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 1.42.2.46 2003/10/21 22:18:19 thomas Exp $
  29  * $DragonFly: src/sys/bus/cam/scsi/scsi_da.c,v 1.43 2007/11/18 17:53:01 pavalos 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 #include <sys/taskqueue.h>
  45 #endif /* _KERNEL */
  46
  47 #include <sys/devicestat.h>
  48 #include <sys/conf.h>
  49 #ifdef _KERNEL
  50 #include <sys/disk.h>
  51 #include <sys/dtype.h>
  52 #include <sys/eventhandler.h>
  53 #include <sys/malloc.h>
  54 #include <sys/cons.h>
  55 #include <sys/proc.h>
  56 #endif
  57 #include <sys/buf2.h>
  58 #ifdef _KERNEL
  59 #include <sys/thread2.h>
  60 #endif
  61
  62 #include <machine/md_var.h>
  63
  64 #ifdef _KERNEL
  65 #include <vm/vm.h>
  66 #include <vm/pmap.h>
  67 #endif
  68
  69 #ifndef _KERNEL
  70 #include <stdio.h>
  71 #include <string.h>
  72 #endif /* _KERNEL */
  73
  74 #include "../cam.h"
  75 #include "../cam_ccb.h"
  76 #include "../cam_extend.h"
  77 #include "../cam_periph.h"
  78 #include "../cam_xpt_periph.h"
  79
  80 #include "scsi_message.h"
  81
  82 #ifndef _KERNEL
  83 #include "scsi_da.h"
  84 #endif /* !_KERNEL */
  85
  86 #ifdef _KERNEL
  87 typedef enum {
  88         DA_STATE_PROBE,
  89         DA_STATE_PROBE2,
  90         DA_STATE_NORMAL
  91 } da_state;
  92
  93 typedef enum {
  94         DA_FLAG_PACK_INVALID    = 0x001,
  95         DA_FLAG_NEW_PACK        = 0x002,
  96         DA_FLAG_PACK_LOCKED     = 0x004,
  97         DA_FLAG_PACK_REMOVABLE  = 0x008,
  98         DA_FLAG_TAGGED_QUEUING  = 0x010,
  99         DA_FLAG_NEED_OTAG       = 0x020,
 100         DA_FLAG_WENT_IDLE       = 0x040,
 101         DA_FLAG_RETRY_UA        = 0x080,
 102         DA_FLAG_OPEN            = 0x100,
 103         DA_FLAG_SCTX_INIT       = 0x200
 104 } da_flags;
 105
 106 typedef enum {
 107         DA_Q_NONE               = 0x00,
 108         DA_Q_NO_SYNC_CACHE      = 0x01,
 109         DA_Q_NO_6_BYTE          = 0x02,
 110         DA_Q_NO_PREVENT         = 0x04
 111 } da_quirks;
 112
 113 typedef enum {
 114         DA_CCB_PROBE            = 0x01,
 115         DA_CCB_PROBE2           = 0x02,
 116         DA_CCB_BUFFER_IO        = 0x03,
 117         DA_CCB_WAITING          = 0x04,
 118         DA_CCB_DUMP             = 0x05,
 119         DA_CCB_TYPE_MASK        = 0x0F,
 120         DA_CCB_RETRY_UA         = 0x10
 121 } da_ccb_state;
 122
 123 /* Offsets into our private area for storing information */
 124 #define ccb_state       ppriv_field0
 125 #define ccb_bio         ppriv_ptr1
 126
 127 struct disk_params {
 128         u_int8_t  heads;
 129         u_int32_t cylinders;
 130         u_int8_t  secs_per_track;
 131         u_int32_t secsize;      /* Number of bytes/sector */
 132         u_int64_t sectors;      /* total number sectors */
 133 };
 134
 135 struct da_softc {
 136         struct   bio_queue_head bio_queue;
 137         struct   devstat device_stats;
 138         SLIST_ENTRY(da_softc) links;
 139         LIST_HEAD(, ccb_hdr) pending_ccbs;
 140         da_state state;
 141         da_flags flags;
 142         da_quirks quirks;
 143         int      minimum_cmd_size;
 144         int      ordered_tag_count;
 145         struct   disk_params params;
 146         struct   disk disk;
 147         union    ccb saved_ccb;
 148         struct task             sysctl_task;
 149         struct sysctl_ctx_list  sysctl_ctx;
 150         struct sysctl_oid       *sysctl_tree;
 151 };
 152
 153 struct da_quirk_entry {
 154         struct scsi_inquiry_pattern inq_pat;
 155         da_quirks quirks;
 156 };
 157
 158 static const char quantum[] = "QUANTUM";
 159 static const char microp[] = "MICROP";
 160
 161 static struct da_quirk_entry da_quirk_table[] =
 162 {
 163         /* SPI, FC devices */
 164         {
 165                 /*
 166                  * Fujitsu M2513A MO drives.
 167                  * Tested devices: M2513A2 firmware versions 1200 & 1300.
 168                  * (dip switch selects whether T_DIRECT or T_OPTICAL device)
 169                  * Reported by: W.Scholten <whs@xs4all.nl>
 170                  */
 171                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "FUJITSU", "M2513A", "*"},
 172                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 173         },
 174         {
 175                 /* See above. */
 176                 {T_OPTICAL, SIP_MEDIA_REMOVABLE, "FUJITSU", "M2513A", "*"},
 177                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 178         },
 179         {
 180                 /*
 181                  * This particular Fujitsu drive doesn't like the
 182                  * synchronize cache command.
 183                  * Reported by: Tom Jackson <toj@gorilla.net>
 184                  */
 185                 {T_DIRECT, SIP_MEDIA_FIXED, "FUJITSU", "M2954*", "*"},
 186                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 187
 188         },
 189         {
 190                 /*
 191                  * This drive doesn't like the synchronize cache command
 192                  * either.  Reported by: Matthew Jacob <mjacob@feral.com>
 193                  * in NetBSD PR kern/6027, August 24, 1998.
 194                  */
 195                 {T_DIRECT, SIP_MEDIA_FIXED, microp, "2217*", "*"},
 196                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 197         },
 198         {
 199                 /*
 200                  * This drive doesn't like the synchronize cache command
 201                  * either.  Reported by: Hellmuth Michaelis (hm@kts.org)
 202                  * (PR 8882).
 203                  */
 204                 {T_DIRECT, SIP_MEDIA_FIXED, microp, "2112*", "*"},
 205                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 206         },
 207         {
 208                 /*
 209                  * Doesn't like the synchronize cache command.
 210                  * Reported by: Blaz Zupan <blaz@gold.amis.net>
 211                  */
 212                 {T_DIRECT, SIP_MEDIA_FIXED, "NEC", "D3847*", "*"},
 213                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 214         },
 215         {
 216                 /*
 217                  * Doesn't like the synchronize cache command.
 218                  */
 219                 {T_DIRECT, SIP_MEDIA_FIXED, quantum, "MAVERICK 540S", "*"},
 220                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 221         },
 222         {
 223                 /*
 224                  * Doesn't like the synchronize cache command.
 225                  */
 226                 {T_DIRECT, SIP_MEDIA_FIXED, quantum, "LPS525S", "*"},
 227                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 228         },
 229         {
 230                 /*
 231                  * Doesn't work correctly with 6 byte reads/writes.
 232                  * Returns illegal request, and points to byte 9 of the
 233                  * 6-byte CDB.
 234                  * Reported by:  Adam McDougall <bsdx@spawnet.com>
 235                  */
 236                 {T_DIRECT, SIP_MEDIA_FIXED, quantum, "VIKING 4*", "*"},
 237                 /*quirks*/ DA_Q_NO_6_BYTE
 238         },
 239         {
 240                 /* See above. */
 241                 {T_DIRECT, SIP_MEDIA_FIXED, quantum, "VIKING 2*", "*"},
 242                 /*quirks*/ DA_Q_NO_6_BYTE
 243         },
 244         /* XXX USB floppy quirks temporarily enabled for 4.9R */
 245         /* USB floppy devices supported by umass(4) */
 246         {
 247                 /*
 248                  * This USB floppy drive uses the UFI command set. This
 249                  * command set is a derivative of the ATAPI command set and
 250                  * does not support READ_6 commands only READ_10. It also does
 251                  * not support sync cache (0x35).
 252                  */
 253                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Y-E DATA", "USB-FDU", "*"},
 254                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 255         },
 256         {
 257                 /* Another USB floppy */
 258                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "MATSHITA", "FDD CF-VFDU*","*"},
 259                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 260         },
 261         {
 262                 /*
 263                  * The vendor, product and version strings coming from the
 264                  * controller are null terminated instead of being padded with
 265                  * spaces. The trailing wildcard character '*' is required.
 266                  */
 267                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "SMSC*", "USB FDC*","*"},
 268                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 269         },
 270         {
 271                 /*
 272                  * SmartDisk (Mitsumi) USB floppy drive
 273                  * PR: kern/50226
 274                  */
 275                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "MITSUMI", "USB FDD", "*"},
 276                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 277         },
 278         {
 279                 /*
 280                  * The CISS RAID controllers do not support SYNC_CACHE
 281                  */
 282                 {T_DIRECT, SIP_MEDIA_FIXED, "COMPAQ", "RAID*", "*"},
 283                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 284         },
 285 #ifdef DA_OLD_QUIRKS
 286         /* USB mass storage devices supported by umass(4) */
 287         {
 288                 /*
 289                  * Sony Memory Stick adapter MSAC-US1 and
 290                  * Sony PCG-C1VJ Internal Memory Stick Slot (MSC-U01).
 291                  * Make all sony MS* products use this quirk.
 292                  */
 293                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Sony", "MS*", "*"},
 294                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 295         },
 296         {
 297                 /*
 298                  * Sony Memory Stick adapter for the CLIE series
 299                  * of PalmOS PDA's
 300                  */
 301                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Sony", "CLIE*", "*"},
 302                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 303         },
 304         {
 305                 /*
 306                  * Intelligent Stick USB disk-on-key
 307                  * PR: kern/53005
 308                  */
 309                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "USB Card",
 310                  "IntelligentStick*", "*"},
 311                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 312         },
 313         {
 314                 /*
 315                  * Sony DSC cameras (DSC-S30, DSC-S50, DSC-S70)
 316                  */
 317                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Sony", "Sony DSC", "*"},
 318                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 319         },
 320         {
 321                 /*
 322                  * Microtech USB CameraMate
 323                  */
 324                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "eUSB    Compact*",
 325                  "Compact Flash*", "*"},
 326                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 327         },
 328         {
 329                 /*
 330                  * Olympus digital cameras (C-3040ZOOM, C-2040ZOOM, C-1)
 331                  */
 332                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "OLYMPUS", "C-*", "*"},
 333                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 334         },
 335         {
 336                 /*
 337                  * Olympus digital cameras (E-100RS, E-10).
