sys/cam/ata/ata_da.c

   1 /*-
   2  * Copyright (c) 2009 Alexander Motin <mav@FreeBSD.org>
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer,
  10  *    without modification, immediately at the beginning of the file.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  *
  15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  16  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  17  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  18  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  19  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  20  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  21  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  22  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  23  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  24  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  25  */
  26
  27 #include <sys/cdefs.h>
  28 __FBSDID("$FreeBSD$");
  29
  30 #include "opt_ada.h"
  31
  32 #include <sys/param.h>
  33
  34 #ifdef _KERNEL
  35 #include <sys/systm.h>
  36 #include <sys/kernel.h>
  37 #include <sys/bio.h>
  38 #include <sys/sysctl.h>
  39 #include <sys/taskqueue.h>
  40 #include <sys/lock.h>
  41 #include <sys/mutex.h>
  42 #include <sys/conf.h>
  43 #include <sys/devicestat.h>
  44 #include <sys/eventhandler.h>
  45 #include <sys/malloc.h>
  46 #include <sys/cons.h>
  47 #include <sys/proc.h>
  48 #include <sys/reboot.h>
  49 #include <geom/geom_disk.h>
  50 #endif /* _KERNEL */
  51
  52 #ifndef _KERNEL
  53 #include <stdio.h>
  54 #include <string.h>
  55 #endif /* _KERNEL */
  56
  57 #include <cam/cam.h>
  58 #include <cam/cam_ccb.h>
  59 #include <cam/cam_periph.h>
  60 #include <cam/cam_xpt_periph.h>
  61 #include <cam/cam_sim.h>
  62
  63 #include <cam/ata/ata_all.h>
  64
  65 #include <machine/md_var.h>     /* geometry translation */
  66
  67 #ifdef _KERNEL
  68
  69 #define ATA_MAX_28BIT_LBA               268435455UL
  70
  71 typedef enum {
  72         ADA_STATE_RAHEAD,
  73         ADA_STATE_WCACHE,
  74         ADA_STATE_NORMAL
  75 } ada_state;
  76
  77 typedef enum {
  78         ADA_FLAG_CAN_48BIT      = 0x0002,
  79         ADA_FLAG_CAN_FLUSHCACHE = 0x0004,
  80         ADA_FLAG_CAN_NCQ        = 0x0008,
  81         ADA_FLAG_CAN_DMA        = 0x0010,
  82         ADA_FLAG_NEED_OTAG      = 0x0020,
  83         ADA_FLAG_WAS_OTAG       = 0x0040,
  84         ADA_FLAG_CAN_TRIM       = 0x0080,
  85         ADA_FLAG_OPEN           = 0x0100,
  86         ADA_FLAG_SCTX_INIT      = 0x0200,
  87         ADA_FLAG_CAN_CFA        = 0x0400,
  88         ADA_FLAG_CAN_POWERMGT   = 0x0800,
  89         ADA_FLAG_CAN_DMA48      = 0x1000,
  90         ADA_FLAG_DIRTY          = 0x2000
  91 } ada_flags;
  92
  93 typedef enum {
  94         ADA_Q_NONE              = 0x00,
  95         ADA_Q_4K                = 0x01,
  96 } ada_quirks;
  97
  98 #define ADA_Q_BIT_STRING        \
  99         "\020"                  \
 100         "\0014K"
 101
 102 typedef enum {
 103         ADA_CCB_RAHEAD          = 0x01,
 104         ADA_CCB_WCACHE          = 0x02,
 105         ADA_CCB_BUFFER_IO       = 0x03,
 106         ADA_CCB_DUMP            = 0x05,
 107         ADA_CCB_TRIM            = 0x06,
 108         ADA_CCB_TYPE_MASK       = 0x0F,
 109 } ada_ccb_state;
 110
 111 /* Offsets into our private area for storing information */
 112 #define ccb_state       ppriv_field0
 113 #define ccb_bp          ppriv_ptr1
 114
 115 struct disk_params {
 116         u_int8_t  heads;
 117         u_int8_t  secs_per_track;
 118         u_int32_t cylinders;
 119         u_int32_t secsize;      /* Number of bytes/logical sector */
 120         u_int64_t sectors;      /* Total number sectors */
 121 };
 122
 123 #define TRIM_MAX_BLOCKS 8
 124 #define TRIM_MAX_RANGES (TRIM_MAX_BLOCKS * ATA_DSM_BLK_RANGES)
 125 struct trim_request {
 126         uint8_t         data[TRIM_MAX_RANGES * ATA_DSM_RANGE_SIZE];
 127         TAILQ_HEAD(, bio) bps;
 128 };
 129
 130 struct ada_softc {
 131         struct   bio_queue_head bio_queue;
 132         struct   bio_queue_head trim_queue;
 133         int      outstanding_cmds;      /* Number of active commands */
 134         int      refcount;              /* Active xpt_action() calls */
 135         ada_state state;
 136         ada_flags flags;
 137         ada_quirks quirks;
 138         int      sort_io_queue;
 139         int      trim_max_ranges;
 140         int      trim_running;
 141         int      read_ahead;
 142         int      write_cache;
 143 #ifdef ADA_TEST_FAILURE
 144         int      force_read_error;
 145         int      force_write_error;
 146         int      periodic_read_error;
 147         int      periodic_read_count;
 148 #endif
 149         struct   disk_params params;
 150         struct   disk *disk;
 151         struct task             sysctl_task;
 152         struct sysctl_ctx_list  sysctl_ctx;
 153         struct sysctl_oid       *sysctl_tree;
 154         struct callout          sendordered_c;
 155         struct trim_request     trim_req;
 156 };
 157
 158 struct ada_quirk_entry {
 159         struct scsi_inquiry_pattern inq_pat;
 160         ada_quirks quirks;
 161 };
 162
 163 static struct ada_quirk_entry ada_quirk_table[] =
 164 {
 165         {
 166                 /* Hitachi Advanced Format (4k) drives */
 167                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "Hitachi H??????????E3*", "*" },
 168                 /*quirks*/ADA_Q_4K
 169         },
 170         {
 171                 /* Samsung Advanced Format (4k) drives */
 172                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "SAMSUNG HD155UI*", "*" },
 173                 /*quirks*/ADA_Q_4K
 174         },
 175         {
 176                 /* Samsung Advanced Format (4k) drives */
 177                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "SAMSUNG HD204UI*", "*" },
 178                 /*quirks*/ADA_Q_4K
 179         },
 180         {
 181                 /* Seagate Barracuda Green Advanced Format (4k) drives */
 182                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "ST????DL*", "*" },
 183                 /*quirks*/ADA_Q_4K
 184         },
 185         {
 186                 /* Seagate Barracuda Advanced Format (4k) drives */
 187                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "ST???DM*", "*" },
 188                 /*quirks*/ADA_Q_4K
 189         },
 190         {
 191                 /* Seagate Barracuda Advanced Format (4k) drives */
 192                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "ST????DM*", "*" },
 193                 /*quirks*/ADA_Q_4K
 194         },
 195         {
 196                 /* Seagate Momentus Advanced Format (4k) drives */
 197                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "ST9500423AS*", "*" },
 198                 /*quirks*/ADA_Q_4K
 199         },
 200         {
 201                 /* Seagate Momentus Advanced Format (4k) drives */
 202                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "ST9500424AS*", "*" },
 203                 /*quirks*/ADA_Q_4K
 204         },
 205         {
 206                 /* Seagate Momentus Advanced Format (4k) drives */
 207                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "ST9640423AS*", "*" },
 208                 /*quirks*/ADA_Q_4K
 209         },
 210         {
 211                 /* Seagate Momentus Advanced Format (4k) drives */
 212                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "ST9640424AS*", "*" },
 213                 /*quirks*/ADA_Q_4K
 214         },
 215         {
 216                 /* Seagate Momentus Advanced Format (4k) drives */
 217                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "ST9750420AS*", "*" },
 218                 /*quirks*/ADA_Q_4K
 219         },
 220         {
 221                 /* Seagate Momentus Advanced Format (4k) drives */
 222                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "ST9750422AS*", "*" },
 223                 /*quirks*/ADA_Q_4K
 224         },
 225         {
 226                 /* Seagate Momentus Advanced Format (4k) drives */
 227                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "ST9750423AS*", "*" },
 228                 /*quirks*/ADA_Q_4K
 229         },
 230         {
 231                 /* Seagate Momentus Thin Advanced Format (4k) drives */
 232                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "ST???LT*", "*" },
 233                 /*quirks*/ADA_Q_4K
 234         },
 235         {
 236                 /* WDC Caviar Green Advanced Format (4k) drives */
 237                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "WDC WD????RS*", "*" },
 238                 /*quirks*/ADA_Q_4K
 239         },
 240         {
 241                 /* WDC Caviar Green Advanced Format (4k) drives */
 242                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "WDC WD????RX*", "*" },
 243                 /*quirks*/ADA_Q_4K
 244         },
 245         {
 246                 /* WDC Caviar Green Advanced Format (4k) drives */
 247                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "WDC WD??????RS*", "*" },
 248                 /*quirks*/ADA_Q_4K
 249         },
 250         {
 251                 /* WDC Caviar Green Advanced Format (4k) drives */
 252                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "WDC WD??????RX*", "*" },
 253                 /*quirks*/ADA_Q_4K
 254         },
 255         {
 256                 /* WDC Scorpio Black Advanced Format (4k) drives */
 257                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "WDC WD???PKT*", "*" },
 258                 /*quirks*/ADA_Q_4K
 259         },
 260         {
 261                 /* WDC Scorpio Black Advanced Format (4k) drives */
 262                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "WDC WD?????PKT*", "*" },
 263                 /*quirks*/ADA_Q_4K
 264         },
 265         {
 266                 /* WDC Scorpio Blue Advanced Format (4k) drives */
 267                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "WDC WD???PVT*", "*" },
 268                 /*quirks*/ADA_Q_4K
 269         },
 270         {
 271                 /* WDC Scorpio Blue Advanced Format (4k) drives */
 272                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "WDC WD?????PVT*", "*" },
 273                 /*quirks*/ADA_Q_4K
 274         },
 275         /* SSDs */
 276         {
 277                 /*
 278                  * Corsair Force 2 SSDs
 279                  * 4k optimised & trim only works in 4k requests + 4k aligned
 280                  */
 281                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "Corsair CSSD-F*", "*" },
 282                 /*quirks*/ADA_Q_4K
 283         },
 284         {
 285                 /*
 286                  * Corsair Force 3 SSDs
 287                  * 4k optimised & trim only works in 4k requests + 4k aligned
 288                  */
 289                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "Corsair Force 3*", "*" },
 290                 /*quirks*/ADA_Q_4K
 291         },
 292         {
 293                 /*
 294                  * Corsair Neutron GTX SSDs
 295                  * 4k optimised & trim only works in 4k requests + 4k aligned
 296                  */
 297                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "Corsair Neutron GTX*", "*" },
 298                 /*quirks*/ADA_Q_4K
 299         },
 300         {
 301                 /*
 302                  * Corsair Force GT & GS SSDs
 303                  * 4k optimised & trim only works in 4k requests + 4k aligned
 304                  */
 305                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "Corsair Force G*", "*" },
 306                 /*quirks*/ADA_Q_4K
 307         },
 308         {
 309                 /*
 310                  * Crucial M4 SSDs
 311                  * 4k optimised & trim only works in 4k requests + 4k aligned
 312                  */
 313                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "M4-CT???M4SSD2*", "*" },
