID)) {
 851                 splx(s);
 852                 bp->b_error = ENXIO;
 853                 goto bad;
 854         }
 855
 856         /*
 857          * Place it in the queue of disk activities for this disk
 858          */
 859         bufqdisksort(&softc->buf_queue, bp);
 860
 861         splx(s);
 862
 863         /*
 864          * Schedule ourselves for performing the work.
 865          */
 866         xpt_schedule(periph, /* XXX priority */1);
 867
 868         return;
 869 bad:
 870         bp->b_flags |= B_ERROR;
 871
 872         /*
 873          * Correctly set the buf to indicate a completed xfer
 874          */
 875         bp->b_resid = bp->b_bcount;
 876         biodone(bp);
 877         return;
 878 }
 879
 880 /* For 2.2-stable support */
 881 #ifndef ENOIOCTL
 882 #define ENOIOCTL -1
 883 #endif
 884
 885 static int
 886 daioctl(dev_t dev, u_long cmd, caddr_t addr, int flag, struct thread *td)
 887 {
 888         struct cam_periph *periph;
 889         struct da_softc *softc;
 890         int unit;
 891         int error;
 892
 893         unit = dkunit(dev);
 894         periph = cam_extend_get(daperiphs, unit);
 895         if (periph == NULL)
 896                 return (ENXIO);
 897
 898         softc = (struct da_softc *)periph->softc;
 899
 900         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("daioctl\n"));
 901
 902         if ((error = cam_periph_lock(periph, PCATCH)) != 0) {
 903                 return (error); /* error code from tsleep */
 904         }
 905
 906         error = cam_periph_ioctl(periph, cmd, addr, daerror);
 907
 908         cam_periph_unlock(periph);
 909
 910         return (error);
 911 }
 912
 913 static int
 914 dadump(dev_t dev)
 915 {
 916         struct      cam_periph *periph;
 917         struct      da_softc *softc;
 918         u_int       unit;
 919         u_int       part;
 920         u_int       secsize;
 921         u_int       num;        /* number of sectors to write */
 922         u_int       blknum;
 923         long        blkcnt;
 924         vm_offset_t addr;
 925         struct      ccb_scsiio csio;
 926         int         dumppages = MAXDUMPPGS;
 927         int         error;
 928         int         i;
 929
 930         /* toss any characters present prior to dump */
 931         while (cncheckc() != -1)
 932                 ;
 933
 934         unit = dkunit(dev);
 935         part = dkpart(dev);
 936         periph = cam_extend_get(daperiphs, unit);
 937         if (periph == NULL) {
 938                 return (ENXIO);
 939         }
 940         softc = (struct da_softc *)periph->softc;
 941
 942         if ((softc->flags & DA_FLAG_PACK_INVALID) != 0)
 943                 return (ENXIO);
 944
 945         error = disk_dumpcheck(dev, &num, &blknum, &secsize);
 946         if (error)
 947                 return (error);
 948
 949         addr = 0;       /* starting address */
 950         blkcnt = howmany(PAGE_SIZE, secsize);
 951
 952         while (num > 0) {
 953                 caddr_t va = NULL;
 954
 955                 if ((num / blkcnt) < dumppages)
 956                         dumppages = num / blkcnt;
 957
 958                 for (i = 0; i < dumppages; ++i) {
 959                         vm_offset_t a = addr + (i * PAGE_SIZE);
 960                         if (is_physical_memory(a))
 961                                 va = pmap_kenter_temporary(trunc_page(a), i);
 962                         else
 963                                 va = pmap_kenter_temporary(trunc_page(0), i);
 964                 }
 965
 966                 xpt_setup_ccb(&csio.ccb_h, periph->path, /*priority*/1);
 967                 csio.ccb_h.ccb_state = DA_CCB_DUMP;
 968                 scsi_read_write(&csio,
 969                                 /*retries*/1,
 970                                 dadone,
 971                                 MSG_ORDERED_Q_TAG,
 972                                 /*read*/FALSE,
 973                                 /*byte2*/0,
 974                                 /*minimum_cmd_size*/ softc->minimum_cmd_size,
 975                                 blknum,
 976                                 blkcnt * dumppages,
 977                                 /*data_ptr*/(u_int8_t *) va,
 978                                 /*dxfer_len*/blkcnt * secsize * dumppages,
 979                                 /*sense_len*/SSD_FULL_SIZE,
 980                                 DA_DEFAULT_TIMEOUT * 1000);
 981                 xpt_polled_action((union ccb *)&csio);
 982
 983                 if ((csio.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
 984                         printf("Aborting dump due to I/O error.\n");
 985                         if ((csio.ccb_h.status & CAM_STATUS_MASK) ==
 986                              CAM_SCSI_STATUS_ERROR)
 987                                 scsi_sense_print(&csio);
 988                         else
 989                                 printf("status == 0x%x, scsi status == 0x%x\n",
 990                                        csio.ccb_h.status, csio.scsi_status);
 991                         return(EIO);
 992                 }
 993
 994                 if (dumpstatus(addr, (off_t)num * softc->params.secsize) < 0)
 995                         return (EINTR);
 996
 997                 /* update block count */
 998                 num -= blkcnt * dumppages;
 999                 blknum += blkcnt * dumppages;
1000                 addr += PAGE_SIZE * dumppages;
1001         }
1002
1003         /*
1004          * Sync the disk cache contents to the physical media.
