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 1.41 2007/11/14 02:05:35 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 DATA_SET(periphdriver_set, 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         periph = cam_extend_get(daperiphs, unit);
 534         if (periph == NULL)
 535                 return (ENXIO);
 536
 537         softc = (struct da_softc *)periph->softc;
 538
 539         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE,
 540             ("daopen: dev=%s (unit %d , partition %d)\n", devtoname(dev),
 541              unit, part));
 542
 543         if ((error = cam_periph_lock(periph, PCATCH)) != 0) {
 544                 return (error); /* error code from tsleep */
 545         }
 546
 547         if ((softc->flags & DA_FLAG_OPEN) == 0) {
 548                 if (cam_periph_acquire(periph) != CAM_REQ_CMP)
 549                         return(ENXIO);
 550                 softc->flags |= DA_FLAG_OPEN;
 551         }
 552
 553         crit_enter();
 554         if ((softc->flags & DA_FLAG_PACK_INVALID) != 0) {
 555                 /* Invalidate our pack information. */
 556                 disk_invalidate(&softc->disk);
 557                 softc->flags &= ~DA_FLAG_PACK_INVALID;
 558         }
 559         crit_exit();
 560
 561         error = dagetcapacity(periph);
 562
 563 #if 0
 564         /* Do a read capacity */
 565         {
 566                 struct scsi_read_capacity_data *rcap;
 567                 union  ccb *ccb;
 568
 569                 rcap = kmalloc(sizeof(*rcap), M_TEMP, M_INTWAIT | M_ZERO);
 570
 571                 ccb = cam_periph_getccb(periph, /*priority*/1);
 572                 scsi_read_capacity(&ccb->csio,
 573                                    /*retries*/1,
 574                                    /*cbfncp*/dadone,
 575                                    MSG_SIMPLE_Q_TAG,
 576                                    rcap,
 577                                    SSD_FULL_SIZE,
 578                                    /*timeout*/60000);
 579                 ccb->ccb_h.ccb_bio = NULL;
 580
 581                 error = cam_periph_runccb(ccb, daerror, /*cam_flags*/0,
 582                                           /*sense_flags*/SF_RETRY_UA |
 583                                                          SF_RETRY_SELTO,
 584                                           &softc->device_stats);
 585
 586                 xpt_release_ccb(ccb);
 587
 588                 if (error == 0) {
 589                         dasetgeom(periph, rcap);
 590                 }
 591
 592                 kfree(rcap, M_TEMP);
 593         }
 594 #endif
 595
 596         if (error == 0) {
 597                 struct ccb_getdev cgd;
 598
 599                 /* Build disk information structure */
 600                 bzero(&info, sizeof(info));
 601                 info.d_type = DTYPE_SCSI;
 602
 603                 /*
 604                  * Grab the inquiry data to get the vendor and product names.
 605                  * Put them in the typename and packname for the label.
 606                  */
 607                 xpt_setup_ccb(&cgd.ccb_h, periph->path, /*priority*/ 1);
 608                 cgd.ccb_h.func_code = XPT_GDEV_TYPE;
 609                 xpt_action((union ccb *)&cgd);
 610
 611 #if 0
 612                 strncpy(label->d_typename, cgd.inq_data.vendor,
 613                         min(SID_VENDOR_SIZE, sizeof(label->d_typename)));
 614                 strncpy(label->d_packname, cgd.inq_data.product,
 615                         min(SID_PRODUCT_SIZE, sizeof(label->d_packname)));
 616 #endif
 617
 618                 /*
 619                  * Mandatory fields
 620                  */
 621                 info.d_media_blksize = softc->params.secsize;
 622                 info.d_media_blocks = softc->params.sectors;
 623                 info.d_media_size = 0;
 624
 625                 /*
 626                  * Optional fields
 627                  */
 628                 info.d_secpertrack = softc->params.secs_per_track;
 629                 info.d_nheads = softc->params.heads;
 630                 info.d_ncylinders = softc->params.cylinders;
 631                 info.d_secpercyl = softc->params.heads *
 632                                    softc->params.secs_per_track;
 633                 disk_setdiskinfo(&softc->disk, &info);
 634
 635                 if ((softc->flags & DA_FLAG_PACK_REMOVABLE) != 0 &&
 636                     (softc->quirks & DA_Q_NO_PREVENT) == 0)
 637                         daprevent(periph, PR_PREVENT);
 638
 639                 /*
 640                  * Check to see whether or not the blocksize is set yet.
 641                  * If it isn't, set it and then clear the blocksize
 642                  * unavailable flag for the device statistics.
 643                  */
 644                 if ((softc->device_stats.flags & DEVSTAT_BS_UNAVAILABLE) != 0){
 645                         softc->device_stats.block_size = softc->params.secsize;
 646                         softc->device_stats.flags &= ~DEVSTAT_BS_UNAVAILABLE;
 647                 }
 648         }
 649
 650         if (error != 0) {
 651                 if ((softc->flags & DA_FLAG_PACK_REMOVABLE) != 0 &&
 652                     (softc->quirks & DA_Q_NO_PREVENT) == 0)
 653                         daprevent(periph, PR_ALLOW);
 654                 softc->flags &= ~DA_FLAG_OPEN;
 655                 cam_periph_release(periph);
 656         }
 657         cam_periph_unlock(periph);
 658         return (error);
 659 }
 660
 661 static int
 662 daclose(struct dev_close_args *ap)
 663 {
 664         cdev_t dev = ap->a_head.a_dev;
 665         struct  cam_periph *periph;
 666         struct  da_softc *softc;
 667         int     unit;
 668         int     error;
 669
 670         unit = dkunit(dev);
 671         periph = cam_extend_get(daperiphs, unit);
 672         if (periph == NULL)
 673                 return (ENXIO);
 674
 675         softc = (struct da_softc *)periph->softc;
 676
 677         if ((error = cam_periph_lock(periph, 0)) != 0) {
 678                 return (error); /* error code from tsleep */
 679         }
 680
 681         if ((softc->quirks & DA_Q_NO_SYNC_CACHE) == 0) {
 682                 union   ccb *ccb;
 683
 684                 ccb = cam_periph_getccb(periph, /*priority*/1);
 685
 686                 scsi_synchronize_cache(&ccb->csio,
 687                                        /*retries*/1,
 688                                        /*cbfcnp*/dadone,
 689                                        MSG_SIMPLE_Q_TAG,
 690                                        /*begin_lba*/0,/* Cover the whole disk */
 691                                        /*lb_count*/0,
 692                                        SSD_FULL_SIZE,
 693                                        5 * 60 * 1000);
 694
 695                 cam_periph_runccb(ccb, /*error_routine*/NULL, /*cam_flags*/0,
 696                                   /*sense_flags*/SF_RETRY_UA,
 697                                   &softc->device_stats);
 698
 699                 if ((ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
 700                         if ((ccb->ccb_h.status & CAM_STATUS_MASK) ==
 701                              CAM_SCSI_STATUS_ERROR) {
 702                                 int asc, ascq;
 703                                 int sense_key, error_code;
 704
 705                                 scsi_extract_sense(&ccb->csio.sense_data,
 706                                                    &error_code,
 707                                                    &sense_key,
 708                                                    &asc, &ascq);
 709                                 if (sense_key != SSD_KEY_ILLEGAL_REQUEST)
 710                                         scsi_sense_print(&ccb->csio);
 711                         } else {
 712                                 xpt_print_path(periph->path);
 713                                 kprintf("Synchronize cache failed, status "
 714                                        "== 0x%x, scsi status == 0x%x\n",
 715                                        ccb->csio.ccb_h.status,
 716                                        ccb->csio.scsi_status);
 717                         }
 718                 }
 719
 720                 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
 721                         cam_release_devq(ccb->ccb_h.path,
 722                                          /*relsim_flags*/0,
 723                                          /*reduction*/0,
 724                                          /*timeout*/0,
 725                                          /*getcount_only*/0);
 726
 727                 xpt_release_ccb(ccb);
 728
 729         }
 730
 731         if ((softc->flags & DA_FLAG_PACK_REMOVABLE) != 0) {
 732                 if ((softc->quirks & DA_Q_NO_PREVENT) == 0)
 733                         daprevent(periph, PR_ALLOW);
 734                 /*
 735                  * If we've got removeable media, mark the blocksize as
 736                  * unavailable, since it could change when new media is
 737                  * inserted.
