sys/cam/ata/ata_da.c

   1 /*-
   2  * Copyright (c) 2009 Alexander Motin <mav@FreeBSD.org>
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer,
  10  *    without modification, immediately at the beginning of the file.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  *
  15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  16  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  17  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  18  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  19  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  20  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  21  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  22  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  23  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  24  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  25  */
  26
  27 #include <sys/cdefs.h>
  28 __FBSDID("$FreeBSD$");
  29
  30 #include "opt_ada.h"
  31
  32 #include <sys/param.h>
  33
  34 #ifdef _KERNEL
  35 #include <sys/systm.h>
  36 #include <sys/kernel.h>
  37 #include <sys/bio.h>
  38 #include <sys/sysctl.h>
  39 #include <sys/taskqueue.h>
  40 #include <sys/lock.h>
  41 #include <sys/mutex.h>
  42 #include <sys/conf.h>
  43 #include <sys/devicestat.h>
  44 #include <sys/eventhandler.h>
  45 #include <sys/malloc.h>
  46 #include <sys/cons.h>
  47 #include <sys/proc.h>
  48 #include <sys/reboot.h>
  49 #include <geom/geom_disk.h>
  50 #endif /* _KERNEL */
  51
  52 #ifndef _KERNEL
  53 #include <stdio.h>
  54 #include <string.h>
  55 #endif /* _KERNEL */
  56
  57 #include <cam/cam.h>
  58 #include <cam/cam_ccb.h>
  59 #include <cam/cam_periph.h>
  60 #include <cam/cam_xpt_periph.h>
  61 #include <cam/cam_sim.h>
  62
  63 #include <cam/ata/ata_all.h>
  64
  65 #include <machine/md_var.h>     /* geometry translation */
  66
  67 #ifdef _KERNEL
  68
  69 #define ATA_MAX_28BIT_LBA               268435455UL
  70
  71 typedef enum {
  72         ADA_STATE_RAHEAD,
  73         ADA_STATE_WCACHE,
  74         ADA_STATE_NORMAL
  75 } ada_state;
  76
  77 typedef enum {
  78         ADA_FLAG_CAN_48BIT      = 0x0002,
  79         ADA_FLAG_CAN_FLUSHCACHE = 0x0004,
  80         ADA_FLAG_CAN_NCQ        = 0x0008,
  81         ADA_FLAG_CAN_DMA        = 0x0010,
  82         ADA_FLAG_NEED_OTAG      = 0x0020,
  83         ADA_FLAG_WAS_OTAG       = 0x0040,
  84         ADA_FLAG_CAN_TRIM       = 0x0080,
  85         ADA_FLAG_OPEN           = 0x0100,
  86         ADA_FLAG_SCTX_INIT      = 0x0200,
  87         ADA_FLAG_CAN_CFA        = 0x0400,
  88         ADA_FLAG_CAN_POWERMGT   = 0x0800,
  89         ADA_FLAG_CAN_DMA48      = 0x1000,
  90         ADA_FLAG_DIRTY          = 0x2000
  91 } ada_flags;
  92
  93 typedef enum {
  94         ADA_Q_NONE              = 0x00,
  95         ADA_Q_4K                = 0x01,
  96 } ada_quirks;
  97
  98 #define ADA_Q_BIT_STRING        \
  99         "\020"                  \
 100         "\0014K"
 101
 102 typedef enum {
 103         ADA_CCB_RAHEAD          = 0x01,
 104         ADA_CCB_WCACHE          = 0x02,
 105         ADA_CCB_BUFFER_IO       = 0x03,
 106         ADA_CCB_DUMP            = 0x05,
 107         ADA_CCB_TRIM            = 0x06,
 108         ADA_CCB_TYPE_MASK       = 0x0F,
 109 } ada_ccb_state;
 110
 111 /* Offsets into our private area for storing information */
 112 #define ccb_state       ppriv_field0
 113 #define ccb_bp          ppriv_ptr1
 114
 115 struct disk_params {
 116         u_int8_t  heads;
 117         u_int8_t  secs_per_track;
 118         u_int32_t cylinders;
 119         u_int32_t secsize;      /* Number of bytes/logical sector */
 120         u_int64_t sectors;      /* Total number sectors */
 121 };
 122
 123 #define TRIM_MAX_BLOCKS 8
 124 #define TRIM_MAX_RANGES (TRIM_MAX_BLOCKS * ATA_DSM_BLK_RANGES)
 125 struct trim_request {
 126         uint8_t         data[TRIM_MAX_RANGES * ATA_DSM_RANGE_SIZE];
 127         TAILQ_HEAD(, bio) bps;
 128 };
 129
 130 struct ada_softc {
 131         struct   bio_queue_head bio_queue;
 132         struct   bio_queue_head trim_queue;
 133         int      outstanding_cmds;      /* Number of active commands */
 134         int      refcount;              /* Active xpt_action() calls */
 135         ada_state state;
 136         ada_flags flags;
 137         ada_quirks quirks;
 138         int      sort_io_queue;
 139         int      trim_max_ranges;
 140         int      trim_running;
 141         int      read_ahead;
 142         int      write_cache;
 143 #ifdef ADA_TEST_FAILURE
 144         int      force_read_error;
 145         int      force_write_error;
 146         int      periodic_read_error;
 147         int      periodic_read_count;
 148 #endif
 149         struct   disk_params params;
 150         struct   disk *disk;
 151         struct task             sysctl_task;
 152         struct sysctl_ctx_list  sysctl_ctx;
 153         struct sysctl_oid       *sysctl_tree;
 154         struct callout          sendordered_c;
 155         struct trim_request     trim_req;
 156 };
 157
 158 struct ada_quirk_entry {
 159         struct scsi_inquiry_pattern inq_pat;
 160         ada_quirks quirks;
 161 };
 162
 163 static struct ada_quirk_entry ada_quirk_table[] =
 164 {
 165         {
 166                 /* Hitachi Advanced Format (4k) drives */
 167                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "Hitachi H??????????E3*", "*" },
 168                 /*quirks*/ADA_Q_4K
 169         },
 170         {
 171                 /* Samsung Advanced Format (4k) drives */
 172                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "SAMSUNG HD155UI*", "*" },
 173                 /*quirks*/ADA_Q_4K
 174         },
 175         {
 176                 /* Samsung Advanced Format (4k) drives */
 177                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "SAMSUNG HD204UI*", "*" },
 178                 /*quirks*/ADA_Q_4K
 179         },
 180         {
 181                 /* Seagate Barracuda Green Advanced Format (4k) drives */
 182                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "ST????DL*", "*" },
 183                 /*quirks*/ADA_Q_4K
 184         },
 185         {
 186                 /* Seagate Barracuda Advanced Format (4k) drives */
 187                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "ST???DM*", "*" },
 188                 /*quirks*/ADA_Q_4K
 189         },
 190         {
 191                 /* Seagate Barracuda Advanced Format (4k) drives */
 192                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "ST????DM*", "*" },
 193                 /*quirks*/ADA_Q_4K
 194         },
 195         {
 196                 /* Seagate Momentus Advanced Format (4k) drives */
 197                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "ST9500423AS*", "*" },
 198                 /*quirks*/ADA_Q_4K
 199         },
 200         {
 201                 /* Seagate Momentus Advanced Format (4k) drives */
 202                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "ST9500424AS*", "*" },
 203                 /*quirks*/ADA_Q_4K
 204         },
 205         {
 206                 /* Seagate Momentus Advanced Format (4k) drives */
 207                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "ST9640423AS*", "*" },
 208                 /*quirks*/ADA_Q_4K
 209         },
 210         {
 211                 /* Seagate Momentus Advanced Format (4k) drives */
 212                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "ST9640424AS*", "*" },
 213                 /*quirks*/ADA_Q_4K
 214         },
 215         {
 216                 /* Seagate Momentus Advanced Format (4k) drives */
 217                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "ST9750420AS*", "*" },
 218                 /*quirks*/ADA_Q_4K
 219         },
 220         {
 221                 /* Seagate Momentus Advanced Format (4k) drives */
 222                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "ST9750422AS*", "*" },
 223                 /*quirks*/ADA_Q_4K
 224         },
 225         {
 226                 /* Seagate Momentus Advanced Format (4k) drives */
 227                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "ST9750423AS*", "*" },
 228                 /*quirks*/ADA_Q_4K
 229         },
 230         {
 231                 /* Seagate Momentus Thin Advanced Format (4k) drives */
 232                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "ST???LT*", "*" },
 233                 /*quirks*/ADA_Q_4K
 234         },
 235         {
 236                 /* WDC Caviar Red Advanced Format (4k) drives */
 237                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "WDC WD????CX*", "*" },
 238                 /*quirks*/ADA_Q_4K
 239         },
 240         {
 241                 /* WDC Caviar Green Advanced Format (4k) drives */
 242                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "WDC WD????RS*", "*" },
 243                 /*quirks*/ADA_Q_4K
 244         },
 245         {
 246                 /* WDC Caviar Green/Red Advanced Format (4k) drives */
 247                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "WDC WD????RX*", "*" },
 248                 /*quirks*/ADA_Q_4K
 249         },
 250         {
 251                 /* WDC Caviar Red Advanced Format (4k) drives */
 252                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "WDC WD??????CX*", "*" },
 253                 /*quirks*/ADA_Q_4K
 254         },
 255         {
 256                 /* WDC Caviar Black Advanced Format (4k) drives */
 257                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "WDC WD??????EX*", "*" },
 258                 /*quirks*/ADA_Q_4K
 259         },
 260         {
 261                 /* WDC Caviar Green Advanced Format (4k) drives */
 262                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "WDC WD??????RS*", "*" },
 263                 /*quirks*/ADA_Q_4K
 264         },
 265         {
 266                 /* WDC Caviar Green Advanced Format (4k) drives */
 267                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "WDC WD??????RX*", "*" },
 268                 /*quirks*/ADA_Q_4K
 269         },
 270         {
 271                 /* WDC Scorpio Black Advanced Format (4k) drives */
 272                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "WDC WD???PKT*", "*" },
 273                 /*quirks*/ADA_Q_4K
 274         },
 275         {
 276                 /* WDC Scorpio Black Advanced Format (4k) drives */
 277                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "WDC WD?????PKT*", "*" },
 278                 /*quirks*/ADA_Q_4K
 279         },
 280         {
 281                 /* WDC Scorpio Blue Advanced Format (4k) drives */
 282                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "WDC WD???PVT*", "*" },
 283                 /*quirks*/ADA_Q_4K
 284         },
 285         {
 286                 /* WDC Scorpio Blue Advanced Format (4k) drives */
 287                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "WDC WD?????PVT*", "*" },
 288                 /*quirks*/ADA_Q_4K
 289         },
 290         /* SSDs */
 291         {
 292                 /*
 293                  * Corsair Force 2 SSDs
 294                  * 4k optimised & trim only works in 4k requests + 4k aligned
 295                  */
 296                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "Corsair CSSD-F*", "*" },