1005          */
1006         if ((softc->quirks & DA_Q_NO_SYNC_CACHE) == 0) {
1007
1008                 xpt_setup_ccb(&csio.ccb_h, periph->path, /*priority*/1);
1009                 csio.ccb_h.ccb_state = DA_CCB_DUMP;
1010                 scsi_synchronize_cache(&csio,
1011                                        /*retries*/1,
1012                                        /*cbfcnp*/dadone,
1013                                        MSG_SIMPLE_Q_TAG,
1014                                        /*begin_lba*/0,/* Cover the whole disk */
1015                                        /*lb_count*/0,
1016                                        SSD_FULL_SIZE,
1017                                        5 * 60 * 1000);
1018                 xpt_polled_action((union ccb *)&csio);
1019
1020                 if ((csio.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1021                         if ((csio.ccb_h.status & CAM_STATUS_MASK) ==
1022                              CAM_SCSI_STATUS_ERROR) {
1023                                 int asc, ascq;
1024                                 int sense_key, error_code;
1025
1026                                 scsi_extract_sense(&csio.sense_data,
1027                                                    &error_code,
1028                                                    &sense_key,
1029                                                    &asc, &ascq);
1030                                 if (sense_key != SSD_KEY_ILLEGAL_REQUEST)
1031                                         scsi_sense_print(&csio);
1032                         } else {
1033                                 xpt_print_path(periph->path);
1034                                 printf("Synchronize cache failed, status "
1035                                        "== 0x%x, scsi status == 0x%x\n",
1036                                        csio.ccb_h.status, csio.scsi_status);
1037                         }
1038                 }
1039         }
1040         return (0);
1041 }
1042
1043 static void
1044 dainit(void)
1045 {
1046         cam_status status;
1047         struct cam_path *path;
1048
1049         /*
1050          * Create our extend array for storing the devices we attach to.
1051          */
1052         daperiphs = cam_extend_new();
1053         SLIST_INIT(&softc_list);
1054         if (daperiphs == NULL) {
1055                 printf("da: Failed to alloc extend array!\n");
1056                 return;
1057         }
1058
1059         /*
1060          * Install a global async callback.  This callback will
1061          * receive async callbacks like "new device found".
1062          */
1063         status = xpt_create_path(&path, /*periph*/NULL, CAM_XPT_PATH_ID,
1064                                  CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD);
1065
1066         if (status == CAM_REQ_CMP) {
1067                 struct ccb_setasync csa;
1068
1069                 xpt_setup_ccb(&csa.ccb_h, path, /*priority*/5);
1070                 csa.ccb_h.func_code = XPT_SASYNC_CB;
1071                 csa.event_enable = AC_FOUND_DEVICE;
1072                 csa.callback = daasync;
1073                 csa.callback_arg = NULL;
1074                 xpt_action((union ccb *)&csa);
1075                 status = csa.ccb_h.status;
1076                 xpt_free_path(path);
1077         }
1078
1079         if (status != CAM_REQ_CMP) {
1080                 printf("da: Failed to attach master async callback "
1081                        "due to status 0x%x!\n", status);
1082         } else {
1083
1084                 /*
1085                  * Schedule a periodic event to occasionally send an
1086                  * ordered tag to a device.
1087                  */
1088                 timeout(dasendorderedtag, NULL,
1089                         (DA_DEFAULT_TIMEOUT * hz) / DA_ORDEREDTAG_INTERVAL);
1090
1091                 /* Register our shutdown event handler */
1092                 if ((EVENTHANDLER_REGISTER(shutdown_post_sync, dashutdown,
1093                                            NULL, SHUTDOWN_PRI_DEFAULT)) == NULL)
1094                     printf("dainit: shutdown event registration failed!\n");
1095         }
1096 }
1097
1098 static void
1099 daoninvalidate(struct cam_periph *periph)
1100 {
1101         int s;
1102         struct da_softc *softc;
1103         struct buf *q_bp;
1104         struct ccb_setasync csa;
1105
1106         softc = (struct da_softc *)periph->softc;
1107
1108         /*
1109          * De-register any async callbacks.
1110          */
1111         xpt_setup_ccb(&csa.ccb_h, periph->path,
1112                       /* priority */ 5);
1113         csa.ccb_h.func_code = XPT_SASYNC_CB;
1114         csa.event_enable = 0;
1115         csa.callback = daasync;
1116         csa.callback_arg = periph;
1117         xpt_action((union ccb *)&csa);
1118
1119         softc->flags |= DA_FLAG_PACK_INVALID;
1120
1121         /*
1122          * Although the oninvalidate() routines are always called at
1123          * splsoftcam, we need to be at splbio() here to keep the buffer
1124          * queue from being modified while we traverse it.
1125          */
1126         s = splbio();
1127
1128         /*
1129          * Return all queued I/O with ENXIO.
1130          * XXX Handle any transactions queued to the card
1131          *     with XPT_ABORT_CCB.
