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 1.57 2008/07/12 20:36:06 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                 /*
 550                  * Samsung YP-U3 mp3-player
 551                  * PR: 125398
 552                  */
 553                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Samsung", "YP-U3",
 554                  "*"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 555         },
 556         {
 557                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Netac", "OnlyDisk*",
 558                 "2000"}, /*quirks*/ DA_Q_NO_SYNC_CACHE
 559         },
 560         {
 561                 /*
 562                  * USB 2.0 (HS) Flash Disk MP3 player
 563                  */
 564                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "USB 2.0", "(HS) Flash Disk", "*"},
 565                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 566         },
 567 };
 568
 569 static  d_open_t        daopen;
 570 static  d_close_t       daclose;
 571 static  d_strategy_t    dastrategy;
 572 static  d_dump_t        dadump;
 573 static  periph_init_t   dainit;
 574 static  void            daasync(void *callback_arg, u_int32_t code,
 575                                 struct cam_path *path, void *arg);
 576 static  int             dacmdsizesysctl(SYSCTL_HANDLER_ARGS);
 577 static  periph_ctor_t   daregister;
 578 static  periph_dtor_t   dacleanup;
 579 static  periph_start_t  dastart;
 580 static  periph_oninv_t  daoninvalidate;
 581 static  void            dadone(struct cam_periph *periph,
 582                                union ccb *done_ccb);
 583 static  int             daerror(union ccb *ccb, u_int32_t cam_flags,
 584                                 u_int32_t sense_flags);
 585 static void             daprevent(struct cam_periph *periph, int action);
 586 static int              dagetcapacity(struct cam_periph *periph);
 587 static void             dasetgeom(struct cam_periph *periph, uint32_t block_len,
 588                                   uint64_t maxsector);
 589
 590 static timeout_t        dasendorderedtag;
 591 static void             dashutdown(void *arg, int howto);
 592
 593 #ifndef DA_DEFAULT_TIMEOUT
 594 #define DA_DEFAULT_TIMEOUT 60   /* Timeout in seconds */
 595 #endif
 596
 597 #ifndef DA_DEFAULT_RETRY
 598 #define DA_DEFAULT_RETRY        4
 599 #endif
 600
 601 #ifndef DA_DEFAULT_SEND_ORDERED
 602 #define DA_DEFAULT_SEND_ORDERED 1
 603 #endif
 604
 605 static int da_retry_count = DA_DEFAULT_RETRY;
 606 static int da_default_timeout = DA_DEFAULT_TIMEOUT;
 607 static int da_send_ordered = DA_DEFAULT_SEND_ORDERED;
 608 static struct callout dasendorderedtag_ch;
 609
 610 SYSCTL_NODE(_kern_cam, OID_AUTO, da, CTLFLAG_RD, 0,
 611             "CAM Direct Access Disk driver");
 612 SYSCTL_INT(_kern_cam_da, OID_AUTO, retry_count, CTLFLAG_RW,
 613            &da_retry_count, 0, "Normal I/O retry count");
 614 TUNABLE_INT("kern.cam.da.retry_count", &da_retry_count);
 615 SYSCTL_INT(_kern_cam_da, OID_AUTO, default_timeout, CTLFLAG_RW,
 616            &da_default_timeout, 0, "Normal I/O timeout (in seconds)");
 617 TUNABLE_INT("kern.cam.da.default_timeout", &da_default_timeout);
 618 SYSCTL_INT(_kern_cam_da, OID_AUTO, da_send_ordered, CTLFLAG_RW,
 619            &da_send_ordered, 0, "Send Ordered Tags");
 620 TUNABLE_INT("kern.cam.da.da_send_ordered", &da_send_ordered);
 621
 622 /*
 623  * DA_ORDEREDTAG_INTERVAL determines how often, relative
 624  * to the default timeout, we check to see whether an ordered
 625  * tagged transaction is appropriate to prevent simple tag
 626  * starvation.  Since we'd like to ensure that there is at least
 627  * 1/2 of the timeout length left for a starved transaction to
 628  * complete after we've sent an ordered tag, we must poll at least
 629  * four times in every timeout period.  This takes care of the worst
 630  * case where a starved transaction starts during an interval that
 631  * meets the requirement "don't send an ordered tag" test so it takes
 632  * us two intervals to determine that a tag must be sent.
 633  */
 634 #ifndef DA_ORDEREDTAG_INTERVAL
 635 #define DA_ORDEREDTAG_INTERVAL 4
 636 #endif
 637
 638 static struct periph_driver dadriver =
 639 {
 640         dainit, "da",
 641         TAILQ_HEAD_INITIALIZER(dadriver.units), /* generation */ 0
 642 };
 643
 644 PERIPHDRIVER_DECLARE(da, dadriver);
 645
 646 static struct dev_ops da_ops = {
 647         { "da", DA_CDEV_MAJOR, D_DISK },
 648         .d_open =       daopen,
 649         .d_close =      daclose,
 650         .d_read =       physread,
 651         .d_write =      physwrite,
 652         .d_strategy =   dastrategy,
 653         .d_dump =       dadump
 654 };
 655
 656 static struct extend_array *daperiphs;
 657
 658 MALLOC_DEFINE(M_SCSIDA, "scsi_da", "scsi_da buffers");
 659
 660 static int
 661 daopen(struct dev_open_args *ap)
 662 {
 663         cdev_t dev = ap->a_head.a_dev;
 664         struct cam_periph *periph;
 665         struct da_softc *softc;
 666         struct disk_info info;
 667         int unit;
 668         int error;
 669
 670         unit = dkunit(dev);
 671         periph = cam_extend_get(daperiphs, unit);
 672         if (periph == NULL) {
 673                 return (ENXIO);
 674         }
 675
 676         if (cam_periph_acquire(periph) != CAM_REQ_CMP) {
 677                 return(ENXIO);
 678         }
 679
 680         cam_periph_lock(periph);
 681         if ((error = cam_periph_hold(periph, PCATCH)) != 0) {
 682                 cam_periph_unlock(periph);
 683                 cam_periph_release(periph);
 684                 return (error);
 685         }
 686
 687         unit = periph->unit_number;
 688         softc = (struct da_softc *)periph->softc;
 689         softc->flags |= DA_FLAG_OPEN;
 690
 691         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE,
 692             ("daopen: dev=%s (unit %d)\n", devtoname(dev),
 693              unit));
 694
 695         if ((softc->flags & DA_FLAG_PACK_INVALID) != 0) {
 696                 /* Invalidate our pack information. */
 697                 disk_invalidate(&softc->disk);
 698                 softc->flags &= ~DA_FLAG_PACK_INVALID;
 699         }
 700
 701         error = dagetcapacity(periph);
 702
 703 #if 0
 704         /* Do a read capacity */
 705         {
 706                 struct scsi_read_capacity_data *rcap;
 707                 union  ccb *ccb;
 708
 709                 rcap = kmalloc(sizeof(*rcap), M_SCSIDA, M_INTWAIT | M_ZERO);
 710
 711                 ccb = cam_periph_getccb(periph, /*priority*/1);
 712                 scsi_read_capacity(&ccb->csio,
 713                                    /*retries*/1,
 714                                    /*cbfncp*/dadone,
 715                                    MSG_SIMPLE_Q_TAG,
 716                                    rcap,
 717                                    SSD_FULL_SIZE,
 718                                    /*timeout*/60000);
 719                 ccb->ccb_h.ccb_bio = NULL;
 720
 721                 error = cam_periph_runccb(ccb, daerror, /*cam_flags*/0,
 722                                           /*sense_flags*/SF_RETRY_UA |
 723                                                          SF_RETRY_SELTO,
 724                                           &softc->device_stats);
 725
 726                 xpt_release_ccb(ccb);
 727
 728                 if (error == 0) {
 729                         dasetgeom(periph, rcap);
 730                 }
 731
 732                 kfree(rcap, M_SCSIDA);
 733         }
 734 #endif
 735
 736         if (error == 0) {
 737                 struct ccb_getdev cgd;
 738
 739                 /* Build disk information structure */
 740                 bzero(&info, sizeof(info));
 741                 info.d_type = DTYPE_SCSI;
 742
 743                 /*
 744                  * Grab the inquiry data to get the vendor and product names.
 745                  * Put them in the typename and packname for the label.