 738                  */
 739                 softc->device_stats.flags |= DEVSTAT_BS_UNAVAILABLE;
 740         }
 741
 742         /*
 743          * Don't compound any ref counting software bugs with more.
 744          */
 745         if (softc->flags & DA_FLAG_OPEN) {
 746                 softc->flags &= ~DA_FLAG_OPEN;
 747                 cam_periph_release(periph);
 748         } else {
 749                 xpt_print_path(periph->path);
 750                 kprintf("daclose() called on an already closed device!\n");
 751         }
 752         cam_periph_unlock(periph);
 753         return (0);
 754 }
 755
 756 /*
 757  * Actually translate the requested transfer into one the physical driver
 758  * can understand.  The transfer is described by a buf and will include
 759  * only one physical transfer.
 760  */
 761 static int
 762 dastrategy(struct dev_strategy_args *ap)
 763 {
 764         cdev_t dev = ap->a_head.a_dev;
 765         struct bio *bio = ap->a_bio;
 766         struct buf *bp = bio->bio_buf;
 767         struct cam_periph *periph;
 768         struct da_softc *softc;
 769         u_int  unit;
 770         u_int  part;
 771
 772         unit = dkunit(dev);
 773         part = dkpart(dev);
 774         periph = cam_extend_get(daperiphs, unit);
 775         if (periph == NULL) {
 776                 bp->b_error = ENXIO;
 777                 goto bad;
 778         }
 779         softc = (struct da_softc *)periph->softc;
 780 #if 0
 781         /*
 782          * check it's not too big a transfer for our adapter
 783          */
 784         scsi_minphys(bp, &sd_switch);
 785 #endif
 786
 787         /*
 788          * Mask interrupts so that the pack cannot be invalidated until
 789          * after we are in the queue.  Otherwise, we might not properly
 790          * clean up one of the buffers.
 791          */
 792         crit_enter();
 793
 794         /*
 795          * If the device has been made invalid, error out
 796          */
 797         if ((softc->flags & DA_FLAG_PACK_INVALID)) {
 798                 crit_exit();
 799                 bp->b_error = ENXIO;
 800                 goto bad;
 801         }
 802
 803         /*
 804          * Place it in the queue of disk activities for this disk
 805          */
 806         bioqdisksort(&softc->bio_queue, bio);
 807
 808         crit_exit();
 809
 810         /*
 811          * Schedule ourselves for performing the work.
 812          */
 813         xpt_schedule(periph, /* XXX priority */1);
 814
 815         return(0);
 816 bad:
 817         bp->b_flags |= B_ERROR;
 818
 819         /*
 820          * Correctly set the buf to indicate a completed xfer
 821          */
 822         bp->b_resid = bp->b_bcount;
 823         biodone(bio);
 824         return(0);
 825 }
 826
 827 /* For 2.2-stable support */
 828 #ifndef ENOIOCTL
 829 #define ENOIOCTL -1
 830 #endif
 831
 832 static int
 833 daioctl(struct dev_ioctl_args *ap)
 834 {
 835         cdev_t dev = ap->a_head.a_dev;
 836         struct cam_periph *periph;
 837         struct da_softc *softc;
 838         int unit;
 839         int error;
 840
 841         unit = dkunit(dev);
 842         periph = cam_extend_get(daperiphs, unit);
 843         if (periph == NULL)
 844                 return (ENXIO);
 845
 846         softc = (struct da_softc *)periph->softc;
 847
 848         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("daioctl\n"));
 849
 850         if ((error = cam_periph_lock(periph, PCATCH)) != 0) {
 851                 return (error); /* error code from tsleep */
 852         }
 853
 854         error = cam_periph_ioctl(periph, ap->a_cmd, ap->a_data, daerror);
 855
 856         cam_periph_unlock(periph);
 857
 858         return (error);
 859 }
 860
 861 static int
 862 dadump(struct dev_dump_args *ap)
 863 {
 864         cdev_t dev = ap->a_head.a_dev;
 865         struct      cam_periph *periph;
 866         struct      da_softc *softc;
 867         u_int       unit;
 868         long        blkcnt;
 869         vm_paddr_t  addr;
 870         struct      ccb_scsiio csio;
 871         int         dumppages = MAXDUMPPGS;
 872         int         i;
 873
 874         /* toss any characters present prior to dump */
 875         while (cncheckc() != -1)
 876                 ;
 877
 878         unit = dkunit(dev);
 879         periph = cam_extend_get(daperiphs, unit);
 880         if (periph == NULL) {
 881                 return (ENXIO);
 882         }
 883         softc = (struct da_softc *)periph->softc;
 884
 885         if ((softc->flags & DA_FLAG_PACK_INVALID) != 0)
 886                 return (ENXIO);
 887
 888         addr = 0;       /* starting address */
 889         blkcnt = howmany(PAGE_SIZE, ap->a_secsize);
 890
 891         while (ap->a_count > 0) {
 892                 caddr_t va = NULL;
 893
 894                 if ((ap->a_count / blkcnt) < dumppages)
 895                         dumppages = ap->a_count / blkcnt;
 896
 897                 for (i = 0; i < dumppages; ++i) {
 898                         vm_paddr_t a = addr + (i * PAGE_SIZE);
 899                         if (is_physical_memory(a))
 900                                 va = pmap_kenter_temporary(trunc_page(a), i);
 901                         else
 902                                 va = pmap_kenter_temporary(trunc_page(0), i);
 903                 }
 904
 905                 xpt_setup_ccb(&csio.ccb_h, periph->path, /*priority*/1);
 906                 csio.ccb_h.ccb_state = DA_CCB_DUMP;
 907                 scsi_read_write(&csio,
 908                                 /*retries*/1,
 909                                 dadone,
 910                                 MSG_ORDERED_Q_TAG,
 911                                 /*read*/FALSE,
 912                                 /*byte2*/0,
 913                                 /*minimum_cmd_size*/ softc->minimum_cmd_size,
 914                                 ap->a_blkno,
 915                                 blkcnt * dumppages,
 916                                 /*data_ptr*/(u_int8_t *) va,
 917                                 /*dxfer_len*/blkcnt * ap->a_secsize * dumppages,
 918                                 /*sense_len*/SSD_FULL_SIZE,
 919                                 DA_DEFAULT_TIMEOUT * 1000);
 920                 xpt_polled_action((union ccb *)&csio);
 921
 922                 if ((csio.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
 923                         kprintf("Aborting dump due to I/O error.\n");
 924                         if ((csio.ccb_h.status & CAM_STATUS_MASK) ==
 925                              CAM_SCSI_STATUS_ERROR)
 926                                 scsi_sense_print(&csio);
 927                         else
 928                                 kprintf("status == 0x%x, scsi status == 0x%x\n",
 929                                        csio.ccb_h.status, csio.scsi_status);
 930                         return(EIO);
 931                 }
 932
 933                 if (dumpstatus(addr, (off_t)ap->a_count * softc->params.secsize) < 0)
 934                         return (EINTR);
 935
 936                 /* update block count */
 937                 ap->a_count -= blkcnt * dumppages;
 938                 ap->a_blkno += blkcnt * dumppages;
 939                 addr += PAGE_SIZE * dumppages;
 940         }
 941
 942         /*
 943          * Sync the disk cache contents to the physical media.