1132          */
1133         while ((q_bp = bufq_first(&softc->buf_queue)) != NULL){
1134                 bufq_remove(&softc->buf_queue, q_bp);
1135                 q_bp->b_resid = q_bp->b_bcount;
1136                 q_bp->b_error = ENXIO;
1137                 q_bp->b_flags |= B_ERROR;
1138                 biodone(q_bp);
1139         }
1140         splx(s);
1141
1142         SLIST_REMOVE(&softc_list, softc, da_softc, links);
1143
1144         xpt_print_path(periph->path);
1145         printf("lost device\n");
1146 }
1147
1148 static void
1149 dacleanup(struct cam_periph *periph)
1150 {
1151         struct da_softc *softc;
1152
1153         softc = (struct da_softc *)periph->softc;
1154
1155         devstat_remove_entry(&softc->device_stats);
1156         cam_extend_release(daperiphs, periph->unit_number);
1157         xpt_print_path(periph->path);
1158         printf("removing device entry\n");
1159         if (softc->disk.d_dev) {
1160                 disk_destroy(&softc->disk);
1161         }
1162         free(softc, M_DEVBUF);
1163 }
1164
1165 static void
1166 daasync(void *callback_arg, u_int32_t code,
1167         struct cam_path *path, void *arg)
1168 {
1169         struct cam_periph *periph;
1170
1171         periph = (struct cam_periph *)callback_arg;
1172         switch (code) {
1173         case AC_FOUND_DEVICE:
1174         {
1175                 struct ccb_getdev *cgd;
1176                 cam_status status;
1177
1178                 cgd = (struct ccb_getdev *)arg;
1179
1180                 if (SID_TYPE(&cgd->inq_data) != T_DIRECT
1181                     && SID_TYPE(&cgd->inq_data) != T_RBC
1182                     && SID_TYPE(&cgd->inq_data) != T_OPTICAL)
1183                         break;
1184
1185                 /*
1186                  * Allocate a peripheral instance for
1187                  * this device and start the probe
1188                  * process.
1189                  */
1190                 status = cam_periph_alloc(daregister, daoninvalidate,
1191                                           dacleanup, dastart,
1192                                           "da", CAM_PERIPH_BIO,
1193                                           cgd->ccb_h.path, daasync,
1194                                           AC_FOUND_DEVICE, cgd);
1195
1196                 if (status != CAM_REQ_CMP
1197                  && status != CAM_REQ_INPROG)
1198                         printf("daasync: Unable to attach to new device "
1199                                 "due to status 0x%x\n", status);
1200                 break;
1201         }
1202         case AC_SENT_BDR:
1203         case AC_BUS_RESET:
1204         {
1205                 struct da_softc *softc;
1206                 struct ccb_hdr *ccbh;
1207                 int s;
1208
1209                 softc = (struct da_softc *)periph->softc;
1210                 s = splsoftcam();
1211                 /*
1212                  * Don't fail on the expected unit attention
1213                  * that will occur.
1214                  */
1215                 softc->flags |= DA_FLAG_RETRY_UA;
1216                 for (ccbh = LIST_FIRST(&softc->pending_ccbs);
1217                      ccbh != NULL; ccbh = LIST_NEXT(ccbh, periph_links.le))
1218                         ccbh->ccb_state |= DA_CCB_RETRY_UA;
1219                 splx(s);
1220                 /* FALLTHROUGH*/
1221         }
1222         default:
1223                 cam_periph_async(periph, code, path, arg);
1224                 break;
1225         }
1226 }
1227
1228 static cam_status
1229 daregister(struct cam_periph *periph, void *arg)
1230 {
1231         int s;
1232         struct da_softc *softc;
1233         struct ccb_setasync csa;
1234         struct ccb_getdev *cgd;
1235         caddr_t match;
1236
1237         cgd = (struct ccb_getdev *)arg;
1238         if (periph == NULL) {
1239                 printf("daregister: periph was NULL!!\n");
1240                 return(CAM_REQ_CMP_ERR);
1241         }
1242
1243         if (cgd == NULL) {
1244                 printf("daregister: no getdev CCB, can't register device\n");
1245                 return(CAM_REQ_CMP_ERR);
1246         }
1247
1248         softc = (struct da_softc *)malloc(sizeof(*softc),M_DEVBUF,M_NOWAIT);
1249
1250         if (softc == NULL) {
1251                 printf("daregister: Unable to probe new device. "
1252                        "Unable to allocate softc\n");
1253                 return(CAM_REQ_CMP_ERR);
1254         }
1255
1256         bzero(softc, sizeof(*softc));
1257         LIST_INIT(&softc->pending_ccbs);
1258         softc->state = DA_STATE_PROBE;
1259         bufq_init(&softc->buf_queue);
1260         if (SID_IS_REMOVABLE(&cgd->inq_data))
1261                 softc->flags |= DA_FLAG_PACK_REMOVABLE;
1262         if ((cgd->inq_data.flags & SID_CmdQue) != 0)
1263                 softc->flags |= DA_FLAG_TAGGED_QUEUING;
1264
1265         periph->softc = softc;
1266
1267         cam_extend_set(daperiphs, periph->unit_number, periph);
1268
1269         /*
1270          * See if this device has any quirks.
1271          */
1272         match = cam_quirkmatch((caddr_t)&cgd->inq_data,
1273                                (caddr_t)da_quirk_table,
1274                                sizeof(da_quirk_table)/sizeof(*da_quirk_table),
1275                                sizeof(*da_quirk_table), scsi_inquiry_match);
1276
1277         if (match != NULL)
1278                 softc->quirks = ((struct da_quirk_entry *)match)->quirks;
1279         else
1280                 softc->quirks = DA_Q_NONE;
1281
1282         if (softc->quirks & DA_Q_NO_6_BYTE || SID_TYPE(&cgd->inq_data) == T_RBC)
1283                 softc->minimum_cmd_size = 10;
1284         else
1285                 softc->minimum_cmd_size = 6;
1286
1287         /*
1288          * Block our timeout handler while we
1289          * add this softc to the dev list.
1290          */
1291         s = splsoftclock();
1292         SLIST_INSERT_HEAD(&softc_list, softc, links);
1293         splx(s);
1294
1295         /*
1296          * The DA driver supports a blocksize, but
1297          * we don't know the blocksize until we do
1298          * a read capacity.  So, set a flag to
1299          * indicate that the blocksize is
1300          * unavailable right now.  We'll clear the
1301          * flag as soon as we've done a read capacity.
