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 1.11 2003/11/29 15:23:33 drhodus 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                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "LEXAR", "JUMPDRIVE", "*"},
 445                 /*quirks*/ DA_Q_NO_6_BYTE
 446         },
 447         {
 448                 /*
 449                  * Pentax USB Optio 230 camera
 450                  * PR: kern/46369
 451                  */
 452                 {T_DIRECT, SIP_MEDIA_REMOVABLE,
 453                  "PENTAX", "DIGITAL_CAMERA", "*"},
 454                 /*quirks*/ DA_Q_NO_6_BYTE
 455         },
 456         {
 457                 /*
 458                  * Casio QV-R3 USB camera (uses Pentax chip as above)
 459                  * PR: kern/46545
 460                  */
 461                 {T_DIRECT, SIP_MEDIA_REMOVABLE,
 462                  "CASIO", "DIGITAL_CAMERA", "*"},
 463                 /*quirks*/ DA_Q_NO_6_BYTE
 464         },
 465         {
 466                 /*
 467                  * M-Systems DiskOnKey USB flash key
 468                  * PR: kern/47793
 469                  */
 470                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "M-Sys", "DiskOnKey", "*"},
 471                 /*quirks*/ DA_Q_NO_6_BYTE|DA_Q_NO_SYNC_CACHE
 472         },
 473         {
 474                 /*
 475                  * SanDisk ImageMate (I, II, ...) compact flash
 476                  * PR: kern/47877
 477                  */
 478                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "SanDisk", "ImageMate*", "*"},
 479                 /*quirks*/ DA_Q_NO_6_BYTE
 480         },
 481         {
 482                 /*
 483                  * Feiya "slider" dual-slot flash reader. The vendor field
 484                  * is blank so this may match other devices.
 485                  * PR: kern/50020
 486                  */
 487                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "", "USB CARD READER", "*"},
 488                 /*quirks*/ DA_Q_NO_6_BYTE
 489         },
 490         {
 491                 /*
 492                  * SmartDisk (Mitsumi) USB floppy drive
 493                  * PR: kern/50226
 494                  */
 495                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "MITSUMI", "USB FDD", "*"},
 496                 /*quirks*/ DA_Q_NO_6_BYTE|DA_Q_NO_SYNC_CACHE
 497         },
 498         {
 499                 /*
 500                  * OTi USB Flash Key
 501                  * PR: kern/51825
 502                  */
 503                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "OTi", "Flash Disk", "*"},
 504                 /*quirks*/ DA_Q_NO_6_BYTE
 505         }
 506 };
 507
 508 static  d_open_t        daopen;
 509 static  d_close_t       daclose;
 510 static  d_strategy_t    dastrategy;
 511 static  d_ioctl_t       daioctl;
 512 static  d_dump_t        dadump;
 513 static  periph_init_t   dainit;
 514 static  void            daasync(void *callback_arg, u_int32_t code,
 515                                 struct cam_path *path, void *arg);
 516 static  periph_ctor_t   daregister;
 517 static  periph_dtor_t   dacleanup;
 518 static  periph_start_t  dastart;
 519 static  periph_oninv_t  daoninvalidate;
 520 static  void            dadone(struct cam_periph *periph,
 521                                union ccb *done_ccb);
 522 static  int             daerror(union ccb *ccb, u_int32_t cam_flags,
 523                                 u_int32_t sense_flags);
 524 static void             daprevent(struct cam_periph *periph, int action);
 525 static void             dasetgeom(struct cam_periph *periph,
 526                                   struct scsi_read_capacity_data * rdcap);
 527 static timeout_t        dasendorderedtag;
 528 static void             dashutdown(void *arg, int howto);
 529
 530 #ifndef DA_DEFAULT_TIMEOUT
 531 #define DA_DEFAULT_TIMEOUT 60   /* Timeout in seconds */
 532 #endif
 533
 534 #ifndef DA_DEFAULT_RETRY
 535 #define DA_DEFAULT_RETRY        4
 536 #endif
 537
 538 static int da_retry_count = DA_DEFAULT_RETRY;
 539 static int da_default_timeout = DA_DEFAULT_TIMEOUT;
 540 static int da_no_6_byte = 0;
 541
 542 SYSCTL_NODE(_kern, OID_AUTO, cam, CTLFLAG_RD, 0, "CAM Subsystem");
 543 SYSCTL_NODE(_kern_cam, OID_AUTO, da, CTLFLAG_RD, 0,
 544             "CAM Direct Access Disk driver");
 545 SYSCTL_INT(_kern_cam_da, OID_AUTO, retry_count, CTLFLAG_RW,
 546            &da_retry_count, 0, "Normal I/O retry count");
 547 SYSCTL_INT(_kern_cam_da, OID_AUTO, default_timeout, CTLFLAG_RW,
 548            &da_default_timeout, 0, "Normal I/O timeout (in seconds)");
 549 SYSCTL_INT(_kern_cam_da, OID_AUTO, no_6_byte, CTLFLAG_RW,
 550            &da_no_6_byte, 0, "No 6 bytes commands");
 551
 552 /*
 553  * DA_ORDEREDTAG_INTERVAL determines how often, relative
 554  * to the default timeout, we check to see whether an ordered
 555  * tagged transaction is appropriate to prevent simple tag
 556  * starvation.  Since we'd like to ensure that there is at least
 557  * 1/2 of the timeout length left for a starved transaction to
 558  * complete after we've sent an ordered tag, we must poll at least
 559  * four times in every timeout period.  This takes care of the worst
 560  * case where a starved transaction starts during an interval that
 561  * meets the requirement "don't send an ordered tag" test so it takes
 562  * us two intervals to determine that a tag must be sent.
