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 #include "opt_hw_wdog.h"
  32
  33 #include <sys/param.h>
  34 #include <sys/systm.h>
  35 #include <sys/kernel.h>
  36 #include <sys/buf.h>
  37 #include <sys/devicestat.h>
  38 #include <sys/conf.h>
  39 #include <sys/disk.h>
  40 #include <sys/eventhandler.h>
  41 #include <sys/malloc.h>
  42 #include <sys/cons.h>
  43
  44 #include <machine/md_var.h>
  45
  46 #include <vm/vm.h>
  47 #include <vm/pmap.h>
  48
  49 #include <cam/cam.h>
  50 #include <cam/cam_ccb.h>
  51 #include <cam/cam_extend.h>
  52 #include <cam/cam_periph.h>
  53 #include <cam/cam_xpt_periph.h>
  54
  55 #include <cam/scsi/scsi_message.h>
  56
  57 typedef enum {
  58         DA_STATE_PROBE,
  59         DA_STATE_NORMAL
  60 } da_state;
  61
  62 typedef enum {
  63         DA_FLAG_PACK_INVALID    = 0x001,
  64         DA_FLAG_NEW_PACK        = 0x002,
  65         DA_FLAG_PACK_LOCKED     = 0x004,
  66         DA_FLAG_PACK_REMOVABLE  = 0x008,
  67         DA_FLAG_TAGGED_QUEUING  = 0x010,
  68         DA_FLAG_NEED_OTAG       = 0x020,
  69         DA_FLAG_WENT_IDLE       = 0x040,
  70         DA_FLAG_RETRY_UA        = 0x080,
  71         DA_FLAG_OPEN            = 0x100
  72 } da_flags;
  73
  74 typedef enum {
  75         DA_Q_NONE               = 0x00,
  76         DA_Q_NO_SYNC_CACHE      = 0x01,
  77         DA_Q_NO_6_BYTE          = 0x02
  78 } da_quirks;
  79
  80 typedef enum {
  81         DA_CCB_PROBE            = 0x01,
  82         DA_CCB_BUFFER_IO        = 0x02,
  83         DA_CCB_WAITING          = 0x03,
  84         DA_CCB_DUMP             = 0x04,
  85         DA_CCB_TYPE_MASK        = 0x0F,
  86         DA_CCB_RETRY_UA         = 0x10
  87 } da_ccb_state;
  88
  89 /* Offsets into our private area for storing information */
  90 #define ccb_state       ppriv_field0
  91 #define ccb_bp          ppriv_ptr1
  92
  93 struct disk_params {
  94         u_int8_t  heads;
  95         u_int16_t cylinders;
  96         u_int8_t  secs_per_track;
  97         u_int32_t secsize;      /* Number of bytes/sector */
  98         u_int32_t sectors;      /* total number sectors */
  99 };
 100
 101 struct da_softc {
 102         struct   buf_queue_head buf_queue;
 103         struct   devstat device_stats;
 104         SLIST_ENTRY(da_softc) links;
 105         LIST_HEAD(, ccb_hdr) pending_ccbs;
 106         da_state state;
 107         da_flags flags;
 108         da_quirks quirks;
 109         int      minimum_cmd_size;
 110         int      ordered_tag_count;
 111         struct   disk_params params;
 112         struct   disk disk;
 113         union    ccb saved_ccb;
 114 };
 115
 116 struct da_quirk_entry {
 117         struct scsi_inquiry_pattern inq_pat;
 118         da_quirks quirks;
 119 };
 120
 121 static struct da_quirk_entry da_quirk_table[] =
 122 {
 123         {
 124                 /*
 125                  * This particular Fujitsu drive doesn't like the
 126                  * synchronize cache command.
 127                  * Reported by: Tom Jackson <toj@gorilla.net>
 128                  */
 129                 {T_DIRECT, SIP_MEDIA_FIXED, "FUJITSU", "M2954*", "*"},
 130                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 131
 132         },
 133         {
 134                 /*
 135                  * This drive doesn't like the synchronize cache command
 136                  * either.  Reported by: Matthew Jacob <mjacob@feral.com>
 137                  * in NetBSD PR kern/6027, August 24, 1998.
 138                  */
 139                 {T_DIRECT, SIP_MEDIA_FIXED, "MICROP", "2217*", "*"},
 140                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 141         },
 142         {
 143                 /*
 144                  * This drive doesn't like the synchronize cache command
 145                  * either.  Reported by: Hellmuth Michaelis (hm@kts.org)
 146                  * (PR 8882).
 147                  */
 148                 {T_DIRECT, SIP_MEDIA_FIXED, "MICROP", "2112*", "*"},
 149                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 150         },
 151         {
 152                 /*
 153                  * Doesn't like the synchronize cache command.
 154                  * Reported by: Blaz Zupan <blaz@gold.amis.net>
 155                  */
 156                 {T_DIRECT, SIP_MEDIA_FIXED, "NEC", "D3847*", "*"},
 157                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 158         },
 159         {
 160                 /*
 161                  * Doesn't work correctly with 6 byte reads/writes.
 162                  * Returns illegal request, and points to byte 9 of the
 163                  * 6-byte CDB.
 164                  * Reported by:  Adam McDougall <bsdx@spawnet.com>
 165                  */
 166                 {T_DIRECT, SIP_MEDIA_FIXED, "QUANTUM", "VIKING 4*", "*"},
 167                 /*quirks*/ DA_Q_NO_6_BYTE
 168         },
 169         {
 170                 /*
 171                  * See above.
 172                  */
 173                 {T_DIRECT, SIP_MEDIA_FIXED, "QUANTUM", "VIKING 2*", "*"},
 174                 /*quirks*/ DA_Q_NO_6_BYTE
 175         },
 176         {
 177                 /*
 178                  * This USB floppy drive uses the UFI command set. This
 179                  * command set is a derivative of the ATAPI command set and
 180                  * does not support READ_6 commands only READ_10. It also does
 181                  * not support sync cache (0x35).
 182                  */
 183                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Y-E DATA", "USB-FDU", "*"},
 184                 /*quirks*/ DA_Q_NO_6_BYTE|DA_Q_NO_SYNC_CACHE
 185         }
 186 };
 187
 188 static  d_open_t        daopen;
 189 static  d_close_t       daclose;
 190 static  d_strategy_t    dastrategy;
 191 static  d_ioctl_t       daioctl;
 192 static  d_dump_t        dadump;
 193 static  periph_init_t   dainit;
 194 static  void            daasync(void *callback_arg, u_int32_t code,
 195                                 struct cam_path *path, void *arg);
 196 static  periph_ctor_t   daregister;
 197 static  periph_dtor_t   dacleanup;
 198 static  periph_start_t  dastart;
 199 static  periph_oninv_t  daoninvalidate;
 200 static  void            dadone(struct cam_periph *periph,
 201                                union ccb *done_ccb);
 202 static  int             daerror(union ccb *ccb, u_int32_t cam_flags,
 203                                 u_int32_t sense_flags);
 204 static void             daprevent(struct cam_periph *periph, int action);
 205 static void             dasetgeom(struct cam_periph *periph,
 206                                   struct scsi_read_capacity_data * rdcap);
 207 static timeout_t        dasendorderedtag;
 208 static void             dashutdown(void *arg, int howto);
 209
 210 #ifndef DA_DEFAULT_TIMEOUT
 211 #define DA_DEFAULT_TIMEOUT 60   /* Timeout in seconds */
 212 #endif
 213
 214 /*
 215  * DA_ORDEREDTAG_INTERVAL determines how often, relative
 216  * to the default timeout, we check to see whether an ordered
 217  * tagged transaction is appropriate to prevent simple tag
 218  * starvation.  Since we'd like to ensure that there is at least
 219  * 1/2 of the timeout length left for a starved transaction to
 220  * complete after we've sent an ordered tag, we must poll at least
 221  * four times in every timeout period.  This takes care of the worst
 222  * case where a starved transaction starts during an interval that
 223  * meets the requirement "don't send an ordered tag" test so it takes
 224  * us two intervals to determine that a tag must be sent.