1302          */
1303         devstat_add_entry(&softc->device_stats, "da",
1304                           periph->unit_number, 0,
1305                           DEVSTAT_BS_UNAVAILABLE,
1306                           SID_TYPE(&cgd->inq_data) | DEVSTAT_TYPE_IF_SCSI,
1307                           DEVSTAT_PRIORITY_DISK);
1308
1309         /*
1310          * Register this media as a disk
1311          */
1312         disk_create(periph->unit_number, &softc->disk, 0, &da_cdevsw);
1313
1314         /*
1315          * Add async callbacks for bus reset and
1316          * bus device reset calls.  I don't bother
1317          * checking if this fails as, in most cases,
1318          * the system will function just fine without
1319          * them and the only alternative would be to
1320          * not attach the device on failure.
1321          */
1322         xpt_setup_ccb(&csa.ccb_h, periph->path, /*priority*/5);
1323         csa.ccb_h.func_code = XPT_SASYNC_CB;
1324         csa.event_enable = AC_SENT_BDR | AC_BUS_RESET | AC_LOST_DEVICE;
1325         csa.callback = daasync;
1326         csa.callback_arg = periph;
1327         xpt_action((union ccb *)&csa);
1328         /*
1329          * Lock this peripheral until we are setup.
1330          * This first call can't block
1331          */
1332         (void)cam_periph_lock(periph, 0);
1333         xpt_schedule(periph, /*priority*/5);
1334
1335         return(CAM_REQ_CMP);
1336 }
1337
1338 static void
1339 dastart(struct cam_periph *periph, union ccb *start_ccb)
1340 {
1341         struct da_softc *softc;
1342
1343         softc = (struct da_softc *)periph->softc;
1344
1345
1346         switch (softc->state) {
1347         case DA_STATE_NORMAL:
1348         {
1349                 /* Pull a buffer from the queue and get going on it */
1350                 struct buf *bp;
1351                 int s;
1352
1353                 /*
1354                  * See if there is a buf with work for us to do..
1355                  */
1356                 s = splbio();
1357                 bp = bufq_first(&softc->buf_queue);
1358                 if (periph->immediate_priority <= periph->pinfo.priority) {
1359                         CAM_DEBUG_PRINT(CAM_DEBUG_SUBTRACE,
1360                                         ("queuing for immediate ccb\n"));
1361                         start_ccb->ccb_h.ccb_state = DA_CCB_WAITING;
1362                         SLIST_INSERT_HEAD(&periph->ccb_list, &start_ccb->ccb_h,
1363                                           periph_links.sle);
1364                         periph->immediate_priority = CAM_PRIORITY_NONE;
1365                         splx(s);
1366                         wakeup(&periph->ccb_list);
1367                 } else if (bp == NULL) {
1368                         splx(s);
1369                         xpt_release_ccb(start_ccb);
1370                 } else {
1371                         int oldspl;
1372                         u_int8_t tag_code;
1373
1374                         bufq_remove(&softc->buf_queue, bp);
1375
1376                         devstat_start_transaction(&softc->device_stats);
1377
1378                         if ((bp->b_flags & B_ORDERED) != 0
1379                          || (softc->flags & DA_FLAG_NEED_OTAG) != 0) {
1380                                 softc->flags &= ~DA_FLAG_NEED_OTAG;
1381                                 softc->ordered_tag_count++;
1382                                 tag_code = MSG_ORDERED_Q_TAG;
1383                         } else {
1384                                 tag_code = MSG_SIMPLE_Q_TAG;
1385                         }
1386                         if (da_no_6_byte && softc->minimum_cmd_size == 6)
1387                                 softc->minimum_cmd_size = 10;
1388                         scsi_read_write(&start_ccb->csio,
1389                                         /*retries*/da_retry_count,
1390                                         dadone,
1391                                         tag_code,
1392                                         bp->b_flags & B_READ,
1393                                         /*byte2*/0,
1394                                         softc->minimum_cmd_size,
1395                                         bp->b_pblkno,
1396                                         bp->b_bcount / softc->params.secsize,
1397                                         bp->b_data,
1398                                         bp->b_bcount,
1399                                         /*sense_len*/SSD_FULL_SIZE,
1400                                         da_default_timeout * 1000);
1401                         start_ccb->ccb_h.ccb_state = DA_CCB_BUFFER_IO;
1402
1403                         /*
1404                          * Block out any asyncronous callbacks
1405                          * while we touch the pending ccb list.
