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 #include "opt_ata.h"
  32
  33 #include <sys/param.h>
  34
  35 #ifdef _KERNEL
  36 #include <sys/systm.h>
  37 #include <sys/kernel.h>
  38 #include <sys/bio.h>
  39 #include <sys/sysctl.h>
  40 #include <sys/taskqueue.h>
  41 #include <sys/lock.h>
  42 #include <sys/mutex.h>
  43 #include <sys/conf.h>
  44 #include <sys/devicestat.h>
  45 #include <sys/eventhandler.h>
  46 #include <sys/malloc.h>
  47 #include <sys/cons.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_PACK_INVALID   = 0x001,
  79         ADA_FLAG_CAN_48BIT      = 0x002,
  80         ADA_FLAG_CAN_FLUSHCACHE = 0x004,
  81         ADA_FLAG_CAN_NCQ        = 0x008,
  82         ADA_FLAG_CAN_DMA        = 0x010,
  83         ADA_FLAG_NEED_OTAG      = 0x020,
  84         ADA_FLAG_WENT_IDLE      = 0x040,
  85         ADA_FLAG_CAN_TRIM       = 0x080,
  86         ADA_FLAG_OPEN           = 0x100,
  87         ADA_FLAG_SCTX_INIT      = 0x200,
  88         ADA_FLAG_CAN_CFA        = 0x400,
  89         ADA_FLAG_CAN_POWERMGT   = 0x800
  90 } ada_flags;
  91
  92 typedef enum {
  93         ADA_Q_NONE              = 0x00,
  94         ADA_Q_4K                = 0x01,
  95 } ada_quirks;
  96
  97 typedef enum {
  98         ADA_CCB_RAHEAD          = 0x01,
  99         ADA_CCB_WCACHE          = 0x02,
 100         ADA_CCB_BUFFER_IO       = 0x03,
 101         ADA_CCB_WAITING         = 0x04,
 102         ADA_CCB_DUMP            = 0x05,
 103         ADA_CCB_TRIM            = 0x06,
 104         ADA_CCB_TYPE_MASK       = 0x0F,
 105 } ada_ccb_state;
 106
 107 /* Offsets into our private area for storing information */
 108 #define ccb_state       ppriv_field0
 109 #define ccb_bp          ppriv_ptr1
 110
 111 struct disk_params {
 112         u_int8_t  heads;
 113         u_int8_t  secs_per_track;
 114         u_int32_t cylinders;
 115         u_int32_t secsize;      /* Number of bytes/logical sector */
 116         u_int64_t sectors;      /* Total number sectors */
 117 };
 118
 119 #define TRIM_MAX_BLOCKS 8
 120 #define TRIM_MAX_RANGES (TRIM_MAX_BLOCKS * 64)
 121 #define TRIM_MAX_BIOS   (TRIM_MAX_RANGES * 4)
 122 struct trim_request {
 123         uint8_t         data[TRIM_MAX_RANGES * 8];
 124         struct bio      *bps[TRIM_MAX_BIOS];
 125 };
 126
 127 struct ada_softc {
 128         struct   bio_queue_head bio_queue;
 129         struct   bio_queue_head trim_queue;
 130         ada_state state;
 131         ada_flags flags;
 132         ada_quirks quirks;
 133         int      ordered_tag_count;
 134         int      outstanding_cmds;
 135         int      trim_max_ranges;
 136         int      trim_running;
 137         int      read_ahead;
 138         int      write_cache;
 139 #ifdef ADA_TEST_FAILURE
 140         int      force_read_error;
 141         int      force_write_error;
 142         int      periodic_read_error;
 143         int      periodic_read_count;
 144 #endif
 145         struct   disk_params params;
 146         struct   disk *disk;
 147         struct task             sysctl_task;
 148         struct sysctl_ctx_list  sysctl_ctx;
 149         struct sysctl_oid       *sysctl_tree;
 150         struct callout          sendordered_c;
 151         struct trim_request     trim_req;
 152 };
 153
 154 struct ada_quirk_entry {
 155         struct scsi_inquiry_pattern inq_pat;
 156         ada_quirks quirks;
 157 };
 158
 159 static struct ada_quirk_entry ada_quirk_table[] =
 160 {
 161         {
 162                 /* Hitachi Advanced Format (4k) drives */
 163                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "Hitachi H??????????E3*", "*" },
 164                 /*quirks*/ADA_Q_4K
 165         },
 166         {
 167                 /* Samsung Advanced Format (4k) drives */
 168                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "SAMSUNG HD155UI*", "*" },
 169                 /*quirks*/ADA_Q_4K
 170         },
 171         {
 172                 /* Samsung Advanced Format (4k) drives */
 173                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "SAMSUNG HD204UI*", "*" },
 174                 /*quirks*/ADA_Q_4K
 175         },
 176         {
 177                 /* Seagate Barracuda Green Advanced Format (4k) drives */
 178                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "ST????DL*", "*" },
 179                 /*quirks*/ADA_Q_4K
 180         },
 181         {
 182                 /* Seagate Barracuda Advanced Format (4k) drives */
 183                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "ST???DM*", "*" },
 184                 /*quirks*/ADA_Q_4K
 185         },
 186         {
 187                 /* Seagate Barracuda Advanced Format (4k) drives */
 188                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "ST????DM*", "*" },
 189                 /*quirks*/ADA_Q_4K
 190         },
 191         {
 192                 /* Seagate Momentus Advanced Format (4k) drives */
 193                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "ST9500423AS*", "*" },
 194                 /*quirks*/ADA_Q_4K
 195         },
 196         {
 197                 /* Seagate Momentus Advanced Format (4k) drives */
 198                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "ST9500424AS*", "*" },
 199                 /*quirks*/ADA_Q_4K
 200         },
 201         {
 202                 /* Seagate Momentus Advanced Format (4k) drives */
 203                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "ST9640423AS*", "*" },
 204                 /*quirks*/ADA_Q_4K
 205         },
 206         {
 207                 /* Seagate Momentus Advanced Format (4k) drives */
 208                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "ST9640424AS*", "*" },
 209                 /*quirks*/ADA_Q_4K
 210         },
 211         {
 212                 /* Seagate Momentus Advanced Format (4k) drives */
 213                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "ST9750420AS*", "*" },
 214                 /*quirks*/ADA_Q_4K
 215         },
 216         {
 217                 /* Seagate Momentus Advanced Format (4k) drives */
 218                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "ST9750422AS*", "*" },
 219                 /*quirks*/ADA_Q_4K
 220         },
 221         {
 222                 /* Seagate Momentus Advanced Format (4k) drives */
 223                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "ST9750423AS*", "*" },
 224                 /*quirks*/ADA_Q_4K
 225         },
 226         {
 227                 /* Seagate Momentus Thin Advanced Format (4k) drives */
 228                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "ST???LT*", "*" },
 229                 /*quirks*/ADA_Q_4K
 230         },
 231         {
 232                 /* WDC Caviar Green Advanced Format (4k) drives */
 233                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "WDC WD????RS*", "*" },
 234                 /*quirks*/ADA_Q_4K
 235         },
 236         {
 237                 /* WDC Caviar Green Advanced Format (4k) drives */
 238                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "WDC WD????RX*", "*" },
 239                 /*quirks*/ADA_Q_4K
 240         },
 241         {
 242                 /* WDC Caviar Green Advanced Format (4k) drives */
 243                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "WDC WD??????RS*", "*" },
 244                 /*quirks*/ADA_Q_4K
 245         },
 246         {
 247                 /* WDC Caviar Green Advanced Format (4k) drives */
 248                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "WDC WD??????RX*", "*" },
 249                 /*quirks*/ADA_Q_4K
 250         },
 251         {
 252                 /* WDC Scorpio Black Advanced Format (4k) drives */
 253                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "WDC WD???PKT*", "*" },
 254                 /*quirks*/ADA_Q_4K
 255         },
 256         {
 257                 /* WDC Scorpio Black Advanced Format (4k) drives */
 258                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "WDC WD?????PKT*", "*" },
 259                 /*quirks*/ADA_Q_4K
 260         },
 261         {
 262                 /* WDC Scorpio Blue Advanced Format (4k) drives */
 263                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "WDC WD???PVT*", "*" },
 264                 /*quirks*/ADA_Q_4K
 265         },
 266         {
 267                 /* WDC Scorpio Blue Advanced Format (4k) drives */
 268                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "WDC WD?????PVT*", "*" },
 269                 /*quirks*/ADA_Q_4K
 270         },
 271         {
 272                 /* Default */
 273                 {
 274                   T_ANY, SIP_MEDIA_REMOVABLE|SIP_MEDIA_FIXED,
 275                   /*vendor*/"*", /*product*/"*", /*revision*/"*"
 276                 },
 277                 /*quirks*/0
 278         },
 279 };
 280
 281 static  disk_strategy_t adastrategy;
 282 static  dumper_t        adadump;
 283 static  periph_init_t   adainit;
 284 static  void            adaasync(void *callback_arg, u_int32_t code,
 285                                 struct cam_path *path, void *arg);
 286 static  void            adasysctlinit(void *context, int pending);
 287 static  periph_ctor_t   adaregister;
 288 static  periph_dtor_t   adacleanup;
 289 static  periph_start_t  adastart;
 290 static  periph_oninv_t  adaoninvalidate;
 291 static  void            adadone(struct cam_periph *periph,
 292                                union ccb *done_ccb);
 293 static  int             adaerror(union ccb *ccb, u_int32_t cam_flags,
 294                                 u_int32_t sense_flags);
 295 static void             adagetparams(struct cam_periph *periph,
 296                                 struct ccb_getdev *cgd);
 297 static timeout_t        adasendorderedtag;
 298 static void             adashutdown(void *arg, int howto);
 299 static void             adasuspend(void *arg);
 300 static void             adaresume(void *arg);
 301
 302 #ifndef ADA_DEFAULT_LEGACY_ALIASES
 303 #ifdef ATA_CAM
 304 #define ADA_DEFAULT_LEGACY_ALIASES      1
 305 #else
 306 #define ADA_DEFAULT_LEGACY_ALIASES      0
 307 #endif
 308 #endif
 309
 310 #ifndef ADA_DEFAULT_TIMEOUT
 311 #define ADA_DEFAULT_TIMEOUT 30  /* Timeout in seconds */
 312 #endif
 313
 314 #ifndef ADA_DEFAULT_RETRY
 315 #define ADA_DEFAULT_RETRY       4
 316 #endif
 317
 318 #ifndef ADA_DEFAULT_SEND_ORDERED
 319 #define ADA_DEFAULT_SEND_ORDERED        1
 320 #endif
 321
 322 #ifndef ADA_DEFAULT_SPINDOWN_SHUTDOWN
 323 #define ADA_DEFAULT_SPINDOWN_SHUTDOWN   1
 324 #endif
 325
 326 #ifndef ADA_DEFAULT_SPINDOWN_SUSPEND
 327 #define ADA_DEFAULT_SPINDOWN_SUSPEND    1
 328 #endif
 329
 330 #ifndef ADA_DEFAULT_READ_AHEAD
 331 #define ADA_DEFAULT_READ_AHEAD  1
 332 #endif
 333
 334 #ifndef ADA_DEFAULT_WRITE_CACHE
 335 #define ADA_DEFAULT_WRITE_CACHE 1
 336 #endif
 337
 338 #define ADA_RA  (softc->read_ahead >= 0 ? \
 339                  softc->read_ahead : ada_read_ahead)
 340 #define ADA_WC  (softc->write_cache >= 0 ? \
 341                  softc->write_cache : ada_write_cache)
 342
 343 /*
 344  * Most platforms map firmware geometry to actual, but some don't.  If
 345  * not overridden, default to nothing.