 314                 /*quirks*/ADA_Q_4K
 315         },
 316         {
 317                 /*
 318                  * Crucial RealSSD C300 SSDs
 319                  * 4k optimised
 320                  */
 321                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "C300-CTFDDAC???MAG*",
 322                 "*" }, /*quirks*/ADA_Q_4K
 323         },
 324         {
 325                 /*
 326                  * Intel 320 Series SSDs
 327                  * 4k optimised & trim only works in 4k requests + 4k aligned
 328                  */
 329                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "INTEL SSDSA2CW*", "*" },
 330                 /*quirks*/ADA_Q_4K
 331         },
 332         {
 333                 /*
 334                  * Intel 330 Series SSDs
 335                  * 4k optimised & trim only works in 4k requests + 4k aligned
 336                  */
 337                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "INTEL SSDSC2CT*", "*" },
 338                 /*quirks*/ADA_Q_4K
 339         },
 340         {
 341                 /*
 342                  * Intel 510 Series SSDs
 343                  * 4k optimised & trim only works in 4k requests + 4k aligned
 344                  */
 345                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "INTEL SSDSC2MH*", "*" },
 346                 /*quirks*/ADA_Q_4K
 347         },
 348         {
 349                 /*
 350                  * Intel 520 Series SSDs
 351                  * 4k optimised & trim only works in 4k requests + 4k aligned
 352                  */
 353                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "INTEL SSDSC2BW*", "*" },
 354                 /*quirks*/ADA_Q_4K
 355         },
 356         {
 357                 /*
 358                  * Intel X25-M Series SSDs
 359                  * 4k optimised & trim only works in 4k requests + 4k aligned
 360                  */
 361                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "INTEL SSDSA2M*", "*" },
 362                 /*quirks*/ADA_Q_4K
 363         },
 364         {
 365                 /*
 366                  * Kingston E100 Series SSDs
 367                  * 4k optimised & trim only works in 4k requests + 4k aligned
 368                  */
 369                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "KINGSTON SE100S3*", "*" },
 370                 /*quirks*/ADA_Q_4K
 371         },
 372         {
 373                 /*
 374                  * Kingston HyperX 3k SSDs
 375                  * 4k optimised & trim only works in 4k requests + 4k aligned
 376                  */
 377                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "KINGSTON SH103S3*", "*" },
 378                 /*quirks*/ADA_Q_4K
 379         },
 380         {
 381                 /*
 382                  * Marvell SSDs (entry taken from OpenSolaris)
 383                  * 4k optimised & trim only works in 4k requests + 4k aligned
 384                  */
 385                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "MARVELL SD88SA02*", "*" },
 386                 /*quirks*/ADA_Q_4K
 387         },
 388         {
 389                 /*
 390                  * OCZ Agility 2 SSDs
 391                  * 4k optimised & trim only works in 4k requests + 4k aligned
 392                  */
 393                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "OCZ-AGILITY2*", "*" },
 394                 /*quirks*/ADA_Q_4K
 395         },
 396         {
 397                 /*
 398                  * OCZ Agility 3 SSDs
 399                  * 4k optimised & trim only works in 4k requests + 4k aligned
 400                  */
 401                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "OCZ-AGILITY3*", "*" },
 402                 /*quirks*/ADA_Q_4K
 403         },
 404         {
 405                 /*
 406                  * OCZ Deneva R Series SSDs
 407                  * 4k optimised & trim only works in 4k requests + 4k aligned
 408                  */
 409                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "DENRSTE251M45*", "*" },
 410                 /*quirks*/ADA_Q_4K
 411         },
 412         {
 413                 /*
 414                  * OCZ Vertex 2 SSDs (inc pro series)
 415                  * 4k optimised & trim only works in 4k requests + 4k aligned
 416                  */
 417                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "OCZ?VERTEX2*", "*" },
 418                 /*quirks*/ADA_Q_4K
 419         },
 420         {
 421                 /*
 422                  * OCZ Vertex 3 SSDs
 423                  * 4k optimised & trim only works in 4k requests + 4k aligned
 424                  */
 425                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "OCZ-VERTEX3*", "*" },
 426                 /*quirks*/ADA_Q_4K
 427         },
 428         {
 429                 /*
 430                  * OCZ Vertex 4 SSDs
 431                  * 4k optimised & trim only works in 4k requests + 4k aligned
 432                  */
 433                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "OCZ-VERTEX4*", "*" },
 434                 /*quirks*/ADA_Q_4K
 435         },
 436         {
 437                 /*
 438                  * Samsung 830 Series SSDs
 439                  * 4k optimised
 440                  */
 441                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "SAMSUNG SSD 830 Series*", "*" },
 442                 /*quirks*/ADA_Q_4K
 443         },
 444         {
 445                 /*
 446                  * Samsung 840 SSDs
 447                  * 4k optimised
 448                  */
 449                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "Samsung SSD 840*", "*" },
 450                 /*quirks*/ADA_Q_4K
 451         },
 452         {
 453                 /*
 454                  * SuperTalent TeraDrive CT SSDs
 455                  * 4k optimised & trim only works in 4k requests + 4k aligned
 456                  */
 457                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "FTM??CT25H*", "*" },
 458                 /*quirks*/ADA_Q_4K
 459         },
 460         {
 461                 /*
 462                  * XceedIOPS SATA SSDs
 463                  * 4k optimised
 464                  */
 465                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "SG9XCS2D*", "*" },
 466                 /*quirks*/ADA_Q_4K
 467         },
 468         {
 469                 /* Default */
 470                 {
 471                   T_ANY, SIP_MEDIA_REMOVABLE|SIP_MEDIA_FIXED,
 472                   /*vendor*/"*", /*product*/"*", /*revision*/"*"
 473                 },
 474                 /*quirks*/0
 475         },
 476 };
 477
 478 static  disk_strategy_t adastrategy;
 479 static  dumper_t        adadump;
 480 static  periph_init_t   adainit;
 481 static  void            adaasync(void *callback_arg, u_int32_t code,
 482                                 struct cam_path *path, void *arg);
 483 static  void            adasysctlinit(void *context, int pending);
 484 static  periph_ctor_t   adaregister;
 485 static  periph_dtor_t   adacleanup;
 486 static  periph_start_t  adastart;
 487 static  periph_oninv_t  adaoninvalidate;
 488 static  void            adadone(struct cam_periph *periph,
 489                                union ccb *done_ccb);
 490 static  int             adaerror(union ccb *ccb, u_int32_t cam_flags,
 491                                 u_int32_t sense_flags);
 492 static void             adagetparams(struct cam_periph *periph,
 493                                 struct ccb_getdev *cgd);
 494 static timeout_t        adasendorderedtag;
 495 static void             adashutdown(void *arg, int howto);
 496 static void             adasuspend(void *arg);
 497 static void             adaresume(void *arg);
 498
 499 #ifndef ADA_DEFAULT_LEGACY_ALIASES
 500 #define ADA_DEFAULT_LEGACY_ALIASES      1
 501 #endif
 502
 503 #ifndef ADA_DEFAULT_TIMEOUT
 504 #define ADA_DEFAULT_TIMEOUT 30  /* Timeout in seconds */
 505 #endif
 506
 507 #ifndef ADA_DEFAULT_RETRY
 508 #define ADA_DEFAULT_RETRY       4
 509 #endif
 510
 511 #ifndef ADA_DEFAULT_SEND_ORDERED
 512 #define ADA_DEFAULT_SEND_ORDERED        1
 513 #endif
 514
 515 #ifndef ADA_DEFAULT_SPINDOWN_SHUTDOWN
 516 #define ADA_DEFAULT_SPINDOWN_SHUTDOWN   1
 517 #endif
 518
 519 #ifndef ADA_DEFAULT_SPINDOWN_SUSPEND
 520 #define ADA_DEFAULT_SPINDOWN_SUSPEND    1
 521 #endif
 522
 523 #ifndef ADA_DEFAULT_READ_AHEAD
 524 #define ADA_DEFAULT_READ_AHEAD  1
 525 #endif
 526
 527 #ifndef ADA_DEFAULT_WRITE_CACHE
 528 #define ADA_DEFAULT_WRITE_CACHE 1
 529 #endif
 530
 531 #define ADA_RA  (softc->read_ahead >= 0 ? \
 532                  softc->read_ahead : ada_read_ahead)
 533 #define ADA_WC  (softc->write_cache >= 0 ? \
 534                  softc->write_cache : ada_write_cache)
 535 #define ADA_SIO (softc->sort_io_queue >= 0 ? \
 536                  softc->sort_io_queue : cam_sort_io_queues)
 537
 538 /*
 539  * Most platforms map firmware geometry to actual, but some don't.  If
 540  * not overridden, default to nothing.
 541  */
 542 #ifndef ata_disk_firmware_geom_adjust
 543 #define ata_disk_firmware_geom_adjust(disk)
 544 #endif
 545
 546 static int ada_legacy_aliases = ADA_DEFAULT_LEGACY_ALIASES;
 547 static int ada_retry_count = ADA_DEFAULT_RETRY;
 548 static int ada_default_timeout = ADA_DEFAULT_TIMEOUT;
 549 static int ada_send_ordered = ADA_DEFAULT_SEND_ORDERED;
 550 static int ada_spindown_shutdown = ADA_DEFAULT_SPINDOWN_SHUTDOWN;
 551 static int ada_spindown_suspend = ADA_DEFAULT_SPINDOWN_SUSPEND;
 552 static int ada_read_ahead = ADA_DEFAULT_READ_AHEAD;
 553 static int ada_write_cache = ADA_DEFAULT_WRITE_CACHE;
 554
 555 static SYSCTL_NODE(_kern_cam, OID_AUTO, ada, CTLFLAG_RD, 0,
 556             "CAM Direct Access Disk driver");
 557 SYSCTL_INT(_kern_cam_ada, OID_AUTO, legacy_aliases, CTLFLAG_RW,
 558            &ada_legacy_aliases, 0, "Create legacy-like device aliases");
 559 TUNABLE_INT("kern.cam.ada.legacy_aliases", &ada_legacy_aliases);
 560 SYSCTL_INT(_kern_cam_ada, OID_AUTO, retry_count, CTLFLAG_RW,
 561            &ada_retry_count, 0, "Normal I/O retry count");
 562 TUNABLE_INT("kern.cam.ada.retry_count", &ada_retry_count);
 563 SYSCTL_INT(_kern_cam_ada, OID_AUTO, default_timeout, CTLFLAG_RW,
 564            &ada_default_timeout, 0, "Normal I/O timeout (in seconds)");
 565 TUNABLE_INT("kern.cam.ada.default_timeout", &ada_default_timeout);
 566 SYSCTL_INT(_kern_cam_ada, OID_AUTO, send_ordered, CTLFLAG_RW,
 567            &ada_send_ordered, 0, "Send Ordered Tags");
 568 TUNABLE_INT("kern.cam.ada.send_ordered", &ada_send_ordered);
 569 SYSCTL_INT(_kern_cam_ada, OID_AUTO, spindown_shutdown, CTLFLAG_RW,
 570            &ada_spindown_shutdown, 0, "Spin down upon shutdown");
 571 TUNABLE_INT("kern.cam.ada.spindown_shutdown", &ada_spindown_shutdown);
 572 SYSCTL_INT(_kern_cam_ada, OID_AUTO, spindown_suspend, CTLFLAG_RW,
 573            &ada_spindown_suspend, 0, "Spin down upon suspend");
 574 TUNABLE_INT("kern.cam.ada.spindown_suspend", &ada_spindown_suspend);
 575 SYSCTL_INT(_kern_cam_ada, OID_AUTO, read_ahead, CTLFLAG_RW,
 576            &ada_read_ahead, 0, "Enable disk read-ahead");
 577 TUNABLE_INT("kern.cam.ada.read_ahead", &ada_read_ahead);
 578 SYSCTL_INT(_kern_cam_ada, OID_AUTO, write_cache, CTLFLAG_RW,
 579            &ada_write_cache, 0, "Enable disk write cache");
 580 TUNABLE_INT("kern.cam.ada.write_cache", &ada_write_cache);
 581
 582 /*
 583  * ADA_ORDEREDTAG_INTERVAL determines how often, relative
 584  * to the default timeout, we check to see whether an ordered
 585  * tagged transaction is appropriate to prevent simple tag
 586  * starvation.  Since we'd like to ensure that there is at least
 587  * 1/2 of the timeout length left for a starved transaction to
 588  * complete after we've sent an ordered tag, we must poll at least
 589  * four times in every timeout period.  This takes care of the worst
 590  * case where a starved transaction starts during an interval that
 591  * meets the requirement "don't send an ordered tag" test so it takes
 592  * us two intervals to determine that a tag must be sent.