 944          */
 945         if ((softc->quirks & DA_Q_NO_SYNC_CACHE) == 0) {
 946
 947                 xpt_setup_ccb(&csio.ccb_h, periph->path, /*priority*/1);
 948                 csio.ccb_h.ccb_state = DA_CCB_DUMP;
 949                 scsi_synchronize_cache(&csio,
 950                                        /*retries*/1,
 951                                        /*cbfcnp*/dadone,
 952                                        MSG_SIMPLE_Q_TAG,
 953                                        /*begin_lba*/0,/* Cover the whole disk */
 954                                        /*lb_count*/0,
 955                                        SSD_FULL_SIZE,
 956                                        5 * 60 * 1000);
 957                 xpt_polled_action((union ccb *)&csio);
 958
 959                 if ((csio.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
 960                         if ((csio.ccb_h.status & CAM_STATUS_MASK) ==
 961                              CAM_SCSI_STATUS_ERROR) {
 962                                 int asc, ascq;
 963                                 int sense_key, error_code;
 964
 965                                 scsi_extract_sense(&csio.sense_data,
 966                                                    &error_code,
 967                                                    &sense_key,
 968                                                    &asc, &ascq);
 969                                 if (sense_key != SSD_KEY_ILLEGAL_REQUEST)
 970                                         scsi_sense_print(&csio);
 971                         } else {
 972                                 xpt_print_path(periph->path);
 973                                 kprintf("Synchronize cache failed, status "
 974                                        "== 0x%x, scsi status == 0x%x\n",
 975                                        csio.ccb_h.status, csio.scsi_status);
 976                         }
 977                 }
 978         }
 979         return (0);
 980 }
 981
 982 static void
 983 dainit(void)
 984 {
 985         cam_status status;
 986         struct cam_path *path;
 987
 988         /*
 989          * Create our extend array for storing the devices we attach to.
 990          */
 991         daperiphs = cam_extend_new();
 992         SLIST_INIT(&softc_list);
 993         if (daperiphs == NULL) {
 994                 kprintf("da: Failed to alloc extend array!\n");
 995                 return;
 996         }
 997
 998         callout_init(&dasendorderedtag_ch);
 999
1000         /*
1001          * Install a global async callback.  This callback will
1002          * receive async callbacks like "new device found".
1003          */
1004         status = xpt_create_path(&path, /*periph*/NULL, CAM_XPT_PATH_ID,
1005                                  CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD);
1006
1007         if (status == CAM_REQ_CMP) {
1008                 struct ccb_setasync csa;
1009
1010                 xpt_setup_ccb(&csa.ccb_h, path, /*priority*/5);
1011                 csa.ccb_h.func_code = XPT_SASYNC_CB;
1012                 csa.event_enable = AC_FOUND_DEVICE;
1013                 csa.callback = daasync;
1014                 csa.callback_arg = NULL;
1015                 xpt_action((union ccb *)&csa);
1016                 status = csa.ccb_h.status;
1017                 xpt_free_path(path);
1018         }
1019
1020         if (status != CAM_REQ_CMP) {
1021                 kprintf("da: Failed to attach master async callback "
1022                        "due to status 0x%x!\n", status);
1023         } else {
1024
1025                 /*
1026                  * Schedule a periodic event to occasionally send an
1027                  * ordered tag to a device.
1028                  */
1029                 callout_reset(&dasendorderedtag_ch,
1030                     (DA_DEFAULT_TIMEOUT * hz) / DA_ORDEREDTAG_INTERVAL,
1031                     dasendorderedtag, NULL);
1032
1033                 /* Register our shutdown event handler */
1034                 if ((EVENTHANDLER_REGISTER(shutdown_post_sync, dashutdown,
1035                                            NULL, SHUTDOWN_PRI_DEFAULT)) == NULL)
1036                     kprintf("dainit: shutdown event registration failed!\n");
1037         }
1038 }
1039
1040 static void
1041 daoninvalidate(struct cam_periph *periph)
1042 {
1043         struct da_softc *softc;
1044         struct bio *q_bio;
1045         struct buf *q_bp;
1046         struct ccb_setasync csa;
1047
1048         softc = (struct da_softc *)periph->softc;
1049
1050         /*
1051          * De-register any async callbacks.
1052          */
1053         xpt_setup_ccb(&csa.ccb_h, periph->path,
1054                       /* priority */ 5);
1055         csa.ccb_h.func_code = XPT_SASYNC_CB;
1056         csa.event_enable = 0;
1057         csa.callback = daasync;
1058         csa.callback_arg = periph;
1059         xpt_action((union ccb *)&csa);
1060
1061         softc->flags |= DA_FLAG_PACK_INVALID;
1062
1063         /*
1064          * Use a critical section to keep the buffer queue from being
1065          * modified while we traverse it.
1066          */
1067         crit_enter();
1068
1069         /*
1070          * Return all queued I/O with ENXIO.
1071          * XXX Handle any transactions queued to the card
1072          *     with XPT_ABORT_CCB.
1073          */
1074         while ((q_bio = bioq_first(&softc->bio_queue)) != NULL){
1075                 bioq_remove(&softc->bio_queue, q_bio);
1076                 q_bp = q_bio->bio_buf;
1077                 q_bp->b_resid = q_bp->b_bcount;
1078                 q_bp->b_error = ENXIO;
1079                 q_bp->b_flags |= B_ERROR;
1080                 biodone(q_bio);
1081         }
1082         crit_exit();
1083
1084         SLIST_REMOVE(&softc_list, softc, da_softc, links);
1085
1086         xpt_print_path(periph->path);
1087         kprintf("lost device\n");
1088 }
1089
1090 static void
1091 dacleanup(struct cam_periph *periph)
1092 {
1093         struct da_softc *softc;
1094
1095         softc = (struct da_softc *)periph->softc;
1096
1097         devstat_remove_entry(&softc->device_stats);
1098         cam_extend_release(daperiphs, periph->unit_number);
1099         xpt_print_path(periph->path);
1100         kprintf("removing device entry\n");
1101         /*
1102          * If we can't free the sysctl tree, oh well...
1103          */
1104         if ((softc->flags & DA_FLAG_SCTX_INIT) != 0
1105             && sysctl_ctx_free(&softc->sysctl_ctx) != 0) {
1106                 xpt_print_path(periph->path);
1107                 kprintf("can't remove sysctl context\n");
1108         }
1109         if (softc->disk.d_rawdev) {
1110                 disk_destroy(&softc->disk);
1111         }
1112         kfree(softc, M_DEVBUF);
1113 }
1114
1115 static void
1116 daasync(void *callback_arg, u_int32_t code,
1117         struct cam_path *path, void *arg)
1118 {
1119         struct cam_periph *periph;
1120
1121         periph = (struct cam_periph *)callback_arg;
1122         switch (code) {
1123         case AC_FOUND_DEVICE:
1124         {
1125                 struct ccb_getdev *cgd;
1126                 cam_status status;
1127
1128                 cgd = (struct ccb_getdev *)arg;
1129
1130                 if (SID_TYPE(&cgd->inq_data) != T_DIRECT
1131                     && SID_TYPE(&cgd->inq_data) != T_RBC
1132                     && SID_TYPE(&cgd->inq_data) != T_OPTICAL)
1133                         break;
1134
1135                 /*
1136                  * Allocate a peripheral instance for
1137                  * this device and start the probe
1138                  * process.
1139                  */
1140                 status = cam_periph_alloc(daregister, daoninvalidate,
1141                                           dacleanup, dastart,
1142                                           "da", CAM_PERIPH_BIO,
1143                                           cgd->ccb_h.path, daasync,
1144                                           AC_FOUND_DEVICE, cgd);
1145
1146                 if (status != CAM_REQ_CMP
1147                  && status != CAM_REQ_INPROG)
1148                         kprintf("daasync: Unable to attach to new device "
1149                                 "due to status 0x%x\n", status);
1150                 break;
1151         }
1152         case AC_SENT_BDR:
1153         case AC_BUS_RESET:
1154         {
1155                 struct da_softc *softc;
1156                 struct ccb_hdr *ccbh;
1157
1158                 softc = (struct da_softc *)periph->softc;
1159                 crit_enter();
1160                 /*
1161                  * Don't fail on the expected unit attention
1162                  * that will occur.
