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 1.53 2008/01/13 10:05:21 matthias 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                 "1.00"}, /*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                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Netac", "OnlyDisk*",
 559                 "2000"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 560         },
 561 };
 562
 563 static  d_open_t        daopen;
 564 static  d_close_t       daclose;
 565 static  d_strategy_t    dastrategy;
 566 static  d_dump_t        dadump;
 567 static  periph_init_t   dainit;
 568 static  void            daasync(void *callback_arg, u_int32_t code,
 569                                 struct cam_path *path, void *arg);
 570 static  int             dacmdsizesysctl(SYSCTL_HANDLER_ARGS);
 571 static  periph_ctor_t   daregister;
 572 static  periph_dtor_t   dacleanup;
 573 static  periph_start_t  dastart;
 574 static  periph_oninv_t  daoninvalidate;
 575 static  void            dadone(struct cam_periph *periph,
 576                                union ccb *done_ccb);
 577 static  int             daerror(union ccb *ccb, u_int32_t cam_flags,
 578                                 u_int32_t sense_flags);
 579 static void             daprevent(struct cam_periph *periph, int action);
 580 static int              dagetcapacity(struct cam_periph *periph);
 581 static void             dasetgeom(struct cam_periph *periph, uint32_t block_len,
 582                                   uint64_t maxsector);
 583
 584 static timeout_t        dasendorderedtag;
 585 static void             dashutdown(void *arg, int howto);
 586
 587 #ifndef DA_DEFAULT_TIMEOUT
 588 #define DA_DEFAULT_TIMEOUT 60   /* Timeout in seconds */
 589 #endif
 590
 591 #ifndef DA_DEFAULT_RETRY
 592 #define DA_DEFAULT_RETRY        4
 593 #endif
 594
 595 #ifndef DA_DEFAULT_SEND_ORDERED
 596 #define DA_DEFAULT_SEND_ORDERED 1
 597 #endif
 598
 599 static int da_retry_count = DA_DEFAULT_RETRY;
 600 static int da_default_timeout = DA_DEFAULT_TIMEOUT;
 601 static int da_send_ordered = DA_DEFAULT_SEND_ORDERED;
 602 static struct callout dasendorderedtag_ch;
 603
 604 SYSCTL_NODE(_kern_cam, OID_AUTO, da, CTLFLAG_RD, 0,
 605             "CAM Direct Access Disk driver");
 606 SYSCTL_INT(_kern_cam_da, OID_AUTO, retry_count, CTLFLAG_RW,
 607            &da_retry_count, 0, "Normal I/O retry count");
 608 TUNABLE_INT("kern.cam.da.retry_count", &da_retry_count);
 609 SYSCTL_INT(_kern_cam_da, OID_AUTO, default_timeout, CTLFLAG_RW,
 610            &da_default_timeout, 0, "Normal I/O timeout (in seconds)");
 611 TUNABLE_INT("kern.cam.da.default_timeout", &da_default_timeout);
 612 SYSCTL_INT(_kern_cam_da, OID_AUTO, da_send_ordered, CTLFLAG_RW,
 613            &da_send_ordered, 0, "Send Ordered Tags");
 614 TUNABLE_INT("kern.cam.da.da_send_ordered", &da_send_ordered);
 615
 616 /*
 617  * DA_ORDEREDTAG_INTERVAL determines how often, relative
 618  * to the default timeout, we check to see whether an ordered
 619  * tagged transaction is appropriate to prevent simple tag
 620  * starvation.  Since we'd like to ensure that there is at least
 621  * 1/2 of the timeout length left for a starved transaction to
 622  * complete after we've sent an ordered tag, we must poll at least
 623  * four times in every timeout period.  This takes care of the worst
 624  * case where a starved transaction starts during an interval that
 625  * meets the requirement "don't send an ordered tag" test so it takes
 626  * us two intervals to determine that a tag must be sent.
 627  */
 628 #ifndef DA_ORDEREDTAG_INTERVAL
 629 #define DA_ORDEREDTAG_INTERVAL 4
 630 #endif
 631
 632 static struct periph_driver dadriver =
 633 {
 634         dainit, "da",
 635         TAILQ_HEAD_INITIALIZER(dadriver.units), /* generation */ 0
 636 };
 637
 638 PERIPHDRIVER_DECLARE(da, dadriver);
 639
 640 static struct dev_ops da_ops = {
 641         { "da", DA_CDEV_MAJOR, D_DISK },
 642         .d_open =       daopen,
 643         .d_close =      daclose,
 644         .d_read =       physread,
 645         .d_write =      physwrite,
 646         .d_strategy =   dastrategy,
 647         .d_dump =       dadump
 648 };
 649
 650 static SLIST_HEAD(,da_softc) softc_list;
 651 static struct extend_array *daperiphs;
 652
 653 static int
 654 daopen(struct dev_open_args *ap)
 655 {
 656         cdev_t dev = ap->a_head.a_dev;
 657         struct cam_periph *periph;
 658         struct da_softc *softc;
 659         struct disk_info info;
 660         int unit;
 661         int error;
 662
 663         unit = dkunit(dev);
 664         crit_enter();
 665         periph = cam_extend_get(daperiphs, unit);
 666         if (periph == NULL) {
 667                 crit_exit();
 668                 return (ENXIO);
 669         }
 670
 671         softc = (struct da_softc *)periph->softc;
 672
 673         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE,
 674             ("daopen: dev=%s (unit %d)\n", devtoname(dev),
 675              unit));
 676
 677         if ((error = cam_periph_lock(periph, PCATCH)) != 0) {
 678                 crit_exit();
 679                 return (error); /* error code from tsleep */
 680         }
 681
 682         if ((softc->flags & DA_FLAG_OPEN) == 0) {
 683                 if (cam_periph_acquire(periph) != CAM_REQ_CMP) {
 684                         crit_exit();
 685                         return(ENXIO);
 686                 }
 687                 softc->flags |= DA_FLAG_OPEN;
 688         }
 689
 690         if ((softc->flags & DA_FLAG_PACK_INVALID) != 0) {
 691                 /* Invalidate our pack information. */
 692                 disk_invalidate(&softc->disk);
 693                 softc->flags &= ~DA_FLAG_PACK_INVALID;
 694         }
 695         crit_exit();
 696
 697         error = dagetcapacity(periph);
 698
 699 #if 0
 700         /* Do a read capacity */
 701         {
 702                 struct scsi_read_capacity_data *rcap;
 703                 union  ccb *ccb;
 704
 705                 rcap = kmalloc(sizeof(*rcap), M_TEMP, M_INTWAIT | M_ZERO);
 706
 707                 ccb = cam_periph_getccb(periph, /*priority*/1);
 708                 scsi_read_capacity(&ccb->csio,
 709                                    /*retries*/1,
 710                                    /*cbfncp*/dadone,
 711                                    MSG_SIMPLE_Q_TAG,
 712                                    rcap,
 713                                    SSD_FULL_SIZE,
 714                                    /*timeout*/60000);
 715                 ccb->ccb_h.ccb_bio = NULL;
 716
 717                 error = cam_periph_runccb(ccb, daerror, /*cam_flags*/0,
 718                                           /*sense_flags*/SF_RETRY_UA |
 719                                                          SF_RETRY_SELTO,
 720                                           &softc->device_stats);
 721
 722                 xpt_release_ccb(ccb);
 723
 724                 if (error == 0) {
 725                         dasetgeom(periph, rcap);
 726                 }
 727
 728                 kfree(rcap, M_TEMP);
 729         }
 730 #endif
 731
 732         if (error == 0) {
 733                 struct ccb_getdev cgd;
 734
 735                 /* Build disk information structure */
 736                 bzero(&info, sizeof(info));
 737                 info.d_type = DTYPE_SCSI;
 738
 739                 /*
 740                  * Grab the inquiry data to get the vendor and product names.
 741                  * Put them in the typename and packname for the label.
 742                  */
 743                 xpt_setup_ccb(&cgd.ccb_h, periph->path, /*priority*/ 1);
 744                 cgd.ccb_h.func_code = XPT_GDEV_TYPE;
 745                 xpt_action((union ccb *)&cgd);
 746
 747 #if 0
 748                 strncpy(label->d_typename, cgd.inq_data.vendor,
 749                         min(SID_VENDOR_SIZE, sizeof(label->d_typename)));
 750                 strncpy(label->d_packname, cgd.inq_data.product,
 751                         min(SID_PRODUCT_SIZE, sizeof(label->d_packname)));
 752 #endif
 753
 754                 /*
 755                  * Mandatory fields
 756                  */
 757                 info.d_media_blksize = softc->params.secsize;
 758                 info.d_media_blocks = softc->params.sectors;
 759                 info.d_media_size = 0;
 760
 761                 /*
 762                  * Optional fields
 763                  */
 764                 info.d_secpertrack = softc->params.secs_per_track;
 765                 info.d_nheads = softc->params.heads;
 766                 info.d_ncylinders = softc->params.cylinders;
 767                 info.d_secpercyl = softc->params.heads *
 768                                    softc->params.secs_per_track;
 769                 disk_setdiskinfo(&softc->disk, &info);
 770
 771                 /*
 772                  * Check to see whether or not the blocksize is set yet.