 338                  */
 339                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "OLYMPUS", "E-*", "*"},
 340                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 341         },
 342         {
 343                 /*
 344                  * KingByte Pen Drives
 345                  */
 346                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "NO BRAND", "PEN DRIVE", "*"},
 347                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 348         },
 349         {
 350                 /*
 351                  * iRiver iFP MP3 player (with UMS Firmware)
 352                  * PR: kern/54881, i386/63941, kern/66124
 353                  */
 354                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "iRiver", "iFP*", "*"},
 355                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 356         },
 357         {
 358                 /*
 359                  * Frontier Labs NEX IA+ Digital Audio Player, rev 1.10/0.01
 360                  * PR: kern/70158
 361                  */
 362                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "FL" , "NexIA+*", "*"},
 363                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 364         },
 365         {
 366                 /*
 367                  * FujiFilm Camera
 368                  */
 369                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "FUJIFILMUSB-DRIVEUNIT",
 370                  "USB-DRIVEUNIT", "*"},
 371                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 372         },
 373         {
 374                 /*
 375                  * Minolta Dimage E203
 376                  */
 377                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "MINOLTA", "DiMAGE E203", "*"},
 378                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 379         },
 380         {
 381                 /*
 382                  * Apacer HandyDrive
 383                  * PR: kern/43627
 384                  */
 385                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Apacer", "HandyDrive", "*"},
 386                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 387         },
 388         {
 389                 /*
 390                  * Daisy Technology PhotoClip on Zoran chip
 391                  * PR: kern/43580
 392                  */
 393                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "ZORAN", "COACH", "*"},
 394                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 395         },
 396         {
 397                 /*
 398                  * Sony USB Key-Storage
 399                  * PR: kern/46386
 400                  */
 401                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Sony", "Storage Media", "*"},
 402                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 403         },
 404 #endif /* DA_OLD_QUIRKS */
 405         {
 406                 /*
 407                  * EXATELECOM (Sigmatel) i-Bead 100/105 USB Flash MP3 Player
 408                  * PR: kern/51675
 409                  */
 410                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "EXATEL", "i-BEAD10*", "*"},
 411                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 412         },
 413         {
 414                 /*
 415                  * Jungsoft NEXDISK USB flash key
 416                  * PR: kern/54737
 417                  */
 418                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "JUNGSOFT", "NEXDISK*", "*"},
 419                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 420         },
 421         {
 422                 /*
 423                  * Creative Nomad MUVO mp3 player (USB)
 424                  * PR: kern/53094
 425                  */
 426                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "CREATIVE", "NOMAD_MUVO", "*"},
 427                 /*quirks*/ DA_Q_NO_SYNC_CACHE|DA_Q_NO_PREVENT
 428         },
 429 };
 430
 431 static  d_open_t        daopen;
 432 static  d_close_t       daclose;
 433 static  d_strategy_t    dastrategy;
 434 static  d_ioctl_t       daioctl;
 435 static  d_dump_t        dadump;
 436 static  periph_init_t   dainit;
 437 static  void            daasync(void *callback_arg, u_int32_t code,
 438                                 struct cam_path *path, void *arg);
 439 static  int             dacmdsizesysctl(SYSCTL_HANDLER_ARGS);
 440 static  periph_ctor_t   daregister;
 441 static  periph_dtor_t   dacleanup;
 442 static  periph_start_t  dastart;
 443 static  periph_oninv_t  daoninvalidate;
 444 static  void            dadone(struct cam_periph *periph,
 445                                union ccb *done_ccb);
 446 static  int             daerror(union ccb *ccb, u_int32_t cam_flags,
 447                                 u_int32_t sense_flags);
 448 static void             daprevent(struct cam_periph *periph, int action);
 449 static int              dagetcapacity(struct cam_periph *periph);
 450 static void             dasetgeom(struct cam_periph *periph, uint32_t block_len,
 451                                   uint64_t maxsector);
 452
 453 static timeout_t        dasendorderedtag;
 454 static void             dashutdown(void *arg, int howto);
 455
 456 #ifndef DA_DEFAULT_TIMEOUT
 457 #define DA_DEFAULT_TIMEOUT 60   /* Timeout in seconds */
 458 #endif
 459
 460 #ifndef DA_DEFAULT_RETRY
 461 #define DA_DEFAULT_RETRY        4
 462 #endif
 463
 464 static int da_retry_count = DA_DEFAULT_RETRY;
 465 static int da_default_timeout = DA_DEFAULT_TIMEOUT;
 466 static struct callout dasendorderedtag_ch;
 467
 468 SYSCTL_NODE(_kern_cam, OID_AUTO, da, CTLFLAG_RD, 0,
 469             "CAM Direct Access Disk driver");
 470 SYSCTL_INT(_kern_cam_da, OID_AUTO, retry_count, CTLFLAG_RW,
 471            &da_retry_count, 0, "Normal I/O retry count");
 472 TUNABLE_INT("kern.cam.da.retry_count", &da_retry_count);
 473 SYSCTL_INT(_kern_cam_da, OID_AUTO, default_timeout, CTLFLAG_RW,
 474            &da_default_timeout, 0, "Normal I/O timeout (in seconds)");
 475 TUNABLE_INT("kern.cam.da.default_timeout", &da_default_timeout);
 476
 477 /*
 478  * DA_ORDEREDTAG_INTERVAL determines how often, relative
 479  * to the default timeout, we check to see whether an ordered
 480  * tagged transaction is appropriate to prevent simple tag
 481  * starvation.  Since we'd like to ensure that there is at least
 482  * 1/2 of the timeout length left for a starved transaction to
 483  * complete after we've sent an ordered tag, we must poll at least
 484  * four times in every timeout period.  This takes care of the worst
 485  * case where a starved transaction starts during an interval that
 486  * meets the requirement "don't send an ordered tag" test so it takes
 487  * us two intervals to determine that a tag must be sent.
 488  */
 489 #ifndef DA_ORDEREDTAG_INTERVAL
 490 #define DA_ORDEREDTAG_INTERVAL 4
 491 #endif
 492
 493 static struct periph_driver dadriver =
 494 {
 495         dainit, "da",
 496         TAILQ_HEAD_INITIALIZER(dadriver.units), /* generation */ 0
 497 };
 498
 499 PERIPHDRIVER_DECLARE(da, dadriver);
 500
 501 /* For 2.2-stable support */
 502 #ifndef D_DISK
 503 #define D_DISK 0
 504 #endif
 505
 506 static struct dev_ops da_ops = {
 507         { "da", DA_CDEV_MAJOR, D_DISK },
 508         .d_open =       daopen,
 509         .d_close =      daclose,
 510         .d_read =       physread,
 511         .d_write =      physwrite,
 512         .d_ioctl =      daioctl,
 513         .d_strategy =   dastrategy,
 514         .d_dump =       dadump
 515 };
 516
 517 static SLIST_HEAD(,da_softc) softc_list;
 518 static struct extend_array *daperiphs;
 519
 520 static int
 521 daopen(struct dev_open_args *ap)
 522 {
 523         cdev_t dev = ap->a_head.a_dev;
 524         struct cam_periph *periph;
 525         struct da_softc *softc;
 526         struct disk_info info;
 527         int unit;
 528         int part;
 529         int error;
 530
 531         unit = dkunit(dev);
 532         part = dkpart(dev);
 533         crit_enter();
 534         periph = cam_extend_get(daperiphs, unit);
 535         if (periph == NULL) {
 536                 crit_exit();
 537                 return (ENXIO);
 538         }
 539
 540         softc = (struct da_softc *)periph->softc;
 541
 542         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE,
 543             ("daopen: dev=%s (unit %d , partition %d)\n", devtoname(dev),
 544              unit, part));
 545
 546         if ((error = cam_periph_lock(periph, PCATCH)) != 0) {
 547                 crit_exit();
 548                 return (error); /* error code from tsleep */
 549         }
 550
 551         if ((softc->flags & DA_FLAG_OPEN) == 0) {
 552                 if (cam_periph_acquire(periph) != CAM_REQ_CMP) {
 553                         crit_exit();
 554                         return(ENXIO);
 555                 }
 556                 softc->flags |= DA_FLAG_OPEN;
 557         }
 558
 559         if ((softc->flags & DA_FLAG_PACK_INVALID) != 0) {
 560                 /* Invalidate our pack information. */
 561                 disk_invalidate(&softc->disk);
 562                 softc->flags &= ~DA_FLAG_PACK_INVALID;
 563         }
 564         crit_exit();
 565
 566         error = dagetcapacity(periph);
 567
 568 #if 0
 569         /* Do a read capacity */
 570         {
 571                 struct scsi_read_capacity_data *rcap;
 572                 union  ccb *ccb;
 573
 574                 rcap = kmalloc(sizeof(*rcap), M_TEMP, M_INTWAIT | M_ZERO);
 575
 576                 ccb = cam_periph_getccb(periph, /*priority*/1);
 577                 scsi_read_capacity(&ccb->csio,
 578                                    /*retries*/1,
 579                                    /*cbfncp*/dadone,
 580                                    MSG_SIMPLE_Q_TAG,
 581                                    rcap,
 582                                    SSD_FULL_SIZE,
 583                                    /*timeout*/60000);
 584                 ccb->ccb_h.ccb_bio = NULL;
 585
 586                 error = cam_periph_runccb(ccb, daerror, /*cam_flags*/0,
 587                                           /*sense_flags*/SF_RETRY_UA |
 588                                                          SF_RETRY_SELTO,
 589                                           &softc->device_stats);
 590
 591                 xpt_release_ccb(ccb);
 592
 593                 if (error == 0) {
 594                         dasetgeom(periph, rcap);
 595                 }
 596
 597                 kfree(rcap, M_TEMP);
 598         }
 599 #endif
 600
 601         if (error == 0) {
 602                 struct ccb_getdev cgd;
 603
 604                 /* Build disk information structure */
 605                 bzero(&info, sizeof(info));
 606                 info.d_type = DTYPE_SCSI;
 607
 608                 /*
 609                  * Grab the inquiry data to get the vendor and product names.
