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 static  disk_strategy_t dastrategy;
 561 static  dumper_t        dadump;
 562 static  periph_init_t   dainit;
 563 static  void            daasync(void *callback_arg, u_int32_t code,
 564                                 struct cam_path *path, void *arg);
 565 static  void            dasysctlinit(void *context, int pending);
 566 static  int             dacmdsizesysctl(SYSCTL_HANDLER_ARGS);
 567 static  periph_ctor_t   daregister;
 568 static  periph_dtor_t   dacleanup;
 569 static  periph_start_t  dastart;
 570 static  periph_oninv_t  daoninvalidate;
 571 static  void            dadone(struct cam_periph *periph,
 572                                union ccb *done_ccb);
 573 static  int             daerror(union ccb *ccb, u_int32_t cam_flags,
 574                                 u_int32_t sense_flags);
 575 static void             daprevent(struct cam_periph *periph, int action);
 576 static int              dagetcapacity(struct cam_periph *periph);
 577 static void             dasetgeom(struct cam_periph *periph, uint32_t block_len,
 578                                   uint64_t maxsector);
 579 static timeout_t        dasendorderedtag;
 580 static void             dashutdown(void *arg, int howto);
 581
 582 #ifndef DA_DEFAULT_TIMEOUT
 583 #define DA_DEFAULT_TIMEOUT 60   /* Timeout in seconds */
 584 #endif
 585
 586 #ifndef DA_DEFAULT_RETRY
 587 #define DA_DEFAULT_RETRY        4
 588 #endif
 589
 590 #ifndef DA_DEFAULT_SEND_ORDERED
 591 #define DA_DEFAULT_SEND_ORDERED 1
 592 #endif
 593
 594
 595 static int da_retry_count = DA_DEFAULT_RETRY;
 596 static int da_default_timeout = DA_DEFAULT_TIMEOUT;
 597 static int da_send_ordered = DA_DEFAULT_SEND_ORDERED;
 598
 599 SYSCTL_NODE(_kern_cam, OID_AUTO, da, CTLFLAG_RD, 0,
 600             "CAM Direct Access Disk driver");
 601 SYSCTL_INT(_kern_cam_da, OID_AUTO, retry_count, CTLFLAG_RW,
 602            &da_retry_count, 0, "Normal I/O retry count");
 603 TUNABLE_INT("kern.cam.da.retry_count", &da_retry_count);
 604 SYSCTL_INT(_kern_cam_da, OID_AUTO, default_timeout, CTLFLAG_RW,
 605            &da_default_timeout, 0, "Normal I/O timeout (in seconds)");
 606 TUNABLE_INT("kern.cam.da.default_timeout", &da_default_timeout);
 607 SYSCTL_INT(_kern_cam_da, OID_AUTO, da_send_ordered, CTLFLAG_RW,
 608            &da_send_ordered, 0, "Send Ordered Tags");
 609 TUNABLE_INT("kern.cam.da.da_send_ordered", &da_send_ordered);
 610
 611 /*
 612  * DA_ORDEREDTAG_INTERVAL determines how often, relative
 613  * to the default timeout, we check to see whether an ordered
 614  * tagged transaction is appropriate to prevent simple tag
 615  * starvation.  Since we'd like to ensure that there is at least
 616  * 1/2 of the timeout length left for a starved transaction to
 617  * complete after we've sent an ordered tag, we must poll at least
 618  * four times in every timeout period.  This takes care of the worst
 619  * case where a starved transaction starts during an interval that
 620  * meets the requirement "don't send an ordered tag" test so it takes
 621  * us two intervals to determine that a tag must be sent.
 622  */
 623 #ifndef DA_ORDEREDTAG_INTERVAL
 624 #define DA_ORDEREDTAG_INTERVAL 4
 625 #endif
 626
 627 static struct periph_driver dadriver =
 628 {
 629         dainit, "da",
 630         TAILQ_HEAD_INITIALIZER(dadriver.units), /* generation */ 0
 631 };
 632
 633 PERIPHDRIVER_DECLARE(da, dadriver);
 634
 635 MALLOC_DEFINE(M_SCSIDA, "scsi_da", "scsi_da buffers");
 636
 637 static int
 638 daopen(struct disk *dp)
 639 {
 640         struct cam_periph *periph;
 641         struct da_softc *softc;
 642         int unit;
 643         int error;
 644
 645         periph = (struct cam_periph *)dp->d_drv1;
 646         if (periph == NULL) {
 647                 return (ENXIO);
 648         }
 649
 650         if (cam_periph_acquire(periph) != CAM_REQ_CMP) {
 651                 return(ENXIO);
 652         }
 653
 654         cam_periph_lock(periph);
 655         if ((error = cam_periph_hold(periph, PRIBIO|PCATCH)) != 0) {
 656                 cam_periph_unlock(periph);
 657                 cam_periph_release(periph);
 658                 return (error);
 659         }
 660
 661         unit = periph->unit_number;
 662         softc = (struct da_softc *)periph->softc;
 663         softc->flags |= DA_FLAG_OPEN;
 664
 665         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE,
 666             ("daopen: disk=%s%d (unit %d)\n", dp->d_name, dp->d_unit,
 667              unit));
 668
 669         if ((softc->flags & DA_FLAG_PACK_INVALID) != 0) {
 670                 /* Invalidate our pack information. */
 671                 softc->flags &= ~DA_FLAG_PACK_INVALID;
 672         }
 673
 674         error = dagetcapacity(periph);
 675
 676         if (error == 0) {
 677
 678                 softc->disk->d_sectorsize = softc->params.secsize;
 679                 softc->disk->d_mediasize = softc->params.secsize * (off_t)softc->params.sectors;
 680                 /* XXX: these are not actually "firmware" values, so they may be wrong */
 681                 softc->disk->d_fwsectors = softc->params.secs_per_track;
 682                 softc->disk->d_fwheads = softc->params.heads;
 683                 softc->disk->d_devstat->block_size = softc->params.secsize;
 684                 softc->disk->d_devstat->flags &= ~DEVSTAT_BS_UNAVAILABLE;
 685
 686                 if ((softc->flags & DA_FLAG_PACK_REMOVABLE) != 0 &&
 687                     (softc->quirks & DA_Q_NO_PREVENT) == 0)
 688                         daprevent(periph, PR_PREVENT);
 689         } else
 690                 softc->flags &= ~DA_FLAG_OPEN;
 691
 692         cam_periph_unhold(periph);
 693         cam_periph_unlock(periph);
 694
 695         if (error != 0) {
 696                 cam_periph_release(periph);
 697         }
 698         return (error);
 699 }
 700
 701 static int
 702 daclose(struct disk *dp)
 703 {
 704         struct  cam_periph *periph;
 705         struct  da_softc *softc;
 706         int error;
 707
 708         periph = (struct cam_periph *)dp->d_drv1;
 709         if (periph == NULL)
 710                 return (ENXIO);
 711
 712         cam_periph_lock(periph);
 713         if ((error = cam_periph_hold(periph, PRIBIO)) != 0) {
 714                 cam_periph_unlock(periph);
 715                 cam_periph_release(periph);
 716                 return (error);
 717         }
 718
 719         softc = (struct da_softc *)periph->softc;
 720
 721         if ((softc->quirks & DA_Q_NO_SYNC_CACHE) == 0) {
 722                 union   ccb *ccb;
 723
 724                 ccb = cam_periph_getccb(periph, /*priority*/1);
 725
 726                 scsi_synchronize_cache(&ccb->csio,
 727                                        /*retries*/1,
 728                                        /*cbfcnp*/dadone,
 729                                        MSG_SIMPLE_Q_TAG,
 730                                        /*begin_lba*/0,/* Cover the whole disk */
 731                                        /*lb_count*/0,
 732                                        SSD_FULL_SIZE,
 733                                        5 * 60 * 1000);
 734
 735                 cam_periph_runccb(ccb, /*error_routine*/NULL, /*cam_flags*/0,
 736                                   /*sense_flags*/SF_RETRY_UA,
 737                                   softc->disk->d_devstat);
 738
 739                 if ((ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
 740                         if ((ccb->ccb_h.status & CAM_STATUS_MASK) ==
 741                              CAM_SCSI_STATUS_ERROR) {
 742                                 int asc, ascq;
 743                                 int sense_key, error_code;
 744
 745                                 scsi_extract_sense(&ccb->csio.sense_data,
 746                                                    &error_code,
 747                                                    &sense_key,
 748                                                    &asc, &ascq);
 749                                 if (sense_key != SSD_KEY_ILLEGAL_REQUEST)
 750                                         scsi_sense_print(&ccb->csio);
 751                         } else {
 752                                 xpt_print(periph->path, "Synchronize cache "
 753                                     "failed, status == 0x%x, scsi status == "
 754                                     "0x%x\n", ccb->csio.ccb_h.status,
 755                                     ccb->csio.scsi_status);
 756                         }
 757                 }
 758
 759                 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
 760                         cam_release_devq(ccb->ccb_h.path,
 761                                          /*relsim_flags*/0,
 762                                          /*reduction*/0,
 763                                          /*timeout*/0,
 764                                          /*getcount_only*/0);
 765
 766                 xpt_release_ccb(ccb);
 767
 768         }
 769
 770         if ((softc->flags & DA_FLAG_PACK_REMOVABLE) != 0) {
 771                 if ((softc->quirks & DA_Q_NO_PREVENT) == 0)
 772                         daprevent(periph, PR_ALLOW);
 773                 /*
 774                  * If we've got removeable media, mark the blocksize as
 775                  * unavailable, since it could change when new media is
 776                  * inserted.
