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 1.15 2004/03/15 02:27:56 dillon 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 #include <sys/disk.h>
  50 #include <sys/eventhandler.h>
  51 #ifdef _KERNEL
  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                  * FujiFilm Camera
 339                  */
 340                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "FUJIFILMUSB-DRIVEUNIT",
 341                  "USB-DRIVEUNIT", "*"},
 342                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 343         },
 344         {
 345                 /*
 346                  * Minolta Dimage E203
 347                  */
 348                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "MINOLTA", "DiMAGE E203", "*"},
 349                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 350         },
 351         {
 352                 /*
 353                  * Apacer HandyDrive
 354                  * PR: kern/43627
 355                  */
 356                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Apacer", "HandyDrive", "*"},
 357                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 358         },
 359         {
 360                 /*
 361                  * Daisy Technology PhotoClip on Zoran chip
 362                  * PR: kern/43580
 363                  */
 364                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "ZORAN", "COACH", "*"},
 365                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 366         },
 367         {
 368                 /*
 369                  * Sony USB Key-Storage
 370                  * PR: kern/46386
 371                  */
 372                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Sony", "Storage Media", "*"},
 373                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 374         },
 375 #endif /* DA_OLD_QUIRKS */
 376         {
 377                 /*
 378                  * EXATELECOM (Sigmatel) i-Bead 100/105 USB Flash MP3 Player
 379                  * PR: kern/51675
 380                  */
 381                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "EXATEL", "i-BEAD10*", "*"},
 382                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 383         },
 384         {
 385                 /*
 386                  * Jungsoft NEXDISK USB flash key
 387                  * PR: kern/54737
 388                  */
 389                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "JUNGSOFT", "NEXDISK*", "*"},
 390                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 391         },
 392         {
 393                 /*
 394                  * Creative Nomad MUVO mp3 player (USB)
 395                  * PR: kern/53094
 396                  */
 397                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "CREATIVE", "NOMAD_MUVO", "*"},
 398                 /*quirks*/ DA_Q_NO_SYNC_CACHE|DA_Q_NO_PREVENT
 399         },
 400 };
 401
 402 static  d_open_t        daopen;
 403 static  d_close_t       daclose;
 404 static  d_strategy_t    dastrategy;
 405 static  d_ioctl_t       daioctl;
 406 static  d_dump_t        dadump;
 407 static  periph_init_t   dainit;
 408 static  void            daasync(void *callback_arg, u_int32_t code,
 409                                 struct cam_path *path, void *arg);
 410 static  int             dacmdsizesysctl(SYSCTL_HANDLER_ARGS);
 411 static  periph_ctor_t   daregister;
 412 static  periph_dtor_t   dacleanup;
 413 static  periph_start_t  dastart;
 414 static  periph_oninv_t  daoninvalidate;
 415 static  void            dadone(struct cam_periph *periph,
 416                                union ccb *done_ccb);
 417 static  int             daerror(union ccb *ccb, u_int32_t cam_flags,
 418                                 u_int32_t sense_flags);
 419 static void             daprevent(struct cam_periph *periph, int action);
 420 static void             dasetgeom(struct cam_periph *periph,
 421                                   struct scsi_read_capacity_data * rdcap);
 422 static timeout_t        dasendorderedtag;
 423 static void             dashutdown(void *arg, int howto);
 424
 425 #ifndef DA_DEFAULT_TIMEOUT
 426 #define DA_DEFAULT_TIMEOUT 60   /* Timeout in seconds */
 427 #endif
 428
 429 #ifndef DA_DEFAULT_RETRY
 430 #define DA_DEFAULT_RETRY        4
 431 #endif
 432
 433 static int da_retry_count = DA_DEFAULT_RETRY;
 434 static int da_default_timeout = DA_DEFAULT_TIMEOUT;
 435
 436 SYSCTL_NODE(_kern_cam, OID_AUTO, da, CTLFLAG_RD, 0,
 437             "CAM Direct Access Disk driver");
 438 SYSCTL_INT(_kern_cam_da, OID_AUTO, retry_count, CTLFLAG_RW,
 439            &da_retry_count, 0, "Normal I/O retry count");
 440 TUNABLE_INT("kern.cam.da.retry_count", &da_retry_count);
 441 SYSCTL_INT(_kern_cam_da, OID_AUTO, default_timeout, CTLFLAG_RW,
 442            &da_default_timeout, 0, "Normal I/O timeout (in seconds)");
 443 TUNABLE_INT("kern.cam.da.default_timeout", &da_default_timeout);
 444
 445 /*
 446  * DA_ORDEREDTAG_INTERVAL determines how often, relative
 447  * to the default timeout, we check to see whether an ordered
 448  * tagged transaction is appropriate to prevent simple tag
 449  * starvation.  Since we'd like to ensure that there is at least
 450  * 1/2 of the timeout length left for a starved transaction to
 451  * complete after we've sent an ordered tag, we must poll at least
 452  * four times in every timeout period.  This takes care of the worst
 453  * case where a starved transaction starts during an interval that
 454  * meets the requirement "don't send an ordered tag" test so it takes
 455  * us two intervals to determine that a tag must be sent.
 456  */
 457 #ifndef DA_ORDEREDTAG_INTERVAL
 458 #define DA_ORDEREDTAG_INTERVAL 4
 459 #endif
 460
 461 static struct periph_driver dadriver =
 462 {
 463         dainit, "da",
 464         TAILQ_HEAD_INITIALIZER(dadriver.units), /* generation */ 0
 465 };
 466
 467 DATA_SET(periphdriver_set, dadriver);
 468
 469 /* For 2.2-stable support */
 470 #ifndef D_DISK
 471 #define D_DISK 0
 472 #endif
 473
 474 static struct cdevsw da_cdevsw = {
 475         /* name */      "da",
 476         /* maj */       DA_CDEV_MAJOR,
 477         /* flags */     D_DISK,
 478         /* port */      NULL,
 479         /* autoq */     0,
 480
 481         /* open */      daopen,
 482         /* close */     daclose,
 483         /* read */      physread,
 484         /* write */     physwrite,
 485         /* ioctl */     daioctl,
 486         /* poll */      nopoll,
 487         /* mmap */      nommap,
 488         /* strategy */  dastrategy,
 489         /* dump */      dadump,
 490         /* psize */     nopsize
 491 };
 492
 493 static SLIST_HEAD(,da_softc) softc_list;
 494 static struct extend_array *daperiphs;
 495
 496 static int
 497 daopen(dev_t dev, int flags, int fmt, struct thread *td)
 498 {
 499         struct cam_periph *periph;
 500         struct da_softc *softc;
 501         struct disklabel *label;
 502         int unit;
 503         int part;
 504         int error;
 505         int s;
 506
 507         unit = dkunit(dev);
 508         part = dkpart(dev);
 509         periph = cam_extend_get(daperiphs, unit);
 510         if (periph == NULL)
 511                 return (ENXIO);
 512
 513         softc = (struct da_softc *)periph->softc;
 514
 515         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE,
 516             ("daopen: dev=%s (unit %d , partition %d)\n", devtoname(dev),
 517              unit, part));
 518
 519         if ((error = cam_periph_lock(periph, PCATCH)) != 0) {
 520                 return (error); /* error code from tsleep */
 521         }
 522
 523         if (cam_periph_acquire(periph) != CAM_REQ_CMP)
 524                 return(ENXIO);
 525         softc->flags |= DA_FLAG_OPEN;
 526
 527         s = splsoftcam();
 528         if ((softc->flags & DA_FLAG_PACK_INVALID) != 0) {
 529                 /* Invalidate our pack information. */
 530                 disk_invalidate(&softc->disk);
 531                 softc->flags &= ~DA_FLAG_PACK_INVALID;
 532         }
 533         splx(s);
 534
 535         /* Do a read capacity */
 536         {
 537                 struct scsi_read_capacity_data *rcap;
 538                 union  ccb *ccb;
 539
 540                 rcap = malloc(sizeof(*rcap), M_TEMP, M_INTWAIT | M_ZERO);
 541
 542                 ccb = cam_periph_getccb(periph, /*priority*/1);
 543                 scsi_read_capacity(&ccb->csio,
 544                                    /*retries*/1,
 545                                    /*cbfncp*/dadone,
 546                                    MSG_SIMPLE_Q_TAG,
 547                                    rcap,
 548                                    SSD_FULL_SIZE,
 549                                    /*timeout*/60000);
 550                 ccb->ccb_h.ccb_bp = NULL;
 551
 552                 error = cam_periph_runccb(ccb, daerror, /*cam_flags*/0,
 553                                           /*sense_flags*/SF_RETRY_UA |
 554                                                          SF_RETRY_SELTO,
 555                                           &softc->device_stats);
 556
 557                 xpt_release_ccb(ccb);
 558
 559                 if (error == 0) {
 560                         dasetgeom(periph, rcap);
 561                 }
 562
 563                 free(rcap, M_TEMP);
 564         }
 565
 566         if (error == 0) {
 567                 struct ccb_getdev cgd;
 568
 569                 /* Build label for whole disk. */
 570                 label = &softc->disk.d_label;
 571                 bzero(label, sizeof(*label));
 572                 label->d_type = DTYPE_SCSI;
 573
 574                 /*
 575                  * Grab the inquiry data to get the vendor and product names.
