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 1.48 2007/11/25 04:42:38 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         int      outstanding_cmds;
 146         struct   disk_params params;
 147         struct   disk disk;
 148         union    ccb saved_ccb;
 149         struct task             sysctl_task;
 150         struct sysctl_ctx_list  sysctl_ctx;
 151         struct sysctl_oid       *sysctl_tree;
 152 };
 153
 154 struct da_quirk_entry {
 155         struct scsi_inquiry_pattern inq_pat;
 156         da_quirks quirks;
 157 };
 158
 159 static const char quantum[] = "QUANTUM";
 160 static const char microp[] = "MICROP";
 161
 162 static struct da_quirk_entry da_quirk_table[] =
 163 {
 164         /* SPI, FC devices */
 165         {
 166                 /*
 167                  * Fujitsu M2513A MO drives.
 168                  * Tested devices: M2513A2 firmware versions 1200 & 1300.
 169                  * (dip switch selects whether T_DIRECT or T_OPTICAL device)
 170                  * Reported by: W.Scholten <whs@xs4all.nl>
 171                  */
 172                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "FUJITSU", "M2513A", "*"},
 173                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 174         },
 175         {
 176                 /* See above. */
 177                 {T_OPTICAL, SIP_MEDIA_REMOVABLE, "FUJITSU", "M2513A", "*"},
 178                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 179         },
 180         {
 181                 /*
 182                  * This particular Fujitsu drive doesn't like the
 183                  * synchronize cache command.
 184                  * Reported by: Tom Jackson <toj@gorilla.net>
 185                  */
 186                 {T_DIRECT, SIP_MEDIA_FIXED, "FUJITSU", "M2954*", "*"},
 187                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 188
 189         },
 190         {
 191                 /*
 192                  * This drive doesn't like the synchronize cache command
 193                  * either.  Reported by: Matthew Jacob <mjacob@feral.com>
 194                  * in NetBSD PR kern/6027, August 24, 1998.
 195                  */
 196                 {T_DIRECT, SIP_MEDIA_FIXED, microp, "2217*", "*"},
 197                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 198         },
 199         {
 200                 /*
 201                  * This drive doesn't like the synchronize cache command
 202                  * either.  Reported by: Hellmuth Michaelis (hm@kts.org)
 203                  * (PR 8882).
 204                  */
 205                 {T_DIRECT, SIP_MEDIA_FIXED, microp, "2112*", "*"},
 206                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 207         },
 208         {
 209                 /*
 210                  * Doesn't like the synchronize cache command.
 211                  * Reported by: Blaz Zupan <blaz@gold.amis.net>
 212                  */
 213                 {T_DIRECT, SIP_MEDIA_FIXED, "NEC", "D3847*", "*"},
 214                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 215         },
 216         {
 217                 /*
 218                  * Doesn't like the synchronize cache command.
 219                  */
 220                 {T_DIRECT, SIP_MEDIA_FIXED, quantum, "MAVERICK 540S", "*"},
 221                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 222         },
 223         {
 224                 /*
 225                  * Doesn't like the synchronize cache command.
 226                  */
 227                 {T_DIRECT, SIP_MEDIA_FIXED, quantum, "LPS525S", "*"},
 228                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 229         },
 230         {
 231                 /*
 232                  * Doesn't work correctly with 6 byte reads/writes.
 233                  * Returns illegal request, and points to byte 9 of the
 234                  * 6-byte CDB.
 235                  * Reported by:  Adam McDougall <bsdx@spawnet.com>
 236                  */
 237                 {T_DIRECT, SIP_MEDIA_FIXED, quantum, "VIKING 4*", "*"},
 238                 /*quirks*/ DA_Q_NO_6_BYTE
 239         },
 240         {
 241                 /* See above. */
 242                 {T_DIRECT, SIP_MEDIA_FIXED, quantum, "VIKING 2*", "*"},
 243                 /*quirks*/ DA_Q_NO_6_BYTE
 244         },
 245         /* XXX USB floppy quirks temporarily enabled for 4.9R */
 246         /* USB floppy devices supported by umass(4) */
 247         {
 248                 /*
 249                  * This USB floppy drive uses the UFI command set. This
 250                  * command set is a derivative of the ATAPI command set and
 251                  * does not support READ_6 commands only READ_10. It also does
 252                  * not support sync cache (0x35).
 253                  */
 254                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Y-E DATA", "USB-FDU", "*"},
 255                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 256         },
 257         {
 258                 /* Another USB floppy */
 259                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "MATSHITA", "FDD CF-VFDU*","*"},
 260                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 261         },
 262         {
 263                 /*
 264                  * The vendor, product and version strings coming from the
 265                  * controller are null terminated instead of being padded with
 266                  * spaces. The trailing wildcard character '*' is required.
 267                  */
 268                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "SMSC*", "USB FDC*","*"},
 269                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 270         },
 271         {
 272                 /*
 273                  * SmartDisk (Mitsumi) USB floppy drive
 274                  * PR: kern/50226
 275                  */
 276                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "MITSUMI", "USB FDD", "*"},
 277                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 278         },
 279         {
 280                 /*
 281                  * The CISS RAID controllers do not support SYNC_CACHE
 282                  */
 283                 {T_DIRECT, SIP_MEDIA_FIXED, "COMPAQ", "RAID*", "*"},
 284                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 285         },
 286 #ifdef DA_OLD_QUIRKS
 287         /* USB mass storage devices supported by umass(4) */
 288         {
 289                 /*
 290                  * Sony Memory Stick adapter MSAC-US1 and
 291                  * Sony PCG-C1VJ Internal Memory Stick Slot (MSC-U01).
 292                  * Make all sony MS* products use this quirk.
 293                  */
 294                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Sony", "MS*", "*"},
 295                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 296         },
 297         {
 298                 /*
 299                  * Sony Memory Stick adapter for the CLIE series
 300                  * of PalmOS PDA's
 301                  */
 302                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Sony", "CLIE*", "*"},
 303                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 304         },
 305         {
 306                 /*
 307                  * Intelligent Stick USB disk-on-key
 308                  * PR: kern/53005
 309                  */
 310                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "USB Card",
 311                  "IntelligentStick*", "*"},
 312                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 313         },
 314         {
 315                 /*
 316                  * Sony DSC cameras (DSC-S30, DSC-S50, DSC-S70)
 317                  */
 318                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Sony", "Sony DSC", "*"},
 319                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 320         },
 321         {
 322                 /*
 323                  * Microtech USB CameraMate
 324                  */
 325                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "eUSB    Compact*",
 326                  "Compact Flash*", "*"},
 327                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 328         },
 329         {
 330                 /*
 331                  * Olympus digital cameras (C-3040ZOOM, C-2040ZOOM, C-1)
 332                  */
 333                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "OLYMPUS", "C-*", "*"},
 334                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 335         },
 336         {
 337                 /*
 338                  * Olympus digital cameras (E-100RS, E-10).
 339                  */
 340                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "OLYMPUS", "E-*", "*"},
 341                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 342         },
 343         {
 344                 /*
 345                  * KingByte Pen Drives
 346                  */
 347                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "NO BRAND", "PEN DRIVE", "*"},
 348                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 349         },
 350         {
 351                 /*
 352                  * iRiver iFP MP3 player (with UMS Firmware)
 353                  * PR: kern/54881, i386/63941, kern/66124
 354                  */
 355                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "iRiver", "iFP*", "*"},
 356                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 357         },
 358         {
 359                 /*
 360                  * Frontier Labs NEX IA+ Digital Audio Player, rev 1.10/0.01
 361                  * PR: kern/70158
 362                  */
 363                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "FL" , "NexIA+*", "*"},
 364                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 365         },
 366         {
 367                 /*
 368                  * FujiFilm Camera
 369                  */
 370                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "FUJIFILMUSB-DRIVEUNIT",
 371                  "USB-DRIVEUNIT", "*"},
 372                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 373         },
 374         {
 375                 /*
 376                  * Minolta Dimage E203
 377                  */
 378                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "MINOLTA", "DiMAGE E203", "*"},
 379                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 380         },
 381         {
 382                 /*
 383                  * Apacer HandyDrive
 384                  * PR: kern/43627
 385                  */
 386                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Apacer", "HandyDrive", "*"},
 387                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 388         },
 389         {
 390                 /*
 391                  * Daisy Technology PhotoClip on Zoran chip
 392                  * PR: kern/43580
 393                  */
 394                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "ZORAN", "COACH", "*"},
 395                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 396         },
 397         {
 398                 /*
 399                  * Sony USB Key-Storage
 400                  * PR: kern/46386
 401                  */
 402                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Sony", "Storage Media", "*"},
 403                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 404         },
 405 #endif /* DA_OLD_QUIRKS */
 406         {
 407                 /*
 408                  * EXATELECOM (Sigmatel) i-Bead 100/105 USB Flash MP3 Player
 409                  * PR: kern/51675
 410                  */
 411                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "EXATEL", "i-BEAD10*", "*"},
 412                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 413         },
 414         {
 415                 /*
 416                  * Jungsoft NEXDISK USB flash key
 417                  * PR: kern/54737
 418                  */
 419                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "JUNGSOFT", "NEXDISK*", "*"},
 420                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 421         },
 422         {
 423                 /*
 424                  * Creative Nomad MUVO mp3 player (USB)
 425                  * PR: kern/53094
 426                  */
 427                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "CREATIVE", "NOMAD_MUVO", "*"},
 428                 /*quirks*/ DA_Q_NO_SYNC_CACHE|DA_Q_NO_PREVENT
 429         },
 430 };
 431
 432 static  d_open_t        daopen;
 433 static  d_close_t       daclose;
 434 static  d_strategy_t    dastrategy;
 435 static  d_ioctl_t       daioctl;
 436 static  d_dump_t        dadump;
 437 static  periph_init_t   dainit;
 438 static  void            daasync(void *callback_arg, u_int32_t code,
 439                                 struct cam_path *path, void *arg);
 440 static  int             dacmdsizesysctl(SYSCTL_HANDLER_ARGS);
 441 static  periph_ctor_t   daregister;
 442 static  periph_dtor_t   dacleanup;
 443 static  periph_start_t  dastart;
 444 static  periph_oninv_t  daoninvalidate;
 445 static  void            dadone(struct cam_periph *periph,
 446                                union ccb *done_ccb);
 447 static  int             daerror(union ccb *ccb, u_int32_t cam_flags,
 448                                 u_int32_t sense_flags);
 449 static void             daprevent(struct cam_periph *periph, int action);
 450 static int              dagetcapacity(struct cam_periph *periph);
 451 static void             dasetgeom(struct cam_periph *periph, uint32_t block_len,
 452                                   uint64_t maxsector);
 453
 454 static timeout_t        dasendorderedtag;
 455 static void             dashutdown(void *arg, int howto);
 456
 457 #ifndef DA_DEFAULT_TIMEOUT
 458 #define DA_DEFAULT_TIMEOUT 60   /* Timeout in seconds */
 459 #endif
 460
 461 #ifndef DA_DEFAULT_RETRY
 462 #define DA_DEFAULT_RETRY        4
 463 #endif
 464
 465 static int da_retry_count = DA_DEFAULT_RETRY;
 466 static int da_default_timeout = DA_DEFAULT_TIMEOUT;
 467 static struct callout dasendorderedtag_ch;
 468
 469 SYSCTL_NODE(_kern_cam, OID_AUTO, da, CTLFLAG_RD, 0,
 470             "CAM Direct Access Disk driver");
 471 SYSCTL_INT(_kern_cam_da, OID_AUTO, retry_count, CTLFLAG_RW,
 472            &da_retry_count, 0, "Normal I/O retry count");
 473 TUNABLE_INT("kern.cam.da.retry_count", &da_retry_count);
 474 SYSCTL_INT(_kern_cam_da, OID_AUTO, default_timeout, CTLFLAG_RW,
 475            &da_default_timeout, 0, "Normal I/O timeout (in seconds)");
 476 TUNABLE_INT("kern.cam.da.default_timeout", &da_default_timeout);
 477
 478 /*
 479  * DA_ORDEREDTAG_INTERVAL determines how often, relative
 480  * to the default timeout, we check to see whether an ordered
 481  * tagged transaction is appropriate to prevent simple tag
 482  * starvation.  Since we'd like to ensure that there is at least
 483  * 1/2 of the timeout length left for a starved transaction to
 484  * complete after we've sent an ordered tag, we must poll at least
 485  * four times in every timeout period.  This takes care of the worst
 486  * case where a starved transaction starts during an interval that
 487  * meets the requirement "don't send an ordered tag" test so it takes
 488  * us two intervals to determine that a tag must be sent.