 346  */
 347 #ifndef ata_disk_firmware_geom_adjust
 348 #define ata_disk_firmware_geom_adjust(disk)
 349 #endif
 350
 351 static int ada_legacy_aliases = ADA_DEFAULT_LEGACY_ALIASES;
 352 static int ada_retry_count = ADA_DEFAULT_RETRY;
 353 static int ada_default_timeout = ADA_DEFAULT_TIMEOUT;
 354 static int ada_send_ordered = ADA_DEFAULT_SEND_ORDERED;
 355 static int ada_spindown_shutdown = ADA_DEFAULT_SPINDOWN_SHUTDOWN;
 356 static int ada_spindown_suspend = ADA_DEFAULT_SPINDOWN_SUSPEND;
 357 static int ada_read_ahead = ADA_DEFAULT_READ_AHEAD;
 358 static int ada_write_cache = ADA_DEFAULT_WRITE_CACHE;
 359
 360 static SYSCTL_NODE(_kern_cam, OID_AUTO, ada, CTLFLAG_RD, 0,
 361             "CAM Direct Access Disk driver");
 362 SYSCTL_INT(_kern_cam_ada, OID_AUTO, legacy_aliases, CTLFLAG_RW,
 363            &ada_legacy_aliases, 0, "Create legacy-like device aliases");
 364 TUNABLE_INT("kern.cam.ada.legacy_aliases", &ada_legacy_aliases);
 365 SYSCTL_INT(_kern_cam_ada, OID_AUTO, retry_count, CTLFLAG_RW,
 366            &ada_retry_count, 0, "Normal I/O retry count");
 367 TUNABLE_INT("kern.cam.ada.retry_count", &ada_retry_count);
 368 SYSCTL_INT(_kern_cam_ada, OID_AUTO, default_timeout, CTLFLAG_RW,
 369            &ada_default_timeout, 0, "Normal I/O timeout (in seconds)");
 370 TUNABLE_INT("kern.cam.ada.default_timeout", &ada_default_timeout);
 371 SYSCTL_INT(_kern_cam_ada, OID_AUTO, ada_send_ordered, CTLFLAG_RW,
 372            &ada_send_ordered, 0, "Send Ordered Tags");
 373 TUNABLE_INT("kern.cam.ada.ada_send_ordered", &ada_send_ordered);
 374 SYSCTL_INT(_kern_cam_ada, OID_AUTO, spindown_shutdown, CTLFLAG_RW,
 375            &ada_spindown_shutdown, 0, "Spin down upon shutdown");
 376 TUNABLE_INT("kern.cam.ada.spindown_shutdown", &ada_spindown_shutdown);
 377 SYSCTL_INT(_kern_cam_ada, OID_AUTO, spindown_suspend, CTLFLAG_RW,
 378            &ada_spindown_suspend, 0, "Spin down upon suspend");
 379 TUNABLE_INT("kern.cam.ada.spindown_suspend", &ada_spindown_suspend);
 380 SYSCTL_INT(_kern_cam_ada, OID_AUTO, read_ahead, CTLFLAG_RW,
 381            &ada_read_ahead, 0, "Enable disk read-ahead");
 382 TUNABLE_INT("kern.cam.ada.read_ahead", &ada_read_ahead);
 383 SYSCTL_INT(_kern_cam_ada, OID_AUTO, write_cache, CTLFLAG_RW,
 384            &ada_write_cache, 0, "Enable disk write cache");
 385 TUNABLE_INT("kern.cam.ada.write_cache", &ada_write_cache);
 386
 387 /*
 388  * ADA_ORDEREDTAG_INTERVAL determines how often, relative
 389  * to the default timeout, we check to see whether an ordered
 390  * tagged transaction is appropriate to prevent simple tag
 391  * starvation.  Since we'd like to ensure that there is at least
 392  * 1/2 of the timeout length left for a starved transaction to
 393  * complete after we've sent an ordered tag, we must poll at least
 394  * four times in every timeout period.  This takes care of the worst
 395  * case where a starved transaction starts during an interval that
 396  * meets the requirement "don't send an ordered tag" test so it takes
 397  * us two intervals to determine that a tag must be sent.
 398  */
 399 #ifndef ADA_ORDEREDTAG_INTERVAL
 400 #define ADA_ORDEREDTAG_INTERVAL 4
 401 #endif
 402
 403 static struct periph_driver adadriver =
 404 {
 405         adainit, "ada",
 406         TAILQ_HEAD_INITIALIZER(adadriver.units), /* generation */ 0
 407 };
 408
 409 PERIPHDRIVER_DECLARE(ada, adadriver);
 410
 411 static MALLOC_DEFINE(M_ATADA, "ata_da", "ata_da buffers");
 412
 413 static int
 414 adaopen(struct disk *dp)
 415 {
 416         struct cam_periph *periph;
 417         struct ada_softc *softc;
 418         int error;
 419
 420         periph = (struct cam_periph *)dp->d_drv1;
 421         if (periph == NULL) {
 422                 return (ENXIO);
 423         }
 424
 425         if (cam_periph_acquire(periph) != CAM_REQ_CMP) {
 426                 return(ENXIO);
 427         }
 428
 429         cam_periph_lock(periph);
 430         if ((error = cam_periph_hold(periph, PRIBIO|PCATCH)) != 0) {
 431                 cam_periph_unlock(periph);
 432                 cam_periph_release(periph);
 433                 return (error);
 434         }
 435
 436         softc = (struct ada_softc *)periph->softc;
 437         softc->flags |= ADA_FLAG_OPEN;
 438
 439         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE,
 440             ("adaopen: disk=%s%d (unit %d)\n", dp->d_name, dp->d_unit,
 441              periph->unit_number));
 442
 443         if ((softc->flags & ADA_FLAG_PACK_INVALID) != 0) {
 444                 /* Invalidate our pack information. */
 445                 softc->flags &= ~ADA_FLAG_PACK_INVALID;
 446         }
 447
 448         cam_periph_unhold(periph);
 449         cam_periph_unlock(periph);
 450         return (0);
 451 }
 452
 453 static int
 454 adaclose(struct disk *dp)
 455 {
 456         struct  cam_periph *periph;
 457         struct  ada_softc *softc;
 458         union ccb *ccb;
 459
 460         periph = (struct cam_periph *)dp->d_drv1;
 461         if (periph == NULL)
 462                 return (ENXIO);
 463
 464         cam_periph_lock(periph);
 465         if (cam_periph_hold(periph, PRIBIO) != 0) {
 466                 cam_periph_unlock(periph);
 467                 cam_periph_release(periph);
 468                 return (0);
 469         }
 470
 471         softc = (struct ada_softc *)periph->softc;
 472         /* We only sync the cache if the drive is capable of it. */
 473         if ((softc->flags & ADA_FLAG_CAN_FLUSHCACHE) != 0 &&
 474             (softc->flags & ADA_FLAG_PACK_INVALID) == 0) {
 475
 476                 ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL);
 477                 cam_fill_ataio(&ccb->ataio,
 478                                     1,
 479                                     adadone,
 480                                     CAM_DIR_NONE,
 481                                     0,
 482                                     NULL,
 483                                     0,
 484                                     ada_default_timeout*1000);
 485
 486                 if (softc->flags & ADA_FLAG_CAN_48BIT)
 487                         ata_48bit_cmd(&ccb->ataio, ATA_FLUSHCACHE48, 0, 0, 0);
 488                 else
 489                         ata_28bit_cmd(&ccb->ataio, ATA_FLUSHCACHE, 0, 0, 0);
 490                 cam_periph_runccb(ccb, /*error_routine*/NULL, /*cam_flags*/0,
 491                     /*sense_flags*/0, softc->disk->d_devstat);
 492
 493                 if ((ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP)
 494                         xpt_print(periph->path, "Synchronize cache failed\n");
 495                 xpt_release_ccb(ccb);
 496         }
 497
 498         softc->flags &= ~ADA_FLAG_OPEN;
 499         cam_periph_unhold(periph);
 500         cam_periph_unlock(periph);
 501         cam_periph_release(periph);
 502         return (0);
 503 }
 504
 505 static void
 506 adaschedule(struct cam_periph *periph)
 507 {
 508         struct ada_softc *softc = (struct ada_softc *)periph->softc;
 509         uint32_t prio;
 510
 511         /* Check if cam_periph_getccb() was called. */
 512         prio = periph->immediate_priority;
 513
 514         /* Check if we have more work to do. */
 515         if (bioq_first(&softc->bio_queue) ||
 516             (!softc->trim_running && bioq_first(&softc->trim_queue))) {
 517                 prio = CAM_PRIORITY_NORMAL;
 518         }
 519
 520         /* Schedule CCB if any of above is true. */
 521         if (prio != CAM_PRIORITY_NONE)
 522                 xpt_schedule(periph, prio);
 523 }
 524
 525 /*
 526  * Actually translate the requested transfer into one the physical driver
 527  * can understand.  The transfer is described by a buf and will include
 528  * only one physical transfer.
