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_WCACHE,
  73         ADA_STATE_NORMAL
  74 } ada_state;
  75
  76 typedef enum {
  77         ADA_FLAG_PACK_INVALID   = 0x001,
  78         ADA_FLAG_CAN_48BIT      = 0x002,
  79         ADA_FLAG_CAN_FLUSHCACHE = 0x004,
  80         ADA_FLAG_CAN_NCQ        = 0x008,
  81         ADA_FLAG_CAN_DMA        = 0x010,
  82         ADA_FLAG_NEED_OTAG      = 0x020,
  83         ADA_FLAG_WENT_IDLE      = 0x040,
  84         ADA_FLAG_CAN_TRIM       = 0x080,
  85         ADA_FLAG_OPEN           = 0x100,
  86         ADA_FLAG_SCTX_INIT      = 0x200,
  87         ADA_FLAG_CAN_CFA        = 0x400,
  88         ADA_FLAG_CAN_POWERMGT   = 0x800
  89 } ada_flags;
  90
  91 typedef enum {
  92         ADA_Q_NONE              = 0x00,
  93         ADA_Q_4K                = 0x01,
  94 } ada_quirks;
  95
  96 typedef enum {
  97         ADA_CCB_WCACHE          = 0x01,
  98         ADA_CCB_BUFFER_IO       = 0x03,
  99         ADA_CCB_WAITING         = 0x04,
 100         ADA_CCB_DUMP            = 0x05,
 101         ADA_CCB_TRIM            = 0x06,
 102         ADA_CCB_TYPE_MASK       = 0x0F,
 103 } ada_ccb_state;
 104
 105 /* Offsets into our private area for storing information */
 106 #define ccb_state       ppriv_field0
 107 #define ccb_bp          ppriv_ptr1
 108
 109 struct disk_params {
 110         u_int8_t  heads;
 111         u_int8_t  secs_per_track;
 112         u_int32_t cylinders;
 113         u_int32_t secsize;      /* Number of bytes/logical sector */
 114         u_int64_t sectors;      /* Total number sectors */
 115 };
 116
 117 #define TRIM_MAX_BLOCKS 8
 118 #define TRIM_MAX_RANGES (TRIM_MAX_BLOCKS * 64)
 119 #define TRIM_MAX_BIOS   (TRIM_MAX_RANGES * 4)
 120 struct trim_request {
 121         uint8_t         data[TRIM_MAX_RANGES * 8];
 122         struct bio      *bps[TRIM_MAX_BIOS];
 123 };
 124
 125 struct ada_softc {
 126         struct   bio_queue_head bio_queue;
 127         struct   bio_queue_head trim_queue;
 128         ada_state state;
 129         ada_flags flags;
 130         ada_quirks quirks;
 131         int      ordered_tag_count;
 132         int      outstanding_cmds;
 133         int      trim_max_ranges;
 134         int      trim_running;
 135         int      write_cache;
 136 #ifdef ADA_TEST_FAILURE
 137         int      force_read_error;
 138         int      force_write_error;
 139         int      periodic_read_error;
 140         int      periodic_read_count;
 141 #endif
 142         struct   disk_params params;
 143         struct   disk *disk;
 144         struct task             sysctl_task;
 145         struct sysctl_ctx_list  sysctl_ctx;
 146         struct sysctl_oid       *sysctl_tree;
 147         struct callout          sendordered_c;
 148         struct trim_request     trim_req;
 149 };
 150
 151 struct ada_quirk_entry {
 152         struct scsi_inquiry_pattern inq_pat;
 153         ada_quirks quirks;
 154 };
 155
 156 static struct ada_quirk_entry ada_quirk_table[] =
 157 {
 158         {
 159                 /* Hitachi Advanced Format (4k) drives */
 160                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "Hitachi H??????????E3*", "*" },
 161                 /*quirks*/ADA_Q_4K
 162         },
 163         {
 164                 /* Samsung Advanced Format (4k) drives */
 165                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "SAMSUNG HD204UI*", "*" },
 166                 /*quirks*/ADA_Q_4K
 167         },
 168         {
 169                 /* Seagate Barracuda Green Advanced Format (4k) drives */
 170                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "ST????DL*", "*" },
 171                 /*quirks*/ADA_Q_4K
 172         },
 173         {
 174                 /* Seagate Momentus Advanced Format (4k) drives */
 175                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "ST9500423AS*", "*" },
 176                 /*quirks*/ADA_Q_4K
 177         },
 178         {
 179                 /* Seagate Momentus Advanced Format (4k) drives */
 180                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "ST9500424AS*", "*" },
 181                 /*quirks*/ADA_Q_4K
 182         },
 183         {
 184                 /* Seagate Momentus Advanced Format (4k) drives */
 185                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "ST9750420AS*", "*" },
 186                 /*quirks*/ADA_Q_4K
 187         },
 188         {
 189                 /* Seagate Momentus Advanced Format (4k) drives */
 190                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "ST9750422AS*", "*" },
 191                 /*quirks*/ADA_Q_4K
 192         },
 193         {
 194                 /* Seagate Momentus Thin Advanced Format (4k) drives */
 195                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "ST???LT*", "*" },
 196                 /*quirks*/ADA_Q_4K
 197         },
 198         {
 199                 /* WDC Caviar Green Advanced Format (4k) drives */
 200                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "WDC WD????RS*", "*" },
 201                 /*quirks*/ADA_Q_4K
 202         },
 203         {
 204                 /* WDC Caviar Green Advanced Format (4k) drives */
 205                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "WDC WD????RX*", "*" },
 206                 /*quirks*/ADA_Q_4K
 207         },
 208         {
 209                 /* WDC Caviar Green Advanced Format (4k) drives */
 210                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "WDC WD??????RS*", "*" },
 211                 /*quirks*/ADA_Q_4K
 212         },
 213         {
 214                 /* WDC Caviar Green Advanced Format (4k) drives */
 215                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "WDC WD??????RX*", "*" },
 216                 /*quirks*/ADA_Q_4K
 217         },
 218         {
 219                 /* WDC Scorpio Black Advanced Format (4k) drives */
 220                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "WDC WD???PKT*", "*" },
 221                 /*quirks*/ADA_Q_4K
 222         },
 223         {
 224                 /* WDC Scorpio Black Advanced Format (4k) drives */
 225                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "WDC WD?????PKT*", "*" },
 226                 /*quirks*/ADA_Q_4K
 227         },
 228         {
 229                 /* WDC Scorpio Blue Advanced Format (4k) drives */
 230                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "WDC WD???PVT*", "*" },
 231                 /*quirks*/ADA_Q_4K
 232         },
 233         {
 234                 /* WDC Scorpio Blue Advanced Format (4k) drives */
 235                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "WDC WD?????PVT*", "*" },
 236                 /*quirks*/ADA_Q_4K
 237         },
 238         {
 239                 /* Default */
 240                 {
 241                   T_ANY, SIP_MEDIA_REMOVABLE|SIP_MEDIA_FIXED,
 242                   /*vendor*/"*", /*product*/"*", /*revision*/"*"
 243                 },
 244                 /*quirks*/0
 245         },
 246 };
 247
 248 static  disk_strategy_t adastrategy;
 249 static  dumper_t        adadump;
 250 static  periph_init_t   adainit;
 251 static  void            adaasync(void *callback_arg, u_int32_t code,
 252                                 struct cam_path *path, void *arg);
 253 static  void            adasysctlinit(void *context, int pending);
 254 static  periph_ctor_t   adaregister;
 255 static  periph_dtor_t   adacleanup;
 256 static  periph_start_t  adastart;
 257 static  periph_oninv_t  adaoninvalidate;
 258 static  void            adadone(struct cam_periph *periph,
 259                                union ccb *done_ccb);
 260 static  int             adaerror(union ccb *ccb, u_int32_t cam_flags,
 261                                 u_int32_t sense_flags);
 262 static void             adagetparams(struct cam_periph *periph,
 263                                 struct ccb_getdev *cgd);
 264 static timeout_t        adasendorderedtag;
 265 static void             adashutdown(void *arg, int howto);
 266 static void             adasuspend(void *arg);
 267 static void             adaresume(void *arg);
 268
 269 #ifndef ADA_DEFAULT_LEGACY_ALIASES
 270 #ifdef ATA_CAM
 271 #define ADA_DEFAULT_LEGACY_ALIASES      1
 272 #else
 273 #define ADA_DEFAULT_LEGACY_ALIASES      0
 274 #endif
 275 #endif
 276
 277 #ifndef ADA_DEFAULT_TIMEOUT
 278 #define ADA_DEFAULT_TIMEOUT 30  /* Timeout in seconds */
 279 #endif
 280
 281 #ifndef ADA_DEFAULT_RETRY
 282 #define ADA_DEFAULT_RETRY       4
 283 #endif
 284
 285 #ifndef ADA_DEFAULT_SEND_ORDERED
 286 #define ADA_DEFAULT_SEND_ORDERED        1
 287 #endif
 288
 289 #ifndef ADA_DEFAULT_SPINDOWN_SHUTDOWN
 290 #define ADA_DEFAULT_SPINDOWN_SHUTDOWN   1
 291 #endif
 292
 293 #ifndef ADA_DEFAULT_SPINDOWN_SUSPEND
 294 #define ADA_DEFAULT_SPINDOWN_SUSPEND    1
 295 #endif
 296
 297 #ifndef ADA_DEFAULT_WRITE_CACHE
 298 #define ADA_DEFAULT_WRITE_CACHE 1
 299 #endif
 300
 301 /*
 302  * Most platforms map firmware geometry to actual, but some don't.  If
 303  * not overridden, default to nothing.