 563  */
 564 #ifndef DA_ORDEREDTAG_INTERVAL
 565 #define DA_ORDEREDTAG_INTERVAL 4
 566 #endif
 567
 568 static struct periph_driver dadriver =
 569 {
 570         dainit, "da",
 571         TAILQ_HEAD_INITIALIZER(dadriver.units), /* generation */ 0
 572 };
 573
 574 DATA_SET(periphdriver_set, dadriver);
 575
 576 /* For 2.2-stable support */
 577 #ifndef D_DISK
 578 #define D_DISK 0
 579 #endif
 580
 581 static struct cdevsw da_cdevsw = {
 582         /* name */      "da",
 583         /* maj */       DA_CDEV_MAJOR,
 584         /* flags */     D_DISK,
 585         /* port */      NULL,
 586         /* autoq */     0,
 587
 588         /* open */      daopen,
 589         /* close */     daclose,
 590         /* read */      physread,
 591         /* write */     physwrite,
 592         /* ioctl */     daioctl,
 593         /* poll */      nopoll,
 594         /* mmap */      nommap,
 595         /* strategy */  dastrategy,
 596         /* dump */      dadump,
 597         /* psize */     nopsize
 598 };
 599
 600 static SLIST_HEAD(,da_softc) softc_list;
 601 static struct extend_array *daperiphs;
 602
 603 static int
 604 daopen(dev_t dev, int flags, int fmt, struct thread *td)
 605 {
 606         struct cam_periph *periph;
 607         struct da_softc *softc;
 608         struct disklabel *label;
 609         int unit;
 610         int part;
 611         int error;
 612         int s;
 613
 614         unit = dkunit(dev);
 615         part = dkpart(dev);
 616         periph = cam_extend_get(daperiphs, unit);
 617         if (periph == NULL)
 618                 return (ENXIO);
 619
 620         softc = (struct da_softc *)periph->softc;
 621
 622         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE,
 623             ("daopen: dev=%s (unit %d , partition %d)\n", devtoname(dev),
 624              unit, part));
 625
 626         if ((error = cam_periph_lock(periph, PCATCH)) != 0) {
 627                 return (error); /* error code from tsleep */
 628         }
 629
 630         if (cam_periph_acquire(periph) != CAM_REQ_CMP)
 631                 return(ENXIO);
 632         softc->flags |= DA_FLAG_OPEN;
 633
 634         s = splsoftcam();
 635         if ((softc->flags & DA_FLAG_PACK_INVALID) != 0) {
 636                 /* Invalidate our pack information. */
 637                 disk_invalidate(&softc->disk);
 638                 softc->flags &= ~DA_FLAG_PACK_INVALID;
 639         }
 640         splx(s);
 641
 642         /* Do a read capacity */
 643         {
 644                 struct scsi_read_capacity_data *rcap;
 645                 union  ccb *ccb;
 646
 647                 rcap = (struct scsi_read_capacity_data *)malloc(sizeof(*rcap),
 648                                                                 M_TEMP,
 649                                                                 M_WAITOK);
 650
 651                 ccb = cam_periph_getccb(periph, /*priority*/1);
 652                 scsi_read_capacity(&ccb->csio,
 653                                    /*retries*/1,
 654                                    /*cbfncp*/dadone,
 655                                    MSG_SIMPLE_Q_TAG,
 656                                    rcap,
 657                                    SSD_FULL_SIZE,
 658                                    /*timeout*/60000);
 659                 ccb->ccb_h.ccb_bp = NULL;
 660
 661                 error = cam_periph_runccb(ccb, daerror, /*cam_flags*/0,
 662                                           /*sense_flags*/SF_RETRY_UA |
 663                                                          SF_RETRY_SELTO,
 664                                           &softc->device_stats);
 665
 666                 xpt_release_ccb(ccb);
 667
 668                 if (error == 0) {
 669                         dasetgeom(periph, rcap);
 670                 }
 671
 672                 free(rcap, M_TEMP);
 673         }
 674
 675         if (error == 0) {
 676                 struct ccb_getdev cgd;
 677
 678                 /* Build label for whole disk. */
 679                 label = &softc->disk.d_label;
 680                 bzero(label, sizeof(*label));
 681                 label->d_type = DTYPE_SCSI;
 682
 683                 /*
 684                  * Grab the inquiry data to get the vendor and product names.
 685                  * Put them in the typename and packname for the label.
 686                  */
 687                 xpt_setup_ccb(&cgd.ccb_h, periph->path, /*priority*/ 1);
 688                 cgd.ccb_h.func_code = XPT_GDEV_TYPE;
 689                 xpt_action((union ccb *)&cgd);
 690
 691                 strncpy(label->d_typename, cgd.inq_data.vendor,
 692                         min(SID_VENDOR_SIZE, sizeof(label->d_typename)));
 693                 strncpy(label->d_packname, cgd.inq_data.product,
 694                         min(SID_PRODUCT_SIZE, sizeof(label->d_packname)));
 695
 696                 label->d_secsize = softc->params.secsize;
 697                 label->d_nsectors = softc->params.secs_per_track;
 698                 label->d_ntracks = softc->params.heads;
 699                 label->d_ncylinders = softc->params.cylinders;
 700                 label->d_secpercyl = softc->params.heads
 701                                   * softc->params.secs_per_track;
 702                 label->d_secperunit = softc->params.sectors;
 703
 704                 if (((softc->flags & DA_FLAG_PACK_REMOVABLE) != 0)) {
 705                         daprevent(periph, PR_PREVENT);
 706                 }
 707
 708                 /*
 709                  * Check to see whether or not the blocksize is set yet.
 710                  * If it isn't, set it and then clear the blocksize
 711                  * unavailable flag for the device statistics.
 712                  */
 713                 if ((softc->device_stats.flags & DEVSTAT_BS_UNAVAILABLE) != 0){
 714                         softc->device_stats.block_size = softc->params.secsize;
 715                         softc->device_stats.flags &= ~DEVSTAT_BS_UNAVAILABLE;
 716                 }
 717         }
 718
 719         if (error != 0) {
 720                 if ((softc->flags & DA_FLAG_PACK_REMOVABLE) != 0) {
 721                         daprevent(periph, PR_ALLOW);
 722                 }
 723                 softc->flags &= ~DA_FLAG_OPEN;
 724                 cam_periph_release(periph);
 725         }
 726         cam_periph_unlock(periph);
 727         return (error);
 728 }
 729
 730 static int
 731 daclose(dev_t dev, int flag, int fmt, struct thread *td)
 732 {
 733         struct  cam_periph *periph;
 734         struct  da_softc *softc;
 735         int     unit;
 736         int     error;
 737
 738         unit = dkunit(dev);
 739         periph = cam_extend_get(daperiphs, unit);
 740         if (periph == NULL)
 741                 return (ENXIO);
 742
 743         softc = (struct da_softc *)periph->softc;
 744
 745         if ((error = cam_periph_lock(periph, 0)) != 0) {
 746                 return (error); /* error code from tsleep */
 747         }
 748
 749         if ((softc->quirks & DA_Q_NO_SYNC_CACHE) == 0) {
 750                 union   ccb *ccb;
 751
 752                 ccb = cam_periph_getccb(periph, /*priority*/1);
 753
 754                 scsi_synchronize_cache(&ccb->csio,
 755                                        /*retries*/1,
 756                                        /*cbfcnp*/dadone,
 757                                        MSG_SIMPLE_Q_TAG,
 758                                        /*begin_lba*/0,/* Cover the whole disk */
 759                                        /*lb_count*/0,
 760                                        SSD_FULL_SIZE,
 761                                        5 * 60 * 1000);
 762
 763                 cam_periph_runccb(ccb, /*error_routine*/NULL, /*cam_flags*/0,
 764                                   /*sense_flags*/SF_RETRY_UA,
 765                                   &softc->device_stats);
 766
 767                 if ((ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
 768                         if ((ccb->ccb_h.status & CAM_STATUS_MASK) ==
 769                              CAM_SCSI_STATUS_ERROR) {
 770                                 int asc, ascq;
 771                                 int sense_key, error_code;
 772
 773                                 scsi_extract_sense(&ccb->csio.sense_data,
 774                                                    &error_code,
 775                                                    &sense_key,
 776                                                    &asc, &ascq);
 777                                 if (sense_key != SSD_KEY_ILLEGAL_REQUEST)
 778                                         scsi_sense_print(&ccb->csio);
 779                         } else {
 780                                 xpt_print_path(periph->path);
 781                                 printf("Synchronize cache failed, status "
 782                                        "== 0x%x, scsi status == 0x%x\n",
 783                                        ccb->csio.ccb_h.status,
 784                                        ccb->csio.scsi_status);
 785                         }
 786                 }
 787
 788                 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
 789                         cam_release_devq(ccb->ccb_h.path,
 790                                          /*relsim_flags*/0,
 791                                          /*reduction*/0,
 792                                          /*timeout*/0,
 793                                          /*getcount_only*/0);
 794
 795                 xpt_release_ccb(ccb);
 796
 797         }
 798
 799         if ((softc->flags & DA_FLAG_PACK_REMOVABLE) != 0) {
 800                 daprevent(periph, PR_ALLOW);
 801                 /*
 802                  * If we've got removeable media, mark the blocksize as
 803                  * unavailable, since it could change when new media is
 804                  * inserted.
 805                  */
 806                 softc->device_stats.flags |= DEVSTAT_BS_UNAVAILABLE;
 807         }
 808
 809         softc->flags &= ~DA_FLAG_OPEN;
 810         cam_periph_unlock(periph);
 811         cam_periph_release(periph);
 812         return (0);
 813 }
 814
 815 /*
 816  * Actually translate the requested transfer into one the physical driver
 817  * can understand.  The transfer is described by a buf and will include
 818  * only one physical transfer.