 576                  * Put them in the typename and packname for the label.
 577                  */
 578                 xpt_setup_ccb(&cgd.ccb_h, periph->path, /*priority*/ 1);
 579                 cgd.ccb_h.func_code = XPT_GDEV_TYPE;
 580                 xpt_action((union ccb *)&cgd);
 581
 582                 strncpy(label->d_typename, cgd.inq_data.vendor,
 583                         min(SID_VENDOR_SIZE, sizeof(label->d_typename)));
 584                 strncpy(label->d_packname, cgd.inq_data.product,
 585                         min(SID_PRODUCT_SIZE, sizeof(label->d_packname)));
 586
 587                 label->d_secsize = softc->params.secsize;
 588                 label->d_nsectors = softc->params.secs_per_track;
 589                 label->d_ntracks = softc->params.heads;
 590                 label->d_ncylinders = softc->params.cylinders;
 591                 label->d_secpercyl = softc->params.heads
 592                                   * softc->params.secs_per_track;
 593                 label->d_secperunit = softc->params.sectors;
 594
 595                 if ((softc->flags & DA_FLAG_PACK_REMOVABLE) != 0 &&
 596                     (softc->quirks & DA_Q_NO_PREVENT) == 0)
 597                         daprevent(periph, PR_PREVENT);
 598
 599                 /*
 600                  * Check to see whether or not the blocksize is set yet.
 601                  * If it isn't, set it and then clear the blocksize
 602                  * unavailable flag for the device statistics.
 603                  */
 604                 if ((softc->device_stats.flags & DEVSTAT_BS_UNAVAILABLE) != 0){
 605                         softc->device_stats.block_size = softc->params.secsize;
 606                         softc->device_stats.flags &= ~DEVSTAT_BS_UNAVAILABLE;
 607                 }
 608         }
 609
 610         if (error != 0) {
 611                 if ((softc->flags & DA_FLAG_PACK_REMOVABLE) != 0 &&
 612                     (softc->quirks & DA_Q_NO_PREVENT) == 0)
 613                         daprevent(periph, PR_ALLOW);
 614                 softc->flags &= ~DA_FLAG_OPEN;
 615                 cam_periph_release(periph);
 616         }
 617         cam_periph_unlock(periph);
 618         return (error);
 619 }
 620
 621 static int
 622 daclose(dev_t dev, int flag, int fmt, struct thread *td)
 623 {
 624         struct  cam_periph *periph;
 625         struct  da_softc *softc;
 626         int     unit;
 627         int     error;
 628
 629         unit = dkunit(dev);
 630         periph = cam_extend_get(daperiphs, unit);
 631         if (periph == NULL)
 632                 return (ENXIO);
 633
 634         softc = (struct da_softc *)periph->softc;
 635
 636         if ((error = cam_periph_lock(periph, 0)) != 0) {
 637                 return (error); /* error code from tsleep */
 638         }
 639
 640         if ((softc->quirks & DA_Q_NO_SYNC_CACHE) == 0) {
 641                 union   ccb *ccb;
 642
 643                 ccb = cam_periph_getccb(periph, /*priority*/1);
 644
 645                 scsi_synchronize_cache(&ccb->csio,
 646                                        /*retries*/1,
 647                                        /*cbfcnp*/dadone,
 648                                        MSG_SIMPLE_Q_TAG,
 649                                        /*begin_lba*/0,/* Cover the whole disk */
 650                                        /*lb_count*/0,
 651                                        SSD_FULL_SIZE,
 652                                        5 * 60 * 1000);
 653
 654                 cam_periph_runccb(ccb, /*error_routine*/NULL, /*cam_flags*/0,
 655                                   /*sense_flags*/SF_RETRY_UA,
 656                                   &softc->device_stats);
 657
 658                 if ((ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
 659                         if ((ccb->ccb_h.status & CAM_STATUS_MASK) ==
 660                              CAM_SCSI_STATUS_ERROR) {
 661                                 int asc, ascq;
 662                                 int sense_key, error_code;
 663
 664                                 scsi_extract_sense(&ccb->csio.sense_data,
 665                                                    &error_code,
 666                                                    &sense_key,
 667                                                    &asc, &ascq);
 668                                 if (sense_key != SSD_KEY_ILLEGAL_REQUEST)
 669                                         scsi_sense_print(&ccb->csio);
 670                         } else {
 671                                 xpt_print_path(periph->path);
 672                                 printf("Synchronize cache failed, status "
 673                                        "== 0x%x, scsi status == 0x%x\n",
 674                                        ccb->csio.ccb_h.status,
 675                                        ccb->csio.scsi_status);
 676                         }
 677                 }
 678
 679                 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
 680                         cam_release_devq(ccb->ccb_h.path,
 681                                          /*relsim_flags*/0,
 682                                          /*reduction*/0,
 683                                          /*timeout*/0,
 684                                          /*getcount_only*/0);
 685
 686                 xpt_release_ccb(ccb);
 687
 688         }
 689
 690         if ((softc->flags & DA_FLAG_PACK_REMOVABLE) != 0) {
 691                 if ((softc->quirks & DA_Q_NO_PREVENT) == 0)
 692                         daprevent(periph, PR_ALLOW);
 693                 /*
 694                  * If we've got removeable media, mark the blocksize as
 695                  * unavailable, since it could change when new media is
 696                  * inserted.
 697                  */
 698                 softc->device_stats.flags |= DEVSTAT_BS_UNAVAILABLE;
 699         }
 700
 701         softc->flags &= ~DA_FLAG_OPEN;
 702         cam_periph_unlock(periph);
 703         cam_periph_release(periph);
 704         return (0);
 705 }
 706
 707 /*
 708  * Actually translate the requested transfer into one the physical driver
 709  * can understand.  The transfer is described by a buf and will include
 710  * only one physical transfer.
 711  */
 712 static void
 713 dastrategy(struct buf *bp)
 714 {
 715         struct cam_periph *periph;
 716         struct da_softc *softc;
 717         u_int  unit;
 718         u_int  part;
 719         int    s;
 720
 721         unit = dkunit(bp->b_dev);
 722         part = dkpart(bp->b_dev);
 723         periph = cam_extend_get(daperiphs, unit);
 724         if (periph == NULL) {
 725                 bp->b_error = ENXIO;
 726                 goto bad;
 727         }
 728         softc = (struct da_softc *)periph->softc;
 729 #if 0
 730         /*
 731          * check it's not too big a transfer for our adapter
 732          */
 733         scsi_minphys(bp,&sd_switch);
 734 #endif
 735
 736         /*
 737          * Mask interrupts so that the pack cannot be invalidated until
 738          * after we are in the queue.  Otherwise, we might not properly
 739          * clean up one of the buffers.