 304  */
 305 #ifndef ata_disk_firmware_geom_adjust
 306 #define ata_disk_firmware_geom_adjust(disk)
 307 #endif
 308
 309 static int ada_legacy_aliases = ADA_DEFAULT_LEGACY_ALIASES;
 310 static int ada_retry_count = ADA_DEFAULT_RETRY;
 311 static int ada_default_timeout = ADA_DEFAULT_TIMEOUT;
 312 static int ada_send_ordered = ADA_DEFAULT_SEND_ORDERED;
 313 static int ada_spindown_shutdown = ADA_DEFAULT_SPINDOWN_SHUTDOWN;
 314 static int ada_spindown_suspend = ADA_DEFAULT_SPINDOWN_SUSPEND;
 315 static int ada_write_cache = ADA_DEFAULT_WRITE_CACHE;
 316
 317 SYSCTL_NODE(_kern_cam, OID_AUTO, ada, CTLFLAG_RD, 0,
 318             "CAM Direct Access Disk driver");
 319 SYSCTL_INT(_kern_cam_ada, OID_AUTO, legacy_aliases, CTLFLAG_RW,
 320            &ada_legacy_aliases, 0, "Create legacy-like device aliases");
 321 TUNABLE_INT("kern.cam.ada.legacy_aliases", &ada_legacy_aliases);
 322 SYSCTL_INT(_kern_cam_ada, OID_AUTO, retry_count, CTLFLAG_RW,
 323            &ada_retry_count, 0, "Normal I/O retry count");
 324 TUNABLE_INT("kern.cam.ada.retry_count", &ada_retry_count);
 325 SYSCTL_INT(_kern_cam_ada, OID_AUTO, default_timeout, CTLFLAG_RW,
 326            &ada_default_timeout, 0, "Normal I/O timeout (in seconds)");
 327 TUNABLE_INT("kern.cam.ada.default_timeout", &ada_default_timeout);
 328 SYSCTL_INT(_kern_cam_ada, OID_AUTO, ada_send_ordered, CTLFLAG_RW,
 329            &ada_send_ordered, 0, "Send Ordered Tags");
 330 TUNABLE_INT("kern.cam.ada.ada_send_ordered", &ada_send_ordered);
 331 SYSCTL_INT(_kern_cam_ada, OID_AUTO, spindown_shutdown, CTLFLAG_RW,
 332            &ada_spindown_shutdown, 0, "Spin down upon shutdown");
 333 TUNABLE_INT("kern.cam.ada.spindown_shutdown", &ada_spindown_shutdown);
 334 SYSCTL_INT(_kern_cam_ada, OID_AUTO, spindown_suspend, CTLFLAG_RW,
 335            &ada_spindown_suspend, 0, "Spin down upon suspend");
 336 TUNABLE_INT("kern.cam.ada.spindown_suspend", &ada_spindown_suspend);
 337 SYSCTL_INT(_kern_cam_ada, OID_AUTO, write_cache, CTLFLAG_RW,
 338            &ada_write_cache, 0, "Enable disk write cache");
 339 TUNABLE_INT("kern.cam.ada.write_cache", &ada_write_cache);
 340
 341 /*
 342  * ADA_ORDEREDTAG_INTERVAL determines how often, relative
 343  * to the default timeout, we check to see whether an ordered
 344  * tagged transaction is appropriate to prevent simple tag
 345  * starvation.  Since we'd like to ensure that there is at least
 346  * 1/2 of the timeout length left for a starved transaction to
 347  * complete after we've sent an ordered tag, we must poll at least
 348  * four times in every timeout period.  This takes care of the worst
 349  * case where a starved transaction starts during an interval that
 350  * meets the requirement "don't send an ordered tag" test so it takes
 351  * us two intervals to determine that a tag must be sent.
 352  */
 353 #ifndef ADA_ORDEREDTAG_INTERVAL
 354 #define ADA_ORDEREDTAG_INTERVAL 4
 355 #endif
 356
 357 static struct periph_driver adadriver =
 358 {
 359         adainit, "ada",
 360         TAILQ_HEAD_INITIALIZER(adadriver.units), /* generation */ 0
 361 };
 362
 363 PERIPHDRIVER_DECLARE(ada, adadriver);
 364
 365 MALLOC_DEFINE(M_ATADA, "ata_da", "ata_da buffers");
 366
 367 static int
 368 adaopen(struct disk *dp)
 369 {
 370         struct cam_periph *periph;
 371         struct ada_softc *softc;
 372         int error;
 373
 374         periph = (struct cam_periph *)dp->d_drv1;
 375         if (periph == NULL) {
 376                 return (ENXIO);
 377         }
 378
 379         if (cam_periph_acquire(periph) != CAM_REQ_CMP) {
 380                 return(ENXIO);
 381         }
 382
 383         cam_periph_lock(periph);
 384         if ((error = cam_periph_hold(periph, PRIBIO|PCATCH)) != 0) {
 385                 cam_periph_unlock(periph);
 386                 cam_periph_release(periph);
 387                 return (error);
 388         }
 389
 390         softc = (struct ada_softc *)periph->softc;
 391         softc->flags |= ADA_FLAG_OPEN;
 392
 393         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE,
 394             ("adaopen: disk=%s%d (unit %d)\n", dp->d_name, dp->d_unit,
 395              periph->unit_number));
 396
 397         if ((softc->flags & ADA_FLAG_PACK_INVALID) != 0) {
 398                 /* Invalidate our pack information. */
 399                 softc->flags &= ~ADA_FLAG_PACK_INVALID;
 400         }
 401
 402         cam_periph_unhold(periph);
 403         cam_periph_unlock(periph);
 404         return (0);
 405 }
 406
 407 static int
 408 adaclose(struct disk *dp)
 409 {
 410         struct  cam_periph *periph;
 411         struct  ada_softc *softc;
 412         union ccb *ccb;
 413         int error;
 414
 415         periph = (struct cam_periph *)dp->d_drv1;
 416         if (periph == NULL)
 417                 return (ENXIO);
 418
 419         cam_periph_lock(periph);
 420         if ((error = cam_periph_hold(periph, PRIBIO)) != 0) {
 421                 cam_periph_unlock(periph);
 422                 cam_periph_release(periph);
 423                 return (error);
 424         }
 425
 426         softc = (struct ada_softc *)periph->softc;
 427         /* We only sync the cache if the drive is capable of it. */
 428         if (softc->flags & ADA_FLAG_CAN_FLUSHCACHE) {
 429
 430                 ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL);
 431                 cam_fill_ataio(&ccb->ataio,
 432                                     1,
 433                                     adadone,
 434                                     CAM_DIR_NONE,
 435                                     0,
 436                                     NULL,
 437                                     0,
 438                                     ada_default_timeout*1000);
 439
 440                 if (softc->flags & ADA_FLAG_CAN_48BIT)
 441                         ata_48bit_cmd(&ccb->ataio, ATA_FLUSHCACHE48, 0, 0, 0);
 442                 else
 443                         ata_28bit_cmd(&ccb->ataio, ATA_FLUSHCACHE, 0, 0, 0);
 444                 cam_periph_runccb(ccb, /*error_routine*/NULL, /*cam_flags*/0,
 445                     /*sense_flags*/0, softc->disk->d_devstat);
 446
 447                 if ((ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP)
 448                         xpt_print(periph->path, "Synchronize cache failed\n");
 449
 450                 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
 451                         cam_release_devq(ccb->ccb_h.path,
 452                                          /*relsim_flags*/0,
 453                                          /*reduction*/0,
 454                                          /*timeout*/0,
 455                                          /*getcount_only*/0);
 456                 xpt_release_ccb(ccb);
 457         }
 458
 459         softc->flags &= ~ADA_FLAG_OPEN;
 460         cam_periph_unhold(periph);
 461         cam_periph_unlock(periph);
 462         cam_periph_release(periph);
 463         return (0);
 464 }
 465
 466 static void
 467 adaschedule(struct cam_periph *periph)
 468 {
 469         struct ada_softc *softc = (struct ada_softc *)periph->softc;
 470
 471         if (bioq_first(&softc->bio_queue) ||
 472             (!softc->trim_running && bioq_first(&softc->trim_queue))) {
 473                 /* Have more work to do, so ensure we stay scheduled */
 474                 xpt_schedule(periph, CAM_PRIORITY_NORMAL);
 475         }
 476 }
 477
 478 /*
 479  * Actually translate the requested transfer into one the physical driver
 480  * can understand.  The transfer is described by a buf and will include
 481  * only one physical transfer.