 225  */
 226 #ifndef DA_ORDEREDTAG_INTERVAL
 227 #define DA_ORDEREDTAG_INTERVAL 4
 228 #endif
 229
 230 static struct periph_driver dadriver =
 231 {
 232         dainit, "da",
 233         TAILQ_HEAD_INITIALIZER(dadriver.units), /* generation */ 0
 234 };
 235
 236 DATA_SET(periphdriver_set, dadriver);
 237
 238 #define DA_CDEV_MAJOR 13
 239 #define DA_BDEV_MAJOR 4
 240
 241 /* For 2.2-stable support */
 242 #ifndef D_DISK
 243 #define D_DISK 0
 244 #endif
 245
 246 static struct cdevsw da_cdevsw = {
 247         /* open */      daopen,
 248         /* close */     daclose,
 249         /* read */      physread,
 250         /* write */     physwrite,
 251         /* ioctl */     daioctl,
 252         /* poll */      nopoll,
 253         /* mmap */      nommap,
 254         /* strategy */  dastrategy,
 255         /* name */      "da",
 256         /* maj */       DA_CDEV_MAJOR,
 257         /* dump */      dadump,
 258         /* psize */     nopsize,
 259         /* flags */     D_DISK,
 260         /* bmaj */      DA_BDEV_MAJOR
 261 };
 262
 263 static struct cdevsw dadisk_cdevsw;
 264
 265 static SLIST_HEAD(,da_softc) softc_list;
 266 static struct extend_array *daperiphs;
 267
 268 static int
 269 daopen(dev_t dev, int flags, int fmt, struct proc *p)
 270 {
 271         struct cam_periph *periph;
 272         struct da_softc *softc;
 273         struct disklabel *label;
 274         int unit;
 275         int part;
 276         int error;
 277         int s;
 278
 279         unit = dkunit(dev);
 280         part = dkpart(dev);
 281         periph = cam_extend_get(daperiphs, unit);
 282         if (periph == NULL)
 283                 return (ENXIO);
 284
 285         softc = (struct da_softc *)periph->softc;
 286
 287         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE,
 288             ("daopen: dev=%s (unit %d , partition %d)\n", devtoname(dev),
 289              unit, part));
 290
 291         if ((error = cam_periph_lock(periph, PRIBIO|PCATCH)) != 0) {
 292                 return (error); /* error code from tsleep */
 293         }
 294
 295         if (cam_periph_acquire(periph) != CAM_REQ_CMP)
 296                 return(ENXIO);
 297         softc->flags |= DA_FLAG_OPEN;
 298
 299         s = splsoftcam();
 300         if ((softc->flags & DA_FLAG_PACK_INVALID) != 0) {
 301                 /* Invalidate our pack information. */
 302                 disk_invalidate(&softc->disk);
 303                 softc->flags &= ~DA_FLAG_PACK_INVALID;
 304         }
 305         splx(s);
 306
 307         /* Do a read capacity */
 308         {
 309                 struct scsi_read_capacity_data *rcap;
 310                 union  ccb *ccb;
 311
 312                 rcap = (struct scsi_read_capacity_data *)malloc(sizeof(*rcap),
 313                                                                 M_TEMP,
 314                                                                 M_WAITOK);
 315
 316                 ccb = cam_periph_getccb(periph, /*priority*/1);
 317                 scsi_read_capacity(&ccb->csio,
 318                                    /*retries*/1,
 319                                    /*cbfncp*/dadone,
 320                                    MSG_SIMPLE_Q_TAG,
 321                                    rcap,
 322                                    SSD_FULL_SIZE,
 323                                    /*timeout*/60000);
 324                 ccb->ccb_h.ccb_bp = NULL;
 325
 326                 error = cam_periph_runccb(ccb, daerror, /*cam_flags*/0,
 327                                           /*sense_flags*/SF_RETRY_UA |
 328                                                          SF_RETRY_SELTO,
 329                                           &softc->device_stats);
 330
 331                 xpt_release_ccb(ccb);
 332
 333                 if (error == 0) {
 334                         dasetgeom(periph, rcap);
 335                 }
 336
 337                 free(rcap, M_TEMP);
 338         }
 339
 340         if (error == 0) {
 341                 struct ccb_getdev cgd;
 342
 343                 /* Build label for whole disk. */
 344                 label = &softc->disk.d_label;
 345                 bzero(label, sizeof(*label));
 346                 label->d_type = DTYPE_SCSI;
 347
 348                 /*
 349                  * Grab the inquiry data to get the vendor and product names.
 350                  * Put them in the typename and packname for the label.
 351                  */
 352                 xpt_setup_ccb(&cgd.ccb_h, periph->path, /*priority*/ 1);
 353                 cgd.ccb_h.func_code = XPT_GDEV_TYPE;
 354                 xpt_action((union ccb *)&cgd);
 355
 356                 strncpy(label->d_typename, cgd.inq_data.vendor,
 357                         min(SID_VENDOR_SIZE, sizeof(label->d_typename)));
 358                 strncpy(label->d_packname, cgd.inq_data.product,
 359                         min(SID_PRODUCT_SIZE, sizeof(label->d_packname)));
 360
 361                 label->d_secsize = softc->params.secsize;
 362                 label->d_nsectors = softc->params.secs_per_track;
 363                 label->d_ntracks = softc->params.heads;
 364                 label->d_ncylinders = softc->params.cylinders;
 365                 label->d_secpercyl = softc->params.heads
 366                                   * softc->params.secs_per_track;
 367                 label->d_secperunit = softc->params.sectors;
 368
 369                 if (((softc->flags & DA_FLAG_PACK_REMOVABLE) != 0)) {
 370                         daprevent(periph, PR_PREVENT);
 371                 }
 372
 373                 /*
 374                  * Check to see whether or not the blocksize is set yet.
 375                  * If it isn't, set it and then clear the blocksize
 376                  * unavailable flag for the device statistics.