 593  */
 594 #ifndef ADA_ORDEREDTAG_INTERVAL
 595 #define ADA_ORDEREDTAG_INTERVAL 4
 596 #endif
 597
 598 static struct periph_driver adadriver =
 599 {
 600         adainit, "ada",
 601         TAILQ_HEAD_INITIALIZER(adadriver.units), /* generation */ 0
 602 };
 603
 604 PERIPHDRIVER_DECLARE(ada, adadriver);
 605
 606 static MALLOC_DEFINE(M_ATADA, "ata_da", "ata_da buffers");
 607
 608 static int
 609 adaopen(struct disk *dp)
 610 {
 611         struct cam_periph *periph;
 612         struct ada_softc *softc;
 613         int error;
 614
 615         periph = (struct cam_periph *)dp->d_drv1;
 616         if (cam_periph_acquire(periph) != CAM_REQ_CMP) {
 617                 return(ENXIO);
 618         }
 619
 620         cam_periph_lock(periph);
 621         if ((error = cam_periph_hold(periph, PRIBIO|PCATCH)) != 0) {
 622                 cam_periph_unlock(periph);
 623                 cam_periph_release(periph);
 624                 return (error);
 625         }
 626
 627         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE | CAM_DEBUG_PERIPH,
 628             ("adaopen\n"));
 629
 630         softc = (struct ada_softc *)periph->softc;
 631         softc->flags |= ADA_FLAG_OPEN;
 632
 633         cam_periph_unhold(periph);
 634         cam_periph_unlock(periph);
 635         return (0);
 636 }
 637
 638 static int
 639 adaclose(struct disk *dp)
 640 {
 641         struct  cam_periph *periph;
 642         struct  ada_softc *softc;
 643         union ccb *ccb;
 644         int error;
 645
 646         periph = (struct cam_periph *)dp->d_drv1;
 647         softc = (struct ada_softc *)periph->softc;
 648         cam_periph_lock(periph);
 649
 650         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE | CAM_DEBUG_PERIPH,
 651             ("adaclose\n"));
 652
 653         /* We only sync the cache if the drive is capable of it. */
 654         if ((softc->flags & ADA_FLAG_DIRTY) != 0 &&
 655             (softc->flags & ADA_FLAG_CAN_FLUSHCACHE) != 0 &&
 656             (periph->flags & CAM_PERIPH_INVALID) == 0 &&
 657             cam_periph_hold(periph, PRIBIO) == 0) {
 658
 659                 ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL);
 660                 cam_fill_ataio(&ccb->ataio,
 661                                     1,
 662                                     adadone,
 663                                     CAM_DIR_NONE,
 664                                     0,
 665                                     NULL,
 666                                     0,
 667                                     ada_default_timeout*1000);
 668
 669                 if (softc->flags & ADA_FLAG_CAN_48BIT)
 670                         ata_48bit_cmd(&ccb->ataio, ATA_FLUSHCACHE48, 0, 0, 0);
 671                 else
 672                         ata_28bit_cmd(&ccb->ataio, ATA_FLUSHCACHE, 0, 0, 0);
 673                 error = cam_periph_runccb(ccb, adaerror, /*cam_flags*/0,
 674                     /*sense_flags*/0, softc->disk->d_devstat);
 675
 676                 if (error != 0)
 677                         xpt_print(periph->path, "Synchronize cache failed\n");
 678                 else
 679                         softc->flags &= ~ADA_FLAG_DIRTY;
 680                 xpt_release_ccb(ccb);
 681                 cam_periph_unhold(periph);
 682         }
 683
 684         softc->flags &= ~ADA_FLAG_OPEN;
 685
 686         while (softc->refcount != 0)
 687                 cam_periph_sleep(periph, &softc->refcount, PRIBIO, "adaclose", 1);
 688         cam_periph_unlock(periph);
 689         cam_periph_release(periph);
 690         return (0);
 691 }
 692
 693 static void
 694 adaschedule(struct cam_periph *periph)
 695 {
 696         struct ada_softc *softc = (struct ada_softc *)periph->softc;
 697
 698         if (softc->state != ADA_STATE_NORMAL)
 699                 return;
 700
 701         /* Check if we have more work to do. */
 702         if (bioq_first(&softc->bio_queue) ||
 703             (!softc->trim_running && bioq_first(&softc->trim_queue))) {
 704                 xpt_schedule(periph, CAM_PRIORITY_NORMAL);
 705         }
 706 }
 707
 708 /*
 709  * Actually translate the requested transfer into one the physical driver
 710  * can understand.  The transfer is described by a buf and will include
 711  * only one physical transfer.
 712  */
 713 static void
 714 adastrategy(struct bio *bp)
 715 {
 716         struct cam_periph *periph;
 717         struct ada_softc *softc;
 718
 719         periph = (struct cam_periph *)bp->bio_disk->d_drv1;
 720         softc = (struct ada_softc *)periph->softc;
 721
 722         cam_periph_lock(periph);
 723
 724         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("adastrategy(%p)\n", bp));
 725
 726         /*
 727          * If the device has been made invalid, error out
 728          */
 729         if ((periph->flags & CAM_PERIPH_INVALID) != 0) {
 730                 cam_periph_unlock(periph);
 731                 biofinish(bp, NULL, ENXIO);
 732                 return;
 733         }
 734
 735         /*
 736          * Place it in the queue of disk activities for this disk
 737          */
 738         if (bp->bio_cmd == BIO_DELETE) {
 739                 KASSERT((softc->flags & ADA_FLAG_CAN_TRIM) ||
 740                         ((softc->flags & ADA_FLAG_CAN_CFA) &&
 741                          !(softc->flags & ADA_FLAG_CAN_48BIT)),
 742                         ("BIO_DELETE but no supported TRIM method."));
 743                 bioq_disksort(&softc->trim_queue, bp);
 744         } else {
 745                 if (ADA_SIO)
 746                     bioq_disksort(&softc->bio_queue, bp);
 747                 else
 748                     bioq_insert_tail(&softc->bio_queue, bp);
 749         }
 750
 751         /*
 752          * Schedule ourselves for performing the work.
 753          */
 754         adaschedule(periph);
 755         cam_periph_unlock(periph);
 756
 757         return;
 758 }
 759
 760 static int
 761 adadump(void *arg, void *virtual, vm_offset_t physical, off_t offset, size_t length)
 762 {
 763         struct      cam_periph *periph;
 764         struct      ada_softc *softc;
 765         u_int       secsize;
 766         union       ccb ccb;
 767         struct      disk *dp;
 768         uint64_t    lba;
 769         uint16_t    count;
 770         int         error = 0;
 771
 772         dp = arg;
 773         periph = dp->d_drv1;
 774         softc = (struct ada_softc *)periph->softc;
 775         cam_periph_lock(periph);
 776         secsize = softc->params.secsize;
 777         lba = offset / secsize;
 778         count = length / secsize;
 779
 780         if ((periph->flags & CAM_PERIPH_INVALID) != 0) {
 781                 cam_periph_unlock(periph);
 782                 return (ENXIO);
 783         }
 784
 785         if (length > 0) {
 786                 xpt_setup_ccb(&ccb.ccb_h, periph->path, CAM_PRIORITY_NORMAL);
 787                 ccb.ccb_h.ccb_state = ADA_CCB_DUMP;
 788                 cam_fill_ataio(&ccb.ataio,
 789                     0,
 790                     adadone,
 791                     CAM_DIR_OUT,
 792                     0,
 793                     (u_int8_t *) virtual,
 794                     length,
 795                     ada_default_timeout*1000);
 796                 if ((softc->flags & ADA_FLAG_CAN_48BIT) &&
 797                     (lba + count >= ATA_MAX_28BIT_LBA ||
 798                     count >= 256)) {
 799                         ata_48bit_cmd(&ccb.ataio, ATA_WRITE_DMA48,
 800                             0, lba, count);
 801                 } else {
 802                         ata_28bit_cmd(&ccb.ataio, ATA_WRITE_DMA,
 803                             0, lba, count);
 804                 }
 805                 xpt_polled_action(&ccb);
 806
 807                 error = cam_periph_error(&ccb,
 808                     0, SF_NO_RECOVERY | SF_NO_RETRY, NULL);
 809                 if ((ccb.ccb_h.status & CAM_DEV_QFRZN) != 0)
 810                         cam_release_devq(ccb.ccb_h.path, /*relsim_flags*/0,
 811                             /*reduction*/0, /*timeout*/0, /*getcount_only*/0);
 812                 if (error != 0)
 813                         printf("Aborting dump due to I/O error.\n");
 814
 815                 cam_periph_unlock(periph);
 816                 return (error);
 817         }
 818
 819         if (softc->flags & ADA_FLAG_CAN_FLUSHCACHE) {
 820                 xpt_setup_ccb(&ccb.ccb_h, periph->path, CAM_PRIORITY_NORMAL);
 821
 822                 ccb.ccb_h.ccb_state = ADA_CCB_DUMP;
 823                 cam_fill_ataio(&ccb.ataio,
 824                                     0,
 825                                     adadone,
 826                                     CAM_DIR_NONE,
 827                                     0,
 828                                     NULL,
 829                                     0,
 830                                     ada_default_timeout*1000);
 831
 832                 if (softc->flags & ADA_FLAG_CAN_48BIT)
 833                         ata_48bit_cmd(&ccb.ataio, ATA_FLUSHCACHE48, 0, 0, 0);
 834                 else
 835                         ata_28bit_cmd(&ccb.ataio, ATA_FLUSHCACHE, 0, 0, 0);
 836                 xpt_polled_action(&ccb);
 837
 838                 error = cam_periph_error(&ccb,
 839                     0, SF_NO_RECOVERY | SF_NO_RETRY, NULL);
 840                 if ((ccb.ccb_h.status & CAM_DEV_QFRZN) != 0)
 841                         cam_release_devq(ccb.ccb_h.path, /*relsim_flags*/0,
 842                             /*reduction*/0, /*timeout*/0, /*getcount_only*/0);
 843                 if (error != 0)
 844                         xpt_print(periph->path, "Synchronize cache failed\n");
 845         }
 846         cam_periph_unlock(periph);
 847         return (error);
 848 }
 849
 850 static void
 851 adainit(void)
 852 {
 853         cam_status status;
 854
 855         /*
 856          * Install a global async callback.  This callback will
 857          * receive async callbacks like "new device found".