 740          */
 741         s = splbio();
 742
 743         /*
 744          * If the device has been made invalid, error out
 745          */
 746         if ((softc->flags & DA_FLAG_PACK_INVALID)) {
 747                 splx(s);
 748                 bp->b_error = ENXIO;
 749                 goto bad;
 750         }
 751
 752         /*
 753          * Place it in the queue of disk activities for this disk
 754          */
 755         bufqdisksort(&softc->buf_queue, bp);
 756
 757         splx(s);
 758
 759         /*
 760          * Schedule ourselves for performing the work.
 761          */
 762         xpt_schedule(periph, /* XXX priority */1);
 763
 764         return;
 765 bad:
 766         bp->b_flags |= B_ERROR;
 767
 768         /*
 769          * Correctly set the buf to indicate a completed xfer
 770          */
 771         bp->b_resid = bp->b_bcount;
 772         biodone(bp);
 773         return;
 774 }
 775
 776 /* For 2.2-stable support */
 777 #ifndef ENOIOCTL
 778 #define ENOIOCTL -1
 779 #endif
 780
 781 static int
 782 daioctl(dev_t dev, u_long cmd, caddr_t addr, int flag, struct thread *td)
 783 {
 784         struct cam_periph *periph;
 785         struct da_softc *softc;
 786         int unit;
 787         int error;
 788
 789         unit = dkunit(dev);
 790         periph = cam_extend_get(daperiphs, unit);
 791         if (periph == NULL)
 792                 return (ENXIO);
 793
 794         softc = (struct da_softc *)periph->softc;
 795
 796         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("daioctl\n"));
 797
 798         if ((error = cam_periph_lock(periph, PCATCH)) != 0) {
 799                 return (error); /* error code from tsleep */
 800         }
 801
 802         error = cam_periph_ioctl(periph, cmd, addr, daerror);
 803
 804         cam_periph_unlock(periph);
 805
 806         return (error);
 807 }
 808
 809 static int
 810 dadump(dev_t dev)
 811 {
 812         struct      cam_periph *periph;
 813         struct      da_softc *softc;
 814         u_int       unit;
 815         u_int       part;
 816         u_int       secsize;
 817         u_int       num;        /* number of sectors to write */
 818         u_int       blknum;
 819         long        blkcnt;
 820         vm_paddr_t  addr;
 821         struct      ccb_scsiio csio;
 822         int         dumppages = MAXDUMPPGS;
 823         int         error;
 824         int         i;
 825
 826         /* toss any characters present prior to dump */
 827         while (cncheckc() != -1)
 828                 ;
 829
 830         unit = dkunit(dev);
 831         part = dkpart(dev);
 832         periph = cam_extend_get(daperiphs, unit);
 833         if (periph == NULL) {
 834                 return (ENXIO);
 835         }
 836         softc = (struct da_softc *)periph->softc;
 837
 838         if ((softc->flags & DA_FLAG_PACK_INVALID) != 0)
 839                 return (ENXIO);
 840
 841         error = disk_dumpcheck(dev, &num, &blknum, &secsize);
 842         if (error)
 843                 return (error);
 844
 845         addr = 0;       /* starting address */
 846         blkcnt = howmany(PAGE_SIZE, secsize);
 847
 848         while (num > 0) {
 849                 caddr_t va = NULL;
 850
 851                 if ((num / blkcnt) < dumppages)
 852                         dumppages = num / blkcnt;
 853
 854                 for (i = 0; i < dumppages; ++i) {
 855                         vm_paddr_t a = addr + (i * PAGE_SIZE);
 856                         if (is_physical_memory(a))
 857                                 va = pmap_kenter_temporary(trunc_page(a), i);
 858                         else
 859                                 va = pmap_kenter_temporary(trunc_page(0), i);
 860                 }
 861
 862                 xpt_setup_ccb(&csio.ccb_h, periph->path, /*priority*/1);
 863                 csio.ccb_h.ccb_state = DA_CCB_DUMP;
 864                 scsi_read_write(&csio,
 865                                 /*retries*/1,
 866                                 dadone,
 867                                 MSG_ORDERED_Q_TAG,
 868                                 /*read*/FALSE,
 869                                 /*byte2*/0,
 870                                 /*minimum_cmd_size*/ softc->minimum_cmd_size,
 871                                 blknum,
 872                                 blkcnt * dumppages,
 873                                 /*data_ptr*/(u_int8_t *) va,
 874                                 /*dxfer_len*/blkcnt * secsize * dumppages,
 875                                 /*sense_len*/SSD_FULL_SIZE,
 876                                 DA_DEFAULT_TIMEOUT * 1000);
 877                 xpt_polled_action((union ccb *)&csio);
 878
 879                 if ((csio.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
 880                         printf("Aborting dump due to I/O error.\n");
 881                         if ((csio.ccb_h.status & CAM_STATUS_MASK) ==
 882                              CAM_SCSI_STATUS_ERROR)
 883                                 scsi_sense_print(&csio);
 884                         else
 885                                 printf("status == 0x%x, scsi status == 0x%x\n",
 886                                        csio.ccb_h.status, csio.scsi_status);
 887                         return(EIO);
 888                 }
 889
 890                 if (dumpstatus(addr, (off_t)num * softc->params.secsize) < 0)
 891                         return (EINTR);
 892
 893                 /* update block count */
 894                 num -= blkcnt * dumppages;
 895                 blknum += blkcnt * dumppages;
 896                 addr += PAGE_SIZE * dumppages;
 897         }
 898
 899         /*
 900          * Sync the disk cache contents to the physical media.
 901          */
 902         if ((softc->quirks & DA_Q_NO_SYNC_CACHE) == 0) {
 903
 904                 xpt_setup_ccb(&csio.ccb_h, periph->path, /*priority*/1);
 905                 csio.ccb_h.ccb_state = DA_CCB_DUMP;
 906                 scsi_synchronize_cache(&csio,
 907                                        /*retries*/1,
 908                                        /*cbfcnp*/dadone,
 909                                        MSG_SIMPLE_Q_TAG,
 910                                        /*begin_lba*/0,/* Cover the whole disk */
 911                                        /*lb_count*/0,
 912                                        SSD_FULL_SIZE,
 913                                        5 * 60 * 1000);
 914                 xpt_polled_action((union ccb *)&csio);
 915
 916                 if ((csio.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
 917                         if ((csio.ccb_h.status & CAM_STATUS_MASK) ==
 918                              CAM_SCSI_STATUS_ERROR) {
 919                                 int asc, ascq;
 920                                 int sense_key, error_code;
 921
 922                                 scsi_extract_sense(&csio.sense_data,
 923                                                    &error_code,
 924                                                    &sense_key,
 925                                                    &asc, &ascq);
 926                                 if (sense_key != SSD_KEY_ILLEGAL_REQUEST)
 927                                         scsi_sense_print(&csio);
 928                         } else {
 929                                 xpt_print_path(periph->path);
 930                                 printf("Synchronize cache failed, status "
 931                                        "== 0x%x, scsi status == 0x%x\n",
 932                                        csio.ccb_h.status, csio.scsi_status);
 933                         }
 934                 }
 935         }
 936         return (0);
 937 }
 938
 939 static void
 940 dainit(void)
 941 {
 942         cam_status status;
 943         struct cam_path *path;
 944
 945         /*
 946          * Create our extend array for storing the devices we attach to.
 947          */
 948         daperiphs = cam_extend_new();
 949         SLIST_INIT(&softc_list);
 950         if (daperiphs == NULL) {
 951                 printf("da: Failed to alloc extend array!\n");
 952                 return;
 953         }
 954
 955         /*
 956          * Install a global async callback.  This callback will
 957          * receive async callbacks like "new device found".
 958          */
 959         status = xpt_create_path(&path, /*periph*/NULL, CAM_XPT_PATH_ID,
 960                                  CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD);
 961
 962         if (status == CAM_REQ_CMP) {
 963                 struct ccb_setasync csa;
 964
 965                 xpt_setup_ccb(&csa.ccb_h, path, /*priority*/5);
 966                 csa.ccb_h.func_code = XPT_SASYNC_CB;
 967                 csa.event_enable = AC_FOUND_DEVICE;
 968                 csa.callback = daasync;
 969                 csa.callback_arg = NULL;
 970                 xpt_action((union ccb *)&csa);
 971                 status = csa.ccb_h.status;
 972                 xpt_free_path(path);
 973         }
 974
 975         if (status != CAM_REQ_CMP) {
 976                 printf("da: Failed to attach master async callback "
 977                        "due to status 0x%x!\n", status);
 978         } else {
 979
 980                 /*
 981                  * Schedule a periodic event to occasionally send an
 982                  * ordered tag to a device.