 297                 /*quirks*/ADA_Q_4K
 298         },
 299         {
 300                 /*
 301                  * Corsair Force 3 SSDs
 302                  * 4k optimised & trim only works in 4k requests + 4k aligned
 303                  */
 304                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "Corsair Force 3*", "*" },
 305                 /*quirks*/ADA_Q_4K
 306         },
 307         {
 308                 /*
 309                  * Corsair Neutron GTX SSDs
 310                  * 4k optimised & trim only works in 4k requests + 4k aligned
 311                  */
 312                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "Corsair Neutron GTX*", "*" },
 313                 /*quirks*/ADA_Q_4K
 314         },
 315         {
 316                 /*
 317                  * Corsair Force GT & GS SSDs
 318                  * 4k optimised & trim only works in 4k requests + 4k aligned
 319                  */
 320                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "Corsair Force G*", "*" },
 321                 /*quirks*/ADA_Q_4K
 322         },
 323         {
 324                 /*
 325                  * Crucial M4 SSDs
 326                  * 4k optimised & trim only works in 4k requests + 4k aligned
 327                  */
 328                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "M4-CT???M4SSD2*", "*" },
 329                 /*quirks*/ADA_Q_4K
 330         },
 331         {
 332                 /*
 333                  * Crucial RealSSD C300 SSDs
 334                  * 4k optimised
 335                  */
 336                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "C300-CTFDDAC???MAG*",
 337                 "*" }, /*quirks*/ADA_Q_4K
 338         },
 339         {
 340                 /*
 341                  * Intel 320 Series SSDs
 342                  * 4k optimised & trim only works in 4k requests + 4k aligned
 343                  */
 344                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "INTEL SSDSA2CW*", "*" },
 345                 /*quirks*/ADA_Q_4K
 346         },
 347         {
 348                 /*
 349                  * Intel 330 Series SSDs
 350                  * 4k optimised & trim only works in 4k requests + 4k aligned
 351                  */
 352                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "INTEL SSDSC2CT*", "*" },
 353                 /*quirks*/ADA_Q_4K
 354         },
 355         {
 356                 /*
 357                  * Intel 510 Series SSDs
 358                  * 4k optimised & trim only works in 4k requests + 4k aligned
 359                  */
 360                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "INTEL SSDSC2MH*", "*" },
 361                 /*quirks*/ADA_Q_4K
 362         },
 363         {
 364                 /*
 365                  * Intel 520 Series SSDs
 366                  * 4k optimised & trim only works in 4k requests + 4k aligned
 367                  */
 368                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "INTEL SSDSC2BW*", "*" },
 369                 /*quirks*/ADA_Q_4K
 370         },
 371         {
 372                 /*
 373                  * Intel X25-M Series SSDs
 374                  * 4k optimised & trim only works in 4k requests + 4k aligned
 375                  */
 376                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "INTEL SSDSA2M*", "*" },
 377                 /*quirks*/ADA_Q_4K
 378         },
 379         {
 380                 /*
 381                  * Kingston E100 Series SSDs
 382                  * 4k optimised & trim only works in 4k requests + 4k aligned
 383                  */
 384                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "KINGSTON SE100S3*", "*" },
 385                 /*quirks*/ADA_Q_4K
 386         },
 387         {
 388                 /*
 389                  * Kingston HyperX 3k SSDs
 390                  * 4k optimised & trim only works in 4k requests + 4k aligned
 391                  */
 392                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "KINGSTON SH103S3*", "*" },
 393                 /*quirks*/ADA_Q_4K
 394         },
 395         {
 396                 /*
 397                  * Marvell SSDs (entry taken from OpenSolaris)
 398                  * 4k optimised & trim only works in 4k requests + 4k aligned
 399                  */
 400                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "MARVELL SD88SA02*", "*" },
 401                 /*quirks*/ADA_Q_4K
 402         },
 403         {
 404                 /*
 405                  * OCZ Agility 2 SSDs
 406                  * 4k optimised & trim only works in 4k requests + 4k aligned
 407                  */
 408                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "OCZ-AGILITY2*", "*" },
 409                 /*quirks*/ADA_Q_4K
 410         },
 411         {
 412                 /*
 413                  * OCZ Agility 3 SSDs
 414                  * 4k optimised & trim only works in 4k requests + 4k aligned
 415                  */
 416                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "OCZ-AGILITY3*", "*" },
 417                 /*quirks*/ADA_Q_4K
 418         },
 419         {
 420                 /*
 421                  * OCZ Deneva R Series SSDs
 422                  * 4k optimised & trim only works in 4k requests + 4k aligned
 423                  */
 424                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "DENRSTE251M45*", "*" },
 425                 /*quirks*/ADA_Q_4K
 426         },
 427         {
 428                 /*
 429                  * OCZ Vertex 2 SSDs (inc pro series)
 430                  * 4k optimised & trim only works in 4k requests + 4k aligned
 431                  */
 432                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "OCZ?VERTEX2*", "*" },
 433                 /*quirks*/ADA_Q_4K
 434         },
 435         {
 436                 /*
 437                  * OCZ Vertex 3 SSDs
 438                  * 4k optimised & trim only works in 4k requests + 4k aligned
 439                  */
 440                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "OCZ-VERTEX3*", "*" },
 441                 /*quirks*/ADA_Q_4K
 442         },
 443         {
 444                 /*
 445                  * OCZ Vertex 4 SSDs
 446                  * 4k optimised & trim only works in 4k requests + 4k aligned
 447                  */
 448                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "OCZ-VERTEX4*", "*" },
 449                 /*quirks*/ADA_Q_4K
 450         },
 451         {
 452                 /*
 453                  * Samsung 830 Series SSDs
 454                  * 4k optimised
 455                  */
 456                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "SAMSUNG SSD 830 Series*", "*" },
 457                 /*quirks*/ADA_Q_4K
 458         },
 459         {
 460                 /*
 461                  * Samsung 840 SSDs
 462                  * 4k optimised
 463                  */
 464                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "Samsung SSD 840*", "*" },
 465                 /*quirks*/ADA_Q_4K
 466         },
 467         {
 468                 /*
 469                  * Samsung 843T Series SSDs
 470                  * 4k optimised
 471                  */
 472                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "SAMSUNG MZ7WD*", "*" },
 473                 /*quirks*/ADA_Q_4K
 474         },
 475         {
 476                 /*
 477                  * Samsung 850 SSDs
 478                  * 4k optimised
 479                  */
 480                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "Samsung SSD 850*", "*" },
 481                 /*quirks*/ADA_Q_4K
 482         },
 483         {
 484                 /*
 485                  * Samsung PM853T Series SSDs
 486                  * 4k optimised
 487                  */
 488                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "SAMSUNG MZ7GE*", "*" },
 489                 /*quirks*/ADA_Q_4K
 490         },
 491         {
 492                 /*
 493                  * SuperTalent TeraDrive CT SSDs
 494                  * 4k optimised & trim only works in 4k requests + 4k aligned
 495                  */
 496                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "FTM??CT25H*", "*" },
 497                 /*quirks*/ADA_Q_4K
 498         },
 499         {
 500                 /*
 501                  * XceedIOPS SATA SSDs
 502                  * 4k optimised
 503                  */
 504                 { T_DIRECT, SIP_MEDIA_FIXED, "*", "SG9XCS2D*", "*" },
 505                 /*quirks*/ADA_Q_4K
 506         },
 507         {
 508                 /* Default */
 509                 {
 510                   T_ANY, SIP_MEDIA_REMOVABLE|SIP_MEDIA_FIXED,
 511                   /*vendor*/"*", /*product*/"*", /*revision*/"*"
 512                 },
 513                 /*quirks*/0
 514         },
 515 };
 516
 517 static  disk_strategy_t adastrategy;
 518 static  dumper_t        adadump;
 519 static  periph_init_t   adainit;
 520 static  void            adaasync(void *callback_arg, u_int32_t code,
 521                                 struct cam_path *path, void *arg);
 522 static  void            adasysctlinit(void *context, int pending);
 523 static  periph_ctor_t   adaregister;
 524 static  periph_dtor_t   adacleanup;
 525 static  periph_start_t  adastart;
 526 static  periph_oninv_t  adaoninvalidate;
 527 static  void            adadone(struct cam_periph *periph,
 528                                union ccb *done_ccb);
 529 static  int             adaerror(union ccb *ccb, u_int32_t cam_flags,
 530                                 u_int32_t sense_flags);
 531 static void             adagetparams(struct cam_periph *periph,
 532                                 struct ccb_getdev *cgd);
 533 static timeout_t        adasendorderedtag;
 534 static void             adashutdown(void *arg, int howto);
 535 static void             adasuspend(void *arg);
 536 static void             adaresume(void *arg);
 537
 538 #ifndef ADA_DEFAULT_LEGACY_ALIASES
 539 #define ADA_DEFAULT_LEGACY_ALIASES      1
 540 #endif
 541
 542 #ifndef ADA_DEFAULT_TIMEOUT
 543 #define ADA_DEFAULT_TIMEOUT 30  /* Timeout in seconds */
 544 #endif
 545
 546 #ifndef ADA_DEFAULT_RETRY
 547 #define ADA_DEFAULT_RETRY       4
 548 #endif
 549
 550 #ifndef ADA_DEFAULT_SEND_ORDERED
 551 #define ADA_DEFAULT_SEND_ORDERED        1
 552 #endif
 553
 554 #ifndef ADA_DEFAULT_SPINDOWN_SHUTDOWN
 555 #define ADA_DEFAULT_SPINDOWN_SHUTDOWN   1
 556 #endif
 557
 558 #ifndef ADA_DEFAULT_SPINDOWN_SUSPEND
 559 #define ADA_DEFAULT_SPINDOWN_SUSPEND    1
 560 #endif
 561
 562 #ifndef ADA_DEFAULT_READ_AHEAD
 563 #define ADA_DEFAULT_READ_AHEAD  1
 564 #endif
 565
 566 #ifndef ADA_DEFAULT_WRITE_CACHE
 567 #define ADA_DEFAULT_WRITE_CACHE 1
 568 #endif
 569
 570 #define ADA_RA  (softc->read_ahead >= 0 ? \
 571                  softc->read_ahead : ada_read_ahead)
 572 #define ADA_WC  (softc->write_cache >= 0 ? \
 573                  softc->write_cache : ada_write_cache)
 574 #define ADA_SIO (softc->sort_io_queue >= 0 ? \
 575                  softc->sort_io_queue : cam_sort_io_queues)
 576
 577 /*
 578  * Most platforms map firmware geometry to actual, but some don't.  If
 579  * not overridden, default to nothing.