 489  */
 490 #ifndef DA_ORDEREDTAG_INTERVAL
 491 #define DA_ORDEREDTAG_INTERVAL 4
 492 #endif
 493
 494 static struct periph_driver dadriver =
 495 {
 496         dainit, "da",
 497         TAILQ_HEAD_INITIALIZER(dadriver.units), /* generation */ 0
 498 };
 499
 500 PERIPHDRIVER_DECLARE(da, dadriver);
 501
 502 /* For 2.2-stable support */
 503 #ifndef D_DISK
 504 #define D_DISK 0
 505 #endif
 506
 507 static struct dev_ops da_ops = {
 508         { "da", DA_CDEV_MAJOR, D_DISK },
 509         .d_open =       daopen,
 510         .d_close =      daclose,
 511         .d_read =       physread,
 512         .d_write =      physwrite,
 513         .d_ioctl =      daioctl,
 514         .d_strategy =   dastrategy,
 515         .d_dump =       dadump
 516 };
 517
 518 static SLIST_HEAD(,da_softc) softc_list;
 519 static struct extend_array *daperiphs;
 520
 521 static int
 522 daopen(struct dev_open_args *ap)
 523 {
 524         cdev_t dev = ap->a_head.a_dev;
 525         struct cam_periph *periph;
 526         struct da_softc *softc;
 527         struct disk_info info;
 528         int unit;
 529         int error;
 530
 531         unit = dkunit(dev);
 532         crit_enter();
 533         periph = cam_extend_get(daperiphs, unit);
 534         if (periph == NULL) {
 535                 crit_exit();
 536                 return (ENXIO);
 537         }
 538
 539         softc = (struct da_softc *)periph->softc;
 540
 541         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE,
 542             ("daopen: dev=%s (unit %d)\n", devtoname(dev),
 543              unit));
 544
 545         if ((error = cam_periph_lock(periph, PCATCH)) != 0) {
 546                 crit_exit();
 547                 return (error); /* error code from tsleep */
 548         }
 549
 550         if ((softc->flags & DA_FLAG_OPEN) == 0) {
 551                 if (cam_periph_acquire(periph) != CAM_REQ_CMP) {
 552                         crit_exit();
 553                         return(ENXIO);
 554                 }
 555                 softc->flags |= DA_FLAG_OPEN;
 556         }
 557
 558         if ((softc->flags & DA_FLAG_PACK_INVALID) != 0) {
 559                 /* Invalidate our pack information. */
 560                 disk_invalidate(&softc->disk);
 561                 softc->flags &= ~DA_FLAG_PACK_INVALID;
 562         }
 563         crit_exit();
 564
 565         error = dagetcapacity(periph);
 566
 567 #if 0
 568         /* Do a read capacity */
 569         {
 570                 struct scsi_read_capacity_data *rcap;
 571                 union  ccb *ccb;
 572
 573                 rcap = kmalloc(sizeof(*rcap), M_TEMP, M_INTWAIT | M_ZERO);
 574
 575                 ccb = cam_periph_getccb(periph, /*priority*/1);
 576                 scsi_read_capacity(&ccb->csio,
 577                                    /*retries*/1,
 578                                    /*cbfncp*/dadone,
 579                                    MSG_SIMPLE_Q_TAG,
 580                                    rcap,
 581                                    SSD_FULL_SIZE,
 582                                    /*timeout*/60000);
 583                 ccb->ccb_h.ccb_bio = NULL;
 584
 585                 error = cam_periph_runccb(ccb, daerror, /*cam_flags*/0,
 586                                           /*sense_flags*/SF_RETRY_UA |
 587                                                          SF_RETRY_SELTO,
 588                                           &softc->device_stats);
 589
 590                 xpt_release_ccb(ccb);
 591
 592                 if (error == 0) {
 593                         dasetgeom(periph, rcap);
 594                 }
 595
 596                 kfree(rcap, M_TEMP);
 597         }
 598 #endif
 599
 600         if (error == 0) {
 601                 struct ccb_getdev cgd;
 602
 603                 /* Build disk information structure */
 604                 bzero(&info, sizeof(info));
 605                 info.d_type = DTYPE_SCSI;
 606
 607                 /*
 608                  * Grab the inquiry data to get the vendor and product names.
 609                  * Put them in the typename and packname for the label.
 610                  */
 611                 xpt_setup_ccb(&cgd.ccb_h, periph->path, /*priority*/ 1);
 612                 cgd.ccb_h.func_code = XPT_GDEV_TYPE;
 613                 xpt_action((union ccb *)&cgd);
 614
 615 #if 0
 616                 strncpy(label->d_typename, cgd.inq_data.vendor,
 617                         min(SID_VENDOR_SIZE, sizeof(label->d_typename)));
 618                 strncpy(label->d_packname, cgd.inq_data.product,
 619                         min(SID_PRODUCT_SIZE, sizeof(label->d_packname)));
 620 #endif
 621
 622                 /*
 623                  * Mandatory fields
 624                  */
 625                 info.d_media_blksize = softc->params.secsize;
 626                 info.d_media_blocks = softc->params.sectors;
 627                 info.d_media_size = 0;
 628
 629                 /*
 630                  * Optional fields
 631                  */
 632                 info.d_secpertrack = softc->params.secs_per_track;
 633                 info.d_nheads = softc->params.heads;
 634                 info.d_ncylinders = softc->params.cylinders;
 635                 info.d_secpercyl = softc->params.heads *
 636                                    softc->params.secs_per_track;
 637                 disk_setdiskinfo(&softc->disk, &info);
 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_PREVENT);
 654         } else {
 655                 softc->flags &= ~DA_FLAG_OPEN;
 656                 cam_periph_release(periph);
 657         }
 658         cam_periph_unlock(periph);
 659         return (error);
 660 }
 661
 662 static int
 663 daclose(struct dev_close_args *ap)
 664 {
 665         cdev_t dev = ap->a_head.a_dev;
 666         struct  cam_periph *periph;
 667         struct  da_softc *softc;
 668         int     unit;
 669         int     error;
 670
 671         unit = dkunit(dev);
 672         periph = cam_extend_get(daperiphs, unit);
 673         if (periph == NULL)
 674                 return (ENXIO);
 675
 676         softc = (struct da_softc *)periph->softc;
 677
 678         if ((error = cam_periph_lock(periph, 0)) != 0) {
 679                 return (error); /* error code from tsleep */
 680         }
 681
 682         if ((softc->quirks & DA_Q_NO_SYNC_CACHE) == 0) {
 683                 union   ccb *ccb;
 684
 685                 ccb = cam_periph_getccb(periph, /*priority*/1);
 686
 687                 scsi_synchronize_cache(&ccb->csio,
 688                                        /*retries*/1,
 689                                        /*cbfcnp*/dadone,
 690                                        MSG_SIMPLE_Q_TAG,
 691                                        /*begin_lba*/0,/* Cover the whole disk */
 692                                        /*lb_count*/0,
 693                                        SSD_FULL_SIZE,
 694                                        5 * 60 * 1000);
 695
 696                 cam_periph_runccb(ccb, /*error_routine*/NULL, /*cam_flags*/0,
 697                                   /*sense_flags*/SF_RETRY_UA,
 698                                   &softc->device_stats);
 699
 700                 if ((ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
 701                         if ((ccb->ccb_h.status & CAM_STATUS_MASK) ==
 702                              CAM_SCSI_STATUS_ERROR) {
 703                                 int asc, ascq;
 704                                 int sense_key, error_code;
 705
 706                                 scsi_extract_sense(&ccb->csio.sense_data,
 707                                                    &error_code,
 708                                                    &sense_key,
 709                                                    &asc, &ascq);
 710                                 if (sense_key != SSD_KEY_ILLEGAL_REQUEST)
 711                                         scsi_sense_print(&ccb->csio);
 712                         } else {
 713                                 xpt_print_path(periph->path);
 714                                 kprintf("Synchronize cache failed, status "
 715                                        "== 0x%x, scsi status == 0x%x\n",
 716                                        ccb->csio.ccb_h.status,
 717                                        ccb->csio.scsi_status);
 718                         }
 719                 }
 720
 721                 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
 722                         cam_release_devq(ccb->ccb_h.path,
 723                                          /*relsim_flags*/0,
 724                                          /*reduction*/0,
 725                                          /*timeout*/0,
 726                                          /*getcount_only*/0);
 727
 728                 xpt_release_ccb(ccb);
 729
 730         }
 731
 732         if ((softc->flags & DA_FLAG_PACK_REMOVABLE) != 0) {
 733                 if ((softc->quirks & DA_Q_NO_PREVENT) == 0)
 734                         daprevent(periph, PR_ALLOW);
 735                 /*
 736                  * If we've got removeable media, mark the blocksize as
 737                  * unavailable, since it could change when new media is
 738                  * inserted.
