sys/cam/scsi/scsi_cd.c

   1 /*-
   2  * Copyright (c) 1997 Justin T. Gibbs.
   3  * Copyright (c) 1997, 1998, 1999, 2000, 2001, 2002, 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
  28 /*-
  29  * Portions of this driver taken from the original FreeBSD cd driver.
  30  * Written by Julian Elischer (julian@tfs.com)
  31  * for TRW Financial Systems for use under the MACH(2.5) operating system.
  32  *
  33  * TRW Financial Systems, in accordance with their agreement with Carnegie
  34  * Mellon University, makes this software available to CMU to distribute
  35  * or use in any manner that they see fit as long as this message is kept with
  36  * the software. For this reason TFS also grants any other persons or
  37  * organisations permission to use or modify this software.
  38  *
  39  * TFS supplies this software to be publicly redistributed
  40  * on the understanding that TFS is not responsible for the correct
  41  * functioning of this software in any circumstances.
  42  *
  43  * Ported to run under 386BSD by Julian Elischer (julian@tfs.com) Sept 1992
  44  *
  45  *      from: cd.c,v 1.83 1997/05/04 15:24:22 joerg Exp $
  46  */
  47
  48 #include <sys/cdefs.h>
  49 __FBSDID("$FreeBSD$");
  50
  51 #include "opt_cd.h"
  52
  53 #include <sys/param.h>
  54 #include <sys/systm.h>
  55 #include <sys/kernel.h>
  56 #include <sys/bio.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 <geom/geom_disk.h>
  67
  68 #include <cam/cam.h>
  69 #include <cam/cam_ccb.h>
  70 #include <cam/cam_periph.h>
  71 #include <cam/cam_xpt_periph.h>
  72 #include <cam/cam_queue.h>
  73 #include <cam/cam_sim.h>
  74
  75 #include <cam/scsi/scsi_message.h>
  76 #include <cam/scsi/scsi_da.h>
  77 #include <cam/scsi/scsi_cd.h>
  78
  79 #define LEADOUT         0xaa            /* leadout toc entry */
  80
  81 struct cd_params {
  82         u_int32_t blksize;
  83         u_long    disksize;
  84 };
  85
  86 typedef enum {
  87         CD_Q_NONE               = 0x00,
  88         CD_Q_NO_TOUCH           = 0x01,
  89         CD_Q_BCD_TRACKS         = 0x02,
  90         CD_Q_NO_CHANGER         = 0x04,
  91         CD_Q_CHANGER            = 0x08,
  92         CD_Q_10_BYTE_ONLY       = 0x10
  93 } cd_quirks;
  94
  95 #define CD_Q_BIT_STRING         \
  96         "\020"                  \
  97         "\001NO_TOUCH"          \
  98         "\002BCD_TRACKS"        \
  99         "\003NO_CHANGER"        \
 100         "\004CHANGER"           \
 101         "\00510_BYTE_ONLY"
 102
 103 typedef enum {
 104         CD_FLAG_INVALID         = 0x0001,
 105         CD_FLAG_NEW_DISC        = 0x0002,
 106         CD_FLAG_DISC_LOCKED     = 0x0004,
 107         CD_FLAG_DISC_REMOVABLE  = 0x0008,
 108         CD_FLAG_SAW_MEDIA       = 0x0010,
 109         CD_FLAG_CHANGER         = 0x0040,
 110         CD_FLAG_ACTIVE          = 0x0080,
 111         CD_FLAG_SCHED_ON_COMP   = 0x0100,
 112         CD_FLAG_RETRY_UA        = 0x0200,
 113         CD_FLAG_VALID_MEDIA     = 0x0400,
 114         CD_FLAG_VALID_TOC       = 0x0800,
 115         CD_FLAG_SCTX_INIT       = 0x1000
 116 } cd_flags;
 117
 118 typedef enum {
 119         CD_CCB_PROBE            = 0x01,
 120         CD_CCB_BUFFER_IO        = 0x02,
 121         CD_CCB_WAITING          = 0x03,
 122         CD_CCB_TUR              = 0x04,
 123         CD_CCB_TYPE_MASK        = 0x0F,
 124         CD_CCB_RETRY_UA         = 0x10
 125 } cd_ccb_state;
 126
 127 typedef enum {
 128         CHANGER_TIMEOUT_SCHED           = 0x01,