 482  */
 483 static void
 484 adastrategy(struct bio *bp)
 485 {
 486         struct cam_periph *periph;
 487         struct ada_softc *softc;
 488
 489         periph = (struct cam_periph *)bp->bio_disk->d_drv1;
 490         if (periph == NULL) {
 491                 biofinish(bp, NULL, ENXIO);
 492                 return;
 493         }
 494         softc = (struct ada_softc *)periph->softc;
 495
 496         cam_periph_lock(periph);
 497
 498         /*
 499          * If the device has been made invalid, error out
 500          */
 501         if ((softc->flags & ADA_FLAG_PACK_INVALID)) {
 502                 cam_periph_unlock(periph);
 503                 biofinish(bp, NULL, ENXIO);
 504                 return;
 505         }
 506
 507         /*
 508          * Place it in the queue of disk activities for this disk
 509          */
 510         if (bp->bio_cmd == BIO_DELETE &&
 511             (softc->flags & ADA_FLAG_CAN_TRIM))
 512                 bioq_disksort(&softc->trim_queue, bp);
 513         else
 514                 bioq_disksort(&softc->bio_queue, bp);
 515
 516         /*
 517          * Schedule ourselves for performing the work.
 518          */
 519         adaschedule(periph);
 520         cam_periph_unlock(periph);
 521
 522         return;
 523 }
 524
 525 static int
 526 adadump(void *arg, void *virtual, vm_offset_t physical, off_t offset, size_t length)
 527 {
 528         struct      cam_periph *periph;
 529         struct      ada_softc *softc;
 530         u_int       secsize;
 531         union       ccb ccb;
 532         struct      disk *dp;
 533         uint64_t    lba;
 534         uint16_t    count;
 535
 536         dp = arg;
 537         periph = dp->d_drv1;
 538         if (periph == NULL)
 539                 return (ENXIO);
 540         softc = (struct ada_softc *)periph->softc;
 541         cam_periph_lock(periph);
 542         secsize = softc->params.secsize;
 543         lba = offset / secsize;
 544         count = length / secsize;
 545
 546         if ((softc->flags & ADA_FLAG_PACK_INVALID) != 0) {
 547                 cam_periph_unlock(periph);
 548                 return (ENXIO);
 549         }
 550
 551         if (length > 0) {
 552                 xpt_setup_ccb(&ccb.ccb_h, periph->path, CAM_PRIORITY_NORMAL);
 553                 ccb.ccb_h.ccb_state = ADA_CCB_DUMP;
 554                 cam_fill_ataio(&ccb.ataio,
 555                     0,
 556                     adadone,
 557                     CAM_DIR_OUT,
 558                     0,
 559                     (u_int8_t *) virtual,
 560                     length,
 561                     ada_default_timeout*1000);
 562                 if ((softc->flags & ADA_FLAG_CAN_48BIT) &&
 563                     (lba + count >= ATA_MAX_28BIT_LBA ||
 564                     count >= 256)) {
 565                         ata_48bit_cmd(&ccb.ataio, ATA_WRITE_DMA48,
 566                             0, lba, count);
 567                 } else {
 568                         ata_28bit_cmd(&ccb.ataio, ATA_WRITE_DMA,
 569                             0, lba, count);
 570                 }
 571                 xpt_polled_action(&ccb);
 572
 573                 if ((ccb.ataio.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
 574                         printf("Aborting dump due to I/O error.\n");
 575                         cam_periph_unlock(periph);
 576                         return(EIO);
 577                 }
 578                 cam_periph_unlock(periph);
 579                 return(0);
 580         }
 581
 582         if (softc->flags & ADA_FLAG_CAN_FLUSHCACHE) {
 583                 xpt_setup_ccb(&ccb.ccb_h, periph->path, CAM_PRIORITY_NORMAL);
 584
 585                 ccb.ccb_h.ccb_state = ADA_CCB_DUMP;
 586                 cam_fill_ataio(&ccb.ataio,
 587                                     1,
 588                                     adadone,
 589                                     CAM_DIR_NONE,
 590                                     0,
 591                                     NULL,
 592                                     0,
 593                                     ada_default_timeout*1000);
 594
 595                 if (softc->flags & ADA_FLAG_CAN_48BIT)
 596                         ata_48bit_cmd(&ccb.ataio, ATA_FLUSHCACHE48, 0, 0, 0);
 597                 else
 598                         ata_28bit_cmd(&ccb.ataio, ATA_FLUSHCACHE, 0, 0, 0);
 599                 xpt_polled_action(&ccb);
 600
 601                 if ((ccb.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP)
 602                         xpt_print(periph->path, "Synchronize cache failed\n");
 603
 604                 if ((ccb.ccb_h.status & CAM_DEV_QFRZN) != 0)
 605                         cam_release_devq(ccb.ccb_h.path,
 606                                          /*relsim_flags*/0,
 607                                          /*reduction*/0,
 608                                          /*timeout*/0,
 609                                          /*getcount_only*/0);
 610         }
 611         cam_periph_unlock(periph);
 612         return (0);
 613 }
 614
 615 static void
 616 adainit(void)
 617 {
 618         cam_status status;
 619
 620         /*
 621          * Install a global async callback.  This callback will
 622          * receive async callbacks like "new device found".
 623          */
 624         status = xpt_register_async(AC_FOUND_DEVICE, adaasync, NULL, NULL);
 625
 626         if (status != CAM_REQ_CMP) {
 627                 printf("ada: Failed to attach master async callback "
 628                        "due to status 0x%x!\n", status);
 629         } else if (ada_send_ordered) {
 630
 631                 /* Register our event handlers */
 632                 if ((EVENTHANDLER_REGISTER(power_suspend, adasuspend,
 633                                            NULL, EVENTHANDLER_PRI_LAST)) == NULL)
 634                     printf("adainit: power event registration failed!\n");
 635                 if ((EVENTHANDLER_REGISTER(power_resume, adaresume,
 636                                            NULL, EVENTHANDLER_PRI_LAST)) == NULL)
 637                     printf("adainit: power event registration failed!\n");
 638                 if ((EVENTHANDLER_REGISTER(shutdown_post_sync, adashutdown,
 639                                            NULL, SHUTDOWN_PRI_DEFAULT)) == NULL)
 640                     printf("adainit: shutdown event registration failed!\n");
 641         }
 642 }
 643
 644 static void
 645 adaoninvalidate(struct cam_periph *periph)
 646 {
 647         struct ada_softc *softc;
 648
 649         softc = (struct ada_softc *)periph->softc;
 650
 651         /*
 652          * De-register any async callbacks.
 653          */
 654         xpt_register_async(0, adaasync, periph, periph->path);
 655
 656         softc->flags |= ADA_FLAG_PACK_INVALID;
 657
 658         /*
 659          * Return all queued I/O with ENXIO.
 660          * XXX Handle any transactions queued to the card
 661          *     with XPT_ABORT_CCB.
 662          */
 663         bioq_flush(&softc->bio_queue, NULL, ENXIO);
 664         bioq_flush(&softc->trim_queue, NULL, ENXIO);
 665
 666         disk_gone(softc->disk);
 667         xpt_print(periph->path, "lost device\n");
 668 }
 669
 670 static void
 671 adacleanup(struct cam_periph *periph)
 672 {
 673         struct ada_softc *softc;
 674
 675         softc = (struct ada_softc *)periph->softc;
 676
 677         xpt_print(periph->path, "removing device entry\n");
 678         cam_periph_unlock(periph);
 679
 680         /*
 681          * If we can't free the sysctl tree, oh well...
 682          */
 683         if ((softc->flags & ADA_FLAG_SCTX_INIT) != 0
 684             && sysctl_ctx_free(&softc->sysctl_ctx) != 0) {
 685                 xpt_print(periph->path, "can't remove sysctl context\n");
 686         }
 687
 688         disk_destroy(softc->disk);
 689         callout_drain(&softc->sendordered_c);
 690         free(softc, M_DEVBUF);
 691         cam_periph_lock(periph);
 692 }
 693
 694 static void
 695 adaasync(void *callback_arg, u_int32_t code,
 696         struct cam_path *path, void *arg)
 697 {
 698         struct cam_periph *periph;
 699         struct ada_softc *softc;
 700
 701         periph = (struct cam_periph *)callback_arg;
 702         switch (code) {
 703         case AC_FOUND_DEVICE:
 704         {
 705                 struct ccb_getdev *cgd;
 706                 cam_status status;
 707
 708                 cgd = (struct ccb_getdev *)arg;
 709                 if (cgd == NULL)
 710                         break;
 711
 712                 if (cgd->protocol != PROTO_ATA)
 713                         break;
 714
 715                 /*
 716                  * Allocate a peripheral instance for
 717                  * this device and start the probe
 718                  * process.