 777                  */
 778                 softc->disk->d_devstat->flags |= DEVSTAT_BS_UNAVAILABLE;
 779         }
 780
 781         softc->flags &= ~DA_FLAG_OPEN;
 782         cam_periph_unhold(periph);
 783         cam_periph_unlock(periph);
 784         cam_periph_release(periph);
 785         return (0);
 786 }
 787
 788 /*
 789  * Actually translate the requested transfer into one the physical driver
 790  * can understand.  The transfer is described by a buf and will include
 791  * only one physical transfer.
 792  */
 793 static void
 794 dastrategy(struct bio *bp)
 795 {
 796         struct cam_periph *periph;
 797         struct da_softc *softc;
 798
 799         periph = (struct cam_periph *)bp->bio_disk->d_drv1;
 800         if (periph == NULL) {
 801                 biofinish(bp, NULL, ENXIO);
 802                 return;
 803         }
 804         softc = (struct da_softc *)periph->softc;
 805
 806         cam_periph_lock(periph);
 807
 808 #if 0
 809         /*
 810          * check it's not too big a transfer for our adapter
 811          */
 812         scsi_minphys(bp,&sd_switch);
 813 #endif
 814
 815         /*
 816          * Mask interrupts so that the pack cannot be invalidated until
 817          * after we are in the queue.  Otherwise, we might not properly
 818          * clean up one of the buffers.
 819          */
 820
 821         /*
 822          * If the device has been made invalid, error out
 823          */
 824         if ((softc->flags & DA_FLAG_PACK_INVALID)) {
 825                 cam_periph_unlock(periph);
 826                 biofinish(bp, NULL, ENXIO);
 827                 return;
 828         }
 829
 830         /*
 831          * Place it in the queue of disk activities for this disk
 832          */
 833         bioq_disksort(&softc->bio_queue, bp);
 834
 835         /*
 836          * Schedule ourselves for performing the work.
 837          */
 838         xpt_schedule(periph, /* XXX priority */1);
 839         cam_periph_unlock(periph);
 840
 841         return;
 842 }
 843
 844 static int
 845 dadump(void *arg, void *virtual, vm_offset_t physical, off_t offset, size_t length)
 846 {
 847         struct      cam_periph *periph;
 848         struct      da_softc *softc;
 849         u_int       secsize;
 850         struct      ccb_scsiio csio;
 851         struct      disk *dp;
 852
 853         dp = arg;
 854         periph = dp->d_drv1;
 855         if (periph == NULL)
 856                 return (ENXIO);
 857         softc = (struct da_softc *)periph->softc;
 858         cam_periph_lock(periph);
 859         secsize = softc->params.secsize;
 860
 861         if ((softc->flags & DA_FLAG_PACK_INVALID) != 0) {
 862                 cam_periph_unlock(periph);
 863                 return (ENXIO);
 864         }
 865
 866         if (length > 0) {
 867                 periph->flags |= CAM_PERIPH_POLLED;
 868                 xpt_setup_ccb(&csio.ccb_h, periph->path, /*priority*/1);
 869                 csio.ccb_h.ccb_state = DA_CCB_DUMP;
 870                 scsi_read_write(&csio,
 871                                 /*retries*/1,
 872                                 dadone,
 873                                 MSG_ORDERED_Q_TAG,
 874                                 /*read*/FALSE,
 875                                 /*byte2*/0,
 876                                 /*minimum_cmd_size*/ softc->minimum_cmd_size,
 877                                 offset / secsize,
 878                                 length / secsize,
 879                                 /*data_ptr*/(u_int8_t *) virtual,
 880                                 /*dxfer_len*/length,
 881                                 /*sense_len*/SSD_FULL_SIZE,
 882                                 DA_DEFAULT_TIMEOUT * 1000);
 883                 xpt_polled_action((union ccb *)&csio);
 884
 885                 if ((csio.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
 886                         printf("Aborting dump due to I/O error.\n");
 887                         if ((csio.ccb_h.status & CAM_STATUS_MASK) ==
 888                              CAM_SCSI_STATUS_ERROR)
 889                                 scsi_sense_print(&csio);
 890                         else
 891                                 printf("status == 0x%x, scsi status == 0x%x\n",
 892                                        csio.ccb_h.status, csio.scsi_status);
 893                         periph->flags |= CAM_PERIPH_POLLED;
 894                         return(EIO);
 895                 }
 896                 cam_periph_unlock(periph);
 897                 return(0);
 898         }
 899
 900         /*
 901          * Sync the disk cache contents to the physical media.
 902          */
 903         if ((softc->quirks & DA_Q_NO_SYNC_CACHE) == 0) {
 904
 905                 xpt_setup_ccb(&csio.ccb_h, periph->path, /*priority*/1);
 906                 csio.ccb_h.ccb_state = DA_CCB_DUMP;
 907                 scsi_synchronize_cache(&csio,
 908                                        /*retries*/1,
 909                                        /*cbfcnp*/dadone,
 910                                        MSG_SIMPLE_Q_TAG,
 911                                        /*begin_lba*/0,/* Cover the whole disk */
 912                                        /*lb_count*/0,
 913                                        SSD_FULL_SIZE,
 914                                        5 * 60 * 1000);
 915                 xpt_polled_action((union ccb *)&csio);
 916
 917                 if ((csio.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
 918                         if ((csio.ccb_h.status & CAM_STATUS_MASK) ==
 919                              CAM_SCSI_STATUS_ERROR) {
 920                                 int asc, ascq;
 921                                 int sense_key, error_code;
 922
 923                                 scsi_extract_sense(&csio.sense_data,
 924                                                    &error_code,
 925                                                    &sense_key,
 926                                                    &asc, &ascq);
 927                                 if (sense_key != SSD_KEY_ILLEGAL_REQUEST)
 928                                         scsi_sense_print(&csio);
 929                         } else {
 930                                 xpt_print(periph->path, "Synchronize cache "
 931                                     "failed, status == 0x%x, scsi status == "
 932                                     "0x%x\n", csio.ccb_h.status,
 933                                     csio.scsi_status);
 934                         }
 935                 }
 936         }
 937         periph->flags &= ~CAM_PERIPH_POLLED;
 938         cam_periph_unlock(periph);
 939         return (0);
 940 }
 941
 942 static void
 943 dainit(void)
 944 {
 945         cam_status status;
 946
 947         /*
 948          * Install a global async callback.  This callback will
 949          * receive async callbacks like "new device found".