 529  */
 530 static void
 531 adastrategy(struct bio *bp)
 532 {
 533         struct cam_periph *periph;
 534         struct ada_softc *softc;
 535
 536         periph = (struct cam_periph *)bp->bio_disk->d_drv1;
 537         if (periph == NULL) {
 538                 biofinish(bp, NULL, ENXIO);
 539                 return;
 540         }
 541         softc = (struct ada_softc *)periph->softc;
 542
 543         cam_periph_lock(periph);
 544
 545         /*
 546          * If the device has been made invalid, error out
 547          */
 548         if ((softc->flags & ADA_FLAG_PACK_INVALID)) {
 549                 cam_periph_unlock(periph);
 550                 biofinish(bp, NULL, ENXIO);
 551                 return;
 552         }
 553
 554         /*
 555          * Place it in the queue of disk activities for this disk
 556          */
 557         if (bp->bio_cmd == BIO_DELETE &&
 558             (softc->flags & ADA_FLAG_CAN_TRIM))
 559                 bioq_disksort(&softc->trim_queue, bp);
 560         else
 561                 bioq_disksort(&softc->bio_queue, bp);
 562
 563         /*
 564          * Schedule ourselves for performing the work.
 565          */
 566         adaschedule(periph);
 567         cam_periph_unlock(periph);
 568
 569         return;
 570 }
 571
 572 static int
 573 adadump(void *arg, void *virtual, vm_offset_t physical, off_t offset, size_t length)
 574 {
 575         struct      cam_periph *periph;
 576         struct      ada_softc *softc;
 577         u_int       secsize;
 578         union       ccb ccb;
 579         struct      disk *dp;
 580         uint64_t    lba;
 581         uint16_t    count;
 582
 583         dp = arg;
 584         periph = dp->d_drv1;
 585         if (periph == NULL)
 586                 return (ENXIO);
 587         softc = (struct ada_softc *)periph->softc;
 588         cam_periph_lock(periph);
 589         secsize = softc->params.secsize;
 590         lba = offset / secsize;
 591         count = length / secsize;
 592
 593         if ((softc->flags & ADA_FLAG_PACK_INVALID) != 0) {
 594                 cam_periph_unlock(periph);
 595                 return (ENXIO);
 596         }
 597
 598         if (length > 0) {
 599                 xpt_setup_ccb(&ccb.ccb_h, periph->path, CAM_PRIORITY_NORMAL);
 600                 ccb.ccb_h.ccb_state = ADA_CCB_DUMP;
 601                 cam_fill_ataio(&ccb.ataio,
 602                     0,
 603                     adadone,
 604                     CAM_DIR_OUT,
 605                     0,
 606                     (u_int8_t *) virtual,
 607                     length,
 608                     ada_default_timeout*1000);
 609                 if ((softc->flags & ADA_FLAG_CAN_48BIT) &&
 610                     (lba + count >= ATA_MAX_28BIT_LBA ||
 611                     count >= 256)) {
 612                         ata_48bit_cmd(&ccb.ataio, ATA_WRITE_DMA48,
 613                             0, lba, count);
 614                 } else {
 615                         ata_28bit_cmd(&ccb.ataio, ATA_WRITE_DMA,
 616                             0, lba, count);
 617                 }
 618                 xpt_polled_action(&ccb);
 619
 620                 if ((ccb.ataio.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
 621                         printf("Aborting dump due to I/O error.\n");
 622                         cam_periph_unlock(periph);
 623                         return(EIO);
 624                 }
 625                 cam_periph_unlock(periph);
 626                 return(0);
 627         }
 628
 629         if (softc->flags & ADA_FLAG_CAN_FLUSHCACHE) {
 630                 xpt_setup_ccb(&ccb.ccb_h, periph->path, CAM_PRIORITY_NORMAL);
 631
 632                 ccb.ccb_h.ccb_state = ADA_CCB_DUMP;
 633                 cam_fill_ataio(&ccb.ataio,
 634                                     1,
 635                                     adadone,
 636                                     CAM_DIR_NONE,
 637                                     0,
 638                                     NULL,
 639                                     0,
 640                                     ada_default_timeout*1000);
 641
 642                 if (softc->flags & ADA_FLAG_CAN_48BIT)
 643                         ata_48bit_cmd(&ccb.ataio, ATA_FLUSHCACHE48, 0, 0, 0);
 644                 else
 645                         ata_28bit_cmd(&ccb.ataio, ATA_FLUSHCACHE, 0, 0, 0);
 646                 xpt_polled_action(&ccb);
 647
 648                 if ((ccb.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP)
 649                         xpt_print(periph->path, "Synchronize cache failed\n");
 650
 651                 if ((ccb.ccb_h.status & CAM_DEV_QFRZN) != 0)
 652                         cam_release_devq(ccb.ccb_h.path,
 653                                          /*relsim_flags*/0,
 654                                          /*reduction*/0,
 655                                          /*timeout*/0,
 656                                          /*getcount_only*/0);
 657         }
 658         cam_periph_unlock(periph);
 659         return (0);
 660 }
 661
 662 static void
 663 adainit(void)
 664 {
 665         cam_status status;
 666
 667         /*
 668          * Install a global async callback.  This callback will
 669          * receive async callbacks like "new device found".
 670          */
 671         status = xpt_register_async(AC_FOUND_DEVICE, adaasync, NULL, NULL);
 672
 673         if (status != CAM_REQ_CMP) {
 674                 printf("ada: Failed to attach master async callback "
 675                        "due to status 0x%x!\n", status);
 676         } else if (ada_send_ordered) {
 677
 678                 /* Register our event handlers */
 679                 if ((EVENTHANDLER_REGISTER(power_suspend, adasuspend,
 680                                            NULL, EVENTHANDLER_PRI_LAST)) == NULL)
 681                     printf("adainit: power event registration failed!\n");
 682                 if ((EVENTHANDLER_REGISTER(power_resume, adaresume,
 683                                            NULL, EVENTHANDLER_PRI_LAST)) == NULL)
 684                     printf("adainit: power event registration failed!\n");
 685                 if ((EVENTHANDLER_REGISTER(shutdown_post_sync, adashutdown,
 686                                            NULL, SHUTDOWN_PRI_DEFAULT)) == NULL)
 687                     printf("adainit: shutdown event registration failed!\n");
 688         }
 689 }
 690
 691 static void
 692 adaoninvalidate(struct cam_periph *periph)
 693 {
 694         struct ada_softc *softc;
 695
 696         softc = (struct ada_softc *)periph->softc;
 697
 698         /*
 699          * De-register any async callbacks.
 700          */
 701         xpt_register_async(0, adaasync, periph, periph->path);
 702
 703         softc->flags |= ADA_FLAG_PACK_INVALID;
 704
 705         /*
 706          * Return all queued I/O with ENXIO.
 707          * XXX Handle any transactions queued to the card
 708          *     with XPT_ABORT_CCB.
 709          */
 710         bioq_flush(&softc->bio_queue, NULL, ENXIO);
 711         bioq_flush(&softc->trim_queue, NULL, ENXIO);
 712
 713         disk_gone(softc->disk);
 714         xpt_print(periph->path, "lost device\n");
 715 }
 716
 717 static void
 718 adacleanup(struct cam_periph *periph)
 719 {
 720         struct ada_softc *softc;
 721
 722         softc = (struct ada_softc *)periph->softc;
 723
 724         xpt_print(periph->path, "removing device entry\n");
 725         cam_periph_unlock(periph);
 726
 727         /*
 728          * If we can't free the sysctl tree, oh well...
 729          */
 730         if ((softc->flags & ADA_FLAG_SCTX_INIT) != 0
 731             && sysctl_ctx_free(&softc->sysctl_ctx) != 0) {
 732                 xpt_print(periph->path, "can't remove sysctl context\n");
 733         }
 734
 735         disk_destroy(softc->disk);
 736         callout_drain(&softc->sendordered_c);
 737         free(softc, M_DEVBUF);
 738         cam_periph_lock(periph);
 739 }
 740
 741 static void
 742 adaasync(void *callback_arg, u_int32_t code,
 743         struct cam_path *path, void *arg)
 744 {
 745         struct cam_periph *periph;
 746         struct ada_softc *softc;
 747
 748         periph = (struct cam_periph *)callback_arg;
 749         switch (code) {
 750         case AC_FOUND_DEVICE:
 751         {
 752                 struct ccb_getdev *cgd;
 753                 cam_status status;
 754
 755                 cgd = (struct ccb_getdev *)arg;
 756                 if (cgd == NULL)
 757                         break;
 758
 759                 if (cgd->protocol != PROTO_ATA)
 760                         break;
 761
 762                 /*
 763                  * Allocate a peripheral instance for
 764                  * this device and start the probe
 765                  * process.
