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 1.21 2004/12/30 07:01:51 cpressey 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/eventhandler.h>
  52 #include <sys/malloc.h>
  53 #include <sys/cons.h>
  54 #include <sys/proc.h>
  55 #endif
  56 #include <sys/buf2.h>
  57
  58 #include <machine/md_var.h>
  59
  60 #ifdef _KERNEL
  61 #include <vm/vm.h>
  62 #include <vm/pmap.h>
  63 #endif
  64
  65 #ifndef _KERNEL
  66 #include <stdio.h>
  67 #include <string.h>
  68 #endif /* _KERNEL */
  69
  70 #include "../cam.h"
  71 #include "../cam_ccb.h"
  72 #include "../cam_extend.h"
  73 #include "../cam_periph.h"
  74 #include "../cam_xpt_periph.h"
  75
  76 #include "scsi_message.h"
  77
  78 #ifndef _KERNEL
  79 #include "scsi_da.h"
  80 #endif /* !_KERNEL */
  81
  82 #ifdef _KERNEL
  83 typedef enum {
  84         DA_STATE_PROBE,
  85         DA_STATE_NORMAL
  86 } da_state;
  87
  88 typedef enum {
  89         DA_FLAG_PACK_INVALID    = 0x001,
  90         DA_FLAG_NEW_PACK        = 0x002,
  91         DA_FLAG_PACK_LOCKED     = 0x004,
  92         DA_FLAG_PACK_REMOVABLE  = 0x008,
  93         DA_FLAG_TAGGED_QUEUING  = 0x010,
  94         DA_FLAG_NEED_OTAG       = 0x020,
  95         DA_FLAG_WENT_IDLE       = 0x040,
  96         DA_FLAG_RETRY_UA        = 0x080,
  97         DA_FLAG_OPEN            = 0x100,
  98         DA_FLAG_SCTX_INIT       = 0x200
  99 } da_flags;
 100
 101 typedef enum {
 102         DA_Q_NONE               = 0x00,
 103         DA_Q_NO_SYNC_CACHE      = 0x01,
 104         DA_Q_NO_6_BYTE          = 0x02,
 105         DA_Q_NO_PREVENT         = 0x04
 106 } da_quirks;
 107
 108 typedef enum {
 109         DA_CCB_PROBE            = 0x01,
 110         DA_CCB_BUFFER_IO        = 0x02,
 111         DA_CCB_WAITING          = 0x03,
 112         DA_CCB_DUMP             = 0x04,
 113         DA_CCB_TYPE_MASK        = 0x0F,
 114         DA_CCB_RETRY_UA         = 0x10
 115 } da_ccb_state;
 116
 117 /* Offsets into our private area for storing information */
 118 #define ccb_state       ppriv_field0
 119 #define ccb_bp          ppriv_ptr1
 120
 121 struct disk_params {
 122         u_int8_t  heads;
 123         u_int16_t cylinders;
 124         u_int8_t  secs_per_track;
 125         u_int32_t secsize;      /* Number of bytes/sector */
 126         u_int32_t sectors;      /* total number sectors */
 127 };
 128
 129 struct da_softc {
 130         struct   buf_queue_head buf_queue;
 131         struct   devstat device_stats;
 132         SLIST_ENTRY(da_softc) links;
 133         LIST_HEAD(, ccb_hdr) pending_ccbs;
 134         da_state state;
 135         da_flags flags;
 136         da_quirks quirks;
 137         int      minimum_cmd_size;
 138         int      ordered_tag_count;
 139         struct   disk_params params;
 140         struct   disk disk;
 141         union    ccb saved_ccb;
 142         struct task             sysctl_task;
 143         struct sysctl_ctx_list  sysctl_ctx;
 144         struct sysctl_oid       *sysctl_tree;
 145 };
 146
 147 struct da_quirk_entry {
 148         struct scsi_inquiry_pattern inq_pat;
 149         da_quirks quirks;
 150 };
 151
 152 static const char quantum[] = "QUANTUM";
 153 static const char microp[] = "MICROP";
 154
 155 static struct da_quirk_entry da_quirk_table[] =
 156 {
 157         /* SPI, FC devices */
 158         {
 159                 /*
 160                  * Fujitsu M2513A MO drives.
 161                  * Tested devices: M2513A2 firmware versions 1200 & 1300.
 162                  * (dip switch selects whether T_DIRECT or T_OPTICAL device)
 163                  * Reported by: W.Scholten <whs@xs4all.nl>
 164                  */
 165                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "FUJITSU", "M2513A", "*"},
 166                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 167         },
 168         {
 169                 /* See above. */
 170                 {T_OPTICAL, SIP_MEDIA_REMOVABLE, "FUJITSU", "M2513A", "*"},
 171                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 172         },
 173         {
 174                 /*
 175                  * This particular Fujitsu drive doesn't like the
 176                  * synchronize cache command.
 177                  * Reported by: Tom Jackson <toj@gorilla.net>
 178                  */
 179                 {T_DIRECT, SIP_MEDIA_FIXED, "FUJITSU", "M2954*", "*"},
 180                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 181
 182         },
 183         {
 184                 /*
 185                  * This drive doesn't like the synchronize cache command
 186                  * either.  Reported by: Matthew Jacob <mjacob@feral.com>
 187                  * in NetBSD PR kern/6027, August 24, 1998.
 188                  */
 189                 {T_DIRECT, SIP_MEDIA_FIXED, microp, "2217*", "*"},
 190                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 191         },
 192         {
 193                 /*
 194                  * This drive doesn't like the synchronize cache command
 195                  * either.  Reported by: Hellmuth Michaelis (hm@kts.org)
 196                  * (PR 8882).
 197                  */
 198                 {T_DIRECT, SIP_MEDIA_FIXED, microp, "2112*", "*"},
 199                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 200         },
 201         {
 202                 /*
 203                  * Doesn't like the synchronize cache command.
 204                  * Reported by: Blaz Zupan <blaz@gold.amis.net>
 205                  */
 206                 {T_DIRECT, SIP_MEDIA_FIXED, "NEC", "D3847*", "*"},
 207                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 208         },
 209         {
 210                 /*
 211                  * Doesn't like the synchronize cache command.
 212                  */
 213                 {T_DIRECT, SIP_MEDIA_FIXED, quantum, "MAVERICK 540S", "*"},
 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, "LPS525S", "*"},
 221                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 222         },
 223         {
 224                 /*
 225                  * Doesn't work correctly with 6 byte reads/writes.
 226                  * Returns illegal request, and points to byte 9 of the
 227                  * 6-byte CDB.
 228                  * Reported by:  Adam McDougall <bsdx@spawnet.com>
 229                  */
 230                 {T_DIRECT, SIP_MEDIA_FIXED, quantum, "VIKING 4*", "*"},
 231                 /*quirks*/ DA_Q_NO_6_BYTE
 232         },
 233         {
 234                 /* See above. */
 235                 {T_DIRECT, SIP_MEDIA_FIXED, quantum, "VIKING 2*", "*"},
 236                 /*quirks*/ DA_Q_NO_6_BYTE
 237         },
 238         /* XXX USB floppy quirks temporarily enabled for 4.9R */
 239         /* USB floppy devices supported by umass(4) */
 240         {
 241                 /*
 242                  * This USB floppy drive uses the UFI command set. This
 243                  * command set is a derivative of the ATAPI command set and
 244                  * does not support READ_6 commands only READ_10. It also does
 245                  * not support sync cache (0x35).
 246                  */
 247                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Y-E DATA", "USB-FDU", "*"},
 248                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 249         },
 250         {
 251                 /* Another USB floppy */
 252                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "MATSHITA", "FDD CF-VFDU*","*"},
 253                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 254         },
 255         {
 256                 /*
 257                  * The vendor, product and version strings coming from the
 258                  * controller are null terminated instead of being padded with
 259                  * spaces. The trailing wildcard character '*' is required.
 260                  */
 261                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "SMSC*", "USB FDC*","*"},
 262                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 263         },
 264         {
 265                 /*
 266                  * SmartDisk (Mitsumi) USB floppy drive
 267                  * PR: kern/50226
 268                  */
 269                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "MITSUMI", "USB FDD", "*"},
 270                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 271         },
 272 #ifdef DA_OLD_QUIRKS
 273         /* USB mass storage devices supported by umass(4) */
 274         {
 275                 /*
 276                  * Sony Memory Stick adapter MSAC-US1 and
 277                  * Sony PCG-C1VJ Internal Memory Stick Slot (MSC-U01).
 278                  * Make all sony MS* products use this quirk.
 279                  */
 280                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Sony", "MS*", "*"},
 281                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 282         },
 283         {
 284                 /*
 285                  * Sony Memory Stick adapter for the CLIE series
 286                  * of PalmOS PDA's
 287                  */
 288                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Sony", "CLIE*", "*"},
 289                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 290         },
 291         {
 292                 /*
 293                  * Intelligent Stick USB disk-on-key
 294                  * PR: kern/53005
 295                  */
 296                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "USB Card",
 297                  "IntelligentStick*", "*"},
 298                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 299         },
 300         {
 301                 /*
 302                  * Sony DSC cameras (DSC-S30, DSC-S50, DSC-S70)
 303                  */
 304                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Sony", "Sony DSC", "*"},
 305                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 306         },
 307         {
 308                 /*
 309                  * Microtech USB CameraMate
 310                  */
 311                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "eUSB    Compact*",
 312                  "Compact Flash*", "*"},
 313                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 314         },
 315         {
 316                 /*
 317                  * Olympus digital cameras (C-3040ZOOM, C-2040ZOOM, C-1)
 318                  */
 319                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "OLYMPUS", "C-*", "*"},
 320                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 321         },
 322         {
 323                 /*
 324                  * Olympus digital cameras (E-100RS, E-10).