 773                  * If it isn't, set it and then clear the blocksize
 774                  * unavailable flag for the device statistics.
 775                  */
 776                 if ((softc->device_stats.flags & DEVSTAT_BS_UNAVAILABLE) != 0){
 777                         softc->device_stats.block_size = softc->params.secsize;
 778                         softc->device_stats.flags &= ~DEVSTAT_BS_UNAVAILABLE;
 779                 }
 780         }
 781
 782         if (error == 0) {
 783                 if ((softc->flags & DA_FLAG_PACK_REMOVABLE) != 0 &&
 784                     (softc->quirks & DA_Q_NO_PREVENT) == 0)
 785                         daprevent(periph, PR_PREVENT);
 786         } else {
 787                 softc->flags &= ~DA_FLAG_OPEN;
 788                 cam_periph_release(periph);
 789         }
 790         cam_periph_unlock(periph);
 791         return (error);
 792 }
 793
 794 static int
 795 daclose(struct dev_close_args *ap)
 796 {
 797         cdev_t dev = ap->a_head.a_dev;
 798         struct  cam_periph *periph;
 799         struct  da_softc *softc;
 800         int     unit;
 801         int     error;
 802
 803         unit = dkunit(dev);
 804         periph = cam_extend_get(daperiphs, unit);
 805         if (periph == NULL)
 806                 return (ENXIO);
 807
 808         softc = (struct da_softc *)periph->softc;
 809
 810         if ((error = cam_periph_lock(periph, 0)) != 0) {
 811                 return (error); /* error code from tsleep */
 812         }
 813
 814         if ((softc->quirks & DA_Q_NO_SYNC_CACHE) == 0) {
 815                 union   ccb *ccb;
 816
 817                 ccb = cam_periph_getccb(periph, /*priority*/1);
 818
 819                 scsi_synchronize_cache(&ccb->csio,
 820                                        /*retries*/1,
 821                                        /*cbfcnp*/dadone,
 822                                        MSG_SIMPLE_Q_TAG,
 823                                        /*begin_lba*/0,/* Cover the whole disk */
 824                                        /*lb_count*/0,
 825                                        SSD_FULL_SIZE,
 826                                        5 * 60 * 1000);
 827
 828                 cam_periph_runccb(ccb, /*error_routine*/NULL, /*cam_flags*/0,
 829                                   /*sense_flags*/SF_RETRY_UA,
 830                                   &softc->device_stats);
 831
 832                 if ((ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
 833                         if ((ccb->ccb_h.status & CAM_STATUS_MASK) ==
 834                              CAM_SCSI_STATUS_ERROR) {
 835                                 int asc, ascq;
 836                                 int sense_key, error_code;
 837
 838                                 scsi_extract_sense(&ccb->csio.sense_data,
 839                                                    &error_code,
 840                                                    &sense_key,
 841                                                    &asc, &ascq);
 842                                 if (sense_key != SSD_KEY_ILLEGAL_REQUEST)
 843                                         scsi_sense_print(&ccb->csio);
 844                         } else {
 845                                 xpt_print_path(periph->path);
 846                                 kprintf("Synchronize cache failed, status "
 847                                        "== 0x%x, scsi status == 0x%x\n",
 848                                        ccb->csio.ccb_h.status,
 849                                        ccb->csio.scsi_status);
 850                         }
 851                 }
 852
 853                 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
 854                         cam_release_devq(ccb->ccb_h.path,
 855                                          /*relsim_flags*/0,
 856                                          /*reduction*/0,
 857                                          /*timeout*/0,
 858                                          /*getcount_only*/0);
 859
 860                 xpt_release_ccb(ccb);
 861
 862         }
 863
 864         if ((softc->flags & DA_FLAG_PACK_REMOVABLE) != 0) {
 865                 if ((softc->quirks & DA_Q_NO_PREVENT) == 0)
 866                         daprevent(periph, PR_ALLOW);
 867                 /*
 868                  * If we've got removeable media, mark the blocksize as
 869                  * unavailable, since it could change when new media is
 870                  * inserted.
 871                  */
 872                 softc->device_stats.flags |= DEVSTAT_BS_UNAVAILABLE;
 873         }
 874
 875         /*
 876          * Don't compound any ref counting software bugs with more.
 877          */
 878         if (softc->flags & DA_FLAG_OPEN) {
 879                 softc->flags &= ~DA_FLAG_OPEN;
 880                 cam_periph_release(periph);
 881         } else {
 882                 xpt_print_path(periph->path);
 883                 kprintf("daclose() called on an already closed device!\n");
 884         }
 885         cam_periph_unlock(periph);
 886         return (0);
 887 }
 888
 889 /*
 890  * Actually translate the requested transfer into one the physical driver
 891  * can understand.  The transfer is described by a buf and will include
 892  * only one physical transfer.
 893  */
 894 static int
 895 dastrategy(struct dev_strategy_args *ap)
 896 {
 897         cdev_t dev = ap->a_head.a_dev;
 898         struct bio *bio = ap->a_bio;
 899         struct buf *bp = bio->bio_buf;
 900         struct cam_periph *periph;
 901         struct da_softc *softc;
 902         u_int  unit;
 903         u_int  part;
 904
 905         unit = dkunit(dev);
 906         part = dkpart(dev);
 907         periph = cam_extend_get(daperiphs, unit);
 908         if (periph == NULL) {
 909                 bp->b_error = ENXIO;
 910                 goto bad;
 911         }
 912         softc = (struct da_softc *)periph->softc;
 913 #if 0
 914         /*
 915          * check it's not too big a transfer for our adapter
 916          */
 917         scsi_minphys(bp, &sd_switch);
 918 #endif
 919
 920         /*
 921          * Mask interrupts so that the pack cannot be invalidated until
 922          * after we are in the queue.  Otherwise, we might not properly
 923          * clean up one of the buffers.
 924          */
 925         crit_enter();
 926
 927         /*
 928          * If the device has been made invalid, error out
 929          */
 930         if ((softc->flags & DA_FLAG_PACK_INVALID)) {
 931                 crit_exit();
 932                 bp->b_error = ENXIO;
 933                 goto bad;
 934         }
 935
 936         /*
 937          * Place it in the queue of disk activities for this disk
 938          */
 939         bioqdisksort(&softc->bio_queue, bio);
 940
 941         crit_exit();
 942
 943         /*
 944          * Schedule ourselves for performing the work.
