sys/cam/scsi/scsi_da.c

   1 /*
   2  * Implementation of SCSI Direct Access Peripheral driver for CAM.
   3  *
   4  * Copyright (c) 1997 Justin T. Gibbs.
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions, and the following disclaimer,
  12  *    without modification, immediately at the beginning of the file.
  13  * 2. The name of the author may not be used to endorse or promote products
  14  *    derived from this software without specific prior written permission.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  19  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
  20  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  26  * SUCH DAMAGE.
  27  *
  28  * $FreeBSD$
  29  */
  30
  31 #ifdef _KERNEL
  32 #include "opt_hw_wdog.h"
  33 #endif /* _KERNEL */
  34
  35 #include <sys/param.h>
  36
  37 #ifdef _KERNEL
  38 #include <sys/systm.h>
  39 #include <sys/kernel.h>
  40 #include <sys/bio.h>
  41 #endif /* _KERNEL */
  42
  43 #include <sys/devicestat.h>
  44 #include <sys/conf.h>
  45 #include <sys/disk.h>
  46 #include <sys/eventhandler.h>
  47 #include <sys/malloc.h>
  48 #include <sys/cons.h>
  49
  50 #include <machine/md_var.h>
  51
  52 #include <vm/vm.h>
  53 #include <vm/pmap.h>
  54
  55 #ifndef _KERNEL
  56 #include <stdio.h>
  57 #include <string.h>
  58 #endif /* _KERNEL */
  59
  60 #include <cam/cam.h>
  61 #include <cam/cam_ccb.h>
  62 #include <cam/cam_extend.h>
  63 #include <cam/cam_periph.h>
  64 #include <cam/cam_xpt_periph.h>
  65
  66 #include <cam/scsi/scsi_message.h>
  67
  68 #ifndef _KERNEL
  69 #include <cam/scsi/scsi_da.h>
  70 #endif /* !_KERNEL */
  71
  72 #ifdef _KERNEL
  73 typedef enum {
  74         DA_STATE_PROBE,
  75         DA_STATE_NORMAL
  76 } da_state;
  77
  78 typedef enum {
  79         DA_FLAG_PACK_INVALID    = 0x001,
  80         DA_FLAG_NEW_PACK        = 0x002,
  81         DA_FLAG_PACK_LOCKED     = 0x004,
  82         DA_FLAG_PACK_REMOVABLE  = 0x008,
  83         DA_FLAG_TAGGED_QUEUING  = 0x010,
  84         DA_FLAG_NEED_OTAG       = 0x020,
  85         DA_FLAG_WENT_IDLE       = 0x040,
  86         DA_FLAG_RETRY_UA        = 0x080,
  87         DA_FLAG_OPEN            = 0x100
  88 } da_flags;
  89
  90 typedef enum {
  91         DA_Q_NONE               = 0x00,
  92         DA_Q_NO_SYNC_CACHE      = 0x01,
  93         DA_Q_NO_6_BYTE          = 0x02
  94 } da_quirks;
  95
  96 typedef enum {
  97         DA_CCB_PROBE            = 0x01,
  98         DA_CCB_BUFFER_IO        = 0x02,
  99         DA_CCB_WAITING          = 0x03,
 100         DA_CCB_DUMP             = 0x04,
 101         DA_CCB_TYPE_MASK        = 0x0F,
 102         DA_CCB_RETRY_UA         = 0x10
 103 } da_ccb_state;
 104
 105 /* Offsets into our private area for storing information */
 106 #define ccb_state       ppriv_field0
 107 #define ccb_bp          ppriv_ptr1
 108
 109 struct disk_params {
 110         u_int8_t  heads;
 111         u_int16_t cylinders;
 112         u_int8_t  secs_per_track;
 113         u_int32_t secsize;      /* Number of bytes/sector */
 114         u_int32_t sectors;      /* total number sectors */
 115 };
 116
 117 struct da_softc {
 118         struct   bio_queue_head bio_queue;
 119         struct   devstat device_stats;
 120         SLIST_ENTRY(da_softc) links;
 121         LIST_HEAD(, ccb_hdr) pending_ccbs;
 122         da_state state;
 123         da_flags flags;
 124         da_quirks quirks;
 125         int      minimum_cmd_size;
 126         int      ordered_tag_count;
 127         struct   disk_params params;
 128         struct   disk disk;
 129         union    ccb saved_ccb;
 130         dev_t    dev;
 131 };
 132
 133 struct da_quirk_entry {
 134         struct scsi_inquiry_pattern inq_pat;
 135         da_quirks quirks;
 136 };
 137
 138 static const char quantum[] = "QUANTUM";
 139 static const char microp[] = "MICROP";
 140
 141 static struct da_quirk_entry da_quirk_table[] =
 142 {
 143         {
 144                 /*
 145                  * This particular Fujitsu drive doesn't like the
 146                  * synchronize cache command.
 147                  * Reported by: Tom Jackson <toj@gorilla.net>
 148                  */
 149                 {T_DIRECT, SIP_MEDIA_FIXED, "FUJITSU", "M2954*", "*"},
 150                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 151
 152         },
 153         {
 154                 /*
 155                  * This drive doesn't like the synchronize cache command
 156                  * either.  Reported by: Matthew Jacob <mjacob@feral.com>
 157                  * in NetBSD PR kern/6027, August 24, 1998.
 158                  */
 159                 {T_DIRECT, SIP_MEDIA_FIXED, microp, "2217*", "*"},
 160                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 161         },
 162         {
 163                 /*
 164                  * This drive doesn't like the synchronize cache command
 165                  * either.  Reported by: Hellmuth Michaelis (hm@kts.org)
 166                  * (PR 8882).
 167                  */
 168                 {T_DIRECT, SIP_MEDIA_FIXED, microp, "2112*", "*"},
 169                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 170         },
 171         {
 172                 /*
 173                  * Doesn't like the synchronize cache command.
 174                  * Reported by: Blaz Zupan <blaz@gold.amis.net>
 175                  */
 176                 {T_DIRECT, SIP_MEDIA_FIXED, "NEC", "D3847*", "*"},
 177                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 178         },
 179         {
 180                 /*
 181                  * Doesn't like the synchronize cache command.
 182                  */
 183                 {T_DIRECT, SIP_MEDIA_FIXED, quantum, "MAVERICK 540S", "*"},
 184                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 185         },
 186         {
 187                 /*
 188                  * Doesn't like the synchronize cache command.
 189                  */
 190                 {T_DIRECT, SIP_MEDIA_FIXED, quantum, "LPS525S", "*"},
 191                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 192         },
 193         {
 194                 /*
 195                  * Doesn't work correctly with 6 byte reads/writes.
 196                  * Returns illegal request, and points to byte 9 of the
 197                  * 6-byte CDB.
 198                  * Reported by:  Adam McDougall <bsdx@spawnet.com>
 199                  */
 200                 {T_DIRECT, SIP_MEDIA_FIXED, quantum, "VIKING 4*", "*"},
 201                 /*quirks*/ DA_Q_NO_6_BYTE
 202         },
 203         {
 204                 /*
 205                  * See above.
 206                  */
 207                 {T_DIRECT, SIP_MEDIA_FIXED, quantum, "VIKING 2*", "*"},
 208                 /*quirks*/ DA_Q_NO_6_BYTE
 209         },
 210
 211         /* Below a list of quirks for USB devices supported by umass. */
 212         {
 213                 /*
 214                  * This USB floppy drive uses the UFI command set. This
 215                  * command set is a derivative of the ATAPI command set and
 216                  * does not support READ_6 commands only READ_10. It also does
 217                  * not support sync cache (0x35).