 746                  */
 747                 xpt_setup_ccb(&cgd.ccb_h, periph->path, /*priority*/ 1);
 748                 cgd.ccb_h.func_code = XPT_GDEV_TYPE;
 749                 xpt_action((union ccb *)&cgd);
 750
 751 #if 0
 752                 strncpy(label->d_typename, cgd.inq_data.vendor,
 753                         min(SID_VENDOR_SIZE, sizeof(label->d_typename)));
 754                 strncpy(label->d_packname, cgd.inq_data.product,
 755                         min(SID_PRODUCT_SIZE, sizeof(label->d_packname)));
 756 #endif
 757
 758                 /*
 759                  * Mandatory fields
 760                  */
 761                 info.d_media_blksize = softc->params.secsize;
 762                 info.d_media_blocks = softc->params.sectors;
 763                 info.d_media_size = 0;
 764
 765                 /*
 766                  * Optional fields
 767                  */
 768                 info.d_secpertrack = softc->params.secs_per_track;
 769                 info.d_nheads = softc->params.heads;
 770                 info.d_ncylinders = softc->params.cylinders;
 771                 info.d_secpercyl = softc->params.heads *
 772                                    softc->params.secs_per_track;
 773                 disk_setdiskinfo(&softc->disk, &info);
 774
 775                 /*
 776                  * Check to see whether or not the blocksize is set yet.
 777                  * If it isn't, set it and then clear the blocksize
 778                  * unavailable flag for the device statistics.
 779                  */
 780                 if ((softc->device_stats.flags & DEVSTAT_BS_UNAVAILABLE) != 0){
 781                         softc->device_stats.block_size = softc->params.secsize;
 782                         softc->device_stats.flags &= ~DEVSTAT_BS_UNAVAILABLE;
 783                 }
 784         }
 785
 786         if (error == 0) {
 787                 if ((softc->flags & DA_FLAG_PACK_REMOVABLE) != 0 &&
 788                     (softc->quirks & DA_Q_NO_PREVENT) == 0)
 789                         daprevent(periph, PR_PREVENT);
 790         } else {
 791                 softc->flags &= ~DA_FLAG_OPEN;
 792                 cam_periph_release(periph);
 793         }
 794         cam_periph_unhold(periph);
 795         cam_periph_unlock(periph);
 796         return (error);
 797 }
 798
 799 static int
 800 daclose(struct dev_close_args *ap)
 801 {
 802         cdev_t dev = ap->a_head.a_dev;
 803         struct  cam_periph *periph;
 804         struct  da_softc *softc;
 805         int     unit;
 806         int     error;
 807
 808         unit = dkunit(dev);
 809         periph = cam_extend_get(daperiphs, unit);
 810         if (periph == NULL)
 811                 return (ENXIO);
 812
 813         cam_periph_lock(periph);
 814         if ((error = cam_periph_hold(periph, 0)) != 0) {
 815                 cam_periph_unlock(periph);
 816                 cam_periph_release(periph);
 817                 return (error);
 818         }
 819
 820         softc = (struct da_softc *)periph->softc;
 821
 822         if ((softc->quirks & DA_Q_NO_SYNC_CACHE) == 0) {
 823                 union   ccb *ccb;
 824
 825                 ccb = cam_periph_getccb(periph, /*priority*/1);
 826
 827                 scsi_synchronize_cache(&ccb->csio,
 828                                        /*retries*/1,
 829                                        /*cbfcnp*/dadone,
 830                                        MSG_SIMPLE_Q_TAG,
 831                                        /*begin_lba*/0,/* Cover the whole disk */
 832                                        /*lb_count*/0,
 833                                        SSD_FULL_SIZE,
 834                                        5 * 60 * 1000);
 835
 836                 cam_periph_runccb(ccb, /*error_routine*/NULL, /*cam_flags*/0,
 837                                   /*sense_flags*/SF_RETRY_UA,
 838                                   &softc->device_stats);
 839
 840                 if ((ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
 841                         if ((ccb->ccb_h.status & CAM_STATUS_MASK) ==
 842                              CAM_SCSI_STATUS_ERROR) {
 843                                 int asc, ascq;
 844                                 int sense_key, error_code;
 845
 846                                 scsi_extract_sense(&ccb->csio.sense_data,
 847                                                    &error_code,
 848                                                    &sense_key,
 849                                                    &asc, &ascq);
 850                                 if (sense_key != SSD_KEY_ILLEGAL_REQUEST)
 851                                         scsi_sense_print(&ccb->csio);
 852                         } else {
 853                                 xpt_print(periph->path, "Synchronize cache "
 854                                     "failed, status == 0x%x, scsi status == "
 855                                     "0x%x\n", ccb->csio.ccb_h.status,
 856                                     ccb->csio.scsi_status);
 857                         }
 858                 }
 859
 860                 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
 861                         cam_release_devq(ccb->ccb_h.path,
 862                                          /*relsim_flags*/0,
 863                                          /*reduction*/0,
 864                                          /*timeout*/0,
 865                                          /*getcount_only*/0);
 866
 867                 xpt_release_ccb(ccb);
 868
 869         }
 870
 871         if ((softc->flags & DA_FLAG_PACK_REMOVABLE) != 0) {
 872                 if ((softc->quirks & DA_Q_NO_PREVENT) == 0)
 873                         daprevent(periph, PR_ALLOW);
 874                 /*
 875                  * If we've got removeable media, mark the blocksize as
 876                  * unavailable, since it could change when new media is
 877                  * inserted.
 878                  */
 879                 softc->device_stats.flags |= DEVSTAT_BS_UNAVAILABLE;
 880         }
 881
 882         /*
 883          * Don't compound any ref counting software bugs with more.
 884          */
 885         if (softc->flags & DA_FLAG_OPEN) {
 886                 softc->flags &= ~DA_FLAG_OPEN;
 887                 cam_periph_release(periph);
 888         } else {
 889                 xpt_print(periph->path,
 890                           "daclose() called on an already closed device!\n");
 891         }
 892         cam_periph_unhold(periph);
 893         cam_periph_unlock(periph);
 894         return (0);
 895 }
 896
 897 /*
 898  * Actually translate the requested transfer into one the physical driver
 899  * can understand.  The transfer is described by a buf and will include
 900  * only one physical transfer.
 901  */
 902 static int
 903 dastrategy(struct dev_strategy_args *ap)
 904 {
 905         cdev_t dev = ap->a_head.a_dev;
 906         struct bio *bio = ap->a_bio;
 907         struct buf *bp = bio->bio_buf;
 908         struct cam_periph *periph;
 909         struct da_softc *softc;
 910         u_int  unit;
 911         u_int  part;
 912
 913         unit = dkunit(dev);
 914         part = dkpart(dev);
 915         periph = cam_extend_get(daperiphs, unit);
 916         if (periph == NULL) {
 917                 bp->b_error = ENXIO;
 918                 goto bad;
 919         }
 920         softc = (struct da_softc *)periph->softc;
 921
 922         cam_periph_lock(periph);
 923
 924 #if 0
 925         /*
 926          * check it's not too big a transfer for our adapter
 927          */
 928         scsi_minphys(bp, &sd_switch);
 929 #endif
 930
 931         /*
 932          * Mask interrupts so that the pack cannot be invalidated until
 933          * after we are in the queue.  Otherwise, we might not properly
 934          * clean up one of the buffers.
 935          */
 936
 937         /*
 938          * If the device has been made invalid, error out
 939          */
 940         if ((softc->flags & DA_FLAG_PACK_INVALID)) {
 941                 cam_periph_unlock(periph);
 942                 bp->b_error = ENXIO;
 943                 goto bad;
 944         }
 945
 946         /*
 947          * Place it in the queue of disk activities for this disk
 948          */
 949         bioqdisksort(&softc->bio_queue, bio);
 950
 951         /*
 952          * Schedule ourselves for performing the work.
