sys/bus/cam/scsi/scsi_da.c

   1 /*
   2  * Implementation of SCSI Direct Access Peripheral driver for CAM.
   3  *
   4  * Copyright (c) 1997 Justin T. Gibbs.
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions, and the following disclaimer,
  12  *    without modification, immediately at the beginning of the file.
  13  * 2. The name of the author may not be used to endorse or promote products
  14  *    derived from this software without specific prior written permission.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  19  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
  20  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  26  * SUCH DAMAGE.
  27  *
  28  * $FreeBSD: src/sys/cam/scsi/scsi_da.c,v 1.42.2.46 2003/10/21 22:18:19 thomas Exp $
  29  * $DragonFly: src/sys/bus/cam/scsi/scsi_da.c,v 1.59 2008/08/29 20:08:40 dillon Exp $
  30  */
  31
  32 #include <sys/param.h>
  33 #include <sys/bootmaj.h>
  34
  35 #ifdef _KERNEL
  36 #include <sys/systm.h>
  37 #include <sys/kernel.h>
  38 #include <sys/buf.h>
  39 #include <sys/sysctl.h>
  40 #include <sys/taskqueue.h>
  41 #include <sys/lock.h>
  42 #include <sys/conf.h>
  43 #include <sys/devicestat.h>
  44 #include <sys/disk.h>
  45 #include <sys/dtype.h>
  46 #include <sys/eventhandler.h>
  47 #include <sys/malloc.h>
  48 #include <sys/cons.h>
  49 #include <sys/proc.h>
  50 #include <sys/buf2.h>
  51 #include <sys/thread2.h>
  52 #endif /* _KERNEL */
  53
  54 #ifdef _KERNEL
  55 #include <vm/pmap.h>
  56 #endif
  57
  58 #ifndef _KERNEL
  59 #include <stdio.h>
  60 #include <string.h>
  61 #endif /* _KERNEL */
  62
  63 #include "../cam.h"
  64 #include "../cam_ccb.h"
  65 #include "../cam_extend.h"
  66 #include "../cam_periph.h"
  67 #include "../cam_xpt_periph.h"
  68 #include "../cam_sim.h"
  69
  70 #include "scsi_message.h"
  71
  72 #ifndef _KERNEL
  73 #include "scsi_da.h"
  74 #endif /* !_KERNEL */
  75
  76 #ifdef _KERNEL
  77 typedef enum {
  78         DA_STATE_PROBE,
  79         DA_STATE_PROBE2,
  80         DA_STATE_NORMAL
  81 } da_state;
  82
  83 typedef enum {
  84         DA_FLAG_PACK_INVALID    = 0x001,
  85         DA_FLAG_NEW_PACK        = 0x002,
  86         DA_FLAG_PACK_LOCKED     = 0x004,
  87         DA_FLAG_PACK_REMOVABLE  = 0x008,
  88         DA_FLAG_TAGGED_QUEUING  = 0x010,
  89         DA_FLAG_NEED_OTAG       = 0x020,
  90         DA_FLAG_WENT_IDLE       = 0x040,
  91         DA_FLAG_RETRY_UA        = 0x080,
  92         DA_FLAG_OPEN            = 0x100,
  93         DA_FLAG_SCTX_INIT       = 0x200
  94 } da_flags;
  95
  96 typedef enum {
  97         DA_Q_NONE               = 0x00,
  98         DA_Q_NO_SYNC_CACHE      = 0x01,
  99         DA_Q_NO_6_BYTE          = 0x02,
 100         DA_Q_NO_PREVENT         = 0x04
 101 } da_quirks;
 102
 103 typedef enum {
 104         DA_CCB_PROBE            = 0x01,
 105         DA_CCB_PROBE2           = 0x02,
 106         DA_CCB_BUFFER_IO        = 0x03,
 107         DA_CCB_WAITING          = 0x04,
 108         DA_CCB_DUMP             = 0x05,
 109         DA_CCB_TYPE_MASK        = 0x0F,
 110         DA_CCB_RETRY_UA         = 0x10
 111 } da_ccb_state;
 112
 113 /* Offsets into our private area for storing information */
 114 #define ccb_state       ppriv_field0
 115 #define ccb_bio         ppriv_ptr1
 116
 117 struct disk_params {
 118         u_int8_t  heads;
 119         u_int32_t cylinders;
 120         u_int8_t  secs_per_track;
 121         u_int32_t secsize;      /* Number of bytes/sector */
 122         u_int64_t sectors;      /* total number sectors */
 123 };
 124
 125 struct da_softc {
 126         struct   bio_queue_head bio_queue;
 127         struct   devstat device_stats;
 128         SLIST_ENTRY(da_softc) links;
 129         LIST_HEAD(, ccb_hdr) pending_ccbs;
 130         da_state state;
 131         da_flags flags;
 132         da_quirks quirks;
 133         int      minimum_cmd_size;
 134         int      ordered_tag_count;
 135         int      outstanding_cmds;
 136         struct   disk_params params;
 137         struct   disk disk;
 138         union    ccb saved_ccb;
 139         struct task             sysctl_task;
 140         struct sysctl_ctx_list  sysctl_ctx;
 141         struct sysctl_oid       *sysctl_tree;
 142         struct callout          sendordered_c;
 143 };
 144
 145 struct da_quirk_entry {
 146         struct scsi_inquiry_pattern inq_pat;
 147         da_quirks quirks;
 148 };
 149
 150 static const char quantum[] = "QUANTUM";
 151 static const char microp[] = "MICROP";
 152
 153 static struct da_quirk_entry da_quirk_table[] =
 154 {
 155         /* SPI, FC devices */
 156         {
 157                 /*
 158                  * Fujitsu M2513A MO drives.
 159                  * Tested devices: M2513A2 firmware versions 1200 & 1300.
 160                  * (dip switch selects whether T_DIRECT or T_OPTICAL device)
 161                  * Reported by: W.Scholten <whs@xs4all.nl>
 162                  */
 163                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "FUJITSU", "M2513A", "*"},
 164                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 165         },
 166         {
 167                 /* See above. */
 168                 {T_OPTICAL, SIP_MEDIA_REMOVABLE, "FUJITSU", "M2513A", "*"},
 169                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 170         },
 171         {
 172                 /*
 173                  * This particular Fujitsu drive doesn't like the
 174                  * synchronize cache command.
 175                  * Reported by: Tom Jackson <toj@gorilla.net>
 176                  */
 177                 {T_DIRECT, SIP_MEDIA_FIXED, "FUJITSU", "M2954*", "*"},
 178                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 179         },
 180         {
 181                 /*
 182                  * This drive doesn't like the synchronize cache command
 183                  * either.  Reported by: Matthew Jacob <mjacob@feral.com>
 184                  * in NetBSD PR kern/6027, August 24, 1998.
 185                  */
 186                 {T_DIRECT, SIP_MEDIA_FIXED, microp, "2217*", "*"},
 187                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 188         },
 189         {
 190                 /*
 191                  * This drive doesn't like the synchronize cache command
 192                  * either.  Reported by: Hellmuth Michaelis (hm@kts.org)
 193                  * (PR 8882).
 194                  */
 195                 {T_DIRECT, SIP_MEDIA_FIXED, microp, "2112*", "*"},
 196                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 197         },
 198         {
 199                 /*
 200                  * Doesn't like the synchronize cache command.
 201                  * Reported by: Blaz Zupan <blaz@gold.amis.net>
 202                  */
 203                 {T_DIRECT, SIP_MEDIA_FIXED, "NEC", "D3847*", "*"},
 204                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 205         },
 206         {
 207                 /*
 208                  * Doesn't like the synchronize cache command.
 209                  * Reported by: Blaz Zupan <blaz@gold.amis.net>
 210                  */
 211                 {T_DIRECT, SIP_MEDIA_FIXED, quantum, "MAVERICK 540S", "*"},
 212                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 213         },
 214         {
 215                 /*
 216                  * Doesn't like the synchronize cache command.
 217                  */
 218                 {T_DIRECT, SIP_MEDIA_FIXED, quantum, "LPS525S", "*"},
 219                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 220         },
 221         {
 222                 /*
 223                  * Doesn't like the synchronize cache command.
 224                  * Reported by: walter@pelissero.de
 225                  */
 226                 {T_DIRECT, SIP_MEDIA_FIXED, quantum, "LPS540S", "*"},
 227                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 228         },
 229         {
 230                 /*
 231                  * Doesn't work correctly with 6 byte reads/writes.
 232                  * Returns illegal request, and points to byte 9 of the
 233                  * 6-byte CDB.
 234                  * Reported by:  Adam McDougall <bsdx@spawnet.com>
 235                  */
 236                 {T_DIRECT, SIP_MEDIA_FIXED, quantum, "VIKING 4*", "*"},
 237                 /*quirks*/ DA_Q_NO_6_BYTE
 238         },
 239         {
 240                 /* See above. */
 241                 {T_DIRECT, SIP_MEDIA_FIXED, quantum, "VIKING 2*", "*"},
 242                 /*quirks*/ DA_Q_NO_6_BYTE
 243         },
 244         {
 245                 /*
 246                  * Doesn't like the synchronize cache command.
 247                  * Reported by: walter@pelissero.de
 248                  */
 249                 {T_DIRECT, SIP_MEDIA_FIXED, "CONNER", "CP3500*", "*"},
 250                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 251         },
 252         {
 253                 /*
 254                  * The CISS RAID controllers do not support SYNC_CACHE
 255                  */
 256                 {T_DIRECT, SIP_MEDIA_FIXED, "COMPAQ", "RAID*", "*"},
 257                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 258         },
 259         /* USB mass storage devices supported by umass(4) */
 260         {
 261                 /*
 262                  * EXATELECOM (Sigmatel) i-Bead 100/105 USB Flash MP3 Player
 263                  * PR: kern/51675
 264                  */
 265                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "EXATEL", "i-BEAD10*", "*"},
 266                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 267         },
 268         {
 269                 /*
 270                  * Power Quotient Int. (PQI) USB flash key
 271                  * PR: kern/53067
 272                  */
 273                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Generic*", "USB Flash Disk*",
 274                 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 275         },
 276         {
 277                 /*
 278                  * Creative Nomad MUVO mp3 player (USB)
 279                  * PR: kern/53094
 280                  */
 281                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "CREATIVE", "NOMAD_MUVO", "*"},
 282                 /*quirks*/ DA_Q_NO_SYNC_CACHE|DA_Q_NO_PREVENT
 283         },
 284         {
 285                 /*
 286                  * Jungsoft NEXDISK USB flash key
 287                  * PR: kern/54737
 288                  */
 289                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "JUNGSOFT", "NEXDISK*", "*"},
 290                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 291         },
 292         {
 293                 /*
 294                  * FreeDik USB Mini Data Drive
 295                  * PR: kern/54786
 296                  */
 297                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "FreeDik*", "Mini Data Drive",
 298                 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 299         },
 300         {
 301                 /*
 302                  * Sigmatel USB Flash MP3 Player
 303                  * PR: kern/57046
 304                  */
 305                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "SigmaTel", "MSCN", "*"},
 306                 /*quirks*/ DA_Q_NO_SYNC_CACHE|DA_Q_NO_PREVENT
 307         },
 308         {
 309                 /*
 310                  * Neuros USB Digital Audio Computer
 311                  * PR: kern/63645
 312                  */
 313                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "NEUROS", "dig. audio comp.",
 314                 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 315         },
 316         {
 317                 /*
 318                  * SEAGRAND NP-900 MP3 Player
 319                  * PR: kern/64563
 320                  */
 321                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "SEAGRAND", "NP-900*", "*"},
 322                 /*quirks*/ DA_Q_NO_SYNC_CACHE|DA_Q_NO_PREVENT
 323         },
 324         {
 325                 /*
 326                  * iRiver iFP MP3 player (with UMS Firmware)
 327                  * PR: kern/54881, i386/63941, kern/66124
 328                  */
 329                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "iRiver", "iFP*", "*"},
 330                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 331         },
 332         {
 333                 /*
 334                  * Frontier Labs NEX IA+ Digital Audio Player, rev 1.10/0.01
 335                  * PR: kern/70158
 336                  */
 337                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "FL" , "Nex*", "*"},
 338                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 339         },
 340         {
 341                 /*
 342                  * ZICPlay USB MP3 Player with FM
 343                  * PR: kern/75057
 344                  */
 345                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "ACTIONS*" , "USB DISK*", "*"},
 346                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 347         },
 348         {
 349                 /*
 350                  * TEAC USB floppy mechanisms
 351                  */
 352                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "TEAC" , "FD-05*", "*"},
 353                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 354         },
 355         {
 356                 /*
 357                  * Kingston DataTraveler II+ USB Pen-Drive.
