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 1.56 2008/05/18 20:30:20 pavalos Exp $
  30  */
  31
  32 #include <sys/param.h>
  33 #include <sys/bootmaj.h>
  34
  35 #ifdef _KERNEL
  36 #include <sys/systm.h>
  37 #include <sys/kernel.h>
  38 #include <sys/buf.h>
  39 #include <sys/sysctl.h>
  40 #include <sys/taskqueue.h>
  41 #include <sys/lock.h>
  42 #include <sys/conf.h>
  43 #include <sys/devicestat.h>
  44 #include <sys/disk.h>
  45 #include <sys/dtype.h>
  46 #include <sys/eventhandler.h>
  47 #include <sys/malloc.h>
  48 #include <sys/cons.h>
  49 #include <sys/proc.h>
  50 #include <sys/buf2.h>
  51 #include <sys/thread2.h>
  52 #endif /* _KERNEL */
  53
  54 #ifdef _KERNEL
  55 #include <vm/pmap.h>
  56 #endif
  57
  58 #ifndef _KERNEL
  59 #include <stdio.h>
  60 #include <string.h>
  61 #endif /* _KERNEL */
  62
  63 #include "../cam.h"
  64 #include "../cam_ccb.h"
  65 #include "../cam_extend.h"
  66 #include "../cam_periph.h"
  67 #include "../cam_xpt_periph.h"
  68 #include "../cam_sim.h"
  69
  70 #include "scsi_message.h"
  71
  72 #ifndef _KERNEL
  73 #include "scsi_da.h"
  74 #endif /* !_KERNEL */
  75
  76 #ifdef _KERNEL
  77 typedef enum {
  78         DA_STATE_PROBE,
  79         DA_STATE_PROBE2,
  80         DA_STATE_NORMAL
  81 } da_state;
  82
  83 typedef enum {
  84         DA_FLAG_PACK_INVALID    = 0x001,
  85         DA_FLAG_NEW_PACK        = 0x002,
  86         DA_FLAG_PACK_LOCKED     = 0x004,
  87         DA_FLAG_PACK_REMOVABLE  = 0x008,
  88         DA_FLAG_TAGGED_QUEUING  = 0x010,
  89         DA_FLAG_NEED_OTAG       = 0x020,
  90         DA_FLAG_WENT_IDLE       = 0x040,
  91         DA_FLAG_RETRY_UA        = 0x080,
  92         DA_FLAG_OPEN            = 0x100,
  93         DA_FLAG_SCTX_INIT       = 0x200
  94 } da_flags;
  95
  96 typedef enum {
  97         DA_Q_NONE               = 0x00,
  98         DA_Q_NO_SYNC_CACHE      = 0x01,
  99         DA_Q_NO_6_BYTE          = 0x02,
 100         DA_Q_NO_PREVENT         = 0x04
 101 } da_quirks;
 102
 103 typedef enum {
 104         DA_CCB_PROBE            = 0x01,
 105         DA_CCB_PROBE2           = 0x02,
 106         DA_CCB_BUFFER_IO        = 0x03,
 107         DA_CCB_WAITING          = 0x04,
 108         DA_CCB_DUMP             = 0x05,
 109         DA_CCB_TYPE_MASK        = 0x0F,
 110         DA_CCB_RETRY_UA         = 0x10
 111 } da_ccb_state;
 112
 113 /* Offsets into our private area for storing information */
 114 #define ccb_state       ppriv_field0
 115 #define ccb_bio         ppriv_ptr1
 116
 117 struct disk_params {
 118         u_int8_t  heads;
 119         u_int32_t cylinders;
 120         u_int8_t  secs_per_track;
 121         u_int32_t secsize;      /* Number of bytes/sector */
 122         u_int64_t sectors;      /* total number sectors */
 123 };
 124
 125 struct da_softc {
 126         struct   bio_queue_head bio_queue;
 127         struct   devstat device_stats;
 128         SLIST_ENTRY(da_softc) links;
 129         LIST_HEAD(, ccb_hdr) pending_ccbs;
 130         da_state state;
 131         da_flags flags;
 132         da_quirks quirks;
 133         int      minimum_cmd_size;
 134         int      ordered_tag_count;
 135         int      outstanding_cmds;
 136         struct   disk_params params;
 137         struct   disk disk;
 138         union    ccb saved_ccb;
 139         struct task             sysctl_task;
 140         struct sysctl_ctx_list  sysctl_ctx;
 141         struct sysctl_oid       *sysctl_tree;
 142         struct callout          sendordered_c;
 143 };
 144
 145 struct da_quirk_entry {
 146         struct scsi_inquiry_pattern inq_pat;
 147         da_quirks quirks;
 148 };
 149
 150 static const char quantum[] = "QUANTUM";
 151 static const char microp[] = "MICROP";
 152
 153 static struct da_quirk_entry da_quirk_table[] =
 154 {
 155         /* SPI, FC devices */
 156         {
 157                 /*
 158                  * Fujitsu M2513A MO drives.
 159                  * Tested devices: M2513A2 firmware versions 1200 & 1300.
 160                  * (dip switch selects whether T_DIRECT or T_OPTICAL device)
 161                  * Reported by: W.Scholten <whs@xs4all.nl>
 162                  */
 163                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "FUJITSU", "M2513A", "*"},
 164                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 165         },
 166         {
 167                 /* See above. */
 168                 {T_OPTICAL, SIP_MEDIA_REMOVABLE, "FUJITSU", "M2513A", "*"},
 169                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 170         },
 171         {
 172                 /*
 173                  * This particular Fujitsu drive doesn't like the
 174                  * synchronize cache command.
 175                  * Reported by: Tom Jackson <toj@gorilla.net>
 176                  */
 177                 {T_DIRECT, SIP_MEDIA_FIXED, "FUJITSU", "M2954*", "*"},
 178                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 179         },
 180         {
 181                 /*
 182                  * This drive doesn't like the synchronize cache command
 183                  * either.  Reported by: Matthew Jacob <mjacob@feral.com>
 184                  * in NetBSD PR kern/6027, August 24, 1998.
 185                  */
 186                 {T_DIRECT, SIP_MEDIA_FIXED, microp, "2217*", "*"},
 187                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 188         },
 189         {
 190                 /*
 191                  * This drive doesn't like the synchronize cache command
 192                  * either.  Reported by: Hellmuth Michaelis (hm@kts.org)
 193                  * (PR 8882).
 194                  */
 195                 {T_DIRECT, SIP_MEDIA_FIXED, microp, "2112*", "*"},
 196                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 197         },
 198         {
 199                 /*
 200                  * Doesn't like the synchronize cache command.
 201                  * Reported by: Blaz Zupan <blaz@gold.amis.net>
 202                  */
 203                 {T_DIRECT, SIP_MEDIA_FIXED, "NEC", "D3847*", "*"},
 204                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 205         },
 206         {
 207                 /*
 208                  * Doesn't like the synchronize cache command.
 209                  * Reported by: Blaz Zupan <blaz@gold.amis.net>
 210                  */
 211                 {T_DIRECT, SIP_MEDIA_FIXED, quantum, "MAVERICK 540S", "*"},
 212                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 213         },
 214         {
 215                 /*
 216                  * Doesn't like the synchronize cache command.
 217                  */
 218                 {T_DIRECT, SIP_MEDIA_FIXED, quantum, "LPS525S", "*"},
 219                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 220         },
 221         {
 222                 /*
 223                  * Doesn't like the synchronize cache command.
 224                  * Reported by: walter@pelissero.de
 225                  */
 226                 {T_DIRECT, SIP_MEDIA_FIXED, quantum, "LPS540S", "*"},
 227                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 228         },
 229         {
 230                 /*
 231                  * Doesn't work correctly with 6 byte reads/writes.
 232                  * Returns illegal request, and points to byte 9 of the
 233                  * 6-byte CDB.
 234                  * Reported by:  Adam McDougall <bsdx@spawnet.com>
 235                  */
 236                 {T_DIRECT, SIP_MEDIA_FIXED, quantum, "VIKING 4*", "*"},
 237                 /*quirks*/ DA_Q_NO_6_BYTE
 238         },
 239         {
 240                 /* See above. */
 241                 {T_DIRECT, SIP_MEDIA_FIXED, quantum, "VIKING 2*", "*"},
 242                 /*quirks*/ DA_Q_NO_6_BYTE
 243         },
 244         {
 245                 /*
 246                  * Doesn't like the synchronize cache command.
 247                  * Reported by: walter@pelissero.de
 248                  */
 249                 {T_DIRECT, SIP_MEDIA_FIXED, "CONNER", "CP3500*", "*"},
 250                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 251         },
 252         {
 253                 /*
 254                  * The CISS RAID controllers do not support SYNC_CACHE
 255                  */
 256                 {T_DIRECT, SIP_MEDIA_FIXED, "COMPAQ", "RAID*", "*"},
 257                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 258         },
 259         /* USB mass storage devices supported by umass(4) */
 260         {
 261                 /*
 262                  * EXATELECOM (Sigmatel) i-Bead 100/105 USB Flash MP3 Player
 263                  * PR: kern/51675
 264                  */
 265                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "EXATEL", "i-BEAD10*", "*"},
 266                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 267         },
 268         {
 269                 /*
 270                  * Power Quotient Int. (PQI) USB flash key
 271                  * PR: kern/53067
 272                  */
 273                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Generic*", "USB Flash Disk*",
 274                 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 275         },
 276         {
 277                 /*
 278                  * Creative Nomad MUVO mp3 player (USB)
 279                  * PR: kern/53094
 280                  */
 281                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "CREATIVE", "NOMAD_MUVO", "*"},
 282                 /*quirks*/ DA_Q_NO_SYNC_CACHE|DA_Q_NO_PREVENT
 283         },
 284         {
 285                 /*
 286                  * Jungsoft NEXDISK USB flash key
 287                  * PR: kern/54737
 288                  */
 289                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "JUNGSOFT", "NEXDISK*", "*"},
 290                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 291         },
 292         {
 293                 /*
 294                  * FreeDik USB Mini Data Drive
 295                  * PR: kern/54786
 296                  */
 297                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "FreeDik*", "Mini Data Drive",
 298                 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 299         },
 300         {
 301                 /*
 302                  * Sigmatel USB Flash MP3 Player
 303                  * PR: kern/57046
 304                  */
 305                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "SigmaTel", "MSCN", "*"},
 306                 /*quirks*/ DA_Q_NO_SYNC_CACHE|DA_Q_NO_PREVENT
 307         },
 308         {
 309                 /*
 310                  * Neuros USB Digital Audio Computer
 311                  * PR: kern/63645
 312                  */
 313                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "NEUROS", "dig. audio comp.",
 314                 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 315         },
 316         {
 317                 /*
 318                  * SEAGRAND NP-900 MP3 Player
 319                  * PR: kern/64563
 320                  */
 321                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "SEAGRAND", "NP-900*", "*"},
 322                 /*quirks*/ DA_Q_NO_SYNC_CACHE|DA_Q_NO_PREVENT
 323         },
 324         {
 325                 /*
 326                  * iRiver iFP MP3 player (with UMS Firmware)
 327                  * PR: kern/54881, i386/63941, kern/66124
 328                  */
 329                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "iRiver", "iFP*", "*"},
 330                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 331         },
 332         {
 333                 /*
 334                  * Frontier Labs NEX IA+ Digital Audio Player, rev 1.10/0.01
 335                  * PR: kern/70158
 336                  */
 337                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "FL" , "Nex*", "*"},
 338                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 339         },
 340         {
 341                 /*
 342                  * ZICPlay USB MP3 Player with FM
 343                  * PR: kern/75057
 344                  */
 345                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "ACTIONS*" , "USB DISK*", "*"},
 346                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 347         },
 348         {
 349                 /*
 350                  * TEAC USB floppy mechanisms
 351                  */
 352                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "TEAC" , "FD-05*", "*"},
 353                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 354         },
 355         {
 356                 /*
 357                  * Kingston DataTraveler II+ USB Pen-Drive.