 739                  */
 740                 softc->device_stats.flags |= DEVSTAT_BS_UNAVAILABLE;
 741         }
 742
 743         /*
 744          * Don't compound any ref counting software bugs with more.
 745          */
 746         if (softc->flags & DA_FLAG_OPEN) {
 747                 softc->flags &= ~DA_FLAG_OPEN;
 748                 cam_periph_release(periph);
 749         } else {
 750                 xpt_print_path(periph->path);
 751                 kprintf("daclose() called on an already closed device!\n");
 752         }
 753         cam_periph_unlock(periph);
 754         return (0);
 755 }
 756
 757 /*
 758  * Actually translate the requested transfer into one the physical driver
 759  * can understand.  The transfer is described by a buf and will include
 760  * only one physical transfer.
 761  */
 762 static int
 763 dastrategy(struct dev_strategy_args *ap)
 764 {
 765         cdev_t dev = ap->a_head.a_dev;
 766         struct bio *bio = ap->a_bio;
 767         struct buf *bp = bio->bio_buf;
 768         struct cam_periph *periph;
 769         struct da_softc *softc;
 770         u_int  unit;
 771         u_int  part;
 772
 773         unit = dkunit(dev);
 774         part = dkpart(dev);
 775         periph = cam_extend_get(daperiphs, unit);
 776         if (periph == NULL) {
 777                 bp->b_error = ENXIO;
 778                 goto bad;
 779         }
 780         softc = (struct da_softc *)periph->softc;
 781 #if 0
 782         /*
 783          * check it's not too big a transfer for our adapter
 784          */
 785         scsi_minphys(bp, &sd_switch);
 786 #endif
 787
 788         /*
 789          * Mask interrupts so that the pack cannot be invalidated until
 790          * after we are in the queue.  Otherwise, we might not properly
 791          * clean up one of the buffers.
 792          */
 793         crit_enter();
 794
 795         /*
 796          * If the device has been made invalid, error out
 797          */
 798         if ((softc->flags & DA_FLAG_PACK_INVALID)) {
 799                 crit_exit();
 800                 bp->b_error = ENXIO;
 801                 goto bad;
 802         }
 803
 804         /*
 805          * Place it in the queue of disk activities for this disk
 806          */
 807         bioqdisksort(&softc->bio_queue, bio);
 808
 809         crit_exit();
 810
 811         /*
 812          * Schedule ourselves for performing the work.
 813          */
 814         xpt_schedule(periph, /* XXX priority */1);
 815
 816         return(0);
 817 bad:
 818         bp->b_flags |= B_ERROR;
 819
 820         /*
 821          * Correctly set the buf to indicate a completed xfer
 822          */
 823         bp->b_resid = bp->b_bcount;
 824         biodone(bio);
 825         return(0);
 826 }
 827
 828 /* For 2.2-stable support */
 829 #ifndef ENOIOCTL
 830 #define ENOIOCTL -1
 831 #endif
 832
 833 static int
 834 daioctl(struct dev_ioctl_args *ap)
 835 {
 836         cdev_t dev = ap->a_head.a_dev;
 837         struct cam_periph *periph;
 838         struct da_softc *softc;
 839         int unit;
 840         int error;
 841
 842         unit = dkunit(dev);
 843         periph = cam_extend_get(daperiphs, unit);
 844         if (periph == NULL)
 845                 return (ENXIO);
 846
 847         softc = (struct da_softc *)periph->softc;
 848
 849         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("daioctl\n"));
 850
 851         if ((error = cam_periph_lock(periph, PCATCH)) != 0) {
 852                 return (error); /* error code from tsleep */
 853         }
 854
 855         error = cam_periph_ioctl(periph, ap->a_cmd, ap->a_data, daerror);
 856
 857         cam_periph_unlock(periph);
 858
 859         return (error);
 860 }
 861
 862 static int
 863 dadump(struct dev_dump_args *ap)
 864 {
 865         cdev_t dev = ap->a_head.a_dev;
 866         struct      cam_periph *periph;
 867         struct      da_softc *softc;
 868         u_int       unit;
 869         long        blkcnt;
 870         vm_paddr_t  addr;
 871         struct      ccb_scsiio csio;
 872         int         dumppages = MAXDUMPPGS;
 873         int         i;
 874
 875         /* toss any characters present prior to dump */
 876         while (cncheckc() != -1)
 877                 ;
 878
 879         unit = dkunit(dev);
 880         periph = cam_extend_get(daperiphs, unit);
 881         if (periph == NULL) {
 882                 return (ENXIO);
 883         }
 884         softc = (struct da_softc *)periph->softc;
 885
 886         if ((softc->flags & DA_FLAG_PACK_INVALID) != 0)
 887                 return (ENXIO);
 888
 889         addr = 0;       /* starting address */
 890         blkcnt = howmany(PAGE_SIZE, ap->a_secsize);
 891
 892         while (ap->a_count > 0) {
 893                 caddr_t va = NULL;
 894
 895                 if ((ap->a_count / blkcnt) < dumppages)
 896                         dumppages = ap->a_count / blkcnt;
 897
 898                 for (i = 0; i < dumppages; ++i) {
 899                         vm_paddr_t a = addr + (i * PAGE_SIZE);
 900                         if (is_physical_memory(a))
 901                                 va = pmap_kenter_temporary(trunc_page(a), i);
 902                         else
 903                                 va = pmap_kenter_temporary(trunc_page(0), i);
 904                 }
 905
 906                 xpt_setup_ccb(&csio.ccb_h, periph->path, /*priority*/1);
 907                 csio.ccb_h.ccb_state = DA_CCB_DUMP;
 908                 scsi_read_write(&csio,
 909                                 /*retries*/1,
 910                                 dadone,
 911                                 MSG_ORDERED_Q_TAG,
 912                                 /*read*/FALSE,
 913                                 /*byte2*/0,
 914                                 /*minimum_cmd_size*/ softc->minimum_cmd_size,
 915                                 ap->a_blkno,
 916                                 blkcnt * dumppages,
 917                                 /*data_ptr*/(u_int8_t *) va,
 918                                 /*dxfer_len*/blkcnt * ap->a_secsize * dumppages,
 919                                 /*sense_len*/SSD_FULL_SIZE,
 920                                 DA_DEFAULT_TIMEOUT * 1000);
 921                 xpt_polled_action((union ccb *)&csio);
 922
 923                 if ((csio.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
 924                         kprintf("Aborting dump due to I/O error.\n");
 925                         if ((csio.ccb_h.status & CAM_STATUS_MASK) ==
 926                              CAM_SCSI_STATUS_ERROR)
 927                                 scsi_sense_print(&csio);
 928                         else
 929                                 kprintf("status == 0x%x, scsi status == 0x%x\n",
 930                                        csio.ccb_h.status, csio.scsi_status);
 931                         return(EIO);
 932                 }
 933
 934                 if (dumpstatus(addr, (off_t)ap->a_count * softc->params.secsize) < 0)
 935                         return (EINTR);
 936
 937                 /* update block count */
 938                 ap->a_count -= blkcnt * dumppages;
 939                 ap->a_blkno += blkcnt * dumppages;
 940                 addr += PAGE_SIZE * dumppages;
 941         }
 942
 943         /*
 944          * Sync the disk cache contents to the physical media.