 950          */
 951         status = xpt_register_async(AC_FOUND_DEVICE, daasync, NULL, NULL);
 952
 953         if (status != CAM_REQ_CMP) {
 954                 printf("da: Failed to attach master async callback "
 955                        "due to status 0x%x!\n", status);
 956         } else if (da_send_ordered) {
 957
 958                 /* Register our shutdown event handler */
 959                 if ((EVENTHANDLER_REGISTER(shutdown_post_sync, dashutdown,
 960                                            NULL, SHUTDOWN_PRI_DEFAULT)) == NULL)
 961                     printf("dainit: shutdown event registration failed!\n");
 962         }
 963 }
 964
 965 static void
 966 daoninvalidate(struct cam_periph *periph)
 967 {
 968         struct da_softc *softc;
 969
 970         softc = (struct da_softc *)periph->softc;
 971
 972         /*
 973          * De-register any async callbacks.
 974          */
 975         xpt_register_async(0, daasync, periph, periph->path);
 976
 977         softc->flags |= DA_FLAG_PACK_INVALID;
 978
 979         /*
 980          * Return all queued I/O with ENXIO.
 981          * XXX Handle any transactions queued to the card
 982          *     with XPT_ABORT_CCB.
 983          */
 984         bioq_flush(&softc->bio_queue, NULL, ENXIO);
 985
 986         disk_gone(softc->disk);
 987         xpt_print(periph->path, "lost device\n");
 988 }
 989
 990 static void
 991 dacleanup(struct cam_periph *periph)
 992 {
 993         struct da_softc *softc;
 994
 995         softc = (struct da_softc *)periph->softc;
 996
 997         xpt_print(periph->path, "removing device entry\n");
 998         cam_periph_unlock(periph);
 999
1000         /*
1001          * If we can't free the sysctl tree, oh well...
1002          */
1003         if ((softc->flags & DA_FLAG_SCTX_INIT) != 0
1004             && sysctl_ctx_free(&softc->sysctl_ctx) != 0) {
1005                 xpt_print(periph->path, "can't remove sysctl context\n");
1006         }
1007
1008         disk_destroy(softc->disk);
1009         callout_drain(&softc->sendordered_c);
1010         free(softc, M_DEVBUF);
1011         cam_periph_lock(periph);
1012 }
1013
1014 static void
1015 daasync(void *callback_arg, u_int32_t code,
1016         struct cam_path *path, void *arg)
1017 {
1018         struct cam_periph *periph;
1019
1020         periph = (struct cam_periph *)callback_arg;
1021         switch (code) {
1022         case AC_FOUND_DEVICE:
1023         {
1024                 struct ccb_getdev *cgd;
1025                 cam_status status;
1026
1027                 cgd = (struct ccb_getdev *)arg;
1028                 if (cgd == NULL)
1029                         break;
1030
1031                 if (cgd->protocol != PROTO_SCSI)
1032                         break;
1033
1034                 if (SID_TYPE(&cgd->inq_data) != T_DIRECT
1035                     && SID_TYPE(&cgd->inq_data) != T_RBC
1036                     && SID_TYPE(&cgd->inq_data) != T_OPTICAL)
1037                         break;
1038
1039                 /*
1040                  * Allocate a peripheral instance for
1041                  * this device and start the probe
1042                  * process.
1043                  */
1044                 status = cam_periph_alloc(daregister, daoninvalidate,
1045                                           dacleanup, dastart,
1046                                           "da", CAM_PERIPH_BIO,
1047                                           cgd->ccb_h.path, daasync,
1048                                           AC_FOUND_DEVICE, cgd);
1049
1050                 if (status != CAM_REQ_CMP
1051                  && status != CAM_REQ_INPROG)
1052                         printf("daasync: Unable to attach to new device "
1053                                 "due to status 0x%x\n", status);
1054                 break;
1055         }
1056         case AC_SENT_BDR:
1057         case AC_BUS_RESET:
1058         {
1059                 struct da_softc *softc;
1060                 struct ccb_hdr *ccbh;
1061
1062                 softc = (struct da_softc *)periph->softc;
1063                 /*
1064                  * Don't fail on the expected unit attention
1065                  * that will occur.
1066                  */
1067                 softc->flags |= DA_FLAG_RETRY_UA;
1068                 LIST_FOREACH(ccbh, &softc->pending_ccbs, periph_links.le)
1069                         ccbh->ccb_state |= DA_CCB_RETRY_UA;
1070                 /* FALLTHROUGH*/
1071         }
1072         default:
1073                 cam_periph_async(periph, code, path, arg);
1074                 break;
1075         }
1076 }
1077
1078 static void
1079 dasysctlinit(void *context, int pending)
1080 {
1081         struct cam_periph *periph;
1082         struct da_softc *softc;
1083         char tmpstr[80], tmpstr2[80];
1084
1085         periph = (struct cam_periph *)context;
1086         if (cam_periph_acquire(periph) != CAM_REQ_CMP)
1087                 return;
1088
1089         softc = (struct da_softc *)periph->softc;
1090         snprintf(tmpstr, sizeof(tmpstr), "CAM DA unit %d", periph->unit_number);
1091         snprintf(tmpstr2, sizeof(tmpstr2), "%d", periph->unit_number);
1092
1093         sysctl_ctx_init(&softc->sysctl_ctx);
1094         softc->flags |= DA_FLAG_SCTX_INIT;
1095         softc->sysctl_tree = SYSCTL_ADD_NODE(&softc->sysctl_ctx,
1096                 SYSCTL_STATIC_CHILDREN(_kern_cam_da), OID_AUTO, tmpstr2,
1097                 CTLFLAG_RD, 0, tmpstr);
1098         if (softc->sysctl_tree == NULL) {
1099                 printf("dasysctlinit: unable to allocate sysctl tree\n");
1100                 cam_periph_release(periph);
1101                 return;
1102         }
1103
1104         /*
1105          * Now register the sysctl handler, so the user can the value on
1106          * the fly.
1107          */
1108         SYSCTL_ADD_PROC(&softc->sysctl_ctx,SYSCTL_CHILDREN(softc->sysctl_tree),
1109                 OID_AUTO, "minimum_cmd_size", CTLTYPE_INT | CTLFLAG_RW,
1110                 &softc->minimum_cmd_size, 0, dacmdsizesysctl, "I",
1111                 "Minimum CDB size");
1112
1113         cam_periph_release(periph);
1114 }
1115
1116 static int
1117 dacmdsizesysctl(SYSCTL_HANDLER_ARGS)
1118 {
1119         int error, value;
1120
1121         value = *(int *)arg1;
1122
1123         error = sysctl_handle_int(oidp, &value, 0, req);
1124
1125         if ((error != 0)
1126          || (req->newptr == NULL))
1127                 return (error);
1128
1129         /*
1130          * Acceptable values here are 6, 10, 12 or 16.
1131          */
1132         if (value < 6)
1133                 value = 6;
1134         else if ((value > 6)
1135               && (value <= 10))
1136                 value = 10;
1137         else if ((value > 10)
1138               && (value <= 12))
1139                 value = 12;
1140         else if (value > 12)
1141                 value = 16;
1142
1143         *(int *)arg1 = value;
1144
1145         return (0);
1146 }
1147
1148 static cam_status
1149 daregister(struct cam_periph *periph, void *arg)
1150 {
1151         struct da_softc *softc;
1152         struct ccb_pathinq cpi;
1153         struct ccb_getdev *cgd;
1154         char tmpstr[80];
1155         caddr_t match;
1156
1157         cgd = (struct ccb_getdev *)arg;
1158         if (periph == NULL) {
1159                 printf("daregister: periph was NULL!!\n");
1160                 return(CAM_REQ_CMP_ERR);
1161         }
1162
1163         if (cgd == NULL) {
1164                 printf("daregister: no getdev CCB, can't register device\n");
1165                 return(CAM_REQ_CMP_ERR);
1166         }
1167
1168         softc = (struct da_softc *)malloc(sizeof(*softc), M_DEVBUF,
1169             M_NOWAIT|M_ZERO);
1170
1171         if (softc == NULL) {
1172                 printf("daregister: Unable to probe new device. "
1173                        "Unable to allocate softc\n");
1174                 return(CAM_REQ_CMP_ERR);
1175         }
1176
1177         LIST_INIT(&softc->pending_ccbs);
1178         softc->state = DA_STATE_PROBE;
1179         bioq_init(&softc->bio_queue);
1180         if (SID_IS_REMOVABLE(&cgd->inq_data))
1181                 softc->flags |= DA_FLAG_PACK_REMOVABLE;
1182         if ((cgd->inq_data.flags & SID_CmdQue) != 0)
1183                 softc->flags |= DA_FLAG_TAGGED_QUEUING;
1184
1185         periph->softc = softc;
1186
1187         /*
1188          * See if this device has any quirks.