 358                  * Reported by: Pawel Jakub Dawidek <pjd@FreeBSD.org>
 359                  */
 360                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Kingston" , "DataTraveler II+",
 361                 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 362         },
 363         {
 364                 /*
 365                  * Motorola E398 Mobile Phone (TransFlash memory card).
 366                  * Reported by: Wojciech A. Koszek <dunstan@FreeBSD.czest.pl>
 367                  * PR: usb/89889
 368                  */
 369                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Motorola" , "Motorola Phone",
 370                 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 371         },
 372         {
 373                 /*
 374                  * Qware BeatZkey! Pro
 375                  * PR: usb/79164
 376                  */
 377                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "GENERIC", "USB DISK DEVICE",
 378                 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 379         },
 380         {
 381                 /*
 382                  * Time DPA20B 1GB MP3 Player
 383                  * PR: usb/81846
 384                  */
 385                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "USB2.0*", "(FS) FLASH DISK*",
 386                 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 387         },
 388         {
 389                 /*
 390                  * Samsung USB key 128Mb
 391                  * PR: usb/90081
 392                  */
 393                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "USB-DISK", "FreeDik-FlashUsb",
 394                 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 395         },
 396         {
 397                 /*
 398                  * Kingston DataTraveler 2.0 USB Flash memory.
 399                  * PR: usb/89196
 400                  */
 401                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Kingston", "DataTraveler 2.0",
 402                 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 403         },
 404         {
 405                 /*
 406                  * Creative MUVO Slim mp3 player (USB)
 407                  * PR: usb/86131
 408                  */
 409                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "CREATIVE", "MuVo Slim",
 410                 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE|DA_Q_NO_PREVENT
 411                 },
 412         {
 413                 /*
 414                  * United MP5512 Portable MP3 Player (2-in-1 USB DISK/MP3)
 415                  * PR: usb/80487
 416                  */
 417                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Generic*", "MUSIC DISK",
 418                 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 419         },
 420         {
 421                 /*
 422                  * SanDisk Micro Cruzer 128MB
 423                  * PR: usb/75970
 424                  */
 425                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "SanDisk" , "Micro Cruzer",
 426                 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 427         },
 428         {
 429                 /*
 430                  * TOSHIBA TransMemory USB sticks
 431                  * PR: kern/94660
 432                  */
 433                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "TOSHIBA", "TransMemory",
 434                 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 435         },
 436         {
 437                 /*
 438                  * PNY USB Flash keys
 439                  * PR: usb/75578, usb/72344, usb/65436
 440                  */
 441                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "*" , "USB DISK*",
 442                 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 443         },
 444         {
 445                 /*
 446                  * Genesys 6-in-1 Card Reader
 447                  * PR: usb/94647
 448                  */
 449                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Generic*", "STORAGE DEVICE*",
 450                 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 451         },
 452         {
 453                 /*
 454                  * Rekam Digital CAMERA
 455                  * PR: usb/98713
 456                  */
 457                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "CAMERA*", "4MP-9J6*",
 458                 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 459         },
 460         {
 461                 /*
 462                  * iRiver H10 MP3 player
 463                  * PR: usb/102547
 464                  */
 465                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "iriver", "H10*",
 466                 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 467         },
 468         {
 469                 /*
 470                  * iRiver U10 MP3 player
 471                  * PR: usb/92306
 472                  */
 473                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "iriver", "U10*",
 474                 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 475         },
 476         {
 477                 /*
 478                  * X-Micro Flash Disk
 479                  * PR: usb/96901
 480                  */
 481                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "X-Micro", "Flash Disk",
 482                 "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 483         },
 484         {
 485                 /*
 486                  * EasyMP3 EM732X USB 2.0 Flash MP3 Player
 487                  * PR: usb/96546
 488                  */
 489                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "EM732X", "MP3 Player*",
 490                 "1.00"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 491         },
 492         {
 493                 /*
 494                  * Denver MP3 player
 495                  * PR: usb/107101
 496                  */
 497                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "DENVER", "MP3 PLAYER",
 498                  "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 499         },
 500         {
 501                 /*
 502                  * Philips USB Key Audio KEY013
 503                  * PR: usb/68412
 504                  */
 505                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "PHILIPS", "Key*", "*"},
 506                 /*quirks*/ DA_Q_NO_SYNC_CACHE | DA_Q_NO_PREVENT
 507         },
 508         {
 509                 /*
 510                  * JNC MP3 Player
 511                  * PR: usb/94439
 512                  */
 513                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "JNC*" , "MP3 Player*",
 514                  "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 515         },
 516         {
 517                 /*
 518                  * SAMSUNG MP0402H
 519                  * PR: usb/108427
 520                  */
 521                 {T_DIRECT, SIP_MEDIA_FIXED, "SAMSUNG", "MP0402H", "*"},
 522                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 523         },
 524         {
 525                 /*
 526                  * I/O Magic USB flash - Giga Bank
 527                  * PR: usb/108810
 528                  */
 529                 {T_DIRECT, SIP_MEDIA_FIXED, "GS-Magic", "stor*", "*"},
 530                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 531         },
 532         {
 533                 /*
 534                  * JoyFly 128mb USB Flash Drive
 535                  * PR: 96133
 536                  */
 537                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "USB 2.0", "Flash Disk*",
 538                  "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 539         },
 540         {
 541                 /*
 542                  * ChipsBnk usb stick
 543                  * PR: 103702
 544                  */
 545                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "ChipsBnk", "USB*",
 546                  "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 547         },
 548         {
 549                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Netac", "OnlyDisk*",
 550                 "2000"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 551         },
 552         {
 553                 /*
 554                  * USB 2.0 (HS) Flash Disk MP3 player
 555                  */
 556                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "USB 2.0", "(HS) Flash Disk", "*"},
 557                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 558         },
 559 };
 560
 561 static  d_open_t        daopen;
 562 static  d_close_t       daclose;
 563 static  d_strategy_t    dastrategy;
 564 static  d_dump_t        dadump;
 565 static  periph_init_t   dainit;
 566 static  void            daasync(void *callback_arg, u_int32_t code,
 567                                 struct cam_path *path, void *arg);
 568 static  int             dacmdsizesysctl(SYSCTL_HANDLER_ARGS);
 569 static  periph_ctor_t   daregister;
 570 static  periph_dtor_t   dacleanup;
 571 static  periph_start_t  dastart;
 572 static  periph_oninv_t  daoninvalidate;
 573 static  void            dadone(struct cam_periph *periph,
 574                                union ccb *done_ccb);
 575 static  int             daerror(union ccb *ccb, u_int32_t cam_flags,
 576                                 u_int32_t sense_flags);
 577 static void             daprevent(struct cam_periph *periph, int action);
 578 static int              dagetcapacity(struct cam_periph *periph);
 579 static void             dasetgeom(struct cam_periph *periph, uint32_t block_len,
 580                                   uint64_t maxsector);
 581
 582 static timeout_t        dasendorderedtag;
 583 static void             dashutdown(void *arg, int howto);
 584
 585 #ifndef DA_DEFAULT_TIMEOUT
 586 #define DA_DEFAULT_TIMEOUT 60   /* Timeout in seconds */
 587 #endif
 588
 589 #ifndef DA_DEFAULT_RETRY
 590 #define DA_DEFAULT_RETRY        4
 591 #endif
 592
 593 #ifndef DA_DEFAULT_SEND_ORDERED
 594 #define DA_DEFAULT_SEND_ORDERED 1
 595 #endif
 596
 597 static int da_retry_count = DA_DEFAULT_RETRY;
 598 static int da_default_timeout = DA_DEFAULT_TIMEOUT;
 599 static int da_send_ordered = DA_DEFAULT_SEND_ORDERED;
 600 static struct callout dasendorderedtag_ch;
 601
 602 SYSCTL_NODE(_kern_cam, OID_AUTO, da, CTLFLAG_RD, 0,
 603             "CAM Direct Access Disk driver");
 604 SYSCTL_INT(_kern_cam_da, OID_AUTO, retry_count, CTLFLAG_RW,
 605            &da_retry_count, 0, "Normal I/O retry count");
 606 TUNABLE_INT("kern.cam.da.retry_count", &da_retry_count);
 607 SYSCTL_INT(_kern_cam_da, OID_AUTO, default_timeout, CTLFLAG_RW,
 608            &da_default_timeout, 0, "Normal I/O timeout (in seconds)");
 609 TUNABLE_INT("kern.cam.da.default_timeout", &da_default_timeout);
 610 SYSCTL_INT(_kern_cam_da, OID_AUTO, da_send_ordered, CTLFLAG_RW,
 611            &da_send_ordered, 0, "Send Ordered Tags");
 612 TUNABLE_INT("kern.cam.da.da_send_ordered", &da_send_ordered);
 613
 614 /*
 615  * DA_ORDEREDTAG_INTERVAL determines how often, relative
 616  * to the default timeout, we check to see whether an ordered
 617  * tagged transaction is appropriate to prevent simple tag
 618  * starvation.  Since we'd like to ensure that there is at least
 619  * 1/2 of the timeout length left for a starved transaction to
 620  * complete after we've sent an ordered tag, we must poll at least
 621  * four times in every timeout period.  This takes care of the worst
 622  * case where a starved transaction starts during an interval that
 623  * meets the requirement "don't send an ordered tag" test so it takes
 624  * us two intervals to determine that a tag must be sent.