 945          */
 946         xpt_schedule(periph, /* XXX priority */1);
 947
 948         return(0);
 949 bad:
 950         bp->b_flags |= B_ERROR;
 951
 952         /*
 953          * Correctly set the buf to indicate a completed xfer
 954          */
 955         bp->b_resid = bp->b_bcount;
 956         biodone(bio);
 957         return(0);
 958 }
 959
 960 static int
 961 dadump(struct dev_dump_args *ap)
 962 {
 963         cdev_t dev = ap->a_head.a_dev;
 964         struct      cam_periph *periph;
 965         struct      da_softc *softc;
 966         u_int       unit;
 967         long        blkcnt;
 968         vm_paddr_t  addr;
 969         struct      ccb_scsiio csio;
 970         int         dumppages = MAXDUMPPGS;
 971         int         i;
 972
 973         /* toss any characters present prior to dump */
 974         while (cncheckc() != -1)
 975                 ;
 976
 977         unit = dkunit(dev);
 978         periph = cam_extend_get(daperiphs, unit);
 979         if (periph == NULL) {
 980                 return (ENXIO);
 981         }
 982         softc = (struct da_softc *)periph->softc;
 983
 984         if ((softc->flags & DA_FLAG_PACK_INVALID) != 0)
 985                 return (ENXIO);
 986
 987         addr = 0;       /* starting address */
 988         blkcnt = howmany(PAGE_SIZE, ap->a_secsize);
 989
 990         while (ap->a_count > 0) {
 991                 caddr_t va = NULL;
 992
 993                 if ((ap->a_count / blkcnt) < dumppages)
 994                         dumppages = ap->a_count / blkcnt;
 995
 996                 for (i = 0; i < dumppages; ++i) {
 997                         vm_paddr_t a = addr + (i * PAGE_SIZE);
 998                         if (is_physical_memory(a))
 999                                 va = pmap_kenter_temporary(trunc_page(a), i);
1000                         else
1001                                 va = pmap_kenter_temporary(trunc_page(0), i);
1002                 }
1003
1004                 xpt_setup_ccb(&csio.ccb_h, periph->path, /*priority*/1);
1005                 csio.ccb_h.ccb_state = DA_CCB_DUMP;
1006                 scsi_read_write(&csio,
1007                                 /*retries*/1,
1008                                 dadone,
1009                                 MSG_ORDERED_Q_TAG,
1010                                 /*read*/FALSE,
1011                                 /*byte2*/0,
1012                                 /*minimum_cmd_size*/ softc->minimum_cmd_size,
1013                                 ap->a_blkno,
1014                                 blkcnt * dumppages,
1015                                 /*data_ptr*/(u_int8_t *) va,
1016                                 /*dxfer_len*/blkcnt * ap->a_secsize * dumppages,
1017                                 /*sense_len*/SSD_FULL_SIZE,
1018                                 DA_DEFAULT_TIMEOUT * 1000);
1019                 xpt_polled_action((union ccb *)&csio);
1020
1021                 if ((csio.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1022                         kprintf("Aborting dump due to I/O error.\n");
1023                         if ((csio.ccb_h.status & CAM_STATUS_MASK) ==
1024                              CAM_SCSI_STATUS_ERROR)
1025                                 scsi_sense_print(&csio);
1026                         else
1027                                 kprintf("status == 0x%x, scsi status == 0x%x\n",
1028                                        csio.ccb_h.status, csio.scsi_status);
1029                         return(EIO);
1030                 }
1031
1032                 if (dumpstatus(addr, (off_t)ap->a_count * softc->params.secsize) < 0)
1033                         return (EINTR);
1034
1035                 /* update block count */
1036                 ap->a_count -= blkcnt * dumppages;
1037                 ap->a_blkno += blkcnt * dumppages;
1038                 addr += PAGE_SIZE * dumppages;
1039         }
1040
1041         /*
1042          * Sync the disk cache contents to the physical media.
1043          */
1044         if ((softc->quirks & DA_Q_NO_SYNC_CACHE) == 0) {
1045
1046                 xpt_setup_ccb(&csio.ccb_h, periph->path, /*priority*/1);
1047                 csio.ccb_h.ccb_state = DA_CCB_DUMP;
1048                 scsi_synchronize_cache(&csio,
1049                                        /*retries*/1,
1050                                        /*cbfcnp*/dadone,
1051                                        MSG_SIMPLE_Q_TAG,
1052                                        /*begin_lba*/0,/* Cover the whole disk */
1053                                        /*lb_count*/0,
1054                                        SSD_FULL_SIZE,
1055                                        5 * 60 * 1000);
1056                 xpt_polled_action((union ccb *)&csio);
1057
1058                 if ((csio.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1059                         if ((csio.ccb_h.status & CAM_STATUS_MASK) ==
1060                              CAM_SCSI_STATUS_ERROR) {
1061                                 int asc, ascq;
1062                                 int sense_key, error_code;
1063
1064                                 scsi_extract_sense(&csio.sense_data,
1065                                                    &error_code,
1066                                                    &sense_key,
1067                                                    &asc, &ascq);
1068                                 if (sense_key != SSD_KEY_ILLEGAL_REQUEST)
1069                                         scsi_sense_print(&csio);
1070                         } else {
1071                                 xpt_print_path(periph->path);
1072                                 kprintf("Synchronize cache failed, status "
1073                                        "== 0x%x, scsi status == 0x%x\n",
1074                                        csio.ccb_h.status, csio.scsi_status);
1075                         }
1076                 }
1077         }
1078         return (0);
1079 }
1080
1081 static void
1082 dainit(void)
1083 {
1084         cam_status status;
1085         struct cam_path *path;
1086
1087         /*
1088          * Create our extend array for storing the devices we attach to.
1089          */
1090         daperiphs = cam_extend_new();
1091         SLIST_INIT(&softc_list);
1092         if (daperiphs == NULL) {
1093                 kprintf("da: Failed to alloc extend array!\n");
1094                 return;
1095         }
1096
1097         callout_init(&dasendorderedtag_ch);
1098
1099         /*
1100          * Install a global async callback.  This callback will
1101          * receive async callbacks like "new device found".
1102          */
1103         status = xpt_create_path(&path, /*periph*/NULL, CAM_XPT_PATH_ID,
1104                                  CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD);
1105
1106         if (status == CAM_REQ_CMP) {
1107                 struct ccb_setasync csa;
1108
1109                 xpt_setup_ccb(&csa.ccb_h, path, /*priority*/5);
1110                 csa.ccb_h.func_code = XPT_SASYNC_CB;
1111                 csa.event_enable = AC_FOUND_DEVICE;
1112                 csa.callback = daasync;
1113                 csa.callback_arg = NULL;
1114                 xpt_action((union ccb *)&csa);
1115                 status = csa.ccb_h.status;
1116                 xpt_free_path(path);
1117         }
1118
1119         if (status != CAM_REQ_CMP) {
1120                 kprintf("da: Failed to attach master async callback "
1121                        "due to status 0x%x!\n", status);
1122         } else if (da_send_ordered) {
1123
1124                 /*
1125                  * Schedule a periodic event to occasionally send an
1126                  * ordered tag to a device.
1127                  */
1128                 callout_reset(&dasendorderedtag_ch,
1129                     (DA_DEFAULT_TIMEOUT * hz) / DA_ORDEREDTAG_INTERVAL,
1130                     dasendorderedtag, NULL);
1131
1132                 /* Register our shutdown event handler */
1133                 if ((EVENTHANDLER_REGISTER(shutdown_post_sync, dashutdown,
1134                                            NULL, SHUTDOWN_PRI_DEFAULT)) == NULL)
1135                     kprintf("dainit: shutdown event registration failed!\n");
1136         }
1137 }
1138
1139 static void
1140 daoninvalidate(struct cam_periph *periph)
1141 {
1142         struct da_softc *softc;
1143         struct bio *q_bio;
1144         struct buf *q_bp;
1145         struct ccb_setasync csa;
1146
1147         softc = (struct da_softc *)periph->softc;
1148
1149         /*
1150          * De-register any async callbacks.
1151          */
1152         xpt_setup_ccb(&csa.ccb_h, periph->path,
1153                       /* priority */ 5);
1154         csa.ccb_h.func_code = XPT_SASYNC_CB;
1155         csa.event_enable = 0;
1156         csa.callback = daasync;
1157         csa.callback_arg = periph;
1158         xpt_action((union ccb *)&csa);
1159
1160         softc->flags |= DA_FLAG_PACK_INVALID;
1161
1162         /*
1163          * Use a critical section to keep the buffer queue from being
1164          * modified while we traverse it.
1165          */
1166         crit_enter();
1167
1168         /*
1169          * Return all queued I/O with ENXIO.
1170          * XXX Handle any transactions queued to the card
1171          *     with XPT_ABORT_CCB.
1172          */
1173         while ((q_bio = bioq_first(&softc->bio_queue)) != NULL){
1174                 bioq_remove(&softc->bio_queue, q_bio);
1175                 q_bp = q_bio->bio_buf;
1176                 q_bp->b_resid = q_bp->b_bcount;
1177                 q_bp->b_error = ENXIO;
1178                 q_bp->b_flags |= B_ERROR;
1179                 biodone(q_bio);
1180         }
1181         crit_exit();
1182
1183         SLIST_REMOVE(&softc_list, softc, da_softc, links);
1184
1185         xpt_print_path(periph->path);
1186         kprintf("lost device\n");
1187 }
1188
1189 static void
1190 dacleanup(struct cam_periph *periph)
1191 {
1192         struct da_softc *softc;
1193
1194         softc = (struct da_softc *)periph->softc;
1195
1196         devstat_remove_entry(&softc->device_stats);
1197         cam_extend_release(daperiphs, periph->unit_number);
1198         xpt_print_path(periph->path);
1199         kprintf("removing device entry\n");
1200         /*
1201          * If we can't free the sysctl tree, oh well...
1202          */
1203         if ((softc->flags & DA_FLAG_SCTX_INIT) != 0
1204             && sysctl_ctx_free(&softc->sysctl_ctx) != 0) {
1205                 xpt_print_path(periph->path);
1206                 kprintf("can't remove sysctl context\n");
1207         }
1208         if (softc->disk.d_rawdev) {
1209                 disk_destroy(&softc->disk);
1210         }
1211         kfree(softc, M_DEVBUF);
1212 }
1213
1214 static void
1215 daasync(void *callback_arg, u_int32_t code,
1216         struct cam_path *path, void *arg)
1217 {
1218         struct cam_periph *periph;
1219
1220         periph = (struct cam_periph *)callback_arg;
1221         switch (code) {
1222         case AC_FOUND_DEVICE:
1223         {
1224                 struct ccb_getdev *cgd;
1225                 cam_status status;
1226
1227                 cgd = (struct ccb_getdev *)arg;
1228                 if (cgd == NULL)
1229                         break;
1230
1231                 if (SID_TYPE(&cgd->inq_data) != T_DIRECT
1232                     && SID_TYPE(&cgd->inq_data) != T_RBC
1233                     && SID_TYPE(&cgd->inq_data) != T_OPTICAL)
1234                         break;
1235
1236                 /*
1237                  * Allocate a peripheral instance for
1238                  * this device and start the probe
1239                  * process.