1189          */
1190         match = cam_quirkmatch((caddr_t)&cgd->inq_data,
1191                                (caddr_t)da_quirk_table,
1192                                sizeof(da_quirk_table)/sizeof(*da_quirk_table),
1193                                sizeof(*da_quirk_table), scsi_inquiry_match);
1194
1195         if (match != NULL)
1196                 softc->quirks = ((struct da_quirk_entry *)match)->quirks;
1197         else
1198                 softc->quirks = DA_Q_NONE;
1199
1200         /* Check if the SIM does not want 6 byte commands */
1201         bzero(&cpi, sizeof(cpi));
1202         xpt_setup_ccb(&cpi.ccb_h, periph->path, /*priority*/1);
1203         cpi.ccb_h.func_code = XPT_PATH_INQ;
1204         xpt_action((union ccb *)&cpi);
1205         if (cpi.ccb_h.status == CAM_REQ_CMP && (cpi.hba_misc & PIM_NO_6_BYTE))
1206                 softc->quirks |= DA_Q_NO_6_BYTE;
1207
1208         TASK_INIT(&softc->sysctl_task, 0, dasysctlinit, periph);
1209
1210         /*
1211          * RBC devices don't have to support READ(6), only READ(10).
1212          */
1213         if (softc->quirks & DA_Q_NO_6_BYTE || SID_TYPE(&cgd->inq_data) == T_RBC)
1214                 softc->minimum_cmd_size = 10;
1215         else
1216                 softc->minimum_cmd_size = 6;
1217
1218         /*
1219          * Load the user's default, if any.
1220          */
1221         snprintf(tmpstr, sizeof(tmpstr), "kern.cam.da.%d.minimum_cmd_size",
1222                  periph->unit_number);
1223         TUNABLE_INT_FETCH(tmpstr, &softc->minimum_cmd_size);
1224
1225         /*
1226          * 6, 10, 12 and 16 are the currently permissible values.
1227          */
1228         if (softc->minimum_cmd_size < 6)
1229                 softc->minimum_cmd_size = 6;
1230         else if ((softc->minimum_cmd_size > 6)
1231               && (softc->minimum_cmd_size <= 10))
1232                 softc->minimum_cmd_size = 10;
1233         else if ((softc->minimum_cmd_size > 10)
1234               && (softc->minimum_cmd_size <= 12))
1235                 softc->minimum_cmd_size = 12;
1236         else if (softc->minimum_cmd_size > 12)
1237                 softc->minimum_cmd_size = 16;
1238
1239         /*
1240          * Register this media as a disk
1241          */
1242
1243         mtx_unlock(periph->sim->mtx);
1244         softc->disk = disk_alloc();
1245         softc->disk->d_open = daopen;
1246         softc->disk->d_close = daclose;
1247         softc->disk->d_strategy = dastrategy;
1248         softc->disk->d_dump = dadump;
1249         softc->disk->d_name = "da";
1250         softc->disk->d_drv1 = periph;
1251         if (cpi.maxio == 0)
1252                 softc->disk->d_maxsize = DFLTPHYS;      /* traditional default */
1253         else if (cpi.maxio > MAXPHYS)
1254                 softc->disk->d_maxsize = MAXPHYS;       /* for safety */
1255         else
1256                 softc->disk->d_maxsize = cpi.maxio;
1257         softc->disk->d_unit = periph->unit_number;
1258         softc->disk->d_flags = 0;
1259         if ((softc->quirks & DA_Q_NO_SYNC_CACHE) == 0)
1260                 softc->disk->d_flags |= DISKFLAG_CANFLUSHCACHE;
1261         disk_create(softc->disk, DISK_VERSION);
1262         mtx_lock(periph->sim->mtx);
1263
1264         /*
1265          * Add async callbacks for bus reset and
1266          * bus device reset calls.  I don't bother
1267          * checking if this fails as, in most cases,
1268          * the system will function just fine without
1269          * them and the only alternative would be to
1270          * not attach the device on failure.
1271          */
1272         xpt_register_async(AC_SENT_BDR | AC_BUS_RESET | AC_LOST_DEVICE,
1273                            daasync, periph, periph->path);
1274
1275         /*
1276          * Take an exclusive refcount on the periph while dastart is called
1277          * to finish the probe.  The reference will be dropped in dadone at
1278          * the end of probe.
1279          */
1280         (void)cam_periph_hold(periph, PRIBIO);
1281         xpt_schedule(periph, /*priority*/5);
1282
1283         /*
1284          * Schedule a periodic event to occasionally send an
1285          * ordered tag to a device.
1286          */
1287         callout_init_mtx(&softc->sendordered_c, periph->sim->mtx, 0);
1288         callout_reset(&softc->sendordered_c,
1289             (DA_DEFAULT_TIMEOUT * hz) / DA_ORDEREDTAG_INTERVAL,
1290             dasendorderedtag, softc);
1291
1292         return(CAM_REQ_CMP);
1293 }
1294
1295 static void
1296 dastart(struct cam_periph *periph, union ccb *start_ccb)
1297 {
1298         struct da_softc *softc;
1299
1300         softc = (struct da_softc *)periph->softc;
1301
1302         switch (softc->state) {
1303         case DA_STATE_NORMAL:
1304         {
1305                 /* Pull a buffer from the queue and get going on it */
1306                 struct bio *bp;
1307
1308                 /*
1309                  * See if there is a buf with work for us to do..
1310                  */
1311                 bp = bioq_first(&softc->bio_queue);
1312                 if (periph->immediate_priority <= periph->pinfo.priority) {
1313                         CAM_DEBUG_PRINT(CAM_DEBUG_SUBTRACE,
1314                                         ("queuing for immediate ccb\n"));
1315                         start_ccb->ccb_h.ccb_state = DA_CCB_WAITING;
1316                         SLIST_INSERT_HEAD(&periph->ccb_list, &start_ccb->ccb_h,
1317                                           periph_links.sle);
1318                         periph->immediate_priority = CAM_PRIORITY_NONE;
1319                         wakeup(&periph->ccb_list);
1320                 } else if (bp == NULL) {
1321                         xpt_release_ccb(start_ccb);
1322                 } else {
1323                         u_int8_t tag_code;
1324
1325                         bioq_remove(&softc->bio_queue, bp);
1326
1327                         if ((softc->flags & DA_FLAG_NEED_OTAG) != 0) {
1328                                 softc->flags &= ~DA_FLAG_NEED_OTAG;
1329                                 softc->ordered_tag_count++;
1330                                 tag_code = MSG_ORDERED_Q_TAG;
1331                         } else {
1332                                 tag_code = MSG_SIMPLE_Q_TAG;
1333                         }
1334                         switch (bp->bio_cmd) {
1335                         case BIO_READ:
1336                         case BIO_WRITE:
1337                                 scsi_read_write(&start_ccb->csio,
1338                                                 /*retries*/da_retry_count,
1339                                                 /*cbfcnp*/dadone,
1340                                                 /*tag_action*/tag_code,
1341                                                 /*read_op*/bp->bio_cmd == BIO_READ,
1342                                                 /*byte2*/0,
1343                                                 softc->minimum_cmd_size,
1344                                                 /*lba*/bp->bio_pblkno,
1345                                                 /*block_count*/bp->bio_bcount /
1346                                                 softc->params.secsize,
1347                                                 /*data_ptr*/ bp->bio_data,
1348                                                 /*dxfer_len*/ bp->bio_bcount,
1349                                                 /*sense_len*/SSD_FULL_SIZE,
1350                                                 /*timeout*/da_default_timeout*1000);
1351                                 break;
1352                         case BIO_FLUSH:
1353                                 scsi_synchronize_cache(&start_ccb->csio,
1354                                                        /*retries*/1,
1355                                                        /*cbfcnp*/dadone,
1356                                                        MSG_SIMPLE_Q_TAG,
1357                                                        /*begin_lba*/0,/* Cover the whole disk */
1358                                                        /*lb_count*/0,
1359                                                        SSD_FULL_SIZE,
1360                                                        /*timeout*/da_default_timeout*1000);
1361                                 break;
1362                         }
1363                         start_ccb->ccb_h.ccb_state = DA_CCB_BUFFER_IO;
1364
1365                         /*
1366                          * Block out any asyncronous callbacks
1367                          * while we touch the pending ccb list.