 858          */
 859         status = xpt_register_async(AC_FOUND_DEVICE, adaasync, NULL, NULL);
 860
 861         if (status != CAM_REQ_CMP) {
 862                 printf("ada: Failed to attach master async callback "
 863                        "due to status 0x%x!\n", status);
 864         } else if (ada_send_ordered) {
 865
 866                 /* Register our event handlers */
 867                 if ((EVENTHANDLER_REGISTER(power_suspend, adasuspend,
 868                                            NULL, EVENTHANDLER_PRI_LAST)) == NULL)
 869                     printf("adainit: power event registration failed!\n");
 870                 if ((EVENTHANDLER_REGISTER(power_resume, adaresume,
 871                                            NULL, EVENTHANDLER_PRI_LAST)) == NULL)
 872                     printf("adainit: power event registration failed!\n");
 873                 if ((EVENTHANDLER_REGISTER(shutdown_post_sync, adashutdown,
 874                                            NULL, SHUTDOWN_PRI_DEFAULT)) == NULL)
 875                     printf("adainit: shutdown event registration failed!\n");
 876         }
 877 }
 878
 879 /*
 880  * Callback from GEOM, called when it has finished cleaning up its
 881  * resources.
 882  */
 883 static void
 884 adadiskgonecb(struct disk *dp)
 885 {
 886         struct cam_periph *periph;
 887
 888         periph = (struct cam_periph *)dp->d_drv1;
 889
 890         cam_periph_release(periph);
 891 }
 892
 893 static void
 894 adaoninvalidate(struct cam_periph *periph)
 895 {
 896         struct ada_softc *softc;
 897
 898         softc = (struct ada_softc *)periph->softc;
 899
 900         /*
 901          * De-register any async callbacks.
 902          */
 903         xpt_register_async(0, adaasync, periph, periph->path);
 904
 905         /*
 906          * Return all queued I/O with ENXIO.
 907          * XXX Handle any transactions queued to the card
 908          *     with XPT_ABORT_CCB.
 909          */
 910         bioq_flush(&softc->bio_queue, NULL, ENXIO);
 911         bioq_flush(&softc->trim_queue, NULL, ENXIO);
 912
 913         disk_gone(softc->disk);
 914 }
 915
 916 static void
 917 adacleanup(struct cam_periph *periph)
 918 {
 919         struct ada_softc *softc;
 920
 921         softc = (struct ada_softc *)periph->softc;
 922
 923         cam_periph_unlock(periph);
 924
 925         /*
 926          * If we can't free the sysctl tree, oh well...
 927          */
 928         if ((softc->flags & ADA_FLAG_SCTX_INIT) != 0
 929             && sysctl_ctx_free(&softc->sysctl_ctx) != 0) {
 930                 xpt_print(periph->path, "can't remove sysctl context\n");
 931         }
 932
 933         disk_destroy(softc->disk);
 934         callout_drain(&softc->sendordered_c);
 935         free(softc, M_DEVBUF);
 936         cam_periph_lock(periph);
 937 }
 938
 939 static void
 940 adaasync(void *callback_arg, u_int32_t code,
 941         struct cam_path *path, void *arg)
 942 {
 943         struct ccb_getdev cgd;
 944         struct cam_periph *periph;
 945         struct ada_softc *softc;
 946
 947         periph = (struct cam_periph *)callback_arg;
 948         switch (code) {
 949         case AC_FOUND_DEVICE:
 950         {
 951                 struct ccb_getdev *cgd;
 952                 cam_status status;
 953
 954                 cgd = (struct ccb_getdev *)arg;
 955                 if (cgd == NULL)
 956                         break;
 957
 958                 if (cgd->protocol != PROTO_ATA)
 959                         break;
 960
 961                 /*
 962                  * Allocate a peripheral instance for
 963                  * this device and start the probe
 964                  * process.
 965                  */
 966                 status = cam_periph_alloc(adaregister, adaoninvalidate,
 967                                           adacleanup, adastart,
 968                                           "ada", CAM_PERIPH_BIO,
 969                                           path, adaasync,
 970                                           AC_FOUND_DEVICE, cgd);
 971
 972                 if (status != CAM_REQ_CMP
 973                  && status != CAM_REQ_INPROG)
 974                         printf("adaasync: Unable to attach to new device "
 975                                 "due to status 0x%x\n", status);
 976                 break;
 977         }
 978         case AC_GETDEV_CHANGED:
 979         {
 980                 softc = (struct ada_softc *)periph->softc;
 981                 xpt_setup_ccb(&cgd.ccb_h, periph->path, CAM_PRIORITY_NORMAL);
 982                 cgd.ccb_h.func_code = XPT_GDEV_TYPE;
 983                 xpt_action((union ccb *)&cgd);
 984
 985                 if ((cgd.ident_data.capabilities1 & ATA_SUPPORT_DMA) &&
 986                     (cgd.inq_flags & SID_DMA))
 987                         softc->flags |= ADA_FLAG_CAN_DMA;
 988                 else
 989                         softc->flags &= ~ADA_FLAG_CAN_DMA;
 990                 if (cgd.ident_data.support.command2 & ATA_SUPPORT_ADDRESS48) {
 991                         softc->flags |= ADA_FLAG_CAN_48BIT;
 992                         if (cgd.inq_flags & SID_DMA48)
 993                                 softc->flags |= ADA_FLAG_CAN_DMA48;
 994                         else
 995                                 softc->flags &= ~ADA_FLAG_CAN_DMA48;
 996                 } else
 997                         softc->flags &= ~(ADA_FLAG_CAN_48BIT |
 998                             ADA_FLAG_CAN_DMA48);
 999                 if ((cgd.ident_data.satacapabilities & ATA_SUPPORT_NCQ) &&
1000                     (cgd.inq_flags & SID_DMA) && (cgd.inq_flags & SID_CmdQue))
1001                         softc->flags |= ADA_FLAG_CAN_NCQ;
1002                 else
1003                         softc->flags &= ~ADA_FLAG_CAN_NCQ;
1004                 if ((cgd.ident_data.support_dsm & ATA_SUPPORT_DSM_TRIM) &&
1005                     (cgd.inq_flags & SID_DMA))
1006                         softc->flags |= ADA_FLAG_CAN_TRIM;
1007                 else
1008                         softc->flags &= ~ADA_FLAG_CAN_TRIM;
1009
1010                 cam_periph_async(periph, code, path, arg);
1011                 break;
1012         }
1013         case AC_ADVINFO_CHANGED:
1014         {
1015                 uintptr_t buftype;
1016
1017                 buftype = (uintptr_t)arg;
1018                 if (buftype == CDAI_TYPE_PHYS_PATH) {
1019                         struct ada_softc *softc;
1020
1021                         softc = periph->softc;
1022                         disk_attr_changed(softc->disk, "GEOM::physpath",
1023                                           M_NOWAIT);
1024                 }
1025                 break;
1026         }
1027         case AC_SENT_BDR:
1028         case AC_BUS_RESET:
1029         {
1030                 softc = (struct ada_softc *)periph->softc;
1031                 cam_periph_async(periph, code, path, arg);
1032                 if (softc->state != ADA_STATE_NORMAL)
1033                         break;
1034                 xpt_setup_ccb(&cgd.ccb_h, periph->path, CAM_PRIORITY_NORMAL);
1035                 cgd.ccb_h.func_code = XPT_GDEV_TYPE;
1036                 xpt_action((union ccb *)&cgd);
1037                 if (ADA_RA >= 0 &&
1038                     cgd.ident_data.support.command1 & ATA_SUPPORT_LOOKAHEAD)
1039                         softc->state = ADA_STATE_RAHEAD;
1040                 else if (ADA_WC >= 0 &&
1041                     cgd.ident_data.support.command1 & ATA_SUPPORT_WRITECACHE)
1042                         softc->state = ADA_STATE_WCACHE;
1043                 else
1044                     break;
1045                 if (cam_periph_acquire(periph) != CAM_REQ_CMP)
1046                         softc->state = ADA_STATE_NORMAL;
1047                 else
1048                         xpt_schedule(periph, CAM_PRIORITY_DEV);
1049         }
1050         default:
1051                 cam_periph_async(periph, code, path, arg);
1052                 break;
1053         }
1054 }
1055
1056 static void
1057 adasysctlinit(void *context, int pending)
1058 {
1059         struct cam_periph *periph;
1060         struct ada_softc *softc;
1061         char tmpstr[80], tmpstr2[80];
1062
1063         periph = (struct cam_periph *)context;
1064
1065         /* periph was held for us when this task was enqueued */
1066         if ((periph->flags & CAM_PERIPH_INVALID) != 0) {
1067                 cam_periph_release(periph);
1068                 return;
1069         }
1070
1071         softc = (struct ada_softc *)periph->softc;
1072         snprintf(tmpstr, sizeof(tmpstr), "CAM ADA unit %d", periph->unit_number);
1073         snprintf(tmpstr2, sizeof(tmpstr2), "%d", periph->unit_number);
1074
1075         sysctl_ctx_init(&softc->sysctl_ctx);
1076         softc->flags |= ADA_FLAG_SCTX_INIT;
1077         softc->sysctl_tree = SYSCTL_ADD_NODE(&softc->sysctl_ctx,
1078                 SYSCTL_STATIC_CHILDREN(_kern_cam_ada), OID_AUTO, tmpstr2,
1079                 CTLFLAG_RD, 0, tmpstr);
1080         if (softc->sysctl_tree == NULL) {
1081                 printf("adasysctlinit: unable to allocate sysctl tree\n");
1082                 cam_periph_release(periph);
1083                 return;
1084         }
1085
1086         SYSCTL_ADD_INT(&softc->sysctl_ctx, SYSCTL_CHILDREN(softc->sysctl_tree),
1087                 OID_AUTO, "read_ahead", CTLFLAG_RW | CTLFLAG_MPSAFE,
1088                 &softc->read_ahead, 0, "Enable disk read ahead.");
1089         SYSCTL_ADD_INT(&softc->sysctl_ctx, SYSCTL_CHILDREN(softc->sysctl_tree),
1090                 OID_AUTO, "write_cache", CTLFLAG_RW | CTLFLAG_MPSAFE,
1091                 &softc->write_cache, 0, "Enable disk write cache.");
1092         SYSCTL_ADD_INT(&softc->sysctl_ctx, SYSCTL_CHILDREN(softc->sysctl_tree),
1093                 OID_AUTO, "sort_io_queue", CTLFLAG_RW | CTLFLAG_MPSAFE,
1094                 &softc->sort_io_queue, 0,
1095                 "Sort IO queue to try and optimise disk access patterns");
1096 #ifdef ADA_TEST_FAILURE
1097         /*
1098          * Add a 'door bell' sysctl which allows one to set it from userland
1099          * and cause something bad to happen.  For the moment, we only allow
1100          * whacking the next read or write.