 766                  */
 767                 status = cam_periph_alloc(adaregister, adaoninvalidate,
 768                                           adacleanup, adastart,
 769                                           "ada", CAM_PERIPH_BIO,
 770                                           cgd->ccb_h.path, adaasync,
 771                                           AC_FOUND_DEVICE, cgd);
 772
 773                 if (status != CAM_REQ_CMP
 774                  && status != CAM_REQ_INPROG)
 775                         printf("adaasync: Unable to attach to new device "
 776                                 "due to status 0x%x\n", status);
 777                 break;
 778         }
 779         case AC_SENT_BDR:
 780         case AC_BUS_RESET:
 781         {
 782                 struct ccb_getdev cgd;
 783
 784                 softc = (struct ada_softc *)periph->softc;
 785                 cam_periph_async(periph, code, path, arg);
 786                 if (softc->state != ADA_STATE_NORMAL)
 787                         break;
 788                 xpt_setup_ccb(&cgd.ccb_h, periph->path, CAM_PRIORITY_NORMAL);
 789                 cgd.ccb_h.func_code = XPT_GDEV_TYPE;
 790                 xpt_action((union ccb *)&cgd);
 791                 if (ADA_RA >= 0 &&
 792                     cgd.ident_data.support.command1 & ATA_SUPPORT_LOOKAHEAD)
 793                         softc->state = ADA_STATE_RAHEAD;
 794                 else if (ADA_WC >= 0 &&
 795                     cgd.ident_data.support.command1 & ATA_SUPPORT_WRITECACHE)
 796                         softc->state = ADA_STATE_WCACHE;
 797                 else
 798                     break;
 799                 cam_periph_acquire(periph);
 800                 cam_freeze_devq_arg(periph->path,
 801                     RELSIM_RELEASE_RUNLEVEL, CAM_RL_DEV + 1);
 802                 xpt_schedule(periph, CAM_PRIORITY_DEV);
 803         }
 804         default:
 805                 cam_periph_async(periph, code, path, arg);
 806                 break;
 807         }
 808 }
 809
 810 static void
 811 adasysctlinit(void *context, int pending)
 812 {
 813         struct cam_periph *periph;
 814         struct ada_softc *softc;
 815         char tmpstr[80], tmpstr2[80];
 816
 817         periph = (struct cam_periph *)context;
 818
 819         /* periph was held for us when this task was enqueued */
 820         if (periph->flags & CAM_PERIPH_INVALID) {
 821                 cam_periph_release(periph);
 822                 return;
 823         }
 824
 825         softc = (struct ada_softc *)periph->softc;
 826         snprintf(tmpstr, sizeof(tmpstr), "CAM ADA unit %d", periph->unit_number);
 827         snprintf(tmpstr2, sizeof(tmpstr2), "%d", periph->unit_number);
 828
 829         sysctl_ctx_init(&softc->sysctl_ctx);
 830         softc->flags |= ADA_FLAG_SCTX_INIT;
 831         softc->sysctl_tree = SYSCTL_ADD_NODE(&softc->sysctl_ctx,
 832                 SYSCTL_STATIC_CHILDREN(_kern_cam_ada), OID_AUTO, tmpstr2,
 833                 CTLFLAG_RD, 0, tmpstr);
 834         if (softc->sysctl_tree == NULL) {
 835                 printf("adasysctlinit: unable to allocate sysctl tree\n");
 836                 cam_periph_release(periph);
 837                 return;
 838         }
 839
 840         SYSCTL_ADD_INT(&softc->sysctl_ctx, SYSCTL_CHILDREN(softc->sysctl_tree),
 841                 OID_AUTO, "read_ahead", CTLFLAG_RW | CTLFLAG_MPSAFE,
 842                 &softc->read_ahead, 0, "Enable disk read ahead.");
 843         SYSCTL_ADD_INT(&softc->sysctl_ctx, SYSCTL_CHILDREN(softc->sysctl_tree),
 844                 OID_AUTO, "write_cache", CTLFLAG_RW | CTLFLAG_MPSAFE,
 845                 &softc->write_cache, 0, "Enable disk write cache.");
 846 #ifdef ADA_TEST_FAILURE
 847         /*
 848          * Add a 'door bell' sysctl which allows one to set it from userland
 849          * and cause something bad to happen.  For the moment, we only allow
 850          * whacking the next read or write.
 851          */
 852         SYSCTL_ADD_INT(&softc->sysctl_ctx, SYSCTL_CHILDREN(softc->sysctl_tree),
 853                 OID_AUTO, "force_read_error", CTLFLAG_RW | CTLFLAG_MPSAFE,
 854                 &softc->force_read_error, 0,
 855                 "Force a read error for the next N reads.");
 856         SYSCTL_ADD_INT(&softc->sysctl_ctx, SYSCTL_CHILDREN(softc->sysctl_tree),
 857                 OID_AUTO, "force_write_error", CTLFLAG_RW | CTLFLAG_MPSAFE,
 858                 &softc->force_write_error, 0,
 859                 "Force a write error for the next N writes.");
 860         SYSCTL_ADD_INT(&softc->sysctl_ctx, SYSCTL_CHILDREN(softc->sysctl_tree),
 861                 OID_AUTO, "periodic_read_error", CTLFLAG_RW | CTLFLAG_MPSAFE,
 862                 &softc->periodic_read_error, 0,
 863                 "Force a read error every N reads (don't set too low).");
 864 #endif
 865         cam_periph_release(periph);
 866 }
 867
 868 static int
 869 adagetattr(struct bio *bp)
 870 {
 871         int ret = -1;
 872         struct cam_periph *periph;
 873
 874         if (bp->bio_disk == NULL || bp->bio_disk->d_drv1 == NULL)
 875                 return ENXIO;
 876         periph = (struct cam_periph *)bp->bio_disk->d_drv1;
 877         if (periph->path == NULL)
 878                 return ENXIO;
 879
 880         ret = xpt_getattr(bp->bio_data, bp->bio_length, bp->bio_attribute,
 881             periph->path);
 882         if (ret == 0)
 883                 bp->bio_completed = bp->bio_length;
 884         return ret;
 885 }
 886
 887 static cam_status
 888 adaregister(struct cam_periph *periph, void *arg)
 889 {
 890         struct ada_softc *softc;
 891         struct ccb_pathinq cpi;
 892         struct ccb_getdev *cgd;
 893         char   announce_buf[80], buf1[32];
 894         struct disk_params *dp;
 895         caddr_t match;
 896         u_int maxio;
 897         int legacy_id, quirks;
 898
 899         cgd = (struct ccb_getdev *)arg;
 900         if (periph == NULL) {
 901                 printf("adaregister: periph was NULL!!\n");
 902                 return(CAM_REQ_CMP_ERR);
 903         }
 904
 905         if (cgd == NULL) {
 906                 printf("adaregister: no getdev CCB, can't register device\n");
 907                 return(CAM_REQ_CMP_ERR);
 908         }
 909
 910         softc = (struct ada_softc *)malloc(sizeof(*softc), M_DEVBUF,
 911             M_NOWAIT|M_ZERO);
 912
 913         if (softc == NULL) {
 914                 printf("adaregister: Unable to probe new device. "
 915                     "Unable to allocate softc\n");
 916                 return(CAM_REQ_CMP_ERR);
 917         }
 918
 919         bioq_init(&softc->bio_queue);
 920         bioq_init(&softc->trim_queue);
 921
 922         if (cgd->ident_data.capabilities1 & ATA_SUPPORT_DMA &&
 923             (cgd->inq_flags & SID_DMA))
 924                 softc->flags |= ADA_FLAG_CAN_DMA;
 925         if (cgd->ident_data.support.command2 & ATA_SUPPORT_ADDRESS48)
 926                 softc->flags |= ADA_FLAG_CAN_48BIT;
 927         if (cgd->ident_data.support.command2 & ATA_SUPPORT_FLUSHCACHE)
 928                 softc->flags |= ADA_FLAG_CAN_FLUSHCACHE;
 929         if (cgd->ident_data.support.command1 & ATA_SUPPORT_POWERMGT)
 930                 softc->flags |= ADA_FLAG_CAN_POWERMGT;
 931         if (cgd->ident_data.satacapabilities & ATA_SUPPORT_NCQ &&
 932             (cgd->inq_flags & SID_DMA) && (cgd->inq_flags & SID_CmdQue))
 933                 softc->flags |= ADA_FLAG_CAN_NCQ;
 934         if (cgd->ident_data.support_dsm & ATA_SUPPORT_DSM_TRIM) {
 935                 softc->flags |= ADA_FLAG_CAN_TRIM;
 936                 softc->trim_max_ranges = TRIM_MAX_RANGES;
 937                 if (cgd->ident_data.max_dsm_blocks != 0) {
 938                         softc->trim_max_ranges =
 939                             min(cgd->ident_data.max_dsm_blocks * 64,
 940                                 softc->trim_max_ranges);
 941                 }
 942         }
 943         if (cgd->ident_data.support.command2 & ATA_SUPPORT_CFA)
 944                 softc->flags |= ADA_FLAG_CAN_CFA;
 945
 946         periph->softc = softc;
 947
 948         /*
 949          * See if this device has any quirks.