 625  */
 626 #ifndef DA_ORDEREDTAG_INTERVAL
 627 #define DA_ORDEREDTAG_INTERVAL 4
 628 #endif
 629
 630 static struct periph_driver dadriver =
 631 {
 632         dainit, "da",
 633         TAILQ_HEAD_INITIALIZER(dadriver.units), /* generation */ 0
 634 };
 635
 636 PERIPHDRIVER_DECLARE(da, dadriver);
 637
 638 static struct dev_ops da_ops = {
 639         { "da", DA_CDEV_MAJOR, D_DISK },
 640         .d_open =       daopen,
 641         .d_close =      daclose,
 642         .d_read =       physread,
 643         .d_write =      physwrite,
 644         .d_strategy =   dastrategy,
 645         .d_dump =       dadump
 646 };
 647
 648 static struct extend_array *daperiphs;
 649
 650 MALLOC_DEFINE(M_SCSIDA, "scsi_da", "scsi_da buffers");
 651
 652 static int
 653 daopen(struct dev_open_args *ap)
 654 {
 655         cdev_t dev = ap->a_head.a_dev;
 656         struct cam_periph *periph;
 657         struct da_softc *softc;
 658         struct disk_info info;
 659         int unit;
 660         int error;
 661
 662         unit = dkunit(dev);
 663         periph = cam_extend_get(daperiphs, unit);
 664         if (periph == NULL) {
 665                 return (ENXIO);
 666         }
 667
 668         if (cam_periph_acquire(periph) != CAM_REQ_CMP) {
 669                 return(ENXIO);
 670         }
 671
 672         cam_periph_lock(periph);
 673         if ((error = cam_periph_hold(periph, PCATCH)) != 0) {
 674                 cam_periph_unlock(periph);
 675                 cam_periph_release(periph);
 676                 return (error);
 677         }
 678
 679         unit = periph->unit_number;
 680         softc = (struct da_softc *)periph->softc;
 681         softc->flags |= DA_FLAG_OPEN;
 682
 683         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE,
 684             ("daopen: dev=%s (unit %d)\n", devtoname(dev),
 685              unit));
 686
 687         if ((softc->flags & DA_FLAG_PACK_INVALID) != 0) {
 688                 /* Invalidate our pack information. */
 689                 disk_invalidate(&softc->disk);
 690                 softc->flags &= ~DA_FLAG_PACK_INVALID;
 691         }
 692
 693         error = dagetcapacity(periph);
 694
 695 #if 0
 696         /* Do a read capacity */
 697         {
 698                 struct scsi_read_capacity_data *rcap;
 699                 union  ccb *ccb;
 700
 701                 rcap = kmalloc(sizeof(*rcap), M_SCSIDA, M_INTWAIT | M_ZERO);
 702
 703                 ccb = cam_periph_getccb(periph, /*priority*/1);
 704                 scsi_read_capacity(&ccb->csio,
 705                                    /*retries*/1,
 706                                    /*cbfncp*/dadone,
 707                                    MSG_SIMPLE_Q_TAG,
 708                                    rcap,
 709                                    SSD_FULL_SIZE,
 710                                    /*timeout*/60000);
 711                 ccb->ccb_h.ccb_bio = NULL;
 712
 713                 error = cam_periph_runccb(ccb, daerror, /*cam_flags*/0,
 714                                           /*sense_flags*/SF_RETRY_UA |
 715                                                          SF_RETRY_SELTO,
 716                                           &softc->device_stats);
 717
 718                 xpt_release_ccb(ccb);
 719
 720                 if (error == 0) {
 721                         dasetgeom(periph, rcap);
 722                 }
 723
 724                 kfree(rcap, M_SCSIDA);
 725         }
 726 #endif
 727
 728         if (error == 0) {
 729                 struct ccb_getdev cgd;
 730
 731                 /* Build disk information structure */
 732                 bzero(&info, sizeof(info));
 733                 info.d_type = DTYPE_SCSI;
 734
 735                 /*
 736                  * Grab the inquiry data to get the vendor and product names.
 737                  * Put them in the typename and packname for the label.
 738                  */
 739                 xpt_setup_ccb(&cgd.ccb_h, periph->path, /*priority*/ 1);
 740                 cgd.ccb_h.func_code = XPT_GDEV_TYPE;
 741                 xpt_action((union ccb *)&cgd);
 742
 743 #if 0
 744                 strncpy(label->d_typename, cgd.inq_data.vendor,
 745                         min(SID_VENDOR_SIZE, sizeof(label->d_typename)));
 746                 strncpy(label->d_packname, cgd.inq_data.product,
 747                         min(SID_PRODUCT_SIZE, sizeof(label->d_packname)));
 748 #endif
 749
 750                 /*
 751                  * Mandatory fields
 752                  */
 753                 info.d_media_blksize = softc->params.secsize;
 754                 info.d_media_blocks = softc->params.sectors;
 755                 info.d_media_size = 0;
 756
 757                 /*
 758                  * Optional fields
 759                  */
 760                 info.d_secpertrack = softc->params.secs_per_track;
 761                 info.d_nheads = softc->params.heads;
 762                 info.d_ncylinders = softc->params.cylinders;
 763                 info.d_secpercyl = softc->params.heads *
 764                                    softc->params.secs_per_track;
 765                 disk_setdiskinfo(&softc->disk, &info);
 766
 767                 /*
 768                  * Check to see whether or not the blocksize is set yet.
 769                  * If it isn't, set it and then clear the blocksize
 770                  * unavailable flag for the device statistics.
 771                  */
 772                 if ((softc->device_stats.flags & DEVSTAT_BS_UNAVAILABLE) != 0){
 773                         softc->device_stats.block_size = softc->params.secsize;
 774                         softc->device_stats.flags &= ~DEVSTAT_BS_UNAVAILABLE;
 775                 }
 776         }
 777
 778         if (error == 0) {
 779                 if ((softc->flags & DA_FLAG_PACK_REMOVABLE) != 0 &&
 780                     (softc->quirks & DA_Q_NO_PREVENT) == 0)
 781                         daprevent(periph, PR_PREVENT);
 782         } else {
 783                 softc->flags &= ~DA_FLAG_OPEN;
 784                 cam_periph_release(periph);
 785         }
 786         cam_periph_unhold(periph);
 787         cam_periph_unlock(periph);
 788         return (error);
 789 }
 790
 791 static int
 792 daclose(struct dev_close_args *ap)
 793 {
 794         cdev_t dev = ap->a_head.a_dev;
 795         struct  cam_periph *periph;
 796         struct  da_softc *softc;
 797         int     unit;
 798         int     error;
 799
 800         unit = dkunit(dev);
 801         periph = cam_extend_get(daperiphs, unit);
 802         if (periph == NULL)
 803                 return (ENXIO);
 804
 805         cam_periph_lock(periph);
 806         if ((error = cam_periph_hold(periph, 0)) != 0) {
 807                 cam_periph_unlock(periph);
 808                 cam_periph_release(periph);
 809                 return (error);
 810         }
 811
 812         softc = (struct da_softc *)periph->softc;
 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(periph->path, "Synchronize cache "
 846                                     "failed, status == 0x%x, scsi status == "
 847                                     "0x%x\n", ccb->csio.ccb_h.status,
 848                                     ccb->csio.scsi_status);
 849                         }
 850                 }
 851
 852                 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
 853                         cam_release_devq(ccb->ccb_h.path,
 854                                          /*relsim_flags*/0,
 855                                          /*reduction*/0,
 856                                          /*timeout*/0,
 857                                          /*getcount_only*/0);
 858
 859                 xpt_release_ccb(ccb);
 860
 861         }
 862
 863         if ((softc->flags & DA_FLAG_PACK_REMOVABLE) != 0) {
 864                 if ((softc->quirks & DA_Q_NO_PREVENT) == 0)
 865                         daprevent(periph, PR_ALLOW);
 866                 /*
 867                  * If we've got removeable media, mark the blocksize as
 868                  * unavailable, since it could change when new media is
 869                  * inserted.
 870                  */
 871                 softc->device_stats.flags |= DEVSTAT_BS_UNAVAILABLE;
 872         }
 873
 874         /*
 875          * Don't compound any ref counting software bugs with more.
 876          */
 877         if (softc->flags & DA_FLAG_OPEN) {
 878                 softc->flags &= ~DA_FLAG_OPEN;
 879                 cam_periph_release(periph);
 880         } else {
 881                 xpt_print(periph->path,
 882                           "daclose() called on an already closed device!\n");
 883         }
 884         cam_periph_unhold(periph);
 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
 914         cam_periph_lock(periph);
 915
 916 #if 0
 917         /*
 918          * check it's not too big a transfer for our adapter
 919          */
 920         scsi_minphys(bp, &sd_switch);
 921 #endif
 922
 923         /*
 924          * Mask interrupts so that the pack cannot be invalidated until
 925          * after we are in the queue.  Otherwise, we might not properly
 926          * clean up one of the buffers.
 927          */
 928
 929         /*
 930          * If the device has been made invalid, error out
 931          */
 932         if ((softc->flags & DA_FLAG_PACK_INVALID)) {
 933                 cam_periph_unlock(periph);
 934                 bp->b_error = ENXIO;
 935                 goto bad;
 936         }
 937
 938         /*
 939          * Place it in the queue of disk activities for this disk
 940          */
 941         bioqdisksort(&softc->bio_queue, bio);
 942
 943         /*
 944          * Schedule ourselves for performing the work.