1368                          */
1369                         LIST_INSERT_HEAD(&softc->pending_ccbs,
1370                                          &start_ccb->ccb_h, periph_links.le);
1371                         softc->outstanding_cmds++;
1372
1373                         /* We expect a unit attention from this device */
1374                         if ((softc->flags & DA_FLAG_RETRY_UA) != 0) {
1375                                 start_ccb->ccb_h.ccb_state |= DA_CCB_RETRY_UA;
1376                                 softc->flags &= ~DA_FLAG_RETRY_UA;
1377                         }
1378
1379                         start_ccb->ccb_h.ccb_bp = bp;
1380                         bp = bioq_first(&softc->bio_queue);
1381
1382                         xpt_action(start_ccb);
1383                 }
1384
1385                 if (bp != NULL) {
1386                         /* Have more work to do, so ensure we stay scheduled */
1387                         xpt_schedule(periph, /* XXX priority */1);
1388                 }
1389                 break;
1390         }
1391         case DA_STATE_PROBE:
1392         {
1393                 struct ccb_scsiio *csio;
1394                 struct scsi_read_capacity_data *rcap;
1395
1396                 rcap = (struct scsi_read_capacity_data *)
1397                     malloc(sizeof(*rcap), M_SCSIDA, M_NOWAIT|M_ZERO);
1398                 if (rcap == NULL) {
1399                         printf("dastart: Couldn't malloc read_capacity data\n");
1400                         /* da_free_periph??? */
1401                         break;
1402                 }
1403                 csio = &start_ccb->csio;
1404                 scsi_read_capacity(csio,
1405                                    /*retries*/4,
1406                                    dadone,
1407                                    MSG_SIMPLE_Q_TAG,
1408                                    rcap,
1409                                    SSD_FULL_SIZE,
1410                                    /*timeout*/5000);
1411                 start_ccb->ccb_h.ccb_bp = NULL;
1412                 start_ccb->ccb_h.ccb_state = DA_CCB_PROBE;
1413                 xpt_action(start_ccb);
1414                 break;
1415         }
1416         case DA_STATE_PROBE2:
1417         {
1418                 struct ccb_scsiio *csio;
1419                 struct scsi_read_capacity_data_long *rcaplong;
1420
1421                 rcaplong = (struct scsi_read_capacity_data_long *)
1422                         malloc(sizeof(*rcaplong), M_SCSIDA, M_NOWAIT|M_ZERO);
1423                 if (rcaplong == NULL) {
1424                         printf("dastart: Couldn't malloc read_capacity data\n");
1425                         /* da_free_periph??? */
1426                         break;
1427                 }
1428                 csio = &start_ccb->csio;
1429                 scsi_read_capacity_16(csio,
1430                                       /*retries*/ 4,
1431                                       /*cbfcnp*/ dadone,
1432                                       /*tag_action*/ MSG_SIMPLE_Q_TAG,
1433                                       /*lba*/ 0,
1434                                       /*reladr*/ 0,
1435                                       /*pmi*/ 0,
1436                                       rcaplong,
1437                                       /*sense_len*/ SSD_FULL_SIZE,
1438                                       /*timeout*/ 60000);
1439                 start_ccb->ccb_h.ccb_bp = NULL;
1440                 start_ccb->ccb_h.ccb_state = DA_CCB_PROBE2;
1441                 xpt_action(start_ccb);
1442                 break;
1443         }
1444         }
1445 }
1446
1447 static int
1448 cmd6workaround(union ccb *ccb)
1449 {
1450         struct scsi_rw_6 cmd6;
1451         struct scsi_rw_10 *cmd10;
1452         struct da_softc *softc;
1453         u_int8_t *cdb;
1454         int frozen;
1455
1456         cdb = ccb->csio.cdb_io.cdb_bytes;
1457
1458         /* Translation only possible if CDB is an array and cmd is R/W6 */
1459         if ((ccb->ccb_h.flags & CAM_CDB_POINTER) != 0 ||
1460             (*cdb != READ_6 && *cdb != WRITE_6))
1461                 return 0;
1462
1463         xpt_print(ccb->ccb_h.path, "READ(6)/WRITE(6) not supported, "
1464             "increasing minimum_cmd_size to 10.\n");
1465         softc = (struct da_softc *)xpt_path_periph(ccb->ccb_h.path)->softc;
1466         softc->minimum_cmd_size = 10;
1467
1468         bcopy(cdb, &cmd6, sizeof(struct scsi_rw_6));
1469         cmd10 = (struct scsi_rw_10 *)cdb;
1470         cmd10->opcode = (cmd6.opcode == READ_6) ? READ_10 : WRITE_10;
1471         cmd10->byte2 = 0;
1472         scsi_ulto4b(scsi_3btoul(cmd6.addr), cmd10->addr);
1473         cmd10->reserved = 0;
1474         scsi_ulto2b(cmd6.length, cmd10->length);
1475         cmd10->control = cmd6.control;
1476         ccb->csio.cdb_len = sizeof(*cmd10);
1477
1478         /* Requeue request, unfreezing queue if necessary */
1479         frozen = (ccb->ccb_h.status & CAM_DEV_QFRZN) != 0;
1480         ccb->ccb_h.status = CAM_REQUEUE_REQ;
1481         xpt_action(ccb);
1482         if (frozen) {
1483                 cam_release_devq(ccb->ccb_h.path,
1484                                  /*relsim_flags*/0,
1485                                  /*reduction*/0,
1486                                  /*timeout*/0,
1487                                  /*getcount_only*/0);
1488         }
1489         return (ERESTART);
1490 }
1491
1492 static void
1493 dadone(struct cam_periph *periph, union ccb *done_ccb)
1494 {
1495         struct da_softc *softc;
1496         struct ccb_scsiio *csio;
1497
1498         softc = (struct da_softc *)periph->softc;
1499         csio = &done_ccb->csio;
1500         switch (csio->ccb_h.ccb_state & DA_CCB_TYPE_MASK) {
1501         case DA_CCB_BUFFER_IO:
1502         {
1503                 struct bio *bp;
1504
1505                 bp = (struct bio *)done_ccb->ccb_h.ccb_bp;
1506                 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1507                         int error;
1508                         int sf;
1509
1510                         if ((csio->ccb_h.ccb_state & DA_CCB_RETRY_UA) != 0)
1511                                 sf = SF_RETRY_UA;
1512                         else
1513                                 sf = 0;
1514
1515                         error = daerror(done_ccb, CAM_RETRY_SELTO, sf);
1516                         if (error == ERESTART) {
1517                                 /*
1518                                  * A retry was scheuled, so
1519                                  * just return.
1520                                  */
1521                                 return;
1522                         }
1523                         if (error != 0) {
1524
1525                                 if (error == ENXIO) {
1526                                         /*
1527                                          * Catastrophic error.  Mark our pack as
1528                                          * invalid.
