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(struct da_softc) links;
 121         LIST_HEAD(, struct 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 };
 131
 132 struct da_quirk_entry {
 133         struct scsi_inquiry_pattern inq_pat;
 134         da_quirks quirks;
 135 };
 136
 137 static struct da_quirk_entry da_quirk_table[] =
 138 {
 139         {
 140                 /*
 141                  * This particular Fujitsu drive doesn't like the
 142                  * synchronize cache command.
 143                  * Reported by: Tom Jackson <toj@gorilla.net>
 144                  */
 145                 {T_DIRECT, SIP_MEDIA_FIXED, "FUJITSU", "M2954*", "*"},
 146                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 147
 148         },
 149         {
 150                 /*
 151                  * This drive doesn't like the synchronize cache command
 152                  * either.  Reported by: Matthew Jacob <mjacob@feral.com>
 153                  * in NetBSD PR kern/6027, August 24, 1998.
 154                  */
 155                 {T_DIRECT, SIP_MEDIA_FIXED, "MICROP", "2217*", "*"},
 156                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 157         },
 158         {
 159                 /*
 160                  * This drive doesn't like the synchronize cache command
 161                  * either.  Reported by: Hellmuth Michaelis (hm@kts.org)
 162                  * (PR 8882).
 163                  */
 164                 {T_DIRECT, SIP_MEDIA_FIXED, "MICROP", "2112*", "*"},
 165                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 166         },
 167         {
 168                 /*
 169                  * Doesn't like the synchronize cache command.
 170                  * Reported by: Blaz Zupan <blaz@gold.amis.net>
 171                  */
 172                 {T_DIRECT, SIP_MEDIA_FIXED, "NEC", "D3847*", "*"},
 173                 /*quirks*/ DA_Q_NO_SYNC_CACHE
 174         },
 175         {
 176                 /*
 177                  * Doesn't work correctly with 6 byte reads/writes.
 178                  * Returns illegal request, and points to byte 9 of the
 179                  * 6-byte CDB.
 180                  * Reported by:  Adam McDougall <bsdx@spawnet.com>
 181                  */
 182                 {T_DIRECT, SIP_MEDIA_FIXED, "QUANTUM", "VIKING 4*", "*"},
 183                 /*quirks*/ DA_Q_NO_6_BYTE
 184         },
 185         {
 186                 /*
 187                  * See above.
 188                  */
 189                 {T_DIRECT, SIP_MEDIA_FIXED, "QUANTUM", "VIKING 2*", "*"},
 190                 /*quirks*/ DA_Q_NO_6_BYTE
 191         },
 192         {
 193                 /*
 194                  * This USB floppy drive uses the UFI command set. This
 195                  * command set is a derivative of the ATAPI command set and
 196                  * does not support READ_6 commands only READ_10. It also does
 197                  * not support sync cache (0x35).
 198                  */
 199                 {T_DIRECT, SIP_MEDIA_REMOVABLE, "Y-E DATA", "USB-FDU", "*"},
 200                 /*quirks*/ DA_Q_NO_6_BYTE|DA_Q_NO_SYNC_CACHE
 201         }
 202 };
 203
 204 static  d_open_t        daopen;
 205 static  d_close_t       daclose;
 206 static  d_strategy_t    dastrategy;
 207 static  d_ioctl_t       daioctl;
 208 static  d_dump_t        dadump;
 209 static  periph_init_t   dainit;
 210 static  void            daasync(void *callback_arg, u_int32_t code,
 211                                 struct cam_path *path, void *arg);
 212 static  periph_ctor_t   daregister;
 213 static  periph_dtor_t   dacleanup;
 214 static  periph_start_t  dastart;
 215 static  periph_oninv_t  daoninvalidate;
 216 static  void            dadone(struct cam_periph *periph,
 217                                union ccb *done_ccb);
 218 static  int             daerror(union ccb *ccb, u_int32_t cam_flags,
 219                                 u_int32_t sense_flags);
 220 static void             daprevent(struct cam_periph *periph, int action);
 221 static void             dasetgeom(struct cam_periph *periph,
 222                                   struct scsi_read_capacity_data * rdcap);
 223 static timeout_t        dasendorderedtag;
 224 static void             dashutdown(void *arg, int howto);
 225
 226 #ifndef DA_DEFAULT_TIMEOUT
 227 #define DA_DEFAULT_TIMEOUT 60   /* Timeout in seconds */
 228 #endif
 229
 230 /*
 231  * DA_ORDEREDTAG_INTERVAL determines how often, relative
 232  * to the default timeout, we check to see whether an ordered
 233  * tagged transaction is appropriate to prevent simple tag
 234  * starvation.  Since we'd like to ensure that there is at least
 235  * 1/2 of the timeout length left for a starved transaction to
 236  * complete after we've sent an ordered tag, we must poll at least
 237  * four times in every timeout period.  This takes care of the worst
 238  * case where a starved transaction starts during an interval that
 239  * meets the requirement "don't send an ordered tag" test so it takes
 240  * us two intervals to determine that a tag must be sent.