1240                  */
1241                 status = cam_periph_alloc(daregister, daoninvalidate,
1242                                           dacleanup, dastart,
1243                                           "da", CAM_PERIPH_BIO,
1244                                           cgd->ccb_h.path, daasync,
1245                                           AC_FOUND_DEVICE, cgd);
1246
1247                 if (status != CAM_REQ_CMP
1248                  && status != CAM_REQ_INPROG)
1249                         kprintf("daasync: Unable to attach to new device "
1250                                 "due to status 0x%x\n", status);
1251                 break;
1252         }
1253         case AC_SENT_BDR:
1254         case AC_BUS_RESET:
1255         {
1256                 struct da_softc *softc;
1257                 struct ccb_hdr *ccbh;
1258
1259                 softc = (struct da_softc *)periph->softc;
1260                 crit_enter();
1261                 /*
1262                  * Don't fail on the expected unit attention
1263                  * that will occur.
1264                  */
1265                 softc->flags |= DA_FLAG_RETRY_UA;
1266                 LIST_FOREACH(ccbh, &softc->pending_ccbs, periph_links.le)
1267                         ccbh->ccb_state |= DA_CCB_RETRY_UA;
1268                 crit_exit();
1269                 /* FALLTHROUGH*/
1270         }
1271         default:
1272                 cam_periph_async(periph, code, path, arg);
1273                 break;
1274         }
1275 }
1276
1277 static void
1278 dasysctlinit(void *context, int pending)
1279 {
1280         struct cam_periph *periph;
1281         struct da_softc *softc;
1282         char tmpstr[80], tmpstr2[80];
1283
1284         periph = (struct cam_periph *)context;
1285         softc = (struct da_softc *)periph->softc;
1286
1287         ksnprintf(tmpstr, sizeof(tmpstr), "CAM DA unit %d", periph->unit_number);
1288         ksnprintf(tmpstr2, sizeof(tmpstr2), "%d", periph->unit_number);
1289
1290         sysctl_ctx_init(&softc->sysctl_ctx);
1291         softc->flags |= DA_FLAG_SCTX_INIT;
1292         softc->sysctl_tree = SYSCTL_ADD_NODE(&softc->sysctl_ctx,
1293                 SYSCTL_STATIC_CHILDREN(_kern_cam_da), OID_AUTO, tmpstr2,
1294                 CTLFLAG_RD, 0, tmpstr);
1295         if (softc->sysctl_tree == NULL) {
1296                 kprintf("dasysctlinit: unable to allocate sysctl tree\n");
1297                 return;
1298         }
1299
1300         /*
1301          * Now register the sysctl handler, so the user can the value on
1302          * the fly.
1303          */
1304         SYSCTL_ADD_PROC(&softc->sysctl_ctx,SYSCTL_CHILDREN(softc->sysctl_tree),
1305                 OID_AUTO, "minimum_cmd_size", CTLTYPE_INT | CTLFLAG_RW,
1306                 &softc->minimum_cmd_size, 0, dacmdsizesysctl, "I",
1307                 "Minimum CDB size");
1308 }
1309
1310 static int
1311 dacmdsizesysctl(SYSCTL_HANDLER_ARGS)
1312 {
1313         int error, value;
1314
1315         value = *(int *)arg1;
1316
1317         error = sysctl_handle_int(oidp, &value, 0, req);
1318
1319         if ((error != 0)
1320          || (req->newptr == NULL))
1321                 return (error);
1322
1323         /*
1324          * Acceptable values here are 6, 10 or 12, or 16.
1325          */
1326         if (value < 6)
1327                 value = 6;
1328         else if ((value > 6)
1329               && (value <= 10))
1330                 value = 10;
1331         else if ((value > 10)
1332               && (value <= 12))
1333                 value = 12;
1334         else if (value > 12)
1335                 value = 16;
1336
1337         *(int *)arg1 = value;
1338
1339         return (0);
1340 }
1341
1342 static cam_status
1343 daregister(struct cam_periph *periph, void *arg)
1344 {
1345         struct da_softc *softc;
1346         struct ccb_setasync csa;
1347         struct ccb_pathinq cpi;
1348         struct ccb_getdev *cgd;
1349         char tmpstr[80];
1350         caddr_t match;
1351
1352         cgd = (struct ccb_getdev *)arg;
1353         if (periph == NULL) {
1354                 kprintf("daregister: periph was NULL!!\n");
1355                 return(CAM_REQ_CMP_ERR);
1356         }
1357
1358         if (cgd == NULL) {
1359                 kprintf("daregister: no getdev CCB, can't register device\n");
1360                 return(CAM_REQ_CMP_ERR);
1361         }
1362
1363         softc = kmalloc(sizeof(*softc), M_DEVBUF, M_INTWAIT | M_ZERO);
1364         LIST_INIT(&softc->pending_ccbs);
1365         softc->state = DA_STATE_PROBE;
1366         bioq_init(&softc->bio_queue);
1367         if (SID_IS_REMOVABLE(&cgd->inq_data))
1368                 softc->flags |= DA_FLAG_PACK_REMOVABLE;
1369         if ((cgd->inq_data.flags & SID_CmdQue) != 0)
1370                 softc->flags |= DA_FLAG_TAGGED_QUEUING;
1371
1372         periph->softc = softc;
1373
1374         cam_extend_set(daperiphs, periph->unit_number, periph);
1375
1376         /*
1377          * See if this device has any quirks.
1378          */
1379         match = cam_quirkmatch((caddr_t)&cgd->inq_data,
1380                                (caddr_t)da_quirk_table,
1381                                sizeof(da_quirk_table)/sizeof(*da_quirk_table),
1382                                sizeof(*da_quirk_table), scsi_inquiry_match);
1383
1384         if (match != NULL)
1385                 softc->quirks = ((struct da_quirk_entry *)match)->quirks;
1386         else
1387                 softc->quirks = DA_Q_NONE;
1388
1389         TASK_INIT(&softc->sysctl_task, 0, dasysctlinit, periph);
1390
1391         /* Check if the SIM does not want 6 byte commands */
1392         xpt_setup_ccb(&cpi.ccb_h, periph->path, /*priority*/1);
1393         cpi.ccb_h.func_code = XPT_PATH_INQ;
1394         xpt_action((union ccb *)&cpi);
1395         if (cpi.ccb_h.status == CAM_REQ_CMP && (cpi.hba_misc & PIM_NO_6_BYTE))
1396                 softc->quirks |= DA_Q_NO_6_BYTE;
1397
1398         /*
1399          * RBC devices don't have to support READ(6), only READ(10).
1400          */
1401         if (softc->quirks & DA_Q_NO_6_BYTE || SID_TYPE(&cgd->inq_data) == T_RBC)
1402                 softc->minimum_cmd_size = 10;
1403         else
1404                 softc->minimum_cmd_size = 6;
1405
1406         /*
1407          * Load the user's default, if any.
1408          */
1409         ksnprintf(tmpstr, sizeof(tmpstr), "kern.cam.da.%d.minimum_cmd_size",
1410                  periph->unit_number);
1411         TUNABLE_INT_FETCH(tmpstr, &softc->minimum_cmd_size);
1412
1413         /*
1414          * 6, 10, 12, and 16 are the currently permissible values.
1415          */
1416         if (softc->minimum_cmd_size < 6)
1417                 softc->minimum_cmd_size = 6;
1418         else if ((softc->minimum_cmd_size > 6)
1419               && (softc->minimum_cmd_size <= 10))
1420                 softc->minimum_cmd_size = 10;
1421         else if ((softc->minimum_cmd_size > 10)
1422               && (softc->minimum_cmd_size <= 12))
1423                 softc->minimum_cmd_size = 12;
1424         else if (softc->minimum_cmd_size > 12)
1425                 softc->minimum_cmd_size = 16;
1426
1427         /*
1428          * Block our timeout handler while we
1429          * add this softc to the dev list.
1430          */
1431         crit_enter();
1432         SLIST_INSERT_HEAD(&softc_list, softc, links);
1433         crit_exit();
1434
1435         /*
1436          * The DA driver supports a blocksize, but
1437          * we don't know the blocksize until we do
1438          * a read capacity.  So, set a flag to
1439          * indicate that the blocksize is
1440          * unavailable right now.  We'll clear the
1441          * flag as soon as we've done a read capacity.