 983                  */
 984                 timeout(dasendorderedtag, NULL,
 985                         (DA_DEFAULT_TIMEOUT * hz) / DA_ORDEREDTAG_INTERVAL);
 986
 987                 /* Register our shutdown event handler */
 988                 if ((EVENTHANDLER_REGISTER(shutdown_post_sync, dashutdown,
 989                                            NULL, SHUTDOWN_PRI_DEFAULT)) == NULL)
 990                     printf("dainit: shutdown event registration failed!\n");
 991         }
 992 }
 993
 994 static void
 995 daoninvalidate(struct cam_periph *periph)
 996 {
 997         int s;
 998         struct da_softc *softc;
 999         struct buf *q_bp;
1000         struct ccb_setasync csa;
1001
1002         softc = (struct da_softc *)periph->softc;
1003
1004         /*
1005          * De-register any async callbacks.
1006          */
1007         xpt_setup_ccb(&csa.ccb_h, periph->path,
1008                       /* priority */ 5);
1009         csa.ccb_h.func_code = XPT_SASYNC_CB;
1010         csa.event_enable = 0;
1011         csa.callback = daasync;
1012         csa.callback_arg = periph;
1013         xpt_action((union ccb *)&csa);
1014
1015         softc->flags |= DA_FLAG_PACK_INVALID;
1016
1017         /*
1018          * Although the oninvalidate() routines are always called at
1019          * splsoftcam, we need to be at splbio() here to keep the buffer
1020          * queue from being modified while we traverse it.
1021          */
1022         s = splbio();
1023
1024         /*
1025          * Return all queued I/O with ENXIO.
1026          * XXX Handle any transactions queued to the card
1027          *     with XPT_ABORT_CCB.
1028          */
1029         while ((q_bp = bufq_first(&softc->buf_queue)) != NULL){
1030                 bufq_remove(&softc->buf_queue, q_bp);
1031                 q_bp->b_resid = q_bp->b_bcount;
1032                 q_bp->b_error = ENXIO;
1033                 q_bp->b_flags |= B_ERROR;
1034                 biodone(q_bp);
1035         }
1036         splx(s);
1037
1038         SLIST_REMOVE(&softc_list, softc, da_softc, links);
1039
1040         xpt_print_path(periph->path);
1041         printf("lost device\n");
1042 }
1043
1044 static void
1045 dacleanup(struct cam_periph *periph)
1046 {
1047         struct da_softc *softc;
1048
1049         softc = (struct da_softc *)periph->softc;
1050
1051         devstat_remove_entry(&softc->device_stats);
1052         cam_extend_release(daperiphs, periph->unit_number);
1053         xpt_print_path(periph->path);
1054         printf("removing device entry\n");
1055         /*
1056          * If we can't free the sysctl tree, oh well...
1057          */
1058         if ((softc->flags & DA_FLAG_SCTX_INIT) != 0
1059             && sysctl_ctx_free(&softc->sysctl_ctx) != 0) {
1060                 xpt_print_path(periph->path);
1061                 printf("can't remove sysctl context\n");
1062         }
1063         if (softc->disk.d_dev) {
1064                 disk_destroy(&softc->disk);
1065         }
1066         free(softc, M_DEVBUF);
1067 }
1068
1069 static void
1070 daasync(void *callback_arg, u_int32_t code,
1071         struct cam_path *path, void *arg)
1072 {
1073         struct cam_periph *periph;
1074
1075         periph = (struct cam_periph *)callback_arg;
1076         switch (code) {
1077         case AC_FOUND_DEVICE:
1078         {
1079                 struct ccb_getdev *cgd;
1080                 cam_status status;
1081
1082                 cgd = (struct ccb_getdev *)arg;
1083
1084                 if (SID_TYPE(&cgd->inq_data) != T_DIRECT
1085                     && SID_TYPE(&cgd->inq_data) != T_RBC
1086                     && SID_TYPE(&cgd->inq_data) != T_OPTICAL)
1087                         break;
1088
1089                 /*
1090                  * Allocate a peripheral instance for
1091                  * this device and start the probe
1092                  * process.
1093                  */
1094                 status = cam_periph_alloc(daregister, daoninvalidate,
1095                                           dacleanup, dastart,
1096                                           "da", CAM_PERIPH_BIO,
1097                                           cgd->ccb_h.path, daasync,
1098                                           AC_FOUND_DEVICE, cgd);
1099
1100                 if (status != CAM_REQ_CMP
1101                  && status != CAM_REQ_INPROG)
1102                         printf("daasync: Unable to attach to new device "
1103                                 "due to status 0x%x\n", status);
1104                 break;
1105         }
1106         case AC_SENT_BDR:
1107         case AC_BUS_RESET:
1108         {
1109                 struct da_softc *softc;
1110                 struct ccb_hdr *ccbh;
1111                 int s;
1112
1113                 softc = (struct da_softc *)periph->softc;
1114                 s = splsoftcam();
1115                 /*
1116                  * Don't fail on the expected unit attention
1117                  * that will occur.
1118                  */
1119                 softc->flags |= DA_FLAG_RETRY_UA;
1120                 for (ccbh = LIST_FIRST(&softc->pending_ccbs);
1121                      ccbh != NULL; ccbh = LIST_NEXT(ccbh, periph_links.le))
1122                         ccbh->ccb_state |= DA_CCB_RETRY_UA;
1123                 splx(s);
1124                 /* FALLTHROUGH*/
1125         }
1126         default:
1127                 cam_periph_async(periph, code, path, arg);
1128                 break;
1129         }
1130 }
1131
1132 static void
1133 dasysctlinit(void *context, int pending)
1134 {
1135         struct cam_periph *periph;
1136         struct da_softc *softc;
1137         char tmpstr[80], tmpstr2[80];
1138
1139         periph = (struct cam_periph *)context;
1140         softc = (struct da_softc *)periph->softc;
1141
1142         snprintf(tmpstr, sizeof(tmpstr), "CAM DA unit %d", periph->unit_number);
1143         snprintf(tmpstr2, sizeof(tmpstr2), "%d", periph->unit_number);
1144
1145         sysctl_ctx_init(&softc->sysctl_ctx);
1146         softc->flags |= DA_FLAG_SCTX_INIT;
1147         softc->sysctl_tree = SYSCTL_ADD_NODE(&softc->sysctl_ctx,
1148                 SYSCTL_STATIC_CHILDREN(_kern_cam_da), OID_AUTO, tmpstr2,
1149                 CTLFLAG_RD, 0, tmpstr);
1150         if (softc->sysctl_tree == NULL) {
1151                 printf("dasysctlinit: unable to allocate sysctl tree\n");
1152                 return;
1153         }
1154
1155         /*
1156          * Now register the sysctl handler, so the user can the value on
1157          * the fly.
1158          */
1159         SYSCTL_ADD_PROC(&softc->sysctl_ctx,SYSCTL_CHILDREN(softc->sysctl_tree),
1160                 OID_AUTO, "minimum_cmd_size", CTLTYPE_INT | CTLFLAG_RW,
1161                 &softc->minimum_cmd_size, 0, dacmdsizesysctl, "I",
1162                 "Minimum CDB size");
1163 }
1164
1165 static int
1166 dacmdsizesysctl(SYSCTL_HANDLER_ARGS)
1167 {
1168         int error, value;
1169
1170         value = *(int *)arg1;
1171
1172         error = sysctl_handle_int(oidp, &value, 0, req);
1173
1174         if ((error != 0)
1175          || (req->newptr == NULL))
1176                 return (error);
1177
1178         /*
1179          * Acceptable values here are 6, 10 or 12.  It's possible we may
1180          * support a 16 byte minimum command size in the future, since
1181          * there are now READ(16) and WRITE(16) commands defined in the
1182          * SBC-2 spec.