 325                  */
 326                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "OLYMPUS", "E-*", "*"},
 327                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 328         },
 329         {
 330                 /*
 331                  * KingByte Pen Drives
 332                  */
 333                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "NO BRAND", "PEN DRIVE", "*"},
 334                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 335         },
 336         {
 337                 /*
 338                  * iRiver iFP MP3 player (with UMS Firmware)
 339                  * PR: kern/54881, i386/63941, kern/66124
 340                  */
 341                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "iRiver", "iFP*", "*"},
 342                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 343         },
 344         {
 345                 /*
 346                  * Frontier Labs NEX IA+ Digital Audio Player, rev 1.10/0.01
 347                  * PR: kern/70158
 348                  */
 349                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "FL" , "NexIA+*", "*"},
 350                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 351         },
 352         {
 353                 /*
 354                  * FujiFilm Camera
 355                  */
 356                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "FUJIFILMUSB-DRIVEUNIT",
 357                  "USB-DRIVEUNIT", "*"},
 358                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 359         },
 360         {
 361                 /*
 362                  * Minolta Dimage E203
 363                  */
 364                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "MINOLTA", "DiMAGE E203", "*"},
 365                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 366         },
 367         {
 368                 /*
 369                  * Apacer HandyDrive
 370                  * PR: kern/43627
 371                  */
 372                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Apacer", "HandyDrive", "*"},
 373                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 374         },
 375         {
 376                 /*
 377                  * Daisy Technology PhotoClip on Zoran chip
 378                  * PR: kern/43580
 379                  */
 380                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "ZORAN", "COACH", "*"},
 381                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 382         },
 383         {
 384                 /*
 385                  * Sony USB Key-Storage
 386                  * PR: kern/46386
 387                  */
 388                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Sony", "Storage Media", "*"},
 389                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 390         },
 391 #endif /* DA_OLD_QUIRKS */
 392         {
 393                 /*
 394                  * EXATELECOM (Sigmatel) i-Bead 100/105 USB Flash MP3 Player
 395                  * PR: kern/51675
 396                  */
 397                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "EXATEL", "i-BEAD10*", "*"},
 398                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 399         },
 400         {
 401                 /*
 402                  * Jungsoft NEXDISK USB flash key
 403                  * PR: kern/54737
 404                  */
 405                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "JUNGSOFT", "NEXDISK*", "*"},
 406                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 407         },
 408         {
 409                 /*
 410                  * Creative Nomad MUVO mp3 player (USB)
 411                  * PR: kern/53094
 412                  */
 413                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "CREATIVE", "NOMAD_MUVO", "*"},
 414                 /*quirks*/ DA_Q_NO_SYNC_CACHE|DA_Q_NO_PREVENT
 415         },
 416 };
 417
 418 static  d_open_t        daopen;
 419 static  d_close_t       daclose;
 420 static  d_strategy_t    dastrategy;
 421 static  d_ioctl_t       daioctl;
 422 static  d_dump_t        dadump;
 423 static  periph_init_t   dainit;
 424 static  void            daasync(void *callback_arg, u_int32_t code,
 425                                 struct cam_path *path, void *arg);
 426 static  int             dacmdsizesysctl(SYSCTL_HANDLER_ARGS);
 427 static  periph_ctor_t   daregister;
 428 static  periph_dtor_t   dacleanup;
 429 static  periph_start_t  dastart;
 430 static  periph_oninv_t  daoninvalidate;
 431 static  void            dadone(struct cam_periph *periph,
 432                                union ccb *done_ccb);
 433 static  int             daerror(union ccb *ccb, u_int32_t cam_flags,
 434                                 u_int32_t sense_flags);
 435 static void             daprevent(struct cam_periph *periph, int action);
 436 static void             dasetgeom(struct cam_periph *periph,
 437                                   struct scsi_read_capacity_data * rdcap);
 438 static timeout_t        dasendorderedtag;
 439 static void             dashutdown(void *arg, int howto);
 440
 441 #ifndef DA_DEFAULT_TIMEOUT
 442 #define DA_DEFAULT_TIMEOUT 60   /* Timeout in seconds */
 443 #endif
 444
 445 #ifndef DA_DEFAULT_RETRY
 446 #define DA_DEFAULT_RETRY        4
 447 #endif
 448
 449 static int da_retry_count = DA_DEFAULT_RETRY;
 450 static int da_default_timeout = DA_DEFAULT_TIMEOUT;
 451 static struct callout dasendorderedtag_ch;
 452
 453 SYSCTL_NODE(_kern_cam, OID_AUTO, da, CTLFLAG_RD, 0,
 454             "CAM Direct Access Disk driver");
 455 SYSCTL_INT(_kern_cam_da, OID_AUTO, retry_count, CTLFLAG_RW,
 456            &da_retry_count, 0, "Normal I/O retry count");
 457 TUNABLE_INT("kern.cam.da.retry_count", &da_retry_count);
 458 SYSCTL_INT(_kern_cam_da, OID_AUTO, default_timeout, CTLFLAG_RW,
 459            &da_default_timeout, 0, "Normal I/O timeout (in seconds)");
 460 TUNABLE_INT("kern.cam.da.default_timeout", &da_default_timeout);
 461
 462 /*
 463  * DA_ORDEREDTAG_INTERVAL determines how often, relative
 464  * to the default timeout, we check to see whether an ordered
 465  * tagged transaction is appropriate to prevent simple tag
 466  * starvation.  Since we'd like to ensure that there is at least
 467  * 1/2 of the timeout length left for a starved transaction to
 468  * complete after we've sent an ordered tag, we must poll at least
 469  * four times in every timeout period.  This takes care of the worst
 470  * case where a starved transaction starts during an interval that
 471  * meets the requirement "don't send an ordered tag" test so it takes
 472  * us two intervals to determine that a tag must be sent.
 473  */
 474 #ifndef DA_ORDEREDTAG_INTERVAL
 475 #define DA_ORDEREDTAG_INTERVAL 4
 476 #endif
 477
 478 static struct periph_driver dadriver =
 479 {
 480         dainit, "da",
 481         TAILQ_HEAD_INITIALIZER(dadriver.units), /* generation */ 0
 482 };
 483
 484 DATA_SET(periphdriver_set, dadriver);
 485
 486 /* For 2.2-stable support */
 487 #ifndef D_DISK
 488 #define D_DISK 0
 489 #endif
 490
 491 static struct cdevsw da_cdevsw = {
 492         /* name */      "da",
 493         /* maj */       DA_CDEV_MAJOR,
 494         /* flags */     D_DISK,
 495         /* port */      NULL,
 496         /* clone */     NULL,
 497
 498         /* open */      daopen,
 499         /* close */     daclose,
 500         /* read */      physread,
 501         /* write */     physwrite,
 502         /* ioctl */     daioctl,
 503         /* poll */      nopoll,
 504         /* mmap */      nommap,
 505         /* strategy */  dastrategy,
 506         /* dump */      dadump,
 507         /* psize */     nopsize
 508 };
 509
 510 static SLIST_HEAD(,da_softc) softc_list;
 511 static struct extend_array *daperiphs;
 512
 513 static int
 514 daopen(dev_t dev, int flags, int fmt, struct thread *td)
 515 {
 516         struct cam_periph *periph;
 517         struct da_softc *softc;
 518         struct disklabel *label;
 519         int unit;
 520         int part;
 521         int error;
 522         int s;
 523
 524         unit = dkunit(dev);
 525         part = dkpart(dev);
 526         periph = cam_extend_get(daperiphs, unit);
 527         if (periph == NULL)
 528                 return (ENXIO);
 529
 530         softc = (struct da_softc *)periph->softc;
 531
 532         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE,
 533             ("daopen: dev=%s (unit %d , partition %d)\n", devtoname(dev),
 534              unit, part));
 535
 536         if ((error = cam_periph_lock(periph, PCATCH)) != 0) {
 537                 return (error); /* error code from tsleep */
 538         }
 539
 540         if (cam_periph_acquire(periph) != CAM_REQ_CMP)
 541                 return(ENXIO);
 542         softc->flags |= DA_FLAG_OPEN;
 543
 544         s = splsoftcam();
 545         if ((softc->flags & DA_FLAG_PACK_INVALID) != 0) {
 546                 /* Invalidate our pack information. */
 547                 disk_invalidate(&softc->disk);
 548                 softc->flags &= ~DA_FLAG_PACK_INVALID;
 549         }
 550         splx(s);
 551
 552         /* Do a read capacity */
 553         {
 554                 struct scsi_read_capacity_data *rcap;
 555                 union  ccb *ccb;
 556
 557                 rcap = malloc(sizeof(*rcap), M_TEMP, M_INTWAIT | M_ZERO);
 558
 559                 ccb = cam_periph_getccb(periph, /*priority*/1);
 560                 scsi_read_capacity(&ccb->csio,
 561                                    /*retries*/1,
 562                                    /*cbfncp*/dadone,
 563                                    MSG_SIMPLE_Q_TAG,
 564                                    rcap,
 565                                    SSD_FULL_SIZE,
 566                                    /*timeout*/60000);
 567                 ccb->ccb_h.ccb_bp = NULL;
 568
 569                 error = cam_periph_runccb(ccb, daerror, /*cam_flags*/0,
 570                                           /*sense_flags*/SF_RETRY_UA |
 571                                                          SF_RETRY_SELTO,
 572                                           &softc->device_stats);
 573
 574                 xpt_release_ccb(ccb);
 575
 576                 if (error == 0) {
 577                         dasetgeom(periph, rcap);
 578                 }
 579
 580                 free(rcap, M_TEMP);
 581         }
 582
 583         if (error == 0) {
 584                 struct ccb_getdev cgd;
 585
 586                 /* Build label for whole disk. */
 587                 label = &softc->disk.d_label;
 588                 bzero(label, sizeof(*label));
 589                 label->d_type = DTYPE_SCSI;
 590
 591                 /*
 592                  * Grab the inquiry data to get the vendor and product names.