1442          */
1443         devstat_add_entry(&softc->device_stats, "da",
1444                           periph->unit_number, 0,
1445                           DEVSTAT_BS_UNAVAILABLE,
1446                           SID_TYPE(&cgd->inq_data) | DEVSTAT_TYPE_IF_SCSI,
1447                           DEVSTAT_PRIORITY_DISK);
1448
1449         /*
1450          * Register this media as a disk
1451          */
1452         disk_create(periph->unit_number, &softc->disk, &da_ops);
1453         softc->disk.d_rawdev->si_iosize_max = MAXPHYS;
1454
1455         /*
1456          * Add async callbacks for bus reset and
1457          * bus device reset calls.  I don't bother
1458          * checking if this fails as, in most cases,
1459          * the system will function just fine without
1460          * them and the only alternative would be to
1461          * not attach the device on failure.
1462          */
1463         xpt_setup_ccb(&csa.ccb_h, periph->path, /*priority*/5);
1464         csa.ccb_h.func_code = XPT_SASYNC_CB;
1465         csa.event_enable = AC_SENT_BDR | AC_BUS_RESET | AC_LOST_DEVICE;
1466         csa.callback = daasync;
1467         csa.callback_arg = periph;
1468         xpt_action((union ccb *)&csa);
1469         /*
1470          * Lock this peripheral until we are setup.
1471          * This first call can't block
1472          */
1473         cam_periph_lock(periph, 0);
1474         xpt_schedule(periph, /*priority*/5);
1475
1476         return(CAM_REQ_CMP);
1477 }
1478
1479 static void
1480 dastart(struct cam_periph *periph, union ccb *start_ccb)
1481 {
1482         struct da_softc *softc;
1483
1484         softc = (struct da_softc *)periph->softc;
1485
1486
1487         switch (softc->state) {
1488         case DA_STATE_NORMAL:
1489         {
1490                 /* Pull a buffer from the queue and get going on it */
1491                 struct bio *bio;
1492                 struct buf *bp;
1493
1494                 /*
1495                  * See if there is a buf with work for us to do..
1496                  */
1497                 crit_enter();
1498                 bio = bioq_first(&softc->bio_queue);
1499                 if (periph->immediate_priority <= periph->pinfo.priority) {
1500                         CAM_DEBUG_PRINT(CAM_DEBUG_SUBTRACE,
1501                                         ("queuing for immediate ccb\n"));
1502                         start_ccb->ccb_h.ccb_state = DA_CCB_WAITING;
1503                         SLIST_INSERT_HEAD(&periph->ccb_list, &start_ccb->ccb_h,
1504                                           periph_links.sle);
1505                         periph->immediate_priority = CAM_PRIORITY_NONE;
1506                         crit_exit();
1507                         wakeup(&periph->ccb_list);
1508                 } else if (bio == NULL) {
1509                         crit_exit();
1510                         xpt_release_ccb(start_ccb);
1511                 } else {
1512                         u_int8_t tag_code;
1513
1514                         bioq_remove(&softc->bio_queue, bio);
1515                         bp = bio->bio_buf;
1516
1517                         devstat_start_transaction(&softc->device_stats);
1518
1519                         if ((bp->b_flags & B_ORDERED) != 0
1520                          || (softc->flags & DA_FLAG_NEED_OTAG) != 0) {
1521                                 softc->flags &= ~DA_FLAG_NEED_OTAG;
1522                                 softc->ordered_tag_count++;
1523                                 tag_code = MSG_ORDERED_Q_TAG;
1524                         } else {
1525                                 tag_code = MSG_SIMPLE_Q_TAG;
1526                         }
1527
1528                         KKASSERT(bio->bio_offset % softc->params.secsize == 0);
1529
1530                         scsi_read_write(&start_ccb->csio,
1531                                         /*retries*/da_retry_count,
1532                                         dadone,
1533                                         tag_code,
1534                                         (bp->b_cmd == BUF_CMD_READ),
1535                                         /*byte2*/0,
1536                                         softc->minimum_cmd_size,
1537                                         bio->bio_offset / softc->params.secsize,
1538                                         bp->b_bcount / softc->params.secsize,
1539                                         bp->b_data,
1540                                         bp->b_bcount,
1541                                         /*sense_len*/SSD_FULL_SIZE,
1542                                         da_default_timeout * 1000);
1543                         start_ccb->ccb_h.ccb_state = DA_CCB_BUFFER_IO;
1544
1545                         /*
1546                          * Block out any asyncronous callbacks
1547                          * while we touch the pending ccb list.
1548                          */
1549                         LIST_INSERT_HEAD(&softc->pending_ccbs,
1550                                          &start_ccb->ccb_h, periph_links.le);
1551
1552                         softc->outstanding_cmds++;
1553                         /* We expect a unit attention from this device */
1554                         if ((softc->flags & DA_FLAG_RETRY_UA) != 0) {
1555                                 start_ccb->ccb_h.ccb_state |= DA_CCB_RETRY_UA;
1556                                 softc->flags &= ~DA_FLAG_RETRY_UA;
1557                         }
1558
1559                         start_ccb->ccb_h.ccb_bio = bio;
1560                         bio = bioq_first(&softc->bio_queue);
1561                         crit_exit();
1562
1563                         xpt_action(start_ccb);
1564                 }
1565
1566                 if (bio != NULL) {
1567                         /* Have more work to do, so ensure we stay scheduled */
1568                         xpt_schedule(periph, /* XXX priority */1);
1569                 }
1570                 break;
1571         }
1572         case DA_STATE_PROBE:
1573         {
1574                 struct ccb_scsiio *csio;
1575                 struct scsi_read_capacity_data *rcap;
1576
1577                 rcap = kmalloc(sizeof(*rcap), M_TEMP, M_INTWAIT | M_ZERO);
1578                 csio = &start_ccb->csio;
1579                 scsi_read_capacity(csio,
1580                                    /*retries*/4,
1581                                    dadone,
1582                                    MSG_SIMPLE_Q_TAG,
1583                                    rcap,
1584                                    SSD_FULL_SIZE,
1585                                    /*timeout*/5000);
1586                 start_ccb->ccb_h.ccb_bio = NULL;
1587                 start_ccb->ccb_h.ccb_state = DA_CCB_PROBE;
1588                 xpt_action(start_ccb);
1589                 break;
1590         }
1591         case DA_STATE_PROBE2:
1592         {
1593                 struct ccb_scsiio *csio;
1594                 struct scsi_read_capacity_data_long *rcaplong;
1595
1596                 rcaplong = (struct scsi_read_capacity_data_long *)
1597                 kmalloc(sizeof(*rcaplong), M_TEMP, M_INTWAIT);
1598                 if (rcaplong == NULL) {
1599                         kprintf("dastart: Couldn't allocate read_capacity\n");
1600                         /* da_free_periph??? */
1601                         break;
1602                 }
1603                 csio = &start_ccb->csio;
1604                 scsi_read_capacity_16(csio,
1605                                     /*retries*/ 4,
1606                                     /*cbfcnp*/ dadone,
1607                                     /*tag_action*/ MSG_SIMPLE_Q_TAG,
1608                                     /*lba*/ 0,
1609                                     /*reladr*/ 0,
1610                                     /*pmi*/ 0,
1611                                     rcaplong,
1612                                     /*sense_len*/ SSD_FULL_SIZE,
1613                                     /*timeout*/ 60000);
1614                 start_ccb->ccb_h.ccb_bio = NULL;
1615                 start_ccb->ccb_h.ccb_state = DA_CCB_PROBE2;
1616                 xpt_action(start_ccb);
1617                 break;
1618         }
1619         }
1620 }
1621
1622 static int
1623 cmd6workaround(union ccb *ccb)
1624 {
1625         struct scsi_rw_6 cmd6;
1626         struct scsi_rw_10 *cmd10;
1627         struct da_softc *softc;
1628         u_int8_t *cdb;
1629         int frozen;
1630
1631         cdb = ccb->csio.cdb_io.cdb_bytes;
1632
1633         /* Translation only possible if CDB is an array and cmd is R/W6 */
1634         if ((ccb->ccb_h.flags & CAM_CDB_POINTER) != 0 ||
1635             (*cdb != READ_6 && *cdb != WRITE_6))
1636                 return 0;
1637
1638         xpt_print_path(ccb->ccb_h.path);
1639         kprintf("READ(6)/WRITE(6) not supported, "
1640                "increasing minimum_cmd_size to 10.\n");
1641         softc = (struct da_softc *)xpt_path_periph(ccb->ccb_h.path)->softc;
1642         softc->minimum_cmd_size = 10;
1643
1644         bcopy(cdb, &cmd6, sizeof(struct scsi_rw_6));
1645         cmd10 = (struct scsi_rw_10 *)cdb;
1646         cmd10->opcode = (cmd6.opcode == READ_6) ? READ_10 : WRITE_10;
1647         cmd10->byte2 = 0;
1648         scsi_ulto4b(scsi_3btoul(cmd6.addr), cmd10->addr);
1649         cmd10->reserved = 0;
1650         scsi_ulto2b(cmd6.length, cmd10->length);
1651         cmd10->control = cmd6.control;
1652         ccb->csio.cdb_len = sizeof(*cmd10);
1653
1654         /* Requeue request, unfreezing queue if necessary */
1655         frozen = (ccb->ccb_h.status & CAM_DEV_QFRZN) != 0;
1656         ccb->ccb_h.status = CAM_REQUEUE_REQ;
1657         xpt_action(ccb);
1658         if (frozen) {
1659                 cam_release_devq(ccb->ccb_h.path,
1660                                  /*relsim_flags*/0,
1661                                  /*reduction*/0,
1662                                  /*timeout*/0,
1663                                  /*getcount_only*/0);
1664         }
1665         return (ERESTART);
1666 }
1667
1668 static void
1669 dadone(struct cam_periph *periph, union ccb *done_ccb)
1670 {
1671         struct da_softc *softc;
1672         struct ccb_scsiio *csio;
1673
1674         softc = (struct da_softc *)periph->softc;
1675         csio = &done_ccb->csio;
1676         switch (csio->ccb_h.ccb_state & DA_CCB_TYPE_MASK) {
1677         case DA_CCB_BUFFER_IO:
1678         {
1679                 struct buf *bp;
1680                 struct bio *bio;
1681
1682                 bio = (struct bio *)done_ccb->ccb_h.ccb_bio;
1683                 bp = bio->bio_buf;
1684                 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1685                         int error;
1686                         int sf;
1687
1688                         if ((csio->ccb_h.ccb_state & DA_CCB_RETRY_UA) != 0)
1689                                 sf = SF_RETRY_UA;
1690                         else
1691                                 sf = 0;
1692
1693                         error = daerror(done_ccb, CAM_RETRY_SELTO, sf);
1694                         if (error == ERESTART) {
1695                                 /*
1696                                  * A retry was scheuled, so
1697                                  * just return.
