sys/bus/cam/scsi/scsi_cd.c

   1 /*
   2  * Copyright (c) 1997 Justin T. Gibbs.
   3  * Copyright (c) 1997, 1998, 1999, 2000, 2001, 2003, 2003 Kenneth D. Merry.
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions, and the following disclaimer,
  11  *    without modification, immediately at the beginning of the file.
  12  * 2. The name of the author may not be used to endorse or promote products
  13  *    derived from this software without specific prior written permission.
  14  *
  15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  16  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  17  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  18  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
  19  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  20  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  21  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  23  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  25  * SUCH DAMAGE.
  26  *
  27  * $FreeBSD: src/sys/cam/scsi/scsi_cd.c,v 1.31.2.16 2003/10/21 22:26:11 thomas Exp $
  28  * $DragonFly: src/sys/bus/cam/scsi/scsi_cd.c,v 1.22 2006/04/30 17:22:15 dillon Exp $
  29  */
  30 /*
  31  * Portions of this driver taken from the original FreeBSD cd driver.
  32  * Written by Julian Elischer (julian@tfs.com)
  33  * for TRW Financial Systems for use under the MACH(2.5) operating system.
  34  *
  35  * TRW Financial Systems, in accordance with their agreement with Carnegie
  36  * Mellon University, makes this software available to CMU to distribute
  37  * or use in any manner that they see fit as long as this message is kept with
  38  * the software. For this reason TFS also grants any other persons or
  39  * organisations permission to use or modify this software.
  40  *
  41  * TFS supplies this software to be publicly redistributed
  42  * on the understanding that TFS is not responsible for the correct
  43  * functioning of this software in any circumstances.
  44  *
  45  * Ported to run under 386BSD by Julian Elischer (julian@tfs.com) Sept 1992
  46  *
  47  *      from: cd.c,v 1.83 1997/05/04 15:24:22 joerg Exp $
  48  */
  49
  50 #include "opt_cd.h"
  51
  52 #include <sys/param.h>
  53 #include <sys/bootmaj.h>
  54 #include <sys/systm.h>
  55 #include <sys/kernel.h>
  56 #include <sys/buf.h>
  57 #include <sys/conf.h>
  58 #include <sys/disk.h>
  59 #include <sys/malloc.h>
  60 #include <sys/cdio.h>
  61 #include <sys/cdrio.h>
  62 #include <sys/dvdio.h>
  63 #include <sys/devicestat.h>
  64 #include <sys/sysctl.h>
  65 #include <sys/taskqueue.h>
  66 #include <sys/proc.h>
  67 #include <sys/buf2.h>
  68 #include <sys/thread2.h>
  69
  70 #include "../cam.h"
  71 #include "../cam_ccb.h"
  72 #include "../cam_extend.h"
  73 #include "../cam_periph.h"
  74 #include "../cam_xpt_periph.h"
  75 #include "../cam_queue.h"
  76
  77 #include "scsi_message.h"
  78 #include "scsi_da.h"
  79 #include "scsi_cd.h"
  80
  81 #define LEADOUT         0xaa            /* leadout toc entry */
  82
  83 struct cd_params {
  84         u_int32_t blksize;
  85         u_long    disksize;
  86 };
  87
  88 typedef enum {
  89         CD_Q_NONE               = 0x00,
  90         CD_Q_NO_TOUCH           = 0x01,
  91         CD_Q_BCD_TRACKS         = 0x02,
  92         CD_Q_NO_CHANGER         = 0x04,
  93         CD_Q_CHANGER            = 0x08,
  94         CD_Q_10_BYTE_ONLY       = 0x10
  95 } cd_quirks;
  96
  97 typedef enum {
  98         CD_FLAG_INVALID         = 0x0001,
  99         CD_FLAG_NEW_DISC        = 0x0002,
 100         CD_FLAG_DISC_LOCKED     = 0x0004,
 101         CD_FLAG_DISC_REMOVABLE  = 0x0008,
 102         CD_FLAG_TAGGED_QUEUING  = 0x0010,
 103         CD_FLAG_CHANGER         = 0x0040,
 104         CD_FLAG_ACTIVE          = 0x0080,
 105         CD_FLAG_SCHED_ON_COMP   = 0x0100,
 106         CD_FLAG_RETRY_UA        = 0x0200,
 107         CD_FLAG_VALID_MEDIA     = 0x0400,
 108         CD_FLAG_VALID_TOC       = 0x0800,
 109         CD_FLAG_OPEN            = 0x1000,
 110         CD_FLAG_SCTX_INIT       = 0x2000
 111 } cd_flags;
 112
 113 typedef enum {
 114         CD_CCB_PROBE            = 0x01,
 115         CD_CCB_BUFFER_IO        = 0x02,
 116         CD_CCB_WAITING          = 0x03,
 117         CD_CCB_TYPE_MASK        = 0x0F,
 118         CD_CCB_RETRY_UA         = 0x10
 119 } cd_ccb_state;
 120
 121 typedef enum {
 122         CHANGER_TIMEOUT_SCHED           = 0x01,
 123         CHANGER_SHORT_TMOUT_SCHED       = 0x02,
 124         CHANGER_MANUAL_CALL             = 0x04,
 125         CHANGER_NEED_TIMEOUT            = 0x08
 126 } cd_changer_flags;
 127
 128 #define ccb_state ppriv_field0
 129 #define ccb_bio ppriv_ptr1
 130
 131 struct cd_tocdata {
 132         struct ioc_toc_header header;
 133         struct cd_toc_entry entries[100];
 134 };
 135
 136 struct cd_toc_single {
 137         struct ioc_toc_header header;
 138         struct cd_toc_entry entry;
 139 };
 140
 141 typedef enum {
 142         CD_STATE_PROBE,
 143         CD_STATE_NORMAL
 144 } cd_state;
 145
 146 struct cd_softc {
 147         cam_pinfo               pinfo;
 148         cd_state                state;
 149         volatile cd_flags       flags;
 150         struct bio_queue_head   bio_queue;
 151         LIST_HEAD(, ccb_hdr)    pending_ccbs;
 152         struct cd_params        params;
 153         struct disk             disk;
 154         union ccb               saved_ccb;
 155         cd_quirks               quirks;
 156         struct devstat          device_stats;
 157         STAILQ_ENTRY(cd_softc)  changer_links;
 158         struct cdchanger        *changer;
 159         int                     bufs_left;
 160         struct cam_periph       *periph;
 161         int                     minimum_command_size;
 162         struct task             sysctl_task;
 163         struct sysctl_ctx_list  sysctl_ctx;
 164         struct sysctl_oid       *sysctl_tree;
 165         STAILQ_HEAD(, cd_mode_params)   mode_queue;
 166         struct cd_tocdata       toc;
 167 };
 168
 169 struct cd_page_sizes {
 170         int page;
 171         int page_size;
 172 };
 173
 174 static struct cd_page_sizes cd_page_size_table[] =
 175 {
 176         { AUDIO_PAGE, sizeof(struct cd_audio_page)}
 177 };
 178
 179 struct cd_quirk_entry {
 180         struct scsi_inquiry_pattern inq_pat;
 181         cd_quirks quirks;
 182 };
 183
 184 /*
 185  * The changer quirk entries aren't strictly necessary.  Basically, what
 186  * they do is tell cdregister() up front that a device is a changer.
 187  * Otherwise, it will figure that fact out once it sees a LUN on the device
 188  * that is greater than 0.  If it is known up front that a device is a changer,
 189  * all I/O to the device will go through the changer scheduling routines, as
 190  * opposed to the "normal" CD code.
 191  *
 192  * NOTE ON 10_BYTE_ONLY quirks:  Any 10_BYTE_ONLY quirks MUST be because
 193  * your device hangs when it gets a 10 byte command.  Adding a quirk just
 194  * to get rid of the informative diagnostic message is not acceptable.  All
 195  * 10_BYTE_ONLY quirks must be documented in full in a PR (which should be
 196  * referenced in a comment along with the quirk) , and must be approved by
 197  * ken@FreeBSD.org.  Any quirks added that don't adhere to this policy may
 198  * be removed until the submitter can explain why they are needed.
 199  * 10_BYTE_ONLY quirks will be removed (as they will no longer be necessary)
 200  * when the CAM_NEW_TRAN_CODE work is done.
 201  */
 202 static struct cd_quirk_entry cd_quirk_table[] =
 203 {
 204         {
 205                 { T_CDROM, SIP_MEDIA_REMOVABLE, "NRC", "MBR-7", "*"},
 206                  /*quirks*/ CD_Q_CHANGER
 207         },
 208         {
 209                 { T_CDROM, SIP_MEDIA_REMOVABLE, "PIONEER", "CD-ROM DRM*",
 210                   "*"}, /* quirks */ CD_Q_CHANGER
 211         },
 212         {
 213                 { T_CDROM, SIP_MEDIA_REMOVABLE, "NAKAMICH", "MJ-*", "*"},
 214                  /* quirks */ CD_Q_CHANGER
 215         },
 216         {
 217                 { T_CDROM, SIP_MEDIA_REMOVABLE, "CHINON", "CD-ROM CDS-535","*"},
 218                 /* quirks */ CD_Q_BCD_TRACKS
 219         }
 220 };
 221
 222 static  d_open_t        cdopen;
 223 static  d_close_t       cdclose;
 224 static  d_ioctl_t       cdioctl;
 225 static  d_strategy_t    cdstrategy;
 226
 227 static  periph_init_t   cdinit;
 228 static  periph_ctor_t   cdregister;
 229 static  periph_dtor_t   cdcleanup;
 230 static  periph_start_t  cdstart;
 231 static  periph_oninv_t  cdoninvalidate;
 232 static  void            cdasync(void *callback_arg, u_int32_t code,
 233                                 struct cam_path *path, void *arg);
 234 static  int             cdcmdsizesysctl(SYSCTL_HANDLER_ARGS);
 235 static  void            cdshorttimeout(void *arg);
 236 static  void            cdschedule(struct cam_periph *periph, int priority);
 237 static  void            cdrunchangerqueue(void *arg);
 238 static  void            cdchangerschedule(struct cd_softc *softc);
 239 static  int             cdrunccb(union ccb *ccb,
 240                                  int (*error_routine)(union ccb *ccb,
 241                                                       u_int32_t cam_flags,
 242                                                       u_int32_t sense_flags),
 243                                  u_int32_t cam_flags, u_int32_t sense_flags);
 244 static union    ccb     *cdgetccb(struct cam_periph *periph,
 245                                   u_int32_t priority);
 246 static  void            cddone(struct cam_periph *periph,
 247                                union ccb *start_ccb);
 248 static  int             cderror(union ccb *ccb, u_int32_t cam_flags,
 249                                 u_int32_t sense_flags);
 250 static  union cd_pages  *cdgetpage(struct cd_mode_params *mode_params);
 251 static  int             cdgetpagesize(int page_num);
 252 static  void            cdprevent(struct cam_periph *periph, int action);
 253 static  int             cdcheckmedia(struct cam_periph *periph);
 254 static  int             cdsize(struct cam_periph *periph, u_int32_t *size);
 255 static  int             cd6byteworkaround(union ccb *ccb);
 256 static  int             cdreadtoc(struct cam_periph *periph, u_int32_t mode,
 257                                   u_int32_t start, u_int8_t *data,
 258                                   u_int32_t len, u_int32_t sense_flags);
 259 static  int             cdgetmode(struct cam_periph *periph,
 260                                   struct cd_mode_params *data, u_int32_t page);
 261 static  int             cdsetmode(struct cam_periph *periph,
 262                                   struct cd_mode_params *data);
 263 static  int             cdplay(struct cam_periph *periph, u_int32_t blk,
 264                                u_int32_t len);
 265 static  int             cdreadsubchannel(struct cam_periph *periph,
 266                                          u_int32_t mode, u_int32_t format,
 267                                          int track,
 268                                          struct cd_sub_channel_info *data,
 269                                          u_int32_t len);
 270 static  int             cdplaymsf(struct cam_periph *periph, u_int32_t startm,
 271                                   u_int32_t starts, u_int32_t startf,
 272                                   u_int32_t endm, u_int32_t ends,
 273                                   u_int32_t endf);
 274 static  int             cdplaytracks(struct cam_periph *periph,
 275                                      u_int32_t strack, u_int32_t sindex,
 276                                      u_int32_t etrack, u_int32_t eindex);
 277 static  int             cdpause(struct cam_periph *periph, u_int32_t go);
 278 static  int             cdstopunit(struct cam_periph *periph, u_int32_t eject);
 279 static  int             cdstartunit(struct cam_periph *periph, int load);
 280 static  int             cdsetspeed(struct cam_periph *periph,
 281                                    u_int32_t rdspeed, u_int32_t wrspeed);
 282 static  int             cdreportkey(struct cam_periph *periph,
 283                                     struct dvd_authinfo *authinfo);
 284 static  int             cdsendkey(struct cam_periph *periph,
 285                                   struct dvd_authinfo *authinfo);
 286 static  int             cdreaddvdstructure(struct cam_periph *periph,
 287                                            struct dvd_struct *dvdstruct);
 288
 289 static struct periph_driver cddriver =
 290 {
 291         cdinit, "cd",
 292         TAILQ_HEAD_INITIALIZER(cddriver.units), /* generation */ 0
 293 };
 294
 295 DATA_SET(periphdriver_set, cddriver);
 296
 297 /* For 2.2-stable support */
 298 #ifndef D_DISK
 299 #define D_DISK 0
 300 #endif
 301 static struct cdevsw cd_cdevsw = {
 302         /* name */      "cd",
 303         /* maj */       SCSICD_CDEV_MAJOR,
 304         /* flags */     D_DISK,
 305         /* port */      NULL,
 306         /* clone */     NULL,
 307
 308         /* open */      cdopen,
 309         /* close */     cdclose,
 310         /* read */      physread,
 311         /* write */     physwrite,
 312         /* ioctl */     cdioctl,
 313         /* poll */      nopoll,
 314         /* mmap */      nommap,
 315         /* strategy */  cdstrategy,
 316         /* dump */      nodump,
 317         /* psize */     nopsize,
 318 };
 319
 320 static struct extend_array *cdperiphs;
 321 static int num_changers;
 322
 323 #ifndef CHANGER_MIN_BUSY_SECONDS
 324 #define CHANGER_MIN_BUSY_SECONDS        5
 325 #endif
 326 #ifndef CHANGER_MAX_BUSY_SECONDS
 327 #define CHANGER_MAX_BUSY_SECONDS        15
 328 #endif
 329
 330 static int changer_min_busy_seconds = CHANGER_MIN_BUSY_SECONDS;
 331 static int changer_max_busy_seconds = CHANGER_MAX_BUSY_SECONDS;
 332
 333 /*
 334  * XXX KDM this CAM node should be moved if we ever get more CAM sysctl
 335  * variables.
 336  */
 337 SYSCTL_NODE(_kern_cam, OID_AUTO, cd, CTLFLAG_RD, 0, "CAM CDROM driver");
 338 SYSCTL_NODE(_kern_cam_cd, OID_AUTO, changer, CTLFLAG_RD, 0, "CD Changer");
 339 SYSCTL_INT(_kern_cam_cd_changer, OID_AUTO, min_busy_seconds, CTLFLAG_RW,
 340            &changer_min_busy_seconds, 0, "Minimum changer scheduling quantum");
 341 TUNABLE_INT("kern.cam.cd.changer.min_busy_seconds", &changer_min_busy_seconds);
 342 SYSCTL_INT(_kern_cam_cd_changer, OID_AUTO, max_busy_seconds, CTLFLAG_RW,
 343            &changer_max_busy_seconds, 0, "Maximum changer scheduling quantum");
 344 TUNABLE_INT("kern.cam.cd.changer.max_busy_seconds", &changer_max_busy_seconds);
 345
 346 struct cdchanger {
 347         path_id_t                        path_id;
 348         target_id_t                      target_id;
 349         int                              num_devices;
 350         struct camq                      devq;
 351         struct timeval                   start_time;
 352         struct cd_softc                  *cur_device;
 353         struct callout                   short_handle;
 354         struct callout                   long_handle;
 355         volatile cd_changer_flags        flags;
 356         STAILQ_ENTRY(cdchanger)          changer_links;
 357         STAILQ_HEAD(chdevlist, cd_softc) chluns;
 358 };
 359
 360 static STAILQ_HEAD(changerlist, cdchanger) changerq;
 361
 362 void
 363 cdinit(void)
 364 {
 365         cam_status status;
 366         struct cam_path *path;
 367
 368         /*
 369          * Create our extend array for storing the devices we attach to.
 370          */
 371         cdperiphs = cam_extend_new();
 372         if (cdperiphs == NULL) {
 373                 printf("cd: Failed to alloc extend array!\n");
 374                 return;
 375         }
 376
 377         /*
 378          * Install a global async callback.  This callback will
 379          * receive async callbacks like "new device found".
 380          */
 381         status = xpt_create_path(&path, /*periph*/NULL, CAM_XPT_PATH_ID,
 382                                  CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD);
 383
 384         if (status == CAM_REQ_CMP) {
 385                 struct ccb_setasync csa;
 386
 387                 xpt_setup_ccb(&csa.ccb_h, path, /*priority*/5);
 388                 csa.ccb_h.func_code = XPT_SASYNC_CB;
 389                 csa.event_enable = AC_FOUND_DEVICE;
 390                 csa.callback = cdasync;
 391                 csa.callback_arg = NULL;
 392                 xpt_action((union ccb *)&csa);
 393                 status = csa.ccb_h.status;
 394                 xpt_free_path(path);
 395         }
 396
 397         if (status != CAM_REQ_CMP) {
 398                 printf("cd: Failed to attach master async callback "
 399                        "due to status 0x%x!\n", status);
 400         }
 401 }
 402
 403 static void
 404 cdoninvalidate(struct cam_periph *periph)
 405 {
 406         struct cd_softc *softc;
 407         struct buf *q_bp;
 408         struct bio *q_bio;
 409         struct ccb_setasync csa;
 410
 411         softc = (struct cd_softc *)periph->softc;
 412
 413         /*
 414          * De-register any async callbacks.
 415          */
 416         xpt_setup_ccb(&csa.ccb_h, periph->path,
 417                       /* priority */ 5);
 418         csa.ccb_h.func_code = XPT_SASYNC_CB;
 419         csa.event_enable = 0;
 420         csa.callback = cdasync;
 421         csa.callback_arg = periph;
 422         xpt_action((union ccb *)&csa);
 423
 424         softc->flags |= CD_FLAG_INVALID;
 425
 426         /*
 427          * Although the oninvalidate() routines are always while in a
 428          * critical section, we need to be in a critical section here to
 429          * keep the buffer queue from being modified while we traverse it.
 430          */
 431         crit_enter();
 432
 433         /*
 434          * Return all queued I/O with ENXIO.
 435          * XXX Handle any transactions queued to the card
 436          *     with XPT_ABORT_CCB.
 437          */
 438         while ((q_bio = bioq_first(&softc->bio_queue)) != NULL){
 439                 bioq_remove(&softc->bio_queue, q_bio);
 440                 q_bp = q_bio->bio_buf;
 441                 q_bp->b_resid = q_bp->b_bcount;
 442                 q_bp->b_error = ENXIO;
 443                 q_bp->b_flags |= B_ERROR;
 444                 biodone(q_bio);
 445         }
 446         crit_exit();
 447
 448         /*
 449          * If this device is part of a changer, and it was scheduled
 450          * to run, remove it from the run queue since we just nuked
 451          * all of its scheduled I/O.
 452          */
 453         if ((softc->flags & CD_FLAG_CHANGER)
 454          && (softc->pinfo.index != CAM_UNQUEUED_INDEX))
 455                 camq_remove(&softc->changer->devq, softc->pinfo.index);
 456
 457         xpt_print_path(periph->path);
 458         printf("lost device\n");
 459 }
 460
 461 static void
 462 cdcleanup(struct cam_periph *periph)
 463 {
 464         struct cd_softc *softc;
 465
 466         softc = (struct cd_softc *)periph->softc;
 467
 468         xpt_print_path(periph->path);
 469         printf("removing device entry\n");
 470
 471         if ((softc->flags & CD_FLAG_SCTX_INIT) != 0
 472             && sysctl_ctx_free(&softc->sysctl_ctx) != 0) {
 473                 xpt_print_path(periph->path);
 474                 printf("can't remove sysctl context\n");
 475         }
 476
 477         crit_enter();
 478         /*
 479          * In the queued, non-active case, the device in question
 480          * has already been removed from the changer run queue.  Since this
 481          * device is active, we need to de-activate it, and schedule
 482          * another device to run.  (if there is another one to run)
 483          */
 484         if ((softc->flags & CD_FLAG_CHANGER)
 485          && (softc->flags & CD_FLAG_ACTIVE)) {
 486
 487                 /*
 488                  * The purpose of the short timeout is soley to determine
 489                  * whether the current device has finished or not.  Well,
 490                  * since we're removing the active device, we know that it
 491                  * is finished.  So, get rid of the short timeout.
 492                  * Otherwise, if we're in the time period before the short
 493                  * timeout fires, and there are no other devices in the
 494                  * queue to run, there won't be any other device put in the
 495                  * active slot.  i.e., when we call cdrunchangerqueue()
 496                  * below, it won't do anything.  Then, when the short
 497                  * timeout fires, it'll look at the "current device", which
 498                  * we are free below, and possibly panic the kernel on a
 499                  * bogus pointer reference.
 500                  *
 501                  * The long timeout doesn't really matter, since we
 502                  * decrement the qfrozen_cnt to indicate that there is
 503                  * nothing in the active slot now.  Therefore, there won't
 504                  * be any bogus pointer references there.