 945          */
 946         xpt_schedule(periph, /* XXX priority */1);
 947         cam_periph_unlock(periph);
 948
 949         return(0);
 950 bad:
 951         bp->b_flags |= B_ERROR;
 952
 953         /*
 954          * Correctly set the buf to indicate a completed xfer
 955          */
 956         bp->b_resid = bp->b_bcount;
 957         biodone(bio);
 958         return(0);
 959 }
 960
 961 static int
 962 dadump(struct dev_dump_args *ap)
 963 {
 964         cdev_t dev = ap->a_head.a_dev;
 965         struct      cam_periph *periph;
 966         struct      da_softc *softc;
 967         u_int       unit;
 968         long        blkcnt;
 969         vm_paddr_t  addr;
 970         struct      ccb_scsiio csio;
 971         int         dumppages = MAXDUMPPGS;
 972         int         i;
 973
 974         /* toss any characters present prior to dump */
 975         while (cncheckc() != -1)
 976                 ;
 977
 978         unit = dkunit(dev);
 979         periph = cam_extend_get(daperiphs, unit);
 980         if (periph == NULL) {
 981                 return (ENXIO);
 982         }
 983         softc = (struct da_softc *)periph->softc;
 984
 985         cam_periph_lock(periph);
 986         if ((softc->flags & DA_FLAG_PACK_INVALID) != 0) {
 987                 cam_periph_unlock(periph);
 988                 return (ENXIO);
 989         }
 990
 991         addr = 0;       /* starting address */
 992         blkcnt = howmany(PAGE_SIZE, ap->a_secsize);
 993
 994         while (ap->a_count > 0) {
 995                 caddr_t va = NULL;
 996
 997                 if ((ap->a_count / blkcnt) < dumppages)
 998                         dumppages = ap->a_count / blkcnt;
 999
1000                 for (i = 0; i < dumppages; ++i) {
1001                         vm_paddr_t a = addr + (i * PAGE_SIZE);
1002                         if (is_physical_memory(a))
1003                                 va = pmap_kenter_temporary(trunc_page(a), i);
1004                         else
1005                                 va = pmap_kenter_temporary(trunc_page(0), i);
1006                 }
1007
1008                 periph->flags |= CAM_PERIPH_POLLED;
1009                 xpt_setup_ccb(&csio.ccb_h, periph->path, /*priority*/1);
1010                 csio.ccb_h.ccb_state = DA_CCB_DUMP;
1011                 scsi_read_write(&csio,
1012                                 /*retries*/1,
1013                                 dadone,
1014                                 MSG_ORDERED_Q_TAG,
1015                                 /*read*/FALSE,
1016                                 /*byte2*/0,
1017                                 /*minimum_cmd_size*/ softc->minimum_cmd_size,
1018                                 ap->a_blkno,
1019                                 blkcnt * dumppages,
1020                                 /*data_ptr*/(u_int8_t *) va,
1021                                 /*dxfer_len*/blkcnt * ap->a_secsize * dumppages,
1022                                 /*sense_len*/SSD_FULL_SIZE,
1023                                 DA_DEFAULT_TIMEOUT * 1000);
1024                 xpt_polled_action((union ccb *)&csio);
1025
1026                 if ((csio.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1027                         kprintf("Aborting dump due to I/O error.\n");
1028                         if ((csio.ccb_h.status & CAM_STATUS_MASK) ==
1029                              CAM_SCSI_STATUS_ERROR)
1030                                 scsi_sense_print(&csio);
1031                         else
1032                                 kprintf("status == 0x%x, scsi status == 0x%x\n",
1033                                        csio.ccb_h.status, csio.scsi_status);
1034                         periph->flags |= CAM_PERIPH_POLLED;
1035                         return(EIO);
1036                 }
1037
1038                 if (dumpstatus(addr, (off_t)ap->a_count * softc->params.secsize) < 0)
1039                         return (EINTR);
1040
1041                 /* update block count */
1042                 ap->a_count -= blkcnt * dumppages;
1043                 ap->a_blkno += blkcnt * dumppages;
1044                 addr += PAGE_SIZE * dumppages;
1045         }
1046
1047         /*
1048          * Sync the disk cache contents to the physical media.
1049          */
1050         if ((softc->quirks & DA_Q_NO_SYNC_CACHE) == 0) {
1051
1052                 xpt_setup_ccb(&csio.ccb_h, periph->path, /*priority*/1);
1053                 csio.ccb_h.ccb_state = DA_CCB_DUMP;
1054                 scsi_synchronize_cache(&csio,
1055                                        /*retries*/1,
1056                                        /*cbfcnp*/dadone,
1057                                        MSG_SIMPLE_Q_TAG,
1058                                        /*begin_lba*/0,/* Cover the whole disk */
1059                                        /*lb_count*/0,
1060                                        SSD_FULL_SIZE,
1061                                        5 * 60 * 1000);
1062                 xpt_polled_action((union ccb *)&csio);
1063
1064                 if ((csio.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1065                         if ((csio.ccb_h.status & CAM_STATUS_MASK) ==
1066                              CAM_SCSI_STATUS_ERROR) {
1067                                 int asc, ascq;
1068                                 int sense_key, error_code;
1069
1070                                 scsi_extract_sense(&csio.sense_data,
1071                                                    &error_code,
1072                                                    &sense_key,
1073                                                    &asc, &ascq);
1074                                 if (sense_key != SSD_KEY_ILLEGAL_REQUEST)
1075                                         scsi_sense_print(&csio);
1076                         } else {
1077                                 xpt_print(periph->path, "Synchronize cache "
1078                                     "failed, status == 0x%x, scsi status == "
1079                                     "0x%x\n", csio.ccb_h.status,
1080                                     csio.scsi_status);
1081                         }
1082                 }
1083         }
1084         periph->flags &= ~CAM_PERIPH_POLLED;
1085         cam_periph_unlock(periph);
1086         return (0);
1087 }
1088
1089 static void
1090 dainit(void)
1091 {
1092         cam_status status;
1093
1094         /*
1095          * Create our extend array for storing the devices we attach to.
1096          */
1097         daperiphs = cam_extend_new();
1098         if (daperiphs == NULL) {
1099                 kprintf("da: Failed to alloc extend array!\n");
1100                 return;
1101         }
1102
1103         callout_init(&dasendorderedtag_ch);
1104
1105         /*
1106          * Install a global async callback.  This callback will
1107          * receive async callbacks like "new device found".
1108          */
1109         status = xpt_register_async(AC_FOUND_DEVICE, daasync, NULL, NULL);
1110
1111         if (status != CAM_REQ_CMP) {
1112                 kprintf("da: Failed to attach master async callback "
1113                        "due to status 0x%x!\n", status);
1114         } else if (da_send_ordered) {
1115
1116                 /* Register our shutdown event handler */
1117                 if ((EVENTHANDLER_REGISTER(shutdown_post_sync, dashutdown,
1118                                            NULL, SHUTDOWN_PRI_DEFAULT)) == NULL)
1119                     kprintf("dainit: shutdown event registration failed!\n");
1120         }
1121 }
1122
1123 static void
1124 daoninvalidate(struct cam_periph *periph)
1125 {
1126         struct da_softc *softc;
1127         struct bio *q_bio;
1128         struct buf *q_bp;
1129
1130         softc = (struct da_softc *)periph->softc;
1131
1132         /*
1133          * De-register any async callbacks.
1134          */
1135         xpt_register_async(0, daasync, periph, periph->path);
1136
1137         softc->flags |= DA_FLAG_PACK_INVALID;
1138
1139         /*
1140          * Return all queued I/O with ENXIO.
1141          * XXX Handle any transactions queued to the card
1142          *     with XPT_ABORT_CCB.
1143          */
1144         while ((q_bio = bioq_first(&softc->bio_queue)) != NULL){
1145                 bioq_remove(&softc->bio_queue, q_bio);
1146                 q_bp = q_bio->bio_buf;
1147                 q_bp->b_resid = q_bp->b_bcount;
1148                 q_bp->b_error = ENXIO;
1149                 q_bp->b_flags |= B_ERROR;
1150                 biodone(q_bio);
1151         }
1152         xpt_print(periph->path, "lost device\n");
1153 }
1154
1155 static void
1156 dacleanup(struct cam_periph *periph)
1157 {
1158         struct da_softc *softc;
1159
1160         softc = (struct da_softc *)periph->softc;
1161
1162         devstat_remove_entry(&softc->device_stats);
1163         cam_extend_release(daperiphs, periph->unit_number);
1164         xpt_print(periph->path, "removing device entry\n");
1165         /*
1166          * If we can't free the sysctl tree, oh well...
1167          */
1168         if ((softc->flags & DA_FLAG_SCTX_INIT) != 0
1169             && sysctl_ctx_free(&softc->sysctl_ctx) != 0) {
1170                 xpt_print(periph->path, "can't remove sysctl context\n");
1171         }
1172         if (softc->disk.d_rawdev) {
1173                 cam_periph_unlock(periph);
1174                 disk_destroy(&softc->disk);
1175                 cam_periph_lock(periph);
1176         }
1177
1178         callout_stop(&softc->sendordered_c);
1179         kfree(softc, M_DEVBUF);
1180 }
1181
1182 static void
1183 daasync(void *callback_arg, u_int32_t code,
1184         struct cam_path *path, void *arg)
1185 {
1186         struct cam_periph *periph;
1187
1188         periph = (struct cam_periph *)callback_arg;
1189         switch (code) {
1190         case AC_FOUND_DEVICE:
1191         {
1192                 struct ccb_getdev *cgd;
1193                 struct cam_sim *sim;
1194                 cam_status status;
1195
1196                 cgd = (struct ccb_getdev *)arg;
1197                 if (cgd == NULL)
1198                         break;
1199
1200                 if (SID_TYPE(&cgd->inq_data) != T_DIRECT
1201                     && SID_TYPE(&cgd->inq_data) != T_RBC
1202                     && SID_TYPE(&cgd->inq_data) != T_OPTICAL)
1203                         break;
1204
1205                 /*
1206                  * Allocate a peripheral instance for
1207                  * this device and start the probe
1208                  * process.
1209                  */
1210                 sim = xpt_path_sim(cgd->ccb_h.path);
1211                 status = cam_periph_alloc(daregister, daoninvalidate,
1212                                           dacleanup, dastart,
1213                                           "da", CAM_PERIPH_BIO,
1214                                           cgd->ccb_h.path, daasync,
1215                                           AC_FOUND_DEVICE, cgd);
1216
1217                 if (status != CAM_REQ_CMP
1218                  && status != CAM_REQ_INPROG)
1219                         kprintf("daasync: Unable to attach to new device "
1220                                 "due to status 0x%x\n", status);
1221                 break;
1222         }
1223         case AC_SENT_BDR:
1224         case AC_BUS_RESET:
1225         {
1226                 struct da_softc *softc;
1227                 struct ccb_hdr *ccbh;
1228
1229                 softc = (struct da_softc *)periph->softc;
1230                 /*
1231                  * Don't fail on the expected unit attention
1232                  * that will occur.