 953          */
 954         xpt_schedule(periph, /* XXX priority */1);
 955         cam_periph_unlock(periph);
 956
 957         return(0);
 958 bad:
 959         bp->b_flags |= B_ERROR;
 960
 961         /*
 962          * Correctly set the buf to indicate a completed xfer
 963          */
 964         bp->b_resid = bp->b_bcount;
 965         biodone(bio);
 966         return(0);
 967 }
 968
 969 static int
 970 dadump(struct dev_dump_args *ap)
 971 {
 972         cdev_t dev = ap->a_head.a_dev;
 973         struct      cam_periph *periph;
 974         struct      da_softc *softc;
 975         u_int       unit;
 976         long        blkcnt;
 977         vm_paddr_t  addr;
 978         struct      ccb_scsiio csio;
 979         int         dumppages = MAXDUMPPGS;
 980         int         i;
 981
 982         /* toss any characters present prior to dump */
 983         while (cncheckc() != -1)
 984                 ;
 985
 986         unit = dkunit(dev);
 987         periph = cam_extend_get(daperiphs, unit);
 988         if (periph == NULL) {
 989                 return (ENXIO);
 990         }
 991         softc = (struct da_softc *)periph->softc;
 992
 993         cam_periph_lock(periph);
 994         if ((softc->flags & DA_FLAG_PACK_INVALID) != 0) {
 995                 cam_periph_unlock(periph);
 996                 return (ENXIO);
 997         }
 998
 999         addr = 0;       /* starting address */
1000         blkcnt = howmany(PAGE_SIZE, ap->a_secsize);
1001
1002         while (ap->a_count > 0) {
1003                 caddr_t va = NULL;
1004
1005                 if ((ap->a_count / blkcnt) < dumppages)
1006                         dumppages = ap->a_count / blkcnt;
1007
1008                 for (i = 0; i < dumppages; ++i) {
1009                         vm_paddr_t a = addr + (i * PAGE_SIZE);
1010                         if (is_physical_memory(a))
1011                                 va = pmap_kenter_temporary(trunc_page(a), i);
1012                         else
1013                                 va = pmap_kenter_temporary(trunc_page(0), i);
1014                 }
1015
1016                 periph->flags |= CAM_PERIPH_POLLED;
1017                 xpt_setup_ccb(&csio.ccb_h, periph->path, /*priority*/1);
1018                 csio.ccb_h.ccb_state = DA_CCB_DUMP;
1019                 scsi_read_write(&csio,
1020                                 /*retries*/1,
1021                                 dadone,
1022                                 MSG_ORDERED_Q_TAG,
1023                                 /*read*/FALSE,
1024                                 /*byte2*/0,
1025                                 /*minimum_cmd_size*/ softc->minimum_cmd_size,
1026                                 ap->a_blkno,
1027                                 blkcnt * dumppages,
1028                                 /*data_ptr*/(u_int8_t *) va,
1029                                 /*dxfer_len*/blkcnt * ap->a_secsize * dumppages,
1030                                 /*sense_len*/SSD_FULL_SIZE,
1031                                 DA_DEFAULT_TIMEOUT * 1000);
1032                 xpt_polled_action((union ccb *)&csio);
1033
1034                 if ((csio.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1035                         kprintf("Aborting dump due to I/O error.\n");
1036                         if ((csio.ccb_h.status & CAM_STATUS_MASK) ==
1037                              CAM_SCSI_STATUS_ERROR)
1038                                 scsi_sense_print(&csio);
1039                         else
1040                                 kprintf("status == 0x%x, scsi status == 0x%x\n",
1041                                        csio.ccb_h.status, csio.scsi_status);
1042                         periph->flags |= CAM_PERIPH_POLLED;
1043                         return(EIO);
1044                 }
1045
1046                 if (dumpstatus(addr, (off_t)ap->a_count * softc->params.secsize) < 0)
1047                         return (EINTR);
1048
1049                 /* update block count */
1050                 ap->a_count -= blkcnt * dumppages;
1051                 ap->a_blkno += blkcnt * dumppages;
1052                 addr += PAGE_SIZE * dumppages;
1053         }
1054
1055         /*
1056          * Sync the disk cache contents to the physical media.
1057          */
1058         if ((softc->quirks & DA_Q_NO_SYNC_CACHE) == 0) {
1059
1060                 xpt_setup_ccb(&csio.ccb_h, periph->path, /*priority*/1);
1061                 csio.ccb_h.ccb_state = DA_CCB_DUMP;
1062                 scsi_synchronize_cache(&csio,
1063                                        /*retries*/1,
1064                                        /*cbfcnp*/dadone,
1065                                        MSG_SIMPLE_Q_TAG,
1066                                        /*begin_lba*/0,/* Cover the whole disk */
1067                                        /*lb_count*/0,
1068                                        SSD_FULL_SIZE,
1069                                        5 * 60 * 1000);
1070                 xpt_polled_action((union ccb *)&csio);
1071
1072                 if ((csio.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1073                         if ((csio.ccb_h.status & CAM_STATUS_MASK) ==
1074                              CAM_SCSI_STATUS_ERROR) {
1075                                 int asc, ascq;
1076                                 int sense_key, error_code;
1077
1078                                 scsi_extract_sense(&csio.sense_data,
1079                                                    &error_code,
1080                                                    &sense_key,
1081                                                    &asc, &ascq);
1082                                 if (sense_key != SSD_KEY_ILLEGAL_REQUEST)
1083                                         scsi_sense_print(&csio);
1084                         } else {
1085                                 xpt_print(periph->path, "Synchronize cache "
1086                                     "failed, status == 0x%x, scsi status == "
1087                                     "0x%x\n", csio.ccb_h.status,
1088                                     csio.scsi_status);
1089                         }
1090                 }
1091         }
1092         periph->flags &= ~CAM_PERIPH_POLLED;
1093         cam_periph_unlock(periph);
1094         return (0);
1095 }
1096
1097 static void
1098 dainit(void)
1099 {
1100         cam_status status;
1101
1102         /*
1103          * Create our extend array for storing the devices we attach to.
1104          */
1105         daperiphs = cam_extend_new();
1106         if (daperiphs == NULL) {
1107                 kprintf("da: Failed to alloc extend array!\n");
1108                 return;
1109         }
1110
1111         callout_init(&dasendorderedtag_ch);
1112
1113         /*
1114          * Install a global async callback.  This callback will
1115          * receive async callbacks like "new device found".
1116          */
1117         status = xpt_register_async(AC_FOUND_DEVICE, daasync, NULL, NULL);
1118
1119         if (status != CAM_REQ_CMP) {
1120                 kprintf("da: Failed to attach master async callback "
1121                        "due to status 0x%x!\n", status);
1122         } else if (da_send_ordered) {
1123
1124                 /* Register our shutdown event handler */
1125                 if ((EVENTHANDLER_REGISTER(shutdown_post_sync, dashutdown,
1126                                            NULL, SHUTDOWN_PRI_DEFAULT)) == NULL)
1127                     kprintf("dainit: shutdown event registration failed!\n");
1128         }
1129 }
1130
1131 static void
1132 daoninvalidate(struct cam_periph *periph)
1133 {
1134         struct da_softc *softc;
1135         struct bio *q_bio;
1136         struct buf *q_bp;
1137
1138         softc = (struct da_softc *)periph->softc;
1139
1140         /*
1141          * De-register any async callbacks.
1142          */
1143         xpt_register_async(0, daasync, periph, periph->path);
1144
1145         softc->flags |= DA_FLAG_PACK_INVALID;
1146
1147         /*
1148          * Return all queued I/O with ENXIO.
1149          * XXX Handle any transactions queued to the card
1150          *     with XPT_ABORT_CCB.
1151          */
1152         while ((q_bio = bioq_first(&softc->bio_queue)) != NULL){
1153                 bioq_remove(&softc->bio_queue, q_bio);
1154                 q_bp = q_bio->bio_buf;
1155                 q_bp->b_resid = q_bp->b_bcount;
1156                 q_bp->b_error = ENXIO;
1157                 q_bp->b_flags |= B_ERROR;
1158                 biodone(q_bio);
1159         }
1160         xpt_print(periph->path, "lost device\n");
1161 }
1162
1163 static void
1164 dacleanup(struct cam_periph *periph)
1165 {
1166         struct da_softc *softc;
1167
1168         softc = (struct da_softc *)periph->softc;
1169
1170         devstat_remove_entry(&softc->device_stats);
1171         cam_extend_release(daperiphs, periph->unit_number);
1172         xpt_print(periph->path, "removing device entry\n");
1173         /*
1174          * If we can't free the sysctl tree, oh well...
1175          */
1176         if ((softc->flags & DA_FLAG_SCTX_INIT) != 0
1177             && sysctl_ctx_free(&softc->sysctl_ctx) != 0) {
1178                 xpt_print(periph->path, "can't remove sysctl context\n");
1179         }
1180         if (softc->disk.d_rawdev) {
1181                 cam_periph_unlock(periph);
1182                 disk_destroy(&softc->disk);
1183                 cam_periph_lock(periph);
1184         }
1185
1186         callout_stop(&softc->sendordered_c);
1187         kfree(softc, M_DEVBUF);
1188 }
1189
1190 static void
1191 daasync(void *callback_arg, u_int32_t code,
1192         struct cam_path *path, void *arg)
1193 {
1194         struct cam_periph *periph;
1195
1196         periph = (struct cam_periph *)callback_arg;
1197         switch (code) {
1198         case AC_FOUND_DEVICE:
1199         {
1200                 struct ccb_getdev *cgd;
1201                 struct cam_sim *sim;
1202                 cam_status status;
1203
1204                 cgd = (struct ccb_getdev *)arg;
1205                 if (cgd == NULL)
1206                         break;
1207
1208                 if (SID_TYPE(&cgd->inq_data) != T_DIRECT
1209                     && SID_TYPE(&cgd->inq_data) != T_RBC
1210                     && SID_TYPE(&cgd->inq_data) != T_OPTICAL)
1211                         break;
1212
1213                 /*
1214                  * Allocate a peripheral instance for
1215                  * this device and start the probe
1216                  * process.