 241  */
 242 #ifndef DA_ORDEREDTAG_INTERVAL
 243 #define DA_ORDEREDTAG_INTERVAL 4
 244 #endif
 245
 246 static struct periph_driver dadriver =
 247 {
 248         dainit, "da",
 249         TAILQ_HEAD_INITIALIZER(dadriver.units), /* generation */ 0
 250 };
 251
 252 DATA_SET(periphdriver_set, dadriver);
 253
 254 #define DA_CDEV_MAJOR 13
 255 #define DA_BDEV_MAJOR 4
 256
 257 /* For 2.2-stable support */
 258 #ifndef D_DISK
 259 #define D_DISK 0
 260 #endif
 261
 262 static struct cdevsw da_cdevsw = {
 263         /* open */      daopen,
 264         /* close */     daclose,
 265         /* read */      physread,
 266         /* write */     physwrite,
 267         /* ioctl */     daioctl,
 268         /* poll */      nopoll,
 269         /* mmap */      nommap,
 270         /* strategy */  dastrategy,
 271         /* name */      "da",
 272         /* maj */       DA_CDEV_MAJOR,
 273         /* dump */      dadump,
 274         /* psize */     nopsize,
 275         /* flags */     D_DISK,
 276         /* bmaj */      DA_BDEV_MAJOR
 277 };
 278
 279 static struct cdevsw dadisk_cdevsw;
 280
 281 static SLIST_HEAD(, struct da_softc) softc_list;
 282 static struct extend_array *daperiphs;
 283
 284 static int
 285 daopen(dev_t dev, int flags, int fmt, struct proc *p)
 286 {
 287         struct cam_periph *periph;
 288         struct da_softc *softc;
 289         struct disklabel *label;
 290         int unit;
 291         int part;
 292         int error;
 293         int s;
 294
 295         unit = dkunit(dev);
 296         part = dkpart(dev);
 297         periph = cam_extend_get(daperiphs, unit);
 298         if (periph == NULL)
 299                 return (ENXIO);
 300
 301         softc = (struct da_softc *)periph->softc;
 302
 303         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE,
 304             ("daopen: dev=%s (unit %d , partition %d)\n", devtoname(dev),
 305              unit, part));
 306
 307         if ((error = cam_periph_lock(periph, PRIBIO|PCATCH)) != 0) {
 308                 return (error); /* error code from tsleep */
 309         }
 310
 311         if (cam_periph_acquire(periph) != CAM_REQ_CMP)
 312                 return(ENXIO);
 313         softc->flags |= DA_FLAG_OPEN;
 314
 315         s = splsoftcam();
 316         if ((softc->flags & DA_FLAG_PACK_INVALID) != 0) {
 317                 /* Invalidate our pack information. */
 318                 disk_invalidate(&softc->disk);
 319                 softc->flags &= ~DA_FLAG_PACK_INVALID;
 320         }
 321         splx(s);
 322
 323         /* Do a read capacity */
 324         {
 325                 struct scsi_read_capacity_data *rcap;
 326                 union  ccb *ccb;
 327
 328                 rcap = (struct scsi_read_capacity_data *)malloc(sizeof(*rcap),
 329                                                                 M_TEMP,
 330                                                                 M_WAITOK);
 331
 332                 ccb = cam_periph_getccb(periph, /*priority*/1);
 333                 scsi_read_capacity(&ccb->csio,
 334                                    /*retries*/1,
 335                                    /*cbfncp*/dadone,
 336                                    MSG_SIMPLE_Q_TAG,
 337                                    rcap,
 338                                    SSD_FULL_SIZE,
 339                                    /*timeout*/60000);
 340                 ccb->ccb_h.ccb_bp = NULL;
 341
 342                 error = cam_periph_runccb(ccb, daerror, /*cam_flags*/0,
 343                                           /*sense_flags*/SF_RETRY_UA |
 344                                                          SF_RETRY_SELTO,
 345                                           &softc->device_stats);
 346
 347                 xpt_release_ccb(ccb);
 348
 349                 if (error == 0) {
 350                         dasetgeom(periph, rcap);
 351                 }
 352
 353                 free(rcap, M_TEMP);
 354         }
 355
 356         if (error == 0) {
 357                 struct ccb_getdev cgd;
 358
 359                 /* Build label for whole disk. */
 360                 label = &softc->disk.d_label;
 361                 bzero(label, sizeof(*label));
 362                 label->d_type = DTYPE_SCSI;
 363
 364                 /*
 365                  * Grab the inquiry data to get the vendor and product names.
 366                  * Put them in the typename and packname for the label.
 367                  */
 368                 xpt_setup_ccb(&cgd.ccb_h, periph->path, /*priority*/ 1);
 369                 cgd.ccb_h.func_code = XPT_GDEV_TYPE;
 370                 xpt_action((union ccb *)&cgd);
 371
 372                 strncpy(label->d_typename, cgd.inq_data.vendor,
 373                         min(SID_VENDOR_SIZE, sizeof(label->d_typename)));
 374                 strncpy(label->d_packname, cgd.inq_data.product,
 375                         min(SID_PRODUCT_SIZE, sizeof(label->d_packname)));
 376
 377                 label->d_secsize = softc->params.secsize;
 378                 label->d_nsectors = softc->params.secs_per_track;
 379                 label->d_ntracks = softc->params.heads;
 380                 label->d_ncylinders = softc->params.cylinders;
 381                 label->d_secpercyl = softc->params.heads
 382                                   * softc->params.secs_per_track;
 383                 label->d_secperunit = softc->params.sectors;
 384
 385                 if (((softc->flags & DA_FLAG_PACK_REMOVABLE) != 0)) {
 386                         daprevent(periph, PR_PREVENT);
 387                 }
 388
 389                 /*
 390                  * Check to see whether or not the blocksize is set yet.
 391                  * If it isn't, set it and then clear the blocksize
 392                  * unavailable flag for the device statistics.
 393                  */
 394                 if ((softc->device_stats.flags & DEVSTAT_BS_UNAVAILABLE) != 0){
 395                         softc->device_stats.block_size = softc->params.secsize;
 396                         softc->device_stats.flags &= ~DEVSTAT_BS_UNAVAILABLE;
 397                 }
 398         }
 399
 400         if (error != 0) {
 401                 if ((softc->flags & DA_FLAG_PACK_REMOVABLE) != 0) {
 402                         daprevent(periph, PR_ALLOW);
 403                 }
 404         }
 405         cam_periph_unlock(periph);
 406         return (error);
 407 }
 408
 409 static int
 410 daclose(dev_t dev, int flag, int fmt, struct proc *p)
 411 {
 412         struct  cam_periph *periph;
 413         struct  da_softc *softc;
 414         int     unit;
 415         int     error;
 416
 417         unit = dkunit(dev);
 418         periph = cam_extend_get(daperiphs, unit);
 419         if (periph == NULL)
 420                 return (ENXIO);
 421
 422         softc = (struct da_softc *)periph->softc;
 423
 424         if ((error = cam_periph_lock(periph, PRIBIO)) != 0) {
 425                 return (error); /* error code from tsleep */
 426         }
 427
 428         if ((softc->quirks & DA_Q_NO_SYNC_CACHE) == 0) {
 429                 union   ccb *ccb;
 430
 431                 ccb = cam_periph_getccb(periph, /*priority*/1);
 432
 433                 scsi_synchronize_cache(&ccb->csio,
 434                                        /*retries*/1,
 435                                        /*cbfcnp*/dadone,
 436                                        MSG_SIMPLE_Q_TAG,
 437                                        /*begin_lba*/0,/* Cover the whole disk */
 438                                        /*lb_count*/0,
 439                                        SSD_FULL_SIZE,
 440                                        5 * 60 * 1000);
 441
 442                 cam_periph_runccb(ccb, /*error_routine*/NULL, /*cam_flags*/0,
 443                                   /*sense_flags*/SF_RETRY_UA,
 444                                   &softc->device_stats);
 445
 446                 if ((ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
 447                         if ((ccb->ccb_h.status & CAM_STATUS_MASK) ==
 448                              CAM_SCSI_STATUS_ERROR) {
 449                                 int asc, ascq;
 450                                 int sense_key, error_code;
 451
 452                                 scsi_extract_sense(&ccb->csio.sense_data,
 453                                                    &error_code,
 454                                                    &sense_key,
 455                                                    &asc, &ascq);
 456                                 if (sense_key != SSD_KEY_ILLEGAL_REQUEST)
 457                                         scsi_sense_print(&ccb->csio);
 458                         } else {
 459                                 xpt_print_path(periph->path);
 460                                 printf("Synchronize cache failed, status "
 461                                        "== 0x%x, scsi status == 0x%x\n",
 462                                        ccb->csio.ccb_h.status,
 463                                        ccb->csio.scsi_status);
 464                         }
 465                 }
 466
 467                 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
 468                         cam_release_devq(ccb->ccb_h.path,
 469                                          /*relsim_flags*/0,
 470                                          /*reduction*/0,
 471                                          /*timeout*/0,
 472                                          /*getcount_only*/0);
 473
 474                 xpt_release_ccb(ccb);
 475
 476         }
 477
 478         if ((softc->flags & DA_FLAG_PACK_REMOVABLE) != 0) {
 479                 daprevent(periph, PR_ALLOW);
 480                 /*
 481                  * If we've got removeable media, mark the blocksize as
 482                  * unavailable, since it could change when new media is
 483                  * inserted.