 610                  * Put them in the typename and packname for the label.
 611                  */
 612                 xpt_setup_ccb(&cgd.ccb_h, periph->path, /*priority*/ 1);
 613                 cgd.ccb_h.func_code = XPT_GDEV_TYPE;
 614                 xpt_action((union ccb *)&cgd);
 615
 616 #if 0
 617                 strncpy(label->d_typename, cgd.inq_data.vendor,
 618                         min(SID_VENDOR_SIZE, sizeof(label->d_typename)));
 619                 strncpy(label->d_packname, cgd.inq_data.product,
 620                         min(SID_PRODUCT_SIZE, sizeof(label->d_packname)));
 621 #endif
 622
 623                 /*
 624                  * Mandatory fields
 625                  */
 626                 info.d_media_blksize = softc->params.secsize;
 627                 info.d_media_blocks = softc->params.sectors;
 628                 info.d_media_size = 0;
 629
 630                 /*
 631                  * Optional fields
 632                  */
 633                 info.d_secpertrack = softc->params.secs_per_track;
 634                 info.d_nheads = softc->params.heads;
 635                 info.d_ncylinders = softc->params.cylinders;
 636                 info.d_secpercyl = softc->params.heads *
 637                                    softc->params.secs_per_track;
 638                 disk_setdiskinfo(&softc->disk, &info);
 639
 640                 /*
 641                  * Check to see whether or not the blocksize is set yet.
 642                  * If it isn't, set it and then clear the blocksize
 643                  * unavailable flag for the device statistics.
 644                  */
 645                 if ((softc->device_stats.flags & DEVSTAT_BS_UNAVAILABLE) != 0){
 646                         softc->device_stats.block_size = softc->params.secsize;
 647                         softc->device_stats.flags &= ~DEVSTAT_BS_UNAVAILABLE;
 648                 }
 649         }
 650
 651         if (error == 0) {
 652                 if ((softc->flags & DA_FLAG_PACK_REMOVABLE) != 0 &&
 653                     (softc->quirks & DA_Q_NO_PREVENT) == 0)
 654                         daprevent(periph, PR_PREVENT);
 655         } else {
 656                 softc->flags &= ~DA_FLAG_OPEN;
 657                 cam_periph_release(periph);
 658         }
 659         cam_periph_unlock(periph);
 660         return (error);
 661 }
 662
 663 static int
 664 daclose(struct dev_close_args *ap)
 665 {
 666         cdev_t dev = ap->a_head.a_dev;
 667         struct  cam_periph *periph;
 668         struct  da_softc *softc;
 669         int     unit;
 670         int     error;
 671
 672         unit = dkunit(dev);
 673         periph = cam_extend_get(daperiphs, unit);
 674         if (periph == NULL)
 675                 return (ENXIO);
 676
 677         softc = (struct da_softc *)periph->softc;
 678
 679         if ((error = cam_periph_lock(periph, 0)) != 0) {
 680                 return (error); /* error code from tsleep */
 681         }
 682
 683         if ((softc->quirks & DA_Q_NO_SYNC_CACHE) == 0) {
 684                 union   ccb *ccb;
 685
 686                 ccb = cam_periph_getccb(periph, /*priority*/1);
 687
 688                 scsi_synchronize_cache(&ccb->csio,
 689                                        /*retries*/1,
 690                                        /*cbfcnp*/dadone,
 691                                        MSG_SIMPLE_Q_TAG,
 692                                        /*begin_lba*/0,/* Cover the whole disk */
 693                                        /*lb_count*/0,
 694                                        SSD_FULL_SIZE,
 695                                        5 * 60 * 1000);
 696
 697                 cam_periph_runccb(ccb, /*error_routine*/NULL, /*cam_flags*/0,
 698                                   /*sense_flags*/SF_RETRY_UA,
 699                                   &softc->device_stats);
 700
 701                 if ((ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
 702                         if ((ccb->ccb_h.status & CAM_STATUS_MASK) ==
 703                              CAM_SCSI_STATUS_ERROR) {
 704                                 int asc, ascq;
 705                                 int sense_key, error_code;
 706
 707                                 scsi_extract_sense(&ccb->csio.sense_data,
 708                                                    &error_code,
 709                                                    &sense_key,
 710                                                    &asc, &ascq);
 711                                 if (sense_key != SSD_KEY_ILLEGAL_REQUEST)
 712                                         scsi_sense_print(&ccb->csio);
 713                         } else {
 714                                 xpt_print_path(periph->path);
 715                                 kprintf("Synchronize cache failed, status "
 716                                        "== 0x%x, scsi status == 0x%x\n",
 717                                        ccb->csio.ccb_h.status,
 718                                        ccb->csio.scsi_status);
 719                         }
 720                 }
 721
 722                 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
 723                         cam_release_devq(ccb->ccb_h.path,
 724                                          /*relsim_flags*/0,
 725                                          /*reduction*/0,
 726                                          /*timeout*/0,
 727                                          /*getcount_only*/0);
 728
 729                 xpt_release_ccb(ccb);
 730
 731         }
 732
 733         if ((softc->flags & DA_FLAG_PACK_REMOVABLE) != 0) {
 734                 if ((softc->quirks & DA_Q_NO_PREVENT) == 0)
 735                         daprevent(periph, PR_ALLOW);
 736                 /*
 737                  * If we've got removeable media, mark the blocksize as
 738                  * unavailable, since it could change when new media is
 739                  * inserted.
 740                  */
 741                 softc->device_stats.flags |= DEVSTAT_BS_UNAVAILABLE;
 742         }
 743
 744         /*
 745          * Don't compound any ref counting software bugs with more.
 746          */
 747         if (softc->flags & DA_FLAG_OPEN) {
 748                 softc->flags &= ~DA_FLAG_OPEN;
 749                 cam_periph_release(periph);
 750         } else {
 751                 xpt_print_path(periph->path);
 752                 kprintf("daclose() called on an already closed device!\n");
 753         }
 754         cam_periph_unlock(periph);
 755         return (0);
 756 }
 757
 758 /*
 759  * Actually translate the requested transfer into one the physical driver
 760  * can understand.  The transfer is described by a buf and will include
 761  * only one physical transfer.
 762  */
 763 static int
 764 dastrategy(struct dev_strategy_args *ap)
 765 {
 766         cdev_t dev = ap->a_head.a_dev;
 767         struct bio *bio = ap->a_bio;
 768         struct buf *bp = bio->bio_buf;
 769         struct cam_periph *periph;
 770         struct da_softc *softc;
 771         u_int  unit;
 772         u_int  part;
 773
 774         unit = dkunit(dev);
 775         part = dkpart(dev);
 776         periph = cam_extend_get(daperiphs, unit);
 777         if (periph == NULL) {
 778                 bp->b_error = ENXIO;
 779                 goto bad;
 780         }
 781         softc = (struct da_softc *)periph->softc;
 782 #if 0
 783         /*
 784          * check it's not too big a transfer for our adapter
 785          */
 786         scsi_minphys(bp, &sd_switch);
 787 #endif
 788
 789         /*
 790          * Mask interrupts so that the pack cannot be invalidated until
 791          * after we are in the queue.  Otherwise, we might not properly
 792          * clean up one of the buffers.
 793          */
 794         crit_enter();
 795
 796         /*
 797          * If the device has been made invalid, error out
 798          */
 799         if ((softc->flags & DA_FLAG_PACK_INVALID)) {
 800                 crit_exit();
 801                 bp->b_error = ENXIO;
 802                 goto bad;
 803         }
 804
 805         /*
 806          * Place it in the queue of disk activities for this disk
 807          */
 808         bioqdisksort(&softc->bio_queue, bio);
 809
 810         crit_exit();
 811
 812         /*
 813          * Schedule ourselves for performing the work.
 814          */
 815         xpt_schedule(periph, /* XXX priority */1);
 816
 817         return(0);
 818 bad:
 819         bp->b_flags |= B_ERROR;
 820
 821         /*
 822          * Correctly set the buf to indicate a completed xfer
 823          */
 824         bp->b_resid = bp->b_bcount;
 825         biodone(bio);
 826         return(0);
 827 }
 828
 829 /* For 2.2-stable support */
 830 #ifndef ENOIOCTL
 831 #define ENOIOCTL -1
 832 #endif
 833
 834 static int
 835 daioctl(struct dev_ioctl_args *ap)
 836 {
 837         cdev_t dev = ap->a_head.a_dev;
 838         struct cam_periph *periph;
 839         struct da_softc *softc;
 840         int unit;
 841         int error;
 842
 843         unit = dkunit(dev);
 844         periph = cam_extend_get(daperiphs, unit);
 845         if (periph == NULL)
 846                 return (ENXIO);
 847
 848         softc = (struct da_softc *)periph->softc;
 849
 850         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("daioctl\n"));
 851
 852         if ((error = cam_periph_lock(periph, PCATCH)) != 0) {
 853                 return (error); /* error code from tsleep */
 854         }
 855
 856         error = cam_periph_ioctl(periph, ap->a_cmd, ap->a_data, daerror);
 857
 858         cam_periph_unlock(periph);
 859
 860         return (error);
 861 }
 862
 863 static int
 864 dadump(struct dev_dump_args *ap)
 865 {
 866         cdev_t dev = ap->a_head.a_dev;
 867         struct      cam_periph *periph;
 868         struct      da_softc *softc;
 869         u_int       unit;
 870         long        blkcnt;
 871         vm_paddr_t  addr;
 872         struct      ccb_scsiio csio;
 873         int         dumppages = MAXDUMPPGS;
 874         int         i;
 875
 876         /* toss any characters present prior to dump */
 877         while (cncheckc() != -1)
 878                 ;
 879
 880         unit = dkunit(dev);
 881         periph = cam_extend_get(daperiphs, unit);
 882         if (periph == NULL) {
 883                 return (ENXIO);
 884         }
 885         softc = (struct da_softc *)periph->softc;
 886
 887         if ((softc->flags & DA_FLAG_PACK_INVALID) != 0)
 888                 return (ENXIO);
 889
 890         addr = 0;       /* starting address */
 891         blkcnt = howmany(PAGE_SIZE, ap->a_secsize);
 892
 893         while (ap->a_count > 0) {
 894                 caddr_t va = NULL;
 895
 896                 if ((ap->a_count / blkcnt) < dumppages)
 897                         dumppages = ap->a_count / blkcnt;
 898
 899                 for (i = 0; i < dumppages; ++i) {
 900                         vm_paddr_t a = addr + (i * PAGE_SIZE);
 901                         if (is_physical_memory(a))
 902                                 va = pmap_kenter_temporary(trunc_page(a), i);
 903                         else
 904                                 va = pmap_kenter_temporary(trunc_page(0), i);
 905                 }
 906
 907                 xpt_setup_ccb(&csio.ccb_h, periph->path, /*priority*/1);
 908                 csio.ccb_h.ccb_state = DA_CCB_DUMP;
 909                 scsi_read_write(&csio,
 910                                 /*retries*/1,
 911                                 dadone,
 912                                 MSG_ORDERED_Q_TAG,
 913                                 /*read*/FALSE,
 914                                 /*byte2*/0,
 915                                 /*minimum_cmd_size*/ softc->minimum_cmd_size,
 916                                 ap->a_blkno,
 917                                 blkcnt * dumppages,
 918                                 /*data_ptr*/(u_int8_t *) va,
 919                                 /*dxfer_len*/blkcnt * ap->a_secsize * dumppages,
 920                                 /*sense_len*/SSD_FULL_SIZE,
 921                                 DA_DEFAULT_TIMEOUT * 1000);
 922                 xpt_polled_action((union ccb *)&csio);
 923
 924                 if ((csio.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
 925                         kprintf("Aborting dump due to I/O error.\n");
 926                         if ((csio.ccb_h.status & CAM_STATUS_MASK) ==
 927                              CAM_SCSI_STATUS_ERROR)
 928                                 scsi_sense_print(&csio);
 929                         else
 930                                 kprintf("status == 0x%x, scsi status == 0x%x\n",
 931                                        csio.ccb_h.status, csio.scsi_status);
 932                         return(EIO);
 933                 }
 934
 935                 if (dumpstatus(addr, (off_t)ap->a_count * softc->params.secsize) < 0)
 936                         return (EINTR);
 937
 938                 /* update block count */
 939                 ap->a_count -= blkcnt * dumppages;
 940                 ap->a_blkno += blkcnt * dumppages;
 941                 addr += PAGE_SIZE * dumppages;
 942         }
 943
 944         /*
 945          * Sync the disk cache contents to the physical media.