1163                  */
1164                 softc->flags |= DA_FLAG_RETRY_UA;
1165                 LIST_FOREACH(ccbh, &softc->pending_ccbs, periph_links.le)
1166                         ccbh->ccb_state |= DA_CCB_RETRY_UA;
1167                 crit_exit();
1168                 /* FALLTHROUGH*/
1169         }
1170         default:
1171                 cam_periph_async(periph, code, path, arg);
1172                 break;
1173         }
1174 }
1175
1176 static void
1177 dasysctlinit(void *context, int pending)
1178 {
1179         struct cam_periph *periph;
1180         struct da_softc *softc;
1181         char tmpstr[80], tmpstr2[80];
1182
1183         periph = (struct cam_periph *)context;
1184         softc = (struct da_softc *)periph->softc;
1185
1186         ksnprintf(tmpstr, sizeof(tmpstr), "CAM DA unit %d", periph->unit_number);
1187         ksnprintf(tmpstr2, sizeof(tmpstr2), "%d", periph->unit_number);
1188
1189         sysctl_ctx_init(&softc->sysctl_ctx);
1190         softc->flags |= DA_FLAG_SCTX_INIT;
1191         softc->sysctl_tree = SYSCTL_ADD_NODE(&softc->sysctl_ctx,
1192                 SYSCTL_STATIC_CHILDREN(_kern_cam_da), OID_AUTO, tmpstr2,
1193                 CTLFLAG_RD, 0, tmpstr);
1194         if (softc->sysctl_tree == NULL) {
1195                 kprintf("dasysctlinit: unable to allocate sysctl tree\n");
1196                 return;
1197         }
1198
1199         /*
1200          * Now register the sysctl handler, so the user can the value on
1201          * the fly.
1202          */
1203         SYSCTL_ADD_PROC(&softc->sysctl_ctx,SYSCTL_CHILDREN(softc->sysctl_tree),
1204                 OID_AUTO, "minimum_cmd_size", CTLTYPE_INT | CTLFLAG_RW,
1205                 &softc->minimum_cmd_size, 0, dacmdsizesysctl, "I",
1206                 "Minimum CDB size");
1207 }
1208
1209 static int
1210 dacmdsizesysctl(SYSCTL_HANDLER_ARGS)
1211 {
1212         int error, value;
1213
1214         value = *(int *)arg1;
1215
1216         error = sysctl_handle_int(oidp, &value, 0, req);
1217
1218         if ((error != 0)
1219          || (req->newptr == NULL))
1220                 return (error);
1221
1222         /*
1223          * Acceptable values here are 6, 10 or 12, or 16.
1224          */
1225         if (value < 6)
1226                 value = 6;
1227         else if ((value > 6)
1228               && (value <= 10))
1229                 value = 10;
1230         else if ((value > 10)
1231               && (value <= 12))
1232                 value = 12;
1233         else if (value > 12)
1234                 value = 16;
1235
1236         *(int *)arg1 = value;
1237
1238         return (0);
1239 }
1240
1241 static cam_status
1242 daregister(struct cam_periph *periph, void *arg)
1243 {
1244         struct da_softc *softc;
1245         struct ccb_setasync csa;
1246         struct ccb_pathinq cpi;
1247         struct ccb_getdev *cgd;
1248         char tmpstr[80];
1249         caddr_t match;
1250
1251         cgd = (struct ccb_getdev *)arg;
1252         if (periph == NULL) {
1253                 kprintf("daregister: periph was NULL!!\n");
1254                 return(CAM_REQ_CMP_ERR);
1255         }
1256
1257         if (cgd == NULL) {
1258                 kprintf("daregister: no getdev CCB, can't register device\n");
1259                 return(CAM_REQ_CMP_ERR);
1260         }
1261
1262         softc = kmalloc(sizeof(*softc), M_DEVBUF, M_INTWAIT | M_ZERO);
1263         LIST_INIT(&softc->pending_ccbs);
1264         softc->state = DA_STATE_PROBE;
1265         bioq_init(&softc->bio_queue);
1266         if (SID_IS_REMOVABLE(&cgd->inq_data))
1267                 softc->flags |= DA_FLAG_PACK_REMOVABLE;
1268         if ((cgd->inq_data.flags & SID_CmdQue) != 0)
1269                 softc->flags |= DA_FLAG_TAGGED_QUEUING;
1270
1271         periph->softc = softc;
1272
1273         cam_extend_set(daperiphs, periph->unit_number, periph);
1274
1275         /*
1276          * See if this device has any quirks.
1277          */
1278         match = cam_quirkmatch((caddr_t)&cgd->inq_data,
1279                                (caddr_t)da_quirk_table,
1280                                sizeof(da_quirk_table)/sizeof(*da_quirk_table),
1281                                sizeof(*da_quirk_table), scsi_inquiry_match);
1282
1283         if (match != NULL)
1284                 softc->quirks = ((struct da_quirk_entry *)match)->quirks;
1285         else
1286                 softc->quirks = DA_Q_NONE;
1287
1288         TASK_INIT(&softc->sysctl_task, 0, dasysctlinit, periph);
1289
1290         /* Check if the SIM does not want 6 byte commands */
1291         xpt_setup_ccb(&cpi.ccb_h, periph->path, /*priority*/1);
1292         cpi.ccb_h.func_code = XPT_PATH_INQ;
1293         xpt_action((union ccb *)&cpi);
1294         if (cpi.ccb_h.status == CAM_REQ_CMP && (cpi.hba_misc & PIM_NO_6_BYTE))
1295                 softc->quirks |= DA_Q_NO_6_BYTE;
1296
1297         /*
1298          * RBC devices don't have to support READ(6), only READ(10).
1299          */
1300         if (softc->quirks & DA_Q_NO_6_BYTE || SID_TYPE(&cgd->inq_data) == T_RBC)
1301                 softc->minimum_cmd_size = 10;
1302         else
1303                 softc->minimum_cmd_size = 6;
1304
1305         /*
1306          * Load the user's default, if any.
1307          */
1308         ksnprintf(tmpstr, sizeof(tmpstr), "kern.cam.da.%d.minimum_cmd_size",
1309                  periph->unit_number);
1310         TUNABLE_INT_FETCH(tmpstr, &softc->minimum_cmd_size);
1311
1312         /*
1313          * 6, 10, 12, and 16 are the currently permissible values.
1314          */
1315         if (softc->minimum_cmd_size < 6)
1316                 softc->minimum_cmd_size = 6;
1317         else if ((softc->minimum_cmd_size > 6)
1318               && (softc->minimum_cmd_size <= 10))
1319                 softc->minimum_cmd_size = 10;
1320         else if ((softc->minimum_cmd_size > 10)
1321               && (softc->minimum_cmd_size <= 12))
1322                 softc->minimum_cmd_size = 12;
1323         else if (softc->minimum_cmd_size > 12)
1324                 softc->minimum_cmd_size = 16;
1325
1326         /*
1327          * Block our timeout handler while we
1328          * add this softc to the dev list.
1329          */
1330         crit_enter();
1331         SLIST_INSERT_HEAD(&softc_list, softc, links);
1332         crit_exit();
1333
1334         /*
1335          * The DA driver supports a blocksize, but
1336          * we don't know the blocksize until we do
1337          * a read capacity.  So, set a flag to
1338          * indicate that the blocksize is
1339          * unavailable right now.  We'll clear the
1340          * flag as soon as we've done a read capacity.