1233                  */
1234                 softc->flags |= DA_FLAG_RETRY_UA;
1235                 LIST_FOREACH(ccbh, &softc->pending_ccbs, periph_links.le)
1236                         ccbh->ccb_state |= DA_CCB_RETRY_UA;
1237                 /* FALLTHROUGH*/
1238         }
1239         default:
1240                 cam_periph_async(periph, code, path, arg);
1241                 break;
1242         }
1243 }
1244
1245 static void
1246 dasysctlinit(void *context, int pending)
1247 {
1248         struct cam_periph *periph;
1249         struct da_softc *softc;
1250         char tmpstr[80], tmpstr2[80];
1251
1252         periph = (struct cam_periph *)context;
1253         if (cam_periph_acquire(periph) != CAM_REQ_CMP)
1254                 return;
1255
1256         softc = (struct da_softc *)periph->softc;
1257         ksnprintf(tmpstr, sizeof(tmpstr), "CAM DA unit %d", periph->unit_number);
1258         ksnprintf(tmpstr2, sizeof(tmpstr2), "%d", periph->unit_number);
1259
1260         sysctl_ctx_init(&softc->sysctl_ctx);
1261         softc->flags |= DA_FLAG_SCTX_INIT;
1262         softc->sysctl_tree = SYSCTL_ADD_NODE(&softc->sysctl_ctx,
1263                 SYSCTL_STATIC_CHILDREN(_kern_cam_da), OID_AUTO, tmpstr2,
1264                 CTLFLAG_RD, 0, tmpstr);
1265         if (softc->sysctl_tree == NULL) {
1266                 kprintf("dasysctlinit: unable to allocate sysctl tree\n");
1267                 cam_periph_release(periph);
1268                 return;
1269         }
1270
1271         /*
1272          * Now register the sysctl handler, so the user can the value on
1273          * the fly.
1274          */
1275         SYSCTL_ADD_PROC(&softc->sysctl_ctx,SYSCTL_CHILDREN(softc->sysctl_tree),
1276                 OID_AUTO, "minimum_cmd_size", CTLTYPE_INT | CTLFLAG_RW,
1277                 &softc->minimum_cmd_size, 0, dacmdsizesysctl, "I",
1278                 "Minimum CDB size");
1279
1280         cam_periph_release(periph);
1281 }
1282
1283 static int
1284 dacmdsizesysctl(SYSCTL_HANDLER_ARGS)
1285 {
1286         int error, value;
1287
1288         value = *(int *)arg1;
1289
1290         error = sysctl_handle_int(oidp, &value, 0, req);
1291
1292         if ((error != 0)
1293          || (req->newptr == NULL))
1294                 return (error);
1295
1296         /*
1297          * Acceptable values here are 6, 10 or 12, or 16.
1298          */
1299         if (value < 6)
1300                 value = 6;
1301         else if ((value > 6)
1302               && (value <= 10))
1303                 value = 10;
1304         else if ((value > 10)
1305               && (value <= 12))
1306                 value = 12;
1307         else if (value > 12)
1308                 value = 16;
1309
1310         *(int *)arg1 = value;
1311
1312         return (0);
1313 }
1314
1315 static cam_status
1316 daregister(struct cam_periph *periph, void *arg)
1317 {
1318         struct da_softc *softc;
1319         struct ccb_pathinq cpi;
1320         struct ccb_getdev *cgd;
1321         char tmpstr[80];
1322         caddr_t match;
1323
1324         cgd = (struct ccb_getdev *)arg;
1325         if (periph == NULL) {
1326                 kprintf("daregister: periph was NULL!!\n");
1327                 return(CAM_REQ_CMP_ERR);
1328         }
1329
1330         if (cgd == NULL) {
1331                 kprintf("daregister: no getdev CCB, can't register device\n");
1332                 return(CAM_REQ_CMP_ERR);
1333         }
1334
1335         softc = kmalloc(sizeof(*softc), M_DEVBUF, M_INTWAIT | M_ZERO);
1336         LIST_INIT(&softc->pending_ccbs);
1337         softc->state = DA_STATE_PROBE;
1338         bioq_init(&softc->bio_queue);
1339         if (SID_IS_REMOVABLE(&cgd->inq_data))
1340                 softc->flags |= DA_FLAG_PACK_REMOVABLE;
1341         if ((cgd->inq_data.flags & SID_CmdQue) != 0)
1342                 softc->flags |= DA_FLAG_TAGGED_QUEUING;
1343
1344         periph->softc = softc;
1345
1346         cam_extend_set(daperiphs, periph->unit_number, periph);
1347
1348         /*
1349          * See if this device has any quirks.
1350          */
1351         match = cam_quirkmatch((caddr_t)&cgd->inq_data,
1352                                (caddr_t)da_quirk_table,
1353                                sizeof(da_quirk_table)/sizeof(*da_quirk_table),
1354                                sizeof(*da_quirk_table), scsi_inquiry_match);
1355
1356         if (match != NULL)
1357                 softc->quirks = ((struct da_quirk_entry *)match)->quirks;
1358         else
1359                 softc->quirks = DA_Q_NONE;
1360
1361         TASK_INIT(&softc->sysctl_task, 0, dasysctlinit, periph);
1362
1363         /* Check if the SIM does not want 6 byte commands */
1364         xpt_setup_ccb(&cpi.ccb_h, periph->path, /*priority*/1);
1365         cpi.ccb_h.func_code = XPT_PATH_INQ;
1366         xpt_action((union ccb *)&cpi);
1367         if (cpi.ccb_h.status == CAM_REQ_CMP && (cpi.hba_misc & PIM_NO_6_BYTE))
1368                 softc->quirks |= DA_Q_NO_6_BYTE;
1369
1370         /*
1371          * RBC devices don't have to support READ(6), only READ(10).
1372          */
1373         if (softc->quirks & DA_Q_NO_6_BYTE || SID_TYPE(&cgd->inq_data) == T_RBC)
1374                 softc->minimum_cmd_size = 10;
1375         else
1376                 softc->minimum_cmd_size = 6;
1377
1378         /*
1379          * Load the user's default, if any.
1380          */
1381         ksnprintf(tmpstr, sizeof(tmpstr), "kern.cam.da.%d.minimum_cmd_size",
1382                  periph->unit_number);
1383         TUNABLE_INT_FETCH(tmpstr, &softc->minimum_cmd_size);
1384
1385         /*
1386          * 6, 10, 12, and 16 are the currently permissible values.
1387          */
1388         if (softc->minimum_cmd_size < 6)
1389                 softc->minimum_cmd_size = 6;
1390         else if ((softc->minimum_cmd_size > 6)
1391               && (softc->minimum_cmd_size <= 10))
1392                 softc->minimum_cmd_size = 10;
1393         else if ((softc->minimum_cmd_size > 10)
1394               && (softc->minimum_cmd_size <= 12))
1395                 softc->minimum_cmd_size = 12;
1396         else if (softc->minimum_cmd_size > 12)
1397                 softc->minimum_cmd_size = 16;
1398
1399         /*
1400          * The DA driver supports a blocksize, but
1401          * we don't know the blocksize until we do
1402          * a read capacity.  So, set a flag to
1403          * indicate that the blocksize is
1404          * unavailable right now.  We'll clear the
1405          * flag as soon as we've done a read capacity.
1406          */
1407         devstat_add_entry(&softc->device_stats, "da",
1408                           periph->unit_number, 0,
1409                           DEVSTAT_BS_UNAVAILABLE,
1410                           SID_TYPE(&cgd->inq_data) | DEVSTAT_TYPE_IF_SCSI,
1411                           DEVSTAT_PRIORITY_DISK);
1412
1413         /*
1414          * Register this media as a disk
1415          */
1416
1417         CAM_SIM_UNLOCK(periph->sim);
1418         disk_create(periph->unit_number, &softc->disk, &da_ops);
1419         softc->disk.d_rawdev->si_iosize_max = MAXPHYS;
1420         CAM_SIM_LOCK(periph->sim);
1421
1422         /*
1423          * Add async callbacks for bus reset and
1424          * bus device reset calls.  I don't bother
1425          * checking if this fails as, in most cases,
1426          * the system will function just fine without
1427          * them and the only alternative would be to
1428          * not attach the device on failure.
1429          */
1430         xpt_register_async(AC_SENT_BDR | AC_BUS_RESET | AC_LOST_DEVICE,
1431                            daasync, periph, periph->path);
1432
1433         /*
1434          * Take an exclusive refcount on the periph while dastart is called
1435          * to finish the probe.  The reference will be dropped in dadone at
1436          * the end of probe.
1437          */
1438         cam_periph_hold(periph, 0);
1439         xpt_schedule(periph, /*priority*/5);
1440
1441         /*
1442          * Schedule a periodic event to occasionally send an
1443          * ordered tag to a device.
1444          */
1445         callout_init(&softc->sendordered_c);
1446         callout_reset(&softc->sendordered_c,
1447             (DA_DEFAULT_TIMEOUT * hz) / DA_ORDEREDTAG_INTERVAL,
1448             dasendorderedtag, softc);
1449
1450         return(CAM_REQ_CMP);
1451 }
1452
1453 static void
1454 dastart(struct cam_periph *periph, union ccb *start_ccb)
1455 {
1456         struct da_softc *softc;
1457
1458         softc = (struct da_softc *)periph->softc;
1459
1460         switch (softc->state) {
1461         case DA_STATE_NORMAL:
1462         {
1463                 /* Pull a buffer from the queue and get going on it */
1464                 struct bio *bio;
1465                 struct buf *bp;
1466
1467                 /*
1468                  * See if there is a buf with work for us to do..