 593                  * Put them in the typename and packname for the label.
 594                  */
 595                 xpt_setup_ccb(&cgd.ccb_h, periph->path, /*priority*/ 1);
 596                 cgd.ccb_h.func_code = XPT_GDEV_TYPE;
 597                 xpt_action((union ccb *)&cgd);
 598
 599                 strncpy(label->d_typename, cgd.inq_data.vendor,
 600                         min(SID_VENDOR_SIZE, sizeof(label->d_typename)));
 601                 strncpy(label->d_packname, cgd.inq_data.product,
 602                         min(SID_PRODUCT_SIZE, sizeof(label->d_packname)));
 603
 604                 label->d_secsize = softc->params.secsize;
 605                 label->d_nsectors = softc->params.secs_per_track;
 606                 label->d_ntracks = softc->params.heads;
 607                 label->d_ncylinders = softc->params.cylinders;
 608                 label->d_secpercyl = softc->params.heads
 609                                   * softc->params.secs_per_track;
 610                 label->d_secperunit = softc->params.sectors;
 611
 612                 if ((softc->flags & DA_FLAG_PACK_REMOVABLE) != 0 &&
 613                     (softc->quirks & DA_Q_NO_PREVENT) == 0)
 614                         daprevent(periph, PR_PREVENT);
 615
 616                 /*
 617                  * Check to see whether or not the blocksize is set yet.
 618                  * If it isn't, set it and then clear the blocksize
 619                  * unavailable flag for the device statistics.
 620                  */
 621                 if ((softc->device_stats.flags & DEVSTAT_BS_UNAVAILABLE) != 0){
 622                         softc->device_stats.block_size = softc->params.secsize;
 623                         softc->device_stats.flags &= ~DEVSTAT_BS_UNAVAILABLE;
 624                 }
 625         }
 626
 627         if (error != 0) {
 628                 if ((softc->flags & DA_FLAG_PACK_REMOVABLE) != 0 &&
 629                     (softc->quirks & DA_Q_NO_PREVENT) == 0)
 630                         daprevent(periph, PR_ALLOW);
 631                 softc->flags &= ~DA_FLAG_OPEN;
 632                 cam_periph_release(periph);
 633         }
 634         cam_periph_unlock(periph);
 635         return (error);
 636 }
 637
 638 static int
 639 daclose(dev_t dev, int flag, int fmt, struct thread *td)
 640 {
 641         struct  cam_periph *periph;
 642         struct  da_softc *softc;
 643         int     unit;
 644         int     error;
 645
 646         unit = dkunit(dev);
 647         periph = cam_extend_get(daperiphs, unit);
 648         if (periph == NULL)
 649                 return (ENXIO);
 650
 651         softc = (struct da_softc *)periph->softc;
 652
 653         if ((error = cam_periph_lock(periph, 0)) != 0) {
 654                 return (error); /* error code from tsleep */
 655         }
 656
 657         if ((softc->quirks & DA_Q_NO_SYNC_CACHE) == 0) {
 658                 union   ccb *ccb;
 659
 660                 ccb = cam_periph_getccb(periph, /*priority*/1);
 661
 662                 scsi_synchronize_cache(&ccb->csio,
 663                                        /*retries*/1,
 664                                        /*cbfcnp*/dadone,
 665                                        MSG_SIMPLE_Q_TAG,
 666                                        /*begin_lba*/0,/* Cover the whole disk */
 667                                        /*lb_count*/0,
 668                                        SSD_FULL_SIZE,
 669                                        5 * 60 * 1000);
 670
 671                 cam_periph_runccb(ccb, /*error_routine*/NULL, /*cam_flags*/0,
 672                                   /*sense_flags*/SF_RETRY_UA,
 673                                   &softc->device_stats);
 674
 675                 if ((ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
 676                         if ((ccb->ccb_h.status & CAM_STATUS_MASK) ==
 677                              CAM_SCSI_STATUS_ERROR) {
 678                                 int asc, ascq;
 679                                 int sense_key, error_code;
 680
 681                                 scsi_extract_sense(&ccb->csio.sense_data,
 682                                                    &error_code,
 683                                                    &sense_key,
 684                                                    &asc, &ascq);
 685                                 if (sense_key != SSD_KEY_ILLEGAL_REQUEST)
 686                                         scsi_sense_print(&ccb->csio);
 687                         } else {
 688                                 xpt_print_path(periph->path);
 689                                 printf("Synchronize cache failed, status "
 690                                        "== 0x%x, scsi status == 0x%x\n",
 691                                        ccb->csio.ccb_h.status,
 692                                        ccb->csio.scsi_status);
 693                         }
 694                 }
 695
 696                 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
 697                         cam_release_devq(ccb->ccb_h.path,
 698                                          /*relsim_flags*/0,
 699                                          /*reduction*/0,
 700                                          /*timeout*/0,
 701                                          /*getcount_only*/0);
 702
 703                 xpt_release_ccb(ccb);
 704
 705         }
 706
 707         if ((softc->flags & DA_FLAG_PACK_REMOVABLE) != 0) {
 708                 if ((softc->quirks & DA_Q_NO_PREVENT) == 0)
 709                         daprevent(periph, PR_ALLOW);
 710                 /*
 711                  * If we've got removeable media, mark the blocksize as
 712                  * unavailable, since it could change when new media is
 713                  * inserted.
 714                  */
 715                 softc->device_stats.flags |= DEVSTAT_BS_UNAVAILABLE;
 716         }
 717
 718         softc->flags &= ~DA_FLAG_OPEN;
 719         cam_periph_unlock(periph);
 720         cam_periph_release(periph);
 721         return (0);
 722 }
 723
 724 /*
 725  * Actually translate the requested transfer into one the physical driver
 726  * can understand.  The transfer is described by a buf and will include
 727  * only one physical transfer.
 728  */
 729 static void
 730 dastrategy(struct buf *bp)
 731 {
 732         struct cam_periph *periph;
 733         struct da_softc *softc;
 734         u_int  unit;
 735         u_int  part;
 736         int    s;
 737
 738         unit = dkunit(bp->b_dev);
 739         part = dkpart(bp->b_dev);
 740         periph = cam_extend_get(daperiphs, unit);
 741         if (periph == NULL) {
 742                 bp->b_error = ENXIO;
 743                 goto bad;
 744         }
 745         softc = (struct da_softc *)periph->softc;
 746 #if 0
 747         /*
 748          * check it's not too big a transfer for our adapter
 749          */
 750         scsi_minphys(bp,&sd_switch);
 751 #endif
 752
 753         /*
 754          * Mask interrupts so that the pack cannot be invalidated until
 755          * after we are in the queue.  Otherwise, we might not properly
 756          * clean up one of the buffers.
 757          */
 758         s = splbio();
 759
 760         /*
 761          * If the device has been made invalid, error out
 762          */
 763         if ((softc->flags & DA_FLAG_PACK_INVALID)) {
 764                 splx(s);
 765                 bp->b_error = ENXIO;
 766                 goto bad;
 767         }
 768
 769         /*
 770          * Place it in the queue of disk activities for this disk
 771          */
 772         bufqdisksort(&softc->buf_queue, bp);
 773
 774         splx(s);
 775
 776         /*
 777          * Schedule ourselves for performing the work.