1341          */
1342         devstat_add_entry(&softc->device_stats, "da",
1343                           periph->unit_number, 0,
1344                           DEVSTAT_BS_UNAVAILABLE,
1345                           SID_TYPE(&cgd->inq_data) | DEVSTAT_TYPE_IF_SCSI,
1346                           DEVSTAT_PRIORITY_DISK);
1347
1348         /*
1349          * Register this media as a disk
1350          */
1351         disk_create(periph->unit_number, &softc->disk, &da_ops);
1352         softc->disk.d_rawdev->si_iosize_max = MAXPHYS;
1353
1354         /*
1355          * Add async callbacks for bus reset and
1356          * bus device reset calls.  I don't bother
1357          * checking if this fails as, in most cases,
1358          * the system will function just fine without
1359          * them and the only alternative would be to
1360          * not attach the device on failure.
1361          */
1362         xpt_setup_ccb(&csa.ccb_h, periph->path, /*priority*/5);
1363         csa.ccb_h.func_code = XPT_SASYNC_CB;
1364         csa.event_enable = AC_SENT_BDR | AC_BUS_RESET | AC_LOST_DEVICE;
1365         csa.callback = daasync;
1366         csa.callback_arg = periph;
1367         xpt_action((union ccb *)&csa);
1368         /*
1369          * Lock this peripheral until we are setup.
1370          * This first call can't block
1371          */
1372         cam_periph_lock(periph, 0);
1373         xpt_schedule(periph, /*priority*/5);
1374
1375         return(CAM_REQ_CMP);
1376 }
1377
1378 static void
1379 dastart(struct cam_periph *periph, union ccb *start_ccb)
1380 {
1381         struct da_softc *softc;
1382
1383         softc = (struct da_softc *)periph->softc;
1384
1385
1386         switch (softc->state) {
1387         case DA_STATE_NORMAL:
1388         {
1389                 /* Pull a buffer from the queue and get going on it */
1390                 struct bio *bio;
1391                 struct buf *bp;
1392
1393                 /*
1394                  * See if there is a buf with work for us to do..
1395                  */
1396                 crit_enter();
1397                 bio = bioq_first(&softc->bio_queue);
1398                 if (periph->immediate_priority <= periph->pinfo.priority) {
1399                         CAM_DEBUG_PRINT(CAM_DEBUG_SUBTRACE,
1400                                         ("queuing for immediate ccb\n"));
1401                         start_ccb->ccb_h.ccb_state = DA_CCB_WAITING;
1402                         SLIST_INSERT_HEAD(&periph->ccb_list, &start_ccb->ccb_h,
1403                                           periph_links.sle);
1404                         periph->immediate_priority = CAM_PRIORITY_NONE;
1405                         crit_exit();
1406                         wakeup(&periph->ccb_list);
1407                 } else if (bio == NULL) {
1408                         crit_exit();
1409                         xpt_release_ccb(start_ccb);
1410                 } else {
1411                         u_int8_t tag_code;
1412
1413                         bioq_remove(&softc->bio_queue, bio);
1414                         bp = bio->bio_buf;
1415
1416                         devstat_start_transaction(&softc->device_stats);
1417
1418                         if ((bp->b_flags & B_ORDERED) != 0
1419                          || (softc->flags & DA_FLAG_NEED_OTAG) != 0) {
1420                                 softc->flags &= ~DA_FLAG_NEED_OTAG;
1421                                 softc->ordered_tag_count++;
1422                                 tag_code = MSG_ORDERED_Q_TAG;
1423                         } else {
1424                                 tag_code = MSG_SIMPLE_Q_TAG;
1425                         }
1426
1427                         KKASSERT(bio->bio_offset % softc->params.secsize == 0);
1428
1429                         scsi_read_write(&start_ccb->csio,
1430                                         /*retries*/da_retry_count,
1431                                         dadone,
1432                                         tag_code,
1433                                         (bp->b_cmd == BUF_CMD_READ),
1434                                         /*byte2*/0,
1435                                         softc->minimum_cmd_size,
1436                                         bio->bio_offset / softc->params.secsize,
1437                                         bp->b_bcount / softc->params.secsize,
1438                                         bp->b_data,
1439                                         bp->b_bcount,
1440                                         /*sense_len*/SSD_FULL_SIZE,
1441                                         da_default_timeout * 1000);
1442                         start_ccb->ccb_h.ccb_state = DA_CCB_BUFFER_IO;
1443
1444                         /*
1445                          * Block out any asyncronous callbacks
1446                          * while we touch the pending ccb list.
1447                          */
1448                         LIST_INSERT_HEAD(&softc->pending_ccbs,
1449                                          &start_ccb->ccb_h, periph_links.le);
1450
1451                         /* We expect a unit attention from this device */
1452                         if ((softc->flags & DA_FLAG_RETRY_UA) != 0) {
1453                                 start_ccb->ccb_h.ccb_state |= DA_CCB_RETRY_UA;
1454                                 softc->flags &= ~DA_FLAG_RETRY_UA;
1455                         }
1456
1457                         start_ccb->ccb_h.ccb_bio = bio;
1458                         bio = bioq_first(&softc->bio_queue);
1459                         crit_exit();
1460
1461                         xpt_action(start_ccb);
1462                 }
1463
1464                 if (bio != NULL) {
1465                         /* Have more work to do, so ensure we stay scheduled */
1466                         xpt_schedule(periph, /* XXX priority */1);
1467                 }
1468                 break;
1469         }
1470         case DA_STATE_PROBE:
1471         {
1472                 struct ccb_scsiio *csio;
1473                 struct scsi_read_capacity_data *rcap;
1474
1475                 rcap = kmalloc(sizeof(*rcap), M_TEMP, M_INTWAIT | M_ZERO);
1476                 csio = &start_ccb->csio;
1477                 scsi_read_capacity(csio,
1478                                    /*retries*/4,
1479                                    dadone,
1480                                    MSG_SIMPLE_Q_TAG,
1481                                    rcap,
1482                                    SSD_FULL_SIZE,
1483                                    /*timeout*/5000);
1484                 start_ccb->ccb_h.ccb_bio = NULL;
1485                 start_ccb->ccb_h.ccb_state = DA_CCB_PROBE;
1486                 xpt_action(start_ccb);
1487                 break;
1488         }
1489         case DA_STATE_PROBE2:
1490         {
1491                 struct ccb_scsiio *csio;
1492                 struct scsi_read_capacity_data_long *rcaplong;
1493
1494                 rcaplong = (struct scsi_read_capacity_data_long *)
1495                 kmalloc(sizeof(*rcaplong), M_TEMP, M_INTWAIT);
1496                 if (rcaplong == NULL) {
1497                         kprintf("dastart: Couldn't allocate read_capacity\n");
1498                         /* da_free_periph??? */
1499                         break;
1500                 }
1501                 csio = &start_ccb->csio;
1502                 scsi_read_capacity_16(csio,
1503                                     /*retries*/ 4,
1504                                     /*cbfcnp*/ dadone,
1505                                     /*tag_action*/ MSG_SIMPLE_Q_TAG,
1506                                     /*lba*/ 0,
1507                                     /*reladr*/ 0,
1508                                     /*pmi*/ 0,
1509                                     rcaplong,
1510                                     /*sense_len*/ SSD_FULL_SIZE,
1511                                     /*timeout*/ 60000);
1512                 start_ccb->ccb_h.ccb_bio = NULL;
1513                 start_ccb->ccb_h.ccb_state = DA_CCB_PROBE2;
1514                 xpt_action(start_ccb);
1515                 break;
1516         }
1517         }
1518 }
1519
1520 static int
1521 cmd6workaround(union ccb *ccb)
1522 {
1523         struct scsi_rw_6 cmd6;
1524         struct scsi_rw_10 *cmd10;
1525         struct da_softc *softc;
1526         u_int8_t *cdb;
1527         int frozen;
1528
1529         cdb = ccb->csio.cdb_io.cdb_bytes;
1530
1531         /* Translation only possible if CDB is an array and cmd is R/W6 */
1532         if ((ccb->ccb_h.flags & CAM_CDB_POINTER) != 0 ||
1533             (*cdb != READ_6 && *cdb != WRITE_6))
1534                 return 0;
1535
1536         xpt_print_path(ccb->ccb_h.path);
1537         kprintf("READ(6)/WRITE(6) not supported, "
1538                "increasing minimum_cmd_size to 10.\n");
1539         softc = (struct da_softc *)xpt_path_periph(ccb->ccb_h.path)->softc;
1540         softc->minimum_cmd_size = 10;
1541
1542         bcopy(cdb, &cmd6, sizeof(struct scsi_rw_6));
1543         cmd10 = (struct scsi_rw_10 *)cdb;