1217                  */
1218                 sim = xpt_path_sim(cgd->ccb_h.path);
1219                 status = cam_periph_alloc(daregister, daoninvalidate,
1220                                           dacleanup, dastart,
1221                                           "da", CAM_PERIPH_BIO,
1222                                           cgd->ccb_h.path, daasync,
1223                                           AC_FOUND_DEVICE, cgd);
1224
1225                 if (status != CAM_REQ_CMP
1226                  && status != CAM_REQ_INPROG)
1227                         kprintf("daasync: Unable to attach to new device "
1228                                 "due to status 0x%x\n", status);
1229                 break;
1230         }
1231         case AC_SENT_BDR:
1232         case AC_BUS_RESET:
1233         {
1234                 struct da_softc *softc;
1235                 struct ccb_hdr *ccbh;
1236
1237                 softc = (struct da_softc *)periph->softc;
1238                 /*
1239                  * Don't fail on the expected unit attention
1240                  * that will occur.
1241                  */
1242                 softc->flags |= DA_FLAG_RETRY_UA;
1243                 LIST_FOREACH(ccbh, &softc->pending_ccbs, periph_links.le)
1244                         ccbh->ccb_state |= DA_CCB_RETRY_UA;
1245                 /* FALLTHROUGH*/
1246         }
1247         default:
1248                 cam_periph_async(periph, code, path, arg);
1249                 break;
1250         }
1251 }
1252
1253 static void
1254 dasysctlinit(void *context, int pending)
1255 {
1256         struct cam_periph *periph;
1257         struct da_softc *softc;
1258         char tmpstr[80], tmpstr2[80];
1259
1260         periph = (struct cam_periph *)context;
1261         if (cam_periph_acquire(periph) != CAM_REQ_CMP)
1262                 return;
1263
1264         softc = (struct da_softc *)periph->softc;
1265         ksnprintf(tmpstr, sizeof(tmpstr), "CAM DA unit %d", periph->unit_number);
1266         ksnprintf(tmpstr2, sizeof(tmpstr2), "%d", periph->unit_number);
1267
1268         sysctl_ctx_init(&softc->sysctl_ctx);
1269         softc->flags |= DA_FLAG_SCTX_INIT;
1270         softc->sysctl_tree = SYSCTL_ADD_NODE(&softc->sysctl_ctx,
1271                 SYSCTL_STATIC_CHILDREN(_kern_cam_da), OID_AUTO, tmpstr2,
1272                 CTLFLAG_RD, 0, tmpstr);
1273         if (softc->sysctl_tree == NULL) {
1274                 kprintf("dasysctlinit: unable to allocate sysctl tree\n");
1275                 cam_periph_release(periph);
1276                 return;
1277         }
1278
1279         /*
1280          * Now register the sysctl handler, so the user can the value on
1281          * the fly.
1282          */
1283         SYSCTL_ADD_PROC(&softc->sysctl_ctx,SYSCTL_CHILDREN(softc->sysctl_tree),
1284                 OID_AUTO, "minimum_cmd_size", CTLTYPE_INT | CTLFLAG_RW,
1285                 &softc->minimum_cmd_size, 0, dacmdsizesysctl, "I",
1286                 "Minimum CDB size");
1287
1288         cam_periph_release(periph);
1289 }
1290
1291 static int
1292 dacmdsizesysctl(SYSCTL_HANDLER_ARGS)
1293 {
1294         int error, value;
1295
1296         value = *(int *)arg1;
1297
1298         error = sysctl_handle_int(oidp, &value, 0, req);
1299
1300         if ((error != 0)
1301          || (req->newptr == NULL))
1302                 return (error);
1303
1304         /*
1305          * Acceptable values here are 6, 10 or 12, or 16.
1306          */
1307         if (value < 6)
1308                 value = 6;
1309         else if ((value > 6)
1310               && (value <= 10))
1311                 value = 10;
1312         else if ((value > 10)
1313               && (value <= 12))
1314                 value = 12;
1315         else if (value > 12)
1316                 value = 16;
1317
1318         *(int *)arg1 = value;
1319
1320         return (0);
1321 }
1322
1323 static cam_status
1324 daregister(struct cam_periph *periph, void *arg)
1325 {
1326         struct da_softc *softc;
1327         struct ccb_pathinq cpi;
1328         struct ccb_getdev *cgd;
1329         char tmpstr[80];
1330         caddr_t match;
1331
1332         cgd = (struct ccb_getdev *)arg;
1333         if (periph == NULL) {
1334                 kprintf("daregister: periph was NULL!!\n");
1335                 return(CAM_REQ_CMP_ERR);
1336         }
1337
1338         if (cgd == NULL) {
1339                 kprintf("daregister: no getdev CCB, can't register device\n");
1340                 return(CAM_REQ_CMP_ERR);
1341         }
1342
1343         softc = kmalloc(sizeof(*softc), M_DEVBUF, M_INTWAIT | M_ZERO);
1344         LIST_INIT(&softc->pending_ccbs);
1345         softc->state = DA_STATE_PROBE;
1346         bioq_init(&softc->bio_queue);
1347         if (SID_IS_REMOVABLE(&cgd->inq_data))
1348                 softc->flags |= DA_FLAG_PACK_REMOVABLE;
1349         if ((cgd->inq_data.flags & SID_CmdQue) != 0)
1350                 softc->flags |= DA_FLAG_TAGGED_QUEUING;
1351
1352         periph->softc = softc;
1353
1354         cam_extend_set(daperiphs, periph->unit_number, periph);
1355
1356         /*
1357          * See if this device has any quirks.
1358          */
1359         match = cam_quirkmatch((caddr_t)&cgd->inq_data,
1360                                (caddr_t)da_quirk_table,
1361                                sizeof(da_quirk_table)/sizeof(*da_quirk_table),
1362                                sizeof(*da_quirk_table), scsi_inquiry_match);
1363
1364         if (match != NULL)
1365                 softc->quirks = ((struct da_quirk_entry *)match)->quirks;
1366         else
1367                 softc->quirks = DA_Q_NONE;
1368
1369         TASK_INIT(&softc->sysctl_task, 0, dasysctlinit, periph);
1370
1371         /* Check if the SIM does not want 6 byte commands */
1372         xpt_setup_ccb(&cpi.ccb_h, periph->path, /*priority*/1);
1373         cpi.ccb_h.func_code = XPT_PATH_INQ;
1374         xpt_action((union ccb *)&cpi);
1375         if (cpi.ccb_h.status == CAM_REQ_CMP && (cpi.hba_misc & PIM_NO_6_BYTE))
1376                 softc->quirks |= DA_Q_NO_6_BYTE;
1377
1378         /*
1379          * RBC devices don't have to support READ(6), only READ(10).
1380          */
1381         if (softc->quirks & DA_Q_NO_6_BYTE || SID_TYPE(&cgd->inq_data) == T_RBC)
1382                 softc->minimum_cmd_size = 10;
1383         else
1384                 softc->minimum_cmd_size = 6;
1385
1386         /*
1387          * Load the user's default, if any.
1388          */
1389         ksnprintf(tmpstr, sizeof(tmpstr), "kern.cam.da.%d.minimum_cmd_size",
1390                  periph->unit_number);
1391         TUNABLE_INT_FETCH(tmpstr, &softc->minimum_cmd_size);
1392
1393         /*
1394          * 6, 10, 12, and 16 are the currently permissible values.
1395          */
1396         if (softc->minimum_cmd_size < 6)
1397                 softc->minimum_cmd_size = 6;
1398         else if ((softc->minimum_cmd_size > 6)
1399               && (softc->minimum_cmd_size <= 10))
1400                 softc->minimum_cmd_size = 10;
1401         else if ((softc->minimum_cmd_size > 10)
1402               && (softc->minimum_cmd_size <= 12))
1403                 softc->minimum_cmd_size = 12;
1404         else if (softc->minimum_cmd_size > 12)
1405                 softc->minimum_cmd_size = 16;
1406
1407         /*
1408          * The DA driver supports a blocksize, but
1409          * we don't know the blocksize until we do
1410          * a read capacity.  So, set a flag to
1411          * indicate that the blocksize is
1412          * unavailable right now.  We'll clear the
1413          * flag as soon as we've done a read capacity.