 505                  */
 506                 if (softc->changer->flags & CHANGER_SHORT_TMOUT_SCHED) {
 507                         callout_stop(&softc->changer->short_handle);
 508                         softc->changer->flags &= ~CHANGER_SHORT_TMOUT_SCHED;
 509                 }
 510                 softc->changer->devq.qfrozen_cnt--;
 511                 softc->changer->flags |= CHANGER_MANUAL_CALL;
 512                 cdrunchangerqueue(softc->changer);
 513         }
 514
 515         /*
 516          * If we're removing the last device on the changer, go ahead and
 517          * remove the changer device structure.
 518          */
 519         if ((softc->flags & CD_FLAG_CHANGER)
 520          && (--softc->changer->num_devices == 0)) {
 521
 522                 /*
 523                  * Theoretically, there shouldn't be any timeouts left, but
 524                  * I'm not completely sure that that will be the case.  So,
 525                  * it won't hurt to check and see if there are any left.
 526                  */
 527                 if (softc->changer->flags & CHANGER_TIMEOUT_SCHED) {
 528                         callout_stop(&softc->changer->long_handle);
 529                         softc->changer->flags &= ~CHANGER_TIMEOUT_SCHED;
 530                 }
 531
 532                 if (softc->changer->flags & CHANGER_SHORT_TMOUT_SCHED) {
 533                         callout_stop(&softc->changer->short_handle);
 534                         softc->changer->flags &= ~CHANGER_SHORT_TMOUT_SCHED;
 535                 }
 536
 537                 STAILQ_REMOVE(&changerq, softc->changer, cdchanger,
 538                               changer_links);
 539                 xpt_print_path(periph->path);
 540                 printf("removing changer entry\n");
 541                 free(softc->changer, M_DEVBUF);
 542                 num_changers--;
 543         }
 544         devstat_remove_entry(&softc->device_stats);
 545         cam_extend_release(cdperiphs, periph->unit_number);
 546         if (softc->disk.d_rawdev) {
 547                 disk_destroy(&softc->disk);
 548         }
 549         free(softc, M_DEVBUF);
 550         crit_exit();
 551 }
 552
 553 static void
 554 cdasync(void *callback_arg, u_int32_t code,
 555         struct cam_path *path, void *arg)
 556 {
 557         struct cam_periph *periph;
 558
 559         periph = (struct cam_periph *)callback_arg;
 560         switch (code) {
 561         case AC_FOUND_DEVICE:
 562         {
 563                 struct ccb_getdev *cgd;
 564                 cam_status status;
 565
 566                 cgd = (struct ccb_getdev *)arg;
 567
 568                 if (SID_TYPE(&cgd->inq_data) != T_CDROM
 569                     && SID_TYPE(&cgd->inq_data) != T_WORM)
 570                         break;
 571
 572                 /*
 573                  * Allocate a peripheral instance for
 574                  * this device and start the probe
 575                  * process.
 576                  */
 577                 status = cam_periph_alloc(cdregister, cdoninvalidate,
 578                                           cdcleanup, cdstart,
 579                                           "cd", CAM_PERIPH_BIO,
 580                                           cgd->ccb_h.path, cdasync,
 581                                           AC_FOUND_DEVICE, cgd);
 582
 583                 if (status != CAM_REQ_CMP
 584                  && status != CAM_REQ_INPROG)
 585                         printf("cdasync: Unable to attach new device "
 586                                "due to status 0x%x\n", status);
 587
 588                 break;
 589         }
 590         case AC_SENT_BDR:
 591         case AC_BUS_RESET:
 592         {
 593                 struct cd_softc *softc;
 594                 struct ccb_hdr *ccbh;
 595
 596                 softc = (struct cd_softc *)periph->softc;
 597                 crit_enter();
 598                 /*
 599                  * Don't fail on the expected unit attention
 600                  * that will occur.
 601                  */
 602                 softc->flags |= CD_FLAG_RETRY_UA;
 603                 for (ccbh = LIST_FIRST(&softc->pending_ccbs);
 604                      ccbh != NULL; ccbh = LIST_NEXT(ccbh, periph_links.le))
 605                         ccbh->ccb_state |= CD_CCB_RETRY_UA;
 606                 crit_exit();
 607                 /* FALLTHROUGH */
 608         }
 609         default:
 610                 cam_periph_async(periph, code, path, arg);
 611                 break;
 612         }
 613 }
 614
 615 static void
 616 cdsysctlinit(void *context, int pending)
 617 {
 618         struct cam_periph *periph;
 619         struct cd_softc *softc;
 620         char tmpstr[80], tmpstr2[80];
 621
 622         periph = (struct cam_periph *)context;
 623         softc = (struct cd_softc *)periph->softc;
 624
 625         snprintf(tmpstr, sizeof(tmpstr), "CAM CD unit %d", periph->unit_number);
 626         snprintf(tmpstr2, sizeof(tmpstr2), "%d", periph->unit_number);
 627
 628         sysctl_ctx_init(&softc->sysctl_ctx);
 629         softc->flags |= CD_FLAG_SCTX_INIT;
 630         softc->sysctl_tree = SYSCTL_ADD_NODE(&softc->sysctl_ctx,
 631         SYSCTL_STATIC_CHILDREN(_kern_cam_cd), OID_AUTO,
 632         tmpstr2, CTLFLAG_RD, 0, tmpstr);
 633
 634         if (softc->sysctl_tree == NULL) {
 635                 printf("cdsysctlinit: unable to allocate sysctl tree\n");
 636                 return;
 637         }
 638
 639         /*
 640          * Now register the sysctl handler, so the user can the value on
 641          * the fly.
 642          */
 643         SYSCTL_ADD_PROC(&softc->sysctl_ctx,SYSCTL_CHILDREN(softc->sysctl_tree),
 644                         OID_AUTO, "minimum_cmd_size", CTLTYPE_INT | CTLFLAG_RW,
 645                         &softc->minimum_command_size, 0, cdcmdsizesysctl, "I",
 646                         "Minimum CDB size");
 647 }
 648
 649 /*
 650  * We have a handler function for this so we can check the values when the
 651  * user sets them, instead of every time we look at them.
 652  */
 653 static int
 654 cdcmdsizesysctl(SYSCTL_HANDLER_ARGS)
 655 {
 656         int error, value;
 657
 658         value = *(int *)arg1;
 659
 660         error = sysctl_handle_int(oidp, &value, 0, req);
 661
 662         if ((error != 0) || (req->newptr == NULL))
 663                 return (error);
 664
 665         /*
 666          * The only real values we can have here are 6 or 10.  I don't
 667          * really forsee having 12 be an option at any time in the future.
 668          * So if the user sets something less than or equal to 6, we'll set
 669          * it to 6.  If he sets something greater than 6, we'll set it to 10.
 670          *
 671          * I suppose we could just return an error here for the wrong values,
 672          * but I don't think it's necessary to do so, as long as we can
 673          * determine the user's intent without too much trouble.
 674          */
 675         if (value < 6)
 676                 value = 6;
 677         else if (value > 6)
 678                 value = 10;
 679
 680         *(int *)arg1 = value;
 681
 682         return (0);
 683 }
 684
 685
 686 static cam_status
 687 cdregister(struct cam_periph *periph, void *arg)
 688 {
 689         struct cd_softc *softc;
 690         struct ccb_setasync csa;
 691         struct ccb_pathinq cpi;
 692         struct ccb_getdev *cgd;
 693         char tmpstr[80];
 694         caddr_t match;
 695
 696         cgd = (struct ccb_getdev *)arg;
 697         if (periph == NULL) {
 698                 printf("cdregister: periph was NULL!!\n");
 699                 return(CAM_REQ_CMP_ERR);
 700         }
 701         if (cgd == NULL) {
 702                 printf("cdregister: no getdev CCB, can't register device\n");
 703                 return(CAM_REQ_CMP_ERR);
 704         }
 705
 706         softc = malloc(sizeof(*softc), M_DEVBUF, M_INTWAIT | M_ZERO);
 707         LIST_INIT(&softc->pending_ccbs);
 708         STAILQ_INIT(&softc->mode_queue);
 709         softc->state = CD_STATE_PROBE;
 710         bioq_init(&softc->bio_queue);
 711         if (SID_IS_REMOVABLE(&cgd->inq_data))
 712                 softc->flags |= CD_FLAG_DISC_REMOVABLE;
 713         if ((cgd->inq_data.flags & SID_CmdQue) != 0)
 714                 softc->flags |= CD_FLAG_TAGGED_QUEUING;
 715
 716         periph->softc = softc;
 717         softc->periph = periph;
 718
 719         cam_extend_set(cdperiphs, periph->unit_number, periph);
 720
 721         /*
 722          * See if this device has any quirks.
 723          */
 724         match = cam_quirkmatch((caddr_t)&cgd->inq_data,
 725                                (caddr_t)cd_quirk_table,
 726                                sizeof(cd_quirk_table)/sizeof(*cd_quirk_table),
 727                                sizeof(*cd_quirk_table), scsi_inquiry_match);
 728
 729         if (match != NULL)
 730                 softc->quirks = ((struct cd_quirk_entry *)match)->quirks;
 731         else
 732                 softc->quirks = CD_Q_NONE;
 733
 734         /* Check if the SIM does not want 6 byte commands */
 735         xpt_setup_ccb(&cpi.ccb_h, periph->path, /*priority*/1);
 736         cpi.ccb_h.func_code = XPT_PATH_INQ;
 737         xpt_action((union ccb *)&cpi);
 738         if (cpi.ccb_h.status == CAM_REQ_CMP && (cpi.hba_misc & PIM_NO_6_BYTE))
 739                 softc->quirks |= CD_Q_10_BYTE_ONLY;
 740
 741         TASK_INIT(&softc->sysctl_task, 0, cdsysctlinit, periph);
 742
 743         /* The default is 6 byte commands, unless quirked otherwise */
 744         if (softc->quirks & CD_Q_10_BYTE_ONLY)
 745                 softc->minimum_command_size = 10;
 746         else
 747                 softc->minimum_command_size = 6;
 748
 749         /*
 750          * Load the user's default, if any.
 751          */
 752         snprintf(tmpstr, sizeof(tmpstr), "kern.cam.cd.%d.minimum_cmd_size",
 753                 periph->unit_number);
 754         TUNABLE_INT_FETCH(tmpstr, &softc->minimum_command_size);
 755
 756         /* 6 and 10 are the only permissible values here. */
 757         if (softc->minimum_command_size < 6)
 758                 softc->minimum_command_size = 6;
 759         else if (softc->minimum_command_size > 6)
 760                 softc->minimum_command_size = 10;
 761
 762         /*
 763          * We need to register the statistics structure for this device,
 764          * but we don't have the blocksize yet for it.  So, we register
 765          * the structure and indicate that we don't have the blocksize
 766          * yet.  Unlike other SCSI peripheral drivers, we explicitly set
 767          * the device type here to be CDROM, rather than just ORing in
 768          * the device type.  This is because this driver can attach to either
 769          * CDROM or WORM devices, and we want this peripheral driver to
 770          * show up in the devstat list as a CD peripheral driver, not a
 771          * WORM peripheral driver.  WORM drives will also have the WORM
 772          * driver attached to them.
 773          */
 774         devstat_add_entry(&softc->device_stats, "cd",
 775                           periph->unit_number, 0,
 776                           DEVSTAT_BS_UNAVAILABLE,
 777                           DEVSTAT_TYPE_CDROM | DEVSTAT_TYPE_IF_SCSI,
 778                           DEVSTAT_PRIORITY_CD);
 779         disk_create(periph->unit_number, &softc->disk,
 780                     DSO_ONESLICE | DSO_COMPATLABEL, &cd_cdevsw);
 781
 782         /*
 783          * Add an async callback so that we get
 784          * notified if this device goes away.
 785          */
 786         xpt_setup_ccb(&csa.ccb_h, periph->path,
 787                       /* priority */ 5);
 788         csa.ccb_h.func_code = XPT_SASYNC_CB;
 789         csa.event_enable = AC_SENT_BDR | AC_BUS_RESET | AC_LOST_DEVICE;
 790         csa.callback = cdasync;
 791         csa.callback_arg = periph;
 792         xpt_action((union ccb *)&csa);
 793
 794         /*
 795          * If the target lun is greater than 0, we most likely have a CD
 796          * changer device.  Check the quirk entries as well, though, just
 797          * in case someone has a CD tower with one lun per drive or
 798          * something like that.  Also, if we know up front that a
 799          * particular device is a changer, we can mark it as such starting
 800          * with lun 0, instead of lun 1.  It shouldn't be necessary to have
 801          * a quirk entry to define something as a changer, however.
 802          */
 803         if (((cgd->ccb_h.target_lun > 0)
 804           && ((softc->quirks & CD_Q_NO_CHANGER) == 0))
 805          || ((softc->quirks & CD_Q_CHANGER) != 0)) {
 806                 struct cdchanger *nchanger;
 807                 struct cam_periph *nperiph;
 808                 struct cam_path *path;
 809                 cam_status status;
 810                 int found;
 811
 812                 /* Set the changer flag in the current device's softc */
 813                 softc->flags |= CD_FLAG_CHANGER;
 814
 815                 if (num_changers == 0)
 816                         STAILQ_INIT(&changerq);
 817
 818                 /*
 819                  * Now, look around for an existing changer device with the
 820                  * same path and target ID as the current device.
 821                  */
 822                 for (found = 0,
 823                      nchanger = (struct cdchanger *)STAILQ_FIRST(&changerq);
 824                      nchanger != NULL;
 825                      nchanger = STAILQ_NEXT(nchanger, changer_links)){
 826                         if ((nchanger->path_id == cgd->ccb_h.path_id)
 827                          && (nchanger->target_id == cgd->ccb_h.target_id)) {
 828                                 found = 1;
 829                                 break;
 830                         }
 831                 }
 832
 833                 /*
 834                  * If we found a matching entry, just add this device to
 835                  * the list of devices on this changer.
 836                  */
 837                 if (found == 1) {
 838                         struct chdevlist *chlunhead;
 839
 840                         chlunhead = &nchanger->chluns;
 841
 842                         /*
 843                          * XXX KDM look at consolidating this code with the
 844                          * code below in a separate function.
 845                          */
 846
 847                         /*
 848                          * Create a path with lun id 0, and see if we can
 849                          * find a matching device
 850                          */
 851                         status = xpt_create_path(&path, /*periph*/ periph,
 852                                                  cgd->ccb_h.path_id,
 853                                                  cgd->ccb_h.target_id, 0);
 854
 855                         if ((status == CAM_REQ_CMP)
 856                          && ((nperiph = cam_periph_find(path, "cd")) != NULL)){
 857                                 struct cd_softc *nsoftc;
 858
 859                                 nsoftc = (struct cd_softc *)nperiph->softc;
 860
 861                                 if ((nsoftc->flags & CD_FLAG_CHANGER) == 0){
 862                                         nsoftc->flags |= CD_FLAG_CHANGER;
 863                                         nchanger->num_devices++;
 864                                         if (camq_resize(&nchanger->devq,
 865                                            nchanger->num_devices)!=CAM_REQ_CMP){
 866                                                 printf("cdregister: "
 867                                                        "camq_resize "
 868                                                        "failed, changer "
 869                                                        "support may "
 870                                                        "be messed up\n");
 871                                         }
 872                                         nsoftc->changer = nchanger;
 873                                         nsoftc->pinfo.index =CAM_UNQUEUED_INDEX;
 874
 875                                         STAILQ_INSERT_TAIL(&nchanger->chluns,
 876                                                           nsoftc,changer_links);
 877                                 }
 878                                 xpt_free_path(path);
 879                         } else if (status == CAM_REQ_CMP)
 880                                 xpt_free_path(path);
 881                         else {
 882                                 printf("cdregister: unable to allocate path\n"
 883                                        "cdregister: changer support may be "
 884                                        "broken\n");
 885                         }
 886
 887                         nchanger->num_devices++;
 888
 889                         softc->changer = nchanger;
 890                         softc->pinfo.index = CAM_UNQUEUED_INDEX;
 891
 892                         if (camq_resize(&nchanger->devq,
 893                             nchanger->num_devices) != CAM_REQ_CMP) {
 894                                 printf("cdregister: camq_resize "
 895                                        "failed, changer support may "
 896                                        "be messed up\n");
 897                         }
 898
 899                         STAILQ_INSERT_TAIL(chlunhead, softc, changer_links);
 900                 }
 901                 /*
 902                  * In this case, we don't already have an entry for this
 903                  * particular changer, so we need to create one, add it to
 904                  * the queue, and queue this device on the list for this
 905                  * changer.  Before we queue this device, however, we need
 906                  * to search for lun id 0 on this target, and add it to the
 907                  * queue first, if it exists.  (and if it hasn't already
 908                  * been marked as part of the changer.)
 909                  */
 910                 else {
 911                         nchanger = malloc(sizeof(struct cdchanger),
 912                                         M_DEVBUF, M_INTWAIT | M_ZERO);
 913                         callout_init(&nchanger->short_handle);
 914                         callout_init(&nchanger->long_handle);
 915                         if (camq_init(&nchanger->devq, 1) != 0) {
 916                                 softc->flags &= ~CD_FLAG_CHANGER;
 917                                 printf("cdregister: changer support "
 918                                        "disabled\n");
 919                                 goto cdregisterexit;
 920                         }
 921
 922                         num_changers++;
 923
 924                         nchanger->path_id = cgd->ccb_h.path_id;
 925                         nchanger->target_id = cgd->ccb_h.target_id;
 926
 927                         /* this is superfluous, but it makes things clearer */
 928                         nchanger->num_devices = 0;
 929
 930                         STAILQ_INIT(&nchanger->chluns);
 931
 932                         STAILQ_INSERT_TAIL(&changerq, nchanger,
 933                                            changer_links);
 934
 935                         /*
 936                          * Create a path with lun id 0, and see if we can
 937                          * find a matching device
 938                          */
 939                         status = xpt_create_path(&path, /*periph*/ periph,
 940                                                  cgd->ccb_h.path_id,
 941                                                  cgd->ccb_h.target_id, 0);
 942
 943                         /*
 944                          * If we were able to allocate the path, and if we
 945                          * find a matching device and it isn't already
 946                          * marked as part of a changer, then we add it to
 947                          * the current changer.
 948                          */
 949                         if ((status == CAM_REQ_CMP)
 950                          && ((nperiph = cam_periph_find(path, "cd")) != NULL)
 951                          && ((((struct cd_softc *)periph->softc)->flags &
 952                                CD_FLAG_CHANGER) == 0)) {
 953                                 struct cd_softc *nsoftc;
 954
 955                                 nsoftc = (struct cd_softc *)nperiph->softc;
 956
 957                                 nsoftc->flags |= CD_FLAG_CHANGER;
 958                                 nchanger->num_devices++;
 959                                 if (camq_resize(&nchanger->devq,
 960                                     nchanger->num_devices) != CAM_REQ_CMP) {
 961                                         printf("cdregister: camq_resize "
 962                                                "failed, changer support may "
 963                                                "be messed up\n");
 964                                 }
 965                                 nsoftc->changer = nchanger;
 966                                 nsoftc->pinfo.index = CAM_UNQUEUED_INDEX;
 967
 968                                 STAILQ_INSERT_TAIL(&nchanger->chluns,
 969                                                    nsoftc, changer_links);
 970                                 xpt_free_path(path);
 971                         } else if (status == CAM_REQ_CMP)
 972                                 xpt_free_path(path);
 973                         else {
 974                                 printf("cdregister: unable to allocate path\n"
 975                                        "cdregister: changer support may be "
 976                                        "broken\n");
 977                         }
 978
 979                         softc->changer = nchanger;
 980                         softc->pinfo.index = CAM_UNQUEUED_INDEX;
 981                         nchanger->num_devices++;
 982                         if (camq_resize(&nchanger->devq,
 983                             nchanger->num_devices) != CAM_REQ_CMP) {
 984                                 printf("cdregister: camq_resize "
 985                                        "failed, changer support may "
 986                                        "be messed up\n");
 987                         }
 988                         STAILQ_INSERT_TAIL(&nchanger->chluns, softc,
 989                                            changer_links);
 990                 }
 991         }
 992
 993 cdregisterexit:
 994
 995         /* Lock this peripheral until we are setup */
 996         /* Can't block */
 997         cam_periph_lock(periph, 0);
 998
 999         if ((softc->flags & CD_FLAG_CHANGER) == 0)
1000                 xpt_schedule(periph, /*priority*/5);
1001         else
1002                 cdschedule(periph, /*priority*/ 5);
1003
1004         return(CAM_REQ_CMP);
1005 }
1006
1007 static int
1008 cdopen(dev_t dev, int flags, int fmt, struct thread *td)
1009 {
1010         struct cam_periph *periph;
1011         struct cd_softc *softc;
1012         int unit, error;
1013
1014         unit = dkunit(dev);
1015         periph = cam_extend_get(cdperiphs, unit);
1016
1017         if (periph == NULL)
1018                 return (ENXIO);
1019
1020         softc = (struct cd_softc *)periph->softc;
1021
1022         /*
1023          * Grab a critical section and hold it until we lock the peripheral.
1024          */
1025         crit_enter();
1026         if (softc->flags & CD_FLAG_INVALID) {
1027                 crit_exit();
1028                 return(ENXIO);
1029         }
1030
1031         if ((error = cam_periph_lock(periph, PCATCH)) != 0) {
1032                 crit_exit();
1033                 return (error);
1034         }
1035
1036         crit_exit();
1037
1038         if (cam_periph_acquire(periph) != CAM_REQ_CMP)
1039                 return(ENXIO);
1040
1041         /*
1042          * Check for media, and set the appropriate flags.  We don't bail
1043          * if we don't have media, but then we don't allow anything but the
1044          * CDIOCEJECT/CDIOCCLOSE ioctls if there is no media.