 580  */
 581 #ifndef ata_disk_firmware_geom_adjust
 582 #define ata_disk_firmware_geom_adjust(disk)
 583 #endif
 584
 585 static int ada_legacy_aliases = ADA_DEFAULT_LEGACY_ALIASES;
 586 static int ada_retry_count = ADA_DEFAULT_RETRY;
 587 static int ada_default_timeout = ADA_DEFAULT_TIMEOUT;
 588 static int ada_send_ordered = ADA_DEFAULT_SEND_ORDERED;
 589 static int ada_spindown_shutdown = ADA_DEFAULT_SPINDOWN_SHUTDOWN;
 590 static int ada_spindown_suspend = ADA_DEFAULT_SPINDOWN_SUSPEND;
 591 static int ada_read_ahead = ADA_DEFAULT_READ_AHEAD;
 592 static int ada_write_cache = ADA_DEFAULT_WRITE_CACHE;
 593
 594 static SYSCTL_NODE(_kern_cam, OID_AUTO, ada, CTLFLAG_RD, 0,
 595             "CAM Direct Access Disk driver");
 596 SYSCTL_INT(_kern_cam_ada, OID_AUTO, legacy_aliases, CTLFLAG_RWTUN,
 597            &ada_legacy_aliases, 0, "Create legacy-like device aliases");
 598 SYSCTL_INT(_kern_cam_ada, OID_AUTO, retry_count, CTLFLAG_RWTUN,
 599            &ada_retry_count, 0, "Normal I/O retry count");
 600 SYSCTL_INT(_kern_cam_ada, OID_AUTO, default_timeout, CTLFLAG_RWTUN,
 601            &ada_default_timeout, 0, "Normal I/O timeout (in seconds)");
 602 SYSCTL_INT(_kern_cam_ada, OID_AUTO, send_ordered, CTLFLAG_RWTUN,
 603            &ada_send_ordered, 0, "Send Ordered Tags");
 604 SYSCTL_INT(_kern_cam_ada, OID_AUTO, spindown_shutdown, CTLFLAG_RWTUN,
 605            &ada_spindown_shutdown, 0, "Spin down upon shutdown");
 606 SYSCTL_INT(_kern_cam_ada, OID_AUTO, spindown_suspend, CTLFLAG_RWTUN,
 607            &ada_spindown_suspend, 0, "Spin down upon suspend");
 608 SYSCTL_INT(_kern_cam_ada, OID_AUTO, read_ahead, CTLFLAG_RWTUN,
 609            &ada_read_ahead, 0, "Enable disk read-ahead");
 610 SYSCTL_INT(_kern_cam_ada, OID_AUTO, write_cache, CTLFLAG_RWTUN,
 611            &ada_write_cache, 0, "Enable disk write cache");
 612
 613 /*
 614  * ADA_ORDEREDTAG_INTERVAL determines how often, relative
 615  * to the default timeout, we check to see whether an ordered
 616  * tagged transaction is appropriate to prevent simple tag
 617  * starvation.  Since we'd like to ensure that there is at least
 618  * 1/2 of the timeout length left for a starved transaction to
 619  * complete after we've sent an ordered tag, we must poll at least
 620  * four times in every timeout period.  This takes care of the worst
 621  * case where a starved transaction starts during an interval that
 622  * meets the requirement "don't send an ordered tag" test so it takes
 623  * us two intervals to determine that a tag must be sent.
 624  */
 625 #ifndef ADA_ORDEREDTAG_INTERVAL
 626 #define ADA_ORDEREDTAG_INTERVAL 4
 627 #endif
 628
 629 static struct periph_driver adadriver =
 630 {
 631         adainit, "ada",
 632         TAILQ_HEAD_INITIALIZER(adadriver.units), /* generation */ 0
 633 };
 634
 635 PERIPHDRIVER_DECLARE(ada, adadriver);
 636
 637 static MALLOC_DEFINE(M_ATADA, "ata_da", "ata_da buffers");
 638
 639 static int
 640 adaopen(struct disk *dp)
 641 {
 642         struct cam_periph *periph;
 643         struct ada_softc *softc;
 644         int error;
 645
 646         periph = (struct cam_periph *)dp->d_drv1;
 647         if (cam_periph_acquire(periph) != CAM_REQ_CMP) {
 648                 return(ENXIO);
 649         }
 650
 651         cam_periph_lock(periph);
 652         if ((error = cam_periph_hold(periph, PRIBIO|PCATCH)) != 0) {
 653                 cam_periph_unlock(periph);
 654                 cam_periph_release(periph);
 655                 return (error);
 656         }
 657
 658         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE | CAM_DEBUG_PERIPH,
 659             ("adaopen\n"));
 660
 661         softc = (struct ada_softc *)periph->softc;
 662         softc->flags |= ADA_FLAG_OPEN;
 663
 664         cam_periph_unhold(periph);
 665         cam_periph_unlock(periph);
 666         return (0);
 667 }
 668
 669 static int
 670 adaclose(struct disk *dp)
 671 {
 672         struct  cam_periph *periph;
 673         struct  ada_softc *softc;
 674         union ccb *ccb;
 675         int error;
 676
 677         periph = (struct cam_periph *)dp->d_drv1;
 678         softc = (struct ada_softc *)periph->softc;
 679         cam_periph_lock(periph);
 680
 681         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE | CAM_DEBUG_PERIPH,
 682             ("adaclose\n"));
 683
 684         /* We only sync the cache if the drive is capable of it. */
 685         if ((softc->flags & ADA_FLAG_DIRTY) != 0 &&
 686             (softc->flags & ADA_FLAG_CAN_FLUSHCACHE) != 0 &&
 687             (periph->flags & CAM_PERIPH_INVALID) == 0 &&
 688             cam_periph_hold(periph, PRIBIO) == 0) {
 689
 690                 ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL);
 691                 cam_fill_ataio(&ccb->ataio,
 692                                     1,
 693                                     adadone,
 694                                     CAM_DIR_NONE,
 695                                     0,
 696                                     NULL,
 697                                     0,
 698                                     ada_default_timeout*1000);
 699
 700                 if (softc->flags & ADA_FLAG_CAN_48BIT)
 701                         ata_48bit_cmd(&ccb->ataio, ATA_FLUSHCACHE48, 0, 0, 0);
 702                 else
 703                         ata_28bit_cmd(&ccb->ataio, ATA_FLUSHCACHE, 0, 0, 0);
 704                 error = cam_periph_runccb(ccb, adaerror, /*cam_flags*/0,
 705                     /*sense_flags*/0, softc->disk->d_devstat);
 706
 707                 if (error != 0)
 708                         xpt_print(periph->path, "Synchronize cache failed\n");
 709                 else
 710                         softc->flags &= ~ADA_FLAG_DIRTY;
 711                 xpt_release_ccb(ccb);
 712                 cam_periph_unhold(periph);
 713         }
 714
 715         softc->flags &= ~ADA_FLAG_OPEN;
 716
 717         while (softc->refcount != 0)
 718                 cam_periph_sleep(periph, &softc->refcount, PRIBIO, "adaclose", 1);
 719         cam_periph_unlock(periph);
 720         cam_periph_release(periph);
 721         return (0);
 722 }
 723
 724 static void
 725 adaschedule(struct cam_periph *periph)
 726 {
 727         struct ada_softc *softc = (struct ada_softc *)periph->softc;
 728
 729         if (softc->state != ADA_STATE_NORMAL)
 730                 return;
 731
 732         /* Check if we have more work to do. */
 733         if (bioq_first(&softc->bio_queue) ||
 734             (!softc->trim_running && bioq_first(&softc->trim_queue))) {
 735                 xpt_schedule(periph, CAM_PRIORITY_NORMAL);
 736         }
 737 }
 738
 739 /*
 740  * Actually translate the requested transfer into one the physical driver
 741  * can understand.  The transfer is described by a buf and will include
 742  * only one physical transfer.
 743  */
 744 static void
 745 adastrategy(struct bio *bp)
 746 {
 747         struct cam_periph *periph;
 748         struct ada_softc *softc;
 749
 750         periph = (struct cam_periph *)bp->bio_disk->d_drv1;
 751         softc = (struct ada_softc *)periph->softc;
 752
 753         cam_periph_lock(periph);
 754
 755         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("adastrategy(%p)\n", bp));
 756
 757         /*
 758          * If the device has been made invalid, error out
 759          */
 760         if ((periph->flags & CAM_PERIPH_INVALID) != 0) {
 761                 cam_periph_unlock(periph);
 762                 biofinish(bp, NULL, ENXIO);
 763                 return;
 764         }
 765
 766         /*
 767          * Place it in the queue of disk activities for this disk
 768          */
 769         if (bp->bio_cmd == BIO_DELETE) {
 770                 bioq_disksort(&softc->trim_queue, bp);
 771         } else {
 772                 if (ADA_SIO)
 773                     bioq_disksort(&softc->bio_queue, bp);
 774                 else
 775                     bioq_insert_tail(&softc->bio_queue, bp);
 776         }
 777
 778         /*
 779          * Schedule ourselves for performing the work.
 780          */
 781         adaschedule(periph);
 782         cam_periph_unlock(periph);
 783
 784         return;
 785 }
 786
 787 static int
 788 adadump(void *arg, void *virtual, vm_offset_t physical, off_t offset, size_t length)
 789 {
 790         struct      cam_periph *periph;
 791         struct      ada_softc *softc;
 792         u_int       secsize;
 793         union       ccb ccb;
 794         struct      disk *dp;
 795         uint64_t    lba;
 796         uint16_t    count;
 797         int         error = 0;
 798
 799         dp = arg;
 800         periph = dp->d_drv1;
 801         softc = (struct ada_softc *)periph->softc;
 802         cam_periph_lock(periph);
 803         secsize = softc->params.secsize;
 804         lba = offset / secsize;
 805         count = length / secsize;
 806
 807         if ((periph->flags & CAM_PERIPH_INVALID) != 0) {
 808                 cam_periph_unlock(periph);
 809                 return (ENXIO);
 810         }
 811
 812         if (length > 0) {
 813                 xpt_setup_ccb(&ccb.ccb_h, periph->path, CAM_PRIORITY_NORMAL);
 814                 ccb.ccb_h.ccb_state = ADA_CCB_DUMP;
 815                 cam_fill_ataio(&ccb.ataio,
 816                     0,
 817                     adadone,
 818                     CAM_DIR_OUT,
 819                     0,
 820                     (u_int8_t *) virtual,
 821                     length,
 822                     ada_default_timeout*1000);
 823                 if ((softc->flags & ADA_FLAG_CAN_48BIT) &&
 824                     (lba + count >= ATA_MAX_28BIT_LBA ||
 825                     count >= 256)) {
 826                         ata_48bit_cmd(&ccb.ataio, ATA_WRITE_DMA48,
 827                             0, lba, count);
 828                 } else {
 829                         ata_28bit_cmd(&ccb.ataio, ATA_WRITE_DMA,
 830                             0, lba, count);
 831                 }
 832                 xpt_polled_action(&ccb);
 833
 834                 error = cam_periph_error(&ccb,
 835                     0, SF_NO_RECOVERY | SF_NO_RETRY, NULL);
 836                 if ((ccb.ccb_h.status & CAM_DEV_QFRZN) != 0)
 837                         cam_release_devq(ccb.ccb_h.path, /*relsim_flags*/0,
 838                             /*reduction*/0, /*timeout*/0, /*getcount_only*/0);
 839                 if (error != 0)
 840                         printf("Aborting dump due to I/O error.\n");
 841
 842                 cam_periph_unlock(periph);
 843                 return (error);
 844         }
 845
 846         if (softc->flags & ADA_FLAG_CAN_FLUSHCACHE) {
 847                 xpt_setup_ccb(&ccb.ccb_h, periph->path, CAM_PRIORITY_NORMAL);
 848
 849                 ccb.ccb_h.ccb_state = ADA_CCB_DUMP;
 850                 cam_fill_ataio(&ccb.ataio,
 851                                     0,
 852                                     adadone,
 853                                     CAM_DIR_NONE,
 854                                     0,
 855                                     NULL,
 856                                     0,
 857                                     ada_default_timeout*1000);
 858
 859                 if (softc->flags & ADA_FLAG_CAN_48BIT)
 860                         ata_48bit_cmd(&ccb.ataio, ATA_FLUSHCACHE48, 0, 0, 0);
 861                 else
 862                         ata_28bit_cmd(&ccb.ataio, ATA_FLUSHCACHE, 0, 0, 0);
 863                 xpt_polled_action(&ccb);
 864
 865                 error = cam_periph_error(&ccb,
 866                     0, SF_NO_RECOVERY | SF_NO_RETRY, NULL);
 867                 if ((ccb.ccb_h.status & CAM_DEV_QFRZN) != 0)
 868                         cam_release_devq(ccb.ccb_h.path, /*relsim_flags*/0,
 869                             /*reduction*/0, /*timeout*/0, /*getcount_only*/0);
 870                 if (error != 0)
 871                         xpt_print(periph->path, "Synchronize cache failed\n");
 872         }
 873         cam_periph_unlock(periph);
 874         return (error);
 875 }
 876
 877 static void
 878 adainit(void)
 879 {
 880         cam_status status;
 881
 882         /*
 883          * Install a global async callback.  This callback will
 884          * receive async callbacks like "new device found".