 819  */
 820 static void
 821 dastrategy(struct buf *bp)
 822 {
 823         struct cam_periph *periph;
 824         struct da_softc *softc;
 825         u_int  unit;
 826         u_int  part;
 827         int    s;
 828
 829         unit = dkunit(bp->b_dev);
 830         part = dkpart(bp->b_dev);
 831         periph = cam_extend_get(daperiphs, unit);
 832         if (periph == NULL) {
 833                 bp->b_error = ENXIO;
 834                 goto bad;
 835         }
 836         softc = (struct da_softc *)periph->softc;
 837 #if 0
 838         /*
 839          * check it's not too big a transfer for our adapter
 840          */
 841         scsi_minphys(bp,&sd_switch);
 842 #endif
 843
 844         /*
 845          * Mask interrupts so that the pack cannot be invalidated until
 846          * after we are in the queue.  Otherwise, we might not properly
 847          * clean up one of the buffers.
 848          */
 849         s = splbio();
 850
 851         /*
 852          * If the device has been made invalid, error out
 853          */
 854         if ((softc->flags & DA_FLAG_PACK_INVALID)) {
 855                 splx(s);
 856                 bp->b_error = ENXIO;
 857                 goto bad;
 858         }
 859
 860         /*
 861          * Place it in the queue of disk activities for this disk
 862          */
 863         bufqdisksort(&softc->buf_queue, bp);
 864
 865         splx(s);
 866
 867         /*
 868          * Schedule ourselves for performing the work.
 869          */
 870         xpt_schedule(periph, /* XXX priority */1);
 871
 872         return;
 873 bad:
 874         bp->b_flags |= B_ERROR;
 875
 876         /*
 877          * Correctly set the buf to indicate a completed xfer
 878          */
 879         bp->b_resid = bp->b_bcount;
 880         biodone(bp);
 881         return;
 882 }
 883
 884 /* For 2.2-stable support */
 885 #ifndef ENOIOCTL
 886 #define ENOIOCTL -1
 887 #endif
 888
 889 static int
 890 daioctl(dev_t dev, u_long cmd, caddr_t addr, int flag, struct thread *td)
 891 {
 892         struct cam_periph *periph;
 893         struct da_softc *softc;
 894         int unit;
 895         int error;
 896
 897         unit = dkunit(dev);
 898         periph = cam_extend_get(daperiphs, unit);
 899         if (periph == NULL)
 900                 return (ENXIO);
 901
 902         softc = (struct da_softc *)periph->softc;
 903
 904         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("daioctl\n"));
 905
 906         if ((error = cam_periph_lock(periph, PCATCH)) != 0) {
 907                 return (error); /* error code from tsleep */
 908         }
 909
 910         error = cam_periph_ioctl(periph, cmd, addr, daerror);
 911
 912         cam_periph_unlock(periph);
 913
 914         return (error);
 915 }
 916
 917 static int
 918 dadump(dev_t dev)
 919 {
 920         struct      cam_periph *periph;
 921         struct      da_softc *softc;
 922         u_int       unit;
 923         u_int       part;
 924         u_int       secsize;
 925         u_int       num;        /* number of sectors to write */
 926         u_int       blknum;
 927         long        blkcnt;
 928         vm_offset_t addr;
 929         struct      ccb_scsiio csio;
 930         int         dumppages = MAXDUMPPGS;
 931         int         error;
 932         int         i;
 933
 934         /* toss any characters present prior to dump */
 935         while (cncheckc() != -1)
 936                 ;
 937
 938         unit = dkunit(dev);
 939         part = dkpart(dev);
 940         periph = cam_extend_get(daperiphs, unit);
 941         if (periph == NULL) {
 942                 return (ENXIO);
 943         }
 944         softc = (struct da_softc *)periph->softc;
 945
 946         if ((softc->flags & DA_FLAG_PACK_INVALID) != 0)
 947                 return (ENXIO);
 948
 949         error = disk_dumpcheck(dev, &num, &blknum, &secsize);
 950         if (error)
 951                 return (error);
 952
 953         addr = 0;       /* starting address */
 954         blkcnt = howmany(PAGE_SIZE, secsize);
 955
 956         while (num > 0) {
 957                 caddr_t va = NULL;
 958
 959                 if ((num / blkcnt) < dumppages)
 960                         dumppages = num / blkcnt;
 961
 962                 for (i = 0; i < dumppages; ++i) {
 963                         vm_offset_t a = addr + (i * PAGE_SIZE);
 964                         if (is_physical_memory(a))
 965                                 va = pmap_kenter_temporary(trunc_page(a), i);
 966                         else
 967                                 va = pmap_kenter_temporary(trunc_page(0), i);
 968                 }
 969
 970                 xpt_setup_ccb(&csio.ccb_h, periph->path, /*priority*/1);
 971                 csio.ccb_h.ccb_state = DA_CCB_DUMP;
 972                 scsi_read_write(&csio,
 973                                 /*retries*/1,
 974                                 dadone,
 975                                 MSG_ORDERED_Q_TAG,
 976                                 /*read*/FALSE,
 977                                 /*byte2*/0,
 978                                 /*minimum_cmd_size*/ softc->minimum_cmd_size,
 979                                 blknum,
 980                                 blkcnt * dumppages,
 981                                 /*data_ptr*/(u_int8_t *) va,
 982                                 /*dxfer_len*/blkcnt * secsize * dumppages,
 983                                 /*sense_len*/SSD_FULL_SIZE,
 984                                 DA_DEFAULT_TIMEOUT * 1000);
 985                 xpt_polled_action((union ccb *)&csio);
 986
 987                 if ((csio.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
 988                         printf("Aborting dump due to I/O error.\n");
 989                         if ((csio.ccb_h.status & CAM_STATUS_MASK) ==
 990                              CAM_SCSI_STATUS_ERROR)
 991                                 scsi_sense_print(&csio);
 992                         else
 993                                 printf("status == 0x%x, scsi status == 0x%x\n",
 994                                        csio.ccb_h.status, csio.scsi_status);
 995                         return(EIO);
 996                 }
 997
 998                 if (dumpstatus(addr, (off_t)num * softc->params.secsize) < 0)
 999                         return (EINTR);
1000
1001                 /* update block count */
1002                 num -= blkcnt * dumppages;
1003                 blknum += blkcnt * dumppages;
1004                 addr += PAGE_SIZE * dumppages;
1005         }
1006
1007         /*
1008          * Sync the disk cache contents to the physical media.
1009          */
1010         if ((softc->quirks & DA_Q_NO_SYNC_CACHE) == 0) {
1011
1012                 xpt_setup_ccb(&csio.ccb_h, periph->path, /*priority*/1);
1013                 csio.ccb_h.ccb_state = DA_CCB_DUMP;
1014                 scsi_synchronize_cache(&csio,
1015                                        /*retries*/1,
1016                                        /*cbfcnp*/dadone,
1017                                        MSG_SIMPLE_Q_TAG,
1018                                        /*begin_lba*/0,/* Cover the whole disk */
1019                                        /*lb_count*/0,
1020                                        SSD_FULL_SIZE,
1021                                        5 * 60 * 1000);
1022                 xpt_polled_action((union ccb *)&csio);
1023
1024                 if ((csio.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1025                         if ((csio.ccb_h.status & CAM_STATUS_MASK) ==
1026                              CAM_SCSI_STATUS_ERROR) {
1027                                 int asc, ascq;
1028                                 int sense_key, error_code;
1029
1030                                 scsi_extract_sense(&csio.sense_data,
1031                                                    &error_code,
1032                                                    &sense_key,
1033                                                    &asc, &ascq);
1034                                 if (sense_key != SSD_KEY_ILLEGAL_REQUEST)
1035                                         scsi_sense_print(&csio);
1036                         } else {
1037                                 xpt_print_path(periph->path);
1038                                 printf("Synchronize cache failed, status "
1039                                        "== 0x%x, scsi status == 0x%x\n",
1040                                        csio.ccb_h.status, csio.scsi_status);
1041                         }
1042                 }
1043         }
1044         return (0);
1045 }
1046
1047 static void
1048 dainit(void)
1049 {
1050         cam_status status;
1051         struct cam_path *path;
1052
1053         /*
1054          * Create our extend array for storing the devices we attach to.