1045          *
1046          * XXX KDM for now, we do fail the open if we don't have media.  We
1047          * can change this once we've figured out how to make the slice
1048          * code work well with media changing underneath it.
1049          */
1050         error = cdcheckmedia(periph);
1051
1052         if (error == 0)
1053                 softc->flags |= CD_FLAG_OPEN;
1054
1055         cam_periph_unlock(periph);
1056
1057         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("leaving cdopen\n"));
1058
1059         return (error);
1060 }
1061
1062 static int
1063 cdclose(dev_t dev, int flag, int fmt, struct thread *td)
1064 {
1065         struct  cam_periph *periph;
1066         struct  cd_softc *softc;
1067         int     unit, error;
1068
1069         unit = dkunit(dev);
1070         periph = cam_extend_get(cdperiphs, unit);
1071         if (periph == NULL)
1072                 return (ENXIO);
1073
1074         softc = (struct cd_softc *)periph->softc;
1075
1076         if ((error = cam_periph_lock(periph, 0)) != 0)
1077                 return (error);
1078
1079         if ((softc->flags & CD_FLAG_DISC_REMOVABLE) != 0)
1080                 cdprevent(periph, PR_ALLOW);
1081
1082         /*
1083          * Unconditionally set the dsopen() flags back to their default
1084          * state.
1085          */
1086         softc->disk.d_dsflags &= ~DSO_NOLABELS;
1087         softc->disk.d_dsflags |= DSO_COMPATLABEL;
1088
1089         /*
1090          * Since we're closing this CD, mark the blocksize as unavailable.
1091          * It will be marked as available when the CD is opened again.
1092          */
1093         softc->device_stats.flags |= DEVSTAT_BS_UNAVAILABLE;
1094
1095         /*
1096          * We'll check the media and toc again at the next open().
1097          */
1098         softc->flags &= ~(CD_FLAG_VALID_MEDIA|CD_FLAG_VALID_TOC);
1099
1100         softc->flags &= ~CD_FLAG_OPEN;
1101
1102         cam_periph_unlock(periph);
1103         cam_periph_release(periph);
1104
1105         return (0);
1106 }
1107
1108 static void
1109 cdshorttimeout(void *arg)
1110 {
1111         struct cdchanger *changer;
1112
1113         crit_enter();
1114
1115         changer = (struct cdchanger *)arg;
1116
1117         /* Always clear the short timeout flag, since that's what we're in */
1118         changer->flags &= ~CHANGER_SHORT_TMOUT_SCHED;
1119
1120         /*
1121          * Check to see if there is any more pending or outstanding I/O for
1122          * this device.  If not, move it out of the active slot.
1123          */
1124         if ((bioq_first(&changer->cur_device->bio_queue) == NULL)
1125          && (changer->cur_device->device_stats.busy_count == 0)) {
1126                 changer->flags |= CHANGER_MANUAL_CALL;
1127                 cdrunchangerqueue(changer);
1128         }
1129         crit_exit();
1130 }
1131
1132 /*
1133  * This is a wrapper for xpt_schedule.  It only applies to changers.
1134  */
1135 static void
1136 cdschedule(struct cam_periph *periph, int priority)
1137 {
1138         struct cd_softc *softc;
1139
1140         crit_enter();
1141
1142         softc = (struct cd_softc *)periph->softc;
1143
1144         /*
1145          * If this device isn't currently queued, and if it isn't
1146          * the active device, then we queue this device and run the
1147          * changer queue if there is no timeout scheduled to do it.
1148          * If this device is the active device, just schedule it
1149          * to run again.  If this device is queued, there should be
1150          * a timeout in place already that will make sure it runs.
1151          */
1152         if ((softc->pinfo.index == CAM_UNQUEUED_INDEX)
1153          && ((softc->flags & CD_FLAG_ACTIVE) == 0)) {
1154                 /*
1155                  * We don't do anything with the priority here.
1156                  * This is strictly a fifo queue.
1157                  */
1158                 softc->pinfo.priority = 1;
1159                 softc->pinfo.generation = ++softc->changer->devq.generation;
1160                 camq_insert(&softc->changer->devq, (cam_pinfo *)softc);
1161
1162                 /*
1163                  * Since we just put a device in the changer queue,
1164                  * check and see if there is a timeout scheduled for
1165                  * this changer.  If so, let the timeout handle
1166                  * switching this device into the active slot.  If
1167                  * not, manually call the timeout routine to
1168                  * bootstrap things.
1169                  */
1170                 if (((softc->changer->flags & CHANGER_TIMEOUT_SCHED)==0)
1171                  && ((softc->changer->flags & CHANGER_NEED_TIMEOUT)==0)
1172                  && ((softc->changer->flags & CHANGER_SHORT_TMOUT_SCHED)==0)){
1173                         softc->changer->flags |= CHANGER_MANUAL_CALL;
1174                         cdrunchangerqueue(softc->changer);
1175                 }
1176         } else if ((softc->flags & CD_FLAG_ACTIVE)
1177                 && ((softc->flags & CD_FLAG_SCHED_ON_COMP) == 0)) {
1178                 xpt_schedule(periph, priority);
1179         }
1180         crit_exit();
1181 }
1182
1183 static void
1184 cdrunchangerqueue(void *arg)
1185 {
1186         struct cd_softc *softc;
1187         struct cdchanger *changer;
1188         int called_from_timeout;
1189
1190         crit_enter();
1191
1192         changer = (struct cdchanger *)arg;
1193
1194         /*
1195          * If we have NOT been called from cdstrategy() or cddone(), and
1196          * instead from a timeout routine, go ahead and clear the
1197          * timeout flag.
1198          */
1199         if ((changer->flags & CHANGER_MANUAL_CALL) == 0) {
1200                 changer->flags &= ~CHANGER_TIMEOUT_SCHED;
1201                 called_from_timeout = 1;
1202         } else
1203                 called_from_timeout = 0;
1204
1205         /* Always clear the manual call flag */
1206         changer->flags &= ~CHANGER_MANUAL_CALL;
1207
1208         /* nothing to do if the queue is empty */
1209         if (changer->devq.entries <= 0) {
1210                 crit_exit();
1211                 return;
1212         }
1213
1214         /*
1215          * If the changer queue is frozen, that means we have an active
1216          * device.
1217          */
1218         if (changer->devq.qfrozen_cnt > 0) {
1219
1220                 if (changer->cur_device->device_stats.busy_count > 0) {
1221                         changer->cur_device->flags |= CD_FLAG_SCHED_ON_COMP;
1222                         changer->cur_device->bufs_left =
1223                                 changer->cur_device->device_stats.busy_count;
1224                         if (called_from_timeout) {
1225                                 callout_reset(&changer->long_handle,
1226                                         changer_max_busy_seconds * hz,
1227                                         cdrunchangerqueue, changer);
1228                                 changer->flags |= CHANGER_TIMEOUT_SCHED;
1229                         }
1230                         crit_exit();
1231                         return;
1232                 }
1233
1234                 /*
1235                  * We always need to reset the frozen count and clear the
1236                  * active flag.
1237                  */
1238                 changer->devq.qfrozen_cnt--;
1239                 changer->cur_device->flags &= ~CD_FLAG_ACTIVE;
1240                 changer->cur_device->flags &= ~CD_FLAG_SCHED_ON_COMP;
1241
1242                 /*
1243                  * Check to see whether the current device has any I/O left
1244                  * to do.  If so, requeue it at the end of the queue.  If
1245                  * not, there is no need to requeue it.
1246                  */
1247                 if (bioq_first(&changer->cur_device->bio_queue) != NULL) {
1248
1249                         changer->cur_device->pinfo.generation =
1250                                 ++changer->devq.generation;
1251                         camq_insert(&changer->devq,
1252                                 (cam_pinfo *)changer->cur_device);
1253                 }
1254         }
1255
1256         softc = (struct cd_softc *)camq_remove(&changer->devq, CAMQ_HEAD);
1257
1258         changer->cur_device = softc;
1259
1260         changer->devq.qfrozen_cnt++;
1261         softc->flags |= CD_FLAG_ACTIVE;
1262
1263         /* Just in case this device is waiting */
1264         wakeup(&softc->changer);
1265         xpt_schedule(softc->periph, /*priority*/ 1);
1266
1267         /*
1268          * Get rid of any pending timeouts, and set a flag to schedule new
1269          * ones so this device gets its full time quantum.
1270          */
1271         if (changer->flags & CHANGER_TIMEOUT_SCHED) {
1272                 callout_stop(&changer->long_handle);
1273                 changer->flags &= ~CHANGER_TIMEOUT_SCHED;
1274         }
1275
1276         if (changer->flags & CHANGER_SHORT_TMOUT_SCHED) {
1277                 callout_stop(&changer->short_handle);
1278                 changer->flags &= ~CHANGER_SHORT_TMOUT_SCHED;
1279         }
1280
1281         /*
1282          * We need to schedule timeouts, but we only do this after the
1283          * first transaction has completed.  This eliminates the changer
1284          * switch time.
1285          */
1286         changer->flags |= CHANGER_NEED_TIMEOUT;
1287
1288         crit_exit();
1289 }
1290
1291 static void
1292 cdchangerschedule(struct cd_softc *softc)
1293 {
1294         struct cdchanger *changer;
1295
1296         crit_enter();
1297
1298         changer = softc->changer;
1299
1300         /*
1301          * If this is a changer, and this is the current device,
1302          * and this device has at least the minimum time quantum to
1303          * run, see if we can switch it out.
1304          */
1305         if ((softc->flags & CD_FLAG_ACTIVE)
1306          && ((changer->flags & CHANGER_SHORT_TMOUT_SCHED) == 0)
1307          && ((changer->flags & CHANGER_NEED_TIMEOUT) == 0)) {
1308                 /*
1309                  * We try three things here.  The first is that we
1310                  * check to see whether the schedule on completion
1311                  * flag is set.  If it is, we decrement the number
1312                  * of buffers left, and if it's zero, we reschedule.
1313                  * Next, we check to see whether the pending buffer
1314                  * queue is empty and whether there are no
1315                  * outstanding transactions.  If so, we reschedule.
1316                  * Next, we see if the pending buffer queue is empty.
1317                  * If it is, we set the number of buffers left to
1318                  * the current active buffer count and set the
1319                  * schedule on complete flag.
1320                  */
1321                 if (softc->flags & CD_FLAG_SCHED_ON_COMP) {
1322                         if (--softc->bufs_left == 0) {
1323                                 softc->changer->flags |=
1324                                         CHANGER_MANUAL_CALL;
1325                                 softc->flags &= ~CD_FLAG_SCHED_ON_COMP;
1326                                 cdrunchangerqueue(softc->changer);
1327                         }
1328                 } else if ((bioq_first(&softc->bio_queue) == NULL)
1329                         && (softc->device_stats.busy_count == 0)) {
1330                         softc->changer->flags |= CHANGER_MANUAL_CALL;
1331                         cdrunchangerqueue(softc->changer);
1332                 }
1333         } else if ((softc->changer->flags & CHANGER_NEED_TIMEOUT)
1334                 && (softc->flags & CD_FLAG_ACTIVE)) {
1335
1336                 /*
1337                  * Now that the first transaction to this
1338                  * particular device has completed, we can go ahead
1339                  * and schedule our timeouts.
1340                  */
1341                 if ((changer->flags & CHANGER_TIMEOUT_SCHED) == 0) {
1342                         callout_reset(&changer->long_handle,
1343                                     changer_max_busy_seconds * hz,
1344                                     cdrunchangerqueue, changer);
1345                         changer->flags |= CHANGER_TIMEOUT_SCHED;
1346                 } else
1347                         printf("cdchangerschedule: already have a long"
1348                                " timeout!\n");
1349
1350                 if ((changer->flags & CHANGER_SHORT_TMOUT_SCHED) == 0) {
1351                         callout_reset(&changer->short_handle,
1352                                         changer_min_busy_seconds * hz,
1353                                         cdshorttimeout, changer);
1354                         changer->flags |= CHANGER_SHORT_TMOUT_SCHED;
1355                 } else
1356                         printf("cdchangerschedule: already have a short "
1357                                "timeout!\n");
1358
1359                 /*
1360                  * We just scheduled timeouts, no need to schedule
1361                  * more.
1362                  */
1363                 changer->flags &= ~CHANGER_NEED_TIMEOUT;
1364
1365         }
1366         crit_exit();
1367 }
1368
1369 static int
1370 cdrunccb(union ccb *ccb, int (*error_routine)(union ccb *ccb,
1371                                               u_int32_t cam_flags,
1372                                               u_int32_t sense_flags),
1373          u_int32_t cam_flags, u_int32_t sense_flags)
1374 {
1375         struct cd_softc *softc;
1376         struct cam_periph *periph;
1377         int error;
1378
1379         periph = xpt_path_periph(ccb->ccb_h.path);
1380         softc = (struct cd_softc *)periph->softc;
1381
1382         error = cam_periph_runccb(ccb, error_routine, cam_flags, sense_flags,
1383                                   &softc->device_stats);
1384
1385         if (softc->flags & CD_FLAG_CHANGER)
1386                 cdchangerschedule(softc);
1387
1388         return(error);
1389 }
1390
1391 static union ccb *
1392 cdgetccb(struct cam_periph *periph, u_int32_t priority)
1393 {
1394         struct cd_softc *softc;
1395
1396         softc = (struct cd_softc *)periph->softc;
1397
1398         if (softc->flags & CD_FLAG_CHANGER) {
1399                 crit_enter();
1400
1401                 /*
1402                  * This should work the first time this device is woken up,
1403                  * but just in case it doesn't, we use a while loop.
1404                  */
1405                 while ((softc->flags & CD_FLAG_ACTIVE) == 0) {
1406                         /*
1407                          * If this changer isn't already queued, queue it up.
1408                          */
1409                         if (softc->pinfo.index == CAM_UNQUEUED_INDEX) {
1410                                 softc->pinfo.priority = 1;
1411                                 softc->pinfo.generation =
1412                                         ++softc->changer->devq.generation;
1413                                 camq_insert(&softc->changer->devq,
1414                                             (cam_pinfo *)softc);
1415                         }
1416                         if (((softc->changer->flags & CHANGER_TIMEOUT_SCHED)==0)
1417                          && ((softc->changer->flags & CHANGER_NEED_TIMEOUT)==0)
1418                          && ((softc->changer->flags
1419                               & CHANGER_SHORT_TMOUT_SCHED)==0)) {
1420                                 softc->changer->flags |= CHANGER_MANUAL_CALL;
1421                                 cdrunchangerqueue(softc->changer);
1422                         } else
1423                                 tsleep(&softc->changer, 0, "cgticb", 0);
1424                 }
1425                 crit_exit();
1426         }
1427         return(cam_periph_getccb(periph, priority));
1428 }
1429
1430 /*
1431  * Actually translate the requested transfer into one the physical driver
1432  * can understand.  The transfer is described by a buf and will include
1433  * only one physical transfer.
1434  */
1435 static void
1436 cdstrategy(dev_t dev, struct bio *bio)
1437 {
1438         struct buf *bp = bio->bio_buf;
1439         struct cam_periph *periph;
1440         struct cd_softc *softc;
1441         u_int  unit, part;
1442
1443         unit = dkunit(dev);
1444         part = dkpart(dev);
1445         periph = cam_extend_get(cdperiphs, unit);
1446         if (periph == NULL) {
1447                 bp->b_error = ENXIO;
1448                 goto bad;
1449         }
1450
1451         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("entering cdstrategy\n"));
1452
1453         softc = (struct cd_softc *)periph->softc;
1454
1455         /*
1456          * Mask interrupts so that the pack cannot be invalidated until
1457          * after we are in the queue.  Otherwise, we might not properly
1458          * clean up one of the buffers.
1459          */
1460         crit_enter();
1461
1462         /*
1463          * If the device has been made invalid, error out
1464          */
1465         if ((softc->flags & CD_FLAG_INVALID)) {
1466                 crit_exit();
1467                 bp->b_error = ENXIO;
1468                 goto bad;
1469         }
1470
1471         /*
1472          * If we don't have valid media, look for it before trying to
1473          * schedule the I/O.
1474          */
1475         if ((softc->flags & CD_FLAG_VALID_MEDIA) == 0) {
1476                 int error;
1477
1478                 error = cdcheckmedia(periph);
1479                 if (error != 0) {
1480                         crit_exit();
1481                         bp->b_error = error;
1482                         goto bad;
1483                 }
1484         }
1485
1486         /*
1487          * Place it in the queue of disk activities for this disk
1488          */
1489         bioqdisksort(&softc->bio_queue, bio);
1490
1491         crit_exit();
1492
1493         /*
1494          * Schedule ourselves for performing the work.  We do things
1495          * differently for changers.
1496          */
1497         if ((softc->flags & CD_FLAG_CHANGER) == 0)
1498                 xpt_schedule(periph, /* XXX priority */1);
1499         else
1500                 cdschedule(periph, /* priority */ 1);
1501
1502         return;
1503 bad:
1504         bp->b_flags |= B_ERROR;
1505         /*
1506          * Correctly set the buf to indicate a completed xfer
1507          */
1508         bp->b_resid = bp->b_bcount;
1509         biodone(bio);
1510 }
1511
1512 static void
1513 cdstart(struct cam_periph *periph, union ccb *start_ccb)
1514 {
1515         struct cd_softc *softc;
1516         struct bio *bio;
1517         struct buf *bp;
1518         struct ccb_scsiio *csio;
1519         struct scsi_read_capacity_data *rcap;
1520
1521         softc = (struct cd_softc *)periph->softc;
1522
1523         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("entering cdstart\n"));
1524
1525         switch (softc->state) {
1526         case CD_STATE_NORMAL:
1527         {
1528                 crit_enter();
1529                 bio = bioq_first(&softc->bio_queue);
1530                 if (periph->immediate_priority <= periph->pinfo.priority) {
1531                         start_ccb->ccb_h.ccb_state = CD_CCB_WAITING;
1532
1533                         SLIST_INSERT_HEAD(&periph->ccb_list, &start_ccb->ccb_h,
1534                                           periph_links.sle);
1535                         periph->immediate_priority = CAM_PRIORITY_NONE;
1536                         crit_exit();
1537                         wakeup(&periph->ccb_list);
1538                 } else if (bio == NULL) {
1539                         crit_exit();
1540                         xpt_release_ccb(start_ccb);
1541                 } else {
1542                         bp = bio->bio_buf;
1543                         bioq_remove(&softc->bio_queue, bio);
1544
1545                         devstat_start_transaction(&softc->device_stats);
1546
1547                         KKASSERT(bio->bio_offset % softc->params.blksize == 0);
1548
1549                         scsi_read_write(&start_ccb->csio,
1550                                         /*retries*/4,
1551                                         /* cbfcnp */ cddone,
1552                                         (bp->b_flags & B_ORDERED) != 0 ?
1553                                             MSG_ORDERED_Q_TAG :
1554                                             MSG_SIMPLE_Q_TAG,
1555                                         /* read */(bp->b_cmd == BUF_CMD_READ),
1556                                         /* byte2 */ 0,
1557                                         /* minimum_cmd_size */ 10,
1558                                         /* lba */
1559                                         bio->bio_offset / softc->params.blksize,
1560                                         bp->b_bcount / softc->params.blksize,
1561                                         /* data_ptr */ bp->b_data,
1562                                         /* dxfer_len */ bp->b_bcount,
1563                                         /* sense_len */ SSD_FULL_SIZE,
1564                                         /* timeout */ 30000);
1565                         start_ccb->ccb_h.ccb_state = CD_CCB_BUFFER_IO;
1566
1567
1568                         /*
1569                          * Block out any asyncronous callbacks
1570                          * while we touch the pending ccb list.
1571                          */
1572                         LIST_INSERT_HEAD(&softc->pending_ccbs,
1573                                          &start_ccb->ccb_h, periph_links.le);
1574
1575                         /* We expect a unit attention from this device */
1576                         if ((softc->flags & CD_FLAG_RETRY_UA) != 0) {
1577                                 start_ccb->ccb_h.ccb_state |= CD_CCB_RETRY_UA;
1578                                 softc->flags &= ~CD_FLAG_RETRY_UA;
1579                         }
1580
1581                         start_ccb->ccb_h.ccb_bio = bio;
1582                         bio = bioq_first(&softc->bio_queue);
1583                         crit_exit();
1584
1585                         xpt_action(start_ccb);
1586                 }
1587                 if (bio != NULL) {
1588                         /* Have more work to do, so ensure we stay scheduled */
1589                         xpt_schedule(periph, /* XXX priority */1);
1590                 }
1591                 break;
1592         }
1593         case CD_STATE_PROBE:
1594         {
1595
1596                 rcap = malloc(sizeof(*rcap), M_TEMP, M_INTWAIT);
1597                 csio = &start_ccb->csio;
1598                 scsi_read_capacity(csio,
1599                                    /*retries*/1,
1600                                    cddone,
1601                                    MSG_SIMPLE_Q_TAG,
1602                                    rcap,
1603                                    SSD_FULL_SIZE,
1604                                    /*timeout*/20000);
1605                 start_ccb->ccb_h.ccb_bio = NULL;
1606                 start_ccb->ccb_h.ccb_state = CD_CCB_PROBE;
1607                 xpt_action(start_ccb);
1608                 break;
1609         }
1610         }
1611 }
1612
1613 static void
1614 cddone(struct cam_periph *periph, union ccb *done_ccb)
1615 {
1616         struct cd_softc *softc;
1617         struct ccb_scsiio *csio;
1618
1619         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("entering cddone\n"));
1620
1621         softc = (struct cd_softc *)periph->softc;
1622         csio = &done_ccb->csio;
1623
1624         switch (csio->ccb_h.ccb_state & CD_CCB_TYPE_MASK) {
1625         case CD_CCB_BUFFER_IO:
1626         {
1627                 struct buf      *bp;
1628                 struct bio      *bio;
1629                 int             error;
1630
1631                 bio = (struct bio *)done_ccb->ccb_h.ccb_bio;
1632                 bp = bio->bio_buf;
1633                 error = 0;
1634
1635                 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1636                         int sf;
1637
1638                         if ((done_ccb->ccb_h.ccb_state & CD_CCB_RETRY_UA) != 0)
1639                                 sf = SF_RETRY_UA;
1640                         else
1641                                 sf = 0;
1642
1643                         /* Retry selection timeouts */
1644                         sf |= SF_RETRY_SELTO;
1645
1646                         if ((error = cderror(done_ccb, 0, sf)) == ERESTART) {
1647                                 /*
1648                                  * A retry was scheuled, so
1649                                  * just return.