 778          */
 779         xpt_schedule(periph, /* XXX priority */1);
 780
 781         return;
 782 bad:
 783         bp->b_flags |= B_ERROR;
 784
 785         /*
 786          * Correctly set the buf to indicate a completed xfer
 787          */
 788         bp->b_resid = bp->b_bcount;
 789         biodone(bp);
 790         return;
 791 }
 792
 793 /* For 2.2-stable support */
 794 #ifndef ENOIOCTL
 795 #define ENOIOCTL -1
 796 #endif
 797
 798 static int
 799 daioctl(dev_t dev, u_long cmd, caddr_t addr, int flag, struct thread *td)
 800 {
 801         struct cam_periph *periph;
 802         struct da_softc *softc;
 803         int unit;
 804         int error;
 805
 806         unit = dkunit(dev);
 807         periph = cam_extend_get(daperiphs, unit);
 808         if (periph == NULL)
 809                 return (ENXIO);
 810
 811         softc = (struct da_softc *)periph->softc;
 812
 813         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("daioctl\n"));
 814
 815         if ((error = cam_periph_lock(periph, PCATCH)) != 0) {
 816                 return (error); /* error code from tsleep */
 817         }
 818
 819         error = cam_periph_ioctl(periph, cmd, addr, daerror);
 820
 821         cam_periph_unlock(periph);
 822
 823         return (error);
 824 }
 825
 826 static int
 827 dadump(dev_t dev, u_int num, u_int blknum, u_int secsize)
 828 {
 829         struct      cam_periph *periph;
 830         struct      da_softc *softc;
 831         u_int       unit;
 832         long        blkcnt;
 833         vm_paddr_t  addr;
 834         struct      ccb_scsiio csio;
 835         int         dumppages = MAXDUMPPGS;
 836         int         i;
 837
 838         /* toss any characters present prior to dump */
 839         while (cncheckc() != -1)
 840                 ;
 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         if ((softc->flags & DA_FLAG_PACK_INVALID) != 0)
 850                 return (ENXIO);
 851
 852         addr = 0;       /* starting address */
 853         blkcnt = howmany(PAGE_SIZE, secsize);
 854
 855         while (num > 0) {
 856                 caddr_t va = NULL;
 857
 858                 if ((num / blkcnt) < dumppages)
 859                         dumppages = num / blkcnt;
 860
 861                 for (i = 0; i < dumppages; ++i) {
 862                         vm_paddr_t a = addr + (i * PAGE_SIZE);
 863                         if (is_physical_memory(a))
 864                                 va = pmap_kenter_temporary(trunc_page(a), i);
 865                         else
 866                                 va = pmap_kenter_temporary(trunc_page(0), i);
 867                 }
 868
 869                 xpt_setup_ccb(&csio.ccb_h, periph->path, /*priority*/1);
 870                 csio.ccb_h.ccb_state = DA_CCB_DUMP;
 871                 scsi_read_write(&csio,
 872                                 /*retries*/1,
 873                                 dadone,
 874                                 MSG_ORDERED_Q_TAG,
 875                                 /*read*/FALSE,
 876                                 /*byte2*/0,
 877                                 /*minimum_cmd_size*/ softc->minimum_cmd_size,
 878                                 blknum,
 879                                 blkcnt * dumppages,
 880                                 /*data_ptr*/(u_int8_t *) va,
 881                                 /*dxfer_len*/blkcnt * secsize * dumppages,
 882                                 /*sense_len*/SSD_FULL_SIZE,
 883                                 DA_DEFAULT_TIMEOUT * 1000);
 884                 xpt_polled_action((union ccb *)&csio);
 885
 886                 if ((csio.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
 887                         printf("Aborting dump due to I/O error.\n");
 888                         if ((csio.ccb_h.status & CAM_STATUS_MASK) ==
 889                              CAM_SCSI_STATUS_ERROR)
 890                                 scsi_sense_print(&csio);
 891                         else
 892                                 printf("status == 0x%x, scsi status == 0x%x\n",
 893                                        csio.ccb_h.status, csio.scsi_status);
 894                         return(EIO);
 895                 }
 896
 897                 if (dumpstatus(addr, (off_t)num * softc->params.secsize) < 0)
 898                         return (EINTR);
 899
 900                 /* update block count */
 901                 num -= blkcnt * dumppages;
 902                 blknum += blkcnt * dumppages;
 903                 addr += PAGE_SIZE * dumppages;
 904         }
 905
 906         /*
 907          * Sync the disk cache contents to the physical media.
 908          */
 909         if ((softc->quirks & DA_Q_NO_SYNC_CACHE) == 0) {
 910
 911                 xpt_setup_ccb(&csio.ccb_h, periph->path, /*priority*/1);
 912                 csio.ccb_h.ccb_state = DA_CCB_DUMP;
 913                 scsi_synchronize_cache(&csio,
 914                                        /*retries*/1,
 915                                        /*cbfcnp*/dadone,
 916                                        MSG_SIMPLE_Q_TAG,
 917                                        /*begin_lba*/0,/* Cover the whole disk */
 918                                        /*lb_count*/0,
 919                                        SSD_FULL_SIZE,
 920                                        5 * 60 * 1000);
 921                 xpt_polled_action((union ccb *)&csio);
 922
 923                 if ((csio.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
 924                         if ((csio.ccb_h.status & CAM_STATUS_MASK) ==
 925                              CAM_SCSI_STATUS_ERROR) {
 926                                 int asc, ascq;
 927                                 int sense_key, error_code;
 928
 929                                 scsi_extract_sense(&csio.sense_data,
 930                                                    &error_code,
 931                                                    &sense_key,
 932                                                    &asc, &ascq);
 933                                 if (sense_key != SSD_KEY_ILLEGAL_REQUEST)
 934                                         scsi_sense_print(&csio);
 935                         } else {
 936                                 xpt_print_path(periph->path);
 937                                 printf("Synchronize cache failed, status "
 938                                        "== 0x%x, scsi status == 0x%x\n",
 939                                        csio.ccb_h.status, csio.scsi_status);
 940                         }
 941                 }
 942         }
 943         return (0);
 944 }
 945
 946 static void
 947 dainit(void)
 948 {
 949         cam_status status;
 950         struct cam_path *path;
 951
 952         /*
 953          * Create our extend array for storing the devices we attach to.
 954          */
 955         daperiphs = cam_extend_new();
 956         SLIST_INIT(&softc_list);
 957         if (daperiphs == NULL) {
 958                 printf("da: Failed to alloc extend array!\n");
 959                 return;
 960         }
 961
 962         callout_init(&dasendorderedtag_ch);
 963
 964         /*
 965          * Install a global async callback.  This callback will
 966          * receive async callbacks like "new device found".
 967          */
 968         status = xpt_create_path(&path, /*periph*/NULL, CAM_XPT_PATH_ID,
 969                                  CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD);
 970
 971         if (status == CAM_REQ_CMP) {
 972                 struct ccb_setasync csa;
 973
 974                 xpt_setup_ccb(&csa.ccb_h, path, /*priority*/5);
 975                 csa.ccb_h.func_code = XPT_SASYNC_CB;
 976                 csa.event_enable = AC_FOUND_DEVICE;
 977                 csa.callback = daasync;
 978                 csa.callback_arg = NULL;
 979                 xpt_action((union ccb *)&csa);
 980                 status = csa.ccb_h.status;
 981                 xpt_free_path(path);
 982         }
 983
 984         if (status != CAM_REQ_CMP) {
 985                 printf("da: Failed to attach master async callback "
 986                        "due to status 0x%x!\n", status);
 987         } else {
 988
 989                 /*
 990                  * Schedule a periodic event to occasionally send an
 991                  * ordered tag to a device.
 992                  */
 993                 callout_reset(&dasendorderedtag_ch,
 994                     (DA_DEFAULT_TIMEOUT * hz) / DA_ORDEREDTAG_INTERVAL,
 995                     dasendorderedtag, NULL);
 996
 997                 /* Register our shutdown event handler */
 998                 if ((EVENTHANDLER_REGISTER(shutdown_post_sync, dashutdown,
 999                                            NULL, SHUTDOWN_PRI_DEFAULT)) == NULL)
1000                     printf("dainit: shutdown event registration failed!\n");
1001         }
1002 }
1003
1004 static void
1005 daoninvalidate(struct cam_periph *periph)
1006 {
1007         int s;
1008         struct da_softc *softc;
1009         struct buf *q_bp;
1010         struct ccb_setasync csa;
1011
1012         softc = (struct da_softc *)periph->softc;
1013
1014         /*
1015          * De-register any async callbacks.
1016          */
1017         xpt_setup_ccb(&csa.ccb_h, periph->path,
1018                       /* priority */ 5);
1019         csa.ccb_h.func_code = XPT_SASYNC_CB;
1020         csa.event_enable = 0;
1021         csa.callback = daasync;
1022         csa.callback_arg = periph;
1023         xpt_action((union ccb *)&csa);
1024
1025         softc->flags |= DA_FLAG_PACK_INVALID;
1026
1027         /*
1028          * Although the oninvalidate() routines are always called at
1029          * splsoftcam, we need to be at splbio() here to keep the buffer
1030          * queue from being modified while we traverse it.
1031          */
1032         s = splbio();
1033
1034         /*
1035          * Return all queued I/O with ENXIO.
1036          * XXX Handle any transactions queued to the card
1037          *     with XPT_ABORT_CCB.
1038          */
1039         while ((q_bp = bufq_first(&softc->buf_queue)) != NULL){
1040                 bufq_remove(&softc->buf_queue, q_bp);
1041                 q_bp->b_resid = q_bp->b_bcount;
1042                 q_bp->b_error = ENXIO;
1043                 q_bp->b_flags |= B_ERROR;
1044                 biodone(q_bp);
1045         }
1046         splx(s);
1047
1048         SLIST_REMOVE(&softc_list, softc, da_softc, links);
1049
1050         xpt_print_path(periph->path);
1051         printf("lost device\n");
1052 }
1053
1054 static void
1055 dacleanup(struct cam_periph *periph)
1056 {
1057         struct da_softc *softc;
1058
1059         softc = (struct da_softc *)periph->softc;
1060
1061         devstat_remove_entry(&softc->device_stats);
1062         cam_extend_release(daperiphs, periph->unit_number);
1063         xpt_print_path(periph->path);
1064         printf("removing device entry\n");
1065         /*
1066          * If we can't free the sysctl tree, oh well...