1101          */
1102         SYSCTL_ADD_INT(&softc->sysctl_ctx, SYSCTL_CHILDREN(softc->sysctl_tree),
1103                 OID_AUTO, "force_read_error", CTLFLAG_RW | CTLFLAG_MPSAFE,
1104                 &softc->force_read_error, 0,
1105                 "Force a read error for the next N reads.");
1106         SYSCTL_ADD_INT(&softc->sysctl_ctx, SYSCTL_CHILDREN(softc->sysctl_tree),
1107                 OID_AUTO, "force_write_error", CTLFLAG_RW | CTLFLAG_MPSAFE,
1108                 &softc->force_write_error, 0,
1109                 "Force a write error for the next N writes.");
1110         SYSCTL_ADD_INT(&softc->sysctl_ctx, SYSCTL_CHILDREN(softc->sysctl_tree),
1111                 OID_AUTO, "periodic_read_error", CTLFLAG_RW | CTLFLAG_MPSAFE,
1112                 &softc->periodic_read_error, 0,
1113                 "Force a read error every N reads (don't set too low).");
1114 #endif
1115         cam_periph_release(periph);
1116 }
1117
1118 static int
1119 adagetattr(struct bio *bp)
1120 {
1121         int ret;
1122         struct cam_periph *periph;
1123
1124         periph = (struct cam_periph *)bp->bio_disk->d_drv1;
1125         cam_periph_lock(periph);
1126         ret = xpt_getattr(bp->bio_data, bp->bio_length, bp->bio_attribute,
1127             periph->path);
1128         cam_periph_unlock(periph);
1129         if (ret == 0)
1130                 bp->bio_completed = bp->bio_length;
1131         return ret;
1132 }
1133
1134 static cam_status
1135 adaregister(struct cam_periph *periph, void *arg)
1136 {
1137         struct ada_softc *softc;
1138         struct ccb_pathinq cpi;
1139         struct ccb_getdev *cgd;
1140         char   announce_buf[80], buf1[32];
1141         struct disk_params *dp;
1142         caddr_t match;
1143         u_int maxio;
1144         int legacy_id, quirks;
1145
1146         cgd = (struct ccb_getdev *)arg;
1147         if (cgd == NULL) {
1148                 printf("adaregister: no getdev CCB, can't register device\n");
1149                 return(CAM_REQ_CMP_ERR);
1150         }
1151
1152         softc = (struct ada_softc *)malloc(sizeof(*softc), M_DEVBUF,
1153             M_NOWAIT|M_ZERO);
1154
1155         if (softc == NULL) {
1156                 printf("adaregister: Unable to probe new device. "
1157                     "Unable to allocate softc\n");
1158                 return(CAM_REQ_CMP_ERR);
1159         }
1160
1161         bioq_init(&softc->bio_queue);
1162         bioq_init(&softc->trim_queue);
1163
1164         if ((cgd->ident_data.capabilities1 & ATA_SUPPORT_DMA) &&
1165             (cgd->inq_flags & SID_DMA))
1166                 softc->flags |= ADA_FLAG_CAN_DMA;
1167         if (cgd->ident_data.support.command2 & ATA_SUPPORT_ADDRESS48) {
1168                 softc->flags |= ADA_FLAG_CAN_48BIT;
1169                 if (cgd->inq_flags & SID_DMA48)
1170                         softc->flags |= ADA_FLAG_CAN_DMA48;
1171         }
1172         if (cgd->ident_data.support.command2 & ATA_SUPPORT_FLUSHCACHE)
1173                 softc->flags |= ADA_FLAG_CAN_FLUSHCACHE;
1174         if (cgd->ident_data.support.command1 & ATA_SUPPORT_POWERMGT)
1175                 softc->flags |= ADA_FLAG_CAN_POWERMGT;
1176         if ((cgd->ident_data.satacapabilities & ATA_SUPPORT_NCQ) &&
1177             (cgd->inq_flags & SID_DMA) && (cgd->inq_flags & SID_CmdQue))
1178                 softc->flags |= ADA_FLAG_CAN_NCQ;
1179         if ((cgd->ident_data.support_dsm & ATA_SUPPORT_DSM_TRIM) &&
1180             (cgd->inq_flags & SID_DMA)) {
1181                 softc->flags |= ADA_FLAG_CAN_TRIM;
1182                 softc->trim_max_ranges = TRIM_MAX_RANGES;
1183                 if (cgd->ident_data.max_dsm_blocks != 0) {
1184                         softc->trim_max_ranges =
1185                             min(cgd->ident_data.max_dsm_blocks *
1186                                 ATA_DSM_BLK_RANGES, softc->trim_max_ranges);
1187                 }
1188         }
1189         if (cgd->ident_data.support.command2 & ATA_SUPPORT_CFA)
1190                 softc->flags |= ADA_FLAG_CAN_CFA;
1191
1192         periph->softc = softc;
1193
1194         /*
1195          * See if this device has any quirks.
1196          */
1197         match = cam_quirkmatch((caddr_t)&cgd->ident_data,
1198                                (caddr_t)ada_quirk_table,
1199                                sizeof(ada_quirk_table)/sizeof(*ada_quirk_table),
1200                                sizeof(*ada_quirk_table), ata_identify_match);
1201         if (match != NULL)
1202                 softc->quirks = ((struct ada_quirk_entry *)match)->quirks;
1203         else
1204                 softc->quirks = ADA_Q_NONE;
1205
1206         bzero(&cpi, sizeof(cpi));
1207         xpt_setup_ccb(&cpi.ccb_h, periph->path, CAM_PRIORITY_NONE);
1208         cpi.ccb_h.func_code = XPT_PATH_INQ;
1209         xpt_action((union ccb *)&cpi);
1210
1211         TASK_INIT(&softc->sysctl_task, 0, adasysctlinit, periph);
1212
1213         /*
1214          * Register this media as a disk
1215          */
1216         (void)cam_periph_hold(periph, PRIBIO);
1217         cam_periph_unlock(periph);
1218         snprintf(announce_buf, sizeof(announce_buf),
1219             "kern.cam.ada.%d.quirks", periph->unit_number);
1220         quirks = softc->quirks;
1221         TUNABLE_INT_FETCH(announce_buf, &quirks);
1222         softc->quirks = quirks;
1223         softc->read_ahead = -1;
1224         snprintf(announce_buf, sizeof(announce_buf),
1225             "kern.cam.ada.%d.read_ahead", periph->unit_number);
1226         TUNABLE_INT_FETCH(announce_buf, &softc->read_ahead);
1227         softc->write_cache = -1;
1228         snprintf(announce_buf, sizeof(announce_buf),
1229             "kern.cam.ada.%d.write_cache", periph->unit_number);
1230         TUNABLE_INT_FETCH(announce_buf, &softc->write_cache);
1231         /* Disable queue sorting for non-rotational media by default. */
1232         if (cgd->ident_data.media_rotation_rate == ATA_RATE_NON_ROTATING)
1233                 softc->sort_io_queue = 0;
1234         else
1235                 softc->sort_io_queue = -1;
1236         adagetparams(periph, cgd);
1237         softc->disk = disk_alloc();
1238         softc->disk->d_rotation_rate = cgd->ident_data.media_rotation_rate;
1239         softc->disk->d_devstat = devstat_new_entry(periph->periph_name,
1240                           periph->unit_number, softc->params.secsize,
1241                           DEVSTAT_ALL_SUPPORTED,
1242                           DEVSTAT_TYPE_DIRECT |
1243                           XPORT_DEVSTAT_TYPE(cpi.transport),
1244                           DEVSTAT_PRIORITY_DISK);
1245         softc->disk->d_open = adaopen;
1246         softc->disk->d_close = adaclose;
1247         softc->disk->d_strategy = adastrategy;
1248         softc->disk->d_getattr = adagetattr;
1249         softc->disk->d_dump = adadump;
1250         softc->disk->d_gone = adadiskgonecb;
1251         softc->disk->d_name = "ada";
1252         softc->disk->d_drv1 = periph;
1253         maxio = cpi.maxio;              /* Honor max I/O size of SIM */
1254         if (maxio == 0)
1255                 maxio = DFLTPHYS;       /* traditional default */
1256         else if (maxio > MAXPHYS)
1257                 maxio = MAXPHYS;        /* for safety */
1258         if (softc->flags & ADA_FLAG_CAN_48BIT)
1259                 maxio = min(maxio, 65536 * softc->params.secsize);
1260         else                                    /* 28bit ATA command limit */
1261                 maxio = min(maxio, 256 * softc->params.secsize);
1262         softc->disk->d_maxsize = maxio;
1263         softc->disk->d_unit = periph->unit_number;
1264         softc->disk->d_flags = DISKFLAG_DIRECT_COMPLETION;
1265         if (softc->flags & ADA_FLAG_CAN_FLUSHCACHE)
1266                 softc->disk->d_flags |= DISKFLAG_CANFLUSHCACHE;
1267         if (softc->flags & ADA_FLAG_CAN_TRIM) {
1268                 softc->disk->d_flags |= DISKFLAG_CANDELETE;
1269                 softc->disk->d_delmaxsize = softc->params.secsize *
1270                                             ATA_DSM_RANGE_MAX *
1271                                             softc->trim_max_ranges;
1272         } else if ((softc->flags & ADA_FLAG_CAN_CFA) &&
1273             !(softc->flags & ADA_FLAG_CAN_48BIT)) {
1274                 softc->disk->d_flags |= DISKFLAG_CANDELETE;
1275                 softc->disk->d_delmaxsize = 256 * softc->params.secsize;
1276         } else
1277                 softc->disk->d_delmaxsize = maxio;
1278         if ((cpi.hba_misc & PIM_UNMAPPED) != 0)
1279                 softc->disk->d_flags |= DISKFLAG_UNMAPPED_BIO;
1280         strlcpy(softc->disk->d_descr, cgd->ident_data.model,
1281             MIN(sizeof(softc->disk->d_descr), sizeof(cgd->ident_data.model)));
1282         strlcpy(softc->disk->d_ident, cgd->ident_data.serial,
1283             MIN(sizeof(softc->disk->d_ident), sizeof(cgd->ident_data.serial)));
1284         softc->disk->d_hba_vendor = cpi.hba_vendor;
1285         softc->disk->d_hba_device = cpi.hba_device;
1286         softc->disk->d_hba_subvendor = cpi.hba_subvendor;
1287         softc->disk->d_hba_subdevice = cpi.hba_subdevice;
1288
1289         softc->disk->d_sectorsize = softc->params.secsize;
1290         softc->disk->d_mediasize = (off_t)softc->params.sectors *
1291             softc->params.secsize;
1292         if (ata_physical_sector_size(&cgd->ident_data) !=
1293             softc->params.secsize) {
1294                 softc->disk->d_stripesize =
1295                     ata_physical_sector_size(&cgd->ident_data);
1296                 softc->disk->d_stripeoffset = (softc->disk->d_stripesize -
1297                     ata_logical_sector_offset(&cgd->ident_data)) %
1298                     softc->disk->d_stripesize;
1299         } else if (softc->quirks & ADA_Q_4K) {
1300                 softc->disk->d_stripesize = 4096;
1301                 softc->disk->d_stripeoffset = 0;
1302         }
1303         softc->disk->d_fwsectors = softc->params.secs_per_track;
1304         softc->disk->d_fwheads = softc->params.heads;
1305         ata_disk_firmware_geom_adjust(softc->disk);
1306
1307         if (ada_legacy_aliases) {
1308 #ifdef ATA_STATIC_ID
1309                 legacy_id = xpt_path_legacy_ata_id(periph->path);
1310 #else
1311                 legacy_id = softc->disk->d_unit;
1312 #endif
1313                 if (legacy_id >= 0) {
1314                         snprintf(announce_buf, sizeof(announce_buf),
1315                             "kern.devalias.%s%d",
1316                             softc->disk->d_name, softc->disk->d_unit);
1317                         snprintf(buf1, sizeof(buf1),
1318                             "ad%d", legacy_id);
1319                         setenv(announce_buf, buf1);
1320                 }
1321         } else
1322                 legacy_id = -1;
1323         /*
1324          * Acquire a reference to the periph before we register with GEOM.