1650                                  */
1651                                 return;
1652                         }
1653                 }
1654
1655                 if (error != 0) {
1656                         struct bio *q_bio;
1657                         struct buf *q_bp;
1658
1659                         xpt_print_path(periph->path);
1660                         printf("cddone: got error %#x back\n", error);
1661                         crit_enter();
1662                         while ((q_bio = bioq_first(&softc->bio_queue)) != NULL) {
1663                                 bioq_remove(&softc->bio_queue, q_bio);
1664                                 q_bp = q_bio->bio_buf;
1665                                 q_bp->b_resid = q_bp->b_bcount;
1666                                 q_bp->b_error = EIO;
1667                                 q_bp->b_flags |= B_ERROR;
1668                                 biodone(q_bio);
1669                         }
1670                         crit_exit();
1671                         bp->b_resid = bp->b_bcount;
1672                         bp->b_error = error;
1673                         bp->b_flags |= B_ERROR;
1674                         cam_release_devq(done_ccb->ccb_h.path,
1675                                          /*relsim_flags*/0,
1676                                          /*reduction*/0,
1677                                          /*timeout*/0,
1678                                          /*getcount_only*/0);
1679
1680                 } else {
1681                         bp->b_resid = csio->resid;
1682                         bp->b_error = 0;
1683                         if (bp->b_resid != 0) {
1684                                 /* Short transfer ??? */
1685                                 bp->b_flags |= B_ERROR;
1686                         }
1687                 }
1688
1689                 /*
1690                  * Block out any asyncronous callbacks
1691                  * while we touch the pending ccb list.
1692                  */
1693                 crit_enter();
1694                 LIST_REMOVE(&done_ccb->ccb_h, periph_links.le);
1695                 crit_exit();
1696
1697                 if (softc->flags & CD_FLAG_CHANGER)
1698                         cdchangerschedule(softc);
1699
1700                 devstat_end_transaction_buf(&softc->device_stats, bp);
1701                 biodone(bio);
1702                 break;
1703         }
1704         case CD_CCB_PROBE:
1705         {
1706                 struct     scsi_read_capacity_data *rdcap;
1707                 char       announce_buf[120]; /*
1708                                                * Currently (9/30/97) the
1709                                                * longest possible announce
1710                                                * buffer is 108 bytes, for the
1711                                                * first error case below.
1712                                                * That is 39 bytes for the
1713                                                * basic string, 16 bytes for the
1714                                                * biggest sense key (hardware
1715                                                * error), 52 bytes for the
1716                                                * text of the largest sense
1717                                                * qualifier valid for a CDROM,
1718                                                * (0x72, 0x03 or 0x04,
1719                                                * 0x03), and one byte for the
1720                                                * null terminating character.
1721                                                * To allow for longer strings,
1722                                                * the announce buffer is 120
1723                                                * bytes.
1724                                                */
1725                 struct     cd_params *cdp;
1726
1727                 cdp = &softc->params;
1728
1729                 rdcap = (struct scsi_read_capacity_data *)csio->data_ptr;
1730
1731                 cdp->disksize = scsi_4btoul (rdcap->addr) + 1;
1732                 cdp->blksize = scsi_4btoul (rdcap->length);
1733
1734                 if ((csio->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP) {
1735
1736                         snprintf(announce_buf, sizeof(announce_buf),
1737                                 "cd present [%lu x %lu byte records]",
1738                                 cdp->disksize, (u_long)cdp->blksize);
1739
1740                 } else {
1741                         int     error;
1742                         /*
1743                          * Retry any UNIT ATTENTION type errors.  They
1744                          * are expected at boot.
1745                          */
1746                         error = cderror(done_ccb, 0, SF_RETRY_UA |
1747                                         SF_NO_PRINT | SF_RETRY_SELTO);
1748                         if (error == ERESTART) {
1749                                 /*
1750                                  * A retry was scheuled, so
1751                                  * just return.
1752                                  */
1753                                 return;
1754                         } else if (error != 0) {
1755
1756                                 struct scsi_sense_data *sense;
1757                                 int asc, ascq;
1758                                 int sense_key, error_code;
1759                                 int have_sense;
1760                                 cam_status status;
1761                                 struct ccb_getdev cgd;
1762
1763                                 /* Don't wedge this device's queue */
1764                                 cam_release_devq(done_ccb->ccb_h.path,
1765                                                  /*relsim_flags*/0,
1766                                                  /*reduction*/0,
1767                                                  /*timeout*/0,
1768                                                  /*getcount_only*/0);
1769
1770                                 status = done_ccb->ccb_h.status;
1771
1772                                 xpt_setup_ccb(&cgd.ccb_h,
1773                                               done_ccb->ccb_h.path,
1774                                               /* priority */ 1);
1775                                 cgd.ccb_h.func_code = XPT_GDEV_TYPE;
1776                                 xpt_action((union ccb *)&cgd);
1777
1778                                 if (((csio->ccb_h.flags & CAM_SENSE_PHYS) != 0)
1779                                  || ((csio->ccb_h.flags & CAM_SENSE_PTR) != 0)
1780                                  || ((status & CAM_AUTOSNS_VALID) == 0))
1781                                         have_sense = FALSE;
1782                                 else
1783                                         have_sense = TRUE;
1784
1785                                 if (have_sense) {
1786                                         sense = &csio->sense_data;
1787                                         scsi_extract_sense(sense, &error_code,
1788                                                            &sense_key,
1789                                                            &asc, &ascq);
1790                                 }
1791                                 /*
1792                                  * Attach to anything that claims to be a
1793                                  * CDROM or WORM device, as long as it
1794                                  * doesn't return a "Logical unit not
1795                                  * supported" (0x25) error.
1796                                  */
1797                                 if ((have_sense) && (asc != 0x25)
1798                                  && (error_code == SSD_CURRENT_ERROR))
1799                                         snprintf(announce_buf,
1800                                             sizeof(announce_buf),
1801                                                 "Attempt to query device "
1802                                                 "size failed: %s, %s",
1803                                                 scsi_sense_key_text[sense_key],
1804                                                 scsi_sense_desc(asc,ascq,
1805                                                                 &cgd.inq_data));
1806                                 else if ((have_sense == 0)
1807                                       && ((status & CAM_STATUS_MASK) ==
1808                                            CAM_SCSI_STATUS_ERROR)
1809                                       && (csio->scsi_status ==
1810                                           SCSI_STATUS_BUSY)) {
1811                                         snprintf(announce_buf,
1812                                             sizeof(announce_buf),
1813                                             "Attempt to query device "
1814                                             "size failed: SCSI status: BUSY");
1815                                 } else if (SID_TYPE(&cgd.inq_data) == T_CDROM) {
1816                                         /*
1817                                          * We only print out an error for
1818                                          * CDROM type devices.  For WORM
1819                                          * devices, we don't print out an
1820                                          * error since a few WORM devices
1821                                          * don't support CDROM commands.
1822                                          * If we have sense information, go
1823                                          * ahead and print it out.
1824                                          * Otherwise, just say that we
1825                                          * couldn't attach.
1826                                          */
1827
1828                                         /*
1829                                          * Just print out the error, not
1830                                          * the full probe message, when we
1831                                          * don't attach.
1832                                          */
1833                                         if (have_sense)
1834                                                 scsi_sense_print(
1835                                                         &done_ccb->csio);
1836                                         else {
1837                                                 xpt_print_path(periph->path);
1838                                                 printf("got CAM status %#x\n",
1839                                                        done_ccb->ccb_h.status);
1840                                         }
1841                                         xpt_print_path(periph->path);
1842                                         printf("fatal error, failed"
1843                                                " to attach to device\n");
1844
1845                                         /*
1846                                          * Invalidate this peripheral.
1847                                          */
1848                                         cam_periph_invalidate(periph);
1849
1850                                         announce_buf[0] = '\0';
1851                                 } else {
1852
1853                                         /*
1854                                          * Invalidate this peripheral.
1855                                          */
1856                                         cam_periph_invalidate(periph);
1857                                         announce_buf[0] = '\0';
1858                                 }
1859                         }
1860                 }
1861                 free(rdcap, M_TEMP);
1862                 if (announce_buf[0] != '\0') {
1863                         xpt_announce_periph(periph, announce_buf);
1864                         if (softc->flags & CD_FLAG_CHANGER)
1865                                 cdchangerschedule(softc);
1866                         /*
1867                          * Create our sysctl variables, now that we know
1868                          * we have successfully attached.
1869                          */
1870                         taskqueue_enqueue(taskqueue_thread[mycpuid],
1871                             &softc->sysctl_task);
1872                 }
1873                 softc->state = CD_STATE_NORMAL;
1874                 /*
1875                  * Since our peripheral may be invalidated by an error
1876                  * above or an external event, we must release our CCB
1877                  * before releasing the probe lock on the peripheral.
1878                  * The peripheral will only go away once the last lock
1879                  * is removed, and we need it around for the CCB release
1880                  * operation.
1881                  */
1882                 xpt_release_ccb(done_ccb);
1883                 cam_periph_unlock(periph);
1884                 return;
1885         }
1886         case CD_CCB_WAITING:
1887         {
1888                 /* Caller will release the CCB */
1889                 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE,
1890                           ("trying to wakeup ccbwait\n"));
1891
1892                 wakeup(&done_ccb->ccb_h.cbfcnp);
1893                 return;
1894         }
1895         default:
1896                 break;
1897         }
1898         xpt_release_ccb(done_ccb);
1899 }
1900
1901 static union cd_pages *
1902 cdgetpage(struct cd_mode_params *mode_params)
1903 {
1904         union cd_pages *page;
1905
1906         if (mode_params->cdb_size == 10)
1907                 page = (union cd_pages *)find_mode_page_10(
1908                         (struct scsi_mode_header_10 *)mode_params->mode_buf);
1909         else
1910                 page = (union cd_pages *)find_mode_page_6(
1911                         (struct scsi_mode_header_6 *)mode_params->mode_buf);
1912
1913         return (page);
1914 }
1915
1916 static int
1917 cdgetpagesize(int page_num)
1918 {
1919         int i;
1920
1921         for (i = 0; i < (sizeof(cd_page_size_table)/
1922             sizeof(cd_page_size_table[0])); i++) {
1923                 if (cd_page_size_table[i].page == page_num)
1924                         return (cd_page_size_table[i].page_size);
1925         }
1926         return (-1);
1927 }
1928
1929 static int
1930 cdioctl(dev_t dev, u_long cmd, caddr_t addr, int flag, struct thread *td)
1931 {
1932
1933         struct  cam_periph *periph;
1934         struct  cd_softc *softc;
1935         int     error, unit;
1936
1937         unit = dkunit(dev);
1938
1939         periph = cam_extend_get(cdperiphs, unit);
1940         if (periph == NULL)
1941                 return(ENXIO);
1942
1943         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("entering cdioctl\n"));
1944
1945         softc = (struct cd_softc *)periph->softc;
1946
1947         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE,
1948                   ("trying to do ioctl %#lx\n", cmd));
1949
1950         error = cam_periph_lock(periph, PCATCH);
1951
1952         if (error != 0)
1953                 return(error);
1954
1955         /*
1956          * If we don't have media loaded, check for it.  If still don't
1957          * have media loaded, we can only do a load or eject.
1958          */
1959         if (((softc->flags & CD_FLAG_VALID_MEDIA) == 0)
1960             && ((cmd != CDIOCCLOSE)
1961             && (cmd != CDIOCEJECT))) {
1962                 error = cdcheckmedia(periph);
1963                 if (error != 0) {
1964                         cam_periph_unlock(periph);
1965                         return (error);
1966                 }
1967         }
1968
1969         switch (cmd) {
1970
1971         case CDIOCPLAYTRACKS:
1972                 {
1973                         struct ioc_play_track *args
1974                             = (struct ioc_play_track *) addr;
1975                         struct cd_mode_params params;
1976                         union cd_pages *page;
1977
1978                         params.alloc_len = sizeof(union cd_mode_data_6_10);
1979                         params.mode_buf = malloc(params.alloc_len, M_TEMP,
1980                                                  M_WAITOK | M_ZERO);
1981
1982                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
1983                                   ("trying to do CDIOCPLAYTRACKS\n"));
1984
1985                         error = cdgetmode(periph, &params, AUDIO_PAGE);
1986                         if (error) {
1987                                 free(params.mode_buf, M_TEMP);
1988                                 break;
1989                         }
1990                         page = cdgetpage(&params);
1991
1992                         page->audio.flags &= ~CD_PA_SOTC;
1993                         page->audio.flags |= CD_PA_IMMED;
1994                         error = cdsetmode(periph, &params);
1995                         free(params.mode_buf, M_TEMP);
1996                         if (error)
1997                                 break;
1998
1999                         /*
2000                          * This was originally implemented with the PLAY
2001                          * AUDIO TRACK INDEX command, but that command was
2002                          * deprecated after SCSI-2.  Most (all?) SCSI CDROM
2003                          * drives support it but ATAPI and ATAPI-derivative
2004                          * drives don't seem to support it.  So we keep a
2005                          * cache of the table of contents and translate
2006                          * track numbers to MSF format.
2007                          */
2008                         if (softc->flags & CD_FLAG_VALID_TOC) {
2009                                 union msf_lba *sentry, *eentry;
2010                                 int st, et;
2011
2012                                 if (args->end_track <
2013                                     softc->toc.header.ending_track + 1)
2014                                         args->end_track++;
2015                                 if (args->end_track >
2016                                     softc->toc.header.ending_track + 1)
2017                                         args->end_track =
2018                                             softc->toc.header.ending_track + 1;
2019                                 st = args->start_track -
2020                                         softc->toc.header.starting_track;
2021                                 et = args->end_track -
2022                                         softc->toc.header.starting_track;
2023                                 if ((st < 0)
2024                                  || (et < 0)
2025                                  || (st > (softc->toc.header.ending_track -
2026                                      softc->toc.header.starting_track))) {
2027                                         error = EINVAL;
2028                                         break;
2029                                 }
2030                                 sentry = &softc->toc.entries[st].addr;
2031                                 eentry = &softc->toc.entries[et].addr;
2032                                 error = cdplaymsf(periph,
2033                                                   sentry->msf.minute,
2034                                                   sentry->msf.second,
2035                                                   sentry->msf.frame,
2036                                                   eentry->msf.minute,
2037                                                   eentry->msf.second,
2038                                                   eentry->msf.frame);
2039                         } else {
2040                                 /*
2041                                  * If we don't have a valid TOC, try the
2042                                  * play track index command.  It is part of
2043                                  * the SCSI-2 spec, but was removed in the
2044                                  * MMC specs.  ATAPI and ATAPI-derived
2045                                  * drives don't support it.
