sys/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
  29 #include <sys/cdefs.h>
  30 __FBSDID("$FreeBSD$");
  31
  32 #include <sys/param.h>
  33
  34 #ifdef _KERNEL
  35 #include <sys/systm.h>
  36 #include <sys/kernel.h>
  37 #include <sys/bio.h>
  38 #include <sys/sysctl.h>
  39 #include <sys/taskqueue.h>
  40 #include <sys/lock.h>
  41 #include <sys/mutex.h>
  42 #include <sys/conf.h>
  43 #include <sys/devicestat.h>
  44 #include <sys/eventhandler.h>
  45 #include <sys/malloc.h>
  46 #include <sys/cons.h>
  47 #include <geom/geom_disk.h>
  48 #endif /* _KERNEL */
  49
  50 #ifndef _KERNEL
  51 #include <stdio.h>
  52 #include <string.h>
  53 #endif /* _KERNEL */
  54
  55 #include <cam/cam.h>
  56 #include <cam/cam_ccb.h>
  57 #include <cam/cam_periph.h>
  58 #include <cam/cam_xpt_periph.h>
  59 #include <cam/cam_sim.h>
  60
  61 #include <cam/scsi/scsi_message.h>
  62
  63 #ifndef _KERNEL
  64 #include <cam/scsi/scsi_da.h>
  65 #endif /* !_KERNEL */
  66
  67 #ifdef _KERNEL
  68 typedef enum {
  69         DA_STATE_PROBE,
  70         DA_STATE_PROBE2,
  71         DA_STATE_NORMAL
  72 } da_state;
  73
  74 typedef enum {
  75         DA_FLAG_PACK_INVALID    = 0x001,
  76         DA_FLAG_NEW_PACK        = 0x002,
  77         DA_FLAG_PACK_LOCKED     = 0x004,
  78         DA_FLAG_PACK_REMOVABLE  = 0x008,
  79         DA_FLAG_TAGGED_QUEUING  = 0x010,
  80         DA_FLAG_NEED_OTAG       = 0x020,
  81         DA_FLAG_WENT_IDLE       = 0x040,
  82         DA_FLAG_RETRY_UA        = 0x080,
  83         DA_FLAG_OPEN            = 0x100,
  84         DA_FLAG_SCTX_INIT       = 0x200
  85 } da_flags;
  86
  87 typedef enum {
  88         DA_Q_NONE               = 0x00,
  89         DA_Q_NO_SYNC_CACHE      = 0x01,
  90         DA_Q_NO_6_BYTE          = 0x02,
  91         DA_Q_NO_PREVENT         = 0x04
  92 } da_quirks;
  93
  94 typedef enum {
  95         DA_CCB_PROBE            = 0x01,
  96         DA_CCB_PROBE2           = 0x02,
  97         DA_CCB_BUFFER_IO        = 0x03,
  98         DA_CCB_WAITING          = 0x04,
  99         DA_CCB_DUMP             = 0x05,
 100         DA_CCB_TYPE_MASK        = 0x0F,
 101         DA_CCB_RETRY_UA         = 0x10
 102 } da_ccb_state;
 103
 104 /* Offsets into our private area for storing information */
 105 #define ccb_state       ppriv_field0
 106 #define ccb_bp          ppriv_ptr1
 107
 108 struct disk_params {
 109         u_int8_t  heads;
 110         u_int32_t cylinders;
 111         u_int8_t  secs_per_track;
 112         u_int32_t secsize;      /* Number of bytes/sector */
 113         u_int64_t sectors;      /* total number sectors */
 114 };
 115
 116 struct da_softc {
 117         struct   bio_queue_head bio_queue;
 118         SLIST_ENTRY(da_softc) links;
 119         LIST_HEAD(, ccb_hdr) pending_ccbs;
 120         da_state state;
 121         da_flags flags;
 122         da_quirks quirks;
 123         int      minimum_cmd_size;
 124         int      ordered_tag_count;
 125         int      outstanding_cmds;
 126         struct   disk_params params;
 127         struct   disk *disk;
 128         union    ccb saved_ccb;
 129         struct task             sysctl_task;
 130         struct sysctl_ctx_list  sysctl_ctx;
 131         struct sysctl_oid       *sysctl_tree;
 132         struct callout          sendordered_c;
 133 };
 134
 135 struct da_quirk_entry {
 136         struct scsi_inquiry_pattern inq_pat;
 137         da_quirks quirks;
 138 };
 139
 140 static const char quantum[] = "QUANTUM";
 141 static const char microp[] = "MICROP";
 142
 143 static struct da_quirk_entry da_quirk_table[] =
 144 {
 145         /* SPI, FC devices */
 146         {
 147                 /*
 148                  * Fujitsu M2513A MO drives.
 149                  * Tested devices: M2513A2 firmware versions 1200 & 1300.
 150                  * (dip switch selects whether T_DIRECT or T_OPTICAL device)
 151                  * Reported by: W.Scholten <whs@xs4all.nl>
 152                  */
 153                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "FUJITSU", "M2513A", "*"},
 154                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 155         },
 156         {
 157                 /* See above. */
 158                 {T_OPTICAL, SIP_MEDIA_REMOVABLE, "FUJITSU", "M2513A", "*"},
 159                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 160         },
 161         {
 162                 /*
 163                  * This particular Fujitsu drive doesn't like the
 164                  * synchronize cache command.
 165                  * Reported by: Tom Jackson <toj@gorilla.net>
 166                  */
 167                 {T_DIRECT, SIP_MEDIA_FIXED, "FUJITSU", "M2954*", "*"},
 168                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 169         },
 170         {
 171                 /*
 172                  * This drive doesn't like the synchronize cache command
 173                  * either.  Reported by: Matthew Jacob <mjacob@feral.com>
 174                  * in NetBSD PR kern/6027, August 24, 1998.
 175                  */
 176                 {T_DIRECT, SIP_MEDIA_FIXED, microp, "2217*", "*"},
 177                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 178         },
 179         {
 180                 /*
 181                  * This drive doesn't like the synchronize cache command
 182                  * either.  Reported by: Hellmuth Michaelis (hm@kts.org)
 183                  * (PR 8882).
 184                  */
 185                 {T_DIRECT, SIP_MEDIA_FIXED, microp, "2112*", "*"},
 186                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 187         },
 188         {
 189                 /*
 190                  * Doesn't like the synchronize cache command.
 191                  * Reported by: Blaz Zupan <blaz@gold.amis.net>
 192                  */
 193                 {T_DIRECT, SIP_MEDIA_FIXED, "NEC", "D3847*", "*"},
 194                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 195         },
 196         {
 197                 /*
 198                  * Doesn't like the synchronize cache command.
 199                  * Reported by: Blaz Zupan <blaz@gold.amis.net>
 200                  */
 201                 {T_DIRECT, SIP_MEDIA_FIXED, quantum, "MAVERICK 540S", "*"},
 202                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 203         },
 204         {
 205                 /*
 206                  * Doesn't like the synchronize cache command.
 207                  */
 208                 {T_DIRECT, SIP_MEDIA_FIXED, quantum, "LPS525S", "*"},
 209                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 210         },
 211         {
 212                 /*
 213                  * Doesn't like the synchronize cache command.
 214                  * Reported by: walter@pelissero.de
 215                  */
 216                 {T_DIRECT, SIP_MEDIA_FIXED, quantum, "LPS540S", "*"},
 217                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 218         },
 219         {
 220                 /*
 221                  * Doesn't work correctly with 6 byte reads/writes.
 222                  * Returns illegal request, and points to byte 9 of the
 223                  * 6-byte CDB.
 224                  * Reported by:  Adam McDougall <bsdx@spawnet.com>
 225                  */
 226                 {T_DIRECT, SIP_MEDIA_FIXED, quantum, "VIKING 4*", "*"},
 227                 /*quirks*/ DA_Q_NO_6_BYTE
 228         },
 229         {
 230                 /* See above. */
 231                 {T_DIRECT, SIP_MEDIA_FIXED, quantum, "VIKING 2*", "*"},
 232                 /*quirks*/ DA_Q_NO_6_BYTE
 233         },
 234         {
 235                 /*
 236                  * Doesn't like the synchronize cache command.
