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                  * iRiver U10 MP3 player
 461                  * PR: usb/92306
 462                  */
 463                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "iriver", "U10*",
 464                 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 465         },
 466         {
 467                 /*
 468                  * X-Micro Flash Disk
 469                  * PR: usb/96901
 470                  */
 471                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "X-Micro", "Flash Disk",
 472                 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 473         },
 474         {
 475                 /*
 476                  * EasyMP3 EM732X USB 2.0 Flash MP3 Player
 477                  * PR: usb/96546
 478                  */
 479                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "EM732X", "MP3 Player*",
 480                 "1.00"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 481         },
 482         {
 483                 /*
 484                  * Denver MP3 player
 485                  * PR: usb/107101
 486                  */
 487                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "DENVER", "MP3 PLAYER",
 488                  "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 489         },
 490         {
 491                 /*
 492                  * Philips USB Key Audio KEY013
 493                  * PR: usb/68412
 494                  */
 495                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "PHILIPS", "Key*", "*"},
 496                 /*quirks*/ DA_Q_NO_SYNC_CACHE | DA_Q_NO_PREVENT
 497         },
 498         {
 499                 /*
 500                  * JNC MP3 Player
 501                  * PR: usb/94439
 502                  */
 503                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "JNC*" , "MP3 Player*",
 504                  "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 505         },
 506         {
 507                 /*
 508                  * SAMSUNG MP0402H
 509                  * PR: usb/108427
 510                  */
 511                 {T_DIRECT, SIP_MEDIA_FIXED, "SAMSUNG", "MP0402H", "*"},
 512                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 513         },
 514         {
 515                 /*
 516                  * I/O Magic USB flash - Giga Bank
 517                  * PR: usb/108810
 518                  */
 519                 {T_DIRECT, SIP_MEDIA_FIXED, "GS-Magic", "stor*", "*"},
 520                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 521         },
 522         {
 523                 /*
 524                  * JoyFly 128mb USB Flash Drive
 525                  * PR: 96133
 526                  */
 527                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "USB 2.0", "Flash Disk*",
 528                  "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 529         },
 530         {
 531                 /*
 532                  * ChipsBnk usb stick
 533                  * PR: 103702
 534                  */
 535                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "ChipsBnk", "USB*",
 536                  "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 537         },
 538         {
 539                 /*
 540                  * Storcase (Kingston) InfoStation IFS FC2/SATA-R 201A
 541                  * PR: 129858
 542                  */
 543                 {T_DIRECT, SIP_MEDIA_FIXED, "IFS", "FC2/SATA-R*",
 544                  "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 545         },
 546         {
 547                 /*
 548                  * Samsung YP-U3 mp3-player
 549                  * PR: 125398
 550                  */
 551                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Samsung", "YP-U3",
 552                  "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 553         },
 554         {
 555                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Netac", "OnlyDisk*",
 556                  "2000"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 557         },
 558         {
 559                 /*
 560                  * Sony Cyber-Shot DSC cameras
 561                  * PR: usb/137035
 562                  */
 563                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Sony", "Sony DSC", "*"},
 564                 /*quirks*/ DA_Q_NO_SYNC_CACHE | DA_Q_NO_PREVENT
 565         }
 566 };
 567
 568 static  disk_strategy_t dastrategy;
 569 static  dumper_t        dadump;
 570 static  periph_init_t   dainit;
 571 static  void            daasync(void *callback_arg, u_int32_t code,
 572                                 struct cam_path *path, void *arg);
 573 static  void            dasysctlinit(void *context, int pending);
 574 static  int             dacmdsizesysctl(SYSCTL_HANDLER_ARGS);
 575 static  periph_ctor_t   daregister;
 576 static  periph_dtor_t   dacleanup;
 577 static  periph_start_t  dastart;
 578 static  periph_oninv_t  daoninvalidate;
 579 static  void            dadone(struct cam_periph *periph,
 580                                union ccb *done_ccb);
 581 static  int             daerror(union ccb *ccb, u_int32_t cam_flags,
 582                                 u_int32_t sense_flags);
 583 static void             daprevent(struct cam_periph *periph, int action);
 584 static int              dagetcapacity(struct cam_periph *periph);
 585 static void             dasetgeom(struct cam_periph *periph, uint32_t block_len,
 586                                   uint64_t maxsector);
 587 static timeout_t        dasendorderedtag;
 588 static void             dashutdown(void *arg, int howto);
 589
 590 #ifndef DA_DEFAULT_TIMEOUT
 591 #define DA_DEFAULT_TIMEOUT 60   /* Timeout in seconds */
 592 #endif
 593
 594 #ifndef DA_DEFAULT_RETRY
 595 #define DA_DEFAULT_RETRY        4
 596 #endif
 597
 598 #ifndef DA_DEFAULT_SEND_ORDERED
 599 #define DA_DEFAULT_SEND_ORDERED 1
 600 #endif
 601
 602
 603 static int da_retry_count = DA_DEFAULT_RETRY;
 604 static int da_default_timeout = DA_DEFAULT_TIMEOUT;
 605 static int da_send_ordered = DA_DEFAULT_SEND_ORDERED;
 606
 607 SYSCTL_NODE(_kern_cam, OID_AUTO, da, CTLFLAG_RD, 0,
 608             "CAM Direct Access Disk driver");
 609 SYSCTL_INT(_kern_cam_da, OID_AUTO, retry_count, CTLFLAG_RW,
 610            &da_retry_count, 0, "Normal I/O retry count");
 611 TUNABLE_INT("kern.cam.da.retry_count", &da_retry_count);
 612 SYSCTL_INT(_kern_cam_da, OID_AUTO, default_timeout, CTLFLAG_RW,
 613            &da_default_timeout, 0, "Normal I/O timeout (in seconds)");
 614 TUNABLE_INT("kern.cam.da.default_timeout", &da_default_timeout);
 615 SYSCTL_INT(_kern_cam_da, OID_AUTO, da_send_ordered, CTLFLAG_RW,
 616            &da_send_ordered, 0, "Send Ordered Tags");
 617 TUNABLE_INT("kern.cam.da.da_send_ordered", &da_send_ordered);
 618
 619 /*
 620  * DA_ORDEREDTAG_INTERVAL determines how often, relative
 621  * to the default timeout, we check to see whether an ordered
 622  * tagged transaction is appropriate to prevent simple tag
 623  * starvation.  Since we'd like to ensure that there is at least
 624  * 1/2 of the timeout length left for a starved transaction to
 625  * complete after we've sent an ordered tag, we must poll at least
 626  * four times in every timeout period.  This takes care of the worst
 627  * case where a starved transaction starts during an interval that
 628  * meets the requirement "don't send an ordered tag" test so it takes
 629  * us two intervals to determine that a tag must be sent.