1183          */
1184         if (value < 6)
1185                 value = 6;
1186         else if ((value > 6)
1187               && (value <= 10))
1188                 value = 10;
1189         else if (value > 10)
1190                 value = 12;
1191
1192         *(int *)arg1 = value;
1193
1194         return (0);
1195 }
1196
1197 static cam_status
1198 daregister(struct cam_periph *periph, void *arg)
1199 {
1200         int s;
1201         struct da_softc *softc;
1202         struct ccb_setasync csa;
1203         struct ccb_pathinq cpi;
1204         struct ccb_getdev *cgd;
1205         char tmpstr[80];
1206         caddr_t match;
1207
1208         cgd = (struct ccb_getdev *)arg;
1209         if (periph == NULL) {
1210                 printf("daregister: periph was NULL!!\n");
1211                 return(CAM_REQ_CMP_ERR);
1212         }
1213
1214         if (cgd == NULL) {
1215                 printf("daregister: no getdev CCB, can't register device\n");
1216                 return(CAM_REQ_CMP_ERR);
1217         }
1218
1219         softc = malloc(sizeof(*softc), M_DEVBUF, M_INTWAIT | M_ZERO);
1220         LIST_INIT(&softc->pending_ccbs);
1221         softc->state = DA_STATE_PROBE;
1222         bufq_init(&softc->buf_queue);
1223         if (SID_IS_REMOVABLE(&cgd->inq_data))
1224                 softc->flags |= DA_FLAG_PACK_REMOVABLE;
1225         if ((cgd->inq_data.flags & SID_CmdQue) != 0)
1226                 softc->flags |= DA_FLAG_TAGGED_QUEUING;
1227
1228         periph->softc = softc;
1229
1230         cam_extend_set(daperiphs, periph->unit_number, periph);
1231
1232         /*
1233          * See if this device has any quirks.
1234          */
1235         match = cam_quirkmatch((caddr_t)&cgd->inq_data,
1236                                (caddr_t)da_quirk_table,
1237                                sizeof(da_quirk_table)/sizeof(*da_quirk_table),
1238                                sizeof(*da_quirk_table), scsi_inquiry_match);
1239
1240         if (match != NULL)
1241                 softc->quirks = ((struct da_quirk_entry *)match)->quirks;
1242         else
1243                 softc->quirks = DA_Q_NONE;
1244
1245         TASK_INIT(&softc->sysctl_task, 0, dasysctlinit, periph);
1246
1247         /* Check if the SIM does not want 6 byte commands */
1248         xpt_setup_ccb(&cpi.ccb_h, periph->path, /*priority*/1);
1249         cpi.ccb_h.func_code = XPT_PATH_INQ;
1250         xpt_action((union ccb *)&cpi);
1251         if (cpi.ccb_h.status == CAM_REQ_CMP && (cpi.hba_misc & PIM_NO_6_BYTE))
1252                 softc->quirks |= DA_Q_NO_6_BYTE;
1253
1254         /*
1255          * RBC devices don't have to support READ(6), only READ(10).
1256          */
1257         if (softc->quirks & DA_Q_NO_6_BYTE || SID_TYPE(&cgd->inq_data) == T_RBC)
1258                 softc->minimum_cmd_size = 10;
1259         else
1260                 softc->minimum_cmd_size = 6;
1261
1262         /*
1263          * Load the user's default, if any.
1264          */
1265         snprintf(tmpstr, sizeof(tmpstr), "kern.cam.da.%d.minimum_cmd_size",
1266                  periph->unit_number);
1267         TUNABLE_INT_FETCH(tmpstr, &softc->minimum_cmd_size);
1268
1269         /*
1270          * 6, 10 and 12 are the currently permissible values.
1271          */
1272         if (softc->minimum_cmd_size < 6)
1273                 softc->minimum_cmd_size = 6;
1274         else if ((softc->minimum_cmd_size > 6)
1275               && (softc->minimum_cmd_size <= 10))
1276                 softc->minimum_cmd_size = 10;
1277         else if (softc->minimum_cmd_size > 12)
1278                 softc->minimum_cmd_size = 12;
1279
1280         /*
1281          * Block our timeout handler while we
1282          * add this softc to the dev list.
1283          */
1284         s = splsoftclock();
1285         SLIST_INSERT_HEAD(&softc_list, softc, links);
1286         splx(s);
1287
1288         /*
1289          * The DA driver supports a blocksize, but
1290          * we don't know the blocksize until we do
1291          * a read capacity.  So, set a flag to
1292          * indicate that the blocksize is
1293          * unavailable right now.  We'll clear the
1294          * flag as soon as we've done a read capacity.
1295          */
1296         devstat_add_entry(&softc->device_stats, "da",
1297                           periph->unit_number, 0,
1298                           DEVSTAT_BS_UNAVAILABLE,
1299                           SID_TYPE(&cgd->inq_data) | DEVSTAT_TYPE_IF_SCSI,
1300                           DEVSTAT_PRIORITY_DISK);
1301
1302         /*
1303          * Register this media as a disk
1304          */
1305         disk_create(periph->unit_number, &softc->disk, 0, &da_cdevsw);
1306
1307         /*
1308          * Add async callbacks for bus reset and
1309          * bus device reset calls.  I don't bother
1310          * checking if this fails as, in most cases,
1311          * the system will function just fine without
1312          * them and the only alternative would be to
1313          * not attach the device on failure.
1314          */
1315         xpt_setup_ccb(&csa.ccb_h, periph->path, /*priority*/5);
1316         csa.ccb_h.func_code = XPT_SASYNC_CB;
1317         csa.event_enable = AC_SENT_BDR | AC_BUS_RESET | AC_LOST_DEVICE;
1318         csa.callback = daasync;
1319         csa.callback_arg = periph;
1320         xpt_action((union ccb *)&csa);
1321         /*
1322          * Lock this peripheral until we are setup.
1323          * This first call can't block
1324          */
1325         (void)cam_periph_lock(periph, 0);
1326         xpt_schedule(periph, /*priority*/5);
1327
1328         return(CAM_REQ_CMP);
1329 }
1330
1331 static void
1332 dastart(struct cam_periph *periph, union ccb *start_ccb)
1333 {
1334         struct da_softc *softc;
1335
1336         softc = (struct da_softc *)periph->softc;
1337
1338
1339         switch (softc->state) {
1340         case DA_STATE_NORMAL:
1341         {
1342                 /* Pull a buffer from the queue and get going on it */
1343                 struct buf *bp;
1344                 int s;
1345
1346                 /*
1347                  * See if there is a buf with work for us to do..
1348                  */
1349                 s = splbio();
1350                 bp = bufq_first(&softc->buf_queue);
1351                 if (periph->immediate_priority <= periph->pinfo.priority) {
1352                         CAM_DEBUG_PRINT(CAM_DEBUG_SUBTRACE,
1353                                         ("queuing for immediate ccb\n"));
1354                         start_ccb->ccb_h.ccb_state = DA_CCB_WAITING;
1355                         SLIST_INSERT_HEAD(&periph->ccb_list, &start_ccb->ccb_h,
1356                                           periph_links.sle);
1357                         periph->immediate_priority = CAM_PRIORITY_NONE;
1358                         splx(s);
1359                         wakeup(&periph->ccb_list);
1360                 } else if (bp == NULL) {
1361                         splx(s);
1362                         xpt_release_ccb(start_ccb);
1363                 } else {
1364                         int oldspl;
1365                         u_int8_t tag_code;
1366
1367                         bufq_remove(&softc->buf_queue, bp);
1368
1369                         devstat_start_transaction(&softc->device_stats);
1370
1371                         if ((bp->b_flags & B_ORDERED) != 0
1372                          || (softc->flags & DA_FLAG_NEED_OTAG) != 0) {
1373                                 softc->flags &= ~DA_FLAG_NEED_OTAG;
1374                                 softc->ordered_tag_count++;
1375                                 tag_code = MSG_ORDERED_Q_TAG;
1376                         } else {
1377                                 tag_code = MSG_SIMPLE_Q_TAG;
1378                         }
1379                         scsi_read_write(&start_ccb->csio,
1380                                         /*retries*/da_retry_count,
1381                                         dadone,
1382                                         tag_code,
1383                                         bp->b_flags & B_READ,
1384                                         /*byte2*/0,
1385                                         softc->minimum_cmd_size,
1386                                         bp->b_pblkno,
1387                                         bp->b_bcount / softc->params.secsize,
1388                                         bp->b_data,
1389                                         bp->b_bcount,
1390                                         /*sense_len*/SSD_FULL_SIZE,
1391                                         da_default_timeout * 1000);
1392                         start_ccb->ccb_h.ccb_state = DA_CCB_BUFFER_IO;
1393
1394                         /*
1395                          * Block out any asyncronous callbacks
1396                          * while we touch the pending ccb list.