 218                  */
 219                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Y-E DATA", "USB-FDU", "*"},
 220                 /*quirks*/ DA_Q_NO_6_BYTE|DA_Q_NO_SYNC_CACHE
 221         },
 222         {
 223                 /* Another USB floppy */
 224                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "MATSHITA", "FDD CF-VFDU*","*"},
 225                 /*quirks*/ DA_Q_NO_6_BYTE|DA_Q_NO_SYNC_CACHE
 226         },
 227         {
 228                 /*
 229                  * Sony Memory Stick adapter MSAC-US1,
 230                  * does not support READ_6 commands only READ_10. It also does
 231                  * not support sync cache (0x35).
 232                  * Sony PCG-C1VJ Internal Memory Stick Slot (MSC-U01) also
 233                  * has this quirk.  Make all sony MS* products use this
 234                  * quirk.  Reported by: TERAMOTO Masahiro
 235                  * <teramoto@comm.eng.osaka-u.ac.jp> (PR 23378).
 236                  */
 237                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Sony", "MS*", "*"},
 238                 /*quirks*/ DA_Q_NO_6_BYTE|DA_Q_NO_SYNC_CACHE
 239         },
 240         {
 241                 /*
 242                  * Sony DSC cameras (DSC-S30, DSC-S50, DSC-S70)
 243                  * do not support READ_6 commands, only READ_10.
 244                  */
 245                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Sony", "Sony DSC", "*"},
 246                 /*quirks*/ DA_Q_NO_6_BYTE|DA_Q_NO_SYNC_CACHE
 247         },
 248         {
 249                 {T_OPTICAL, SIP_MEDIA_REMOVABLE, "FUJITSU", "MCF3064AP", "*"},
 250                 /*quirks*/ DA_Q_NO_6_BYTE
 251         }
 252 };
 253
 254 static  d_open_t        daopen;
 255 static  d_close_t       daclose;
 256 static  d_strategy_t    dastrategy;
 257 static  d_ioctl_t       daioctl;
 258 static  d_dump_t        dadump;
 259 static  periph_init_t   dainit;
 260 static  void            daasync(void *callback_arg, u_int32_t code,
 261                                 struct cam_path *path, void *arg);
 262 static  periph_ctor_t   daregister;
 263 static  periph_dtor_t   dacleanup;
 264 static  periph_start_t  dastart;
 265 static  periph_oninv_t  daoninvalidate;
 266 static  void            dadone(struct cam_periph *periph,
 267                                union ccb *done_ccb);
 268 static  int             daerror(union ccb *ccb, u_int32_t cam_flags,
 269                                 u_int32_t sense_flags);
 270 static void             daprevent(struct cam_periph *periph, int action);
 271 static void             dasetgeom(struct cam_periph *periph,
 272                                   struct scsi_read_capacity_data * rdcap);
 273 static timeout_t        dasendorderedtag;
 274 static void             dashutdown(void *arg, int howto);
 275
 276 #ifndef DA_DEFAULT_TIMEOUT
 277 #define DA_DEFAULT_TIMEOUT 60   /* Timeout in seconds */
 278 #endif
 279
 280 /*
 281  * DA_ORDEREDTAG_INTERVAL determines how often, relative
 282  * to the default timeout, we check to see whether an ordered
 283  * tagged transaction is appropriate to prevent simple tag
 284  * starvation.  Since we'd like to ensure that there is at least
 285  * 1/2 of the timeout length left for a starved transaction to
 286  * complete after we've sent an ordered tag, we must poll at least
 287  * four times in every timeout period.  This takes care of the worst
 288  * case where a starved transaction starts during an interval that
 289  * meets the requirement "don't send an ordered tag" test so it takes
 290  * us two intervals to determine that a tag must be sent.
 291  */
 292 #ifndef DA_ORDEREDTAG_INTERVAL
 293 #define DA_ORDEREDTAG_INTERVAL 4
 294 #endif
 295
 296 static struct periph_driver dadriver =
 297 {
 298         dainit, "da",
 299         TAILQ_HEAD_INITIALIZER(dadriver.units), /* generation */ 0
 300 };
 301
 302 PERIPHDRIVER_DECLARE(da, dadriver);
 303
 304 #define DA_CDEV_MAJOR 13
 305
 306 /* For 2.2-stable support */
 307 #ifndef D_DISK
 308 #define D_DISK 0
 309 #endif
 310
 311 static struct cdevsw da_cdevsw = {
 312         /* open */      daopen,
 313         /* close */     daclose,
 314         /* read */      physread,
 315         /* write */     physwrite,
 316         /* ioctl */     daioctl,
 317         /* poll */      nopoll,
 318         /* mmap */      nommap,
 319         /* strategy */  dastrategy,
 320         /* name */      "da",
 321         /* maj */       DA_CDEV_MAJOR,
 322         /* dump */      dadump,
 323         /* psize */     nopsize,
 324         /* flags */     D_DISK,
 325 };
 326
 327 static struct cdevsw dadisk_cdevsw;
 328
 329 static SLIST_HEAD(,da_softc) softc_list;
 330 static struct extend_array *daperiphs;
 331
 332 static int
 333 daopen(dev_t dev, int flags, int fmt, struct proc *p)
 334 {
 335         struct cam_periph *periph;
 336         struct da_softc *softc;
 337         struct disklabel *label;
 338         struct scsi_read_capacity_data *rcap;
 339         union  ccb *ccb;
 340         int unit;
 341         int part;
 342         int error;
 343         int s;
 344
 345         unit = dkunit(dev);
 346         part = dkpart(dev);
 347         s = splsoftcam();
 348         periph = cam_extend_get(daperiphs, unit);
 349         if (periph == NULL) {
 350                 splx(s);
 351                 return (ENXIO);
 352         }
 353
 354         softc = (struct da_softc *)periph->softc;
 355
 356         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE,
 357             ("daopen: dev=%s (unit %d , partition %d)\n", devtoname(dev),
 358              unit, part));
 359
 360         if ((error = cam_periph_lock(periph, PRIBIO|PCATCH)) != 0)
 361                 return (error); /* error code from tsleep */
 362
 363         if (cam_periph_acquire(periph) != CAM_REQ_CMP)
 364                 return(ENXIO);
 365         softc->flags |= DA_FLAG_OPEN;
 366
 367         if ((softc->flags & DA_FLAG_PACK_INVALID) != 0) {
 368                 /* Invalidate our pack information. */
 369                 disk_invalidate(&softc->disk);
 370                 softc->flags &= ~DA_FLAG_PACK_INVALID;
 371         }
 372         splx(s);
 373
 374         /* Do a read capacity */
 375         rcap = (struct scsi_read_capacity_data *)malloc(sizeof(*rcap),
 376                                                         M_TEMP,
 377                                                         M_WAITOK);
 378
 379         ccb = cam_periph_getccb(periph, /*priority*/1);
 380         scsi_read_capacity(&ccb->csio,
 381                            /*retries*/4,
 382                            /*cbfncp*/dadone,
 383                            MSG_SIMPLE_Q_TAG,
 384                            rcap,
 385                            SSD_FULL_SIZE,
 386                            /*timeout*/60000);
 387         ccb->ccb_h.ccb_bp = NULL;
 388
 389         error = cam_periph_runccb(ccb, daerror,
 390                                   /*cam_flags*/CAM_RETRY_SELTO,
 391                                   /*sense_flags*/SF_RETRY_UA,
 392                                   &softc->device_stats);
 393
 394         if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
 395                 cam_release_devq(ccb->ccb_h.path,
 396                                  /*relsim_flags*/0,
 397                                  /*reduction*/0,
 398                                  /*timeout*/0,
 399                                  /*getcount_only*/0);
 400         xpt_release_ccb(ccb);
 401
 402         if (error == 0)
 403                 dasetgeom(periph, rcap);
 404
 405         free(rcap, M_TEMP);
 406
 407         if (error == 0) {
 408                 struct ccb_getdev cgd;
 409
 410                 /* Build label for whole disk. */
 411                 label = &softc->disk.d_label;
 412                 bzero(label, sizeof(*label));
 413                 label->d_type = DTYPE_SCSI;
 414
 415                 /*
 416                  * Grab the inquiry data to get the vendor and product names.