 719                  */
 720                 status = cam_periph_alloc(adaregister, adaoninvalidate,
 721                                           adacleanup, adastart,
 722                                           "ada", CAM_PERIPH_BIO,
 723                                           cgd->ccb_h.path, adaasync,
 724                                           AC_FOUND_DEVICE, cgd);
 725
 726                 if (status != CAM_REQ_CMP
 727                  && status != CAM_REQ_INPROG)
 728                         printf("adaasync: Unable to attach to new device "
 729                                 "due to status 0x%x\n", status);
 730                 break;
 731         }
 732         case AC_SENT_BDR:
 733         case AC_BUS_RESET:
 734         {
 735                 struct ccb_getdev cgd;
 736
 737                 softc = (struct ada_softc *)periph->softc;
 738                 cam_periph_async(periph, code, path, arg);
 739                 if (ada_write_cache < 0 && softc->write_cache < 0)
 740                         break;
 741                 if (softc->state != ADA_STATE_NORMAL)
 742                         break;
 743                 xpt_setup_ccb(&cgd.ccb_h, periph->path, CAM_PRIORITY_NORMAL);
 744                 cgd.ccb_h.func_code = XPT_GDEV_TYPE;
 745                 xpt_action((union ccb *)&cgd);
 746                 if ((cgd.ident_data.support.command1 & ATA_SUPPORT_WRITECACHE) == 0)
 747                         break;
 748                 softc->state = ADA_STATE_WCACHE;
 749                 cam_periph_acquire(periph);
 750                 cam_freeze_devq_arg(periph->path,
 751                     RELSIM_RELEASE_RUNLEVEL, CAM_RL_DEV + 1);
 752                 xpt_schedule(periph, CAM_PRIORITY_DEV);
 753         }
 754         default:
 755                 cam_periph_async(periph, code, path, arg);
 756                 break;
 757         }
 758 }
 759
 760 static void
 761 adasysctlinit(void *context, int pending)
 762 {
 763         struct cam_periph *periph;
 764         struct ada_softc *softc;
 765         char tmpstr[80], tmpstr2[80];
 766
 767         periph = (struct cam_periph *)context;
 768
 769         /* periph was held for us when this task was enqueued */
 770         if (periph->flags & CAM_PERIPH_INVALID) {
 771                 cam_periph_release(periph);
 772                 return;
 773         }
 774
 775         softc = (struct ada_softc *)periph->softc;
 776         snprintf(tmpstr, sizeof(tmpstr), "CAM ADA unit %d", periph->unit_number);
 777         snprintf(tmpstr2, sizeof(tmpstr2), "%d", periph->unit_number);
 778
 779         sysctl_ctx_init(&softc->sysctl_ctx);
 780         softc->flags |= ADA_FLAG_SCTX_INIT;
 781         softc->sysctl_tree = SYSCTL_ADD_NODE(&softc->sysctl_ctx,
 782                 SYSCTL_STATIC_CHILDREN(_kern_cam_ada), OID_AUTO, tmpstr2,
 783                 CTLFLAG_RD, 0, tmpstr);
 784         if (softc->sysctl_tree == NULL) {
 785                 printf("adasysctlinit: unable to allocate sysctl tree\n");
 786                 cam_periph_release(periph);
 787                 return;
 788         }
 789
 790         SYSCTL_ADD_INT(&softc->sysctl_ctx, SYSCTL_CHILDREN(softc->sysctl_tree),
 791                 OID_AUTO, "write_cache", CTLFLAG_RW | CTLFLAG_MPSAFE,
 792                 &softc->write_cache, 0, "Enable disk write cache.");
 793 #ifdef ADA_TEST_FAILURE
 794         /*
 795          * Add a 'door bell' sysctl which allows one to set it from userland
 796          * and cause something bad to happen.  For the moment, we only allow
 797          * whacking the next read or write.
 798          */
 799         SYSCTL_ADD_INT(&softc->sysctl_ctx, SYSCTL_CHILDREN(softc->sysctl_tree),
 800                 OID_AUTO, "force_read_error", CTLFLAG_RW | CTLFLAG_MPSAFE,
 801                 &softc->force_read_error, 0,
 802                 "Force a read error for the next N reads.");
 803         SYSCTL_ADD_INT(&softc->sysctl_ctx, SYSCTL_CHILDREN(softc->sysctl_tree),
 804                 OID_AUTO, "force_write_error", CTLFLAG_RW | CTLFLAG_MPSAFE,
 805                 &softc->force_write_error, 0,
 806                 "Force a write error for the next N writes.");
 807         SYSCTL_ADD_INT(&softc->sysctl_ctx, SYSCTL_CHILDREN(softc->sysctl_tree),
 808                 OID_AUTO, "periodic_read_error", CTLFLAG_RW | CTLFLAG_MPSAFE,
 809                 &softc->periodic_read_error, 0,
 810                 "Force a read error every N reads (don't set too low).");
 811 #endif
 812         cam_periph_release(periph);
 813 }
 814
 815 static int
 816 adagetattr(struct bio *bp)
 817 {
 818         int ret = -1;
 819         struct cam_periph *periph;
 820
 821         if (bp->bio_disk == NULL || bp->bio_disk->d_drv1 == NULL)
 822                 return ENXIO;
 823         periph = (struct cam_periph *)bp->bio_disk->d_drv1;
 824         if (periph->path == NULL)
 825                 return ENXIO;
 826
 827         ret = xpt_getattr(bp->bio_data, bp->bio_length, bp->bio_attribute,
 828             periph->path);
 829         if (ret == 0)
 830                 bp->bio_completed = bp->bio_length;
 831         return ret;
 832 }
 833
 834 static cam_status
 835 adaregister(struct cam_periph *periph, void *arg)
 836 {
 837         struct ada_softc *softc;
 838         struct ccb_pathinq cpi;
 839         struct ccb_getdev *cgd;
 840         char   announce_buf[80], buf1[32];
 841         struct disk_params *dp;
 842         caddr_t match;
 843         u_int maxio;
 844         int legacy_id, quirks;
 845
 846         cgd = (struct ccb_getdev *)arg;
 847         if (periph == NULL) {
 848                 printf("adaregister: periph was NULL!!\n");
 849                 return(CAM_REQ_CMP_ERR);
 850         }
 851
 852         if (cgd == NULL) {
 853                 printf("adaregister: no getdev CCB, can't register device\n");
 854                 return(CAM_REQ_CMP_ERR);
 855         }
 856
 857         softc = (struct ada_softc *)malloc(sizeof(*softc), M_DEVBUF,
 858             M_NOWAIT|M_ZERO);
 859
 860         if (softc == NULL) {
 861                 printf("adaregister: Unable to probe new device. "
 862                     "Unable to allocate softc\n");
 863                 return(CAM_REQ_CMP_ERR);
 864         }
 865
 866         bioq_init(&softc->bio_queue);
 867         bioq_init(&softc->trim_queue);
 868
 869         if (cgd->ident_data.capabilities1 & ATA_SUPPORT_DMA &&
 870             (cgd->inq_flags & SID_DMA))
 871                 softc->flags |= ADA_FLAG_CAN_DMA;
 872         if (cgd->ident_data.support.command2 & ATA_SUPPORT_ADDRESS48)
 873                 softc->flags |= ADA_FLAG_CAN_48BIT;
 874         if (cgd->ident_data.support.command2 & ATA_SUPPORT_FLUSHCACHE)
 875                 softc->flags |= ADA_FLAG_CAN_FLUSHCACHE;
 876         if (cgd->ident_data.support.command1 & ATA_SUPPORT_POWERMGT)
 877                 softc->flags |= ADA_FLAG_CAN_POWERMGT;
 878         if (cgd->ident_data.satacapabilities & ATA_SUPPORT_NCQ &&
 879             (cgd->inq_flags & SID_DMA) && (cgd->inq_flags & SID_CmdQue))
 880                 softc->flags |= ADA_FLAG_CAN_NCQ;
 881         if (cgd->ident_data.support_dsm & ATA_SUPPORT_DSM_TRIM) {
 882                 softc->flags |= ADA_FLAG_CAN_TRIM;
 883                 softc->trim_max_ranges = TRIM_MAX_RANGES;
 884                 if (cgd->ident_data.max_dsm_blocks != 0) {
 885                         softc->trim_max_ranges =
 886                             min(cgd->ident_data.max_dsm_blocks * 64,
 887                                 softc->trim_max_ranges);
 888                 }
 889         }
 890         if (cgd->ident_data.support.command2 & ATA_SUPPORT_CFA)
 891                 softc->flags |= ADA_FLAG_CAN_CFA;
 892
 893         periph->softc = softc;
 894
 895         /*
 896          * See if this device has any quirks.