1397                          */
1398                         oldspl = splcam();
1399                         LIST_INSERT_HEAD(&softc->pending_ccbs,
1400                                          &start_ccb->ccb_h, periph_links.le);
1401                         splx(oldspl);
1402
1403                         /* We expect a unit attention from this device */
1404                         if ((softc->flags & DA_FLAG_RETRY_UA) != 0) {
1405                                 start_ccb->ccb_h.ccb_state |= DA_CCB_RETRY_UA;
1406                                 softc->flags &= ~DA_FLAG_RETRY_UA;
1407                         }
1408
1409                         start_ccb->ccb_h.ccb_bp = bp;
1410                         bp = bufq_first(&softc->buf_queue);
1411                         splx(s);
1412
1413                         xpt_action(start_ccb);
1414                 }
1415
1416                 if (bp != NULL) {
1417                         /* Have more work to do, so ensure we stay scheduled */
1418                         xpt_schedule(periph, /* XXX priority */1);
1419                 }
1420                 break;
1421         }
1422         case DA_STATE_PROBE:
1423         {
1424                 struct ccb_scsiio *csio;
1425                 struct scsi_read_capacity_data *rcap;
1426
1427                 rcap = malloc(sizeof(*rcap), M_TEMP, M_INTWAIT | M_ZERO);
1428                 csio = &start_ccb->csio;
1429                 scsi_read_capacity(csio,
1430                                    /*retries*/4,
1431                                    dadone,
1432                                    MSG_SIMPLE_Q_TAG,
1433                                    rcap,
1434                                    SSD_FULL_SIZE,
1435                                    /*timeout*/5000);
1436                 start_ccb->ccb_h.ccb_bp = NULL;
1437                 start_ccb->ccb_h.ccb_state = DA_CCB_PROBE;
1438                 xpt_action(start_ccb);
1439                 break;
1440         }
1441         }
1442 }
1443
1444 static int
1445 cmd6workaround(union ccb *ccb)
1446 {
1447         struct scsi_rw_6 cmd6;
1448         struct scsi_rw_10 *cmd10;
1449         struct da_softc *softc;
1450         u_int8_t *cdb;
1451         int frozen;
1452
1453         cdb = ccb->csio.cdb_io.cdb_bytes;
1454
1455         /* Translation only possible if CDB is an array and cmd is R/W6 */
1456         if ((ccb->ccb_h.flags & CAM_CDB_POINTER) != 0 ||
1457             (*cdb != READ_6 && *cdb != WRITE_6))
1458                 return 0;
1459
1460         xpt_print_path(ccb->ccb_h.path);
1461         printf("READ(6)/WRITE(6) not supported, "
1462                "increasing minimum_cmd_size to 10.\n");
1463         softc = (struct da_softc *)xpt_path_periph(ccb->ccb_h.path)->softc;
1464         softc->minimum_cmd_size = 10;
1465
1466         bcopy(cdb, &cmd6, sizeof(struct scsi_rw_6));
1467         cmd10 = (struct scsi_rw_10 *)cdb;
1468         cmd10->opcode = (cmd6.opcode == READ_6) ? READ_10 : WRITE_10;
1469         cmd10->byte2 = 0;
1470         scsi_ulto4b(scsi_3btoul(cmd6.addr), cmd10->addr);
1471         cmd10->reserved = 0;
1472         scsi_ulto2b(cmd6.length, cmd10->length);
1473         cmd10->control = cmd6.control;
1474         ccb->csio.cdb_len = sizeof(*cmd10);
1475
1476         /* Requeue request, unfreezing queue if necessary */
1477         frozen = (ccb->ccb_h.status & CAM_DEV_QFRZN) != 0;
1478         ccb->ccb_h.status = CAM_REQUEUE_REQ;
1479         xpt_action(ccb);
1480         if (frozen) {
1481                 cam_release_devq(ccb->ccb_h.path,
1482                                  /*relsim_flags*/0,
1483                                  /*reduction*/0,
1484                                  /*timeout*/0,
1485                                  /*getcount_only*/0);
1486         }
1487         return (ERESTART);
1488 }
1489
1490 static void
1491 dadone(struct cam_periph *periph, union ccb *done_ccb)
1492 {
1493         struct da_softc *softc;
1494         struct ccb_scsiio *csio;
1495
1496         softc = (struct da_softc *)periph->softc;
1497         csio = &done_ccb->csio;
1498         switch (csio->ccb_h.ccb_state & DA_CCB_TYPE_MASK) {
1499         case DA_CCB_BUFFER_IO:
1500         {
1501                 struct buf *bp;
1502                 int    oldspl;
1503
1504                 bp = (struct buf *)done_ccb->ccb_h.ccb_bp;
1505                 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1506                         int error;
1507                         int s;
1508                         int sf;
1509
1510                         if ((csio->ccb_h.ccb_state & DA_CCB_RETRY_UA) != 0)
1511                                 sf = SF_RETRY_UA;
1512                         else
1513                                 sf = 0;
1514
1515                         /* Retry selection timeouts */
1516                         sf |= SF_RETRY_SELTO;
1517
1518                         if ((error = daerror(done_ccb, 0, sf)) == ERESTART) {
1519                                 /*
1520                                  * A retry was scheuled, so
1521                                  * just return.
1522                                  */
1523                                 return;
1524                         }
1525                         if (error != 0) {
1526                                 struct buf *q_bp;
1527
1528                                 s = splbio();
1529
1530                                 if (error == ENXIO) {
1531                                         /*
1532                                          * Catastrophic error.  Mark our pack as
1533                                          * invalid.
1534                                          */
1535                                         /* XXX See if this is really a media
1536                                          *     change first.
1537                                          */
1538                                         xpt_print_path(periph->path);
1539                                         printf("Invalidating pack\n");
1540                                         softc->flags |= DA_FLAG_PACK_INVALID;
1541                                 }
1542
1543                                 /*
1544                                  * return all queued I/O with EIO, so that
1545                                  * the client can retry these I/Os in the
1546                                  * proper order should it attempt to recover.
1547                                  */
1548                                 while ((q_bp = bufq_first(&softc->buf_queue))
1549                                         != NULL) {
1550                                         bufq_remove(&softc->buf_queue, q_bp);
1551                                         q_bp->b_resid = q_bp->b_bcount;
1552                                         q_bp->b_error = EIO;
1553                                         q_bp->b_flags |= B_ERROR;
1554                                         biodone(q_bp);
1555                                 }
1556                                 splx(s);
1557                                 bp->b_error = error;
1558                                 bp->b_resid = bp->b_bcount;
1559                                 bp->b_flags |= B_ERROR;
1560                         } else {
1561                                 bp->b_resid = csio->resid;
1562                                 bp->b_error = 0;
1563                                 if (bp->b_resid != 0)
1564                                         bp->b_flags |= B_ERROR;
1565                         }
1566                         if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
1567                                 cam_release_devq(done_ccb->ccb_h.path,
1568                                                  /*relsim_flags*/0,
1569                                                  /*reduction*/0,
1570                                                  /*timeout*/0,
1571                                                  /*getcount_only*/0);
1572                 } else {
1573                         bp->b_resid = csio->resid;
1574                         if (csio->resid > 0)
1575                                 bp->b_flags |= B_ERROR;
1576                 }
1577
1578                 /*
1579                  * Block out any asyncronous callbacks
1580                  * while we touch the pending ccb list.