1414          */
1415         devstat_add_entry(&softc->device_stats, "da",
1416                           periph->unit_number, 0,
1417                           DEVSTAT_BS_UNAVAILABLE,
1418                           SID_TYPE(&cgd->inq_data) | DEVSTAT_TYPE_IF_SCSI,
1419                           DEVSTAT_PRIORITY_DISK);
1420
1421         /*
1422          * Register this media as a disk
1423          */
1424
1425         CAM_SIM_UNLOCK(periph->sim);
1426         disk_create(periph->unit_number, &softc->disk, &da_ops);
1427         softc->disk.d_rawdev->si_iosize_max = MAXPHYS;
1428         CAM_SIM_LOCK(periph->sim);
1429
1430         /*
1431          * Add async callbacks for bus reset and
1432          * bus device reset calls.  I don't bother
1433          * checking if this fails as, in most cases,
1434          * the system will function just fine without
1435          * them and the only alternative would be to
1436          * not attach the device on failure.
1437          */
1438         xpt_register_async(AC_SENT_BDR | AC_BUS_RESET | AC_LOST_DEVICE,
1439                            daasync, periph, periph->path);
1440
1441         /*
1442          * Take an exclusive refcount on the periph while dastart is called
1443          * to finish the probe.  The reference will be dropped in dadone at
1444          * the end of probe.
1445          */
1446         cam_periph_hold(periph, 0);
1447         xpt_schedule(periph, /*priority*/5);
1448
1449         /*
1450          * Schedule a periodic event to occasionally send an
1451          * ordered tag to a device.
1452          */
1453         callout_init(&softc->sendordered_c);
1454         callout_reset(&softc->sendordered_c,
1455             (DA_DEFAULT_TIMEOUT * hz) / DA_ORDEREDTAG_INTERVAL,
1456             dasendorderedtag, softc);
1457
1458         return(CAM_REQ_CMP);
1459 }
1460
1461 static void
1462 dastart(struct cam_periph *periph, union ccb *start_ccb)
1463 {
1464         struct da_softc *softc;
1465
1466         softc = (struct da_softc *)periph->softc;
1467
1468         switch (softc->state) {
1469         case DA_STATE_NORMAL:
1470         {
1471                 /* Pull a buffer from the queue and get going on it */
1472                 struct bio *bio;
1473                 struct buf *bp;
1474
1475                 /*
1476                  * See if there is a buf with work for us to do..
1477                  */
1478                 bio = bioq_first(&softc->bio_queue);
1479                 if (periph->immediate_priority <= periph->pinfo.priority) {
1480                         CAM_DEBUG_PRINT(CAM_DEBUG_SUBTRACE,
1481                                         ("queuing for immediate ccb\n"));
1482                         start_ccb->ccb_h.ccb_state = DA_CCB_WAITING;
1483                         SLIST_INSERT_HEAD(&periph->ccb_list, &start_ccb->ccb_h,
1484                                           periph_links.sle);
1485                         periph->immediate_priority = CAM_PRIORITY_NONE;
1486                         wakeup(&periph->ccb_list);
1487                 } else if (bio == NULL) {
1488                         xpt_release_ccb(start_ccb);
1489                 } else {
1490                         u_int8_t tag_code;
1491
1492                         bioq_remove(&softc->bio_queue, bio);
1493                         bp = bio->bio_buf;
1494
1495                         devstat_start_transaction(&softc->device_stats);
1496
1497                         if ((bp->b_flags & B_ORDERED) != 0
1498                          || (softc->flags & DA_FLAG_NEED_OTAG) != 0) {
1499                                 softc->flags &= ~DA_FLAG_NEED_OTAG;
1500                                 softc->ordered_tag_count++;
1501                                 tag_code = MSG_ORDERED_Q_TAG;
1502                         } else {
1503                                 tag_code = MSG_SIMPLE_Q_TAG;
1504                         }
1505
1506                         KKASSERT(bio->bio_offset % softc->params.secsize == 0);
1507
1508                         scsi_read_write(&start_ccb->csio,
1509                                         /*retries*/da_retry_count,
1510                                         dadone,
1511                                         tag_code,
1512                                         (bp->b_cmd == BUF_CMD_READ),
1513                                         /*byte2*/0,
1514                                         softc->minimum_cmd_size,
1515                                         bio->bio_offset / softc->params.secsize,
1516                                         bp->b_bcount / softc->params.secsize,
1517                                         bp->b_data,
1518                                         bp->b_bcount,
1519                                         /*sense_len*/SSD_FULL_SIZE,
1520                                         da_default_timeout * 1000);
1521                         start_ccb->ccb_h.ccb_state = DA_CCB_BUFFER_IO;
1522
1523                         /*
1524                          * Block out any asyncronous callbacks
1525                          * while we touch the pending ccb list.
1526                          */
1527                         LIST_INSERT_HEAD(&softc->pending_ccbs,
1528                                          &start_ccb->ccb_h, periph_links.le);
1529
1530                         softc->outstanding_cmds++;
1531                         /* We expect a unit attention from this device */
1532                         if ((softc->flags & DA_FLAG_RETRY_UA) != 0) {
1533                                 start_ccb->ccb_h.ccb_state |= DA_CCB_RETRY_UA;
1534                                 softc->flags &= ~DA_FLAG_RETRY_UA;
1535                         }
1536
1537                         start_ccb->ccb_h.ccb_bio = bio;
1538                         bio = bioq_first(&softc->bio_queue);
1539
1540                         xpt_action(start_ccb);
1541                 }
1542
1543                 if (bio != NULL) {
1544                         /* Have more work to do, so ensure we stay scheduled */
1545                         xpt_schedule(periph, /* XXX priority */1);
1546                 }
1547                 break;
1548         }
1549         case DA_STATE_PROBE:
1550         {
1551                 struct ccb_scsiio *csio;
1552                 struct scsi_read_capacity_data *rcap;
1553
1554                 rcap = kmalloc(sizeof(*rcap), M_SCSIDA, M_INTWAIT | M_ZERO);
1555                 csio = &start_ccb->csio;
1556                 scsi_read_capacity(csio,
1557                                    /*retries*/4,
1558                                    dadone,
1559                                    MSG_SIMPLE_Q_TAG,
1560                                    rcap,
1561                                    SSD_FULL_SIZE,
1562                                    /*timeout*/5000);
1563                 start_ccb->ccb_h.ccb_bio = NULL;
1564                 start_ccb->ccb_h.ccb_state = DA_CCB_PROBE;
1565                 xpt_action(start_ccb);
1566                 break;
1567         }
1568         case DA_STATE_PROBE2:
1569         {
1570                 struct ccb_scsiio *csio;
1571                 struct scsi_read_capacity_data_long *rcaplong;
1572
1573                 rcaplong = (struct scsi_read_capacity_data_long *)
1574                 kmalloc(sizeof(*rcaplong), M_SCSIDA, M_INTWAIT | M_ZERO);
1575                 if (rcaplong == NULL) {
1576                         kprintf("dastart: Couldn't allocate read_capacity\n");
1577                         /* da_free_periph??? */
1578                         break;
1579                 }
1580                 csio = &start_ccb->csio;
1581                 scsi_read_capacity_16(csio,
1582                                     /*retries*/ 4,
1583                                     /*cbfcnp*/ dadone,
1584                                     /*tag_action*/ MSG_SIMPLE_Q_TAG,
1585                                     /*lba*/ 0,
1586                                     /*reladr*/ 0,
1587                                     /*pmi*/ 0,
1588                                     rcaplong,
1589                                     /*sense_len*/ SSD_FULL_SIZE,
1590                                     /*timeout*/ 60000);
1591                 start_ccb->ccb_h.ccb_bio = NULL;
1592                 start_ccb->ccb_h.ccb_state = DA_CCB_PROBE2;
1593                 xpt_action(start_ccb);
1594                 break;
1595         }
1596         }
1597 }
1598
1599 static int
1600 cmd6workaround(union ccb *ccb)
1601 {
1602         struct scsi_rw_6 cmd6;
1603         struct scsi_rw_10 *cmd10;
1604         struct da_softc *softc;
1605         u_int8_t *cdb;
1606         int frozen;
1607
1608         cdb = ccb->csio.cdb_io.cdb_bytes;
1609
1610         /* Translation only possible if CDB is an array and cmd is R/W6 */
1611         if ((ccb->ccb_h.flags & CAM_CDB_POINTER) != 0 ||
1612             (*cdb != READ_6 && *cdb != WRITE_6))
1613                 return 0;
1614
1615         xpt_print(ccb->ccb_h.path, "READ(6)/WRITE(6) not supported, "
1616             "increasing minimum_cmd_size to 10.\n");
1617         softc = (struct da_softc *)xpt_path_periph(ccb->ccb_h.path)->softc;
1618         softc->minimum_cmd_size = 10;
1619
1620         bcopy(cdb, &cmd6, sizeof(struct scsi_rw_6));
1621         cmd10 = (struct scsi_rw_10 *)cdb;
1622         cmd10->opcode = (cmd6.opcode == READ_6) ? READ_10 : WRITE_10;
1623         cmd10->byte2 = 0;
1624         scsi_ulto4b(scsi_3btoul(cmd6.addr), cmd10->addr);
1625         cmd10->reserved = 0;
1626         scsi_ulto2b(cmd6.length, cmd10->length);
1627         cmd10->control = cmd6.control;
1628         ccb->csio.cdb_len = sizeof(*cmd10);
1629
1630         /* Requeue request, unfreezing queue if necessary */
1631         frozen = (ccb->ccb_h.status & CAM_DEV_QFRZN) != 0;
1632         ccb->ccb_h.status = CAM_REQUEUE_REQ;
1633         xpt_action(ccb);
1634         if (frozen) {
1635                 cam_release_devq(ccb->ccb_h.path,
1636                                  /*relsim_flags*/0,
1637                                  /*reduction*/0,
1638                                  /*timeout*/0,
1639                                  /*getcount_only*/0);
1640         }
1641         return (ERESTART);
1642 }
1643
1644 static void
1645 dadone(struct cam_periph *periph, union ccb *done_ccb)
1646 {
1647         struct da_softc *softc;
1648         struct ccb_scsiio *csio;
1649
1650         softc = (struct da_softc *)periph->softc;
1651         csio = &done_ccb->csio;
1652         switch (csio->ccb_h.ccb_state & DA_CCB_TYPE_MASK) {
1653         case DA_CCB_BUFFER_IO:
1654         {
1655                 struct buf *bp;
1656                 struct bio *bio;
1657
1658                 bio = (struct bio *)done_ccb->ccb_h.ccb_bio;
1659                 bp = bio->bio_buf;
1660                 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1661                         int error;
1662                         int sf;
1663
1664                         if ((csio->ccb_h.ccb_state & DA_CCB_RETRY_UA) != 0)
1665                                 sf = SF_RETRY_UA;
1666                         else
1667                                 sf = 0;
1668
1669                         error = daerror(done_ccb, CAM_RETRY_SELTO, sf);
1670                         if (error == ERESTART) {
1671                                 /*
1672                                  * A retry was scheuled, so
1673                                  * just return.