 885          */
 886         status = xpt_register_async(AC_FOUND_DEVICE, adaasync, NULL, NULL);
 887
 888         if (status != CAM_REQ_CMP) {
 889                 printf("ada: Failed to attach master async callback "
 890                        "due to status 0x%x!\n", status);
 891         } else if (ada_send_ordered) {
 892
 893                 /* Register our event handlers */
 894                 if ((EVENTHANDLER_REGISTER(power_suspend, adasuspend,
 895                                            NULL, EVENTHANDLER_PRI_LAST)) == NULL)
 896                     printf("adainit: power event registration failed!\n");
 897                 if ((EVENTHANDLER_REGISTER(power_resume, adaresume,
 898                                            NULL, EVENTHANDLER_PRI_LAST)) == NULL)
 899                     printf("adainit: power event registration failed!\n");
 900                 if ((EVENTHANDLER_REGISTER(shutdown_post_sync, adashutdown,
 901                                            NULL, SHUTDOWN_PRI_DEFAULT)) == NULL)
 902                     printf("adainit: shutdown event registration failed!\n");
 903         }
 904 }
 905
 906 /*
 907  * Callback from GEOM, called when it has finished cleaning up its
 908  * resources.
 909  */
 910 static void
 911 adadiskgonecb(struct disk *dp)
 912 {
 913         struct cam_periph *periph;
 914
 915         periph = (struct cam_periph *)dp->d_drv1;
 916
 917         cam_periph_release(periph);
 918 }
 919
 920 static void
 921 adaoninvalidate(struct cam_periph *periph)
 922 {
 923         struct ada_softc *softc;
 924
 925         softc = (struct ada_softc *)periph->softc;
 926
 927         /*
 928          * De-register any async callbacks.
 929          */
 930         xpt_register_async(0, adaasync, periph, periph->path);
 931
 932         /*
 933          * Return all queued I/O with ENXIO.
 934          * XXX Handle any transactions queued to the card
 935          *     with XPT_ABORT_CCB.
 936          */
 937         bioq_flush(&softc->bio_queue, NULL, ENXIO);
 938         bioq_flush(&softc->trim_queue, NULL, ENXIO);
 939
 940         disk_gone(softc->disk);
 941 }
 942
 943 static void
 944 adacleanup(struct cam_periph *periph)
 945 {
 946         struct ada_softc *softc;
 947
 948         softc = (struct ada_softc *)periph->softc;
 949
 950         cam_periph_unlock(periph);
 951
 952         /*
 953          * If we can't free the sysctl tree, oh well...
 954          */
 955         if ((softc->flags & ADA_FLAG_SCTX_INIT) != 0
 956             && sysctl_ctx_free(&softc->sysctl_ctx) != 0) {
 957                 xpt_print(periph->path, "can't remove sysctl context\n");
 958         }
 959
 960         disk_destroy(softc->disk);
 961         callout_drain(&softc->sendordered_c);
 962         free(softc, M_DEVBUF);
 963         cam_periph_lock(periph);
 964 }
 965
 966 static void
 967 adaasync(void *callback_arg, u_int32_t code,
 968         struct cam_path *path, void *arg)
 969 {
 970         struct ccb_getdev cgd;
 971         struct cam_periph *periph;
 972         struct ada_softc *softc;
 973
 974         periph = (struct cam_periph *)callback_arg;
 975         switch (code) {
 976         case AC_FOUND_DEVICE:
 977         {
 978                 struct ccb_getdev *cgd;
 979                 cam_status status;
 980
 981                 cgd = (struct ccb_getdev *)arg;
 982                 if (cgd == NULL)
 983                         break;
 984
 985                 if (cgd->protocol != PROTO_ATA)
 986                         break;
 987
 988                 /*
 989                  * Allocate a peripheral instance for
 990                  * this device and start the probe
 991                  * process.
 992                  */
 993                 status = cam_periph_alloc(adaregister, adaoninvalidate,
 994                                           adacleanup, adastart,
 995                                           "ada", CAM_PERIPH_BIO,
 996                                           path, adaasync,
 997                                           AC_FOUND_DEVICE, cgd);
 998
 999                 if (status != CAM_REQ_CMP
1000                  && status != CAM_REQ_INPROG)
1001                         printf("adaasync: Unable to attach to new device "
1002                                 "due to status 0x%x\n", status);
1003                 break;
1004         }
1005         case AC_GETDEV_CHANGED:
1006         {
1007                 softc = (struct ada_softc *)periph->softc;
1008                 xpt_setup_ccb(&cgd.ccb_h, periph->path, CAM_PRIORITY_NORMAL);
1009                 cgd.ccb_h.func_code = XPT_GDEV_TYPE;
1010                 xpt_action((union ccb *)&cgd);
1011
1012                 if ((cgd.ident_data.capabilities1 & ATA_SUPPORT_DMA) &&
1013                     (cgd.inq_flags & SID_DMA))
1014                         softc->flags |= ADA_FLAG_CAN_DMA;
1015                 else
1016                         softc->flags &= ~ADA_FLAG_CAN_DMA;
1017                 if (cgd.ident_data.support.command2 & ATA_SUPPORT_ADDRESS48) {
1018                         softc->flags |= ADA_FLAG_CAN_48BIT;
1019                         if (cgd.inq_flags & SID_DMA48)
1020                                 softc->flags |= ADA_FLAG_CAN_DMA48;
1021                         else
1022                                 softc->flags &= ~ADA_FLAG_CAN_DMA48;
1023                 } else
1024                         softc->flags &= ~(ADA_FLAG_CAN_48BIT |
1025                             ADA_FLAG_CAN_DMA48);
1026                 if ((cgd.ident_data.satacapabilities & ATA_SUPPORT_NCQ) &&
1027                     (cgd.inq_flags & SID_DMA) && (cgd.inq_flags & SID_CmdQue))
1028                         softc->flags |= ADA_FLAG_CAN_NCQ;
1029                 else
1030                         softc->flags &= ~ADA_FLAG_CAN_NCQ;
1031                 if ((cgd.ident_data.support_dsm & ATA_SUPPORT_DSM_TRIM) &&
1032                     (cgd.inq_flags & SID_DMA))
1033                         softc->flags |= ADA_FLAG_CAN_TRIM;
1034                 else
1035                         softc->flags &= ~ADA_FLAG_CAN_TRIM;
1036
1037                 cam_periph_async(periph, code, path, arg);
1038                 break;
1039         }
1040         case AC_ADVINFO_CHANGED:
1041         {
1042                 uintptr_t buftype;
1043
1044                 buftype = (uintptr_t)arg;
1045                 if (buftype == CDAI_TYPE_PHYS_PATH) {
1046                         struct ada_softc *softc;
1047
1048                         softc = periph->softc;
1049                         disk_attr_changed(softc->disk, "GEOM::physpath",
1050                                           M_NOWAIT);
1051                 }
1052                 break;
1053         }
1054         case AC_SENT_BDR:
1055         case AC_BUS_RESET:
1056         {
1057                 softc = (struct ada_softc *)periph->softc;
1058                 cam_periph_async(periph, code, path, arg);
1059                 if (softc->state != ADA_STATE_NORMAL)
1060                         break;
1061                 xpt_setup_ccb(&cgd.ccb_h, periph->path, CAM_PRIORITY_NORMAL);
1062                 cgd.ccb_h.func_code = XPT_GDEV_TYPE;
1063                 xpt_action((union ccb *)&cgd);
1064                 if (ADA_RA >= 0 &&
1065                     cgd.ident_data.support.command1 & ATA_SUPPORT_LOOKAHEAD)
1066                         softc->state = ADA_STATE_RAHEAD;
1067                 else if (ADA_WC >= 0 &&
1068                     cgd.ident_data.support.command1 & ATA_SUPPORT_WRITECACHE)
1069                         softc->state = ADA_STATE_WCACHE;
1070                 else
1071                     break;
1072                 if (cam_periph_acquire(periph) != CAM_REQ_CMP)
1073                         softc->state = ADA_STATE_NORMAL;
1074                 else
1075                         xpt_schedule(periph, CAM_PRIORITY_DEV);
1076         }
1077         default:
1078                 cam_periph_async(periph, code, path, arg);
1079                 break;
1080         }
1081 }
1082
1083 static void
1084 adasysctlinit(void *context, int pending)
1085 {
1086         struct cam_periph *periph;
1087         struct ada_softc *softc;
1088         char tmpstr[80], tmpstr2[80];
1089
1090         periph = (struct cam_periph *)context;
1091
1092         /* periph was held for us when this task was enqueued */
1093         if ((periph->flags & CAM_PERIPH_INVALID) != 0) {
1094                 cam_periph_release(periph);
1095                 return;
1096         }
1097
1098         softc = (struct ada_softc *)periph->softc;
1099         snprintf(tmpstr, sizeof(tmpstr), "CAM ADA unit %d", periph->unit_number);
1100         snprintf(tmpstr2, sizeof(tmpstr2), "%d", periph->unit_number);
1101
1102         sysctl_ctx_init(&softc->sysctl_ctx);
1103         softc->flags |= ADA_FLAG_SCTX_INIT;
1104         softc->sysctl_tree = SYSCTL_ADD_NODE(&softc->sysctl_ctx,
1105                 SYSCTL_STATIC_CHILDREN(_kern_cam_ada), OID_AUTO, tmpstr2,
1106                 CTLFLAG_RD, 0, tmpstr);
1107         if (softc->sysctl_tree == NULL) {
1108                 printf("adasysctlinit: unable to allocate sysctl tree\n");
1109                 cam_periph_release(periph);
1110                 return;
1111         }
1112
1113         SYSCTL_ADD_INT(&softc->sysctl_ctx, SYSCTL_CHILDREN(softc->sysctl_tree),
1114                 OID_AUTO, "read_ahead", CTLFLAG_RW | CTLFLAG_MPSAFE,
1115                 &softc->read_ahead, 0, "Enable disk read ahead.");
1116         SYSCTL_ADD_INT(&softc->sysctl_ctx, SYSCTL_CHILDREN(softc->sysctl_tree),
1117                 OID_AUTO, "write_cache", CTLFLAG_RW | CTLFLAG_MPSAFE,
1118                 &softc->write_cache, 0, "Enable disk write cache.");
1119         SYSCTL_ADD_INT(&softc->sysctl_ctx, SYSCTL_CHILDREN(softc->sysctl_tree),
1120                 OID_AUTO, "sort_io_queue", CTLFLAG_RW | CTLFLAG_MPSAFE,
1121                 &softc->sort_io_queue, 0,
1122                 "Sort IO queue to try and optimise disk access patterns");
1123 #ifdef ADA_TEST_FAILURE
1124         /*
1125          * Add a 'door bell' sysctl which allows one to set it from userland
1126          * and cause something bad to happen.  For the moment, we only allow
1127          * whacking the next read or write.
