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 1.52 2007/12/02 16:38:11 pavalos Exp $
  30  */
  31
  32 #ifdef _KERNEL
  33 #include "opt_hw_wdog.h"
  34 #endif /* _KERNEL */
  35
  36 #include <sys/param.h>
  37 #include <sys/bootmaj.h>
  38
  39 #ifdef _KERNEL
  40 #include <sys/systm.h>
  41 #include <sys/kernel.h>
  42 #include <sys/buf.h>
  43 #include <sys/sysctl.h>
  44 #include <sys/taskqueue.h>
  45 #endif /* _KERNEL */
  46
  47 #include <sys/devicestat.h>
  48 #include <sys/conf.h>
  49 #ifdef _KERNEL
  50 #include <sys/disk.h>
  51 #include <sys/dtype.h>
  52 #include <sys/eventhandler.h>
  53 #include <sys/malloc.h>
  54 #include <sys/cons.h>
  55 #include <sys/proc.h>
  56 #endif
  57 #include <sys/buf2.h>
  58 #ifdef _KERNEL
  59 #include <sys/thread2.h>
  60 #endif
  61
  62 #include <machine/md_var.h>
  63
  64 #ifdef _KERNEL
  65 #include <vm/vm.h>
  66 #include <vm/pmap.h>
  67 #endif
  68
  69 #ifndef _KERNEL
  70 #include <stdio.h>
  71 #include <string.h>
  72 #endif /* _KERNEL */
  73
  74 #include "../cam.h"
  75 #include "../cam_ccb.h"
  76 #include "../cam_extend.h"
  77 #include "../cam_periph.h"
  78 #include "../cam_xpt_periph.h"
  79
  80 #include "scsi_message.h"
  81
  82 #ifndef _KERNEL
  83 #include "scsi_da.h"
  84 #endif /* !_KERNEL */
  85
  86 #ifdef _KERNEL
  87 typedef enum {
  88         DA_STATE_PROBE,
  89         DA_STATE_PROBE2,
  90         DA_STATE_NORMAL
  91 } da_state;
  92
  93 typedef enum {
  94         DA_FLAG_PACK_INVALID    = 0x001,
  95         DA_FLAG_NEW_PACK        = 0x002,
  96         DA_FLAG_PACK_LOCKED     = 0x004,
  97         DA_FLAG_PACK_REMOVABLE  = 0x008,
  98         DA_FLAG_TAGGED_QUEUING  = 0x010,
  99         DA_FLAG_NEED_OTAG       = 0x020,
 100         DA_FLAG_WENT_IDLE       = 0x040,
 101         DA_FLAG_RETRY_UA        = 0x080,
 102         DA_FLAG_OPEN            = 0x100,
 103         DA_FLAG_SCTX_INIT       = 0x200
 104 } da_flags;
 105
 106 typedef enum {
 107         DA_Q_NONE               = 0x00,
 108         DA_Q_NO_SYNC_CACHE      = 0x01,
 109         DA_Q_NO_6_BYTE          = 0x02,
 110         DA_Q_NO_PREVENT         = 0x04
 111 } da_quirks;
 112
 113 typedef enum {
 114         DA_CCB_PROBE            = 0x01,
 115         DA_CCB_PROBE2           = 0x02,
 116         DA_CCB_BUFFER_IO        = 0x03,
 117         DA_CCB_WAITING          = 0x04,
 118         DA_CCB_DUMP             = 0x05,
 119         DA_CCB_TYPE_MASK        = 0x0F,
 120         DA_CCB_RETRY_UA         = 0x10
 121 } da_ccb_state;
 122
 123 /* Offsets into our private area for storing information */
 124 #define ccb_state       ppriv_field0
 125 #define ccb_bio         ppriv_ptr1
 126
 127 struct disk_params {
 128         u_int8_t  heads;
 129         u_int32_t cylinders;
 130         u_int8_t  secs_per_track;
 131         u_int32_t secsize;      /* Number of bytes/sector */
 132         u_int64_t sectors;      /* total number sectors */
 133 };
 134
 135 struct da_softc {
 136         struct   bio_queue_head bio_queue;
 137         struct   devstat device_stats;
 138         SLIST_ENTRY(da_softc) links;
 139         LIST_HEAD(, ccb_hdr) pending_ccbs;
 140         da_state state;
 141         da_flags flags;
 142         da_quirks quirks;
 143         int      minimum_cmd_size;
 144         int      ordered_tag_count;
 145         int      outstanding_cmds;
 146         struct   disk_params params;
 147         struct   disk disk;
 148         union    ccb saved_ccb;
 149         struct task             sysctl_task;
 150         struct sysctl_ctx_list  sysctl_ctx;
 151         struct sysctl_oid       *sysctl_tree;
 152 };
 153
 154 struct da_quirk_entry {
 155         struct scsi_inquiry_pattern inq_pat;
 156         da_quirks quirks;
 157 };
 158
 159 static const char quantum[] = "QUANTUM";
 160 static const char microp[] = "MICROP";
 161
 162 static struct da_quirk_entry da_quirk_table[] =
 163 {
 164         /* SPI, FC devices */
 165         {
 166                 /*
 167                  * Fujitsu M2513A MO drives.
 168                  * Tested devices: M2513A2 firmware versions 1200 & 1300.
 169                  * (dip switch selects whether T_DIRECT or T_OPTICAL device)
 170                  * Reported by: W.Scholten <whs@xs4all.nl>
 171                  */
 172                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "FUJITSU", "M2513A", "*"},
 173                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 174         },
 175         {
 176                 /* See above. */
 177                 {T_OPTICAL, SIP_MEDIA_REMOVABLE, "FUJITSU", "M2513A", "*"},
 178                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 179         },
 180         {
 181                 /*
 182                  * This particular Fujitsu drive doesn't like the
 183                  * synchronize cache command.
 184                  * Reported by: Tom Jackson <toj@gorilla.net>
 185                  */
 186                 {T_DIRECT, SIP_MEDIA_FIXED, "FUJITSU", "M2954*", "*"},
 187                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 188         },
 189         {
 190                 /*
 191                  * This drive doesn't like the synchronize cache command
 192                  * either.  Reported by: Matthew Jacob <mjacob@feral.com>
 193                  * in NetBSD PR kern/6027, August 24, 1998.
 194                  */
 195                 {T_DIRECT, SIP_MEDIA_FIXED, microp, "2217*", "*"},
 196                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 197         },
 198         {
 199                 /*
 200                  * This drive doesn't like the synchronize cache command
 201                  * either.  Reported by: Hellmuth Michaelis (hm@kts.org)
 202                  * (PR 8882).
 203                  */
 204                 {T_DIRECT, SIP_MEDIA_FIXED, microp, "2112*", "*"},
 205                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 206         },
 207         {
 208                 /*
 209                  * Doesn't like the synchronize cache command.
 210                  * Reported by: Blaz Zupan <blaz@gold.amis.net>
 211                  */
 212                 {T_DIRECT, SIP_MEDIA_FIXED, "NEC", "D3847*", "*"},
 213                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 214         },
 215         {
 216                 /*
 217                  * Doesn't like the synchronize cache command.
 218                  * Reported by: Blaz Zupan <blaz@gold.amis.net>
 219                  */
 220                 {T_DIRECT, SIP_MEDIA_FIXED, quantum, "MAVERICK 540S", "*"},
 221                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 222         },
 223         {
 224                 /*
 225                  * Doesn't like the synchronize cache command.
 226                  */
 227                 {T_DIRECT, SIP_MEDIA_FIXED, quantum, "LPS525S", "*"},
 228                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 229         },
 230         {
 231                 /*
 232                  * Doesn't like the synchronize cache command.
 233                  * Reported by: walter@pelissero.de
 234                  */
 235                 {T_DIRECT, SIP_MEDIA_FIXED, quantum, "LPS540S", "*"},
 236                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 237         },
 238         {
 239                 /*
 240                  * Doesn't work correctly with 6 byte reads/writes.
 241                  * Returns illegal request, and points to byte 9 of the
 242                  * 6-byte CDB.
 243                  * Reported by:  Adam McDougall <bsdx@spawnet.com>
 244                  */
 245                 {T_DIRECT, SIP_MEDIA_FIXED, quantum, "VIKING 4*", "*"},
 246                 /*quirks*/ DA_Q_NO_6_BYTE
 247         },
 248         {
 249                 /* See above. */
 250                 {T_DIRECT, SIP_MEDIA_FIXED, quantum, "VIKING 2*", "*"},
 251                 /*quirks*/ DA_Q_NO_6_BYTE
 252         },
 253         {
 254                 /*
 255                  * Doesn't like the synchronize cache command.
 256                  * Reported by: walter@pelissero.de
 257                  */
 258                 {T_DIRECT, SIP_MEDIA_FIXED, "CONNER", "CP3500*", "*"},
 259                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 260         },
 261         {
 262                 /*
 263                  * The CISS RAID controllers do not support SYNC_CACHE
 264                  */
 265                 {T_DIRECT, SIP_MEDIA_FIXED, "COMPAQ", "RAID*", "*"},
 266                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 267         },
 268         /* USB mass storage devices supported by umass(4) */
 269         {
 270                 /*
 271                  * EXATELECOM (Sigmatel) i-Bead 100/105 USB Flash MP3 Player
 272                  * PR: kern/51675
 273                  */
 274                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "EXATEL", "i-BEAD10*", "*"},
 275                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 276         },
 277         {
 278                 /*
 279                  * Power Quotient Int. (PQI) USB flash key
 280                  * PR: kern/53067
 281                  */
 282                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Generic*", "USB Flash Disk*",
 283                 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 284         },
 285         {
 286                 /*
 287                  * Creative Nomad MUVO mp3 player (USB)
 288                  * PR: kern/53094
 289                  */
 290                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "CREATIVE", "NOMAD_MUVO", "*"},
 291                 /*quirks*/ DA_Q_NO_SYNC_CACHE|DA_Q_NO_PREVENT
 292         },
 293         {
 294                 /*
 295                  * Jungsoft NEXDISK USB flash key
 296                  * PR: kern/54737
 297                  */
 298                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "JUNGSOFT", "NEXDISK*", "*"},
 299                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 300         },
 301         {
 302                 /*
 303                  * FreeDik USB Mini Data Drive
 304                  * PR: kern/54786
 305                  */
 306                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "FreeDik*", "Mini Data Drive",
 307                 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 308         },
 309         {
 310                 /*
 311                  * Sigmatel USB Flash MP3 Player
 312                  * PR: kern/57046
 313                  */
 314                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "SigmaTel", "MSCN", "*"},
 315                 /*quirks*/ DA_Q_NO_SYNC_CACHE|DA_Q_NO_PREVENT
 316         },
 317         {
 318                 /*
 319                  * Neuros USB Digital Audio Computer
 320                  * PR: kern/63645
 321                  */
 322                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "NEUROS", "dig. audio comp.",
 323                 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 324         },
 325         {
 326                 /*
 327                  * SEAGRAND NP-900 MP3 Player
 328                  * PR: kern/64563
 329                  */
 330                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "SEAGRAND", "NP-900*", "*"},
 331                 /*quirks*/ DA_Q_NO_SYNC_CACHE|DA_Q_NO_PREVENT
 332         },
 333         {
 334                 /*
 335                  * iRiver iFP MP3 player (with UMS Firmware)
 336                  * PR: kern/54881, i386/63941, kern/66124
 337                  */
 338                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "iRiver", "iFP*", "*"},
 339                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 340         },
 341         {
 342                 /*
 343                  * Frontier Labs NEX IA+ Digital Audio Player, rev 1.10/0.01
 344                  * PR: kern/70158
 345                  */
 346                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "FL" , "Nex*", "*"},
 347                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 348         },
 349         {
 350                 /*
 351                  * ZICPlay USB MP3 Player with FM
 352                  * PR: kern/75057
 353                  */
 354                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "ACTIONS*" , "USB DISK*", "*"},
 355                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 356         },
 357         {
 358                 /*
 359                  * TEAC USB floppy mechanisms
 360                  */
 361                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "TEAC" , "FD-05*", "*"},
 362                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 363         },
 364         {
 365                 /*
 366                  * Kingston DataTraveler II+ USB Pen-Drive.