1325          * We'll release this reference once GEOM calls us back (via
1326          * adadiskgonecb()) telling us that our provider has been freed.
1327          */
1328         if (cam_periph_acquire(periph) != CAM_REQ_CMP) {
1329                 xpt_print(periph->path, "%s: lost periph during "
1330                           "registration!\n", __func__);
1331                 cam_periph_lock(periph);
1332                 return (CAM_REQ_CMP_ERR);
1333         }
1334         disk_create(softc->disk, DISK_VERSION);
1335         cam_periph_lock(periph);
1336         cam_periph_unhold(periph);
1337
1338         dp = &softc->params;
1339         snprintf(announce_buf, sizeof(announce_buf),
1340                 "%juMB (%ju %u byte sectors: %dH %dS/T %dC)",
1341                 (uintmax_t)(((uintmax_t)dp->secsize *
1342                 dp->sectors) / (1024*1024)),
1343                 (uintmax_t)dp->sectors,
1344                 dp->secsize, dp->heads,
1345                 dp->secs_per_track, dp->cylinders);
1346         xpt_announce_periph(periph, announce_buf);
1347         xpt_announce_quirks(periph, softc->quirks, ADA_Q_BIT_STRING);
1348         if (legacy_id >= 0)
1349                 printf("%s%d: Previously was known as ad%d\n",
1350                        periph->periph_name, periph->unit_number, legacy_id);
1351
1352         /*
1353          * Create our sysctl variables, now that we know
1354          * we have successfully attached.
1355          */
1356         if (cam_periph_acquire(periph) == CAM_REQ_CMP)
1357                 taskqueue_enqueue(taskqueue_thread, &softc->sysctl_task);
1358
1359         /*
1360          * Add async callbacks for bus reset and
1361          * bus device reset calls.  I don't bother
1362          * checking if this fails as, in most cases,
1363          * the system will function just fine without
1364          * them and the only alternative would be to
1365          * not attach the device on failure.
1366          */
1367         xpt_register_async(AC_SENT_BDR | AC_BUS_RESET | AC_LOST_DEVICE |
1368             AC_GETDEV_CHANGED | AC_ADVINFO_CHANGED,
1369             adaasync, periph, periph->path);
1370
1371         /*
1372          * Schedule a periodic event to occasionally send an
1373          * ordered tag to a device.
1374          */
1375         callout_init_mtx(&softc->sendordered_c, cam_periph_mtx(periph), 0);
1376         callout_reset(&softc->sendordered_c,
1377             (ada_default_timeout * hz) / ADA_ORDEREDTAG_INTERVAL,
1378             adasendorderedtag, softc);
1379
1380         if (ADA_RA >= 0 &&
1381             cgd->ident_data.support.command1 & ATA_SUPPORT_LOOKAHEAD) {
1382                 softc->state = ADA_STATE_RAHEAD;
1383         } else if (ADA_WC >= 0 &&
1384             cgd->ident_data.support.command1 & ATA_SUPPORT_WRITECACHE) {
1385                 softc->state = ADA_STATE_WCACHE;
1386         } else {
1387                 softc->state = ADA_STATE_NORMAL;
1388                 return(CAM_REQ_CMP);
1389         }
1390         if (cam_periph_acquire(periph) != CAM_REQ_CMP)
1391                 softc->state = ADA_STATE_NORMAL;
1392         else
1393                 xpt_schedule(periph, CAM_PRIORITY_DEV);
1394         return(CAM_REQ_CMP);
1395 }
1396
1397 static void
1398 ada_dsmtrim(struct ada_softc *softc, struct bio *bp, struct ccb_ataio *ataio)
1399 {
1400         struct trim_request *req = &softc->trim_req;
1401         uint64_t lastlba = (uint64_t)-1;
1402         int c, lastcount = 0, off, ranges = 0;
1403
1404         bzero(req, sizeof(*req));
1405         TAILQ_INIT(&req->bps);
1406         do {
1407                 uint64_t lba = bp->bio_pblkno;
1408                 int count = bp->bio_bcount / softc->params.secsize;
1409
1410                 bioq_remove(&softc->trim_queue, bp);
1411
1412                 /* Try to extend the previous range. */
1413                 if (lba == lastlba) {
1414                         c = min(count, ATA_DSM_RANGE_MAX - lastcount);
1415                         lastcount += c;
1416                         off = (ranges - 1) * ATA_DSM_RANGE_SIZE;
1417                         req->data[off + 6] = lastcount & 0xff;
1418                         req->data[off + 7] =
1419                                 (lastcount >> 8) & 0xff;
1420                         count -= c;
1421                         lba += c;
1422                 }
1423
1424                 while (count > 0) {
1425                         c = min(count, ATA_DSM_RANGE_MAX);
1426                         off = ranges * ATA_DSM_RANGE_SIZE;
1427                         req->data[off + 0] = lba & 0xff;
1428                         req->data[off + 1] = (lba >> 8) & 0xff;
1429                         req->data[off + 2] = (lba >> 16) & 0xff;
1430                         req->data[off + 3] = (lba >> 24) & 0xff;
1431                         req->data[off + 4] = (lba >> 32) & 0xff;
1432                         req->data[off + 5] = (lba >> 40) & 0xff;
1433                         req->data[off + 6] = c & 0xff;
1434                         req->data[off + 7] = (c >> 8) & 0xff;
1435                         lba += c;
1436                         count -= c;
1437                         lastcount = c;
1438                         ranges++;
1439                         /*
1440                          * Its the caller's responsibility to ensure the
1441                          * request will fit so we don't need to check for
1442                          * overrun here
1443                          */
1444                 }
1445                 lastlba = lba;
1446                 TAILQ_INSERT_TAIL(&req->bps, bp, bio_queue);
1447                 bp = bioq_first(&softc->trim_queue);
1448                 if (bp == NULL ||
1449                     bp->bio_bcount / softc->params.secsize >
1450                     (softc->trim_max_ranges - ranges) * ATA_DSM_RANGE_MAX)
1451                         break;
1452         } while (1);
1453         cam_fill_ataio(ataio,
1454             ada_retry_count,
1455             adadone,
1456             CAM_DIR_OUT,
1457             0,
1458             req->data,
1459             ((ranges + ATA_DSM_BLK_RANGES - 1) /
1460             ATA_DSM_BLK_RANGES) * ATA_DSM_BLK_SIZE,
1461             ada_default_timeout * 1000);
1462         ata_48bit_cmd(ataio, ATA_DATA_SET_MANAGEMENT,
1463             ATA_DSM_TRIM, 0, (ranges + ATA_DSM_BLK_RANGES -
1464             1) / ATA_DSM_BLK_RANGES);
1465 }
1466
1467 static void
1468 ada_cfaerase(struct ada_softc *softc, struct bio *bp, struct ccb_ataio *ataio)
1469 {
1470         struct trim_request *req = &softc->trim_req;
1471         uint64_t lba = bp->bio_pblkno;
1472         uint16_t count = bp->bio_bcount / softc->params.secsize;
1473
1474         bzero(req, sizeof(*req));
1475         TAILQ_INIT(&req->bps);
1476         bioq_remove(&softc->trim_queue, bp);
1477         TAILQ_INSERT_TAIL(&req->bps, bp, bio_queue);
1478
1479         cam_fill_ataio(ataio,
1480             ada_retry_count,
1481             adadone,
1482             CAM_DIR_NONE,
1483             0,
1484             NULL,
1485             0,
1486             ada_default_timeout*1000);
1487
1488         if (count >= 256)
1489                 count = 0;
1490         ata_28bit_cmd(ataio, ATA_CFA_ERASE, 0, lba, count);
1491 }
1492
1493 static void
1494 adastart(struct cam_periph *periph, union ccb *start_ccb)
1495 {
1496         struct ada_softc *softc = (struct ada_softc *)periph->softc;
1497         struct ccb_ataio *ataio = &start_ccb->ataio;
1498
1499         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("adastart\n"));
1500
1501         switch (softc->state) {
1502         case ADA_STATE_NORMAL:
1503         {
1504                 struct bio *bp;
1505                 u_int8_t tag_code;
1506
1507                 /* Run TRIM if not running yet. */
1508                 if (!softc->trim_running &&
1509                     (bp = bioq_first(&softc->trim_queue)) != 0) {
1510                         if (softc->flags & ADA_FLAG_CAN_TRIM) {
1511                                 ada_dsmtrim(softc, bp, ataio);
1512                         } else if ((softc->flags & ADA_FLAG_CAN_CFA) &&
1513                             !(softc->flags & ADA_FLAG_CAN_48BIT)) {
1514                                 ada_cfaerase(softc, bp, ataio);
1515                         } else {
1516                                 panic("adastart: BIO_DELETE without method, not possible.");
1517                         }
1518                         softc->trim_running = 1;
1519                         start_ccb->ccb_h.ccb_state = ADA_CCB_TRIM;
1520                         start_ccb->ccb_h.flags |= CAM_UNLOCKED;
1521                         goto out;
1522                 }
1523                 /* Run regular command. */
1524                 bp = bioq_first(&softc->bio_queue);
1525                 if (bp == NULL) {
1526                         xpt_release_ccb(start_ccb);
1527                         break;
1528                 }
1529                 bioq_remove(&softc->bio_queue, bp);
1530
1531                 if ((bp->bio_flags & BIO_ORDERED) != 0
1532                  || (softc->flags & ADA_FLAG_NEED_OTAG) != 0) {
1533                         softc->flags &= ~ADA_FLAG_NEED_OTAG;
1534                         softc->flags |= ADA_FLAG_WAS_OTAG;
1535                         tag_code = 0;
1536                 } else {
1537                         tag_code = 1;
1538                 }
1539                 switch (bp->bio_cmd) {
1540                 case BIO_WRITE:
1541                         softc->flags |= ADA_FLAG_DIRTY;
1542                         /* FALLTHROUGH */
1543                 case BIO_READ:
1544                 {
1545                         uint64_t lba = bp->bio_pblkno;
1546                         uint16_t count = bp->bio_bcount / softc->params.secsize;
1547 #ifdef ADA_TEST_FAILURE
1548                         int fail = 0;
1549
1550                         /*
1551                          * Support the failure ioctls.  If the command is a
1552                          * read, and there are pending forced read errors, or
1553                          * if a write and pending write errors, then fail this
1554                          * operation with EIO.  This is useful for testing
1555                          * purposes.  Also, support having every Nth read fail.