1469                  */
1470                 bio = bioq_first(&softc->bio_queue);
1471                 if (periph->immediate_priority <= periph->pinfo.priority) {
1472                         CAM_DEBUG_PRINT(CAM_DEBUG_SUBTRACE,
1473                                         ("queuing for immediate ccb\n"));
1474                         start_ccb->ccb_h.ccb_state = DA_CCB_WAITING;
1475                         SLIST_INSERT_HEAD(&periph->ccb_list, &start_ccb->ccb_h,
1476                                           periph_links.sle);
1477                         periph->immediate_priority = CAM_PRIORITY_NONE;
1478                         wakeup(&periph->ccb_list);
1479                 } else if (bio == NULL) {
1480                         xpt_release_ccb(start_ccb);
1481                 } else {
1482                         u_int8_t tag_code;
1483
1484                         bioq_remove(&softc->bio_queue, bio);
1485                         bp = bio->bio_buf;
1486
1487                         devstat_start_transaction(&softc->device_stats);
1488
1489                         if ((bp->b_flags & B_ORDERED) != 0
1490                          || (softc->flags & DA_FLAG_NEED_OTAG) != 0) {
1491                                 softc->flags &= ~DA_FLAG_NEED_OTAG;
1492                                 softc->ordered_tag_count++;
1493                                 tag_code = MSG_ORDERED_Q_TAG;
1494                         } else {
1495                                 tag_code = MSG_SIMPLE_Q_TAG;
1496                         }
1497
1498                         KKASSERT(bio->bio_offset % softc->params.secsize == 0);
1499
1500                         scsi_read_write(&start_ccb->csio,
1501                                         /*retries*/da_retry_count,
1502                                         dadone,
1503                                         tag_code,
1504                                         (bp->b_cmd == BUF_CMD_READ),
1505                                         /*byte2*/0,
1506                                         softc->minimum_cmd_size,
1507                                         bio->bio_offset / softc->params.secsize,
1508                                         bp->b_bcount / softc->params.secsize,
1509                                         bp->b_data,
1510                                         bp->b_bcount,
1511                                         /*sense_len*/SSD_FULL_SIZE,
1512                                         da_default_timeout * 1000);
1513                         start_ccb->ccb_h.ccb_state = DA_CCB_BUFFER_IO;
1514
1515                         /*
1516                          * Block out any asyncronous callbacks
1517                          * while we touch the pending ccb list.
1518                          */
1519                         LIST_INSERT_HEAD(&softc->pending_ccbs,
1520                                          &start_ccb->ccb_h, periph_links.le);
1521
1522                         softc->outstanding_cmds++;
1523                         /* We expect a unit attention from this device */
1524                         if ((softc->flags & DA_FLAG_RETRY_UA) != 0) {
1525                                 start_ccb->ccb_h.ccb_state |= DA_CCB_RETRY_UA;
1526                                 softc->flags &= ~DA_FLAG_RETRY_UA;
1527                         }
1528
1529                         start_ccb->ccb_h.ccb_bio = bio;
1530                         bio = bioq_first(&softc->bio_queue);
1531
1532                         xpt_action(start_ccb);
1533                 }
1534
1535                 if (bio != NULL) {
1536                         /* Have more work to do, so ensure we stay scheduled */
1537                         xpt_schedule(periph, /* XXX priority */1);
1538                 }
1539                 break;
1540         }
1541         case DA_STATE_PROBE:
1542         {
1543                 struct ccb_scsiio *csio;
1544                 struct scsi_read_capacity_data *rcap;
1545
1546                 rcap = kmalloc(sizeof(*rcap), M_SCSIDA, M_INTWAIT | M_ZERO);
1547                 csio = &start_ccb->csio;
1548                 scsi_read_capacity(csio,
1549                                    /*retries*/4,
1550                                    dadone,
1551                                    MSG_SIMPLE_Q_TAG,
1552                                    rcap,
1553                                    SSD_FULL_SIZE,
1554                                    /*timeout*/5000);
1555                 start_ccb->ccb_h.ccb_bio = NULL;
1556                 start_ccb->ccb_h.ccb_state = DA_CCB_PROBE;
1557                 xpt_action(start_ccb);
1558                 break;
1559         }
1560         case DA_STATE_PROBE2:
1561         {
1562                 struct ccb_scsiio *csio;
1563                 struct scsi_read_capacity_data_long *rcaplong;
1564
1565                 rcaplong = (struct scsi_read_capacity_data_long *)
1566                 kmalloc(sizeof(*rcaplong), M_SCSIDA, M_INTWAIT | M_ZERO);
1567                 if (rcaplong == NULL) {
1568                         kprintf("dastart: Couldn't allocate read_capacity\n");
1569                         /* da_free_periph??? */
1570                         break;
1571                 }
1572                 csio = &start_ccb->csio;
1573                 scsi_read_capacity_16(csio,
1574                                     /*retries*/ 4,
1575                                     /*cbfcnp*/ dadone,
1576                                     /*tag_action*/ MSG_SIMPLE_Q_TAG,
1577                                     /*lba*/ 0,
1578                                     /*reladr*/ 0,
1579                                     /*pmi*/ 0,
1580                                     rcaplong,
1581                                     /*sense_len*/ SSD_FULL_SIZE,
1582                                     /*timeout*/ 60000);
1583                 start_ccb->ccb_h.ccb_bio = NULL;
1584                 start_ccb->ccb_h.ccb_state = DA_CCB_PROBE2;
1585                 xpt_action(start_ccb);
1586                 break;
1587         }
1588         }
1589 }
1590
1591 static int
1592 cmd6workaround(union ccb *ccb)
1593 {
1594         struct scsi_rw_6 cmd6;
1595         struct scsi_rw_10 *cmd10;
1596         struct da_softc *softc;
1597         u_int8_t *cdb;
1598         int frozen;
1599
1600         cdb = ccb->csio.cdb_io.cdb_bytes;
1601
1602         /* Translation only possible if CDB is an array and cmd is R/W6 */
1603         if ((ccb->ccb_h.flags & CAM_CDB_POINTER) != 0 ||
1604             (*cdb != READ_6 && *cdb != WRITE_6))
1605                 return 0;
1606
1607         xpt_print(ccb->ccb_h.path, "READ(6)/WRITE(6) not supported, "
1608             "increasing minimum_cmd_size to 10.\n");
1609         softc = (struct da_softc *)xpt_path_periph(ccb->ccb_h.path)->softc;
1610         softc->minimum_cmd_size = 10;
1611
1612         bcopy(cdb, &cmd6, sizeof(struct scsi_rw_6));
1613         cmd10 = (struct scsi_rw_10 *)cdb;
1614         cmd10->opcode = (cmd6.opcode == READ_6) ? READ_10 : WRITE_10;
1615         cmd10->byte2 = 0;
1616         scsi_ulto4b(scsi_3btoul(cmd6.addr), cmd10->addr);
1617         cmd10->reserved = 0;
1618         scsi_ulto2b(cmd6.length, cmd10->length);
1619         cmd10->control = cmd6.control;
1620         ccb->csio.cdb_len = sizeof(*cmd10);
1621
1622         /* Requeue request, unfreezing queue if necessary */
1623         frozen = (ccb->ccb_h.status & CAM_DEV_QFRZN) != 0;
1624         ccb->ccb_h.status = CAM_REQUEUE_REQ;
1625         xpt_action(ccb);
1626         if (frozen) {
1627                 cam_release_devq(ccb->ccb_h.path,
1628                                  /*relsim_flags*/0,
1629                                  /*reduction*/0,
1630                                  /*timeout*/0,
1631                                  /*getcount_only*/0);
1632         }
1633         return (ERESTART);
1634 }
1635
1636 static void
1637 dadone(struct cam_periph *periph, union ccb *done_ccb)
1638 {
1639         struct da_softc *softc;
1640         struct ccb_scsiio *csio;
1641
1642         softc = (struct da_softc *)periph->softc;
1643         csio = &done_ccb->csio;
1644         switch (csio->ccb_h.ccb_state & DA_CCB_TYPE_MASK) {
1645         case DA_CCB_BUFFER_IO:
1646         {
1647                 struct buf *bp;
1648                 struct bio *bio;
1649
1650                 bio = (struct bio *)done_ccb->ccb_h.ccb_bio;
1651                 bp = bio->bio_buf;
1652                 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1653                         int error;
1654                         int sf;
1655
1656                         if ((csio->ccb_h.ccb_state & DA_CCB_RETRY_UA) != 0)
1657                                 sf = SF_RETRY_UA;
1658                         else
1659                                 sf = 0;
1660
1661                         error = daerror(done_ccb, CAM_RETRY_SELTO, sf);
1662                         if (error == ERESTART) {
1663                                 /*
1664                                  * A retry was scheuled, so
1665                                  * just return.
1666                                  */
1667                                 return;
1668                         }
1669                         if (error != 0) {
1670                                 struct bio *q_bio;
1671                                 struct buf *q_bp;
1672
1673                                 if (error == ENXIO) {
1674                                         /*
1675                                          * Catastrophic error.  Mark our pack as
1676                                          * invalid.
1677                                          */
1678                                         /*
1679                                          * XXX See if this is really a media
1680                                          * XXX change first?
1681                                          */
1682                                         xpt_print(periph->path,
1683                                             "Invalidating pack\n");
1684                                         softc->flags |= DA_FLAG_PACK_INVALID;
1685                                 }
1686
1687                                 /*
1688                                  * return all queued I/O with EIO, so that
1689                                  * the client can retry these I/Os in the
1690                                  * proper order should it attempt to recover.
1691                                  */
1692                                 while ((q_bio = bioq_first(&softc->bio_queue))
1693                                         != NULL) {
1694                                         bioq_remove(&softc->bio_queue, q_bio);
1695                                         q_bp = q_bio->bio_buf;
1696                                         q_bp->b_resid = q_bp->b_bcount;
1697                                         q_bp->b_error = EIO;
1698                                         q_bp->b_flags |= B_ERROR;
1699                                         biodone(q_bio);
1700                                 }
1701                                 bp->b_error = error;
1702                                 bp->b_resid = bp->b_bcount;
1703                                 bp->b_flags |= B_ERROR;
1704                         } else {
1705                                 bp->b_resid = csio->resid;
1706                                 bp->b_error = 0;
1707                                 if (bp->b_resid != 0)
1708                                         bp->b_flags |= B_ERROR;
1709                         }
1710                         if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
1711                                 cam_release_devq(done_ccb->ccb_h.path,
1712                                                  /*relsim_flags*/0,
1713                                                  /*reduction*/0,
1714                                                  /*timeout*/0,
1715                                                  /*getcount_only*/0);
1716                 } else {
1717                         if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
1718                                 panic("REQ_CMP with QFRZN");
1719                         bp->b_resid = csio->resid;
1720                         if (csio->resid > 0)
1721                                 bp->b_flags |= B_ERROR;
1722                 }
1723
1724                 /*
1725                  * Block out any asyncronous callbacks
1726                  * while we touch the pending ccb list.