 630  */
 631 #ifndef DA_ORDEREDTAG_INTERVAL
 632 #define DA_ORDEREDTAG_INTERVAL 4
 633 #endif
 634
 635 static struct periph_driver dadriver =
 636 {
 637         dainit, "da",
 638         TAILQ_HEAD_INITIALIZER(dadriver.units), /* generation */ 0
 639 };
 640
 641 PERIPHDRIVER_DECLARE(da, dadriver);
 642
 643 MALLOC_DEFINE(M_SCSIDA, "scsi_da", "scsi_da buffers");
 644
 645 static int
 646 daopen(struct disk *dp)
 647 {
 648         struct cam_periph *periph;
 649         struct da_softc *softc;
 650         int unit;
 651         int error;
 652
 653         periph = (struct cam_periph *)dp->d_drv1;
 654         if (periph == NULL) {
 655                 return (ENXIO);
 656         }
 657
 658         if (cam_periph_acquire(periph) != CAM_REQ_CMP) {
 659                 return(ENXIO);
 660         }
 661
 662         cam_periph_lock(periph);
 663         if ((error = cam_periph_hold(periph, PRIBIO|PCATCH)) != 0) {
 664                 cam_periph_unlock(periph);
 665                 cam_periph_release(periph);
 666                 return (error);
 667         }
 668
 669         unit = periph->unit_number;
 670         softc = (struct da_softc *)periph->softc;
 671         softc->flags |= DA_FLAG_OPEN;
 672
 673         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE,
 674             ("daopen: disk=%s%d (unit %d)\n", dp->d_name, dp->d_unit,
 675              unit));
 676
 677         if ((softc->flags & DA_FLAG_PACK_INVALID) != 0) {
 678                 /* Invalidate our pack information. */
 679                 softc->flags &= ~DA_FLAG_PACK_INVALID;
 680         }
 681
 682         error = dagetcapacity(periph);
 683
 684         if (error == 0) {
 685
 686                 softc->disk->d_sectorsize = softc->params.secsize;
 687                 softc->disk->d_mediasize = softc->params.secsize * (off_t)softc->params.sectors;
 688                 /* XXX: these are not actually "firmware" values, so they may be wrong */
 689                 softc->disk->d_fwsectors = softc->params.secs_per_track;
 690                 softc->disk->d_fwheads = softc->params.heads;
 691                 softc->disk->d_devstat->block_size = softc->params.secsize;
 692                 softc->disk->d_devstat->flags &= ~DEVSTAT_BS_UNAVAILABLE;
 693
 694                 if ((softc->flags & DA_FLAG_PACK_REMOVABLE) != 0 &&
 695                     (softc->quirks & DA_Q_NO_PREVENT) == 0)
 696                         daprevent(periph, PR_PREVENT);
 697         } else
 698                 softc->flags &= ~DA_FLAG_OPEN;
 699
 700         cam_periph_unhold(periph);
 701         cam_periph_unlock(periph);
 702
 703         if (error != 0) {
 704                 cam_periph_release(periph);
 705         }
 706         return (error);
 707 }
 708
 709 static int
 710 daclose(struct disk *dp)
 711 {
 712         struct  cam_periph *periph;
 713         struct  da_softc *softc;
 714         int error;
 715
 716         periph = (struct cam_periph *)dp->d_drv1;
 717         if (periph == NULL)
 718                 return (ENXIO);
 719
 720         cam_periph_lock(periph);
 721         if ((error = cam_periph_hold(periph, PRIBIO)) != 0) {
 722                 cam_periph_unlock(periph);
 723                 cam_periph_release(periph);
 724                 return (error);
 725         }
 726
 727         softc = (struct da_softc *)periph->softc;
 728
 729         if ((softc->quirks & DA_Q_NO_SYNC_CACHE) == 0) {
 730                 union   ccb *ccb;
 731
 732                 ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL);
 733
 734                 scsi_synchronize_cache(&ccb->csio,
 735                                        /*retries*/1,
 736                                        /*cbfcnp*/dadone,
 737                                        MSG_SIMPLE_Q_TAG,
 738                                        /*begin_lba*/0,/* Cover the whole disk */
 739                                        /*lb_count*/0,
 740                                        SSD_FULL_SIZE,
 741                                        5 * 60 * 1000);
 742
 743                 cam_periph_runccb(ccb, /*error_routine*/NULL, /*cam_flags*/0,
 744                                   /*sense_flags*/SF_RETRY_UA,
 745                                   softc->disk->d_devstat);
 746
 747                 if ((ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
 748                         if ((ccb->ccb_h.status & CAM_STATUS_MASK) ==
 749                              CAM_SCSI_STATUS_ERROR) {
 750                                 int asc, ascq;
 751                                 int sense_key, error_code;
 752
 753                                 scsi_extract_sense(&ccb->csio.sense_data,
 754                                                    &error_code,
 755                                                    &sense_key,
 756                                                    &asc, &ascq);
 757                                 if (sense_key != SSD_KEY_ILLEGAL_REQUEST)
 758                                         scsi_sense_print(&ccb->csio);
 759                         } else {
 760                                 xpt_print(periph->path, "Synchronize cache "
 761                                     "failed, status == 0x%x, scsi status == "
 762                                     "0x%x\n", ccb->csio.ccb_h.status,
 763                                     ccb->csio.scsi_status);
 764                         }
 765                 }
 766
 767                 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
 768                         cam_release_devq(ccb->ccb_h.path,
 769                                          /*relsim_flags*/0,
 770                                          /*reduction*/0,
 771                                          /*timeout*/0,
 772                                          /*getcount_only*/0);
 773
 774                 xpt_release_ccb(ccb);
 775
 776         }
 777
 778         if ((softc->flags & DA_FLAG_PACK_REMOVABLE) != 0) {
 779                 if ((softc->quirks & DA_Q_NO_PREVENT) == 0)
 780                         daprevent(periph, PR_ALLOW);
 781                 /*
 782                  * If we've got removeable media, mark the blocksize as
 783                  * unavailable, since it could change when new media is
 784                  * inserted.
 785                  */
 786                 softc->disk->d_devstat->flags |= DEVSTAT_BS_UNAVAILABLE;
 787         }
 788
 789         softc->flags &= ~DA_FLAG_OPEN;
 790         cam_periph_unhold(periph);
 791         cam_periph_unlock(periph);
 792         cam_periph_release(periph);
 793         return (0);
 794 }
 795
 796 /*
 797  * Actually translate the requested transfer into one the physical driver
 798  * can understand.  The transfer is described by a buf and will include
 799  * only one physical transfer.
 800  */
 801 static void
 802 dastrategy(struct bio *bp)
 803 {
 804         struct cam_periph *periph;
 805         struct da_softc *softc;
 806
 807         periph = (struct cam_periph *)bp->bio_disk->d_drv1;
 808         if (periph == NULL) {
 809                 biofinish(bp, NULL, ENXIO);
 810                 return;
 811         }
 812         softc = (struct da_softc *)periph->softc;
 813
 814         cam_periph_lock(periph);
 815
 816         /*
 817          * If the device has been made invalid, error out
 818          */
 819         if ((softc->flags & DA_FLAG_PACK_INVALID)) {
 820                 cam_periph_unlock(periph);
 821                 biofinish(bp, NULL, ENXIO);
 822                 return;
 823         }
 824
 825         /*
 826          * Place it in the queue of disk activities for this disk
 827          */
 828         bioq_disksort(&softc->bio_queue, bp);
 829
 830         /*
 831          * Schedule ourselves for performing the work.
 832          */
 833         xpt_schedule(periph, CAM_PRIORITY_NORMAL);
 834         cam_periph_unlock(periph);
 835
 836         return;
 837 }
 838
 839 static int
 840 dadump(void *arg, void *virtual, vm_offset_t physical, off_t offset, size_t length)
 841 {
 842         struct      cam_periph *periph;
 843         struct      da_softc *softc;
 844         u_int       secsize;
 845         struct      ccb_scsiio csio;
 846         struct      disk *dp;
 847
 848         dp = arg;
 849         periph = dp->d_drv1;
 850         if (periph == NULL)
 851                 return (ENXIO);
 852         softc = (struct da_softc *)periph->softc;
 853         cam_periph_lock(periph);
 854         secsize = softc->params.secsize;
 855
 856         if ((softc->flags & DA_FLAG_PACK_INVALID) != 0) {
 857                 cam_periph_unlock(periph);
 858                 return (ENXIO);
 859         }
 860
 861         if (length > 0) {
 862                 xpt_setup_ccb(&csio.ccb_h, periph->path, CAM_PRIORITY_NORMAL);
 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                                 offset / secsize,
 872                                 length / secsize,
 873                                 /*data_ptr*/(u_int8_t *) virtual,
 874                                 /*dxfer_len*/length,
 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                 cam_periph_unlock(periph);
 890                 return(0);
 891         }
 892
 893         /*
 894          * Sync the disk cache contents to the physical media.