1067          */
1068         if ((softc->flags & DA_FLAG_SCTX_INIT) != 0
1069             && sysctl_ctx_free(&softc->sysctl_ctx) != 0) {
1070                 xpt_print_path(periph->path);
1071                 printf("can't remove sysctl context\n");
1072         }
1073         if (softc->disk.d_rawdev) {
1074                 disk_destroy(&softc->disk);
1075         }
1076         free(softc, M_DEVBUF);
1077 }
1078
1079 static void
1080 daasync(void *callback_arg, u_int32_t code,
1081         struct cam_path *path, void *arg)
1082 {
1083         struct cam_periph *periph;
1084
1085         periph = (struct cam_periph *)callback_arg;
1086         switch (code) {
1087         case AC_FOUND_DEVICE:
1088         {
1089                 struct ccb_getdev *cgd;
1090                 cam_status status;
1091
1092                 cgd = (struct ccb_getdev *)arg;
1093
1094                 if (SID_TYPE(&cgd->inq_data) != T_DIRECT
1095                     && SID_TYPE(&cgd->inq_data) != T_RBC
1096                     && SID_TYPE(&cgd->inq_data) != T_OPTICAL)
1097                         break;
1098
1099                 /*
1100                  * Allocate a peripheral instance for
1101                  * this device and start the probe
1102                  * process.
1103                  */
1104                 status = cam_periph_alloc(daregister, daoninvalidate,
1105                                           dacleanup, dastart,
1106                                           "da", CAM_PERIPH_BIO,
1107                                           cgd->ccb_h.path, daasync,
1108                                           AC_FOUND_DEVICE, cgd);
1109
1110                 if (status != CAM_REQ_CMP
1111                  && status != CAM_REQ_INPROG)
1112                         printf("daasync: Unable to attach to new device "
1113                                 "due to status 0x%x\n", status);
1114                 break;
1115         }
1116         case AC_SENT_BDR:
1117         case AC_BUS_RESET:
1118         {
1119                 struct da_softc *softc;
1120                 struct ccb_hdr *ccbh;
1121                 int s;
1122
1123                 softc = (struct da_softc *)periph->softc;
1124                 s = splsoftcam();
1125                 /*
1126                  * Don't fail on the expected unit attention
1127                  * that will occur.
1128                  */
1129                 softc->flags |= DA_FLAG_RETRY_UA;
1130                 for (ccbh = LIST_FIRST(&softc->pending_ccbs);
1131                      ccbh != NULL; ccbh = LIST_NEXT(ccbh, periph_links.le))
1132                         ccbh->ccb_state |= DA_CCB_RETRY_UA;
1133                 splx(s);
1134                 /* FALLTHROUGH*/
1135         }
1136         default:
1137                 cam_periph_async(periph, code, path, arg);
1138                 break;
1139         }
1140 }
1141
1142 static void
1143 dasysctlinit(void *context, int pending)
1144 {
1145         struct cam_periph *periph;
1146         struct da_softc *softc;
1147         char tmpstr[80], tmpstr2[80];
1148
1149         periph = (struct cam_periph *)context;
1150         softc = (struct da_softc *)periph->softc;
1151
1152         snprintf(tmpstr, sizeof(tmpstr), "CAM DA unit %d", periph->unit_number);
1153         snprintf(tmpstr2, sizeof(tmpstr2), "%d", periph->unit_number);
1154
1155         sysctl_ctx_init(&softc->sysctl_ctx);
1156         softc->flags |= DA_FLAG_SCTX_INIT;
1157         softc->sysctl_tree = SYSCTL_ADD_NODE(&softc->sysctl_ctx,
1158                 SYSCTL_STATIC_CHILDREN(_kern_cam_da), OID_AUTO, tmpstr2,
1159                 CTLFLAG_RD, 0, tmpstr);
1160         if (softc->sysctl_tree == NULL) {
1161                 printf("dasysctlinit: unable to allocate sysctl tree\n");
1162                 return;
1163         }
1164
1165         /*
1166          * Now register the sysctl handler, so the user can the value on
1167          * the fly.
1168          */
1169         SYSCTL_ADD_PROC(&softc->sysctl_ctx,SYSCTL_CHILDREN(softc->sysctl_tree),
1170                 OID_AUTO, "minimum_cmd_size", CTLTYPE_INT | CTLFLAG_RW,
1171                 &softc->minimum_cmd_size, 0, dacmdsizesysctl, "I",
1172                 "Minimum CDB size");
1173 }
1174
1175 static int
1176 dacmdsizesysctl(SYSCTL_HANDLER_ARGS)
1177 {
1178         int error, value;
1179
1180         value = *(int *)arg1;
1181
1182         error = sysctl_handle_int(oidp, &value, 0, req);
1183
1184         if ((error != 0)
1185          || (req->newptr == NULL))
1186                 return (error);
1187
1188         /*
1189          * Acceptable values here are 6, 10 or 12.  It's possible we may
1190          * support a 16 byte minimum command size in the future, since
1191          * there are now READ(16) and WRITE(16) commands defined in the
1192          * SBC-2 spec.
1193          */
1194         if (value < 6)
1195                 value = 6;
1196         else if ((value > 6)
1197               && (value <= 10))
1198                 value = 10;
1199         else if (value > 10)
1200                 value = 12;
1201
1202         *(int *)arg1 = value;
1203
1204         return (0);
1205 }
1206
1207 static cam_status
1208 daregister(struct cam_periph *periph, void *arg)
1209 {
1210         int s;
1211         struct da_softc *softc;
1212         struct ccb_setasync csa;
1213         struct ccb_pathinq cpi;
1214         struct ccb_getdev *cgd;
1215         char tmpstr[80];
1216         caddr_t match;
1217
1218         cgd = (struct ccb_getdev *)arg;
1219         if (periph == NULL) {
1220                 printf("daregister: periph was NULL!!\n");
1221                 return(CAM_REQ_CMP_ERR);
1222         }
1223
1224         if (cgd == NULL) {
1225                 printf("daregister: no getdev CCB, can't register device\n");
1226                 return(CAM_REQ_CMP_ERR);
1227         }
1228
1229         softc = malloc(sizeof(*softc), M_DEVBUF, M_INTWAIT | M_ZERO);
1230         LIST_INIT(&softc->pending_ccbs);
1231         softc->state = DA_STATE_PROBE;
1232         bufq_init(&softc->buf_queue);
1233         if (SID_IS_REMOVABLE(&cgd->inq_data))
1234                 softc->flags |= DA_FLAG_PACK_REMOVABLE;
1235         if ((cgd->inq_data.flags & SID_CmdQue) != 0)
1236                 softc->flags |= DA_FLAG_TAGGED_QUEUING;
1237
1238         periph->softc = softc;
1239
1240         cam_extend_set(daperiphs, periph->unit_number, periph);
1241
1242         /*
1243          * See if this device has any quirks.
1244          */
1245         match = cam_quirkmatch((caddr_t)&cgd->inq_data,
1246                                (caddr_t)da_quirk_table,
1247                                sizeof(da_quirk_table)/sizeof(*da_quirk_table),
1248                                sizeof(*da_quirk_table), scsi_inquiry_match);
1249
1250         if (match != NULL)
1251                 softc->quirks = ((struct da_quirk_entry *)match)->quirks;
1252         else
1253                 softc->quirks = DA_Q_NONE;
1254
1255         TASK_INIT(&softc->sysctl_task, 0, dasysctlinit, periph);
1256
1257         /* Check if the SIM does not want 6 byte commands */
1258         xpt_setup_ccb(&cpi.ccb_h, periph->path, /*priority*/1);
1259         cpi.ccb_h.func_code = XPT_PATH_INQ;
1260         xpt_action((union ccb *)&cpi);
1261         if (cpi.ccb_h.status == CAM_REQ_CMP && (cpi.hba_misc & PIM_NO_6_BYTE))
1262                 softc->quirks |= DA_Q_NO_6_BYTE;
1263
1264         /*
1265          * RBC devices don't have to support READ(6), only READ(10).
1266          */
1267         if (softc->quirks & DA_Q_NO_6_BYTE || SID_TYPE(&cgd->inq_data) == T_RBC)
1268                 softc->minimum_cmd_size = 10;
1269         else
1270                 softc->minimum_cmd_size = 6;
1271
1272         /*
1273          * Load the user's default, if any.
1274          */
1275         snprintf(tmpstr, sizeof(tmpstr), "kern.cam.da.%d.minimum_cmd_size",
1276                  periph->unit_number);
1277         TUNABLE_INT_FETCH(tmpstr, &softc->minimum_cmd_size);
1278
1279         /*
1280          * 6, 10 and 12 are the currently permissible values.
1281          */
1282         if (softc->minimum_cmd_size < 6)
1283                 softc->minimum_cmd_size = 6;
1284         else if ((softc->minimum_cmd_size > 6)
1285               && (softc->minimum_cmd_size <= 10))
1286                 softc->minimum_cmd_size = 10;
1287         else if (softc->minimum_cmd_size > 12)
1288                 softc->minimum_cmd_size = 12;
1289
1290         /*
1291          * Block our timeout handler while we
1292          * add this softc to the dev list.