1727                  */
1728                 LIST_REMOVE(&done_ccb->ccb_h, periph_links.le);
1729                 softc->outstanding_cmds--;
1730                 if (softc->outstanding_cmds == 0)
1731                         softc->flags |= DA_FLAG_WENT_IDLE;
1732
1733                 devstat_end_transaction_buf(&softc->device_stats, bp);
1734                 biodone(bio);
1735                 break;
1736         }
1737         case DA_CCB_PROBE:
1738         case DA_CCB_PROBE2:
1739         {
1740                 struct     scsi_read_capacity_data *rdcap;
1741                 struct     scsi_read_capacity_data_long *rcaplong;
1742                 char       announce_buf[80];
1743
1744                 rdcap = NULL;
1745                 rcaplong = NULL;
1746                 if (softc->state == DA_STATE_PROBE)
1747                         rdcap =(struct scsi_read_capacity_data *)csio->data_ptr;
1748                 else
1749                         rcaplong = (struct scsi_read_capacity_data_long *)
1750                                     csio->data_ptr;
1751
1752                 if ((csio->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP) {
1753                         struct disk_params *dp;
1754                         uint32_t block_size;
1755                         uint64_t maxsector;
1756
1757                         if (softc->state == DA_STATE_PROBE) {
1758                                 block_size = scsi_4btoul(rdcap->length);
1759                                 maxsector = scsi_4btoul(rdcap->addr);
1760
1761                                 /*
1762                                  * According to SBC-2, if the standard 10
1763                                  * byte READ CAPACITY command returns 2^32,
1764                                  * we should issue the 16 byte version of
1765                                  * the command, since the device in question
1766                                  * has more sectors than can be represented
1767                                  * with the short version of the command.
1768                                  */
1769                                 if (maxsector == 0xffffffff) {
1770                                         softc->state = DA_STATE_PROBE2;
1771                                         kfree(rdcap, M_SCSIDA);
1772                                         xpt_release_ccb(done_ccb);
1773                                         xpt_schedule(periph, /*priority*/5);
1774                                         return;
1775                                 }
1776                         } else {
1777                                 block_size = scsi_4btoul(rcaplong->length);
1778                                 maxsector = scsi_8btou64(rcaplong->addr);
1779                         }
1780                         dasetgeom(periph, block_size, maxsector);
1781                         dp = &softc->params;
1782                         ksnprintf(announce_buf, sizeof(announce_buf),
1783                                 "%juMB (%ju %u byte sectors: %dH %dS/T %dC)",
1784                                 (uintmax_t) (((uintmax_t)dp->secsize *
1785                                 dp->sectors) / (1024*1024)),
1786                                 (uintmax_t)dp->sectors,
1787                                 dp->secsize, dp->heads, dp->secs_per_track,
1788                                 dp->cylinders);
1789                 } else {
1790                         int     error;
1791
1792                         announce_buf[0] = '\0';
1793
1794                         /*
1795                          * Retry any UNIT ATTENTION type errors.  They
1796                          * are expected at boot.
1797                          */
1798                         error = daerror(done_ccb, CAM_RETRY_SELTO,
1799                                         SF_RETRY_UA|SF_NO_PRINT);
1800                         if (error == ERESTART) {
1801                                 /*
1802                                  * A retry was scheuled, so
1803                                  * just return.
1804                                  */
1805                                 return;
1806                         } else if (error != 0) {
1807                                 struct scsi_sense_data *sense;
1808                                 int asc, ascq;
1809                                 int sense_key, error_code;
1810                                 int have_sense;
1811                                 cam_status status;
1812                                 struct ccb_getdev cgd;
1813
1814                                 /* Don't wedge this device's queue */
1815                                 status = done_ccb->ccb_h.status;
1816                                 if ((status & CAM_DEV_QFRZN) != 0)
1817                                         cam_release_devq(done_ccb->ccb_h.path,
1818                                                          /*relsim_flags*/0,
1819                                                          /*reduction*/0,
1820                                                          /*timeout*/0,
1821                                                          /*getcount_only*/0);
1822
1823
1824                                 xpt_setup_ccb(&cgd.ccb_h,
1825                                               done_ccb->ccb_h.path,
1826                                               /* priority */ 1);
1827                                 cgd.ccb_h.func_code = XPT_GDEV_TYPE;
1828                                 xpt_action((union ccb *)&cgd);
1829
1830                                 if (((csio->ccb_h.flags & CAM_SENSE_PHYS) != 0)
1831                                  || ((csio->ccb_h.flags & CAM_SENSE_PTR) != 0)
1832                                  || ((status & CAM_AUTOSNS_VALID) == 0))
1833                                         have_sense = FALSE;
1834                                 else
1835                                         have_sense = TRUE;
1836
1837                                 if (have_sense) {
1838                                         sense = &csio->sense_data;
1839                                         scsi_extract_sense(sense, &error_code,
1840                                                            &sense_key,
1841                                                            &asc, &ascq);
1842                                 }
1843                                 /*
1844                                  * Attach to anything that claims to be a
1845                                  * direct access or optical disk device,
1846                                  * as long as it doesn't return a "Logical
1847                                  * unit not supported" (0x25) error.
1848                                  */
1849                                 if ((have_sense) && (asc != 0x25)
1850                                  && (error_code == SSD_CURRENT_ERROR)) {
1851                                         const char *sense_key_desc;
1852                                         const char *asc_desc;
1853
1854                                         scsi_sense_desc(sense_key, asc, ascq,
1855                                                         &cgd.inq_data,
1856                                                         &sense_key_desc,
1857                                                         &asc_desc);
1858                                         ksnprintf(announce_buf,
1859                                             sizeof(announce_buf),
1860                                                 "Attempt to query device "
1861                                                 "size failed: %s, %s",
1862                                                 sense_key_desc,
1863                                                 asc_desc);
1864                                 } else {
1865                                         if (have_sense)
1866                                                 scsi_sense_print(
1867                                                         &done_ccb->csio);
1868                                         else {
1869                                                 xpt_print(periph->path,
1870                                                     "got CAM status %#x\n",
1871                                                     done_ccb->ccb_h.status);
1872                                         }
1873
1874                                         xpt_print(periph->path, "fatal error, "
1875                                             "failed to attach to device\n");
1876
1877                                         /*
1878                                          * Free up resources.
1879                                          */
1880                                         cam_periph_invalidate(periph);
1881                                 }
1882                         }
1883                 }
1884                 kfree(csio->data_ptr, M_SCSIDA);
1885                 if (announce_buf[0] != '\0') {
1886                         xpt_announce_periph(periph, announce_buf);
1887                         /*
1888                          * Create our sysctl variables, now that we know
1889                          * we have successfully attached.
1890                          */
1891                         taskqueue_enqueue(taskqueue_thread[mycpuid],
1892                             &softc->sysctl_task);
1893                 }
1894                 softc->state = DA_STATE_NORMAL;
1895                 /*
1896                  * Since our peripheral may be invalidated by an error
1897                  * above or an external event, we must release our CCB
1898                  * before releasing the probe lock on the peripheral.
1899                  * The peripheral will only go away once the last lock
1900                  * is removed, and we need it around for the CCB release
1901                  * operation.
1902                  */
1903                 xpt_release_ccb(done_ccb);
1904                 cam_periph_unhold(periph);
1905                 return;
1906         }
1907         case DA_CCB_WAITING:
1908         {
1909                 /* Caller will release the CCB */
1910                 wakeup(&done_ccb->ccb_h.cbfcnp);
1911                 return;
1912         }
1913         case DA_CCB_DUMP:
1914                 /* No-op.  We're polling */
1915                 return;
1916         default:
1917                 break;
1918         }
1919         xpt_release_ccb(done_ccb);
1920 }
1921
1922 static int
1923 daerror(union ccb *ccb, u_int32_t cam_flags, u_int32_t sense_flags)
1924 {
1925         struct da_softc   *softc;
1926         struct cam_periph *periph;
1927         int error;
1928
1929         periph = xpt_path_periph(ccb->ccb_h.path);
1930         softc = (struct da_softc *)periph->softc;
1931
1932         /*
1933          * Automatically detect devices that do not support
1934          * READ(6)/WRITE(6) and upgrade to using 10 byte cdbs.
1935          */
1936         error = 0;
1937         if ((ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_INVALID) {
1938                 error = cmd6workaround(ccb);
1939         } else if (((ccb->ccb_h.status & CAM_STATUS_MASK) ==
1940                    CAM_SCSI_STATUS_ERROR)
1941          && (ccb->ccb_h.status & CAM_AUTOSNS_VALID)
1942          && (ccb->csio.scsi_status == SCSI_STATUS_CHECK_COND)
1943          && ((ccb->ccb_h.flags & CAM_SENSE_PHYS) == 0)
1944          && ((ccb->ccb_h.flags & CAM_SENSE_PTR) == 0)) {
1945                 int sense_key, error_code, asc, ascq;
1946
1947                 scsi_extract_sense(&ccb->csio.sense_data,
1948                                    &error_code, &sense_key, &asc, &ascq);
1949                 if (sense_key == SSD_KEY_ILLEGAL_REQUEST)
1950                         error = cmd6workaround(ccb);
1951         }
1952         if (error == ERESTART)
1953                 return (ERESTART);
1954
1955         /*
1956          * XXX
1957          * Until we have a better way of doing pack validation,
1958          * don't treat UAs as errors.