 358                  * Reported by: Pawel Jakub Dawidek <pjd@FreeBSD.org>
 359                  */
 360                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Kingston" , "DataTraveler II+",
 361                 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 362         },
 363         {
 364                 /*
 365                  * Motorola E398 Mobile Phone (TransFlash memory card).
 366                  * Reported by: Wojciech A. Koszek <dunstan@FreeBSD.czest.pl>
 367                  * PR: usb/89889
 368                  */
 369                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Motorola" , "Motorola Phone",
 370                 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 371         },
 372         {
 373                 /*
 374                  * Qware BeatZkey! Pro
 375                  * PR: usb/79164
 376                  */
 377                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "GENERIC", "USB DISK DEVICE",
 378                 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 379         },
 380         {
 381                 /*
 382                  * Time DPA20B 1GB MP3 Player
 383                  * PR: usb/81846
 384                  */
 385                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "USB2.0*", "(FS) FLASH DISK*",
 386                 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 387         },
 388         {
 389                 /*
 390                  * Samsung USB key 128Mb
 391                  * PR: usb/90081
 392                  */
 393                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "USB-DISK", "FreeDik-FlashUsb",
 394                 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 395         },
 396         {
 397                 /*
 398                  * Kingston DataTraveler 2.0 USB Flash memory.
 399                  * PR: usb/89196
 400                  */
 401                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Kingston", "DataTraveler 2.0",
 402                 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 403         },
 404         {
 405                 /*
 406                  * Creative MUVO Slim mp3 player (USB)
 407                  * PR: usb/86131
 408                  */
 409                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "CREATIVE", "MuVo Slim",
 410                 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE|DA_Q_NO_PREVENT
 411                 },
 412         {
 413                 /*
 414                  * United MP5512 Portable MP3 Player (2-in-1 USB DISK/MP3)
 415                  * PR: usb/80487
 416                  */
 417                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Generic*", "MUSIC DISK",
 418                 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 419         },
 420         {
 421                 /*
 422                  * SanDisk Micro Cruzer 128MB
 423                  * PR: usb/75970
 424                  */
 425                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "SanDisk" , "Micro Cruzer",
 426                 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 427         },
 428         {
 429                 /*
 430                  * TOSHIBA TransMemory USB sticks
 431                  * PR: kern/94660
 432                  */
 433                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "TOSHIBA", "TransMemory",
 434                 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 435         },
 436         {
 437                 /*
 438                  * PNY USB Flash keys
 439                  * PR: usb/75578, usb/72344, usb/65436
 440                  */
 441                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "*" , "USB DISK*",
 442                 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 443         },
 444         {
 445                 /*
 446                  * Genesys 6-in-1 Card Reader
 447                  * PR: usb/94647
 448                  */
 449                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Generic*", "STORAGE DEVICE*",
 450                 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 451         },
 452         {
 453                 /*
 454                  * Rekam Digital CAMERA
 455                  * PR: usb/98713
 456                  */
 457                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "CAMERA*", "4MP-9J6*",
 458                 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 459         },
 460         {
 461                 /*
 462                  * iRiver H10 MP3 player
 463                  * PR: usb/102547
 464                  */
 465                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "iriver", "H10*",
 466                 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 467         },
 468         {
 469                 /*
 470                  * iRiver U10 MP3 player
 471                  * PR: usb/92306
 472                  */
 473                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "iriver", "U10*",
 474                 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 475         },
 476         {
 477                 /*
 478                  * X-Micro Flash Disk
 479                  * PR: usb/96901
 480                  */
 481                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "X-Micro", "Flash Disk",
 482                 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 483         },
 484         {
 485                 /*
 486                  * EasyMP3 EM732X USB 2.0 Flash MP3 Player
 487                  * PR: usb/96546
 488                  */
 489                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "EM732X", "MP3 Player*",
 490                 "1.00"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 491         },
 492         {
 493                 /*
 494                  * Denver MP3 player
 495                  * PR: usb/107101
 496                  */
 497                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "DENVER", "MP3 PLAYER",
 498                  "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 499         },
 500         {
 501                 /*
 502                  * Philips USB Key Audio KEY013
 503                  * PR: usb/68412
 504                  */
 505                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "PHILIPS", "Key*", "*"},
 506                 /*quirks*/ DA_Q_NO_SYNC_CACHE | DA_Q_NO_PREVENT
 507         },
 508         {
 509                 /*
 510                  * JNC MP3 Player
 511                  * PR: usb/94439
 512                  */
 513                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "JNC*" , "MP3 Player*",
 514                  "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 515         },
 516         {
 517                 /*
 518                  * SAMSUNG MP0402H
 519                  * PR: usb/108427
 520                  */
 521                 {T_DIRECT, SIP_MEDIA_FIXED, "SAMSUNG", "MP0402H", "*"},
 522                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 523         },
 524         {
 525                 /*
 526                  * I/O Magic USB flash - Giga Bank
 527                  * PR: usb/108810
 528                  */
 529                 {T_DIRECT, SIP_MEDIA_FIXED, "GS-Magic", "stor*", "*"},
 530                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 531         },
 532         {
 533                 /*
 534                  * JoyFly 128mb USB Flash Drive
 535                  * PR: 96133
 536                  */
 537                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "USB 2.0", "Flash Disk*",
 538                  "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 539         },
 540         {
 541                 /*
 542                  * ChipsBnk usb stick
 543                  * PR: 103702
 544                  */
 545                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "ChipsBnk", "USB*",
 546                  "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 547         },
 548         {
 549                 /*
 550                  * Samsung YP-U3 mp3-player
 551                  * PR: 125398
 552                  */
 553                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Samsung", "YP-U3",
 554                  "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 555         },
 556         {
 557                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Netac", "OnlyDisk*",
 558                 "2000"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 559         },
 560         {
 561                 /*
 562                  * USB 2.0 (HS) Flash Disk MP3 player
 563                  */
 564                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "USB 2.0", "(HS) Flash Disk", "*"},
 565                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 566         },
 567 };
 568
 569 static  d_open_t        daopen;
 570 static  d_close_t       daclose;
 571 static  d_strategy_t    dastrategy;
 572 static  d_dump_t        dadump;
 573 static  periph_init_t   dainit;
 574 static  void            daasync(void *callback_arg, u_int32_t code,
 575                                 struct cam_path *path, void *arg);
 576 static  int             dacmdsizesysctl(SYSCTL_HANDLER_ARGS);
 577 static  periph_ctor_t   daregister;
 578 static  periph_dtor_t   dacleanup;
 579 static  periph_start_t  dastart;
 580 static  periph_oninv_t  daoninvalidate;
 581 static  void            dadone(struct cam_periph *periph,
 582                                union ccb *done_ccb);
 583 static  int             daerror(union ccb *ccb, u_int32_t cam_flags,
 584                                 u_int32_t sense_flags);
 585 static void             daprevent(struct cam_periph *periph, int action);
 586 static int              dagetcapacity(struct cam_periph *periph);
 587 static void             dasetgeom(struct cam_periph *periph, uint32_t block_len,
 588                                   uint64_t maxsector);
 589
 590 static timeout_t        dasendorderedtag;
 591 static void             dashutdown(void *arg, int howto);
 592
 593 #ifndef DA_DEFAULT_TIMEOUT
 594 #define DA_DEFAULT_TIMEOUT 60   /* Timeout in seconds */
 595 #endif
 596
 597 #ifndef DA_DEFAULT_RETRY
 598 #define DA_DEFAULT_RETRY        4
 599 #endif
 600
 601 #ifndef DA_DEFAULT_SEND_ORDERED
 602 #define DA_DEFAULT_SEND_ORDERED 1
 603 #endif
 604
 605 static int da_retry_count = DA_DEFAULT_RETRY;
 606 static int da_default_timeout = DA_DEFAULT_TIMEOUT;
 607 static int da_send_ordered = DA_DEFAULT_SEND_ORDERED;
 608 static struct callout dasendorderedtag_ch;
 609
 610 SYSCTL_NODE(_kern_cam, OID_AUTO, da, CTLFLAG_RD, 0,
 611             "CAM Direct Access Disk driver");
 612 SYSCTL_INT(_kern_cam_da, OID_AUTO, retry_count, CTLFLAG_RW,
 613            &da_retry_count, 0, "Normal I/O retry count");
 614 TUNABLE_INT("kern.cam.da.retry_count", &da_retry_count);
 615 SYSCTL_INT(_kern_cam_da, OID_AUTO, default_timeout, CTLFLAG_RW,
 616            &da_default_timeout, 0, "Normal I/O timeout (in seconds)");
 617 TUNABLE_INT("kern.cam.da.default_timeout", &da_default_timeout);
 618 SYSCTL_INT(_kern_cam_da, OID_AUTO, da_send_ordered, CTLFLAG_RW,
 619            &da_send_ordered, 0, "Send Ordered Tags");
 620 TUNABLE_INT("kern.cam.da.da_send_ordered", &da_send_ordered);
 621
 622 /*
 623  * DA_ORDEREDTAG_INTERVAL determines how often, relative
 624  * to the default timeout, we check to see whether an ordered
 625  * tagged transaction is appropriate to prevent simple tag
 626  * starvation.  Since we'd like to ensure that there is at least
 627  * 1/2 of the timeout length left for a starved transaction to
 628  * complete after we've sent an ordered tag, we must poll at least
 629  * four times in every timeout period.  This takes care of the worst
 630  * case where a starved transaction starts during an interval that
 631  * meets the requirement "don't send an ordered tag" test so it takes
 632  * us two intervals to determine that a tag must be sent.