 417                  * Put them in the typename and packname for the label.
 418                  */
 419                 xpt_setup_ccb(&cgd.ccb_h, periph->path, /*priority*/ 1);
 420                 cgd.ccb_h.func_code = XPT_GDEV_TYPE;
 421                 xpt_action((union ccb *)&cgd);
 422
 423                 strncpy(label->d_typename, cgd.inq_data.vendor,
 424                         min(SID_VENDOR_SIZE, sizeof(label->d_typename)));
 425                 strncpy(label->d_packname, cgd.inq_data.product,
 426                         min(SID_PRODUCT_SIZE, sizeof(label->d_packname)));
 427
 428                 label->d_secsize = softc->params.secsize;
 429                 label->d_nsectors = softc->params.secs_per_track;
 430                 label->d_ntracks = softc->params.heads;
 431                 label->d_ncylinders = softc->params.cylinders;
 432                 label->d_secpercyl = softc->params.heads
 433                                   * softc->params.secs_per_track;
 434                 label->d_secperunit = softc->params.sectors;
 435
 436                 /*
 437                  * Check to see whether or not the blocksize is set yet.
 438                  * If it isn't, set it and then clear the blocksize
 439                  * unavailable flag for the device statistics.
 440                  */
 441                 if ((softc->device_stats.flags & DEVSTAT_BS_UNAVAILABLE) != 0){
 442                         softc->device_stats.block_size = softc->params.secsize;
 443                         softc->device_stats.flags &= ~DEVSTAT_BS_UNAVAILABLE;
 444                 }
 445         }
 446
 447         if (error == 0) {
 448                 if ((softc->flags & DA_FLAG_PACK_REMOVABLE) != 0)
 449                         daprevent(periph, PR_PREVENT);
 450         }
 451         cam_periph_unlock(periph);
 452         return (error);
 453 }
 454
 455 static int
 456 daclose(dev_t dev, int flag, int fmt, struct proc *p)
 457 {
 458         struct  cam_periph *periph;
 459         struct  da_softc *softc;
 460         int     unit;
 461         int     error;
 462
 463         unit = dkunit(dev);
 464         periph = cam_extend_get(daperiphs, unit);
 465         if (periph == NULL)
 466                 return (ENXIO);
 467
 468         softc = (struct da_softc *)periph->softc;
 469
 470         if ((error = cam_periph_lock(periph, PRIBIO)) != 0) {
 471                 return (error); /* error code from tsleep */
 472         }
 473
 474         if ((softc->quirks & DA_Q_NO_SYNC_CACHE) == 0) {
 475                 union   ccb *ccb;
 476
 477                 ccb = cam_periph_getccb(periph, /*priority*/1);
 478
 479                 scsi_synchronize_cache(&ccb->csio,
 480                                        /*retries*/1,
 481                                        /*cbfcnp*/dadone,
 482                                        MSG_SIMPLE_Q_TAG,
 483                                        /*begin_lba*/0,/* Cover the whole disk */
 484                                        /*lb_count*/0,
 485                                        SSD_FULL_SIZE,
 486                                        5 * 60 * 1000);
 487
 488                 cam_periph_runccb(ccb, /*error_routine*/NULL, /*cam_flags*/0,
 489                                   /*sense_flags*/SF_RETRY_UA,
 490                                   &softc->device_stats);
 491
 492                 if ((ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
 493                         if ((ccb->ccb_h.status & CAM_STATUS_MASK) ==
 494                              CAM_SCSI_STATUS_ERROR) {
 495                                 int asc, ascq;
 496                                 int sense_key, error_code;
 497
 498                                 scsi_extract_sense(&ccb->csio.sense_data,
 499                                                    &error_code,
 500                                                    &sense_key,
 501                                                    &asc, &ascq);
 502                                 if (sense_key != SSD_KEY_ILLEGAL_REQUEST)
 503                                         scsi_sense_print(&ccb->csio);
 504                         } else {
 505                                 xpt_print_path(periph->path);
 506                                 printf("Synchronize cache failed, status "
 507                                        "== 0x%x, scsi status == 0x%x\n",
 508                                        ccb->csio.ccb_h.status,
 509                                        ccb->csio.scsi_status);
 510                         }
 511                 }
 512
 513                 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
 514                         cam_release_devq(ccb->ccb_h.path,
 515                                          /*relsim_flags*/0,
 516                                          /*reduction*/0,
 517                                          /*timeout*/0,
 518                                          /*getcount_only*/0);
 519
 520                 xpt_release_ccb(ccb);
 521
 522         }
 523
 524         if ((softc->flags & DA_FLAG_PACK_REMOVABLE) != 0) {
 525                 daprevent(periph, PR_ALLOW);
 526                 /*
 527                  * If we've got removeable media, mark the blocksize as
 528                  * unavailable, since it could change when new media is
 529                  * inserted.
 530                  */
 531                 softc->device_stats.flags |= DEVSTAT_BS_UNAVAILABLE;
 532         }
 533
 534         softc->flags &= ~DA_FLAG_OPEN;
 535         cam_periph_unlock(periph);
 536         cam_periph_release(periph);
 537         return (0);
 538 }
 539
 540 /*
 541  * Actually translate the requested transfer into one the physical driver
 542  * can understand.  The transfer is described by a buf and will include
 543  * only one physical transfer.
 544  */
 545 static void
 546 dastrategy(struct bio *bp)
 547 {
 548         struct cam_periph *periph;
 549         struct da_softc *softc;
 550         u_int  unit;
 551         u_int  part;
 552         int    s;
 553
 554         unit = dkunit(bp->bio_dev);
 555         part = dkpart(bp->bio_dev);
 556         periph = cam_extend_get(daperiphs, unit);
 557         if (periph == NULL) {
 558                 bp->bio_error = ENXIO;
 559                 goto bad;
 560         }
 561         softc = (struct da_softc *)periph->softc;
 562 #if 0
 563         /*
 564          * check it's not too big a transfer for our adapter
 565          */
 566         scsi_minphys(bp,&sd_switch);
 567 #endif
 568
 569         /*
 570          * Mask interrupts so that the pack cannot be invalidated until
 571          * after we are in the queue.  Otherwise, we might not properly
 572          * clean up one of the buffers.
 573          */
 574         s = splbio();
 575
 576         /*
 577          * If the device has been made invalid, error out
 578          */
 579         if ((softc->flags & DA_FLAG_PACK_INVALID)) {
 580                 splx(s);
 581                 bp->bio_error = ENXIO;
 582                 goto bad;
 583         }
 584
 585         /*
 586          * Place it in the queue of disk activities for this disk
 587          */
 588         bioqdisksort(&softc->bio_queue, bp);
 589
 590         splx(s);
 591
 592         /*
 593          * Schedule ourselves for performing the work.