 377                  */
 378                 if ((softc->device_stats.flags & DEVSTAT_BS_UNAVAILABLE) != 0){
 379                         softc->device_stats.block_size = softc->params.secsize;
 380                         softc->device_stats.flags &= ~DEVSTAT_BS_UNAVAILABLE;
 381                 }
 382         }
 383
 384         if (error != 0) {
 385                 if ((softc->flags & DA_FLAG_PACK_REMOVABLE) != 0) {
 386                         daprevent(periph, PR_ALLOW);
 387                 }
 388         }
 389         cam_periph_unlock(periph);
 390         return (error);
 391 }
 392
 393 static int
 394 daclose(dev_t dev, int flag, int fmt, struct proc *p)
 395 {
 396         struct  cam_periph *periph;
 397         struct  da_softc *softc;
 398         int     unit;
 399         int     error;
 400
 401         unit = dkunit(dev);
 402         periph = cam_extend_get(daperiphs, unit);
 403         if (periph == NULL)
 404                 return (ENXIO);
 405
 406         softc = (struct da_softc *)periph->softc;
 407
 408         if ((error = cam_periph_lock(periph, PRIBIO)) != 0) {
 409                 return (error); /* error code from tsleep */
 410         }
 411
 412         if ((softc->quirks & DA_Q_NO_SYNC_CACHE) == 0) {
 413                 union   ccb *ccb;
 414
 415                 ccb = cam_periph_getccb(periph, /*priority*/1);
 416
 417                 scsi_synchronize_cache(&ccb->csio,
 418                                        /*retries*/1,
 419                                        /*cbfcnp*/dadone,
 420                                        MSG_SIMPLE_Q_TAG,
 421                                        /*begin_lba*/0,/* Cover the whole disk */
 422                                        /*lb_count*/0,
 423                                        SSD_FULL_SIZE,
 424                                        5 * 60 * 1000);
 425
 426                 cam_periph_runccb(ccb, /*error_routine*/NULL, /*cam_flags*/0,
 427                                   /*sense_flags*/SF_RETRY_UA,
 428                                   &softc->device_stats);
 429
 430                 if ((ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
 431                         if ((ccb->ccb_h.status & CAM_STATUS_MASK) ==
 432                              CAM_SCSI_STATUS_ERROR) {
 433                                 int asc, ascq;
 434                                 int sense_key, error_code;
 435
 436                                 scsi_extract_sense(&ccb->csio.sense_data,
 437                                                    &error_code,
 438                                                    &sense_key,
 439                                                    &asc, &ascq);
 440                                 if (sense_key != SSD_KEY_ILLEGAL_REQUEST)
 441                                         scsi_sense_print(&ccb->csio);
 442                         } else {
 443                                 xpt_print_path(periph->path);
 444                                 printf("Synchronize cache failed, status "
 445                                        "== 0x%x, scsi status == 0x%x\n",
 446                                        ccb->csio.ccb_h.status,
 447                                        ccb->csio.scsi_status);
 448                         }
 449                 }
 450
 451                 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
 452                         cam_release_devq(ccb->ccb_h.path,
 453                                          /*relsim_flags*/0,
 454                                          /*reduction*/0,
 455                                          /*timeout*/0,
 456                                          /*getcount_only*/0);
 457
 458                 xpt_release_ccb(ccb);
 459
 460         }
 461
 462         if ((softc->flags & DA_FLAG_PACK_REMOVABLE) != 0) {
 463                 daprevent(periph, PR_ALLOW);
 464                 /*
 465                  * If we've got removeable media, mark the blocksize as
 466                  * unavailable, since it could change when new media is
 467                  * inserted.
 468                  */
 469                 softc->device_stats.flags |= DEVSTAT_BS_UNAVAILABLE;
 470         }
 471
 472         softc->flags &= ~DA_FLAG_OPEN;
 473         cam_periph_unlock(periph);
 474         cam_periph_release(periph);
 475         return (0);
 476 }
 477
 478 /*
 479  * Actually translate the requested transfer into one the physical driver
 480  * can understand.  The transfer is described by a buf and will include
 481  * only one physical transfer.
 482  */
 483 static void
 484 dastrategy(struct buf *bp)
 485 {
 486         struct cam_periph *periph;
 487         struct da_softc *softc;
 488         u_int  unit;
 489         u_int  part;
 490         int    s;
 491
 492         unit = dkunit(bp->b_dev);
 493         part = dkpart(bp->b_dev);
 494         periph = cam_extend_get(daperiphs, unit);
 495         if (periph == NULL) {
 496                 bp->b_error = ENXIO;
 497                 goto bad;
 498         }
 499         softc = (struct da_softc *)periph->softc;
 500 #if 0
 501         /*
 502          * check it's not too big a transfer for our adapter
 503          */
 504         scsi_minphys(bp,&sd_switch);
 505 #endif
 506
 507         /*
 508          * Mask interrupts so that the pack cannot be invalidated until
 509          * after we are in the queue.  Otherwise, we might not properly
 510          * clean up one of the buffers.
 511          */
 512         s = splbio();
 513
 514         /*
 515          * If the device has been made invalid, error out
 516          */
 517         if ((softc->flags & DA_FLAG_PACK_INVALID)) {
 518                 splx(s);
 519                 bp->b_error = ENXIO;
 520                 goto bad;
 521         }
 522
 523         /*
 524          * Place it in the queue of disk activities for this disk
 525          */
 526         bufqdisksort(&softc->buf_queue, bp);
 527
 528         splx(s);
 529
 530         /*
 531          * Schedule ourselves for performing the work.
 532          */
 533         xpt_schedule(periph, /* XXX priority */1);
 534
 535         return;
 536 bad:
 537         bp->b_flags |= B_ERROR;
 538
 539         /*
 540          * Correctly set the buf to indicate a completed xfer
 541          */
 542         bp->b_resid = bp->b_bcount;
 543         biodone(bp);
 544         return;
 545 }
 546
 547 /* For 2.2-stable support */
 548 #ifndef ENOIOCTL
 549 #define ENOIOCTL -1
 550 #endif
 551
 552 static int
 553 daioctl(dev_t dev, u_long cmd, caddr_t addr, int flag, struct proc *p)
 554 {
 555         struct cam_periph *periph;
 556         struct da_softc *softc;
 557         int unit;
 558         int error;
 559
 560         unit = dkunit(dev);
 561         periph = cam_extend_get(daperiphs, unit);
 562         if (periph == NULL)
 563                 return (ENXIO);
 564
 565         softc = (struct da_softc *)periph->softc;
 566
 567         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("daioctl\n"));
 568
 569         if ((error = cam_periph_lock(periph, PRIBIO|PCATCH)) != 0) {
 570                 return (error); /* error code from tsleep */
 571         }
 572
 573         error = cam_periph_ioctl(periph, cmd, addr, daerror);
 574
 575         cam_periph_unlock(periph);
 576
 577         return (error);
 578 }
 579
 580 static int
 581 dadump(dev_t dev)
 582 {
 583         struct      cam_periph *periph;
 584         struct      da_softc *softc;
 585         u_int       unit;
 586         u_int       part;
 587         u_int       secsize;
 588         u_int       num;        /* number of sectors to write */
 589         u_int       blknum;
 590         long        blkcnt;
 591         vm_offset_t addr;
 592         struct      ccb_scsiio csio;
 593         int         error;
 594
 595         /* toss any characters present prior to dump */
 596         while (cncheckc() != -1)
 597                 ;
 598
 599         unit = dkunit(dev);
 600         part = dkpart(dev);
 601         periph = cam_extend_get(daperiphs, unit);
 602         if (periph == NULL) {
 603                 return (ENXIO);
 604         }
 605         softc = (struct da_softc *)periph->softc;
 606