 633  */
 634 #ifndef DA_ORDEREDTAG_INTERVAL
 635 #define DA_ORDEREDTAG_INTERVAL 4
 636 #endif
 637
 638 static struct periph_driver dadriver =
 639 {
 640         dainit, "da",
 641         TAILQ_HEAD_INITIALIZER(dadriver.units), /* generation */ 0
 642 };
 643
 644 PERIPHDRIVER_DECLARE(da, dadriver);
 645
 646 static struct dev_ops da_ops = {
 647         { "da", DA_CDEV_MAJOR, D_DISK },
 648         .d_open =       daopen,
 649         .d_close =      daclose,
 650         .d_read =       physread,
 651         .d_write =      physwrite,
 652         .d_strategy =   dastrategy,
 653         .d_dump =       dadump
 654 };
 655
 656 static struct extend_array *daperiphs;
 657
 658 MALLOC_DEFINE(M_SCSIDA, "scsi_da", "scsi_da buffers");
 659
 660 static int
 661 daopen(struct dev_open_args *ap)
 662 {
 663         cdev_t dev = ap->a_head.a_dev;
 664         struct cam_periph *periph;
 665         struct da_softc *softc;
 666         struct disk_info info;
 667         int unit;
 668         int error;
 669
 670         unit = dkunit(dev);
 671         periph = cam_extend_get(daperiphs, unit);
 672         if (periph == NULL) {
 673                 return (ENXIO);
 674         }
 675
 676         if (cam_periph_acquire(periph) != CAM_REQ_CMP) {
 677                 return(ENXIO);
 678         }
 679
 680         cam_periph_lock(periph);
 681         if ((error = cam_periph_hold(periph, PCATCH)) != 0) {
 682                 cam_periph_unlock(periph);
 683                 cam_periph_release(periph);
 684                 return (error);
 685         }
 686
 687         unit = periph->unit_number;
 688         softc = (struct da_softc *)periph->softc;
 689         softc->flags |= DA_FLAG_OPEN;
 690
 691         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE,
 692             ("daopen: dev=%s (unit %d)\n", devtoname(dev),
 693              unit));
 694
 695         if ((softc->flags & DA_FLAG_PACK_INVALID) != 0) {
 696                 /* Invalidate our pack information. */
 697                 disk_invalidate(&softc->disk);
 698                 softc->flags &= ~DA_FLAG_PACK_INVALID;
 699         }
 700
 701         error = dagetcapacity(periph);
 702
 703 #if 0
 704         /* Do a read capacity */
 705         {
 706                 struct scsi_read_capacity_data *rcap;
 707                 union  ccb *ccb;
 708
 709                 rcap = kmalloc(sizeof(*rcap), M_SCSIDA, M_INTWAIT | M_ZERO);
 710
 711                 ccb = cam_periph_getccb(periph, /*priority*/1);
 712                 scsi_read_capacity(&ccb->csio,
 713                                    /*retries*/1,
 714                                    /*cbfncp*/dadone,
 715                                    MSG_SIMPLE_Q_TAG,
 716                                    rcap,
 717                                    SSD_FULL_SIZE,
 718                                    /*timeout*/60000);
 719                 ccb->ccb_h.ccb_bio = NULL;
 720
 721                 error = cam_periph_runccb(ccb, daerror, /*cam_flags*/0,
 722                                           /*sense_flags*/SF_RETRY_UA |
 723                                                          SF_RETRY_SELTO,
 724                                           &softc->device_stats);
 725
 726                 xpt_release_ccb(ccb);
 727
 728                 if (error == 0) {
 729                         dasetgeom(periph, rcap);
 730                 }
 731
 732                 kfree(rcap, M_SCSIDA);
 733         }
 734 #endif
 735
 736         if (error == 0) {
 737                 struct ccb_getdev cgd;
 738
 739                 /* Build disk information structure */
 740                 bzero(&info, sizeof(info));
 741                 info.d_type = DTYPE_SCSI;
 742
 743                 /*
 744                  * Grab the inquiry data to get the vendor and product names.
 745                  * Put them in the typename and packname for the label.
 746                  */
 747                 xpt_setup_ccb(&cgd.ccb_h, periph->path, /*priority*/ 1);
 748                 cgd.ccb_h.func_code = XPT_GDEV_TYPE;
 749                 xpt_action((union ccb *)&cgd);
 750
 751 #if 0
 752                 strncpy(label->d_typename, cgd.inq_data.vendor,
 753                         min(SID_VENDOR_SIZE, sizeof(label->d_typename)));
 754                 strncpy(label->d_packname, cgd.inq_data.product,
 755                         min(SID_PRODUCT_SIZE, sizeof(label->d_packname)));
 756 #endif
 757
 758                 /*
 759                  * Mandatory fields
 760                  */
 761                 info.d_media_blksize = softc->params.secsize;
 762                 info.d_media_blocks = softc->params.sectors;
 763                 info.d_media_size = 0;
 764
 765                 /*
 766                  * Optional fields
 767                  */
 768                 info.d_secpertrack = softc->params.secs_per_track;
 769                 info.d_nheads = softc->params.heads;
 770                 info.d_ncylinders = softc->params.cylinders;
 771                 info.d_secpercyl = softc->params.heads *
 772                                    softc->params.secs_per_track;
 773                 disk_setdiskinfo(&softc->disk, &info);
 774
 775                 /*
 776                  * Check to see whether or not the blocksize is set yet.
 777                  * If it isn't, set it and then clear the blocksize
 778                  * unavailable flag for the device statistics.
 779                  */
 780                 if ((softc->device_stats.flags & DEVSTAT_BS_UNAVAILABLE) != 0){
 781                         softc->device_stats.block_size = softc->params.secsize;
 782                         softc->device_stats.flags &= ~DEVSTAT_BS_UNAVAILABLE;
 783                 }
 784         }
 785
 786         if (error == 0) {
 787                 if ((softc->flags & DA_FLAG_PACK_REMOVABLE) != 0 &&
 788                     (softc->quirks & DA_Q_NO_PREVENT) == 0)
 789                         daprevent(periph, PR_PREVENT);
 790         } else {
 791                 softc->flags &= ~DA_FLAG_OPEN;
 792                 cam_periph_release(periph);
 793         }
 794         cam_periph_unhold(periph, 1);
 795         return (error);
 796 }
 797
 798 static int
 799 daclose(struct dev_close_args *ap)
 800 {
 801         cdev_t dev = ap->a_head.a_dev;
 802         struct  cam_periph *periph;
 803         struct  da_softc *softc;
 804         int     unit;
 805         int     error;
 806
 807         unit = dkunit(dev);
 808         periph = cam_extend_get(daperiphs, unit);
 809         if (periph == NULL)
 810                 return (ENXIO);
 811
 812         cam_periph_lock(periph);
 813         if ((error = cam_periph_hold(periph, 0)) != 0) {
 814                 cam_periph_unlock(periph);
 815                 cam_periph_release(periph);
 816                 return (error);
 817         }
 818
 819         softc = (struct da_softc *)periph->softc;
 820
 821         if ((softc->quirks & DA_Q_NO_SYNC_CACHE) == 0) {
 822                 union   ccb *ccb;
 823
 824                 ccb = cam_periph_getccb(periph, /*priority*/1);
 825
 826                 scsi_synchronize_cache(&ccb->csio,
 827                                        /*retries*/1,
 828                                        /*cbfcnp*/dadone,
 829                                        MSG_SIMPLE_Q_TAG,
 830                                        /*begin_lba*/0,/* Cover the whole disk */
 831                                        /*lb_count*/0,
 832                                        SSD_FULL_SIZE,
 833                                        5 * 60 * 1000);
 834
 835                 cam_periph_runccb(ccb, /*error_routine*/NULL, /*cam_flags*/0,
 836                                   /*sense_flags*/SF_RETRY_UA,
 837                                   &softc->device_stats);
 838
 839                 if ((ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
 840                         if ((ccb->ccb_h.status & CAM_STATUS_MASK) ==
 841                              CAM_SCSI_STATUS_ERROR) {
 842                                 int asc, ascq;
 843                                 int sense_key, error_code;
 844
 845                                 scsi_extract_sense(&ccb->csio.sense_data,
 846                                                    &error_code,
 847                                                    &sense_key,
 848                                                    &asc, &ascq);
 849                                 if (sense_key != SSD_KEY_ILLEGAL_REQUEST)
 850                                         scsi_sense_print(&ccb->csio);
 851                         } else {
 852                                 xpt_print(periph->path, "Synchronize cache "
 853                                     "failed, status == 0x%x, scsi status == "
 854                                     "0x%x\n", ccb->csio.ccb_h.status,
 855                                     ccb->csio.scsi_status);
 856                         }
 857                 }
 858
 859                 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
 860                         cam_release_devq(ccb->ccb_h.path,
 861                                          /*relsim_flags*/0,
 862                                          /*reduction*/0,
 863                                          /*timeout*/0,
 864                                          /*getcount_only*/0);
 865
 866                 xpt_release_ccb(ccb);
 867
 868         }
 869
 870         if ((softc->flags & DA_FLAG_PACK_REMOVABLE) != 0) {
 871                 if ((softc->quirks & DA_Q_NO_PREVENT) == 0)
 872                         daprevent(periph, PR_ALLOW);
 873                 /*
 874                  * If we've got removeable media, mark the blocksize as
 875                  * unavailable, since it could change when new media is
 876                  * inserted.
 877                  */
 878                 softc->device_stats.flags |= DEVSTAT_BS_UNAVAILABLE;
 879         }
 880
 881         /*
 882          * Don't compound any ref counting software bugs with more.
 883          */
 884         if (softc->flags & DA_FLAG_OPEN) {
 885                 softc->flags &= ~DA_FLAG_OPEN;
 886                 cam_periph_release(periph);
 887         } else {
 888                 xpt_print(periph->path,
 889                           "daclose() called on an already closed device!\n");
 890         }
 891         cam_periph_unhold(periph, 1);
 892         return (0);
 893 }
 894
 895 /*
 896  * Actually translate the requested transfer into one the physical driver
 897  * can understand.  The transfer is described by a buf and will include
 898  * only one physical transfer.
 899  */
 900 static int
 901 dastrategy(struct dev_strategy_args *ap)
 902 {
 903         cdev_t dev = ap->a_head.a_dev;
 904         struct bio *bio = ap->a_bio;
 905         struct buf *bp = bio->bio_buf;
 906         struct cam_periph *periph;
 907         struct da_softc *softc;
 908         u_int  unit;
 909         u_int  part;
 910
 911         unit = dkunit(dev);
 912         part = dkpart(dev);
 913         periph = cam_extend_get(daperiphs, unit);
 914         if (periph == NULL) {
 915                 bp->b_error = ENXIO;
 916                 goto bad;
 917         }
 918         softc = (struct da_softc *)periph->softc;
 919
 920         cam_periph_lock(periph);
 921
 922 #if 0
 923         /*
 924          * check it's not too big a transfer for our adapter
 925          */
 926         scsi_minphys(bp, &sd_switch);
 927 #endif
 928
 929         /*
 930          * Mask interrupts so that the pack cannot be invalidated until
 931          * after we are in the queue.  Otherwise, we might not properly
 932          * clean up one of the buffers.