1581                  */
1582                 oldspl = splcam();
1583                 LIST_REMOVE(&done_ccb->ccb_h, periph_links.le);
1584                 splx(oldspl);
1585
1586                 if (softc->device_stats.busy_count == 0)
1587                         softc->flags |= DA_FLAG_WENT_IDLE;
1588
1589                 devstat_end_transaction_buf(&softc->device_stats, bp);
1590                 biodone(bp);
1591                 break;
1592         }
1593         case DA_CCB_PROBE:
1594         {
1595                 struct     scsi_read_capacity_data *rdcap;
1596                 char       announce_buf[80];
1597
1598                 rdcap = (struct scsi_read_capacity_data *)csio->data_ptr;
1599
1600                 if ((csio->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP) {
1601                         struct disk_params *dp;
1602
1603                         dasetgeom(periph, rdcap);
1604                         dp = &softc->params;
1605                         snprintf(announce_buf, sizeof(announce_buf),
1606                                 "%luMB (%u %u byte sectors: %dH %dS/T %dC)",
1607                                 (unsigned long) (((u_int64_t)dp->secsize *
1608                                 dp->sectors) / (1024*1024)), dp->sectors,
1609                                 dp->secsize, dp->heads, dp->secs_per_track,
1610                                 dp->cylinders);
1611                 } else {
1612                         int     error;
1613
1614                         announce_buf[0] = '\0';
1615
1616                         /*
1617                          * Retry any UNIT ATTENTION type errors.  They
1618                          * are expected at boot.
1619                          */
1620                         error = daerror(done_ccb, 0, SF_RETRY_UA |
1621                                         SF_RETRY_SELTO | SF_NO_PRINT);
1622                         if (error == ERESTART) {
1623                                 /*
1624                                  * A retry was scheuled, so
1625                                  * just return.
1626                                  */
1627                                 return;
1628                         } else if (error != 0) {
1629                                 struct scsi_sense_data *sense;
1630                                 int asc, ascq;
1631                                 int sense_key, error_code;
1632                                 int have_sense;
1633                                 cam_status status;
1634                                 struct ccb_getdev cgd;
1635
1636                                 /* Don't wedge this device's queue */
1637                                 cam_release_devq(done_ccb->ccb_h.path,
1638                                                  /*relsim_flags*/0,
1639                                                  /*reduction*/0,
1640                                                  /*timeout*/0,
1641                                                  /*getcount_only*/0);
1642
1643                                 status = done_ccb->ccb_h.status;
1644
1645                                 xpt_setup_ccb(&cgd.ccb_h,
1646                                               done_ccb->ccb_h.path,
1647                                               /* priority */ 1);
1648                                 cgd.ccb_h.func_code = XPT_GDEV_TYPE;
1649                                 xpt_action((union ccb *)&cgd);
1650
1651                                 if (((csio->ccb_h.flags & CAM_SENSE_PHYS) != 0)
1652                                  || ((csio->ccb_h.flags & CAM_SENSE_PTR) != 0)
1653                                  || ((status & CAM_AUTOSNS_VALID) == 0))
1654                                         have_sense = FALSE;
1655                                 else
1656                                         have_sense = TRUE;
1657
1658                                 if (have_sense) {
1659                                         sense = &csio->sense_data;
1660                                         scsi_extract_sense(sense, &error_code,
1661                                                            &sense_key,
1662                                                            &asc, &ascq);
1663                                 }
1664                                 /*
1665                                  * Attach to anything that claims to be a
1666                                  * direct access or optical disk device,
1667                                  * as long as it doesn't return a "Logical
1668                                  * unit not supported" (0x25) error.
1669                                  */
1670                                 if ((have_sense) && (asc != 0x25)
1671                                  && (error_code == SSD_CURRENT_ERROR))
1672                                         snprintf(announce_buf,
1673                                             sizeof(announce_buf),
1674                                                 "Attempt to query device "
1675                                                 "size failed: %s, %s",
1676                                                 scsi_sense_key_text[sense_key],
1677                                                 scsi_sense_desc(asc,ascq,
1678                                                                 &cgd.inq_data));
1679                                 else {
1680                                         if (have_sense)
1681                                                 scsi_sense_print(
1682                                                         &done_ccb->csio);
1683                                         else {
1684                                                 xpt_print_path(periph->path);
1685                                                 printf("got CAM status %#x\n",
1686                                                        done_ccb->ccb_h.status);
1687                                         }
1688
1689                                         xpt_print_path(periph->path);
1690                                         printf("fatal error, failed"
1691                                                " to attach to device\n");
1692
1693                                         /*
1694                                          * Free up resources.
1695                                          */
1696                                         cam_periph_invalidate(periph);
1697                                 }
1698                         }
1699                 }
1700                 free(rdcap, M_TEMP);
1701                 if (announce_buf[0] != '\0') {
1702                         xpt_announce_periph(periph, announce_buf);
1703                         /*
1704                          * Create our sysctl variables, now that we know
1705                          * we have successfully attached.
1706                          */
1707                         taskqueue_enqueue(taskqueue_thread,&softc->sysctl_task);
1708                 }
1709                 softc->state = DA_STATE_NORMAL;
1710                 /*
1711                  * Since our peripheral may be invalidated by an error
1712                  * above or an external event, we must release our CCB
1713                  * before releasing the probe lock on the peripheral.
1714                  * The peripheral will only go away once the last lock
1715                  * is removed, and we need it around for the CCB release
1716                  * operation.
1717                  */
1718                 xpt_release_ccb(done_ccb);
1719                 cam_periph_unlock(periph);
1720                 return;
1721         }
1722         case DA_CCB_WAITING:
1723         {
1724                 /* Caller will release the CCB */
1725                 wakeup(&done_ccb->ccb_h.cbfcnp);
1726                 return;
1727         }
1728         case DA_CCB_DUMP:
1729                 /* No-op.  We're polling */
1730                 return;
1731         default:
1732                 break;
1733         }
1734         xpt_release_ccb(done_ccb);
1735 }
1736
1737 static int
1738 daerror(union ccb *ccb, u_int32_t cam_flags, u_int32_t sense_flags)
1739 {
1740         struct da_softc   *softc;
1741         struct cam_periph *periph;
1742         int error;
1743
1744         periph = xpt_path_periph(ccb->ccb_h.path);
1745         softc = (struct da_softc *)periph->softc;
1746
1747         /*
1748          * Automatically detect devices that do not support
1749          * READ(6)/WRITE(6) and upgrade to using 10 byte cdbs.
1750          */
1751         error = 0;
1752         if ((ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_INVALID) {
1753                 error = cmd6workaround(ccb);
1754         } else if (((ccb->ccb_h.status & CAM_STATUS_MASK) ==
1755                    CAM_SCSI_STATUS_ERROR)
1756          && (ccb->ccb_h.status & CAM_AUTOSNS_VALID)
1757          && (ccb->csio.scsi_status == SCSI_STATUS_CHECK_COND)
1758          && ((ccb->ccb_h.flags & CAM_SENSE_PHYS) == 0)
1759          && ((ccb->ccb_h.flags & CAM_SENSE_PTR) == 0)) {
1760                 int sense_key, error_code, asc, ascq;
1761
1762                 scsi_extract_sense(&ccb->csio.sense_data,
1763                                    &error_code, &sense_key, &asc, &ascq);
1764                 if (sense_key == SSD_KEY_ILLEGAL_REQUEST)
1765                         error = cmd6workaround(ccb);
1766         }
1767         if (error == ERESTART)
1768                 return (ERESTART);
1769
1770         /*
1771          * XXX
1772          * Until we have a better way of doing pack validation,
1773          * don't treat UAs as errors.