 607         if ((softc->flags & DA_FLAG_PACK_INVALID) != 0)
 608                 return (ENXIO);
 609
 610         error = disk_dumpcheck(dev, &num, &blknum, &secsize);
 611         if (error)
 612                 return (error);
 613
 614         addr = 0;       /* starting address */
 615         blkcnt = howmany(PAGE_SIZE, secsize);
 616
 617         while (num > 0) {
 618
 619                 if (is_physical_memory(addr)) {
 620                         pmap_enter(kernel_pmap, (vm_offset_t)CADDR1,
 621                                    trunc_page(addr), VM_PROT_READ, TRUE);
 622                 } else {
 623                         pmap_enter(kernel_pmap, (vm_offset_t)CADDR1,
 624                                    trunc_page(0), VM_PROT_READ, TRUE);
 625                 }
 626
 627                 xpt_setup_ccb(&csio.ccb_h, periph->path, /*priority*/1);
 628                 csio.ccb_h.ccb_state = DA_CCB_DUMP;
 629                 scsi_read_write(&csio,
 630                                 /*retries*/1,
 631                                 dadone,
 632                                 MSG_ORDERED_Q_TAG,
 633                                 /*read*/FALSE,
 634                                 /*byte2*/0,
 635                                 /*minimum_cmd_size*/ softc->minimum_cmd_size,
 636                                 blknum,
 637                                 blkcnt,
 638                                 /*data_ptr*/CADDR1,
 639                                 /*dxfer_len*/blkcnt * secsize,
 640                                 /*sense_len*/SSD_FULL_SIZE,
 641                                 DA_DEFAULT_TIMEOUT * 1000);
 642                 xpt_polled_action((union ccb *)&csio);
 643
 644                 if ((csio.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
 645                         printf("Aborting dump due to I/O error.\n");
 646                         if ((csio.ccb_h.status & CAM_STATUS_MASK) ==
 647                              CAM_SCSI_STATUS_ERROR)
 648                                 scsi_sense_print(&csio);
 649                         else
 650                                 printf("status == 0x%x, scsi status == 0x%x\n",
 651                                        csio.ccb_h.status, csio.scsi_status);
 652                         return(EIO);
 653                 }
 654
 655                 if (addr % (1024 * 1024) == 0) {
 656 #ifdef  HW_WDOG
 657                         if (wdog_tickler)
 658                                 (*wdog_tickler)();
 659 #endif /* HW_WDOG */
 660                         /* Count in MB of data left to write */
 661                         printf("%d ", (num  * softc->params.secsize)
 662                                      / (1024 * 1024));
 663                 }
 664
 665                 /* update block count */
 666                 num -= blkcnt;
 667                 blknum += blkcnt;
 668                 addr += PAGE_SIZE;
 669
 670                 /* operator aborting dump? */
 671                 if (cncheckc() != -1)
 672                         return (EINTR);
 673         }
 674
 675         /*
 676          * Sync the disk cache contents to the physical media.
 677          */
 678         if ((softc->quirks & DA_Q_NO_SYNC_CACHE) == 0) {
 679
 680                 xpt_setup_ccb(&csio.ccb_h, periph->path, /*priority*/1);
 681                 csio.ccb_h.ccb_state = DA_CCB_DUMP;
 682                 scsi_synchronize_cache(&csio,
 683                                        /*retries*/1,
 684                                        /*cbfcnp*/dadone,
 685                                        MSG_SIMPLE_Q_TAG,
 686                                        /*begin_lba*/0,/* Cover the whole disk */
 687                                        /*lb_count*/0,
 688                                        SSD_FULL_SIZE,
 689                                        5 * 60 * 1000);
 690                 xpt_polled_action((union ccb *)&csio);
 691
 692                 if ((csio.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
 693                         if ((csio.ccb_h.status & CAM_STATUS_MASK) ==
 694                              CAM_SCSI_STATUS_ERROR) {
 695                                 int asc, ascq;
 696                                 int sense_key, error_code;
 697
 698                                 scsi_extract_sense(&csio.sense_data,
 699                                                    &error_code,
 700                                                    &sense_key,
 701                                                    &asc, &ascq);
 702                                 if (sense_key != SSD_KEY_ILLEGAL_REQUEST)
 703                                         scsi_sense_print(&csio);
 704                         } else {
 705                                 xpt_print_path(periph->path);
 706                                 printf("Synchronize cache failed, status "
 707                                        "== 0x%x, scsi status == 0x%x\n",
 708                                        csio.ccb_h.status, csio.scsi_status);
 709                         }
 710                 }
 711         }
 712         return (0);
 713 }
 714
 715 static void
 716 dainit(void)
 717 {
 718         cam_status status;
 719         struct cam_path *path;
 720
 721         /*
 722          * Create our extend array for storing the devices we attach to.
 723          */
 724         daperiphs = cam_extend_new();
 725         SLIST_INIT(&softc_list);
 726         if (daperiphs == NULL) {
 727                 printf("da: Failed to alloc extend array!\n");
 728                 return;
 729         }
 730
 731         /*
 732          * Install a global async callback.  This callback will
 733          * receive async callbacks like "new device found".
 734          */
 735         status = xpt_create_path(&path, /*periph*/NULL, CAM_XPT_PATH_ID,
 736                                  CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD);
 737
 738         if (status == CAM_REQ_CMP) {
 739                 struct ccb_setasync csa;
 740
 741                 xpt_setup_ccb(&csa.ccb_h, path, /*priority*/5);
 742                 csa.ccb_h.func_code = XPT_SASYNC_CB;
 743                 csa.event_enable = AC_FOUND_DEVICE;
 744                 csa.callback = daasync;
 745                 csa.callback_arg = NULL;
 746                 xpt_action((union ccb *)&csa);
 747                 status = csa.ccb_h.status;
 748                 xpt_free_path(path);
 749         }
 750
 751         if (status != CAM_REQ_CMP) {
 752                 printf("da: Failed to attach master async callback "
 753                        "due to status 0x%x!\n", status);
 754         } else {
 755
 756                 /*
 757                  * Schedule a periodic event to occasioanly send an
 758                  * ordered tag to a device.
 759                  */
 760                 timeout(dasendorderedtag, NULL,
 761                         (DA_DEFAULT_TIMEOUT * hz) / DA_ORDEREDTAG_INTERVAL);
 762
 763                 /* Register our shutdown event handler */
 764                 if ((EVENTHANDLER_REGISTER(shutdown_post_sync, dashutdown,
 765                                            NULL, SHUTDOWN_PRI_DEFAULT)) == NULL)
 766                     printf("dainit: shutdown event registration failed!\n");
 767         }
 768 }
 769
 770 static void
 771 daoninvalidate(struct cam_periph *periph)
 772 {
 773         int s;
 774         struct da_softc *softc;
 775         struct buf *q_bp;
 776         struct ccb_setasync csa;
 777
 778         softc = (struct da_softc *)periph->softc;
 779
 780         /*
 781          * De-register any async callbacks.
 782          */
 783         xpt_setup_ccb(&csa.ccb_h, periph->path,
 784                       /* priority */ 5);
 785         csa.ccb_h.func_code = XPT_SASYNC_CB;
 786         csa.event_enable = 0;
 787         csa.callback = daasync;
 788         csa.callback_arg = periph;
 789         xpt_action((union ccb *)&csa);
 790
 791         softc->flags |= DA_FLAG_PACK_INVALID;
 792
 793         /*
 794          * Although the oninvalidate() routines are always called at
 795          * splsoftcam, we need to be at splbio() here to keep the buffer
 796          * queue from being modified while we traverse it.