 237                  * Reported by: walter@pelissero.de
 238                  */
 239                 {T_DIRECT, SIP_MEDIA_FIXED, "CONNER", "CP3500*", "*"},
 240                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 241         },
 242         {
 243                 /*
 244                  * The CISS RAID controllers do not support SYNC_CACHE
 245                  */
 246                 {T_DIRECT, SIP_MEDIA_FIXED, "COMPAQ", "RAID*", "*"},
 247                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 248         },
 249         /* USB mass storage devices supported by umass(4) */
 250         {
 251                 /*
 252                  * EXATELECOM (Sigmatel) i-Bead 100/105 USB Flash MP3 Player
 253                  * PR: kern/51675
 254                  */
 255                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "EXATEL", "i-BEAD10*", "*"},
 256                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 257         },
 258         {
 259                 /*
 260                  * Power Quotient Int. (PQI) USB flash key
 261                  * PR: kern/53067
 262                  */
 263                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Generic*", "USB Flash Disk*",
 264                 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 265         },
 266         {
 267                 /*
 268                  * Creative Nomad MUVO mp3 player (USB)
 269                  * PR: kern/53094
 270                  */
 271                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "CREATIVE", "NOMAD_MUVO", "*"},
 272                 /*quirks*/ DA_Q_NO_SYNC_CACHE|DA_Q_NO_PREVENT
 273         },
 274         {
 275                 /*
 276                  * Jungsoft NEXDISK USB flash key
 277                  * PR: kern/54737
 278                  */
 279                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "JUNGSOFT", "NEXDISK*", "*"},
 280                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 281         },
 282         {
 283                 /*
 284                  * FreeDik USB Mini Data Drive
 285                  * PR: kern/54786
 286                  */
 287                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "FreeDik*", "Mini Data Drive",
 288                 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 289         },
 290         {
 291                 /*
 292                  * Sigmatel USB Flash MP3 Player
 293                  * PR: kern/57046
 294                  */
 295                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "SigmaTel", "MSCN", "*"},
 296                 /*quirks*/ DA_Q_NO_SYNC_CACHE|DA_Q_NO_PREVENT
 297         },
 298         {
 299                 /*
 300                  * Neuros USB Digital Audio Computer
 301                  * PR: kern/63645
 302                  */
 303                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "NEUROS", "dig. audio comp.",
 304                 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 305         },
 306         {
 307                 /*
 308                  * SEAGRAND NP-900 MP3 Player
 309                  * PR: kern/64563
 310                  */
 311                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "SEAGRAND", "NP-900*", "*"},
 312                 /*quirks*/ DA_Q_NO_SYNC_CACHE|DA_Q_NO_PREVENT
 313         },
 314         {
 315                 /*
 316                  * iRiver iFP MP3 player (with UMS Firmware)
 317                  * PR: kern/54881, i386/63941, kern/66124
 318                  */
 319                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "iRiver", "iFP*", "*"},
 320                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 321         },
 322         {
 323                 /*
 324                  * Frontier Labs NEX IA+ Digital Audio Player, rev 1.10/0.01
 325                  * PR: kern/70158
 326                  */
 327                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "FL" , "Nex*", "*"},
 328                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 329         },
 330         {
 331                 /*
 332                  * ZICPlay USB MP3 Player with FM
 333                  * PR: kern/75057
 334                  */
 335                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "ACTIONS*" , "USB DISK*", "*"},
 336                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 337         },
 338         {
 339                 /*
 340                  * TEAC USB floppy mechanisms
 341                  */
 342                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "TEAC" , "FD-05*", "*"},
 343                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 344         },
 345         {
 346                 /*
 347                  * Kingston DataTraveler II+ USB Pen-Drive.
 348                  * Reported by: Pawel Jakub Dawidek <pjd@FreeBSD.org>
 349                  */
 350                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Kingston" , "DataTraveler II+",
 351                 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 352         },
 353         {
 354                 /*
 355                  * Motorola E398 Mobile Phone (TransFlash memory card).
 356                  * Reported by: Wojciech A. Koszek <dunstan@FreeBSD.czest.pl>
 357                  * PR: usb/89889
 358                  */
 359                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Motorola" , "Motorola Phone",
 360                 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 361         },
 362         {
 363                 /*
 364                  * Qware BeatZkey! Pro
 365                  * PR: usb/79164
 366                  */
 367                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "GENERIC", "USB DISK DEVICE",
 368                 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 369         },
 370         {
 371                 /*
 372                  * Time DPA20B 1GB MP3 Player
 373                  * PR: usb/81846
 374                  */
 375                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "USB2.0*", "(FS) FLASH DISK*",
 376                 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 377         },
 378         {
 379                 /*
 380                  * Samsung USB key 128Mb
 381                  * PR: usb/90081
 382                  */
 383                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "USB-DISK", "FreeDik-FlashUsb",
 384                 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 385         },
 386         {
 387                 /*
 388                  * Kingston DataTraveler 2.0 USB Flash memory.
 389                  * PR: usb/89196
 390                  */
 391                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Kingston", "DataTraveler 2.0",
 392                 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 393         },
 394         {
 395                 /*
 396                  * Creative MUVO Slim mp3 player (USB)
 397                  * PR: usb/86131
 398                  */
 399                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "CREATIVE", "MuVo Slim",
 400                 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE|DA_Q_NO_PREVENT
 401                 },
 402         {
 403                 /*
 404                  * United MP5512 Portable MP3 Player (2-in-1 USB DISK/MP3)
 405                  * PR: usb/80487
 406                  */
 407                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Generic*", "MUSIC DISK",
 408                 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 409         },
 410         {
 411                 /*
 412                  * SanDisk Micro Cruzer 128MB
 413                  * PR: usb/75970
 414                  */
 415                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "SanDisk" , "Micro Cruzer",
 416                 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 417         },
 418         {
 419                 /*
 420                  * TOSHIBA TransMemory USB sticks
 421                  * PR: kern/94660
 422                  */
 423                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "TOSHIBA", "TransMemory",
 424                 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 425         },
 426         {
 427                 /*
 428                  * PNY USB Flash keys
 429                  * PR: usb/75578, usb/72344, usb/65436
 430                  */
 431                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "*" , "USB DISK*",
 432                 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 433         },
 434         {
 435                 /*
 436                  * Genesys 6-in-1 Card Reader
 437                  * PR: usb/94647
 438                  */
 439                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Generic*", "STORAGE DEVICE*",
 440                 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 441         },
 442         {
 443                 /*
 444                  * Rekam Digital CAMERA
 445                  * PR: usb/98713
 446                  */
 447                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "CAMERA*", "4MP-9J6*",
 448                 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 449         },
 450         {
 451                 /*
 452                  * iRiver H10 MP3 player
 453                  * PR: usb/102547
 454                  */
 455                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "iriver", "H10*",
 456                 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 457         },
 458         {
 459                 /*
 460                  * X-Micro Flash Disk
 461                  * PR: usb/96901
 462                  */
 463                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "X-Micro", "Flash Disk",
 464                 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 465         },
 466         {
 467                 /*
 468                  * EasyMP3 EM732X USB 2.0 Flash MP3 Player
 469                  * PR: usb/96546
 470                  */
 471                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "EM732X", "MP3 Player*",
 472                 "1.0"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 473         },
 474 };
 475
 476 static  disk_strategy_t dastrategy;
 477 static  dumper_t        dadump;
 478 static  periph_init_t   dainit;
 479 static  void            daasync(void *callback_arg, u_int32_t code,
 480                                 struct cam_path *path, void *arg);
 481 static  void            dasysctlinit(void *context, int pending);
 482 static  int             dacmdsizesysctl(SYSCTL_HANDLER_ARGS);
 483 static  periph_ctor_t   daregister;
 484 static  periph_dtor_t   dacleanup;
 485 static  periph_start_t  dastart;
 486 static  periph_oninv_t  daoninvalidate;
 487 static  void            dadone(struct cam_periph *periph,
 488                                union ccb *done_ccb);
 489 static  int             daerror(union ccb *ccb, u_int32_t cam_flags,
 490                                 u_int32_t sense_flags);
 491 static void             daprevent(struct cam_periph *periph, int action);
 492 static int              dagetcapacity(struct cam_periph *periph);
 493 static void             dasetgeom(struct cam_periph *periph, uint32_t block_len,
 494                                   uint64_t maxsector);
 495 static timeout_t        dasendorderedtag;
 496 static void             dashutdown(void *arg, int howto);
 497
 498 #ifndef DA_DEFAULT_TIMEOUT
 499 #define DA_DEFAULT_TIMEOUT 60   /* Timeout in seconds */
 500 #endif
 501
 502 #ifndef DA_DEFAULT_RETRY
 503 #define DA_DEFAULT_RETRY        4
 504 #endif
 505
 506 #ifndef DA_DEFAULT_SEND_ORDERED
 507 #define DA_DEFAULT_SEND_ORDERED 1
 508 #endif
 509
 510
 511 static int da_retry_count = DA_DEFAULT_RETRY;
 512 static int da_default_timeout = DA_DEFAULT_TIMEOUT;
 513 static int da_send_ordered = DA_DEFAULT_SEND_ORDERED;
 514
 515 SYSCTL_NODE(_kern_cam, OID_AUTO, da, CTLFLAG_RD, 0,
 516             "CAM Direct Access Disk driver");
 517 SYSCTL_INT(_kern_cam_da, OID_AUTO, retry_count, CTLFLAG_RW,
 518            &da_retry_count, 0, "Normal I/O retry count");
 519 TUNABLE_INT("kern.cam.da.retry_count", &da_retry_count);
 520 SYSCTL_INT(_kern_cam_da, OID_AUTO, default_timeout, CTLFLAG_RW,
 521            &da_default_timeout, 0, "Normal I/O timeout (in seconds)");
 522 TUNABLE_INT("kern.cam.da.default_timeout", &da_default_timeout);
 523 SYSCTL_INT(_kern_cam_da, OID_AUTO, da_send_ordered, CTLFLAG_RW,
 524            &da_send_ordered, 0, "Send Ordered Tags");
 525 TUNABLE_INT("kern.cam.da.da_send_ordered", &da_send_ordered);
 526
 527 /*
 528  * DA_ORDEREDTAG_INTERVAL determines how often, relative
 529  * to the default timeout, we check to see whether an ordered
 530  * tagged transaction is appropriate to prevent simple tag
 531  * starvation.  Since we'd like to ensure that there is at least
 532  * 1/2 of the timeout length left for a starved transaction to
 533  * complete after we've sent an ordered tag, we must poll at least
 534  * four times in every timeout period.  This takes care of the worst
 535  * case where a starved transaction starts during an interval that
 536  * meets the requirement "don't send an ordered tag" test so it takes
 537  * us two intervals to determine that a tag must be sent.