 945          */
 946         if ((softc->quirks & DA_Q_NO_SYNC_CACHE) == 0) {
 947
 948                 xpt_setup_ccb(&csio.ccb_h, periph->path, /*priority*/1);
 949                 csio.ccb_h.ccb_state = DA_CCB_DUMP;
 950                 scsi_synchronize_cache(&csio,
 951                                        /*retries*/1,
 952                                        /*cbfcnp*/dadone,
 953                                        MSG_SIMPLE_Q_TAG,
 954                                        /*begin_lba*/0,/* Cover the whole disk */
 955                                        /*lb_count*/0,
 956                                        SSD_FULL_SIZE,
 957                                        5 * 60 * 1000);
 958                 xpt_polled_action((union ccb *)&csio);
 959
 960                 if ((csio.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
 961                         if ((csio.ccb_h.status & CAM_STATUS_MASK) ==
 962                              CAM_SCSI_STATUS_ERROR) {
 963                                 int asc, ascq;
 964                                 int sense_key, error_code;
 965
 966                                 scsi_extract_sense(&csio.sense_data,
 967                                                    &error_code,
 968                                                    &sense_key,
 969                                                    &asc, &ascq);
 970                                 if (sense_key != SSD_KEY_ILLEGAL_REQUEST)
 971                                         scsi_sense_print(&csio);
 972                         } else {
 973                                 xpt_print_path(periph->path);
 974                                 kprintf("Synchronize cache failed, status "
 975                                        "== 0x%x, scsi status == 0x%x\n",
 976                                        csio.ccb_h.status, csio.scsi_status);
 977                         }
 978                 }
 979         }
 980         return (0);
 981 }
 982
 983 static void
 984 dainit(void)
 985 {
 986         cam_status status;
 987         struct cam_path *path;
 988
 989         /*
 990          * Create our extend array for storing the devices we attach to.
 991          */
 992         daperiphs = cam_extend_new();
 993         SLIST_INIT(&softc_list);
 994         if (daperiphs == NULL) {
 995                 kprintf("da: Failed to alloc extend array!\n");
 996                 return;
 997         }
 998
 999         callout_init(&dasendorderedtag_ch);
1000
1001         /*
1002          * Install a global async callback.  This callback will
1003          * receive async callbacks like "new device found".
1004          */
1005         status = xpt_create_path(&path, /*periph*/NULL, CAM_XPT_PATH_ID,
1006                                  CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD);
1007
1008         if (status == CAM_REQ_CMP) {
1009                 struct ccb_setasync csa;
1010
1011                 xpt_setup_ccb(&csa.ccb_h, path, /*priority*/5);
1012                 csa.ccb_h.func_code = XPT_SASYNC_CB;
1013                 csa.event_enable = AC_FOUND_DEVICE;
1014                 csa.callback = daasync;
1015                 csa.callback_arg = NULL;
1016                 xpt_action((union ccb *)&csa);
1017                 status = csa.ccb_h.status;
1018                 xpt_free_path(path);
1019         }
1020
1021         if (status != CAM_REQ_CMP) {
1022                 kprintf("da: Failed to attach master async callback "
1023                        "due to status 0x%x!\n", status);
1024         } else {
1025
1026                 /*
1027                  * Schedule a periodic event to occasionally send an
1028                  * ordered tag to a device.
1029                  */
1030                 callout_reset(&dasendorderedtag_ch,
1031                     (DA_DEFAULT_TIMEOUT * hz) / DA_ORDEREDTAG_INTERVAL,
1032                     dasendorderedtag, NULL);
1033
1034                 /* Register our shutdown event handler */
1035                 if ((EVENTHANDLER_REGISTER(shutdown_post_sync, dashutdown,
1036                                            NULL, SHUTDOWN_PRI_DEFAULT)) == NULL)
1037                     kprintf("dainit: shutdown event registration failed!\n");
1038         }
1039 }
1040
1041 static void
1042 daoninvalidate(struct cam_periph *periph)
1043 {
1044         struct da_softc *softc;
1045         struct bio *q_bio;
1046         struct buf *q_bp;
1047         struct ccb_setasync csa;
1048
1049         softc = (struct da_softc *)periph->softc;
1050
1051         /*
1052          * De-register any async callbacks.
1053          */
1054         xpt_setup_ccb(&csa.ccb_h, periph->path,
1055                       /* priority */ 5);
1056         csa.ccb_h.func_code = XPT_SASYNC_CB;
1057         csa.event_enable = 0;
1058         csa.callback = daasync;
1059         csa.callback_arg = periph;
1060         xpt_action((union ccb *)&csa);
1061
1062         softc->flags |= DA_FLAG_PACK_INVALID;
1063
1064         /*
1065          * Use a critical section to keep the buffer queue from being
1066          * modified while we traverse it.
1067          */
1068         crit_enter();
1069
1070         /*
1071          * Return all queued I/O with ENXIO.
1072          * XXX Handle any transactions queued to the card
1073          *     with XPT_ABORT_CCB.
1074          */
1075         while ((q_bio = bioq_first(&softc->bio_queue)) != NULL){
1076                 bioq_remove(&softc->bio_queue, q_bio);
1077                 q_bp = q_bio->bio_buf;
1078                 q_bp->b_resid = q_bp->b_bcount;
1079                 q_bp->b_error = ENXIO;
1080                 q_bp->b_flags |= B_ERROR;
1081                 biodone(q_bio);
1082         }
1083         crit_exit();
1084
1085         SLIST_REMOVE(&softc_list, softc, da_softc, links);
1086
1087         xpt_print_path(periph->path);
1088         kprintf("lost device\n");
1089 }
1090
1091 static void
1092 dacleanup(struct cam_periph *periph)
1093 {
1094         struct da_softc *softc;
1095
1096         softc = (struct da_softc *)periph->softc;
1097
1098         devstat_remove_entry(&softc->device_stats);
1099         cam_extend_release(daperiphs, periph->unit_number);
1100         xpt_print_path(periph->path);
1101         kprintf("removing device entry\n");
1102         /*
1103          * If we can't free the sysctl tree, oh well...
1104          */
1105         if ((softc->flags & DA_FLAG_SCTX_INIT) != 0
1106             && sysctl_ctx_free(&softc->sysctl_ctx) != 0) {
1107                 xpt_print_path(periph->path);
1108                 kprintf("can't remove sysctl context\n");
1109         }
1110         if (softc->disk.d_rawdev) {
1111                 disk_destroy(&softc->disk);
1112         }
1113         kfree(softc, M_DEVBUF);
1114 }
1115
1116 static void
1117 daasync(void *callback_arg, u_int32_t code,
1118         struct cam_path *path, void *arg)
1119 {
1120         struct cam_periph *periph;
1121
1122         periph = (struct cam_periph *)callback_arg;
1123         switch (code) {
1124         case AC_FOUND_DEVICE:
1125         {
1126                 struct ccb_getdev *cgd;
1127                 cam_status status;
1128
1129                 cgd = (struct ccb_getdev *)arg;
1130                 if (cgd == NULL)
1131                         break;
1132
1133                 if (SID_TYPE(&cgd->inq_data) != T_DIRECT
1134                     && SID_TYPE(&cgd->inq_data) != T_RBC
1135                     && SID_TYPE(&cgd->inq_data) != T_OPTICAL)
1136                         break;
1137
1138                 /*
1139                  * Allocate a peripheral instance for
1140                  * this device and start the probe
1141                  * process.
1142                  */
1143                 status = cam_periph_alloc(daregister, daoninvalidate,
1144                                           dacleanup, dastart,
1145                                           "da", CAM_PERIPH_BIO,
1146                                           cgd->ccb_h.path, daasync,
1147                                           AC_FOUND_DEVICE, cgd);
1148
1149                 if (status != CAM_REQ_CMP
1150                  && status != CAM_REQ_INPROG)
1151                         kprintf("daasync: Unable to attach to new device "
1152                                 "due to status 0x%x\n", status);
1153                 break;
1154         }
1155         case AC_SENT_BDR:
1156         case AC_BUS_RESET:
1157         {
1158                 struct da_softc *softc;
1159                 struct ccb_hdr *ccbh;
1160
1161                 softc = (struct da_softc *)periph->softc;
1162                 crit_enter();
1163                 /*
1164                  * Don't fail on the expected unit attention
1165                  * that will occur.
1166                  */
1167                 softc->flags |= DA_FLAG_RETRY_UA;
1168                 LIST_FOREACH(ccbh, &softc->pending_ccbs, periph_links.le)
1169                         ccbh->ccb_state |= DA_CCB_RETRY_UA;
1170                 crit_exit();
1171                 /* FALLTHROUGH*/
1172         }
1173         default:
1174                 cam_periph_async(periph, code, path, arg);
1175                 break;
1176         }
1177 }
1178
1179 static void
1180 dasysctlinit(void *context, int pending)
1181 {
1182         struct cam_periph *periph;
1183         struct da_softc *softc;
1184         char tmpstr[80], tmpstr2[80];
1185
1186         periph = (struct cam_periph *)context;
1187         softc = (struct da_softc *)periph->softc;
1188
1189         ksnprintf(tmpstr, sizeof(tmpstr), "CAM DA unit %d", periph->unit_number);
1190         ksnprintf(tmpstr2, sizeof(tmpstr2), "%d", periph->unit_number);
1191
1192         sysctl_ctx_init(&softc->sysctl_ctx);
1193         softc->flags |= DA_FLAG_SCTX_INIT;
1194         softc->sysctl_tree = SYSCTL_ADD_NODE(&softc->sysctl_ctx,
1195                 SYSCTL_STATIC_CHILDREN(_kern_cam_da), OID_AUTO, tmpstr2,
1196                 CTLFLAG_RD, 0, tmpstr);
1197         if (softc->sysctl_tree == NULL) {
1198                 kprintf("dasysctlinit: unable to allocate sysctl tree\n");
1199                 return;
1200         }
1201
1202         /*
1203          * Now register the sysctl handler, so the user can the value on
1204          * the fly.
1205          */
1206         SYSCTL_ADD_PROC(&softc->sysctl_ctx,SYSCTL_CHILDREN(softc->sysctl_tree),
1207                 OID_AUTO, "minimum_cmd_size", CTLTYPE_INT | CTLFLAG_RW,
1208                 &softc->minimum_cmd_size, 0, dacmdsizesysctl, "I",
1209                 "Minimum CDB size");
1210 }
1211
1212 static int
1213 dacmdsizesysctl(SYSCTL_HANDLER_ARGS)
1214 {
1215         int error, value;
1216
1217         value = *(int *)arg1;
1218
1219         error = sysctl_handle_int(oidp, &value, 0, req);
1220
1221         if ((error != 0)
1222          || (req->newptr == NULL))
1223                 return (error);
1224
1225         /*
1226          * Acceptable values here are 6, 10 or 12, or 16.