 367                  * Reported by: Pawel Jakub Dawidek <pjd@FreeBSD.org>
 368                  */
 369                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Kingston" , "DataTraveler II+",
 370                 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 371         },
 372         {
 373                 /*
 374                  * Motorola E398 Mobile Phone (TransFlash memory card).
 375                  * Reported by: Wojciech A. Koszek <dunstan@FreeBSD.czest.pl>
 376                  * PR: usb/89889
 377                  */
 378                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Motorola" , "Motorola Phone",
 379                 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 380         },
 381         {
 382                 /*
 383                  * Qware BeatZkey! Pro
 384                  * PR: usb/79164
 385                  */
 386                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "GENERIC", "USB DISK DEVICE",
 387                 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 388         },
 389         {
 390                 /*
 391                  * Time DPA20B 1GB MP3 Player
 392                  * PR: usb/81846
 393                  */
 394                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "USB2.0*", "(FS) FLASH DISK*",
 395                 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 396         },
 397         {
 398                 /*
 399                  * Samsung USB key 128Mb
 400                  * PR: usb/90081
 401                  */
 402                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "USB-DISK", "FreeDik-FlashUsb",
 403                 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 404         },
 405         {
 406                 /*
 407                  * Kingston DataTraveler 2.0 USB Flash memory.
 408                  * PR: usb/89196
 409                  */
 410                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Kingston", "DataTraveler 2.0",
 411                 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 412         },
 413         {
 414                 /*
 415                  * Creative MUVO Slim mp3 player (USB)
 416                  * PR: usb/86131
 417                  */
 418                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "CREATIVE", "MuVo Slim",
 419                 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE|DA_Q_NO_PREVENT
 420                 },
 421         {
 422                 /*
 423                  * United MP5512 Portable MP3 Player (2-in-1 USB DISK/MP3)
 424                  * PR: usb/80487
 425                  */
 426                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Generic*", "MUSIC DISK",
 427                 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 428         },
 429         {
 430                 /*
 431                  * SanDisk Micro Cruzer 128MB
 432                  * PR: usb/75970
 433                  */
 434                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "SanDisk" , "Micro Cruzer",
 435                 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 436         },
 437         {
 438                 /*
 439                  * TOSHIBA TransMemory USB sticks
 440                  * PR: kern/94660
 441                  */
 442                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "TOSHIBA", "TransMemory",
 443                 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 444         },
 445         {
 446                 /*
 447                  * PNY USB Flash keys
 448                  * PR: usb/75578, usb/72344, usb/65436
 449                  */
 450                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "*" , "USB DISK*",
 451                 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 452         },
 453         {
 454                 /*
 455                  * Genesys 6-in-1 Card Reader
 456                  * PR: usb/94647
 457                  */
 458                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Generic*", "STORAGE DEVICE*",
 459                 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 460         },
 461         {
 462                 /*
 463                  * Rekam Digital CAMERA
 464                  * PR: usb/98713
 465                  */
 466                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "CAMERA*", "4MP-9J6*",
 467                 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 468         },
 469         {
 470                 /*
 471                  * iRiver H10 MP3 player
 472                  * PR: usb/102547
 473                  */
 474                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "iriver", "H10*",
 475                 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 476         },
 477         {
 478                 /*
 479                  * iRiver U10 MP3 player
 480                  * PR: usb/92306
 481                  */
 482                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "iriver", "U10*",
 483                 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 484         },
 485         {
 486                 /*
 487                  * X-Micro Flash Disk
 488                  * PR: usb/96901
 489                  */
 490                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "X-Micro", "Flash Disk",
 491                 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 492         },
 493         {
 494                 /*
 495                  * EasyMP3 EM732X USB 2.0 Flash MP3 Player
 496                  * PR: usb/96546
 497                  */
 498                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "EM732X", "MP3 Player*",
 499                 "1.0"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 500         },
 501         {
 502                 /*
 503                  * Denver MP3 player
 504                  * PR: usb/107101
 505                  */
 506                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "DENVER", "MP3 PLAYER",
 507                  "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 508         },
 509         {
 510                 /*
 511                  * Philips USB Key Audio KEY013
 512                  * PR: usb/68412
 513                  */
 514                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "PHILIPS", "Key*", "*"},
 515                 /*quirks*/ DA_Q_NO_SYNC_CACHE | DA_Q_NO_PREVENT
 516         },
 517         {
 518                 /*
 519                  * JNC MP3 Player
 520                  * PR: usb/94439
 521                  */
 522                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "JNC*" , "MP3 Player*",
 523                  "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 524         },
 525         {
 526                 /*
 527                  * SAMSUNG MP0402H
 528                  * PR: usb/108427
 529                  */
 530                 {T_DIRECT, SIP_MEDIA_FIXED, "SAMSUNG", "MP0402H", "*"},
 531                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 532         },
 533         {
 534                 /*
 535                  * I/O Magic USB flash - Giga Bank
 536                  * PR: usb/108810
 537                  */
 538                 {T_DIRECT, SIP_MEDIA_FIXED, "GS-Magic", "stor*", "*"},
 539                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 540         },
 541         {
 542                 /*
 543                  * JoyFly 128mb USB Flash Drive
 544                  * PR: 96133
 545                  */
 546                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "USB 2.0", "Flash Disk*",
 547                  "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 548         },
 549         {
 550                 /*
 551                  * ChipsBnk usb stick
 552                  * PR: 103702
 553                  */
 554                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "ChipsBnk", "USB*",
 555                  "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 556         },
 557 };
 558
 559 static  d_open_t        daopen;
 560 static  d_close_t       daclose;
 561 static  d_strategy_t    dastrategy;
 562 static  d_dump_t        dadump;
 563 static  periph_init_t   dainit;
 564 static  void            daasync(void *callback_arg, u_int32_t code,
 565                                 struct cam_path *path, void *arg);
 566 static  int             dacmdsizesysctl(SYSCTL_HANDLER_ARGS);
 567 static  periph_ctor_t   daregister;
 568 static  periph_dtor_t   dacleanup;
 569 static  periph_start_t  dastart;
 570 static  periph_oninv_t  daoninvalidate;
 571 static  void            dadone(struct cam_periph *periph,
 572                                union ccb *done_ccb);
 573 static  int             daerror(union ccb *ccb, u_int32_t cam_flags,
 574                                 u_int32_t sense_flags);
 575 static void             daprevent(struct cam_periph *periph, int action);
 576 static int              dagetcapacity(struct cam_periph *periph);
 577 static void             dasetgeom(struct cam_periph *periph, uint32_t block_len,
 578                                   uint64_t maxsector);
 579
 580 static timeout_t        dasendorderedtag;
 581 static void             dashutdown(void *arg, int howto);
 582
 583 #ifndef DA_DEFAULT_TIMEOUT
 584 #define DA_DEFAULT_TIMEOUT 60   /* Timeout in seconds */
 585 #endif
 586
 587 #ifndef DA_DEFAULT_RETRY
 588 #define DA_DEFAULT_RETRY        4
 589 #endif
 590
 591 #ifndef DA_DEFAULT_SEND_ORDERED
 592 #define DA_DEFAULT_SEND_ORDERED 1
 593 #endif
 594
 595 static int da_retry_count = DA_DEFAULT_RETRY;
 596 static int da_default_timeout = DA_DEFAULT_TIMEOUT;
 597 static int da_send_ordered = DA_DEFAULT_SEND_ORDERED;
 598 static struct callout dasendorderedtag_ch;
 599
 600 SYSCTL_NODE(_kern_cam, OID_AUTO, da, CTLFLAG_RD, 0,
 601             "CAM Direct Access Disk driver");
 602 SYSCTL_INT(_kern_cam_da, OID_AUTO, retry_count, CTLFLAG_RW,
 603            &da_retry_count, 0, "Normal I/O retry count");
 604 TUNABLE_INT("kern.cam.da.retry_count", &da_retry_count);
 605 SYSCTL_INT(_kern_cam_da, OID_AUTO, default_timeout, CTLFLAG_RW,
 606            &da_default_timeout, 0, "Normal I/O timeout (in seconds)");
 607 TUNABLE_INT("kern.cam.da.default_timeout", &da_default_timeout);
 608 SYSCTL_INT(_kern_cam_da, OID_AUTO, da_send_ordered, CTLFLAG_RW,
 609            &da_send_ordered, 0, "Send Ordered Tags");
 610 TUNABLE_INT("kern.cam.da.da_send_ordered", &da_send_ordered);
 611
 612 /*
 613  * DA_ORDEREDTAG_INTERVAL determines how often, relative
 614  * to the default timeout, we check to see whether an ordered
 615  * tagged transaction is appropriate to prevent simple tag
 616  * starvation.  Since we'd like to ensure that there is at least
 617  * 1/2 of the timeout length left for a starved transaction to
 618  * complete after we've sent an ordered tag, we must poll at least
 619  * four times in every timeout period.  This takes care of the worst
 620  * case where a starved transaction starts during an interval that
 621  * meets the requirement "don't send an ordered tag" test so it takes
 622  * us two intervals to determine that a tag must be sent.