 895          */
 896         if ((softc->quirks & DA_Q_NO_SYNC_CACHE) == 0) {
 897
 898                 xpt_setup_ccb(&csio.ccb_h, periph->path, CAM_PRIORITY_NORMAL);
 899                 csio.ccb_h.ccb_state = DA_CCB_DUMP;
 900                 scsi_synchronize_cache(&csio,
 901                                        /*retries*/1,
 902                                        /*cbfcnp*/dadone,
 903                                        MSG_SIMPLE_Q_TAG,
 904                                        /*begin_lba*/0,/* Cover the whole disk */
 905                                        /*lb_count*/0,
 906                                        SSD_FULL_SIZE,
 907                                        5 * 60 * 1000);
 908                 xpt_polled_action((union ccb *)&csio);
 909
 910                 if ((csio.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
 911                         if ((csio.ccb_h.status & CAM_STATUS_MASK) ==
 912                              CAM_SCSI_STATUS_ERROR) {
 913                                 int asc, ascq;
 914                                 int sense_key, error_code;
 915
 916                                 scsi_extract_sense(&csio.sense_data,
 917                                                    &error_code,
 918                                                    &sense_key,
 919                                                    &asc, &ascq);
 920                                 if (sense_key != SSD_KEY_ILLEGAL_REQUEST)
 921                                         scsi_sense_print(&csio);
 922                         } else {
 923                                 xpt_print(periph->path, "Synchronize cache "
 924                                     "failed, status == 0x%x, scsi status == "
 925                                     "0x%x\n", csio.ccb_h.status,
 926                                     csio.scsi_status);
 927                         }
 928                 }
 929         }
 930         cam_periph_unlock(periph);
 931         return (0);
 932 }
 933
 934 static void
 935 dainit(void)
 936 {
 937         cam_status status;
 938
 939         /*
 940          * Install a global async callback.  This callback will
 941          * receive async callbacks like "new device found".
 942          */
 943         status = xpt_register_async(AC_FOUND_DEVICE, daasync, NULL, NULL);
 944
 945         if (status != CAM_REQ_CMP) {
 946                 printf("da: Failed to attach master async callback "
 947                        "due to status 0x%x!\n", status);
 948         } else if (da_send_ordered) {
 949
 950                 /* Register our shutdown event handler */
 951                 if ((EVENTHANDLER_REGISTER(shutdown_post_sync, dashutdown,
 952                                            NULL, SHUTDOWN_PRI_DEFAULT)) == NULL)
 953                     printf("dainit: shutdown event registration failed!\n");
 954         }
 955 }
 956
 957 static void
 958 daoninvalidate(struct cam_periph *periph)
 959 {
 960         struct da_softc *softc;
 961
 962         softc = (struct da_softc *)periph->softc;
 963
 964         /*
 965          * De-register any async callbacks.
 966          */
 967         xpt_register_async(0, daasync, periph, periph->path);
 968
 969         softc->flags |= DA_FLAG_PACK_INVALID;
 970
 971         /*
 972          * Return all queued I/O with ENXIO.
 973          * XXX Handle any transactions queued to the card
 974          *     with XPT_ABORT_CCB.
 975          */
 976         bioq_flush(&softc->bio_queue, NULL, ENXIO);
 977
 978         disk_gone(softc->disk);
 979         xpt_print(periph->path, "lost device\n");
 980 }
 981
 982 static void
 983 dacleanup(struct cam_periph *periph)
 984 {
 985         struct da_softc *softc;
 986
 987         softc = (struct da_softc *)periph->softc;
 988
 989         xpt_print(periph->path, "removing device entry\n");
 990         cam_periph_unlock(periph);
 991
 992         /*
 993          * If we can't free the sysctl tree, oh well...
 994          */
 995         if ((softc->flags & DA_FLAG_SCTX_INIT) != 0
 996             && sysctl_ctx_free(&softc->sysctl_ctx) != 0) {
 997                 xpt_print(periph->path, "can't remove sysctl context\n");
 998         }
 999
1000         disk_destroy(softc->disk);
1001         callout_drain(&softc->sendordered_c);
1002         free(softc, M_DEVBUF);
1003         cam_periph_lock(periph);
1004 }
1005
1006 static void
1007 daasync(void *callback_arg, u_int32_t code,
1008         struct cam_path *path, void *arg)
1009 {
1010         struct cam_periph *periph;
1011
1012         periph = (struct cam_periph *)callback_arg;
1013         switch (code) {
1014         case AC_FOUND_DEVICE:
1015         {
1016                 struct ccb_getdev *cgd;
1017                 cam_status status;
1018
1019                 cgd = (struct ccb_getdev *)arg;
1020                 if (cgd == NULL)
1021                         break;
1022
1023                 if (cgd->protocol != PROTO_SCSI)
1024                         break;
1025
1026                 if (SID_TYPE(&cgd->inq_data) != T_DIRECT
1027                     && SID_TYPE(&cgd->inq_data) != T_RBC
1028                     && SID_TYPE(&cgd->inq_data) != T_OPTICAL)
1029                         break;
1030
1031                 /*
1032                  * Allocate a peripheral instance for
1033                  * this device and start the probe
1034                  * process.
1035                  */
1036                 status = cam_periph_alloc(daregister, daoninvalidate,
1037                                           dacleanup, dastart,
1038                                           "da", CAM_PERIPH_BIO,
1039                                           cgd->ccb_h.path, daasync,
1040                                           AC_FOUND_DEVICE, cgd);
1041
1042                 if (status != CAM_REQ_CMP
1043                  && status != CAM_REQ_INPROG)
1044                         printf("daasync: Unable to attach to new device "
1045                                 "due to status 0x%x\n", status);
1046                 break;
1047         }
1048         case AC_SENT_BDR:
1049         case AC_BUS_RESET:
1050         {
1051                 struct da_softc *softc;
1052                 struct ccb_hdr *ccbh;
1053
1054                 softc = (struct da_softc *)periph->softc;
1055                 /*
1056                  * Don't fail on the expected unit attention
1057                  * that will occur.
1058                  */
1059                 softc->flags |= DA_FLAG_RETRY_UA;
1060                 LIST_FOREACH(ccbh, &softc->pending_ccbs, periph_links.le)
1061                         ccbh->ccb_state |= DA_CCB_RETRY_UA;
1062                 /* FALLTHROUGH*/
1063         }
1064         default:
1065                 cam_periph_async(periph, code, path, arg);
1066                 break;
1067         }
1068 }
1069
1070 static void
1071 dasysctlinit(void *context, int pending)
1072 {
1073         struct cam_periph *periph;
1074         struct da_softc *softc;
1075         char tmpstr[80], tmpstr2[80];
1076
1077         periph = (struct cam_periph *)context;
1078         if (cam_periph_acquire(periph) != CAM_REQ_CMP)
1079                 return;
1080
1081         softc = (struct da_softc *)periph->softc;
1082         snprintf(tmpstr, sizeof(tmpstr), "CAM DA unit %d", periph->unit_number);
1083         snprintf(tmpstr2, sizeof(tmpstr2), "%d", periph->unit_number);
1084
1085         sysctl_ctx_init(&softc->sysctl_ctx);
1086         softc->flags |= DA_FLAG_SCTX_INIT;
1087         softc->sysctl_tree = SYSCTL_ADD_NODE(&softc->sysctl_ctx,
1088                 SYSCTL_STATIC_CHILDREN(_kern_cam_da), OID_AUTO, tmpstr2,
1089                 CTLFLAG_RD, 0, tmpstr);
1090         if (softc->sysctl_tree == NULL) {
1091                 printf("dasysctlinit: unable to allocate sysctl tree\n");
1092                 cam_periph_release(periph);
1093                 return;
1094         }
1095
1096         /*
1097          * Now register the sysctl handler, so the user can the value on
1098          * the fly.
1099          */
1100         SYSCTL_ADD_PROC(&softc->sysctl_ctx,SYSCTL_CHILDREN(softc->sysctl_tree),
1101                 OID_AUTO, "minimum_cmd_size", CTLTYPE_INT | CTLFLAG_RW,
1102                 &softc->minimum_cmd_size, 0, dacmdsizesysctl, "I",
1103                 "Minimum CDB size");
1104
1105         cam_periph_release(periph);
1106 }
1107
1108 static int
1109 dacmdsizesysctl(SYSCTL_HANDLER_ARGS)
1110 {
1111         int error, value;
1112
1113         value = *(int *)arg1;
1114
1115         error = sysctl_handle_int(oidp, &value, 0, req);
1116
1117         if ((error != 0)
1118          || (req->newptr == NULL))
1119                 return (error);
1120
1121         /*
1122          * Acceptable values here are 6, 10, 12 or 16.