 538  */
 539 #ifndef DA_ORDEREDTAG_INTERVAL
 540 #define DA_ORDEREDTAG_INTERVAL 4
 541 #endif
 542
 543 static struct periph_driver dadriver =
 544 {
 545         dainit, "da",
 546         TAILQ_HEAD_INITIALIZER(dadriver.units), /* generation */ 0
 547 };
 548
 549 PERIPHDRIVER_DECLARE(da, dadriver);
 550
 551 MALLOC_DEFINE(M_SCSIDA, "scsi_da", "scsi_da buffers");
 552
 553 static int
 554 daopen(struct disk *dp)
 555 {
 556         struct cam_periph *periph;
 557         struct da_softc *softc;
 558         int unit;
 559         int error;
 560
 561         periph = (struct cam_periph *)dp->d_drv1;
 562         if (periph == NULL) {
 563                 return (ENXIO);
 564         }
 565
 566         if (cam_periph_acquire(periph) != CAM_REQ_CMP) {
 567                 return(ENXIO);
 568         }
 569
 570         cam_periph_lock(periph);
 571         if ((error = cam_periph_hold(periph, PRIBIO|PCATCH)) != 0) {
 572                 cam_periph_unlock(periph);
 573                 cam_periph_release(periph);
 574                 return (error);
 575         }
 576
 577         unit = periph->unit_number;
 578         softc = (struct da_softc *)periph->softc;
 579         softc->flags |= DA_FLAG_OPEN;
 580
 581         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE,
 582             ("daopen: disk=%s%d (unit %d)\n", dp->d_name, dp->d_unit,
 583              unit));
 584
 585         if ((softc->flags & DA_FLAG_PACK_INVALID) != 0) {
 586                 /* Invalidate our pack information. */
 587                 softc->flags &= ~DA_FLAG_PACK_INVALID;
 588         }
 589
 590         error = dagetcapacity(periph);
 591
 592         if (error == 0) {
 593
 594                 softc->disk->d_sectorsize = softc->params.secsize;
 595                 softc->disk->d_mediasize = softc->params.secsize * (off_t)softc->params.sectors;
 596                 /* XXX: these are not actually "firmware" values, so they may be wrong */
 597                 softc->disk->d_fwsectors = softc->params.secs_per_track;
 598                 softc->disk->d_fwheads = softc->params.heads;
 599                 softc->disk->d_devstat->block_size = softc->params.secsize;
 600                 softc->disk->d_devstat->flags &= ~DEVSTAT_BS_UNAVAILABLE;
 601         }
 602
 603         if (error == 0) {
 604                 if ((softc->flags & DA_FLAG_PACK_REMOVABLE) != 0 &&
 605                     (softc->quirks & DA_Q_NO_PREVENT) == 0)
 606                         daprevent(periph, PR_PREVENT);
 607         } else {
 608                 softc->flags &= ~DA_FLAG_OPEN;
 609                 cam_periph_release(periph);
 610         }
 611         cam_periph_unhold(periph);
 612         cam_periph_unlock(periph);
 613         return (error);
 614 }
 615
 616 static int
 617 daclose(struct disk *dp)
 618 {
 619         struct  cam_periph *periph;
 620         struct  da_softc *softc;
 621         int error;
 622
 623         periph = (struct cam_periph *)dp->d_drv1;
 624         if (periph == NULL)
 625                 return (ENXIO);
 626
 627         cam_periph_lock(periph);
 628         if ((error = cam_periph_hold(periph, PRIBIO)) != 0) {
 629                 cam_periph_unlock(periph);
 630                 cam_periph_release(periph);
 631                 return (error);
 632         }
 633
 634         softc = (struct da_softc *)periph->softc;
 635
 636         if ((softc->quirks & DA_Q_NO_SYNC_CACHE) == 0) {
 637                 union   ccb *ccb;
 638
 639                 ccb = cam_periph_getccb(periph, /*priority*/1);
 640
 641                 scsi_synchronize_cache(&ccb->csio,
 642                                        /*retries*/1,
 643                                        /*cbfcnp*/dadone,
 644                                        MSG_SIMPLE_Q_TAG,
 645                                        /*begin_lba*/0,/* Cover the whole disk */
 646                                        /*lb_count*/0,
 647                                        SSD_FULL_SIZE,
 648                                        5 * 60 * 1000);
 649
 650                 cam_periph_runccb(ccb, /*error_routine*/NULL, /*cam_flags*/0,
 651                                   /*sense_flags*/SF_RETRY_UA,
 652                                   softc->disk->d_devstat);
 653
 654                 if ((ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
 655                         if ((ccb->ccb_h.status & CAM_STATUS_MASK) ==
 656                              CAM_SCSI_STATUS_ERROR) {
 657                                 int asc, ascq;
 658                                 int sense_key, error_code;
 659
 660                                 scsi_extract_sense(&ccb->csio.sense_data,
 661                                                    &error_code,
 662                                                    &sense_key,
 663                                                    &asc, &ascq);
 664                                 if (sense_key != SSD_KEY_ILLEGAL_REQUEST)
 665                                         scsi_sense_print(&ccb->csio);
 666                         } else {
 667                                 xpt_print(periph->path, "Synchronize cache "
 668                                     "failed, status == 0x%x, scsi status == "
 669                                     "0x%x\n", ccb->csio.ccb_h.status,
 670                                     ccb->csio.scsi_status);
 671                         }
 672                 }
 673
 674                 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
 675                         cam_release_devq(ccb->ccb_h.path,
 676                                          /*relsim_flags*/0,
 677                                          /*reduction*/0,
 678                                          /*timeout*/0,
 679                                          /*getcount_only*/0);
 680
 681                 xpt_release_ccb(ccb);
 682
 683         }
 684
 685         if ((softc->flags & DA_FLAG_PACK_REMOVABLE) != 0) {
 686                 if ((softc->quirks & DA_Q_NO_PREVENT) == 0)
 687                         daprevent(periph, PR_ALLOW);
 688                 /*
 689                  * If we've got removeable media, mark the blocksize as
 690                  * unavailable, since it could change when new media is
 691                  * inserted.
 692                  */
 693                 softc->disk->d_devstat->flags |= DEVSTAT_BS_UNAVAILABLE;
 694         }
 695
 696         softc->flags &= ~DA_FLAG_OPEN;
 697         cam_periph_unhold(periph);
 698         cam_periph_release(periph);
 699         cam_periph_unlock(periph);
 700         return (0);
 701 }
 702
 703 /*
 704  * Actually translate the requested transfer into one the physical driver
 705  * can understand.  The transfer is described by a buf and will include
 706  * only one physical transfer.
 707  */
 708 static void
 709 dastrategy(struct bio *bp)
 710 {
 711         struct cam_periph *periph;
 712         struct da_softc *softc;
 713
 714         periph = (struct cam_periph *)bp->bio_disk->d_drv1;
 715         if (periph == NULL) {
 716                 biofinish(bp, NULL, ENXIO);
 717                 return;
 718         }
 719         softc = (struct da_softc *)periph->softc;
 720
 721         cam_periph_lock(periph);
 722
 723 #if 0
 724         /*
 725          * check it's not too big a transfer for our adapter
 726          */
 727         scsi_minphys(bp,&sd_switch);
 728 #endif
 729
 730         /*
 731          * Mask interrupts so that the pack cannot be invalidated until
 732          * after we are in the queue.  Otherwise, we might not properly
 733          * clean up one of the buffers.
 734          */
 735
 736         /*
 737          * If the device has been made invalid, error out
 738          */
 739         if ((softc->flags & DA_FLAG_PACK_INVALID)) {
 740                 cam_periph_unlock(periph);
 741                 biofinish(bp, NULL, ENXIO);
 742                 return;
 743         }
 744
 745         /*
 746          * Place it in the queue of disk activities for this disk
 747          */
 748         bioq_disksort(&softc->bio_queue, bp);
 749
 750         /*
 751          * Schedule ourselves for performing the work.
 752          */
 753         xpt_schedule(periph, /* XXX priority */1);
 754         cam_periph_unlock(periph);
 755
 756         return;
 757 }
 758
 759 static int
 760 dadump(void *arg, void *virtual, vm_offset_t physical, off_t offset, size_t length)
 761 {
 762         struct      cam_periph *periph;
 763         struct      da_softc *softc;
 764         u_int       secsize;
 765         struct      ccb_scsiio csio;
 766         struct      disk *dp;
 767
 768         dp = arg;
 769         periph = dp->d_drv1;
 770         if (periph == NULL)
 771                 return (ENXIO);
 772         softc = (struct da_softc *)periph->softc;
 773         cam_periph_lock(periph);
 774         secsize = softc->params.secsize;
 775
 776         if ((softc->flags & DA_FLAG_PACK_INVALID) != 0) {
 777                 cam_periph_unlock(periph);
 778                 return (ENXIO);
 779         }
 780
 781         if (length > 0) {
 782                 periph->flags |= CAM_PERIPH_POLLED;
 783                 xpt_setup_ccb(&csio.ccb_h, periph->path, /*priority*/1);
 784                 csio.ccb_h.ccb_state = DA_CCB_DUMP;
 785                 scsi_read_write(&csio,
 786                                 /*retries*/1,
 787                                 dadone,
 788                                 MSG_ORDERED_Q_TAG,
 789                                 /*read*/FALSE,
 790                                 /*byte2*/0,
 791                                 /*minimum_cmd_size*/ softc->minimum_cmd_size,
 792                                 offset / secsize,
 793                                 length / secsize,
 794                                 /*data_ptr*/(u_int8_t *) virtual,
 795                                 /*dxfer_len*/length,
 796                                 /*sense_len*/SSD_FULL_SIZE,
 797                                 DA_DEFAULT_TIMEOUT * 1000);
 798                 xpt_polled_action((union ccb *)&csio);
 799
 800                 if ((csio.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
 801                         printf("Aborting dump due to I/O error.\n");
 802                         if ((csio.ccb_h.status & CAM_STATUS_MASK) ==
 803                              CAM_SCSI_STATUS_ERROR)
 804                                 scsi_sense_print(&csio);
 805                         else
 806                                 printf("status == 0x%x, scsi status == 0x%x\n",
 807                                        csio.ccb_h.status, csio.scsi_status);
 808                         periph->flags |= CAM_PERIPH_POLLED;
 809                         return(EIO);
 810                 }
 811                 cam_periph_unlock(periph);
 812                 return(0);
 813         }
 814
 815         /*
 816          * Sync the disk cache contents to the physical media.