 950          */
 951         match = cam_quirkmatch((caddr_t)&cgd->ident_data,
 952                                (caddr_t)ada_quirk_table,
 953                                sizeof(ada_quirk_table)/sizeof(*ada_quirk_table),
 954                                sizeof(*ada_quirk_table), ata_identify_match);
 955         if (match != NULL)
 956                 softc->quirks = ((struct ada_quirk_entry *)match)->quirks;
 957         else
 958                 softc->quirks = ADA_Q_NONE;
 959
 960         bzero(&cpi, sizeof(cpi));
 961         xpt_setup_ccb(&cpi.ccb_h, periph->path, CAM_PRIORITY_NONE);
 962         cpi.ccb_h.func_code = XPT_PATH_INQ;
 963         xpt_action((union ccb *)&cpi);
 964
 965         TASK_INIT(&softc->sysctl_task, 0, adasysctlinit, periph);
 966
 967         /*
 968          * Register this media as a disk
 969          */
 970         (void)cam_periph_hold(periph, PRIBIO);
 971         mtx_unlock(periph->sim->mtx);
 972         snprintf(announce_buf, sizeof(announce_buf),
 973             "kern.cam.ada.%d.quirks", periph->unit_number);
 974         quirks = softc->quirks;
 975         TUNABLE_INT_FETCH(announce_buf, &quirks);
 976         softc->quirks = quirks;
 977         softc->read_ahead = -1;
 978         snprintf(announce_buf, sizeof(announce_buf),
 979             "kern.cam.ada.%d.read_ahead", periph->unit_number);
 980         TUNABLE_INT_FETCH(announce_buf, &softc->read_ahead);
 981         softc->write_cache = -1;
 982         snprintf(announce_buf, sizeof(announce_buf),
 983             "kern.cam.ada.%d.write_cache", periph->unit_number);
 984         TUNABLE_INT_FETCH(announce_buf, &softc->write_cache);
 985         adagetparams(periph, cgd);
 986         softc->disk = disk_alloc();
 987         softc->disk->d_devstat = devstat_new_entry(periph->periph_name,
 988                           periph->unit_number, softc->params.secsize,
 989                           DEVSTAT_ALL_SUPPORTED,
 990                           DEVSTAT_TYPE_DIRECT |
 991                           XPORT_DEVSTAT_TYPE(cpi.transport),
 992                           DEVSTAT_PRIORITY_DISK);
 993         softc->disk->d_open = adaopen;
 994         softc->disk->d_close = adaclose;
 995         softc->disk->d_strategy = adastrategy;
 996         softc->disk->d_getattr = adagetattr;
 997         softc->disk->d_dump = adadump;
 998         softc->disk->d_name = "ada";
 999         softc->disk->d_drv1 = periph;
1000         maxio = cpi.maxio;              /* Honor max I/O size of SIM */
1001         if (maxio == 0)
1002                 maxio = DFLTPHYS;       /* traditional default */
1003         else if (maxio > MAXPHYS)
1004                 maxio = MAXPHYS;        /* for safety */
1005         if (softc->flags & ADA_FLAG_CAN_48BIT)
1006                 maxio = min(maxio, 65536 * softc->params.secsize);
1007         else                                    /* 28bit ATA command limit */
1008                 maxio = min(maxio, 256 * softc->params.secsize);
1009         softc->disk->d_maxsize = maxio;
1010         softc->disk->d_unit = periph->unit_number;
1011         softc->disk->d_flags = 0;
1012         if (softc->flags & ADA_FLAG_CAN_FLUSHCACHE)
1013                 softc->disk->d_flags |= DISKFLAG_CANFLUSHCACHE;
1014         if ((softc->flags & ADA_FLAG_CAN_TRIM) ||
1015             ((softc->flags & ADA_FLAG_CAN_CFA) &&
1016             !(softc->flags & ADA_FLAG_CAN_48BIT)))
1017                 softc->disk->d_flags |= DISKFLAG_CANDELETE;
1018         strlcpy(softc->disk->d_descr, cgd->ident_data.model,
1019             MIN(sizeof(softc->disk->d_descr), sizeof(cgd->ident_data.model)));
1020         softc->disk->d_hba_vendor = cpi.hba_vendor;
1021         softc->disk->d_hba_device = cpi.hba_device;
1022         softc->disk->d_hba_subvendor = cpi.hba_subvendor;
1023         softc->disk->d_hba_subdevice = cpi.hba_subdevice;
1024
1025         softc->disk->d_sectorsize = softc->params.secsize;
1026         softc->disk->d_mediasize = (off_t)softc->params.sectors *
1027             softc->params.secsize;
1028         if (ata_physical_sector_size(&cgd->ident_data) !=
1029             softc->params.secsize) {
1030                 softc->disk->d_stripesize =
1031                     ata_physical_sector_size(&cgd->ident_data);
1032                 softc->disk->d_stripeoffset = (softc->disk->d_stripesize -
1033                     ata_logical_sector_offset(&cgd->ident_data)) %
1034                     softc->disk->d_stripesize;
1035         } else if (softc->quirks & ADA_Q_4K) {
1036                 softc->disk->d_stripesize = 4096;
1037                 softc->disk->d_stripeoffset = 0;
1038         }
1039         softc->disk->d_fwsectors = softc->params.secs_per_track;
1040         softc->disk->d_fwheads = softc->params.heads;
1041         ata_disk_firmware_geom_adjust(softc->disk);
1042
1043         if (ada_legacy_aliases) {
1044 #ifdef ATA_STATIC_ID
1045                 legacy_id = xpt_path_legacy_ata_id(periph->path);
1046 #else
1047                 legacy_id = softc->disk->d_unit;
1048 #endif
1049                 if (legacy_id >= 0) {
1050                         snprintf(announce_buf, sizeof(announce_buf),
1051                             "kern.devalias.%s%d",
1052                             softc->disk->d_name, softc->disk->d_unit);
1053                         snprintf(buf1, sizeof(buf1),
1054                             "ad%d", legacy_id);
1055                         setenv(announce_buf, buf1);
1056                 }
1057         } else
1058                 legacy_id = -1;
1059         disk_create(softc->disk, DISK_VERSION);
1060         mtx_lock(periph->sim->mtx);
1061         cam_periph_unhold(periph);
1062
1063         dp = &softc->params;
1064         snprintf(announce_buf, sizeof(announce_buf),
1065                 "%juMB (%ju %u byte sectors: %dH %dS/T %dC)",
1066                 (uintmax_t)(((uintmax_t)dp->secsize *
1067                 dp->sectors) / (1024*1024)),
1068                 (uintmax_t)dp->sectors,
1069                 dp->secsize, dp->heads,
1070                 dp->secs_per_track, dp->cylinders);
1071         xpt_announce_periph(periph, announce_buf);
1072         if (legacy_id >= 0)
1073                 printf("%s%d: Previously was known as ad%d\n",
1074                        periph->periph_name, periph->unit_number, legacy_id);
1075
1076         /*
1077          * Create our sysctl variables, now that we know
1078          * we have successfully attached.
1079          */
1080         cam_periph_acquire(periph);
1081         taskqueue_enqueue(taskqueue_thread, &softc->sysctl_task);
1082
1083         /*
1084          * Add async callbacks for bus reset and
1085          * bus device reset calls.  I don't bother
1086          * checking if this fails as, in most cases,
1087          * the system will function just fine without
1088          * them and the only alternative would be to
1089          * not attach the device on failure.
1090          */
1091         xpt_register_async(AC_SENT_BDR | AC_BUS_RESET | AC_LOST_DEVICE,
1092                            adaasync, periph, periph->path);
1093
1094         /*
1095          * Schedule a periodic event to occasionally send an
1096          * ordered tag to a device.