1128          */
1129         SYSCTL_ADD_INT(&softc->sysctl_ctx, SYSCTL_CHILDREN(softc->sysctl_tree),
1130                 OID_AUTO, "force_read_error", CTLFLAG_RW | CTLFLAG_MPSAFE,
1131                 &softc->force_read_error, 0,
1132                 "Force a read error for the next N reads.");
1133         SYSCTL_ADD_INT(&softc->sysctl_ctx, SYSCTL_CHILDREN(softc->sysctl_tree),
1134                 OID_AUTO, "force_write_error", CTLFLAG_RW | CTLFLAG_MPSAFE,
1135                 &softc->force_write_error, 0,
1136                 "Force a write error for the next N writes.");
1137         SYSCTL_ADD_INT(&softc->sysctl_ctx, SYSCTL_CHILDREN(softc->sysctl_tree),
1138                 OID_AUTO, "periodic_read_error", CTLFLAG_RW | CTLFLAG_MPSAFE,
1139                 &softc->periodic_read_error, 0,
1140                 "Force a read error every N reads (don't set too low).");
1141 #endif
1142         cam_periph_release(periph);
1143 }
1144
1145 static int
1146 adagetattr(struct bio *bp)
1147 {
1148         int ret;
1149         struct cam_periph *periph;
1150
1151         periph = (struct cam_periph *)bp->bio_disk->d_drv1;
1152         cam_periph_lock(periph);
1153         ret = xpt_getattr(bp->bio_data, bp->bio_length, bp->bio_attribute,
1154             periph->path);
1155         cam_periph_unlock(periph);
1156         if (ret == 0)
1157                 bp->bio_completed = bp->bio_length;
1158         return ret;
1159 }
1160
1161 static cam_status
1162 adaregister(struct cam_periph *periph, void *arg)
1163 {
1164         struct ada_softc *softc;
1165         struct ccb_pathinq cpi;
1166         struct ccb_getdev *cgd;
1167         char   announce_buf[80], buf1[32];
1168         struct disk_params *dp;
1169         caddr_t match;
1170         u_int maxio;
1171         int legacy_id, quirks;
1172
1173         cgd = (struct ccb_getdev *)arg;
1174         if (cgd == NULL) {
1175                 printf("adaregister: no getdev CCB, can't register device\n");
1176                 return(CAM_REQ_CMP_ERR);
1177         }
1178
1179         softc = (struct ada_softc *)malloc(sizeof(*softc), M_DEVBUF,
1180             M_NOWAIT|M_ZERO);
1181
1182         if (softc == NULL) {
1183                 printf("adaregister: Unable to probe new device. "
1184                     "Unable to allocate softc\n");
1185                 return(CAM_REQ_CMP_ERR);
1186         }
1187
1188         bioq_init(&softc->bio_queue);
1189         bioq_init(&softc->trim_queue);
1190
1191         if ((cgd->ident_data.capabilities1 & ATA_SUPPORT_DMA) &&
1192             (cgd->inq_flags & SID_DMA))
1193                 softc->flags |= ADA_FLAG_CAN_DMA;
1194         if (cgd->ident_data.support.command2 & ATA_SUPPORT_ADDRESS48) {
1195                 softc->flags |= ADA_FLAG_CAN_48BIT;
1196                 if (cgd->inq_flags & SID_DMA48)
1197                         softc->flags |= ADA_FLAG_CAN_DMA48;
1198         }
1199         if (cgd->ident_data.support.command2 & ATA_SUPPORT_FLUSHCACHE)
1200                 softc->flags |= ADA_FLAG_CAN_FLUSHCACHE;
1201         if (cgd->ident_data.support.command1 & ATA_SUPPORT_POWERMGT)
1202                 softc->flags |= ADA_FLAG_CAN_POWERMGT;
1203         if ((cgd->ident_data.satacapabilities & ATA_SUPPORT_NCQ) &&
1204             (cgd->inq_flags & SID_DMA) && (cgd->inq_flags & SID_CmdQue))
1205                 softc->flags |= ADA_FLAG_CAN_NCQ;
1206         if ((cgd->ident_data.support_dsm & ATA_SUPPORT_DSM_TRIM) &&
1207             (cgd->inq_flags & SID_DMA)) {
1208                 softc->flags |= ADA_FLAG_CAN_TRIM;
1209                 softc->trim_max_ranges = TRIM_MAX_RANGES;
1210                 if (cgd->ident_data.max_dsm_blocks != 0) {
1211                         softc->trim_max_ranges =
1212                             min(cgd->ident_data.max_dsm_blocks *
1213                                 ATA_DSM_BLK_RANGES, softc->trim_max_ranges);
1214                 }
1215         }
1216         if (cgd->ident_data.support.command2 & ATA_SUPPORT_CFA)
1217                 softc->flags |= ADA_FLAG_CAN_CFA;
1218
1219         periph->softc = softc;
1220
1221         /*
1222          * See if this device has any quirks.
1223          */
1224         match = cam_quirkmatch((caddr_t)&cgd->ident_data,
1225                                (caddr_t)ada_quirk_table,
1226                                sizeof(ada_quirk_table)/sizeof(*ada_quirk_table),
1227                                sizeof(*ada_quirk_table), ata_identify_match);
1228         if (match != NULL)
1229                 softc->quirks = ((struct ada_quirk_entry *)match)->quirks;
1230         else
1231                 softc->quirks = ADA_Q_NONE;
1232
1233         bzero(&cpi, sizeof(cpi));
1234         xpt_setup_ccb(&cpi.ccb_h, periph->path, CAM_PRIORITY_NONE);
1235         cpi.ccb_h.func_code = XPT_PATH_INQ;
1236         xpt_action((union ccb *)&cpi);
1237
1238         TASK_INIT(&softc->sysctl_task, 0, adasysctlinit, periph);
1239
1240         /*
1241          * Register this media as a disk
1242          */
1243         (void)cam_periph_hold(periph, PRIBIO);
1244         cam_periph_unlock(periph);
1245         snprintf(announce_buf, sizeof(announce_buf),
1246             "kern.cam.ada.%d.quirks", periph->unit_number);
1247         quirks = softc->quirks;
1248         TUNABLE_INT_FETCH(announce_buf, &quirks);
1249         softc->quirks = quirks;
1250         softc->read_ahead = -1;
1251         snprintf(announce_buf, sizeof(announce_buf),
1252             "kern.cam.ada.%d.read_ahead", periph->unit_number);
1253         TUNABLE_INT_FETCH(announce_buf, &softc->read_ahead);
1254         softc->write_cache = -1;
1255         snprintf(announce_buf, sizeof(announce_buf),
1256             "kern.cam.ada.%d.write_cache", periph->unit_number);
1257         TUNABLE_INT_FETCH(announce_buf, &softc->write_cache);
1258         /* Disable queue sorting for non-rotational media by default. */
1259         if (cgd->ident_data.media_rotation_rate == ATA_RATE_NON_ROTATING)
1260                 softc->sort_io_queue = 0;
1261         else
1262                 softc->sort_io_queue = -1;
1263         adagetparams(periph, cgd);
1264         softc->disk = disk_alloc();
1265         softc->disk->d_rotation_rate = cgd->ident_data.media_rotation_rate;
1266         softc->disk->d_devstat = devstat_new_entry(periph->periph_name,
1267                           periph->unit_number, softc->params.secsize,
1268                           DEVSTAT_ALL_SUPPORTED,
1269                           DEVSTAT_TYPE_DIRECT |
1270                           XPORT_DEVSTAT_TYPE(cpi.transport),
1271                           DEVSTAT_PRIORITY_DISK);
1272         softc->disk->d_open = adaopen;
1273         softc->disk->d_close = adaclose;
1274         softc->disk->d_strategy = adastrategy;
1275         softc->disk->d_getattr = adagetattr;
1276         softc->disk->d_dump = adadump;
1277         softc->disk->d_gone = adadiskgonecb;
1278         softc->disk->d_name = "ada";
1279         softc->disk->d_drv1 = periph;
1280         maxio = cpi.maxio;              /* Honor max I/O size of SIM */
1281         if (maxio == 0)
1282                 maxio = DFLTPHYS;       /* traditional default */
1283         else if (maxio > MAXPHYS)
1284                 maxio = MAXPHYS;        /* for safety */
1285         if (softc->flags & ADA_FLAG_CAN_48BIT)
1286                 maxio = min(maxio, 65536 * softc->params.secsize);
1287         else                                    /* 28bit ATA command limit */
1288                 maxio = min(maxio, 256 * softc->params.secsize);
1289         softc->disk->d_maxsize = maxio;
1290         softc->disk->d_unit = periph->unit_number;
1291         softc->disk->d_flags = DISKFLAG_DIRECT_COMPLETION;
1292         if (softc->flags & ADA_FLAG_CAN_FLUSHCACHE)
1293                 softc->disk->d_flags |= DISKFLAG_CANFLUSHCACHE;
1294         if (softc->flags & ADA_FLAG_CAN_TRIM) {
1295                 softc->disk->d_flags |= DISKFLAG_CANDELETE;
1296                 softc->disk->d_delmaxsize = softc->params.secsize *
1297                                             ATA_DSM_RANGE_MAX *
1298                                             softc->trim_max_ranges;
1299         } else if ((softc->flags & ADA_FLAG_CAN_CFA) &&
1300             !(softc->flags & ADA_FLAG_CAN_48BIT)) {
1301                 softc->disk->d_flags |= DISKFLAG_CANDELETE;
1302                 softc->disk->d_delmaxsize = 256 * softc->params.secsize;
1303         } else
1304                 softc->disk->d_delmaxsize = maxio;
1305         if ((cpi.hba_misc & PIM_UNMAPPED) != 0)
1306                 softc->disk->d_flags |= DISKFLAG_UNMAPPED_BIO;
1307         strlcpy(softc->disk->d_descr, cgd->ident_data.model,
1308             MIN(sizeof(softc->disk->d_descr), sizeof(cgd->ident_data.model)));
1309         strlcpy(softc->disk->d_ident, cgd->ident_data.serial,
1310             MIN(sizeof(softc->disk->d_ident), sizeof(cgd->ident_data.serial)));
1311         softc->disk->d_hba_vendor = cpi.hba_vendor;
1312         softc->disk->d_hba_device = cpi.hba_device;
1313         softc->disk->d_hba_subvendor = cpi.hba_subvendor;
1314         softc->disk->d_hba_subdevice = cpi.hba_subdevice;
1315
1316         softc->disk->d_sectorsize = softc->params.secsize;
1317         softc->disk->d_mediasize = (off_t)softc->params.sectors *
1318             softc->params.secsize;
1319         if (ata_physical_sector_size(&cgd->ident_data) !=
1320             softc->params.secsize) {
1321                 softc->disk->d_stripesize =
1322                     ata_physical_sector_size(&cgd->ident_data);
1323                 softc->disk->d_stripeoffset = (softc->disk->d_stripesize -
1324                     ata_logical_sector_offset(&cgd->ident_data)) %
1325                     softc->disk->d_stripesize;
1326         } else if (softc->quirks & ADA_Q_4K) {
1327                 softc->disk->d_stripesize = 4096;
1328                 softc->disk->d_stripeoffset = 0;
1329         }
1330         softc->disk->d_fwsectors = softc->params.secs_per_track;
1331         softc->disk->d_fwheads = softc->params.heads;
1332         ata_disk_firmware_geom_adjust(softc->disk);
1333
1334         if (ada_legacy_aliases) {
1335 #ifdef ATA_STATIC_ID
1336                 legacy_id = xpt_path_legacy_ata_id(periph->path);
1337 #else
1338                 legacy_id = softc->disk->d_unit;
1339 #endif
1340                 if (legacy_id >= 0) {
1341                         snprintf(announce_buf, sizeof(announce_buf),
1342                             "kern.devalias.%s%d",
1343                             softc->disk->d_name, softc->disk->d_unit);
1344                         snprintf(buf1, sizeof(buf1),
1345                             "ad%d", legacy_id);
1346                         kern_setenv(announce_buf, buf1);
1347                 }
1348         } else
1349                 legacy_id = -1;
1350         /*
1351          * Acquire a reference to the periph before we register with GEOM.