1556                          *
1557                          * This is a rather blunt tool.
1558                          */
1559                         if (bp->bio_cmd == BIO_READ) {
1560                                 if (softc->force_read_error) {
1561                                         softc->force_read_error--;
1562                                         fail = 1;
1563                                 }
1564                                 if (softc->periodic_read_error > 0) {
1565                                         if (++softc->periodic_read_count >=
1566                                             softc->periodic_read_error) {
1567                                                 softc->periodic_read_count = 0;
1568                                                 fail = 1;
1569                                         }
1570                                 }
1571                         } else {
1572                                 if (softc->force_write_error) {
1573                                         softc->force_write_error--;
1574                                         fail = 1;
1575                                 }
1576                         }
1577                         if (fail) {
1578                                 bp->bio_error = EIO;
1579                                 bp->bio_flags |= BIO_ERROR;
1580                                 biodone(bp);
1581                                 xpt_release_ccb(start_ccb);
1582                                 adaschedule(periph);
1583                                 return;
1584                         }
1585 #endif
1586                         KASSERT((bp->bio_flags & BIO_UNMAPPED) == 0 ||
1587                             round_page(bp->bio_bcount + bp->bio_ma_offset) /
1588                             PAGE_SIZE == bp->bio_ma_n,
1589                             ("Short bio %p", bp));
1590                         cam_fill_ataio(ataio,
1591                             ada_retry_count,
1592                             adadone,
1593                             (bp->bio_cmd == BIO_READ ? CAM_DIR_IN :
1594                                 CAM_DIR_OUT) | ((bp->bio_flags & BIO_UNMAPPED)
1595                                 != 0 ? CAM_DATA_BIO : 0),
1596                             tag_code,
1597                             ((bp->bio_flags & BIO_UNMAPPED) != 0) ? (void *)bp :
1598                                 bp->bio_data,
1599                             bp->bio_bcount,
1600                             ada_default_timeout*1000);
1601
1602                         if ((softc->flags & ADA_FLAG_CAN_NCQ) && tag_code) {
1603                                 if (bp->bio_cmd == BIO_READ) {
1604                                         ata_ncq_cmd(ataio, ATA_READ_FPDMA_QUEUED,
1605                                             lba, count);
1606                                 } else {
1607                                         ata_ncq_cmd(ataio, ATA_WRITE_FPDMA_QUEUED,
1608                                             lba, count);
1609                                 }
1610                         } else if ((softc->flags & ADA_FLAG_CAN_48BIT) &&
1611                             (lba + count >= ATA_MAX_28BIT_LBA ||
1612                             count > 256)) {
1613                                 if (softc->flags & ADA_FLAG_CAN_DMA48) {
1614                                         if (bp->bio_cmd == BIO_READ) {
1615                                                 ata_48bit_cmd(ataio, ATA_READ_DMA48,
1616                                                     0, lba, count);
1617                                         } else {
1618                                                 ata_48bit_cmd(ataio, ATA_WRITE_DMA48,
1619                                                     0, lba, count);
1620                                         }
1621                                 } else {
1622                                         if (bp->bio_cmd == BIO_READ) {
1623                                                 ata_48bit_cmd(ataio, ATA_READ_MUL48,
1624                                                     0, lba, count);
1625                                         } else {
1626                                                 ata_48bit_cmd(ataio, ATA_WRITE_MUL48,
1627                                                     0, lba, count);
1628                                         }
1629                                 }
1630                         } else {
1631                                 if (count == 256)
1632                                         count = 0;
1633                                 if (softc->flags & ADA_FLAG_CAN_DMA) {
1634                                         if (bp->bio_cmd == BIO_READ) {
1635                                                 ata_28bit_cmd(ataio, ATA_READ_DMA,
1636                                                     0, lba, count);
1637                                         } else {
1638                                                 ata_28bit_cmd(ataio, ATA_WRITE_DMA,
1639                                                     0, lba, count);
1640                                         }
1641                                 } else {
1642                                         if (bp->bio_cmd == BIO_READ) {
1643                                                 ata_28bit_cmd(ataio, ATA_READ_MUL,
1644                                                     0, lba, count);
1645                                         } else {
1646                                                 ata_28bit_cmd(ataio, ATA_WRITE_MUL,
1647                                                     0, lba, count);
1648                                         }
1649                                 }
1650                         }
1651                         break;
1652                 }
1653                 case BIO_FLUSH:
1654                         cam_fill_ataio(ataio,
1655                             1,
1656                             adadone,
1657                             CAM_DIR_NONE,
1658                             0,
1659                             NULL,
1660                             0,
1661                             ada_default_timeout*1000);
1662
1663                         if (softc->flags & ADA_FLAG_CAN_48BIT)
1664                                 ata_48bit_cmd(ataio, ATA_FLUSHCACHE48, 0, 0, 0);
1665                         else
1666                                 ata_28bit_cmd(ataio, ATA_FLUSHCACHE, 0, 0, 0);
1667                         break;
1668                 }
1669                 start_ccb->ccb_h.ccb_state = ADA_CCB_BUFFER_IO;
1670                 start_ccb->ccb_h.flags |= CAM_UNLOCKED;
1671 out:
1672                 start_ccb->ccb_h.ccb_bp = bp;
1673                 softc->outstanding_cmds++;
1674                 softc->refcount++;
1675                 cam_periph_unlock(periph);
1676                 xpt_action(start_ccb);
1677                 cam_periph_lock(periph);
1678                 softc->refcount--;
1679
1680                 /* May have more work to do, so ensure we stay scheduled */
1681                 adaschedule(periph);
1682                 break;
1683         }
1684         case ADA_STATE_RAHEAD:
1685         case ADA_STATE_WCACHE:
1686         {
1687                 cam_fill_ataio(ataio,
1688                     1,
1689                     adadone,
1690                     CAM_DIR_NONE,
1691                     0,
1692                     NULL,
1693                     0,
1694                     ada_default_timeout*1000);
1695
1696                 if (softc->state == ADA_STATE_RAHEAD) {
1697                         ata_28bit_cmd(ataio, ATA_SETFEATURES, ADA_RA ?
1698                             ATA_SF_ENAB_RCACHE : ATA_SF_DIS_RCACHE, 0, 0);
1699                         start_ccb->ccb_h.ccb_state = ADA_CCB_RAHEAD;
1700                 } else {
1701                         ata_28bit_cmd(ataio, ATA_SETFEATURES, ADA_WC ?
1702                             ATA_SF_ENAB_WCACHE : ATA_SF_DIS_WCACHE, 0, 0);
1703                         start_ccb->ccb_h.ccb_state = ADA_CCB_WCACHE;
1704                 }
1705                 start_ccb->ccb_h.flags |= CAM_DEV_QFREEZE;
1706                 xpt_action(start_ccb);
1707                 break;
1708         }
1709         }
1710 }
1711
1712 static void
1713 adadone(struct cam_periph *periph, union ccb *done_ccb)
1714 {
1715         struct ada_softc *softc;
1716         struct ccb_ataio *ataio;
1717         struct ccb_getdev *cgd;
1718         struct cam_path *path;
1719         int state;
1720
1721         softc = (struct ada_softc *)periph->softc;
1722         ataio = &done_ccb->ataio;
1723         path = done_ccb->ccb_h.path;
1724
1725         CAM_DEBUG(path, CAM_DEBUG_TRACE, ("adadone\n"));
1726
1727         state = ataio->ccb_h.ccb_state & ADA_CCB_TYPE_MASK;
1728         switch (state) {
1729         case ADA_CCB_BUFFER_IO:
1730         case ADA_CCB_TRIM:
1731         {
1732                 struct bio *bp;
1733                 int error;
1734
1735                 cam_periph_lock(periph);
1736                 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1737                         error = adaerror(done_ccb, 0, 0);
1738                         if (error == ERESTART) {
1739                                 /* A retry was scheduled, so just return. */
1740                                 cam_periph_unlock(periph);
1741                                 return;
1742                         }
1743                         if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
1744                                 cam_release_devq(path,
1745                                                  /*relsim_flags*/0,
1746                                                  /*reduction*/0,
1747                                                  /*timeout*/0,
1748                                                  /*getcount_only*/0);
1749                 } else {
1750                         if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
1751                                 panic("REQ_CMP with QFRZN");
1752                         error = 0;
1753                 }
1754                 bp = (struct bio *)done_ccb->ccb_h.ccb_bp;
1755                 bp->bio_error = error;
1756                 if (error != 0) {
1757                         bp->bio_resid = bp->bio_bcount;
1758                         bp->bio_flags |= BIO_ERROR;
1759                 } else {
1760                         if (state == ADA_CCB_TRIM)
1761                                 bp->bio_resid = 0;
1762                         else
1763                                 bp->bio_resid = ataio->resid;
1764                         if (bp->bio_resid > 0)
1765                                 bp->bio_flags |= BIO_ERROR;
1766                 }
1767                 softc->outstanding_cmds--;
1768                 if (softc->outstanding_cmds == 0)
1769                         softc->flags |= ADA_FLAG_WAS_OTAG;
1770                 xpt_release_ccb(done_ccb);
1771                 if (state == ADA_CCB_TRIM) {
1772                         TAILQ_HEAD(, bio) queue;
1773                         struct bio *bp1;
1774
1775                         TAILQ_INIT(&queue);
1776                         TAILQ_CONCAT(&queue, &softc->trim_req.bps, bio_queue);
1777                         softc->trim_running = 0;
1778                         adaschedule(periph);
1779                         cam_periph_unlock(periph);
1780                         while ((bp1 = TAILQ_FIRST(&queue)) != NULL) {
1781                                 TAILQ_REMOVE(&queue, bp1, bio_queue);
1782                                 bp1->bio_error = error;
1783                                 if (error != 0) {
1784                                         bp1->bio_flags |= BIO_ERROR;
1785                                         bp1->bio_resid = bp1->bio_bcount;
1786                                 } else
1787                                         bp1->bio_resid = 0;
1788                                 biodone(bp1);
1789                         }
1790                 } else {
1791                         cam_periph_unlock(periph);
1792                         biodone(bp);
1793                 }
1794                 return;
1795         }
1796         case ADA_CCB_RAHEAD:
1797         {
1798                 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1799                         if (adaerror(done_ccb, 0, 0) == ERESTART) {
1800 out:
1801                                 /* Drop freeze taken due to CAM_DEV_QFREEZE */
1802                                 cam_release_devq(path, 0, 0, 0, FALSE);
1803                                 return;
1804                         } else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
1805                                 cam_release_devq(path,
1806                                     /*relsim_flags*/0,
1807                                     /*reduction*/0,
1808                                     /*timeout*/0,
1809                                     /*getcount_only*/0);
1810                         }
1811                 }
1812
1813                 /*
1814                  * Since our peripheral may be invalidated by an error
1815                  * above or an external event, we must release our CCB
1816                  * before releasing the reference on the peripheral.
1817                  * The peripheral will only go away once the last reference
1818                  * is removed, and we need it around for the CCB release
1819                  * operation.