 817          */
 818         if ((softc->quirks & DA_Q_NO_SYNC_CACHE) == 0) {
 819
 820                 xpt_setup_ccb(&csio.ccb_h, periph->path, /*priority*/1);
 821                 csio.ccb_h.ccb_state = DA_CCB_DUMP;
 822                 scsi_synchronize_cache(&csio,
 823                                        /*retries*/1,
 824                                        /*cbfcnp*/dadone,
 825                                        MSG_SIMPLE_Q_TAG,
 826                                        /*begin_lba*/0,/* Cover the whole disk */
 827                                        /*lb_count*/0,
 828                                        SSD_FULL_SIZE,
 829                                        5 * 60 * 1000);
 830                 xpt_polled_action((union ccb *)&csio);
 831
 832                 if ((csio.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
 833                         if ((csio.ccb_h.status & CAM_STATUS_MASK) ==
 834                              CAM_SCSI_STATUS_ERROR) {
 835                                 int asc, ascq;
 836                                 int sense_key, error_code;
 837
 838                                 scsi_extract_sense(&csio.sense_data,
 839                                                    &error_code,
 840                                                    &sense_key,
 841                                                    &asc, &ascq);
 842                                 if (sense_key != SSD_KEY_ILLEGAL_REQUEST)
 843                                         scsi_sense_print(&csio);
 844                         } else {
 845                                 xpt_print(periph->path, "Synchronize cache "
 846                                     "failed, status == 0x%x, scsi status == "
 847                                     "0x%x\n", csio.ccb_h.status,
 848                                     csio.scsi_status);
 849                         }
 850                 }
 851         }
 852         periph->flags &= ~CAM_PERIPH_POLLED;
 853         cam_periph_unlock(periph);
 854         return (0);
 855 }
 856
 857 static void
 858 dainit(void)
 859 {
 860         cam_status status;
 861
 862         /*
 863          * Install a global async callback.  This callback will
 864          * receive async callbacks like "new device found".
 865          */
 866         status = xpt_register_async(AC_FOUND_DEVICE, daasync, NULL, NULL);
 867
 868         if (status != CAM_REQ_CMP) {
 869                 printf("da: Failed to attach master async callback "
 870                        "due to status 0x%x!\n", status);
 871         } else if (da_send_ordered) {
 872
 873                 /* Register our shutdown event handler */
 874                 if ((EVENTHANDLER_REGISTER(shutdown_post_sync, dashutdown,
 875                                            NULL, SHUTDOWN_PRI_DEFAULT)) == NULL)
 876                     printf("dainit: shutdown event registration failed!\n");
 877         }
 878 }
 879
 880 static void
 881 daoninvalidate(struct cam_periph *periph)
 882 {
 883         struct da_softc *softc;
 884
 885         softc = (struct da_softc *)periph->softc;
 886
 887         /*
 888          * De-register any async callbacks.
 889          */
 890         xpt_register_async(0, daasync, periph, periph->path);
 891
 892         softc->flags |= DA_FLAG_PACK_INVALID;
 893
 894         /*
 895          * Return all queued I/O with ENXIO.
 896          * XXX Handle any transactions queued to the card
 897          *     with XPT_ABORT_CCB.
 898          */
 899         bioq_flush(&softc->bio_queue, NULL, ENXIO);
 900
 901         disk_gone(softc->disk);
 902         xpt_print(periph->path, "lost device\n");
 903 }
 904
 905 static void
 906 dacleanup(struct cam_periph *periph)
 907 {
 908         struct da_softc *softc;
 909
 910         softc = (struct da_softc *)periph->softc;
 911
 912         xpt_print(periph->path, "removing device entry\n");
 913         /*
 914          * If we can't free the sysctl tree, oh well...
 915          */
 916         if ((softc->flags & DA_FLAG_SCTX_INIT) != 0
 917             && sysctl_ctx_free(&softc->sysctl_ctx) != 0) {
 918                 xpt_print(periph->path, "can't remove sysctl context\n");
 919         }
 920
 921         cam_periph_unlock(periph);
 922         disk_destroy(softc->disk);
 923         callout_drain(&softc->sendordered_c);
 924         cam_periph_lock(periph);
 925         free(softc, M_DEVBUF);
 926 }
 927
 928 static void
 929 daasync(void *callback_arg, u_int32_t code,
 930         struct cam_path *path, void *arg)
 931 {
 932         struct cam_periph *periph;
 933
 934         periph = (struct cam_periph *)callback_arg;
 935         switch (code) {
 936         case AC_FOUND_DEVICE:
 937         {
 938                 struct ccb_getdev *cgd;
 939                 struct cam_sim *sim;
 940                 cam_status status;
 941
 942                 cgd = (struct ccb_getdev *)arg;
 943                 if (cgd == NULL)
 944                         break;
 945
 946                 if (SID_TYPE(&cgd->inq_data) != T_DIRECT
 947                     && SID_TYPE(&cgd->inq_data) != T_RBC
 948                     && SID_TYPE(&cgd->inq_data) != T_OPTICAL)
 949                         break;
 950
 951                 /*
 952                  * Allocate a peripheral instance for
 953                  * this device and start the probe
 954                  * process.
 955                  */
 956                 sim = xpt_path_sim(cgd->ccb_h.path);
 957                 status = cam_periph_alloc(daregister, daoninvalidate,
 958                                           dacleanup, dastart,
 959                                           "da", CAM_PERIPH_BIO,
 960                                           cgd->ccb_h.path, daasync,
 961                                           AC_FOUND_DEVICE, cgd);
 962
 963                 if (status != CAM_REQ_CMP
 964                  && status != CAM_REQ_INPROG)
 965                         printf("daasync: Unable to attach to new device "
 966                                 "due to status 0x%x\n", status);
 967                 break;
 968         }
 969         case AC_SENT_BDR:
 970         case AC_BUS_RESET:
 971         {
 972                 struct da_softc *softc;
 973                 struct ccb_hdr *ccbh;
 974
 975                 softc = (struct da_softc *)periph->softc;
 976                 /*
 977                  * Don't fail on the expected unit attention
 978                  * that will occur.
 979                  */
 980                 softc->flags |= DA_FLAG_RETRY_UA;
 981                 LIST_FOREACH(ccbh, &softc->pending_ccbs, periph_links.le)
 982                         ccbh->ccb_state |= DA_CCB_RETRY_UA;
 983                 /* FALLTHROUGH*/
 984         }
 985         default:
 986                 cam_periph_async(periph, code, path, arg);
 987                 break;
 988         }
 989 }
 990
 991 static void
 992 dasysctlinit(void *context, int pending)
 993 {
 994         struct cam_periph *periph;
 995         struct da_softc *softc;
 996         char tmpstr[80], tmpstr2[80];
 997
 998         periph = (struct cam_periph *)context;
 999         if (cam_periph_acquire(periph) != CAM_REQ_CMP)
1000                 return;
1001
1002         softc = (struct da_softc *)periph->softc;
1003         snprintf(tmpstr, sizeof(tmpstr), "CAM DA unit %d", periph->unit_number);
1004         snprintf(tmpstr2, sizeof(tmpstr2), "%d", periph->unit_number);
1005
1006         mtx_lock(&Giant);
1007         sysctl_ctx_init(&softc->sysctl_ctx);
1008         softc->flags |= DA_FLAG_SCTX_INIT;
1009         softc->sysctl_tree = SYSCTL_ADD_NODE(&softc->sysctl_ctx,
1010                 SYSCTL_STATIC_CHILDREN(_kern_cam_da), OID_AUTO, tmpstr2,
1011                 CTLFLAG_RD, 0, tmpstr);
1012         if (softc->sysctl_tree == NULL) {
1013                 printf("dasysctlinit: unable to allocate sysctl tree\n");
1014                 mtx_unlock(&Giant);
1015                 cam_periph_release(periph);
1016                 return;
1017         }
1018
1019         /*
1020          * Now register the sysctl handler, so the user can the value on
1021          * the fly.
1022          */
1023         SYSCTL_ADD_PROC(&softc->sysctl_ctx,SYSCTL_CHILDREN(softc->sysctl_tree),
1024                 OID_AUTO, "minimum_cmd_size", CTLTYPE_INT | CTLFLAG_RW,
1025                 &softc->minimum_cmd_size, 0, dacmdsizesysctl, "I",
1026                 "Minimum CDB size");
1027
1028         mtx_unlock(&Giant);
1029         cam_periph_release(periph);
1030 }
1031
1032 static int
1033 dacmdsizesysctl(SYSCTL_HANDLER_ARGS)
1034 {
1035         int error, value;
1036
1037         value = *(int *)arg1;
1038
1039         error = sysctl_handle_int(oidp, &value, 0, req);
1040
1041         if ((error != 0)
1042          || (req->newptr == NULL))
1043                 return (error);
1044
1045         /*
1046          * Acceptable values here are 6, 10, 12 or 16.
1047          */
1048         if (value < 6)
1049                 value = 6;
1050         else if ((value > 6)
1051               && (value <= 10))
1052                 value = 10;
1053         else if ((value > 10)
1054               && (value <= 12))
1055                 value = 12;
1056         else if (value > 12)
1057                 value = 16;
1058
1059         *(int *)arg1 = value;
1060
1061         return (0);
1062 }
1063
1064 static cam_status
1065 daregister(struct cam_periph *periph, void *arg)
1066 {
1067         struct da_softc *softc;
1068         struct ccb_pathinq cpi;
1069         struct ccb_getdev *cgd;
1070         char tmpstr[80];
1071         caddr_t match;
1072
1073         cgd = (struct ccb_getdev *)arg;
1074         if (periph == NULL) {
1075                 printf("daregister: periph was NULL!!\n");
1076                 return(CAM_REQ_CMP_ERR);
1077         }
1078
1079         if (cgd == NULL) {
1080                 printf("daregister: no getdev CCB, can't register device\n");
1081                 return(CAM_REQ_CMP_ERR);
1082         }
1083
1084         softc = (struct da_softc *)malloc(sizeof(*softc), M_DEVBUF,
1085             M_NOWAIT|M_ZERO);
1086
1087         if (softc == NULL) {
1088                 printf("daregister: Unable to probe new device. "
1089                        "Unable to allocate softc\n");
1090                 return(CAM_REQ_CMP_ERR);
1091         }
1092
1093         LIST_INIT(&softc->pending_ccbs);
1094         softc->state = DA_STATE_PROBE;
1095         bioq_init(&softc->bio_queue);
1096         if (SID_IS_REMOVABLE(&cgd->inq_data))
1097                 softc->flags |= DA_FLAG_PACK_REMOVABLE;
1098         if ((cgd->inq_data.flags & SID_CmdQue) != 0)
1099                 softc->flags |= DA_FLAG_TAGGED_QUEUING;
1100
1101         periph->softc = softc;
1102
1103         /*
1104          * See if this device has any quirks.