1123          */
1124         if (value < 6)
1125                 value = 6;
1126         else if ((value > 6)
1127               && (value <= 10))
1128                 value = 10;
1129         else if ((value > 10)
1130               && (value <= 12))
1131                 value = 12;
1132         else if (value > 12)
1133                 value = 16;
1134
1135         *(int *)arg1 = value;
1136
1137         return (0);
1138 }
1139
1140 static cam_status
1141 daregister(struct cam_periph *periph, void *arg)
1142 {
1143         struct da_softc *softc;
1144         struct ccb_pathinq cpi;
1145         struct ccb_getdev *cgd;
1146         char tmpstr[80];
1147         caddr_t match;
1148
1149         cgd = (struct ccb_getdev *)arg;
1150         if (periph == NULL) {
1151                 printf("daregister: periph was NULL!!\n");
1152                 return(CAM_REQ_CMP_ERR);
1153         }
1154
1155         if (cgd == NULL) {
1156                 printf("daregister: no getdev CCB, can't register device\n");
1157                 return(CAM_REQ_CMP_ERR);
1158         }
1159
1160         softc = (struct da_softc *)malloc(sizeof(*softc), M_DEVBUF,
1161             M_NOWAIT|M_ZERO);
1162
1163         if (softc == NULL) {
1164                 printf("daregister: Unable to probe new device. "
1165                        "Unable to allocate softc\n");
1166                 return(CAM_REQ_CMP_ERR);
1167         }
1168
1169         LIST_INIT(&softc->pending_ccbs);
1170         softc->state = DA_STATE_PROBE;
1171         bioq_init(&softc->bio_queue);
1172         if (SID_IS_REMOVABLE(&cgd->inq_data))
1173                 softc->flags |= DA_FLAG_PACK_REMOVABLE;
1174         if ((cgd->inq_data.flags & SID_CmdQue) != 0)
1175                 softc->flags |= DA_FLAG_TAGGED_QUEUING;
1176
1177         periph->softc = softc;
1178
1179         /*
1180          * See if this device has any quirks.
1181          */
1182         match = cam_quirkmatch((caddr_t)&cgd->inq_data,
1183                                (caddr_t)da_quirk_table,
1184                                sizeof(da_quirk_table)/sizeof(*da_quirk_table),
1185                                sizeof(*da_quirk_table), scsi_inquiry_match);
1186
1187         if (match != NULL)
1188                 softc->quirks = ((struct da_quirk_entry *)match)->quirks;
1189         else
1190                 softc->quirks = DA_Q_NONE;
1191
1192         /* Check if the SIM does not want 6 byte commands */
1193         bzero(&cpi, sizeof(cpi));
1194         xpt_setup_ccb(&cpi.ccb_h, periph->path, CAM_PRIORITY_NORMAL);
1195         cpi.ccb_h.func_code = XPT_PATH_INQ;
1196         xpt_action((union ccb *)&cpi);
1197         if (cpi.ccb_h.status == CAM_REQ_CMP && (cpi.hba_misc & PIM_NO_6_BYTE))
1198                 softc->quirks |= DA_Q_NO_6_BYTE;
1199
1200         TASK_INIT(&softc->sysctl_task, 0, dasysctlinit, periph);
1201
1202         /*
1203          * RBC devices don't have to support READ(6), only READ(10).
1204          */
1205         if (softc->quirks & DA_Q_NO_6_BYTE || SID_TYPE(&cgd->inq_data) == T_RBC)
1206                 softc->minimum_cmd_size = 10;
1207         else
1208                 softc->minimum_cmd_size = 6;
1209
1210         /*
1211          * Load the user's default, if any.
1212          */
1213         snprintf(tmpstr, sizeof(tmpstr), "kern.cam.da.%d.minimum_cmd_size",
1214                  periph->unit_number);
1215         TUNABLE_INT_FETCH(tmpstr, &softc->minimum_cmd_size);
1216
1217         /*
1218          * 6, 10, 12 and 16 are the currently permissible values.
1219          */
1220         if (softc->minimum_cmd_size < 6)
1221                 softc->minimum_cmd_size = 6;
1222         else if ((softc->minimum_cmd_size > 6)
1223               && (softc->minimum_cmd_size <= 10))
1224                 softc->minimum_cmd_size = 10;
1225         else if ((softc->minimum_cmd_size > 10)
1226               && (softc->minimum_cmd_size <= 12))
1227                 softc->minimum_cmd_size = 12;
1228         else if (softc->minimum_cmd_size > 12)
1229                 softc->minimum_cmd_size = 16;
1230
1231         /*
1232          * Register this media as a disk
1233          */
1234
1235         mtx_unlock(periph->sim->mtx);
1236         softc->disk = disk_alloc();
1237         softc->disk->d_open = daopen;
1238         softc->disk->d_close = daclose;
1239         softc->disk->d_strategy = dastrategy;
1240         softc->disk->d_dump = dadump;
1241         softc->disk->d_name = "da";
1242         softc->disk->d_drv1 = periph;
1243         if (cpi.maxio == 0)
1244                 softc->disk->d_maxsize = DFLTPHYS;      /* traditional default */
1245         else if (cpi.maxio > MAXPHYS)
1246                 softc->disk->d_maxsize = MAXPHYS;       /* for safety */
1247         else
1248                 softc->disk->d_maxsize = cpi.maxio;
1249         softc->disk->d_unit = periph->unit_number;
1250         softc->disk->d_flags = 0;
1251         if ((softc->quirks & DA_Q_NO_SYNC_CACHE) == 0)
1252                 softc->disk->d_flags |= DISKFLAG_CANFLUSHCACHE;
1253         strlcpy(softc->disk->d_ident, cgd->serial_num,
1254             MIN(sizeof(softc->disk->d_ident), cgd->serial_num_len + 1));
1255         disk_create(softc->disk, DISK_VERSION);
1256         mtx_lock(periph->sim->mtx);
1257
1258         /*
1259          * Add async callbacks for bus reset and
1260          * bus device reset calls.  I don't bother
1261          * checking if this fails as, in most cases,
1262          * the system will function just fine without
1263          * them and the only alternative would be to
1264          * not attach the device on failure.
1265          */
1266         xpt_register_async(AC_SENT_BDR | AC_BUS_RESET | AC_LOST_DEVICE,
1267                            daasync, periph, periph->path);
1268
1269         /*
1270          * Take an exclusive refcount on the periph while dastart is called
1271          * to finish the probe.  The reference will be dropped in dadone at
1272          * the end of probe.
1273          */
1274         (void)cam_periph_hold(periph, PRIBIO);
1275         xpt_schedule(periph, CAM_PRIORITY_DEV);
1276
1277         /*
1278          * Schedule a periodic event to occasionally send an
1279          * ordered tag to a device.
1280          */
1281         callout_init_mtx(&softc->sendordered_c, periph->sim->mtx, 0);
1282         callout_reset(&softc->sendordered_c,
1283             (DA_DEFAULT_TIMEOUT * hz) / DA_ORDEREDTAG_INTERVAL,
1284             dasendorderedtag, softc);
1285
1286         return(CAM_REQ_CMP);
1287 }
1288
1289 static void
1290 dastart(struct cam_periph *periph, union ccb *start_ccb)
1291 {
1292         struct da_softc *softc;
1293
1294         softc = (struct da_softc *)periph->softc;
1295
1296         switch (softc->state) {
1297         case DA_STATE_NORMAL:
1298         {
1299                 /* Pull a buffer from the queue and get going on it */
1300                 struct bio *bp;
1301
1302                 /*
1303                  * See if there is a buf with work for us to do..