 897          */
 898         match = cam_quirkmatch((caddr_t)&cgd->ident_data,
 899                                (caddr_t)ada_quirk_table,
 900                                sizeof(ada_quirk_table)/sizeof(*ada_quirk_table),
 901                                sizeof(*ada_quirk_table), ata_identify_match);
 902         if (match != NULL)
 903                 softc->quirks = ((struct ada_quirk_entry *)match)->quirks;
 904         else
 905                 softc->quirks = ADA_Q_NONE;
 906
 907         bzero(&cpi, sizeof(cpi));
 908         xpt_setup_ccb(&cpi.ccb_h, periph->path, CAM_PRIORITY_NONE);
 909         cpi.ccb_h.func_code = XPT_PATH_INQ;
 910         xpt_action((union ccb *)&cpi);
 911
 912         TASK_INIT(&softc->sysctl_task, 0, adasysctlinit, periph);
 913
 914         /*
 915          * Register this media as a disk
 916          */
 917         (void)cam_periph_hold(periph, PRIBIO);
 918         mtx_unlock(periph->sim->mtx);
 919         snprintf(announce_buf, sizeof(announce_buf),
 920             "kern.cam.ada.%d.quirks", periph->unit_number);
 921         quirks = softc->quirks;
 922         TUNABLE_INT_FETCH(announce_buf, &quirks);
 923         softc->quirks = quirks;
 924         softc->write_cache = -1;
 925         snprintf(announce_buf, sizeof(announce_buf),
 926             "kern.cam.ada.%d.write_cache", periph->unit_number);
 927         TUNABLE_INT_FETCH(announce_buf, &softc->write_cache);
 928         adagetparams(periph, cgd);
 929         softc->disk = disk_alloc();
 930         softc->disk->d_devstat = devstat_new_entry(periph->periph_name,
 931                           periph->unit_number, softc->params.secsize,
 932                           DEVSTAT_ALL_SUPPORTED,
 933                           DEVSTAT_TYPE_DIRECT |
 934                           XPORT_DEVSTAT_TYPE(cpi.transport),
 935                           DEVSTAT_PRIORITY_DISK);
 936         softc->disk->d_open = adaopen;
 937         softc->disk->d_close = adaclose;
 938         softc->disk->d_strategy = adastrategy;
 939         softc->disk->d_getattr = adagetattr;
 940         softc->disk->d_dump = adadump;
 941         softc->disk->d_name = "ada";
 942         softc->disk->d_drv1 = periph;
 943         maxio = cpi.maxio;              /* Honor max I/O size of SIM */
 944         if (maxio == 0)
 945                 maxio = DFLTPHYS;       /* traditional default */
 946         else if (maxio > MAXPHYS)
 947                 maxio = MAXPHYS;        /* for safety */
 948         if (softc->flags & ADA_FLAG_CAN_48BIT)
 949                 maxio = min(maxio, 65536 * softc->params.secsize);
 950         else                                    /* 28bit ATA command limit */
 951                 maxio = min(maxio, 256 * softc->params.secsize);
 952         softc->disk->d_maxsize = maxio;
 953         softc->disk->d_unit = periph->unit_number;
 954         softc->disk->d_flags = 0;
 955         if (softc->flags & ADA_FLAG_CAN_FLUSHCACHE)
 956                 softc->disk->d_flags |= DISKFLAG_CANFLUSHCACHE;
 957         if ((softc->flags & ADA_FLAG_CAN_TRIM) ||
 958             ((softc->flags & ADA_FLAG_CAN_CFA) &&
 959             !(softc->flags & ADA_FLAG_CAN_48BIT)))
 960                 softc->disk->d_flags |= DISKFLAG_CANDELETE;
 961         strlcpy(softc->disk->d_descr, cgd->ident_data.model,
 962             MIN(sizeof(softc->disk->d_descr), sizeof(cgd->ident_data.model)));
 963         softc->disk->d_hba_vendor = cpi.hba_vendor;
 964         softc->disk->d_hba_device = cpi.hba_device;
 965         softc->disk->d_hba_subvendor = cpi.hba_subvendor;
 966         softc->disk->d_hba_subdevice = cpi.hba_subdevice;
 967
 968         softc->disk->d_sectorsize = softc->params.secsize;
 969         softc->disk->d_mediasize = (off_t)softc->params.sectors *
 970             softc->params.secsize;
 971         if (ata_physical_sector_size(&cgd->ident_data) !=
 972             softc->params.secsize) {
 973                 softc->disk->d_stripesize =
 974                     ata_physical_sector_size(&cgd->ident_data);
 975                 softc->disk->d_stripeoffset = (softc->disk->d_stripesize -
 976                     ata_logical_sector_offset(&cgd->ident_data)) %
 977                     softc->disk->d_stripesize;
 978         } else if (softc->quirks & ADA_Q_4K) {
 979                 softc->disk->d_stripesize = 4096;
 980                 softc->disk->d_stripeoffset = 0;
 981         }
 982         softc->disk->d_fwsectors = softc->params.secs_per_track;
 983         softc->disk->d_fwheads = softc->params.heads;
 984         ata_disk_firmware_geom_adjust(softc->disk);
 985
 986         if (ada_legacy_aliases) {
 987 #ifdef ATA_STATIC_ID
 988                 legacy_id = xpt_path_legacy_ata_id(periph->path);
 989 #else
 990                 legacy_id = softc->disk->d_unit;
 991 #endif
 992                 if (legacy_id >= 0) {
 993                         snprintf(announce_buf, sizeof(announce_buf),
 994                             "kern.devalias.%s%d",
 995                             softc->disk->d_name, softc->disk->d_unit);
 996                         snprintf(buf1, sizeof(buf1),
 997                             "ad%d", legacy_id);
 998                         setenv(announce_buf, buf1);
 999                 }
1000         } else
1001                 legacy_id = -1;
1002         disk_create(softc->disk, DISK_VERSION);
1003         mtx_lock(periph->sim->mtx);
1004         cam_periph_unhold(periph);
1005
1006         dp = &softc->params;
1007         snprintf(announce_buf, sizeof(announce_buf),
1008                 "%juMB (%ju %u byte sectors: %dH %dS/T %dC)",
1009                 (uintmax_t)(((uintmax_t)dp->secsize *
1010                 dp->sectors) / (1024*1024)),
1011                 (uintmax_t)dp->sectors,
1012                 dp->secsize, dp->heads,
1013                 dp->secs_per_track, dp->cylinders);
1014         xpt_announce_periph(periph, announce_buf);
1015         if (legacy_id >= 0)
1016                 printf("%s%d: Previously was known as ad%d\n",
1017                        periph->periph_name, periph->unit_number, legacy_id);
1018
1019         /*
1020          * Create our sysctl variables, now that we know
1021          * we have successfully attached.
1022          */
1023         cam_periph_acquire(periph);
1024         taskqueue_enqueue(taskqueue_thread, &softc->sysctl_task);
1025
1026         /*
1027          * Add async callbacks for bus reset and
1028          * bus device reset calls.  I don't bother
1029          * checking if this fails as, in most cases,
1030          * the system will function just fine without
1031          * them and the only alternative would be to
1032          * not attach the device on failure.
1033          */
1034         xpt_register_async(AC_SENT_BDR | AC_BUS_RESET | AC_LOST_DEVICE,
1035                            adaasync, periph, periph->path);
1036
1037         /*
1038          * Schedule a periodic event to occasionally send an
1039          * ordered tag to a device.