2046                                  */
2047                                 if (softc->quirks & CD_Q_BCD_TRACKS) {
2048                                         args->start_track =
2049                                                 bin2bcd(args->start_track);
2050                                         args->end_track =
2051                                                 bin2bcd(args->end_track);
2052                                 }
2053                                 error = cdplaytracks(periph,
2054                                                      args->start_track,
2055                                                      args->start_index,
2056                                                      args->end_track,
2057                                                      args->end_index);
2058                         }
2059                 }
2060                 break;
2061         case CDIOCPLAYMSF:
2062                 {
2063                         struct ioc_play_msf *args
2064                                 = (struct ioc_play_msf *) addr;
2065                         struct cd_mode_params params;
2066                         union cd_pages *page;
2067
2068                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2069                         params.mode_buf = malloc(params.alloc_len, M_TEMP,
2070                                                  M_WAITOK | M_ZERO);
2071
2072                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2073                                   ("trying to do CDIOCPLAYMSF\n"));
2074
2075                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2076                         if (error) {
2077                                 free(params.mode_buf, M_TEMP);
2078                                 break;
2079                         }
2080                         page = cdgetpage(&params);
2081
2082                         page->audio.flags &= ~CD_PA_SOTC;
2083                         page->audio.flags |= CD_PA_IMMED;
2084                         error = cdsetmode(periph, &params);
2085                         free(params.mode_buf, M_TEMP);
2086                         if (error)
2087                                 break;
2088                         error = cdplaymsf(periph,
2089                                           args->start_m,
2090                                           args->start_s,
2091                                           args->start_f,
2092                                           args->end_m,
2093                                           args->end_s,
2094                                           args->end_f);
2095                 }
2096                 break;
2097         case CDIOCPLAYBLOCKS:
2098                 {
2099                         struct ioc_play_blocks *args
2100                                 = (struct ioc_play_blocks *) addr;
2101                         struct cd_mode_params params;
2102                         union cd_pages *page;
2103
2104                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2105                                   ("trying to do CDIOCPLAYBLOCKS\n"));
2106
2107                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2108                         params.mode_buf = malloc(params.alloc_len, M_TEMP,
2109                                                  M_WAITOK | M_ZERO);
2110
2111                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2112                         if (error) {
2113                                 free(params.mode_buf, M_TEMP);
2114                                 break;
2115                         }
2116                         page = cdgetpage(&params);
2117
2118                         page->audio.flags &= ~CD_PA_SOTC;
2119                         page->audio.flags |= CD_PA_IMMED;
2120                         error = cdsetmode(periph, &params);
2121                         free(params.mode_buf, M_TEMP);
2122                         if (error)
2123                                 break;
2124                         error = cdplay(periph, args->blk, args->len);
2125                 }
2126                 break;
2127         case CDIOCREADSUBCHANNEL:
2128                 {
2129                         struct ioc_read_subchannel *args
2130                                 = (struct ioc_read_subchannel *) addr;
2131                         struct cd_sub_channel_info *data;
2132                         u_int32_t len = args->data_len;
2133
2134                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2135                                   ("trying to do CDIOCREADSUBCHANNEL\n"));
2136
2137                         data = malloc(sizeof(struct cd_sub_channel_info),
2138                                       M_TEMP, M_WAITOK);
2139
2140                         if ((len > sizeof(struct cd_sub_channel_info)) ||
2141                             (len < sizeof(struct cd_sub_channel_header))) {
2142                                 printf(
2143                                         "scsi_cd: cdioctl: "
2144                                         "cdioreadsubchannel: error, len=%d\n",
2145                                         len);
2146                                 error = EINVAL;
2147                                 free(data, M_TEMP);
2148                                 break;
2149                         }
2150
2151                         if (softc->quirks & CD_Q_BCD_TRACKS)
2152                                 args->track = bin2bcd(args->track);
2153
2154                         error = cdreadsubchannel(periph, args->address_format,
2155                                 args->data_format, args->track, data, len);
2156
2157                         if (error) {
2158                                 free(data, M_TEMP);
2159                                 break;
2160                         }
2161                         if (softc->quirks & CD_Q_BCD_TRACKS)
2162                                 data->what.track_info.track_number =
2163                                     bcd2bin(data->what.track_info.track_number);
2164                         len = min(len, ((data->header.data_len[0] << 8) +
2165                                 data->header.data_len[1] +
2166                                 sizeof(struct cd_sub_channel_header)));
2167                         if (copyout(data, args->data, len) != 0) {
2168                                 error = EFAULT;
2169                         }
2170                         free(data, M_TEMP);
2171                 }
2172                 break;
2173
2174         case CDIOREADTOCHEADER:
2175                 {
2176                         struct ioc_toc_header *th;
2177
2178                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2179                                   ("trying to do CDIOREADTOCHEADER\n"));
2180
2181                         th = malloc(sizeof(struct ioc_toc_header), M_TEMP,
2182                                     M_WAITOK);
2183                         error = cdreadtoc(periph, 0, 0, (u_int8_t *)th,
2184                                           sizeof (*th), /*sense_flags*/0);
2185                         if (error) {
2186                                 free(th, M_TEMP);
2187                                 break;
2188                         }
2189                         if (softc->quirks & CD_Q_BCD_TRACKS) {
2190                                 /* we are going to have to convert the BCD
2191                                  * encoding on the cd to what is expected
2192                                  */
2193                                 th->starting_track =
2194                                         bcd2bin(th->starting_track);
2195                                 th->ending_track = bcd2bin(th->ending_track);
2196                         }
2197                         th->len = ntohs(th->len);
2198                         bcopy(th, addr, sizeof(*th));
2199                         free(th, M_TEMP);
2200                 }
2201                 break;
2202         case CDIOREADTOCENTRYS:
2203                 {
2204                         struct cd_tocdata *data;
2205                         struct cd_toc_single *lead;
2206                         struct ioc_read_toc_entry *te =
2207                                 (struct ioc_read_toc_entry *) addr;
2208                         struct ioc_toc_header *th;
2209                         u_int32_t len, readlen, idx, num;
2210                         u_int32_t starting_track = te->starting_track;
2211
2212                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2213                                   ("trying to do CDIOREADTOCENTRYS\n"));
2214
2215                         data = malloc(sizeof(*data), M_TEMP, M_WAITOK);
2216                         lead = malloc(sizeof(*lead), M_TEMP, M_WAITOK);
2217
2218                         if (te->data_len < sizeof(struct cd_toc_entry)
2219                          || (te->data_len % sizeof(struct cd_toc_entry)) != 0
2220                          || (te->address_format != CD_MSF_FORMAT
2221                           && te->address_format != CD_LBA_FORMAT)) {
2222                                 error = EINVAL;
2223                                 printf("scsi_cd: error in readtocentries, "
2224                                        "returning EINVAL\n");
2225                                 free(data, M_TEMP);
2226                                 free(lead, M_TEMP);
2227                                 break;
2228                         }
2229
2230                         th = &data->header;
2231                         error = cdreadtoc(periph, 0, 0, (u_int8_t *)th,
2232                                           sizeof (*th), /*sense_flags*/0);
2233                         if (error) {
2234                                 free(data, M_TEMP);
2235                                 free(lead, M_TEMP);
2236                                 break;
2237                         }
2238
2239                         if (softc->quirks & CD_Q_BCD_TRACKS) {
2240                                 /* we are going to have to convert the BCD
2241                                  * encoding on the cd to what is expected
2242                                  */
2243                                 th->starting_track =
2244                                     bcd2bin(th->starting_track);
2245                                 th->ending_track = bcd2bin(th->ending_track);
2246                         }
2247
2248                         if (starting_track == 0)
2249                                 starting_track = th->starting_track;
2250                         else if (starting_track == LEADOUT)
2251                                 starting_track = th->ending_track + 1;
2252                         else if (starting_track < th->starting_track ||
2253                                  starting_track > th->ending_track + 1) {
2254                                 printf("scsi_cd: error in readtocentries, "
2255                                        "returning EINVAL\n");
2256                                 free(data, M_TEMP);
2257                                 free(lead, M_TEMP);
2258                                 error = EINVAL;
2259                                 break;
2260                         }
2261
2262                         /* calculate reading length without leadout entry */
2263                         readlen = (th->ending_track - starting_track + 1) *
2264                                   sizeof(struct cd_toc_entry);
2265
2266                         /* and with leadout entry */
2267                         len = readlen + sizeof(struct cd_toc_entry);
2268                         if (te->data_len < len) {
2269                                 len = te->data_len;
2270                                 if (readlen > len)
2271                                         readlen = len;
2272                         }
2273                         if (len > sizeof(data->entries)) {
2274                                 printf("scsi_cd: error in readtocentries, "
2275                                        "returning EINVAL\n");
2276                                 error = EINVAL;
2277                                 free(data, M_TEMP);
2278                                 free(lead, M_TEMP);
2279                                 break;
2280                         }
2281                         num = len / sizeof(struct cd_toc_entry);
2282
2283                         if (readlen > 0) {
2284                                 error = cdreadtoc(periph, te->address_format,
2285                                                   starting_track,
2286                                                   (u_int8_t *)data,
2287                                                   readlen + sizeof (*th),
2288                                                   /*sense_flags*/0);
2289                                 if (error) {
2290                                         free(data, M_TEMP);
2291                                         free(lead, M_TEMP);
2292                                         break;
2293                                 }
2294                         }
2295
2296                         /* make leadout entry if needed */
2297                         idx = starting_track + num - 1;
2298                         if (softc->quirks & CD_Q_BCD_TRACKS)
2299                                 th->ending_track = bcd2bin(th->ending_track);
2300                         if (idx == th->ending_track + 1) {
2301                                 error = cdreadtoc(periph, te->address_format,
2302                                                   LEADOUT, (u_int8_t *)lead,
2303                                                   sizeof(*lead),
2304                                                   /*sense_flags*/0);
2305                                 if (error) {
2306                                         free(data, M_TEMP);
2307                                         free(lead, M_TEMP);
2308                                         break;
2309                                 }
2310                                 data->entries[idx - starting_track] =
2311                                         lead->entry;
2312                         }
2313                         if (softc->quirks & CD_Q_BCD_TRACKS) {
2314                                 for (idx = 0; idx < num - 1; idx++) {
2315                                         data->entries[idx].track =
2316                                             bcd2bin(data->entries[idx].track);
2317                                 }
2318                         }
2319
2320                         error = copyout(data->entries, te->data, len);
2321                         free(data, M_TEMP);
2322                         free(lead, M_TEMP);
2323                 }
2324                 break;
2325         case CDIOREADTOCENTRY:
2326                 {
2327                         struct cd_toc_single *data;
2328                         struct ioc_read_toc_single_entry *te =
2329                                 (struct ioc_read_toc_single_entry *) addr;
2330                         struct ioc_toc_header *th;
2331                         u_int32_t track;
2332
2333                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2334                                   ("trying to do CDIOREADTOCENTRY\n"));
2335
2336                         data = malloc(sizeof(*data), M_TEMP, M_WAITOK);
2337
2338                         if (te->address_format != CD_MSF_FORMAT
2339                             && te->address_format != CD_LBA_FORMAT) {
2340                                 printf("error in readtocentry, "
2341                                        " returning EINVAL\n");
2342                                 free(data, M_TEMP);
2343                                 error = EINVAL;
2344                                 break;
2345                         }
2346
2347                         th = &data->header;
2348                         error = cdreadtoc(periph, 0, 0, (u_int8_t *)th,
2349                                           sizeof (*th), /*sense_flags*/0);
2350                         if (error) {
2351                                 free(data, M_TEMP);
2352                                 break;
2353                         }
2354
2355                         if (softc->quirks & CD_Q_BCD_TRACKS) {
2356                                 /* we are going to have to convert the BCD
2357                                  * encoding on the cd to what is expected
2358                                  */
2359                                 th->starting_track =
2360                                     bcd2bin(th->starting_track);
2361                                 th->ending_track = bcd2bin(th->ending_track);
2362                         }
2363                         track = te->track;
2364                         if (track == 0)
2365                                 track = th->starting_track;
2366                         else if (track == LEADOUT)
2367                                 /* OK */;
2368                         else if (track < th->starting_track ||
2369                                  track > th->ending_track + 1) {
2370                                 printf("error in readtocentry, "
2371                                        " returning EINVAL\n");
2372                                 free(data, M_TEMP);
2373                                 error = EINVAL;
2374                                 break;
2375                         }
2376
2377                         error = cdreadtoc(periph, te->address_format, track,
2378                                           (u_int8_t *)data, sizeof(*data),
2379                                           /*sense_flags*/0);
2380                         if (error) {
2381                                 free(data, M_TEMP);
2382                                 break;
2383                         }
2384
2385                         if (softc->quirks & CD_Q_BCD_TRACKS)
2386                                 data->entry.track = bcd2bin(data->entry.track);
2387                         bcopy(&data->entry, &te->entry,
2388                               sizeof(struct cd_toc_entry));
2389                         free(data, M_TEMP);
2390                 }
2391                 break;
2392         case CDIOCSETPATCH:
2393                 {
2394                         struct ioc_patch *arg = (struct ioc_patch *)addr;
2395                         struct cd_mode_params params;
2396                         union cd_pages *page;
2397
2398                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2399                                   ("trying to do CDIOCSETPATCH\n"));
2400
2401                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2402                         params.mode_buf = malloc(params.alloc_len, M_TEMP,
2403                                                  M_WAITOK | M_ZERO);
2404                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2405                         if (error) {
2406                                 free(params.mode_buf, M_TEMP);
2407                                 break;
2408                         }
2409                         page = cdgetpage(&params);
2410
2411                         page->audio.port[LEFT_PORT].channels =
2412                                 arg->patch[0];
2413                         page->audio.port[RIGHT_PORT].channels =
2414                                 arg->patch[1];
2415                         page->audio.port[2].channels = arg->patch[2];
2416                         page->audio.port[3].channels = arg->patch[3];
2417                         error = cdsetmode(periph, &params);
2418                         free(params.mode_buf, M_TEMP);
2419                 }
2420                 break;
2421         case CDIOCGETVOL:
2422                 {
2423                         struct ioc_vol *arg = (struct ioc_vol *) addr;
2424                         struct cd_mode_params params;
2425                         union cd_pages *page;
2426
2427                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2428                                   ("trying to do CDIOCGETVOL\n"));
2429
2430                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2431                         params.mode_buf = malloc(params.alloc_len, M_TEMP,
2432                                                  M_WAITOK | M_ZERO);
2433                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2434                         if (error) {
2435                                 free(params.mode_buf, M_TEMP);
2436                                 break;
2437                         }
2438                         page = cdgetpage(&params);
2439
2440                         arg->vol[LEFT_PORT] =
2441                                 page->audio.port[LEFT_PORT].volume;
2442                         arg->vol[RIGHT_PORT] =
2443                                 page->audio.port[RIGHT_PORT].volume;
2444                         arg->vol[2] = page->audio.port[2].volume;
2445                         arg->vol[3] = page->audio.port[3].volume;
2446                         free(params.mode_buf, M_TEMP);
2447                 }
2448                 break;
2449         case CDIOCSETVOL:
2450                 {
2451                         struct ioc_vol *arg = (struct ioc_vol *) addr;
2452                         struct cd_mode_params params;
2453                         union cd_pages *page;
2454
2455                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2456                                   ("trying to do CDIOCSETVOL\n"));
2457
2458                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2459                         params.mode_buf = malloc(params.alloc_len, M_TEMP,
2460                                                  M_WAITOK | M_ZERO);
2461                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2462                         if (error) {
2463                                 free(params.mode_buf, M_TEMP);
2464                                 break;
2465                         }
2466                         page = cdgetpage(&params);
2467
2468                         page->audio.port[LEFT_PORT].channels = CHANNEL_0;
2469                         page->audio.port[LEFT_PORT].volume =
2470                                 arg->vol[LEFT_PORT];
2471                         page->audio.port[RIGHT_PORT].channels = CHANNEL_1;
2472                         page->audio.port[RIGHT_PORT].volume =
2473                                 arg->vol[RIGHT_PORT];
2474                         page->audio.port[2].volume = arg->vol[2];
2475                         page->audio.port[3].volume = arg->vol[3];
2476                         error = cdsetmode(periph, &params);
2477                         free(params.mode_buf, M_TEMP);
2478                 }
2479                 break;
2480         case CDIOCSETMONO:
2481                 {
2482                         struct cd_mode_params params;
2483                         union cd_pages *page;
2484
2485                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2486                                   ("trying to do CDIOCSETMONO\n"));
2487
2488                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2489                         params.mode_buf = malloc(params.alloc_len, M_TEMP,
2490                                                  M_WAITOK | M_ZERO);
2491                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2492                         if (error) {
2493                                 free(params.mode_buf, M_TEMP);
2494                                 break;
2495                         }
2496                         page = cdgetpage(&params);
2497
2498                         page->audio.port[LEFT_PORT].channels =
2499                                 LEFT_CHANNEL | RIGHT_CHANNEL;
2500                         page->audio.port[RIGHT_PORT].channels =
2501                                 LEFT_CHANNEL | RIGHT_CHANNEL;
2502                         page->audio.port[2].channels = 0;
2503                         page->audio.port[3].channels = 0;
2504                         error = cdsetmode(periph, &params);
2505                         free(params.mode_buf, M_TEMP);
2506                 }
2507                 break;
2508         case CDIOCSETSTEREO:
2509                 {
2510                         struct cd_mode_params params;
2511                         union cd_pages *page;
2512
2513                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2514                                   ("trying to do CDIOCSETSTEREO\n"));
2515
2516                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2517                         params.mode_buf = malloc(params.alloc_len, M_TEMP,
2518                                                  M_WAITOK | M_ZERO);
2519                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2520                         if (error) {
2521                                 free(params.mode_buf, M_TEMP);
2522                                 break;
2523                         }
2524                         page = cdgetpage(&params);
2525
2526                         page->audio.port[LEFT_PORT].channels =
2527                                 LEFT_CHANNEL;
2528                         page->audio.port[RIGHT_PORT].channels =
2529                                 RIGHT_CHANNEL;
2530                         page->audio.port[2].channels = 0;
2531                         page->audio.port[3].channels = 0;
2532                         error = cdsetmode(periph, &params);
2533                         free(params.mode_buf, M_TEMP);
2534                 }
2535                 break;
2536         case CDIOCSETMUTE:
2537                 {
2538                         struct cd_mode_params params;
2539                         union cd_pages *page;
2540
2541                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2542                                   ("trying to do CDIOCSETMUTE\n"));
2543
2544                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2545                         params.mode_buf = malloc(params.alloc_len, M_TEMP,
2546                                                  M_WAITOK | M_ZERO);
2547                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2548                         if (error) {
2549                                 free(&params, M_TEMP);
2550                                 break;
2551                         }
2552                         page = cdgetpage(&params);
2553
2554                         page->audio.port[LEFT_PORT].channels = 0;
2555                         page->audio.port[RIGHT_PORT].channels = 0;
2556                         page->audio.port[2].channels = 0;
2557                         page->audio.port[3].channels = 0;
2558                         error = cdsetmode(periph, &params);
2559                         free(params.mode_buf, M_TEMP);
2560                 }
2561                 break;
2562         case CDIOCSETLEFT:
2563                 {
2564                         struct cd_mode_params params;
2565                         union cd_pages *page;
2566
2567                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2568                                   ("trying to do CDIOCSETLEFT\n"));
2569
2570                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2571                         params.mode_buf = malloc(params.alloc_len, M_TEMP,
2572                                                  M_WAITOK | M_ZERO);
2573
2574                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2575                         if (error) {
2576                                 free(params.mode_buf, M_TEMP);
2577                                 break;
2578                         }
2579                         page = cdgetpage(&params);
2580
2581                         page->audio.port[LEFT_PORT].channels = LEFT_CHANNEL;
2582                         page->audio.port[RIGHT_PORT].channels = LEFT_CHANNEL;
2583                         page->audio.port[2].channels = 0;
2584                         page->audio.port[3].channels = 0;
2585                         error = cdsetmode(periph, &params);
2586                         free(params.mode_buf, M_TEMP);
2587                 }
2588                 break;
2589         case CDIOCSETRIGHT:
2590                 {
2591                         struct cd_mode_params params;
2592                         union cd_pages *page;
2593
2594                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2595                                   ("trying to do CDIOCSETRIGHT\n"));
2596
2597                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2598                         params.mode_buf = malloc(params.alloc_len, M_TEMP,
2599                                                  M_WAITOK | M_ZERO);
2600
2601                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2602                         if (error) {
2603                                 free(params.mode_buf, M_TEMP);
2604                                 break;
2605                         }
2606                         page = cdgetpage(&params);
2607
2608                         page->audio.port[LEFT_PORT].channels = RIGHT_CHANNEL;
2609                         page->audio.port[RIGHT_PORT].channels = RIGHT_CHANNEL;
2610                         page->audio.port[2].channels = 0;
2611                         page->audio.port[3].channels = 0;
2612                         error = cdsetmode(periph, &params);
2613                         free(params.mode_buf, M_TEMP);
2614                 }
2615                 break;
2616         case CDIOCRESUME:
2617                 error = cdpause(periph, 1);
2618                 break;
2619         case CDIOCPAUSE:
2620                 error = cdpause(periph, 0);
2621                 break;
2622         case CDIOCSTART:
2623                 error = cdstartunit(periph, 0);
2624                 break;
2625         case CDIOCCLOSE:
2626                 error = cdstartunit(periph, 1);
2627
2628 #ifdef notyet
2629                 if (error != 0)
2630                         break;
2631
2632                 /*
2633                  * The user successfully closed the tray, run
2634                  * cdcheckmedia() again so we can re-sync the disklabel
2635                  * information.
2636                  */
2637                 cdcheckmedia(periph);
2638 #endif /* notyet */
2639                 break;
2640         case CDIOCSTOP:
2641                 error = cdstopunit(periph, 0);
2642                 break;
2643         case CDIOCEJECT:
2644                 error = cdstopunit(periph, 1);
2645
2646 #ifdef notyet
2647                 if (error != 0)
2648                         break;
2649
2650                 /*
2651                  * Since we've successfully ejected the media, run
2652                  * cdcheckmedia() again so we re-sync the disklabel
2653                  * information.
2654                  */
2655                 cdcheckmedia(periph);
2656 #endif /* notyet */
2657                 break;
2658         case CDIOCALLOW:
2659                 cdprevent(periph, PR_ALLOW);
2660                 break;
2661         case CDIOCPREVENT:
2662                 cdprevent(periph, PR_PREVENT);
2663                 break;
2664         case CDIOCSETDEBUG:
2665                 /* sc_link->flags |= (SDEV_DB1 | SDEV_DB2); */
2666                 error = ENOTTY;
2667                 break;
2668         case CDIOCCLRDEBUG:
2669                 /* sc_link->flags &= ~(SDEV_DB1 | SDEV_DB2); */
2670                 error = ENOTTY;
2671                 break;
2672         case CDIOCRESET:
2673                 /* return (cd_reset(periph)); */
2674                 error = ENOTTY;
2675                 break;
2676         case CDRIOCREADSPEED:
2677                 error = cdsetspeed(periph, *(u_int32_t *)addr, CDR_MAX_SPEED);
2678                 break;
2679         case CDRIOCWRITESPEED:
2680                 error = cdsetspeed(periph, CDR_MAX_SPEED, *(u_int32_t *)addr);
2681                 break;
2682         case DVDIOCSENDKEY:
2683         case DVDIOCREPORTKEY: {
2684                 struct dvd_authinfo *authinfo;
2685
2686                 authinfo = (struct dvd_authinfo *)addr;
2687
2688                 if (cmd == DVDIOCREPORTKEY)
2689                         error = cdreportkey(periph, authinfo);
2690                 else
2691                         error = cdsendkey(periph, authinfo);
2692                 break;
2693         }
2694         case DVDIOCREADSTRUCTURE: {
2695                 struct dvd_struct *dvdstruct;
2696
2697                 dvdstruct = (struct dvd_struct *)addr;
2698
2699                 error = cdreaddvdstructure(periph, dvdstruct);
2700
2701                 break;
2702         }
2703         default:
2704                 error = cam_periph_ioctl(periph, cmd, addr, cderror);
2705                 break;
2706         }
2707
2708         cam_periph_unlock(periph);
2709
2710         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("leaving cdioctl\n"));
2711
2712         return (error);
2713 }
2714
2715 static void
2716 cdprevent(struct cam_periph *periph, int action)
2717 {
2718         union   ccb *ccb;
2719         struct  cd_softc *softc;
2720         int     error;
2721
2722         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("entering cdprevent\n"));
2723
2724         softc = (struct cd_softc *)periph->softc;
2725
2726         if (((action == PR_ALLOW)
2727           && (softc->flags & CD_FLAG_DISC_LOCKED) == 0)
2728          || ((action == PR_PREVENT)
2729           && (softc->flags & CD_FLAG_DISC_LOCKED) != 0)) {
2730                 return;
2731         }
2732
2733         ccb = cdgetccb(periph, /* priority */ 1);
2734
2735         scsi_prevent(&ccb->csio,
2736                      /*retries*/ 1,
2737                      cddone,
2738                      MSG_SIMPLE_Q_TAG,
2739                      action,
2740                      SSD_FULL_SIZE,
2741                      /* timeout */60000);
2742
2743         error = cdrunccb(ccb, cderror, /*cam_flags*/0,
2744                         /*sense_flags*/SF_RETRY_UA|SF_NO_PRINT|SF_RETRY_SELTO);
2745
2746         xpt_release_ccb(ccb);
2747
2748         if (error == 0) {
2749                 if (action == PR_ALLOW)
2750                         softc->flags &= ~CD_FLAG_DISC_LOCKED;
2751                 else
2752                         softc->flags |= CD_FLAG_DISC_LOCKED;
2753         }
2754 }
2755
2756 int
2757 cdcheckmedia(struct cam_periph *periph)
2758 {
2759         struct cd_softc *softc;
2760         struct ioc_toc_header *toch;
2761         struct cd_toc_single leadout;
2762         struct ccb_getdev cgd;
2763         u_int32_t size, toclen;
2764         int error, num_entries, cdindex;
2765         int first_track_audio;
2766         struct disklabel *label;
2767
2768         softc = (struct cd_softc *)periph->softc;
2769
2770         first_track_audio = -1;
2771         error = 0;
2772
2773         cdprevent(periph, PR_PREVENT);
2774
2775         /*
2776          * Build prototype label for whole disk.
2777          * Should take information about different data tracks from the
2778          * TOC and put it in the partition table.
2779          */
2780         label = &softc->disk.d_label;
2781         bzero(label, sizeof(*label));
2782         label->d_type = DTYPE_SCSI;
2783
2784         /*
2785          * Grab the inquiry data to get the vendor and product names.
2786          * Put them in the typename and packname for the label.
2787          */
2788         xpt_setup_ccb(&cgd.ccb_h, periph->path, /*priority*/ 1);
2789         cgd.ccb_h.func_code = XPT_GDEV_TYPE;
2790         xpt_action((union ccb *)&cgd);
2791
2792         strncpy(label->d_typename, cgd.inq_data.vendor,
2793                 min(SID_VENDOR_SIZE, sizeof(label->d_typename)));
2794         strncpy(label->d_packname, cgd.inq_data.product,
2795                 min(SID_PRODUCT_SIZE, sizeof(label->d_packname)));
2796
2797         label->d_flags = D_REMOVABLE;
2798         /*
2799          * Make partition 'a' cover the whole disk.  This is a temporary
2800          * compatibility hack.  The 'a' partition should not exist, so
2801          * the slice code won't create it.  The slice code will make
2802          * partition (RAW_PART + 'a') cover the whole disk and fill in
2803          * some more defaults.