1293          */
1294         s = splsoftclock();
1295         SLIST_INSERT_HEAD(&softc_list, softc, links);
1296         splx(s);
1297
1298         /*
1299          * The DA driver supports a blocksize, but
1300          * we don't know the blocksize until we do
1301          * a read capacity.  So, set a flag to
1302          * indicate that the blocksize is
1303          * unavailable right now.  We'll clear the
1304          * flag as soon as we've done a read capacity.
1305          */
1306         devstat_add_entry(&softc->device_stats, "da",
1307                           periph->unit_number, 0,
1308                           DEVSTAT_BS_UNAVAILABLE,
1309                           SID_TYPE(&cgd->inq_data) | DEVSTAT_TYPE_IF_SCSI,
1310                           DEVSTAT_PRIORITY_DISK);
1311
1312         /*
1313          * Register this media as a disk
1314          */
1315         disk_create(periph->unit_number, &softc->disk, 0, &da_cdevsw);
1316
1317         /*
1318          * Add async callbacks for bus reset and
1319          * bus device reset calls.  I don't bother
1320          * checking if this fails as, in most cases,
1321          * the system will function just fine without
1322          * them and the only alternative would be to
1323          * not attach the device on failure.
1324          */
1325         xpt_setup_ccb(&csa.ccb_h, periph->path, /*priority*/5);
1326         csa.ccb_h.func_code = XPT_SASYNC_CB;
1327         csa.event_enable = AC_SENT_BDR | AC_BUS_RESET | AC_LOST_DEVICE;
1328         csa.callback = daasync;
1329         csa.callback_arg = periph;
1330         xpt_action((union ccb *)&csa);
1331         /*
1332          * Lock this peripheral until we are setup.
1333          * This first call can't block
1334          */
1335         (void)cam_periph_lock(periph, 0);
1336         xpt_schedule(periph, /*priority*/5);
1337
1338         return(CAM_REQ_CMP);
1339 }
1340
1341 static void
1342 dastart(struct cam_periph *periph, union ccb *start_ccb)
1343 {
1344         struct da_softc *softc;
1345
1346         softc = (struct da_softc *)periph->softc;
1347
1348
1349         switch (softc->state) {
1350         case DA_STATE_NORMAL:
1351         {
1352                 /* Pull a buffer from the queue and get going on it */
1353                 struct buf *bp;
1354                 int s;
1355
1356                 /*
1357                  * See if there is a buf with work for us to do..
1358                  */
1359                 s = splbio();
1360                 bp = bufq_first(&softc->buf_queue);
1361                 if (periph->immediate_priority <= periph->pinfo.priority) {
1362                         CAM_DEBUG_PRINT(CAM_DEBUG_SUBTRACE,
1363                                         ("queuing for immediate ccb\n"));
1364                         start_ccb->ccb_h.ccb_state = DA_CCB_WAITING;
1365                         SLIST_INSERT_HEAD(&periph->ccb_list, &start_ccb->ccb_h,
1366                                           periph_links.sle);
1367                         periph->immediate_priority = CAM_PRIORITY_NONE;
1368                         splx(s);
1369                         wakeup(&periph->ccb_list);
1370                 } else if (bp == NULL) {
1371                         splx(s);
1372                         xpt_release_ccb(start_ccb);
1373                 } else {
1374                         int oldspl;
1375                         u_int8_t tag_code;
1376
1377                         bufq_remove(&softc->buf_queue, bp);
1378
1379                         devstat_start_transaction(&softc->device_stats);
1380
1381                         if ((bp->b_flags & B_ORDERED) != 0
1382                          || (softc->flags & DA_FLAG_NEED_OTAG) != 0) {
1383                                 softc->flags &= ~DA_FLAG_NEED_OTAG;
1384                                 softc->ordered_tag_count++;
1385                                 tag_code = MSG_ORDERED_Q_TAG;
1386                         } else {
1387                                 tag_code = MSG_SIMPLE_Q_TAG;
1388                         }
1389                         scsi_read_write(&start_ccb->csio,
1390                                         /*retries*/da_retry_count,
1391                                         dadone,
1392                                         tag_code,
1393                                         bp->b_flags & B_READ,
1394                                         /*byte2*/0,
1395                                         softc->minimum_cmd_size,
1396                                         bp->b_pblkno,
1397                                         bp->b_bcount / softc->params.secsize,
1398                                         bp->b_data,
1399                                         bp->b_bcount,
1400                                         /*sense_len*/SSD_FULL_SIZE,
1401                                         da_default_timeout * 1000);
1402                         start_ccb->ccb_h.ccb_state = DA_CCB_BUFFER_IO;
1403
1404                         /*
1405                          * Block out any asyncronous callbacks
1406                          * while we touch the pending ccb list.
1407                          */
1408                         oldspl = splcam();
1409                         LIST_INSERT_HEAD(&softc->pending_ccbs,
1410                                          &start_ccb->ccb_h, periph_links.le);
1411                         splx(oldspl);
1412
1413                         /* We expect a unit attention from this device */
1414                         if ((softc->flags & DA_FLAG_RETRY_UA) != 0) {
1415                                 start_ccb->ccb_h.ccb_state |= DA_CCB_RETRY_UA;
1416                                 softc->flags &= ~DA_FLAG_RETRY_UA;
1417                         }
1418
1419                         start_ccb->ccb_h.ccb_bp = bp;
1420                         bp = bufq_first(&softc->buf_queue);
1421                         splx(s);
1422
1423                         xpt_action(start_ccb);
1424                 }
1425
1426                 if (bp != NULL) {
1427                         /* Have more work to do, so ensure we stay scheduled */
1428                         xpt_schedule(periph, /* XXX priority */1);
1429                 }
1430                 break;
1431         }
1432         case DA_STATE_PROBE:
1433         {
1434                 struct ccb_scsiio *csio;
1435                 struct scsi_read_capacity_data *rcap;
1436
1437                 rcap = malloc(sizeof(*rcap), M_TEMP, M_INTWAIT | M_ZERO);
1438                 csio = &start_ccb->csio;
1439                 scsi_read_capacity(csio,
1440                                    /*retries*/4,
1441                                    dadone,
1442                                    MSG_SIMPLE_Q_TAG,
1443                                    rcap,
1444                                    SSD_FULL_SIZE,
1445                                    /*timeout*/5000);
1446                 start_ccb->ccb_h.ccb_bp = NULL;
1447                 start_ccb->ccb_h.ccb_state = DA_CCB_PROBE;
1448                 xpt_action(start_ccb);
1449                 break;
1450         }
1451         }
1452 }
1453
1454 static int
1455 cmd6workaround(union ccb *ccb)
1456 {
1457         struct scsi_rw_6 cmd6;
1458         struct scsi_rw_10 *cmd10;
1459         struct da_softc *softc;
1460         u_int8_t *cdb;
1461         int frozen;
1462
1463         cdb = ccb->csio.cdb_io.cdb_bytes;
1464
1465         /* Translation only possible if CDB is an array and cmd is R/W6 */
1466         if ((ccb->ccb_h.flags & CAM_CDB_POINTER) != 0 ||
1467             (*cdb != READ_6 && *cdb != WRITE_6))
1468                 return 0;
1469
1470         xpt_print_path(ccb->ccb_h.path);
1471         printf("READ(6)/WRITE(6) not supported, "
1472                "increasing minimum_cmd_size to 10.\n");
1473         softc = (struct da_softc *)xpt_path_periph(ccb->ccb_h.path)->softc;
1474         softc->minimum_cmd_size = 10;
1475
1476         bcopy(cdb, &cmd6, sizeof(struct scsi_rw_6));
1477         cmd10 = (struct scsi_rw_10 *)cdb;
1478         cmd10->opcode = (cmd6.opcode == READ_6) ? READ_10 : WRITE_10;
1479         cmd10->byte2 = 0;
1480         scsi_ulto4b(scsi_3btoul(cmd6.addr), cmd10->addr);
1481         cmd10->reserved = 0;
1482         scsi_ulto2b(cmd6.length, cmd10->length);
1483         cmd10->control = cmd6.control;
1484         ccb->csio.cdb_len = sizeof(*cmd10);
1485
1486         /* Requeue request, unfreezing queue if necessary */
1487         frozen = (ccb->ccb_h.status & CAM_DEV_QFRZN) != 0;
1488         ccb->ccb_h.status = CAM_REQUEUE_REQ;
1489         xpt_action(ccb);
1490         if (frozen) {
1491                 cam_release_devq(ccb->ccb_h.path,
1492                                  /*relsim_flags*/0,
1493                                  /*reduction*/0,
1494                                  /*timeout*/0,
1495                                  /*getcount_only*/0);
1496         }
1497         return (ERESTART);
1498 }
1499
1500 static void
1501 dadone(struct cam_periph *periph, union ccb *done_ccb)
1502 {
1503         struct da_softc *softc;
1504         struct ccb_scsiio *csio;
1505
1506         softc = (struct da_softc *)periph->softc;
1507         csio = &done_ccb->csio;
1508         switch (csio->ccb_h.ccb_state & DA_CCB_TYPE_MASK) {
1509         case DA_CCB_BUFFER_IO:
1510         {
1511                 struct buf *bp;
1512                 int    oldspl;
1513
1514                 bp = (struct buf *)done_ccb->ccb_h.ccb_bp;
1515                 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1516                         int error;
1517                         int s;
1518                         int sf;
1519
1520                         if ((csio->ccb_h.ccb_state & DA_CCB_RETRY_UA) != 0)
1521                                 sf = SF_RETRY_UA;
1522                         else
1523                                 sf = 0;
1524
1525                         /* Retry selection timeouts */
1526                         sf |= SF_RETRY_SELTO;
1527
1528                         if ((error = daerror(done_ccb, 0, sf)) == ERESTART) {
1529                                 /*
1530                                  * A retry was scheuled, so
1531                                  * just return.