1040          */
1041         callout_init_mtx(&softc->sendordered_c, periph->sim->mtx, 0);
1042         callout_reset(&softc->sendordered_c,
1043             (ADA_DEFAULT_TIMEOUT * hz) / ADA_ORDEREDTAG_INTERVAL,
1044             adasendorderedtag, softc);
1045
1046         if ((ada_write_cache >= 0 || softc->write_cache >= 0) &&
1047             cgd->ident_data.support.command1 & ATA_SUPPORT_WRITECACHE) {
1048                 softc->state = ADA_STATE_WCACHE;
1049                 cam_periph_acquire(periph);
1050                 cam_freeze_devq_arg(periph->path,
1051                     RELSIM_RELEASE_RUNLEVEL, CAM_RL_DEV + 1);
1052                 xpt_schedule(periph, CAM_PRIORITY_DEV);
1053         } else
1054                 softc->state = ADA_STATE_NORMAL;
1055
1056         return(CAM_REQ_CMP);
1057 }
1058
1059 static void
1060 adastart(struct cam_periph *periph, union ccb *start_ccb)
1061 {
1062         struct ada_softc *softc = (struct ada_softc *)periph->softc;
1063         struct ccb_ataio *ataio = &start_ccb->ataio;
1064
1065         switch (softc->state) {
1066         case ADA_STATE_NORMAL:
1067         {
1068                 struct bio *bp;
1069                 u_int8_t tag_code;
1070
1071                 /* Execute immediate CCB if waiting. */
1072                 if (periph->immediate_priority <= periph->pinfo.priority) {
1073                         CAM_DEBUG_PRINT(CAM_DEBUG_SUBTRACE,
1074                                         ("queuing for immediate ccb\n"));
1075                         start_ccb->ccb_h.ccb_state = ADA_CCB_WAITING;
1076                         SLIST_INSERT_HEAD(&periph->ccb_list, &start_ccb->ccb_h,
1077                                           periph_links.sle);
1078                         periph->immediate_priority = CAM_PRIORITY_NONE;
1079                         wakeup(&periph->ccb_list);
1080                         /* Have more work to do, so ensure we stay scheduled */
1081                         adaschedule(periph);
1082                         break;
1083                 }
1084                 /* Run TRIM if not running yet. */
1085                 if (!softc->trim_running &&
1086                     (bp = bioq_first(&softc->trim_queue)) != 0) {
1087                         struct trim_request *req = &softc->trim_req;
1088                         struct bio *bp1;
1089                         uint64_t lastlba = (uint64_t)-1;
1090                         int bps = 0, c, lastcount = 0, off, ranges = 0;
1091
1092                         softc->trim_running = 1;
1093                         bzero(req, sizeof(*req));
1094                         bp1 = bp;
1095                         do {
1096                                 uint64_t lba = bp1->bio_pblkno;
1097                                 int count = bp1->bio_bcount /
1098                                     softc->params.secsize;
1099
1100                                 bioq_remove(&softc->trim_queue, bp1);
1101
1102                                 /* Try to extend the previous range. */
1103                                 if (lba == lastlba) {
1104                                         c = min(count, 0xffff - lastcount);
1105                                         lastcount += c;
1106                                         off = (ranges - 1) * 8;
1107                                         req->data[off + 6] = lastcount & 0xff;
1108                                         req->data[off + 7] =
1109                                             (lastcount >> 8) & 0xff;
1110                                         count -= c;
1111                                         lba += c;
1112                                 }
1113
1114                                 while (count > 0) {
1115                                         c = min(count, 0xffff);
1116                                         off = ranges * 8;
1117                                         req->data[off + 0] = lba & 0xff;
1118                                         req->data[off + 1] = (lba >> 8) & 0xff;
1119                                         req->data[off + 2] = (lba >> 16) & 0xff;
1120                                         req->data[off + 3] = (lba >> 24) & 0xff;
1121                                         req->data[off + 4] = (lba >> 32) & 0xff;
1122                                         req->data[off + 5] = (lba >> 40) & 0xff;
1123                                         req->data[off + 6] = c & 0xff;
1124                                         req->data[off + 7] = (c >> 8) & 0xff;
1125                                         lba += c;
1126                                         count -= c;
1127                                         lastcount = c;
1128                                         ranges++;
1129                                 }
1130                                 lastlba = lba;
1131                                 req->bps[bps++] = bp1;
1132                                 bp1 = bioq_first(&softc->trim_queue);
1133                                 if (bps >= TRIM_MAX_BIOS ||
1134                                     bp1 == NULL ||
1135                                     bp1->bio_bcount / softc->params.secsize >
1136                                     (softc->trim_max_ranges - ranges) * 0xffff)
1137                                         break;
1138                         } while (1);
1139                         cam_fill_ataio(ataio,
1140                             ada_retry_count,
1141                             adadone,
1142                             CAM_DIR_OUT,
1143                             0,
1144                             req->data,
1145                             ((ranges + 63) / 64) * 512,
1146                             ada_default_timeout * 1000);
1147                         ata_48bit_cmd(ataio, ATA_DATA_SET_MANAGEMENT,
1148                             ATA_DSM_TRIM, 0, (ranges + 63) / 64);
1149                         start_ccb->ccb_h.ccb_state = ADA_CCB_TRIM;
1150                         goto out;
1151                 }
1152                 /* Run regular command. */
1153                 bp = bioq_first(&softc->bio_queue);
1154                 if (bp == NULL) {
1155                         xpt_release_ccb(start_ccb);
1156                         break;
1157                 }
1158                 bioq_remove(&softc->bio_queue, bp);
1159
1160                 if ((bp->bio_flags & BIO_ORDERED) != 0
1161                  || (softc->flags & ADA_FLAG_NEED_OTAG) != 0) {
1162                         softc->flags &= ~ADA_FLAG_NEED_OTAG;
1163                         softc->ordered_tag_count++;
1164                         tag_code = 0;
1165                 } else {
1166                         tag_code = 1;
1167                 }
1168                 switch (bp->bio_cmd) {
1169                 case BIO_READ:
1170                 case BIO_WRITE:
1171                 {
1172                         uint64_t lba = bp->bio_pblkno;
1173                         uint16_t count = bp->bio_bcount / softc->params.secsize;
1174 #ifdef ADA_TEST_FAILURE
1175                         int fail = 0;
1176
1177                         /*
1178                          * Support the failure ioctls.  If the command is a
1179                          * read, and there are pending forced read errors, or
1180                          * if a write and pending write errors, then fail this
1181                          * operation with EIO.  This is useful for testing
1182                          * purposes.  Also, support having every Nth read fail.
1183                          *
1184                          * This is a rather blunt tool.
1185                          */
1186                         if (bp->bio_cmd == BIO_READ) {
1187                                 if (softc->force_read_error) {
1188                                         softc->force_read_error--;
1189                                         fail = 1;
1190                                 }
1191                                 if (softc->periodic_read_error > 0) {
1192                                         if (++softc->periodic_read_count >=
1193                                             softc->periodic_read_error) {
1194                                                 softc->periodic_read_count = 0;
1195                                                 fail = 1;
1196                                         }
1197                                 }
1198                         } else {
1199                                 if (softc->force_write_error) {
1200                                         softc->force_write_error--;
1201                                         fail = 1;
1202                                 }
1203                         }
1204                         if (fail) {
1205                                 bp->bio_error = EIO;
1206                                 bp->bio_flags |= BIO_ERROR;
1207                                 biodone(bp);
1208                                 xpt_release_ccb(start_ccb);
1209                                 adaschedule(periph);
1210                                 return;
1211                         }
1212 #endif
1213                         cam_fill_ataio(ataio,
1214                             ada_retry_count,
1215                             adadone,
1216                             bp->bio_cmd == BIO_READ ?