1698                                  */
1699                                 return;
1700                         }
1701                         if (error != 0) {
1702                                 struct bio *q_bio;
1703                                 struct buf *q_bp;
1704
1705                                 crit_enter();
1706
1707                                 if (error == ENXIO) {
1708                                         /*
1709                                          * Catastrophic error.  Mark our pack as
1710                                          * invalid.
1711                                          */
1712                                         /* XXX See if this is really a media
1713                                          *     change first.
1714                                          */
1715                                         xpt_print_path(periph->path);
1716                                         kprintf("Invalidating pack\n");
1717                                         softc->flags |= DA_FLAG_PACK_INVALID;
1718                                 }
1719
1720                                 /*
1721                                  * return all queued I/O with EIO, so that
1722                                  * the client can retry these I/Os in the
1723                                  * proper order should it attempt to recover.
1724                                  */
1725                                 while ((q_bio = bioq_first(&softc->bio_queue))
1726                                         != NULL) {
1727                                         bioq_remove(&softc->bio_queue, q_bio);
1728                                         q_bp = q_bio->bio_buf;
1729                                         q_bp->b_resid = q_bp->b_bcount;
1730                                         q_bp->b_error = EIO;
1731                                         q_bp->b_flags |= B_ERROR;
1732                                         biodone(q_bio);
1733                                 }
1734                                 crit_exit();
1735                                 bp->b_error = error;
1736                                 bp->b_resid = bp->b_bcount;
1737                                 bp->b_flags |= B_ERROR;
1738                         } else {
1739                                 bp->b_resid = csio->resid;
1740                                 bp->b_error = 0;
1741                                 if (bp->b_resid != 0)
1742                                         bp->b_flags |= B_ERROR;
1743                         }
1744                         if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
1745                                 cam_release_devq(done_ccb->ccb_h.path,
1746                                                  /*relsim_flags*/0,
1747                                                  /*reduction*/0,
1748                                                  /*timeout*/0,
1749                                                  /*getcount_only*/0);
1750                 } else {
1751                         if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
1752                                 panic("REQ_CMP with QFRZN");
1753                         bp->b_resid = csio->resid;
1754                         if (csio->resid > 0)
1755                                 bp->b_flags |= B_ERROR;
1756                 }
1757
1758                 /*
1759                  * Block out any asyncronous callbacks
1760                  * while we touch the pending ccb list.
1761                  */
1762                 crit_enter();
1763                 LIST_REMOVE(&done_ccb->ccb_h, periph_links.le);
1764                 softc->outstanding_cmds--;
1765                 if (softc->outstanding_cmds == 0)
1766                         softc->flags |= DA_FLAG_WENT_IDLE;
1767                 crit_exit();
1768
1769                 devstat_end_transaction_buf(&softc->device_stats, bp);
1770                 biodone(bio);
1771                 break;
1772         }
1773         case DA_CCB_PROBE:
1774         case DA_CCB_PROBE2:
1775         {
1776                 struct     scsi_read_capacity_data *rdcap;
1777                 struct     scsi_read_capacity_data_long *rcaplong;
1778                 char       announce_buf[80];
1779
1780                 rdcap = NULL;
1781                 rcaplong = NULL;
1782                 if (softc->state == DA_STATE_PROBE)
1783                         rdcap =(struct scsi_read_capacity_data *)csio->data_ptr;
1784                 else
1785                         rcaplong = (struct scsi_read_capacity_data_long *)
1786                                     csio->data_ptr;
1787
1788                 if ((csio->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP) {
1789                         struct disk_params *dp;
1790                         uint32_t block_size;
1791                         uint64_t maxsector;
1792
1793                         if (softc->state == DA_STATE_PROBE) {
1794                                 block_size = scsi_4btoul(rdcap->length);
1795                                 maxsector = scsi_4btoul(rdcap->addr);
1796
1797                                 /*
1798                                  * According to SBC-2, if the standard 10
1799                                  * byte READ CAPACITY command returns 2^32,
1800                                  * we should issue the 16 byte version of
1801                                  * the command, since the device in question
1802                                  * has more sectors than can be represented
1803                                  * with the short version of the command.
1804                                  */
1805                                 if (maxsector == 0xffffffff) {
1806                                         softc->state = DA_STATE_PROBE2;
1807                                         kfree(rdcap, M_TEMP);
1808                                         xpt_release_ccb(done_ccb);
1809                                         xpt_schedule(periph, /*priority*/5);
1810                                         return;
1811                                 }
1812                         } else {
1813                                 block_size = scsi_4btoul(rcaplong->length);
1814                                 maxsector = scsi_8btou64(rcaplong->addr);
1815                         }
1816                         dasetgeom(periph, block_size, maxsector);
1817                         dp = &softc->params;
1818                         ksnprintf(announce_buf, sizeof(announce_buf),
1819                                 "%juMB (%ju %u byte sectors: %dH %dS/T %dC)",
1820                                 (uintmax_t) (((uintmax_t)dp->secsize *
1821                                 dp->sectors) / (1024*1024)),
1822                                 (uintmax_t)dp->sectors,
1823                                 dp->secsize, dp->heads, dp->secs_per_track,
1824                                 dp->cylinders);
1825                 } else {
1826                         int     error;
1827
1828                         announce_buf[0] = '\0';
1829
1830                         /*
1831                          * Retry any UNIT ATTENTION type errors.  They
1832                          * are expected at boot.
1833                          */
1834                         error = daerror(done_ccb, CAM_RETRY_SELTO,
1835                                         SF_RETRY_UA|SF_NO_PRINT);
1836                         if (error == ERESTART) {
1837                                 /*
1838                                  * A retry was scheuled, so
1839                                  * just return.