1532                                  */
1533                                 return;
1534                         }
1535                         if (error != 0) {
1536                                 struct buf *q_bp;
1537
1538                                 s = splbio();
1539
1540                                 if (error == ENXIO) {
1541                                         /*
1542                                          * Catastrophic error.  Mark our pack as
1543                                          * invalid.
1544                                          */
1545                                         /* XXX See if this is really a media
1546                                          *     change first.
1547                                          */
1548                                         xpt_print_path(periph->path);
1549                                         printf("Invalidating pack\n");
1550                                         softc->flags |= DA_FLAG_PACK_INVALID;
1551                                 }
1552
1553                                 /*
1554                                  * return all queued I/O with EIO, so that
1555                                  * the client can retry these I/Os in the
1556                                  * proper order should it attempt to recover.
1557                                  */
1558                                 while ((q_bp = bufq_first(&softc->buf_queue))
1559                                         != NULL) {
1560                                         bufq_remove(&softc->buf_queue, q_bp);
1561                                         q_bp->b_resid = q_bp->b_bcount;
1562                                         q_bp->b_error = EIO;
1563                                         q_bp->b_flags |= B_ERROR;
1564                                         biodone(q_bp);
1565                                 }
1566                                 splx(s);
1567                                 bp->b_error = error;
1568                                 bp->b_resid = bp->b_bcount;
1569                                 bp->b_flags |= B_ERROR;
1570                         } else {
1571                                 bp->b_resid = csio->resid;
1572                                 bp->b_error = 0;
1573                                 if (bp->b_resid != 0)
1574                                         bp->b_flags |= B_ERROR;
1575                         }
1576                         if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
1577                                 cam_release_devq(done_ccb->ccb_h.path,
1578                                                  /*relsim_flags*/0,
1579                                                  /*reduction*/0,
1580                                                  /*timeout*/0,
1581                                                  /*getcount_only*/0);
1582                 } else {
1583                         bp->b_resid = csio->resid;
1584                         if (csio->resid > 0)
1585                                 bp->b_flags |= B_ERROR;
1586                 }
1587
1588                 /*
1589                  * Block out any asyncronous callbacks
1590                  * while we touch the pending ccb list.
1591                  */
1592                 oldspl = splcam();
1593                 LIST_REMOVE(&done_ccb->ccb_h, periph_links.le);
1594                 splx(oldspl);
1595
1596                 if (softc->device_stats.busy_count == 0)
1597                         softc->flags |= DA_FLAG_WENT_IDLE;
1598
1599                 devstat_end_transaction_buf(&softc->device_stats, bp);
1600                 biodone(bp);
1601                 break;
1602         }
1603         case DA_CCB_PROBE:
1604         {
1605                 struct     scsi_read_capacity_data *rdcap;
1606                 char       announce_buf[80];
1607
1608                 rdcap = (struct scsi_read_capacity_data *)csio->data_ptr;
1609
1610                 if ((csio->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP) {
1611                         struct disk_params *dp;
1612
1613                         dasetgeom(periph, rdcap);
1614                         dp = &softc->params;
1615                         snprintf(announce_buf, sizeof(announce_buf),
1616                                 "%luMB (%u %u byte sectors: %dH %dS/T %dC)",
1617                                 (unsigned long) (((u_int64_t)dp->secsize *
1618                                 dp->sectors) / (1024*1024)), dp->sectors,
1619                                 dp->secsize, dp->heads, dp->secs_per_track,
1620                                 dp->cylinders);
1621                 } else {
1622                         int     error;
1623
1624                         announce_buf[0] = '\0';
1625
1626                         /*
1627                          * Retry any UNIT ATTENTION type errors.  They
1628                          * are expected at boot.
1629                          */
1630                         error = daerror(done_ccb, 0, SF_RETRY_UA |
1631                                         SF_RETRY_SELTO | SF_NO_PRINT);
1632                         if (error == ERESTART) {
1633                                 /*
1634                                  * A retry was scheuled, so
1635                                  * just return.
1636                                  */
1637                                 return;
1638                         } else if (error != 0) {
1639                                 struct scsi_sense_data *sense;
1640                                 int asc, ascq;
1641                                 int sense_key, error_code;
1642                                 int have_sense;
1643                                 cam_status status;
1644                                 struct ccb_getdev cgd;
1645
1646                                 /* Don't wedge this device's queue */
1647                                 cam_release_devq(done_ccb->ccb_h.path,
1648                                                  /*relsim_flags*/0,
1649                                                  /*reduction*/0,
1650                                                  /*timeout*/0,
1651                                                  /*getcount_only*/0);
1652
1653                                 status = done_ccb->ccb_h.status;
1654
1655                                 xpt_setup_ccb(&cgd.ccb_h,
1656                                               done_ccb->ccb_h.path,
1657                                               /* priority */ 1);
1658                                 cgd.ccb_h.func_code = XPT_GDEV_TYPE;
1659                                 xpt_action((union ccb *)&cgd);
1660
1661                                 if (((csio->ccb_h.flags & CAM_SENSE_PHYS) != 0)
1662                                  || ((csio->ccb_h.flags & CAM_SENSE_PTR) != 0)
1663                                  || ((status & CAM_AUTOSNS_VALID) == 0))
1664                                         have_sense = FALSE;
1665                                 else
1666                                         have_sense = TRUE;
1667
1668                                 if (have_sense) {
1669                                         sense = &csio->sense_data;
1670                                         scsi_extract_sense(sense, &error_code,
1671                                                            &sense_key,
1672                                                            &asc, &ascq);
1673                                 }
1674                                 /*
1675                                  * Attach to anything that claims to be a
1676                                  * direct access or optical disk device,
1677                                  * as long as it doesn't return a "Logical
1678                                  * unit not supported" (0x25) error.
1679                                  */
1680                                 if ((have_sense) && (asc != 0x25)
1681                                  && (error_code == SSD_CURRENT_ERROR))
1682                                         snprintf(announce_buf,
1683                                             sizeof(announce_buf),
1684                                                 "Attempt to query device "
1685                                                 "size failed: %s, %s",
1686                                                 scsi_sense_key_text[sense_key],
1687                                                 scsi_sense_desc(asc,ascq,
1688                                                                 &cgd.inq_data));
1689                                 else {
1690                                         if (have_sense)
1691                                                 scsi_sense_print(
1692                                                         &done_ccb->csio);
1693                                         else {
1694                                                 xpt_print_path(periph->path);
1695                                                 printf("got CAM status %#x\n",
1696                                                        done_ccb->ccb_h.status);
1697                                         }
1698
1699                                         xpt_print_path(periph->path);
1700                                         printf("fatal error, failed"
1701                                                " to attach to device\n");
1702
1703                                         /*
1704                                          * Free up resources.
1705                                          */
1706                                         cam_periph_invalidate(periph);
1707                                 }
1708                         }
1709                 }
1710                 free(rdcap, M_TEMP);
1711                 if (announce_buf[0] != '\0') {
1712                         xpt_announce_periph(periph, announce_buf);
1713                         /*
1714                          * Create our sysctl variables, now that we know
1715                          * we have successfully attached.
1716                          */
1717                         taskqueue_enqueue(taskqueue_thread,&softc->sysctl_task);
1718                 }
1719                 softc->state = DA_STATE_NORMAL;
1720                 /*
1721                  * Since our peripheral may be invalidated by an error
1722                  * above or an external event, we must release our CCB
1723                  * before releasing the probe lock on the peripheral.
1724                  * The peripheral will only go away once the last lock
1725                  * is removed, and we need it around for the CCB release
1726                  * operation.
1727                  */
1728                 xpt_release_ccb(done_ccb);
1729                 cam_periph_unlock(periph);
1730                 return;
1731         }
1732         case DA_CCB_WAITING:
1733         {
1734                 /* Caller will release the CCB */
1735                 wakeup(&done_ccb->ccb_h.cbfcnp);
1736                 return;
1737         }
1738         case DA_CCB_DUMP:
1739                 /* No-op.  We're polling */
1740                 return;
1741         default:
1742                 break;
1743         }
1744         xpt_release_ccb(done_ccb);
1745 }
1746
1747 static int
1748 daerror(union ccb *ccb, u_int32_t cam_flags, u_int32_t sense_flags)
1749 {
1750         struct da_softc   *softc;
1751         struct cam_periph *periph;
1752         int error;
1753
1754         periph = xpt_path_periph(ccb->ccb_h.path);
1755         softc = (struct da_softc *)periph->softc;
1756
1757         /*
1758          * Automatically detect devices that do not support
1759          * READ(6)/WRITE(6) and upgrade to using 10 byte cdbs.