 484                  */
 485                 softc->device_stats.flags |= DEVSTAT_BS_UNAVAILABLE;
 486         }
 487
 488         softc->flags &= ~DA_FLAG_OPEN;
 489         cam_periph_unlock(periph);
 490         cam_periph_release(periph);
 491         return (0);
 492 }
 493
 494 /*
 495  * Actually translate the requested transfer into one the physical driver
 496  * can understand.  The transfer is described by a buf and will include
 497  * only one physical transfer.
 498  */
 499 static void
 500 dastrategy(struct bio *bp)
 501 {
 502         struct cam_periph *periph;
 503         struct da_softc *softc;
 504         u_int  unit;
 505         u_int  part;
 506         int    s;
 507
 508         unit = dkunit(bp->bio_dev);
 509         part = dkpart(bp->bio_dev);
 510         periph = cam_extend_get(daperiphs, unit);
 511         if (periph == NULL) {
 512                 bp->bio_error = ENXIO;
 513                 goto bad;
 514         }
 515         softc = (struct da_softc *)periph->softc;
 516 #if 0
 517         /*
 518          * check it's not too big a transfer for our adapter
 519          */
 520         scsi_minphys(bp,&sd_switch);
 521 #endif
 522
 523         /*
 524          * Mask interrupts so that the pack cannot be invalidated until
 525          * after we are in the queue.  Otherwise, we might not properly
 526          * clean up one of the buffers.
 527          */
 528         s = splbio();
 529
 530         /*
 531          * If the device has been made invalid, error out
 532          */
 533         if ((softc->flags & DA_FLAG_PACK_INVALID)) {
 534                 splx(s);
 535                 bp->bio_error = ENXIO;
 536                 goto bad;
 537         }
 538
 539         /*
 540          * Place it in the queue of disk activities for this disk
 541          */
 542         bioqdisksort(&softc->bio_queue, bp);
 543
 544         splx(s);
 545
 546         /*
 547          * Schedule ourselves for performing the work.
 548          */
 549         xpt_schedule(periph, /* XXX priority */1);
 550
 551         return;
 552 bad:
 553         bp->bio_flags |= BIO_ERROR;
 554
 555         /*
 556          * Correctly set the buf to indicate a completed xfer
 557          */
 558         bp->bio_resid = bp->bio_bcount;
 559         biodone(bp);
 560         return;
 561 }
 562
 563 /* For 2.2-stable support */
 564 #ifndef ENOIOCTL
 565 #define ENOIOCTL -1
 566 #endif
 567
 568 static int
 569 daioctl(dev_t dev, u_long cmd, caddr_t addr, int flag, struct proc *p)
 570 {
 571         struct cam_periph *periph;
 572         struct da_softc *softc;
 573         int unit;
 574         int error;
 575
 576         unit = dkunit(dev);
 577         periph = cam_extend_get(daperiphs, unit);
 578         if (periph == NULL)
 579                 return (ENXIO);
 580
 581         softc = (struct da_softc *)periph->softc;
 582
 583         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("daioctl\n"));
 584
 585         if ((error = cam_periph_lock(periph, PRIBIO|PCATCH)) != 0) {
 586                 return (error); /* error code from tsleep */
 587         }
 588
 589         error = cam_periph_ioctl(periph, cmd, addr, daerror);
 590
 591         cam_periph_unlock(periph);
 592
 593         return (error);
 594 }
 595
 596 static int
 597 dadump(dev_t dev)
 598 {
 599         struct      cam_periph *periph;
 600         struct      da_softc *softc;
 601         u_int       unit;
 602         u_int       part;
 603         u_int       secsize;
 604         u_int       num;        /* number of sectors to write */
 605         u_int       blknum;
 606         long        blkcnt;
 607         vm_offset_t addr;
 608         struct      ccb_scsiio csio;
 609         int         error;
 610
 611         /* toss any characters present prior to dump */
 612         while (cncheckc() != -1)
 613                 ;
 614
 615         unit = dkunit(dev);
 616         part = dkpart(dev);
 617         periph = cam_extend_get(daperiphs, unit);
 618         if (periph == NULL) {
 619                 return (ENXIO);
 620         }
 621         softc = (struct da_softc *)periph->softc;
 622
 623         if ((softc->flags & DA_FLAG_PACK_INVALID) != 0)
 624                 return (ENXIO);
 625
 626         error = disk_dumpcheck(dev, &num, &blknum, &secsize);
 627         if (error)
 628                 return (error);
 629
 630         addr = 0;       /* starting address */
 631         blkcnt = howmany(PAGE_SIZE, secsize);
 632
 633         while (num > 0) {
 634
 635                 if (is_physical_memory(addr)) {
 636                         pmap_kenter((vm_offset_t)CADDR1, trunc_page(addr));
 637                 } else {
 638                         pmap_kenter((vm_offset_t)CADDR1, trunc_page(0));
 639                 }
 640
 641                 xpt_setup_ccb(&csio.ccb_h, periph->path, /*priority*/1);
 642                 csio.ccb_h.ccb_state = DA_CCB_DUMP;
 643                 scsi_read_write(&csio,
 644                                 /*retries*/1,
 645                                 dadone,
 646                                 MSG_ORDERED_Q_TAG,
 647                                 /*read*/FALSE,
 648                                 /*byte2*/0,
 649                                 /*minimum_cmd_size*/ softc->minimum_cmd_size,
 650                                 blknum,
 651                                 blkcnt,
 652                                 /*data_ptr*/CADDR1,
 653                                 /*dxfer_len*/blkcnt * secsize,
 654                                 /*sense_len*/SSD_FULL_SIZE,
 655                                 DA_DEFAULT_TIMEOUT * 1000);
 656                 xpt_polled_action((union ccb *)&csio);
 657
 658                 if ((csio.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
 659                         printf("Aborting dump due to I/O error.\n");
 660                         if ((csio.ccb_h.status & CAM_STATUS_MASK) ==
 661                              CAM_SCSI_STATUS_ERROR)
 662                                 scsi_sense_print(&csio);
 663                         else
 664                                 printf("status == 0x%x, scsi status == 0x%x\n",
 665                                        csio.ccb_h.status, csio.scsi_status);
 666                         return(EIO);
 667                 }
 668
 669                 if (addr % (1024 * 1024) == 0) {
 670 #ifdef  HW_WDOG
 671                         if (wdog_tickler)
 672                                 (*wdog_tickler)();
 673 #endif /* HW_WDOG */
 674                         /* Count in MB of data left to write */
 675                         printf("%d ", (num  * softc->params.secsize)
 676                                      / (1024 * 1024));
 677                 }
 678
 679                 /* update block count */
 680                 num -= blkcnt;
 681                 blknum += blkcnt;
 682                 addr += PAGE_SIZE;
 683
 684                 /* operator aborting dump? */
 685                 if (cncheckc() != -1)
 686                         return (EINTR);
 687         }
 688
 689         /*
 690          * Sync the disk cache contents to the physical media.