1840                                  */
1841                                 return;
1842                         } else if (error != 0) {
1843                                 struct scsi_sense_data *sense;
1844                                 int asc, ascq;
1845                                 int sense_key, error_code;
1846                                 int have_sense;
1847                                 cam_status status;
1848                                 struct ccb_getdev cgd;
1849
1850                                 /* Don't wedge this device's queue */
1851                                 status = done_ccb->ccb_h.status;
1852                                 if ((status & CAM_DEV_QFRZN) != 0)
1853                                         cam_release_devq(done_ccb->ccb_h.path,
1854                                                          /*relsim_flags*/0,
1855                                                          /*reduction*/0,
1856                                                          /*timeout*/0,
1857                                                          /*getcount_only*/0);
1858
1859
1860                                 xpt_setup_ccb(&cgd.ccb_h,
1861                                               done_ccb->ccb_h.path,
1862                                               /* priority */ 1);
1863                                 cgd.ccb_h.func_code = XPT_GDEV_TYPE;
1864                                 xpt_action((union ccb *)&cgd);
1865
1866                                 if (((csio->ccb_h.flags & CAM_SENSE_PHYS) != 0)
1867                                  || ((csio->ccb_h.flags & CAM_SENSE_PTR) != 0)
1868                                  || ((status & CAM_AUTOSNS_VALID) == 0))
1869                                         have_sense = FALSE;
1870                                 else
1871                                         have_sense = TRUE;
1872
1873                                 if (have_sense) {
1874                                         sense = &csio->sense_data;
1875                                         scsi_extract_sense(sense, &error_code,
1876                                                            &sense_key,
1877                                                            &asc, &ascq);
1878                                 }
1879                                 /*
1880                                  * Attach to anything that claims to be a
1881                                  * direct access or optical disk device,
1882                                  * as long as it doesn't return a "Logical
1883                                  * unit not supported" (0x25) error.
1884                                  */
1885                                 if ((have_sense) && (asc != 0x25)
1886                                  && (error_code == SSD_CURRENT_ERROR)) {
1887                                         const char *sense_key_desc;
1888                                         const char *asc_desc;
1889
1890                                         scsi_sense_desc(sense_key, asc, ascq,
1891                                                         &cgd.inq_data,
1892                                                         &sense_key_desc,
1893                                                         &asc_desc);
1894                                         ksnprintf(announce_buf,
1895                                             sizeof(announce_buf),
1896                                                 "Attempt to query device "
1897                                                 "size failed: %s, %s",
1898                                                 sense_key_desc,
1899                                                 asc_desc);
1900                                 } else {
1901                                         if (have_sense)
1902                                                 scsi_sense_print(
1903                                                         &done_ccb->csio);
1904                                         else {
1905                                                 xpt_print_path(periph->path);
1906                                                 kprintf("got CAM status %#x\n",
1907                                                        done_ccb->ccb_h.status);
1908                                         }
1909
1910                                         xpt_print_path(periph->path);
1911                                         kprintf("fatal error, failed"
1912                                                " to attach to device\n");
1913
1914                                         /*
1915                                          * Free up resources.
1916                                          */
1917                                         cam_periph_invalidate(periph);
1918                                 }
1919                         }
1920                 }
1921                 kfree(csio->data_ptr, M_TEMP);
1922                 if (announce_buf[0] != '\0') {
1923                         xpt_announce_periph(periph, announce_buf);
1924                         /*
1925                          * Create our sysctl variables, now that we know
1926                          * we have successfully attached.
1927                          */
1928                         taskqueue_enqueue(taskqueue_thread[mycpuid],
1929                             &softc->sysctl_task);
1930                 }
1931                 softc->state = DA_STATE_NORMAL;
1932                 /*
1933                  * Since our peripheral may be invalidated by an error
1934                  * above or an external event, we must release our CCB
1935                  * before releasing the probe lock on the peripheral.
1936                  * The peripheral will only go away once the last lock
1937                  * is removed, and we need it around for the CCB release
1938                  * operation.
1939                  */
1940                 xpt_release_ccb(done_ccb);
1941                 cam_periph_unlock(periph);
1942                 return;
1943         }
1944         case DA_CCB_WAITING:
1945         {
1946                 /* Caller will release the CCB */
1947                 wakeup(&done_ccb->ccb_h.cbfcnp);
1948                 return;
1949         }
1950         case DA_CCB_DUMP:
1951                 /* No-op.  We're polling */
1952                 return;
1953         default:
1954                 break;
1955         }
1956         xpt_release_ccb(done_ccb);
1957 }
1958
1959 static int
1960 daerror(union ccb *ccb, u_int32_t cam_flags, u_int32_t sense_flags)
1961 {
1962         struct da_softc   *softc;
1963         struct cam_periph *periph;
1964         int error;
1965
1966         periph = xpt_path_periph(ccb->ccb_h.path);
1967         softc = (struct da_softc *)periph->softc;
1968
1969         /*
1970          * Automatically detect devices that do not support
1971          * READ(6)/WRITE(6) and upgrade to using 10 byte cdbs.
1972          */
1973         error = 0;
1974         if ((ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_INVALID) {
1975                 error = cmd6workaround(ccb);
1976         } else if (((ccb->ccb_h.status & CAM_STATUS_MASK) ==
1977                    CAM_SCSI_STATUS_ERROR)
1978          && (ccb->ccb_h.status & CAM_AUTOSNS_VALID)
1979          && (ccb->csio.scsi_status == SCSI_STATUS_CHECK_COND)
1980          && ((ccb->ccb_h.flags & CAM_SENSE_PHYS) == 0)
1981          && ((ccb->ccb_h.flags & CAM_SENSE_PTR) == 0)) {
1982                 int sense_key, error_code, asc, ascq;
1983
1984                 scsi_extract_sense(&ccb->csio.sense_data,
1985                                    &error_code, &sense_key, &asc, &ascq);
1986                 if (sense_key == SSD_KEY_ILLEGAL_REQUEST)
1987                         error = cmd6workaround(ccb);
1988         }
1989         if (error == ERESTART)
1990                 return (ERESTART);
1991
1992         /*
1993          * XXX
1994          * Until we have a better way of doing pack validation,
1995          * don't treat UAs as errors.
1996          */
1997         sense_flags |= SF_RETRY_UA;
1998         return(cam_periph_error(ccb, cam_flags, sense_flags,
1999                                 &softc->saved_ccb));
2000 }
2001
2002 static void
2003 daprevent(struct cam_periph *periph, int action)
2004 {
2005         struct  da_softc *softc;
2006         union   ccb *ccb;
2007         int     error;
2008
2009         softc = (struct da_softc *)periph->softc;
2010
2011         if (((action == PR_ALLOW)
2012           && (softc->flags & DA_FLAG_PACK_LOCKED) == 0)
2013          || ((action == PR_PREVENT)
2014           && (softc->flags & DA_FLAG_PACK_LOCKED) != 0)) {
2015                 return;
2016         }
2017
2018         ccb = cam_periph_getccb(periph, /*priority*/1);
2019
2020         scsi_prevent(&ccb->csio,
2021                      /*retries*/1,
2022                      /*cbcfp*/dadone,
2023                      MSG_SIMPLE_Q_TAG,
2024                      action,
2025                      SSD_FULL_SIZE,
2026                      5000);
2027
2028         error = cam_periph_runccb(ccb, /*error_routine*/NULL, CAM_RETRY_SELTO,
2029                                   SF_RETRY_UA, &softc->device_stats);
2030
2031         if (error == 0) {
2032                 if (action == PR_ALLOW)
2033                         softc->flags &= ~DA_FLAG_PACK_LOCKED;
2034                 else
2035                         softc->flags |= DA_FLAG_PACK_LOCKED;
2036         }
2037
2038         xpt_release_ccb(ccb);
2039 }
2040
2041 static int
2042 dagetcapacity(struct cam_periph *periph)
2043 {
2044         struct da_softc *softc;
2045         union ccb *ccb;
2046         struct scsi_read_capacity_data *rcap;
2047         struct scsi_read_capacity_data_long *rcaplong;
2048         uint32_t block_len;
2049         uint64_t maxsector;
2050         int error;
2051
2052         softc = (struct da_softc *)periph->softc;
2053         block_len = 0;
2054         maxsector = 0;
2055         error = 0;
2056
2057         /* Do a read capacity */
2058         rcap = (void *)kmalloc(sizeof(*rcaplong), M_TEMP, M_INTWAIT);
2059
2060         ccb = cam_periph_getccb(periph, /*priority*/1);
2061         scsi_read_capacity(&ccb->csio,
2062                            /*retries*/4,
2063                            /*cbfncp*/dadone,
2064                            MSG_SIMPLE_Q_TAG,
2065                            rcap,
2066                            SSD_FULL_SIZE,
2067                            /*timeout*/60000);
2068         ccb->ccb_h.ccb_bio = NULL;
2069
2070         error = cam_periph_runccb(ccb, daerror,
2071                                   /*cam_flags*/CAM_RETRY_SELTO,
2072                                   /*sense_flags*/SF_RETRY_UA,
2073                                   &softc->device_stats);
2074
2075         if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
2076                 cam_release_devq(ccb->ccb_h.path,
2077                                  /*relsim_flags*/0,
2078                                  /*reduction*/0,
2079                                  /*timeout*/0,
2080                                  /*getcount_only*/0);
2081
2082         if (error == 0) {
2083                 block_len = scsi_4btoul(rcap->length);
2084                 maxsector = scsi_4btoul(rcap->addr);
2085
2086                 if (maxsector != 0xffffffff)
2087                         goto done;
2088         } else
2089                 goto done;
2090
2091         rcaplong = (struct scsi_read_capacity_data_long *)rcap;
2092
2093         scsi_read_capacity_16(&ccb->csio,
2094                               /*retries*/ 4,
2095                               /*cbfcnp*/ dadone,
2096                               /*tag_action*/ MSG_SIMPLE_Q_TAG,
2097                               /*lba*/ 0,
2098                               /*reladr*/ 0,
2099                               /*pmi*/ 0,
2100                               rcaplong,
2101                               /*sense_len*/ SSD_FULL_SIZE,
2102                               /*timeout*/ 60000);
2103         ccb->ccb_h.ccb_bio = NULL;
2104
2105         error = cam_periph_runccb(ccb, daerror,
2106                                   /*cam_flags*/CAM_RETRY_SELTO,
2107                                   /*sense_flags*/SF_RETRY_UA,
2108                                   &softc->device_stats);
2109
2110         if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
2111                 cam_release_devq(ccb->ccb_h.path,
2112                                  /*relsim_flags*/0,
2113                                  /*reduction*/0,
2114                                  /*timeout*/0,
2115                                  /*getcount_only*/0);
2116
2117         if (error == 0) {
2118                 block_len = scsi_4btoul(rcaplong->length);
2119                 maxsector = scsi_8btou64(rcaplong->addr);
2120         }
2121
2122 done:
2123
2124         if (error == 0)
2125                 dasetgeom(periph, block_len, maxsector);
2126
2127         xpt_release_ccb(ccb);
2128
2129         kfree(rcap, M_TEMP);
2130
2131         return (error);
2132 }
2133
2134 static void
2135 dasetgeom(struct cam_periph *periph, uint32_t block_len, uint64_t maxsector)
2136 {
2137         struct ccb_calc_geometry ccg;
2138         struct da_softc *softc;
2139         struct disk_params *dp;
2140
2141         softc = (struct da_softc *)periph->softc;
2142
2143         dp = &softc->params;
2144         dp->secsize = block_len;
2145         dp->sectors = maxsector + 1;
2146         /*
2147          * Have the controller provide us with a geometry
2148          * for this disk.  The only time the geometry
2149          * matters is when we boot and the controller
2150          * is the only one knowledgeable enough to come
2151          * up with something that will make this a bootable
2152          * device.