1097          */
1098         callout_init_mtx(&softc->sendordered_c, periph->sim->mtx, 0);
1099         callout_reset(&softc->sendordered_c,
1100             (ada_default_timeout * hz) / ADA_ORDEREDTAG_INTERVAL,
1101             adasendorderedtag, softc);
1102
1103         if (ADA_RA >= 0 &&
1104             cgd->ident_data.support.command1 & ATA_SUPPORT_LOOKAHEAD) {
1105                 softc->state = ADA_STATE_RAHEAD;
1106                 cam_periph_acquire(periph);
1107                 cam_freeze_devq_arg(periph->path,
1108                     RELSIM_RELEASE_RUNLEVEL, CAM_RL_DEV + 1);
1109                 xpt_schedule(periph, CAM_PRIORITY_DEV);
1110         } else if (ADA_WC >= 0 &&
1111             cgd->ident_data.support.command1 & ATA_SUPPORT_WRITECACHE) {
1112                 softc->state = ADA_STATE_WCACHE;
1113                 cam_periph_acquire(periph);
1114                 cam_freeze_devq_arg(periph->path,
1115                     RELSIM_RELEASE_RUNLEVEL, CAM_RL_DEV + 1);
1116                 xpt_schedule(periph, CAM_PRIORITY_DEV);
1117         } else
1118                 softc->state = ADA_STATE_NORMAL;
1119
1120         return(CAM_REQ_CMP);
1121 }
1122
1123 static void
1124 adastart(struct cam_periph *periph, union ccb *start_ccb)
1125 {
1126         struct ada_softc *softc = (struct ada_softc *)periph->softc;
1127         struct ccb_ataio *ataio = &start_ccb->ataio;
1128
1129         switch (softc->state) {
1130         case ADA_STATE_NORMAL:
1131         {
1132                 struct bio *bp;
1133                 u_int8_t tag_code;
1134
1135                 /* Execute immediate CCB if waiting. */
1136                 if (periph->immediate_priority <= periph->pinfo.priority) {
1137                         CAM_DEBUG_PRINT(CAM_DEBUG_SUBTRACE,
1138                                         ("queuing for immediate ccb\n"));
1139                         start_ccb->ccb_h.ccb_state = ADA_CCB_WAITING;
1140                         SLIST_INSERT_HEAD(&periph->ccb_list, &start_ccb->ccb_h,
1141                                           periph_links.sle);
1142                         periph->immediate_priority = CAM_PRIORITY_NONE;
1143                         wakeup(&periph->ccb_list);
1144                         /* Have more work to do, so ensure we stay scheduled */
1145                         adaschedule(periph);
1146                         break;
1147                 }
1148                 /* Run TRIM if not running yet. */
1149                 if (!softc->trim_running &&
1150                     (bp = bioq_first(&softc->trim_queue)) != 0) {
1151                         struct trim_request *req = &softc->trim_req;
1152                         struct bio *bp1;
1153                         uint64_t lastlba = (uint64_t)-1;
1154                         int bps = 0, c, lastcount = 0, off, ranges = 0;
1155
1156                         softc->trim_running = 1;
1157                         bzero(req, sizeof(*req));
1158                         bp1 = bp;
1159                         do {
1160                                 uint64_t lba = bp1->bio_pblkno;
1161                                 int count = bp1->bio_bcount /
1162                                     softc->params.secsize;
1163
1164                                 bioq_remove(&softc->trim_queue, bp1);
1165
1166                                 /* Try to extend the previous range. */
1167                                 if (lba == lastlba) {
1168                                         c = min(count, 0xffff - lastcount);
1169                                         lastcount += c;
1170                                         off = (ranges - 1) * 8;
1171                                         req->data[off + 6] = lastcount & 0xff;
1172                                         req->data[off + 7] =
1173                                             (lastcount >> 8) & 0xff;
1174                                         count -= c;
1175                                         lba += c;
1176                                 }
1177
1178                                 while (count > 0) {
1179                                         c = min(count, 0xffff);
1180                                         off = ranges * 8;
1181                                         req->data[off + 0] = lba & 0xff;
1182                                         req->data[off + 1] = (lba >> 8) & 0xff;
1183                                         req->data[off + 2] = (lba >> 16) & 0xff;
1184                                         req->data[off + 3] = (lba >> 24) & 0xff;
1185                                         req->data[off + 4] = (lba >> 32) & 0xff;
1186                                         req->data[off + 5] = (lba >> 40) & 0xff;
1187                                         req->data[off + 6] = c & 0xff;
1188                                         req->data[off + 7] = (c >> 8) & 0xff;
1189                                         lba += c;
1190                                         count -= c;
1191                                         lastcount = c;
1192                                         ranges++;
1193                                 }
1194                                 lastlba = lba;
1195                                 req->bps[bps++] = bp1;
1196                                 bp1 = bioq_first(&softc->trim_queue);
1197                                 if (bps >= TRIM_MAX_BIOS ||
1198                                     bp1 == NULL ||
1199                                     bp1->bio_bcount / softc->params.secsize >
1200                                     (softc->trim_max_ranges - ranges) * 0xffff)
1201                                         break;
1202                         } while (1);
1203                         cam_fill_ataio(ataio,
1204                             ada_retry_count,
1205                             adadone,
1206                             CAM_DIR_OUT,
1207                             0,
1208                             req->data,
1209                             ((ranges + 63) / 64) * 512,
1210                             ada_default_timeout * 1000);
1211                         ata_48bit_cmd(ataio, ATA_DATA_SET_MANAGEMENT,
1212                             ATA_DSM_TRIM, 0, (ranges + 63) / 64);
1213                         start_ccb->ccb_h.ccb_state = ADA_CCB_TRIM;
1214                         goto out;
1215                 }
1216                 /* Run regular command. */
1217                 bp = bioq_first(&softc->bio_queue);
1218                 if (bp == NULL) {
1219                         xpt_release_ccb(start_ccb);
1220                         break;
1221                 }
1222                 bioq_remove(&softc->bio_queue, bp);
1223
1224                 if ((bp->bio_flags & BIO_ORDERED) != 0
1225                  || (softc->flags & ADA_FLAG_NEED_OTAG) != 0) {
1226                         softc->flags &= ~ADA_FLAG_NEED_OTAG;
1227                         softc->ordered_tag_count++;
1228                         tag_code = 0;
1229                 } else {
1230                         tag_code = 1;
1231                 }
1232                 switch (bp->bio_cmd) {
1233                 case BIO_READ:
1234                 case BIO_WRITE:
1235                 {
1236                         uint64_t lba = bp->bio_pblkno;
1237                         uint16_t count = bp->bio_bcount / softc->params.secsize;
1238 #ifdef ADA_TEST_FAILURE
1239                         int fail = 0;
1240
1241                         /*
1242                          * Support the failure ioctls.  If the command is a
1243                          * read, and there are pending forced read errors, or
1244                          * if a write and pending write errors, then fail this
1245                          * operation with EIO.  This is useful for testing
1246                          * purposes.  Also, support having every Nth read fail.
1247                          *
1248                          * This is a rather blunt tool.
1249                          */
1250                         if (bp->bio_cmd == BIO_READ) {
1251                                 if (softc->force_read_error) {
1252                                         softc->force_read_error--;
1253                                         fail = 1;
1254                                 }
1255                                 if (softc->periodic_read_error > 0) {
1256                                         if (++softc->periodic_read_count >=
1257                                             softc->periodic_read_error) {
1258                                                 softc->periodic_read_count = 0;
1259                                                 fail = 1;
1260                                         }
1261                                 }
1262                         } else {
1263                                 if (softc->force_write_error) {
1264                                         softc->force_write_error--;
1265                                         fail = 1;
1266                                 }
1267                         }
1268                         if (fail) {
1269                                 bp->bio_error = EIO;
1270                                 bp->bio_flags |= BIO_ERROR;
1271                                 biodone(bp);
1272                                 xpt_release_ccb(start_ccb);
1273                                 adaschedule(periph);
1274                                 return;
1275                         }
1276 #endif
1277                         cam_fill_ataio(ataio,
1278                             ada_retry_count,
1279                             adadone,
1280                             bp->bio_cmd == BIO_READ ?
1281                                 CAM_DIR_IN : CAM_DIR_OUT,
1282                             tag_code,
1283                             bp->bio_data,
1284                             bp->bio_bcount,
1285                             ada_default_timeout*1000);
1286
1287                         if ((softc->flags & ADA_FLAG_CAN_NCQ) && tag_code) {
1288                                 if (bp->bio_cmd == BIO_READ) {
1289                                         ata_ncq_cmd(ataio, ATA_READ_FPDMA_QUEUED,
1290                                             lba, count);
1291                                 } else {
1292                                         ata_ncq_cmd(ataio, ATA_WRITE_FPDMA_QUEUED,
1293                                             lba, count);
1294                                 }
1295                         } else if ((softc->flags & ADA_FLAG_CAN_48BIT) &&
1296                             (lba + count >= ATA_MAX_28BIT_LBA ||
1297                             count > 256)) {
1298                                 if (softc->flags & ADA_FLAG_CAN_DMA) {
1299                                         if (bp->bio_cmd == BIO_READ) {
1300                                                 ata_48bit_cmd(ataio, ATA_READ_DMA48,
1301                                                     0, lba, count);
1302                                         } else {
1303                                                 ata_48bit_cmd(ataio, ATA_WRITE_DMA48,
1304                                                     0, lba, count);
1305                                         }
1306                                 } else {
1307                                         if (bp->bio_cmd == BIO_READ) {
1308                                                 ata_48bit_cmd(ataio, ATA_READ_MUL48,
1309                                                     0, lba, count);
1310                                         } else {
1311                                                 ata_48bit_cmd(ataio, ATA_WRITE_MUL48,
1312                                                     0, lba, count);
1313                                         }
1314                                 }
1315                         } else {
1316                                 if (count == 256)
1317                                         count = 0;
1318                                 if (softc->flags & ADA_FLAG_CAN_DMA) {
1319                                         if (bp->bio_cmd == BIO_READ) {
1320                                                 ata_28bit_cmd(ataio, ATA_READ_DMA,
1321                                                     0, lba, count);
1322                                         } else {
1323                                                 ata_28bit_cmd(ataio, ATA_WRITE_DMA,
1324                                                     0, lba, count);
1325                                         }
1326                                 } else {
1327                                         if (bp->bio_cmd == BIO_READ) {
1328                                                 ata_28bit_cmd(ataio, ATA_READ_MUL,
1329                                                     0, lba, count);
1330                                         } else {
1331                                                 ata_28bit_cmd(ataio, ATA_WRITE_MUL,
1332                                                     0, lba, count);
1333                                         }
1334                                 }
1335                         }
1336                         break;
1337                 }
1338                 case BIO_DELETE:
1339                 {
1340                         uint64_t lba = bp->bio_pblkno;
1341                         uint16_t count = bp->bio_bcount / softc->params.secsize;
1342
1343                         cam_fill_ataio(ataio,
1344                             ada_retry_count,
1345                             adadone,
1346                             CAM_DIR_NONE,
1347                             0,
1348                             NULL,
1349                             0,
1350                             ada_default_timeout*1000);
1351
1352                         if (count >= 256)
1353                                 count = 0;
1354                         ata_28bit_cmd(ataio, ATA_CFA_ERASE, 0, lba, count);
1355                         break;
1356                 }
1357                 case BIO_FLUSH:
1358                         cam_fill_ataio(ataio,
1359                             1,
1360                             adadone,
1361                             CAM_DIR_NONE,
1362                             0,
1363                             NULL,
1364                             0,
1365                             ada_default_timeout*1000);
1366
1367                         if (softc->flags & ADA_FLAG_CAN_48BIT)
1368                                 ata_48bit_cmd(ataio, ATA_FLUSHCACHE48, 0, 0, 0);
1369                         else
1370                                 ata_28bit_cmd(ataio, ATA_FLUSHCACHE, 0, 0, 0);
1371                         break;
1372                 }
1373                 start_ccb->ccb_h.ccb_state = ADA_CCB_BUFFER_IO;
1374 out:
1375                 start_ccb->ccb_h.ccb_bp = bp;
1376                 softc->outstanding_cmds++;
1377                 xpt_action(start_ccb);
1378
1379                 /* May have more work to do, so ensure we stay scheduled */
1380                 adaschedule(periph);
1381                 break;
1382         }
1383         case ADA_STATE_RAHEAD:
1384         case ADA_STATE_WCACHE:
1385         {
1386                 if (softc->flags & ADA_FLAG_PACK_INVALID) {
1387                         softc->state = ADA_STATE_NORMAL;
1388                         xpt_release_ccb(start_ccb);
1389                         cam_release_devq(periph->path,
1390                             RELSIM_RELEASE_RUNLEVEL, 0, CAM_RL_DEV + 1, FALSE);
1391                         adaschedule(periph);
1392                         cam_periph_release_locked(periph);
1393                         return;
1394                 }
1395
1396                 cam_fill_ataio(ataio,
1397                     1,
1398                     adadone,
1399                     CAM_DIR_NONE,
1400                     0,
1401                     NULL,
1402                     0,
1403                     ada_default_timeout*1000);
1404
1405                 if (softc->state == ADA_STATE_RAHEAD) {
1406                         ata_28bit_cmd(ataio, ATA_SETFEATURES, ADA_RA ?