1406                          */
1407                         oldspl = splcam();
1408                         LIST_INSERT_HEAD(&softc->pending_ccbs,
1409                                          &start_ccb->ccb_h, periph_links.le);
1410                         splx(oldspl);
1411
1412                         /* We expect a unit attention from this device */
1413                         if ((softc->flags & DA_FLAG_RETRY_UA) != 0) {
1414                                 start_ccb->ccb_h.ccb_state |= DA_CCB_RETRY_UA;
1415                                 softc->flags &= ~DA_FLAG_RETRY_UA;
1416                         }
1417
1418                         start_ccb->ccb_h.ccb_bp = bp;
1419                         bp = bufq_first(&softc->buf_queue);
1420                         splx(s);
1421
1422                         xpt_action(start_ccb);
1423                 }
1424
1425                 if (bp != NULL) {
1426                         /* Have more work to do, so ensure we stay scheduled */
1427                         xpt_schedule(periph, /* XXX priority */1);
1428                 }
1429                 break;
1430         }
1431         case DA_STATE_PROBE:
1432         {
1433                 struct ccb_scsiio *csio;
1434                 struct scsi_read_capacity_data *rcap;
1435
1436                 rcap = (struct scsi_read_capacity_data *)malloc(sizeof(*rcap),
1437                                                                 M_TEMP,
1438                                                                 M_NOWAIT);
1439                 if (rcap == NULL) {
1440                         printf("dastart: Couldn't malloc read_capacity data\n");
1441                         /* da_free_periph??? */
1442                         break;
1443                 }
1444                 csio = &start_ccb->csio;
1445                 scsi_read_capacity(csio,
1446                                    /*retries*/4,
1447                                    dadone,
1448                                    MSG_SIMPLE_Q_TAG,
1449                                    rcap,
1450                                    SSD_FULL_SIZE,
1451                                    /*timeout*/5000);
1452                 start_ccb->ccb_h.ccb_bp = NULL;
1453                 start_ccb->ccb_h.ccb_state = DA_CCB_PROBE;
1454                 xpt_action(start_ccb);
1455                 break;
1456         }
1457         }
1458 }
1459
1460 static int
1461 cmd6workaround(union ccb *ccb)
1462 {
1463         struct scsi_rw_6 cmd6;
1464         struct scsi_rw_10 *cmd10;
1465         struct da_softc *softc;
1466         u_int8_t *cdb;
1467         int frozen;
1468
1469         cdb = ccb->csio.cdb_io.cdb_bytes;
1470
1471         /* Translation only possible if CDB is an array and cmd is R/W6 */
1472         if ((ccb->ccb_h.flags & CAM_CDB_POINTER) != 0 ||
1473             (*cdb != READ_6 && *cdb != WRITE_6))
1474                 return 0;
1475
1476         xpt_print_path(ccb->ccb_h.path);
1477         printf("READ(6)/WRITE(6) not supported, "
1478                "increasing minimum_cmd_size to 10.\n");
1479         softc = (struct da_softc *)xpt_path_periph(ccb->ccb_h.path)->softc;
1480         softc->minimum_cmd_size = 10;
1481
1482         bcopy(cdb, &cmd6, sizeof(struct scsi_rw_6));
1483         cmd10 = (struct scsi_rw_10 *)cdb;
1484         cmd10->opcode = (cmd6.opcode == READ_6) ? READ_10 : WRITE_10;
1485         cmd10->byte2 = 0;
1486         scsi_ulto4b(scsi_3btoul(cmd6.addr), cmd10->addr);
1487         cmd10->reserved = 0;
1488         scsi_ulto2b(cmd6.length, cmd10->length);
1489         cmd10->control = cmd6.control;
1490         ccb->csio.cdb_len = sizeof(*cmd10);
1491
1492         /* Requeue request, unfreezing queue if necessary */
1493         frozen = (ccb->ccb_h.status & CAM_DEV_QFRZN) != 0;
1494         ccb->ccb_h.status = CAM_REQUEUE_REQ;
1495         xpt_action(ccb);
1496         if (frozen) {
1497                 cam_release_devq(ccb->ccb_h.path,
1498                                  /*relsim_flags*/0,
1499                                  /*reduction*/0,
1500                                  /*timeout*/0,
1501                                  /*getcount_only*/0);
1502         }
1503         return (ERESTART);
1504 }
1505
1506 static void
1507 dadone(struct cam_periph *periph, union ccb *done_ccb)
1508 {
1509         struct da_softc *softc;
1510         struct ccb_scsiio *csio;
1511
1512         softc = (struct da_softc *)periph->softc;
1513         csio = &done_ccb->csio;
1514         switch (csio->ccb_h.ccb_state & DA_CCB_TYPE_MASK) {
1515         case DA_CCB_BUFFER_IO:
1516         {
1517                 struct buf *bp;
1518                 int    oldspl;
1519
1520                 bp = (struct buf *)done_ccb->ccb_h.ccb_bp;
1521                 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1522                         int error;
1523                         int s;
1524                         int sf;
1525
1526                         if ((csio->ccb_h.ccb_state & DA_CCB_RETRY_UA) != 0)
1527                                 sf = SF_RETRY_UA;
1528                         else
1529                                 sf = 0;
1530
1531                         /* Retry selection timeouts */
1532                         sf |= SF_RETRY_SELTO;
1533
1534                         if ((error = daerror(done_ccb, 0, sf)) == ERESTART) {
1535                                 /*
1536                                  * A retry was scheuled, so
1537                                  * just return.
1538                                  */
1539                                 return;
1540                         }
1541                         if (error != 0) {
1542                                 struct buf *q_bp;
1543
1544                                 s = splbio();
1545
1546                                 if (error == ENXIO) {
1547                                         /*
1548                                          * Catastrophic error.  Mark our pack as
1549                                          * invalid.
1550                                          */
1551                                         /* XXX See if this is really a media
1552                                          *     change first.
1553                                          */
1554                                         xpt_print_path(periph->path);
1555                                         printf("Invalidating pack\n");
1556                                         softc->flags |= DA_FLAG_PACK_INVALID;
1557                                 }
1558
1559                                 /*
1560                                  * return all queued I/O with EIO, so that
1561                                  * the client can retry these I/Os in the
1562                                  * proper order should it attempt to recover.