1105          */
1106         match = cam_quirkmatch((caddr_t)&cgd->inq_data,
1107                                (caddr_t)da_quirk_table,
1108                                sizeof(da_quirk_table)/sizeof(*da_quirk_table),
1109                                sizeof(*da_quirk_table), scsi_inquiry_match);
1110
1111         if (match != NULL)
1112                 softc->quirks = ((struct da_quirk_entry *)match)->quirks;
1113         else
1114                 softc->quirks = DA_Q_NONE;
1115
1116         /* Check if the SIM does not want 6 byte commands */
1117         xpt_setup_ccb(&cpi.ccb_h, periph->path, /*priority*/1);
1118         cpi.ccb_h.func_code = XPT_PATH_INQ;
1119         xpt_action((union ccb *)&cpi);
1120         if (cpi.ccb_h.status == CAM_REQ_CMP && (cpi.hba_misc & PIM_NO_6_BYTE))
1121                 softc->quirks |= DA_Q_NO_6_BYTE;
1122
1123         TASK_INIT(&softc->sysctl_task, 0, dasysctlinit, periph);
1124
1125         /*
1126          * RBC devices don't have to support READ(6), only READ(10).
1127          */
1128         if (softc->quirks & DA_Q_NO_6_BYTE || SID_TYPE(&cgd->inq_data) == T_RBC)
1129                 softc->minimum_cmd_size = 10;
1130         else
1131                 softc->minimum_cmd_size = 6;
1132
1133         /*
1134          * Load the user's default, if any.
1135          */
1136         snprintf(tmpstr, sizeof(tmpstr), "kern.cam.da.%d.minimum_cmd_size",
1137                  periph->unit_number);
1138         TUNABLE_INT_FETCH(tmpstr, &softc->minimum_cmd_size);
1139
1140         /*
1141          * 6, 10, 12 and 16 are the currently permissible values.
1142          */
1143         if (softc->minimum_cmd_size < 6)
1144                 softc->minimum_cmd_size = 6;
1145         else if ((softc->minimum_cmd_size > 6)
1146               && (softc->minimum_cmd_size <= 10))
1147                 softc->minimum_cmd_size = 10;
1148         else if ((softc->minimum_cmd_size > 10)
1149               && (softc->minimum_cmd_size <= 12))
1150                 softc->minimum_cmd_size = 12;
1151         else if (softc->minimum_cmd_size > 12)
1152                 softc->minimum_cmd_size = 16;
1153
1154         /*
1155          * Register this media as a disk
1156          */
1157
1158         mtx_unlock(periph->sim->mtx);
1159         softc->disk = disk_alloc();
1160         softc->disk->d_open = daopen;
1161         softc->disk->d_close = daclose;
1162         softc->disk->d_strategy = dastrategy;
1163         softc->disk->d_dump = dadump;
1164         softc->disk->d_name = "da";
1165         softc->disk->d_drv1 = periph;
1166         softc->disk->d_maxsize = DFLTPHYS; /* XXX: probably not arbitrary */
1167         softc->disk->d_unit = periph->unit_number;
1168         softc->disk->d_flags = 0;
1169         if ((softc->quirks & DA_Q_NO_SYNC_CACHE) == 0)
1170                 softc->disk->d_flags |= DISKFLAG_CANFLUSHCACHE;
1171         disk_create(softc->disk, DISK_VERSION);
1172         mtx_lock(periph->sim->mtx);
1173
1174         /*
1175          * Add async callbacks for bus reset and
1176          * bus device reset calls.  I don't bother
1177          * checking if this fails as, in most cases,
1178          * the system will function just fine without
1179          * them and the only alternative would be to
1180          * not attach the device on failure.
1181          */
1182         xpt_register_async(AC_SENT_BDR | AC_BUS_RESET | AC_LOST_DEVICE,
1183                            daasync, periph, periph->path);
1184
1185         /*
1186          * Take an exclusive refcount on the periph while dastart is called
1187          * to finish the probe.  The reference will be dropped in dadone at
1188          * the end of probe.
1189          */
1190         (void)cam_periph_hold(periph, PRIBIO);
1191         xpt_schedule(periph, /*priority*/5);
1192
1193         /*
1194          * Schedule a periodic event to occasionally send an
1195          * ordered tag to a device.
1196          */
1197         callout_init_mtx(&softc->sendordered_c, periph->sim->mtx, 0);
1198         callout_reset(&softc->sendordered_c,
1199             (DA_DEFAULT_TIMEOUT * hz) / DA_ORDEREDTAG_INTERVAL,
1200             dasendorderedtag, softc);
1201
1202         return(CAM_REQ_CMP);
1203 }
1204
1205 static void
1206 dastart(struct cam_periph *periph, union ccb *start_ccb)
1207 {
1208         struct da_softc *softc;
1209
1210         softc = (struct da_softc *)periph->softc;
1211
1212         switch (softc->state) {
1213         case DA_STATE_NORMAL:
1214         {
1215                 /* Pull a buffer from the queue and get going on it */
1216                 struct bio *bp;
1217
1218                 /*
1219                  * See if there is a buf with work for us to do..
1220                  */
1221                 bp = bioq_first(&softc->bio_queue);
1222                 if (periph->immediate_priority <= periph->pinfo.priority) {
1223                         CAM_DEBUG_PRINT(CAM_DEBUG_SUBTRACE,
1224                                         ("queuing for immediate ccb\n"));
1225                         start_ccb->ccb_h.ccb_state = DA_CCB_WAITING;
1226                         SLIST_INSERT_HEAD(&periph->ccb_list, &start_ccb->ccb_h,
1227                                           periph_links.sle);
1228                         periph->immediate_priority = CAM_PRIORITY_NONE;
1229                         wakeup(&periph->ccb_list);
1230                 } else if (bp == NULL) {
1231                         xpt_release_ccb(start_ccb);
1232                 } else {
1233                         u_int8_t tag_code;
1234
1235                         bioq_remove(&softc->bio_queue, bp);
1236
1237                         if ((softc->flags & DA_FLAG_NEED_OTAG) != 0) {
1238                                 softc->flags &= ~DA_FLAG_NEED_OTAG;
1239                                 softc->ordered_tag_count++;
1240                                 tag_code = MSG_ORDERED_Q_TAG;
1241                         } else {
1242                                 tag_code = MSG_SIMPLE_Q_TAG;
1243                         }
1244                         switch (bp->bio_cmd) {
1245                         case BIO_READ:
1246                         case BIO_WRITE:
1247                                 scsi_read_write(&start_ccb->csio,
1248                                                 /*retries*/da_retry_count,
1249                                                 /*cbfcnp*/dadone,
1250                                                 /*tag_action*/tag_code,
1251                                                 /*read_op*/bp->bio_cmd == BIO_READ,
1252                                                 /*byte2*/0,
1253                                                 softc->minimum_cmd_size,
1254                                                 /*lba*/bp->bio_pblkno,
1255                                                 /*block_count*/bp->bio_bcount /
1256                                                 softc->params.secsize,
1257                                                 /*data_ptr*/ bp->bio_data,
1258                                                 /*dxfer_len*/ bp->bio_bcount,
1259                                                 /*sense_len*/SSD_FULL_SIZE,
1260                                                 /*timeout*/da_default_timeout*1000);
1261                                 break;
1262                         case BIO_FLUSH:
1263                                 scsi_synchronize_cache(&start_ccb->csio,
1264                                                        /*retries*/1,
1265                                                        /*cbfcnp*/dadone,
1266                                                        MSG_SIMPLE_Q_TAG,
1267                                                        /*begin_lba*/0,/* Cover the whole disk */
1268                                                        /*lb_count*/0,
1269                                                        SSD_FULL_SIZE,
1270                                                        /*timeout*/da_default_timeout*1000);
1271                                 break;
1272                         }
1273                         start_ccb->ccb_h.ccb_state = DA_CCB_BUFFER_IO;
1274
1275                         /*
1276                          * Block out any asyncronous callbacks
1277                          * while we touch the pending ccb list.