 946          */
 947         if ((softc->quirks & DA_Q_NO_SYNC_CACHE) == 0) {
 948
 949                 xpt_setup_ccb(&csio.ccb_h, periph->path, /*priority*/1);
 950                 csio.ccb_h.ccb_state = DA_CCB_DUMP;
 951                 scsi_synchronize_cache(&csio,
 952                                        /*retries*/1,
 953                                        /*cbfcnp*/dadone,
 954                                        MSG_SIMPLE_Q_TAG,
 955                                        /*begin_lba*/0,/* Cover the whole disk */
 956                                        /*lb_count*/0,
 957                                        SSD_FULL_SIZE,
 958                                        5 * 60 * 1000);
 959                 xpt_polled_action((union ccb *)&csio);
 960
 961                 if ((csio.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
 962                         if ((csio.ccb_h.status & CAM_STATUS_MASK) ==
 963                              CAM_SCSI_STATUS_ERROR) {
 964                                 int asc, ascq;
 965                                 int sense_key, error_code;
 966
 967                                 scsi_extract_sense(&csio.sense_data,
 968                                                    &error_code,
 969                                                    &sense_key,
 970                                                    &asc, &ascq);
 971                                 if (sense_key != SSD_KEY_ILLEGAL_REQUEST)
 972                                         scsi_sense_print(&csio);
 973                         } else {
 974                                 xpt_print_path(periph->path);
 975                                 kprintf("Synchronize cache failed, status "
 976                                        "== 0x%x, scsi status == 0x%x\n",
 977                                        csio.ccb_h.status, csio.scsi_status);
 978                         }
 979                 }
 980         }
 981         return (0);
 982 }
 983
 984 static void
 985 dainit(void)
 986 {
 987         cam_status status;
 988         struct cam_path *path;
 989
 990         /*
 991          * Create our extend array for storing the devices we attach to.
 992          */
 993         daperiphs = cam_extend_new();
 994         SLIST_INIT(&softc_list);
 995         if (daperiphs == NULL) {
 996                 kprintf("da: Failed to alloc extend array!\n");
 997                 return;
 998         }
 999
1000         callout_init(&dasendorderedtag_ch);
1001
1002         /*
1003          * Install a global async callback.  This callback will
1004          * receive async callbacks like "new device found".
1005          */
1006         status = xpt_create_path(&path, /*periph*/NULL, CAM_XPT_PATH_ID,
1007                                  CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD);
1008
1009         if (status == CAM_REQ_CMP) {
1010                 struct ccb_setasync csa;
1011
1012                 xpt_setup_ccb(&csa.ccb_h, path, /*priority*/5);
1013                 csa.ccb_h.func_code = XPT_SASYNC_CB;
1014                 csa.event_enable = AC_FOUND_DEVICE;
1015                 csa.callback = daasync;
1016                 csa.callback_arg = NULL;
1017                 xpt_action((union ccb *)&csa);
1018                 status = csa.ccb_h.status;
1019                 xpt_free_path(path);
1020         }
1021
1022         if (status != CAM_REQ_CMP) {
1023                 kprintf("da: Failed to attach master async callback "
1024                        "due to status 0x%x!\n", status);
1025         } else {
1026
1027                 /*
1028                  * Schedule a periodic event to occasionally send an
1029                  * ordered tag to a device.
1030                  */
1031                 callout_reset(&dasendorderedtag_ch,
1032                     (DA_DEFAULT_TIMEOUT * hz) / DA_ORDEREDTAG_INTERVAL,
1033                     dasendorderedtag, NULL);
1034
1035                 /* Register our shutdown event handler */
1036                 if ((EVENTHANDLER_REGISTER(shutdown_post_sync, dashutdown,
1037                                            NULL, SHUTDOWN_PRI_DEFAULT)) == NULL)
1038                     kprintf("dainit: shutdown event registration failed!\n");
1039         }
1040 }
1041
1042 static void
1043 daoninvalidate(struct cam_periph *periph)
1044 {
1045         struct da_softc *softc;
1046         struct bio *q_bio;
1047         struct buf *q_bp;
1048         struct ccb_setasync csa;
1049
1050         softc = (struct da_softc *)periph->softc;
1051
1052         /*
1053          * De-register any async callbacks.
1054          */
1055         xpt_setup_ccb(&csa.ccb_h, periph->path,
1056                       /* priority */ 5);
1057         csa.ccb_h.func_code = XPT_SASYNC_CB;
1058         csa.event_enable = 0;
1059         csa.callback = daasync;
1060         csa.callback_arg = periph;
1061         xpt_action((union ccb *)&csa);
1062
1063         softc->flags |= DA_FLAG_PACK_INVALID;
1064
1065         /*
1066          * Use a critical section to keep the buffer queue from being
1067          * modified while we traverse it.
1068          */
1069         crit_enter();
1070
1071         /*
1072          * Return all queued I/O with ENXIO.
1073          * XXX Handle any transactions queued to the card
1074          *     with XPT_ABORT_CCB.
1075          */
1076         while ((q_bio = bioq_first(&softc->bio_queue)) != NULL){
1077                 bioq_remove(&softc->bio_queue, q_bio);
1078                 q_bp = q_bio->bio_buf;
1079                 q_bp->b_resid = q_bp->b_bcount;
1080                 q_bp->b_error = ENXIO;
1081                 q_bp->b_flags |= B_ERROR;
1082                 biodone(q_bio);
1083         }
1084         crit_exit();
1085
1086         SLIST_REMOVE(&softc_list, softc, da_softc, links);
1087
1088         xpt_print_path(periph->path);
1089         kprintf("lost device\n");
1090 }
1091
1092 static void
1093 dacleanup(struct cam_periph *periph)
1094 {
1095         struct da_softc *softc;
1096
1097         softc = (struct da_softc *)periph->softc;
1098
1099         devstat_remove_entry(&softc->device_stats);
1100         cam_extend_release(daperiphs, periph->unit_number);
1101         xpt_print_path(periph->path);
1102         kprintf("removing device entry\n");
1103         /*
1104          * If we can't free the sysctl tree, oh well...
1105          */
1106         if ((softc->flags & DA_FLAG_SCTX_INIT) != 0
1107             && sysctl_ctx_free(&softc->sysctl_ctx) != 0) {
1108                 xpt_print_path(periph->path);
1109                 kprintf("can't remove sysctl context\n");
1110         }
1111         if (softc->disk.d_rawdev) {
1112                 disk_destroy(&softc->disk);
1113         }
1114         kfree(softc, M_DEVBUF);
1115 }
1116
1117 static void
1118 daasync(void *callback_arg, u_int32_t code,
1119         struct cam_path *path, void *arg)
1120 {
1121         struct cam_periph *periph;
1122
1123         periph = (struct cam_periph *)callback_arg;
1124         switch (code) {
1125         case AC_FOUND_DEVICE:
1126         {
1127                 struct ccb_getdev *cgd;
1128                 cam_status status;
1129
1130                 cgd = (struct ccb_getdev *)arg;
1131
1132                 if (SID_TYPE(&cgd->inq_data) != T_DIRECT
1133                     && SID_TYPE(&cgd->inq_data) != T_RBC
1134                     && SID_TYPE(&cgd->inq_data) != T_OPTICAL)
1135                         break;
1136
1137                 /*
1138                  * Allocate a peripheral instance for
1139                  * this device and start the probe
1140                  * process.
1141                  */
1142                 status = cam_periph_alloc(daregister, daoninvalidate,
1143                                           dacleanup, dastart,
1144                                           "da", CAM_PERIPH_BIO,
1145                                           cgd->ccb_h.path, daasync,
1146                                           AC_FOUND_DEVICE, cgd);
1147
1148                 if (status != CAM_REQ_CMP
1149                  && status != CAM_REQ_INPROG)
1150                         kprintf("daasync: Unable to attach to new device "
1151                                 "due to status 0x%x\n", status);
1152                 break;
1153         }
1154         case AC_SENT_BDR:
1155         case AC_BUS_RESET:
1156         {
1157                 struct da_softc *softc;
1158                 struct ccb_hdr *ccbh;
1159
1160                 softc = (struct da_softc *)periph->softc;
1161                 crit_enter();
1162                 /*
1163                  * Don't fail on the expected unit attention
1164                  * that will occur.