1227          */
1228         if (value < 6)
1229                 value = 6;
1230         else if ((value > 6)
1231               && (value <= 10))
1232                 value = 10;
1233         else if ((value > 10)
1234               && (value <= 12))
1235                 value = 12;
1236         else if (value > 12)
1237                 value = 16;
1238
1239         *(int *)arg1 = value;
1240
1241         return (0);
1242 }
1243
1244 static cam_status
1245 daregister(struct cam_periph *periph, void *arg)
1246 {
1247         struct da_softc *softc;
1248         struct ccb_setasync csa;
1249         struct ccb_pathinq cpi;
1250         struct ccb_getdev *cgd;
1251         char tmpstr[80];
1252         caddr_t match;
1253
1254         cgd = (struct ccb_getdev *)arg;
1255         if (periph == NULL) {
1256                 kprintf("daregister: periph was NULL!!\n");
1257                 return(CAM_REQ_CMP_ERR);
1258         }
1259
1260         if (cgd == NULL) {
1261                 kprintf("daregister: no getdev CCB, can't register device\n");
1262                 return(CAM_REQ_CMP_ERR);
1263         }
1264
1265         softc = kmalloc(sizeof(*softc), M_DEVBUF, M_INTWAIT | M_ZERO);
1266         LIST_INIT(&softc->pending_ccbs);
1267         softc->state = DA_STATE_PROBE;
1268         bioq_init(&softc->bio_queue);
1269         if (SID_IS_REMOVABLE(&cgd->inq_data))
1270                 softc->flags |= DA_FLAG_PACK_REMOVABLE;
1271         if ((cgd->inq_data.flags & SID_CmdQue) != 0)
1272                 softc->flags |= DA_FLAG_TAGGED_QUEUING;
1273
1274         periph->softc = softc;
1275
1276         cam_extend_set(daperiphs, periph->unit_number, periph);
1277
1278         /*
1279          * See if this device has any quirks.
1280          */
1281         match = cam_quirkmatch((caddr_t)&cgd->inq_data,
1282                                (caddr_t)da_quirk_table,
1283                                sizeof(da_quirk_table)/sizeof(*da_quirk_table),
1284                                sizeof(*da_quirk_table), scsi_inquiry_match);
1285
1286         if (match != NULL)
1287                 softc->quirks = ((struct da_quirk_entry *)match)->quirks;
1288         else
1289                 softc->quirks = DA_Q_NONE;
1290
1291         TASK_INIT(&softc->sysctl_task, 0, dasysctlinit, periph);
1292
1293         /* Check if the SIM does not want 6 byte commands */
1294         xpt_setup_ccb(&cpi.ccb_h, periph->path, /*priority*/1);
1295         cpi.ccb_h.func_code = XPT_PATH_INQ;
1296         xpt_action((union ccb *)&cpi);
1297         if (cpi.ccb_h.status == CAM_REQ_CMP && (cpi.hba_misc & PIM_NO_6_BYTE))
1298                 softc->quirks |= DA_Q_NO_6_BYTE;
1299
1300         /*
1301          * RBC devices don't have to support READ(6), only READ(10).
1302          */
1303         if (softc->quirks & DA_Q_NO_6_BYTE || SID_TYPE(&cgd->inq_data) == T_RBC)
1304                 softc->minimum_cmd_size = 10;
1305         else
1306                 softc->minimum_cmd_size = 6;
1307
1308         /*
1309          * Load the user's default, if any.
1310          */
1311         ksnprintf(tmpstr, sizeof(tmpstr), "kern.cam.da.%d.minimum_cmd_size",
1312                  periph->unit_number);
1313         TUNABLE_INT_FETCH(tmpstr, &softc->minimum_cmd_size);
1314
1315         /*
1316          * 6, 10, 12, and 16 are the currently permissible values.
1317          */
1318         if (softc->minimum_cmd_size < 6)
1319                 softc->minimum_cmd_size = 6;
1320         else if ((softc->minimum_cmd_size > 6)
1321               && (softc->minimum_cmd_size <= 10))
1322                 softc->minimum_cmd_size = 10;
1323         else if ((softc->minimum_cmd_size > 10)
1324               && (softc->minimum_cmd_size <= 12))
1325                 softc->minimum_cmd_size = 12;
1326         else if (softc->minimum_cmd_size > 12)
1327                 softc->minimum_cmd_size = 16;
1328
1329         /*
1330          * Block our timeout handler while we
1331          * add this softc to the dev list.
1332          */
1333         crit_enter();
1334         SLIST_INSERT_HEAD(&softc_list, softc, links);
1335         crit_exit();
1336
1337         /*
1338          * The DA driver supports a blocksize, but
1339          * we don't know the blocksize until we do
1340          * a read capacity.  So, set a flag to
1341          * indicate that the blocksize is
1342          * unavailable right now.  We'll clear the
1343          * flag as soon as we've done a read capacity.
1344          */
1345         devstat_add_entry(&softc->device_stats, "da",
1346                           periph->unit_number, 0,
1347                           DEVSTAT_BS_UNAVAILABLE,
1348                           SID_TYPE(&cgd->inq_data) | DEVSTAT_TYPE_IF_SCSI,
1349                           DEVSTAT_PRIORITY_DISK);
1350
1351         /*
1352          * Register this media as a disk
1353          */
1354         disk_create(periph->unit_number, &softc->disk, &da_ops);
1355         softc->disk.d_rawdev->si_iosize_max = MAXPHYS;
1356
1357         /*
1358          * Add async callbacks for bus reset and
1359          * bus device reset calls.  I don't bother
1360          * checking if this fails as, in most cases,
1361          * the system will function just fine without
1362          * them and the only alternative would be to
1363          * not attach the device on failure.
1364          */
1365         xpt_setup_ccb(&csa.ccb_h, periph->path, /*priority*/5);
1366         csa.ccb_h.func_code = XPT_SASYNC_CB;
1367         csa.event_enable = AC_SENT_BDR | AC_BUS_RESET | AC_LOST_DEVICE;
1368         csa.callback = daasync;
1369         csa.callback_arg = periph;
1370         xpt_action((union ccb *)&csa);
1371         /*
1372          * Lock this peripheral until we are setup.
1373          * This first call can't block
1374          */
1375         cam_periph_lock(periph, 0);
1376         xpt_schedule(periph, /*priority*/5);
1377
1378         return(CAM_REQ_CMP);
1379 }
1380
1381 static void
1382 dastart(struct cam_periph *periph, union ccb *start_ccb)
1383 {
1384         struct da_softc *softc;
1385
1386         softc = (struct da_softc *)periph->softc;
1387
1388
1389         switch (softc->state) {
1390         case DA_STATE_NORMAL:
1391         {
1392                 /* Pull a buffer from the queue and get going on it */
1393                 struct bio *bio;
1394                 struct buf *bp;
1395
1396                 /*
1397                  * See if there is a buf with work for us to do..
1398                  */
1399                 crit_enter();
1400                 bio = bioq_first(&softc->bio_queue);
1401                 if (periph->immediate_priority <= periph->pinfo.priority) {
1402                         CAM_DEBUG_PRINT(CAM_DEBUG_SUBTRACE,
1403                                         ("queuing for immediate ccb\n"));
1404                         start_ccb->ccb_h.ccb_state = DA_CCB_WAITING;
1405                         SLIST_INSERT_HEAD(&periph->ccb_list, &start_ccb->ccb_h,
1406                                           periph_links.sle);
1407                         periph->immediate_priority = CAM_PRIORITY_NONE;
1408                         crit_exit();
1409                         wakeup(&periph->ccb_list);
1410                 } else if (bio == NULL) {
1411                         crit_exit();
1412                         xpt_release_ccb(start_ccb);
1413                 } else {
1414                         u_int8_t tag_code;
1415
1416                         bioq_remove(&softc->bio_queue, bio);
1417                         bp = bio->bio_buf;
1418
1419                         devstat_start_transaction(&softc->device_stats);
1420
1421                         if ((bp->b_flags & B_ORDERED) != 0
1422                          || (softc->flags & DA_FLAG_NEED_OTAG) != 0) {
1423                                 softc->flags &= ~DA_FLAG_NEED_OTAG;
1424                                 softc->ordered_tag_count++;
1425                                 tag_code = MSG_ORDERED_Q_TAG;
1426                         } else {
1427                                 tag_code = MSG_SIMPLE_Q_TAG;
1428                         }
1429
1430                         KKASSERT(bio->bio_offset % softc->params.secsize == 0);
1431
1432                         scsi_read_write(&start_ccb->csio,
1433                                         /*retries*/da_retry_count,
1434                                         dadone,
1435                                         tag_code,
1436                                         (bp->b_cmd == BUF_CMD_READ),
1437                                         /*byte2*/0,
1438                                         softc->minimum_cmd_size,
1439                                         bio->bio_offset / softc->params.secsize,
1440                                         bp->b_bcount / softc->params.secsize,
1441                                         bp->b_data,
1442                                         bp->b_bcount,
1443                                         /*sense_len*/SSD_FULL_SIZE,
1444                                         da_default_timeout * 1000);
1445                         start_ccb->ccb_h.ccb_state = DA_CCB_BUFFER_IO;
1446
1447                         /*
1448                          * Block out any asyncronous callbacks
1449                          * while we touch the pending ccb list.