1217                                 CAM_DIR_IN : CAM_DIR_OUT,
1218                             tag_code,
1219                             bp->bio_data,
1220                             bp->bio_bcount,
1221                             ada_default_timeout*1000);
1222
1223                         if ((softc->flags & ADA_FLAG_CAN_NCQ) && tag_code) {
1224                                 if (bp->bio_cmd == BIO_READ) {
1225                                         ata_ncq_cmd(ataio, ATA_READ_FPDMA_QUEUED,
1226                                             lba, count);
1227                                 } else {
1228                                         ata_ncq_cmd(ataio, ATA_WRITE_FPDMA_QUEUED,
1229                                             lba, count);
1230                                 }
1231                         } else if ((softc->flags & ADA_FLAG_CAN_48BIT) &&
1232                             (lba + count >= ATA_MAX_28BIT_LBA ||
1233                             count > 256)) {
1234                                 if (softc->flags & ADA_FLAG_CAN_DMA) {
1235                                         if (bp->bio_cmd == BIO_READ) {
1236                                                 ata_48bit_cmd(ataio, ATA_READ_DMA48,
1237                                                     0, lba, count);
1238                                         } else {
1239                                                 ata_48bit_cmd(ataio, ATA_WRITE_DMA48,
1240                                                     0, lba, count);
1241                                         }
1242                                 } else {
1243                                         if (bp->bio_cmd == BIO_READ) {
1244                                                 ata_48bit_cmd(ataio, ATA_READ_MUL48,
1245                                                     0, lba, count);
1246                                         } else {
1247                                                 ata_48bit_cmd(ataio, ATA_WRITE_MUL48,
1248                                                     0, lba, count);
1249                                         }
1250                                 }
1251                         } else {
1252                                 if (count == 256)
1253                                         count = 0;
1254                                 if (softc->flags & ADA_FLAG_CAN_DMA) {
1255                                         if (bp->bio_cmd == BIO_READ) {
1256                                                 ata_28bit_cmd(ataio, ATA_READ_DMA,
1257                                                     0, lba, count);
1258                                         } else {
1259                                                 ata_28bit_cmd(ataio, ATA_WRITE_DMA,
1260                                                     0, lba, count);
1261                                         }
1262                                 } else {
1263                                         if (bp->bio_cmd == BIO_READ) {
1264                                                 ata_28bit_cmd(ataio, ATA_READ_MUL,
1265                                                     0, lba, count);
1266                                         } else {
1267                                                 ata_28bit_cmd(ataio, ATA_WRITE_MUL,
1268                                                     0, lba, count);
1269                                         }
1270                                 }
1271                         }
1272                         break;
1273                 }
1274                 case BIO_DELETE:
1275                 {
1276                         uint64_t lba = bp->bio_pblkno;
1277                         uint16_t count = bp->bio_bcount / softc->params.secsize;
1278
1279                         cam_fill_ataio(ataio,
1280                             ada_retry_count,
1281                             adadone,
1282                             CAM_DIR_NONE,
1283                             0,
1284                             NULL,
1285                             0,
1286                             ada_default_timeout*1000);
1287
1288                         if (count >= 256)
1289                                 count = 0;
1290                         ata_28bit_cmd(ataio, ATA_CFA_ERASE, 0, lba, count);
1291                         break;
1292                 }
1293                 case BIO_FLUSH:
1294                         cam_fill_ataio(ataio,
1295                             1,
1296                             adadone,
1297                             CAM_DIR_NONE,
1298                             0,
1299                             NULL,
1300                             0,
1301                             ada_default_timeout*1000);
1302
1303                         if (softc->flags & ADA_FLAG_CAN_48BIT)
1304                                 ata_48bit_cmd(ataio, ATA_FLUSHCACHE48, 0, 0, 0);
1305                         else
1306                                 ata_28bit_cmd(ataio, ATA_FLUSHCACHE, 0, 0, 0);
1307                         break;
1308                 }
1309                 start_ccb->ccb_h.ccb_state = ADA_CCB_BUFFER_IO;
1310 out:
1311                 start_ccb->ccb_h.ccb_bp = bp;
1312                 softc->outstanding_cmds++;
1313                 xpt_action(start_ccb);
1314
1315                 /* May have more work to do, so ensure we stay scheduled */
1316                 adaschedule(periph);
1317                 break;
1318         }
1319         case ADA_STATE_WCACHE:
1320         {
1321                 cam_fill_ataio(ataio,
1322                     1,
1323                     adadone,
1324                     CAM_DIR_NONE,
1325                     0,
1326                     NULL,
1327                     0,
1328                     ada_default_timeout*1000);
1329
1330                 ata_28bit_cmd(ataio, ATA_SETFEATURES, (softc->write_cache > 0 ||
1331                      (softc->write_cache < 0 && ada_write_cache)) ?
1332                     ATA_SF_ENAB_WCACHE : ATA_SF_DIS_WCACHE, 0, 0);
1333                 start_ccb->ccb_h.ccb_state = ADA_CCB_WCACHE;
1334                 xpt_action(start_ccb);
1335                 break;
1336         }
1337         }
1338 }
1339
1340 static void
1341 adadone(struct cam_periph *periph, union ccb *done_ccb)
1342 {
1343         struct ada_softc *softc;
1344         struct ccb_ataio *ataio;
1345
1346         softc = (struct ada_softc *)periph->softc;
1347         ataio = &done_ccb->ataio;
1348         switch (ataio->ccb_h.ccb_state & ADA_CCB_TYPE_MASK) {
1349         case ADA_CCB_BUFFER_IO:
1350         case ADA_CCB_TRIM:
1351         {
1352                 struct bio *bp;
1353
1354                 bp = (struct bio *)done_ccb->ccb_h.ccb_bp;
1355                 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1356                         int error;
1357
1358                         error = adaerror(done_ccb, 0, 0);
1359                         if (error == ERESTART) {
1360                                 /* A retry was scheduled, so just return. */
1361                                 return;
1362                         }
1363                         if (error != 0) {
1364                                 if (error == ENXIO) {
1365                                         /*
1366                                          * Catastrophic error.  Mark our pack as
1367                                          * invalid.
1368                                          */
1369                                         /*
1370                                          * XXX See if this is really a media
1371                                          * XXX change first?
1372                                          */
1373                                         xpt_print(periph->path,
1374                                             "Invalidating pack\n");
1375                                         softc->flags |= ADA_FLAG_PACK_INVALID;
1376                                 }
1377                                 bp->bio_error = error;
1378                                 bp->bio_resid = bp->bio_bcount;
1379                                 bp->bio_flags |= BIO_ERROR;
1380                         } else {
1381                                 bp->bio_resid = ataio->resid;
1382                                 bp->bio_error = 0;
1383                                 if (bp->bio_resid != 0)
1384                                         bp->bio_flags |= BIO_ERROR;
1385                         }
1386                         if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
1387                                 cam_release_devq(done_ccb->ccb_h.path,
1388                                                  /*relsim_flags*/0,
1389                                                  /*reduction*/0,
1390                                                  /*timeout*/0,
1391                                                  /*getcount_only*/0);
1392                 } else {
1393                         if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
1394                                 panic("REQ_CMP with QFRZN");
1395                         bp->bio_resid = ataio->resid;
1396                         if (ataio->resid > 0)
1397                                 bp->bio_flags |= BIO_ERROR;
1398                 }
1399                 softc->outstanding_cmds--;
1400                 if (softc->outstanding_cmds == 0)
1401                         softc->flags |= ADA_FLAG_WENT_IDLE;
1402                 if ((ataio->ccb_h.ccb_state & ADA_CCB_TYPE_MASK) ==
1403                     ADA_CCB_TRIM) {
1404                         struct trim_request *req =
1405                             (struct trim_request *)ataio->data_ptr;
1406                         int i;
1407
1408                         for (i = 1; i < TRIM_MAX_BIOS && req->bps[i]; i++) {
1409                                 struct bio *bp1 = req->bps[i];
1410
1411                                 bp1->bio_resid = bp->bio_resid;
1412                                 bp1->bio_error = bp->bio_error;
1413                                 if (bp->bio_flags & BIO_ERROR)
1414                                         bp1->bio_flags |= BIO_ERROR;
1415                                 biodone(bp1);
1416                         }
1417                         softc->trim_running = 0;
1418                         biodone(bp);
1419                         adaschedule(periph);
1420                 } else
1421                         biodone(bp);
1422                 break;
1423         }
1424         case ADA_CCB_WCACHE:
1425         {
1426                 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1427                         if (adaerror(done_ccb, 0, 0) == ERESTART) {
1428                                 return;
1429                         } else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
1430                                 cam_release_devq(done_ccb->ccb_h.path,
1431                                     /*relsim_flags*/0,
1432                                     /*reduction*/0,
1433                                     /*timeout*/0,
1434                                     /*getcount_only*/0);
1435                         }
1436                 }
1437
1438                 softc->state = ADA_STATE_NORMAL;
1439                 /*
1440                  * Since our peripheral may be invalidated by an error
1441                  * above or an external event, we must release our CCB
1442                  * before releasing the reference on the peripheral.
1443                  * The peripheral will only go away once the last reference
1444                  * is removed, and we need it around for the CCB release
1445                  * operation.