1165                  */
1166                 softc->flags |= DA_FLAG_RETRY_UA;
1167                 LIST_FOREACH(ccbh, &softc->pending_ccbs, periph_links.le)
1168                         ccbh->ccb_state |= DA_CCB_RETRY_UA;
1169                 crit_exit();
1170                 /* FALLTHROUGH*/
1171         }
1172         default:
1173                 cam_periph_async(periph, code, path, arg);
1174                 break;
1175         }
1176 }
1177
1178 static void
1179 dasysctlinit(void *context, int pending)
1180 {
1181         struct cam_periph *periph;
1182         struct da_softc *softc;
1183         char tmpstr[80], tmpstr2[80];
1184
1185         periph = (struct cam_periph *)context;
1186         softc = (struct da_softc *)periph->softc;
1187
1188         ksnprintf(tmpstr, sizeof(tmpstr), "CAM DA unit %d", periph->unit_number);
1189         ksnprintf(tmpstr2, sizeof(tmpstr2), "%d", periph->unit_number);
1190
1191         sysctl_ctx_init(&softc->sysctl_ctx);
1192         softc->flags |= DA_FLAG_SCTX_INIT;
1193         softc->sysctl_tree = SYSCTL_ADD_NODE(&softc->sysctl_ctx,
1194                 SYSCTL_STATIC_CHILDREN(_kern_cam_da), OID_AUTO, tmpstr2,
1195                 CTLFLAG_RD, 0, tmpstr);
1196         if (softc->sysctl_tree == NULL) {
1197                 kprintf("dasysctlinit: unable to allocate sysctl tree\n");
1198                 return;
1199         }
1200
1201         /*
1202          * Now register the sysctl handler, so the user can the value on
1203          * the fly.
1204          */
1205         SYSCTL_ADD_PROC(&softc->sysctl_ctx,SYSCTL_CHILDREN(softc->sysctl_tree),
1206                 OID_AUTO, "minimum_cmd_size", CTLTYPE_INT | CTLFLAG_RW,
1207                 &softc->minimum_cmd_size, 0, dacmdsizesysctl, "I",
1208                 "Minimum CDB size");
1209 }
1210
1211 static int
1212 dacmdsizesysctl(SYSCTL_HANDLER_ARGS)
1213 {
1214         int error, value;
1215
1216         value = *(int *)arg1;
1217
1218         error = sysctl_handle_int(oidp, &value, 0, req);
1219
1220         if ((error != 0)
1221          || (req->newptr == NULL))
1222                 return (error);
1223
1224         /*
1225          * Acceptable values here are 6, 10 or 12, or 16.
1226          */
1227         if (value < 6)
1228                 value = 6;
1229         else if ((value > 6)
1230               && (value <= 10))
1231                 value = 10;
1232         else if ((value > 10)
1233               && (value <= 12))
1234                 value = 12;
1235         else if (value > 12)
1236                 value = 16;
1237
1238         *(int *)arg1 = value;
1239
1240         return (0);
1241 }
1242
1243 static cam_status
1244 daregister(struct cam_periph *periph, void *arg)
1245 {
1246         struct da_softc *softc;
1247         struct ccb_setasync csa;
1248         struct ccb_pathinq cpi;
1249         struct ccb_getdev *cgd;
1250         char tmpstr[80];
1251         caddr_t match;
1252
1253         cgd = (struct ccb_getdev *)arg;
1254         if (periph == NULL) {
1255                 kprintf("daregister: periph was NULL!!\n");
1256                 return(CAM_REQ_CMP_ERR);
1257         }
1258
1259         if (cgd == NULL) {
1260                 kprintf("daregister: no getdev CCB, can't register device\n");
1261                 return(CAM_REQ_CMP_ERR);
1262         }
1263
1264         softc = kmalloc(sizeof(*softc), M_DEVBUF, M_INTWAIT | M_ZERO);
1265         LIST_INIT(&softc->pending_ccbs);
1266         softc->state = DA_STATE_PROBE;
1267         bioq_init(&softc->bio_queue);
1268         if (SID_IS_REMOVABLE(&cgd->inq_data))
1269                 softc->flags |= DA_FLAG_PACK_REMOVABLE;
1270         if ((cgd->inq_data.flags & SID_CmdQue) != 0)
1271                 softc->flags |= DA_FLAG_TAGGED_QUEUING;
1272
1273         periph->softc = softc;
1274
1275         cam_extend_set(daperiphs, periph->unit_number, periph);
1276
1277         /*
1278          * See if this device has any quirks.
1279          */
1280         match = cam_quirkmatch((caddr_t)&cgd->inq_data,
1281                                (caddr_t)da_quirk_table,
1282                                sizeof(da_quirk_table)/sizeof(*da_quirk_table),
1283                                sizeof(*da_quirk_table), scsi_inquiry_match);
1284
1285         if (match != NULL)
1286                 softc->quirks = ((struct da_quirk_entry *)match)->quirks;
1287         else
1288                 softc->quirks = DA_Q_NONE;
1289
1290         TASK_INIT(&softc->sysctl_task, 0, dasysctlinit, periph);
1291
1292         /* Check if the SIM does not want 6 byte commands */
1293         xpt_setup_ccb(&cpi.ccb_h, periph->path, /*priority*/1);
1294         cpi.ccb_h.func_code = XPT_PATH_INQ;
1295         xpt_action((union ccb *)&cpi);
1296         if (cpi.ccb_h.status == CAM_REQ_CMP && (cpi.hba_misc & PIM_NO_6_BYTE))
1297                 softc->quirks |= DA_Q_NO_6_BYTE;
1298
1299         /*
1300          * RBC devices don't have to support READ(6), only READ(10).
1301          */
1302         if (softc->quirks & DA_Q_NO_6_BYTE || SID_TYPE(&cgd->inq_data) == T_RBC)
1303                 softc->minimum_cmd_size = 10;
1304         else
1305                 softc->minimum_cmd_size = 6;
1306
1307         /*
1308          * Load the user's default, if any.
1309          */
1310         ksnprintf(tmpstr, sizeof(tmpstr), "kern.cam.da.%d.minimum_cmd_size",
1311                  periph->unit_number);
1312         TUNABLE_INT_FETCH(tmpstr, &softc->minimum_cmd_size);
1313
1314         /*
1315          * 6, 10, 12, and 16 are the currently permissible values.
1316          */
1317         if (softc->minimum_cmd_size < 6)
1318                 softc->minimum_cmd_size = 6;
1319         else if ((softc->minimum_cmd_size > 6)
1320               && (softc->minimum_cmd_size <= 10))
1321                 softc->minimum_cmd_size = 10;
1322         else if ((softc->minimum_cmd_size > 10)
1323               && (softc->minimum_cmd_size <= 12))
1324                 softc->minimum_cmd_size = 12;
1325         else if (softc->minimum_cmd_size > 12)
1326                 softc->minimum_cmd_size = 16;
1327
1328         /*
1329          * Block our timeout handler while we
1330          * add this softc to the dev list.
1331          */
1332         crit_enter();
1333         SLIST_INSERT_HEAD(&softc_list, softc, links);
1334         crit_exit();
1335
1336         /*
1337          * The DA driver supports a blocksize, but
1338          * we don't know the blocksize until we do
1339          * a read capacity.  So, set a flag to
1340          * indicate that the blocksize is
1341          * unavailable right now.  We'll clear the
1342          * flag as soon as we've done a read capacity.
1343          */
1344         devstat_add_entry(&softc->device_stats, "da",
1345                           periph->unit_number, 0,
1346                           DEVSTAT_BS_UNAVAILABLE,
1347                           SID_TYPE(&cgd->inq_data) | DEVSTAT_TYPE_IF_SCSI,
1348                           DEVSTAT_PRIORITY_DISK);
1349
1350         /*
1351          * Register this media as a disk
1352          */
1353         disk_create(periph->unit_number, &softc->disk, &da_ops);
1354         softc->disk.d_rawdev->si_iosize_max = MAXPHYS;
1355
1356         /*
1357          * Add async callbacks for bus reset and
1358          * bus device reset calls.  I don't bother
1359          * checking if this fails as, in most cases,
1360          * the system will function just fine without
1361          * them and the only alternative would be to
1362          * not attach the device on failure.
1363          */
1364         xpt_setup_ccb(&csa.ccb_h, periph->path, /*priority*/5);
1365         csa.ccb_h.func_code = XPT_SASYNC_CB;
1366         csa.event_enable = AC_SENT_BDR | AC_BUS_RESET | AC_LOST_DEVICE;
1367         csa.callback = daasync;
1368         csa.callback_arg = periph;
1369         xpt_action((union ccb *)&csa);
1370         /*
1371          * Lock this peripheral until we are setup.
1372          * This first call can't block
1373          */
1374         cam_periph_lock(periph, 0);
1375         xpt_schedule(periph, /*priority*/5);
1376
1377         return(CAM_REQ_CMP);
1378 }
1379
1380 static void
1381 dastart(struct cam_periph *periph, union ccb *start_ccb)
1382 {
1383         struct da_softc *softc;
1384
1385         softc = (struct da_softc *)periph->softc;
1386
1387
1388         switch (softc->state) {
1389         case DA_STATE_NORMAL:
1390         {
1391                 /* Pull a buffer from the queue and get going on it */
1392                 struct bio *bio;
1393                 struct buf *bp;
1394
1395                 /*
1396                  * See if there is a buf with work for us to do..