 797          */
 798         s = splbio();
 799
 800         /*
 801          * Return all queued I/O with ENXIO.
 802          * XXX Handle any transactions queued to the card
 803          *     with XPT_ABORT_CCB.
 804          */
 805         while ((q_bp = bufq_first(&softc->buf_queue)) != NULL){
 806                 bufq_remove(&softc->buf_queue, q_bp);
 807                 q_bp->b_resid = q_bp->b_bcount;
 808                 q_bp->b_error = ENXIO;
 809                 q_bp->b_flags |= B_ERROR;
 810                 biodone(q_bp);
 811         }
 812         splx(s);
 813
 814         SLIST_REMOVE(&softc_list, softc, da_softc, links);
 815
 816         xpt_print_path(periph->path);
 817         printf("lost device\n");
 818 }
 819
 820 static void
 821 dacleanup(struct cam_periph *periph)
 822 {
 823         struct da_softc *softc;
 824
 825         softc = (struct da_softc *)periph->softc;
 826
 827         devstat_remove_entry(&softc->device_stats);
 828         cam_extend_release(daperiphs, periph->unit_number);
 829         xpt_print_path(periph->path);
 830         printf("removing device entry\n");
 831         free(softc, M_DEVBUF);
 832 }
 833
 834 static void
 835 daasync(void *callback_arg, u_int32_t code,
 836         struct cam_path *path, void *arg)
 837 {
 838         struct cam_periph *periph;
 839
 840         periph = (struct cam_periph *)callback_arg;
 841         switch (code) {
 842         case AC_FOUND_DEVICE:
 843         {
 844                 struct ccb_getdev *cgd;
 845                 cam_status status;
 846
 847                 cgd = (struct ccb_getdev *)arg;
 848
 849                 if (SID_TYPE(&cgd->inq_data) != T_DIRECT
 850                     && SID_TYPE(&cgd->inq_data) != T_OPTICAL)
 851                         break;
 852
 853                 /*
 854                  * Allocate a peripheral instance for
 855                  * this device and start the probe
 856                  * process.
 857                  */
 858                 status = cam_periph_alloc(daregister, daoninvalidate,
 859                                           dacleanup, dastart,
 860                                           "da", CAM_PERIPH_BIO,
 861                                           cgd->ccb_h.path, daasync,
 862                                           AC_FOUND_DEVICE, cgd);
 863
 864                 if (status != CAM_REQ_CMP
 865                  && status != CAM_REQ_INPROG)
 866                         printf("daasync: Unable to attach to new device "
 867                                 "due to status 0x%x\n", status);
 868                 break;
 869         }
 870         case AC_SENT_BDR:
 871         case AC_BUS_RESET:
 872         {
 873                 struct da_softc *softc;
 874                 struct ccb_hdr *ccbh;
 875                 int s;
 876
 877                 softc = (struct da_softc *)periph->softc;
 878                 s = splsoftcam();
 879                 /*
 880                  * Don't fail on the expected unit attention
 881                  * that will occur.
 882                  */
 883                 softc->flags |= DA_FLAG_RETRY_UA;
 884                 for (ccbh = LIST_FIRST(&softc->pending_ccbs);
 885                      ccbh != NULL; ccbh = LIST_NEXT(ccbh, periph_links.le))
 886                         ccbh->ccb_state |= DA_CCB_RETRY_UA;
 887                 splx(s);
 888                 /* FALLTHROUGH*/
 889         }
 890         default:
 891                 cam_periph_async(periph, code, path, arg);
 892                 break;
 893         }
 894 }
 895
 896 static cam_status
 897 daregister(struct cam_periph *periph, void *arg)
 898 {
 899         int s;
 900         struct da_softc *softc;
 901         struct ccb_setasync csa;
 902         struct ccb_getdev *cgd;
 903         caddr_t match;
 904
 905         cgd = (struct ccb_getdev *)arg;
 906         if (periph == NULL) {
 907                 printf("daregister: periph was NULL!!\n");
 908                 return(CAM_REQ_CMP_ERR);
 909         }
 910
 911         if (cgd == NULL) {
 912                 printf("daregister: no getdev CCB, can't register device\n");
 913                 return(CAM_REQ_CMP_ERR);
 914         }
 915
 916         softc = (struct da_softc *)malloc(sizeof(*softc),M_DEVBUF,M_NOWAIT);
 917
 918         if (softc == NULL) {
 919                 printf("daregister: Unable to probe new device. "
 920                        "Unable to allocate softc\n");
 921                 return(CAM_REQ_CMP_ERR);
 922         }
 923
 924         bzero(softc, sizeof(*softc));
 925         LIST_INIT(&softc->pending_ccbs);
 926         softc->state = DA_STATE_PROBE;
 927         bufq_init(&softc->buf_queue);
 928         if (SID_IS_REMOVABLE(&cgd->inq_data))
 929                 softc->flags |= DA_FLAG_PACK_REMOVABLE;
 930         if ((cgd->inq_data.flags & SID_CmdQue) != 0)
 931                 softc->flags |= DA_FLAG_TAGGED_QUEUING;
 932
 933         periph->softc = softc;
 934
 935         cam_extend_set(daperiphs, periph->unit_number, periph);
 936
 937         /*
 938          * See if this device has any quirks.
 939          */
 940         match = cam_quirkmatch((caddr_t)&cgd->inq_data,
 941                                (caddr_t)da_quirk_table,
 942                                sizeof(da_quirk_table)/sizeof(*da_quirk_table),
 943                                sizeof(*da_quirk_table), scsi_inquiry_match);
 944
 945         if (match != NULL)
 946                 softc->quirks = ((struct da_quirk_entry *)match)->quirks;
 947         else
 948                 softc->quirks = DA_Q_NONE;
 949
 950         if (softc->quirks & DA_Q_NO_6_BYTE)
 951                 softc->minimum_cmd_size = 10;
 952         else
 953                 softc->minimum_cmd_size = 6;
 954
 955         /*
 956          * Block our timeout handler while we
 957          * add this softc to the dev list.
 958          */
 959         s = splsoftclock();
 960         SLIST_INSERT_HEAD(&softc_list, softc, links);
 961         splx(s);
 962
 963         /*
 964          * The DA driver supports a blocksize, but
 965          * we don't know the blocksize until we do
 966          * a read capacity.  So, set a flag to
 967          * indicate that the blocksize is
 968          * unavailable right now.  We'll clear the
 969          * flag as soon as we've done a read capacity.
 970          */
 971         devstat_add_entry(&softc->device_stats, "da",
 972                           periph->unit_number, 0,
 973                           DEVSTAT_BS_UNAVAILABLE,
 974                           SID_TYPE(&cgd->inq_data) | DEVSTAT_TYPE_IF_SCSI,
 975                           DEVSTAT_PRIORITY_DISK);
 976
 977         /*
 978          * Register this media as a disk
 979          */
 980         disk_create(periph->unit_number, &softc->disk, 0,
 981             &da_cdevsw, &dadisk_cdevsw);
 982
 983         /*
 984          * Add async callbacks for bus reset and
 985          * bus device reset calls.  I don't bother
 986          * checking if this fails as, in most cases,
 987          * the system will function just fine without
 988          * them and the only alternative would be to
 989          * not attach the device on failure.