1304                  */
1305                 bp = bioq_first(&softc->bio_queue);
1306                 if (periph->immediate_priority <= periph->pinfo.priority) {
1307                         CAM_DEBUG_PRINT(CAM_DEBUG_SUBTRACE,
1308                                         ("queuing for immediate ccb\n"));
1309                         start_ccb->ccb_h.ccb_state = DA_CCB_WAITING;
1310                         SLIST_INSERT_HEAD(&periph->ccb_list, &start_ccb->ccb_h,
1311                                           periph_links.sle);
1312                         periph->immediate_priority = CAM_PRIORITY_NONE;
1313                         wakeup(&periph->ccb_list);
1314                 } else if (bp == NULL) {
1315                         xpt_release_ccb(start_ccb);
1316                 } else {
1317                         u_int8_t tag_code;
1318
1319                         bioq_remove(&softc->bio_queue, bp);
1320
1321                         if ((bp->bio_flags & BIO_ORDERED) != 0
1322                          || (softc->flags & DA_FLAG_NEED_OTAG) != 0) {
1323                                 softc->flags &= ~DA_FLAG_NEED_OTAG;
1324                                 softc->ordered_tag_count++;
1325                                 tag_code = MSG_ORDERED_Q_TAG;
1326                         } else {
1327                                 tag_code = MSG_SIMPLE_Q_TAG;
1328                         }
1329                         switch (bp->bio_cmd) {
1330                         case BIO_READ:
1331                         case BIO_WRITE:
1332                                 scsi_read_write(&start_ccb->csio,
1333                                                 /*retries*/da_retry_count,
1334                                                 /*cbfcnp*/dadone,
1335                                                 /*tag_action*/tag_code,
1336                                                 /*read_op*/bp->bio_cmd
1337                                                         == BIO_READ,
1338                                                 /*byte2*/0,
1339                                                 softc->minimum_cmd_size,
1340                                                 /*lba*/bp->bio_pblkno,
1341                                                 /*block_count*/bp->bio_bcount /
1342                                                 softc->params.secsize,
1343                                                 /*data_ptr*/ bp->bio_data,
1344                                                 /*dxfer_len*/ bp->bio_bcount,
1345                                                 /*sense_len*/SSD_FULL_SIZE,
1346                                                 da_default_timeout * 1000);
1347                                 break;
1348                         case BIO_FLUSH:
1349                                 /*
1350                                  * BIO_FLUSH doesn't currently communicate
1351                                  * range data, so we synchronize the cache
1352                                  * over the whole disk.  We also force
1353                                  * ordered tag semantics the flush applies
1354                                  * to all previously queued I/O.
1355                                  */
1356                                 scsi_synchronize_cache(&start_ccb->csio,
1357                                                        /*retries*/1,
1358                                                        /*cbfcnp*/dadone,
1359                                                        MSG_ORDERED_Q_TAG,
1360                                                        /*begin_lba*/0,
1361                                                        /*lb_count*/0,
1362                                                        SSD_FULL_SIZE,
1363                                                        da_default_timeout*1000);
1364                                 break;
1365                         }
1366                         start_ccb->ccb_h.ccb_state = DA_CCB_BUFFER_IO;
1367
1368                         /*
1369                          * Block out any asyncronous callbacks
1370                          * while we touch the pending ccb list.
1371                          */
1372                         LIST_INSERT_HEAD(&softc->pending_ccbs,
1373                                          &start_ccb->ccb_h, periph_links.le);
1374                         softc->outstanding_cmds++;
1375
1376                         /* We expect a unit attention from this device */
1377                         if ((softc->flags & DA_FLAG_RETRY_UA) != 0) {
1378                                 start_ccb->ccb_h.ccb_state |= DA_CCB_RETRY_UA;
1379                                 softc->flags &= ~DA_FLAG_RETRY_UA;
1380                         }
1381
1382                         start_ccb->ccb_h.ccb_bp = bp;
1383                         bp = bioq_first(&softc->bio_queue);
1384
1385                         xpt_action(start_ccb);
1386                 }
1387
1388                 if (bp != NULL) {
1389                         /* Have more work to do, so ensure we stay scheduled */
1390                         xpt_schedule(periph, CAM_PRIORITY_NORMAL);
1391                 }
1392                 break;
1393         }
1394         case DA_STATE_PROBE:
1395         {
1396                 struct ccb_scsiio *csio;
1397                 struct scsi_read_capacity_data *rcap;
1398
1399                 rcap = (struct scsi_read_capacity_data *)
1400                     malloc(sizeof(*rcap), M_SCSIDA, M_NOWAIT|M_ZERO);
1401                 if (rcap == NULL) {
1402                         printf("dastart: Couldn't malloc read_capacity data\n");
1403                         /* da_free_periph??? */
1404                         break;
1405                 }
1406                 csio = &start_ccb->csio;
1407                 scsi_read_capacity(csio,
1408                                    /*retries*/4,
1409                                    dadone,
1410                                    MSG_SIMPLE_Q_TAG,
1411                                    rcap,
1412                                    SSD_FULL_SIZE,
1413                                    /*timeout*/5000);
1414                 start_ccb->ccb_h.ccb_bp = NULL;
1415                 start_ccb->ccb_h.ccb_state = DA_CCB_PROBE;
1416                 xpt_action(start_ccb);
1417                 break;
1418         }
1419         case DA_STATE_PROBE2:
1420         {
1421                 struct ccb_scsiio *csio;
1422                 struct scsi_read_capacity_data_long *rcaplong;
1423
1424                 rcaplong = (struct scsi_read_capacity_data_long *)
1425                         malloc(sizeof(*rcaplong), M_SCSIDA, M_NOWAIT|M_ZERO);
1426                 if (rcaplong == NULL) {
1427                         printf("dastart: Couldn't malloc read_capacity data\n");
1428                         /* da_free_periph??? */
1429                         break;
1430                 }
1431                 csio = &start_ccb->csio;
1432                 scsi_read_capacity_16(csio,
1433                                       /*retries*/ 4,
1434                                       /*cbfcnp*/ dadone,
1435                                       /*tag_action*/ MSG_SIMPLE_Q_TAG,
1436                                       /*lba*/ 0,
1437                                       /*reladr*/ 0,
1438                                       /*pmi*/ 0,
1439                                       rcaplong,
1440                                       /*sense_len*/ SSD_FULL_SIZE,
1441                                       /*timeout*/ 60000);
1442                 start_ccb->ccb_h.ccb_bp = NULL;
1443                 start_ccb->ccb_h.ccb_state = DA_CCB_PROBE2;
1444                 xpt_action(start_ccb);
1445                 break;
1446         }
1447         }
1448 }
1449
1450 static int
1451 cmd6workaround(union ccb *ccb)
1452 {
1453         struct scsi_rw_6 cmd6;
1454         struct scsi_rw_10 *cmd10;
1455         struct da_softc *softc;
1456         u_int8_t *cdb;
1457         int frozen;
1458
1459         cdb = ccb->csio.cdb_io.cdb_bytes;
1460
1461         /* Translation only possible if CDB is an array and cmd is R/W6 */
1462         if ((ccb->ccb_h.flags & CAM_CDB_POINTER) != 0 ||
1463             (*cdb != READ_6 && *cdb != WRITE_6))
1464                 return 0;
1465
1466         xpt_print(ccb->ccb_h.path, "READ(6)/WRITE(6) not supported, "
1467             "increasing minimum_cmd_size to 10.\n");
1468         softc = (struct da_softc *)xpt_path_periph(ccb->ccb_h.path)->softc;
1469         softc->minimum_cmd_size = 10;
1470
1471         bcopy(cdb, &cmd6, sizeof(struct scsi_rw_6));
1472         cmd10 = (struct scsi_rw_10 *)cdb;
1473         cmd10->opcode = (cmd6.opcode == READ_6) ? READ_10 : WRITE_10;
1474         cmd10->byte2 = 0;
1475         scsi_ulto4b(scsi_3btoul(cmd6.addr), cmd10->addr);
1476         cmd10->reserved = 0;
1477         scsi_ulto2b(cmd6.length, cmd10->length);
1478         cmd10->control = cmd6.control;
1479         ccb->csio.cdb_len = sizeof(*cmd10);
1480
1481         /* Requeue request, unfreezing queue if necessary */
1482         frozen = (ccb->ccb_h.status & CAM_DEV_QFRZN) != 0;
1483         ccb->ccb_h.status = CAM_REQUEUE_REQ;
1484         xpt_action(ccb);
1485         if (frozen) {
1486                 cam_release_devq(ccb->ccb_h.path,
1487                                  /*relsim_flags*/0,
1488                                  /*reduction*/0,
1489                                  /*timeout*/0,
1490                                  /*getcount_only*/0);
1491         }
1492         return (ERESTART);
1493 }
1494
1495 static void
1496 dadone(struct cam_periph *periph, union ccb *done_ccb)
1497 {
1498         struct da_softc *softc;
1499         struct ccb_scsiio *csio;
1500         u_int32_t  priority;
1501
1502         softc = (struct da_softc *)periph->softc;
1503         priority = done_ccb->ccb_h.pinfo.priority;
1504         csio = &done_ccb->csio;
1505         switch (csio->ccb_h.ccb_state & DA_CCB_TYPE_MASK) {
1506         case DA_CCB_BUFFER_IO:
1507         {
1508                 struct bio *bp;
1509
1510                 bp = (struct bio *)done_ccb->ccb_h.ccb_bp;
1511                 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1512                         int error;
1513                         int sf;
1514
1515                         if ((csio->ccb_h.ccb_state & DA_CCB_RETRY_UA) != 0)
1516                                 sf = SF_RETRY_UA;
1517                         else
1518                                 sf = 0;
1519
1520                         error = daerror(done_ccb, CAM_RETRY_SELTO, sf);
1521                         if (error == ERESTART) {
1522                                 /*
1523                                  * A retry was scheuled, so
1524                                  * just return.