 933          */
 934
 935         /*
 936          * If the device has been made invalid, error out
 937          */
 938         if ((softc->flags & DA_FLAG_PACK_INVALID)) {
 939                 cam_periph_unlock(periph);
 940                 bp->b_error = ENXIO;
 941                 goto bad;
 942         }
 943
 944         /*
 945          * Place it in the queue of disk activities for this disk
 946          */
 947         bioqdisksort(&softc->bio_queue, bio);
 948
 949         /*
 950          * Schedule ourselves for performing the work.
 951          */
 952         xpt_schedule(periph, /* XXX priority */1);
 953         cam_periph_unlock(periph);
 954
 955         return(0);
 956 bad:
 957         bp->b_flags |= B_ERROR;
 958
 959         /*
 960          * Correctly set the buf to indicate a completed xfer
 961          */
 962         bp->b_resid = bp->b_bcount;
 963         biodone(bio);
 964         return(0);
 965 }
 966
 967 static int
 968 dadump(struct dev_dump_args *ap)
 969 {
 970         cdev_t dev = ap->a_head.a_dev;
 971         struct      cam_periph *periph;
 972         struct      da_softc *softc;
 973         u_int       unit;
 974         long        blkcnt;
 975         vm_paddr_t  addr;
 976         struct      ccb_scsiio csio;
 977         int         dumppages = MAXDUMPPGS;
 978         int         i;
 979
 980         /* toss any characters present prior to dump */
 981         while (cncheckc() != -1)
 982                 ;
 983
 984         unit = dkunit(dev);
 985         periph = cam_extend_get(daperiphs, unit);
 986         if (periph == NULL) {
 987                 return (ENXIO);
 988         }
 989         softc = (struct da_softc *)periph->softc;
 990
 991         cam_periph_lock(periph);
 992         if ((softc->flags & DA_FLAG_PACK_INVALID) != 0) {
 993                 cam_periph_unlock(periph);
 994                 return (ENXIO);
 995         }
 996
 997         addr = 0;       /* starting address */
 998         blkcnt = howmany(PAGE_SIZE, ap->a_secsize);
 999
1000         while (ap->a_count > 0) {
1001                 caddr_t va = NULL;
1002
1003                 if ((ap->a_count / blkcnt) < dumppages)
1004                         dumppages = ap->a_count / blkcnt;
1005
1006                 for (i = 0; i < dumppages; ++i) {
1007                         vm_paddr_t a = addr + (i * PAGE_SIZE);
1008                         if (is_physical_memory(a))
1009                                 va = pmap_kenter_temporary(trunc_page(a), i);
1010                         else
1011                                 va = pmap_kenter_temporary(trunc_page(0), i);
1012                 }
1013
1014                 xpt_setup_ccb(&csio.ccb_h, periph->path, /*priority*/1);
1015                 csio.ccb_h.flags |= CAM_POLLED;
1016                 csio.ccb_h.ccb_state = DA_CCB_DUMP;
1017                 scsi_read_write(&csio,
1018                                 /*retries*/1,
1019                                 dadone,
1020                                 MSG_ORDERED_Q_TAG,
1021                                 /*read*/FALSE,
1022                                 /*byte2*/0,
1023                                 /*minimum_cmd_size*/ softc->minimum_cmd_size,
1024                                 ap->a_blkno,
1025                                 blkcnt * dumppages,
1026                                 /*data_ptr*/(u_int8_t *) va,
1027                                 /*dxfer_len*/blkcnt * ap->a_secsize * dumppages,
1028                                 /*sense_len*/SSD_FULL_SIZE,
1029                                 DA_DEFAULT_TIMEOUT * 1000);
1030                 xpt_polled_action((union ccb *)&csio);
1031
1032                 if ((csio.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1033                         kprintf("Aborting dump due to I/O error.\n");
1034                         if ((csio.ccb_h.status & CAM_STATUS_MASK) ==
1035                              CAM_SCSI_STATUS_ERROR)
1036                                 scsi_sense_print(&csio);
1037                         else
1038                                 kprintf("status == 0x%x, scsi status == 0x%x\n",
1039                                        csio.ccb_h.status, csio.scsi_status);
1040                         return(EIO);
1041                 }
1042
1043                 if (dumpstatus(addr, (off_t)ap->a_count * softc->params.secsize) < 0)
1044                         return (EINTR);
1045
1046                 /* update block count */
1047                 ap->a_count -= blkcnt * dumppages;
1048                 ap->a_blkno += blkcnt * dumppages;
1049                 addr += PAGE_SIZE * dumppages;
1050         }
1051
1052         /*
1053          * Sync the disk cache contents to the physical media.
1054          */
1055         if ((softc->quirks & DA_Q_NO_SYNC_CACHE) == 0) {
1056
1057                 xpt_setup_ccb(&csio.ccb_h, periph->path, /*priority*/1);
1058                 csio.ccb_h.ccb_state = DA_CCB_DUMP;
1059                 scsi_synchronize_cache(&csio,
1060                                        /*retries*/1,
1061                                        /*cbfcnp*/dadone,
1062                                        MSG_SIMPLE_Q_TAG,
1063                                        /*begin_lba*/0,/* Cover the whole disk */
1064                                        /*lb_count*/0,
1065                                        SSD_FULL_SIZE,
1066                                        5 * 60 * 1000);
1067                 xpt_polled_action((union ccb *)&csio);
1068
1069                 if ((csio.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1070                         if ((csio.ccb_h.status & CAM_STATUS_MASK) ==
1071                              CAM_SCSI_STATUS_ERROR) {
1072                                 int asc, ascq;
1073                                 int sense_key, error_code;
1074
1075                                 scsi_extract_sense(&csio.sense_data,
1076                                                    &error_code,
1077                                                    &sense_key,
1078                                                    &asc, &ascq);
1079                                 if (sense_key != SSD_KEY_ILLEGAL_REQUEST)
1080                                         scsi_sense_print(&csio);
1081                         } else {
1082                                 xpt_print(periph->path, "Synchronize cache "
1083                                     "failed, status == 0x%x, scsi status == "
1084                                     "0x%x\n", csio.ccb_h.status,
1085                                     csio.scsi_status);
1086                         }
1087                 }
1088         }
1089         cam_periph_unlock(periph);
1090         return (0);
1091 }
1092
1093 static void
1094 dainit(void)
1095 {
1096         cam_status status;
1097
1098         /*
1099          * Create our extend array for storing the devices we attach to.
1100          */
1101         daperiphs = cam_extend_new();
1102         if (daperiphs == NULL) {
1103                 kprintf("da: Failed to alloc extend array!\n");
1104                 return;
1105         }
1106
1107         callout_init(&dasendorderedtag_ch);
1108
1109         /*
1110          * Install a global async callback.  This callback will
1111          * receive async callbacks like "new device found".
1112          */
1113         status = xpt_register_async(AC_FOUND_DEVICE, daasync, NULL, NULL);
1114
1115         if (status != CAM_REQ_CMP) {
1116                 kprintf("da: Failed to attach master async callback "
1117                        "due to status 0x%x!\n", status);
1118         } else if (da_send_ordered) {
1119
1120                 /* Register our shutdown event handler */
1121                 if ((EVENTHANDLER_REGISTER(shutdown_post_sync, dashutdown,
1122                                            NULL, SHUTDOWN_PRI_DEFAULT)) == NULL)
1123                     kprintf("dainit: shutdown event registration failed!\n");
1124         }
1125 }
1126
1127 static void
1128 daoninvalidate(struct cam_periph *periph)
1129 {
1130         struct da_softc *softc;
1131         struct bio *q_bio;
1132         struct buf *q_bp;
1133
1134         softc = (struct da_softc *)periph->softc;
1135
1136         /*
1137          * De-register any async callbacks.
1138          */
1139         xpt_register_async(0, daasync, periph, periph->path);
1140
1141         softc->flags |= DA_FLAG_PACK_INVALID;
1142
1143         /*
1144          * Return all queued I/O with ENXIO.
1145          * XXX Handle any transactions queued to the card
1146          *     with XPT_ABORT_CCB.
1147          */
1148         while ((q_bio = bioq_first(&softc->bio_queue)) != NULL){
1149                 bioq_remove(&softc->bio_queue, q_bio);
1150                 q_bp = q_bio->bio_buf;
1151                 q_bp->b_resid = q_bp->b_bcount;
1152                 q_bp->b_error = ENXIO;
1153                 q_bp->b_flags |= B_ERROR;
1154                 biodone(q_bio);
1155         }
1156         xpt_print(periph->path, "lost device\n");
1157 }
1158
1159 static void
1160 dacleanup(struct cam_periph *periph)
1161 {
1162         struct da_softc *softc;
1163
1164         softc = (struct da_softc *)periph->softc;
1165
1166         devstat_remove_entry(&softc->device_stats);
1167         cam_extend_release(daperiphs, periph->unit_number);
1168         xpt_print(periph->path, "removing device entry\n");
1169         /*
1170          * If we can't free the sysctl tree, oh well...
1171          */
1172         if ((softc->flags & DA_FLAG_SCTX_INIT) != 0
1173             && sysctl_ctx_free(&softc->sysctl_ctx) != 0) {
1174                 xpt_print(periph->path, "can't remove sysctl context\n");
1175         }
1176         periph->softc = NULL;
1177         if (softc->disk.d_rawdev) {
1178                 cam_periph_unlock(periph);
1179                 disk_destroy(&softc->disk);
1180                 cam_periph_lock(periph);
1181         }
1182
1183         callout_stop(&softc->sendordered_c);
1184         kfree(softc, M_DEVBUF);
1185 }
1186
1187 static void
1188 daasync(void *callback_arg, u_int32_t code,
1189         struct cam_path *path, void *arg)
1190 {
1191         struct cam_periph *periph;
1192
1193         periph = (struct cam_periph *)callback_arg;
1194
1195         switch (code) {
1196         case AC_FOUND_DEVICE:
1197         {
1198                 struct ccb_getdev *cgd;
1199                 struct cam_sim *sim;
1200                 cam_status status;
1201
1202                 cgd = (struct ccb_getdev *)arg;
1203                 if (cgd == NULL)
1204                         break;
1205
1206                 if (SID_TYPE(&cgd->inq_data) != T_DIRECT
1207                     && SID_TYPE(&cgd->inq_data) != T_RBC
1208                     && SID_TYPE(&cgd->inq_data) != T_OPTICAL)
1209                         break;
1210
1211                 /*
1212                  * Don't complain if a valid peripheral is already attached.
1213                  */
1214                 periph = cam_periph_find(cgd->ccb_h.path, "da");
1215                 if (periph && (periph->flags & CAM_PERIPH_INVALID) == 0)
1216                         break;
1217
1218                 /*
1219                  * Allocate a peripheral instance for
1220                  * this device and start the probe
1221                  * process.