 623  */
 624 #ifndef DA_ORDEREDTAG_INTERVAL
 625 #define DA_ORDEREDTAG_INTERVAL 4
 626 #endif
 627
 628 static struct periph_driver dadriver =
 629 {
 630         dainit, "da",
 631         TAILQ_HEAD_INITIALIZER(dadriver.units), /* generation */ 0
 632 };
 633
 634 PERIPHDRIVER_DECLARE(da, dadriver);
 635
 636 static struct dev_ops da_ops = {
 637         { "da", DA_CDEV_MAJOR, D_DISK },
 638         .d_open =       daopen,
 639         .d_close =      daclose,
 640         .d_read =       physread,
 641         .d_write =      physwrite,
 642         .d_strategy =   dastrategy,
 643         .d_dump =       dadump
 644 };
 645
 646 static SLIST_HEAD(,da_softc) softc_list;
 647 static struct extend_array *daperiphs;
 648
 649 static int
 650 daopen(struct dev_open_args *ap)
 651 {
 652         cdev_t dev = ap->a_head.a_dev;
 653         struct cam_periph *periph;
 654         struct da_softc *softc;
 655         struct disk_info info;
 656         int unit;
 657         int error;
 658
 659         unit = dkunit(dev);
 660         crit_enter();
 661         periph = cam_extend_get(daperiphs, unit);
 662         if (periph == NULL) {
 663                 crit_exit();
 664                 return (ENXIO);
 665         }
 666
 667         softc = (struct da_softc *)periph->softc;
 668
 669         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE,
 670             ("daopen: dev=%s (unit %d)\n", devtoname(dev),
 671              unit));
 672
 673         if ((error = cam_periph_lock(periph, PCATCH)) != 0) {
 674                 crit_exit();
 675                 return (error); /* error code from tsleep */
 676         }
 677
 678         if ((softc->flags & DA_FLAG_OPEN) == 0) {
 679                 if (cam_periph_acquire(periph) != CAM_REQ_CMP) {
 680                         crit_exit();
 681                         return(ENXIO);
 682                 }
 683                 softc->flags |= DA_FLAG_OPEN;
 684         }
 685
 686         if ((softc->flags & DA_FLAG_PACK_INVALID) != 0) {
 687                 /* Invalidate our pack information. */
 688                 disk_invalidate(&softc->disk);
 689                 softc->flags &= ~DA_FLAG_PACK_INVALID;
 690         }
 691         crit_exit();
 692
 693         error = dagetcapacity(periph);
 694
 695 #if 0
 696         /* Do a read capacity */
 697         {
 698                 struct scsi_read_capacity_data *rcap;
 699                 union  ccb *ccb;
 700
 701                 rcap = kmalloc(sizeof(*rcap), M_TEMP, M_INTWAIT | M_ZERO);
 702
 703                 ccb = cam_periph_getccb(periph, /*priority*/1);
 704                 scsi_read_capacity(&ccb->csio,
 705                                    /*retries*/1,
 706                                    /*cbfncp*/dadone,
 707                                    MSG_SIMPLE_Q_TAG,
 708                                    rcap,
 709                                    SSD_FULL_SIZE,
 710                                    /*timeout*/60000);
 711                 ccb->ccb_h.ccb_bio = NULL;
 712
 713                 error = cam_periph_runccb(ccb, daerror, /*cam_flags*/0,
 714                                           /*sense_flags*/SF_RETRY_UA |
 715                                                          SF_RETRY_SELTO,
 716                                           &softc->device_stats);
 717
 718                 xpt_release_ccb(ccb);
 719
 720                 if (error == 0) {
 721                         dasetgeom(periph, rcap);
 722                 }
 723
 724                 kfree(rcap, M_TEMP);
 725         }
 726 #endif
 727
 728         if (error == 0) {
 729                 struct ccb_getdev cgd;
 730
 731                 /* Build disk information structure */
 732                 bzero(&info, sizeof(info));
 733                 info.d_type = DTYPE_SCSI;
 734
 735                 /*
 736                  * Grab the inquiry data to get the vendor and product names.
 737                  * Put them in the typename and packname for the label.
 738                  */
 739                 xpt_setup_ccb(&cgd.ccb_h, periph->path, /*priority*/ 1);
 740                 cgd.ccb_h.func_code = XPT_GDEV_TYPE;
 741                 xpt_action((union ccb *)&cgd);
 742
 743 #if 0
 744                 strncpy(label->d_typename, cgd.inq_data.vendor,
 745                         min(SID_VENDOR_SIZE, sizeof(label->d_typename)));
 746                 strncpy(label->d_packname, cgd.inq_data.product,
 747                         min(SID_PRODUCT_SIZE, sizeof(label->d_packname)));
 748 #endif
 749
 750                 /*
 751                  * Mandatory fields
 752                  */
 753                 info.d_media_blksize = softc->params.secsize;
 754                 info.d_media_blocks = softc->params.sectors;
 755                 info.d_media_size = 0;
 756
 757                 /*
 758                  * Optional fields
 759                  */
 760                 info.d_secpertrack = softc->params.secs_per_track;
 761                 info.d_nheads = softc->params.heads;
 762                 info.d_ncylinders = softc->params.cylinders;
 763                 info.d_secpercyl = softc->params.heads *
 764                                    softc->params.secs_per_track;
 765                 disk_setdiskinfo(&softc->disk, &info);
 766
 767                 /*
 768                  * Check to see whether or not the blocksize is set yet.
 769                  * If it isn't, set it and then clear the blocksize
 770                  * unavailable flag for the device statistics.
 771                  */
 772                 if ((softc->device_stats.flags & DEVSTAT_BS_UNAVAILABLE) != 0){
 773                         softc->device_stats.block_size = softc->params.secsize;
 774                         softc->device_stats.flags &= ~DEVSTAT_BS_UNAVAILABLE;
 775                 }
 776         }
 777
 778         if (error == 0) {
 779                 if ((softc->flags & DA_FLAG_PACK_REMOVABLE) != 0 &&
 780                     (softc->quirks & DA_Q_NO_PREVENT) == 0)
 781                         daprevent(periph, PR_PREVENT);
 782         } else {
 783                 softc->flags &= ~DA_FLAG_OPEN;
 784                 cam_periph_release(periph);
 785         }
 786         cam_periph_unlock(periph);
 787         return (error);
 788 }
 789
 790 static int
 791 daclose(struct dev_close_args *ap)
 792 {
 793         cdev_t dev = ap->a_head.a_dev;
 794         struct  cam_periph *periph;
 795         struct  da_softc *softc;
 796         int     unit;
 797         int     error;
 798
 799         unit = dkunit(dev);
 800         periph = cam_extend_get(daperiphs, unit);
 801         if (periph == NULL)
 802                 return (ENXIO);
 803
 804         softc = (struct da_softc *)periph->softc;
 805
 806         if ((error = cam_periph_lock(periph, 0)) != 0) {
 807                 return (error); /* error code from tsleep */
 808         }
 809
 810         if ((softc->quirks & DA_Q_NO_SYNC_CACHE) == 0) {
 811                 union   ccb *ccb;
 812
 813                 ccb = cam_periph_getccb(periph, /*priority*/1);
 814
 815                 scsi_synchronize_cache(&ccb->csio,
 816                                        /*retries*/1,
 817                                        /*cbfcnp*/dadone,
 818                                        MSG_SIMPLE_Q_TAG,
 819                                        /*begin_lba*/0,/* Cover the whole disk */
 820                                        /*lb_count*/0,
 821                                        SSD_FULL_SIZE,
 822                                        5 * 60 * 1000);
 823
 824                 cam_periph_runccb(ccb, /*error_routine*/NULL, /*cam_flags*/0,
 825                                   /*sense_flags*/SF_RETRY_UA,
 826                                   &softc->device_stats);
 827
 828                 if ((ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
 829                         if ((ccb->ccb_h.status & CAM_STATUS_MASK) ==
 830                              CAM_SCSI_STATUS_ERROR) {
 831                                 int asc, ascq;
 832                                 int sense_key, error_code;
 833
 834                                 scsi_extract_sense(&ccb->csio.sense_data,
 835                                                    &error_code,
 836                                                    &sense_key,
 837                                                    &asc, &ascq);
 838                                 if (sense_key != SSD_KEY_ILLEGAL_REQUEST)
 839                                         scsi_sense_print(&ccb->csio);
 840                         } else {
 841                                 xpt_print_path(periph->path);
 842                                 kprintf("Synchronize cache failed, status "
 843                                        "== 0x%x, scsi status == 0x%x\n",
 844                                        ccb->csio.ccb_h.status,
 845                                        ccb->csio.scsi_status);
 846                         }
 847                 }
 848
 849                 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
 850                         cam_release_devq(ccb->ccb_h.path,
 851                                          /*relsim_flags*/0,
 852                                          /*reduction*/0,
 853                                          /*timeout*/0,
 854                                          /*getcount_only*/0);
 855
 856                 xpt_release_ccb(ccb);
 857
 858         }
 859
 860         if ((softc->flags & DA_FLAG_PACK_REMOVABLE) != 0) {
 861                 if ((softc->quirks & DA_Q_NO_PREVENT) == 0)
 862                         daprevent(periph, PR_ALLOW);
 863                 /*
 864                  * If we've got removeable media, mark the blocksize as
 865                  * unavailable, since it could change when new media is
 866                  * inserted.
 867                  */
 868                 softc->device_stats.flags |= DEVSTAT_BS_UNAVAILABLE;
 869         }
 870
 871         /*
 872          * Don't compound any ref counting software bugs with more.
 873          */
 874         if (softc->flags & DA_FLAG_OPEN) {
 875                 softc->flags &= ~DA_FLAG_OPEN;
 876                 cam_periph_release(periph);
 877         } else {
 878                 xpt_print_path(periph->path);
 879                 kprintf("daclose() called on an already closed device!\n");
 880         }
 881         cam_periph_unlock(periph);
 882         return (0);
 883 }
 884
 885 /*
 886  * Actually translate the requested transfer into one the physical driver
 887  * can understand.  The transfer is described by a buf and will include
 888  * only one physical transfer.
 889  */
 890 static int
 891 dastrategy(struct dev_strategy_args *ap)
 892 {
 893         cdev_t dev = ap->a_head.a_dev;
 894         struct bio *bio = ap->a_bio;
 895         struct buf *bp = bio->bio_buf;
 896         struct cam_periph *periph;
 897         struct da_softc *softc;
 898         u_int  unit;
 899         u_int  part;
 900
 901         unit = dkunit(dev);
 902         part = dkpart(dev);
 903         periph = cam_extend_get(daperiphs, unit);
 904         if (periph == NULL) {
 905                 bp->b_error = ENXIO;
 906                 goto bad;
 907         }
 908         softc = (struct da_softc *)periph->softc;
 909 #if 0
 910         /*
 911          * check it's not too big a transfer for our adapter
 912          */
 913         scsi_minphys(bp, &sd_switch);
 914 #endif
 915
 916         /*
 917          * Mask interrupts so that the pack cannot be invalidated until
 918          * after we are in the queue.  Otherwise, we might not properly
 919          * clean up one of the buffers.