1407                             ATA_SF_ENAB_RCACHE : ATA_SF_DIS_RCACHE, 0, 0);
1408                         start_ccb->ccb_h.ccb_state = ADA_CCB_RAHEAD;
1409                 } else {
1410                         ata_28bit_cmd(ataio, ATA_SETFEATURES, ADA_WC ?
1411                             ATA_SF_ENAB_WCACHE : ATA_SF_DIS_WCACHE, 0, 0);
1412                         start_ccb->ccb_h.ccb_state = ADA_CCB_WCACHE;
1413                 }
1414                 xpt_action(start_ccb);
1415                 break;
1416         }
1417         }
1418 }
1419
1420 static void
1421 adadone(struct cam_periph *periph, union ccb *done_ccb)
1422 {
1423         struct ada_softc *softc;
1424         struct ccb_ataio *ataio;
1425         struct ccb_getdev *cgd;
1426
1427         softc = (struct ada_softc *)periph->softc;
1428         ataio = &done_ccb->ataio;
1429         switch (ataio->ccb_h.ccb_state & ADA_CCB_TYPE_MASK) {
1430         case ADA_CCB_BUFFER_IO:
1431         case ADA_CCB_TRIM:
1432         {
1433                 struct bio *bp;
1434
1435                 bp = (struct bio *)done_ccb->ccb_h.ccb_bp;
1436                 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1437                         int error;
1438
1439                         error = adaerror(done_ccb, 0, 0);
1440                         if (error == ERESTART) {
1441                                 /* A retry was scheduled, so just return. */
1442                                 return;
1443                         }
1444                         if (error != 0) {
1445                                 if (error == ENXIO &&
1446                                     (softc->flags & ADA_FLAG_PACK_INVALID) == 0) {
1447                                         /*
1448                                          * Catastrophic error.  Mark our pack as
1449                                          * invalid.
1450                                          */
1451                                         /*
1452                                          * XXX See if this is really a media
1453                                          * XXX change first?
1454                                          */
1455                                         xpt_print(periph->path,
1456                                             "Invalidating pack\n");
1457                                         softc->flags |= ADA_FLAG_PACK_INVALID;
1458                                 }
1459                                 bp->bio_error = error;
1460                                 bp->bio_resid = bp->bio_bcount;
1461                                 bp->bio_flags |= BIO_ERROR;
1462                         } else {
1463                                 bp->bio_resid = ataio->resid;
1464                                 bp->bio_error = 0;
1465                                 if (bp->bio_resid != 0)
1466                                         bp->bio_flags |= BIO_ERROR;
1467                         }
1468                         if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
1469                                 cam_release_devq(done_ccb->ccb_h.path,
1470                                                  /*relsim_flags*/0,
1471                                                  /*reduction*/0,
1472                                                  /*timeout*/0,
1473                                                  /*getcount_only*/0);
1474                 } else {
1475                         if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
1476                                 panic("REQ_CMP with QFRZN");
1477                         bp->bio_resid = ataio->resid;
1478                         if (ataio->resid > 0)
1479                                 bp->bio_flags |= BIO_ERROR;
1480                 }
1481                 softc->outstanding_cmds--;
1482                 if (softc->outstanding_cmds == 0)
1483                         softc->flags |= ADA_FLAG_WENT_IDLE;
1484                 if ((ataio->ccb_h.ccb_state & ADA_CCB_TYPE_MASK) ==
1485                     ADA_CCB_TRIM) {
1486                         struct trim_request *req =
1487                             (struct trim_request *)ataio->data_ptr;
1488                         int i;
1489
1490                         for (i = 1; i < TRIM_MAX_BIOS && req->bps[i]; i++) {
1491                                 struct bio *bp1 = req->bps[i];
1492
1493                                 bp1->bio_resid = bp->bio_resid;
1494                                 bp1->bio_error = bp->bio_error;
1495                                 if (bp->bio_flags & BIO_ERROR)
1496                                         bp1->bio_flags |= BIO_ERROR;
1497                                 biodone(bp1);
1498                         }
1499                         softc->trim_running = 0;
1500                         biodone(bp);
1501                         adaschedule(periph);
1502                 } else
1503                         biodone(bp);
1504                 break;
1505         }
1506         case ADA_CCB_RAHEAD:
1507         {
1508                 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1509                         if (adaerror(done_ccb, 0, 0) == ERESTART) {
1510                                 return;
1511                         } else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
1512                                 cam_release_devq(done_ccb->ccb_h.path,
1513                                     /*relsim_flags*/0,
1514                                     /*reduction*/0,
1515                                     /*timeout*/0,
1516                                     /*getcount_only*/0);
1517                         }
1518                 }
1519
1520                 /*
1521                  * Since our peripheral may be invalidated by an error
1522                  * above or an external event, we must release our CCB
1523                  * before releasing the reference on the peripheral.
1524                  * The peripheral will only go away once the last reference
1525                  * is removed, and we need it around for the CCB release
1526                  * operation.
1527                  */
1528                 cgd = (struct ccb_getdev *)done_ccb;
1529                 xpt_setup_ccb(&cgd->ccb_h, periph->path, CAM_PRIORITY_NORMAL);
1530                 cgd->ccb_h.func_code = XPT_GDEV_TYPE;
1531                 xpt_action((union ccb *)cgd);
1532                 if (ADA_WC >= 0 &&
1533                     cgd->ident_data.support.command1 & ATA_SUPPORT_WRITECACHE) {
1534                         softc->state = ADA_STATE_WCACHE;
1535                         xpt_release_ccb(done_ccb);
1536                         xpt_schedule(periph, CAM_PRIORITY_DEV);
1537                         return;
1538                 }
1539                 softc->state = ADA_STATE_NORMAL;
1540                 xpt_release_ccb(done_ccb);
1541                 cam_release_devq(periph->path,
1542                     RELSIM_RELEASE_RUNLEVEL, 0, CAM_RL_DEV + 1, FALSE);
1543                 adaschedule(periph);
1544                 cam_periph_release_locked(periph);
1545                 return;
1546         }
1547         case ADA_CCB_WCACHE:
1548         {
1549                 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1550                         if (adaerror(done_ccb, 0, 0) == ERESTART) {
1551                                 return;
1552                         } else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
1553                                 cam_release_devq(done_ccb->ccb_h.path,
1554                                     /*relsim_flags*/0,
1555                                     /*reduction*/0,
1556                                     /*timeout*/0,
1557                                     /*getcount_only*/0);
1558                         }
1559                 }
1560
1561                 softc->state = ADA_STATE_NORMAL;
1562                 /*
1563                  * Since our peripheral may be invalidated by an error
1564                  * above or an external event, we must release our CCB
1565                  * before releasing the reference on the peripheral.
1566                  * The peripheral will only go away once the last reference
1567                  * is removed, and we need it around for the CCB release
1568                  * operation.