1563                                  */
1564                                 while ((q_bp = bufq_first(&softc->buf_queue))
1565                                         != NULL) {
1566                                         bufq_remove(&softc->buf_queue, q_bp);
1567                                         q_bp->b_resid = q_bp->b_bcount;
1568                                         q_bp->b_error = EIO;
1569                                         q_bp->b_flags |= B_ERROR;
1570                                         biodone(q_bp);
1571                                 }
1572                                 splx(s);
1573                                 bp->b_error = error;
1574                                 bp->b_resid = bp->b_bcount;
1575                                 bp->b_flags |= B_ERROR;
1576                         } else {
1577                                 bp->b_resid = csio->resid;
1578                                 bp->b_error = 0;
1579                                 if (bp->b_resid != 0) {
1580                                         /* Short transfer ??? */
1581 #if 0
1582                                         if (cmd6workaround(done_ccb)
1583                                                                 == ERESTART)
1584                                                 return;
1585 #endif
1586                                         bp->b_flags |= B_ERROR;
1587                                 }
1588                         }
1589                         if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
1590                                 cam_release_devq(done_ccb->ccb_h.path,
1591                                                  /*relsim_flags*/0,
1592                                                  /*reduction*/0,
1593                                                  /*timeout*/0,
1594                                                  /*getcount_only*/0);
1595                 } else {
1596                         bp->b_resid = csio->resid;
1597                         if (csio->resid > 0) {
1598                                 /* Short transfer ??? */
1599 #if 0 /* XXX most of the broken umass devices need this ad-hoc work around */
1600                                 if (cmd6workaround(done_ccb) == ERESTART)
1601                                         return;
1602 #endif
1603                                 bp->b_flags |= B_ERROR;
1604                         }
1605                 }
1606
1607                 /*
1608                  * Block out any asyncronous callbacks
1609                  * while we touch the pending ccb list.
1610                  */
1611                 oldspl = splcam();
1612                 LIST_REMOVE(&done_ccb->ccb_h, periph_links.le);
1613                 splx(oldspl);
1614
1615                 if (softc->device_stats.busy_count == 0)
1616                         softc->flags |= DA_FLAG_WENT_IDLE;
1617
1618                 devstat_end_transaction_buf(&softc->device_stats, bp);
1619                 biodone(bp);
1620                 break;
1621         }
1622         case DA_CCB_PROBE:
1623         {
1624                 struct     scsi_read_capacity_data *rdcap;
1625                 char       announce_buf[80];
1626
1627                 rdcap = (struct scsi_read_capacity_data *)csio->data_ptr;
1628
1629                 if ((csio->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP) {
1630                         struct disk_params *dp;
1631
1632                         dasetgeom(periph, rdcap);
1633                         dp = &softc->params;
1634                         snprintf(announce_buf, sizeof(announce_buf),
1635                                 "%luMB (%u %u byte sectors: %dH %dS/T %dC)",
1636                                 (unsigned long) (((u_int64_t)dp->secsize *
1637                                 dp->sectors) / (1024*1024)), dp->sectors,
1638                                 dp->secsize, dp->heads, dp->secs_per_track,
1639                                 dp->cylinders);
1640                 } else {
1641                         int     error;
1642
1643                         announce_buf[0] = '\0';
1644
1645                         /*
1646                          * Retry any UNIT ATTENTION type errors.  They
1647                          * are expected at boot.
1648                          */
1649                         error = daerror(done_ccb, 0, SF_RETRY_UA |
1650                                         SF_RETRY_SELTO | SF_NO_PRINT);
1651                         if (error == ERESTART) {
1652                                 /*
1653                                  * A retry was scheuled, so
1654                                  * just return.
1655                                  */
1656                                 return;
1657                         } else if (error != 0) {
1658                                 struct scsi_sense_data *sense;
1659                                 int asc, ascq;
1660                                 int sense_key, error_code;
1661                                 int have_sense;
1662                                 cam_status status;
1663                                 struct ccb_getdev cgd;
1664
1665                                 /* Don't wedge this device's queue */
1666                                 cam_release_devq(done_ccb->ccb_h.path,
1667                                                  /*relsim_flags*/0,
1668                                                  /*reduction*/0,
1669                                                  /*timeout*/0,
1670                                                  /*getcount_only*/0);
1671
1672                                 status = done_ccb->ccb_h.status;
1673
1674                                 xpt_setup_ccb(&cgd.ccb_h,
1675                                               done_ccb->ccb_h.path,
1676                                               /* priority */ 1);
1677                                 cgd.ccb_h.func_code = XPT_GDEV_TYPE;
1678                                 xpt_action((union ccb *)&cgd);
1679
1680                                 if (((csio->ccb_h.flags & CAM_SENSE_PHYS) != 0)
1681                                  || ((csio->ccb_h.flags & CAM_SENSE_PTR) != 0)
1682                                  || ((status & CAM_AUTOSNS_VALID) == 0))
1683                                         have_sense = FALSE;
1684                                 else
1685                                         have_sense = TRUE;
1686
1687                                 if (have_sense) {
1688                                         sense = &csio->sense_data;
1689                                         scsi_extract_sense(sense, &error_code,
1690                                                            &sense_key,
1691                                                            &asc, &ascq);
1692                                 }
1693                                 /*
1694                                  * Attach to anything that claims to be a
1695                                  * direct access or optical disk device,
1696                                  * as long as it doesn't return a "Logical
1697                                  * unit not supported" (0x25) error.
1698                                  */
1699                                 if ((have_sense) && (asc != 0x25)
1700                                  && (error_code == SSD_CURRENT_ERROR))
1701                                         snprintf(announce_buf,
1702                                             sizeof(announce_buf),
1703                                                 "Attempt to query device "
1704                                                 "size failed: %s, %s",
1705                                                 scsi_sense_key_text[sense_key],
1706                                                 scsi_sense_desc(asc,ascq,
1707                                                                 &cgd.inq_data));
1708                                 else {
1709                                         if (have_sense)
1710                                                 scsi_sense_print(
1711                                                         &done_ccb->csio);
1712                                         else {
1713                                                 xpt_print_path(periph->path);
1714                                                 printf("got CAM status %#x\n",
1715                                                        done_ccb->ccb_h.status);
1716                                         }
1717
1718                                         xpt_print_path(periph->path);
1719                                         printf("fatal error, failed"
1720                                                " to attach to device\n");
1721
1722                                         /*
1723                                          * Free up resources.