 920          */
 921         crit_enter();
 922
 923         /*
 924          * If the device has been made invalid, error out
 925          */
 926         if ((softc->flags & DA_FLAG_PACK_INVALID)) {
 927                 crit_exit();
 928                 bp->b_error = ENXIO;
 929                 goto bad;
 930         }
 931
 932         /*
 933          * Place it in the queue of disk activities for this disk
 934          */
 935         bioqdisksort(&softc->bio_queue, bio);
 936
 937         crit_exit();
 938
 939         /*
 940          * Schedule ourselves for performing the work.
 941          */
 942         xpt_schedule(periph, /* XXX priority */1);
 943
 944         return(0);
 945 bad:
 946         bp->b_flags |= B_ERROR;
 947
 948         /*
 949          * Correctly set the buf to indicate a completed xfer
 950          */
 951         bp->b_resid = bp->b_bcount;
 952         biodone(bio);
 953         return(0);
 954 }
 955
 956 static int
 957 dadump(struct dev_dump_args *ap)
 958 {
 959         cdev_t dev = ap->a_head.a_dev;
 960         struct      cam_periph *periph;
 961         struct      da_softc *softc;
 962         u_int       unit;
 963         long        blkcnt;
 964         vm_paddr_t  addr;
 965         struct      ccb_scsiio csio;
 966         int         dumppages = MAXDUMPPGS;
 967         int         i;
 968
 969         /* toss any characters present prior to dump */
 970         while (cncheckc() != -1)
 971                 ;
 972
 973         unit = dkunit(dev);
 974         periph = cam_extend_get(daperiphs, unit);
 975         if (periph == NULL) {
 976                 return (ENXIO);
 977         }
 978         softc = (struct da_softc *)periph->softc;
 979
 980         if ((softc->flags & DA_FLAG_PACK_INVALID) != 0)
 981                 return (ENXIO);
 982
 983         addr = 0;       /* starting address */
 984         blkcnt = howmany(PAGE_SIZE, ap->a_secsize);
 985
 986         while (ap->a_count > 0) {
 987                 caddr_t va = NULL;
 988
 989                 if ((ap->a_count / blkcnt) < dumppages)
 990                         dumppages = ap->a_count / blkcnt;
 991
 992                 for (i = 0; i < dumppages; ++i) {
 993                         vm_paddr_t a = addr + (i * PAGE_SIZE);
 994                         if (is_physical_memory(a))
 995                                 va = pmap_kenter_temporary(trunc_page(a), i);
 996                         else
 997                                 va = pmap_kenter_temporary(trunc_page(0), i);
 998                 }
 999
1000                 xpt_setup_ccb(&csio.ccb_h, periph->path, /*priority*/1);
1001                 csio.ccb_h.ccb_state = DA_CCB_DUMP;
1002                 scsi_read_write(&csio,
1003                                 /*retries*/1,
1004                                 dadone,
1005                                 MSG_ORDERED_Q_TAG,
1006                                 /*read*/FALSE,
1007                                 /*byte2*/0,
1008                                 /*minimum_cmd_size*/ softc->minimum_cmd_size,
1009                                 ap->a_blkno,
1010                                 blkcnt * dumppages,
1011                                 /*data_ptr*/(u_int8_t *) va,
1012                                 /*dxfer_len*/blkcnt * ap->a_secsize * dumppages,
1013                                 /*sense_len*/SSD_FULL_SIZE,
1014                                 DA_DEFAULT_TIMEOUT * 1000);
1015                 xpt_polled_action((union ccb *)&csio);
1016
1017                 if ((csio.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1018                         kprintf("Aborting dump due to I/O error.\n");
1019                         if ((csio.ccb_h.status & CAM_STATUS_MASK) ==
1020                              CAM_SCSI_STATUS_ERROR)
1021                                 scsi_sense_print(&csio);
1022                         else
1023                                 kprintf("status == 0x%x, scsi status == 0x%x\n",
1024                                        csio.ccb_h.status, csio.scsi_status);
1025                         return(EIO);
1026                 }
1027
1028                 if (dumpstatus(addr, (off_t)ap->a_count * softc->params.secsize) < 0)
1029                         return (EINTR);
1030
1031                 /* update block count */
1032                 ap->a_count -= blkcnt * dumppages;
1033                 ap->a_blkno += blkcnt * dumppages;
1034                 addr += PAGE_SIZE * dumppages;
1035         }
1036
1037         /*
1038          * Sync the disk cache contents to the physical media.
1039          */
1040         if ((softc->quirks & DA_Q_NO_SYNC_CACHE) == 0) {
1041
1042                 xpt_setup_ccb(&csio.ccb_h, periph->path, /*priority*/1);
1043                 csio.ccb_h.ccb_state = DA_CCB_DUMP;
1044                 scsi_synchronize_cache(&csio,
1045                                        /*retries*/1,
1046                                        /*cbfcnp*/dadone,
1047                                        MSG_SIMPLE_Q_TAG,
1048                                        /*begin_lba*/0,/* Cover the whole disk */
1049                                        /*lb_count*/0,
1050                                        SSD_FULL_SIZE,
1051                                        5 * 60 * 1000);
1052                 xpt_polled_action((union ccb *)&csio);
1053
1054                 if ((csio.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1055                         if ((csio.ccb_h.status & CAM_STATUS_MASK) ==
1056                              CAM_SCSI_STATUS_ERROR) {
1057                                 int asc, ascq;
1058                                 int sense_key, error_code;
1059
1060                                 scsi_extract_sense(&csio.sense_data,
1061                                                    &error_code,
1062                                                    &sense_key,
1063                                                    &asc, &ascq);
1064                                 if (sense_key != SSD_KEY_ILLEGAL_REQUEST)
1065                                         scsi_sense_print(&csio);
1066                         } else {
1067                                 xpt_print_path(periph->path);
1068                                 kprintf("Synchronize cache failed, status "
1069                                        "== 0x%x, scsi status == 0x%x\n",
1070                                        csio.ccb_h.status, csio.scsi_status);
1071                         }
1072                 }
1073         }
1074         return (0);
1075 }
1076
1077 static void
1078 dainit(void)
1079 {
1080         cam_status status;
1081         struct cam_path *path;
1082
1083         /*
1084          * Create our extend array for storing the devices we attach to.
1085          */
1086         daperiphs = cam_extend_new();
1087         SLIST_INIT(&softc_list);
1088         if (daperiphs == NULL) {
1089                 kprintf("da: Failed to alloc extend array!\n");
1090                 return;
1091         }
1092
1093         callout_init(&dasendorderedtag_ch);
1094
1095         /*
1096          * Install a global async callback.  This callback will
1097          * receive async callbacks like "new device found".
1098          */
1099         status = xpt_create_path(&path, /*periph*/NULL, CAM_XPT_PATH_ID,
1100                                  CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD);
1101
1102         if (status == CAM_REQ_CMP) {
1103                 struct ccb_setasync csa;
1104
1105                 xpt_setup_ccb(&csa.ccb_h, path, /*priority*/5);
1106                 csa.ccb_h.func_code = XPT_SASYNC_CB;
1107                 csa.event_enable = AC_FOUND_DEVICE;
1108                 csa.callback = daasync;
1109                 csa.callback_arg = NULL;
1110                 xpt_action((union ccb *)&csa);
1111                 status = csa.ccb_h.status;
1112                 xpt_free_path(path);
1113         }
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                 /*
1121                  * Schedule a periodic event to occasionally send an
1122                  * ordered tag to a device.
1123                  */
1124                 callout_reset(&dasendorderedtag_ch,
1125                     (DA_DEFAULT_TIMEOUT * hz) / DA_ORDEREDTAG_INTERVAL,
1126                     dasendorderedtag, NULL);
1127
1128                 /* Register our shutdown event handler */
1129                 if ((EVENTHANDLER_REGISTER(shutdown_post_sync, dashutdown,
1130                                            NULL, SHUTDOWN_PRI_DEFAULT)) == NULL)
1131                     kprintf("dainit: shutdown event registration failed!\n");
1132         }
1133 }
1134
1135 static void
1136 daoninvalidate(struct cam_periph *periph)
1137 {
1138         struct da_softc *softc;
1139         struct bio *q_bio;
1140         struct buf *q_bp;
1141         struct ccb_setasync csa;
1142
1143         softc = (struct da_softc *)periph->softc;
1144
1145         /*
1146          * De-register any async callbacks.
1147          */
1148         xpt_setup_ccb(&csa.ccb_h, periph->path,
1149                       /* priority */ 5);
1150         csa.ccb_h.func_code = XPT_SASYNC_CB;
1151         csa.event_enable = 0;
1152         csa.callback = daasync;
1153         csa.callback_arg = periph;
1154         xpt_action((union ccb *)&csa);
1155
1156         softc->flags |= DA_FLAG_PACK_INVALID;
1157
1158         /*
1159          * Use a critical section to keep the buffer queue from being
1160          * modified while we traverse it.
1161          */
1162         crit_enter();
1163
1164         /*
1165          * Return all queued I/O with ENXIO.
1166          * XXX Handle any transactions queued to the card
1167          *     with XPT_ABORT_CCB.
1168          */
1169         while ((q_bio = bioq_first(&softc->bio_queue)) != NULL){
1170                 bioq_remove(&softc->bio_queue, q_bio);
1171                 q_bp = q_bio->bio_buf;
1172                 q_bp->b_resid = q_bp->b_bcount;
1173                 q_bp->b_error = ENXIO;
1174                 q_bp->b_flags |= B_ERROR;
1175                 biodone(q_bio);
1176         }
1177         crit_exit();
1178
1179         SLIST_REMOVE(&softc_list, softc, da_softc, links);
1180
1181         xpt_print_path(periph->path);
1182         kprintf("lost device\n");
1183 }
1184
1185 static void
1186 dacleanup(struct cam_periph *periph)
1187 {
1188         struct da_softc *softc;
1189
1190         softc = (struct da_softc *)periph->softc;
1191
1192         devstat_remove_entry(&softc->device_stats);
1193         cam_extend_release(daperiphs, periph->unit_number);
1194         xpt_print_path(periph->path);
1195         kprintf("removing device entry\n");
1196         /*
1197          * If we can't free the sysctl tree, oh well...