1820                  */
1821                 cgd = (struct ccb_getdev *)done_ccb;
1822                 xpt_setup_ccb(&cgd->ccb_h, path, CAM_PRIORITY_NORMAL);
1823                 cgd->ccb_h.func_code = XPT_GDEV_TYPE;
1824                 xpt_action((union ccb *)cgd);
1825                 if (ADA_WC >= 0 &&
1826                     cgd->ident_data.support.command1 & ATA_SUPPORT_WRITECACHE) {
1827                         softc->state = ADA_STATE_WCACHE;
1828                         xpt_release_ccb(done_ccb);
1829                         xpt_schedule(periph, CAM_PRIORITY_DEV);
1830                         goto out;
1831                 }
1832                 softc->state = ADA_STATE_NORMAL;
1833                 xpt_release_ccb(done_ccb);
1834                 /* Drop freeze taken due to CAM_DEV_QFREEZE */
1835                 cam_release_devq(path, 0, 0, 0, FALSE);
1836                 adaschedule(periph);
1837                 cam_periph_release_locked(periph);
1838                 return;
1839         }
1840         case ADA_CCB_WCACHE:
1841         {
1842                 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1843                         if (adaerror(done_ccb, 0, 0) == ERESTART) {
1844                                 goto out;
1845                         } else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
1846                                 cam_release_devq(path,
1847                                     /*relsim_flags*/0,
1848                                     /*reduction*/0,
1849                                     /*timeout*/0,
1850                                     /*getcount_only*/0);
1851                         }
1852                 }
1853
1854                 softc->state = ADA_STATE_NORMAL;
1855                 /*
1856                  * Since our peripheral may be invalidated by an error
1857                  * above or an external event, we must release our CCB
1858                  * before releasing the reference on the peripheral.
1859                  * The peripheral will only go away once the last reference
1860                  * is removed, and we need it around for the CCB release
1861                  * operation.
1862                  */
1863                 xpt_release_ccb(done_ccb);
1864                 /* Drop freeze taken due to CAM_DEV_QFREEZE */
1865                 cam_release_devq(path, 0, 0, 0, FALSE);
1866                 adaschedule(periph);
1867                 cam_periph_release_locked(periph);
1868                 return;
1869         }
1870         case ADA_CCB_DUMP:
1871                 /* No-op.  We're polling */
1872                 return;
1873         default:
1874                 break;
1875         }
1876         xpt_release_ccb(done_ccb);
1877 }
1878
1879 static int
1880 adaerror(union ccb *ccb, u_int32_t cam_flags, u_int32_t sense_flags)
1881 {
1882
1883         return(cam_periph_error(ccb, cam_flags, sense_flags, NULL));
1884 }
1885
1886 static void
1887 adagetparams(struct cam_periph *periph, struct ccb_getdev *cgd)
1888 {
1889         struct ada_softc *softc = (struct ada_softc *)periph->softc;
1890         struct disk_params *dp = &softc->params;
1891         u_int64_t lbasize48;
1892         u_int32_t lbasize;
1893
1894         dp->secsize = ata_logical_sector_size(&cgd->ident_data);
1895         if ((cgd->ident_data.atavalid & ATA_FLAG_54_58) &&
1896                 cgd->ident_data.current_heads && cgd->ident_data.current_sectors) {
1897                 dp->heads = cgd->ident_data.current_heads;
1898                 dp->secs_per_track = cgd->ident_data.current_sectors;
1899                 dp->cylinders = cgd->ident_data.cylinders;
1900                 dp->sectors = (u_int32_t)cgd->ident_data.current_size_1 |
1901                           ((u_int32_t)cgd->ident_data.current_size_2 << 16);
1902         } else {
1903                 dp->heads = cgd->ident_data.heads;
1904                 dp->secs_per_track = cgd->ident_data.sectors;
1905                 dp->cylinders = cgd->ident_data.cylinders;
1906                 dp->sectors = cgd->ident_data.cylinders * dp->heads * dp->secs_per_track;
1907         }
1908         lbasize = (u_int32_t)cgd->ident_data.lba_size_1 |
1909                   ((u_int32_t)cgd->ident_data.lba_size_2 << 16);
1910
1911         /* use the 28bit LBA size if valid or bigger than the CHS mapping */
1912         if (cgd->ident_data.cylinders == 16383 || dp->sectors < lbasize)
1913                 dp->sectors = lbasize;
1914
1915         /* use the 48bit LBA size if valid */
1916         lbasize48 = ((u_int64_t)cgd->ident_data.lba_size48_1) |
1917                     ((u_int64_t)cgd->ident_data.lba_size48_2 << 16) |
1918                     ((u_int64_t)cgd->ident_data.lba_size48_3 << 32) |
1919                     ((u_int64_t)cgd->ident_data.lba_size48_4 << 48);
1920         if ((cgd->ident_data.support.command2 & ATA_SUPPORT_ADDRESS48) &&
1921             lbasize48 > ATA_MAX_28BIT_LBA)
1922                 dp->sectors = lbasize48;
1923 }
1924
1925 static void
1926 adasendorderedtag(void *arg)
1927 {
1928         struct ada_softc *softc = arg;
1929
1930         if (ada_send_ordered) {
1931                 if (softc->outstanding_cmds > 0) {
1932                         if ((softc->flags & ADA_FLAG_WAS_OTAG) == 0)
1933                                 softc->flags |= ADA_FLAG_NEED_OTAG;
1934                         softc->flags &= ~ADA_FLAG_WAS_OTAG;
1935                 }
1936         }
1937         /* Queue us up again */
1938         callout_reset(&softc->sendordered_c,
1939             (ada_default_timeout * hz) / ADA_ORDEREDTAG_INTERVAL,
1940             adasendorderedtag, softc);
1941 }
1942
1943 /*
1944  * Step through all ADA peripheral drivers, and if the device is still open,
1945  * sync the disk cache to physical media.
1946  */
1947 static void
1948 adaflush(void)
1949 {
1950         struct cam_periph *periph;
1951         struct ada_softc *softc;
1952         union ccb *ccb;
1953         int error;
1954
1955         CAM_PERIPH_FOREACH(periph, &adadriver) {
1956                 softc = (struct ada_softc *)periph->softc;
1957                 if (SCHEDULER_STOPPED()) {
1958                         /* If we paniced with the lock held, do not recurse. */
1959                         if (!cam_periph_owned(periph) &&
1960                             (softc->flags & ADA_FLAG_OPEN)) {
1961                                 adadump(softc->disk, NULL, 0, 0, 0);
1962                         }
1963                         continue;
1964                 }
1965                 cam_periph_lock(periph);
1966                 /*
1967                  * We only sync the cache if the drive is still open, and
1968                  * if the drive is capable of it..
1969                  */
1970                 if (((softc->flags & ADA_FLAG_OPEN) == 0) ||
1971                     (softc->flags & ADA_FLAG_CAN_FLUSHCACHE) == 0) {
1972                         cam_periph_unlock(periph);
1973                         continue;
1974                 }
1975
1976                 ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL);
1977                 cam_fill_ataio(&ccb->ataio,
1978                                     0,
1979                                     adadone,
1980                                     CAM_DIR_NONE,
1981                                     0,
1982                                     NULL,
1983                                     0,
1984                                     ada_default_timeout*1000);
1985                 if (softc->flags & ADA_FLAG_CAN_48BIT)
1986                         ata_48bit_cmd(&ccb->ataio, ATA_FLUSHCACHE48, 0, 0, 0);
1987                 else
1988                         ata_28bit_cmd(&ccb->ataio, ATA_FLUSHCACHE, 0, 0, 0);
1989
1990                 error = cam_periph_runccb(ccb, adaerror, /*cam_flags*/0,
1991                     /*sense_flags*/ SF_NO_RECOVERY | SF_NO_RETRY,
1992                     softc->disk->d_devstat);
1993                 if (error != 0)
1994                         xpt_print(periph->path, "Synchronize cache failed\n");
1995                 xpt_release_ccb(ccb);
1996                 cam_periph_unlock(periph);
1997         }
1998 }
1999
2000 static void
2001 adaspindown(uint8_t cmd, int flags)
2002 {
2003         struct cam_periph *periph;
2004         struct ada_softc *softc;
2005         union ccb *ccb;
2006         int error;
2007
2008         CAM_PERIPH_FOREACH(periph, &adadriver) {
2009                 /* If we paniced with lock held - not recurse here. */
2010                 if (cam_periph_owned(periph))
2011                         continue;
2012                 cam_periph_lock(periph);
2013                 softc = (struct ada_softc *)periph->softc;
2014                 /*
2015                  * We only spin-down the drive if it is capable of it..
2016                  */
2017                 if ((softc->flags & ADA_FLAG_CAN_POWERMGT) == 0) {
2018                         cam_periph_unlock(periph);
2019                         continue;
2020                 }
2021
2022                 if (bootverbose)
2023                         xpt_print(periph->path, "spin-down\n");
2024
2025                 ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL);
2026                 cam_fill_ataio(&ccb->ataio,
2027                                     0,
2028                                     adadone,
2029                                     CAM_DIR_NONE | flags,
2030                                     0,
2031                                     NULL,
2032                                     0,
2033                                     ada_default_timeout*1000);
2034                 ata_28bit_cmd(&ccb->ataio, cmd, 0, 0, 0);
2035
2036                 error = cam_periph_runccb(ccb, adaerror, /*cam_flags*/0,
2037                     /*sense_flags*/ SF_NO_RECOVERY | SF_NO_RETRY,
2038                     softc->disk->d_devstat);
2039                 if (error != 0)
2040                         xpt_print(periph->path, "Spin-down disk failed\n");
2041                 xpt_release_ccb(ccb);
2042                 cam_periph_unlock(periph);
2043         }
2044 }
2045
2046 static void
2047 adashutdown(void *arg, int howto)
2048 {
2049
2050         adaflush();
2051         if (ada_spindown_shutdown != 0 &&
2052             (howto & (RB_HALT | RB_POWEROFF)) != 0)
2053                 adaspindown(ATA_STANDBY_IMMEDIATE, 0);
2054 }
2055
2056 static void
2057 adasuspend(void *arg)
2058 {
2059
2060         adaflush();
2061         if (ada_spindown_suspend != 0)
2062                 adaspindown(ATA_SLEEP, CAM_DEV_QFREEZE);
2063 }
2064
2065 static void
2066 adaresume(void *arg)
2067 {
2068         struct cam_periph *periph;
2069         struct ada_softc *softc;
2070
2071         if (ada_spindown_suspend == 0)
2072                 return;
2073
2074         CAM_PERIPH_FOREACH(periph, &adadriver) {
2075                 cam_periph_lock(periph);
2076                 softc = (struct ada_softc *)periph->softc;
2077                 /*
2078                  * We only spin-down the drive if it is capable of it..
2079                  */
2080                 if ((softc->flags & ADA_FLAG_CAN_POWERMGT) == 0) {
2081                         cam_periph_unlock(periph);
2082                         continue;
2083                 }
2084
2085                 if (bootverbose)
2086                         xpt_print(periph->path, "resume\n");
2087
2088                 /*
2089                  * Drop freeze taken due to CAM_DEV_QFREEZE flag set on
2090                  * sleep request.
2091                  */
2092                 cam_release_devq(periph->path,
2093                          /*relsim_flags*/0,
2094                          /*openings*/0,
2095                          /*timeout*/0,
2096                          /*getcount_only*/0);
2097
2098                 cam_periph_unlock(periph);
2099         }
2100 }
2101
2102 #endif /* _KERNEL */