2153          */
2154         xpt_setup_ccb(&ccg.ccb_h, periph->path, /*priority*/1);
2155         ccg.ccb_h.func_code = XPT_CALC_GEOMETRY;
2156         ccg.block_size = dp->secsize;
2157         ccg.volume_size = dp->sectors;
2158         ccg.heads = 0;
2159         ccg.secs_per_track = 0;
2160         ccg.cylinders = 0;
2161         xpt_action((union ccb*)&ccg);
2162         if ((ccg.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
2163                 /*
2164                  * We don't know what went wrong here- but just pick
2165                  * a geometry so we don't have nasty things like divide
2166                  * by zero.
2167                  */
2168                 dp->heads = 255;
2169                 dp->secs_per_track = 255;
2170                 dp->cylinders = dp->sectors / (255 * 255);
2171                 if (dp->cylinders == 0) {
2172                         dp->cylinders = 1;
2173                 }
2174         } else {
2175                 dp->heads = ccg.heads;
2176                 dp->secs_per_track = ccg.secs_per_track;
2177                 dp->cylinders = ccg.cylinders;
2178         }
2179 }
2180
2181 static void
2182 dasendorderedtag(void *arg)
2183 {
2184         struct da_softc *softc;
2185
2186         if (da_send_ordered) {
2187                 SLIST_FOREACH(softc, &softc_list, links) {
2188                         crit_enter();
2189                         if ((softc->ordered_tag_count == 0)
2190                          && ((softc->flags & DA_FLAG_WENT_IDLE) == 0)) {
2191                                 softc->flags |= DA_FLAG_NEED_OTAG;
2192                         }
2193                         if (softc->outstanding_cmds > 0)
2194                                 softc->flags &= ~DA_FLAG_WENT_IDLE;
2195                         softc->ordered_tag_count = 0;
2196                         crit_exit();
2197                 }
2198                 /* Queue us up again */
2199                 callout_reset(&dasendorderedtag_ch,
2200                     (da_default_timeout * hz) / DA_ORDEREDTAG_INTERVAL,
2201                     dasendorderedtag, NULL);
2202         }
2203 }
2204
2205 /*
2206  * Step through all DA peripheral drivers, and if the device is still open,
2207  * sync the disk cache to physical media.
2208  */
2209 static void
2210 dashutdown(void * arg, int howto)
2211 {
2212         struct cam_periph *periph;
2213         struct da_softc *softc;
2214
2215         TAILQ_FOREACH(periph, &dadriver.units, unit_links) {
2216                 union ccb ccb;
2217
2218                 softc = (struct da_softc *)periph->softc;
2219
2220                 /*
2221                  * We only sync the cache if the drive is still open, and
2222                  * if the drive is capable of it..
2223                  */
2224                 if (((softc->flags & DA_FLAG_OPEN) == 0)
2225                  || (softc->quirks & DA_Q_NO_SYNC_CACHE))
2226                         continue;
2227
2228                 xpt_setup_ccb(&ccb.ccb_h, periph->path, /*priority*/1);
2229
2230                 ccb.ccb_h.ccb_state = DA_CCB_DUMP;
2231                 scsi_synchronize_cache(&ccb.csio,
2232                                        /*retries*/1,
2233                                        /*cbfcnp*/dadone,
2234                                        MSG_SIMPLE_Q_TAG,
2235                                        /*begin_lba*/0, /* whole disk */
2236                                        /*lb_count*/0,
2237                                        SSD_FULL_SIZE,
2238                                        60 * 60 * 1000);
2239
2240                 xpt_polled_action(&ccb);
2241
2242                 if ((ccb.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
2243                         if (((ccb.ccb_h.status & CAM_STATUS_MASK) ==
2244                              CAM_SCSI_STATUS_ERROR)
2245                          && (ccb.csio.scsi_status == SCSI_STATUS_CHECK_COND)){
2246                                 int error_code, sense_key, asc, ascq;
2247
2248                                 scsi_extract_sense(&ccb.csio.sense_data,
2249                                                    &error_code, &sense_key,
2250                                                    &asc, &ascq);
2251
2252                                 if (sense_key != SSD_KEY_ILLEGAL_REQUEST)
2253                                         scsi_sense_print(&ccb.csio);
2254                         } else {
2255                                 xpt_print_path(periph->path);
2256                                 kprintf("Synchronize cache failed, status "
2257                                        "== 0x%x, scsi status == 0x%x\n",
2258                                        ccb.ccb_h.status, ccb.csio.scsi_status);
2259                         }
2260                 }
2261
2262                 if ((ccb.ccb_h.status & CAM_DEV_QFRZN) != 0)
2263                         cam_release_devq(ccb.ccb_h.path,
2264                                          /*relsim_flags*/0,
2265                                          /*reduction*/0,
2266                                          /*timeout*/0,
2267                                          /*getcount_only*/0);
2268
2269         }
2270 }
2271
2272 #else /* !_KERNEL */
2273
2274 /*
2275  * XXX This is only left out of the kernel build to silence warnings.  If,
2276  * for some reason this function is used in the kernel, the ifdefs should
2277  * be moved so it is included both in the kernel and userland.
2278  */
2279 void
2280 scsi_format_unit(struct ccb_scsiio *csio, u_int32_t retries,
2281                  void (*cbfcnp)(struct cam_periph *, union ccb *),
2282                  u_int8_t tag_action, u_int8_t byte2, u_int16_t ileave,
2283                  u_int8_t *data_ptr, u_int32_t dxfer_len, u_int8_t sense_len,
2284                  u_int32_t timeout)
2285 {
2286         struct scsi_format_unit *scsi_cmd;
2287
2288         scsi_cmd = (struct scsi_format_unit *)&csio->cdb_io.cdb_bytes;
2289         scsi_cmd->opcode = FORMAT_UNIT;
2290         scsi_cmd->byte2 = byte2;
2291         scsi_ulto2b(ileave, scsi_cmd->interleave);
2292
2293         cam_fill_csio(csio,
2294                       retries,
2295                       cbfcnp,
2296                       /*flags*/ (dxfer_len > 0) ? CAM_DIR_OUT : CAM_DIR_NONE,
2297                       tag_action,
2298                       data_ptr,
2299                       dxfer_len,
2300                       sense_len,
2301                       sizeof(*scsi_cmd),
2302                       timeout);
2303 }
2304
2305 #endif /* _KERNEL */