1198          */
1199         if ((softc->flags & DA_FLAG_SCTX_INIT) != 0
1200             && sysctl_ctx_free(&softc->sysctl_ctx) != 0) {
1201                 xpt_print_path(periph->path);
1202                 kprintf("can't remove sysctl context\n");
1203         }
1204         if (softc->disk.d_rawdev) {
1205                 disk_destroy(&softc->disk);
1206         }
1207         kfree(softc, M_DEVBUF);
1208 }
1209
1210 static void
1211 daasync(void *callback_arg, u_int32_t code,
1212         struct cam_path *path, void *arg)
1213 {
1214         struct cam_periph *periph;
1215
1216         periph = (struct cam_periph *)callback_arg;
1217         switch (code) {
1218         case AC_FOUND_DEVICE:
1219         {
1220                 struct ccb_getdev *cgd;
1221                 cam_status status;
1222
1223                 cgd = (struct ccb_getdev *)arg;
1224                 if (cgd == NULL)
1225                         break;
1226
1227                 if (SID_TYPE(&cgd->inq_data) != T_DIRECT
1228                     && SID_TYPE(&cgd->inq_data) != T_RBC
1229                     && SID_TYPE(&cgd->inq_data) != T_OPTICAL)
1230                         break;
1231
1232                 /*
1233                  * Allocate a peripheral instance for
1234                  * this device and start the probe
1235                  * process.
1236                  */
1237                 status = cam_periph_alloc(daregister, daoninvalidate,
1238                                           dacleanup, dastart,
1239                                           "da", CAM_PERIPH_BIO,
1240                                           cgd->ccb_h.path, daasync,
1241                                           AC_FOUND_DEVICE, cgd);
1242
1243                 if (status != CAM_REQ_CMP
1244                  && status != CAM_REQ_INPROG)
1245                         kprintf("daasync: Unable to attach to new device "
1246                                 "due to status 0x%x\n", status);
1247                 break;
1248         }
1249         case AC_SENT_BDR:
1250         case AC_BUS_RESET:
1251         {
1252                 struct da_softc *softc;
1253                 struct ccb_hdr *ccbh;
1254
1255                 softc = (struct da_softc *)periph->softc;
1256                 crit_enter();
1257                 /*
1258                  * Don't fail on the expected unit attention
1259                  * that will occur.
1260                  */
1261                 softc->flags |= DA_FLAG_RETRY_UA;
1262                 LIST_FOREACH(ccbh, &softc->pending_ccbs, periph_links.le)
1263                         ccbh->ccb_state |= DA_CCB_RETRY_UA;
1264                 crit_exit();
1265                 /* FALLTHROUGH*/
1266         }
1267         default:
1268                 cam_periph_async(periph, code, path, arg);
1269                 break;
1270         }
1271 }
1272
1273 static void
1274 dasysctlinit(void *context, int pending)
1275 {
1276         struct cam_periph *periph;
1277         struct da_softc *softc;
1278         char tmpstr[80], tmpstr2[80];
1279
1280         periph = (struct cam_periph *)context;
1281         softc = (struct da_softc *)periph->softc;
1282
1283         ksnprintf(tmpstr, sizeof(tmpstr), "CAM DA unit %d", periph->unit_number);
1284         ksnprintf(tmpstr2, sizeof(tmpstr2), "%d", periph->unit_number);
1285
1286         sysctl_ctx_init(&softc->sysctl_ctx);
1287         softc->flags |= DA_FLAG_SCTX_INIT;
1288         softc->sysctl_tree = SYSCTL_ADD_NODE(&softc->sysctl_ctx,
1289                 SYSCTL_STATIC_CHILDREN(_kern_cam_da), OID_AUTO, tmpstr2,
1290                 CTLFLAG_RD, 0, tmpstr);
1291         if (softc->sysctl_tree == NULL) {
1292                 kprintf("dasysctlinit: unable to allocate sysctl tree\n");
1293                 return;
1294         }
1295
1296         /*
1297          * Now register the sysctl handler, so the user can the value on
1298          * the fly.
1299          */
1300         SYSCTL_ADD_PROC(&softc->sysctl_ctx,SYSCTL_CHILDREN(softc->sysctl_tree),
1301                 OID_AUTO, "minimum_cmd_size", CTLTYPE_INT | CTLFLAG_RW,
1302                 &softc->minimum_cmd_size, 0, dacmdsizesysctl, "I",
1303                 "Minimum CDB size");
1304 }
1305
1306 static int
1307 dacmdsizesysctl(SYSCTL_HANDLER_ARGS)
1308 {
1309         int error, value;
1310
1311         value = *(int *)arg1;
1312
1313         error = sysctl_handle_int(oidp, &value, 0, req);
1314
1315         if ((error != 0)
1316          || (req->newptr == NULL))
1317                 return (error);
1318
1319         /*
1320          * Acceptable values here are 6, 10 or 12, or 16.
1321          */
1322         if (value < 6)
1323                 value = 6;
1324         else if ((value > 6)
1325               && (value <= 10))
1326                 value = 10;
1327         else if ((value > 10)
1328               && (value <= 12))
1329                 value = 12;
1330         else if (value > 12)
1331                 value = 16;
1332
1333         *(int *)arg1 = value;
1334
1335         return (0);
1336 }
1337
1338 static cam_status
1339 daregister(struct cam_periph *periph, void *arg)
1340 {
1341         struct da_softc *softc;
1342         struct ccb_setasync csa;
1343         struct ccb_pathinq cpi;
1344         struct ccb_getdev *cgd;
1345         char tmpstr[80];
1346         caddr_t match;
1347
1348         cgd = (struct ccb_getdev *)arg;
1349         if (periph == NULL) {
1350                 kprintf("daregister: periph was NULL!!\n");
1351                 return(CAM_REQ_CMP_ERR);
1352         }
1353
1354         if (cgd == NULL) {
1355                 kprintf("daregister: no getdev CCB, can't register device\n");
1356                 return(CAM_REQ_CMP_ERR);
1357         }
1358
1359         softc = kmalloc(sizeof(*softc), M_DEVBUF, M_INTWAIT | M_ZERO);
1360         LIST_INIT(&softc->pending_ccbs);
1361         softc->state = DA_STATE_PROBE;
1362         bioq_init(&softc->bio_queue);
1363         if (SID_IS_REMOVABLE(&cgd->inq_data))
1364                 softc->flags |= DA_FLAG_PACK_REMOVABLE;
1365         if ((cgd->inq_data.flags & SID_CmdQue) != 0)
1366                 softc->flags |= DA_FLAG_TAGGED_QUEUING;
1367
1368         periph->softc = softc;
1369
1370         cam_extend_set(daperiphs, periph->unit_number, periph);
1371
1372         /*
1373          * See if this device has any quirks.
1374          */
1375         match = cam_quirkmatch((caddr_t)&cgd->inq_data,
1376                                (caddr_t)da_quirk_table,
1377                                sizeof(da_quirk_table)/sizeof(*da_quirk_table),
1378                                sizeof(*da_quirk_table), scsi_inquiry_match);
1379
1380         if (match != NULL)
1381                 softc->quirks = ((struct da_quirk_entry *)match)->quirks;
1382         else
1383                 softc->quirks = DA_Q_NONE;
1384
1385         TASK_INIT(&softc->sysctl_task, 0, dasysctlinit, periph);
1386
1387         /* Check if the SIM does not want 6 byte commands */
1388         xpt_setup_ccb(&cpi.ccb_h, periph->path, /*priority*/1);
1389         cpi.ccb_h.func_code = XPT_PATH_INQ;
1390         xpt_action((union ccb *)&cpi);
1391         if (cpi.ccb_h.status == CAM_REQ_CMP && (cpi.hba_misc & PIM_NO_6_BYTE))
1392                 softc->quirks |= DA_Q_NO_6_BYTE;
1393
1394         /*
1395          * RBC devices don't have to support READ(6), only READ(10).
1396          */
1397         if (softc->quirks & DA_Q_NO_6_BYTE || SID_TYPE(&cgd->inq_data) == T_RBC)
1398                 softc->minimum_cmd_size = 10;
1399         else
1400                 softc->minimum_cmd_size = 6;
1401
1402         /*
1403          * Load the user's default, if any.
1404          */
1405         ksnprintf(tmpstr, sizeof(tmpstr), "kern.cam.da.%d.minimum_cmd_size",
1406                  periph->unit_number);
1407         TUNABLE_INT_FETCH(tmpstr, &softc->minimum_cmd_size);
1408
1409         /*
1410          * 6, 10, 12, and 16 are the currently permissible values.
1411          */
1412         if (softc->minimum_cmd_size < 6)
1413                 softc->minimum_cmd_size = 6;
1414         else if ((softc->minimum_cmd_size > 6)
1415               && (softc->minimum_cmd_size <= 10))
1416                 softc->minimum_cmd_size = 10;
1417         else if ((softc->minimum_cmd_size > 10)
1418               && (softc->minimum_cmd_size <= 12))
1419                 softc->minimum_cmd_size = 12;
1420         else if (softc->minimum_cmd_size > 12)
1421                 softc->minimum_cmd_size = 16;
1422
1423         /*
1424          * Block our timeout handler while we
1425          * add this softc to the dev list.
1426          */
1427         crit_enter();
1428         SLIST_INSERT_HEAD(&softc_list, softc, links);
1429         crit_exit();
1430
1431         /*
1432          * The DA driver supports a blocksize, but
1433          * we don't know the blocksize until we do
1434          * a read capacity.  So, set a flag to
1435          * indicate that the blocksize is
1436          * unavailable right now.  We'll clear the
1437          * flag as soon as we've done a read capacity.
1438          */
1439         devstat_add_entry(&softc->device_stats, "da",
1440                           periph->unit_number, 0,
1441                           DEVSTAT_BS_UNAVAILABLE,
1442                           SID_TYPE(&cgd->inq_data) | DEVSTAT_TYPE_IF_SCSI,
1443                           DEVSTAT_PRIORITY_DISK);
1444
1445         /*
1446          * Register this media as a disk
1447          */
1448         disk_create(periph->unit_number, &softc->disk, &da_ops);
1449         softc->disk.d_rawdev->si_iosize_max = MAXPHYS;
1450
1451         /*
1452          * Add async callbacks for bus reset and
1453          * bus device reset calls.  I don't bother
1454          * checking if this fails as, in most cases,
1455          * the system will function just fine without
1456          * them and the only alternative would be to
1457          * not attach the device on failure.
1458          */
1459         xpt_setup_ccb(&csa.ccb_h, periph->path, /*priority*/5);
1460         csa.ccb_h.func_code = XPT_SASYNC_CB;
1461         csa.event_enable = AC_SENT_BDR | AC_BUS_RESET | AC_LOST_DEVICE;
1462         csa.callback = daasync;
1463         csa.callback_arg = periph;
1464         xpt_action((union ccb *)&csa);
1465         /*
1466          * Lock this peripheral until we are setup.