1569                  */
1570                 xpt_release_ccb(done_ccb);
1571                 cam_release_devq(periph->path,
1572                     RELSIM_RELEASE_RUNLEVEL, 0, CAM_RL_DEV + 1, FALSE);
1573                 adaschedule(periph);
1574                 cam_periph_release_locked(periph);
1575                 return;
1576         }
1577         case ADA_CCB_WAITING:
1578         {
1579                 /* Caller will release the CCB */
1580                 wakeup(&done_ccb->ccb_h.cbfcnp);
1581                 return;
1582         }
1583         case ADA_CCB_DUMP:
1584                 /* No-op.  We're polling */
1585                 return;
1586         default:
1587                 break;
1588         }
1589         xpt_release_ccb(done_ccb);
1590 }
1591
1592 static int
1593 adaerror(union ccb *ccb, u_int32_t cam_flags, u_int32_t sense_flags)
1594 {
1595
1596         return(cam_periph_error(ccb, cam_flags, sense_flags, NULL));
1597 }
1598
1599 static void
1600 adagetparams(struct cam_periph *periph, struct ccb_getdev *cgd)
1601 {
1602         struct ada_softc *softc = (struct ada_softc *)periph->softc;
1603         struct disk_params *dp = &softc->params;
1604         u_int64_t lbasize48;
1605         u_int32_t lbasize;
1606
1607         dp->secsize = ata_logical_sector_size(&cgd->ident_data);
1608         if ((cgd->ident_data.atavalid & ATA_FLAG_54_58) &&
1609                 cgd->ident_data.current_heads && cgd->ident_data.current_sectors) {
1610                 dp->heads = cgd->ident_data.current_heads;
1611                 dp->secs_per_track = cgd->ident_data.current_sectors;
1612                 dp->cylinders = cgd->ident_data.cylinders;
1613                 dp->sectors = (u_int32_t)cgd->ident_data.current_size_1 |
1614                           ((u_int32_t)cgd->ident_data.current_size_2 << 16);
1615         } else {
1616                 dp->heads = cgd->ident_data.heads;
1617                 dp->secs_per_track = cgd->ident_data.sectors;
1618                 dp->cylinders = cgd->ident_data.cylinders;
1619                 dp->sectors = cgd->ident_data.cylinders * dp->heads * dp->secs_per_track;
1620         }
1621         lbasize = (u_int32_t)cgd->ident_data.lba_size_1 |
1622                   ((u_int32_t)cgd->ident_data.lba_size_2 << 16);
1623
1624         /* use the 28bit LBA size if valid or bigger than the CHS mapping */
1625         if (cgd->ident_data.cylinders == 16383 || dp->sectors < lbasize)
1626                 dp->sectors = lbasize;
1627
1628         /* use the 48bit LBA size if valid */
1629         lbasize48 = ((u_int64_t)cgd->ident_data.lba_size48_1) |
1630                     ((u_int64_t)cgd->ident_data.lba_size48_2 << 16) |
1631                     ((u_int64_t)cgd->ident_data.lba_size48_3 << 32) |
1632                     ((u_int64_t)cgd->ident_data.lba_size48_4 << 48);
1633         if ((cgd->ident_data.support.command2 & ATA_SUPPORT_ADDRESS48) &&
1634             lbasize48 > ATA_MAX_28BIT_LBA)
1635                 dp->sectors = lbasize48;
1636 }
1637
1638 static void
1639 adasendorderedtag(void *arg)
1640 {
1641         struct ada_softc *softc = arg;
1642
1643         if (ada_send_ordered) {
1644                 if ((softc->ordered_tag_count == 0)
1645                  && ((softc->flags & ADA_FLAG_WENT_IDLE) == 0)) {
1646                         softc->flags |= ADA_FLAG_NEED_OTAG;
1647                 }
1648                 if (softc->outstanding_cmds > 0)
1649                         softc->flags &= ~ADA_FLAG_WENT_IDLE;
1650
1651                 softc->ordered_tag_count = 0;
1652         }
1653         /* Queue us up again */
1654         callout_reset(&softc->sendordered_c,
1655             (ada_default_timeout * hz) / ADA_ORDEREDTAG_INTERVAL,
1656             adasendorderedtag, softc);
1657 }
1658
1659 /*
1660  * Step through all ADA peripheral drivers, and if the device is still open,
1661  * sync the disk cache to physical media.
1662  */
1663 static void
1664 adaflush(void)
1665 {
1666         struct cam_periph *periph;
1667         struct ada_softc *softc;
1668
1669         TAILQ_FOREACH(periph, &adadriver.units, unit_links) {
1670                 union ccb ccb;
1671
1672                 /* If we paniced with lock held - not recurse here. */
1673                 if (cam_periph_owned(periph))
1674                         continue;
1675                 cam_periph_lock(periph);
1676                 softc = (struct ada_softc *)periph->softc;
1677                 /*
1678                  * We only sync the cache if the drive is still open, and
1679                  * if the drive is capable of it..
1680                  */
1681                 if (((softc->flags & ADA_FLAG_OPEN) == 0) ||
1682                     (softc->flags & ADA_FLAG_CAN_FLUSHCACHE) == 0) {
1683                         cam_periph_unlock(periph);
1684                         continue;
1685                 }
1686
1687                 xpt_setup_ccb(&ccb.ccb_h, periph->path, CAM_PRIORITY_NORMAL);
1688
1689                 ccb.ccb_h.ccb_state = ADA_CCB_DUMP;
1690                 cam_fill_ataio(&ccb.ataio,
1691                                     1,
1692                                     adadone,
1693                                     CAM_DIR_NONE,
1694                                     0,
1695                                     NULL,
1696                                     0,
1697                                     ada_default_timeout*1000);
1698
1699                 if (softc->flags & ADA_FLAG_CAN_48BIT)
1700                         ata_48bit_cmd(&ccb.ataio, ATA_FLUSHCACHE48, 0, 0, 0);
1701                 else
1702                         ata_28bit_cmd(&ccb.ataio, ATA_FLUSHCACHE, 0, 0, 0);
1703                 xpt_polled_action(&ccb);
1704
1705                 if ((ccb.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP)
1706                         xpt_print(periph->path, "Synchronize cache failed\n");
1707
1708                 if ((ccb.ccb_h.status & CAM_DEV_QFRZN) != 0)
1709                         cam_release_devq(ccb.ccb_h.path,
1710                                          /*relsim_flags*/0,
1711                                          /*reduction*/0,
1712                                          /*timeout*/0,
1713                                          /*getcount_only*/0);
1714                 cam_periph_unlock(periph);
1715         }
1716 }
1717
1718 static void
1719 adaspindown(uint8_t cmd, int flags)
1720 {
1721         struct cam_periph *periph;
1722         struct ada_softc *softc;
1723
1724         TAILQ_FOREACH(periph, &adadriver.units, unit_links) {
1725                 union ccb ccb;
1726
1727                 /* If we paniced with lock held - not recurse here. */
1728                 if (cam_periph_owned(periph))
1729                         continue;
1730                 cam_periph_lock(periph);
1731                 softc = (struct ada_softc *)periph->softc;
1732                 /*
1733                  * We only spin-down the drive if it is capable of it..
1734                  */
1735                 if ((softc->flags & ADA_FLAG_CAN_POWERMGT) == 0) {
1736                         cam_periph_unlock(periph);
1737                         continue;
1738                 }
1739
1740                 if (bootverbose)
1741                         xpt_print(periph->path, "spin-down\n");
1742
1743                 xpt_setup_ccb(&ccb.ccb_h, periph->path, CAM_PRIORITY_NORMAL);
1744
1745                 ccb.ccb_h.ccb_state = ADA_CCB_DUMP;
1746                 cam_fill_ataio(&ccb.ataio,
1747                                     1,
1748                                     adadone,
1749                                     CAM_DIR_NONE | flags,
1750                                     0,
1751                                     NULL,
1752                                     0,
1753                                     ada_default_timeout*1000);
1754
1755                 ata_28bit_cmd(&ccb.ataio, cmd, 0, 0, 0);
1756                 xpt_polled_action(&ccb);
1757
1758                 if ((ccb.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP)
1759                         xpt_print(periph->path, "Spin-down disk failed\n");
1760
1761                 if ((ccb.ccb_h.status & CAM_DEV_QFRZN) != 0)
1762                         cam_release_devq(ccb.ccb_h.path,
1763                                          /*relsim_flags*/0,
1764                                          /*reduction*/0,
1765                                          /*timeout*/0,
1766                                          /*getcount_only*/0);
1767                 cam_periph_unlock(periph);
1768         }
1769 }
1770
1771 static void
1772 adashutdown(void *arg, int howto)
1773 {
1774
1775         adaflush();
1776         if (ada_spindown_shutdown != 0 &&
1777             (howto & (RB_HALT | RB_POWEROFF)) != 0)
1778                 adaspindown(ATA_STANDBY_IMMEDIATE, 0);
1779 }
1780
1781 static void
1782 adasuspend(void *arg)
1783 {
1784
1785         adaflush();
1786         if (ada_spindown_suspend != 0)
1787                 adaspindown(ATA_SLEEP, CAM_DEV_QFREEZE);
1788 }
1789
1790 static void
1791 adaresume(void *arg)
1792 {
1793         struct cam_periph *periph;
1794         struct ada_softc *softc;
1795
1796         if (ada_spindown_suspend == 0)
1797                 return;
1798
1799         TAILQ_FOREACH(periph, &adadriver.units, unit_links) {
1800                 cam_periph_lock(periph);
1801                 softc = (struct ada_softc *)periph->softc;
1802                 /*
1803                  * We only spin-down the drive if it is capable of it..
1804                  */
1805                 if ((softc->flags & ADA_FLAG_CAN_POWERMGT) == 0) {
1806                         cam_periph_unlock(periph);
1807                         continue;
1808                 }
1809
1810                 if (bootverbose)
1811                         xpt_print(periph->path, "resume\n");
1812
1813                 /*
1814                  * Drop freeze taken due to CAM_DEV_QFREEZE flag set on
1815                  * sleep request.
1816                  */
1817                 cam_release_devq(periph->path,
1818                          /*relsim_flags*/0,
1819                          /*openings*/0,
1820                          /*timeout*/0,
1821                          /*getcount_only*/0);
1822
1823                 cam_periph_unlock(periph);
1824         }
1825 }
1826
1827 #endif /* _KERNEL */