2804          */
2805         label->d_partitions[0].p_size = label->d_secperunit;
2806         label->d_partitions[0].p_fstype = FS_OTHER;
2807
2808         /*
2809          * Default to not reading the disklabel off the disk, until we can
2810          * verify that we have media, that we have a table of contents, and
2811          * that the first track is a data track (which could theoretically
2812          * contain a disklabel).
2813          */
2814         softc->disk.d_dsflags &= ~DSO_COMPATLABEL;
2815         softc->disk.d_dsflags |= DSO_NOLABELS;
2816
2817         /*
2818          * Clear the valid media and TOC flags until we've verified that we
2819          * have both.
2820          */
2821         softc->flags &= ~(CD_FLAG_VALID_MEDIA|CD_FLAG_VALID_TOC);
2822
2823         /*
2824          * Get the disc size and block size.  If we can't get it, we don't
2825          * have media, most likely.
2826          */
2827         if ((error = cdsize(periph, &size)) != 0) {
2828                 /*
2829                  * Set a bogus sector size, so the slice code won't try to
2830                  * divide by 0 and panic the kernel.
2831                  */
2832                 label->d_secsize = 2048;
2833
2834                 label->d_secperunit = 0;
2835
2836                 /*
2837                  * XXX KDM is this a good idea?  Seems to cause more
2838                  * problems.
2839                  */
2840                 if (softc->flags & CD_FLAG_OPEN) {
2841                         int force;
2842
2843                         force = 1;
2844
2845                         /*
2846                          * We don't bother checking the return value here,
2847                          * since we already have an error...
2848                          */
2849                         dsioctl(softc->disk.d_cdev, DIOCSYNCSLICEINFO,
2850                                 /*data*/(caddr_t)&force, /*flags*/ 0,
2851                                 &softc->disk.d_slice);
2852                 }
2853
2854                 /*
2855                  * Tell devstat(9) we don't have a blocksize.
2856                  */
2857                 softc->device_stats.flags |= DEVSTAT_BS_UNAVAILABLE;
2858
2859                 cdprevent(periph, PR_ALLOW);
2860
2861                 return (error);
2862         } else {
2863
2864                 label->d_secsize = softc->params.blksize;
2865                 label->d_secperunit = softc->params.disksize;
2866
2867                 /*
2868                  * Force a re-sync of slice information, like the blocksize,
2869                  * now that we know it.  It isn't pretty...but according to
2870                  * Bruce Evans, this is probably the best way to do it in
2871                  * -stable.  We only do this if we're already open, and
2872                  * therefore dsopen() has already run.  If CD_FLAG_OPEN
2873                  * isn't set, this isn't necessary.
2874                  */
2875                 if (softc->flags & CD_FLAG_OPEN) {
2876                         int force;
2877
2878                         force = 1;
2879
2880                         error = dsioctl(softc->disk.d_cdev, DIOCSYNCSLICEINFO,
2881                                         /*data*/(caddr_t)&force, /*flags*/ 0,
2882                                         &softc->disk.d_slice);
2883                         if (error != 0) {
2884                                 /*
2885                                  * Set a bogus sector size, so the slice code
2886                                  * won't try to divide by 0 and panic the
2887                                  * kernel.
2888                                  */
2889                                 label->d_secsize = 2048;
2890
2891                                 label->d_secperunit = 0;
2892
2893                                 /*
2894                                  * Tell devstat(9) we don't have a blocksize.
2895                                  */
2896                                 softc->device_stats.flags |=
2897                                         DEVSTAT_BS_UNAVAILABLE;
2898
2899                                 cdprevent(periph, PR_ALLOW);
2900                         }
2901                 }
2902
2903                 /*
2904                  * We unconditionally (re)set the blocksize each time the
2905                  * CD device is opened.  This is because the CD can change,
2906                  * and therefore the blocksize might change.
2907                  * XXX problems here if some slice or partition is still
2908                  * open with the old size?
2909                  */
2910                 if ((softc->device_stats.flags & DEVSTAT_BS_UNAVAILABLE) != 0)
2911                         softc->device_stats.flags &= ~DEVSTAT_BS_UNAVAILABLE;
2912                 softc->device_stats.block_size = softc->params.blksize;
2913
2914                 softc->flags |= CD_FLAG_VALID_MEDIA;
2915         }
2916
2917         /*
2918          * Now we check the table of contents.  This (currently) is only
2919          * used for the CDIOCPLAYTRACKS ioctl.  It may be used later to do
2920          * things like present a separate entry in /dev for each track,
2921          * like that acd(4) driver does.
2922          */
2923         bzero(&softc->toc, sizeof(softc->toc));
2924         toch = &softc->toc.header;
2925
2926         /*
2927          * We will get errors here for media that doesn't have a table of
2928          * contents.  According to the MMC-3 spec: "When a Read TOC/PMA/ATIP
2929          * command is presented for a DDCD/CD-R/RW media, where the first TOC
2930          * has not been recorded (no complete session) and the Format codes
2931          * 0000b, 0001b, or 0010b are specified, this command shall be rejected
2932          * with an INVALID FIELD IN CDB.  Devices that are not capable of
2933          * reading an incomplete session on DDC/CD-R/RW media shall report
2934          * CANNOT READ MEDIUM - INCOMPATIBLE FORMAT."
2935          *
2936          * So this isn't fatal if we can't read the table of contents, it
2937          * just means that the user won't be able to issue the play tracks
2938          * ioctl, and likely lots of other stuff won't work either.  They
2939          * need to burn the CD before we can do a whole lot with it.  So
2940          * we don't print anything here if we get an error back.
2941          */
2942         error = cdreadtoc(periph, 0, 0, (u_int8_t *)toch, sizeof(*toch),
2943                           SF_NO_PRINT);
2944         /*
2945          * Errors in reading the table of contents aren't fatal, we just
2946          * won't have a valid table of contents cached.
2947          */
2948         if (error != 0) {
2949                 error = 0;
2950                 bzero(&softc->toc, sizeof(softc->toc));
2951                 goto bailout;
2952         }
2953
2954         if (softc->quirks & CD_Q_BCD_TRACKS) {
2955                 toch->starting_track = bcd2bin(toch->starting_track);
2956                 toch->ending_track = bcd2bin(toch->ending_track);
2957         }
2958
2959         /* Number of TOC entries, plus leadout */
2960         num_entries = (toch->ending_track - toch->starting_track) + 2;
2961
2962         if (num_entries <= 0)
2963                 goto bailout;
2964
2965         toclen = num_entries * sizeof(struct cd_toc_entry);
2966
2967         error = cdreadtoc(periph, CD_MSF_FORMAT, toch->starting_track,
2968                           (u_int8_t *)&softc->toc, toclen + sizeof(*toch),
2969                           SF_NO_PRINT);
2970         if (error != 0) {
2971                 error = 0;
2972                 bzero(&softc->toc, sizeof(softc->toc));
2973                 goto bailout;
2974         }
2975
2976         if (softc->quirks & CD_Q_BCD_TRACKS) {
2977                 toch->starting_track = bcd2bin(toch->starting_track);
2978                 toch->ending_track = bcd2bin(toch->ending_track);
2979         }
2980         toch->len = scsi_2btoul((uint8_t *)&toch->len);
2981
2982         /*
2983          * XXX KDM is this necessary?  Probably only if the drive doesn't
2984          * return leadout information with the table of contents.
2985          */
2986         cdindex = toch->starting_track + num_entries -1;
2987         if (cdindex == toch->ending_track + 1) {
2988
2989                 error = cdreadtoc(periph, CD_MSF_FORMAT, LEADOUT,
2990                                   (u_int8_t *)&leadout, sizeof(leadout),
2991                                   SF_NO_PRINT);
2992                 if (error != 0) {
2993                         error = 0;
2994                         goto bailout;
2995                 }
2996                 softc->toc.entries[cdindex - toch->starting_track] =
2997                         leadout.entry;
2998         }
2999         if (softc->quirks & CD_Q_BCD_TRACKS) {
3000                 for (cdindex = 0; cdindex < (num_entries - 1); cdindex++) {
3001                         softc->toc.entries[cdindex].track =
3002                                 bcd2bin(softc->toc.entries[cdindex].track);
3003                 }
3004         }
3005
3006         /*
3007          * Run through the TOC entries, find the first entry and determine
3008          * whether it is an audio or data track.
3009          */
3010         for (cdindex = 0; cdindex < (num_entries - 1); cdindex++) {
3011                 if (softc->toc.entries[cdindex].track == toch->starting_track) {
3012                         if (softc->toc.entries[cdindex].control & 0x04)
3013                                 first_track_audio = 0;
3014                         else
3015                                 first_track_audio = 1;
3016                         break;
3017                 }
3018         }
3019
3020         /*
3021          * If first_track_audio is non-zero, we either have an error (e.g.
3022          * couldn't find the starting track) or the first track is an audio
3023          * track.  If first_track_audio is 0, the first track is a data
3024          * track that could have a disklabel.  Attempt to read the
3025          * disklabel off the media, just in case the user put one there.
3026          */
3027         if (first_track_audio == 0) {
3028                 softc->disk.d_dsflags |= DSO_COMPATLABEL;
3029                 softc->disk.d_dsflags &= ~DSO_NOLABELS;
3030         }
3031         softc->flags |= CD_FLAG_VALID_TOC;
3032
3033 bailout:
3034         return (error);
3035 }
3036
3037 static int
3038 cdsize(struct cam_periph *periph, u_int32_t *size)
3039 {
3040         struct cd_softc *softc;
3041         union ccb *ccb;
3042         struct scsi_read_capacity_data *rcap_buf;
3043         int error;
3044
3045         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("entering cdsize\n"));
3046
3047         softc = (struct cd_softc *)periph->softc;
3048
3049         ccb = cdgetccb(periph, /* priority */ 1);
3050
3051         rcap_buf = malloc(sizeof(struct scsi_read_capacity_data),
3052                           M_TEMP, M_INTWAIT | M_ZERO);
3053
3054         scsi_read_capacity(&ccb->csio,
3055                            /*retries*/ 1,
3056                            cddone,
3057                            MSG_SIMPLE_Q_TAG,
3058                            rcap_buf,
3059                            SSD_FULL_SIZE,
3060                            /* timeout */20000);
3061
3062         error = cdrunccb(ccb, cderror, /*cam_flags*/0,
3063                          /*sense_flags*/SF_RETRY_UA|SF_NO_PRINT|SF_RETRY_SELTO);
3064
3065         xpt_release_ccb(ccb);
3066
3067         softc->params.disksize = scsi_4btoul(rcap_buf->addr) + 1;
3068         softc->params.blksize  = scsi_4btoul(rcap_buf->length);
3069         /*
3070          * SCSI-3 mandates that the reported blocksize shall be 2048.
3071          * Older drives sometimes report funny values, trim it down to
3072          * 2048, or other parts of the kernel will get confused.
3073          *
3074          * XXX we leave drives alone that might report 512 bytes, as
3075          * well as drives reporting more weird sizes like perhaps 4K.
3076          */
3077         if (softc->params.blksize > 2048 && softc->params.blksize <= 2352)
3078                 softc->params.blksize = 2048;
3079
3080         free(rcap_buf, M_TEMP);
3081         *size = softc->params.disksize;
3082
3083         return (error);
3084
3085 }
3086
3087 static int
3088 cd6byteworkaround(union ccb *ccb)
3089 {
3090         u_int8_t *cdb;
3091         struct cam_periph *periph;
3092         struct cd_softc *softc;
3093         struct cd_mode_params *params;
3094         int frozen, found;
3095
3096         periph = xpt_path_periph(ccb->ccb_h.path);
3097         softc = (struct cd_softc *)periph->softc;
3098
3099         cdb = ccb->csio.cdb_io.cdb_bytes;
3100
3101         if ((ccb->ccb_h.flags & CAM_CDB_POINTER)
3102          || ((cdb[0] != MODE_SENSE_6)
3103           && (cdb[0] != MODE_SELECT_6)))
3104                 return (0);
3105
3106         /*
3107          * Because there is no convenient place to stash the overall
3108          * cd_mode_params structure pointer, we have to grab it like this.
3109          * This means that ALL MODE_SENSE and MODE_SELECT requests in the
3110          * cd(4) driver MUST go through cdgetmode() and cdsetmode()!
3111          *
3112          * XXX It would be nice if, at some point, we could increase the
3113          * number of available peripheral private pointers.  Both pointers
3114          * are currently used in most every peripheral driver.
3115          */
3116         found = 0;
3117
3118         STAILQ_FOREACH(params, &softc->mode_queue, links) {
3119                 if (params->mode_buf == ccb->csio.data_ptr) {
3120                         found = 1;
3121                         break;
3122                 }
3123         }
3124
3125         /*
3126          * This shouldn't happen.  All mode sense and mode select
3127          * operations in the cd(4) driver MUST go through cdgetmode() and
3128          * cdsetmode()!
3129          */
3130         if (found == 0) {
3131                 xpt_print_path(periph->path);
3132                 printf("mode buffer not found in mode queue!\n");
3133                 return (0);
3134         }
3135
3136         params->cdb_size = 10;
3137         softc->minimum_command_size = 10;
3138         xpt_print_path(ccb->ccb_h.path);
3139         printf("%s(6) failed, increasing minimum CDB size to 10 bytes\n",
3140                (cdb[0] == MODE_SENSE_6) ? "MODE_SENSE" : "MODE_SELECT");
3141
3142         if (cdb[0] == MODE_SENSE_6) {
3143                 struct scsi_mode_sense_10 ms10;
3144                 struct scsi_mode_sense_6 *ms6;
3145                 int len;
3146
3147                 ms6 = (struct scsi_mode_sense_6 *)cdb;
3148
3149                 bzero(&ms10, sizeof(ms10));
3150                 ms10.opcode = MODE_SENSE_10;
3151                 ms10.byte2 = ms6->byte2;
3152                 ms10.page = ms6->page;
3153
3154                 /*
3155                  * 10 byte mode header, block descriptor,
3156                  * sizeof(union cd_pages)
3157                  */
3158                 len = sizeof(struct cd_mode_data_10);
3159                 ccb->csio.dxfer_len = len;
3160
3161                 scsi_ulto2b(len, ms10.length);
3162                 ms10.control = ms6->control;
3163                 bcopy(&ms10, cdb, 10);
3164                 ccb->csio.cdb_len = 10;
3165         } else {
3166                 struct scsi_mode_select_10 ms10;
3167                 struct scsi_mode_select_6 *ms6;
3168                 struct scsi_mode_header_6 *header6;
3169                 struct scsi_mode_header_10 *header10;
3170                 struct scsi_mode_page_header *page_header;
3171                 int blk_desc_len, page_num, page_size, len;
3172
3173                 ms6 = (struct scsi_mode_select_6 *)cdb;
3174
3175                 bzero(&ms10, sizeof(ms10));
3176                 ms10.opcode = MODE_SELECT_10;
3177                 ms10.byte2 = ms6->byte2;
3178
3179                 header6 = (struct scsi_mode_header_6 *)params->mode_buf;
3180                 header10 = (struct scsi_mode_header_10 *)params->mode_buf;
3181
3182                 page_header = find_mode_page_6(header6);
3183                 page_num = page_header->page_code;
3184
3185                 blk_desc_len = header6->blk_desc_len;
3186
3187                 page_size = cdgetpagesize(page_num);
3188
3189                 if (page_size != (page_header->page_length +
3190                     sizeof(*page_header)))
3191                         page_size = page_header->page_length +
3192                                 sizeof(*page_header);
3193
3194                 len = sizeof(*header10) + blk_desc_len + page_size;
3195
3196                 len = min(params->alloc_len, len);
3197
3198                 /*
3199                  * Since the 6 byte parameter header is shorter than the 10
3200                  * byte parameter header, we need to copy the actual mode
3201                  * page data, and the block descriptor, if any, so things wind
3202                  * up in the right place.  The regions will overlap, but
3203                  * bcopy() does the right thing.
3204                  */
3205                 bcopy(params->mode_buf + sizeof(*header6),
3206                       params->mode_buf + sizeof(*header10),
3207                       len - sizeof(*header10));
3208
3209                 /* Make sure these fields are set correctly. */
3210                 scsi_ulto2b(0, header10->data_length);
3211                 header10->medium_type = 0;
3212                 scsi_ulto2b(blk_desc_len, header10->blk_desc_len);
3213
3214                 ccb->csio.dxfer_len = len;
3215
3216                 scsi_ulto2b(len, ms10.length);
3217                 ms10.control = ms6->control;
3218                 bcopy(&ms10, cdb, 10);
3219                 ccb->csio.cdb_len = 10;
3220         }
3221
3222         frozen = (ccb->ccb_h.status & CAM_DEV_QFRZN) != 0;
3223         ccb->ccb_h.status = CAM_REQUEUE_REQ;
3224         xpt_action(ccb);
3225         if (frozen) {
3226                 cam_release_devq(ccb->ccb_h.path,
3227                                  /*relsim_flags*/0,
3228                                  /*openings*/0,
3229                                  /*timeout*/0,
3230                                  /*getcount_only*/0);
3231         }
3232
3233         return (ERESTART);
3234 }
3235
3236 static int
3237 cderror(union ccb *ccb, u_int32_t cam_flags, u_int32_t sense_flags)
3238 {
3239         struct cd_softc *softc;
3240         struct cam_periph *periph;
3241         int error;
3242
3243         periph = xpt_path_periph(ccb->ccb_h.path);
3244         softc = (struct cd_softc *)periph->softc;
3245
3246         error = 0;
3247
3248         /*
3249          * We use a status of CAM_REQ_INVALID as shorthand -- if a 6 byte
3250          * CDB comes back with this particular error, try transforming it
3251          * into the 10 byte version.
3252          */
3253         if ((ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_INVALID) {
3254                 error = cd6byteworkaround(ccb);
3255         } else if (((ccb->ccb_h.status & CAM_STATUS_MASK) ==
3256                      CAM_SCSI_STATUS_ERROR)
3257          && (ccb->ccb_h.status & CAM_AUTOSNS_VALID)
3258          && (ccb->csio.scsi_status == SCSI_STATUS_CHECK_COND)
3259          && ((ccb->ccb_h.flags & CAM_SENSE_PHYS) == 0)
3260          && ((ccb->ccb_h.flags & CAM_SENSE_PTR) == 0)) {
3261                 int sense_key, error_code, asc, ascq;
3262
3263                 scsi_extract_sense(&ccb->csio.sense_data,
3264                                    &error_code, &sense_key, &asc, &ascq);
3265                 if (sense_key == SSD_KEY_ILLEGAL_REQUEST)
3266                         error = cd6byteworkaround(ccb);
3267         }
3268
3269         if (error == ERESTART)
3270                 return (error);
3271
3272         /*
3273          * XXX
3274          * Until we have a better way of doing pack validation,
3275          * don't treat UAs as errors.
3276          */
3277         sense_flags |= SF_RETRY_UA;
3278         return (cam_periph_error(ccb, cam_flags, sense_flags,
3279                                  &softc->saved_ccb));
3280 }
3281
3282 /*
3283  * Read table of contents
3284  */
3285 static int
3286 cdreadtoc(struct cam_periph *periph, u_int32_t mode, u_int32_t start,
3287           u_int8_t *data, u_int32_t len, u_int32_t sense_flags)
3288 {
3289         struct scsi_read_toc *scsi_cmd;
3290         u_int32_t ntoc;
3291         struct ccb_scsiio *csio;
3292         union ccb *ccb;
3293         int error;
3294
3295         ntoc = len;
3296         error = 0;
3297
3298         ccb = cdgetccb(periph, /* priority */ 1);
3299
3300         csio = &ccb->csio;
3301
3302         cam_fill_csio(csio,
3303                       /* retries */ 1,
3304                       /* cbfcnp */ cddone,
3305                       /* flags */ CAM_DIR_IN,
3306                       /* tag_action */ MSG_SIMPLE_Q_TAG,
3307                       /* data_ptr */ data,
3308                       /* dxfer_len */ len,
3309                       /* sense_len */ SSD_FULL_SIZE,
3310                       sizeof(struct scsi_read_toc),
3311                       /* timeout */ 50000);
3312
3313         scsi_cmd = (struct scsi_read_toc *)&csio->cdb_io.cdb_bytes;
3314         bzero (scsi_cmd, sizeof(*scsi_cmd));
3315
3316         if (mode == CD_MSF_FORMAT)
3317                 scsi_cmd->byte2 |= CD_MSF;
3318         scsi_cmd->from_track = start;
3319         /* scsi_ulto2b(ntoc, (u_int8_t *)scsi_cmd->data_len); */
3320         scsi_cmd->data_len[0] = (ntoc) >> 8;
3321         scsi_cmd->data_len[1] = (ntoc) & 0xff;
3322
3323         scsi_cmd->op_code = READ_TOC;
3324
3325         error = cdrunccb(ccb, cderror, /*cam_flags*/0,
3326                          /*sense_flags*/SF_RETRY_UA | SF_RETRY_SELTO |
3327                          sense_flags);
3328
3329         xpt_release_ccb(ccb);
3330
3331         return(error);
3332 }
3333
3334 static int
3335 cdreadsubchannel(struct cam_periph *periph, u_int32_t mode,
3336                  u_int32_t format, int track,
3337                  struct cd_sub_channel_info *data, u_int32_t len)
3338 {
3339         struct scsi_read_subchannel *scsi_cmd;
3340         struct ccb_scsiio *csio;
3341         union ccb *ccb;
3342         int error;
3343
3344         error = 0;
3345
3346         ccb = cdgetccb(periph, /* priority */ 1);
3347
3348         csio = &ccb->csio;
3349
3350         cam_fill_csio(csio,
3351                       /* retries */ 1,
3352                       /* cbfcnp */ cddone,
3353                       /* flags */ CAM_DIR_IN,
3354                       /* tag_action */ MSG_SIMPLE_Q_TAG,
3355                       /* data_ptr */ (u_int8_t *)data,
3356                       /* dxfer_len */ len,
3357                       /* sense_len */ SSD_FULL_SIZE,
3358                       sizeof(struct scsi_read_subchannel),
3359                       /* timeout */ 50000);
3360
3361         scsi_cmd = (struct scsi_read_subchannel *)&csio->cdb_io.cdb_bytes;
3362         bzero (scsi_cmd, sizeof(*scsi_cmd));
3363
3364         scsi_cmd->op_code = READ_SUBCHANNEL;
3365         if (mode == CD_MSF_FORMAT)
3366                 scsi_cmd->byte1 |= CD_MSF;
3367         scsi_cmd->byte2 = SRS_SUBQ;
3368         scsi_cmd->subchan_format = format;
3369         scsi_cmd->track = track;
3370         scsi_ulto2b(len, (u_int8_t *)scsi_cmd->data_len);
3371         scsi_cmd->control = 0;
3372
3373         error = cdrunccb(ccb, cderror, /*cam_flags*/0,
3374                          /*sense_flags*/SF_RETRY_UA|SF_RETRY_SELTO);
3375
3376         xpt_release_ccb(ccb);
3377
3378         return(error);
3379 }
3380
3381 /*
3382  * All MODE_SENSE requests in the cd(4) driver MUST go through this
3383  * routine.  See comments in cd6byteworkaround() for details.