 691          */
 692         if ((softc->quirks & DA_Q_NO_SYNC_CACHE) == 0) {
 693
 694                 xpt_setup_ccb(&csio.ccb_h, periph->path, /*priority*/1);
 695                 csio.ccb_h.ccb_state = DA_CCB_DUMP;
 696                 scsi_synchronize_cache(&csio,
 697                                        /*retries*/1,
 698                                        /*cbfcnp*/dadone,
 699                                        MSG_SIMPLE_Q_TAG,
 700                                        /*begin_lba*/0,/* Cover the whole disk */
 701                                        /*lb_count*/0,
 702                                        SSD_FULL_SIZE,
 703                                        5 * 60 * 1000);
 704                 xpt_polled_action((union ccb *)&csio);
 705
 706                 if ((csio.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
 707                         if ((csio.ccb_h.status & CAM_STATUS_MASK) ==
 708                              CAM_SCSI_STATUS_ERROR) {
 709                                 int asc, ascq;
 710                                 int sense_key, error_code;
 711
 712                                 scsi_extract_sense(&csio.sense_data,
 713                                                    &error_code,
 714                                                    &sense_key,
 715                                                    &asc, &ascq);
 716                                 if (sense_key != SSD_KEY_ILLEGAL_REQUEST)
 717                                         scsi_sense_print(&csio);
 718                         } else {
 719                                 xpt_print_path(periph->path);
 720                                 printf("Synchronize cache failed, status "
 721                                        "== 0x%x, scsi status == 0x%x\n",
 722                                        csio.ccb_h.status, csio.scsi_status);
 723                         }
 724                 }
 725         }
 726         return (0);
 727 }
 728
 729 static void
 730 dainit(void)
 731 {
 732         cam_status status;
 733         struct cam_path *path;
 734
 735         /*
 736          * Create our extend array for storing the devices we attach to.
 737          */
 738         daperiphs = cam_extend_new();
 739         SLIST_INIT(&softc_list);
 740         if (daperiphs == NULL) {
 741                 printf("da: Failed to alloc extend array!\n");
 742                 return;
 743         }
 744
 745         /*
 746          * Install a global async callback.  This callback will
 747          * receive async callbacks like "new device found".
 748          */
 749         status = xpt_create_path(&path, /*periph*/NULL, CAM_XPT_PATH_ID,
 750                                  CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD);
 751
 752         if (status == CAM_REQ_CMP) {
 753                 struct ccb_setasync csa;
 754
 755                 xpt_setup_ccb(&csa.ccb_h, path, /*priority*/5);
 756                 csa.ccb_h.func_code = XPT_SASYNC_CB;
 757                 csa.event_enable = AC_FOUND_DEVICE;
 758                 csa.callback = daasync;
 759                 csa.callback_arg = NULL;
 760                 xpt_action((union ccb *)&csa);
 761                 status = csa.ccb_h.status;
 762                 xpt_free_path(path);
 763         }
 764
 765         if (status != CAM_REQ_CMP) {
 766                 printf("da: Failed to attach master async callback "
 767                        "due to status 0x%x!\n", status);
 768         } else {
 769
 770                 /*
 771                  * Schedule a periodic event to occasioanly send an
 772                  * ordered tag to a device.
 773                  */
 774                 timeout(dasendorderedtag, NULL,
 775                         (DA_DEFAULT_TIMEOUT * hz) / DA_ORDEREDTAG_INTERVAL);
 776
 777                 /* Register our shutdown event handler */
 778                 if ((EVENTHANDLER_REGISTER(shutdown_post_sync, dashutdown,
 779                                            NULL, SHUTDOWN_PRI_DEFAULT)) == NULL)
 780                     printf("dainit: shutdown event registration failed!\n");
 781         }
 782 }
 783
 784 static void
 785 daoninvalidate(struct cam_periph *periph)
 786 {
 787         int s;
 788         struct da_softc *softc;
 789         struct bio *q_bp;
 790         struct ccb_setasync csa;
 791
 792         softc = (struct da_softc *)periph->softc;
 793
 794         /*
 795          * De-register any async callbacks.
 796          */
 797         xpt_setup_ccb(&csa.ccb_h, periph->path,
 798                       /* priority */ 5);
 799         csa.ccb_h.func_code = XPT_SASYNC_CB;
 800         csa.event_enable = 0;
 801         csa.callback = daasync;
 802         csa.callback_arg = periph;
 803         xpt_action((union ccb *)&csa);
 804
 805         softc->flags |= DA_FLAG_PACK_INVALID;
 806
 807         /*
 808          * Although the oninvalidate() routines are always called at
 809          * splsoftcam, we need to be at splbio() here to keep the buffer
 810          * queue from being modified while we traverse it.
 811          */
 812         s = splbio();
 813
 814         /*
 815          * Return all queued I/O with ENXIO.
 816          * XXX Handle any transactions queued to the card
 817          *     with XPT_ABORT_CCB.
 818          */
 819         while ((q_bp = bioq_first(&softc->bio_queue)) != NULL){
 820                 bioq_remove(&softc->bio_queue, q_bp);
 821                 q_bp->bio_resid = q_bp->bio_bcount;
 822                 q_bp->bio_error = ENXIO;
 823                 q_bp->bio_flags |= BIO_ERROR;
 824                 biodone(q_bp);
 825         }
 826         splx(s);
 827
 828         SLIST_REMOVE(&softc_list, softc, struct da_softc, links);
 829
 830         xpt_print_path(periph->path);
 831         printf("lost device\n");
 832 }
 833
 834 static void
 835 dacleanup(struct cam_periph *periph)
 836 {
 837         struct da_softc *softc;
 838
 839         softc = (struct da_softc *)periph->softc;
 840
 841         devstat_remove_entry(&softc->device_stats);
 842         cam_extend_release(daperiphs, periph->unit_number);
 843         xpt_print_path(periph->path);
 844         printf("removing device entry\n");
 845         free(softc, M_DEVBUF);
 846 }
 847
 848 static void
 849 daasync(void *callback_arg, u_int32_t code,
 850         struct cam_path *path, void *arg)
 851 {
 852         struct cam_periph *periph;
 853
 854         periph = (struct cam_periph *)callback_arg;
 855         switch (code) {
 856         case AC_FOUND_DEVICE:
 857         {
 858                 struct ccb_getdev *cgd;
 859                 cam_status status;
 860
 861                 cgd = (struct ccb_getdev *)arg;
 862
 863                 if (SID_TYPE(&cgd->inq_data) != T_DIRECT
 864                     && SID_TYPE(&cgd->inq_data) != T_OPTICAL)
 865                         break;
 866
 867                 /*
 868                  * Allocate a peripheral instance for
 869                  * this device and start the probe
 870                  * process.