1674                                  */
1675                                 return;
1676                         }
1677                         if (error != 0) {
1678                                 struct bio *q_bio;
1679                                 struct buf *q_bp;
1680
1681                                 if (error == ENXIO) {
1682                                         /*
1683                                          * Catastrophic error.  Mark our pack as
1684                                          * invalid.
1685                                          */
1686                                         /*
1687                                          * XXX See if this is really a media
1688                                          * XXX change first?
1689                                          */
1690                                         xpt_print(periph->path,
1691                                             "Invalidating pack\n");
1692                                         softc->flags |= DA_FLAG_PACK_INVALID;
1693                                 }
1694
1695                                 /*
1696                                  * return all queued I/O with EIO, so that
1697                                  * the client can retry these I/Os in the
1698                                  * proper order should it attempt to recover.
1699                                  */
1700                                 while ((q_bio = bioq_first(&softc->bio_queue))
1701                                         != NULL) {
1702                                         bioq_remove(&softc->bio_queue, q_bio);
1703                                         q_bp = q_bio->bio_buf;
1704                                         q_bp->b_resid = q_bp->b_bcount;
1705                                         q_bp->b_error = EIO;
1706                                         q_bp->b_flags |= B_ERROR;
1707                                         biodone(q_bio);
1708                                 }
1709                                 bp->b_error = error;
1710                                 bp->b_resid = bp->b_bcount;
1711                                 bp->b_flags |= B_ERROR;
1712                         } else {
1713                                 bp->b_resid = csio->resid;
1714                                 bp->b_error = 0;
1715                                 if (bp->b_resid != 0)
1716                                         bp->b_flags |= B_ERROR;
1717                         }
1718                         if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
1719                                 cam_release_devq(done_ccb->ccb_h.path,
1720                                                  /*relsim_flags*/0,
1721                                                  /*reduction*/0,
1722                                                  /*timeout*/0,
1723                                                  /*getcount_only*/0);
1724                 } else {
1725                         if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
1726                                 panic("REQ_CMP with QFRZN");
1727                         bp->b_resid = csio->resid;
1728                         if (csio->resid > 0)
1729                                 bp->b_flags |= B_ERROR;
1730                 }
1731
1732                 /*
1733                  * Block out any asyncronous callbacks
1734                  * while we touch the pending ccb list.
1735                  */
1736                 LIST_REMOVE(&done_ccb->ccb_h, periph_links.le);
1737                 softc->outstanding_cmds--;
1738                 if (softc->outstanding_cmds == 0)
1739                         softc->flags |= DA_FLAG_WENT_IDLE;
1740
1741                 devstat_end_transaction_buf(&softc->device_stats, bp);
1742                 biodone(bio);
1743                 break;
1744         }
1745         case DA_CCB_PROBE:
1746         case DA_CCB_PROBE2:
1747         {
1748                 struct     scsi_read_capacity_data *rdcap;
1749                 struct     scsi_read_capacity_data_long *rcaplong;
1750                 char       announce_buf[80];
1751
1752                 rdcap = NULL;
1753                 rcaplong = NULL;
1754                 if (softc->state == DA_STATE_PROBE)
1755                         rdcap =(struct scsi_read_capacity_data *)csio->data_ptr;
1756                 else
1757                         rcaplong = (struct scsi_read_capacity_data_long *)
1758                                     csio->data_ptr;
1759
1760                 if ((csio->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP) {
1761                         struct disk_params *dp;
1762                         uint32_t block_size;
1763                         uint64_t maxsector;
1764
1765                         if (softc->state == DA_STATE_PROBE) {
1766                                 block_size = scsi_4btoul(rdcap->length);
1767                                 maxsector = scsi_4btoul(rdcap->addr);
1768
1769                                 /*
1770                                  * According to SBC-2, if the standard 10
1771                                  * byte READ CAPACITY command returns 2^32,
1772                                  * we should issue the 16 byte version of
1773                                  * the command, since the device in question
1774                                  * has more sectors than can be represented
1775                                  * with the short version of the command.
1776                                  */
1777                                 if (maxsector == 0xffffffff) {
1778                                         softc->state = DA_STATE_PROBE2;
1779                                         kfree(rdcap, M_SCSIDA);
1780                                         xpt_release_ccb(done_ccb);
1781                                         xpt_schedule(periph, /*priority*/5);
1782                                         return;
1783                                 }
1784                         } else {
1785                                 block_size = scsi_4btoul(rcaplong->length);
1786                                 maxsector = scsi_8btou64(rcaplong->addr);
1787                         }
1788                         dasetgeom(periph, block_size, maxsector);
1789                         dp = &softc->params;
1790                         ksnprintf(announce_buf, sizeof(announce_buf),
1791                                 "%juMB (%ju %u byte sectors: %dH %dS/T %dC)",
1792                                 (uintmax_t) (((uintmax_t)dp->secsize *
1793                                 dp->sectors) / (1024*1024)),
1794                                 (uintmax_t)dp->sectors,
1795                                 dp->secsize, dp->heads, dp->secs_per_track,
1796                                 dp->cylinders);
1797                 } else {
1798                         int     error;
1799
1800                         announce_buf[0] = '\0';
1801
1802                         /*
1803                          * Retry any UNIT ATTENTION type errors.  They
1804                          * are expected at boot.
1805                          */
1806                         error = daerror(done_ccb, CAM_RETRY_SELTO,
1807                                         SF_RETRY_UA|SF_NO_PRINT);
1808                         if (error == ERESTART) {
1809                                 /*
1810                                  * A retry was scheuled, so
1811                                  * just return.