1222                  */
1223                 sim = xpt_path_sim(cgd->ccb_h.path);
1224                 status = cam_periph_alloc(daregister, daoninvalidate,
1225                                           dacleanup, dastart,
1226                                           "da", CAM_PERIPH_BIO,
1227                                           cgd->ccb_h.path, daasync,
1228                                           AC_FOUND_DEVICE, cgd);
1229
1230                 if (status != CAM_REQ_CMP && status != CAM_REQ_INPROG) {
1231                         kprintf("daasync: Unable to attach to new device "
1232                                 "due to status 0x%x\n", status);
1233                 }
1234                 break;
1235         }
1236         case AC_SENT_BDR:
1237         case AC_BUS_RESET:
1238         {
1239                 struct da_softc *softc;
1240                 struct ccb_hdr *ccbh;
1241
1242                 softc = (struct da_softc *)periph->softc;
1243                 /*
1244                  * Don't fail on the expected unit attention
1245                  * that will occur.
1246                  */
1247                 softc->flags |= DA_FLAG_RETRY_UA;
1248                 LIST_FOREACH(ccbh, &softc->pending_ccbs, periph_links.le)
1249                         ccbh->ccb_state |= DA_CCB_RETRY_UA;
1250                 /* FALLTHROUGH*/
1251         }
1252         default:
1253                 cam_periph_async(periph, code, path, arg);
1254                 break;
1255         }
1256 }
1257
1258 static void
1259 dasysctlinit(void *context, int pending)
1260 {
1261         struct cam_periph *periph;
1262         struct da_softc *softc;
1263         char tmpstr[80], tmpstr2[80];
1264
1265         periph = (struct cam_periph *)context;
1266         if (cam_periph_acquire(periph) != CAM_REQ_CMP)
1267                 return;
1268
1269         softc = (struct da_softc *)periph->softc;
1270         ksnprintf(tmpstr, sizeof(tmpstr), "CAM DA unit %d", periph->unit_number);
1271         ksnprintf(tmpstr2, sizeof(tmpstr2), "%d", periph->unit_number);
1272
1273         sysctl_ctx_init(&softc->sysctl_ctx);
1274         softc->flags |= DA_FLAG_SCTX_INIT;
1275         softc->sysctl_tree = SYSCTL_ADD_NODE(&softc->sysctl_ctx,
1276                 SYSCTL_STATIC_CHILDREN(_kern_cam_da), OID_AUTO, tmpstr2,
1277                 CTLFLAG_RD, 0, tmpstr);
1278         if (softc->sysctl_tree == NULL) {
1279                 kprintf("dasysctlinit: unable to allocate sysctl tree\n");
1280                 cam_periph_release(periph);
1281                 return;
1282         }
1283
1284         /*
1285          * Now register the sysctl handler, so the user can the value on
1286          * the fly.
1287          */
1288         SYSCTL_ADD_PROC(&softc->sysctl_ctx,SYSCTL_CHILDREN(softc->sysctl_tree),
1289                 OID_AUTO, "minimum_cmd_size", CTLTYPE_INT | CTLFLAG_RW,
1290                 &softc->minimum_cmd_size, 0, dacmdsizesysctl, "I",
1291                 "Minimum CDB size");
1292
1293         cam_periph_release(periph);
1294 }
1295
1296 static int
1297 dacmdsizesysctl(SYSCTL_HANDLER_ARGS)
1298 {
1299         int error, value;
1300
1301         value = *(int *)arg1;
1302
1303         error = sysctl_handle_int(oidp, &value, 0, req);
1304
1305         if ((error != 0)
1306          || (req->newptr == NULL))
1307                 return (error);
1308
1309         /*
1310          * Acceptable values here are 6, 10 or 12, or 16.
1311          */
1312         if (value < 6)
1313                 value = 6;
1314         else if ((value > 6)
1315               && (value <= 10))
1316                 value = 10;
1317         else if ((value > 10)
1318               && (value <= 12))
1319                 value = 12;
1320         else if (value > 12)
1321                 value = 16;
1322
1323         *(int *)arg1 = value;
1324
1325         return (0);
1326 }
1327
1328 static cam_status
1329 daregister(struct cam_periph *periph, void *arg)
1330 {
1331         struct da_softc *softc;
1332         struct ccb_pathinq cpi;
1333         struct ccb_getdev *cgd;
1334         char tmpstr[80];
1335         caddr_t match;
1336
1337         cgd = (struct ccb_getdev *)arg;
1338         if (periph == NULL) {
1339                 kprintf("daregister: periph was NULL!!\n");
1340                 return(CAM_REQ_CMP_ERR);
1341         }
1342
1343         if (cgd == NULL) {
1344                 kprintf("daregister: no getdev CCB, can't register device\n");
1345                 return(CAM_REQ_CMP_ERR);
1346         }
1347
1348         softc = kmalloc(sizeof(*softc), M_DEVBUF, M_INTWAIT | M_ZERO);
1349         LIST_INIT(&softc->pending_ccbs);
1350         softc->state = DA_STATE_PROBE;
1351         bioq_init(&softc->bio_queue);
1352         if (SID_IS_REMOVABLE(&cgd->inq_data))
1353                 softc->flags |= DA_FLAG_PACK_REMOVABLE;
1354         if ((cgd->inq_data.flags & SID_CmdQue) != 0)
1355                 softc->flags |= DA_FLAG_TAGGED_QUEUING;
1356
1357         periph->softc = softc;
1358
1359         cam_extend_set(daperiphs, periph->unit_number, periph);
1360
1361         /*
1362          * See if this device has any quirks.
1363          */
1364         match = cam_quirkmatch((caddr_t)&cgd->inq_data,
1365                                (caddr_t)da_quirk_table,
1366                                sizeof(da_quirk_table)/sizeof(*da_quirk_table),
1367                                sizeof(*da_quirk_table), scsi_inquiry_match);
1368
1369         if (match != NULL)
1370                 softc->quirks = ((struct da_quirk_entry *)match)->quirks;
1371         else
1372                 softc->quirks = DA_Q_NONE;
1373
1374         TASK_INIT(&softc->sysctl_task, 0, dasysctlinit, periph);
1375
1376         /* Check if the SIM does not want 6 byte commands */
1377         xpt_setup_ccb(&cpi.ccb_h, periph->path, /*priority*/1);
1378         cpi.ccb_h.func_code = XPT_PATH_INQ;
1379         xpt_action((union ccb *)&cpi);
1380         if (cpi.ccb_h.status == CAM_REQ_CMP && (cpi.hba_misc & PIM_NO_6_BYTE))
1381                 softc->quirks |= DA_Q_NO_6_BYTE;
1382
1383         /*
1384          * RBC devices don't have to support READ(6), only READ(10).
1385          */
1386         if (softc->quirks & DA_Q_NO_6_BYTE || SID_TYPE(&cgd->inq_data) == T_RBC)
1387                 softc->minimum_cmd_size = 10;
1388         else
1389                 softc->minimum_cmd_size = 6;
1390
1391         /*
1392          * Load the user's default, if any.
1393          */
1394         ksnprintf(tmpstr, sizeof(tmpstr), "kern.cam.da.%d.minimum_cmd_size",
1395                  periph->unit_number);
1396         TUNABLE_INT_FETCH(tmpstr, &softc->minimum_cmd_size);
1397
1398         /*
1399          * 6, 10, 12, and 16 are the currently permissible values.
1400          */
1401         if (softc->minimum_cmd_size < 6)
1402                 softc->minimum_cmd_size = 6;
1403         else if ((softc->minimum_cmd_size > 6)
1404               && (softc->minimum_cmd_size <= 10))
1405                 softc->minimum_cmd_size = 10;
1406         else if ((softc->minimum_cmd_size > 10)
1407               && (softc->minimum_cmd_size <= 12))
1408                 softc->minimum_cmd_size = 12;
1409         else if (softc->minimum_cmd_size > 12)
1410                 softc->minimum_cmd_size = 16;
1411
1412         /*
1413          * The DA driver supports a blocksize, but
1414          * we don't know the blocksize until we do
1415          * a read capacity.  So, set a flag to
1416          * indicate that the blocksize is
1417          * unavailable right now.  We'll clear the
1418          * flag as soon as we've done a read capacity.
1419          */
1420         devstat_add_entry(&softc->device_stats, "da",
1421                           periph->unit_number, 0,
1422                           DEVSTAT_BS_UNAVAILABLE,
1423                           SID_TYPE(&cgd->inq_data) | DEVSTAT_TYPE_IF_SCSI,
1424                           DEVSTAT_PRIORITY_DISK);
1425
1426         /*
1427          * Register this media as a disk
1428          */
1429
1430         CAM_SIM_UNLOCK(periph->sim);
1431         disk_create(periph->unit_number, &softc->disk, &da_ops);
1432         softc->disk.d_rawdev->si_iosize_max = MAXPHYS;
1433         CAM_SIM_LOCK(periph->sim);
1434
1435         /*
1436          * Add async callbacks for bus reset and
1437          * bus device reset calls.  I don't bother
1438          * checking if this fails as, in most cases,
1439          * the system will function just fine without
1440          * them and the only alternative would be to
1441          * not attach the device on failure.
1442          */
1443         xpt_register_async(AC_SENT_BDR | AC_BUS_RESET | AC_LOST_DEVICE,
1444                            daasync, periph, periph->path);
1445
1446         /*
1447          * Take an exclusive refcount on the periph while dastart is called
1448          * to finish the probe.  The reference will be dropped in dadone at
1449          * the end of probe.
1450          */
1451         cam_periph_hold(periph, 0);
1452         xpt_schedule(periph, /*priority*/5);
1453
1454         /*
1455          * Schedule a periodic event to occasionally send an
1456          * ordered tag to a device.
1457          */
1458         callout_init(&softc->sendordered_c);
1459         callout_reset(&softc->sendordered_c,
1460             (DA_DEFAULT_TIMEOUT * hz) / DA_ORDEREDTAG_INTERVAL,
1461             dasendorderedtag, softc);
1462
1463         return(CAM_REQ_CMP);
1464 }
1465
1466 static void
1467 dastart(struct cam_periph *periph, union ccb *start_ccb)
1468 {
1469         struct da_softc *softc;
1470
1471         softc = (struct da_softc *)periph->softc;
1472
1473         switch (softc->state) {
1474         case DA_STATE_NORMAL:
1475         {
1476                 /* Pull a buffer from the queue and get going on it */
1477                 struct bio *bio;
1478                 struct buf *bp;
1479                 u_int8_t tag_code;
1480
1481                 /*
1482                  * See if there is a buf with work for us to do..