 871                  */
 872                 status = cam_periph_alloc(daregister, daoninvalidate,
 873                                           dacleanup, dastart,
 874                                           "da", CAM_PERIPH_BIO,
 875                                           cgd->ccb_h.path, daasync,
 876                                           AC_FOUND_DEVICE, cgd);
 877
 878                 if (status != CAM_REQ_CMP
 879                  && status != CAM_REQ_INPROG)
 880                         printf("daasync: Unable to attach to new device "
 881                                 "due to status 0x%x\n", status);
 882                 break;
 883         }
 884         case AC_SENT_BDR:
 885         case AC_BUS_RESET:
 886         {
 887                 struct da_softc *softc;
 888                 struct ccb_hdr *ccbh;
 889                 int s;
 890
 891                 softc = (struct da_softc *)periph->softc;
 892                 s = splsoftcam();
 893                 /*
 894                  * Don't fail on the expected unit attention
 895                  * that will occur.
 896                  */
 897                 softc->flags |= DA_FLAG_RETRY_UA;
 898                 for (ccbh = LIST_FIRST(&softc->pending_ccbs);
 899                      ccbh != NULL; ccbh = LIST_NEXT(ccbh, periph_links.le))
 900                         ccbh->ccb_state |= DA_CCB_RETRY_UA;
 901                 splx(s);
 902                 /* FALLTHROUGH*/
 903         }
 904         default:
 905                 cam_periph_async(periph, code, path, arg);
 906                 break;
 907         }
 908 }
 909
 910 static cam_status
 911 daregister(struct cam_periph *periph, void *arg)
 912 {
 913         int s;
 914         struct da_softc *softc;
 915         struct ccb_setasync csa;
 916         struct ccb_getdev *cgd;
 917         caddr_t match;
 918
 919         cgd = (struct ccb_getdev *)arg;
 920         if (periph == NULL) {
 921                 printf("daregister: periph was NULL!!\n");
 922                 return(CAM_REQ_CMP_ERR);
 923         }
 924
 925         if (cgd == NULL) {
 926                 printf("daregister: no getdev CCB, can't register device\n");
 927                 return(CAM_REQ_CMP_ERR);
 928         }
 929
 930         softc = (struct da_softc *)malloc(sizeof(*softc),M_DEVBUF,M_NOWAIT);
 931
 932         if (softc == NULL) {
 933                 printf("daregister: Unable to probe new device. "
 934                        "Unable to allocate softc\n");
 935                 return(CAM_REQ_CMP_ERR);
 936         }
 937
 938         bzero(softc, sizeof(*softc));
 939         LIST_INIT(&softc->pending_ccbs);
 940         softc->state = DA_STATE_PROBE;
 941         bioq_init(&softc->bio_queue);
 942         if (SID_IS_REMOVABLE(&cgd->inq_data))
 943                 softc->flags |= DA_FLAG_PACK_REMOVABLE;
 944         if ((cgd->inq_data.flags & SID_CmdQue) != 0)
 945                 softc->flags |= DA_FLAG_TAGGED_QUEUING;
 946
 947         periph->softc = softc;
 948
 949         cam_extend_set(daperiphs, periph->unit_number, periph);
 950
 951         /*
 952          * See if this device has any quirks.
 953          */
 954         match = cam_quirkmatch((caddr_t)&cgd->inq_data,
 955                                (caddr_t)da_quirk_table,
 956                                sizeof(da_quirk_table)/sizeof(*da_quirk_table),
 957                                sizeof(*da_quirk_table), scsi_inquiry_match);
 958
 959         if (match != NULL)
 960                 softc->quirks = ((struct da_quirk_entry *)match)->quirks;
 961         else
 962                 softc->quirks = DA_Q_NONE;
 963
 964         if (softc->quirks & DA_Q_NO_6_BYTE)
 965                 softc->minimum_cmd_size = 10;
 966         else
 967                 softc->minimum_cmd_size = 6;
 968
 969         /*
 970          * Block our timeout handler while we
 971          * add this softc to the dev list.
 972          */
 973         s = splsoftclock();
 974         SLIST_INSERT_HEAD(&softc_list, softc, links);
 975         splx(s);
 976
 977         /*
 978          * The DA driver supports a blocksize, but
 979          * we don't know the blocksize until we do
 980          * a read capacity.  So, set a flag to
 981          * indicate that the blocksize is
 982          * unavailable right now.  We'll clear the
 983          * flag as soon as we've done a read capacity.
 984          */
 985         devstat_add_entry(&softc->device_stats, "da",
 986                           periph->unit_number, 0,
 987                           DEVSTAT_BS_UNAVAILABLE,
 988                           SID_TYPE(&cgd->inq_data) | DEVSTAT_TYPE_IF_SCSI,
 989                           DEVSTAT_PRIORITY_DISK);
 990
 991         /*
 992          * Register this media as a disk
 993          */
 994         disk_create(periph->unit_number, &softc->disk, 0,
 995             &da_cdevsw, &dadisk_cdevsw);
 996
 997         /*
 998          * Add async callbacks for bus reset and
 999          * bus device reset calls.  I don't bother
1000          * checking if this fails as, in most cases,
1001          * the system will function just fine without
1002          * them and the only alternative would be to
1003          * not attach the device on failure.
1004          */
1005         xpt_setup_ccb(&csa.ccb_h, periph->path, /*priority*/5);
1006         csa.ccb_h.func_code = XPT_SASYNC_CB;
1007         csa.event_enable = AC_SENT_BDR | AC_BUS_RESET | AC_LOST_DEVICE;
1008         csa.callback = daasync;
1009         csa.callback_arg = periph;
1010         xpt_action((union ccb *)&csa);
1011         /*
1012          * Lock this peripheral until we are setup.
1013          * This first call can't block
1014          */
1015         (void)cam_periph_lock(periph, PRIBIO);
1016         xpt_schedule(periph, /*priority*/5);
1017
1018         return(CAM_REQ_CMP);
1019 }
1020
1021 static void
1022 dastart(struct cam_periph *periph, union ccb *start_ccb)
1023 {
1024         struct da_softc *softc;
1025
1026         softc = (struct da_softc *)periph->softc;
1027
1028
1029         switch (softc->state) {
1030         case DA_STATE_NORMAL:
1031         {
1032                 /* Pull a buffer from the queue and get going on it */
1033                 struct bio *bp;
1034                 int s;
1035
1036                 /*
1037                  * See if there is a buf with work for us to do..