 594          */
 595         xpt_schedule(periph, /* XXX priority */1);
 596
 597         return;
 598 bad:
 599         bp->bio_flags |= BIO_ERROR;
 600
 601         /*
 602          * Correctly set the buf to indicate a completed xfer
 603          */
 604         bp->bio_resid = bp->bio_bcount;
 605         biodone(bp);
 606         return;
 607 }
 608
 609 /* For 2.2-stable support */
 610 #ifndef ENOIOCTL
 611 #define ENOIOCTL -1
 612 #endif
 613
 614 static int
 615 daioctl(dev_t dev, u_long cmd, caddr_t addr, int flag, struct proc *p)
 616 {
 617         struct cam_periph *periph;
 618         struct da_softc *softc;
 619         int unit;
 620         int error;
 621
 622         unit = dkunit(dev);
 623         periph = cam_extend_get(daperiphs, unit);
 624         if (periph == NULL)
 625                 return (ENXIO);
 626
 627         softc = (struct da_softc *)periph->softc;
 628
 629         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("daioctl\n"));
 630
 631         if ((error = cam_periph_lock(periph, PRIBIO|PCATCH)) != 0) {
 632                 return (error); /* error code from tsleep */
 633         }
 634
 635         error = cam_periph_ioctl(periph, cmd, addr, daerror);
 636
 637         cam_periph_unlock(periph);
 638
 639         return (error);
 640 }
 641
 642 static int
 643 dadump(dev_t dev)
 644 {
 645         struct      cam_periph *periph;
 646         struct      da_softc *softc;
 647         u_int       unit;
 648         u_int       part;
 649         u_int       secsize;
 650         u_int       num;        /* number of sectors to write */
 651         u_int       blknum;
 652         long        blkcnt;
 653         vm_offset_t addr;
 654         struct      ccb_scsiio csio;
 655         int         dumppages = MAXDUMPPGS;
 656         int         error;
 657         int         i;
 658
 659         /* toss any characters present prior to dump */
 660         while (cncheckc() != -1)
 661                 ;
 662
 663         unit = dkunit(dev);
 664         part = dkpart(dev);
 665         periph = cam_extend_get(daperiphs, unit);
 666         if (periph == NULL) {
 667                 return (ENXIO);
 668         }
 669         softc = (struct da_softc *)periph->softc;
 670
 671         if ((softc->flags & DA_FLAG_PACK_INVALID) != 0)
 672                 return (ENXIO);
 673
 674         error = disk_dumpcheck(dev, &num, &blknum, &secsize);
 675         if (error)
 676                 return (error);
 677
 678         addr = 0;       /* starting address */
 679         blkcnt = howmany(PAGE_SIZE, secsize);
 680
 681         while (num > 0) {
 682                 caddr_t va = NULL;
 683
 684                 if ((num / blkcnt) < dumppages)
 685                         dumppages = num / blkcnt;
 686
 687                 for (i = 0; i < dumppages; ++i) {
 688                         vm_offset_t a = addr + (i * PAGE_SIZE);
 689                         if (is_physical_memory(a))
 690                                 va = pmap_kenter_temporary(trunc_page(a), i);
 691                         else
 692                                 va = pmap_kenter_temporary(trunc_page(0), i);
 693                 }
 694
 695                 xpt_setup_ccb(&csio.ccb_h, periph->path, /*priority*/1);
 696                 csio.ccb_h.ccb_state = DA_CCB_DUMP;
 697                 scsi_read_write(&csio,
 698                                 /*retries*/1,
 699                                 dadone,
 700                                 MSG_ORDERED_Q_TAG,
 701                                 /*read*/FALSE,
 702                                 /*byte2*/0,
 703                                 /*minimum_cmd_size*/ softc->minimum_cmd_size,
 704                                 blknum,
 705                                 blkcnt * dumppages,
 706                                 /*data_ptr*/(u_int8_t *) va,
 707                                 /*dxfer_len*/blkcnt * secsize * dumppages,
 708                                 /*sense_len*/SSD_FULL_SIZE,
 709                                 DA_DEFAULT_TIMEOUT * 1000);
 710                 xpt_polled_action((union ccb *)&csio);
 711
 712                 if ((csio.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
 713                         printf("Aborting dump due to I/O error.\n");
 714                         if ((csio.ccb_h.status & CAM_STATUS_MASK) ==
 715                              CAM_SCSI_STATUS_ERROR)
 716                                 scsi_sense_print(&csio);
 717                         else
 718                                 printf("status == 0x%x, scsi status == 0x%x\n",
 719                                        csio.ccb_h.status, csio.scsi_status);
 720                         return(EIO);
 721                 }
 722
 723                 if (dumpstatus(addr, (long)(num * softc->params.secsize)) < 0)
 724                         return (EINTR);
 725
 726                 /* update block count */
 727                 num -= blkcnt * dumppages;
 728                 blknum += blkcnt * dumppages;
 729                 addr += PAGE_SIZE * dumppages;
 730         }
 731
 732         /*
 733          * Sync the disk cache contents to the physical media.
 734          */
 735         if ((softc->quirks & DA_Q_NO_SYNC_CACHE) == 0) {
 736
 737                 xpt_setup_ccb(&csio.ccb_h, periph->path, /*priority*/1);
 738                 csio.ccb_h.ccb_state = DA_CCB_DUMP;
 739                 scsi_synchronize_cache(&csio,
 740                                        /*retries*/1,
 741                                        /*cbfcnp*/dadone,
 742                                        MSG_SIMPLE_Q_TAG,
 743                                        /*begin_lba*/0,/* Cover the whole disk */
 744                                        /*lb_count*/0,
 745                                        SSD_FULL_SIZE,
 746                                        5 * 60 * 1000);
 747                 xpt_polled_action((union ccb *)&csio);
 748
 749                 if ((csio.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
 750                         if ((csio.ccb_h.status & CAM_STATUS_MASK) ==
 751                              CAM_SCSI_STATUS_ERROR) {
 752                                 int asc, ascq;
 753                                 int sense_key, error_code;
 754
 755                                 scsi_extract_sense(&csio.sense_data,
 756                                                    &error_code,
 757                                                    &sense_key,
 758                                                    &asc, &ascq);
 759                                 if (sense_key != SSD_KEY_ILLEGAL_REQUEST)
 760                                         scsi_sense_print(&csio);
 761                         } else {
 762                                 xpt_print_path(periph->path);
 763                                 printf("Synchronize cache failed, status "
 764                                        "== 0x%x, scsi status == 0x%x\n",
 765                                        csio.ccb_h.status, csio.scsi_status);
 766                         }
 767                 }
 768         }
 769         return (0);
 770 }
 771
 772 static void
 773 dainit(void)
 774 {
 775         cam_status status;
 776         struct cam_path *path;
 777
 778         /*
 779          * Create our extend array for storing the devices we attach to.
 780          */
 781         daperiphs = cam_extend_new();
 782         SLIST_INIT(&softc_list);
 783         if (daperiphs == NULL) {
 784                 printf("da: Failed to alloc extend array!\n");
 785                 return;
 786         }
 787
 788         /*
 789          * Install a global async callback.  This callback will
 790          * receive async callbacks like "new device found".
 791          */
 792         status = xpt_create_path(&path, /*periph*/NULL, CAM_XPT_PATH_ID,
 793                                  CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD);
 794
 795         if (status == CAM_REQ_CMP) {
 796                 struct ccb_setasync csa;
 797
 798                 xpt_setup_ccb(&csa.ccb_h, path, /*priority*/5);
 799                 csa.ccb_h.func_code = XPT_SASYNC_CB;
 800                 csa.event_enable = AC_FOUND_DEVICE;
 801                 csa.callback = daasync;
 802                 csa.callback_arg = NULL;
 803                 xpt_action((union ccb *)&csa);
 804                 status = csa.ccb_h.status;
 805                 xpt_free_path(path);
 806         }
 807
 808         if (status != CAM_REQ_CMP) {
 809                 printf("da: Failed to attach master async callback "
 810                        "due to status 0x%x!\n", status);
 811         } else {
 812
 813                 /*
 814                  * Schedule a periodic event to occasioanly send an
 815                  * ordered tag to a device.
 816                  */
 817                 timeout(dasendorderedtag, NULL,
 818                         (DA_DEFAULT_TIMEOUT * hz) / DA_ORDEREDTAG_INTERVAL);
 819
 820                 /* Register our shutdown event handler */
 821                 if ((EVENTHANDLER_REGISTER(shutdown_post_sync, dashutdown,
 822                                            NULL, SHUTDOWN_PRI_DEFAULT)) == NULL)
 823                     printf("dainit: shutdown event registration failed!\n");
 824         }
 825 }
 826
 827 static void
 828 daoninvalidate(struct cam_periph *periph)
 829 {
 830         int s;
 831         struct da_softc *softc;
 832         struct bio *q_bp;
 833         struct ccb_setasync csa;
 834
 835         softc = (struct da_softc *)periph->softc;
 836
 837         /*
 838          * De-register any async callbacks.