1724                                          */
1725                                         cam_periph_invalidate(periph);
1726                                 }
1727                         }
1728                 }
1729                 free(rdcap, M_TEMP);
1730                 if (announce_buf[0] != '\0')
1731                         xpt_announce_periph(periph, announce_buf);
1732                 softc->state = DA_STATE_NORMAL;
1733                 /*
1734                  * Since our peripheral may be invalidated by an error
1735                  * above or an external event, we must release our CCB
1736                  * before releasing the probe lock on the peripheral.
1737                  * The peripheral will only go away once the last lock
1738                  * is removed, and we need it around for the CCB release
1739                  * operation.
1740                  */
1741                 xpt_release_ccb(done_ccb);
1742                 cam_periph_unlock(periph);
1743                 return;
1744         }
1745         case DA_CCB_WAITING:
1746         {
1747                 /* Caller will release the CCB */
1748                 wakeup(&done_ccb->ccb_h.cbfcnp);
1749                 return;
1750         }
1751         case DA_CCB_DUMP:
1752                 /* No-op.  We're polling */
1753                 return;
1754         default:
1755                 break;
1756         }
1757         xpt_release_ccb(done_ccb);
1758 }
1759
1760 static int
1761 daerror(union ccb *ccb, u_int32_t cam_flags, u_int32_t sense_flags)
1762 {
1763         struct da_softc   *softc;
1764         struct cam_periph *periph;
1765         int error, sense_key, error_code, asc, ascq;
1766
1767         periph = xpt_path_periph(ccb->ccb_h.path);
1768         softc = (struct da_softc *)periph->softc;
1769
1770         /*
1771          * Automatically detect devices that do not support
1772          * READ(6)/WRITE(6) and upgrade to using 10 byte cdbs.
1773          */
1774         error = 0;
1775         if ((ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_SCSI_STATUS_ERROR
1776           && ccb->csio.scsi_status == SCSI_STATUS_CHECK_COND) {
1777                 scsi_extract_sense(&ccb->csio.sense_data,
1778                                    &error_code, &sense_key, &asc, &ascq);
1779                 if (sense_key == SSD_KEY_ILLEGAL_REQUEST)
1780                         error = cmd6workaround(ccb);
1781         }
1782         if (error == ERESTART)
1783                 return (ERESTART);
1784
1785         /*
1786          * XXX
1787          * Until we have a better way of doing pack validation,
1788          * don't treat UAs as errors.
1789          */
1790         sense_flags |= SF_RETRY_UA;
1791         return(cam_periph_error(ccb, cam_flags, sense_flags,
1792                                 &softc->saved_ccb));
1793 }
1794
1795 static void
1796 daprevent(struct cam_periph *periph, int action)
1797 {
1798         struct  da_softc *softc;
1799         union   ccb *ccb;
1800         int     error;
1801
1802         softc = (struct da_softc *)periph->softc;
1803
1804         if (((action == PR_ALLOW)
1805           && (softc->flags & DA_FLAG_PACK_LOCKED) == 0)
1806          || ((action == PR_PREVENT)
1807           && (softc->flags & DA_FLAG_PACK_LOCKED) != 0)) {
1808                 return;
1809         }
1810
1811         ccb = cam_periph_getccb(periph, /*priority*/1);
1812
1813         scsi_prevent(&ccb->csio,
1814                      /*retries*/1,
1815                      /*cbcfp*/dadone,
1816                      MSG_SIMPLE_Q_TAG,
1817                      action,
1818                      SSD_FULL_SIZE,
1819                      5000);
1820
1821         error = cam_periph_runccb(ccb, /*error_routine*/NULL, /*cam_flags*/0,
1822                                   /*sense_flags*/0, &softc->device_stats);
1823
1824         if (error == 0) {
1825                 if (action == PR_ALLOW)
1826                         softc->flags &= ~DA_FLAG_PACK_LOCKED;
1827                 else
1828                         softc->flags |= DA_FLAG_PACK_LOCKED;
1829         }
1830
1831         xpt_release_ccb(ccb);
1832 }
1833
1834 static void
1835 dasetgeom(struct cam_periph *periph, struct scsi_read_capacity_data * rdcap)
1836 {
1837         struct ccb_calc_geometry ccg;
1838         struct da_softc *softc;
1839         struct disk_params *dp;
1840
1841         softc = (struct da_softc *)periph->softc;
1842
1843         dp = &softc->params;
1844         dp->secsize = scsi_4btoul(rdcap->length);
1845         dp->sectors = scsi_4btoul(rdcap->addr) + 1;
1846         /*
1847          * Have the controller provide us with a geometry
1848          * for this disk.  The only time the geometry
1849          * matters is when we boot and the controller
1850          * is the only one knowledgeable enough to come
1851          * up with something that will make this a bootable
1852          * device.