1525                                  */
1526                                 return;
1527                         }
1528                         if (error != 0) {
1529
1530                                 if (error == ENXIO) {
1531                                         /*
1532                                          * Catastrophic error.  Mark our pack as
1533                                          * invalid.
1534                                          */
1535                                         /*
1536                                          * XXX See if this is really a media
1537                                          * XXX change first?
1538                                          */
1539                                         xpt_print(periph->path,
1540                                             "Invalidating pack\n");
1541                                         softc->flags |= DA_FLAG_PACK_INVALID;
1542                                 }
1543
1544                                 /*
1545                                  * return all queued I/O with EIO, so that
1546                                  * the client can retry these I/Os in the
1547                                  * proper order should it attempt to recover.
1548                                  */
1549                                 bioq_flush(&softc->bio_queue, NULL, EIO);
1550                                 bp->bio_error = error;
1551                                 bp->bio_resid = bp->bio_bcount;
1552                                 bp->bio_flags |= BIO_ERROR;
1553                         } else {
1554                                 bp->bio_resid = csio->resid;
1555                                 bp->bio_error = 0;
1556                                 if (bp->bio_resid != 0)
1557                                         bp->bio_flags |= BIO_ERROR;
1558                         }
1559                         if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
1560                                 cam_release_devq(done_ccb->ccb_h.path,
1561                                                  /*relsim_flags*/0,
1562                                                  /*reduction*/0,
1563                                                  /*timeout*/0,
1564                                                  /*getcount_only*/0);
1565                 } else {
1566                         if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
1567                                 panic("REQ_CMP with QFRZN");
1568                         bp->bio_resid = csio->resid;
1569                         if (csio->resid > 0)
1570                                 bp->bio_flags |= BIO_ERROR;
1571                 }
1572
1573                 /*
1574                  * Block out any asyncronous callbacks
1575                  * while we touch the pending ccb list.
1576                  */
1577                 LIST_REMOVE(&done_ccb->ccb_h, periph_links.le);
1578                 softc->outstanding_cmds--;
1579                 if (softc->outstanding_cmds == 0)
1580                         softc->flags |= DA_FLAG_WENT_IDLE;
1581
1582                 biodone(bp);
1583                 break;
1584         }
1585         case DA_CCB_PROBE:
1586         case DA_CCB_PROBE2:
1587         {
1588                 struct     scsi_read_capacity_data *rdcap;
1589                 struct     scsi_read_capacity_data_long *rcaplong;
1590                 char       announce_buf[80];
1591
1592                 rdcap = NULL;
1593                 rcaplong = NULL;
1594                 if (softc->state == DA_STATE_PROBE)
1595                         rdcap =(struct scsi_read_capacity_data *)csio->data_ptr;
1596                 else
1597                         rcaplong = (struct scsi_read_capacity_data_long *)
1598                                 csio->data_ptr;
1599
1600                 if ((csio->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP) {
1601                         struct disk_params *dp;
1602                         uint32_t block_size;
1603                         uint64_t maxsector;
1604
1605                         if (softc->state == DA_STATE_PROBE) {
1606                                 block_size = scsi_4btoul(rdcap->length);
1607                                 maxsector = scsi_4btoul(rdcap->addr);
1608
1609                                 /*
1610                                  * According to SBC-2, if the standard 10
1611                                  * byte READ CAPACITY command returns 2^32,
1612                                  * we should issue the 16 byte version of
1613                                  * the command, since the device in question
1614                                  * has more sectors than can be represented
1615                                  * with the short version of the command.
1616                                  */
1617                                 if (maxsector == 0xffffffff) {
1618                                         softc->state = DA_STATE_PROBE2;
1619                                         free(rdcap, M_SCSIDA);
1620                                         xpt_release_ccb(done_ccb);
1621                                         xpt_schedule(periph, priority);
1622                                         return;
1623                                 }
1624                         } else {
1625                                 block_size = scsi_4btoul(rcaplong->length);
1626                                 maxsector = scsi_8btou64(rcaplong->addr);
1627                         }
1628
1629                         /*
1630                          * Because GEOM code just will panic us if we
1631                          * give them an 'illegal' value we'll avoid that
1632                          * here.
1633                          */
1634                         if (block_size == 0 && maxsector == 0) {
1635                                 snprintf(announce_buf, sizeof(announce_buf),
1636                                         "0MB (no media?)");
1637                         } else if (block_size >= MAXPHYS || block_size == 0) {
1638                                 xpt_print(periph->path,
1639                                     "unsupportable block size %ju\n",
1640                                     (uintmax_t) block_size);
1641                                 announce_buf[0] = '\0';
1642                                 cam_periph_invalidate(periph);
1643                         } else {
1644                                 dasetgeom(periph, block_size, maxsector);
1645                                 dp = &softc->params;
1646                                 snprintf(announce_buf, sizeof(announce_buf),
1647                                         "%juMB (%ju %u byte sectors: %dH %dS/T "
1648                                         "%dC)", (uintmax_t)
1649                                         (((uintmax_t)dp->secsize *
1650                                         dp->sectors) / (1024*1024)),
1651                                         (uintmax_t)dp->sectors,
1652                                         dp->secsize, dp->heads,
1653                                         dp->secs_per_track, dp->cylinders);
1654                         }
1655                 } else {
1656                         int     error;
1657
1658                         announce_buf[0] = '\0';
1659
1660                         /*
1661                          * Retry any UNIT ATTENTION type errors.  They
1662                          * are expected at boot.
1663                          */
1664                         error = daerror(done_ccb, CAM_RETRY_SELTO,
1665                                         SF_RETRY_UA|SF_NO_PRINT);
1666                         if (error == ERESTART) {
1667                                 /*
1668                                  * A retry was scheuled, so
1669                                  * just return.
1670                                  */
1671                                 return;
1672                         } else if (error != 0) {
1673                                 struct scsi_sense_data *sense;
1674                                 int asc, ascq;
1675                                 int sense_key, error_code;
1676                                 int have_sense;
1677                                 cam_status status;
1678                                 struct ccb_getdev cgd;
1679
1680                                 /* Don't wedge this device's queue */
1681                                 status = done_ccb->ccb_h.status;
1682                                 if ((status & CAM_DEV_QFRZN) != 0)
1683                                         cam_release_devq(done_ccb->ccb_h.path,
1684                                                          /*relsim_flags*/0,
1685                                                          /*reduction*/0,
1686                                                          /*timeout*/0,
1687                                                          /*getcount_only*/0);
1688
1689
1690                                 xpt_setup_ccb(&cgd.ccb_h,
1691                                               done_ccb->ccb_h.path,
1692                                               CAM_PRIORITY_NORMAL);
1693                                 cgd.ccb_h.func_code = XPT_GDEV_TYPE;
1694                                 xpt_action((union ccb *)&cgd);
1695
1696                                 if (((csio->ccb_h.flags & CAM_SENSE_PHYS) != 0)
1697                                  || ((csio->ccb_h.flags & CAM_SENSE_PTR) != 0)
1698                                  || ((status & CAM_AUTOSNS_VALID) == 0))
1699                                         have_sense = FALSE;
1700                                 else
1701                                         have_sense = TRUE;
1702
1703                                 if (have_sense) {
1704                                         sense = &csio->sense_data;
1705                                         scsi_extract_sense(sense, &error_code,
1706                                                            &sense_key,
1707                                                            &asc, &ascq);
1708                                 }
1709                                 /*
1710                                  * Attach to anything that claims to be a
1711                                  * direct access or optical disk device,
1712                                  * as long as it doesn't return a "Logical
1713                                  * unit not supported" (0x25) error.