1278                          */
1279                         LIST_INSERT_HEAD(&softc->pending_ccbs,
1280                                          &start_ccb->ccb_h, periph_links.le);
1281                         softc->outstanding_cmds++;
1282
1283                         /* We expect a unit attention from this device */
1284                         if ((softc->flags & DA_FLAG_RETRY_UA) != 0) {
1285                                 start_ccb->ccb_h.ccb_state |= DA_CCB_RETRY_UA;
1286                                 softc->flags &= ~DA_FLAG_RETRY_UA;
1287                         }
1288
1289                         start_ccb->ccb_h.ccb_bp = bp;
1290                         bp = bioq_first(&softc->bio_queue);
1291
1292                         xpt_action(start_ccb);
1293                 }
1294
1295                 if (bp != NULL) {
1296                         /* Have more work to do, so ensure we stay scheduled */
1297                         xpt_schedule(periph, /* XXX priority */1);
1298                 }
1299                 break;
1300         }
1301         case DA_STATE_PROBE:
1302         {
1303                 struct ccb_scsiio *csio;
1304                 struct scsi_read_capacity_data *rcap;
1305
1306                 rcap = (struct scsi_read_capacity_data *)
1307                     malloc(sizeof(*rcap), M_SCSIDA, M_NOWAIT|M_ZERO);
1308                 if (rcap == NULL) {
1309                         printf("dastart: Couldn't malloc read_capacity data\n");
1310                         /* da_free_periph??? */
1311                         break;
1312                 }
1313                 csio = &start_ccb->csio;
1314                 scsi_read_capacity(csio,
1315                                    /*retries*/4,
1316                                    dadone,
1317                                    MSG_SIMPLE_Q_TAG,
1318                                    rcap,
1319                                    SSD_FULL_SIZE,
1320                                    /*timeout*/5000);
1321                 start_ccb->ccb_h.ccb_bp = NULL;
1322                 start_ccb->ccb_h.ccb_state = DA_CCB_PROBE;
1323                 xpt_action(start_ccb);
1324                 break;
1325         }
1326         case DA_STATE_PROBE2:
1327         {
1328                 struct ccb_scsiio *csio;
1329                 struct scsi_read_capacity_data_long *rcaplong;
1330
1331                 rcaplong = (struct scsi_read_capacity_data_long *)
1332                         malloc(sizeof(*rcaplong), M_SCSIDA, M_NOWAIT|M_ZERO);
1333                 if (rcaplong == NULL) {
1334                         printf("dastart: Couldn't malloc read_capacity data\n");
1335                         /* da_free_periph??? */
1336                         break;
1337                 }
1338                 csio = &start_ccb->csio;
1339                 scsi_read_capacity_16(csio,
1340                                       /*retries*/ 4,
1341                                       /*cbfcnp*/ dadone,
1342                                       /*tag_action*/ MSG_SIMPLE_Q_TAG,
1343                                       /*lba*/ 0,
1344                                       /*reladr*/ 0,
1345                                       /*pmi*/ 0,
1346                                       rcaplong,
1347                                       /*sense_len*/ SSD_FULL_SIZE,
1348                                       /*timeout*/ 60000);
1349                 start_ccb->ccb_h.ccb_bp = NULL;
1350                 start_ccb->ccb_h.ccb_state = DA_CCB_PROBE2;
1351                 xpt_action(start_ccb);
1352                 break;
1353         }
1354         }
1355 }
1356
1357 static int
1358 cmd6workaround(union ccb *ccb)
1359 {
1360         struct scsi_rw_6 cmd6;
1361         struct scsi_rw_10 *cmd10;
1362         struct da_softc *softc;
1363         u_int8_t *cdb;
1364         int frozen;
1365
1366         cdb = ccb->csio.cdb_io.cdb_bytes;
1367
1368         /* Translation only possible if CDB is an array and cmd is R/W6 */
1369         if ((ccb->ccb_h.flags & CAM_CDB_POINTER) != 0 ||
1370             (*cdb != READ_6 && *cdb != WRITE_6))
1371                 return 0;
1372
1373         xpt_print(ccb->ccb_h.path, "READ(6)/WRITE(6) not supported, "
1374             "increasing minimum_cmd_size to 10.\n");
1375         softc = (struct da_softc *)xpt_path_periph(ccb->ccb_h.path)->softc;
1376         softc->minimum_cmd_size = 10;
1377
1378         bcopy(cdb, &cmd6, sizeof(struct scsi_rw_6));
1379         cmd10 = (struct scsi_rw_10 *)cdb;
1380         cmd10->opcode = (cmd6.opcode == READ_6) ? READ_10 : WRITE_10;
1381         cmd10->byte2 = 0;
1382         scsi_ulto4b(scsi_3btoul(cmd6.addr), cmd10->addr);
1383         cmd10->reserved = 0;
1384         scsi_ulto2b(cmd6.length, cmd10->length);
1385         cmd10->control = cmd6.control;
1386         ccb->csio.cdb_len = sizeof(*cmd10);
1387
1388         /* Requeue request, unfreezing queue if necessary */
1389         frozen = (ccb->ccb_h.status & CAM_DEV_QFRZN) != 0;
1390         ccb->ccb_h.status = CAM_REQUEUE_REQ;
1391         xpt_action(ccb);
1392         if (frozen) {
1393                 cam_release_devq(ccb->ccb_h.path,
1394                                  /*relsim_flags*/0,
1395                                  /*reduction*/0,
1396                                  /*timeout*/0,
1397                                  /*getcount_only*/0);
1398         }
1399         return (ERESTART);
1400 }
1401
1402 static void
1403 dadone(struct cam_periph *periph, union ccb *done_ccb)
1404 {
1405         struct da_softc *softc;
1406         struct ccb_scsiio *csio;
1407
1408         softc = (struct da_softc *)periph->softc;
1409         csio = &done_ccb->csio;
1410         switch (csio->ccb_h.ccb_state & DA_CCB_TYPE_MASK) {
1411         case DA_CCB_BUFFER_IO:
1412         {
1413                 struct bio *bp;
1414
1415                 bp = (struct bio *)done_ccb->ccb_h.ccb_bp;
1416                 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1417                         int error;
1418                         int sf;
1419
1420                         if ((csio->ccb_h.ccb_state & DA_CCB_RETRY_UA) != 0)
1421                                 sf = SF_RETRY_UA;
1422                         else
1423                                 sf = 0;
1424
1425                         error = daerror(done_ccb, CAM_RETRY_SELTO, sf);
1426                         if (error == ERESTART) {
1427                                 /*
1428                                  * A retry was scheuled, so
1429                                  * just return.
1430                                  */
1431                                 return;
1432                         }
1433                         if (error != 0) {
1434
1435                                 if (error == ENXIO) {
1436                                         /*
1437                                          * Catastrophic error.  Mark our pack as
1438                                          * invalid.
1439                                          */
1440                                         /*
1441                                          * XXX See if this is really a media
1442                                          * XXX change first?
1443                                          */
1444                                         xpt_print(periph->path,
1445                                             "Invalidating pack\n");
1446                                         softc->flags |= DA_FLAG_PACK_INVALID;
1447                                 }
1448
1449                                 /*
1450                                  * return all queued I/O with EIO, so that
1451                                  * the client can retry these I/Os in the
1452                                  * proper order should it attempt to recover.
1453                                  */
1454                                 bioq_flush(&softc->bio_queue, NULL, EIO);
1455                                 bp->bio_error = error;
1456                                 bp->bio_resid = bp->bio_bcount;
1457                                 bp->bio_flags |= BIO_ERROR;
1458                         } else {
1459                                 bp->bio_resid = csio->resid;
1460                                 bp->bio_error = 0;
1461                                 if (bp->bio_resid != 0)
1462                                         bp->bio_flags |= BIO_ERROR;
1463                         }
1464                         if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
1465                                 cam_release_devq(done_ccb->ccb_h.path,
1466                                                  /*relsim_flags*/0,
1467                                                  /*reduction*/0,
1468                                                  /*timeout*/0,
1469                                                  /*getcount_only*/0);
1470                 } else {
1471                         if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
1472                                 panic("REQ_CMP with QFRZN");
1473                         bp->bio_resid = csio->resid;
1474                         if (csio->resid > 0)
1475                                 bp->bio_flags |= BIO_ERROR;
1476                 }
1477
1478                 /*
1479                  * Block out any asyncronous callbacks
1480                  * while we touch the pending ccb list.
1481                  */
1482                 LIST_REMOVE(&done_ccb->ccb_h, periph_links.le);
1483                 softc->outstanding_cmds--;
1484                 if (softc->outstanding_cmds == 0)
1485                         softc->flags |= DA_FLAG_WENT_IDLE;
1486
1487                 biodone(bp);
1488                 break;
1489         }
1490         case DA_CCB_PROBE:
1491         case DA_CCB_PROBE2:
1492         {
1493                 struct     scsi_read_capacity_data *rdcap;
1494                 struct     scsi_read_capacity_data_long *rcaplong;
1495                 char       announce_buf[80];
1496
1497                 rdcap = NULL;
1498                 rcaplong = NULL;
1499                 if (softc->state == DA_STATE_PROBE)
1500                         rdcap =(struct scsi_read_capacity_data *)csio->data_ptr;
1501                 else
1502                         rcaplong = (struct scsi_read_capacity_data_long *)
1503                                 csio->data_ptr;
1504
1505                 if ((csio->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP) {
1506                         struct disk_params *dp;
1507                         uint32_t block_size;
1508                         uint64_t maxsector;
1509
1510                         if (softc->state == DA_STATE_PROBE) {
1511                                 block_size = scsi_4btoul(rdcap->length);
1512                                 maxsector = scsi_4btoul(rdcap->addr);
1513
1514                                 /*
1515                                  * According to SBC-2, if the standard 10
1516                                  * byte READ CAPACITY command returns 2^32,
1517                                  * we should issue the 16 byte version of
1518                                  * the command, since the device in question
1519                                  * has more sectors than can be represented
1520                                  * with the short version of the command.
1521                                  */
1522                                 if (maxsector == 0xffffffff) {
1523                                         softc->state = DA_STATE_PROBE2;
1524                                         free(rdcap, M_SCSIDA);
1525                                         xpt_release_ccb(done_ccb);
1526                                         xpt_schedule(periph, /*priority*/5);
1527                                         return;
1528                                 }
1529                         } else {
1530                                 block_size = scsi_4btoul(rcaplong->length);
1531                                 maxsector = scsi_8btou64(rcaplong->addr);
1532                         }
1533
1534                         /*
1535                          * Because GEOM code just will panic us if we
1536                          * give them an 'illegal' value we'll avoid that
1537                          * here.