1467          * This first call can't block
1468          */
1469         cam_periph_lock(periph, 0);
1470         xpt_schedule(periph, /*priority*/5);
1471
1472         return(CAM_REQ_CMP);
1473 }
1474
1475 static void
1476 dastart(struct cam_periph *periph, union ccb *start_ccb)
1477 {
1478         struct da_softc *softc;
1479
1480         softc = (struct da_softc *)periph->softc;
1481
1482
1483         switch (softc->state) {
1484         case DA_STATE_NORMAL:
1485         {
1486                 /* Pull a buffer from the queue and get going on it */
1487                 struct bio *bio;
1488                 struct buf *bp;
1489
1490                 /*
1491                  * See if there is a buf with work for us to do..
1492                  */
1493                 crit_enter();
1494                 bio = bioq_first(&softc->bio_queue);
1495                 if (periph->immediate_priority <= periph->pinfo.priority) {
1496                         CAM_DEBUG_PRINT(CAM_DEBUG_SUBTRACE,
1497                                         ("queuing for immediate ccb\n"));
1498                         start_ccb->ccb_h.ccb_state = DA_CCB_WAITING;
1499                         SLIST_INSERT_HEAD(&periph->ccb_list, &start_ccb->ccb_h,
1500                                           periph_links.sle);
1501                         periph->immediate_priority = CAM_PRIORITY_NONE;
1502                         crit_exit();
1503                         wakeup(&periph->ccb_list);
1504                 } else if (bio == NULL) {
1505                         crit_exit();
1506                         xpt_release_ccb(start_ccb);
1507                 } else {
1508                         u_int8_t tag_code;
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                         KKASSERT(bio->bio_offset % softc->params.secsize == 0);
1525
1526                         scsi_read_write(&start_ccb->csio,
1527                                         /*retries*/da_retry_count,
1528                                         dadone,
1529                                         tag_code,
1530                                         (bp->b_cmd == BUF_CMD_READ),
1531                                         /*byte2*/0,
1532                                         softc->minimum_cmd_size,
1533                                         bio->bio_offset / softc->params.secsize,
1534                                         bp->b_bcount / softc->params.secsize,
1535                                         bp->b_data,
1536                                         bp->b_bcount,
1537                                         /*sense_len*/SSD_FULL_SIZE,
1538                                         da_default_timeout * 1000);
1539                         start_ccb->ccb_h.ccb_state = DA_CCB_BUFFER_IO;
1540
1541                         /*
1542                          * Block out any asyncronous callbacks
1543                          * while we touch the pending ccb list.
1544                          */
1545                         LIST_INSERT_HEAD(&softc->pending_ccbs,
1546                                          &start_ccb->ccb_h, periph_links.le);
1547
1548                         softc->outstanding_cmds++;
1549                         /* We expect a unit attention from this device */
1550                         if ((softc->flags & DA_FLAG_RETRY_UA) != 0) {
1551                                 start_ccb->ccb_h.ccb_state |= DA_CCB_RETRY_UA;
1552                                 softc->flags &= ~DA_FLAG_RETRY_UA;
1553                         }
1554
1555                         start_ccb->ccb_h.ccb_bio = bio;
1556                         bio = bioq_first(&softc->bio_queue);
1557                         crit_exit();
1558
1559                         xpt_action(start_ccb);
1560                 }
1561
1562                 if (bio != NULL) {
1563                         /* Have more work to do, so ensure we stay scheduled */
1564                         xpt_schedule(periph, /* XXX priority */1);
1565                 }
1566                 break;
1567         }
1568         case DA_STATE_PROBE:
1569         {
1570                 struct ccb_scsiio *csio;
1571                 struct scsi_read_capacity_data *rcap;
1572
1573                 rcap = kmalloc(sizeof(*rcap), M_TEMP, M_INTWAIT | M_ZERO);
1574                 csio = &start_ccb->csio;
1575                 scsi_read_capacity(csio,
1576                                    /*retries*/4,
1577                                    dadone,
1578                                    MSG_SIMPLE_Q_TAG,
1579                                    rcap,
1580                                    SSD_FULL_SIZE,
1581                                    /*timeout*/5000);
1582                 start_ccb->ccb_h.ccb_bio = NULL;
1583                 start_ccb->ccb_h.ccb_state = DA_CCB_PROBE;
1584                 xpt_action(start_ccb);
1585                 break;
1586         }
1587         case DA_STATE_PROBE2:
1588         {
1589                 struct ccb_scsiio *csio;
1590                 struct scsi_read_capacity_data_long *rcaplong;
1591
1592                 rcaplong = (struct scsi_read_capacity_data_long *)
1593                 kmalloc(sizeof(*rcaplong), M_TEMP, M_INTWAIT);
1594                 if (rcaplong == NULL) {
1595                         kprintf("dastart: Couldn't allocate read_capacity\n");
1596                         /* da_free_periph??? */
1597                         break;
1598                 }
1599                 csio = &start_ccb->csio;
1600                 scsi_read_capacity_16(csio,
1601                                     /*retries*/ 4,
1602                                     /*cbfcnp*/ dadone,
1603                                     /*tag_action*/ MSG_SIMPLE_Q_TAG,
1604                                     /*lba*/ 0,
1605                                     /*reladr*/ 0,
1606                                     /*pmi*/ 0,
1607                                     rcaplong,
1608                                     /*sense_len*/ SSD_FULL_SIZE,
1609                                     /*timeout*/ 60000);
1610                 start_ccb->ccb_h.ccb_bio = NULL;
1611                 start_ccb->ccb_h.ccb_state = DA_CCB_PROBE2;
1612                 xpt_action(start_ccb);
1613                 break;
1614         }
1615         }
1616 }
1617
1618 static int
1619 cmd6workaround(union ccb *ccb)
1620 {
1621         struct scsi_rw_6 cmd6;
1622         struct scsi_rw_10 *cmd10;
1623         struct da_softc *softc;
1624         u_int8_t *cdb;
1625         int frozen;
1626
1627         cdb = ccb->csio.cdb_io.cdb_bytes;
1628
1629         /* Translation only possible if CDB is an array and cmd is R/W6 */
1630         if ((ccb->ccb_h.flags & CAM_CDB_POINTER) != 0 ||
1631             (*cdb != READ_6 && *cdb != WRITE_6))
1632                 return 0;
1633
1634         xpt_print_path(ccb->ccb_h.path);
1635         kprintf("READ(6)/WRITE(6) not supported, "
1636                "increasing minimum_cmd_size to 10.\n");
1637         softc = (struct da_softc *)xpt_path_periph(ccb->ccb_h.path)->softc;
1638         softc->minimum_cmd_size = 10;
1639
1640         bcopy(cdb, &cmd6, sizeof(struct scsi_rw_6));
1641         cmd10 = (struct scsi_rw_10 *)cdb;
1642         cmd10->opcode = (cmd6.opcode == READ_6) ? READ_10 : WRITE_10;
1643         cmd10->byte2 = 0;
1644         scsi_ulto4b(scsi_3btoul(cmd6.addr), cmd10->addr);
1645         cmd10->reserved = 0;
1646         scsi_ulto2b(cmd6.length, cmd10->length);
1647         cmd10->control = cmd6.control;
1648         ccb->csio.cdb_len = sizeof(*cmd10);
1649
1650         /* Requeue request, unfreezing queue if necessary */
1651         frozen = (ccb->ccb_h.status & CAM_DEV_QFRZN) != 0;
1652         ccb->ccb_h.status = CAM_REQUEUE_REQ;
1653         xpt_action(ccb);
1654         if (frozen) {
1655                 cam_release_devq(ccb->ccb_h.path,
1656                                  /*relsim_flags*/0,
1657                                  /*reduction*/0,
1658                                  /*timeout*/0,
1659                                  /*getcount_only*/0);
1660         }
1661         return (ERESTART);
1662 }
1663
1664 static void
1665 dadone(struct cam_periph *periph, union ccb *done_ccb)
1666 {
1667         struct da_softc *softc;
1668         struct ccb_scsiio *csio;
1669
1670         softc = (struct da_softc *)periph->softc;
1671         csio = &done_ccb->csio;
1672         switch (csio->ccb_h.ccb_state & DA_CCB_TYPE_MASK) {
1673         case DA_CCB_BUFFER_IO:
1674         {
1675                 struct buf *bp;
1676                 struct bio *bio;
1677
1678                 bio = (struct bio *)done_ccb->ccb_h.ccb_bio;
1679                 bp = bio->bio_buf;
1680                 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1681                         int error;
1682                         int sf;
1683
1684                         if ((csio->ccb_h.ccb_state & DA_CCB_RETRY_UA) != 0)
1685                                 sf = SF_RETRY_UA;
1686                         else
1687                                 sf = 0;
1688
1689                         error = daerror(done_ccb, CAM_RETRY_SELTO, sf);
1690                         if (error == ERESTART) {
1691                                 /*
1692                                  * A retry was scheuled, so
1693                                  * just return.
1694                                  */
1695                                 return;
1696                         }
1697                         if (error != 0) {
1698                                 struct bio *q_bio;
1699                                 struct buf *q_bp;
1700
1701                                 crit_enter();
1702
1703                                 if (error == ENXIO) {
1704                                         /*
1705                                          * Catastrophic error.  Mark our pack as
1706                                          * invalid.
1707                                          */
1708                                         /* XXX See if this is really a media
1709                                          *     change first.
1710                                          */
1711                                         xpt_print_path(periph->path);
1712                                         kprintf("Invalidating pack\n");
1713                                         softc->flags |= DA_FLAG_PACK_INVALID;
1714                                 }
1715
1716                                 /*
1717                                  * return all queued I/O with EIO, so that
1718                                  * the client can retry these I/Os in the
1719                                  * proper order should it attempt to recover.
1720                                  */
1721                                 while ((q_bio = bioq_first(&softc->bio_queue))
1722                                         != NULL) {
1723                                         bioq_remove(&softc->bio_queue, q_bio);
1724                                         q_bp = q_bio->bio_buf;
1725                                         q_bp->b_resid = q_bp->b_bcount;
1726                                         q_bp->b_error = EIO;
1727                                         q_bp->b_flags |= B_ERROR;
1728                                         biodone(q_bio);
1729                                 }
1730                                 crit_exit();
1731                                 bp->b_error = error;
1732                                 bp->b_resid = bp->b_bcount;
1733                                 bp->b_flags |= B_ERROR;
1734                         } else {
1735                                 bp->b_resid = csio->resid;
1736                                 bp->b_error = 0;
1737                                 if (bp->b_resid != 0)
1738                                         bp->b_flags |= B_ERROR;
1739                         }
1740                         if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
1741                                 cam_release_devq(done_ccb->ccb_h.path,
1742                                                  /*relsim_flags*/0,
1743                                                  /*reduction*/0,
1744                                                  /*timeout*/0,
1745                                                  /*getcount_only*/0);
1746                 } else {
1747                         if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
1748                                 panic("REQ_CMP with QFRZN");
1749                         bp->b_resid = csio->resid;
1750                         if (csio->resid > 0)
1751                                 bp->b_flags |= B_ERROR;
1752                 }
1753
1754                 /*
1755                  * Block out any asyncronous callbacks
1756                  * while we touch the pending ccb list.