1450                          */
1451                         LIST_INSERT_HEAD(&softc->pending_ccbs,
1452                                          &start_ccb->ccb_h, periph_links.le);
1453
1454                         softc->outstanding_cmds++;
1455                         /* We expect a unit attention from this device */
1456                         if ((softc->flags & DA_FLAG_RETRY_UA) != 0) {
1457                                 start_ccb->ccb_h.ccb_state |= DA_CCB_RETRY_UA;
1458                                 softc->flags &= ~DA_FLAG_RETRY_UA;
1459                         }
1460
1461                         start_ccb->ccb_h.ccb_bio = bio;
1462                         bio = bioq_first(&softc->bio_queue);
1463                         crit_exit();
1464
1465                         xpt_action(start_ccb);
1466                 }
1467
1468                 if (bio != NULL) {
1469                         /* Have more work to do, so ensure we stay scheduled */
1470                         xpt_schedule(periph, /* XXX priority */1);
1471                 }
1472                 break;
1473         }
1474         case DA_STATE_PROBE:
1475         {
1476                 struct ccb_scsiio *csio;
1477                 struct scsi_read_capacity_data *rcap;
1478
1479                 rcap = kmalloc(sizeof(*rcap), M_TEMP, M_INTWAIT | M_ZERO);
1480                 csio = &start_ccb->csio;
1481                 scsi_read_capacity(csio,
1482                                    /*retries*/4,
1483                                    dadone,
1484                                    MSG_SIMPLE_Q_TAG,
1485                                    rcap,
1486                                    SSD_FULL_SIZE,
1487                                    /*timeout*/5000);
1488                 start_ccb->ccb_h.ccb_bio = NULL;
1489                 start_ccb->ccb_h.ccb_state = DA_CCB_PROBE;
1490                 xpt_action(start_ccb);
1491                 break;
1492         }
1493         case DA_STATE_PROBE2:
1494         {
1495                 struct ccb_scsiio *csio;
1496                 struct scsi_read_capacity_data_long *rcaplong;
1497
1498                 rcaplong = (struct scsi_read_capacity_data_long *)
1499                 kmalloc(sizeof(*rcaplong), M_TEMP, M_INTWAIT);
1500                 if (rcaplong == NULL) {
1501                         kprintf("dastart: Couldn't allocate read_capacity\n");
1502                         /* da_free_periph??? */
1503                         break;
1504                 }
1505                 csio = &start_ccb->csio;
1506                 scsi_read_capacity_16(csio,
1507                                     /*retries*/ 4,
1508                                     /*cbfcnp*/ dadone,
1509                                     /*tag_action*/ MSG_SIMPLE_Q_TAG,
1510                                     /*lba*/ 0,
1511                                     /*reladr*/ 0,
1512                                     /*pmi*/ 0,
1513                                     rcaplong,
1514                                     /*sense_len*/ SSD_FULL_SIZE,
1515                                     /*timeout*/ 60000);
1516                 start_ccb->ccb_h.ccb_bio = NULL;
1517                 start_ccb->ccb_h.ccb_state = DA_CCB_PROBE2;
1518                 xpt_action(start_ccb);
1519                 break;
1520         }
1521         }
1522 }
1523
1524 static int
1525 cmd6workaround(union ccb *ccb)
1526 {
1527         struct scsi_rw_6 cmd6;
1528         struct scsi_rw_10 *cmd10;
1529         struct da_softc *softc;
1530         u_int8_t *cdb;
1531         int frozen;
1532
1533         cdb = ccb->csio.cdb_io.cdb_bytes;
1534
1535         /* Translation only possible if CDB is an array and cmd is R/W6 */
1536         if ((ccb->ccb_h.flags & CAM_CDB_POINTER) != 0 ||
1537             (*cdb != READ_6 && *cdb != WRITE_6))
1538                 return 0;
1539
1540         xpt_print_path(ccb->ccb_h.path);
1541         kprintf("READ(6)/WRITE(6) not supported, "
1542                "increasing minimum_cmd_size to 10.\n");
1543         softc = (struct da_softc *)xpt_path_periph(ccb->ccb_h.path)->softc;
1544         softc->minimum_cmd_size = 10;
1545
1546         bcopy(cdb, &cmd6, sizeof(struct scsi_rw_6));
1547         cmd10 = (struct scsi_rw_10 *)cdb;
1548         cmd10->opcode = (cmd6.opcode == READ_6) ? READ_10 : WRITE_10;
1549         cmd10->byte2 = 0;
1550         scsi_ulto4b(scsi_3btoul(cmd6.addr), cmd10->addr);
1551         cmd10->reserved = 0;
1552         scsi_ulto2b(cmd6.length, cmd10->length);
1553         cmd10->control = cmd6.control;
1554         ccb->csio.cdb_len = sizeof(*cmd10);
1555
1556         /* Requeue request, unfreezing queue if necessary */
1557         frozen = (ccb->ccb_h.status & CAM_DEV_QFRZN) != 0;
1558         ccb->ccb_h.status = CAM_REQUEUE_REQ;
1559         xpt_action(ccb);
1560         if (frozen) {
1561                 cam_release_devq(ccb->ccb_h.path,
1562                                  /*relsim_flags*/0,
1563                                  /*reduction*/0,
1564                                  /*timeout*/0,
1565                                  /*getcount_only*/0);
1566         }
1567         return (ERESTART);
1568 }
1569
1570 static void
1571 dadone(struct cam_periph *periph, union ccb *done_ccb)
1572 {
1573         struct da_softc *softc;
1574         struct ccb_scsiio *csio;
1575
1576         softc = (struct da_softc *)periph->softc;
1577         csio = &done_ccb->csio;
1578         switch (csio->ccb_h.ccb_state & DA_CCB_TYPE_MASK) {
1579         case DA_CCB_BUFFER_IO:
1580         {
1581                 struct buf *bp;
1582                 struct bio *bio;
1583
1584                 bio = (struct bio *)done_ccb->ccb_h.ccb_bio;
1585                 bp = bio->bio_buf;
1586                 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1587                         int error;
1588                         int sf;
1589
1590                         if ((csio->ccb_h.ccb_state & DA_CCB_RETRY_UA) != 0)
1591                                 sf = SF_RETRY_UA;
1592                         else
1593                                 sf = 0;
1594
1595                         error = daerror(done_ccb, CAM_RETRY_SELTO, sf);
1596                         if (error == ERESTART) {
1597                                 /*
1598                                  * A retry was scheuled, so
1599                                  * just return.
1600                                  */
1601                                 return;
1602                         }
1603                         if (error != 0) {
1604                                 struct bio *q_bio;
1605                                 struct buf *q_bp;
1606
1607                                 crit_enter();
1608
1609                                 if (error == ENXIO) {
1610                                         /*
1611                                          * Catastrophic error.  Mark our pack as
1612                                          * invalid.
1613                                          */
1614                                         /* XXX See if this is really a media
1615                                          *     change first.
1616                                          */
1617                                         xpt_print_path(periph->path);
1618                                         kprintf("Invalidating pack\n");
1619                                         softc->flags |= DA_FLAG_PACK_INVALID;
1620                                 }
1621
1622                                 /*
1623                                  * return all queued I/O with EIO, so that
1624                                  * the client can retry these I/Os in the
1625                                  * proper order should it attempt to recover.
1626                                  */
1627                                 while ((q_bio = bioq_first(&softc->bio_queue))
1628                                         != NULL) {
1629                                         bioq_remove(&softc->bio_queue, q_bio);
1630                                         q_bp = q_bio->bio_buf;
1631                                         q_bp->b_resid = q_bp->b_bcount;
1632                                         q_bp->b_error = EIO;
1633                                         q_bp->b_flags |= B_ERROR;
1634                                         biodone(q_bio);
1635                                 }
1636                                 crit_exit();
1637                                 bp->b_error = error;
1638                                 bp->b_resid = bp->b_bcount;
1639                                 bp->b_flags |= B_ERROR;
1640                         } else {
1641                                 bp->b_resid = csio->resid;
1642                                 bp->b_error = 0;
1643                                 if (bp->b_resid != 0)
1644                                         bp->b_flags |= B_ERROR;
1645                         }
1646                         if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
1647                                 cam_release_devq(done_ccb->ccb_h.path,
1648                                                  /*relsim_flags*/0,
1649                                                  /*reduction*/0,
1650                                                  /*timeout*/0,
1651                                                  /*getcount_only*/0);
1652                 } else {
1653                         if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
1654                                 panic("REQ_CMP with QFRZN");
1655                         bp->b_resid = csio->resid;
1656                         if (csio->resid > 0)
1657                                 bp->b_flags |= B_ERROR;
1658                 }
1659
1660                 /*
1661                  * Block out any asyncronous callbacks
1662                  * while we touch the pending ccb list.
1663                  */
1664                 crit_enter();
1665                 LIST_REMOVE(&done_ccb->ccb_h, periph_links.le);
1666                 softc->outstanding_cmds--;
1667                 if (softc->outstanding_cmds == 0)
1668                         softc->flags |= DA_FLAG_WENT_IDLE;
1669                 crit_exit();
1670
1671                 devstat_end_transaction_buf(&softc->device_stats, bp);
1672                 biodone(bio);
1673                 break;
1674         }
1675         case DA_CCB_PROBE:
1676         case DA_CCB_PROBE2:
1677         {
1678                 struct     scsi_read_capacity_data *rdcap;
1679                 struct     scsi_read_capacity_data_long *rcaplong;
1680                 char       announce_buf[80];
1681
1682                 rdcap = NULL;
1683                 rcaplong = NULL;
1684                 if (softc->state == DA_STATE_PROBE)
1685                         rdcap =(struct scsi_read_capacity_data *)csio->data_ptr;
1686                 else
1687                         rcaplong = (struct scsi_read_capacity_data_long *)
1688                                     csio->data_ptr;
1689
1690                 if ((csio->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP) {
1691                         struct disk_params *dp;
1692                         uint32_t block_size;
1693                         uint64_t maxsector;
1694
1695                         if (softc->state == DA_STATE_PROBE) {
1696                                 block_size = scsi_4btoul(rdcap->length);
1697                                 maxsector = scsi_4btoul(rdcap->addr);
1698
1699                                 /*
1700                                  * According to SBC-2, if the standard 10
1701                                  * byte READ CAPACITY command returns 2^32,
1702                                  * we should issue the 16 byte version of
1703                                  * the command, since the device in question
1704                                  * has more sectors than can be represented
1705                                  * with the short version of the command.