 839          */
 840         xpt_setup_ccb(&csa.ccb_h, periph->path,
 841                       /* priority */ 5);
 842         csa.ccb_h.func_code = XPT_SASYNC_CB;
 843         csa.event_enable = 0;
 844         csa.callback = daasync;
 845         csa.callback_arg = periph;
 846         xpt_action((union ccb *)&csa);
 847
 848         softc->flags |= DA_FLAG_PACK_INVALID;
 849
 850         /*
 851          * Although the oninvalidate() routines are always called at
 852          * splsoftcam, we need to be at splbio() here to keep the buffer
 853          * queue from being modified while we traverse it.
 854          */
 855         s = splbio();
 856
 857         /*
 858          * Return all queued I/O with ENXIO.
 859          * XXX Handle any transactions queued to the card
 860          *     with XPT_ABORT_CCB.
 861          */
 862         while ((q_bp = bioq_first(&softc->bio_queue)) != NULL){
 863                 bioq_remove(&softc->bio_queue, q_bp);
 864                 q_bp->bio_resid = q_bp->bio_bcount;
 865                 q_bp->bio_error = ENXIO;
 866                 q_bp->bio_flags |= BIO_ERROR;
 867                 biodone(q_bp);
 868         }
 869         splx(s);
 870
 871         SLIST_REMOVE(&softc_list, softc, da_softc, links);
 872
 873         xpt_print_path(periph->path);
 874         printf("lost device\n");
 875 }
 876
 877 static void
 878 dacleanup(struct cam_periph *periph)
 879 {
 880         struct da_softc *softc;
 881
 882         softc = (struct da_softc *)periph->softc;
 883
 884         devstat_remove_entry(&softc->device_stats);
 885         cam_extend_release(daperiphs, periph->unit_number);
 886         xpt_print_path(periph->path);
 887         printf("removing device entry\n");
 888         if (softc->dev) {
 889                 disk_destroy(softc->dev);
 890         }
 891         free(softc, M_DEVBUF);
 892 }
 893
 894 static void
 895 daasync(void *callback_arg, u_int32_t code,
 896         struct cam_path *path, void *arg)
 897 {
 898         struct cam_periph *periph;
 899
 900         periph = (struct cam_periph *)callback_arg;
 901         switch (code) {
 902         case AC_FOUND_DEVICE:
 903         {
 904                 struct ccb_getdev *cgd;
 905                 cam_status status;
 906
 907                 cgd = (struct ccb_getdev *)arg;
 908
 909                 if (SID_TYPE(&cgd->inq_data) != T_DIRECT
 910                     && SID_TYPE(&cgd->inq_data) != T_OPTICAL)
 911                         break;
 912
 913                 /*
 914                  * Allocate a peripheral instance for
 915                  * this device and start the probe
 916                  * process.
 917                  */
 918                 status = cam_periph_alloc(daregister, daoninvalidate,
 919                                           dacleanup, dastart,
 920                                           "da", CAM_PERIPH_BIO,
 921                                           cgd->ccb_h.path, daasync,
 922                                           AC_FOUND_DEVICE, cgd);
 923
 924                 if (status != CAM_REQ_CMP
 925                  && status != CAM_REQ_INPROG)
 926                         printf("daasync: Unable to attach to new device "
 927                                 "due to status 0x%x\n", status);
 928                 break;
 929         }
 930         case AC_SENT_BDR:
 931         case AC_BUS_RESET:
 932         {
 933                 struct da_softc *softc;
 934                 struct ccb_hdr *ccbh;
 935                 int s;
 936
 937                 softc = (struct da_softc *)periph->softc;
 938                 s = splsoftcam();
 939                 /*
 940                  * Don't fail on the expected unit attention
 941                  * that will occur.
 942                  */
 943                 softc->flags |= DA_FLAG_RETRY_UA;
 944                 LIST_FOREACH(ccbh, &softc->pending_ccbs, periph_links.le)
 945                         ccbh->ccb_state |= DA_CCB_RETRY_UA;
 946                 splx(s);
 947                 /* FALLTHROUGH*/
 948         }
 949         default:
 950                 cam_periph_async(periph, code, path, arg);
 951                 break;
 952         }
 953 }
 954
 955 static cam_status
 956 daregister(struct cam_periph *periph, void *arg)
 957 {
 958         int s;
 959         struct da_softc *softc;
 960         struct ccb_setasync csa;
 961         struct ccb_getdev *cgd;
 962         caddr_t match;
 963
 964         cgd = (struct ccb_getdev *)arg;
 965         if (periph == NULL) {
 966                 printf("daregister: periph was NULL!!\n");
 967                 return(CAM_REQ_CMP_ERR);
 968         }
 969
 970         if (cgd == NULL) {
 971                 printf("daregister: no getdev CCB, can't register device\n");
 972                 return(CAM_REQ_CMP_ERR);
 973         }
 974
 975         softc = (struct da_softc *)malloc(sizeof(*softc),M_DEVBUF,M_NOWAIT);
 976
 977         if (softc == NULL) {
 978                 printf("daregister: Unable to probe new device. "
 979                        "Unable to allocate softc\n");
 980                 return(CAM_REQ_CMP_ERR);
 981         }
 982
 983         bzero(softc, sizeof(*softc));
 984         LIST_INIT(&softc->pending_ccbs);
 985         softc->state = DA_STATE_PROBE;
 986         bioq_init(&softc->bio_queue);
 987         if (SID_IS_REMOVABLE(&cgd->inq_data))
 988                 softc->flags |= DA_FLAG_PACK_REMOVABLE;
 989         if ((cgd->inq_data.flags & SID_CmdQue) != 0)
 990                 softc->flags |= DA_FLAG_TAGGED_QUEUING;
 991
 992         periph->softc = softc;
 993
 994         cam_extend_set(daperiphs, periph->unit_number, periph);
 995
 996         /*
 997          * See if this device has any quirks.
 998          */
 999         match = cam_quirkmatch((caddr_t)&cgd->inq_data,
1000                                (caddr_t)da_quirk_table,
1001                                sizeof(da_quirk_table)/sizeof(*da_quirk_table),
1002                                sizeof(*da_quirk_table), scsi_inquiry_match);
1003
1004         if (match != NULL)
1005                 softc->quirks = ((struct da_quirk_entry *)match)->quirks;
1006         else
1007                 softc->quirks = DA_Q_NONE;
1008
1009         if (softc->quirks & DA_Q_NO_6_BYTE)
1010                 softc->minimum_cmd_size = 10;
1011         else
1012                 softc->minimum_cmd_size = 6;
1013
1014         /*
1015          * Block our timeout handler while we
1016          * add this softc to the dev list.
1017          */
1018         s = splsoftclock();
1019         SLIST_INSERT_HEAD(&softc_list, softc, links);
1020         splx(s);
1021
1022         /*
1023          * The DA driver supports a blocksize, but
1024          * we don't know the blocksize until we do
1025          * a read capacity.  So, set a flag to
1026          * indicate that the blocksize is
1027          * unavailable right now.  We'll clear the
1028          * flag as soon as we've done a read capacity.
1029          */
1030         devstat_add_entry(&softc->device_stats, "da",
1031                           periph->unit_number, 0,
1032                           DEVSTAT_BS_UNAVAILABLE,
1033                           SID_TYPE(&cgd->inq_data) | DEVSTAT_TYPE_IF_SCSI,
1034                           DEVSTAT_PRIORITY_DISK);
1035
1036         /*
1037          * Register this media as a disk
1038          */
1039         softc->dev = disk_create(periph->unit_number, &softc->disk, 0,
1040             &da_cdevsw, &dadisk_cdevsw);
1041
1042         /*
1043          * Add async callbacks for bus reset and
1044          * bus device reset calls.  I don't bother
1045          * checking if this fails as, in most cases,
1046          * the system will function just fine without
1047          * them and the only alternative would be to
1048          * not attach the device on failure.