1544         cmd10->opcode = (cmd6.opcode == READ_6) ? READ_10 : WRITE_10;
1545         cmd10->byte2 = 0;
1546         scsi_ulto4b(scsi_3btoul(cmd6.addr), cmd10->addr);
1547         cmd10->reserved = 0;
1548         scsi_ulto2b(cmd6.length, cmd10->length);
1549         cmd10->control = cmd6.control;
1550         ccb->csio.cdb_len = sizeof(*cmd10);
1551
1552         /* Requeue request, unfreezing queue if necessary */
1553         frozen = (ccb->ccb_h.status & CAM_DEV_QFRZN) != 0;
1554         ccb->ccb_h.status = CAM_REQUEUE_REQ;
1555         xpt_action(ccb);
1556         if (frozen) {
1557                 cam_release_devq(ccb->ccb_h.path,
1558                                  /*relsim_flags*/0,
1559                                  /*reduction*/0,
1560                                  /*timeout*/0,
1561                                  /*getcount_only*/0);
1562         }
1563         return (ERESTART);
1564 }
1565
1566 static void
1567 dadone(struct cam_periph *periph, union ccb *done_ccb)
1568 {
1569         struct da_softc *softc;
1570         struct ccb_scsiio *csio;
1571
1572         softc = (struct da_softc *)periph->softc;
1573         csio = &done_ccb->csio;
1574         switch (csio->ccb_h.ccb_state & DA_CCB_TYPE_MASK) {
1575         case DA_CCB_BUFFER_IO:
1576         {
1577                 struct buf *bp;
1578                 struct bio *bio;
1579
1580                 bio = (struct bio *)done_ccb->ccb_h.ccb_bio;
1581                 bp = bio->bio_buf;
1582                 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1583                         int error;
1584                         int sf;
1585
1586                         if ((csio->ccb_h.ccb_state & DA_CCB_RETRY_UA) != 0)
1587                                 sf = SF_RETRY_UA;
1588                         else
1589                                 sf = 0;
1590
1591                         /* Retry selection timeouts */
1592                         sf |= SF_RETRY_SELTO;
1593
1594                         if ((error = daerror(done_ccb, 0, sf)) == 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                         bp->b_resid = csio->resid;
1652                         if (csio->resid > 0)
1653                                 bp->b_flags |= B_ERROR;
1654                 }
1655
1656                 /*
1657                  * Block out any asyncronous callbacks
1658                  * while we touch the pending ccb list.
1659                  */
1660                 crit_enter();
1661                 LIST_REMOVE(&done_ccb->ccb_h, periph_links.le);
1662                 crit_exit();
1663
1664                 if (softc->device_stats.busy_count == 0)
1665                         softc->flags |= DA_FLAG_WENT_IDLE;
1666
1667                 devstat_end_transaction_buf(&softc->device_stats, bp);
1668                 biodone(bio);
1669                 break;
1670         }
1671         case DA_CCB_PROBE:
1672         case DA_CCB_PROBE2:
1673         {
1674                 struct     scsi_read_capacity_data *rdcap;
1675                 struct     scsi_read_capacity_data_long *rcaplong;
1676                 char       announce_buf[80];
1677
1678                 rdcap = NULL;
1679                 rcaplong = NULL;
1680                 if (softc->state == DA_STATE_PROBE)
1681                         rdcap =(struct scsi_read_capacity_data *)csio->data_ptr;
1682                 else
1683                         rcaplong = (struct scsi_read_capacity_data_long *)
1684                                     csio->data_ptr;
1685
1686                 if ((csio->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP) {
1687                         struct disk_params *dp;
1688                         uint32_t block_size;
1689                         uint64_t maxsector;
1690
1691                         if (softc->state == DA_STATE_PROBE) {
1692                                 block_size = scsi_4btoul(rdcap->length);
1693                                 maxsector = scsi_4btoul(rdcap->addr);
1694
1695                                 /*
1696                                  * According to SBC-2, if the standard 10
1697                                  * byte READ CAPACITY command returns 2^32,
1698                                  * we should issue the 16 byte version of
1699                                  * the command, since the device in question
1700                                  * has more sectors than can be represented
1701                                  * with the short version of the command.
1702                                  */
1703                                 if (maxsector == 0xffffffff) {
1704                                         softc->state = DA_STATE_PROBE2;
1705                                         kfree(rdcap, M_TEMP);
1706                                         xpt_release_ccb(done_ccb);
1707                                         xpt_schedule(periph, /*priority*/5);
1708                                         return;
1709                                 }
1710                         } else {
1711                                 block_size = scsi_4btoul(rcaplong->length);
1712                                 maxsector = scsi_8btou64(rcaplong->addr);
1713                         }
1714                         dasetgeom(periph, block_size, maxsector);
1715                         dp = &softc->params;
1716                         ksnprintf(announce_buf, sizeof(announce_buf),
1717                                 "%juMB (%ju %u byte sectors: %dH %dS/T %dC)",
1718                                 (uintmax_t) (((uintmax_t)dp->secsize *
1719                                 dp->sectors) / (1024*1024)),
1720                                 (uintmax_t)dp->sectors,
1721                                 dp->secsize, dp->heads, dp->secs_per_track,
1722                                 dp->cylinders);
1723                 } else {
1724                         int     error;
1725
1726                         announce_buf[0] = '\0';
1727
1728                         /*
1729                          * Retry any UNIT ATTENTION type errors.  They
1730                          * are expected at boot.
1731                          */
1732                         error = daerror(done_ccb, 0, SF_RETRY_UA |
1733                                         SF_RETRY_SELTO | SF_NO_PRINT);
1734                         if (error == ERESTART) {
1735                                 /*
1736                                  * A retry was scheuled, so
1737                                  * just return.
1738                                  */
1739                                 return;
1740                         } else if (error != 0) {
1741                                 struct scsi_sense_data *sense;
1742                                 int asc, ascq;
1743                                 int sense_key, error_code;
1744                                 int have_sense;
1745                                 cam_status status;
1746                                 struct ccb_getdev cgd;
1747
1748                                 /* Don't wedge this device's queue */
1749                                 cam_release_devq(done_ccb->ccb_h.path,
1750                                                  /*relsim_flags*/0,
1751                                                  /*reduction*/0,
1752                                                  /*timeout*/0,
1753                                                  /*getcount_only*/0);
1754
1755                                 status = done_ccb->ccb_h.status;
1756
1757                                 xpt_setup_ccb(&cgd.ccb_h,
1758                                               done_ccb->ccb_h.path,
1759                                               /* priority */ 1);
1760                                 cgd.ccb_h.func_code = XPT_GDEV_TYPE;
1761                                 xpt_action((union ccb *)&cgd);
1762
1763                                 if (((csio->ccb_h.flags & CAM_SENSE_PHYS) != 0)
1764                                  || ((csio->ccb_h.flags & CAM_SENSE_PTR) != 0)
1765                                  || ((status & CAM_AUTOSNS_VALID) == 0))
1766                                         have_sense = FALSE;
1767                                 else
1768                                         have_sense = TRUE;
1769
1770                                 if (have_sense) {
1771                                         sense = &csio->sense_data;
1772                                         scsi_extract_sense(sense, &error_code,
1773                                                            &sense_key,
1774                                                            &asc, &ascq);
1775                                 }
1776                                 /*
1777                                  * Attach to anything that claims to be a
1778                                  * direct access or optical disk device,
1779                                  * as long as it doesn't return a "Logical
1780                                  * unit not supported" (0x25) error.