1038                  */
1039                 s = splbio();
1040                 bp = bioq_first(&softc->bio_queue);
1041                 if (periph->immediate_priority <= periph->pinfo.priority) {
1042                         CAM_DEBUG_PRINT(CAM_DEBUG_SUBTRACE,
1043                                         ("queuing for immediate ccb\n"));
1044                         start_ccb->ccb_h.ccb_state = DA_CCB_WAITING;
1045                         SLIST_INSERT_HEAD(&periph->ccb_list, &start_ccb->ccb_h,
1046                                           periph_links.sle);
1047                         periph->immediate_priority = CAM_PRIORITY_NONE;
1048                         splx(s);
1049                         wakeup(&periph->ccb_list);
1050                 } else if (bp == NULL) {
1051                         splx(s);
1052                         xpt_release_ccb(start_ccb);
1053                 } else {
1054                         int oldspl;
1055                         u_int8_t tag_code;
1056
1057                         bioq_remove(&softc->bio_queue, bp);
1058
1059                         devstat_start_transaction(&softc->device_stats);
1060
1061                         if ((bp->bio_flags & BIO_ORDERED) != 0
1062                          || (softc->flags & DA_FLAG_NEED_OTAG) != 0) {
1063                                 softc->flags &= ~DA_FLAG_NEED_OTAG;
1064                                 softc->ordered_tag_count++;
1065                                 tag_code = MSG_ORDERED_Q_TAG;
1066                         } else {
1067                                 tag_code = MSG_SIMPLE_Q_TAG;
1068                         }
1069                         scsi_read_write(&start_ccb->csio,
1070                                         /*retries*/4,
1071                                         dadone,
1072                                         tag_code,
1073                                         bp->bio_cmd == BIO_READ,
1074                                         /*byte2*/0,
1075                                         softc->minimum_cmd_size,
1076                                         bp->bio_pblkno,
1077                                         bp->bio_bcount / softc->params.secsize,
1078                                         bp->bio_data,
1079                                         bp->bio_bcount,
1080                                         /*sense_len*/SSD_FULL_SIZE,
1081                                         DA_DEFAULT_TIMEOUT * 1000);
1082                         start_ccb->ccb_h.ccb_state = DA_CCB_BUFFER_IO;
1083
1084                         /*
1085                          * Block out any asyncronous callbacks
1086                          * while we touch the pending ccb list.
1087                          */
1088                         oldspl = splcam();
1089                         LIST_INSERT_HEAD(&softc->pending_ccbs,
1090                                          &start_ccb->ccb_h, periph_links.le);
1091                         splx(oldspl);
1092
1093                         /* We expect a unit attention from this device */
1094                         if ((softc->flags & DA_FLAG_RETRY_UA) != 0) {
1095                                 start_ccb->ccb_h.ccb_state |= DA_CCB_RETRY_UA;
1096                                 softc->flags &= ~DA_FLAG_RETRY_UA;
1097                         }
1098
1099                         start_ccb->ccb_h.ccb_bp = bp;
1100                         bp = bioq_first(&softc->bio_queue);
1101                         splx(s);
1102
1103                         xpt_action(start_ccb);
1104                 }
1105
1106                 if (bp != NULL) {
1107                         /* Have more work to do, so ensure we stay scheduled */
1108                         xpt_schedule(periph, /* XXX priority */1);
1109                 }
1110                 break;
1111         }
1112         case DA_STATE_PROBE:
1113         {
1114                 struct ccb_scsiio *csio;
1115                 struct scsi_read_capacity_data *rcap;
1116
1117                 rcap = (struct scsi_read_capacity_data *)malloc(sizeof(*rcap),
1118                                                                 M_TEMP,
1119                                                                 M_NOWAIT);
1120                 if (rcap == NULL) {
1121                         printf("dastart: Couldn't malloc read_capacity data\n");
1122                         /* da_free_periph??? */
1123                         break;
1124                 }
1125                 csio = &start_ccb->csio;
1126                 scsi_read_capacity(csio,
1127                                    /*retries*/4,
1128                                    dadone,
1129                                    MSG_SIMPLE_Q_TAG,
1130                                    rcap,
1131                                    SSD_FULL_SIZE,
1132                                    /*timeout*/5000);
1133                 start_ccb->ccb_h.ccb_bp = NULL;
1134                 start_ccb->ccb_h.ccb_state = DA_CCB_PROBE;
1135                 xpt_action(start_ccb);
1136                 break;
1137         }
1138         }
1139 }
1140
1141
1142 static void
1143 dadone(struct cam_periph *periph, union ccb *done_ccb)
1144 {
1145         struct da_softc *softc;
1146         struct ccb_scsiio *csio;
1147
1148         softc = (struct da_softc *)periph->softc;
1149         csio = &done_ccb->csio;
1150         switch (csio->ccb_h.ccb_state & DA_CCB_TYPE_MASK) {
1151         case DA_CCB_BUFFER_IO:
1152         {
1153                 struct bio *bp;
1154                 int    oldspl;
1155
1156                 bp = (struct bio *)done_ccb->ccb_h.ccb_bp;
1157                 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1158                         int error;
1159                         int s;
1160                         int sf;
1161
1162                         if ((csio->ccb_h.ccb_state & DA_CCB_RETRY_UA) != 0)
1163                                 sf = SF_RETRY_UA;
1164                         else
1165                                 sf = 0;
1166
1167                         /* Retry selection timeouts */
1168                         sf |= SF_RETRY_SELTO;
1169
1170                         if ((error = daerror(done_ccb, 0, sf)) == ERESTART) {
1171                                 /*
1172                                  * A retry was scheuled, so
1173                                  * just return.
1174                                  */
1175                                 return;
1176                         }
1177                         if (error != 0) {
1178                                 struct bio *q_bp;
1179
1180                                 s = splbio();
1181
1182                                 if (error == ENXIO) {
1183                                         /*
1184                                          * Catastrophic error.  Mark our pack as
1185                                          * invalid.
1186                                          */
1187                                         /* XXX See if this is really a media
1188                                          *     change first.
1189                                          */
1190                                         xpt_print_path(periph->path);
1191                                         printf("Invalidating pack\n");
1192                                         softc->flags |= DA_FLAG_PACK_INVALID;
1193                                 }
1194
1195                                 /*
1196                                  * return all queued I/O with EIO, so that
1197                                  * the client can retry these I/Os in the
1198                                  * proper order should it attempt to recover.
1199                                  */
1200                                 while ((q_bp = bioq_first(&softc->bio_queue))
1201                                         != NULL) {
1202                                         bioq_remove(&softc->bio_queue, q_bp);
1203                                         q_bp->bio_resid = q_bp->bio_bcount;
1204                                         q_bp->bio_error = EIO;
1205                                         q_bp->bio_flags |= BIO_ERROR;
1206                                         biodone(q_bp);
1207                                 }
1208                                 splx(s);
1209                                 bp->bio_error = error;
1210                                 bp->bio_resid = bp->bio_bcount;
1211                                 bp->bio_flags |= BIO_ERROR;
1212                         } else {
1213                                 bp->bio_resid = csio->resid;
1214                                 bp->bio_error = 0;
1215                                 if (bp->bio_resid != 0) {
1216                                         /* Short transfer ??? */
1217                                         bp->bio_flags |= BIO_ERROR;
1218                                 }
1219                         }
1220                         if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
1221                                 cam_release_devq(done_ccb->ccb_h.path,
1222                                                  /*relsim_flags*/0,
1223                                                  /*reduction*/0,
1224                                                  /*timeout*/0,
1225                                                  /*getcount_only*/0);
1226                 } else {
1227                         bp->bio_resid = csio->resid;
1228                         if (csio->resid > 0)
1229                                 bp->bio_flags |= BIO_ERROR;
1230                 }
1231
1232                 /*
1233                  * Block out any asyncronous callbacks
1234                  * while we touch the pending ccb list.