1049          */
1050         xpt_setup_ccb(&csa.ccb_h, periph->path, /*priority*/5);
1051         csa.ccb_h.func_code = XPT_SASYNC_CB;
1052         csa.event_enable = AC_SENT_BDR | AC_BUS_RESET | AC_LOST_DEVICE;
1053         csa.callback = daasync;
1054         csa.callback_arg = periph;
1055         xpt_action((union ccb *)&csa);
1056         /*
1057          * Lock this peripheral until we are setup.
1058          * This first call can't block
1059          */
1060         (void)cam_periph_lock(periph, PRIBIO);
1061         xpt_schedule(periph, /*priority*/5);
1062
1063         return(CAM_REQ_CMP);
1064 }
1065
1066 static void
1067 dastart(struct cam_periph *periph, union ccb *start_ccb)
1068 {
1069         struct da_softc *softc;
1070
1071         softc = (struct da_softc *)periph->softc;
1072
1073
1074         switch (softc->state) {
1075         case DA_STATE_NORMAL:
1076         {
1077                 /* Pull a buffer from the queue and get going on it */
1078                 struct bio *bp;
1079                 int s;
1080
1081                 /*
1082                  * See if there is a buf with work for us to do..
1083                  */
1084                 s = splbio();
1085                 bp = bioq_first(&softc->bio_queue);
1086                 if (periph->immediate_priority <= periph->pinfo.priority) {
1087                         CAM_DEBUG_PRINT(CAM_DEBUG_SUBTRACE,
1088                                         ("queuing for immediate ccb\n"));
1089                         start_ccb->ccb_h.ccb_state = DA_CCB_WAITING;
1090                         SLIST_INSERT_HEAD(&periph->ccb_list, &start_ccb->ccb_h,
1091                                           periph_links.sle);
1092                         periph->immediate_priority = CAM_PRIORITY_NONE;
1093                         splx(s);
1094                         wakeup(&periph->ccb_list);
1095                 } else if (bp == NULL) {
1096                         splx(s);
1097                         xpt_release_ccb(start_ccb);
1098                 } else {
1099                         int oldspl;
1100                         u_int8_t tag_code;
1101
1102                         bioq_remove(&softc->bio_queue, bp);
1103
1104                         devstat_start_transaction(&softc->device_stats);
1105
1106                         if ((bp->bio_flags & BIO_ORDERED) != 0
1107                          || (softc->flags & DA_FLAG_NEED_OTAG) != 0) {
1108                                 softc->flags &= ~DA_FLAG_NEED_OTAG;
1109                                 softc->ordered_tag_count++;
1110                                 tag_code = MSG_ORDERED_Q_TAG;
1111                         } else {
1112                                 tag_code = MSG_SIMPLE_Q_TAG;
1113                         }
1114                         scsi_read_write(&start_ccb->csio,
1115                                         /*retries*/4,
1116                                         dadone,
1117                                         tag_code,
1118                                         bp->bio_cmd == BIO_READ,
1119                                         /*byte2*/0,
1120                                         softc->minimum_cmd_size,
1121                                         bp->bio_pblkno,
1122                                         bp->bio_bcount / softc->params.secsize,
1123                                         bp->bio_data,
1124                                         bp->bio_bcount,
1125                                         /*sense_len*/SSD_FULL_SIZE,
1126                                         DA_DEFAULT_TIMEOUT * 1000);
1127                         start_ccb->ccb_h.ccb_state = DA_CCB_BUFFER_IO;
1128
1129                         /*
1130                          * Block out any asyncronous callbacks
1131                          * while we touch the pending ccb list.
1132                          */
1133                         oldspl = splcam();
1134                         LIST_INSERT_HEAD(&softc->pending_ccbs,
1135                                          &start_ccb->ccb_h, periph_links.le);
1136                         splx(oldspl);
1137
1138                         /* We expect a unit attention from this device */
1139                         if ((softc->flags & DA_FLAG_RETRY_UA) != 0) {
1140                                 start_ccb->ccb_h.ccb_state |= DA_CCB_RETRY_UA;
1141                                 softc->flags &= ~DA_FLAG_RETRY_UA;
1142                         }
1143
1144                         start_ccb->ccb_h.ccb_bp = bp;
1145                         bp = bioq_first(&softc->bio_queue);
1146                         splx(s);
1147
1148                         xpt_action(start_ccb);
1149                 }
1150
1151                 if (bp != NULL) {
1152                         /* Have more work to do, so ensure we stay scheduled */
1153                         xpt_schedule(periph, /* XXX priority */1);
1154                 }
1155                 break;
1156         }
1157         case DA_STATE_PROBE:
1158         {
1159                 struct ccb_scsiio *csio;
1160                 struct scsi_read_capacity_data *rcap;
1161
1162                 rcap = (struct scsi_read_capacity_data *)malloc(sizeof(*rcap),
1163                                                                 M_TEMP,
1164                                                                 M_NOWAIT);
1165                 if (rcap == NULL) {
1166                         printf("dastart: Couldn't malloc read_capacity data\n");
1167                         /* da_free_periph??? */
1168                         break;
1169                 }
1170                 csio = &start_ccb->csio;
1171                 scsi_read_capacity(csio,
1172                                    /*retries*/4,
1173                                    dadone,
1174                                    MSG_SIMPLE_Q_TAG,
1175                                    rcap,
1176                                    SSD_FULL_SIZE,
1177                                    /*timeout*/5000);
1178                 start_ccb->ccb_h.ccb_bp = NULL;
1179                 start_ccb->ccb_h.ccb_state = DA_CCB_PROBE;
1180                 xpt_action(start_ccb);
1181                 break;
1182         }
1183         }
1184 }
1185
1186
1187 static void
1188 dadone(struct cam_periph *periph, union ccb *done_ccb)
1189 {
1190         struct da_softc *softc;
1191         struct ccb_scsiio *csio;
1192
1193         softc = (struct da_softc *)periph->softc;
1194         csio = &done_ccb->csio;
1195         switch (csio->ccb_h.ccb_state & DA_CCB_TYPE_MASK) {
1196         case DA_CCB_BUFFER_IO:
1197         {
1198                 struct bio *bp;
1199                 int    oldspl;
1200
1201                 bp = (struct bio *)done_ccb->ccb_h.ccb_bp;
1202                 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1203                         int error;
1204                         int s;
1205                         int sf;
1206
1207                         if ((csio->ccb_h.ccb_state & DA_CCB_RETRY_UA) != 0)
1208                                 sf = SF_RETRY_UA;
1209                         else
1210                                 sf = 0;
1211
1212                         error = daerror(done_ccb, CAM_RETRY_SELTO, sf);
1213                         if (error == ERESTART) {
1214                                 /*
1215                                  * A retry was scheuled, so
1216                                  * just return.
1217                                  */
1218                                 return;
1219                         }
1220                         if (error != 0) {
1221                                 struct bio *q_bp;
1222
1223                                 s = splbio();
1224
1225                                 if (error == ENXIO) {
1226                                         /*
1227                                          * Catastrophic error.  Mark our pack as
1228                                          * invalid.
1229                                          */
1230                                         /* XXX See if this is really a media
1231                                          *     change first.
1232                                          */
1233                                         xpt_print_path(periph->path);
1234                                         printf("Invalidating pack\n");
1235                                         softc->flags |= DA_FLAG_PACK_INVALID;
1236                                 }
1237
1238                                 /*
1239                                  * return all queued I/O with EIO, so that
1240                                  * the client can retry these I/Os in the
1241                                  * proper order should it attempt to recover.