1483                  */
1484                 bio = bioq_first(&softc->bio_queue);
1485                 if (periph->immediate_priority <= periph->pinfo.priority) {
1486                         CAM_DEBUG_PRINT(CAM_DEBUG_SUBTRACE,
1487                                         ("queuing for immediate ccb\n"));
1488                         start_ccb->ccb_h.ccb_state = DA_CCB_WAITING;
1489                         SLIST_INSERT_HEAD(&periph->ccb_list, &start_ccb->ccb_h,
1490                                           periph_links.sle);
1491                         periph->immediate_priority = CAM_PRIORITY_NONE;
1492                         wakeup(&periph->ccb_list);
1493                         if (bio != NULL) {
1494                                 /*
1495                                  * Have more work to do, so ensure we stay
1496                                  * scheduled
1497                                  */
1498                                 xpt_schedule(periph, /* XXX priority */1);
1499                         }
1500                         break;
1501                 }
1502                 if (bio == NULL) {
1503                         xpt_release_ccb(start_ccb);
1504                         break;
1505                 }
1506
1507                 /*
1508                  * We can queue new work.
1509                  */
1510                 bioq_remove(&softc->bio_queue, bio);
1511                 bp = bio->bio_buf;
1512
1513                 devstat_start_transaction(&softc->device_stats);
1514
1515                 if ((bp->b_flags & B_ORDERED) != 0 ||
1516                     (softc->flags & DA_FLAG_NEED_OTAG) != 0) {
1517                         softc->flags &= ~DA_FLAG_NEED_OTAG;
1518                         softc->ordered_tag_count++;
1519                         tag_code = MSG_ORDERED_Q_TAG;
1520                 } else {
1521                         tag_code = MSG_SIMPLE_Q_TAG;
1522                 }
1523
1524                 switch(bp->b_cmd) {
1525                 case BUF_CMD_READ:
1526                 case BUF_CMD_WRITE:
1527                         /*
1528                          * Block read/write op
1529                          */
1530                         KKASSERT(bio->bio_offset % softc->params.secsize == 0);
1531
1532                         scsi_read_write(
1533                                 &start_ccb->csio,
1534                                 da_retry_count,         /* retries */
1535                                 dadone,
1536                                 tag_code,
1537                                 (bp->b_cmd == BUF_CMD_READ),
1538                                 0,                      /* byte2 */
1539                                 softc->minimum_cmd_size,
1540                                 bio->bio_offset / softc->params.secsize,
1541                                 bp->b_bcount / softc->params.secsize,
1542                                 bp->b_data,
1543                                 bp->b_bcount,
1544                                 SSD_FULL_SIZE,          /* sense_len */
1545                                 da_default_timeout * 1000
1546                         );
1547                         break;
1548                 case BUF_CMD_FLUSH:
1549                         scsi_synchronize_cache(
1550                                 &start_ccb->csio,
1551                                 1,                      /* retries */
1552                                 dadone,                 /* cbfcnp */
1553                                 MSG_SIMPLE_Q_TAG,
1554                                 0,                      /* lba */
1555                                 0,                      /* count (whole disk) */
1556                                 SSD_FULL_SIZE,
1557                                 da_default_timeout*1000 /* timeout */
1558                         );
1559                         break;
1560                 default:
1561                         panic("dastart: unrecognized bio cmd %d", bp->b_cmd);
1562                         break; /* NOT REACHED */
1563                 }
1564
1565                 /*
1566                  * Block out any asyncronous callbacks
1567                  * while we touch the pending ccb list.
1568                  */
1569                 start_ccb->ccb_h.ccb_state = DA_CCB_BUFFER_IO;
1570                 LIST_INSERT_HEAD(&softc->pending_ccbs,
1571                                  &start_ccb->ccb_h, periph_links.le);
1572                 softc->outstanding_cmds++;
1573
1574                 /* We expect a unit attention from this device */
1575                 if ((softc->flags & DA_FLAG_RETRY_UA) != 0) {
1576                         start_ccb->ccb_h.ccb_state |= DA_CCB_RETRY_UA;
1577                         softc->flags &= ~DA_FLAG_RETRY_UA;
1578                 }
1579
1580                 start_ccb->ccb_h.ccb_bio = bio;
1581                 xpt_action(start_ccb);
1582
1583                 /*
1584                  * Be sure we stay scheduled if we have more work to do.
1585                  */
1586                 bio = bioq_first(&softc->bio_queue);
1587                 if (bio != NULL)
1588                         xpt_schedule(periph, 1);
1589                 break;
1590         }
1591         case DA_STATE_PROBE:
1592         {
1593                 struct ccb_scsiio *csio;
1594                 struct scsi_read_capacity_data *rcap;
1595
1596                 rcap = kmalloc(sizeof(*rcap), M_SCSIDA, M_INTWAIT | M_ZERO);
1597                 csio = &start_ccb->csio;
1598                 scsi_read_capacity(csio,
1599                                    /*retries*/4,
1600                                    dadone,
1601                                    MSG_SIMPLE_Q_TAG,
1602                                    rcap,
1603                                    SSD_FULL_SIZE,
1604                                    /*timeout*/5000);
1605                 start_ccb->ccb_h.ccb_bio = NULL;
1606                 start_ccb->ccb_h.ccb_state = DA_CCB_PROBE;
1607                 xpt_action(start_ccb);
1608                 break;
1609         }
1610         case DA_STATE_PROBE2:
1611         {
1612                 struct ccb_scsiio *csio;
1613                 struct scsi_read_capacity_data_16 *rcaplong;
1614
1615                 rcaplong = kmalloc(sizeof(*rcaplong), M_SCSIDA,
1616                                    M_INTWAIT | M_ZERO);
1617                 if (rcaplong == NULL) {
1618                         kprintf("dastart: Couldn't allocate read_capacity\n");
1619                         /* da_free_periph??? */
1620                         break;
1621                 }
1622                 csio = &start_ccb->csio;
1623                 scsi_read_capacity_16(csio,
1624                                     /*retries*/ 4,
1625                                     /*cbfcnp*/ dadone,
1626                                     /*tag_action*/ MSG_SIMPLE_Q_TAG,
1627                                     /*lba*/ 0,
1628                                     /*reladr*/ 0,
1629                                     /*pmi*/ 0,
1630                                     rcaplong,
1631                                     /*sense_len*/ SSD_FULL_SIZE,
1632                                     /*timeout*/ 60000);
1633                 start_ccb->ccb_h.ccb_bio = NULL;
1634                 start_ccb->ccb_h.ccb_state = DA_CCB_PROBE2;
1635                 xpt_action(start_ccb);
1636                 break;
1637         }
1638         }
1639 }
1640
1641 static int
1642 cmd6workaround(union ccb *ccb)
1643 {
1644         struct scsi_rw_6 cmd6;
1645         struct scsi_rw_10 *cmd10;
1646         struct da_softc *softc;
1647         u_int8_t *cdb;
1648         int frozen;
1649
1650         cdb = ccb->csio.cdb_io.cdb_bytes;
1651
1652         /* Translation only possible if CDB is an array and cmd is R/W6 */
1653         if ((ccb->ccb_h.flags & CAM_CDB_POINTER) != 0 ||
1654             (*cdb != READ_6 && *cdb != WRITE_6))
1655                 return 0;
1656
1657         xpt_print(ccb->ccb_h.path, "READ(6)/WRITE(6) not supported, "
1658             "increasing minimum_cmd_size to 10.\n");
1659         softc = (struct da_softc *)xpt_path_periph(ccb->ccb_h.path)->softc;
1660         softc->minimum_cmd_size = 10;
1661
1662         bcopy(cdb, &cmd6, sizeof(struct scsi_rw_6));
1663         cmd10 = (struct scsi_rw_10 *)cdb;
1664         cmd10->opcode = (cmd6.opcode == READ_6) ? READ_10 : WRITE_10;
1665         cmd10->byte2 = 0;
1666         scsi_ulto4b(scsi_3btoul(cmd6.addr), cmd10->addr);
1667         cmd10->reserved = 0;
1668         scsi_ulto2b(cmd6.length, cmd10->length);
1669         cmd10->control = cmd6.control;
1670         ccb->csio.cdb_len = sizeof(*cmd10);
1671
1672         /* Requeue request, unfreezing queue if necessary */
1673         frozen = (ccb->ccb_h.status & CAM_DEV_QFRZN) != 0;
1674         ccb->ccb_h.status = CAM_REQUEUE_REQ;
1675         xpt_action(ccb);
1676         if (frozen) {
1677                 cam_release_devq(ccb->ccb_h.path,
1678                                  /*relsim_flags*/0,
1679                                  /*reduction*/0,
1680                                  /*timeout*/0,
1681                                  /*getcount_only*/0);
1682         }
1683         return (ERESTART);
1684 }
1685
1686 static void
1687 dadone(struct cam_periph *periph, union ccb *done_ccb)
1688 {
1689         struct da_softc *softc;
1690         struct ccb_scsiio *csio;
1691
1692         softc = (struct da_softc *)periph->softc;
1693         csio = &done_ccb->csio;
1694         switch (csio->ccb_h.ccb_state & DA_CCB_TYPE_MASK) {
1695         case DA_CCB_BUFFER_IO:
1696         {
1697                 struct buf *bp;
1698                 struct bio *bio;
1699
1700                 bio = (struct bio *)done_ccb->ccb_h.ccb_bio;
1701                 bp = bio->bio_buf;
1702                 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1703                         int error;
1704                         int sf;
1705
1706                         if ((csio->ccb_h.ccb_state & DA_CCB_RETRY_UA) != 0)
1707                                 sf = SF_RETRY_UA;
1708                         else
1709                                 sf = 0;
1710
1711                         error = daerror(done_ccb, CAM_RETRY_SELTO, sf);
1712                         if (error == ERESTART) {
1713                                 /*
1714                                  * A retry was scheuled, so
1715                                  * just return.
1716                                  */
1717                                 return;
1718                         }
1719                         if (error != 0) {
1720                                 struct bio *q_bio;
1721                                 struct buf *q_bp;
1722
1723                                 if (error == ENXIO) {
1724                                         /*
1725                                          * Catastrophic error.  Mark our pack as
1726                                          * invalid.
1727                                          */
1728                                         /*
1729                                          * XXX See if this is really a media
1730                                          * XXX change first?
1731                                          */
1732                                         xpt_print(periph->path,
1733                                             "Invalidating pack\n");
1734                                         softc->flags |= DA_FLAG_PACK_INVALID;
1735                                 }
1736
1737                                 /*
1738                                  * return all queued I/O with EIO, so that
1739                                  * the client can retry these I/Os in the
1740                                  * proper order should it attempt to recover.
1741                                  */
1742                                 while ((q_bio = bioq_first(&softc->bio_queue))
1743                                         != NULL) {
1744                                         bioq_remove(&softc->bio_queue, q_bio);
1745                                         q_bp = q_bio->bio_buf;
1746                                         q_bp->b_resid = q_bp->b_bcount;
1747                                         q_bp->b_error = EIO;
1748                                         q_bp->b_flags |= B_ERROR;
1749                                         biodone(q_bio);
1750                                 }
1751                                 bp->b_error = error;
1752                                 bp->b_resid = bp->b_bcount;
1753                                 bp->b_flags |= B_ERROR;
1754                         } else {
1755                                 bp->b_resid = csio->resid;
1756                                 bp->b_error = 0;
1757                                 if (bp->b_resid != 0)
1758                                         bp->b_flags |= B_ERROR;
1759                         }
1760                         if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
1761                                 cam_release_devq(done_ccb->ccb_h.path,
1762                                                  /*relsim_flags*/0,
1763                                                  /*reduction*/0,
1764                                                  /*timeout*/0,
1765                                                  /*getcount_only*/0);
1766                 } else {
1767                         if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
1768                                 panic("REQ_CMP with QFRZN");
1769                         bp->b_resid = csio->resid;
1770                         if (csio->resid > 0)
1771                                 bp->b_flags |= B_ERROR;
1772                 }
1773
1774                 /*
1775                  * Block out any asyncronous callbacks
1776                  * while we touch the pending ccb list.