1757                  */
1758                 crit_enter();
1759                 LIST_REMOVE(&done_ccb->ccb_h, periph_links.le);
1760                 softc->outstanding_cmds--;
1761                 if (softc->outstanding_cmds == 0)
1762                         softc->flags |= DA_FLAG_WENT_IDLE;
1763                 crit_exit();
1764
1765                 devstat_end_transaction_buf(&softc->device_stats, bp);
1766                 biodone(bio);
1767                 break;
1768         }
1769         case DA_CCB_PROBE:
1770         case DA_CCB_PROBE2:
1771         {
1772                 struct     scsi_read_capacity_data *rdcap;
1773                 struct     scsi_read_capacity_data_long *rcaplong;
1774                 char       announce_buf[80];
1775
1776                 rdcap = NULL;
1777                 rcaplong = NULL;
1778                 if (softc->state == DA_STATE_PROBE)
1779                         rdcap =(struct scsi_read_capacity_data *)csio->data_ptr;
1780                 else
1781                         rcaplong = (struct scsi_read_capacity_data_long *)
1782                                     csio->data_ptr;
1783
1784                 if ((csio->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP) {
1785                         struct disk_params *dp;
1786                         uint32_t block_size;
1787                         uint64_t maxsector;
1788
1789                         if (softc->state == DA_STATE_PROBE) {
1790                                 block_size = scsi_4btoul(rdcap->length);
1791                                 maxsector = scsi_4btoul(rdcap->addr);
1792
1793                                 /*
1794                                  * According to SBC-2, if the standard 10
1795                                  * byte READ CAPACITY command returns 2^32,
1796                                  * we should issue the 16 byte version of
1797                                  * the command, since the device in question
1798                                  * has more sectors than can be represented
1799                                  * with the short version of the command.
1800                                  */
1801                                 if (maxsector == 0xffffffff) {
1802                                         softc->state = DA_STATE_PROBE2;
1803                                         kfree(rdcap, M_TEMP);
1804                                         xpt_release_ccb(done_ccb);
1805                                         xpt_schedule(periph, /*priority*/5);
1806                                         return;
1807                                 }
1808                         } else {
1809                                 block_size = scsi_4btoul(rcaplong->length);
1810                                 maxsector = scsi_8btou64(rcaplong->addr);
1811                         }
1812                         dasetgeom(periph, block_size, maxsector);
1813                         dp = &softc->params;
1814                         ksnprintf(announce_buf, sizeof(announce_buf),
1815                                 "%juMB (%ju %u byte sectors: %dH %dS/T %dC)",
1816                                 (uintmax_t) (((uintmax_t)dp->secsize *
1817                                 dp->sectors) / (1024*1024)),
1818                                 (uintmax_t)dp->sectors,
1819                                 dp->secsize, dp->heads, dp->secs_per_track,
1820                                 dp->cylinders);
1821                 } else {
1822                         int     error;
1823
1824                         announce_buf[0] = '\0';
1825
1826                         /*
1827                          * Retry any UNIT ATTENTION type errors.  They
1828                          * are expected at boot.
1829                          */
1830                         error = daerror(done_ccb, CAM_RETRY_SELTO,
1831                                         SF_RETRY_UA|SF_NO_PRINT);
1832                         if (error == ERESTART) {
1833                                 /*
1834                                  * A retry was scheuled, so
1835                                  * just return.
1836                                  */
1837                                 return;
1838                         } else if (error != 0) {
1839                                 struct scsi_sense_data *sense;
1840                                 int asc, ascq;
1841                                 int sense_key, error_code;
1842                                 int have_sense;
1843                                 cam_status status;
1844                                 struct ccb_getdev cgd;
1845
1846                                 /* Don't wedge this device's queue */
1847                                 status = done_ccb->ccb_h.status;
1848                                 if ((status & CAM_DEV_QFRZN) != 0)
1849                                         cam_release_devq(done_ccb->ccb_h.path,
1850                                                          /*relsim_flags*/0,
1851                                                          /*reduction*/0,
1852                                                          /*timeout*/0,
1853                                                          /*getcount_only*/0);
1854
1855
1856                                 xpt_setup_ccb(&cgd.ccb_h,
1857                                               done_ccb->ccb_h.path,
1858                                               /* priority */ 1);
1859                                 cgd.ccb_h.func_code = XPT_GDEV_TYPE;
1860                                 xpt_action((union ccb *)&cgd);
1861
1862                                 if (((csio->ccb_h.flags & CAM_SENSE_PHYS) != 0)
1863                                  || ((csio->ccb_h.flags & CAM_SENSE_PTR) != 0)
1864                                  || ((status & CAM_AUTOSNS_VALID) == 0))
1865                                         have_sense = FALSE;
1866                                 else
1867                                         have_sense = TRUE;
1868
1869                                 if (have_sense) {
1870                                         sense = &csio->sense_data;
1871                                         scsi_extract_sense(sense, &error_code,
1872                                                            &sense_key,
1873                                                            &asc, &ascq);
1874                                 }
1875                                 /*
1876                                  * Attach to anything that claims to be a
1877                                  * direct access or optical disk device,
1878                                  * as long as it doesn't return a "Logical
1879                                  * unit not supported" (0x25) error.
1880                                  */
1881                                 if ((have_sense) && (asc != 0x25)
1882                                  && (error_code == SSD_CURRENT_ERROR)) {
1883                                         const char *sense_key_desc;
1884                                         const char *asc_desc;
1885
1886                                         scsi_sense_desc(sense_key, asc, ascq,
1887                                                         &cgd.inq_data,
1888                                                         &sense_key_desc,
1889                                                         &asc_desc);
1890                                         ksnprintf(announce_buf,
1891                                             sizeof(announce_buf),
1892                                                 "Attempt to query device "
1893                                                 "size failed: %s, %s",
1894                                                 sense_key_desc,
1895                                                 asc_desc);
1896                                 } else {
1897                                         if (have_sense)
1898                                                 scsi_sense_print(
1899                                                         &done_ccb->csio);
1900                                         else {
1901                                                 xpt_print_path(periph->path);
1902                                                 kprintf("got CAM status %#x\n",
1903                                                        done_ccb->ccb_h.status);
1904                                         }
1905
1906                                         xpt_print_path(periph->path);
1907                                         kprintf("fatal error, failed"
1908                                                " to attach to device\n");
1909
1910                                         /*
1911                                          * Free up resources.
1912                                          */
1913                                         cam_periph_invalidate(periph);
1914                                 }
1915                         }
1916                 }
1917                 kfree(csio->data_ptr, M_TEMP);
1918                 if (announce_buf[0] != '\0') {
1919                         xpt_announce_periph(periph, announce_buf);
1920                         /*
1921                          * Create our sysctl variables, now that we know
1922                          * we have successfully attached.
1923                          */
1924                         taskqueue_enqueue(taskqueue_thread[mycpuid],
1925                             &softc->sysctl_task);
1926                 }
1927                 softc->state = DA_STATE_NORMAL;
1928                 /*
1929                  * Since our peripheral may be invalidated by an error
1930                  * above or an external event, we must release our CCB
1931                  * before releasing the probe lock on the peripheral.
1932                  * The peripheral will only go away once the last lock
1933                  * is removed, and we need it around for the CCB release
1934                  * operation.
1935                  */
1936                 xpt_release_ccb(done_ccb);
1937                 cam_periph_unlock(periph);
1938                 return;
1939         }
1940         case DA_CCB_WAITING:
1941         {
1942                 /* Caller will release the CCB */
1943                 wakeup(&done_ccb->ccb_h.cbfcnp);
1944                 return;
1945         }
1946         case DA_CCB_DUMP:
1947                 /* No-op.  We're polling */
1948                 return;
1949         default:
1950                 break;
1951         }
1952         xpt_release_ccb(done_ccb);
1953 }
1954
1955 static int
1956 daerror(union ccb *ccb, u_int32_t cam_flags, u_int32_t sense_flags)
1957 {
1958         struct da_softc   *softc;
1959         struct cam_periph *periph;
1960         int error;
1961
1962         periph = xpt_path_periph(ccb->ccb_h.path);
1963         softc = (struct da_softc *)periph->softc;
1964
1965         /*
1966          * Automatically detect devices that do not support
1967          * READ(6)/WRITE(6) and upgrade to using 10 byte cdbs.
1968          */
1969         error = 0;
1970         if ((ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_INVALID) {
1971                 error = cmd6workaround(ccb);
1972         } else if (((ccb->ccb_h.status & CAM_STATUS_MASK) ==
1973                    CAM_SCSI_STATUS_ERROR)
1974          && (ccb->ccb_h.status & CAM_AUTOSNS_VALID)
1975          && (ccb->csio.scsi_status == SCSI_STATUS_CHECK_COND)
1976          && ((ccb->ccb_h.flags & CAM_SENSE_PHYS) == 0)
1977          && ((ccb->ccb_h.flags & CAM_SENSE_PTR) == 0)) {
1978                 int sense_key, error_code, asc, ascq;
1979
1980                 scsi_extract_sense(&ccb->csio.sense_data,
1981                                    &error_code, &sense_key, &asc, &ascq);
1982                 if (sense_key == SSD_KEY_ILLEGAL_REQUEST)
1983                         error = cmd6workaround(ccb);
1984         }
1985         if (error == ERESTART)
1986                 return (ERESTART);
1987
1988         /*
1989          * XXX
1990          * Until we have a better way of doing pack validation,
1991          * don't treat UAs as errors.