1446                  */
1447                 xpt_release_ccb(done_ccb);
1448                 cam_release_devq(periph->path,
1449                     RELSIM_RELEASE_RUNLEVEL, 0, CAM_RL_DEV + 1, FALSE);
1450                 adaschedule(periph);
1451                 cam_periph_release_locked(periph);
1452                 return;
1453         }
1454         case ADA_CCB_WAITING:
1455         {
1456                 /* Caller will release the CCB */
1457                 wakeup(&done_ccb->ccb_h.cbfcnp);
1458                 return;
1459         }
1460         case ADA_CCB_DUMP:
1461                 /* No-op.  We're polling */
1462                 return;
1463         default:
1464                 break;
1465         }
1466         xpt_release_ccb(done_ccb);
1467 }
1468
1469 static int
1470 adaerror(union ccb *ccb, u_int32_t cam_flags, u_int32_t sense_flags)
1471 {
1472
1473         return(cam_periph_error(ccb, cam_flags, sense_flags, NULL));
1474 }
1475
1476 static void
1477 adagetparams(struct cam_periph *periph, struct ccb_getdev *cgd)
1478 {
1479         struct ada_softc *softc = (struct ada_softc *)periph->softc;
1480         struct disk_params *dp = &softc->params;
1481         u_int64_t lbasize48;
1482         u_int32_t lbasize;
1483
1484         dp->secsize = ata_logical_sector_size(&cgd->ident_data);
1485         if ((cgd->ident_data.atavalid & ATA_FLAG_54_58) &&
1486                 cgd->ident_data.current_heads && cgd->ident_data.current_sectors) {
1487                 dp->heads = cgd->ident_data.current_heads;
1488                 dp->secs_per_track = cgd->ident_data.current_sectors;
1489                 dp->cylinders = cgd->ident_data.cylinders;
1490                 dp->sectors = (u_int32_t)cgd->ident_data.current_size_1 |
1491                           ((u_int32_t)cgd->ident_data.current_size_2 << 16);
1492         } else {
1493                 dp->heads = cgd->ident_data.heads;
1494                 dp->secs_per_track = cgd->ident_data.sectors;
1495                 dp->cylinders = cgd->ident_data.cylinders;
1496                 dp->sectors = cgd->ident_data.cylinders * dp->heads * dp->secs_per_track;
1497         }
1498         lbasize = (u_int32_t)cgd->ident_data.lba_size_1 |
1499                   ((u_int32_t)cgd->ident_data.lba_size_2 << 16);
1500
1501         /* use the 28bit LBA size if valid or bigger than the CHS mapping */
1502         if (cgd->ident_data.cylinders == 16383 || dp->sectors < lbasize)
1503                 dp->sectors = lbasize;
1504
1505         /* use the 48bit LBA size if valid */
1506         lbasize48 = ((u_int64_t)cgd->ident_data.lba_size48_1) |
1507                     ((u_int64_t)cgd->ident_data.lba_size48_2 << 16) |
1508                     ((u_int64_t)cgd->ident_data.lba_size48_3 << 32) |
1509                     ((u_int64_t)cgd->ident_data.lba_size48_4 << 48);
1510         if ((cgd->ident_data.support.command2 & ATA_SUPPORT_ADDRESS48) &&
1511             lbasize48 > ATA_MAX_28BIT_LBA)
1512                 dp->sectors = lbasize48;
1513 }
1514
1515 static void
1516 adasendorderedtag(void *arg)
1517 {
1518         struct ada_softc *softc = arg;
1519
1520         if (ada_send_ordered) {
1521                 if ((softc->ordered_tag_count == 0)
1522                  && ((softc->flags & ADA_FLAG_WENT_IDLE) == 0)) {
1523                         softc->flags |= ADA_FLAG_NEED_OTAG;
1524                 }
1525                 if (softc->outstanding_cmds > 0)
1526                         softc->flags &= ~ADA_FLAG_WENT_IDLE;
1527
1528                 softc->ordered_tag_count = 0;
1529         }
1530         /* Queue us up again */
1531         callout_reset(&softc->sendordered_c,
1532             (ADA_DEFAULT_TIMEOUT * hz) / ADA_ORDEREDTAG_INTERVAL,
1533             adasendorderedtag, softc);
1534 }
1535
1536 /*
1537  * Step through all ADA peripheral drivers, and if the device is still open,
1538  * sync the disk cache to physical media.
1539  */
1540 static void
1541 adaflush(void)
1542 {
1543         struct cam_periph *periph;
1544         struct ada_softc *softc;
1545
1546         TAILQ_FOREACH(periph, &adadriver.units, unit_links) {
1547                 union ccb ccb;
1548
1549                 /* If we paniced with lock held - not recurse here. */
1550                 if (cam_periph_owned(periph))
1551                         continue;
1552                 cam_periph_lock(periph);
1553                 softc = (struct ada_softc *)periph->softc;
1554                 /*
1555                  * We only sync the cache if the drive is still open, and
1556                  * if the drive is capable of it..
1557                  */
1558                 if (((softc->flags & ADA_FLAG_OPEN) == 0) ||
1559                     (softc->flags & ADA_FLAG_CAN_FLUSHCACHE) == 0) {
1560                         cam_periph_unlock(periph);
1561                         continue;
1562                 }
1563
1564                 xpt_setup_ccb(&ccb.ccb_h, periph->path, CAM_PRIORITY_NORMAL);
1565
1566                 ccb.ccb_h.ccb_state = ADA_CCB_DUMP;
1567                 cam_fill_ataio(&ccb.ataio,
1568                                     1,
1569                                     adadone,
1570                                     CAM_DIR_NONE,
1571                                     0,
1572                                     NULL,
1573                                     0,
1574                                     ada_default_timeout*1000);
1575
1576                 if (softc->flags & ADA_FLAG_CAN_48BIT)
1577                         ata_48bit_cmd(&ccb.ataio, ATA_FLUSHCACHE48, 0, 0, 0);
1578                 else
1579                         ata_28bit_cmd(&ccb.ataio, ATA_FLUSHCACHE, 0, 0, 0);
1580                 xpt_polled_action(&ccb);
1581
1582                 if ((ccb.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP)
1583                         xpt_print(periph->path, "Synchronize cache failed\n");
1584
1585                 if ((ccb.ccb_h.status & CAM_DEV_QFRZN) != 0)
1586                         cam_release_devq(ccb.ccb_h.path,
1587                                          /*relsim_flags*/0,
1588                                          /*reduction*/0,
1589                                          /*timeout*/0,
1590                                          /*getcount_only*/0);
1591                 cam_periph_unlock(periph);
1592         }
1593 }
1594
1595 static void
1596 adaspindown(uint8_t cmd, int flags)
1597 {
1598         struct cam_periph *periph;
1599         struct ada_softc *softc;
1600
1601         TAILQ_FOREACH(periph, &adadriver.units, unit_links) {
1602                 union ccb ccb;
1603
1604                 /* If we paniced with lock held - not recurse here. */
1605                 if (cam_periph_owned(periph))
1606                         continue;
1607                 cam_periph_lock(periph);
1608                 softc = (struct ada_softc *)periph->softc;
1609                 /*
1610                  * We only spin-down the drive if it is capable of it..
1611                  */
1612                 if ((softc->flags & ADA_FLAG_CAN_POWERMGT) == 0) {
1613                         cam_periph_unlock(periph);
1614                         continue;
1615                 }
1616
1617                 if (bootverbose)
1618                         xpt_print(periph->path, "spin-down\n");
1619
1620                 xpt_setup_ccb(&ccb.ccb_h, periph->path, CAM_PRIORITY_NORMAL);
1621
1622                 ccb.ccb_h.ccb_state = ADA_CCB_DUMP;
1623                 cam_fill_ataio(&ccb.ataio,
1624                                     1,
1625                                     adadone,
1626                                     CAM_DIR_NONE | flags,
1627                                     0,
1628                                     NULL,
1629                                     0,
1630                                     ada_default_timeout*1000);
1631
1632                 ata_28bit_cmd(&ccb.ataio, cmd, 0, 0, 0);
1633                 xpt_polled_action(&ccb);
1634
1635                 if ((ccb.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP)
1636                         xpt_print(periph->path, "Spin-down disk failed\n");
1637
1638                 if ((ccb.ccb_h.status & CAM_DEV_QFRZN) != 0)
1639                         cam_release_devq(ccb.ccb_h.path,
1640                                          /*relsim_flags*/0,
1641                                          /*reduction*/0,
1642                                          /*timeout*/0,
1643                                          /*getcount_only*/0);
1644                 cam_periph_unlock(periph);
1645         }
1646 }
1647
1648 static void
1649 adashutdown(void *arg, int howto)
1650 {
1651
1652         adaflush();
1653         if (ada_spindown_shutdown != 0 &&
1654             (howto & (RB_HALT | RB_POWEROFF)) != 0)
1655                 adaspindown(ATA_STANDBY_IMMEDIATE, 0);
1656 }
1657
1658 static void
1659 adasuspend(void *arg)
1660 {
1661
1662         adaflush();
1663         if (ada_spindown_suspend != 0)
1664                 adaspindown(ATA_SLEEP, CAM_DEV_QFREEZE);
1665 }
1666
1667 static void
1668 adaresume(void *arg)
1669 {
1670         struct cam_periph *periph;
1671         struct ada_softc *softc;
1672
1673         if (ada_spindown_suspend == 0)
1674                 return;
1675
1676         TAILQ_FOREACH(periph, &adadriver.units, unit_links) {
1677                 cam_periph_lock(periph);
1678                 softc = (struct ada_softc *)periph->softc;
1679                 /*
1680                  * We only spin-down the drive if it is capable of it..
1681                  */
1682                 if ((softc->flags & ADA_FLAG_CAN_POWERMGT) == 0) {
1683                         cam_periph_unlock(periph);
1684                         continue;
1685                 }
1686
1687                 if (bootverbose)
1688                         xpt_print(periph->path, "resume\n");
1689
1690                 /*
1691                  * Drop freeze taken due to CAM_DEV_QFREEZE flag set on
1692                  * sleep request.
1693                  */
1694                 cam_release_devq(periph->path,
1695                          /*relsim_flags*/0,
1696                          /*openings*/0,
1697                          /*timeout*/0,
1698                          /*getcount_only*/0);
1699
1700                 cam_periph_unlock(periph);
1701         }
1702 }
1703
1704 #endif /* _KERNEL */