1812                                  */
1813                                 return;
1814                         } else if (error != 0) {
1815                                 struct scsi_sense_data *sense;
1816                                 int asc, ascq;
1817                                 int sense_key, error_code;
1818                                 int have_sense;
1819                                 cam_status status;
1820                                 struct ccb_getdev cgd;
1821
1822                                 /* Don't wedge this device's queue */
1823                                 status = done_ccb->ccb_h.status;
1824                                 if ((status & CAM_DEV_QFRZN) != 0)
1825                                         cam_release_devq(done_ccb->ccb_h.path,
1826                                                          /*relsim_flags*/0,
1827                                                          /*reduction*/0,
1828                                                          /*timeout*/0,
1829                                                          /*getcount_only*/0);
1830
1831
1832                                 xpt_setup_ccb(&cgd.ccb_h,
1833                                               done_ccb->ccb_h.path,
1834                                               /* priority */ 1);
1835                                 cgd.ccb_h.func_code = XPT_GDEV_TYPE;
1836                                 xpt_action((union ccb *)&cgd);
1837
1838                                 if (((csio->ccb_h.flags & CAM_SENSE_PHYS) != 0)
1839                                  || ((csio->ccb_h.flags & CAM_SENSE_PTR) != 0)
1840                                  || ((status & CAM_AUTOSNS_VALID) == 0))
1841                                         have_sense = FALSE;
1842                                 else
1843                                         have_sense = TRUE;
1844
1845                                 if (have_sense) {
1846                                         sense = &csio->sense_data;
1847                                         scsi_extract_sense(sense, &error_code,
1848                                                            &sense_key,
1849                                                            &asc, &ascq);
1850                                 }
1851                                 /*
1852                                  * Attach to anything that claims to be a
1853                                  * direct access or optical disk device,
1854                                  * as long as it doesn't return a "Logical
1855                                  * unit not supported" (0x25) error.
1856                                  */
1857                                 if ((have_sense) && (asc != 0x25)
1858                                  && (error_code == SSD_CURRENT_ERROR)) {
1859                                         const char *sense_key_desc;
1860                                         const char *asc_desc;
1861
1862                                         scsi_sense_desc(sense_key, asc, ascq,
1863                                                         &cgd.inq_data,
1864                                                         &sense_key_desc,
1865                                                         &asc_desc);
1866                                         ksnprintf(announce_buf,
1867                                             sizeof(announce_buf),
1868                                                 "Attempt to query device "
1869                                                 "size failed: %s, %s",
1870                                                 sense_key_desc,
1871                                                 asc_desc);
1872                                 } else {
1873                                         if (have_sense)
1874                                                 scsi_sense_print(
1875                                                         &done_ccb->csio);
1876                                         else {
1877                                                 xpt_print(periph->path,
1878                                                     "got CAM status %#x\n",
1879                                                     done_ccb->ccb_h.status);
1880                                         }
1881
1882                                         xpt_print(periph->path, "fatal error, "
1883                                             "failed to attach to device\n");
1884
1885                                         /*
1886                                          * Free up resources.
1887                                          */
1888                                         cam_periph_invalidate(periph);
1889                                 }
1890                         }
1891                 }
1892                 kfree(csio->data_ptr, M_SCSIDA);
1893                 if (announce_buf[0] != '\0') {
1894                         xpt_announce_periph(periph, announce_buf);
1895                         /*
1896                          * Create our sysctl variables, now that we know
1897                          * we have successfully attached.
1898                          */
1899                         taskqueue_enqueue(taskqueue_thread[mycpuid],
1900                             &softc->sysctl_task);
1901                 }
1902                 softc->state = DA_STATE_NORMAL;
1903                 /*
1904                  * Since our peripheral may be invalidated by an error
1905                  * above or an external event, we must release our CCB
1906                  * before releasing the probe lock on the peripheral.
1907                  * The peripheral will only go away once the last lock
1908                  * is removed, and we need it around for the CCB release
1909                  * operation.
1910                  */
1911                 xpt_release_ccb(done_ccb);
1912                 cam_periph_unhold(periph);
1913                 return;
1914         }
1915         case DA_CCB_WAITING:
1916         {
1917                 /* Caller will release the CCB */
1918                 wakeup(&done_ccb->ccb_h.cbfcnp);
1919                 return;
1920         }
1921         case DA_CCB_DUMP:
1922                 /* No-op.  We're polling */
1923                 return;
1924         default:
1925                 break;
1926         }
1927         xpt_release_ccb(done_ccb);
1928 }
1929
1930 static int
1931 daerror(union ccb *ccb, u_int32_t cam_flags, u_int32_t sense_flags)
1932 {
1933         struct da_softc   *softc;
1934         struct cam_periph *periph;
1935         int error;
1936
1937         periph = xpt_path_periph(ccb->ccb_h.path);
1938         softc = (struct da_softc *)periph->softc;
1939
1940         /*
1941          * Automatically detect devices that do not support
1942          * READ(6)/WRITE(6) and upgrade to using 10 byte cdbs.
1943          */
1944         error = 0;
1945         if ((ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_INVALID) {
1946                 error = cmd6workaround(ccb);
1947         } else if (((ccb->ccb_h.status & CAM_STATUS_MASK) ==
1948                    CAM_SCSI_STATUS_ERROR)
1949          && (ccb->ccb_h.status & CAM_AUTOSNS_VALID)
1950          && (ccb->csio.scsi_status == SCSI_STATUS_CHECK_COND)
1951          && ((ccb->ccb_h.flags & CAM_SENSE_PHYS) == 0)
1952          && ((ccb->ccb_h.flags & CAM_SENSE_PTR) == 0)) {
1953                 int sense_key, error_code, asc, ascq;
1954
1955                 scsi_extract_sense(&ccb->csio.sense_data,
1956                                    &error_code, &sense_key, &asc, &ascq);
1957                 if (sense_key == SSD_KEY_ILLEGAL_REQUEST)
1958                         error = cmd6workaround(ccb);
1959         }
1960         if (error == ERESTART)
1961                 return (ERESTART);
1962
1963         /*
1964          * XXX
1965          * Until we have a better way of doing pack validation,
1966          * don't treat UAs as errors.
1967          */
1968         sense_flags |= SF_RETRY_UA;
1969         return(cam_periph_error(ccb, cam_flags, sense_flags,
1970                                 &softc->saved_ccb));
1971 }
1972
1973 static void
1974 daprevent(struct cam_periph *periph, int action)
1975 {
1976         struct  da_softc *softc;
1977         union   ccb *ccb;
1978         int     error;
1979
1980         softc = (struct da_softc *)periph->softc;
1981
1982         if (((action == PR_ALLOW)
1983           && (softc->flags & DA_FLAG_PACK_LOCKED) == 0)
1984          || ((action == PR_PREVENT)
1985           && (softc->flags & DA_FLAG_PACK_LOCKED) != 0)) {
1986                 return;
1987         }
1988
1989         ccb = cam_periph_getccb(periph, /*priority*/1);
1990
1991         scsi_prevent(&ccb->csio,
1992                      /*retries*/1,
1993                      /*cbcfp*/dadone,
1994                      MSG_SIMPLE_Q_TAG,
1995                      action,
1996                      SSD_FULL_SIZE,
1997                      5000);
1998
1999         error = cam_periph_runccb(ccb, /*error_routine*/NULL, CAM_RETRY_SELTO,
2000                                   SF_RETRY_UA, &softc->device_stats);
2001
2002         if (error == 0) {
2003                 if (action == PR_ALLOW)
2004                         softc->flags &= ~DA_FLAG_PACK_LOCKED;
2005                 else
2006                         softc->flags |= DA_FLAG_PACK_LOCKED;
2007         }
2008
2009         xpt_release_ccb(ccb);
2010 }
2011
2012 static int
2013 dagetcapacity(struct cam_periph *periph)
2014 {
2015         struct da_softc *softc;
2016         union ccb *ccb;
2017         struct scsi_read_capacity_data *rcap;
2018         struct scsi_read_capacity_data_long *rcaplong;
2019         uint32_t block_len;
2020         uint64_t maxsector;
2021         int error;
2022
2023         softc = (struct da_softc *)periph->softc;
2024         block_len = 0;
2025         maxsector = 0;
2026         error = 0;
2027
2028         /* Do a read capacity */
2029         rcap = (struct scsi_read_capacity_data *)kmalloc(sizeof(*rcaplong),
2030                                                          M_SCSIDA, M_INTWAIT);
2031
2032         ccb = cam_periph_getccb(periph, /*priority*/1);
2033         scsi_read_capacity(&ccb->csio,
2034                            /*retries*/4,
2035                            /*cbfncp*/dadone,
2036                            MSG_SIMPLE_Q_TAG,
2037                            rcap,
2038                            SSD_FULL_SIZE,
2039                            /*timeout*/60000);
2040         ccb->ccb_h.ccb_bio = NULL;
2041
2042         error = cam_periph_runccb(ccb, daerror,
2043                                   /*cam_flags*/CAM_RETRY_SELTO,
2044                                   /*sense_flags*/SF_RETRY_UA,
2045                                   &softc->device_stats);
2046
2047         if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
2048                 cam_release_devq(ccb->ccb_h.path,
2049                                  /*relsim_flags*/0,
2050                                  /*reduction*/0,
2051                                  /*timeout*/0,
2052                                  /*getcount_only*/0);
2053
2054         if (error == 0) {
2055                 block_len = scsi_4btoul(rcap->length);
2056                 maxsector = scsi_4btoul(rcap->addr);
2057
2058                 if (maxsector != 0xffffffff)
2059                         goto done;
2060         } else
2061                 goto done;
2062
2063         rcaplong = (struct scsi_read_capacity_data_long *)rcap;
2064
2065         scsi_read_capacity_16(&ccb->csio,
2066                               /*retries*/ 4,
2067                               /*cbfcnp*/ dadone,
2068                               /*tag_action*/ MSG_SIMPLE_Q_TAG,
2069                               /*lba*/ 0,
2070                               /*reladr*/ 0,
2071                               /*pmi*/ 0,
2072                               rcaplong,
2073                               /*sense_len*/ SSD_FULL_SIZE,
2074                               /*timeout*/ 60000);
2075         ccb->ccb_h.ccb_bio = NULL;
2076
2077         error = cam_periph_runccb(ccb, daerror,
2078                                   /*cam_flags*/CAM_RETRY_SELTO,
2079                                   /*sense_flags*/SF_RETRY_UA,
2080                                   &softc->device_stats);
2081
2082         if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
2083                 cam_release_devq(ccb->ccb_h.path,
2084                                  /*relsim_flags*/0,
2085                                  /*reduction*/0,
2086                                  /*timeout*/0,
2087                                  /*getcount_only*/0);
2088
2089         if (error == 0) {
2090                 block_len = scsi_4btoul(rcaplong->length);
2091                 maxsector = scsi_8btou64(rcaplong->addr);
2092         }
2093
2094 done:
2095
2096         if (error == 0)
2097                 dasetgeom(periph, block_len, maxsector);
2098
2099         xpt_release_ccb(ccb);
2100
2101         kfree(rcap, M_SCSIDA);
2102
2103         return (error);
2104 }
2105
2106 static void
2107 dasetgeom(struct cam_periph *periph, uint32_t block_len, uint64_t maxsector)
2108 {
2109         struct ccb_calc_geometry ccg;
2110         struct da_softc *softc;
2111         struct disk_params *dp;
2112
2113         softc = (struct da_softc *)periph->softc;
2114
2115         dp = &softc->params;
2116         dp->secsize = block_len;
2117         dp->sectors = maxsector + 1;
2118         /*
2119          * Have the controller provide us with a geometry
2120          * for this disk.  The only time the geometry
2121          * matters is when we boot and the controller
2122          * is the only one knowledgeable enough to come
2123          * up with something that will make this a bootable
2124          * device.