1352          * We'll release this reference once GEOM calls us back (via
1353          * adadiskgonecb()) telling us that our provider has been freed.
1354          */
1355         if (cam_periph_acquire(periph) != CAM_REQ_CMP) {
1356                 xpt_print(periph->path, "%s: lost periph during "
1357                           "registration!\n", __func__);
1358                 cam_periph_lock(periph);
1359                 return (CAM_REQ_CMP_ERR);
1360         }
1361         disk_create(softc->disk, DISK_VERSION);
1362         cam_periph_lock(periph);
1363         cam_periph_unhold(periph);
1364
1365         dp = &softc->params;
1366         snprintf(announce_buf, sizeof(announce_buf),
1367                 "%juMB (%ju %u byte sectors: %dH %dS/T %dC)",
1368                 (uintmax_t)(((uintmax_t)dp->secsize *
1369                 dp->sectors) / (1024*1024)),
1370                 (uintmax_t)dp->sectors,
1371                 dp->secsize, dp->heads,
1372                 dp->secs_per_track, dp->cylinders);
1373         xpt_announce_periph(periph, announce_buf);
1374         xpt_announce_quirks(periph, softc->quirks, ADA_Q_BIT_STRING);
1375         if (legacy_id >= 0)
1376                 printf("%s%d: Previously was known as ad%d\n",
1377                        periph->periph_name, periph->unit_number, legacy_id);
1378
1379         /*
1380          * Create our sysctl variables, now that we know
1381          * we have successfully attached.
1382          */
1383         if (cam_periph_acquire(periph) == CAM_REQ_CMP)
1384                 taskqueue_enqueue(taskqueue_thread, &softc->sysctl_task);
1385
1386         /*
1387          * Add async callbacks for bus reset and
1388          * bus device reset calls.  I don't bother
1389          * checking if this fails as, in most cases,
1390          * the system will function just fine without
1391          * them and the only alternative would be to
1392          * not attach the device on failure.
1393          */
1394         xpt_register_async(AC_SENT_BDR | AC_BUS_RESET | AC_LOST_DEVICE |
1395             AC_GETDEV_CHANGED | AC_ADVINFO_CHANGED,
1396             adaasync, periph, periph->path);
1397
1398         /*
1399          * Schedule a periodic event to occasionally send an
1400          * ordered tag to a device.
1401          */
1402         callout_init_mtx(&softc->sendordered_c, cam_periph_mtx(periph), 0);
1403         callout_reset(&softc->sendordered_c,
1404             (ada_default_timeout * hz) / ADA_ORDEREDTAG_INTERVAL,
1405             adasendorderedtag, softc);
1406
1407         if (ADA_RA >= 0 &&
1408             cgd->ident_data.support.command1 & ATA_SUPPORT_LOOKAHEAD) {
1409                 softc->state = ADA_STATE_RAHEAD;
1410         } else if (ADA_WC >= 0 &&
1411             cgd->ident_data.support.command1 & ATA_SUPPORT_WRITECACHE) {
1412                 softc->state = ADA_STATE_WCACHE;
1413         } else {
1414                 softc->state = ADA_STATE_NORMAL;
1415                 return(CAM_REQ_CMP);
1416         }
1417         if (cam_periph_acquire(periph) != CAM_REQ_CMP)
1418                 softc->state = ADA_STATE_NORMAL;
1419         else
1420                 xpt_schedule(periph, CAM_PRIORITY_DEV);
1421         return(CAM_REQ_CMP);
1422 }
1423
1424 static void
1425 ada_dsmtrim(struct ada_softc *softc, struct bio *bp, struct ccb_ataio *ataio)
1426 {
1427         struct trim_request *req = &softc->trim_req;
1428         uint64_t lastlba = (uint64_t)-1;
1429         int c, lastcount = 0, off, ranges = 0;
1430
1431         bzero(req, sizeof(*req));
1432         TAILQ_INIT(&req->bps);
1433         do {
1434                 uint64_t lba = bp->bio_pblkno;
1435                 int count = bp->bio_bcount / softc->params.secsize;
1436
1437                 bioq_remove(&softc->trim_queue, bp);
1438
1439                 /* Try to extend the previous range. */
1440                 if (lba == lastlba) {
1441                         c = min(count, ATA_DSM_RANGE_MAX - lastcount);
1442                         lastcount += c;
1443                         off = (ranges - 1) * ATA_DSM_RANGE_SIZE;
1444                         req->data[off + 6] = lastcount & 0xff;
1445                         req->data[off + 7] =
1446                                 (lastcount >> 8) & 0xff;
1447                         count -= c;
1448                         lba += c;
1449                 }
1450
1451                 while (count > 0) {
1452                         c = min(count, ATA_DSM_RANGE_MAX);
1453                         off = ranges * ATA_DSM_RANGE_SIZE;
1454                         req->data[off + 0] = lba & 0xff;
1455                         req->data[off + 1] = (lba >> 8) & 0xff;
1456                         req->data[off + 2] = (lba >> 16) & 0xff;
1457                         req->data[off + 3] = (lba >> 24) & 0xff;
1458                         req->data[off + 4] = (lba >> 32) & 0xff;
1459                         req->data[off + 5] = (lba >> 40) & 0xff;
1460                         req->data[off + 6] = c & 0xff;
1461                         req->data[off + 7] = (c >> 8) & 0xff;
1462                         lba += c;
1463                         count -= c;
1464                         lastcount = c;
1465                         ranges++;
1466                         /*
1467                          * Its the caller's responsibility to ensure the
1468                          * request will fit so we don't need to check for
1469                          * overrun here
1470                          */
1471                 }
1472                 lastlba = lba;
1473                 TAILQ_INSERT_TAIL(&req->bps, bp, bio_queue);
1474                 bp = bioq_first(&softc->trim_queue);
1475                 if (bp == NULL ||
1476                     bp->bio_bcount / softc->params.secsize >
1477                     (softc->trim_max_ranges - ranges) * ATA_DSM_RANGE_MAX)
1478                         break;
1479         } while (1);
1480         cam_fill_ataio(ataio,
1481             ada_retry_count,
1482             adadone,
1483             CAM_DIR_OUT,
1484             0,
1485             req->data,
1486             ((ranges + ATA_DSM_BLK_RANGES - 1) /
1487             ATA_DSM_BLK_RANGES) * ATA_DSM_BLK_SIZE,
1488             ada_default_timeout * 1000);
1489         ata_48bit_cmd(ataio, ATA_DATA_SET_MANAGEMENT,
1490             ATA_DSM_TRIM, 0, (ranges + ATA_DSM_BLK_RANGES -
1491             1) / ATA_DSM_BLK_RANGES);
1492 }
1493
1494 static void
1495 ada_cfaerase(struct ada_softc *softc, struct bio *bp, struct ccb_ataio *ataio)
1496 {
1497         struct trim_request *req = &softc->trim_req;
1498         uint64_t lba = bp->bio_pblkno;
1499         uint16_t count = bp->bio_bcount / softc->params.secsize;
1500
1501         bzero(req, sizeof(*req));
1502         TAILQ_INIT(&req->bps);
1503         bioq_remove(&softc->trim_queue, bp);
1504         TAILQ_INSERT_TAIL(&req->bps, bp, bio_queue);
1505
1506         cam_fill_ataio(ataio,
1507             ada_retry_count,
1508             adadone,
1509             CAM_DIR_NONE,
1510             0,
1511             NULL,
1512             0,
1513             ada_default_timeout*1000);
1514
1515         if (count >= 256)
1516                 count = 0;
1517         ata_28bit_cmd(ataio, ATA_CFA_ERASE, 0, lba, count);
1518 }
1519
1520 static void
1521 adastart(struct cam_periph *periph, union ccb *start_ccb)
1522 {
1523         struct ada_softc *softc = (struct ada_softc *)periph->softc;
1524         struct ccb_ataio *ataio = &start_ccb->ataio;
1525
1526         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("adastart\n"));
1527
1528         switch (softc->state) {
1529         case ADA_STATE_NORMAL:
1530         {
1531                 struct bio *bp;
1532                 u_int8_t tag_code;
1533
1534                 /* Run TRIM if not running yet. */
1535                 if (!softc->trim_running &&
1536                     (bp = bioq_first(&softc->trim_queue)) != 0) {
1537                         if (softc->flags & ADA_FLAG_CAN_TRIM) {
1538                                 ada_dsmtrim(softc, bp, ataio);
1539                         } else if ((softc->flags & ADA_FLAG_CAN_CFA) &&
1540                             !(softc->flags & ADA_FLAG_CAN_48BIT)) {
1541                                 ada_cfaerase(softc, bp, ataio);
1542                         } else {
1543                                 /* This can happen if DMA was disabled. */
1544                                 bioq_remove(&softc->trim_queue, bp);
1545                                 biofinish(bp, NULL, EOPNOTSUPP);
1546                                 xpt_release_ccb(start_ccb);
1547                                 adaschedule(periph);
1548                                 return;
1549                         }
1550                         softc->trim_running = 1;
1551                         start_ccb->ccb_h.ccb_state = ADA_CCB_TRIM;
1552                         start_ccb->ccb_h.flags |= CAM_UNLOCKED;
1553                         goto out;
1554                 }
1555                 /* Run regular command. */
1556                 bp = bioq_first(&softc->bio_queue);
1557                 if (bp == NULL) {
1558                         xpt_release_ccb(start_ccb);
1559                         break;
1560                 }
1561                 bioq_remove(&softc->bio_queue, bp);
1562
1563                 if ((bp->bio_flags & BIO_ORDERED) != 0
1564                  || (softc->flags & ADA_FLAG_NEED_OTAG) != 0) {
1565                         softc->flags &= ~ADA_FLAG_NEED_OTAG;
1566                         softc->flags |= ADA_FLAG_WAS_OTAG;
1567                         tag_code = 0;
1568                 } else {
1569                         tag_code = 1;
1570                 }
1571                 switch (bp->bio_cmd) {
1572                 case BIO_WRITE:
1573                         softc->flags |= ADA_FLAG_DIRTY;
1574                         /* FALLTHROUGH */
1575                 case BIO_READ:
1576                 {
1577                         uint64_t lba = bp->bio_pblkno;
1578                         uint16_t count = bp->bio_bcount / softc->params.secsize;
1579 #ifdef ADA_TEST_FAILURE
1580                         int fail = 0;
1581
1582                         /*
1583                          * Support the failure ioctls.  If the command is a
1584                          * read, and there are pending forced read errors, or
1585                          * if a write and pending write errors, then fail this
1586                          * operation with EIO.  This is useful for testing
1587                          * purposes.  Also, support having every Nth read fail.
1588                          *
1589                          * This is a rather blunt tool.