1781                                  */
1782                                 if ((have_sense) && (asc != 0x25)
1783                                  && (error_code == SSD_CURRENT_ERROR))
1784                                         ksnprintf(announce_buf,
1785                                             sizeof(announce_buf),
1786                                                 "Attempt to query device "
1787                                                 "size failed: %s, %s",
1788                                                 scsi_sense_key_text[sense_key],
1789                                                 scsi_sense_desc(asc,ascq,
1790                                                                 &cgd.inq_data));
1791                                 else {
1792                                         if (have_sense)
1793                                                 scsi_sense_print(
1794                                                         &done_ccb->csio);
1795                                         else {
1796                                                 xpt_print_path(periph->path);
1797                                                 kprintf("got CAM status %#x\n",
1798                                                        done_ccb->ccb_h.status);
1799                                         }
1800
1801                                         xpt_print_path(periph->path);
1802                                         kprintf("fatal error, failed"
1803                                                " to attach to device\n");
1804
1805                                         /*
1806                                          * Free up resources.
1807                                          */
1808                                         cam_periph_invalidate(periph);
1809                                 }
1810                         }
1811                 }
1812                 kfree(csio->data_ptr, M_TEMP);
1813                 if (announce_buf[0] != '\0') {
1814                         xpt_announce_periph(periph, announce_buf);
1815                         /*
1816                          * Create our sysctl variables, now that we know
1817                          * we have successfully attached.
1818                          */
1819                         taskqueue_enqueue(taskqueue_thread[mycpuid],
1820                             &softc->sysctl_task);
1821                 }
1822                 softc->state = DA_STATE_NORMAL;
1823                 /*
1824                  * Since our peripheral may be invalidated by an error
1825                  * above or an external event, we must release our CCB
1826                  * before releasing the probe lock on the peripheral.
1827                  * The peripheral will only go away once the last lock
1828                  * is removed, and we need it around for the CCB release
1829                  * operation.
1830                  */
1831                 xpt_release_ccb(done_ccb);
1832                 cam_periph_unlock(periph);
1833                 return;
1834         }
1835         case DA_CCB_WAITING:
1836         {
1837                 /* Caller will release the CCB */
1838                 wakeup(&done_ccb->ccb_h.cbfcnp);
1839                 return;
1840         }
1841         case DA_CCB_DUMP:
1842                 /* No-op.  We're polling */
1843                 return;
1844         default:
1845                 break;
1846         }
1847         xpt_release_ccb(done_ccb);
1848 }
1849
1850 static int
1851 daerror(union ccb *ccb, u_int32_t cam_flags, u_int32_t sense_flags)
1852 {
1853         struct da_softc   *softc;
1854         struct cam_periph *periph;
1855         int error;
1856
1857         periph = xpt_path_periph(ccb->ccb_h.path);
1858         softc = (struct da_softc *)periph->softc;
1859
1860         /*
1861          * Automatically detect devices that do not support
1862          * READ(6)/WRITE(6) and upgrade to using 10 byte cdbs.
1863          */
1864         error = 0;
1865         if ((ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_INVALID) {
1866                 error = cmd6workaround(ccb);
1867         } else if (((ccb->ccb_h.status & CAM_STATUS_MASK) ==
1868                    CAM_SCSI_STATUS_ERROR)
1869          && (ccb->ccb_h.status & CAM_AUTOSNS_VALID)
1870          && (ccb->csio.scsi_status == SCSI_STATUS_CHECK_COND)
1871          && ((ccb->ccb_h.flags & CAM_SENSE_PHYS) == 0)
1872          && ((ccb->ccb_h.flags & CAM_SENSE_PTR) == 0)) {
1873                 int sense_key, error_code, asc, ascq;
1874
1875                 scsi_extract_sense(&ccb->csio.sense_data,
1876                                    &error_code, &sense_key, &asc, &ascq);
1877                 if (sense_key == SSD_KEY_ILLEGAL_REQUEST)
1878                         error = cmd6workaround(ccb);
1879         }
1880         if (error == ERESTART)
1881                 return (ERESTART);
1882
1883         /*
1884          * XXX
1885          * Until we have a better way of doing pack validation,
1886          * don't treat UAs as errors.
1887          */
1888         sense_flags |= SF_RETRY_UA;
1889         return(cam_periph_error(ccb, cam_flags, sense_flags,
1890                                 &softc->saved_ccb));
1891 }
1892
1893 static void
1894 daprevent(struct cam_periph *periph, int action)
1895 {
1896         struct  da_softc *softc;
1897         union   ccb *ccb;
1898         int     error;
1899
1900         softc = (struct da_softc *)periph->softc;
1901
1902         if (((action == PR_ALLOW)
1903           && (softc->flags & DA_FLAG_PACK_LOCKED) == 0)
1904          || ((action == PR_PREVENT)
1905           && (softc->flags & DA_FLAG_PACK_LOCKED) != 0)) {
1906                 return;
1907         }
1908
1909         ccb = cam_periph_getccb(periph, /*priority*/1);
1910
1911         scsi_prevent(&ccb->csio,
1912                      /*retries*/1,
1913                      /*cbcfp*/dadone,
1914                      MSG_SIMPLE_Q_TAG,
1915                      action,
1916                      SSD_FULL_SIZE,
1917                      5000);
1918
1919         error = cam_periph_runccb(ccb, /*error_routine*/NULL, /*cam_flags*/0,
1920                                   /*sense_flags*/0, &softc->device_stats);
1921
1922         if (error == 0) {
1923                 if (action == PR_ALLOW)
1924                         softc->flags &= ~DA_FLAG_PACK_LOCKED;
1925                 else
1926                         softc->flags |= DA_FLAG_PACK_LOCKED;
1927         }
1928
1929         xpt_release_ccb(ccb);
1930 }
1931
1932 static int
1933 dagetcapacity(struct cam_periph *periph)
1934 {
1935         struct da_softc *softc;
1936         union ccb *ccb;
1937         struct scsi_read_capacity_data *rcap;
1938         struct scsi_read_capacity_data_long *rcaplong;
1939         uint32_t block_len;
1940         uint64_t maxsector;
1941         int error;
1942
1943         softc = (struct da_softc *)periph->softc;
1944         block_len = 0;
1945         maxsector = 0;
1946         error = 0;
1947
1948         /* Do a read capacity */
1949         rcap = (void *)kmalloc(sizeof(*rcaplong), M_TEMP, M_INTWAIT);
1950
1951         ccb = cam_periph_getccb(periph, /*priority*/1);
1952         scsi_read_capacity(&ccb->csio,
1953                            /*retries*/4,
1954                            /*cbfncp*/dadone,
1955                            MSG_SIMPLE_Q_TAG,
1956                            rcap,
1957                            SSD_FULL_SIZE,
1958                            /*timeout*/60000);
1959         ccb->ccb_h.ccb_bio = NULL;
1960
1961         error = cam_periph_runccb(ccb, daerror,
1962                                   /*cam_flags*/SF_RETRY_SELTO,
1963                                   /*sense_flags*/SF_RETRY_UA,
1964                                   &softc->device_stats);
1965
1966         if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
1967                 cam_release_devq(ccb->ccb_h.path,
1968                                  /*relsim_flags*/0,
1969                                  /*reduction*/0,
1970                                  /*timeout*/0,
1971                                  /*getcount_only*/0);
1972
1973         if (error == 0) {
1974                 block_len = scsi_4btoul(rcap->length);
1975                 maxsector = scsi_4btoul(rcap->addr);
1976
1977                 if (maxsector != 0xffffffff)
1978                         goto done;
1979         } else
1980                 goto done;
1981
1982         rcaplong = (struct scsi_read_capacity_data_long *)rcap;
1983
1984         scsi_read_capacity_16(&ccb->csio,
1985                               /*retries*/ 4,
1986                               /*cbfcnp*/ dadone,
1987                               /*tag_action*/ MSG_SIMPLE_Q_TAG,
1988                               /*lba*/ 0,
1989                               /*reladr*/ 0,
1990                               /*pmi*/ 0,
1991                               rcaplong,
1992                               /*sense_len*/ SSD_FULL_SIZE,
1993                               /*timeout*/ 60000);
1994         ccb->ccb_h.ccb_bio = NULL;
1995
1996         error = cam_periph_runccb(ccb, daerror,
1997                                   /*cam_flags*/SF_RETRY_SELTO,
1998                                   /*sense_flags*/SF_RETRY_UA,
1999                                   &softc->device_stats);
2000
2001         if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
2002                 cam_release_devq(ccb->ccb_h.path,
2003                                  /*relsim_flags*/0,
2004                                  /*reduction*/0,
2005                                  /*timeout*/0,
2006                                  /*getcount_only*/0);
2007
2008         if (error == 0) {
2009                 block_len = scsi_4btoul(rcaplong->length);
2010                 maxsector = scsi_8btou64(rcaplong->addr);
2011         }
2012
2013 done:
2014
2015         if (error == 0)
2016                 dasetgeom(periph, block_len, maxsector);
2017
2018         xpt_release_ccb(ccb);
2019
2020         kfree(rcap, M_TEMP);
2021
2022         return (error);
2023 }
2024
2025 static void
2026 dasetgeom(struct cam_periph *periph, uint32_t block_len, uint64_t maxsector)
2027 {
2028         struct ccb_calc_geometry ccg;
2029         struct da_softc *softc;
2030         struct disk_params *dp;
2031
2032         softc = (struct da_softc *)periph->softc;
2033
2034         dp = &softc->params;
2035         dp->secsize = block_len;
2036         dp->sectors = maxsector + 1;
2037         /*
2038          * Have the controller provide us with a geometry
2039          * for this disk.  The only time the geometry
2040          * matters is when we boot and the controller
2041          * is the only one knowledgeable enough to come
2042          * up with something that will make this a bootable
2043          * device.