1055          */
1056         daperiphs = cam_extend_new();
1057         SLIST_INIT(&softc_list);
1058         if (daperiphs == NULL) {
1059                 printf("da: Failed to alloc extend array!\n");
1060                 return;
1061         }
1062
1063         /*
1064          * Install a global async callback.  This callback will
1065          * receive async callbacks like "new device found".
1066          */
1067         status = xpt_create_path(&path, /*periph*/NULL, CAM_XPT_PATH_ID,
1068                                  CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD);
1069
1070         if (status == CAM_REQ_CMP) {
1071                 struct ccb_setasync csa;
1072
1073                 xpt_setup_ccb(&csa.ccb_h, path, /*priority*/5);
1074                 csa.ccb_h.func_code = XPT_SASYNC_CB;
1075                 csa.event_enable = AC_FOUND_DEVICE;
1076                 csa.callback = daasync;
1077                 csa.callback_arg = NULL;
1078                 xpt_action((union ccb *)&csa);
1079                 status = csa.ccb_h.status;
1080                 xpt_free_path(path);
1081         }
1082
1083         if (status != CAM_REQ_CMP) {
1084                 printf("da: Failed to attach master async callback "
1085                        "due to status 0x%x!\n", status);
1086         } else {
1087
1088                 /*
1089                  * Schedule a periodic event to occasionally send an
1090                  * ordered tag to a device.
1091                  */
1092                 timeout(dasendorderedtag, NULL,
1093                         (DA_DEFAULT_TIMEOUT * hz) / DA_ORDEREDTAG_INTERVAL);
1094
1095                 /* Register our shutdown event handler */
1096                 if ((EVENTHANDLER_REGISTER(shutdown_post_sync, dashutdown,
1097                                            NULL, SHUTDOWN_PRI_DEFAULT)) == NULL)
1098                     printf("dainit: shutdown event registration failed!\n");
1099         }
1100 }
1101
1102 static void
1103 daoninvalidate(struct cam_periph *periph)
1104 {
1105         int s;
1106         struct da_softc *softc;
1107         struct buf *q_bp;
1108         struct ccb_setasync csa;
1109
1110         softc = (struct da_softc *)periph->softc;
1111
1112         /*
1113          * De-register any async callbacks.
1114          */
1115         xpt_setup_ccb(&csa.ccb_h, periph->path,
1116                       /* priority */ 5);
1117         csa.ccb_h.func_code = XPT_SASYNC_CB;
1118         csa.event_enable = 0;
1119         csa.callback = daasync;
1120         csa.callback_arg = periph;
1121         xpt_action((union ccb *)&csa);
1122
1123         softc->flags |= DA_FLAG_PACK_INVALID;
1124
1125         /*
1126          * Although the oninvalidate() routines are always called at
1127          * splsoftcam, we need to be at splbio() here to keep the buffer
1128          * queue from being modified while we traverse it.
1129          */
1130         s = splbio();
1131
1132         /*
1133          * Return all queued I/O with ENXIO.
1134          * XXX Handle any transactions queued to the card
1135          *     with XPT_ABORT_CCB.
1136          */
1137         while ((q_bp = bufq_first(&softc->buf_queue)) != NULL){
1138                 bufq_remove(&softc->buf_queue, q_bp);
1139                 q_bp->b_resid = q_bp->b_bcount;
1140                 q_bp->b_error = ENXIO;
1141                 q_bp->b_flags |= B_ERROR;
1142                 biodone(q_bp);
1143         }
1144         splx(s);
1145
1146         SLIST_REMOVE(&softc_list, softc, da_softc, links);
1147
1148         xpt_print_path(periph->path);
1149         printf("lost device\n");
1150 }
1151
1152 static void
1153 dacleanup(struct cam_periph *periph)
1154 {
1155         struct da_softc *softc;
1156
1157         softc = (struct da_softc *)periph->softc;
1158
1159         devstat_remove_entry(&softc->device_stats);
1160         cam_extend_release(daperiphs, periph->unit_number);
1161         xpt_print_path(periph->path);
1162         printf("removing device entry\n");
1163         if (softc->disk.d_dev) {
1164                 disk_destroy(&softc->disk);
1165         }
1166         free(softc, M_DEVBUF);
1167 }
1168
1169 static void
1170 daasync(void *callback_arg, u_int32_t code,
1171         struct cam_path *path, void *arg)
1172 {
1173         struct cam_periph *periph;
1174
1175         periph = (struct cam_periph *)callback_arg;
1176         switch (code) {
1177         case AC_FOUND_DEVICE:
1178         {
1179                 struct ccb_getdev *cgd;
1180                 cam_status status;
1181
1182                 cgd = (struct ccb_getdev *)arg;
1183
1184                 if (SID_TYPE(&cgd->inq_data) != T_DIRECT
1185                     && SID_TYPE(&cgd->inq_data) != T_RBC
1186                     && SID_TYPE(&cgd->inq_data) != T_OPTICAL)
1187                         break;
1188
1189                 /*
1190                  * Allocate a peripheral instance for
1191                  * this device and start the probe
1192                  * process.
1193                  */
1194                 status = cam_periph_alloc(daregister, daoninvalidate,
1195                                           dacleanup, dastart,
1196                                           "da", CAM_PERIPH_BIO,
1197                                           cgd->ccb_h.path, daasync,
1198                                           AC_FOUND_DEVICE, cgd);
1199
1200                 if (status != CAM_REQ_CMP
1201                  && status != CAM_REQ_INPROG)
1202                         printf("daasync: Unable to attach to new device "
1203                                 "due to status 0x%x\n", status);
1204                 break;
1205         }
1206         case AC_SENT_BDR:
1207         case AC_BUS_RESET:
1208         {
1209                 struct da_softc *softc;
1210                 struct ccb_hdr *ccbh;
1211                 int s;
1212
1213                 softc = (struct da_softc *)periph->softc;
1214                 s = splsoftcam();
1215                 /*
1216                  * Don't fail on the expected unit attention
1217                  * that will occur.