1538                          */
1539                         if (block_size >= MAXPHYS || block_size == 0) {
1540                                 xpt_print(periph->path,
1541                                     "unsupportable block size %ju\n",
1542                                     (uintmax_t) block_size);
1543                                 announce_buf[0] = '\0';
1544                                 cam_periph_invalidate(periph);
1545                         } else {
1546                                 dasetgeom(periph, block_size, maxsector);
1547                                 dp = &softc->params;
1548                                 snprintf(announce_buf, sizeof(announce_buf),
1549                                         "%juMB (%ju %u byte sectors: %dH %dS/T "
1550                                         "%dC)", (uintmax_t)
1551                                         (((uintmax_t)dp->secsize *
1552                                         dp->sectors) / (1024*1024)),
1553                                         (uintmax_t)dp->sectors,
1554                                         dp->secsize, dp->heads,
1555                                         dp->secs_per_track, dp->cylinders);
1556                         }
1557                 } else {
1558                         int     error;
1559
1560                         announce_buf[0] = '\0';
1561
1562                         /*
1563                          * Retry any UNIT ATTENTION type errors.  They
1564                          * are expected at boot.
1565                          */
1566                         error = daerror(done_ccb, CAM_RETRY_SELTO,
1567                                         SF_RETRY_UA|SF_NO_PRINT);
1568                         if (error == ERESTART) {
1569                                 /*
1570                                  * A retry was scheuled, so
1571                                  * just return.
1572                                  */
1573                                 return;
1574                         } else if (error != 0) {
1575                                 struct scsi_sense_data *sense;
1576                                 int asc, ascq;
1577                                 int sense_key, error_code;
1578                                 int have_sense;
1579                                 cam_status status;
1580                                 struct ccb_getdev cgd;
1581
1582                                 /* Don't wedge this device's queue */
1583                                 status = done_ccb->ccb_h.status;
1584                                 if ((status & CAM_DEV_QFRZN) != 0)
1585                                         cam_release_devq(done_ccb->ccb_h.path,
1586                                                          /*relsim_flags*/0,
1587                                                          /*reduction*/0,
1588                                                          /*timeout*/0,
1589                                                          /*getcount_only*/0);
1590
1591
1592                                 xpt_setup_ccb(&cgd.ccb_h,
1593                                               done_ccb->ccb_h.path,
1594                                               /* priority */ 1);
1595                                 cgd.ccb_h.func_code = XPT_GDEV_TYPE;
1596                                 xpt_action((union ccb *)&cgd);
1597
1598                                 if (((csio->ccb_h.flags & CAM_SENSE_PHYS) != 0)
1599                                  || ((csio->ccb_h.flags & CAM_SENSE_PTR) != 0)
1600                                  || ((status & CAM_AUTOSNS_VALID) == 0))
1601                                         have_sense = FALSE;
1602                                 else
1603                                         have_sense = TRUE;
1604
1605                                 if (have_sense) {
1606                                         sense = &csio->sense_data;
1607                                         scsi_extract_sense(sense, &error_code,
1608                                                            &sense_key,
1609                                                            &asc, &ascq);
1610                                 }
1611                                 /*
1612                                  * Attach to anything that claims to be a
1613                                  * direct access or optical disk device,
1614                                  * as long as it doesn't return a "Logical
1615                                  * unit not supported" (0x25) error.
1616                                  */
1617                                 if ((have_sense) && (asc != 0x25)
1618                                  && (error_code == SSD_CURRENT_ERROR)) {
1619                                         const char *sense_key_desc;
1620                                         const char *asc_desc;
1621
1622                                         scsi_sense_desc(sense_key, asc, ascq,
1623                                                         &cgd.inq_data,
1624                                                         &sense_key_desc,
1625                                                         &asc_desc);
1626                                         snprintf(announce_buf,
1627                                             sizeof(announce_buf),
1628                                                 "Attempt to query device "
1629                                                 "size failed: %s, %s",
1630                                                 sense_key_desc,
1631                                                 asc_desc);
1632                                 } else {
1633                                         if (have_sense)
1634                                                 scsi_sense_print(
1635                                                         &done_ccb->csio);
1636                                         else {
1637                                                 xpt_print(periph->path,
1638                                                     "got CAM status %#x\n",
1639                                                     done_ccb->ccb_h.status);
1640                                         }
1641
1642                                         xpt_print(periph->path, "fatal error, "
1643                                             "failed to attach to device\n");
1644
1645                                         /*
1646                                          * Free up resources.
1647                                          */
1648                                         cam_periph_invalidate(periph);
1649                                 }
1650                         }
1651                 }
1652                 free(csio->data_ptr, M_SCSIDA);
1653                 if (announce_buf[0] != '\0') {
1654                         xpt_announce_periph(periph, announce_buf);
1655                         /*
1656                          * Create our sysctl variables, now that we know
1657                          * we have successfully attached.
1658                          */
1659                         taskqueue_enqueue(taskqueue_thread,&softc->sysctl_task);
1660                 }
1661                 softc->state = DA_STATE_NORMAL;
1662                 /*
1663                  * Since our peripheral may be invalidated by an error
1664                  * above or an external event, we must release our CCB
1665                  * before releasing the probe lock on the peripheral.
1666                  * The peripheral will only go away once the last lock
1667                  * is removed, and we need it around for the CCB release
1668                  * operation.
1669                  */
1670                 xpt_release_ccb(done_ccb);
1671                 cam_periph_unhold(periph);
1672                 return;
1673         }
1674         case DA_CCB_WAITING:
1675         {
1676                 /* Caller will release the CCB */
1677                 wakeup(&done_ccb->ccb_h.cbfcnp);
1678                 return;
1679         }
1680         case DA_CCB_DUMP:
1681                 /* No-op.  We're polling */
1682                 return;
1683         default:
1684                 break;
1685         }
1686         xpt_release_ccb(done_ccb);
1687 }
1688
1689 static int
1690 daerror(union ccb *ccb, u_int32_t cam_flags, u_int32_t sense_flags)
1691 {
1692         struct da_softc   *softc;
1693         struct cam_periph *periph;
1694         int error;
1695
1696         periph = xpt_path_periph(ccb->ccb_h.path);
1697         softc = (struct da_softc *)periph->softc;
1698
1699         /*
1700          * Automatically detect devices that do not support
1701          * READ(6)/WRITE(6) and upgrade to using 10 byte cdbs.
1702          */
1703         error = 0;
1704         if ((ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_INVALID) {
1705                 error = cmd6workaround(ccb);
1706         } else if (((ccb->ccb_h.status & CAM_STATUS_MASK) ==
1707                    CAM_SCSI_STATUS_ERROR)
1708          && (ccb->ccb_h.status & CAM_AUTOSNS_VALID)
1709          && (ccb->csio.scsi_status == SCSI_STATUS_CHECK_COND)
1710          && ((ccb->ccb_h.flags & CAM_SENSE_PHYS) == 0)
1711          && ((ccb->ccb_h.flags & CAM_SENSE_PTR) == 0)) {
1712                 int sense_key, error_code, asc, ascq;
1713
1714                 scsi_extract_sense(&ccb->csio.sense_data,
1715                                    &error_code, &sense_key, &asc, &ascq);
1716                 if (sense_key == SSD_KEY_ILLEGAL_REQUEST)
1717                         error = cmd6workaround(ccb);
1718         }
1719         if (error == ERESTART)
1720                 return (ERESTART);
1721
1722         /*
1723          * XXX
1724          * Until we have a better way of doing pack validation,
1725          * don't treat UAs as errors.