1529                                          */
1530                                         /*
1531                                          * XXX See if this is really a media
1532                                          * XXX change first?
1533                                          */
1534                                         xpt_print(periph->path,
1535                                             "Invalidating pack\n");
1536                                         softc->flags |= DA_FLAG_PACK_INVALID;
1537                                 }
1538
1539                                 /*
1540                                  * return all queued I/O with EIO, so that
1541                                  * the client can retry these I/Os in the
1542                                  * proper order should it attempt to recover.
1543                                  */
1544                                 bioq_flush(&softc->bio_queue, NULL, EIO);
1545                                 bp->bio_error = error;
1546                                 bp->bio_resid = bp->bio_bcount;
1547                                 bp->bio_flags |= BIO_ERROR;
1548                         } else {
1549                                 bp->bio_resid = csio->resid;
1550                                 bp->bio_error = 0;
1551                                 if (bp->bio_resid != 0)
1552                                         bp->bio_flags |= BIO_ERROR;
1553                         }
1554                         if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
1555                                 cam_release_devq(done_ccb->ccb_h.path,
1556                                                  /*relsim_flags*/0,
1557                                                  /*reduction*/0,
1558                                                  /*timeout*/0,
1559                                                  /*getcount_only*/0);
1560                 } else {
1561                         if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
1562                                 panic("REQ_CMP with QFRZN");
1563                         bp->bio_resid = csio->resid;
1564                         if (csio->resid > 0)
1565                                 bp->bio_flags |= BIO_ERROR;
1566                 }
1567
1568                 /*
1569                  * Block out any asyncronous callbacks
1570                  * while we touch the pending ccb list.
1571                  */
1572                 LIST_REMOVE(&done_ccb->ccb_h, periph_links.le);
1573                 softc->outstanding_cmds--;
1574                 if (softc->outstanding_cmds == 0)
1575                         softc->flags |= DA_FLAG_WENT_IDLE;
1576
1577                 biodone(bp);
1578                 break;
1579         }
1580         case DA_CCB_PROBE:
1581         case DA_CCB_PROBE2:
1582         {
1583                 struct     scsi_read_capacity_data *rdcap;
1584                 struct     scsi_read_capacity_data_long *rcaplong;
1585                 char       announce_buf[80];
1586
1587                 rdcap = NULL;
1588                 rcaplong = NULL;
1589                 if (softc->state == DA_STATE_PROBE)
1590                         rdcap =(struct scsi_read_capacity_data *)csio->data_ptr;
1591                 else
1592                         rcaplong = (struct scsi_read_capacity_data_long *)
1593                                 csio->data_ptr;
1594
1595                 if ((csio->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP) {
1596                         struct disk_params *dp;
1597                         uint32_t block_size;
1598                         uint64_t maxsector;
1599
1600                         if (softc->state == DA_STATE_PROBE) {
1601                                 block_size = scsi_4btoul(rdcap->length);
1602                                 maxsector = scsi_4btoul(rdcap->addr);
1603
1604                                 /*
1605                                  * According to SBC-2, if the standard 10
1606                                  * byte READ CAPACITY command returns 2^32,
1607                                  * we should issue the 16 byte version of
1608                                  * the command, since the device in question
1609                                  * has more sectors than can be represented
1610                                  * with the short version of the command.
1611                                  */
1612                                 if (maxsector == 0xffffffff) {
1613                                         softc->state = DA_STATE_PROBE2;
1614                                         free(rdcap, M_SCSIDA);
1615                                         xpt_release_ccb(done_ccb);
1616                                         xpt_schedule(periph, /*priority*/5);
1617                                         return;
1618                                 }
1619                         } else {
1620                                 block_size = scsi_4btoul(rcaplong->length);
1621                                 maxsector = scsi_8btou64(rcaplong->addr);
1622                         }
1623
1624                         /*
1625                          * Because GEOM code just will panic us if we
1626                          * give them an 'illegal' value we'll avoid that
1627                          * here.
1628                          */
1629                         if (block_size >= MAXPHYS || block_size == 0) {
1630                                 xpt_print(periph->path,
1631                                     "unsupportable block size %ju\n",
1632                                     (uintmax_t) block_size);
1633                                 announce_buf[0] = '\0';
1634                                 cam_periph_invalidate(periph);
1635                         } else {
1636                                 dasetgeom(periph, block_size, maxsector);
1637                                 dp = &softc->params;
1638                                 snprintf(announce_buf, sizeof(announce_buf),
1639                                         "%juMB (%ju %u byte sectors: %dH %dS/T "
1640                                         "%dC)", (uintmax_t)
1641                                         (((uintmax_t)dp->secsize *
1642                                         dp->sectors) / (1024*1024)),
1643                                         (uintmax_t)dp->sectors,
1644                                         dp->secsize, dp->heads,
1645                                         dp->secs_per_track, dp->cylinders);
1646                         }
1647                 } else {
1648                         int     error;
1649
1650                         announce_buf[0] = '\0';
1651
1652                         /*
1653                          * Retry any UNIT ATTENTION type errors.  They
1654                          * are expected at boot.
1655                          */
1656                         error = daerror(done_ccb, CAM_RETRY_SELTO,
1657                                         SF_RETRY_UA|SF_NO_PRINT);
1658                         if (error == ERESTART) {
1659                                 /*
1660                                  * A retry was scheuled, so
1661                                  * just return.
1662                                  */
1663                                 return;
1664                         } else if (error != 0) {
1665                                 struct scsi_sense_data *sense;
1666                                 int asc, ascq;
1667                                 int sense_key, error_code;
1668                                 int have_sense;
1669                                 cam_status status;
1670                                 struct ccb_getdev cgd;
1671
1672                                 /* Don't wedge this device's queue */
1673                                 status = done_ccb->ccb_h.status;
1674                                 if ((status & CAM_DEV_QFRZN) != 0)
1675                                         cam_release_devq(done_ccb->ccb_h.path,
1676                                                          /*relsim_flags*/0,
1677                                                          /*reduction*/0,
1678                                                          /*timeout*/0,
1679                                                          /*getcount_only*/0);
1680
1681
1682                                 xpt_setup_ccb(&cgd.ccb_h,
1683                                               done_ccb->ccb_h.path,
1684                                               /* priority */ 1);
1685                                 cgd.ccb_h.func_code = XPT_GDEV_TYPE;
1686                                 xpt_action((union ccb *)&cgd);
1687
1688                                 if (((csio->ccb_h.flags & CAM_SENSE_PHYS) != 0)
1689                                  || ((csio->ccb_h.flags & CAM_SENSE_PTR) != 0)
1690                                  || ((status & CAM_AUTOSNS_VALID) == 0))
1691                                         have_sense = FALSE;
1692                                 else
1693                                         have_sense = TRUE;
1694
1695                                 if (have_sense) {
1696                                         sense = &csio->sense_data;
1697                                         scsi_extract_sense(sense, &error_code,
1698                                                            &sense_key,
1699                                                            &asc, &ascq);
1700                                 }
1701                                 /*
1702                                  * Attach to anything that claims to be a
1703                                  * direct access or optical disk device,
1704                                  * as long as it doesn't return a "Logical
1705                                  * unit not supported" (0x25) error.
1706                                  */
1707                                 if ((have_sense) && (asc != 0x25)
1708                                  && (error_code == SSD_CURRENT_ERROR)) {
1709                                         const char *sense_key_desc;
1710                                         const char *asc_desc;
1711
1712                                         scsi_sense_desc(sense_key, asc, ascq,
1713                                                         &cgd.inq_data,
1714                                                         &sense_key_desc,
1715                                                         &asc_desc);
1716                                         snprintf(announce_buf,
1717                                             sizeof(announce_buf),
1718                                                 "Attempt to query device "
1719                                                 "size failed: %s, %s",
1720                                                 sense_key_desc,
1721                                                 asc_desc);
1722                                 } else {
1723                                         if (have_sense)
1724                                                 scsi_sense_print(
1725                                                         &done_ccb->csio);
1726                                         else {
1727                                                 xpt_print(periph->path,
1728                                                     "got CAM status %#x\n",
1729                                                     done_ccb->ccb_h.status);
1730                                         }
1731
1732                                         xpt_print(periph->path, "fatal error, "
1733                                             "failed to attach to device\n");
1734
1735                                         /*
1736                                          * Free up resources.