1242                                  */
1243                                 while ((q_bp = bioq_first(&softc->bio_queue))
1244                                         != NULL) {
1245                                         bioq_remove(&softc->bio_queue, q_bp);
1246                                         q_bp->bio_resid = q_bp->bio_bcount;
1247                                         q_bp->bio_error = EIO;
1248                                         q_bp->bio_flags |= BIO_ERROR;
1249                                         biodone(q_bp);
1250                                 }
1251                                 splx(s);
1252                                 bp->bio_error = error;
1253                                 bp->bio_resid = bp->bio_bcount;
1254                                 bp->bio_flags |= BIO_ERROR;
1255                         } else {
1256                                 bp->bio_resid = csio->resid;
1257                                 bp->bio_error = 0;
1258                                 if (bp->bio_resid != 0) {
1259                                         /* Short transfer ??? */
1260                                         bp->bio_flags |= BIO_ERROR;
1261                                 }
1262                         }
1263                         if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
1264                                 cam_release_devq(done_ccb->ccb_h.path,
1265                                                  /*relsim_flags*/0,
1266                                                  /*reduction*/0,
1267                                                  /*timeout*/0,
1268                                                  /*getcount_only*/0);
1269                 } else {
1270                         if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
1271                                 panic("REQ_CMP with QFRZN");
1272                         bp->bio_resid = csio->resid;
1273                         if (csio->resid > 0)
1274                                 bp->bio_flags |= BIO_ERROR;
1275                 }
1276
1277                 /*
1278                  * Block out any asyncronous callbacks
1279                  * while we touch the pending ccb list.
1280                  */
1281                 oldspl = splcam();
1282                 LIST_REMOVE(&done_ccb->ccb_h, periph_links.le);
1283                 splx(oldspl);
1284
1285                 if (softc->device_stats.busy_count == 0)
1286                         softc->flags |= DA_FLAG_WENT_IDLE;
1287
1288                 devstat_end_transaction_bio(&softc->device_stats, bp);
1289                 biodone(bp);
1290                 break;
1291         }
1292         case DA_CCB_PROBE:
1293         {
1294                 struct     scsi_read_capacity_data *rdcap;
1295                 char       announce_buf[80];
1296
1297                 rdcap = (struct scsi_read_capacity_data *)csio->data_ptr;
1298
1299                 if ((csio->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP) {
1300                         struct disk_params *dp;
1301
1302                         dasetgeom(periph, rdcap);
1303                         dp = &softc->params;
1304                         snprintf(announce_buf, sizeof(announce_buf),
1305                                 "%luMB (%u %u byte sectors: %dH %dS/T %dC)",
1306                                 (unsigned long) (((u_int64_t)dp->secsize *
1307                                 dp->sectors) / (1024*1024)), dp->sectors,
1308                                 dp->secsize, dp->heads, dp->secs_per_track,
1309                                 dp->cylinders);
1310                 } else {
1311                         int     error;
1312
1313                         announce_buf[0] = '\0';
1314
1315                         /*
1316                          * Retry any UNIT ATTENTION type errors.  They
1317                          * are expected at boot.
1318                          */
1319                         error = daerror(done_ccb, CAM_RETRY_SELTO,
1320                                         SF_RETRY_UA|SF_NO_PRINT);
1321                         if (error == ERESTART) {
1322                                 /*
1323                                  * A retry was scheuled, so
1324                                  * just return.
1325                                  */
1326                                 return;
1327                         } else if (error != 0) {
1328                                 struct scsi_sense_data *sense;
1329                                 int asc, ascq;
1330                                 int sense_key, error_code;
1331                                 int have_sense;
1332                                 cam_status status;
1333                                 struct ccb_getdev cgd;
1334
1335                                 /* Don't wedge this device's queue */
1336                                 status = done_ccb->ccb_h.status;
1337                                 if ((status & CAM_DEV_QFRZN) != 0)
1338                                         cam_release_devq(done_ccb->ccb_h.path,
1339                                                          /*relsim_flags*/0,
1340                                                          /*reduction*/0,
1341                                                          /*timeout*/0,
1342                                                          /*getcount_only*/0);
1343
1344
1345                                 xpt_setup_ccb(&cgd.ccb_h,
1346                                               done_ccb->ccb_h.path,
1347                                               /* priority */ 1);
1348                                 cgd.ccb_h.func_code = XPT_GDEV_TYPE;
1349                                 xpt_action((union ccb *)&cgd);
1350
1351                                 if (((csio->ccb_h.flags & CAM_SENSE_PHYS) != 0)
1352                                  || ((csio->ccb_h.flags & CAM_SENSE_PTR) != 0)
1353                                  || ((status & CAM_AUTOSNS_VALID) == 0))
1354                                         have_sense = FALSE;
1355                                 else
1356                                         have_sense = TRUE;
1357
1358                                 if (have_sense) {
1359                                         sense = &csio->sense_data;
1360                                         scsi_extract_sense(sense, &error_code,
1361                                                            &sense_key,
1362                                                            &asc, &ascq);
1363                                 }
1364                                 /*
1365                                  * Attach to anything that claims to be a
1366                                  * direct access or optical disk device,
1367                                  * as long as it doesn't return a "Logical
1368                                  * unit not supported" (0x25) error.
1369                                  */
1370                                 if ((have_sense) && (asc != 0x25)
1371                                  && (error_code == SSD_CURRENT_ERROR)) {
1372                                         const char *sense_key_desc;
1373                                         const char *asc_desc;
1374
1375                                         scsi_sense_desc(sense_key, asc, ascq,
1376                                                         &cgd.inq_data,
1377                                                         &sense_key_desc,
1378                                                         &asc_desc);
1379                                         snprintf(announce_buf,
1380                                             sizeof(announce_buf),
1381                                                 "Attempt to query device "
1382                                                 "size failed: %s, %s",
1383                                                 sense_key_desc,
1384                                                 asc_desc);
1385                                 } else {
1386                                         if (have_sense)
1387                                                 scsi_sense_print(
1388                                                         &done_ccb->csio);
1389                                         else {
1390                                                 xpt_print_path(periph->path);
1391                                                 printf("got CAM status %#x\n",
1392                                                        done_ccb->ccb_h.status);
1393                                         }
1394
1395                                         xpt_print_path(periph->path);
1396                                         printf("fatal error, failed"
1397                                                " to attach to device\n");
1398
1399                                         /*
1400                                          * Free up resources.
1401                                          */
1402                                         cam_periph_invalidate(periph);
1403                                 }
1404                         }
1405                 }
1406                 free(rdcap, M_TEMP);
1407                 if (announce_buf[0] != '\0')
1408                         xpt_announce_periph(periph, announce_buf);
1409                 softc->state = DA_STATE_NORMAL;
1410                 /*
1411                  * Since our peripheral may be invalidated by an error
1412                  * above or an external event, we must release our CCB
1413                  * before releasing the probe lock on the peripheral.
1414                  * The peripheral will only go away once the last lock
1415                  * is removed, and we need it around for the CCB release
1416                  * operation.
1417                  */
1418                 xpt_release_ccb(done_ccb);
1419                 cam_periph_unlock(periph);
1420                 return;
1421         }
1422         case DA_CCB_WAITING:
1423         {
1424                 /* Caller will release the CCB */
1425                 wakeup(&done_ccb->ccb_h.cbfcnp);
1426                 return;
1427         }
1428         case DA_CCB_DUMP:
1429                 /* No-op.  We're polling */
1430                 return;
1431         default:
1432                 break;
1433         }
1434         xpt_release_ccb(done_ccb);
1435 }
1436
1437 static int
1438 daerror(union ccb *ccb, u_int32_t cam_flags, u_int32_t sense_flags)
1439 {
1440         struct da_softc   *softc;
1441         struct cam_periph *periph;
1442
1443         periph = xpt_path_periph(ccb->ccb_h.path);
1444         softc = (struct da_softc *)periph->softc;
1445
1446         /*
1447          * XXX
1448          * Until we have a better way of doing pack validation,
1449          * don't treat UAs as errors.