1726          */
1727         sense_flags |= SF_RETRY_UA;
1728         return(cam_periph_error(ccb, cam_flags, sense_flags,
1729                                 &softc->saved_ccb));
1730 }
1731
1732 static void
1733 daprevent(struct cam_periph *periph, int action)
1734 {
1735         struct  da_softc *softc;
1736         union   ccb *ccb;
1737         int     error;
1738
1739         softc = (struct da_softc *)periph->softc;
1740
1741         if (((action == PR_ALLOW)
1742           && (softc->flags & DA_FLAG_PACK_LOCKED) == 0)
1743          || ((action == PR_PREVENT)
1744           && (softc->flags & DA_FLAG_PACK_LOCKED) != 0)) {
1745                 return;
1746         }
1747
1748         ccb = cam_periph_getccb(periph, /*priority*/1);
1749
1750         scsi_prevent(&ccb->csio,
1751                      /*retries*/1,
1752                      /*cbcfp*/dadone,
1753                      MSG_SIMPLE_Q_TAG,
1754                      action,
1755                      SSD_FULL_SIZE,
1756                      5000);
1757
1758         error = cam_periph_runccb(ccb, /*error_routine*/NULL, CAM_RETRY_SELTO,
1759                                   SF_RETRY_UA, softc->disk->d_devstat);
1760
1761         if (error == 0) {
1762                 if (action == PR_ALLOW)
1763                         softc->flags &= ~DA_FLAG_PACK_LOCKED;
1764                 else
1765                         softc->flags |= DA_FLAG_PACK_LOCKED;
1766         }
1767
1768         xpt_release_ccb(ccb);
1769 }
1770
1771 static int
1772 dagetcapacity(struct cam_periph *periph)
1773 {
1774         struct da_softc *softc;
1775         union ccb *ccb;
1776         struct scsi_read_capacity_data *rcap;
1777         struct scsi_read_capacity_data_long *rcaplong;
1778         uint32_t block_len;
1779         uint64_t maxsector;
1780         int error;
1781         u_int32_t sense_flags;
1782
1783         softc = (struct da_softc *)periph->softc;
1784         block_len = 0;
1785         maxsector = 0;
1786         error = 0;
1787         sense_flags = SF_RETRY_UA;
1788         if (softc->flags & DA_FLAG_PACK_REMOVABLE)
1789                 sense_flags |= SF_NO_PRINT;
1790
1791         /* Do a read capacity */
1792         rcap = (struct scsi_read_capacity_data *)malloc(sizeof(*rcaplong),
1793                                                         M_SCSIDA,
1794                                                         M_NOWAIT);
1795         if (rcap == NULL)
1796                 return (ENOMEM);
1797
1798         ccb = cam_periph_getccb(periph, /*priority*/1);
1799         scsi_read_capacity(&ccb->csio,
1800                            /*retries*/4,
1801                            /*cbfncp*/dadone,
1802                            MSG_SIMPLE_Q_TAG,
1803                            rcap,
1804                            SSD_FULL_SIZE,
1805                            /*timeout*/60000);
1806         ccb->ccb_h.ccb_bp = NULL;
1807
1808         error = cam_periph_runccb(ccb, daerror,
1809                                   /*cam_flags*/CAM_RETRY_SELTO,
1810                                   sense_flags,
1811                                   softc->disk->d_devstat);
1812
1813         if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
1814                 cam_release_devq(ccb->ccb_h.path,
1815                                  /*relsim_flags*/0,
1816                                  /*reduction*/0,
1817                                  /*timeout*/0,
1818                                  /*getcount_only*/0);
1819
1820         if (error == 0) {
1821                 block_len = scsi_4btoul(rcap->length);
1822                 maxsector = scsi_4btoul(rcap->addr);
1823
1824                 if (maxsector != 0xffffffff)
1825                         goto done;
1826         } else
1827                 goto done;
1828
1829         rcaplong = (struct scsi_read_capacity_data_long *)rcap;
1830
1831         scsi_read_capacity_16(&ccb->csio,
1832                               /*retries*/ 4,
1833                               /*cbfcnp*/ dadone,
1834                               /*tag_action*/ MSG_SIMPLE_Q_TAG,
1835                               /*lba*/ 0,
1836                               /*reladr*/ 0,
1837                               /*pmi*/ 0,
1838                               rcaplong,
1839                               /*sense_len*/ SSD_FULL_SIZE,
1840                               /*timeout*/ 60000);
1841         ccb->ccb_h.ccb_bp = NULL;
1842
1843         error = cam_periph_runccb(ccb, daerror,
1844                                   /*cam_flags*/CAM_RETRY_SELTO,
1845                                   sense_flags,
1846                                   softc->disk->d_devstat);
1847
1848         if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
1849                 cam_release_devq(ccb->ccb_h.path,
1850                                  /*relsim_flags*/0,
1851                                  /*reduction*/0,
1852                                  /*timeout*/0,
1853                                  /*getcount_only*/0);
1854
1855         if (error == 0) {
1856                 block_len = scsi_4btoul(rcaplong->length);
1857                 maxsector = scsi_8btou64(rcaplong->addr);
1858         }
1859
1860 done:
1861
1862         if (error == 0)
1863                 dasetgeom(periph, block_len, maxsector);
1864
1865         xpt_release_ccb(ccb);
1866
1867         free(rcap, M_SCSIDA);
1868
1869         return (error);
1870 }
1871
1872 static void
1873 dasetgeom(struct cam_periph *periph, uint32_t block_len, uint64_t maxsector)
1874 {
1875         struct ccb_calc_geometry ccg;
1876         struct da_softc *softc;
1877         struct disk_params *dp;
1878
1879         softc = (struct da_softc *)periph->softc;
1880
1881         dp = &softc->params;
1882         dp->secsize = block_len;
1883         dp->sectors = maxsector + 1;
1884         /*
1885          * Have the controller provide us with a geometry
1886          * for this disk.  The only time the geometry
1887          * matters is when we boot and the controller
1888          * is the only one knowledgeable enough to come
1889          * up with something that will make this a bootable
1890          * device.
1891          */
1892         xpt_setup_ccb(&ccg.ccb_h, periph->path, /*priority*/1);
1893         ccg.ccb_h.func_code = XPT_CALC_GEOMETRY;
1894         ccg.block_size = dp->secsize;
1895         ccg.volume_size = dp->sectors;
1896         ccg.heads = 0;
1897         ccg.secs_per_track = 0;
1898         ccg.cylinders = 0;
1899         xpt_action((union ccb*)&ccg);
1900         if ((ccg.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1901                 /*
1902                  * We don't know what went wrong here- but just pick
1903                  * a geometry so we don't have nasty things like divide
1904                  * by zero.
1905                  */
1906                 dp->heads = 255;
1907                 dp->secs_per_track = 255;
1908                 dp->cylinders = dp->sectors / (255 * 255);
1909                 if (dp->cylinders == 0) {
1910                         dp->cylinders = 1;
1911                 }
1912         } else {
1913                 dp->heads = ccg.heads;
1914                 dp->secs_per_track = ccg.secs_per_track;
1915                 dp->cylinders = ccg.cylinders;
1916         }
1917 }
1918
1919 static void
1920 dasendorderedtag(void *arg)
1921 {
1922         struct da_softc *softc = arg;
1923
1924         if (da_send_ordered) {
1925                 if ((softc->ordered_tag_count == 0)
1926                  && ((softc->flags & DA_FLAG_WENT_IDLE) == 0)) {
1927                         softc->flags |= DA_FLAG_NEED_OTAG;
1928                 }
1929                 if (softc->outstanding_cmds > 0)
1930                         softc->flags &= ~DA_FLAG_WENT_IDLE;
1931
1932                 softc->ordered_tag_count = 0;
1933         }
1934         /* Queue us up again */
1935         callout_reset(&softc->sendordered_c,
1936             (DA_DEFAULT_TIMEOUT * hz) / DA_ORDEREDTAG_INTERVAL,
1937             dasendorderedtag, softc);
1938 }
1939
1940 /*
1941  * Step through all DA peripheral drivers, and if the device is still open,
1942  * sync the disk cache to physical media.
1943  */
1944 static void
1945 dashutdown(void * arg, int howto)
1946 {
1947         struct cam_periph *periph;
1948         struct da_softc *softc;
1949
1950         TAILQ_FOREACH(periph, &dadriver.units, unit_links) {
1951                 union ccb ccb;
1952
1953                 cam_periph_lock(periph);
1954                 softc = (struct da_softc *)periph->softc;
1955
1956                 /*
1957                  * We only sync the cache if the drive is still open, and
1958                  * if the drive is capable of it..
1959                  */
1960                 if (((softc->flags & DA_FLAG_OPEN) == 0)
1961                  || (softc->quirks & DA_Q_NO_SYNC_CACHE)) {
1962                         cam_periph_unlock(periph);
1963                         continue;
1964                 }
1965
1966                 xpt_setup_ccb(&ccb.ccb_h, periph->path, /*priority*/1);
1967
1968                 ccb.ccb_h.ccb_state = DA_CCB_DUMP;
1969                 scsi_synchronize_cache(&ccb.csio,
1970                                        /*retries*/1,
1971                                        /*cbfcnp*/dadone,
1972                                        MSG_SIMPLE_Q_TAG,
1973                                        /*begin_lba*/0, /* whole disk */
1974                                        /*lb_count*/0,
1975                                        SSD_FULL_SIZE,
1976                                        60 * 60 * 1000);
1977
1978                 xpt_polled_action(&ccb);
1979
1980                 if ((ccb.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1981                         if (((ccb.ccb_h.status & CAM_STATUS_MASK) ==
1982                              CAM_SCSI_STATUS_ERROR)
1983                          && (ccb.csio.scsi_status == SCSI_STATUS_CHECK_COND)){
1984                                 int error_code, sense_key, asc, ascq;
1985
1986                                 scsi_extract_sense(&ccb.csio.sense_data,
1987                                                    &error_code, &sense_key,
1988                                                    &asc, &ascq);
1989
1990                                 if (sense_key != SSD_KEY_ILLEGAL_REQUEST)
1991                                         scsi_sense_print(&ccb.csio);
1992                         } else {
1993                                 xpt_print(periph->path, "Synchronize "
1994                                     "cache failed, status == 0x%x, scsi status "
1995                                     "== 0x%x\n", ccb.ccb_h.status,
1996                                     ccb.csio.scsi_status);
1997                         }
1998                 }
1999
2000                 if ((ccb.ccb_h.status & CAM_DEV_QFRZN) != 0)
2001                         cam_release_devq(ccb.ccb_h.path,
2002                                          /*relsim_flags*/0,
2003                                          /*reduction*/0,
2004                                          /*timeout*/0,
2005                                          /*getcount_only*/0);
2006                 cam_periph_unlock(periph);
2007         }
2008 }
2009
2010 #else /* !_KERNEL */
2011
2012 /*
2013  * XXX This is only left out of the kernel build to silence warnings.  If,
2014  * for some reason this function is used in the kernel, the ifdefs should
2015  * be moved so it is included both in the kernel and userland.
2016  */
2017 void
2018 scsi_format_unit(struct ccb_scsiio *csio, u_int32_t retries,
2019                  void (*cbfcnp)(struct cam_periph *, union ccb *),
2020                  u_int8_t tag_action, u_int8_t byte2, u_int16_t ileave,
2021                  u_int8_t *data_ptr, u_int32_t dxfer_len, u_int8_t sense_len,
2022                  u_int32_t timeout)
2023 {
2024         struct scsi_format_unit *scsi_cmd;
2025
2026         scsi_cmd = (struct scsi_format_unit *)&csio->cdb_io.cdb_bytes;
2027         scsi_cmd->opcode = FORMAT_UNIT;
2028         scsi_cmd->byte2 = byte2;
2029         scsi_ulto2b(ileave, scsi_cmd->interleave);
2030
2031         cam_fill_csio(csio,
2032                       retries,
2033                       cbfcnp,
2034                       /*flags*/ (dxfer_len > 0) ? CAM_DIR_OUT : CAM_DIR_NONE,
2035                       tag_action,
2036                       data_ptr,
2037                       dxfer_len,
2038                       sense_len,
2039                       sizeof(*scsi_cmd),
2040                       timeout);
2041 }
2042
2043 #endif /* _KERNEL */