1397                  */
1398                 crit_enter();
1399                 bio = bioq_first(&softc->bio_queue);
1400                 if (periph->immediate_priority <= periph->pinfo.priority) {
1401                         CAM_DEBUG_PRINT(CAM_DEBUG_SUBTRACE,
1402                                         ("queuing for immediate ccb\n"));
1403                         start_ccb->ccb_h.ccb_state = DA_CCB_WAITING;
1404                         SLIST_INSERT_HEAD(&periph->ccb_list, &start_ccb->ccb_h,
1405                                           periph_links.sle);
1406                         periph->immediate_priority = CAM_PRIORITY_NONE;
1407                         crit_exit();
1408                         wakeup(&periph->ccb_list);
1409                 } else if (bio == NULL) {
1410                         crit_exit();
1411                         xpt_release_ccb(start_ccb);
1412                 } else {
1413                         u_int8_t tag_code;
1414
1415                         bioq_remove(&softc->bio_queue, bio);
1416                         bp = bio->bio_buf;
1417
1418                         devstat_start_transaction(&softc->device_stats);
1419
1420                         if ((bp->b_flags & B_ORDERED) != 0
1421                          || (softc->flags & DA_FLAG_NEED_OTAG) != 0) {
1422                                 softc->flags &= ~DA_FLAG_NEED_OTAG;
1423                                 softc->ordered_tag_count++;
1424                                 tag_code = MSG_ORDERED_Q_TAG;
1425                         } else {
1426                                 tag_code = MSG_SIMPLE_Q_TAG;
1427                         }
1428
1429                         KKASSERT(bio->bio_offset % softc->params.secsize == 0);
1430
1431                         scsi_read_write(&start_ccb->csio,
1432                                         /*retries*/da_retry_count,
1433                                         dadone,
1434                                         tag_code,
1435                                         (bp->b_cmd == BUF_CMD_READ),
1436                                         /*byte2*/0,
1437                                         softc->minimum_cmd_size,
1438                                         bio->bio_offset / softc->params.secsize,
1439                                         bp->b_bcount / softc->params.secsize,
1440                                         bp->b_data,
1441                                         bp->b_bcount,
1442                                         /*sense_len*/SSD_FULL_SIZE,
1443                                         da_default_timeout * 1000);
1444                         start_ccb->ccb_h.ccb_state = DA_CCB_BUFFER_IO;
1445
1446                         /*
1447                          * Block out any asyncronous callbacks
1448                          * while we touch the pending ccb list.
1449                          */
1450                         LIST_INSERT_HEAD(&softc->pending_ccbs,
1451                                          &start_ccb->ccb_h, periph_links.le);
1452
1453                         /* We expect a unit attention from this device */
1454                         if ((softc->flags & DA_FLAG_RETRY_UA) != 0) {
1455                                 start_ccb->ccb_h.ccb_state |= DA_CCB_RETRY_UA;
1456                                 softc->flags &= ~DA_FLAG_RETRY_UA;
1457                         }
1458
1459                         start_ccb->ccb_h.ccb_bio = bio;
1460                         bio = bioq_first(&softc->bio_queue);
1461                         crit_exit();
1462
1463                         xpt_action(start_ccb);
1464                 }
1465
1466                 if (bio != NULL) {
1467                         /* Have more work to do, so ensure we stay scheduled */
1468                         xpt_schedule(periph, /* XXX priority */1);
1469                 }
1470                 break;
1471         }
1472         case DA_STATE_PROBE:
1473         {
1474                 struct ccb_scsiio *csio;
1475                 struct scsi_read_capacity_data *rcap;
1476
1477                 rcap = kmalloc(sizeof(*rcap), M_TEMP, M_INTWAIT | M_ZERO);
1478                 csio = &start_ccb->csio;
1479                 scsi_read_capacity(csio,
1480                                    /*retries*/4,
1481                                    dadone,
1482                                    MSG_SIMPLE_Q_TAG,
1483                                    rcap,
1484                                    SSD_FULL_SIZE,
1485                                    /*timeout*/5000);
1486                 start_ccb->ccb_h.ccb_bio = NULL;
1487                 start_ccb->ccb_h.ccb_state = DA_CCB_PROBE;
1488                 xpt_action(start_ccb);
1489                 break;
1490         }
1491         case DA_STATE_PROBE2:
1492         {
1493                 struct ccb_scsiio *csio;
1494                 struct scsi_read_capacity_data_long *rcaplong;
1495
1496                 rcaplong = (struct scsi_read_capacity_data_long *)
1497                 kmalloc(sizeof(*rcaplong), M_TEMP, M_INTWAIT);
1498                 if (rcaplong == NULL) {
1499                         kprintf("dastart: Couldn't allocate read_capacity\n");
1500                         /* da_free_periph??? */
1501                         break;
1502                 }
1503                 csio = &start_ccb->csio;
1504                 scsi_read_capacity_16(csio,
1505                                     /*retries*/ 4,
1506                                     /*cbfcnp*/ dadone,
1507                                     /*tag_action*/ MSG_SIMPLE_Q_TAG,
1508                                     /*lba*/ 0,
1509                                     /*reladr*/ 0,
1510                                     /*pmi*/ 0,
1511                                     rcaplong,
1512                                     /*sense_len*/ SSD_FULL_SIZE,
1513                                     /*timeout*/ 60000);
1514                 start_ccb->ccb_h.ccb_bio = NULL;
1515                 start_ccb->ccb_h.ccb_state = DA_CCB_PROBE2;
1516                 xpt_action(start_ccb);
1517                 break;
1518         }
1519         }
1520 }
1521
1522 static int
1523 cmd6workaround(union ccb *ccb)
1524 {
1525         struct scsi_rw_6 cmd6;
1526         struct scsi_rw_10 *cmd10;
1527         struct da_softc *softc;
1528         u_int8_t *cdb;
1529         int frozen;
1530
1531         cdb = ccb->csio.cdb_io.cdb_bytes;
1532
1533         /* Translation only possible if CDB is an array and cmd is R/W6 */
1534         if ((ccb->ccb_h.flags & CAM_CDB_POINTER) != 0 ||
1535             (*cdb != READ_6 && *cdb != WRITE_6))
1536                 return 0;
1537
1538         xpt_print_path(ccb->ccb_h.path);
1539         kprintf("READ(6)/WRITE(6) not supported, "
1540                "increasing minimum_cmd_size to 10.\n");
1541         softc = (struct da_softc *)xpt_path_periph(ccb->ccb_h.path)->softc;
1542         softc->minimum_cmd_size = 10;
1543
1544         bcopy(cdb, &cmd6, sizeof(struct scsi_rw_6));
1545         cmd10 = (struct scsi_rw_10 *)cdb;
1546         cmd10->opcode = (cmd6.opcode == READ_6) ? READ_10 : WRITE_10;
1547         cmd10->byte2 = 0;
1548         scsi_ulto4b(scsi_3btoul(cmd6.addr), cmd10->addr);
1549         cmd10->reserved = 0;
1550         scsi_ulto2b(cmd6.length, cmd10->length);
1551         cmd10->control = cmd6.control;
1552         ccb->csio.cdb_len = sizeof(*cmd10);
1553
1554         /* Requeue request, unfreezing queue if necessary */
1555         frozen = (ccb->ccb_h.status & CAM_DEV_QFRZN) != 0;
1556         ccb->ccb_h.status = CAM_REQUEUE_REQ;
1557         xpt_action(ccb);
1558         if (frozen) {
1559                 cam_release_devq(ccb->ccb_h.path,
1560                                  /*relsim_flags*/0,
1561                                  /*reduction*/0,
1562                                  /*timeout*/0,
1563                                  /*getcount_only*/0);
1564         }
1565         return (ERESTART);
1566 }
1567
1568 static void
1569 dadone(struct cam_periph *periph, union ccb *done_ccb)
1570 {
1571         struct da_softc *softc;
1572         struct ccb_scsiio *csio;
1573
1574         softc = (struct da_softc *)periph->softc;
1575         csio = &done_ccb->csio;
1576         switch (csio->ccb_h.ccb_state & DA_CCB_TYPE_MASK) {
1577         case DA_CCB_BUFFER_IO:
1578         {
1579                 struct buf *bp;
1580                 struct bio *bio;
1581
1582                 bio = (struct bio *)done_ccb->ccb_h.ccb_bio;
1583                 bp = bio->bio_buf;
1584                 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1585                         int error;
1586                         int sf;
1587
1588                         if ((csio->ccb_h.ccb_state & DA_CCB_RETRY_UA) != 0)
1589                                 sf = SF_RETRY_UA;
1590                         else
1591                                 sf = 0;
1592
1593                         error = daerror(done_ccb, CAM_RETRY_SELTO, sf);
1594                         if (error == ERESTART) {
1595                                 /*
1596                                  * A retry was scheuled, so
1597                                  * just return.
1598                                  */
1599                                 return;
1600                         }
1601                         if (error != 0) {
1602                                 struct bio *q_bio;
1603                                 struct buf *q_bp;
1604
1605                                 crit_enter();
1606
1607                                 if (error == ENXIO) {
1608                                         /*
1609                                          * Catastrophic error.  Mark our pack as
1610                                          * invalid.
1611                                          */
1612                                         /* XXX See if this is really a media
1613                                          *     change first.
1614                                          */
1615                                         xpt_print_path(periph->path);
1616                                         kprintf("Invalidating pack\n");
1617                                         softc->flags |= DA_FLAG_PACK_INVALID;
1618                                 }
1619
1620                                 /*
1621                                  * return all queued I/O with EIO, so that
1622                                  * the client can retry these I/Os in the
1623                                  * proper order should it attempt to recover.
1624                                  */
1625                                 while ((q_bio = bioq_first(&softc->bio_queue))
1626                                         != NULL) {
1627                                         bioq_remove(&softc->bio_queue, q_bio);
1628                                         q_bp = q_bio->bio_buf;
1629                                         q_bp->b_resid = q_bp->b_bcount;
1630                                         q_bp->b_error = EIO;
1631                                         q_bp->b_flags |= B_ERROR;
1632                                         biodone(q_bio);
1633                                 }
1634                                 crit_exit();
1635                                 bp->b_error = error;
1636                                 bp->b_resid = bp->b_bcount;
1637                                 bp->b_flags |= B_ERROR;
1638                         } else {
1639                                 bp->b_resid = csio->resid;
1640                                 bp->b_error = 0;
1641                                 if (bp->b_resid != 0)
1642                                         bp->b_flags |= B_ERROR;
1643                         }
1644                         if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
1645                                 cam_release_devq(done_ccb->ccb_h.path,
1646                                                  /*relsim_flags*/0,
1647                                                  /*reduction*/0,
1648                                                  /*timeout*/0,
1649                                                  /*getcount_only*/0);
1650                 } else {
1651                         if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
1652                                 panic("REQ_CMP with QFRZN");
1653                         bp->b_resid = csio->resid;
1654                         if (csio->resid > 0)
1655                                 bp->b_flags |= B_ERROR;
1656                 }
1657
1658                 /*
1659                  * Block out any asyncronous callbacks
1660                  * while we touch the pending ccb list.