 990          */
 991         xpt_setup_ccb(&csa.ccb_h, periph->path, /*priority*/5);
 992         csa.ccb_h.func_code = XPT_SASYNC_CB;
 993         csa.event_enable = AC_SENT_BDR | AC_BUS_RESET | AC_LOST_DEVICE;
 994         csa.callback = daasync;
 995         csa.callback_arg = periph;
 996         xpt_action((union ccb *)&csa);
 997         /*
 998          * Lock this peripheral until we are setup.
 999          * This first call can't block
1000          */
1001         (void)cam_periph_lock(periph, PRIBIO);
1002         xpt_schedule(periph, /*priority*/5);
1003
1004         return(CAM_REQ_CMP);
1005 }
1006
1007 static void
1008 dastart(struct cam_periph *periph, union ccb *start_ccb)
1009 {
1010         struct da_softc *softc;
1011
1012         softc = (struct da_softc *)periph->softc;
1013
1014
1015         switch (softc->state) {
1016         case DA_STATE_NORMAL:
1017         {
1018                 /* Pull a buffer from the queue and get going on it */
1019                 struct buf *bp;
1020                 int s;
1021
1022                 /*
1023                  * See if there is a buf with work for us to do..
1024                  */
1025                 s = splbio();
1026                 bp = bufq_first(&softc->buf_queue);
1027                 if (periph->immediate_priority <= periph->pinfo.priority) {
1028                         CAM_DEBUG_PRINT(CAM_DEBUG_SUBTRACE,
1029                                         ("queuing for immediate ccb\n"));
1030                         start_ccb->ccb_h.ccb_state = DA_CCB_WAITING;
1031                         SLIST_INSERT_HEAD(&periph->ccb_list, &start_ccb->ccb_h,
1032                                           periph_links.sle);
1033                         periph->immediate_priority = CAM_PRIORITY_NONE;
1034                         splx(s);
1035                         wakeup(&periph->ccb_list);
1036                 } else if (bp == NULL) {
1037                         splx(s);
1038                         xpt_release_ccb(start_ccb);
1039                 } else {
1040                         int oldspl;
1041                         u_int8_t tag_code;
1042
1043                         bufq_remove(&softc->buf_queue, bp);
1044
1045                         devstat_start_transaction(&softc->device_stats);
1046
1047                         if ((bp->b_flags & B_ORDERED) != 0
1048                          || (softc->flags & DA_FLAG_NEED_OTAG) != 0) {
1049                                 softc->flags &= ~DA_FLAG_NEED_OTAG;
1050                                 softc->ordered_tag_count++;
1051                                 tag_code = MSG_ORDERED_Q_TAG;
1052                         } else {
1053                                 tag_code = MSG_SIMPLE_Q_TAG;
1054                         }
1055                         scsi_read_write(&start_ccb->csio,
1056                                         /*retries*/4,
1057                                         dadone,
1058                                         tag_code,
1059                                         bp->b_iocmd == BIO_READ,
1060                                         /*byte2*/0,
1061                                         softc->minimum_cmd_size,
1062                                         bp->b_pblkno,
1063                                         bp->b_bcount / softc->params.secsize,
1064                                         bp->b_data,
1065                                         bp->b_bcount,
1066                                         /*sense_len*/SSD_FULL_SIZE,
1067                                         DA_DEFAULT_TIMEOUT * 1000);
1068                         start_ccb->ccb_h.ccb_state = DA_CCB_BUFFER_IO;
1069
1070                         /*
1071                          * Block out any asyncronous callbacks
1072                          * while we touch the pending ccb list.
1073                          */
1074                         oldspl = splcam();
1075                         LIST_INSERT_HEAD(&softc->pending_ccbs,
1076                                          &start_ccb->ccb_h, periph_links.le);
1077                         splx(oldspl);
1078
1079                         /* We expect a unit attention from this device */
1080                         if ((softc->flags & DA_FLAG_RETRY_UA) != 0) {
1081                                 start_ccb->ccb_h.ccb_state |= DA_CCB_RETRY_UA;
1082                                 softc->flags &= ~DA_FLAG_RETRY_UA;
1083                         }
1084
1085                         start_ccb->ccb_h.ccb_bp = bp;
1086                         bp = bufq_first(&softc->buf_queue);
1087                         splx(s);
1088
1089                         xpt_action(start_ccb);
1090                 }
1091
1092                 if (bp != NULL) {
1093                         /* Have more work to do, so ensure we stay scheduled */
1094                         xpt_schedule(periph, /* XXX priority */1);
1095                 }
1096                 break;
1097         }
1098         case DA_STATE_PROBE:
1099         {
1100                 struct ccb_scsiio *csio;
1101                 struct scsi_read_capacity_data *rcap;
1102
1103                 rcap = (struct scsi_read_capacity_data *)malloc(sizeof(*rcap),
1104                                                                 M_TEMP,
1105                                                                 M_NOWAIT);
1106                 if (rcap == NULL) {
1107                         printf("dastart: Couldn't malloc read_capacity data\n");
1108                         /* da_free_periph??? */
1109                         break;
1110                 }
1111                 csio = &start_ccb->csio;
1112                 scsi_read_capacity(csio,
1113                                    /*retries*/4,
1114                                    dadone,
1115                                    MSG_SIMPLE_Q_TAG,
1116                                    rcap,
1117                                    SSD_FULL_SIZE,
1118                                    /*timeout*/5000);
1119                 start_ccb->ccb_h.ccb_bp = NULL;
1120                 start_ccb->ccb_h.ccb_state = DA_CCB_PROBE;
1121                 xpt_action(start_ccb);
1122                 break;
1123         }
1124         }
1125 }
1126
1127
1128 static void
1129 dadone(struct cam_periph *periph, union ccb *done_ccb)
1130 {
1131         struct da_softc *softc;
1132         struct ccb_scsiio *csio;
1133
1134         softc = (struct da_softc *)periph->softc;
1135         csio = &done_ccb->csio;
1136         switch (csio->ccb_h.ccb_state & DA_CCB_TYPE_MASK) {
1137         case DA_CCB_BUFFER_IO:
1138         {
1139                 struct buf *bp;
1140                 int    oldspl;
1141
1142                 bp = (struct buf *)done_ccb->ccb_h.ccb_bp;
1143                 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1144                         int error;
1145                         int s;
1146                         int sf;
1147
1148                         if ((csio->ccb_h.ccb_state & DA_CCB_RETRY_UA) != 0)
1149                                 sf = SF_RETRY_UA;
1150                         else
1151                                 sf = 0;
1152
1153                         /* Retry selection timeouts */
1154                         sf |= SF_RETRY_SELTO;
1155
1156                         if ((error = daerror(done_ccb, 0, sf)) == ERESTART) {
1157                                 /*
1158                                  * A retry was scheuled, so
1159                                  * just return.
1160                                  */
1161                                 return;
1162                         }
1163                         if (error != 0) {
1164                                 struct buf *q_bp;
1165
1166                                 s = splbio();
1167
1168                                 if (error == ENXIO) {
1169                                         /*
1170                                          * Catastrophic error.  Mark our pack as
1171                                          * invalid.
1172                                          */
1173                                         /* XXX See if this is really a media
1174                                          *     change first.
1175                                          */
1176                                         xpt_print_path(periph->path);
1177                                         printf("Invalidating pack\n");
1178                                         softc->flags |= DA_FLAG_PACK_INVALID;
1179                                 }
1180
1181                                 /*
1182                                  * return all queued I/O with EIO, so that
1183                                  * the client can retry these I/Os in the
1184                                  * proper order should it attempt to recover.