1774          */
1775         sense_flags |= SF_RETRY_UA;
1776         return(cam_periph_error(ccb, cam_flags, sense_flags,
1777                                 &softc->saved_ccb));
1778 }
1779
1780 static void
1781 daprevent(struct cam_periph *periph, int action)
1782 {
1783         struct  da_softc *softc;
1784         union   ccb *ccb;
1785         int     error;
1786
1787         softc = (struct da_softc *)periph->softc;
1788
1789         if (((action == PR_ALLOW)
1790           && (softc->flags & DA_FLAG_PACK_LOCKED) == 0)
1791          || ((action == PR_PREVENT)
1792           && (softc->flags & DA_FLAG_PACK_LOCKED) != 0)) {
1793                 return;
1794         }
1795
1796         ccb = cam_periph_getccb(periph, /*priority*/1);
1797
1798         scsi_prevent(&ccb->csio,
1799                      /*retries*/1,
1800                      /*cbcfp*/dadone,
1801                      MSG_SIMPLE_Q_TAG,
1802                      action,
1803                      SSD_FULL_SIZE,
1804                      5000);
1805
1806         error = cam_periph_runccb(ccb, /*error_routine*/NULL, /*cam_flags*/0,
1807                                   /*sense_flags*/0, &softc->device_stats);
1808
1809         if (error == 0) {
1810                 if (action == PR_ALLOW)
1811                         softc->flags &= ~DA_FLAG_PACK_LOCKED;
1812                 else
1813                         softc->flags |= DA_FLAG_PACK_LOCKED;
1814         }
1815
1816         xpt_release_ccb(ccb);
1817 }
1818
1819 static void
1820 dasetgeom(struct cam_periph *periph, struct scsi_read_capacity_data * rdcap)
1821 {
1822         struct ccb_calc_geometry ccg;
1823         struct da_softc *softc;
1824         struct disk_params *dp;
1825
1826         softc = (struct da_softc *)periph->softc;
1827
1828         dp = &softc->params;
1829         dp->secsize = scsi_4btoul(rdcap->length);
1830         dp->sectors = scsi_4btoul(rdcap->addr) + 1;
1831         /*
1832          * Have the controller provide us with a geometry
1833          * for this disk.  The only time the geometry
1834          * matters is when we boot and the controller
1835          * is the only one knowledgeable enough to come
1836          * up with something that will make this a bootable
1837          * device.
1838          */
1839         xpt_setup_ccb(&ccg.ccb_h, periph->path, /*priority*/1);
1840         ccg.ccb_h.func_code = XPT_CALC_GEOMETRY;
1841         ccg.block_size = dp->secsize;
1842         ccg.volume_size = dp->sectors;
1843         ccg.heads = 0;
1844         ccg.secs_per_track = 0;
1845         ccg.cylinders = 0;
1846         xpt_action((union ccb*)&ccg);
1847         dp->heads = ccg.heads;
1848         dp->secs_per_track = ccg.secs_per_track;
1849         dp->cylinders = ccg.cylinders;
1850 }
1851
1852 static void
1853 dasendorderedtag(void *arg)
1854 {
1855         struct da_softc *softc;
1856         int s;
1857
1858         for (softc = SLIST_FIRST(&softc_list);
1859              softc != NULL;
1860              softc = SLIST_NEXT(softc, links)) {
1861                 s = splsoftcam();
1862                 if ((softc->ordered_tag_count == 0)
1863                  && ((softc->flags & DA_FLAG_WENT_IDLE) == 0)) {
1864                         softc->flags |= DA_FLAG_NEED_OTAG;
1865                 }
1866                 if (softc->device_stats.busy_count > 0)
1867                         softc->flags &= ~DA_FLAG_WENT_IDLE;
1868
1869                 softc->ordered_tag_count = 0;
1870                 splx(s);
1871         }
1872         /* Queue us up again */
1873         timeout(dasendorderedtag, NULL,
1874                 (da_default_timeout * hz) / DA_ORDEREDTAG_INTERVAL);
1875 }
1876
1877 /*
1878  * Step through all DA peripheral drivers, and if the device is still open,
1879  * sync the disk cache to physical media.
1880  */
1881 static void
1882 dashutdown(void * arg, int howto)
1883 {
1884         struct cam_periph *periph;
1885         struct da_softc *softc;
1886
1887         for (periph = TAILQ_FIRST(&dadriver.units); periph != NULL;
1888              periph = TAILQ_NEXT(periph, unit_links)) {
1889                 union ccb ccb;
1890                 softc = (struct da_softc *)periph->softc;
1891
1892                 /*
1893                  * We only sync the cache if the drive is still open, and
1894                  * if the drive is capable of it..
1895                  */
1896                 if (((softc->flags & DA_FLAG_OPEN) == 0)
1897                  || (softc->quirks & DA_Q_NO_SYNC_CACHE))
1898                         continue;
1899
1900                 xpt_setup_ccb(&ccb.ccb_h, periph->path, /*priority*/1);
1901
1902                 ccb.ccb_h.ccb_state = DA_CCB_DUMP;
1903                 scsi_synchronize_cache(&ccb.csio,
1904                                        /*retries*/1,
1905                                        /*cbfcnp*/dadone,
1906                                        MSG_SIMPLE_Q_TAG,
1907                                        /*begin_lba*/0, /* whole disk */
1908                                        /*lb_count*/0,
1909                                        SSD_FULL_SIZE,
1910                                        5 * 60 * 1000);
1911
1912                 xpt_polled_action(&ccb);
1913
1914                 if ((ccb.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1915                         if (((ccb.ccb_h.status & CAM_STATUS_MASK) ==
1916                              CAM_SCSI_STATUS_ERROR)
1917                          && (ccb.csio.scsi_status == SCSI_STATUS_CHECK_COND)){
1918                                 int error_code, sense_key, asc, ascq;
1919
1920                                 scsi_extract_sense(&ccb.csio.sense_data,
1921                                                    &error_code, &sense_key,
1922                                                    &asc, &ascq);
1923
1924                                 if (sense_key != SSD_KEY_ILLEGAL_REQUEST)
1925                                         scsi_sense_print(&ccb.csio);
1926                         } else {
1927                                 xpt_print_path(periph->path);
1928                                 printf("Synchronize cache failed, status "
1929                                        "== 0x%x, scsi status == 0x%x\n",
1930                                        ccb.ccb_h.status, ccb.csio.scsi_status);
1931                         }
1932                 }
1933
1934                 if ((ccb.ccb_h.status & CAM_DEV_QFRZN) != 0)
1935                         cam_release_devq(ccb.ccb_h.path,
1936                                          /*relsim_flags*/0,
1937                                          /*reduction*/0,
1938                                          /*timeout*/0,
1939                                          /*getcount_only*/0);
1940
1941         }
1942 }
1943
1944 #else /* !_KERNEL */
1945
1946 /*
1947  * XXX This is only left out of the kernel build to silence warnings.  If,
1948  * for some reason this function is used in the kernel, the ifdefs should
1949  * be moved so it is included both in the kernel and userland.
1950  */
1951 void
1952 scsi_format_unit(struct ccb_scsiio *csio, u_int32_t retries,
1953                  void (*cbfcnp)(struct cam_periph *, union ccb *),
1954                  u_int8_t tag_action, u_int8_t byte2, u_int16_t ileave,
1955                  u_int8_t *data_ptr, u_int32_t dxfer_len, u_int8_t sense_len,
1956                  u_int32_t timeout)
1957 {
1958         struct scsi_format_unit *scsi_cmd;
1959
1960         scsi_cmd = (struct scsi_format_unit *)&csio->cdb_io.cdb_bytes;
1961         scsi_cmd->opcode = FORMAT_UNIT;
1962         scsi_cmd->byte2 = byte2;
1963         scsi_ulto2b(ileave, scsi_cmd->interleave);
1964
1965         cam_fill_csio(csio,
1966                       retries,
1967                       cbfcnp,
1968                       /*flags*/ (dxfer_len > 0) ? CAM_DIR_OUT : CAM_DIR_NONE,
1969                       tag_action,
1970                       data_ptr,
1971                       dxfer_len,
1972                       sense_len,
1973                       sizeof(*scsi_cmd),
1974                       timeout);
1975 }
1976
1977 #endif /* _KERNEL */