2044          */
2045         xpt_setup_ccb(&ccg.ccb_h, periph->path, /*priority*/1);
2046         ccg.ccb_h.func_code = XPT_CALC_GEOMETRY;
2047         ccg.block_size = dp->secsize;
2048         ccg.volume_size = dp->sectors;
2049         ccg.heads = 0;
2050         ccg.secs_per_track = 0;
2051         ccg.cylinders = 0;
2052         xpt_action((union ccb*)&ccg);
2053         dp->heads = ccg.heads;
2054         dp->secs_per_track = ccg.secs_per_track;
2055         dp->cylinders = ccg.cylinders;
2056 }
2057
2058 static void
2059 dasendorderedtag(void *arg)
2060 {
2061         struct da_softc *softc;
2062
2063         for (softc = SLIST_FIRST(&softc_list);
2064              softc != NULL;
2065              softc = SLIST_NEXT(softc, links)) {
2066                 crit_enter();
2067                 if ((softc->ordered_tag_count == 0)
2068                  && ((softc->flags & DA_FLAG_WENT_IDLE) == 0)) {
2069                         softc->flags |= DA_FLAG_NEED_OTAG;
2070                 }
2071                 if (softc->device_stats.busy_count > 0)
2072                         softc->flags &= ~DA_FLAG_WENT_IDLE;
2073
2074                 softc->ordered_tag_count = 0;
2075                 crit_exit();
2076         }
2077         /* Queue us up again */
2078         callout_reset(&dasendorderedtag_ch,
2079             (da_default_timeout * hz) / DA_ORDEREDTAG_INTERVAL,
2080             dasendorderedtag, NULL);
2081 }
2082
2083 /*
2084  * Step through all DA peripheral drivers, and if the device is still open,
2085  * sync the disk cache to physical media.
2086  */
2087 static void
2088 dashutdown(void * arg, int howto)
2089 {
2090         struct cam_periph *periph;
2091         struct da_softc *softc;
2092
2093         TAILQ_FOREACH(periph, &dadriver.units, unit_links) {
2094                 union ccb ccb;
2095
2096                 softc = (struct da_softc *)periph->softc;
2097
2098                 /*
2099                  * We only sync the cache if the drive is still open, and
2100                  * if the drive is capable of it..
2101                  */
2102                 if (((softc->flags & DA_FLAG_OPEN) == 0)
2103                  || (softc->quirks & DA_Q_NO_SYNC_CACHE))
2104                         continue;
2105
2106                 xpt_setup_ccb(&ccb.ccb_h, periph->path, /*priority*/1);
2107
2108                 ccb.ccb_h.ccb_state = DA_CCB_DUMP;
2109                 scsi_synchronize_cache(&ccb.csio,
2110                                        /*retries*/1,
2111                                        /*cbfcnp*/dadone,
2112                                        MSG_SIMPLE_Q_TAG,
2113                                        /*begin_lba*/0, /* whole disk */
2114                                        /*lb_count*/0,
2115                                        SSD_FULL_SIZE,
2116                                        5 * 60 * 1000);
2117
2118                 xpt_polled_action(&ccb);
2119
2120                 if ((ccb.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
2121                         if (((ccb.ccb_h.status & CAM_STATUS_MASK) ==
2122                              CAM_SCSI_STATUS_ERROR)
2123                          && (ccb.csio.scsi_status == SCSI_STATUS_CHECK_COND)){
2124                                 int error_code, sense_key, asc, ascq;
2125
2126                                 scsi_extract_sense(&ccb.csio.sense_data,
2127                                                    &error_code, &sense_key,
2128                                                    &asc, &ascq);
2129
2130                                 if (sense_key != SSD_KEY_ILLEGAL_REQUEST)
2131                                         scsi_sense_print(&ccb.csio);
2132                         } else {
2133                                 xpt_print_path(periph->path);
2134                                 kprintf("Synchronize cache failed, status "
2135                                        "== 0x%x, scsi status == 0x%x\n",
2136                                        ccb.ccb_h.status, ccb.csio.scsi_status);
2137                         }
2138                 }
2139
2140                 if ((ccb.ccb_h.status & CAM_DEV_QFRZN) != 0)
2141                         cam_release_devq(ccb.ccb_h.path,
2142                                          /*relsim_flags*/0,
2143                                          /*reduction*/0,
2144                                          /*timeout*/0,
2145                                          /*getcount_only*/0);
2146
2147         }
2148 }
2149
2150 #else /* !_KERNEL */
2151
2152 /*
2153  * XXX This is only left out of the kernel build to silence warnings.  If,
2154  * for some reason this function is used in the kernel, the ifdefs should
2155  * be moved so it is included both in the kernel and userland.
2156  */
2157 void
2158 scsi_format_unit(struct ccb_scsiio *csio, u_int32_t retries,
2159                  void (*cbfcnp)(struct cam_periph *, union ccb *),
2160                  u_int8_t tag_action, u_int8_t byte2, u_int16_t ileave,
2161                  u_int8_t *data_ptr, u_int32_t dxfer_len, u_int8_t sense_len,
2162                  u_int32_t timeout)
2163 {
2164         struct scsi_format_unit *scsi_cmd;
2165
2166         scsi_cmd = (struct scsi_format_unit *)&csio->cdb_io.cdb_bytes;
2167         scsi_cmd->opcode = FORMAT_UNIT;
2168         scsi_cmd->byte2 = byte2;
2169         scsi_ulto2b(ileave, scsi_cmd->interleave);
2170
2171         cam_fill_csio(csio,
2172                       retries,
2173                       cbfcnp,
2174                       /*flags*/ (dxfer_len > 0) ? CAM_DIR_OUT : CAM_DIR_NONE,
2175                       tag_action,
2176                       data_ptr,
2177                       dxfer_len,
2178                       sense_len,
2179                       sizeof(*scsi_cmd),
2180                       timeout);
2181 }
2182
2183 #endif /* _KERNEL */