1235                  */
1236                 oldspl = splcam();
1237                 LIST_REMOVE(&done_ccb->ccb_h, periph_links.le);
1238                 splx(oldspl);
1239
1240                 if (softc->device_stats.busy_count == 0)
1241                         softc->flags |= DA_FLAG_WENT_IDLE;
1242
1243                 devstat_end_transaction_bio(&softc->device_stats, bp);
1244                 biodone(bp);
1245                 break;
1246         }
1247         case DA_CCB_PROBE:
1248         {
1249                 struct     scsi_read_capacity_data *rdcap;
1250                 char       announce_buf[80];
1251
1252                 rdcap = (struct scsi_read_capacity_data *)csio->data_ptr;
1253
1254                 if ((csio->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP) {
1255                         struct disk_params *dp;
1256
1257                         dasetgeom(periph, rdcap);
1258                         dp = &softc->params;
1259                         snprintf(announce_buf, sizeof(announce_buf),
1260                                 "%luMB (%u %u byte sectors: %dH %dS/T %dC)",
1261                                 (unsigned long) (((u_int64_t)dp->secsize *
1262                                 dp->sectors) / (1024*1024)), dp->sectors,
1263                                 dp->secsize, dp->heads, dp->secs_per_track,
1264                                 dp->cylinders);
1265                 } else {
1266                         int     error;
1267
1268                         announce_buf[0] = '\0';
1269
1270                         /*
1271                          * Retry any UNIT ATTENTION type errors.  They
1272                          * are expected at boot.
1273                          */
1274                         error = daerror(done_ccb, 0, SF_RETRY_UA |
1275                                         SF_RETRY_SELTO | SF_NO_PRINT);
1276                         if (error == ERESTART) {
1277                                 /*
1278                                  * A retry was scheuled, so
1279                                  * just return.
1280                                  */
1281                                 return;
1282                         } else if (error != 0) {
1283                                 struct scsi_sense_data *sense;
1284                                 int asc, ascq;
1285                                 int sense_key, error_code;
1286                                 int have_sense;
1287                                 cam_status status;
1288                                 struct ccb_getdev cgd;
1289
1290                                 /* Don't wedge this device's queue */
1291                                 cam_release_devq(done_ccb->ccb_h.path,
1292                                                  /*relsim_flags*/0,
1293                                                  /*reduction*/0,
1294                                                  /*timeout*/0,
1295                                                  /*getcount_only*/0);
1296
1297                                 status = done_ccb->ccb_h.status;
1298
1299                                 xpt_setup_ccb(&cgd.ccb_h,
1300                                               done_ccb->ccb_h.path,
1301                                               /* priority */ 1);
1302                                 cgd.ccb_h.func_code = XPT_GDEV_TYPE;
1303                                 xpt_action((union ccb *)&cgd);
1304
1305                                 if (((csio->ccb_h.flags & CAM_SENSE_PHYS) != 0)
1306                                  || ((csio->ccb_h.flags & CAM_SENSE_PTR) != 0)
1307                                  || ((status & CAM_AUTOSNS_VALID) == 0))
1308                                         have_sense = FALSE;
1309                                 else
1310                                         have_sense = TRUE;
1311
1312                                 if (have_sense) {
1313                                         sense = &csio->sense_data;
1314                                         scsi_extract_sense(sense, &error_code,
1315                                                            &sense_key,
1316                                                            &asc, &ascq);
1317                                 }
1318                                 /*
1319                                  * Attach to anything that claims to be a
1320                                  * direct access or optical disk device,
1321                                  * as long as it doesn't return a "Logical
1322                                  * unit not supported" (0x25) error.
1323                                  */
1324                                 if ((have_sense) && (asc != 0x25)
1325                                  && (error_code == SSD_CURRENT_ERROR))
1326                                         snprintf(announce_buf,
1327                                             sizeof(announce_buf),
1328                                                 "Attempt to query device "
1329                                                 "size failed: %s, %s",
1330                                                 scsi_sense_key_text[sense_key],
1331                                                 scsi_sense_desc(asc,ascq,
1332                                                                 &cgd.inq_data));
1333                                 else {
1334                                         if (have_sense)
1335                                                 scsi_sense_print(
1336                                                         &done_ccb->csio);
1337                                         else {
1338                                                 xpt_print_path(periph->path);
1339                                                 printf("got CAM status %#x\n",
1340                                                        done_ccb->ccb_h.status);
1341                                         }
1342
1343                                         xpt_print_path(periph->path);
1344                                         printf("fatal error, failed"
1345                                                " to attach to device\n");
1346
1347                                         /*
1348                                          * Free up resources.
1349                                          */
1350                                         cam_periph_invalidate(periph);
1351                                 }
1352                         }
1353                 }
1354                 free(rdcap, M_TEMP);
1355                 if (announce_buf[0] != '\0')
1356                         xpt_announce_periph(periph, announce_buf);
1357                 softc->state = DA_STATE_NORMAL;
1358                 /*
1359                  * Since our peripheral may be invalidated by an error
1360                  * above or an external event, we must release our CCB
1361                  * before releasing the probe lock on the peripheral.
1362                  * The peripheral will only go away once the last lock
1363                  * is removed, and we need it around for the CCB release
1364                  * operation.
1365                  */
1366                 xpt_release_ccb(done_ccb);
1367                 cam_periph_unlock(periph);
1368                 return;
1369         }
1370         case DA_CCB_WAITING:
1371         {
1372                 /* Caller will release the CCB */
1373                 wakeup(&done_ccb->ccb_h.cbfcnp);
1374                 return;
1375         }
1376         case DA_CCB_DUMP:
1377                 /* No-op.  We're polling */
1378                 return;
1379         default:
1380                 break;
1381         }
1382         xpt_release_ccb(done_ccb);
1383 }
1384
1385 static int
1386 daerror(union ccb *ccb, u_int32_t cam_flags, u_int32_t sense_flags)
1387 {
1388         struct da_softc   *softc;
1389         struct cam_periph *periph;
1390
1391         periph = xpt_path_periph(ccb->ccb_h.path);
1392         softc = (struct da_softc *)periph->softc;
1393
1394         /*
1395          * XXX
1396          * Until we have a better way of doing pack validation,
1397          * don't treat UAs as errors.
1398          */
1399         sense_flags |= SF_RETRY_UA;
1400         return(cam_periph_error(ccb, cam_flags, sense_flags,
1401                                 &softc->saved_ccb));
1402 }
1403
1404 static void
1405 daprevent(struct cam_periph *periph, int action)
1406 {
1407         struct  da_softc *softc;
1408         union   ccb *ccb;
1409         int     error;
1410
1411         softc = (struct da_softc *)periph->softc;
1412
1413         if (((action == PR_ALLOW)
1414           && (softc->flags & DA_FLAG_PACK_LOCKED) == 0)
1415          || ((action == PR_PREVENT)
1416           && (softc->flags & DA_FLAG_PACK_LOCKED) != 0)) {
1417                 return;
1418         }
1419
1420         ccb = cam_periph_getccb(periph, /*priority*/1);
1421
1422         scsi_prevent(&ccb->csio,
1423                      /*retries*/1,
1424                      /*cbcfp*/dadone,
1425                      MSG_SIMPLE_Q_TAG,
1426                      action,
1427                      SSD_FULL_SIZE,
1428                      5000);
1429
1430         error = cam_periph_runccb(ccb, /*error_routine*/NULL, /*cam_flags*/0,
1431                                   /*sense_flags*/0, &softc->device_stats);
1432
1433         if (error == 0) {
1434                 if (action == PR_ALLOW)
1435                         softc->flags &= ~DA_FLAG_PACK_LOCKED;
1436                 else
1437                         softc->flags |= DA_FLAG_PACK_LOCKED;
1438         }
1439
1440         xpt_release_ccb(ccb);
1441 }
1442
1443 static void
1444 dasetgeom(struct cam_periph *periph, struct scsi_read_capacity_data * rdcap)
1445 {
1446         struct ccb_calc_geometry ccg;
1447         struct da_softc *softc;
1448         struct disk_params *dp;
1449
1450         softc = (struct da_softc *)periph->softc;
1451
1452         dp = &softc->params;
1453         dp->secsize = scsi_4btoul(rdcap->length);
1454         dp->sectors = scsi_4btoul(rdcap->addr) + 1;
1455         /*
1456          * Have the controller provide us with a geometry
1457          * for this disk.  The only time the geometry
1458          * matters is when we boot and the controller
1459          * is the only one knowledgeable enough to come
1460          * up with something that will make this a bootable
1461          * device.