1959          */
1960         sense_flags |= SF_RETRY_UA;
1961         return(cam_periph_error(ccb, cam_flags, sense_flags,
1962                                 &softc->saved_ccb));
1963 }
1964
1965 static void
1966 daprevent(struct cam_periph *periph, int action)
1967 {
1968         struct  da_softc *softc;
1969         union   ccb *ccb;
1970         int     error;
1971
1972         softc = (struct da_softc *)periph->softc;
1973
1974         if (((action == PR_ALLOW)
1975           && (softc->flags & DA_FLAG_PACK_LOCKED) == 0)
1976          || ((action == PR_PREVENT)
1977           && (softc->flags & DA_FLAG_PACK_LOCKED) != 0)) {
1978                 return;
1979         }
1980
1981         ccb = cam_periph_getccb(periph, /*priority*/1);
1982
1983         scsi_prevent(&ccb->csio,
1984                      /*retries*/1,
1985                      /*cbcfp*/dadone,
1986                      MSG_SIMPLE_Q_TAG,
1987                      action,
1988                      SSD_FULL_SIZE,
1989                      5000);
1990
1991         error = cam_periph_runccb(ccb, /*error_routine*/NULL, CAM_RETRY_SELTO,
1992                                   SF_RETRY_UA, &softc->device_stats);
1993
1994         if (error == 0) {
1995                 if (action == PR_ALLOW)
1996                         softc->flags &= ~DA_FLAG_PACK_LOCKED;
1997                 else
1998                         softc->flags |= DA_FLAG_PACK_LOCKED;
1999         }
2000
2001         xpt_release_ccb(ccb);
2002 }
2003
2004 static int
2005 dagetcapacity(struct cam_periph *periph)
2006 {
2007         struct da_softc *softc;
2008         union ccb *ccb;
2009         struct scsi_read_capacity_data *rcap;
2010         struct scsi_read_capacity_data_long *rcaplong;
2011         uint32_t block_len;
2012         uint64_t maxsector;
2013         int error;
2014
2015         softc = (struct da_softc *)periph->softc;
2016         block_len = 0;
2017         maxsector = 0;
2018         error = 0;
2019
2020         /* Do a read capacity */
2021         rcap = (struct scsi_read_capacity_data *)kmalloc(sizeof(*rcaplong),
2022                                                          M_SCSIDA, M_INTWAIT);
2023
2024         ccb = cam_periph_getccb(periph, /*priority*/1);
2025         scsi_read_capacity(&ccb->csio,
2026                            /*retries*/4,
2027                            /*cbfncp*/dadone,
2028                            MSG_SIMPLE_Q_TAG,
2029                            rcap,
2030                            SSD_FULL_SIZE,
2031                            /*timeout*/60000);
2032         ccb->ccb_h.ccb_bio = NULL;
2033
2034         error = cam_periph_runccb(ccb, daerror,
2035                                   /*cam_flags*/CAM_RETRY_SELTO,
2036                                   /*sense_flags*/SF_RETRY_UA,
2037                                   &softc->device_stats);
2038
2039         if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
2040                 cam_release_devq(ccb->ccb_h.path,
2041                                  /*relsim_flags*/0,
2042                                  /*reduction*/0,
2043                                  /*timeout*/0,
2044                                  /*getcount_only*/0);
2045
2046         if (error == 0) {
2047                 block_len = scsi_4btoul(rcap->length);
2048                 maxsector = scsi_4btoul(rcap->addr);
2049
2050                 if (maxsector != 0xffffffff)
2051                         goto done;
2052         } else
2053                 goto done;
2054
2055         rcaplong = (struct scsi_read_capacity_data_long *)rcap;
2056
2057         scsi_read_capacity_16(&ccb->csio,
2058                               /*retries*/ 4,
2059                               /*cbfcnp*/ dadone,
2060                               /*tag_action*/ MSG_SIMPLE_Q_TAG,
2061                               /*lba*/ 0,
2062                               /*reladr*/ 0,
2063                               /*pmi*/ 0,
2064                               rcaplong,
2065                               /*sense_len*/ SSD_FULL_SIZE,
2066                               /*timeout*/ 60000);
2067         ccb->ccb_h.ccb_bio = NULL;
2068
2069         error = cam_periph_runccb(ccb, daerror,
2070                                   /*cam_flags*/CAM_RETRY_SELTO,
2071                                   /*sense_flags*/SF_RETRY_UA,
2072                                   &softc->device_stats);
2073
2074         if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
2075                 cam_release_devq(ccb->ccb_h.path,
2076                                  /*relsim_flags*/0,
2077                                  /*reduction*/0,
2078                                  /*timeout*/0,
2079                                  /*getcount_only*/0);
2080
2081         if (error == 0) {
2082                 block_len = scsi_4btoul(rcaplong->length);
2083                 maxsector = scsi_8btou64(rcaplong->addr);
2084         }
2085
2086 done:
2087
2088         if (error == 0)
2089                 dasetgeom(periph, block_len, maxsector);
2090
2091         xpt_release_ccb(ccb);
2092
2093         kfree(rcap, M_SCSIDA);
2094
2095         return (error);
2096 }
2097
2098 static void
2099 dasetgeom(struct cam_periph *periph, uint32_t block_len, uint64_t maxsector)
2100 {
2101         struct ccb_calc_geometry ccg;
2102         struct da_softc *softc;
2103         struct disk_params *dp;
2104
2105         softc = (struct da_softc *)periph->softc;
2106
2107         dp = &softc->params;
2108         dp->secsize = block_len;
2109         dp->sectors = maxsector + 1;
2110         /*
2111          * Have the controller provide us with a geometry
2112          * for this disk.  The only time the geometry
2113          * matters is when we boot and the controller
2114          * is the only one knowledgeable enough to come
2115          * up with something that will make this a bootable
2116          * device.
2117          */
2118         xpt_setup_ccb(&ccg.ccb_h, periph->path, /*priority*/1);
2119         ccg.ccb_h.func_code = XPT_CALC_GEOMETRY;
2120         ccg.block_size = dp->secsize;
2121         ccg.volume_size = dp->sectors;
2122         ccg.heads = 0;
2123         ccg.secs_per_track = 0;
2124         ccg.cylinders = 0;
2125         xpt_action((union ccb*)&ccg);
2126         if ((ccg.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
2127                 /*
2128                  * We don't know what went wrong here- but just pick
2129                  * a geometry so we don't have nasty things like divide
2130                  * by zero.
2131                  */
2132                 dp->heads = 255;
2133                 dp->secs_per_track = 255;
2134                 dp->cylinders = dp->sectors / (255 * 255);
2135                 if (dp->cylinders == 0) {
2136                         dp->cylinders = 1;
2137                 }
2138         } else {
2139                 dp->heads = ccg.heads;
2140                 dp->secs_per_track = ccg.secs_per_track;
2141                 dp->cylinders = ccg.cylinders;
2142         }
2143 }
2144
2145 static void
2146 dasendorderedtag(void *arg)
2147 {
2148         struct da_softc *softc = arg;
2149
2150         if (da_send_ordered) {
2151                 if ((softc->ordered_tag_count == 0)
2152                  && ((softc->flags & DA_FLAG_WENT_IDLE) == 0)) {
2153                         softc->flags |= DA_FLAG_NEED_OTAG;
2154                 }
2155                 if (softc->outstanding_cmds > 0)
2156                         softc->flags &= ~DA_FLAG_WENT_IDLE;
2157
2158                 softc->ordered_tag_count = 0;
2159         }
2160         /* Queue us up again */
2161         callout_reset(&softc->sendordered_c,
2162             (DA_DEFAULT_TIMEOUT * hz) / DA_ORDEREDTAG_INTERVAL,
2163             dasendorderedtag, softc);
2164 }
2165
2166 /*
2167  * Step through all DA peripheral drivers, and if the device is still open,
2168  * sync the disk cache to physical media.
2169  */
2170 static void
2171 dashutdown(void * arg, int howto)
2172 {
2173         struct cam_periph *periph;
2174         struct da_softc *softc;
2175
2176         TAILQ_FOREACH(periph, &dadriver.units, unit_links) {
2177                 union ccb ccb;
2178
2179                 cam_periph_lock(periph);
2180                 softc = (struct da_softc *)periph->softc;
2181
2182                 /*
2183                  * We only sync the cache if the drive is still open, and
2184                  * if the drive is capable of it..
2185                  */
2186                 if (((softc->flags & DA_FLAG_OPEN) == 0)
2187                  || (softc->quirks & DA_Q_NO_SYNC_CACHE)) {
2188                         cam_periph_unlock(periph);
2189                         continue;
2190                 }
2191
2192                 xpt_setup_ccb(&ccb.ccb_h, periph->path, /*priority*/1);
2193
2194                 ccb.ccb_h.ccb_state = DA_CCB_DUMP;
2195                 scsi_synchronize_cache(&ccb.csio,
2196                                        /*retries*/1,
2197                                        /*cbfcnp*/dadone,
2198                                        MSG_SIMPLE_Q_TAG,
2199                                        /*begin_lba*/0, /* whole disk */
2200                                        /*lb_count*/0,
2201                                        SSD_FULL_SIZE,
2202                                        60 * 60 * 1000);
2203
2204                 xpt_polled_action(&ccb);
2205
2206                 if ((ccb.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
2207                         if (((ccb.ccb_h.status & CAM_STATUS_MASK) ==
2208                              CAM_SCSI_STATUS_ERROR)
2209                          && (ccb.csio.scsi_status == SCSI_STATUS_CHECK_COND)){
2210                                 int error_code, sense_key, asc, ascq;
2211
2212                                 scsi_extract_sense(&ccb.csio.sense_data,
2213                                                    &error_code, &sense_key,
2214                                                    &asc, &ascq);
2215
2216                                 if (sense_key != SSD_KEY_ILLEGAL_REQUEST)
2217                                         scsi_sense_print(&ccb.csio);
2218                         } else {
2219                                 xpt_print(periph->path, "Synchronize "
2220                                     "cache failed, status == 0x%x, scsi status "
2221                                     "== 0x%x\n", ccb.ccb_h.status,
2222                                     ccb.csio.scsi_status);
2223                         }
2224                 }
2225
2226                 if ((ccb.ccb_h.status & CAM_DEV_QFRZN) != 0)
2227                         cam_release_devq(ccb.ccb_h.path,
2228                                          /*relsim_flags*/0,
2229                                          /*reduction*/0,
2230                                          /*timeout*/0,
2231                                          /*getcount_only*/0);
2232
2233                 cam_periph_unlock(periph);
2234         }
2235 }
2236
2237 #else /* !_KERNEL */
2238
2239 /*
2240  * XXX This is only left out of the kernel build to silence warnings.  If,
2241  * for some reason this function is used in the kernel, the ifdefs should
2242  * be moved so it is included both in the kernel and userland.
2243  */
2244 void
2245 scsi_format_unit(struct ccb_scsiio *csio, u_int32_t retries,
2246                  void (*cbfcnp)(struct cam_periph *, union ccb *),
2247                  u_int8_t tag_action, u_int8_t byte2, u_int16_t ileave,
2248                  u_int8_t *data_ptr, u_int32_t dxfer_len, u_int8_t sense_len,
2249                  u_int32_t timeout)
2250 {
2251         struct scsi_format_unit *scsi_cmd;
2252
2253         scsi_cmd = (struct scsi_format_unit *)&csio->cdb_io.cdb_bytes;
2254         scsi_cmd->opcode = FORMAT_UNIT;
2255         scsi_cmd->byte2 = byte2;
2256         scsi_ulto2b(ileave, scsi_cmd->interleave);
2257
2258         cam_fill_csio(csio,
2259                       retries,
2260                       cbfcnp,
2261                       /*flags*/ (dxfer_len > 0) ? CAM_DIR_OUT : CAM_DIR_NONE,
2262                       tag_action,
2263                       data_ptr,
2264                       dxfer_len,
2265                       sense_len,
2266                       sizeof(*scsi_cmd),
2267                       timeout);
2268 }
2269
2270 #endif /* _KERNEL */