1777                  */
1778                 LIST_REMOVE(&done_ccb->ccb_h, periph_links.le);
1779                 softc->outstanding_cmds--;
1780                 if (softc->outstanding_cmds == 0)
1781                         softc->flags |= DA_FLAG_WENT_IDLE;
1782
1783                 devstat_end_transaction_buf(&softc->device_stats, bp);
1784                 biodone(bio);
1785                 break;
1786         }
1787         case DA_CCB_PROBE:
1788         case DA_CCB_PROBE2:
1789         {
1790                 struct     scsi_read_capacity_data *rdcap;
1791                 struct     scsi_read_capacity_data_16 *rcaplong;
1792                 char       announce_buf[80];
1793
1794                 rdcap = NULL;
1795                 rcaplong = NULL;
1796                 if (softc->state == DA_STATE_PROBE)
1797                         rdcap =(struct scsi_read_capacity_data *)csio->data_ptr;
1798                 else
1799                         rcaplong = (struct scsi_read_capacity_data_16 *)
1800                                     csio->data_ptr;
1801
1802                 if ((csio->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP) {
1803                         struct disk_params *dp;
1804                         uint32_t block_size;
1805                         uint64_t maxsector;
1806
1807                         if (softc->state == DA_STATE_PROBE) {
1808                                 block_size = scsi_4btoul(rdcap->length);
1809                                 maxsector = scsi_4btoul(rdcap->addr);
1810
1811                                 /*
1812                                  * According to SBC-2, if the standard 10
1813                                  * byte READ CAPACITY command returns 2^32,
1814                                  * we should issue the 16 byte version of
1815                                  * the command, since the device in question
1816                                  * has more sectors than can be represented
1817                                  * with the short version of the command.
1818                                  */
1819                                 if (maxsector == 0xffffffff) {
1820                                         softc->state = DA_STATE_PROBE2;
1821                                         kfree(rdcap, M_SCSIDA);
1822                                         xpt_release_ccb(done_ccb);
1823                                         xpt_schedule(periph, /*priority*/5);
1824                                         return;
1825                                 }
1826                         } else {
1827                                 block_size = scsi_4btoul(rcaplong->length);
1828                                 maxsector = scsi_8btou64(rcaplong->addr);
1829                         }
1830                         dasetgeom(periph, block_size, maxsector);
1831                         dp = &softc->params;
1832                         ksnprintf(announce_buf, sizeof(announce_buf),
1833                                 "%juMB (%ju %u byte sectors: %dH %dS/T %dC)",
1834                                 (uintmax_t) (((uintmax_t)dp->secsize *
1835                                 dp->sectors) / (1024*1024)),
1836                                 (uintmax_t)dp->sectors,
1837                                 dp->secsize, dp->heads, dp->secs_per_track,
1838                                 dp->cylinders);
1839                 } else {
1840                         int     error;
1841
1842                         announce_buf[0] = '\0';
1843
1844                         /*
1845                          * Retry any UNIT ATTENTION type errors.  They
1846                          * are expected at boot.
1847                          */
1848                         error = daerror(done_ccb, CAM_RETRY_SELTO,
1849                                         SF_RETRY_UA|SF_NO_PRINT);
1850                         if (error == ERESTART) {
1851                                 /*
1852                                  * A retry was scheuled, so
1853                                  * just return.
1854                                  */
1855                                 return;
1856                         } else if (error != 0) {
1857                                 struct scsi_sense_data *sense;
1858                                 int asc, ascq;
1859                                 int sense_key, error_code;
1860                                 int have_sense;
1861                                 cam_status status;
1862                                 struct ccb_getdev cgd;
1863
1864                                 /* Don't wedge this device's queue */
1865                                 status = done_ccb->ccb_h.status;
1866                                 if ((status & CAM_DEV_QFRZN) != 0)
1867                                         cam_release_devq(done_ccb->ccb_h.path,
1868                                                          /*relsim_flags*/0,
1869                                                          /*reduction*/0,
1870                                                          /*timeout*/0,
1871                                                          /*getcount_only*/0);
1872
1873
1874                                 xpt_setup_ccb(&cgd.ccb_h,
1875                                               done_ccb->ccb_h.path,
1876                                               /* priority */ 1);
1877                                 cgd.ccb_h.func_code = XPT_GDEV_TYPE;
1878                                 xpt_action((union ccb *)&cgd);
1879
1880                                 if (((csio->ccb_h.flags & CAM_SENSE_PHYS) != 0)
1881                                  || ((csio->ccb_h.flags & CAM_SENSE_PTR) != 0)
1882                                  || ((status & CAM_AUTOSNS_VALID) == 0))
1883                                         have_sense = FALSE;
1884                                 else
1885                                         have_sense = TRUE;
1886
1887                                 if (have_sense) {
1888                                         sense = &csio->sense_data;
1889                                         scsi_extract_sense(sense, &error_code,
1890                                                            &sense_key,
1891                                                            &asc, &ascq);
1892                                 }
1893                                 /*
1894                                  * Attach to anything that claims to be a
1895                                  * direct access or optical disk device,
1896                                  * as long as it doesn't return a "Logical
1897                                  * unit not supported" (0x25) error.
1898                                  */
1899                                 if ((have_sense) && (asc != 0x25)
1900                                  && (error_code == SSD_CURRENT_ERROR)) {
1901                                         const char *sense_key_desc;
1902                                         const char *asc_desc;
1903
1904                                         scsi_sense_desc(sense_key, asc, ascq,
1905                                                         &cgd.inq_data,
1906                                                         &sense_key_desc,
1907                                                         &asc_desc);
1908                                         ksnprintf(announce_buf,
1909                                             sizeof(announce_buf),
1910                                                 "Attempt to query device "
1911                                                 "size failed: %s, %s",
1912                                                 sense_key_desc,
1913                                                 asc_desc);
1914                                 } else {
1915                                         if (have_sense)
1916                                                 scsi_sense_print(
1917                                                         &done_ccb->csio);
1918                                         else {
1919                                                 xpt_print(periph->path,
1920                                                     "got CAM status %#x\n",
1921                                                     done_ccb->ccb_h.status);
1922                                         }
1923
1924                                         xpt_print(periph->path, "fatal error, "
1925                                             "failed to attach to device\n");
1926
1927                                         /*
1928                                          * Free up resources.
1929                                          */
1930                                         cam_periph_invalidate(periph);
1931                                 }
1932                         }
1933                 }
1934                 kfree(csio->data_ptr, M_SCSIDA);
1935                 if (announce_buf[0] != '\0') {
1936                         xpt_announce_periph(periph, announce_buf);
1937                         /*
1938                          * Create our sysctl variables, now that we know
1939                          * we have successfully attached.
1940                          */
1941                         taskqueue_enqueue(taskqueue_thread[mycpuid],
1942                             &softc->sysctl_task);
1943                 }
1944                 softc->state = DA_STATE_NORMAL;
1945                 /*
1946                  * Since our peripheral may be invalidated by an error
1947                  * above or an external event, we must release our CCB
1948                  * before releasing the probe lock on the peripheral.
1949                  * The peripheral will only go away once the last lock
1950                  * is removed, and we need it around for the CCB release
1951                  * operation.
1952                  */
1953                 xpt_release_ccb(done_ccb);
1954                 cam_periph_unhold(periph, 0);
1955                 return;
1956         }
1957         case DA_CCB_WAITING:
1958         {
1959                 /* Caller will release the CCB */
1960                 wakeup(&done_ccb->ccb_h.cbfcnp);
1961                 return;
1962         }
1963         case DA_CCB_DUMP:
1964                 /* No-op.  We're polling */
1965                 return;
1966         default:
1967                 break;
1968         }
1969         xpt_release_ccb(done_ccb);
1970 }
1971
1972 static int
1973 daerror(union ccb *ccb, u_int32_t cam_flags, u_int32_t sense_flags)
1974 {
1975         struct da_softc   *softc;
1976         struct cam_periph *periph;
1977         int error;
1978
1979         periph = xpt_path_periph(ccb->ccb_h.path);
1980         softc = (struct da_softc *)periph->softc;
1981
1982         /*
1983          * Automatically detect devices that do not support
1984          * READ(6)/WRITE(6) and upgrade to using 10 byte cdbs.
1985          */
1986         error = 0;
1987         if ((ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_INVALID) {
1988                 error = cmd6workaround(ccb);
1989         } else if (((ccb->ccb_h.status & CAM_STATUS_MASK) ==
1990                    CAM_SCSI_STATUS_ERROR)
1991          && (ccb->ccb_h.status & CAM_AUTOSNS_VALID)
1992          && (ccb->csio.scsi_status == SCSI_STATUS_CHECK_COND)
1993          && ((ccb->ccb_h.flags & CAM_SENSE_PHYS) == 0)
1994          && ((ccb->ccb_h.flags & CAM_SENSE_PTR) == 0)) {
1995                 int sense_key, error_code, asc, ascq;
1996
1997                 scsi_extract_sense(&ccb->csio.sense_data,
1998                                    &error_code, &sense_key, &asc, &ascq);
1999                 if (sense_key == SSD_KEY_ILLEGAL_REQUEST)
2000                         error = cmd6workaround(ccb);
2001         }
2002         if (error == ERESTART)
2003                 return (ERESTART);
2004
2005         /*
2006          * XXX
2007          * Until we have a better way of doing pack validation,
2008          * don't treat UAs as errors.