1218                  */
1219                 softc->flags |= DA_FLAG_RETRY_UA;
1220                 for (ccbh = LIST_FIRST(&softc->pending_ccbs);
1221                      ccbh != NULL; ccbh = LIST_NEXT(ccbh, periph_links.le))
1222                         ccbh->ccb_state |= DA_CCB_RETRY_UA;
1223                 splx(s);
1224                 /* FALLTHROUGH*/
1225         }
1226         default:
1227                 cam_periph_async(periph, code, path, arg);
1228                 break;
1229         }
1230 }
1231
1232 static cam_status
1233 daregister(struct cam_periph *periph, void *arg)
1234 {
1235         int s;
1236         struct da_softc *softc;
1237         struct ccb_setasync csa;
1238         struct ccb_getdev *cgd;
1239         caddr_t match;
1240
1241         cgd = (struct ccb_getdev *)arg;
1242         if (periph == NULL) {
1243                 printf("daregister: periph was NULL!!\n");
1244                 return(CAM_REQ_CMP_ERR);
1245         }
1246
1247         if (cgd == NULL) {
1248                 printf("daregister: no getdev CCB, can't register device\n");
1249                 return(CAM_REQ_CMP_ERR);
1250         }
1251
1252         softc = (struct da_softc *)malloc(sizeof(*softc),M_DEVBUF,M_NOWAIT);
1253
1254         if (softc == NULL) {
1255                 printf("daregister: Unable to probe new device. "
1256                        "Unable to allocate softc\n");
1257                 return(CAM_REQ_CMP_ERR);
1258         }
1259
1260         bzero(softc, sizeof(*softc));
1261         LIST_INIT(&softc->pending_ccbs);
1262         softc->state = DA_STATE_PROBE;
1263         bufq_init(&softc->buf_queue);
1264         if (SID_IS_REMOVABLE(&cgd->inq_data))
1265                 softc->flags |= DA_FLAG_PACK_REMOVABLE;
1266         if ((cgd->inq_data.flags & SID_CmdQue) != 0)
1267                 softc->flags |= DA_FLAG_TAGGED_QUEUING;
1268
1269         periph->softc = softc;
1270
1271         cam_extend_set(daperiphs, periph->unit_number, periph);
1272
1273         /*
1274          * See if this device has any quirks.
1275          */
1276         match = cam_quirkmatch((caddr_t)&cgd->inq_data,
1277                                (caddr_t)da_quirk_table,
1278                                sizeof(da_quirk_table)/sizeof(*da_quirk_table),
1279                                sizeof(*da_quirk_table), scsi_inquiry_match);
1280
1281         if (match != NULL)
1282                 softc->quirks = ((struct da_quirk_entry *)match)->quirks;
1283         else
1284                 softc->quirks = DA_Q_NONE;
1285
1286         if (softc->quirks & DA_Q_NO_6_BYTE || SID_TYPE(&cgd->inq_data) == T_RBC)
1287                 softc->minimum_cmd_size = 10;
1288         else
1289                 softc->minimum_cmd_size = 6;
1290
1291         /*
1292          * Block our timeout handler while we
1293          * add this softc to the dev list.
1294          */
1295         s = splsoftclock();
1296         SLIST_INSERT_HEAD(&softc_list, softc, links);
1297         splx(s);
1298
1299         /*
1300          * The DA driver supports a blocksize, but
1301          * we don't know the blocksize until we do
1302          * a read capacity.  So, set a flag to
1303          * indicate that the blocksize is
1304          * unavailable right now.  We'll clear the
1305          * flag as soon as we've done a read capacity.
1306          */
1307         devstat_add_entry(&softc->device_stats, "da",
1308                           periph->unit_number, 0,
1309                           DEVSTAT_BS_UNAVAILABLE,
1310                           SID_TYPE(&cgd->inq_data) | DEVSTAT_TYPE_IF_SCSI,
1311                           DEVSTAT_PRIORITY_DISK);
1312
1313         /*
1314          * Register this media as a disk
1315          */
1316         disk_create(periph->unit_number, &softc->disk, 0, &da_cdevsw);
1317
1318         /*
1319          * Add async callbacks for bus reset and
1320          * bus device reset calls.  I don't bother
1321          * checking if this fails as, in most cases,
1322          * the system will function just fine without
1323          * them and the only alternative would be to
1324          * not attach the device on failure.
1325          */
1326         xpt_setup_ccb(&csa.ccb_h, periph->path, /*priority*/5);
1327         csa.ccb_h.func_code = XPT_SASYNC_CB;
1328         csa.event_enable = AC_SENT_BDR | AC_BUS_RESET | AC_LOST_DEVICE;
1329         csa.callback = daasync;
1330         csa.callback_arg = periph;
1331         xpt_action((union ccb *)&csa);
1332         /*
1333          * Lock this peripheral until we are setup.
1334          * This first call can't block
1335          */
1336         (void)cam_periph_lock(periph, 0);
1337         xpt_schedule(periph, /*priority*/5);
1338
1339         return(CAM_REQ_CMP);
1340 }
1341
1342 static void
1343 dastart(struct cam_periph *periph, union ccb *start_ccb)
1344 {
1345         struct da_softc *softc;
1346
1347         softc = (struct da_softc *)periph->softc;
1348
1349
1350         switch (softc->state) {
1351         case DA_STATE_NORMAL:
1352         {
1353                 /* Pull a buffer from the queue and get going on it */
1354                 struct buf *bp;
1355                 int s;
1356
1357                 /*
1358                  * See if there is a buf with work for us to do..
1359                  */
1360                 s = splbio();
1361                 bp = bufq_first(&softc->buf_queue);
1362                 if (periph->immediate_priority <= periph->pinfo.priority) {
1363                         CAM_DEBUG_PRINT(CAM_DEBUG_SUBTRACE,
1364                                         ("queuing for immediate ccb\n"));
1365                         start_ccb->ccb_h.ccb_state = DA_CCB_WAITING;
1366                         SLIST_INSERT_HEAD(&periph->ccb_list, &start_ccb->ccb_h,
1367                                           periph_links.sle);
1368                         periph->immediate_priority = CAM_PRIORITY_NONE;
1369                         splx(s);
1370                         wakeup(&periph->ccb_list);
1371                 } else if (bp == NULL) {
1372                         splx(s);
1373                         xpt_release_ccb(start_ccb);
1374                 } else {
1375                         int oldspl;
1376                         u_int8_t tag_code;
1377
1378                         bufq_remove(&softc->buf_queue, bp);
1379
1380                         devstat_start_transaction(&softc->device_stats);
1381
1382                         if ((bp->b_flags & B_ORDERED) != 0
1383                          || (softc->flags & DA_FLAG_NEED_OTAG) != 0) {
1384                                 softc->flags &= ~DA_FLAG_NEED_OTAG;
1385                                 softc->ordered_tag_count++;
1386                                 tag_code = MSG_ORDERED_Q_TAG;
1387                         } else {
1388                                 tag_code = MSG_SIMPLE_Q_TAG;
1389                         }
1390                         if (da_no_6_byte && softc->minimum_cmd_size == 6)
1391                                 softc->minimum_cmd_size = 10;
1392                         scsi_read_write(&start_ccb->csio,
1393                                         /*retries*/da_retry_count,
1394                                         dadone,
1395                                         tag_code,
1396                                         bp->b_flags & B_READ,
1397                                         /*byte2*/0,
1398                                         softc->minimum_cmd_size,
1399                                         bp->b_pblkno,
1400                                         bp->b_bcount / softc->params.secsize,
1401                                         bp->b_data,
1402                                         bp->b_bcount,
1403                                         /*sense_len*/SSD_FULL_SIZE,
1404                                         da_default_timeout * 1000);
1405                         start_ccb->ccb_h.ccb_state = DA_CCB_BUFFER_IO;
1406
1407                         /*
1408                          * Block out any asyncronous callbacks
1409                          * while we touch the pending ccb list.