2125          */
2126         xpt_setup_ccb(&ccg.ccb_h, periph->path, /*priority*/1);
2127         ccg.ccb_h.func_code = XPT_CALC_GEOMETRY;
2128         ccg.block_size = dp->secsize;
2129         ccg.volume_size = dp->sectors;
2130         ccg.heads = 0;
2131         ccg.secs_per_track = 0;
2132         ccg.cylinders = 0;
2133         xpt_action((union ccb*)&ccg);
2134         if ((ccg.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
2135                 /*
2136                  * We don't know what went wrong here- but just pick
2137                  * a geometry so we don't have nasty things like divide
2138                  * by zero.
2139                  */
2140                 dp->heads = 255;
2141                 dp->secs_per_track = 255;
2142                 dp->cylinders = dp->sectors / (255 * 255);
2143                 if (dp->cylinders == 0) {
2144                         dp->cylinders = 1;
2145                 }
2146         } else {
2147                 dp->heads = ccg.heads;
2148                 dp->secs_per_track = ccg.secs_per_track;
2149                 dp->cylinders = ccg.cylinders;
2150         }
2151 }
2152
2153 static void
2154 dasendorderedtag(void *arg)
2155 {
2156         struct da_softc *softc = arg;
2157
2158         if (da_send_ordered) {
2159                 if ((softc->ordered_tag_count == 0)
2160                  && ((softc->flags & DA_FLAG_WENT_IDLE) == 0)) {
2161                         softc->flags |= DA_FLAG_NEED_OTAG;
2162                 }
2163                 if (softc->outstanding_cmds > 0)
2164                         softc->flags &= ~DA_FLAG_WENT_IDLE;
2165
2166                 softc->ordered_tag_count = 0;
2167         }
2168         /* Queue us up again */
2169         callout_reset(&softc->sendordered_c,
2170             (DA_DEFAULT_TIMEOUT * hz) / DA_ORDEREDTAG_INTERVAL,
2171             dasendorderedtag, softc);
2172 }
2173
2174 /*
2175  * Step through all DA peripheral drivers, and if the device is still open,
2176  * sync the disk cache to physical media.
2177  */
2178 static void
2179 dashutdown(void * arg, int howto)
2180 {
2181         struct cam_periph *periph;
2182         struct da_softc *softc;
2183
2184         TAILQ_FOREACH(periph, &dadriver.units, unit_links) {
2185                 union ccb ccb;
2186
2187                 cam_periph_lock(periph);
2188                 softc = (struct da_softc *)periph->softc;
2189
2190                 /*
2191                  * We only sync the cache if the drive is still open, and
2192                  * if the drive is capable of it..
2193                  */
2194                 if (((softc->flags & DA_FLAG_OPEN) == 0)
2195                  || (softc->quirks & DA_Q_NO_SYNC_CACHE)) {
2196                         cam_periph_unlock(periph);
2197                         continue;
2198                 }
2199
2200                 xpt_setup_ccb(&ccb.ccb_h, periph->path, /*priority*/1);
2201
2202                 ccb.ccb_h.ccb_state = DA_CCB_DUMP;
2203                 scsi_synchronize_cache(&ccb.csio,
2204                                        /*retries*/1,
2205                                        /*cbfcnp*/dadone,
2206                                        MSG_SIMPLE_Q_TAG,
2207                                        /*begin_lba*/0, /* whole disk */
2208                                        /*lb_count*/0,
2209                                        SSD_FULL_SIZE,
2210                                        60 * 60 * 1000);
2211
2212                 xpt_polled_action(&ccb);
2213
2214                 if ((ccb.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
2215                         if (((ccb.ccb_h.status & CAM_STATUS_MASK) ==
2216                              CAM_SCSI_STATUS_ERROR)
2217                          && (ccb.csio.scsi_status == SCSI_STATUS_CHECK_COND)){
2218                                 int error_code, sense_key, asc, ascq;
2219
2220                                 scsi_extract_sense(&ccb.csio.sense_data,
2221                                                    &error_code, &sense_key,
2222                                                    &asc, &ascq);
2223
2224                                 if (sense_key != SSD_KEY_ILLEGAL_REQUEST)
2225                                         scsi_sense_print(&ccb.csio);
2226                         } else {
2227                                 xpt_print(periph->path, "Synchronize "
2228                                     "cache failed, status == 0x%x, scsi status "
2229                                     "== 0x%x\n", ccb.ccb_h.status,
2230                                     ccb.csio.scsi_status);
2231                         }
2232                 }
2233
2234                 if ((ccb.ccb_h.status & CAM_DEV_QFRZN) != 0)
2235                         cam_release_devq(ccb.ccb_h.path,
2236                                          /*relsim_flags*/0,
2237                                          /*reduction*/0,
2238                                          /*timeout*/0,
2239                                          /*getcount_only*/0);
2240
2241                 cam_periph_unlock(periph);
2242         }
2243 }
2244
2245 #else /* !_KERNEL */
2246
2247 /*
2248  * XXX This is only left out of the kernel build to silence warnings.  If,
2249  * for some reason this function is used in the kernel, the ifdefs should
2250  * be moved so it is included both in the kernel and userland.
2251  */
2252 void
2253 scsi_format_unit(struct ccb_scsiio *csio, u_int32_t retries,
2254                  void (*cbfcnp)(struct cam_periph *, union ccb *),
2255                  u_int8_t tag_action, u_int8_t byte2, u_int16_t ileave,
2256                  u_int8_t *data_ptr, u_int32_t dxfer_len, u_int8_t sense_len,
2257                  u_int32_t timeout)
2258 {
2259         struct scsi_format_unit *scsi_cmd;
2260
2261         scsi_cmd = (struct scsi_format_unit *)&csio->cdb_io.cdb_bytes;
2262         scsi_cmd->opcode = FORMAT_UNIT;
2263         scsi_cmd->byte2 = byte2;
2264         scsi_ulto2b(ileave, scsi_cmd->interleave);
2265
2266         cam_fill_csio(csio,
2267                       retries,
2268                       cbfcnp,
2269                       /*flags*/ (dxfer_len > 0) ? CAM_DIR_OUT : CAM_DIR_NONE,
2270                       tag_action,
2271                       data_ptr,
2272                       dxfer_len,
2273                       sense_len,
2274                       sizeof(*scsi_cmd),
2275                       timeout);
2276 }
2277
2278 #endif /* _KERNEL */