1185                                  */
1186                                 while ((q_bp = bufq_first(&softc->buf_queue))
1187                                         != NULL) {
1188                                         bufq_remove(&softc->buf_queue, q_bp);
1189                                         q_bp->b_resid = q_bp->b_bcount;
1190                                         q_bp->b_error = EIO;
1191                                         q_bp->b_flags |= B_ERROR;
1192                                         biodone(q_bp);
1193                                 }
1194                                 splx(s);
1195                                 bp->b_error = error;
1196                                 bp->b_resid = bp->b_bcount;
1197                                 bp->b_flags |= B_ERROR;
1198                         } else {
1199                                 bp->b_resid = csio->resid;
1200                                 bp->b_error = 0;
1201                                 if (bp->b_resid != 0) {
1202                                         /* Short transfer ??? */
1203                                         bp->b_flags |= B_ERROR;
1204                                 }
1205                         }
1206                         if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
1207                                 cam_release_devq(done_ccb->ccb_h.path,
1208                                                  /*relsim_flags*/0,
1209                                                  /*reduction*/0,
1210                                                  /*timeout*/0,
1211                                                  /*getcount_only*/0);
1212                 } else {
1213                         bp->b_resid = csio->resid;
1214                         if (csio->resid > 0)
1215                                 bp->b_flags |= B_ERROR;
1216                 }
1217
1218                 /*
1219                  * Block out any asyncronous callbacks
1220                  * while we touch the pending ccb list.
1221                  */
1222                 oldspl = splcam();
1223                 LIST_REMOVE(&done_ccb->ccb_h, periph_links.le);
1224                 splx(oldspl);
1225
1226                 if (softc->device_stats.busy_count == 0)
1227                         softc->flags |= DA_FLAG_WENT_IDLE;
1228
1229                 devstat_end_transaction_buf(&softc->device_stats, bp);
1230                 biodone(bp);
1231                 break;
1232         }
1233         case DA_CCB_PROBE:
1234         {
1235                 struct     scsi_read_capacity_data *rdcap;
1236                 char       announce_buf[80];
1237
1238                 rdcap = (struct scsi_read_capacity_data *)csio->data_ptr;
1239
1240                 if ((csio->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP) {
1241                         struct disk_params *dp;
1242
1243                         dasetgeom(periph, rdcap);
1244                         dp = &softc->params;
1245                         snprintf(announce_buf, sizeof(announce_buf),
1246                                 "%luMB (%u %u byte sectors: %dH %dS/T %dC)",
1247                                 (unsigned long) (((u_int64_t)dp->secsize *
1248                                 dp->sectors) / (1024*1024)), dp->sectors,
1249                                 dp->secsize, dp->heads, dp->secs_per_track,
1250                                 dp->cylinders);
1251                 } else {
1252                         int     error;
1253
1254                         announce_buf[0] = '\0';
1255
1256                         /*
1257                          * Retry any UNIT ATTENTION type errors.  They
1258                          * are expected at boot.
1259                          */
1260                         error = daerror(done_ccb, 0, SF_RETRY_UA |
1261                                         SF_RETRY_SELTO | SF_NO_PRINT);
1262                         if (error == ERESTART) {
1263                                 /*
1264                                  * A retry was scheuled, so
1265                                  * just return.
1266                                  */
1267                                 return;
1268                         } else if (error != 0) {
1269                                 struct scsi_sense_data *sense;
1270                                 int asc, ascq;
1271                                 int sense_key, error_code;
1272                                 int have_sense;
1273                                 cam_status status;
1274                                 struct ccb_getdev cgd;
1275
1276                                 /* Don't wedge this device's queue */
1277                                 cam_release_devq(done_ccb->ccb_h.path,
1278                                                  /*relsim_flags*/0,
1279                                                  /*reduction*/0,
1280                                                  /*timeout*/0,
1281                                                  /*getcount_only*/0);
1282
1283                                 status = done_ccb->ccb_h.status;
1284
1285                                 xpt_setup_ccb(&cgd.ccb_h,
1286                                               done_ccb->ccb_h.path,
1287                                               /* priority */ 1);
1288                                 cgd.ccb_h.func_code = XPT_GDEV_TYPE;
1289                                 xpt_action((union ccb *)&cgd);
1290
1291                                 if (((csio->ccb_h.flags & CAM_SENSE_PHYS) != 0)
1292                                  || ((csio->ccb_h.flags & CAM_SENSE_PTR) != 0)
1293                                  || ((status & CAM_AUTOSNS_VALID) == 0))
1294                                         have_sense = FALSE;
1295                                 else
1296                                         have_sense = TRUE;
1297
1298                                 if (have_sense) {
1299                                         sense = &csio->sense_data;
1300                                         scsi_extract_sense(sense, &error_code,
1301                                                            &sense_key,
1302                                                            &asc, &ascq);
1303                                 }
1304                                 /*
1305                                  * Attach to anything that claims to be a
1306                                  * direct access or optical disk device,
1307                                  * as long as it doesn't return a "Logical
1308                                  * unit not supported" (0x25) error.
1309                                  */
1310                                 if ((have_sense) && (asc != 0x25)
1311                                  && (error_code == SSD_CURRENT_ERROR))
1312                                         snprintf(announce_buf,
1313                                             sizeof(announce_buf),
1314                                                 "Attempt to query device "
1315                                                 "size failed: %s, %s",
1316                                                 scsi_sense_key_text[sense_key],
1317                                                 scsi_sense_desc(asc,ascq,
1318                                                                 &cgd.inq_data));
1319                                 else {
1320                                         if (have_sense)
1321                                                 scsi_sense_print(
1322                                                         &done_ccb->csio);
1323                                         else {
1324                                                 xpt_print_path(periph->path);
1325                                                 printf("got CAM status %#x\n",
1326                                                        done_ccb->ccb_h.status);
1327                                         }
1328
1329                                         xpt_print_path(periph->path);
1330                                         printf("fatal error, failed"
1331                                                " to attach to device\n");
1332
1333                                         /*
1334                                          * Free up resources.
1335                                          */
1336                                         cam_periph_invalidate(periph);
1337                                 }
1338                         }
1339                 }
1340                 free(rdcap, M_TEMP);
1341                 if (announce_buf[0] != '\0')
1342                         xpt_announce_periph(periph, announce_buf);
1343                 softc->state = DA_STATE_NORMAL;
1344                 /*
1345                  * Since our peripheral may be invalidated by an error
1346                  * above or an external event, we must release our CCB
1347                  * before releasing the probe lock on the peripheral.
1348                  * The peripheral will only go away once the last lock
1349                  * is removed, and we need it around for the CCB release
1350                  * operation.