1706                                  */
1707                                 if (maxsector == 0xffffffff) {
1708                                         softc->state = DA_STATE_PROBE2;
1709                                         kfree(rdcap, M_TEMP);
1710                                         xpt_release_ccb(done_ccb);
1711                                         xpt_schedule(periph, /*priority*/5);
1712                                         return;
1713                                 }
1714                         } else {
1715                                 block_size = scsi_4btoul(rcaplong->length);
1716                                 maxsector = scsi_8btou64(rcaplong->addr);
1717                         }
1718                         dasetgeom(periph, block_size, maxsector);
1719                         dp = &softc->params;
1720                         ksnprintf(announce_buf, sizeof(announce_buf),
1721                                 "%juMB (%ju %u byte sectors: %dH %dS/T %dC)",
1722                                 (uintmax_t) (((uintmax_t)dp->secsize *
1723                                 dp->sectors) / (1024*1024)),
1724                                 (uintmax_t)dp->sectors,
1725                                 dp->secsize, dp->heads, dp->secs_per_track,
1726                                 dp->cylinders);
1727                 } else {
1728                         int     error;
1729
1730                         announce_buf[0] = '\0';
1731
1732                         /*
1733                          * Retry any UNIT ATTENTION type errors.  They
1734                          * are expected at boot.
1735                          */
1736                         error = daerror(done_ccb, CAM_RETRY_SELTO,
1737                                         SF_RETRY_UA|SF_NO_PRINT);
1738                         if (error == ERESTART) {
1739                                 /*
1740                                  * A retry was scheuled, so
1741                                  * just return.
1742                                  */
1743                                 return;
1744                         } else if (error != 0) {
1745                                 struct scsi_sense_data *sense;
1746                                 int asc, ascq;
1747                                 int sense_key, error_code;
1748                                 int have_sense;
1749                                 cam_status status;
1750                                 struct ccb_getdev cgd;
1751
1752                                 /* Don't wedge this device's queue */
1753                                 status = done_ccb->ccb_h.status;
1754                                 if ((status & CAM_DEV_QFRZN) != 0)
1755                                         cam_release_devq(done_ccb->ccb_h.path,
1756                                                          /*relsim_flags*/0,
1757                                                          /*reduction*/0,
1758                                                          /*timeout*/0,
1759                                                          /*getcount_only*/0);
1760
1761
1762                                 xpt_setup_ccb(&cgd.ccb_h,
1763                                               done_ccb->ccb_h.path,
1764                                               /* priority */ 1);
1765                                 cgd.ccb_h.func_code = XPT_GDEV_TYPE;
1766                                 xpt_action((union ccb *)&cgd);
1767
1768                                 if (((csio->ccb_h.flags & CAM_SENSE_PHYS) != 0)
1769                                  || ((csio->ccb_h.flags & CAM_SENSE_PTR) != 0)
1770                                  || ((status & CAM_AUTOSNS_VALID) == 0))
1771                                         have_sense = FALSE;
1772                                 else
1773                                         have_sense = TRUE;
1774
1775                                 if (have_sense) {
1776                                         sense = &csio->sense_data;
1777                                         scsi_extract_sense(sense, &error_code,
1778                                                            &sense_key,
1779                                                            &asc, &ascq);
1780                                 }
1781                                 /*
1782                                  * Attach to anything that claims to be a
1783                                  * direct access or optical disk device,
1784                                  * as long as it doesn't return a "Logical
1785                                  * unit not supported" (0x25) error.
1786                                  */
1787                                 if ((have_sense) && (asc != 0x25)
1788                                  && (error_code == SSD_CURRENT_ERROR)) {
1789                                         const char *sense_key_desc;
1790                                         const char *asc_desc;
1791
1792                                         scsi_sense_desc(sense_key, asc, ascq,
1793                                                         &cgd.inq_data,
1794                                                         &sense_key_desc,
1795                                                         &asc_desc);
1796                                         ksnprintf(announce_buf,
1797                                             sizeof(announce_buf),
1798                                                 "Attempt to query device "
1799                                                 "size failed: %s, %s",
1800                                                 sense_key_desc,
1801                                                 asc_desc);
1802                                 } else {
1803                                         if (have_sense)
1804                                                 scsi_sense_print(
1805                                                         &done_ccb->csio);
1806                                         else {
1807                                                 xpt_print_path(periph->path);
1808                                                 kprintf("got CAM status %#x\n",
1809                                                        done_ccb->ccb_h.status);
1810                                         }
1811
1812                                         xpt_print_path(periph->path);
1813                                         kprintf("fatal error, failed"
1814                                                " to attach to device\n");
1815
1816                                         /*
1817                                          * Free up resources.
1818                                          */
1819                                         cam_periph_invalidate(periph);
1820                                 }
1821                         }
1822                 }
1823                 kfree(csio->data_ptr, M_TEMP);
1824                 if (announce_buf[0] != '\0') {
1825                         xpt_announce_periph(periph, announce_buf);
1826                         /*
1827                          * Create our sysctl variables, now that we know
1828                          * we have successfully attached.
1829                          */
1830                         taskqueue_enqueue(taskqueue_thread[mycpuid],
1831                             &softc->sysctl_task);
1832                 }
1833                 softc->state = DA_STATE_NORMAL;
1834                 /*
1835                  * Since our peripheral may be invalidated by an error
1836                  * above or an external event, we must release our CCB
1837                  * before releasing the probe lock on the peripheral.
1838                  * The peripheral will only go away once the last lock
1839                  * is removed, and we need it around for the CCB release
1840                  * operation.
1841                  */
1842                 xpt_release_ccb(done_ccb);
1843                 cam_periph_unlock(periph);
1844                 return;
1845         }
1846         case DA_CCB_WAITING:
1847         {
1848                 /* Caller will release the CCB */
1849                 wakeup(&done_ccb->ccb_h.cbfcnp);
1850                 return;
1851         }
1852         case DA_CCB_DUMP:
1853                 /* No-op.  We're polling */
1854                 return;
1855         default:
1856                 break;
1857         }
1858         xpt_release_ccb(done_ccb);
1859 }
1860
1861 static int
1862 daerror(union ccb *ccb, u_int32_t cam_flags, u_int32_t sense_flags)
1863 {
1864         struct da_softc   *softc;
1865         struct cam_periph *periph;
1866         int error;
1867
1868         periph = xpt_path_periph(ccb->ccb_h.path);
1869         softc = (struct da_softc *)periph->softc;
1870
1871         /*
1872          * Automatically detect devices that do not support
1873          * READ(6)/WRITE(6) and upgrade to using 10 byte cdbs.
1874          */
1875         error = 0;
1876         if ((ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_INVALID) {
1877                 error = cmd6workaround(ccb);
1878         } else if (((ccb->ccb_h.status & CAM_STATUS_MASK) ==
1879                    CAM_SCSI_STATUS_ERROR)
1880          && (ccb->ccb_h.status & CAM_AUTOSNS_VALID)
1881          && (ccb->csio.scsi_status == SCSI_STATUS_CHECK_COND)
1882          && ((ccb->ccb_h.flags & CAM_SENSE_PHYS) == 0)
1883          && ((ccb->ccb_h.flags & CAM_SENSE_PTR) == 0)) {
1884                 int sense_key, error_code, asc, ascq;
1885
1886                 scsi_extract_sense(&ccb->csio.sense_data,
1887                                    &error_code, &sense_key, &asc, &ascq);
1888                 if (sense_key == SSD_KEY_ILLEGAL_REQUEST)
1889                         error = cmd6workaround(ccb);
1890         }
1891         if (error == ERESTART)
1892                 return (ERESTART);
1893
1894         /*
1895          * XXX
1896          * Until we have a better way of doing pack validation,
1897          * don't treat UAs as errors.