1462          */
1463         xpt_setup_ccb(&ccg.ccb_h, periph->path, /*priority*/1);
1464         ccg.ccb_h.func_code = XPT_CALC_GEOMETRY;
1465         ccg.block_size = dp->secsize;
1466         ccg.volume_size = dp->sectors;
1467         ccg.heads = 0;
1468         ccg.secs_per_track = 0;
1469         ccg.cylinders = 0;
1470         xpt_action((union ccb*)&ccg);
1471         dp->heads = ccg.heads;
1472         dp->secs_per_track = ccg.secs_per_track;
1473         dp->cylinders = ccg.cylinders;
1474 }
1475
1476 static void
1477 dasendorderedtag(void *arg)
1478 {
1479         struct da_softc *softc;
1480         int s;
1481
1482         for (softc = SLIST_FIRST(&softc_list);
1483              softc != NULL;
1484              softc = SLIST_NEXT(softc, links)) {
1485                 s = splsoftcam();
1486                 if ((softc->ordered_tag_count == 0)
1487                  && ((softc->flags & DA_FLAG_WENT_IDLE) == 0)) {
1488                         softc->flags |= DA_FLAG_NEED_OTAG;
1489                 }
1490                 if (softc->device_stats.busy_count > 0)
1491                         softc->flags &= ~DA_FLAG_WENT_IDLE;
1492
1493                 softc->ordered_tag_count = 0;
1494                 splx(s);
1495         }
1496         /* Queue us up again */
1497         timeout(dasendorderedtag, NULL,
1498                 (DA_DEFAULT_TIMEOUT * hz) / DA_ORDEREDTAG_INTERVAL);
1499 }
1500
1501 /*
1502  * Step through all DA peripheral drivers, and if the device is still open,
1503  * sync the disk cache to physical media.
1504  */
1505 static void
1506 dashutdown(void * arg, int howto)
1507 {
1508         struct cam_periph *periph;
1509         struct da_softc *softc;
1510
1511         for (periph = TAILQ_FIRST(&dadriver.units); periph != NULL;
1512              periph = TAILQ_NEXT(periph, unit_links)) {
1513                 union ccb ccb;
1514                 softc = (struct da_softc *)periph->softc;
1515
1516                 /*
1517                  * We only sync the cache if the drive is still open, and
1518                  * if the drive is capable of it..
1519                  */
1520                 if (((softc->flags & DA_FLAG_OPEN) == 0)
1521                  || (softc->quirks & DA_Q_NO_SYNC_CACHE))
1522                         continue;
1523
1524                 xpt_setup_ccb(&ccb.ccb_h, periph->path, /*priority*/1);
1525
1526                 ccb.ccb_h.ccb_state = DA_CCB_DUMP;
1527                 scsi_synchronize_cache(&ccb.csio,
1528                                        /*retries*/1,
1529                                        /*cbfcnp*/dadone,
1530                                        MSG_SIMPLE_Q_TAG,
1531                                        /*begin_lba*/0, /* whole disk */
1532                                        /*lb_count*/0,
1533                                        SSD_FULL_SIZE,
1534                                        5 * 60 * 1000);
1535
1536                 xpt_polled_action(&ccb);
1537
1538                 if ((ccb.ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1539                         if (((ccb.ccb_h.status & CAM_STATUS_MASK) ==
1540                              CAM_SCSI_STATUS_ERROR)
1541                          && (ccb.csio.scsi_status == SCSI_STATUS_CHECK_COND)){
1542                                 int error_code, sense_key, asc, ascq;
1543
1544                                 scsi_extract_sense(&ccb.csio.sense_data,
1545                                                    &error_code, &sense_key,
1546                                                    &asc, &ascq);
1547
1548                                 if (sense_key != SSD_KEY_ILLEGAL_REQUEST)
1549                                         scsi_sense_print(&ccb.csio);
1550                         } else {
1551                                 xpt_print_path(periph->path);
1552                                 printf("Synchronize cache failed, status "
1553                                        "== 0x%x, scsi status == 0x%x\n",
1554                                        ccb.ccb_h.status, ccb.csio.scsi_status);
1555                         }
1556                 }
1557
1558                 if ((ccb.ccb_h.status & CAM_DEV_QFRZN) != 0)
1559                         cam_release_devq(ccb.ccb_h.path,
1560                                          /*relsim_flags*/0,
1561                                          /*reduction*/0,
1562                                          /*timeout*/0,
1563                                          /*getcount_only*/0);
1564
1565         }
1566 }
1567
1568 #else /* !_KERNEL */
1569
1570 /*
1571  * XXX This is only left out of the kernel build to silence warnings.  If,
1572  * for some reason this function is used in the kernel, the ifdefs should
1573  * be moved so it is included both in the kernel and userland.
1574  */
1575 void
1576 scsi_format_unit(struct ccb_scsiio *csio, u_int32_t retries,
1577                  void (*cbfcnp)(struct cam_periph *, union ccb *),
1578                  u_int8_t tag_action, u_int8_t byte2, u_int16_t ileave,
1579                  u_int8_t *data_ptr, u_int32_t dxfer_len, u_int8_t sense_len,
1580                  u_int32_t timeout)
1581 {
1582         struct scsi_format_unit *scsi_cmd;
1583
1584         scsi_cmd = (struct scsi_format_unit *)&csio->cdb_io.cdb_bytes;
1585         scsi_cmd->opcode = FORMAT_UNIT;
1586         scsi_cmd->byte2 = byte2;
1587         scsi_ulto2b(ileave, scsi_cmd->interleave);
1588
1589         cam_fill_csio(csio,
1590                       retries,
1591                       cbfcnp,
1592                       /*flags*/ (dxfer_len > 0) ? CAM_DIR_OUT : CAM_DIR_NONE,
1593                       tag_action,
1594                       data_ptr,
1595                       dxfer_len,
1596                       sense_len,
1597                       sizeof(*scsi_cmd),
1598                       timeout);
1599 }
1600
1601 #endif /* _KERNEL */