1351                  */
1352                 xpt_release_ccb(done_ccb);
1353                 cam_periph_unlock(periph);
1354                 return;
1355         }
1356         case DA_CCB_WAITING:
1357         {
1358                 /* Caller will release the CCB */
1359                 wakeup(&done_ccb->ccb_h.cbfcnp);
1360                 return;
1361         }
1362         case DA_CCB_DUMP:
1363                 /* No-op.  We're polling */
1364                 return;
1365         default:
1366                 break;
1367         }
1368         xpt_release_ccb(done_ccb);
1369 }
1370
1371 static int
1372 daerror(union ccb *ccb, u_int32_t cam_flags, u_int32_t sense_flags)
1373 {
1374         struct da_softc   *softc;
1375         struct cam_periph *periph;
1376
1377         periph = xpt_path_periph(ccb->ccb_h.path);
1378         softc = (struct da_softc *)periph->softc;
1379
1380         /*
1381          * XXX
1382          * Until we have a better way of doing pack validation,
1383          * don't treat UAs as errors.
1384          */
1385         sense_flags |= SF_RETRY_UA;
1386         return(cam_periph_error(ccb, cam_flags, sense_flags,
1387                                 &softc->saved_ccb));
1388 }
1389
1390 static void
1391 daprevent(struct cam_periph *periph, int action)
1392 {
1393         struct  da_softc *softc;
1394         union   ccb *ccb;
1395         int     error;
1396
1397         softc = (struct da_softc *)periph->softc;
1398
1399         if (((action == PR_ALLOW)
1400           && (softc->flags & DA_FLAG_PACK_LOCKED) == 0)
1401          || ((action == PR_PREVENT)
1402           && (softc->flags & DA_FLAG_PACK_LOCKED) != 0)) {
1403                 return;
1404         }
1405
1406         ccb = cam_periph_getccb(periph, /*priority*/1);
1407
1408         scsi_prevent(&ccb->csio,
1409                      /*retries*/1,
1410                      /*cbcfp*/dadone,
1411                      MSG_SIMPLE_Q_TAG,
1412                      action,
1413                      SSD_FULL_SIZE,
1414                      5000);
1415
1416         error = cam_periph_runccb(ccb, /*error_routine*/NULL, /*cam_flags*/0,
1417                                   /*sense_flags*/0, &softc->device_stats);
1418
1419         if (error == 0) {
1420                 if (action == PR_ALLOW)
1421                         softc->flags &= ~DA_FLAG_PACK_LOCKED;
1422                 else
1423                         softc->flags |= DA_FLAG_PACK_LOCKED;
1424         }
1425
1426         xpt_release_ccb(ccb);
1427 }
1428
1429 static void
1430 dasetgeom(struct cam_periph *periph, struct scsi_read_capacity_data * rdcap)
1431 {
1432         struct ccb_calc_geometry ccg;
1433         struct da_softc *softc;
1434         struct disk_params *dp;
1435
1436         softc = (struct da_softc *)periph->softc;
1437
1438         dp = &softc->params;
1439         dp->secsize = scsi_4btoul(rdcap->length);
1440         dp->sectors = scsi_4btoul(rdcap->addr) + 1;
1441         /*
1442          * Have the controller provide us with a geometry
1443          * for this disk.  The only time the geometry
1444          * matters is when we boot and the controller
1445          * is the only one knowledgeable enough to come
1446          * up with something that will make this a bootable
1447          * device.
1448          */
1449         xpt_setup_ccb(&ccg.ccb_h, periph->path, /*priority*/1);
1450         ccg.ccb_h.func_code = XPT_CALC_GEOMETRY;
1451         ccg.block_size = dp->secsize;
1452         ccg.volume_size = dp->sectors;
1453         ccg.heads = 0;
1454         ccg.secs_per_track = 0;
1455         ccg.cylinders = 0;
1456         xpt_action((union ccb*)&ccg);
1457         dp->heads = ccg.heads;
1458         dp->secs_per_track = ccg.secs_per_track;
1459         dp->cylinders = ccg.cylinders;
1460 }
1461
1462 static void
1463 dasendorderedtag(void *arg)
1464 {
1465         struct da_softc *softc;
1466         int s;
1467
1468         for (softc = SLIST_FIRST(&softc_list);
1469              softc != NULL;
1470              softc = SLIST_NEXT(softc, links)) {
1471                 s = splsoftcam();
1472                 if ((softc->ordered_tag_count == 0)
1473                  && ((softc->flags & DA_FLAG_WENT_IDLE) == 0)) {
1474                         softc->flags |= DA_FLAG_NEED_OTAG;
1475                 }
1476                 if (softc->device_stats.busy_count > 0)
1477                         softc->flags &= ~DA_FLAG_WENT_IDLE;
1478
1479                 softc->ordered_tag_count = 0;
1480                 splx(s);
1481         }
1482         /* Queue us up again */
1483         timeout(dasendorderedtag, NULL,
1484                 (DA_DEFAULT_TIMEOUT * hz) / DA_ORDEREDTAG_INTERVAL);
1485 }
1486
1487 /*
1488  * Step through all DA peripheral drivers, and if the device is still open,
1489  * sync the disk cache to physical media.
1490  */
1491 static void
1492 dashutdown(void * arg, int howto)
1493 {
1494         struct cam_periph *periph;
1495         struct da_softc *softc;
1496
1497         for (periph = TAILQ_FIRST(&dadriver.units); periph != NULL;
1498              periph = TAILQ_NEXT(periph, unit_links)) {
1499                 union ccb ccb;
1500                 softc = (struct da_softc *)periph->softc;
1501
1502                 /*
1503                  * We only sync the cache if the drive is still open, and
1504                  * if the drive is capable of it..
1505                  */
1506                 if (((softc->flags & DA_FLAG_OPEN) == 0)
1507                  || (softc->quirks & DA_Q_NO_SYNC_CACHE))
1508                         continue;
1509
1510                 xpt_setup_ccb(&ccb.ccb_h, periph->path, /*priority*/1);
1511
1512                 ccb.ccb_h.ccb_state = DA_CCB_DUMP;
1513                 scsi_synchronize_cache(&ccb.csio,
1514                                        /*retries*/1,
1515                                        /*cbfcnp*/dadone,
1516                                        MSG_SIMPLE_Q_TAG,
1517                                        /*begin_lba*/0, /* whole disk */
1518                                        /*lb_count*/0,
1519                                        SSD_FULL_SIZE,
1520                                        5 * 60 * 1000);
1521
1522                 xpt_polled_action(&ccb);
1523
1524                 if ((ccb.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1525                         if (((ccb.ccb_h.status & CAM_STATUS_MASK) ==
1526                              CAM_SCSI_STATUS_ERROR)
1527                          && (ccb.csio.scsi_status == SCSI_STATUS_CHECK_COND)){
1528                                 int error_code, sense_key, asc, ascq;
1529
1530                                 scsi_extract_sense(&ccb.csio.sense_data,
1531                                                    &error_code, &sense_key,
1532                                                    &asc, &ascq);
1533
1534                                 if (sense_key != SSD_KEY_ILLEGAL_REQUEST)
1535                                         scsi_sense_print(&ccb.csio);
1536                         } else {
1537                                 xpt_print_path(periph->path);
1538                                 printf("Synchronize cache failed, status "
1539                                        "== 0x%x, scsi status == 0x%x\n",
1540                                        ccb.ccb_h.status, ccb.csio.scsi_status);
1541                         }
1542                 }
1543
1544                 if ((ccb.ccb_h.status & CAM_DEV_QFRZN) != 0)
1545                         cam_release_devq(ccb.ccb_h.path,
1546                                          /*relsim_flags*/0,
1547                                          /*reduction*/0,
1548                                          /*timeout*/0,
1549                                          /*getcount_only*/0);
1550
1551         }
1552 }