3384  */
3385 static int
3386 cdgetmode(struct cam_periph *periph, struct cd_mode_params *data,
3387           u_int32_t page)
3388 {
3389         struct ccb_scsiio *csio;
3390         struct cd_softc *softc;
3391         union ccb *ccb;
3392         int param_len;
3393         int error;
3394
3395         softc = (struct cd_softc *)periph->softc;
3396
3397         ccb = cdgetccb(periph, /* priority */ 1);
3398
3399         csio = &ccb->csio;
3400
3401         data->cdb_size = softc->minimum_command_size;
3402         if (data->cdb_size < 10)
3403                 param_len = sizeof(struct cd_mode_data);
3404         else
3405                 param_len = sizeof(struct cd_mode_data_10);
3406
3407         /* Don't say we've got more room than we actually allocated */
3408         param_len = min(param_len, data->alloc_len);
3409
3410         scsi_mode_sense_len(csio,
3411                             /* retries */ 1,
3412                             /* cbfcnp */ cddone,
3413                             /* tag_action */ MSG_SIMPLE_Q_TAG,
3414                             /* dbd */ 0,
3415                             /* page_code */ SMS_PAGE_CTRL_CURRENT,
3416                             /* page */ page,
3417                             /* param_buf */ data->mode_buf,
3418                             /* param_len */ param_len,
3419                             /* minimum_cmd_size */ softc->minimum_command_size,
3420                             /* sense_len */ SSD_FULL_SIZE,
3421                             /* timeout */ 50000);
3422
3423         /*
3424          * It would be nice not to have to do this, but there's no
3425          * available pointer in the CCB that would allow us to stuff the
3426          * mode params structure in there and retrieve it in
3427          * cd6byteworkaround(), so we can set the cdb size.  The cdb size
3428          * lets the caller know what CDB size we ended up using, so they
3429          * can find the actual mode page offset.
3430          */
3431         STAILQ_INSERT_TAIL(&softc->mode_queue, data, links);
3432
3433         error = cdrunccb(ccb, cderror, /*cam_flags*/0,
3434                          /*sense_flags*/SF_RETRY_UA|SF_RETRY_SELTO);
3435
3436         xpt_release_ccb(ccb);
3437
3438         STAILQ_REMOVE(&softc->mode_queue, data, cd_mode_params, links);
3439
3440         /*
3441          * This is a bit of belt-and-suspenders checking, but if we run
3442          * into a situation where the target sends back multiple block
3443          * descriptors, we might not have enough space in the buffer to
3444          * see the whole mode page.  Better to return an error than
3445          * potentially access memory beyond our malloced region.
3446          */
3447         if (error == 0) {
3448                 u_int32_t data_len;
3449
3450                 if (data->cdb_size == 10) {
3451                         struct scsi_mode_header_10 *hdr10;
3452
3453                         hdr10 = (struct scsi_mode_header_10 *)data->mode_buf;
3454                         data_len = scsi_2btoul(hdr10->data_length);
3455                         data_len += sizeof(hdr10->data_length);
3456                 } else {
3457                         struct scsi_mode_header_6 *hdr6;
3458
3459                         hdr6 = (struct scsi_mode_header_6 *)data->mode_buf;
3460                         data_len = hdr6->data_length;
3461                         data_len += sizeof(hdr6->data_length);
3462                 }
3463
3464                 /*
3465                  * Complain if there is more mode data available than we
3466                  * allocated space for.  This could potentially happen if
3467                  * we miscalculated the page length for some reason, if the
3468                  * drive returns multiple block descriptors, or if it sets
3469                  * the data length incorrectly.
3470                  */
3471                 if (data_len > data->alloc_len) {
3472                         xpt_print_path(periph->path);
3473                         printf("allocated modepage %d length %d < returned "
3474                                "length %d\n", page, data->alloc_len, data_len);
3475
3476                         error = ENOSPC;
3477                 }
3478         }
3479         return (error);
3480 }
3481
3482 /*
3483  * All MODE_SELECT requests in the cd(4) driver MUST go through this
3484  * routine.  See comments in cd6byteworkaround() for details.
3485  */
3486 static int
3487 cdsetmode(struct cam_periph *periph, struct cd_mode_params *data)
3488 {
3489         struct ccb_scsiio *csio;
3490         struct cd_softc *softc;
3491         union ccb *ccb;
3492         int cdb_size, param_len;
3493         int error;
3494
3495         softc = (struct cd_softc *)periph->softc;
3496
3497         ccb = cdgetccb(periph, /* priority */ 1);
3498
3499         csio = &ccb->csio;
3500
3501         error = 0;
3502
3503         /*
3504          * If the data is formatted for the 10 byte version of the mode
3505          * select parameter list, we need to use the 10 byte CDB.
3506          * Otherwise, we use whatever the stored minimum command size.
3507          */
3508         if (data->cdb_size == 10)
3509                 cdb_size = data->cdb_size;
3510         else
3511                 cdb_size = softc->minimum_command_size;
3512
3513         if (cdb_size >= 10) {
3514                 struct scsi_mode_header_10 *mode_header;
3515                 u_int32_t data_len;
3516
3517                 mode_header = (struct scsi_mode_header_10 *)data->mode_buf;
3518
3519                 data_len = scsi_2btoul(mode_header->data_length);
3520
3521                 scsi_ulto2b(0, mode_header->data_length);
3522                 /*
3523                  * SONY drives do not allow a mode select with a medium_type
3524                  * value that has just been returned by a mode sense; use a
3525                  * medium_type of 0 (Default) instead.
3526                  */
3527                 mode_header->medium_type = 0;
3528
3529                 /*
3530                  * Pass back whatever the drive passed to us, plus the size
3531                  * of the data length field.
3532                  */
3533                 param_len = data_len + sizeof(mode_header->data_length);
3534
3535         } else {
3536                 struct scsi_mode_header_6 *mode_header;
3537
3538                 mode_header = (struct scsi_mode_header_6 *)data->mode_buf;
3539
3540                 param_len = mode_header->data_length + 1;
3541
3542                 mode_header->data_length = 0;
3543                 /*
3544                  * SONY drives do not allow a mode select with a medium_type
3545                  * value that has just been returned by a mode sense; use a
3546                  * medium_type of 0 (Default) instead.
3547                  */
3548                 mode_header->medium_type = 0;
3549         }
3550
3551         /* Don't say we've got more room than we actually allocated */
3552         param_len = min(param_len, data->alloc_len);
3553
3554         scsi_mode_select_len(csio,
3555                              /* retries */ 1,
3556                              /* cbfcnp */ cddone,
3557                              /* tag_action */ MSG_SIMPLE_Q_TAG,
3558                              /* scsi_page_fmt */ 1,
3559                              /* save_pages */ 0,
3560                              /* param_buf */ data->mode_buf,
3561                              /* param_len */ param_len,
3562                              /* minimum_cmd_size */ cdb_size,
3563                              /* sense_len */ SSD_FULL_SIZE,
3564                              /* timeout */ 50000);
3565
3566         /* See comments in cdgetmode() and cd6byteworkaround(). */
3567         STAILQ_INSERT_TAIL(&softc->mode_queue, data, links);
3568
3569         error = cdrunccb(ccb, cderror, /*cam_flags*/0,
3570                          /*sense_flags*/SF_RETRY_UA | SF_RETRY_SELTO);
3571
3572         xpt_release_ccb(ccb);
3573
3574         STAILQ_REMOVE(&softc->mode_queue, data, cd_mode_params, links);
3575
3576         return (error);
3577 }
3578
3579
3580
3581 static int
3582 cdplay(struct cam_periph *periph, u_int32_t blk, u_int32_t len)
3583 {
3584         struct ccb_scsiio *csio;
3585         union ccb *ccb;
3586         int error;
3587         u_int8_t cdb_len;
3588
3589         error = 0;
3590         ccb = cdgetccb(periph, /* priority */ 1);
3591         csio = &ccb->csio;
3592         /*
3593          * Use the smallest possible command to perform the operation.
3594          */
3595         if ((len & 0xffff0000) == 0) {
3596                 /*
3597                  * We can fit in a 10 byte cdb.
3598                  */
3599                 struct scsi_play_10 *scsi_cmd;
3600
3601                 scsi_cmd = (struct scsi_play_10 *)&csio->cdb_io.cdb_bytes;
3602                 bzero (scsi_cmd, sizeof(*scsi_cmd));
3603                 scsi_cmd->op_code = PLAY_10;
3604                 scsi_ulto4b(blk, (u_int8_t *)scsi_cmd->blk_addr);
3605                 scsi_ulto2b(len, (u_int8_t *)scsi_cmd->xfer_len);
3606                 cdb_len = sizeof(*scsi_cmd);
3607         } else  {
3608                 struct scsi_play_12 *scsi_cmd;
3609
3610                 scsi_cmd = (struct scsi_play_12 *)&csio->cdb_io.cdb_bytes;
3611                 bzero (scsi_cmd, sizeof(*scsi_cmd));
3612                 scsi_cmd->op_code = PLAY_12;
3613                 scsi_ulto4b(blk, (u_int8_t *)scsi_cmd->blk_addr);
3614                 scsi_ulto4b(len, (u_int8_t *)scsi_cmd->xfer_len);
3615                 cdb_len = sizeof(*scsi_cmd);
3616         }
3617         cam_fill_csio(csio,
3618                       /*retries*/2,
3619                       cddone,
3620                       /*flags*/CAM_DIR_NONE,
3621                       MSG_SIMPLE_Q_TAG,
3622                       /*dataptr*/NULL,
3623                       /*datalen*/0,
3624                       /*sense_len*/SSD_FULL_SIZE,
3625                       cdb_len,
3626                       /*timeout*/50 * 1000);
3627
3628         error = cdrunccb(ccb, cderror, /*cam_flags*/0,
3629                          /*sense_flags*/SF_RETRY_UA | SF_RETRY_SELTO);
3630
3631         xpt_release_ccb(ccb);
3632
3633         return(error);
3634 }
3635
3636 static int
3637 cdplaymsf(struct cam_periph *periph, u_int32_t startm, u_int32_t starts,
3638           u_int32_t startf, u_int32_t endm, u_int32_t ends, u_int32_t endf)
3639 {
3640         struct scsi_play_msf *scsi_cmd;
3641         struct ccb_scsiio *csio;
3642         union ccb *ccb;
3643         int error;
3644
3645         error = 0;
3646
3647         ccb = cdgetccb(periph, /* priority */ 1);
3648
3649         csio = &ccb->csio;
3650
3651         cam_fill_csio(csio,
3652                       /* retries */ 1,
3653                       /* cbfcnp */ cddone,
3654                       /* flags */ CAM_DIR_NONE,
3655                       /* tag_action */ MSG_SIMPLE_Q_TAG,
3656                       /* data_ptr */ NULL,
3657                       /* dxfer_len */ 0,
3658                       /* sense_len */ SSD_FULL_SIZE,
3659                       sizeof(struct scsi_play_msf),
3660                       /* timeout */ 50000);
3661
3662         scsi_cmd = (struct scsi_play_msf *)&csio->cdb_io.cdb_bytes;
3663         bzero (scsi_cmd, sizeof(*scsi_cmd));
3664
3665         scsi_cmd->op_code = PLAY_MSF;
3666         scsi_cmd->start_m = startm;
3667         scsi_cmd->start_s = starts;
3668         scsi_cmd->start_f = startf;
3669         scsi_cmd->end_m = endm;
3670         scsi_cmd->end_s = ends;
3671         scsi_cmd->end_f = endf;
3672
3673         error = cdrunccb(ccb, cderror, /*cam_flags*/0,
3674                          /*sense_flags*/SF_RETRY_UA | SF_RETRY_SELTO);
3675
3676         xpt_release_ccb(ccb);
3677
3678         return(error);
3679 }
3680
3681
3682 static int
3683 cdplaytracks(struct cam_periph *periph, u_int32_t strack, u_int32_t sindex,
3684              u_int32_t etrack, u_int32_t eindex)
3685 {
3686         struct scsi_play_track *scsi_cmd;
3687         struct ccb_scsiio *csio;
3688         union ccb *ccb;
3689         int error;
3690
3691         error = 0;
3692
3693         ccb = cdgetccb(periph, /* priority */ 1);
3694
3695         csio = &ccb->csio;
3696
3697         cam_fill_csio(csio,
3698                       /* retries */ 1,
3699                       /* cbfcnp */ cddone,
3700                       /* flags */ CAM_DIR_NONE,
3701                       /* tag_action */ MSG_SIMPLE_Q_TAG,
3702                       /* data_ptr */ NULL,
3703                       /* dxfer_len */ 0,
3704                       /* sense_len */ SSD_FULL_SIZE,
3705                       sizeof(struct scsi_play_track),
3706                       /* timeout */ 50000);
3707
3708         scsi_cmd = (struct scsi_play_track *)&csio->cdb_io.cdb_bytes;
3709         bzero (scsi_cmd, sizeof(*scsi_cmd));
3710
3711         scsi_cmd->op_code = PLAY_TRACK;
3712         scsi_cmd->start_track = strack;
3713         scsi_cmd->start_index = sindex;
3714         scsi_cmd->end_track = etrack;
3715         scsi_cmd->end_index = eindex;
3716
3717         error = cdrunccb(ccb, cderror, /*cam_flags*/0,
3718                          /*sense_flags*/SF_RETRY_UA | SF_RETRY_SELTO);
3719
3720         xpt_release_ccb(ccb);
3721
3722         return(error);
3723 }
3724
3725 static int
3726 cdpause(struct cam_periph *periph, u_int32_t go)
3727 {
3728         struct scsi_pause *scsi_cmd;
3729         struct ccb_scsiio *csio;
3730         union ccb *ccb;
3731         int error;
3732
3733         error = 0;
3734
3735         ccb = cdgetccb(periph, /* priority */ 1);
3736
3737         csio = &ccb->csio;
3738
3739         cam_fill_csio(csio,
3740                       /* retries */ 1,
3741                       /* cbfcnp */ cddone,
3742                       /* flags */ CAM_DIR_NONE,
3743                       /* tag_action */ MSG_SIMPLE_Q_TAG,
3744                       /* data_ptr */ NULL,
3745                       /* dxfer_len */ 0,
3746                       /* sense_len */ SSD_FULL_SIZE,
3747                       sizeof(struct scsi_pause),
3748                       /* timeout */ 50000);
3749
3750         scsi_cmd = (struct scsi_pause *)&csio->cdb_io.cdb_bytes;
3751         bzero (scsi_cmd, sizeof(*scsi_cmd));
3752
3753         scsi_cmd->op_code = PAUSE;
3754         scsi_cmd->resume = go;
3755
3756         error = cdrunccb(ccb, cderror, /*cam_flags*/0,
3757                          /*sense_flags*/SF_RETRY_UA |SF_RETRY_SELTO);
3758
3759         xpt_release_ccb(ccb);
3760
3761         return(error);
3762 }
3763
3764 static int
3765 cdstartunit(struct cam_periph *periph, int load)
3766 {
3767         union ccb *ccb;
3768         int error;
3769
3770         error = 0;
3771
3772         ccb = cdgetccb(periph, /* priority */ 1);
3773
3774         scsi_start_stop(&ccb->csio,
3775                         /* retries */ 1,
3776                         /* cbfcnp */ cddone,
3777                         /* tag_action */ MSG_SIMPLE_Q_TAG,
3778                         /* start */ TRUE,
3779                         /* load_eject */ load,
3780                         /* immediate */ FALSE,
3781                         /* sense_len */ SSD_FULL_SIZE,
3782                         /* timeout */ 50000);
3783
3784         error = cdrunccb(ccb, cderror, /*cam_flags*/0,
3785                          /*sense_flags*/SF_RETRY_UA | SF_RETRY_SELTO);
3786
3787         xpt_release_ccb(ccb);
3788
3789         return(error);
3790 }
3791
3792 static int
3793 cdstopunit(struct cam_periph *periph, u_int32_t eject)
3794 {
3795         union ccb *ccb;
3796         int error;
3797
3798         error = 0;
3799
3800         ccb = cdgetccb(periph, /* priority */ 1);
3801
3802         scsi_start_stop(&ccb->csio,
3803                         /* retries */ 1,
3804                         /* cbfcnp */ cddone,
3805                         /* tag_action */ MSG_SIMPLE_Q_TAG,
3806                         /* start */ FALSE,
3807                         /* load_eject */ eject,
3808                         /* immediate */ FALSE,
3809                         /* sense_len */ SSD_FULL_SIZE,
3810                         /* timeout */ 50000);
3811
3812         error = cdrunccb(ccb, cderror, /*cam_flags*/0,
3813                          /*sense_flags*/SF_RETRY_UA | SF_RETRY_SELTO);
3814
3815         xpt_release_ccb(ccb);
3816
3817         return(error);
3818 }
3819
3820 static int
3821 cdsetspeed(struct cam_periph *periph, u_int32_t rdspeed, u_int32_t wrspeed)
3822 {
3823         struct scsi_set_speed *scsi_cmd;
3824         struct ccb_scsiio *csio;
3825         union ccb *ccb;
3826         int error;
3827
3828         error = 0;
3829         ccb = cdgetccb(periph, /* priority */ 1);
3830         csio = &ccb->csio;
3831
3832         /* Preserve old behavior: units in multiples of CDROM speed */
3833         if (rdspeed < 177)
3834                 rdspeed *= 177;
3835         if (wrspeed < 177)
3836                 wrspeed *= 177;
3837
3838         cam_fill_csio(csio,
3839                       /* retries */ 1,
3840                       /* cbfcnp */ cddone,
3841                       /* flags */ CAM_DIR_NONE,
3842                       /* tag_action */ MSG_SIMPLE_Q_TAG,
3843                       /* data_ptr */ NULL,
3844                       /* dxfer_len */ 0,
3845                       /* sense_len */ SSD_FULL_SIZE,
3846                       sizeof(struct scsi_set_speed),
3847                       /* timeout */ 50000);
3848
3849         scsi_cmd = (struct scsi_set_speed *)&csio->cdb_io.cdb_bytes;
3850         bzero(scsi_cmd, sizeof(*scsi_cmd));
3851
3852         scsi_cmd->opcode = SET_CD_SPEED;
3853         scsi_ulto2b(rdspeed, scsi_cmd->readspeed);
3854         scsi_ulto2b(wrspeed, scsi_cmd->writespeed);
3855
3856         error = cdrunccb(ccb, cderror, /*cam_flags*/0,
3857                          /*sense_flags*/SF_RETRY_UA | SF_RETRY_SELTO);
3858
3859         xpt_release_ccb(ccb);
3860
3861         return(error);
3862 }
3863
3864 static int
3865 cdreportkey(struct cam_periph *periph, struct dvd_authinfo *authinfo)
3866 {
3867         union ccb *ccb;
3868         u_int8_t *databuf;
3869         u_int32_t lba;
3870         int error;
3871         int length;
3872
3873         error = 0;
3874         databuf = NULL;
3875         lba = 0;
3876
3877         ccb = cdgetccb(periph, /* priority */ 1);
3878
3879         switch (authinfo->format) {
3880         case DVD_REPORT_AGID:
3881                 length = sizeof(struct scsi_report_key_data_agid);
3882                 break;
3883         case DVD_REPORT_CHALLENGE:
3884                 length = sizeof(struct scsi_report_key_data_challenge);
3885                 break;
3886         case DVD_REPORT_KEY1:
3887                 length = sizeof(struct scsi_report_key_data_key1_key2);
3888                 break;
3889         case DVD_REPORT_TITLE_KEY:
3890                 length = sizeof(struct scsi_report_key_data_title);
3891                 /* The lba field is only set for the title key */
3892                 lba = authinfo->lba;
3893                 break;
3894         case DVD_REPORT_ASF:
3895                 length = sizeof(struct scsi_report_key_data_asf);
3896                 break;
3897         case DVD_REPORT_RPC:
3898                 length = sizeof(struct scsi_report_key_data_rpc);
3899                 break;
3900         case DVD_INVALIDATE_AGID:
3901                 length = 0;
3902                 break;
3903         default:
3904                 error = EINVAL;
3905                 goto bailout;
3906                 break; /* NOTREACHED */
3907         }
3908
3909         if (length != 0) {
3910                 databuf = malloc(length, M_DEVBUF, M_INTWAIT | M_ZERO);
3911         } else {
3912                 databuf = NULL;
3913         }
3914
3915
3916         scsi_report_key(&ccb->csio,
3917                         /* retries */ 1,
3918                         /* cbfcnp */ cddone,
3919                         /* tag_action */ MSG_SIMPLE_Q_TAG,
3920                         /* lba */ lba,
3921                         /* agid */ authinfo->agid,
3922                         /* key_format */ authinfo->format,
3923                         /* data_ptr */ databuf,
3924                         /* dxfer_len */ length,