1450          */
1451         sense_flags |= SF_RETRY_UA;
1452         return(cam_periph_error(ccb, cam_flags, sense_flags,
1453                                 &softc->saved_ccb));
1454 }
1455
1456 static void
1457 daprevent(struct cam_periph *periph, int action)
1458 {
1459         struct  da_softc *softc;
1460         union   ccb *ccb;
1461         int     error;
1462
1463         softc = (struct da_softc *)periph->softc;
1464
1465         if (((action == PR_ALLOW)
1466           && (softc->flags & DA_FLAG_PACK_LOCKED) == 0)
1467          || ((action == PR_PREVENT)
1468           && (softc->flags & DA_FLAG_PACK_LOCKED) != 0)) {
1469                 return;
1470         }
1471
1472         ccb = cam_periph_getccb(periph, /*priority*/1);
1473
1474         scsi_prevent(&ccb->csio,
1475                      /*retries*/1,
1476                      /*cbcfp*/dadone,
1477                      MSG_SIMPLE_Q_TAG,
1478                      action,
1479                      SSD_FULL_SIZE,
1480                      5000);
1481
1482         error = cam_periph_runccb(ccb, /*error_routine*/NULL, /*cam_flags*/0,
1483                                   /*sense_flags*/0, &softc->device_stats);
1484
1485         if (error == 0) {
1486                 if (action == PR_ALLOW)
1487                         softc->flags &= ~DA_FLAG_PACK_LOCKED;
1488                 else
1489                         softc->flags |= DA_FLAG_PACK_LOCKED;
1490         }
1491
1492         xpt_release_ccb(ccb);
1493 }
1494
1495 static void
1496 dasetgeom(struct cam_periph *periph, struct scsi_read_capacity_data * rdcap)
1497 {
1498         struct ccb_calc_geometry ccg;
1499         struct da_softc *softc;
1500         struct disk_params *dp;
1501
1502         softc = (struct da_softc *)periph->softc;
1503
1504         dp = &softc->params;
1505         dp->secsize = scsi_4btoul(rdcap->length);
1506         dp->sectors = scsi_4btoul(rdcap->addr) + 1;
1507         /*
1508          * Have the controller provide us with a geometry
1509          * for this disk.  The only time the geometry
1510          * matters is when we boot and the controller
1511          * is the only one knowledgeable enough to come
1512          * up with something that will make this a bootable
1513          * device.
1514          */
1515         xpt_setup_ccb(&ccg.ccb_h, periph->path, /*priority*/1);
1516         ccg.ccb_h.func_code = XPT_CALC_GEOMETRY;
1517         ccg.block_size = dp->secsize;
1518         ccg.volume_size = dp->sectors;
1519         ccg.heads = 0;
1520         ccg.secs_per_track = 0;
1521         ccg.cylinders = 0;
1522         xpt_action((union ccb*)&ccg);
1523         dp->heads = ccg.heads;
1524         dp->secs_per_track = ccg.secs_per_track;
1525         dp->cylinders = ccg.cylinders;
1526 }
1527
1528 static void
1529 dasendorderedtag(void *arg)
1530 {
1531         struct da_softc *softc;
1532         int s;
1533
1534         for (softc = SLIST_FIRST(&softc_list);
1535              softc != NULL;
1536              softc = SLIST_NEXT(softc, links)) {
1537                 s = splsoftcam();
1538                 if ((softc->ordered_tag_count == 0)
1539                  && ((softc->flags & DA_FLAG_WENT_IDLE) == 0)) {
1540                         softc->flags |= DA_FLAG_NEED_OTAG;
1541                 }
1542                 if (softc->device_stats.busy_count > 0)
1543                         softc->flags &= ~DA_FLAG_WENT_IDLE;
1544
1545                 softc->ordered_tag_count = 0;
1546                 splx(s);
1547         }
1548         /* Queue us up again */
1549         timeout(dasendorderedtag, NULL,
1550                 (DA_DEFAULT_TIMEOUT * hz) / DA_ORDEREDTAG_INTERVAL);
1551 }
1552
1553 /*
1554  * Step through all DA peripheral drivers, and if the device is still open,
1555  * sync the disk cache to physical media.
1556  */
1557 static void
1558 dashutdown(void * arg, int howto)
1559 {
1560         struct cam_periph *periph;
1561         struct da_softc *softc;
1562
1563         TAILQ_FOREACH(periph, &dadriver.units, unit_links) {
1564                 union ccb ccb;
1565                 softc = (struct da_softc *)periph->softc;
1566
1567                 /*
1568                  * We only sync the cache if the drive is still open, and
1569                  * if the drive is capable of it..
1570                  */
1571                 if (((softc->flags & DA_FLAG_OPEN) == 0)
1572                  || (softc->quirks & DA_Q_NO_SYNC_CACHE))
1573                         continue;
1574
1575                 xpt_setup_ccb(&ccb.ccb_h, periph->path, /*priority*/1);
1576
1577                 ccb.ccb_h.ccb_state = DA_CCB_DUMP;
1578                 scsi_synchronize_cache(&ccb.csio,
1579                                        /*retries*/1,
1580                                        /*cbfcnp*/dadone,
1581                                        MSG_SIMPLE_Q_TAG,
1582                                        /*begin_lba*/0, /* whole disk */
1583                                        /*lb_count*/0,
1584                                        SSD_FULL_SIZE,
1585                                        5 * 60 * 1000);
1586
1587                 xpt_polled_action(&ccb);
1588
1589                 if ((ccb.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1590                         if (((ccb.ccb_h.status & CAM_STATUS_MASK) ==
1591                              CAM_SCSI_STATUS_ERROR)
1592                          && (ccb.csio.scsi_status == SCSI_STATUS_CHECK_COND)){
1593                                 int error_code, sense_key, asc, ascq;
1594
1595                                 scsi_extract_sense(&ccb.csio.sense_data,
1596                                                    &error_code, &sense_key,
1597                                                    &asc, &ascq);
1598
1599                                 if (sense_key != SSD_KEY_ILLEGAL_REQUEST)
1600                                         scsi_sense_print(&ccb.csio);
1601                         } else {
1602                                 xpt_print_path(periph->path);
1603                                 printf("Synchronize cache failed, status "
1604                                        "== 0x%x, scsi status == 0x%x\n",
1605                                        ccb.ccb_h.status, ccb.csio.scsi_status);
1606                         }
1607                 }
1608
1609                 if ((ccb.ccb_h.status & CAM_DEV_QFRZN) != 0)
1610                         cam_release_devq(ccb.ccb_h.path,
1611                                          /*relsim_flags*/0,
1612                                          /*reduction*/0,
1613                                          /*timeout*/0,
1614                                          /*getcount_only*/0);
1615
1616         }
1617 }
1618
1619 #else /* !_KERNEL */
1620
1621 /*
1622  * XXX This is only left out of the kernel build to silence warnings.  If,
1623  * for some reason this function is used in the kernel, the ifdefs should
1624  * be moved so it is included both in the kernel and userland.
1625  */
1626 void
1627 scsi_format_unit(struct ccb_scsiio *csio, u_int32_t retries,
1628                  void (*cbfcnp)(struct cam_periph *, union ccb *),
1629                  u_int8_t tag_action, u_int8_t byte2, u_int16_t ileave,
1630                  u_int8_t *data_ptr, u_int32_t dxfer_len, u_int8_t sense_len,
1631                  u_int32_t timeout)
1632 {
1633         struct scsi_format_unit *scsi_cmd;
1634
1635         scsi_cmd = (struct scsi_format_unit *)&csio->cdb_io.cdb_bytes;
1636         scsi_cmd->opcode = FORMAT_UNIT;
1637         scsi_cmd->byte2 = byte2;
1638         scsi_ulto2b(ileave, scsi_cmd->interleave);
1639
1640         cam_fill_csio(csio,
1641                       retries,
1642                       cbfcnp,
1643                       /*flags*/ (dxfer_len > 0) ? CAM_DIR_OUT : CAM_DIR_NONE,
1644                       tag_action,
1645                       data_ptr,
1646                       dxfer_len,
1647                       sense_len,
1648                       sizeof(*scsi_cmd),
1649                       timeout);
1650 }
1651
1652 #endif /* _KERNEL */