1760          */
1761         error = 0;
1762         if ((ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_INVALID) {
1763                 error = cmd6workaround(ccb);
1764         } else if (((ccb->ccb_h.status & CAM_STATUS_MASK) ==
1765                    CAM_SCSI_STATUS_ERROR)
1766          && (ccb->ccb_h.status & CAM_AUTOSNS_VALID)
1767          && (ccb->csio.scsi_status == SCSI_STATUS_CHECK_COND)
1768          && ((ccb->ccb_h.flags & CAM_SENSE_PHYS) == 0)
1769          && ((ccb->ccb_h.flags & CAM_SENSE_PTR) == 0)) {
1770                 int sense_key, error_code, asc, ascq;
1771
1772                 scsi_extract_sense(&ccb->csio.sense_data,
1773                                    &error_code, &sense_key, &asc, &ascq);
1774                 if (sense_key == SSD_KEY_ILLEGAL_REQUEST)
1775                         error = cmd6workaround(ccb);
1776         }
1777         if (error == ERESTART)
1778                 return (ERESTART);
1779
1780         /*
1781          * XXX
1782          * Until we have a better way of doing pack validation,
1783          * don't treat UAs as errors.
1784          */
1785         sense_flags |= SF_RETRY_UA;
1786         return(cam_periph_error(ccb, cam_flags, sense_flags,
1787                                 &softc->saved_ccb));
1788 }
1789
1790 static void
1791 daprevent(struct cam_periph *periph, int action)
1792 {
1793         struct  da_softc *softc;
1794         union   ccb *ccb;
1795         int     error;
1796
1797         softc = (struct da_softc *)periph->softc;
1798
1799         if (((action == PR_ALLOW)
1800           && (softc->flags & DA_FLAG_PACK_LOCKED) == 0)
1801          || ((action == PR_PREVENT)
1802           && (softc->flags & DA_FLAG_PACK_LOCKED) != 0)) {
1803                 return;
1804         }
1805
1806         ccb = cam_periph_getccb(periph, /*priority*/1);
1807
1808         scsi_prevent(&ccb->csio,
1809                      /*retries*/1,
1810                      /*cbcfp*/dadone,
1811                      MSG_SIMPLE_Q_TAG,
1812                      action,
1813                      SSD_FULL_SIZE,
1814                      5000);
1815
1816         error = cam_periph_runccb(ccb, /*error_routine*/NULL, /*cam_flags*/0,
1817                                   /*sense_flags*/0, &softc->device_stats);
1818
1819         if (error == 0) {
1820                 if (action == PR_ALLOW)
1821                         softc->flags &= ~DA_FLAG_PACK_LOCKED;
1822                 else
1823                         softc->flags |= DA_FLAG_PACK_LOCKED;
1824         }
1825
1826         xpt_release_ccb(ccb);
1827 }
1828
1829 static void
1830 dasetgeom(struct cam_periph *periph, struct scsi_read_capacity_data * rdcap)
1831 {
1832         struct ccb_calc_geometry ccg;
1833         struct da_softc *softc;
1834         struct disk_params *dp;
1835
1836         softc = (struct da_softc *)periph->softc;
1837
1838         dp = &softc->params;
1839         dp->secsize = scsi_4btoul(rdcap->length);
1840         dp->sectors = scsi_4btoul(rdcap->addr) + 1;
1841         /*
1842          * Have the controller provide us with a geometry
1843          * for this disk.  The only time the geometry
1844          * matters is when we boot and the controller
1845          * is the only one knowledgeable enough to come
1846          * up with something that will make this a bootable
1847          * device.
1848          */
1849         xpt_setup_ccb(&ccg.ccb_h, periph->path, /*priority*/1);
1850         ccg.ccb_h.func_code = XPT_CALC_GEOMETRY;
1851         ccg.block_size = dp->secsize;
1852         ccg.volume_size = dp->sectors;
1853         ccg.heads = 0;
1854         ccg.secs_per_track = 0;
1855         ccg.cylinders = 0;
1856         xpt_action((union ccb*)&ccg);
1857         dp->heads = ccg.heads;
1858         dp->secs_per_track = ccg.secs_per_track;
1859         dp->cylinders = ccg.cylinders;
1860 }
1861
1862 static void
1863 dasendorderedtag(void *arg)
1864 {
1865         struct da_softc *softc;
1866         int s;
1867
1868         for (softc = SLIST_FIRST(&softc_list);
1869              softc != NULL;
1870              softc = SLIST_NEXT(softc, links)) {
1871                 s = splsoftcam();
1872                 if ((softc->ordered_tag_count == 0)
1873                  && ((softc->flags & DA_FLAG_WENT_IDLE) == 0)) {
1874                         softc->flags |= DA_FLAG_NEED_OTAG;
1875                 }
1876                 if (softc->device_stats.busy_count > 0)
1877                         softc->flags &= ~DA_FLAG_WENT_IDLE;
1878
1879                 softc->ordered_tag_count = 0;
1880                 splx(s);
1881         }
1882         /* Queue us up again */
1883         callout_reset(&dasendorderedtag_ch,
1884             (da_default_timeout * hz) / DA_ORDEREDTAG_INTERVAL,
1885             dasendorderedtag, NULL);
1886 }
1887
1888 /*
1889  * Step through all DA peripheral drivers, and if the device is still open,
1890  * sync the disk cache to physical media.
1891  */
1892 static void
1893 dashutdown(void * arg, int howto)
1894 {
1895         struct cam_periph *periph;
1896         struct da_softc *softc;
1897
1898         for (periph = TAILQ_FIRST(&dadriver.units); periph != NULL;
1899              periph = TAILQ_NEXT(periph, unit_links)) {
1900                 union ccb ccb;
1901                 softc = (struct da_softc *)periph->softc;
1902
1903                 /*
1904                  * We only sync the cache if the drive is still open, and
1905                  * if the drive is capable of it..
1906                  */
1907                 if (((softc->flags & DA_FLAG_OPEN) == 0)
1908                  || (softc->quirks & DA_Q_NO_SYNC_CACHE))
1909                         continue;
1910
1911                 xpt_setup_ccb(&ccb.ccb_h, periph->path, /*priority*/1);
1912
1913                 ccb.ccb_h.ccb_state = DA_CCB_DUMP;
1914                 scsi_synchronize_cache(&ccb.csio,
1915                                        /*retries*/1,
1916                                        /*cbfcnp*/dadone,
1917                                        MSG_SIMPLE_Q_TAG,
1918                                        /*begin_lba*/0, /* whole disk */
1919                                        /*lb_count*/0,
1920                                        SSD_FULL_SIZE,
1921                                        5 * 60 * 1000);
1922
1923                 xpt_polled_action(&ccb);
1924
1925                 if ((ccb.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1926                         if (((ccb.ccb_h.status & CAM_STATUS_MASK) ==
1927                              CAM_SCSI_STATUS_ERROR)
1928                          && (ccb.csio.scsi_status == SCSI_STATUS_CHECK_COND)){
1929                                 int error_code, sense_key, asc, ascq;
1930
1931                                 scsi_extract_sense(&ccb.csio.sense_data,
1932                                                    &error_code, &sense_key,
1933                                                    &asc, &ascq);
1934
1935                                 if (sense_key != SSD_KEY_ILLEGAL_REQUEST)
1936                                         scsi_sense_print(&ccb.csio);
1937                         } else {
1938                                 xpt_print_path(periph->path);
1939                                 printf("Synchronize cache failed, status "
1940                                        "== 0x%x, scsi status == 0x%x\n",
1941                                        ccb.ccb_h.status, ccb.csio.scsi_status);
1942                         }
1943                 }
1944
1945                 if ((ccb.ccb_h.status & CAM_DEV_QFRZN) != 0)
1946                         cam_release_devq(ccb.ccb_h.path,
1947                                          /*relsim_flags*/0,
1948                                          /*reduction*/0,
1949                                          /*timeout*/0,
1950                                          /*getcount_only*/0);
1951
1952         }
1953 }
1954
1955 #else /* !_KERNEL */
1956
1957 /*
1958  * XXX This is only left out of the kernel build to silence warnings.  If,
1959  * for some reason this function is used in the kernel, the ifdefs should
1960  * be moved so it is included both in the kernel and userland.
1961  */
1962 void
1963 scsi_format_unit(struct ccb_scsiio *csio, u_int32_t retries,
1964                  void (*cbfcnp)(struct cam_periph *, union ccb *),
1965                  u_int8_t tag_action, u_int8_t byte2, u_int16_t ileave,
1966                  u_int8_t *data_ptr, u_int32_t dxfer_len, u_int8_t sense_len,
1967                  u_int32_t timeout)
1968 {
1969         struct scsi_format_unit *scsi_cmd;
1970
1971         scsi_cmd = (struct scsi_format_unit *)&csio->cdb_io.cdb_bytes;
1972         scsi_cmd->opcode = FORMAT_UNIT;
1973         scsi_cmd->byte2 = byte2;
1974         scsi_ulto2b(ileave, scsi_cmd->interleave);
1975
1976         cam_fill_csio(csio,
1977                       retries,
1978                       cbfcnp,
1979                       /*flags*/ (dxfer_len > 0) ? CAM_DIR_OUT : CAM_DIR_NONE,
1980                       tag_action,
1981                       data_ptr,
1982                       dxfer_len,
1983                       sense_len,
1984                       sizeof(*scsi_cmd),
1985                       timeout);
1986 }
1987
1988 #endif /* _KERNEL */