1661                  */
1662                 crit_enter();
1663                 LIST_REMOVE(&done_ccb->ccb_h, periph_links.le);
1664                 crit_exit();
1665
1666                 if (softc->device_stats.busy_count == 0)
1667                         softc->flags |= DA_FLAG_WENT_IDLE;
1668
1669                 devstat_end_transaction_buf(&softc->device_stats, bp);
1670                 biodone(bio);
1671                 break;
1672         }
1673         case DA_CCB_PROBE:
1674         case DA_CCB_PROBE2:
1675         {
1676                 struct     scsi_read_capacity_data *rdcap;
1677                 struct     scsi_read_capacity_data_long *rcaplong;
1678                 char       announce_buf[80];
1679
1680                 rdcap = NULL;
1681                 rcaplong = NULL;
1682                 if (softc->state == DA_STATE_PROBE)
1683                         rdcap =(struct scsi_read_capacity_data *)csio->data_ptr;
1684                 else
1685                         rcaplong = (struct scsi_read_capacity_data_long *)
1686                                     csio->data_ptr;
1687
1688                 if ((csio->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP) {
1689                         struct disk_params *dp;
1690                         uint32_t block_size;
1691                         uint64_t maxsector;
1692
1693                         if (softc->state == DA_STATE_PROBE) {
1694                                 block_size = scsi_4btoul(rdcap->length);
1695                                 maxsector = scsi_4btoul(rdcap->addr);
1696
1697                                 /*
1698                                  * According to SBC-2, if the standard 10
1699                                  * byte READ CAPACITY command returns 2^32,
1700                                  * we should issue the 16 byte version of
1701                                  * the command, since the device in question
1702                                  * has more sectors than can be represented
1703                                  * with the short version of the command.
1704                                  */
1705                                 if (maxsector == 0xffffffff) {
1706                                         softc->state = DA_STATE_PROBE2;
1707                                         kfree(rdcap, M_TEMP);
1708                                         xpt_release_ccb(done_ccb);
1709                                         xpt_schedule(periph, /*priority*/5);
1710                                         return;
1711                                 }
1712                         } else {
1713                                 block_size = scsi_4btoul(rcaplong->length);
1714                                 maxsector = scsi_8btou64(rcaplong->addr);
1715                         }
1716                         dasetgeom(periph, block_size, maxsector);
1717                         dp = &softc->params;
1718                         ksnprintf(announce_buf, sizeof(announce_buf),
1719                                 "%juMB (%ju %u byte sectors: %dH %dS/T %dC)",
1720                                 (uintmax_t) (((uintmax_t)dp->secsize *
1721                                 dp->sectors) / (1024*1024)),
1722                                 (uintmax_t)dp->sectors,
1723                                 dp->secsize, dp->heads, dp->secs_per_track,
1724                                 dp->cylinders);
1725                 } else {
1726                         int     error;
1727
1728                         announce_buf[0] = '\0';
1729
1730                         /*
1731                          * Retry any UNIT ATTENTION type errors.  They
1732                          * are expected at boot.
1733                          */
1734                         error = daerror(done_ccb, CAM_RETRY_SELTO,
1735                                         SF_RETRY_UA|SF_NO_PRINT);
1736                         if (error == ERESTART) {
1737                                 /*
1738                                  * A retry was scheuled, so
1739                                  * just return.
1740                                  */
1741                                 return;
1742                         } else if (error != 0) {
1743                                 struct scsi_sense_data *sense;
1744                                 int asc, ascq;
1745                                 int sense_key, error_code;
1746                                 int have_sense;
1747                                 cam_status status;
1748                                 struct ccb_getdev cgd;
1749
1750                                 /* Don't wedge this device's queue */
1751                                 status = done_ccb->ccb_h.status;
1752                                 if ((status & CAM_DEV_QFRZN) != 0)
1753                                         cam_release_devq(done_ccb->ccb_h.path,
1754                                                          /*relsim_flags*/0,
1755                                                          /*reduction*/0,
1756                                                          /*timeout*/0,
1757                                                          /*getcount_only*/0);
1758
1759
1760                                 xpt_setup_ccb(&cgd.ccb_h,
1761                                               done_ccb->ccb_h.path,
1762                                               /* priority */ 1);
1763                                 cgd.ccb_h.func_code = XPT_GDEV_TYPE;
1764                                 xpt_action((union ccb *)&cgd);
1765
1766                                 if (((csio->ccb_h.flags & CAM_SENSE_PHYS) != 0)
1767                                  || ((csio->ccb_h.flags & CAM_SENSE_PTR) != 0)
1768                                  || ((status & CAM_AUTOSNS_VALID) == 0))
1769                                         have_sense = FALSE;
1770                                 else
1771                                         have_sense = TRUE;
1772
1773                                 if (have_sense) {
1774                                         sense = &csio->sense_data;
1775                                         scsi_extract_sense(sense, &error_code,
1776                                                            &sense_key,
1777                                                            &asc, &ascq);
1778                                 }
1779                                 /*
1780                                  * Attach to anything that claims to be a
1781                                  * direct access or optical disk device,
1782                                  * as long as it doesn't return a "Logical
1783                                  * unit not supported" (0x25) error.
1784                                  */
1785                                 if ((have_sense) && (asc != 0x25)
1786                                  && (error_code == SSD_CURRENT_ERROR)) {
1787                                         const char *sense_key_desc;
1788                                         const char *asc_desc;
1789
1790                                         scsi_sense_desc(sense_key, asc, ascq,
1791                                                         &cgd.inq_data,
1792                                                         &sense_key_desc,
1793                                                         &asc_desc);
1794                                         ksnprintf(announce_buf,
1795                                             sizeof(announce_buf),
1796                                                 "Attempt to query device "
1797                                                 "size failed: %s, %s",
1798                                                 sense_key_desc,
1799                                                 asc_desc);
1800                                 } else {
1801                                         if (have_sense)
1802                                                 scsi_sense_print(
1803                                                         &done_ccb->csio);
1804                                         else {
1805                                                 xpt_print_path(periph->path);
1806                                                 kprintf("got CAM status %#x\n",
1807                                                        done_ccb->ccb_h.status);
1808                                         }
1809
1810                                         xpt_print_path(periph->path);
1811                                         kprintf("fatal error, failed"
1812                                                " to attach to device\n");
1813
1814                                         /*
1815                                          * Free up resources.
1816                                          */
1817                                         cam_periph_invalidate(periph);
1818                                 }
1819                         }
1820                 }
1821                 kfree(csio->data_ptr, M_TEMP);
1822                 if (announce_buf[0] != '\0') {
1823                         xpt_announce_periph(periph, announce_buf);
1824                         /*
1825                          * Create our sysctl variables, now that we know
1826                          * we have successfully attached.
1827                          */
1828                         taskqueue_enqueue(taskqueue_thread[mycpuid],
1829                             &softc->sysctl_task);
1830                 }
1831                 softc->state = DA_STATE_NORMAL;
1832                 /*
1833                  * Since our peripheral may be invalidated by an error
1834                  * above or an external event, we must release our CCB
1835                  * before releasing the probe lock on the peripheral.
1836                  * The peripheral will only go away once the last lock
1837                  * is removed, and we need it around for the CCB release
1838                  * operation.
1839                  */
1840                 xpt_release_ccb(done_ccb);
1841                 cam_periph_unlock(periph);
1842                 return;
1843         }
1844         case DA_CCB_WAITING:
1845         {
1846                 /* Caller will release the CCB */
1847                 wakeup(&done_ccb->ccb_h.cbfcnp);
1848                 return;
1849         }
1850         case DA_CCB_DUMP:
1851                 /* No-op.  We're polling */
1852                 return;
1853         default:
1854                 break;
1855         }
1856         xpt_release_ccb(done_ccb);
1857 }
1858
1859 static int
1860 daerror(union ccb *ccb, u_int32_t cam_flags, u_int32_t sense_flags)
1861 {
1862         struct da_softc   *softc;
1863         struct cam_periph *periph;
1864         int error;
1865
1866         periph = xpt_path_periph(ccb->ccb_h.path);
1867         softc = (struct da_softc *)periph->softc;
1868
1869         /*
1870          * Automatically detect devices that do not support
1871          * READ(6)/WRITE(6) and upgrade to using 10 byte cdbs.
1872          */
1873         error = 0;
1874         if ((ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_INVALID) {
1875                 error = cmd6workaround(ccb);
1876         } else if (((ccb->ccb_h.status & CAM_STATUS_MASK) ==
1877                    CAM_SCSI_STATUS_ERROR)
1878          && (ccb->ccb_h.status & CAM_AUTOSNS_VALID)
1879          && (ccb->csio.scsi_status == SCSI_STATUS_CHECK_COND)
1880          && ((ccb->ccb_h.flags & CAM_SENSE_PHYS) == 0)
1881          && ((ccb->ccb_h.flags & CAM_SENSE_PTR) == 0)) {
1882                 int sense_key, error_code, asc, ascq;
1883
1884                 scsi_extract_sense(&ccb->csio.sense_data,
1885                                    &error_code, &sense_key, &asc, &ascq);
1886                 if (sense_key == SSD_KEY_ILLEGAL_REQUEST)
1887                         error = cmd6workaround(ccb);
1888         }
1889         if (error == ERESTART)
1890                 return (ERESTART);
1891
1892         /*
1893          * XXX
1894          * Until we have a better way of doing pack validation,
1895          * don't treat UAs as errors.