1992          */
1993         sense_flags |= SF_RETRY_UA;
1994         return(cam_periph_error(ccb, cam_flags, sense_flags,
1995                                 &softc->saved_ccb));
1996 }
1997
1998 static void
1999 daprevent(struct cam_periph *periph, int action)
2000 {
2001         struct  da_softc *softc;
2002         union   ccb *ccb;
2003         int     error;
2004
2005         softc = (struct da_softc *)periph->softc;
2006
2007         if (((action == PR_ALLOW)
2008           && (softc->flags & DA_FLAG_PACK_LOCKED) == 0)
2009          || ((action == PR_PREVENT)
2010           && (softc->flags & DA_FLAG_PACK_LOCKED) != 0)) {
2011                 return;
2012         }
2013
2014         ccb = cam_periph_getccb(periph, /*priority*/1);
2015
2016         scsi_prevent(&ccb->csio,
2017                      /*retries*/1,
2018                      /*cbcfp*/dadone,
2019                      MSG_SIMPLE_Q_TAG,
2020                      action,
2021                      SSD_FULL_SIZE,
2022                      5000);
2023
2024         error = cam_periph_runccb(ccb, /*error_routine*/NULL, CAM_RETRY_SELTO,
2025                                   SF_RETRY_UA, &softc->device_stats);
2026
2027         if (error == 0) {
2028                 if (action == PR_ALLOW)
2029                         softc->flags &= ~DA_FLAG_PACK_LOCKED;
2030                 else
2031                         softc->flags |= DA_FLAG_PACK_LOCKED;
2032         }
2033
2034         xpt_release_ccb(ccb);
2035 }
2036
2037 static int
2038 dagetcapacity(struct cam_periph *periph)
2039 {
2040         struct da_softc *softc;
2041         union ccb *ccb;
2042         struct scsi_read_capacity_data *rcap;
2043         struct scsi_read_capacity_data_long *rcaplong;
2044         uint32_t block_len;
2045         uint64_t maxsector;
2046         int error;
2047
2048         softc = (struct da_softc *)periph->softc;
2049         block_len = 0;
2050         maxsector = 0;
2051         error = 0;
2052
2053         /* Do a read capacity */
2054         rcap = (void *)kmalloc(sizeof(*rcaplong), M_TEMP, M_INTWAIT);
2055
2056         ccb = cam_periph_getccb(periph, /*priority*/1);
2057         scsi_read_capacity(&ccb->csio,
2058                            /*retries*/4,
2059                            /*cbfncp*/dadone,
2060                            MSG_SIMPLE_Q_TAG,
2061                            rcap,
2062                            SSD_FULL_SIZE,
2063                            /*timeout*/60000);
2064         ccb->ccb_h.ccb_bio = NULL;
2065
2066         error = cam_periph_runccb(ccb, daerror,
2067                                   /*cam_flags*/CAM_RETRY_SELTO,
2068                                   /*sense_flags*/SF_RETRY_UA,
2069                                   &softc->device_stats);
2070
2071         if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
2072                 cam_release_devq(ccb->ccb_h.path,
2073                                  /*relsim_flags*/0,
2074                                  /*reduction*/0,
2075                                  /*timeout*/0,
2076                                  /*getcount_only*/0);
2077
2078         if (error == 0) {
2079                 block_len = scsi_4btoul(rcap->length);
2080                 maxsector = scsi_4btoul(rcap->addr);
2081
2082                 if (maxsector != 0xffffffff)
2083                         goto done;
2084         } else
2085                 goto done;
2086
2087         rcaplong = (struct scsi_read_capacity_data_long *)rcap;
2088
2089         scsi_read_capacity_16(&ccb->csio,
2090                               /*retries*/ 4,
2091                               /*cbfcnp*/ dadone,
2092                               /*tag_action*/ MSG_SIMPLE_Q_TAG,
2093                               /*lba*/ 0,
2094                               /*reladr*/ 0,
2095                               /*pmi*/ 0,
2096                               rcaplong,
2097                               /*sense_len*/ SSD_FULL_SIZE,
2098                               /*timeout*/ 60000);
2099         ccb->ccb_h.ccb_bio = NULL;
2100
2101         error = cam_periph_runccb(ccb, daerror,
2102                                   /*cam_flags*/CAM_RETRY_SELTO,
2103                                   /*sense_flags*/SF_RETRY_UA,
2104                                   &softc->device_stats);
2105
2106         if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
2107                 cam_release_devq(ccb->ccb_h.path,
2108                                  /*relsim_flags*/0,
2109                                  /*reduction*/0,
2110                                  /*timeout*/0,
2111                                  /*getcount_only*/0);
2112
2113         if (error == 0) {
2114                 block_len = scsi_4btoul(rcaplong->length);
2115                 maxsector = scsi_8btou64(rcaplong->addr);
2116         }
2117
2118 done:
2119
2120         if (error == 0)
2121                 dasetgeom(periph, block_len, maxsector);
2122
2123         xpt_release_ccb(ccb);
2124
2125         kfree(rcap, M_TEMP);
2126
2127         return (error);
2128 }
2129
2130 static void
2131 dasetgeom(struct cam_periph *periph, uint32_t block_len, uint64_t maxsector)
2132 {
2133         struct ccb_calc_geometry ccg;
2134         struct da_softc *softc;
2135         struct disk_params *dp;
2136
2137         softc = (struct da_softc *)periph->softc;
2138
2139         dp = &softc->params;
2140         dp->secsize = block_len;
2141         dp->sectors = maxsector + 1;
2142         /*
2143          * Have the controller provide us with a geometry
2144          * for this disk.  The only time the geometry
2145          * matters is when we boot and the controller
2146          * is the only one knowledgeable enough to come
2147          * up with something that will make this a bootable
2148          * device.
2149          */
2150         xpt_setup_ccb(&ccg.ccb_h, periph->path, /*priority*/1);
2151         ccg.ccb_h.func_code = XPT_CALC_GEOMETRY;
2152         ccg.block_size = dp->secsize;
2153         ccg.volume_size = dp->sectors;
2154         ccg.heads = 0;
2155         ccg.secs_per_track = 0;
2156         ccg.cylinders = 0;
2157         xpt_action((union ccb*)&ccg);
2158         if ((ccg.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
2159                 /*
2160                  * We don't know what went wrong here- but just pick
2161                  * a geometry so we don't have nasty things like divide
2162                  * by zero.
2163                  */
2164                 dp->heads = 255;
2165                 dp->secs_per_track = 255;
2166                 dp->cylinders = dp->sectors / (255 * 255);
2167                 if (dp->cylinders == 0) {
2168                         dp->cylinders = 1;
2169                 }
2170         } else {
2171                 dp->heads = ccg.heads;
2172                 dp->secs_per_track = ccg.secs_per_track;
2173                 dp->cylinders = ccg.cylinders;
2174         }
2175 }
2176
2177 static void
2178 dasendorderedtag(void *arg)
2179 {
2180         struct da_softc *softc;
2181
2182         if (da_send_ordered) {
2183                 SLIST_FOREACH(softc, &softc_list, links) {
2184                         crit_enter();
2185                         if ((softc->ordered_tag_count == 0)
2186                          && ((softc->flags & DA_FLAG_WENT_IDLE) == 0)) {
2187                                 softc->flags |= DA_FLAG_NEED_OTAG;
2188                         }
2189                         if (softc->outstanding_cmds > 0)
2190                                 softc->flags &= ~DA_FLAG_WENT_IDLE;
2191                         softc->ordered_tag_count = 0;
2192                         crit_exit();
2193                 }
2194                 /* Queue us up again */
2195                 callout_reset(&dasendorderedtag_ch,
2196                     (da_default_timeout * hz) / DA_ORDEREDTAG_INTERVAL,
2197                     dasendorderedtag, NULL);
2198         }
2199 }
2200
2201 /*
2202  * Step through all DA peripheral drivers, and if the device is still open,
2203  * sync the disk cache to physical media.
2204  */
2205 static void
2206 dashutdown(void * arg, int howto)
2207 {
2208         struct cam_periph *periph;
2209         struct da_softc *softc;
2210
2211         TAILQ_FOREACH(periph, &dadriver.units, unit_links) {
2212                 union ccb ccb;
2213
2214                 softc = (struct da_softc *)periph->softc;
2215
2216                 /*
2217                  * We only sync the cache if the drive is still open, and
2218                  * if the drive is capable of it..
2219                  */
2220                 if (((softc->flags & DA_FLAG_OPEN) == 0)
2221                  || (softc->quirks & DA_Q_NO_SYNC_CACHE))
2222                         continue;
2223
2224                 xpt_setup_ccb(&ccb.ccb_h, periph->path, /*priority*/1);
2225
2226                 ccb.ccb_h.ccb_state = DA_CCB_DUMP;
2227                 scsi_synchronize_cache(&ccb.csio,
2228                                        /*retries*/1,
2229                                        /*cbfcnp*/dadone,
2230                                        MSG_SIMPLE_Q_TAG,
2231                                        /*begin_lba*/0, /* whole disk */
2232                                        /*lb_count*/0,
2233                                        SSD_FULL_SIZE,
2234                                        60 * 60 * 1000);
2235
2236                 xpt_polled_action(&ccb);
2237
2238                 if ((ccb.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
2239                         if (((ccb.ccb_h.status & CAM_STATUS_MASK) ==
2240                              CAM_SCSI_STATUS_ERROR)
2241                          && (ccb.csio.scsi_status == SCSI_STATUS_CHECK_COND)){
2242                                 int error_code, sense_key, asc, ascq;
2243
2244                                 scsi_extract_sense(&ccb.csio.sense_data,
2245                                                    &error_code, &sense_key,
2246                                                    &asc, &ascq);
2247
2248                                 if (sense_key != SSD_KEY_ILLEGAL_REQUEST)
2249                                         scsi_sense_print(&ccb.csio);
2250                         } else {
2251                                 xpt_print_path(periph->path);
2252                                 kprintf("Synchronize cache failed, status "
2253                                        "== 0x%x, scsi status == 0x%x\n",
2254                                        ccb.ccb_h.status, ccb.csio.scsi_status);
2255                         }
2256                 }
2257
2258                 if ((ccb.ccb_h.status & CAM_DEV_QFRZN) != 0)
2259                         cam_release_devq(ccb.ccb_h.path,
2260                                          /*relsim_flags*/0,
2261                                          /*reduction*/0,
2262                                          /*timeout*/0,
2263                                          /*getcount_only*/0);
2264
2265         }
2266 }
2267
2268 #else /* !_KERNEL */
2269
2270 /*
2271  * XXX This is only left out of the kernel build to silence warnings.  If,
2272  * for some reason this function is used in the kernel, the ifdefs should
2273  * be moved so it is included both in the kernel and userland.
2274  */
2275 void
2276 scsi_format_unit(struct ccb_scsiio *csio, u_int32_t retries,
2277                  void (*cbfcnp)(struct cam_periph *, union ccb *),
2278                  u_int8_t tag_action, u_int8_t byte2, u_int16_t ileave,
2279                  u_int8_t *data_ptr, u_int32_t dxfer_len, u_int8_t sense_len,
2280                  u_int32_t timeout)
2281 {
2282         struct scsi_format_unit *scsi_cmd;
2283
2284         scsi_cmd = (struct scsi_format_unit *)&csio->cdb_io.cdb_bytes;
2285         scsi_cmd->opcode = FORMAT_UNIT;
2286         scsi_cmd->byte2 = byte2;
2287         scsi_ulto2b(ileave, scsi_cmd->interleave);
2288
2289         cam_fill_csio(csio,
2290                       retries,
2291                       cbfcnp,
2292                       /*flags*/ (dxfer_len > 0) ? CAM_DIR_OUT : CAM_DIR_NONE,
2293                       tag_action,
2294                       data_ptr,
2295                       dxfer_len,
2296                       sense_len,
2297                       sizeof(*scsi_cmd),
2298                       timeout);
2299 }
2300
2301 #endif /* _KERNEL */