1737                                          */
1738                                         cam_periph_invalidate(periph);
1739                                 }
1740                         }
1741                 }
1742                 free(csio->data_ptr, M_SCSIDA);
1743                 if (announce_buf[0] != '\0') {
1744                         xpt_announce_periph(periph, announce_buf);
1745                         /*
1746                          * Create our sysctl variables, now that we know
1747                          * we have successfully attached.
1748                          */
1749                         taskqueue_enqueue(taskqueue_thread,&softc->sysctl_task);
1750                 }
1751                 softc->state = DA_STATE_NORMAL;
1752                 /*
1753                  * Since our peripheral may be invalidated by an error
1754                  * above or an external event, we must release our CCB
1755                  * before releasing the probe lock on the peripheral.
1756                  * The peripheral will only go away once the last lock
1757                  * is removed, and we need it around for the CCB release
1758                  * operation.
1759                  */
1760                 xpt_release_ccb(done_ccb);
1761                 cam_periph_unhold(periph);
1762                 return;
1763         }
1764         case DA_CCB_WAITING:
1765         {
1766                 /* Caller will release the CCB */
1767                 wakeup(&done_ccb->ccb_h.cbfcnp);
1768                 return;
1769         }
1770         case DA_CCB_DUMP:
1771                 /* No-op.  We're polling */
1772                 return;
1773         default:
1774                 break;
1775         }
1776         xpt_release_ccb(done_ccb);
1777 }
1778
1779 static int
1780 daerror(union ccb *ccb, u_int32_t cam_flags, u_int32_t sense_flags)
1781 {
1782         struct da_softc   *softc;
1783         struct cam_periph *periph;
1784         int error;
1785
1786         periph = xpt_path_periph(ccb->ccb_h.path);
1787         softc = (struct da_softc *)periph->softc;
1788
1789         /*
1790          * Automatically detect devices that do not support
1791          * READ(6)/WRITE(6) and upgrade to using 10 byte cdbs.
1792          */
1793         error = 0;
1794         if ((ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_INVALID) {
1795                 error = cmd6workaround(ccb);
1796         } else if (((ccb->ccb_h.status & CAM_STATUS_MASK) ==
1797                    CAM_SCSI_STATUS_ERROR)
1798          && (ccb->ccb_h.status & CAM_AUTOSNS_VALID)
1799          && (ccb->csio.scsi_status == SCSI_STATUS_CHECK_COND)
1800          && ((ccb->ccb_h.flags & CAM_SENSE_PHYS) == 0)
1801          && ((ccb->ccb_h.flags & CAM_SENSE_PTR) == 0)) {
1802                 int sense_key, error_code, asc, ascq;
1803
1804                 scsi_extract_sense(&ccb->csio.sense_data,
1805                                    &error_code, &sense_key, &asc, &ascq);
1806                 if (sense_key == SSD_KEY_ILLEGAL_REQUEST)
1807                         error = cmd6workaround(ccb);
1808         }
1809         if (error == ERESTART)
1810                 return (ERESTART);
1811
1812         /*
1813          * XXX
1814          * Until we have a better way of doing pack validation,
1815          * don't treat UAs as errors.
1816          */
1817         sense_flags |= SF_RETRY_UA;
1818         return(cam_periph_error(ccb, cam_flags, sense_flags,
1819                                 &softc->saved_ccb));
1820 }
1821
1822 static void
1823 daprevent(struct cam_periph *periph, int action)
1824 {
1825         struct  da_softc *softc;
1826         union   ccb *ccb;
1827         int     error;
1828
1829         softc = (struct da_softc *)periph->softc;
1830
1831         if (((action == PR_ALLOW)
1832           && (softc->flags & DA_FLAG_PACK_LOCKED) == 0)
1833          || ((action == PR_PREVENT)
1834           && (softc->flags & DA_FLAG_PACK_LOCKED) != 0)) {
1835                 return;
1836         }
1837
1838         ccb = cam_periph_getccb(periph, /*priority*/1);
1839
1840         scsi_prevent(&ccb->csio,
1841                      /*retries*/1,
1842                      /*cbcfp*/dadone,
1843                      MSG_SIMPLE_Q_TAG,
1844                      action,
1845                      SSD_FULL_SIZE,
1846                      5000);
1847
1848         error = cam_periph_runccb(ccb, /*error_routine*/NULL, CAM_RETRY_SELTO,
1849                                   SF_RETRY_UA, softc->disk->d_devstat);
1850
1851         if (error == 0) {
1852                 if (action == PR_ALLOW)
1853                         softc->flags &= ~DA_FLAG_PACK_LOCKED;
1854                 else
1855                         softc->flags |= DA_FLAG_PACK_LOCKED;
1856         }
1857
1858         xpt_release_ccb(ccb);
1859 }
1860
1861 static int
1862 dagetcapacity(struct cam_periph *periph)
1863 {
1864         struct da_softc *softc;
1865         union ccb *ccb;
1866         struct scsi_read_capacity_data *rcap;
1867         struct scsi_read_capacity_data_long *rcaplong;
1868         uint32_t block_len;
1869         uint64_t maxsector;
1870         int error;
1871         u_int32_t sense_flags;
1872
1873         softc = (struct da_softc *)periph->softc;
1874         block_len = 0;
1875         maxsector = 0;
1876         error = 0;
1877         sense_flags = SF_RETRY_UA;
1878         if (softc->flags & DA_FLAG_PACK_REMOVABLE)
1879                 sense_flags |= SF_NO_PRINT;
1880
1881         /* Do a read capacity */
1882         rcap = (struct scsi_read_capacity_data *)malloc(sizeof(*rcaplong),
1883                                                         M_SCSIDA,
1884                                                         M_NOWAIT);
1885         if (rcap == NULL)
1886                 return (ENOMEM);
1887
1888         ccb = cam_periph_getccb(periph, /*priority*/1);
1889         scsi_read_capacity(&ccb->csio,
1890                            /*retries*/4,
1891                            /*cbfncp*/dadone,
1892                            MSG_SIMPLE_Q_TAG,
1893                            rcap,
1894                            SSD_FULL_SIZE,
1895                            /*timeout*/60000);
1896         ccb->ccb_h.ccb_bp = NULL;
1897
1898         error = cam_periph_runccb(ccb, daerror,
1899                                   /*cam_flags*/CAM_RETRY_SELTO,
1900                                   sense_flags,
1901                                   softc->disk->d_devstat);
1902
1903         if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
1904                 cam_release_devq(ccb->ccb_h.path,
1905                                  /*relsim_flags*/0,
1906                                  /*reduction*/0,
1907                                  /*timeout*/0,
1908                                  /*getcount_only*/0);
1909
1910         if (error == 0) {
1911                 block_len = scsi_4btoul(rcap->length);
1912                 maxsector = scsi_4btoul(rcap->addr);
1913
1914                 if (maxsector != 0xffffffff)
1915                         goto done;
1916         } else
1917                 goto done;
1918
1919         rcaplong = (struct scsi_read_capacity_data_long *)rcap;
1920
1921         scsi_read_capacity_16(&ccb->csio,
1922                               /*retries*/ 4,
1923                               /*cbfcnp*/ dadone,
1924                               /*tag_action*/ MSG_SIMPLE_Q_TAG,
1925                               /*lba*/ 0,
1926                               /*reladr*/ 0,
1927                               /*pmi*/ 0,
1928                               rcaplong,
1929                               /*sense_len*/ SSD_FULL_SIZE,
1930                               /*timeout*/ 60000);
1931         ccb->ccb_h.ccb_bp = NULL;
1932
1933         error = cam_periph_runccb(ccb, daerror,
1934                                   /*cam_flags*/CAM_RETRY_SELTO,
1935                                   sense_flags,
1936                                   softc->disk->d_devstat);
1937
1938         if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
1939                 cam_release_devq(ccb->ccb_h.path,
1940                                  /*relsim_flags*/0,
1941                                  /*reduction*/0,
1942                                  /*timeout*/0,
1943                                  /*getcount_only*/0);
1944
1945         if (error == 0) {
1946                 block_len = scsi_4btoul(rcaplong->length);
1947                 maxsector = scsi_8btou64(rcaplong->addr);
1948         }
1949
1950 done:
1951
1952         if (error == 0)
1953                 dasetgeom(periph, block_len, maxsector);
1954
1955         xpt_release_ccb(ccb);
1956
1957         free(rcap, M_SCSIDA);
1958
1959         return (error);
1960 }
1961
1962 static void
1963 dasetgeom(struct cam_periph *periph, uint32_t block_len, uint64_t maxsector)
1964 {
1965         struct ccb_calc_geometry ccg;
1966         struct da_softc *softc;
1967         struct disk_params *dp;
1968
1969         softc = (struct da_softc *)periph->softc;
1970
1971         dp = &softc->params;
1972         dp->secsize = block_len;
1973         dp->sectors = maxsector + 1;
1974         /*
1975          * Have the controller provide us with a geometry
1976          * for this disk.  The only time the geometry
1977          * matters is when we boot and the controller
1978          * is the only one knowledgeable enough to come
1979          * up with something that will make this a bootable
1980          * device.