3925                         /* sense_len */ SSD_FULL_SIZE,
3926                         /* timeout */ 50000);
3927
3928         error = cdrunccb(ccb, cderror, /*cam_flags*/0,
3929                          /*sense_flags*/SF_RETRY_UA | SF_RETRY_SELTO);
3930
3931         if (error != 0)
3932                 goto bailout;
3933
3934         if (ccb->csio.resid != 0) {
3935                 xpt_print_path(periph->path);
3936                 printf("warning, residual for report key command is %d\n",
3937                        ccb->csio.resid);
3938         }
3939
3940         switch(authinfo->format) {
3941         case DVD_REPORT_AGID: {
3942                 struct scsi_report_key_data_agid *agid_data;
3943
3944                 agid_data = (struct scsi_report_key_data_agid *)databuf;
3945
3946                 authinfo->agid = (agid_data->agid & RKD_AGID_MASK) >>
3947                         RKD_AGID_SHIFT;
3948                 break;
3949         }
3950         case DVD_REPORT_CHALLENGE: {
3951                 struct scsi_report_key_data_challenge *chal_data;
3952
3953                 chal_data = (struct scsi_report_key_data_challenge *)databuf;
3954
3955                 bcopy(chal_data->challenge_key, authinfo->keychal,
3956                       min(sizeof(chal_data->challenge_key),
3957                           sizeof(authinfo->keychal)));
3958                 break;
3959         }
3960         case DVD_REPORT_KEY1: {
3961                 struct scsi_report_key_data_key1_key2 *key1_data;
3962
3963                 key1_data = (struct scsi_report_key_data_key1_key2 *)databuf;
3964
3965                 bcopy(key1_data->key1, authinfo->keychal,
3966                       min(sizeof(key1_data->key1), sizeof(authinfo->keychal)));
3967                 break;
3968         }
3969         case DVD_REPORT_TITLE_KEY: {
3970                 struct scsi_report_key_data_title *title_data;
3971
3972                 title_data = (struct scsi_report_key_data_title *)databuf;
3973
3974                 authinfo->cpm = (title_data->byte0 & RKD_TITLE_CPM) >>
3975                         RKD_TITLE_CPM_SHIFT;
3976                 authinfo->cp_sec = (title_data->byte0 & RKD_TITLE_CP_SEC) >>
3977                         RKD_TITLE_CP_SEC_SHIFT;
3978                 authinfo->cgms = (title_data->byte0 & RKD_TITLE_CMGS_MASK) >>
3979                         RKD_TITLE_CMGS_SHIFT;
3980                 bcopy(title_data->title_key, authinfo->keychal,
3981                       min(sizeof(title_data->title_key),
3982                           sizeof(authinfo->keychal)));
3983                 break;
3984         }
3985         case DVD_REPORT_ASF: {
3986                 struct scsi_report_key_data_asf *asf_data;
3987
3988                 asf_data = (struct scsi_report_key_data_asf *)databuf;
3989
3990                 authinfo->asf = asf_data->success & RKD_ASF_SUCCESS;
3991                 break;
3992         }
3993         case DVD_REPORT_RPC: {
3994                 struct scsi_report_key_data_rpc *rpc_data;
3995
3996                 rpc_data = (struct scsi_report_key_data_rpc *)databuf;
3997
3998                 authinfo->reg_type = (rpc_data->byte4 & RKD_RPC_TYPE_MASK) >>
3999                         RKD_RPC_TYPE_SHIFT;
4000                 authinfo->vend_rsts =
4001                         (rpc_data->byte4 & RKD_RPC_VENDOR_RESET_MASK) >>
4002                         RKD_RPC_VENDOR_RESET_SHIFT;
4003                 authinfo->user_rsts = rpc_data->byte4 & RKD_RPC_USER_RESET_MASK;
4004                 authinfo->region = rpc_data->region_mask;
4005                 authinfo->rpc_scheme = rpc_data->rpc_scheme1;
4006                 break;
4007         }
4008         case DVD_INVALIDATE_AGID:
4009                 break;
4010         default:
4011                 /* This should be impossible, since we checked above */
4012                 error = EINVAL;
4013                 goto bailout;
4014                 break; /* NOTREACHED */
4015         }
4016 bailout:
4017         if (databuf != NULL)
4018                 free(databuf, M_DEVBUF);
4019
4020         xpt_release_ccb(ccb);
4021
4022         return(error);
4023 }
4024
4025 static int
4026 cdsendkey(struct cam_periph *periph, struct dvd_authinfo *authinfo)
4027 {
4028         union ccb *ccb;
4029         u_int8_t *databuf;
4030         int length;
4031         int error;
4032
4033         error = 0;
4034         databuf = NULL;
4035
4036         ccb = cdgetccb(periph, /* priority */ 1);
4037
4038         switch(authinfo->format) {
4039         case DVD_SEND_CHALLENGE: {
4040                 struct scsi_report_key_data_challenge *challenge_data;
4041
4042                 length = sizeof(*challenge_data);
4043
4044                 challenge_data = malloc(length, M_DEVBUF, M_INTWAIT | M_ZERO);
4045
4046                 databuf = (u_int8_t *)challenge_data;
4047
4048                 scsi_ulto2b(length - sizeof(challenge_data->data_len),
4049                             challenge_data->data_len);
4050
4051                 bcopy(authinfo->keychal, challenge_data->challenge_key,
4052                       min(sizeof(authinfo->keychal),
4053                           sizeof(challenge_data->challenge_key)));
4054                 break;
4055         }
4056         case DVD_SEND_KEY2: {
4057                 struct scsi_report_key_data_key1_key2 *key2_data;
4058
4059                 length = sizeof(*key2_data);
4060
4061                 key2_data = malloc(length, M_DEVBUF, M_INTWAIT | M_ZERO);
4062
4063                 databuf = (u_int8_t *)key2_data;
4064
4065                 scsi_ulto2b(length - sizeof(key2_data->data_len),
4066                             key2_data->data_len);
4067
4068                 bcopy(authinfo->keychal, key2_data->key1,
4069                       min(sizeof(authinfo->keychal), sizeof(key2_data->key1)));
4070
4071                 break;
4072         }
4073         case DVD_SEND_RPC: {
4074                 struct scsi_send_key_data_rpc *rpc_data;
4075
4076                 length = sizeof(*rpc_data);
4077
4078                 rpc_data = malloc(length, M_DEVBUF, M_INTWAIT | M_ZERO);
4079
4080                 databuf = (u_int8_t *)rpc_data;
4081
4082                 scsi_ulto2b(length - sizeof(rpc_data->data_len),
4083                             rpc_data->data_len);
4084
4085                 rpc_data->region_code = authinfo->region;
4086                 break;
4087         }
4088         default:
4089                 error = EINVAL;
4090                 goto bailout;
4091                 break; /* NOTREACHED */
4092         }
4093
4094         scsi_send_key(&ccb->csio,
4095                       /* retries */ 1,
4096                       /* cbfcnp */ cddone,
4097                       /* tag_action */ MSG_SIMPLE_Q_TAG,
4098                       /* agid */ authinfo->agid,
4099                       /* key_format */ authinfo->format,
4100                       /* data_ptr */ databuf,
4101                       /* dxfer_len */ length,
4102                       /* sense_len */ SSD_FULL_SIZE,
4103                       /* timeout */ 50000);
4104
4105         error = cdrunccb(ccb, cderror, /*cam_flags*/0,
4106                          /*sense_flags*/SF_RETRY_UA | SF_RETRY_SELTO);
4107
4108 bailout:
4109
4110         if (databuf != NULL)
4111                 free(databuf, M_DEVBUF);
4112
4113         xpt_release_ccb(ccb);
4114
4115         return(error);
4116 }
4117
4118 static int
4119 cdreaddvdstructure(struct cam_periph *periph, struct dvd_struct *dvdstruct)
4120 {
4121         union ccb *ccb;
4122         u_int8_t *databuf;
4123         u_int32_t address;
4124         int error;
4125         int length;
4126
4127         error = 0;
4128         databuf = NULL;
4129         /* The address is reserved for many of the formats */
4130         address = 0;
4131
4132         ccb = cdgetccb(periph, /* priority */ 1);
4133
4134         switch(dvdstruct->format) {
4135         case DVD_STRUCT_PHYSICAL:
4136                 length = sizeof(struct scsi_read_dvd_struct_data_physical);
4137                 break;
4138         case DVD_STRUCT_COPYRIGHT:
4139                 length = sizeof(struct scsi_read_dvd_struct_data_copyright);
4140                 break;
4141         case DVD_STRUCT_DISCKEY:
4142                 length = sizeof(struct scsi_read_dvd_struct_data_disc_key);
4143                 break;
4144         case DVD_STRUCT_BCA:
4145                 length = sizeof(struct scsi_read_dvd_struct_data_bca);
4146                 break;
4147         case DVD_STRUCT_MANUFACT:
4148                 length = sizeof(struct scsi_read_dvd_struct_data_manufacturer);
4149                 break;
4150         case DVD_STRUCT_CMI:
4151                 error = ENODEV;
4152                 goto bailout;
4153 #ifdef notyet
4154                 length = sizeof(struct scsi_read_dvd_struct_data_copy_manage);
4155                 address = dvdstruct->address;
4156 #endif
4157                 break; /* NOTREACHED */
4158         case DVD_STRUCT_PROTDISCID:
4159                 length = sizeof(struct scsi_read_dvd_struct_data_prot_discid);
4160                 break;
4161         case DVD_STRUCT_DISCKEYBLOCK:
4162                 length = sizeof(struct scsi_read_dvd_struct_data_disc_key_blk);
4163                 break;
4164         case DVD_STRUCT_DDS:
4165                 length = sizeof(struct scsi_read_dvd_struct_data_dds);
4166                 break;
4167         case DVD_STRUCT_MEDIUM_STAT:
4168                 length = sizeof(struct scsi_read_dvd_struct_data_medium_status);
4169                 break;
4170         case DVD_STRUCT_SPARE_AREA:
4171                 length = sizeof(struct scsi_read_dvd_struct_data_spare_area);
4172                 break;
4173         case DVD_STRUCT_RMD_LAST:
4174                 error = ENODEV;
4175                 goto bailout;
4176 #ifdef notyet
4177                 length = sizeof(struct scsi_read_dvd_struct_data_rmd_borderout);
4178                 address = dvdstruct->address;
4179 #endif
4180                 break; /* NOTREACHED */
4181         case DVD_STRUCT_RMD_RMA:
4182                 error = ENODEV;
4183                 goto bailout;
4184 #ifdef notyet
4185                 length = sizeof(struct scsi_read_dvd_struct_data_rmd);
4186                 address = dvdstruct->address;
4187 #endif
4188                 break; /* NOTREACHED */
4189         case DVD_STRUCT_PRERECORDED:
4190                 length = sizeof(struct scsi_read_dvd_struct_data_leadin);
4191                 break;
4192         case DVD_STRUCT_UNIQUEID:
4193                 length = sizeof(struct scsi_read_dvd_struct_data_disc_id);
4194                 break;
4195         case DVD_STRUCT_DCB:
4196                 error = ENODEV;
4197                 goto bailout;
4198 #ifdef notyet
4199                 length = sizeof(struct scsi_read_dvd_struct_data_dcb);
4200                 address = dvdstruct->address;
4201 #endif
4202                 break; /* NOTREACHED */
4203         case DVD_STRUCT_LIST:
4204                 /*
4205                  * This is the maximum allocation length for the READ DVD
4206                  * STRUCTURE command.  There's nothing in the MMC3 spec
4207                  * that indicates a limit in the amount of data that can
4208                  * be returned from this call, other than the limits
4209                  * imposed by the 2-byte length variables.
4210                  */
4211                 length = 65535;
4212                 break;
4213         default:
4214                 error = EINVAL;
4215                 goto bailout;
4216                 break; /* NOTREACHED */
4217         }
4218
4219         if (length != 0) {
4220                 databuf = malloc(length, M_DEVBUF, M_INTWAIT | M_ZERO);
4221         } else {
4222                 databuf = NULL;
4223         }
4224
4225         scsi_read_dvd_structure(&ccb->csio,
4226                                 /* retries */ 1,
4227                                 /* cbfcnp */ cddone,
4228                                 /* tag_action */ MSG_SIMPLE_Q_TAG,
4229                                 /* lba */ address,
4230                                 /* layer_number */ dvdstruct->layer_num,
4231                                 /* key_format */ dvdstruct->format,
4232                                 /* agid */ dvdstruct->agid,
4233                                 /* data_ptr */ databuf,
4234                                 /* dxfer_len */ length,
4235                                 /* sense_len */ SSD_FULL_SIZE,
4236                                 /* timeout */ 50000);
4237
4238         error = cdrunccb(ccb, cderror, /*cam_flags*/0,
4239                          /*sense_flags*/SF_RETRY_UA | SF_RETRY_SELTO);
4240
4241         if (error != 0)
4242                 goto bailout;
4243
4244         switch(dvdstruct->format) {
4245         case DVD_STRUCT_PHYSICAL: {
4246                 struct scsi_read_dvd_struct_data_layer_desc *inlayer;
4247                 struct dvd_layer *outlayer;
4248                 struct scsi_read_dvd_struct_data_physical *phys_data;
4249
4250                 phys_data =
4251                         (struct scsi_read_dvd_struct_data_physical *)databuf;
4252                 inlayer = &phys_data->layer_desc;
4253                 outlayer = (struct dvd_layer *)&dvdstruct->data;
4254
4255                 dvdstruct->length = sizeof(*inlayer);
4256
4257                 outlayer->book_type = (inlayer->book_type_version &
4258                         RDSD_BOOK_TYPE_MASK) >> RDSD_BOOK_TYPE_SHIFT;
4259                 outlayer->book_version = (inlayer->book_type_version &
4260                         RDSD_BOOK_VERSION_MASK);
4261                 outlayer->disc_size = (inlayer->disc_size_max_rate &
4262                         RDSD_DISC_SIZE_MASK) >> RDSD_DISC_SIZE_SHIFT;
4263                 outlayer->max_rate = (inlayer->disc_size_max_rate &
4264                         RDSD_MAX_RATE_MASK);
4265                 outlayer->nlayers = (inlayer->layer_info &
4266                         RDSD_NUM_LAYERS_MASK) >> RDSD_NUM_LAYERS_SHIFT;
4267                 outlayer->track_path = (inlayer->layer_info &
4268                         RDSD_TRACK_PATH_MASK) >> RDSD_TRACK_PATH_SHIFT;
4269                 outlayer->layer_type = (inlayer->layer_info &
4270                         RDSD_LAYER_TYPE_MASK);
4271                 outlayer->linear_density = (inlayer->density &
4272                         RDSD_LIN_DENSITY_MASK) >> RDSD_LIN_DENSITY_SHIFT;
4273                 outlayer->track_density = (inlayer->density &
4274                         RDSD_TRACK_DENSITY_MASK);
4275                 outlayer->bca = (inlayer->bca & RDSD_BCA_MASK) >>
4276                         RDSD_BCA_SHIFT;
4277                 outlayer->start_sector = scsi_3btoul(inlayer->main_data_start);
4278                 outlayer->end_sector = scsi_3btoul(inlayer->main_data_end);
4279                 outlayer->end_sector_l0 =
4280                         scsi_3btoul(inlayer->end_sector_layer0);
4281                 break;
4282         }
4283         case DVD_STRUCT_COPYRIGHT: {
4284                 struct scsi_read_dvd_struct_data_copyright *copy_data;
4285
4286                 copy_data = (struct scsi_read_dvd_struct_data_copyright *)
4287                         databuf;
4288
4289                 dvdstruct->cpst = copy_data->cps_type;
4290                 dvdstruct->rmi = copy_data->region_info;
4291                 dvdstruct->length = 0;
4292
4293                 break;
4294         }
4295         default:
4296                 /*
4297                  * Tell the user what the overall length is, no matter
4298                  * what we can actually fit in the data buffer.
4299                  */
4300                 dvdstruct->length = length - ccb->csio.resid -
4301                         sizeof(struct scsi_read_dvd_struct_data_header);
4302
4303                 /*
4304                  * But only actually copy out the smaller of what we read
4305                  * in or what the structure can take.
4306                  */
4307                 bcopy(databuf + sizeof(struct scsi_read_dvd_struct_data_header),
4308                       dvdstruct->data,
4309                       min(sizeof(dvdstruct->data), dvdstruct->length));
4310                 break;
4311         }
4312 bailout:
4313
4314         if (databuf != NULL)
4315                 free(databuf, M_DEVBUF);
4316
4317         xpt_release_ccb(ccb);
4318
4319         return(error);
4320 }
4321
4322 void
4323 scsi_report_key(struct ccb_scsiio *csio, u_int32_t retries,
4324                 void (*cbfcnp)(struct cam_periph *, union ccb *),
4325                 u_int8_t tag_action, u_int32_t lba, u_int8_t agid,
4326                 u_int8_t key_format, u_int8_t *data_ptr, u_int32_t dxfer_len,
4327                 u_int8_t sense_len, u_int32_t timeout)
4328 {
4329         struct scsi_report_key *scsi_cmd;
4330
4331         scsi_cmd = (struct scsi_report_key *)&csio->cdb_io.cdb_bytes;
4332         bzero(scsi_cmd, sizeof(*scsi_cmd));
4333         scsi_cmd->opcode = REPORT_KEY;
4334         scsi_ulto4b(lba, scsi_cmd->lba);
4335         scsi_ulto2b(dxfer_len, scsi_cmd->alloc_len);
4336         scsi_cmd->agid_keyformat = (agid << RK_KF_AGID_SHIFT) |
4337                 (key_format & RK_KF_KEYFORMAT_MASK);
4338
4339         cam_fill_csio(csio,
4340                       retries,
4341                       cbfcnp,
4342                       /*flags*/ (dxfer_len == 0) ? CAM_DIR_NONE : CAM_DIR_IN,
4343                       tag_action,
4344                       /*data_ptr*/ data_ptr,
4345                       /*dxfer_len*/ dxfer_len,
4346                       sense_len,
4347                       sizeof(*scsi_cmd),
4348                       timeout);
4349 }
4350
4351 void
4352 scsi_send_key(struct ccb_scsiio *csio, u_int32_t retries,
4353               void (*cbfcnp)(struct cam_periph *, union ccb *),
4354               u_int8_t tag_action, u_int8_t agid, u_int8_t key_format,
4355               u_int8_t *data_ptr, u_int32_t dxfer_len, u_int8_t sense_len,
4356               u_int32_t timeout)
4357 {
4358         struct scsi_send_key *scsi_cmd;
4359
4360         scsi_cmd = (struct scsi_send_key *)&csio->cdb_io.cdb_bytes;
4361         bzero(scsi_cmd, sizeof(*scsi_cmd));
4362         scsi_cmd->opcode = SEND_KEY;
4363
4364         scsi_ulto2b(dxfer_len, scsi_cmd->param_len);
4365         scsi_cmd->agid_keyformat = (agid << RK_KF_AGID_SHIFT) |
4366                 (key_format & RK_KF_KEYFORMAT_MASK);
4367
4368         cam_fill_csio(csio,
4369                       retries,
4370                       cbfcnp,
4371                       /*flags*/ CAM_DIR_OUT,
4372                       tag_action,
4373                       /*data_ptr*/ data_ptr,
4374                       /*dxfer_len*/ dxfer_len,
4375                       sense_len,
4376                       sizeof(*scsi_cmd),
4377                       timeout);
4378 }
4379
4380
4381 void
4382 scsi_read_dvd_structure(struct ccb_scsiio *csio, u_int32_t retries,
4383                         void (*cbfcnp)(struct cam_periph *, union ccb *),
4384                         u_int8_t tag_action, u_int32_t address,
4385                         u_int8_t layer_number, u_int8_t format, u_int8_t agid,
4386                         u_int8_t *data_ptr, u_int32_t dxfer_len,
4387                         u_int8_t sense_len, u_int32_t timeout)
4388 {
4389         struct scsi_read_dvd_structure *scsi_cmd;
4390
4391         scsi_cmd = (struct scsi_read_dvd_structure *)&csio->cdb_io.cdb_bytes;
4392         bzero(scsi_cmd, sizeof(*scsi_cmd));
4393         scsi_cmd->opcode = READ_DVD_STRUCTURE;
4394
4395         scsi_ulto4b(address, scsi_cmd->address);
4396         scsi_cmd->layer_number = layer_number;
4397         scsi_cmd->format = format;
4398         scsi_ulto2b(dxfer_len, scsi_cmd->alloc_len);
4399         /* The AGID is the top two bits of this byte */
4400         scsi_cmd->agid = agid << 6;
4401
4402         cam_fill_csio(csio,
4403                       retries,
4404                       cbfcnp,
4405                       /*flags*/ CAM_DIR_IN,
4406                       tag_action,
4407                       /*data_ptr*/ data_ptr,
4408                       /*dxfer_len*/ dxfer_len,
4409                       sense_len,
4410                       sizeof(*scsi_cmd),
4411                       timeout);
4412 }