1410                          */
1411                         oldspl = splcam();
1412                         LIST_INSERT_HEAD(&softc->pending_ccbs,
1413                                          &start_ccb->ccb_h, periph_links.le);
1414                         splx(oldspl);
1415
1416                         /* We expect a unit attention from this device */
1417                         if ((softc->flags & DA_FLAG_RETRY_UA) != 0) {
1418                                 start_ccb->ccb_h.ccb_state |= DA_CCB_RETRY_UA;
1419                                 softc->flags &= ~DA_FLAG_RETRY_UA;
1420                         }
1421
1422                         start_ccb->ccb_h.ccb_bp = bp;
1423                         bp = bufq_first(&softc->buf_queue);
1424                         splx(s);
1425
1426                         xpt_action(start_ccb);
1427                 }
1428
1429                 if (bp != NULL) {
1430                         /* Have more work to do, so ensure we stay scheduled */
1431                         xpt_schedule(periph, /* XXX priority */1);
1432                 }
1433                 break;
1434         }
1435         case DA_STATE_PROBE:
1436         {
1437                 struct ccb_scsiio *csio;
1438                 struct scsi_read_capacity_data *rcap;
1439
1440                 rcap = (struct scsi_read_capacity_data *)malloc(sizeof(*rcap),
1441                                                                 M_TEMP,
1442                                                                 M_NOWAIT);
1443                 if (rcap == NULL) {
1444                         printf("dastart: Couldn't malloc read_capacity data\n");
1445                         /* da_free_periph??? */
1446                         break;
1447                 }
1448                 csio = &start_ccb->csio;
1449                 scsi_read_capacity(csio,
1450                                    /*retries*/4,
1451                                    dadone,
1452                                    MSG_SIMPLE_Q_TAG,
1453                                    rcap,
1454                                    SSD_FULL_SIZE,
1455                                    /*timeout*/5000);
1456                 start_ccb->ccb_h.ccb_bp = NULL;
1457                 start_ccb->ccb_h.ccb_state = DA_CCB_PROBE;
1458                 xpt_action(start_ccb);
1459                 break;
1460         }
1461         }
1462 }
1463
1464 static int
1465 cmd6workaround(union ccb *ccb)
1466 {
1467         struct scsi_rw_6 cmd6;
1468         struct scsi_rw_10 *cmd10;
1469         struct da_softc *softc;
1470         u_int8_t *cdb;
1471         int frozen;
1472
1473         cdb = ccb->csio.cdb_io.cdb_bytes;
1474
1475         /* Translation only possible if CDB is an array and cmd is R/W6 */
1476         if ((ccb->ccb_h.flags & CAM_CDB_POINTER) != 0 ||
1477             (*cdb != READ_6 && *cdb != WRITE_6))
1478                 return 0;
1479
1480         xpt_print_path(ccb->ccb_h.path);
1481         printf("READ(6)/WRITE(6) not supported, "
1482                "increasing minimum_cmd_size to 10.\n");
1483         softc = (struct da_softc *)xpt_path_periph(ccb->ccb_h.path)->softc;
1484         softc->minimum_cmd_size = 10;
1485
1486         bcopy(cdb, &cmd6, sizeof(struct scsi_rw_6));
1487         cmd10 = (struct scsi_rw_10 *)cdb;
1488         cmd10->opcode = (cmd6.opcode == READ_6) ? READ_10 : WRITE_10;
1489         cmd10->byte2 = 0;
1490         scsi_ulto4b(scsi_3btoul(cmd6.addr), cmd10->addr);
1491         cmd10->reserved = 0;
1492         scsi_ulto2b(cmd6.length, cmd10->length);
1493         cmd10->control = cmd6.control;
1494         ccb->csio.cdb_len = sizeof(*cmd10);
1495
1496         /* Requeue request, unfreezing queue if necessary */
1497         frozen = (ccb->ccb_h.status & CAM_DEV_QFRZN) != 0;
1498         ccb->ccb_h.status = CAM_REQUEUE_REQ;
1499         xpt_action(ccb);
1500         if (frozen) {
1501                 cam_release_devq(ccb->ccb_h.path,
1502                                  /*relsim_flags*/0,
1503                                  /*reduction*/0,
1504                                  /*timeout*/0,
1505                                  /*getcount_only*/0);
1506         }
1507         return (ERESTART);
1508 }
1509
1510 static void
1511 dadone(struct cam_periph *periph, union ccb *done_ccb)
1512 {
1513         struct da_softc *softc;
1514         struct ccb_scsiio *csio;
1515
1516         softc = (struct da_softc *)periph->softc;
1517         csio = &done_ccb->csio;
1518         switch (csio->ccb_h.ccb_state & DA_CCB_TYPE_MASK) {
1519         case DA_CCB_BUFFER_IO:
1520         {
1521                 struct buf *bp;
1522                 int    oldspl;
1523
1524                 bp = (struct buf *)done_ccb->ccb_h.ccb_bp;
1525                 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1526                         int error;
1527                         int s;
1528                         int sf;
1529
1530                         if ((csio->ccb_h.ccb_state & DA_CCB_RETRY_UA) != 0)
1531                                 sf = SF_RETRY_UA;
1532                         else
1533                                 sf = 0;
1534
1535                         /* Retry selection timeouts */
1536                         sf |= SF_RETRY_SELTO;
1537
1538                         if ((error = daerror(done_ccb, 0, sf)) == ERESTART) {
1539                                 /*
1540                                  * A retry was scheuled, so
1541                                  * just return.
1542                                  */
1543                                 return;
1544                         }
1545                         if (error != 0) {
1546                                 struct buf *q_bp;
1547
1548                                 s = splbio();
1549
1550                                 if (error == ENXIO) {
1551                                         /*
1552                                          * Catastrophic error.  Mark our pack as
1553                                          * invalid.
1554                                          */
1555                                         /* XXX See if this is really a media
1556                                          *     change first.
1557                                          */
1558                                         xpt_print_path(periph->path);
1559                                         printf("Invalidating pack\n");
1560                                         softc->flags |= DA_FLAG_PACK_INVALID;
1561                                 }
1562
1563                                 /*
1564                                  * return all queued I/O with EIO, so that
1565                                  * the client can retry these I/Os in the
1566                                  * proper order should it attempt to recover.
1567                                  */
1568                                 while ((q_bp = bufq_first(&softc->buf_queue))
1569                                         != NULL) {
1570                                         bufq_remove(&softc->buf_queue, q_bp);
1571                                         q_bp->b_resid = q_bp->b_bcount;
1572                                         q_bp->b_error = EIO;
1573                                         q_bp->b_flags |= B_ERROR;
1574                                         biodone(q_bp);
1575                                 }
1576                                 splx(s);
1577                                 bp->b_error = error;
1578                                 bp->b_resid = bp->b_bcount;
1579                                 bp->b_flags |= B_ERROR;
1580                         } else {
1581                                 bp->b_resid = csio->resid;
1582                                 bp->b_error = 0;
1583                                 if (bp->b_resid != 0) {
1584                                         /* Short transfer ??? */
1585 #if 0
1586                                         if (cmd6workaround(done_ccb)
1587                                                                 == ERESTART)
1588                                                 return;
1589 #endif
1590                                         bp->b_flags |= B_ERROR;
1591                                 }
1592                         }
1593                         if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
1594                                 cam_release_devq(done_ccb->ccb_h.path,
1595                                                  /*relsim_flags*/0,
1596                                                  /*reduction*/0,
1597                                                  /*timeout*/0,
1598                                                  /*getcount_only*/0);
1599                 } else {
1600                         bp->b_resid = csio->resid;
1601                         if (csio->resid > 0) {
1602                                 /* Short transfer ??? */
1603 #if 0 /* XXX most of the broken umass devices need this ad-hoc work around */
1604                                 if (cmd6workaround(done_ccb) == ERESTART)
1605                                         return;
1606 #endif
1607                                 bp->b_flags |= B_ERROR;
1608                         }
1609                 }
1610
1611                 /*
1612                  * Block out any asyncronous callbacks
1613                  * while we touch the pending ccb list.