1981          */
1982         xpt_setup_ccb(&ccg.ccb_h, periph->path, /*priority*/1);
1983         ccg.ccb_h.func_code = XPT_CALC_GEOMETRY;
1984         ccg.block_size = dp->secsize;
1985         ccg.volume_size = dp->sectors;
1986         ccg.heads = 0;
1987         ccg.secs_per_track = 0;
1988         ccg.cylinders = 0;
1989         xpt_action((union ccb*)&ccg);
1990         if ((ccg.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1991                 /*
1992                  * We don't know what went wrong here- but just pick
1993                  * a geometry so we don't have nasty things like divide
1994                  * by zero.
1995                  */
1996                 dp->heads = 255;
1997                 dp->secs_per_track = 255;
1998                 dp->cylinders = dp->sectors / (255 * 255);
1999                 if (dp->cylinders == 0) {
2000                         dp->cylinders = 1;
2001                 }
2002         } else {
2003                 dp->heads = ccg.heads;
2004                 dp->secs_per_track = ccg.secs_per_track;
2005                 dp->cylinders = ccg.cylinders;
2006         }
2007 }
2008
2009 static void
2010 dasendorderedtag(void *arg)
2011 {
2012         struct da_softc *softc = arg;
2013
2014         if (da_send_ordered) {
2015                 if ((softc->ordered_tag_count == 0)
2016                  && ((softc->flags & DA_FLAG_WENT_IDLE) == 0)) {
2017                         softc->flags |= DA_FLAG_NEED_OTAG;
2018                 }
2019                 if (softc->outstanding_cmds > 0)
2020                         softc->flags &= ~DA_FLAG_WENT_IDLE;
2021
2022                 softc->ordered_tag_count = 0;
2023         }
2024         /* Queue us up again */
2025         callout_reset(&softc->sendordered_c,
2026             (DA_DEFAULT_TIMEOUT * hz) / DA_ORDEREDTAG_INTERVAL,
2027             dasendorderedtag, softc);
2028 }
2029
2030 /*
2031  * Step through all DA peripheral drivers, and if the device is still open,
2032  * sync the disk cache to physical media.
2033  */
2034 static void
2035 dashutdown(void * arg, int howto)
2036 {
2037         struct cam_periph *periph;
2038         struct da_softc *softc;
2039
2040         TAILQ_FOREACH(periph, &dadriver.units, unit_links) {
2041                 union ccb ccb;
2042
2043                 cam_periph_lock(periph);
2044                 softc = (struct da_softc *)periph->softc;
2045
2046                 /*
2047                  * We only sync the cache if the drive is still open, and
2048                  * if the drive is capable of it..
2049                  */
2050                 if (((softc->flags & DA_FLAG_OPEN) == 0)
2051                  || (softc->quirks & DA_Q_NO_SYNC_CACHE)) {
2052                         cam_periph_unlock(periph);
2053                         continue;
2054                 }
2055
2056                 xpt_setup_ccb(&ccb.ccb_h, periph->path, /*priority*/1);
2057
2058                 ccb.ccb_h.ccb_state = DA_CCB_DUMP;
2059                 scsi_synchronize_cache(&ccb.csio,
2060                                        /*retries*/1,
2061                                        /*cbfcnp*/dadone,
2062                                        MSG_SIMPLE_Q_TAG,
2063                                        /*begin_lba*/0, /* whole disk */
2064                                        /*lb_count*/0,
2065                                        SSD_FULL_SIZE,
2066                                        60 * 60 * 1000);
2067
2068                 xpt_polled_action(&ccb);
2069
2070                 if ((ccb.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
2071                         if (((ccb.ccb_h.status & CAM_STATUS_MASK) ==
2072                              CAM_SCSI_STATUS_ERROR)
2073                          && (ccb.csio.scsi_status == SCSI_STATUS_CHECK_COND)){
2074                                 int error_code, sense_key, asc, ascq;
2075
2076                                 scsi_extract_sense(&ccb.csio.sense_data,
2077                                                    &error_code, &sense_key,
2078                                                    &asc, &ascq);
2079
2080                                 if (sense_key != SSD_KEY_ILLEGAL_REQUEST)
2081                                         scsi_sense_print(&ccb.csio);
2082                         } else {
2083                                 xpt_print(periph->path, "Synchronize "
2084                                     "cache failed, status == 0x%x, scsi status "
2085                                     "== 0x%x\n", ccb.ccb_h.status,
2086                                     ccb.csio.scsi_status);
2087                         }
2088                 }
2089
2090                 if ((ccb.ccb_h.status & CAM_DEV_QFRZN) != 0)
2091                         cam_release_devq(ccb.ccb_h.path,
2092                                          /*relsim_flags*/0,
2093                                          /*reduction*/0,
2094                                          /*timeout*/0,
2095                                          /*getcount_only*/0);
2096                 cam_periph_unlock(periph);
2097         }
2098 }
2099
2100 #else /* !_KERNEL */
2101
2102 /*
2103  * XXX This is only left out of the kernel build to silence warnings.  If,
2104  * for some reason this function is used in the kernel, the ifdefs should
2105  * be moved so it is included both in the kernel and userland.
2106  */
2107 void
2108 scsi_format_unit(struct ccb_scsiio *csio, u_int32_t retries,
2109                  void (*cbfcnp)(struct cam_periph *, union ccb *),
2110                  u_int8_t tag_action, u_int8_t byte2, u_int16_t ileave,
2111                  u_int8_t *data_ptr, u_int32_t dxfer_len, u_int8_t sense_len,
2112                  u_int32_t timeout)
2113 {
2114         struct scsi_format_unit *scsi_cmd;
2115
2116         scsi_cmd = (struct scsi_format_unit *)&csio->cdb_io.cdb_bytes;
2117         scsi_cmd->opcode = FORMAT_UNIT;
2118         scsi_cmd->byte2 = byte2;
2119         scsi_ulto2b(ileave, scsi_cmd->interleave);
2120
2121         cam_fill_csio(csio,
2122                       retries,
2123                       cbfcnp,
2124                       /*flags*/ (dxfer_len > 0) ? CAM_DIR_OUT : CAM_DIR_NONE,
2125                       tag_action,
2126                       data_ptr,
2127                       dxfer_len,
2128                       sense_len,
2129                       sizeof(*scsi_cmd),
2130                       timeout);
2131 }
2132
2133 #endif /* _KERNEL */