1853          */
1854         xpt_setup_ccb(&ccg.ccb_h, periph->path, /*priority*/1);
1855         ccg.ccb_h.func_code = XPT_CALC_GEOMETRY;
1856         ccg.block_size = dp->secsize;
1857         ccg.volume_size = dp->sectors;
1858         ccg.heads = 0;
1859         ccg.secs_per_track = 0;
1860         ccg.cylinders = 0;
1861         xpt_action((union ccb*)&ccg);
1862         dp->heads = ccg.heads;
1863         dp->secs_per_track = ccg.secs_per_track;
1864         dp->cylinders = ccg.cylinders;
1865 }
1866
1867 static void
1868 dasendorderedtag(void *arg)
1869 {
1870         struct da_softc *softc;
1871         int s;
1872
1873         for (softc = SLIST_FIRST(&softc_list);
1874              softc != NULL;
1875              softc = SLIST_NEXT(softc, links)) {
1876                 s = splsoftcam();
1877                 if ((softc->ordered_tag_count == 0)
1878                  && ((softc->flags & DA_FLAG_WENT_IDLE) == 0)) {
1879                         softc->flags |= DA_FLAG_NEED_OTAG;
1880                 }
1881                 if (softc->device_stats.busy_count > 0)
1882                         softc->flags &= ~DA_FLAG_WENT_IDLE;
1883
1884                 softc->ordered_tag_count = 0;
1885                 splx(s);
1886         }
1887         /* Queue us up again */
1888         timeout(dasendorderedtag, NULL,
1889                 (da_default_timeout * hz) / DA_ORDEREDTAG_INTERVAL);
1890 }
1891
1892 /*
1893  * Step through all DA peripheral drivers, and if the device is still open,
1894  * sync the disk cache to physical media.
1895  */
1896 static void
1897 dashutdown(void * arg, int howto)
1898 {
1899         struct cam_periph *periph;
1900         struct da_softc *softc;
1901
1902         for (periph = TAILQ_FIRST(&dadriver.units); periph != NULL;
1903              periph = TAILQ_NEXT(periph, unit_links)) {
1904                 union ccb ccb;
1905                 softc = (struct da_softc *)periph->softc;
1906
1907                 /*
1908                  * We only sync the cache if the drive is still open, and
1909                  * if the drive is capable of it..
1910                  */
1911                 if (((softc->flags & DA_FLAG_OPEN) == 0)
1912                  || (softc->quirks & DA_Q_NO_SYNC_CACHE))
1913                         continue;
1914
1915                 xpt_setup_ccb(&ccb.ccb_h, periph->path, /*priority*/1);
1916
1917                 ccb.ccb_h.ccb_state = DA_CCB_DUMP;
1918                 scsi_synchronize_cache(&ccb.csio,
1919                                        /*retries*/1,
1920                                        /*cbfcnp*/dadone,
1921                                        MSG_SIMPLE_Q_TAG,
1922                                        /*begin_lba*/0, /* whole disk */
1923                                        /*lb_count*/0,
1924                                        SSD_FULL_SIZE,
1925                                        5 * 60 * 1000);
1926
1927                 xpt_polled_action(&ccb);
1928
1929                 if ((ccb.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1930                         if (((ccb.ccb_h.status & CAM_STATUS_MASK) ==
1931                              CAM_SCSI_STATUS_ERROR)
1932                          && (ccb.csio.scsi_status == SCSI_STATUS_CHECK_COND)){
1933                                 int error_code, sense_key, asc, ascq;
1934
1935                                 scsi_extract_sense(&ccb.csio.sense_data,
1936                                                    &error_code, &sense_key,
1937                                                    &asc, &ascq);
1938
1939                                 if (sense_key != SSD_KEY_ILLEGAL_REQUEST)
1940                                         scsi_sense_print(&ccb.csio);
1941                         } else {
1942                                 xpt_print_path(periph->path);
1943                                 printf("Synchronize cache failed, status "
1944                                        "== 0x%x, scsi status == 0x%x\n",
1945                                        ccb.ccb_h.status, ccb.csio.scsi_status);
1946                         }
1947                 }
1948
1949                 if ((ccb.ccb_h.status & CAM_DEV_QFRZN) != 0)
1950                         cam_release_devq(ccb.ccb_h.path,
1951                                          /*relsim_flags*/0,
1952                                          /*reduction*/0,
1953                                          /*timeout*/0,
1954                                          /*getcount_only*/0);
1955
1956         }
1957 }
1958
1959 #else /* !_KERNEL */
1960
1961 /*
1962  * XXX This is only left out of the kernel build to silence warnings.  If,
1963  * for some reason this function is used in the kernel, the ifdefs should
1964  * be moved so it is included both in the kernel and userland.
1965  */
1966 void
1967 scsi_format_unit(struct ccb_scsiio *csio, u_int32_t retries,
1968                  void (*cbfcnp)(struct cam_periph *, union ccb *),
1969                  u_int8_t tag_action, u_int8_t byte2, u_int16_t ileave,
1970                  u_int8_t *data_ptr, u_int32_t dxfer_len, u_int8_t sense_len,
1971                  u_int32_t timeout)
1972 {
1973         struct scsi_format_unit *scsi_cmd;
1974
1975         scsi_cmd = (struct scsi_format_unit *)&csio->cdb_io.cdb_bytes;
1976         scsi_cmd->opcode = FORMAT_UNIT;
1977         scsi_cmd->byte2 = byte2;
1978         scsi_ulto2b(ileave, scsi_cmd->interleave);
1979
1980         cam_fill_csio(csio,
1981                       retries,
1982                       cbfcnp,
1983                       /*flags*/ (dxfer_len > 0) ? CAM_DIR_OUT : CAM_DIR_NONE,
1984                       tag_action,
1985                       data_ptr,
1986                       dxfer_len,
1987                       sense_len,
1988                       sizeof(*scsi_cmd),
1989                       timeout);
1990 }
1991
1992 #endif /* _KERNEL */