1590                          */
1591                         if (bp->bio_cmd == BIO_READ) {
1592                                 if (softc->force_read_error) {
1593                                         softc->force_read_error--;
1594                                         fail = 1;
1595                                 }
1596                                 if (softc->periodic_read_error > 0) {
1597                                         if (++softc->periodic_read_count >=
1598                                             softc->periodic_read_error) {
1599                                                 softc->periodic_read_count = 0;
1600                                                 fail = 1;
1601                                         }
1602                                 }
1603                         } else {
1604                                 if (softc->force_write_error) {
1605                                         softc->force_write_error--;
1606                                         fail = 1;
1607                                 }
1608                         }
1609                         if (fail) {
1610                                 biofinish(bp, NULL, EIO);
1611                                 xpt_release_ccb(start_ccb);
1612                                 adaschedule(periph);
1613                                 return;
1614                         }
1615 #endif
1616                         KASSERT((bp->bio_flags & BIO_UNMAPPED) == 0 ||
1617                             round_page(bp->bio_bcount + bp->bio_ma_offset) /
1618                             PAGE_SIZE == bp->bio_ma_n,
1619                             ("Short bio %p", bp));
1620                         cam_fill_ataio(ataio,
1621                             ada_retry_count,
1622                             adadone,
1623                             (bp->bio_cmd == BIO_READ ? CAM_DIR_IN :
1624                                 CAM_DIR_OUT) | ((bp->bio_flags & BIO_UNMAPPED)
1625                                 != 0 ? CAM_DATA_BIO : 0),
1626                             tag_code,
1627                             ((bp->bio_flags & BIO_UNMAPPED) != 0) ? (void *)bp :
1628                                 bp->bio_data,
1629                             bp->bio_bcount,
1630                             ada_default_timeout*1000);
1631
1632                         if ((softc->flags & ADA_FLAG_CAN_NCQ) && tag_code) {
1633                                 if (bp->bio_cmd == BIO_READ) {
1634                                         ata_ncq_cmd(ataio, ATA_READ_FPDMA_QUEUED,
1635                                             lba, count);
1636                                 } else {
1637                                         ata_ncq_cmd(ataio, ATA_WRITE_FPDMA_QUEUED,
1638                                             lba, count);
1639                                 }
1640                         } else if ((softc->flags & ADA_FLAG_CAN_48BIT) &&
1641                             (lba + count >= ATA_MAX_28BIT_LBA ||
1642                             count > 256)) {
1643                                 if (softc->flags & ADA_FLAG_CAN_DMA48) {
1644                                         if (bp->bio_cmd == BIO_READ) {
1645                                                 ata_48bit_cmd(ataio, ATA_READ_DMA48,
1646                                                     0, lba, count);
1647                                         } else {
1648                                                 ata_48bit_cmd(ataio, ATA_WRITE_DMA48,
1649                                                     0, lba, count);
1650                                         }
1651                                 } else {
1652                                         if (bp->bio_cmd == BIO_READ) {
1653                                                 ata_48bit_cmd(ataio, ATA_READ_MUL48,
1654                                                     0, lba, count);
1655                                         } else {
1656                                                 ata_48bit_cmd(ataio, ATA_WRITE_MUL48,
1657                                                     0, lba, count);
1658                                         }
1659                                 }
1660                         } else {
1661                                 if (count == 256)
1662                                         count = 0;
1663                                 if (softc->flags & ADA_FLAG_CAN_DMA) {
1664                                         if (bp->bio_cmd == BIO_READ) {
1665                                                 ata_28bit_cmd(ataio, ATA_READ_DMA,
1666                                                     0, lba, count);
1667                                         } else {
1668                                                 ata_28bit_cmd(ataio, ATA_WRITE_DMA,
1669                                                     0, lba, count);
1670                                         }
1671                                 } else {
1672                                         if (bp->bio_cmd == BIO_READ) {
1673                                                 ata_28bit_cmd(ataio, ATA_READ_MUL,
1674                                                     0, lba, count);
1675                                         } else {
1676                                                 ata_28bit_cmd(ataio, ATA_WRITE_MUL,
1677                                                     0, lba, count);
1678                                         }
1679                                 }
1680                         }
1681                         break;
1682                 }
1683                 case BIO_FLUSH:
1684                         cam_fill_ataio(ataio,
1685                             1,
1686                             adadone,
1687                             CAM_DIR_NONE,
1688                             0,
1689                             NULL,
1690                             0,
1691                             ada_default_timeout*1000);
1692
1693                         if (softc->flags & ADA_FLAG_CAN_48BIT)
1694                                 ata_48bit_cmd(ataio, ATA_FLUSHCACHE48, 0, 0, 0);
1695                         else
1696                                 ata_28bit_cmd(ataio, ATA_FLUSHCACHE, 0, 0, 0);
1697                         break;
1698                 }
1699                 start_ccb->ccb_h.ccb_state = ADA_CCB_BUFFER_IO;
1700                 start_ccb->ccb_h.flags |= CAM_UNLOCKED;
1701 out:
1702                 start_ccb->ccb_h.ccb_bp = bp;
1703                 softc->outstanding_cmds++;
1704                 softc->refcount++;
1705                 cam_periph_unlock(periph);
1706                 xpt_action(start_ccb);
1707                 cam_periph_lock(periph);
1708                 softc->refcount--;
1709
1710                 /* May have more work to do, so ensure we stay scheduled */
1711                 adaschedule(periph);
1712                 break;
1713         }
1714         case ADA_STATE_RAHEAD:
1715         case ADA_STATE_WCACHE:
1716         {
1717                 cam_fill_ataio(ataio,
1718                     1,
1719                     adadone,
1720                     CAM_DIR_NONE,
1721                     0,
1722                     NULL,
1723                     0,
1724                     ada_default_timeout*1000);
1725
1726                 if (softc->state == ADA_STATE_RAHEAD) {
1727                         ata_28bit_cmd(ataio, ATA_SETFEATURES, ADA_RA ?
1728                             ATA_SF_ENAB_RCACHE : ATA_SF_DIS_RCACHE, 0, 0);
1729                         start_ccb->ccb_h.ccb_state = ADA_CCB_RAHEAD;
1730                 } else {
1731                         ata_28bit_cmd(ataio, ATA_SETFEATURES, ADA_WC ?
1732                             ATA_SF_ENAB_WCACHE : ATA_SF_DIS_WCACHE, 0, 0);
1733                         start_ccb->ccb_h.ccb_state = ADA_CCB_WCACHE;
1734                 }
1735                 start_ccb->ccb_h.flags |= CAM_DEV_QFREEZE;
1736                 xpt_action(start_ccb);
1737                 break;
1738         }
1739         }
1740 }
1741
1742 static void
1743 adadone(struct cam_periph *periph, union ccb *done_ccb)
1744 {
1745         struct ada_softc *softc;
1746         struct ccb_ataio *ataio;
1747         struct ccb_getdev *cgd;
1748         struct cam_path *path;
1749         int state;
1750
1751         softc = (struct ada_softc *)periph->softc;
1752         ataio = &done_ccb->ataio;
1753         path = done_ccb->ccb_h.path;
1754
1755         CAM_DEBUG(path, CAM_DEBUG_TRACE, ("adadone\n"));
1756
1757         state = ataio->ccb_h.ccb_state & ADA_CCB_TYPE_MASK;
1758         switch (state) {
1759         case ADA_CCB_BUFFER_IO:
1760         case ADA_CCB_TRIM:
1761         {
1762                 struct bio *bp;
1763                 int error;
1764
1765                 cam_periph_lock(periph);
1766                 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1767                         error = adaerror(done_ccb, 0, 0);
1768                         if (error == ERESTART) {
1769                                 /* A retry was scheduled, so just return. */
1770                                 cam_periph_unlock(periph);
1771                                 return;
1772                         }
1773                         if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
1774                                 cam_release_devq(path,
1775                                                  /*relsim_flags*/0,
1776                                                  /*reduction*/0,
1777                                                  /*timeout*/0,
1778                                                  /*getcount_only*/0);
1779                 } else {
1780                         if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
1781                                 panic("REQ_CMP with QFRZN");
1782                         error = 0;
1783                 }
1784                 bp = (struct bio *)done_ccb->ccb_h.ccb_bp;
1785                 bp->bio_error = error;
1786                 if (error != 0) {
1787                         bp->bio_resid = bp->bio_bcount;
1788                         bp->bio_flags |= BIO_ERROR;
1789                 } else {
1790                         if (state == ADA_CCB_TRIM)
1791                                 bp->bio_resid = 0;
1792                         else
1793                                 bp->bio_resid = ataio->resid;
1794                         if (bp->bio_resid > 0)
1795                                 bp->bio_flags |= BIO_ERROR;
1796                 }
1797                 softc->outstanding_cmds--;
1798                 if (softc->outstanding_cmds == 0)
1799                         softc->flags |= ADA_FLAG_WAS_OTAG;
1800                 xpt_release_ccb(done_ccb);
1801                 if (state == ADA_CCB_TRIM) {
1802                         TAILQ_HEAD(, bio) queue;
1803                         struct bio *bp1;
1804
1805                         TAILQ_INIT(&queue);
1806                         TAILQ_CONCAT(&queue, &softc->trim_req.bps, bio_queue);
1807                         /*
1808                          * Normally, the xpt_release_ccb() above would make sure
1809                          * that when we have more work to do, that work would
1810                          * get kicked off. However, we specifically keep
1811                          * trim_running set to 0 before the call above to allow
1812                          * other I/O to progress when many BIO_DELETE requests
1813                          * are pushed down. We set trim_running to 0 and call
1814                          * daschedule again so that we don't stall if there are
1815                          * no other I/Os pending apart from BIO_DELETEs.
1816                          */
1817                         softc->trim_running = 0;
1818                         adaschedule(periph);
1819                         cam_periph_unlock(periph);
1820                         while ((bp1 = TAILQ_FIRST(&queue)) != NULL) {
1821                                 TAILQ_REMOVE(&queue, bp1, bio_queue);
1822                                 bp1->bio_error = error;
1823                                 if (error != 0) {
1824                                         bp1->bio_flags |= BIO_ERROR;
1825                                         bp1->bio_resid = bp1->bio_bcount;
1826                                 } else
1827                                         bp1->bio_resid = 0;
1828                                 biodone(bp1);
1829                         }
1830                 } else {
1831                         cam_periph_unlock(periph);
1832                         biodone(bp);
1833                 }
1834                 return;
1835         }
1836         case ADA_CCB_RAHEAD:
1837         {
1838                 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1839                         if (adaerror(done_ccb, 0, 0) == ERESTART) {
1840 out:
1841                                 /* Drop freeze taken due to CAM_DEV_QFREEZE */
1842                                 cam_release_devq(path, 0, 0, 0, FALSE);
1843                                 return;
1844                         } else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
1845                                 cam_release_devq(path,
1846                                     /*relsim_flags*/0,
1847                                     /*reduction*/0,
1848                                     /*timeout*/0,
1849                                     /*getcount_only*/0);
1850                         }
1851                 }
1852
1853                 /*
1854                  * Since our peripheral may be invalidated by an error
1855                  * above or an external event, we must release our CCB
1856                  * before releasing the reference on the peripheral.
1857                  * The peripheral will only go away once the last reference
1858                  * is removed, and we need it around for the CCB release
1859                  * operation.