2009          */
2010         sense_flags |= SF_RETRY_UA;
2011         return(cam_periph_error(ccb, cam_flags, sense_flags,
2012                                 &softc->saved_ccb));
2013 }
2014
2015 static void
2016 daprevent(struct cam_periph *periph, int action)
2017 {
2018         struct  da_softc *softc;
2019         union   ccb *ccb;
2020         int     error;
2021
2022         softc = (struct da_softc *)periph->softc;
2023
2024         if (((action == PR_ALLOW)
2025           && (softc->flags & DA_FLAG_PACK_LOCKED) == 0)
2026          || ((action == PR_PREVENT)
2027           && (softc->flags & DA_FLAG_PACK_LOCKED) != 0)) {
2028                 return;
2029         }
2030
2031         ccb = cam_periph_getccb(periph, /*priority*/1);
2032
2033         scsi_prevent(&ccb->csio,
2034                      /*retries*/1,
2035                      /*cbcfp*/dadone,
2036                      MSG_SIMPLE_Q_TAG,
2037                      action,
2038                      SSD_FULL_SIZE,
2039                      5000);
2040
2041         error = cam_periph_runccb(ccb, /*error_routine*/NULL, CAM_RETRY_SELTO,
2042                                   SF_RETRY_UA, &softc->device_stats);
2043
2044         if (error == 0) {
2045                 if (action == PR_ALLOW)
2046                         softc->flags &= ~DA_FLAG_PACK_LOCKED;
2047                 else
2048                         softc->flags |= DA_FLAG_PACK_LOCKED;
2049         }
2050
2051         xpt_release_ccb(ccb);
2052 }
2053
2054 static int
2055 dagetcapacity(struct cam_periph *periph)
2056 {
2057         struct da_softc *softc;
2058         union ccb *ccb;
2059         struct scsi_read_capacity_data *rcap;
2060         struct scsi_read_capacity_data_16 *rcaplong;
2061         uint32_t block_len;
2062         uint64_t maxsector;
2063         int error;
2064
2065         softc = (struct da_softc *)periph->softc;
2066         block_len = 0;
2067         maxsector = 0;
2068         error = 0;
2069
2070         /* Do a read capacity */
2071         rcap = (struct scsi_read_capacity_data *)kmalloc(sizeof(*rcaplong),
2072                                                          M_SCSIDA, M_INTWAIT);
2073
2074         ccb = cam_periph_getccb(periph, /*priority*/1);
2075         scsi_read_capacity(&ccb->csio,
2076                            /*retries*/4,
2077                            /*cbfncp*/dadone,
2078                            MSG_SIMPLE_Q_TAG,
2079                            rcap,
2080                            SSD_FULL_SIZE,
2081                            /*timeout*/60000);
2082         ccb->ccb_h.ccb_bio = NULL;
2083
2084         error = cam_periph_runccb(ccb, daerror,
2085                                   /*cam_flags*/CAM_RETRY_SELTO,
2086                                   /*sense_flags*/SF_RETRY_UA,
2087                                   &softc->device_stats);
2088
2089         if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
2090                 cam_release_devq(ccb->ccb_h.path,
2091                                  /*relsim_flags*/0,
2092                                  /*reduction*/0,
2093                                  /*timeout*/0,
2094                                  /*getcount_only*/0);
2095
2096         if (error == 0) {
2097                 block_len = scsi_4btoul(rcap->length);
2098                 maxsector = scsi_4btoul(rcap->addr);
2099
2100                 if (maxsector != 0xffffffff)
2101                         goto done;
2102         } else
2103                 goto done;
2104
2105         rcaplong = (struct scsi_read_capacity_data_16 *)rcap;
2106
2107         scsi_read_capacity_16(&ccb->csio,
2108                               /*retries*/ 4,
2109                               /*cbfcnp*/ dadone,
2110                               /*tag_action*/ MSG_SIMPLE_Q_TAG,
2111                               /*lba*/ 0,
2112                               /*reladr*/ 0,
2113                               /*pmi*/ 0,
2114                               rcaplong,
2115                               /*sense_len*/ SSD_FULL_SIZE,
2116                               /*timeout*/ 60000);
2117         ccb->ccb_h.ccb_bio = NULL;
2118
2119         error = cam_periph_runccb(ccb, daerror,
2120                                   /*cam_flags*/CAM_RETRY_SELTO,
2121                                   /*sense_flags*/SF_RETRY_UA,
2122                                   &softc->device_stats);
2123
2124         if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
2125                 cam_release_devq(ccb->ccb_h.path,
2126                                  /*relsim_flags*/0,
2127                                  /*reduction*/0,
2128                                  /*timeout*/0,
2129                                  /*getcount_only*/0);
2130
2131         if (error == 0) {
2132                 block_len = scsi_4btoul(rcaplong->length);
2133                 maxsector = scsi_8btou64(rcaplong->addr);
2134         }
2135
2136 done:
2137
2138         if (error == 0)
2139                 dasetgeom(periph, block_len, maxsector);
2140
2141         xpt_release_ccb(ccb);
2142
2143         kfree(rcap, M_SCSIDA);
2144
2145         return (error);
2146 }
2147
2148 static void
2149 dasetgeom(struct cam_periph *periph, uint32_t block_len, uint64_t maxsector)
2150 {
2151         struct ccb_calc_geometry ccg;
2152         struct da_softc *softc;
2153         struct disk_params *dp;
2154
2155         softc = (struct da_softc *)periph->softc;
2156
2157         dp = &softc->params;
2158         dp->secsize = block_len;
2159         dp->sectors = maxsector + 1;
2160         /*
2161          * Have the controller provide us with a geometry
2162          * for this disk.  The only time the geometry
2163          * matters is when we boot and the controller
2164          * is the only one knowledgeable enough to come
2165          * up with something that will make this a bootable
2166          * device.
2167          */
2168         xpt_setup_ccb(&ccg.ccb_h, periph->path, /*priority*/1);
2169         ccg.ccb_h.func_code = XPT_CALC_GEOMETRY;
2170         ccg.block_size = dp->secsize;
2171         ccg.volume_size = dp->sectors;
2172         ccg.heads = 0;
2173         ccg.secs_per_track = 0;
2174         ccg.cylinders = 0;
2175         xpt_action((union ccb*)&ccg);
2176         if ((ccg.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
2177                 /*
2178                  * We don't know what went wrong here- but just pick
2179                  * a geometry so we don't have nasty things like divide
2180                  * by zero.
2181                  */
2182                 dp->heads = 255;
2183                 dp->secs_per_track = 255;
2184                 dp->cylinders = dp->sectors / (255 * 255);
2185                 if (dp->cylinders == 0) {
2186                         dp->cylinders = 1;
2187                 }
2188         } else {
2189                 dp->heads = ccg.heads;
2190                 dp->secs_per_track = ccg.secs_per_track;
2191                 dp->cylinders = ccg.cylinders;
2192         }
2193 }
2194
2195 static void
2196 dasendorderedtag(void *arg)
2197 {
2198         struct da_softc *softc = arg;
2199
2200         if (da_send_ordered) {
2201                 if ((softc->ordered_tag_count == 0)
2202                  && ((softc->flags & DA_FLAG_WENT_IDLE) == 0)) {
2203                         softc->flags |= DA_FLAG_NEED_OTAG;
2204                 }
2205                 if (softc->outstanding_cmds > 0)
2206                         softc->flags &= ~DA_FLAG_WENT_IDLE;
2207
2208                 softc->ordered_tag_count = 0;
2209         }
2210         /* Queue us up again */
2211         callout_reset(&softc->sendordered_c,
2212             (DA_DEFAULT_TIMEOUT * hz) / DA_ORDEREDTAG_INTERVAL,
2213             dasendorderedtag, softc);
2214 }
2215
2216 /*
2217  * Step through all DA peripheral drivers, and if the device is still open,
2218  * sync the disk cache to physical media.
2219  */
2220 static void
2221 dashutdown(void * arg, int howto)
2222 {
2223         struct cam_periph *periph;
2224         struct da_softc *softc;
2225
2226         TAILQ_FOREACH(periph, &dadriver.units, unit_links) {
2227                 union ccb ccb;
2228
2229                 cam_periph_lock(periph);
2230                 softc = (struct da_softc *)periph->softc;
2231
2232                 /*
2233                  * We only sync the cache if the drive is still open, and
2234                  * if the drive is capable of it..
2235                  */
2236                 if (((softc->flags & DA_FLAG_OPEN) == 0)
2237                  || (softc->quirks & DA_Q_NO_SYNC_CACHE)) {
2238                         cam_periph_unlock(periph);
2239                         continue;
2240                 }
2241
2242                 xpt_setup_ccb(&ccb.ccb_h, periph->path, /*priority*/1);
2243
2244                 ccb.ccb_h.ccb_state = DA_CCB_DUMP;
2245                 scsi_synchronize_cache(&ccb.csio,
2246                                        /*retries*/1,
2247                                        /*cbfcnp*/dadone,
2248                                        MSG_SIMPLE_Q_TAG,
2249                                        /*begin_lba*/0, /* whole disk */
2250                                        /*lb_count*/0,
2251                                        SSD_FULL_SIZE,
2252                                        60 * 60 * 1000);
2253
2254                 xpt_polled_action(&ccb);
2255
2256                 if ((ccb.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
2257                         if (((ccb.ccb_h.status & CAM_STATUS_MASK) ==
2258                              CAM_SCSI_STATUS_ERROR)
2259                          && (ccb.csio.scsi_status == SCSI_STATUS_CHECK_COND)){
2260                                 int error_code, sense_key, asc, ascq;
2261
2262                                 scsi_extract_sense(&ccb.csio.sense_data,
2263                                                    &error_code, &sense_key,
2264                                                    &asc, &ascq);
2265
2266                                 if (sense_key != SSD_KEY_ILLEGAL_REQUEST)
2267                                         scsi_sense_print(&ccb.csio);
2268                         } else {
2269                                 xpt_print(periph->path, "Synchronize "
2270                                     "cache failed, status == 0x%x, scsi status "
2271                                     "== 0x%x\n", ccb.ccb_h.status,
2272                                     ccb.csio.scsi_status);
2273                         }
2274                 }
2275
2276                 if ((ccb.ccb_h.status & CAM_DEV_QFRZN) != 0)
2277                         cam_release_devq(ccb.ccb_h.path,
2278                                          /*relsim_flags*/0,
2279                                          /*reduction*/0,
2280                                          /*timeout*/0,
2281                                          /*getcount_only*/0);
2282
2283                 cam_periph_unlock(periph);
2284         }
2285 }
2286
2287 #else /* !_KERNEL */
2288
2289 /*
2290  * XXX This is only left out of the kernel build to silence warnings.  If,
2291  * for some reason this function is used in the kernel, the ifdefs should
2292  * be moved so it is included both in the kernel and userland.
2293  */
2294 void
2295 scsi_format_unit(struct ccb_scsiio *csio, u_int32_t retries,
2296                  void (*cbfcnp)(struct cam_periph *, union ccb *),
2297                  u_int8_t tag_action, u_int8_t byte2, u_int16_t ileave,
2298                  u_int8_t *data_ptr, u_int32_t dxfer_len, u_int8_t sense_len,
2299                  u_int32_t timeout)
2300 {
2301         struct scsi_format_unit *scsi_cmd;
2302
2303         scsi_cmd = (struct scsi_format_unit *)&csio->cdb_io.cdb_bytes;
2304         scsi_cmd->opcode = FORMAT_UNIT;
2305         scsi_cmd->byte2 = byte2;
2306         scsi_ulto2b(ileave, scsi_cmd->interleave);
2307
2308         cam_fill_csio(csio,
2309                       retries,
2310                       cbfcnp,
2311                       /*flags*/ (dxfer_len > 0) ? CAM_DIR_OUT : CAM_DIR_NONE,
2312                       tag_action,
2313                       data_ptr,
2314                       dxfer_len,
2315                       sense_len,
2316                       sizeof(*scsi_cmd),
2317                       timeout);
2318 }
2319
2320 #endif /* _KERNEL */