1714                                  */
1715                                 if ((have_sense) && (asc != 0x25)
1716                                  && (error_code == SSD_CURRENT_ERROR)) {
1717                                         const char *sense_key_desc;
1718                                         const char *asc_desc;
1719
1720                                         scsi_sense_desc(sense_key, asc, ascq,
1721                                                         &cgd.inq_data,
1722                                                         &sense_key_desc,
1723                                                         &asc_desc);
1724                                         snprintf(announce_buf,
1725                                             sizeof(announce_buf),
1726                                                 "Attempt to query device "
1727                                                 "size failed: %s, %s",
1728                                                 sense_key_desc,
1729                                                 asc_desc);
1730                                 } else {
1731                                         if (have_sense)
1732                                                 scsi_sense_print(
1733                                                         &done_ccb->csio);
1734                                         else {
1735                                                 xpt_print(periph->path,
1736                                                     "got CAM status %#x\n",
1737                                                     done_ccb->ccb_h.status);
1738                                         }
1739
1740                                         xpt_print(periph->path, "fatal error, "
1741                                             "failed to attach to device\n");
1742
1743                                         /*
1744                                          * Free up resources.
1745                                          */
1746                                         cam_periph_invalidate(periph);
1747                                 }
1748                         }
1749                 }
1750                 free(csio->data_ptr, M_SCSIDA);
1751                 if (announce_buf[0] != '\0') {
1752                         xpt_announce_periph(periph, announce_buf);
1753                         /*
1754                          * Create our sysctl variables, now that we know
1755                          * we have successfully attached.
1756                          */
1757                         taskqueue_enqueue(taskqueue_thread,&softc->sysctl_task);
1758                 }
1759                 softc->state = DA_STATE_NORMAL;
1760                 /*
1761                  * Since our peripheral may be invalidated by an error
1762                  * above or an external event, we must release our CCB
1763                  * before releasing the probe lock on the peripheral.
1764                  * The peripheral will only go away once the last lock
1765                  * is removed, and we need it around for the CCB release
1766                  * operation.
1767                  */
1768                 xpt_release_ccb(done_ccb);
1769                 cam_periph_unhold(periph);
1770                 return;
1771         }
1772         case DA_CCB_WAITING:
1773         {
1774                 /* Caller will release the CCB */
1775                 wakeup(&done_ccb->ccb_h.cbfcnp);
1776                 return;
1777         }
1778         case DA_CCB_DUMP:
1779                 /* No-op.  We're polling */
1780                 return;
1781         default:
1782                 break;
1783         }
1784         xpt_release_ccb(done_ccb);
1785 }
1786
1787 static int
1788 daerror(union ccb *ccb, u_int32_t cam_flags, u_int32_t sense_flags)
1789 {
1790         struct da_softc   *softc;
1791         struct cam_periph *periph;
1792         int error;
1793
1794         periph = xpt_path_periph(ccb->ccb_h.path);
1795         softc = (struct da_softc *)periph->softc;
1796
1797         /*
1798          * Automatically detect devices that do not support
1799          * READ(6)/WRITE(6) and upgrade to using 10 byte cdbs.
1800          */
1801         error = 0;
1802         if ((ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_INVALID) {
1803                 error = cmd6workaround(ccb);
1804         } else if (((ccb->ccb_h.status & CAM_STATUS_MASK) ==
1805                    CAM_SCSI_STATUS_ERROR)
1806          && (ccb->ccb_h.status & CAM_AUTOSNS_VALID)
1807          && (ccb->csio.scsi_status == SCSI_STATUS_CHECK_COND)
1808          && ((ccb->ccb_h.flags & CAM_SENSE_PHYS) == 0)
1809          && ((ccb->ccb_h.flags & CAM_SENSE_PTR) == 0)) {
1810                 int sense_key, error_code, asc, ascq;
1811
1812                 scsi_extract_sense(&ccb->csio.sense_data,
1813                                    &error_code, &sense_key, &asc, &ascq);
1814                 if (sense_key == SSD_KEY_ILLEGAL_REQUEST)
1815                         error = cmd6workaround(ccb);
1816         }
1817         if (error == ERESTART)
1818                 return (ERESTART);
1819
1820         /*
1821          * XXX
1822          * Until we have a better way of doing pack validation,
1823          * don't treat UAs as errors.
1824          */
1825         sense_flags |= SF_RETRY_UA;
1826         return(cam_periph_error(ccb, cam_flags, sense_flags,
1827                                 &softc->saved_ccb));
1828 }
1829
1830 static void
1831 daprevent(struct cam_periph *periph, int action)
1832 {
1833         struct  da_softc *softc;
1834         union   ccb *ccb;
1835         int     error;
1836
1837         softc = (struct da_softc *)periph->softc;
1838
1839         if (((action == PR_ALLOW)
1840           && (softc->flags & DA_FLAG_PACK_LOCKED) == 0)
1841          || ((action == PR_PREVENT)
1842           && (softc->flags & DA_FLAG_PACK_LOCKED) != 0)) {
1843                 return;
1844         }
1845
1846         ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL);
1847
1848         scsi_prevent(&ccb->csio,
1849                      /*retries*/1,
1850                      /*cbcfp*/dadone,
1851                      MSG_SIMPLE_Q_TAG,
1852                      action,
1853                      SSD_FULL_SIZE,
1854                      5000);
1855
1856         error = cam_periph_runccb(ccb, /*error_routine*/NULL, CAM_RETRY_SELTO,
1857                                   SF_RETRY_UA, softc->disk->d_devstat);
1858
1859         if (error == 0) {
1860                 if (action == PR_ALLOW)
1861                         softc->flags &= ~DA_FLAG_PACK_LOCKED;
1862                 else
1863                         softc->flags |= DA_FLAG_PACK_LOCKED;
1864         }
1865
1866         xpt_release_ccb(ccb);
1867 }
1868
1869 static int
1870 dagetcapacity(struct cam_periph *periph)
1871 {
1872         struct da_softc *softc;
1873         union ccb *ccb;
1874         struct scsi_read_capacity_data *rcap;
1875         struct scsi_read_capacity_data_long *rcaplong;
1876         uint32_t block_len;
1877         uint64_t maxsector;
1878         int error;
1879         u_int32_t sense_flags;
1880
1881         softc = (struct da_softc *)periph->softc;
1882         block_len = 0;
1883         maxsector = 0;
1884         error = 0;
1885         sense_flags = SF_RETRY_UA;
1886         if (softc->flags & DA_FLAG_PACK_REMOVABLE)
1887                 sense_flags |= SF_NO_PRINT;
1888
1889         /* Do a read capacity */
1890         rcap = (struct scsi_read_capacity_data *)malloc(sizeof(*rcaplong),
1891                                                         M_SCSIDA,
1892                                                         M_NOWAIT);
1893         if (rcap == NULL)
1894                 return (ENOMEM);
1895
1896         ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL);
1897         scsi_read_capacity(&ccb->csio,
1898                            /*retries*/4,
1899                            /*cbfncp*/dadone,
1900                            MSG_SIMPLE_Q_TAG,
1901                            rcap,
1902                            SSD_FULL_SIZE,
1903                            /*timeout*/60000);
1904         ccb->ccb_h.ccb_bp = NULL;
1905
1906         error = cam_periph_runccb(ccb, daerror,
1907                                   /*cam_flags*/CAM_RETRY_SELTO,
1908                                   sense_flags,
1909                                   softc->disk->d_devstat);
1910
1911         if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
1912                 cam_release_devq(ccb->ccb_h.path,
1913                                  /*relsim_flags*/0,
1914                                  /*reduction*/0,
1915                                  /*timeout*/0,
1916                                  /*getcount_only*/0);
1917
1918         if (error == 0) {
1919                 block_len = scsi_4btoul(rcap->length);
1920                 maxsector = scsi_4btoul(rcap->addr);
1921
1922                 if (maxsector != 0xffffffff)
1923                         goto done;
1924         } else
1925                 goto done;
1926
1927         rcaplong = (struct scsi_read_capacity_data_long *)rcap;
1928
1929         scsi_read_capacity_16(&ccb->csio,
1930                               /*retries*/ 4,
1931                               /*cbfcnp*/ dadone,
1932                               /*tag_action*/ MSG_SIMPLE_Q_TAG,
1933                               /*lba*/ 0,
1934                               /*reladr*/ 0,
1935                               /*pmi*/ 0,
1936                               rcaplong,
1937                               /*sense_len*/ SSD_FULL_SIZE,
1938                               /*timeout*/ 60000);
1939         ccb->ccb_h.ccb_bp = NULL;
1940
1941         error = cam_periph_runccb(ccb, daerror,
1942                                   /*cam_flags*/CAM_RETRY_SELTO,
1943                                   sense_flags,
1944                                   softc->disk->d_devstat);
1945
1946         if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
1947                 cam_release_devq(ccb->ccb_h.path,
1948                                  /*relsim_flags*/0,
1949                                  /*reduction*/0,
1950                                  /*timeout*/0,
1951                                  /*getcount_only*/0);
1952
1953         if (error == 0) {
1954                 block_len = scsi_4btoul(rcaplong->length);
1955                 maxsector = scsi_8btou64(rcaplong->addr);
1956         }
1957
1958 done:
1959
1960         if (error == 0) {
1961                 if (block_len >= MAXPHYS || block_len == 0) {
1962                         xpt_print(periph->path,
1963                             "unsupportable block size %ju\n",
1964                             (uintmax_t) block_len);
1965                         error = EINVAL;
1966                 } else
1967                         dasetgeom(periph, block_len, maxsector);
1968         }
1969
1970         xpt_release_ccb(ccb);
1971
1972         free(rcap, M_SCSIDA);
1973
1974         return (error);
1975 }
1976
1977 static void
1978 dasetgeom(struct cam_periph *periph, uint32_t block_len, uint64_t maxsector)
1979 {
1980         struct ccb_calc_geometry ccg;
1981         struct da_softc *softc;
1982         struct disk_params *dp;
1983
1984         softc = (struct da_softc *)periph->softc;
1985
1986         dp = &softc->params;
1987         dp->secsize = block_len;
1988         dp->sectors = maxsector + 1;
1989         /*
1990          * Have the controller provide us with a geometry
1991          * for this disk.  The only time the geometry
1992          * matters is when we boot and the controller
1993          * is the only one knowledgeable enough to come
1994          * up with something that will make this a bootable
1995          * device.