1898          */
1899         sense_flags |= SF_RETRY_UA;
1900         return(cam_periph_error(ccb, cam_flags, sense_flags,
1901                                 &softc->saved_ccb));
1902 }
1903
1904 static void
1905 daprevent(struct cam_periph *periph, int action)
1906 {
1907         struct  da_softc *softc;
1908         union   ccb *ccb;
1909         int     error;
1910
1911         softc = (struct da_softc *)periph->softc;
1912
1913         if (((action == PR_ALLOW)
1914           && (softc->flags & DA_FLAG_PACK_LOCKED) == 0)
1915          || ((action == PR_PREVENT)
1916           && (softc->flags & DA_FLAG_PACK_LOCKED) != 0)) {
1917                 return;
1918         }
1919
1920         ccb = cam_periph_getccb(periph, /*priority*/1);
1921
1922         scsi_prevent(&ccb->csio,
1923                      /*retries*/1,
1924                      /*cbcfp*/dadone,
1925                      MSG_SIMPLE_Q_TAG,
1926                      action,
1927                      SSD_FULL_SIZE,
1928                      5000);
1929
1930         error = cam_periph_runccb(ccb, /*error_routine*/NULL, CAM_RETRY_SELTO,
1931                                   SF_RETRY_UA, &softc->device_stats);
1932
1933         if (error == 0) {
1934                 if (action == PR_ALLOW)
1935                         softc->flags &= ~DA_FLAG_PACK_LOCKED;
1936                 else
1937                         softc->flags |= DA_FLAG_PACK_LOCKED;
1938         }
1939
1940         xpt_release_ccb(ccb);
1941 }
1942
1943 static int
1944 dagetcapacity(struct cam_periph *periph)
1945 {
1946         struct da_softc *softc;
1947         union ccb *ccb;
1948         struct scsi_read_capacity_data *rcap;
1949         struct scsi_read_capacity_data_long *rcaplong;
1950         uint32_t block_len;
1951         uint64_t maxsector;
1952         int error;
1953
1954         softc = (struct da_softc *)periph->softc;
1955         block_len = 0;
1956         maxsector = 0;
1957         error = 0;
1958
1959         /* Do a read capacity */
1960         rcap = (void *)kmalloc(sizeof(*rcaplong), M_TEMP, M_INTWAIT);
1961
1962         ccb = cam_periph_getccb(periph, /*priority*/1);
1963         scsi_read_capacity(&ccb->csio,
1964                            /*retries*/4,
1965                            /*cbfncp*/dadone,
1966                            MSG_SIMPLE_Q_TAG,
1967                            rcap,
1968                            SSD_FULL_SIZE,
1969                            /*timeout*/60000);
1970         ccb->ccb_h.ccb_bio = NULL;
1971
1972         error = cam_periph_runccb(ccb, daerror,
1973                                   /*cam_flags*/CAM_RETRY_SELTO,
1974                                   /*sense_flags*/SF_RETRY_UA,
1975                                   &softc->device_stats);
1976
1977         if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
1978                 cam_release_devq(ccb->ccb_h.path,
1979                                  /*relsim_flags*/0,
1980                                  /*reduction*/0,
1981                                  /*timeout*/0,
1982                                  /*getcount_only*/0);
1983
1984         if (error == 0) {
1985                 block_len = scsi_4btoul(rcap->length);
1986                 maxsector = scsi_4btoul(rcap->addr);
1987
1988                 if (maxsector != 0xffffffff)
1989                         goto done;
1990         } else
1991                 goto done;
1992
1993         rcaplong = (struct scsi_read_capacity_data_long *)rcap;
1994
1995         scsi_read_capacity_16(&ccb->csio,
1996                               /*retries*/ 4,
1997                               /*cbfcnp*/ dadone,
1998                               /*tag_action*/ MSG_SIMPLE_Q_TAG,
1999                               /*lba*/ 0,
2000                               /*reladr*/ 0,
2001                               /*pmi*/ 0,
2002                               rcaplong,
2003                               /*sense_len*/ SSD_FULL_SIZE,
2004                               /*timeout*/ 60000);
2005         ccb->ccb_h.ccb_bio = NULL;
2006
2007         error = cam_periph_runccb(ccb, daerror,
2008                                   /*cam_flags*/CAM_RETRY_SELTO,
2009                                   /*sense_flags*/SF_RETRY_UA,
2010                                   &softc->device_stats);
2011
2012         if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
2013                 cam_release_devq(ccb->ccb_h.path,
2014                                  /*relsim_flags*/0,
2015                                  /*reduction*/0,
2016                                  /*timeout*/0,
2017                                  /*getcount_only*/0);
2018
2019         if (error == 0) {
2020                 block_len = scsi_4btoul(rcaplong->length);
2021                 maxsector = scsi_8btou64(rcaplong->addr);
2022         }
2023
2024 done:
2025
2026         if (error == 0)
2027                 dasetgeom(periph, block_len, maxsector);
2028
2029         xpt_release_ccb(ccb);
2030
2031         kfree(rcap, M_TEMP);
2032
2033         return (error);
2034 }
2035
2036 static void
2037 dasetgeom(struct cam_periph *periph, uint32_t block_len, uint64_t maxsector)
2038 {
2039         struct ccb_calc_geometry ccg;
2040         struct da_softc *softc;
2041         struct disk_params *dp;
2042
2043         softc = (struct da_softc *)periph->softc;
2044
2045         dp = &softc->params;
2046         dp->secsize = block_len;
2047         dp->sectors = maxsector + 1;
2048         /*
2049          * Have the controller provide us with a geometry
2050          * for this disk.  The only time the geometry
2051          * matters is when we boot and the controller
2052          * is the only one knowledgeable enough to come
2053          * up with something that will make this a bootable
2054          * device.
2055          */
2056         xpt_setup_ccb(&ccg.ccb_h, periph->path, /*priority*/1);
2057         ccg.ccb_h.func_code = XPT_CALC_GEOMETRY;
2058         ccg.block_size = dp->secsize;
2059         ccg.volume_size = dp->sectors;
2060         ccg.heads = 0;
2061         ccg.secs_per_track = 0;
2062         ccg.cylinders = 0;
2063         xpt_action((union ccb*)&ccg);
2064         dp->heads = ccg.heads;
2065         dp->secs_per_track = ccg.secs_per_track;
2066         dp->cylinders = ccg.cylinders;
2067 }
2068
2069 static void
2070 dasendorderedtag(void *arg)
2071 {
2072         struct da_softc *softc;
2073
2074         for (softc = SLIST_FIRST(&softc_list);
2075              softc != NULL;
2076              softc = SLIST_NEXT(softc, links)) {
2077                 crit_enter();
2078                 if ((softc->ordered_tag_count == 0)
2079                  && ((softc->flags & DA_FLAG_WENT_IDLE) == 0)) {
2080                         softc->flags |= DA_FLAG_NEED_OTAG;
2081                 }
2082                 if (softc->outstanding_cmds > 0)
2083                         softc->flags &= ~DA_FLAG_WENT_IDLE;
2084
2085                 softc->ordered_tag_count = 0;
2086                 crit_exit();
2087         }
2088         /* Queue us up again */
2089         callout_reset(&dasendorderedtag_ch,
2090             (da_default_timeout * hz) / DA_ORDEREDTAG_INTERVAL,
2091             dasendorderedtag, NULL);
2092 }
2093
2094 /*
2095  * Step through all DA peripheral drivers, and if the device is still open,
2096  * sync the disk cache to physical media.
2097  */
2098 static void
2099 dashutdown(void * arg, int howto)
2100 {
2101         struct cam_periph *periph;
2102         struct da_softc *softc;
2103
2104         TAILQ_FOREACH(periph, &dadriver.units, unit_links) {
2105                 union ccb ccb;
2106
2107                 softc = (struct da_softc *)periph->softc;
2108
2109                 /*
2110                  * We only sync the cache if the drive is still open, and
2111                  * if the drive is capable of it..
2112                  */
2113                 if (((softc->flags & DA_FLAG_OPEN) == 0)
2114                  || (softc->quirks & DA_Q_NO_SYNC_CACHE))
2115                         continue;
2116
2117                 xpt_setup_ccb(&ccb.ccb_h, periph->path, /*priority*/1);
2118
2119                 ccb.ccb_h.ccb_state = DA_CCB_DUMP;
2120                 scsi_synchronize_cache(&ccb.csio,
2121                                        /*retries*/1,
2122                                        /*cbfcnp*/dadone,
2123                                        MSG_SIMPLE_Q_TAG,
2124                                        /*begin_lba*/0, /* whole disk */
2125                                        /*lb_count*/0,
2126                                        SSD_FULL_SIZE,
2127                                        60 * 60 * 1000);
2128
2129                 xpt_polled_action(&ccb);
2130
2131                 if ((ccb.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
2132                         if (((ccb.ccb_h.status & CAM_STATUS_MASK) ==
2133                              CAM_SCSI_STATUS_ERROR)
2134                          && (ccb.csio.scsi_status == SCSI_STATUS_CHECK_COND)){
2135                                 int error_code, sense_key, asc, ascq;
2136
2137                                 scsi_extract_sense(&ccb.csio.sense_data,
2138                                                    &error_code, &sense_key,
2139                                                    &asc, &ascq);
2140
2141                                 if (sense_key != SSD_KEY_ILLEGAL_REQUEST)
2142                                         scsi_sense_print(&ccb.csio);
2143                         } else {
2144                                 xpt_print_path(periph->path);
2145                                 kprintf("Synchronize cache failed, status "
2146                                        "== 0x%x, scsi status == 0x%x\n",
2147                                        ccb.ccb_h.status, ccb.csio.scsi_status);
2148                         }
2149                 }
2150
2151                 if ((ccb.ccb_h.status & CAM_DEV_QFRZN) != 0)
2152                         cam_release_devq(ccb.ccb_h.path,
2153                                          /*relsim_flags*/0,
2154                                          /*reduction*/0,
2155                                          /*timeout*/0,
2156                                          /*getcount_only*/0);
2157
2158         }
2159 }
2160
2161 #else /* !_KERNEL */
2162
2163 /*
2164  * XXX This is only left out of the kernel build to silence warnings.  If,
2165  * for some reason this function is used in the kernel, the ifdefs should
2166  * be moved so it is included both in the kernel and userland.
2167  */
2168 void
2169 scsi_format_unit(struct ccb_scsiio *csio, u_int32_t retries,
2170                  void (*cbfcnp)(struct cam_periph *, union ccb *),
2171                  u_int8_t tag_action, u_int8_t byte2, u_int16_t ileave,
2172                  u_int8_t *data_ptr, u_int32_t dxfer_len, u_int8_t sense_len,
2173                  u_int32_t timeout)
2174 {
2175         struct scsi_format_unit *scsi_cmd;
2176
2177         scsi_cmd = (struct scsi_format_unit *)&csio->cdb_io.cdb_bytes;
2178         scsi_cmd->opcode = FORMAT_UNIT;
2179         scsi_cmd->byte2 = byte2;
2180         scsi_ulto2b(ileave, scsi_cmd->interleave);
2181
2182         cam_fill_csio(csio,
2183                       retries,
2184                       cbfcnp,
2185                       /*flags*/ (dxfer_len > 0) ? CAM_DIR_OUT : CAM_DIR_NONE,
2186                       tag_action,
2187                       data_ptr,
2188                       dxfer_len,
2189                       sense_len,
2190                       sizeof(*scsi_cmd),
2191                       timeout);
2192 }
2193
2194 #endif /* _KERNEL */