1614                  */
1615                 oldspl = splcam();
1616                 LIST_REMOVE(&done_ccb->ccb_h, periph_links.le);
1617                 splx(oldspl);
1618
1619                 if (softc->device_stats.busy_count == 0)
1620                         softc->flags |= DA_FLAG_WENT_IDLE;
1621
1622                 devstat_end_transaction_buf(&softc->device_stats, bp);
1623                 biodone(bp);
1624                 break;
1625         }
1626         case DA_CCB_PROBE:
1627         {
1628                 struct     scsi_read_capacity_data *rdcap;
1629                 char       announce_buf[80];
1630
1631                 rdcap = (struct scsi_read_capacity_data *)csio->data_ptr;
1632
1633                 if ((csio->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP) {
1634                         struct disk_params *dp;
1635
1636                         dasetgeom(periph, rdcap);
1637                         dp = &softc->params;
1638                         snprintf(announce_buf, sizeof(announce_buf),
1639                                 "%luMB (%u %u byte sectors: %dH %dS/T %dC)",
1640                                 (unsigned long) (((u_int64_t)dp->secsize *
1641                                 dp->sectors) / (1024*1024)), dp->sectors,
1642                                 dp->secsize, dp->heads, dp->secs_per_track,
1643                                 dp->cylinders);
1644                 } else {
1645                         int     error;
1646
1647                         announce_buf[0] = '\0';
1648
1649                         /*
1650                          * Retry any UNIT ATTENTION type errors.  They
1651                          * are expected at boot.
1652                          */
1653                         error = daerror(done_ccb, 0, SF_RETRY_UA |
1654                                         SF_RETRY_SELTO | SF_NO_PRINT);
1655                         if (error == ERESTART) {
1656                                 /*
1657                                  * A retry was scheuled, so
1658                                  * just return.
1659                                  */
1660                                 return;
1661                         } else if (error != 0) {
1662                                 struct scsi_sense_data *sense;
1663                                 int asc, ascq;
1664                                 int sense_key, error_code;
1665                                 int have_sense;
1666                                 cam_status status;
1667                                 struct ccb_getdev cgd;
1668
1669                                 /* Don't wedge this device's queue */
1670                                 cam_release_devq(done_ccb->ccb_h.path,
1671                                                  /*relsim_flags*/0,
1672                                                  /*reduction*/0,
1673                                                  /*timeout*/0,
1674                                                  /*getcount_only*/0);
1675
1676                                 status = done_ccb->ccb_h.status;
1677
1678                                 xpt_setup_ccb(&cgd.ccb_h,
1679                                               done_ccb->ccb_h.path,
1680                                               /* priority */ 1);
1681                                 cgd.ccb_h.func_code = XPT_GDEV_TYPE;
1682                                 xpt_action((union ccb *)&cgd);
1683
1684                                 if (((csio->ccb_h.flags & CAM_SENSE_PHYS) != 0)
1685                                  || ((csio->ccb_h.flags & CAM_SENSE_PTR) != 0)
1686                                  || ((status & CAM_AUTOSNS_VALID) == 0))
1687                                         have_sense = FALSE;
1688                                 else
1689                                         have_sense = TRUE;
1690
1691                                 if (have_sense) {
1692                                         sense = &csio->sense_data;
1693                                         scsi_extract_sense(sense, &error_code,
1694                                                            &sense_key,
1695                                                            &asc, &ascq);
1696                                 }
1697                                 /*
1698                                  * Attach to anything that claims to be a
1699                                  * direct access or optical disk device,
1700                                  * as long as it doesn't return a "Logical
1701                                  * unit not supported" (0x25) error.
1702                                  */
1703                                 if ((have_sense) && (asc != 0x25)
1704                                  && (error_code == SSD_CURRENT_ERROR))
1705                                         snprintf(announce_buf,
1706                                             sizeof(announce_buf),
1707                                                 "Attempt to query device "
1708                                                 "size failed: %s, %s",
1709                                                 scsi_sense_key_text[sense_key],
1710                                                 scsi_sense_desc(asc,ascq,
1711                                                                 &cgd.inq_data));
1712                                 else {
1713                                         if (have_sense)
1714                                                 scsi_sense_print(
1715                                                         &done_ccb->csio);
1716                                         else {
1717                                                 xpt_print_path(periph->path);
1718                                                 printf("got CAM status %#x\n",
1719                                                        done_ccb->ccb_h.status);
1720                                         }
1721
1722                                         xpt_print_path(periph->path);
1723                                         printf("fatal error, failed"
1724                                                " to attach to device\n");
1725
1726                                         /*
1727                                          * Free up resources.
1728                                          */
1729                                         cam_periph_invalidate(periph);
1730                                 }
1731                         }
1732                 }
1733                 free(rdcap, M_TEMP);
1734                 if (announce_buf[0] != '\0')
1735                         xpt_announce_periph(periph, announce_buf);
1736                 softc->state = DA_STATE_NORMAL;
1737                 /*
1738                  * Since our peripheral may be invalidated by an error
1739                  * above or an external event, we must release our CCB
1740                  * before releasing the probe lock on the peripheral.
1741                  * The peripheral will only go away once the last lock
1742                  * is removed, and we need it around for the CCB release
1743                  * operation.
1744                  */
1745                 xpt_release_ccb(done_ccb);
1746                 cam_periph_unlock(periph);
1747                 return;
1748         }
1749         case DA_CCB_WAITING:
1750         {
1751                 /* Caller will release the CCB */
1752                 wakeup(&done_ccb->ccb_h.cbfcnp);
1753                 return;
1754         }
1755         case DA_CCB_DUMP:
1756                 /* No-op.  We're polling */
1757                 return;
1758         default:
1759                 break;
1760         }
1761         xpt_release_ccb(done_ccb);
1762 }
1763
1764 static int
1765 daerror(union ccb *ccb, u_int32_t cam_flags, u_int32_t sense_flags)
1766 {
1767         struct da_softc   *softc;
1768         struct cam_periph *periph;
1769         int error, sense_key, error_code, asc, ascq;
1770
1771         periph = xpt_path_periph(ccb->ccb_h.path);
1772         softc = (struct da_softc *)periph->softc;
1773
1774         /*
1775          * Automatically detect devices that do not support
1776          * READ(6)/WRITE(6) and upgrade to using 10 byte cdbs.
1777          */
1778         error = 0;
1779         if ((ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_SCSI_STATUS_ERROR
1780           && ccb->csio.scsi_status == SCSI_STATUS_CHECK_COND) {
1781                 scsi_extract_sense(&ccb->csio.sense_data,
1782                                    &error_code, &sense_key, &asc, &ascq);
1783                 if (sense_key == SSD_KEY_ILLEGAL_REQUEST)
1784                         error = cmd6workaround(ccb);
1785         }
1786         if (error == ERESTART)
1787                 return (ERESTART);
1788
1789         /*
1790          * XXX
1791          * Until we have a better way of doing pack validation,
1792          * don't treat UAs as errors.