1996          */
1997         xpt_setup_ccb(&ccg.ccb_h, periph->path, CAM_PRIORITY_NORMAL);
1998         ccg.ccb_h.func_code = XPT_CALC_GEOMETRY;
1999         ccg.block_size = dp->secsize;
2000         ccg.volume_size = dp->sectors;
2001         ccg.heads = 0;
2002         ccg.secs_per_track = 0;
2003         ccg.cylinders = 0;
2004         xpt_action((union ccb*)&ccg);
2005         if ((ccg.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
2006                 /*
2007                  * We don't know what went wrong here- but just pick
2008                  * a geometry so we don't have nasty things like divide
2009                  * by zero.
2010                  */
2011                 dp->heads = 255;
2012                 dp->secs_per_track = 255;
2013                 dp->cylinders = dp->sectors / (255 * 255);
2014                 if (dp->cylinders == 0) {
2015                         dp->cylinders = 1;
2016                 }
2017         } else {
2018                 dp->heads = ccg.heads;
2019                 dp->secs_per_track = ccg.secs_per_track;
2020                 dp->cylinders = ccg.cylinders;
2021         }
2022 }
2023
2024 static void
2025 dasendorderedtag(void *arg)
2026 {
2027         struct da_softc *softc = arg;
2028
2029         if (da_send_ordered) {
2030                 if ((softc->ordered_tag_count == 0)
2031                  && ((softc->flags & DA_FLAG_WENT_IDLE) == 0)) {
2032                         softc->flags |= DA_FLAG_NEED_OTAG;
2033                 }
2034                 if (softc->outstanding_cmds > 0)
2035                         softc->flags &= ~DA_FLAG_WENT_IDLE;
2036
2037                 softc->ordered_tag_count = 0;
2038         }
2039         /* Queue us up again */
2040         callout_reset(&softc->sendordered_c,
2041             (DA_DEFAULT_TIMEOUT * hz) / DA_ORDEREDTAG_INTERVAL,
2042             dasendorderedtag, softc);
2043 }
2044
2045 /*
2046  * Step through all DA peripheral drivers, and if the device is still open,
2047  * sync the disk cache to physical media.
2048  */
2049 static void
2050 dashutdown(void * arg, int howto)
2051 {
2052         struct cam_periph *periph;
2053         struct da_softc *softc;
2054
2055         TAILQ_FOREACH(periph, &dadriver.units, unit_links) {
2056                 union ccb ccb;
2057
2058                 cam_periph_lock(periph);
2059                 softc = (struct da_softc *)periph->softc;
2060
2061                 /*
2062                  * We only sync the cache if the drive is still open, and
2063                  * if the drive is capable of it..
2064                  */
2065                 if (((softc->flags & DA_FLAG_OPEN) == 0)
2066                  || (softc->quirks & DA_Q_NO_SYNC_CACHE)) {
2067                         cam_periph_unlock(periph);
2068                         continue;
2069                 }
2070
2071                 xpt_setup_ccb(&ccb.ccb_h, periph->path, CAM_PRIORITY_NORMAL);
2072
2073                 ccb.ccb_h.ccb_state = DA_CCB_DUMP;
2074                 scsi_synchronize_cache(&ccb.csio,
2075                                        /*retries*/1,
2076                                        /*cbfcnp*/dadone,
2077                                        MSG_SIMPLE_Q_TAG,
2078                                        /*begin_lba*/0, /* whole disk */
2079                                        /*lb_count*/0,
2080                                        SSD_FULL_SIZE,
2081                                        60 * 60 * 1000);
2082
2083                 xpt_polled_action(&ccb);
2084
2085                 if ((ccb.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
2086                         if (((ccb.ccb_h.status & CAM_STATUS_MASK) ==
2087                              CAM_SCSI_STATUS_ERROR)
2088                          && (ccb.csio.scsi_status == SCSI_STATUS_CHECK_COND)){
2089                                 int error_code, sense_key, asc, ascq;
2090
2091                                 scsi_extract_sense(&ccb.csio.sense_data,
2092                                                    &error_code, &sense_key,
2093                                                    &asc, &ascq);
2094
2095                                 if (sense_key != SSD_KEY_ILLEGAL_REQUEST)
2096                                         scsi_sense_print(&ccb.csio);
2097                         } else {
2098                                 xpt_print(periph->path, "Synchronize "
2099                                     "cache failed, status == 0x%x, scsi status "
2100                                     "== 0x%x\n", ccb.ccb_h.status,
2101                                     ccb.csio.scsi_status);
2102                         }
2103                 }
2104
2105                 if ((ccb.ccb_h.status & CAM_DEV_QFRZN) != 0)
2106                         cam_release_devq(ccb.ccb_h.path,
2107                                          /*relsim_flags*/0,
2108                                          /*reduction*/0,
2109                                          /*timeout*/0,
2110                                          /*getcount_only*/0);
2111                 cam_periph_unlock(periph);
2112         }
2113 }
2114
2115 #else /* !_KERNEL */
2116
2117 /*
2118  * XXX This is only left out of the kernel build to silence warnings.  If,
2119  * for some reason this function is used in the kernel, the ifdefs should
2120  * be moved so it is included both in the kernel and userland.
2121  */
2122 void
2123 scsi_format_unit(struct ccb_scsiio *csio, u_int32_t retries,
2124                  void (*cbfcnp)(struct cam_periph *, union ccb *),
2125                  u_int8_t tag_action, u_int8_t byte2, u_int16_t ileave,
2126                  u_int8_t *data_ptr, u_int32_t dxfer_len, u_int8_t sense_len,
2127                  u_int32_t timeout)
2128 {
2129         struct scsi_format_unit *scsi_cmd;
2130
2131         scsi_cmd = (struct scsi_format_unit *)&csio->cdb_io.cdb_bytes;
2132         scsi_cmd->opcode = FORMAT_UNIT;
2133         scsi_cmd->byte2 = byte2;
2134         scsi_ulto2b(ileave, scsi_cmd->interleave);
2135
2136         cam_fill_csio(csio,
2137                       retries,
2138                       cbfcnp,
2139                       /*flags*/ (dxfer_len > 0) ? CAM_DIR_OUT : CAM_DIR_NONE,
2140                       tag_action,
2141                       data_ptr,
2142                       dxfer_len,
2143                       sense_len,
2144                       sizeof(*scsi_cmd),
2145                       timeout);
2146 }
2147
2148 #endif /* _KERNEL */