1860                  */
1861                 cgd = (struct ccb_getdev *)done_ccb;
1862                 xpt_setup_ccb(&cgd->ccb_h, path, CAM_PRIORITY_NORMAL);
1863                 cgd->ccb_h.func_code = XPT_GDEV_TYPE;
1864                 xpt_action((union ccb *)cgd);
1865                 if (ADA_WC >= 0 &&
1866                     cgd->ident_data.support.command1 & ATA_SUPPORT_WRITECACHE) {
1867                         softc->state = ADA_STATE_WCACHE;
1868                         xpt_release_ccb(done_ccb);
1869                         xpt_schedule(periph, CAM_PRIORITY_DEV);
1870                         goto out;
1871                 }
1872                 softc->state = ADA_STATE_NORMAL;
1873                 xpt_release_ccb(done_ccb);
1874                 /* Drop freeze taken due to CAM_DEV_QFREEZE */
1875                 cam_release_devq(path, 0, 0, 0, FALSE);
1876                 adaschedule(periph);
1877                 cam_periph_release_locked(periph);
1878                 return;
1879         }
1880         case ADA_CCB_WCACHE:
1881         {
1882                 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1883                         if (adaerror(done_ccb, 0, 0) == ERESTART) {
1884                                 goto out;
1885                         } else if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) {
1886                                 cam_release_devq(path,
1887                                     /*relsim_flags*/0,
1888                                     /*reduction*/0,
1889                                     /*timeout*/0,
1890                                     /*getcount_only*/0);
1891                         }
1892                 }
1893
1894                 softc->state = ADA_STATE_NORMAL;
1895                 /*
1896                  * Since our peripheral may be invalidated by an error
1897                  * above or an external event, we must release our CCB
1898                  * before releasing the reference on the peripheral.
1899                  * The peripheral will only go away once the last reference
1900                  * is removed, and we need it around for the CCB release
1901                  * operation.
1902                  */
1903                 xpt_release_ccb(done_ccb);
1904                 /* Drop freeze taken due to CAM_DEV_QFREEZE */
1905                 cam_release_devq(path, 0, 0, 0, FALSE);
1906                 adaschedule(periph);
1907                 cam_periph_release_locked(periph);
1908                 return;
1909         }
1910         case ADA_CCB_DUMP:
1911                 /* No-op.  We're polling */
1912                 return;
1913         default:
1914                 break;
1915         }
1916         xpt_release_ccb(done_ccb);
1917 }
1918
1919 static int
1920 adaerror(union ccb *ccb, u_int32_t cam_flags, u_int32_t sense_flags)
1921 {
1922
1923         return(cam_periph_error(ccb, cam_flags, sense_flags, NULL));
1924 }
1925
1926 static void
1927 adagetparams(struct cam_periph *periph, struct ccb_getdev *cgd)
1928 {
1929         struct ada_softc *softc = (struct ada_softc *)periph->softc;
1930         struct disk_params *dp = &softc->params;
1931         u_int64_t lbasize48;
1932         u_int32_t lbasize;
1933
1934         dp->secsize = ata_logical_sector_size(&cgd->ident_data);
1935         if ((cgd->ident_data.atavalid & ATA_FLAG_54_58) &&
1936                 cgd->ident_data.current_heads && cgd->ident_data.current_sectors) {
1937                 dp->heads = cgd->ident_data.current_heads;
1938                 dp->secs_per_track = cgd->ident_data.current_sectors;
1939                 dp->cylinders = cgd->ident_data.cylinders;
1940                 dp->sectors = (u_int32_t)cgd->ident_data.current_size_1 |
1941                           ((u_int32_t)cgd->ident_data.current_size_2 << 16);
1942         } else {
1943                 dp->heads = cgd->ident_data.heads;
1944                 dp->secs_per_track = cgd->ident_data.sectors;
1945                 dp->cylinders = cgd->ident_data.cylinders;
1946                 dp->sectors = cgd->ident_data.cylinders * dp->heads * dp->secs_per_track;
1947         }
1948         lbasize = (u_int32_t)cgd->ident_data.lba_size_1 |
1949                   ((u_int32_t)cgd->ident_data.lba_size_2 << 16);
1950
1951         /* use the 28bit LBA size if valid or bigger than the CHS mapping */
1952         if (cgd->ident_data.cylinders == 16383 || dp->sectors < lbasize)
1953                 dp->sectors = lbasize;
1954
1955         /* use the 48bit LBA size if valid */
1956         lbasize48 = ((u_int64_t)cgd->ident_data.lba_size48_1) |
1957                     ((u_int64_t)cgd->ident_data.lba_size48_2 << 16) |
1958                     ((u_int64_t)cgd->ident_data.lba_size48_3 << 32) |
1959                     ((u_int64_t)cgd->ident_data.lba_size48_4 << 48);
1960         if ((cgd->ident_data.support.command2 & ATA_SUPPORT_ADDRESS48) &&
1961             lbasize48 > ATA_MAX_28BIT_LBA)
1962                 dp->sectors = lbasize48;
1963 }
1964
1965 static void
1966 adasendorderedtag(void *arg)
1967 {
1968         struct ada_softc *softc = arg;
1969
1970         if (ada_send_ordered) {
1971                 if (softc->outstanding_cmds > 0) {
1972                         if ((softc->flags & ADA_FLAG_WAS_OTAG) == 0)
1973                                 softc->flags |= ADA_FLAG_NEED_OTAG;
1974                         softc->flags &= ~ADA_FLAG_WAS_OTAG;
1975                 }
1976         }
1977         /* Queue us up again */
1978         callout_reset(&softc->sendordered_c,
1979             (ada_default_timeout * hz) / ADA_ORDEREDTAG_INTERVAL,
1980             adasendorderedtag, softc);
1981 }
1982
1983 /*
1984  * Step through all ADA peripheral drivers, and if the device is still open,
1985  * sync the disk cache to physical media.
1986  */
1987 static void
1988 adaflush(void)
1989 {
1990         struct cam_periph *periph;
1991         struct ada_softc *softc;
1992         union ccb *ccb;
1993         int error;
1994
1995         CAM_PERIPH_FOREACH(periph, &adadriver) {
1996                 softc = (struct ada_softc *)periph->softc;
1997                 if (SCHEDULER_STOPPED()) {
1998                         /* If we paniced with the lock held, do not recurse. */
1999                         if (!cam_periph_owned(periph) &&
2000                             (softc->flags & ADA_FLAG_OPEN)) {
2001                                 adadump(softc->disk, NULL, 0, 0, 0);
2002                         }
2003                         continue;
2004                 }
2005                 cam_periph_lock(periph);
2006                 /*
2007                  * We only sync the cache if the drive is still open, and
2008                  * if the drive is capable of it..
2009                  */
2010                 if (((softc->flags & ADA_FLAG_OPEN) == 0) ||
2011                     (softc->flags & ADA_FLAG_CAN_FLUSHCACHE) == 0) {
2012                         cam_periph_unlock(periph);
2013                         continue;
2014                 }
2015
2016                 ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL);
2017                 cam_fill_ataio(&ccb->ataio,
2018                                     0,
2019                                     adadone,
2020                                     CAM_DIR_NONE,
2021                                     0,
2022                                     NULL,
2023                                     0,
2024                                     ada_default_timeout*1000);
2025                 if (softc->flags & ADA_FLAG_CAN_48BIT)
2026                         ata_48bit_cmd(&ccb->ataio, ATA_FLUSHCACHE48, 0, 0, 0);
2027                 else
2028                         ata_28bit_cmd(&ccb->ataio, ATA_FLUSHCACHE, 0, 0, 0);
2029
2030                 error = cam_periph_runccb(ccb, adaerror, /*cam_flags*/0,
2031                     /*sense_flags*/ SF_NO_RECOVERY | SF_NO_RETRY,
2032                     softc->disk->d_devstat);
2033                 if (error != 0)
2034                         xpt_print(periph->path, "Synchronize cache failed\n");
2035                 xpt_release_ccb(ccb);
2036                 cam_periph_unlock(periph);
2037         }
2038 }
2039
2040 static void
2041 adaspindown(uint8_t cmd, int flags)
2042 {
2043         struct cam_periph *periph;
2044         struct ada_softc *softc;
2045         union ccb *ccb;
2046         int error;
2047
2048         CAM_PERIPH_FOREACH(periph, &adadriver) {
2049                 /* If we paniced with lock held - not recurse here. */
2050                 if (cam_periph_owned(periph))
2051                         continue;
2052                 cam_periph_lock(periph);
2053                 softc = (struct ada_softc *)periph->softc;
2054                 /*
2055                  * We only spin-down the drive if it is capable of it..
2056                  */
2057                 if ((softc->flags & ADA_FLAG_CAN_POWERMGT) == 0) {
2058                         cam_periph_unlock(periph);
2059                         continue;
2060                 }
2061
2062                 if (bootverbose)
2063                         xpt_print(periph->path, "spin-down\n");
2064
2065                 ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL);
2066                 cam_fill_ataio(&ccb->ataio,
2067                                     0,
2068                                     adadone,
2069                                     CAM_DIR_NONE | flags,
2070                                     0,
2071                                     NULL,
2072                                     0,
2073                                     ada_default_timeout*1000);
2074                 ata_28bit_cmd(&ccb->ataio, cmd, 0, 0, 0);
2075
2076                 error = cam_periph_runccb(ccb, adaerror, /*cam_flags*/0,
2077                     /*sense_flags*/ SF_NO_RECOVERY | SF_NO_RETRY,
2078                     softc->disk->d_devstat);
2079                 if (error != 0)
2080                         xpt_print(periph->path, "Spin-down disk failed\n");
2081                 xpt_release_ccb(ccb);
2082                 cam_periph_unlock(periph);
2083         }
2084 }
2085
2086 static void
2087 adashutdown(void *arg, int howto)
2088 {
2089
2090         adaflush();
2091         if (ada_spindown_shutdown != 0 &&
2092             (howto & (RB_HALT | RB_POWEROFF)) != 0)
2093                 adaspindown(ATA_STANDBY_IMMEDIATE, 0);
2094 }
2095
2096 static void
2097 adasuspend(void *arg)
2098 {
2099
2100         adaflush();
2101         if (ada_spindown_suspend != 0)
2102                 adaspindown(ATA_SLEEP, CAM_DEV_QFREEZE);
2103 }
2104
2105 static void
2106 adaresume(void *arg)
2107 {
2108         struct cam_periph *periph;
2109         struct ada_softc *softc;
2110
2111         if (ada_spindown_suspend == 0)
2112                 return;
2113
2114         CAM_PERIPH_FOREACH(periph, &adadriver) {
2115                 cam_periph_lock(periph);
2116                 softc = (struct ada_softc *)periph->softc;
2117                 /*
2118                  * We only spin-down the drive if it is capable of it..
2119                  */
2120                 if ((softc->flags & ADA_FLAG_CAN_POWERMGT) == 0) {
2121                         cam_periph_unlock(periph);
2122                         continue;
2123                 }
2124
2125                 if (bootverbose)
2126                         xpt_print(periph->path, "resume\n");
2127
2128                 /*
2129                  * Drop freeze taken due to CAM_DEV_QFREEZE flag set on
2130                  * sleep request.
2131                  */
2132                 cam_release_devq(periph->path,
2133                          /*relsim_flags*/0,
2134                          /*openings*/0,
2135                          /*timeout*/0,
2136                          /*getcount_only*/0);
2137
2138                 cam_periph_unlock(periph);
2139         }
2140 }
2141
2142 #endif /* _KERNEL */