1793          */
1794         sense_flags |= SF_RETRY_UA;
1795         return(cam_periph_error(ccb, cam_flags, sense_flags,
1796                                 &softc->saved_ccb));
1797 }
1798
1799 static void
1800 daprevent(struct cam_periph *periph, int action)
1801 {
1802         struct  da_softc *softc;
1803         union   ccb *ccb;
1804         int     error;
1805
1806         softc = (struct da_softc *)periph->softc;
1807
1808         if (((action == PR_ALLOW)
1809           && (softc->flags & DA_FLAG_PACK_LOCKED) == 0)
1810          || ((action == PR_PREVENT)
1811           && (softc->flags & DA_FLAG_PACK_LOCKED) != 0)) {
1812                 return;
1813         }
1814
1815         ccb = cam_periph_getccb(periph, /*priority*/1);
1816
1817         scsi_prevent(&ccb->csio,
1818                      /*retries*/1,
1819                      /*cbcfp*/dadone,
1820                      MSG_SIMPLE_Q_TAG,
1821                      action,
1822                      SSD_FULL_SIZE,
1823                      5000);
1824
1825         error = cam_periph_runccb(ccb, /*error_routine*/NULL, /*cam_flags*/0,
1826                                   /*sense_flags*/0, &softc->device_stats);
1827
1828         if (error == 0) {
1829                 if (action == PR_ALLOW)
1830                         softc->flags &= ~DA_FLAG_PACK_LOCKED;
1831                 else
1832                         softc->flags |= DA_FLAG_PACK_LOCKED;
1833         }
1834
1835         xpt_release_ccb(ccb);
1836 }
1837
1838 static void
1839 dasetgeom(struct cam_periph *periph, struct scsi_read_capacity_data * rdcap)
1840 {
1841         struct ccb_calc_geometry ccg;
1842         struct da_softc *softc;
1843         struct disk_params *dp;
1844
1845         softc = (struct da_softc *)periph->softc;
1846
1847         dp = &softc->params;
1848         dp->secsize = scsi_4btoul(rdcap->length);
1849         dp->sectors = scsi_4btoul(rdcap->addr) + 1;
1850         /*
1851          * Have the controller provide us with a geometry
1852          * for this disk.  The only time the geometry
1853          * matters is when we boot and the controller
1854          * is the only one knowledgeable enough to come
1855          * up with something that will make this a bootable
1856          * device.
1857          */
1858         xpt_setup_ccb(&ccg.ccb_h, periph->path, /*priority*/1);
1859         ccg.ccb_h.func_code = XPT_CALC_GEOMETRY;
1860         ccg.block_size = dp->secsize;
1861         ccg.volume_size = dp->sectors;
1862         ccg.heads = 0;
1863         ccg.secs_per_track = 0;
1864         ccg.cylinders = 0;
1865         xpt_action((union ccb*)&ccg);
1866         dp->heads = ccg.heads;
1867         dp->secs_per_track = ccg.secs_per_track;
1868         dp->cylinders = ccg.cylinders;
1869 }
1870
1871 static void
1872 dasendorderedtag(void *arg)
1873 {
1874         struct da_softc *softc;
1875         int s;
1876
1877         for (softc = SLIST_FIRST(&softc_list);
1878              softc != NULL;
1879              softc = SLIST_NEXT(softc, links)) {
1880                 s = splsoftcam();
1881                 if ((softc->ordered_tag_count == 0)
1882                  && ((softc->flags & DA_FLAG_WENT_IDLE) == 0)) {
1883                         softc->flags |= DA_FLAG_NEED_OTAG;
1884                 }
1885                 if (softc->device_stats.busy_count > 0)
1886                         softc->flags &= ~DA_FLAG_WENT_IDLE;
1887
1888                 softc->ordered_tag_count = 0;
1889                 splx(s);
1890         }
1891         /* Queue us up again */
1892         timeout(dasendorderedtag, NULL,
1893                 (da_default_timeout * hz) / DA_ORDEREDTAG_INTERVAL);
1894 }
1895
1896 /*
1897  * Step through all DA peripheral drivers, and if the device is still open,
1898  * sync the disk cache to physical media.
1899  */
1900 static void
1901 dashutdown(void * arg, int howto)
1902 {
1903         struct cam_periph *periph;
1904         struct da_softc *softc;
1905
1906         for (periph = TAILQ_FIRST(&dadriver.units); periph != NULL;
1907              periph = TAILQ_NEXT(periph, unit_links)) {
1908                 union ccb ccb;
1909                 softc = (struct da_softc *)periph->softc;
1910
1911                 /*
1912                  * We only sync the cache if the drive is still open, and
1913                  * if the drive is capable of it..
1914                  */
1915                 if (((softc->flags & DA_FLAG_OPEN) == 0)
1916                  || (softc->quirks & DA_Q_NO_SYNC_CACHE))
1917                         continue;
1918
1919                 xpt_setup_ccb(&ccb.ccb_h, periph->path, /*priority*/1);
1920
1921                 ccb.ccb_h.ccb_state = DA_CCB_DUMP;
1922                 scsi_synchronize_cache(&ccb.csio,
1923                                        /*retries*/1,
1924                                        /*cbfcnp*/dadone,
1925                                        MSG_SIMPLE_Q_TAG,
1926                                        /*begin_lba*/0, /* whole disk */
1927                                        /*lb_count*/0,
1928                                        SSD_FULL_SIZE,
1929                                        5 * 60 * 1000);
1930
1931                 xpt_polled_action(&ccb);
1932
1933                 if ((ccb.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1934                         if (((ccb.ccb_h.status & CAM_STATUS_MASK) ==
1935                              CAM_SCSI_STATUS_ERROR)
1936                          && (ccb.csio.scsi_status == SCSI_STATUS_CHECK_COND)){
1937                                 int error_code, sense_key, asc, ascq;
1938
1939                                 scsi_extract_sense(&ccb.csio.sense_data,
1940                                                    &error_code, &sense_key,
1941                                                    &asc, &ascq);
1942
1943                                 if (sense_key != SSD_KEY_ILLEGAL_REQUEST)
1944                                         scsi_sense_print(&ccb.csio);
1945                         } else {
1946                                 xpt_print_path(periph->path);
1947                                 printf("Synchronize cache failed, status "
1948                                        "== 0x%x, scsi status == 0x%x\n",
1949                                        ccb.ccb_h.status, ccb.csio.scsi_status);
1950                         }
1951                 }
1952
1953                 if ((ccb.ccb_h.status & CAM_DEV_QFRZN) != 0)
1954                         cam_release_devq(ccb.ccb_h.path,
1955                                          /*relsim_flags*/0,
1956                                          /*reduction*/0,
1957                                          /*timeout*/0,
1958                                          /*getcount_only*/0);
1959
1960         }
1961 }
1962
1963 #else /* !_KERNEL */
1964
1965 /*
1966  * XXX This is only left out of the kernel build to silence warnings.  If,
1967  * for some reason this function is used in the kernel, the ifdefs should
1968  * be moved so it is included both in the kernel and userland.
1969  */
1970 void
1971 scsi_format_unit(struct ccb_scsiio *csio, u_int32_t retries,
1972                  void (*cbfcnp)(struct cam_periph *, union ccb *),
1973                  u_int8_t tag_action, u_int8_t byte2, u_int16_t ileave,
1974                  u_int8_t *data_ptr, u_int32_t dxfer_len, u_int8_t sense_len,
1975                  u_int32_t timeout)
1976 {
1977         struct scsi_format_unit *scsi_cmd;
1978
1979         scsi_cmd = (struct scsi_format_unit *)&csio->cdb_io.cdb_bytes;
1980         scsi_cmd->opcode = FORMAT_UNIT;
1981         scsi_cmd->byte2 = byte2;
1982         scsi_ulto2b(ileave, scsi_cmd->interleave);
1983
1984         cam_fill_csio(csio,
1985                       retries,
1986                       cbfcnp,
1987                       /*flags*/ (dxfer_len > 0) ? CAM_DIR_OUT : CAM_DIR_NONE,
1988                       tag_action,
1989                       data_ptr,
1990                       dxfer_len,
1991                       sense_len,
1992                       sizeof(*scsi_cmd),
1993                       timeout);
1994 }
1995
1996 #endif /* _KERNEL */