1896          */
1897         sense_flags |= SF_RETRY_UA;
1898         return(cam_periph_error(ccb, cam_flags, sense_flags,
1899                                 &softc->saved_ccb));
1900 }
1901
1902 static void
1903 daprevent(struct cam_periph *periph, int action)
1904 {
1905         struct  da_softc *softc;
1906         union   ccb *ccb;
1907         int     error;
1908
1909         softc = (struct da_softc *)periph->softc;
1910
1911         if (((action == PR_ALLOW)
1912           && (softc->flags & DA_FLAG_PACK_LOCKED) == 0)
1913          || ((action == PR_PREVENT)
1914           && (softc->flags & DA_FLAG_PACK_LOCKED) != 0)) {
1915                 return;
1916         }
1917
1918         ccb = cam_periph_getccb(periph, /*priority*/1);
1919
1920         scsi_prevent(&ccb->csio,
1921                      /*retries*/1,
1922                      /*cbcfp*/dadone,
1923                      MSG_SIMPLE_Q_TAG,
1924                      action,
1925                      SSD_FULL_SIZE,
1926                      5000);
1927
1928         error = cam_periph_runccb(ccb, /*error_routine*/NULL, /*cam_flags*/0,
1929                                   /*sense_flags*/0, &softc->device_stats);
1930
1931         if (error == 0) {
1932                 if (action == PR_ALLOW)
1933                         softc->flags &= ~DA_FLAG_PACK_LOCKED;
1934                 else
1935                         softc->flags |= DA_FLAG_PACK_LOCKED;
1936         }
1937
1938         xpt_release_ccb(ccb);
1939 }
1940
1941 static int
1942 dagetcapacity(struct cam_periph *periph)
1943 {
1944         struct da_softc *softc;
1945         union ccb *ccb;
1946         struct scsi_read_capacity_data *rcap;
1947         struct scsi_read_capacity_data_long *rcaplong;
1948         uint32_t block_len;
1949         uint64_t maxsector;
1950         int error;
1951
1952         softc = (struct da_softc *)periph->softc;
1953         block_len = 0;
1954         maxsector = 0;
1955         error = 0;
1956
1957         /* Do a read capacity */
1958         rcap = (void *)kmalloc(sizeof(*rcaplong), M_TEMP, M_INTWAIT);
1959
1960         ccb = cam_periph_getccb(periph, /*priority*/1);
1961         scsi_read_capacity(&ccb->csio,
1962                            /*retries*/4,
1963                            /*cbfncp*/dadone,
1964                            MSG_SIMPLE_Q_TAG,
1965                            rcap,
1966                            SSD_FULL_SIZE,
1967                            /*timeout*/60000);
1968         ccb->ccb_h.ccb_bio = NULL;
1969
1970         error = cam_periph_runccb(ccb, daerror,
1971                                   /*cam_flags*/CAM_RETRY_SELTO,
1972                                   /*sense_flags*/SF_RETRY_UA,
1973                                   &softc->device_stats);
1974
1975         if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
1976                 cam_release_devq(ccb->ccb_h.path,
1977                                  /*relsim_flags*/0,
1978                                  /*reduction*/0,
1979                                  /*timeout*/0,
1980                                  /*getcount_only*/0);
1981
1982         if (error == 0) {
1983                 block_len = scsi_4btoul(rcap->length);
1984                 maxsector = scsi_4btoul(rcap->addr);
1985
1986                 if (maxsector != 0xffffffff)
1987                         goto done;
1988         } else
1989                 goto done;
1990
1991         rcaplong = (struct scsi_read_capacity_data_long *)rcap;
1992
1993         scsi_read_capacity_16(&ccb->csio,
1994                               /*retries*/ 4,
1995                               /*cbfcnp*/ dadone,
1996                               /*tag_action*/ MSG_SIMPLE_Q_TAG,
1997                               /*lba*/ 0,
1998                               /*reladr*/ 0,
1999                               /*pmi*/ 0,
2000                               rcaplong,
2001                               /*sense_len*/ SSD_FULL_SIZE,
2002                               /*timeout*/ 60000);
2003         ccb->ccb_h.ccb_bio = NULL;
2004
2005         error = cam_periph_runccb(ccb, daerror,
2006                                   /*cam_flags*/CAM_RETRY_SELTO,
2007                                   /*sense_flags*/SF_RETRY_UA,
2008                                   &softc->device_stats);
2009
2010         if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
2011                 cam_release_devq(ccb->ccb_h.path,
2012                                  /*relsim_flags*/0,
2013                                  /*reduction*/0,
2014                                  /*timeout*/0,
2015                                  /*getcount_only*/0);
2016
2017         if (error == 0) {
2018                 block_len = scsi_4btoul(rcaplong->length);
2019                 maxsector = scsi_8btou64(rcaplong->addr);
2020         }
2021
2022 done:
2023
2024         if (error == 0)
2025                 dasetgeom(periph, block_len, maxsector);
2026
2027         xpt_release_ccb(ccb);
2028
2029         kfree(rcap, M_TEMP);
2030
2031         return (error);
2032 }
2033
2034 static void
2035 dasetgeom(struct cam_periph *periph, uint32_t block_len, uint64_t maxsector)
2036 {
2037         struct ccb_calc_geometry ccg;
2038         struct da_softc *softc;
2039         struct disk_params *dp;
2040
2041         softc = (struct da_softc *)periph->softc;
2042
2043         dp = &softc->params;
2044         dp->secsize = block_len;
2045         dp->sectors = maxsector + 1;
2046         /*
2047          * Have the controller provide us with a geometry
2048          * for this disk.  The only time the geometry
2049          * matters is when we boot and the controller
2050          * is the only one knowledgeable enough to come
2051          * up with something that will make this a bootable
2052          * device.
2053          */
2054         xpt_setup_ccb(&ccg.ccb_h, periph->path, /*priority*/1);
2055         ccg.ccb_h.func_code = XPT_CALC_GEOMETRY;
2056         ccg.block_size = dp->secsize;
2057         ccg.volume_size = dp->sectors;
2058         ccg.heads = 0;
2059         ccg.secs_per_track = 0;
2060         ccg.cylinders = 0;
2061         xpt_action((union ccb*)&ccg);
2062         dp->heads = ccg.heads;
2063         dp->secs_per_track = ccg.secs_per_track;
2064         dp->cylinders = ccg.cylinders;
2065 }
2066
2067 static void
2068 dasendorderedtag(void *arg)
2069 {
2070         struct da_softc *softc;
2071
2072         for (softc = SLIST_FIRST(&softc_list);
2073              softc != NULL;
2074              softc = SLIST_NEXT(softc, links)) {
2075                 crit_enter();
2076                 if ((softc->ordered_tag_count == 0)
2077                  && ((softc->flags & DA_FLAG_WENT_IDLE) == 0)) {
2078                         softc->flags |= DA_FLAG_NEED_OTAG;
2079                 }
2080                 if (softc->device_stats.busy_count > 0)
2081                         softc->flags &= ~DA_FLAG_WENT_IDLE;
2082
2083                 softc->ordered_tag_count = 0;
2084                 crit_exit();
2085         }
2086         /* Queue us up again */
2087         callout_reset(&dasendorderedtag_ch,
2088             (da_default_timeout * hz) / DA_ORDEREDTAG_INTERVAL,
2089             dasendorderedtag, NULL);
2090 }
2091
2092 /*
2093  * Step through all DA peripheral drivers, and if the device is still open,
2094  * sync the disk cache to physical media.
2095  */
2096 static void
2097 dashutdown(void * arg, int howto)
2098 {
2099         struct cam_periph *periph;
2100         struct da_softc *softc;
2101
2102         TAILQ_FOREACH(periph, &dadriver.units, unit_links) {
2103                 union ccb ccb;
2104
2105                 softc = (struct da_softc *)periph->softc;
2106
2107                 /*
2108                  * We only sync the cache if the drive is still open, and
2109                  * if the drive is capable of it..
2110                  */
2111                 if (((softc->flags & DA_FLAG_OPEN) == 0)
2112                  || (softc->quirks & DA_Q_NO_SYNC_CACHE))
2113                         continue;
2114
2115                 xpt_setup_ccb(&ccb.ccb_h, periph->path, /*priority*/1);
2116
2117                 ccb.ccb_h.ccb_state = DA_CCB_DUMP;
2118                 scsi_synchronize_cache(&ccb.csio,
2119                                        /*retries*/1,
2120                                        /*cbfcnp*/dadone,
2121                                        MSG_SIMPLE_Q_TAG,
2122                                        /*begin_lba*/0, /* whole disk */
2123                                        /*lb_count*/0,
2124                                        SSD_FULL_SIZE,
2125                                        5 * 60 * 1000);
2126
2127                 xpt_polled_action(&ccb);
2128
2129                 if ((ccb.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
2130                         if (((ccb.ccb_h.status & CAM_STATUS_MASK) ==
2131                              CAM_SCSI_STATUS_ERROR)
2132                          && (ccb.csio.scsi_status == SCSI_STATUS_CHECK_COND)){
2133                                 int error_code, sense_key, asc, ascq;
2134
2135                                 scsi_extract_sense(&ccb.csio.sense_data,
2136                                                    &error_code, &sense_key,
2137                                                    &asc, &ascq);
2138
2139                                 if (sense_key != SSD_KEY_ILLEGAL_REQUEST)
2140                                         scsi_sense_print(&ccb.csio);
2141                         } else {
2142                                 xpt_print_path(periph->path);
2143                                 kprintf("Synchronize cache failed, status "
2144                                        "== 0x%x, scsi status == 0x%x\n",
2145                                        ccb.ccb_h.status, ccb.csio.scsi_status);
2146                         }
2147                 }
2148
2149                 if ((ccb.ccb_h.status & CAM_DEV_QFRZN) != 0)
2150                         cam_release_devq(ccb.ccb_h.path,
2151                                          /*relsim_flags*/0,
2152                                          /*reduction*/0,
2153                                          /*timeout*/0,
2154                                          /*getcount_only*/0);
2155
2156         }
2157 }
2158
2159 #else /* !_KERNEL */
2160
2161 /*
2162  * XXX This is only left out of the kernel build to silence warnings.  If,
2163  * for some reason this function is used in the kernel, the ifdefs should
2164  * be moved so it is included both in the kernel and userland.
2165  */
2166 void
2167 scsi_format_unit(struct ccb_scsiio *csio, u_int32_t retries,
2168                  void (*cbfcnp)(struct cam_periph *, union ccb *),
2169                  u_int8_t tag_action, u_int8_t byte2, u_int16_t ileave,
2170                  u_int8_t *data_ptr, u_int32_t dxfer_len, u_int8_t sense_len,
2171                  u_int32_t timeout)
2172 {
2173         struct scsi_format_unit *scsi_cmd;
2174
2175         scsi_cmd = (struct scsi_format_unit *)&csio->cdb_io.cdb_bytes;
2176         scsi_cmd->opcode = FORMAT_UNIT;
2177         scsi_cmd->byte2 = byte2;
2178         scsi_ulto2b(ileave, scsi_cmd->interleave);
2179
2180         cam_fill_csio(csio,
2181                       retries,
2182                       cbfcnp,
2183                       /*flags*/ (dxfer_len > 0) ? CAM_DIR_OUT : CAM_DIR_NONE,
2184                       tag_action,
2185                       data_ptr,
2186                       dxfer_len,
2187                       sense_len,
2188                       sizeof(*scsi_cmd),
2189                       timeout);
2190 }
2191
2192 #endif /* _KERNEL */