 129         CHANGER_SHORT_TMOUT_SCHED       = 0x02,
 130         CHANGER_MANUAL_CALL             = 0x04,
 131         CHANGER_NEED_TIMEOUT            = 0x08
 132 } cd_changer_flags;
 133
 134 #define ccb_state ppriv_field0
 135 #define ccb_bp ppriv_ptr1
 136
 137 struct cd_tocdata {
 138         struct ioc_toc_header header;
 139         struct cd_toc_entry entries[100];
 140 };
 141
 142 struct cd_toc_single {
 143         struct ioc_toc_header header;
 144         struct cd_toc_entry entry;
 145 };
 146
 147 typedef enum {
 148         CD_STATE_PROBE,
 149         CD_STATE_NORMAL
 150 } cd_state;
 151
 152 struct cd_softc {
 153         cam_pinfo               pinfo;
 154         cd_state                state;
 155         volatile cd_flags       flags;
 156         struct bio_queue_head   bio_queue;
 157         LIST_HEAD(, ccb_hdr)    pending_ccbs;
 158         struct cd_params        params;
 159         union ccb               saved_ccb;
 160         cd_quirks               quirks;
 161         STAILQ_ENTRY(cd_softc)  changer_links;
 162         struct cdchanger        *changer;
 163         int                     bufs_left;
 164         struct cam_periph       *periph;
 165         int                     minimum_command_size;
 166         int                     outstanding_cmds;
 167         int                     tur;
 168         struct task             sysctl_task;
 169         struct sysctl_ctx_list  sysctl_ctx;
 170         struct sysctl_oid       *sysctl_tree;
 171         STAILQ_HEAD(, cd_mode_params)   mode_queue;
 172         struct cd_tocdata       toc;
 173         struct disk             *disk;
 174         struct callout          mediapoll_c;
 175 };
 176
 177 struct cd_page_sizes {
 178         int page;
 179         int page_size;
 180 };
 181
 182 static struct cd_page_sizes cd_page_size_table[] =
 183 {
 184         { AUDIO_PAGE, sizeof(struct cd_audio_page)}
 185 };
 186
 187 struct cd_quirk_entry {
 188         struct scsi_inquiry_pattern inq_pat;
 189         cd_quirks quirks;
 190 };
 191
 192 /*
 193  * The changer quirk entries aren't strictly necessary.  Basically, what
 194  * they do is tell cdregister() up front that a device is a changer.
 195  * Otherwise, it will figure that fact out once it sees a LUN on the device
 196  * that is greater than 0.  If it is known up front that a device is a changer,
 197  * all I/O to the device will go through the changer scheduling routines, as
 198  * opposed to the "normal" CD code.
 199  *
 200  * NOTE ON 10_BYTE_ONLY quirks:  Any 10_BYTE_ONLY quirks MUST be because
 201  * your device hangs when it gets a 10 byte command.  Adding a quirk just
 202  * to get rid of the informative diagnostic message is not acceptable.  All
 203  * 10_BYTE_ONLY quirks must be documented in full in a PR (which should be
 204  * referenced in a comment along with the quirk) , and must be approved by
 205  * ken@FreeBSD.org.  Any quirks added that don't adhere to this policy may
 206  * be removed until the submitter can explain why they are needed.
 207  * 10_BYTE_ONLY quirks will be removed (as they will no longer be necessary)
 208  * when the CAM_NEW_TRAN_CODE work is done.
 209  */
 210 static struct cd_quirk_entry cd_quirk_table[] =
 211 {
 212         {
 213                 { T_CDROM, SIP_MEDIA_REMOVABLE, "NRC", "MBR-7", "*"},
 214                  /*quirks*/ CD_Q_CHANGER
 215         },
 216         {
 217                 { T_CDROM, SIP_MEDIA_REMOVABLE, "PIONEER", "CD-ROM DRM*",
 218                   "*"}, /* quirks */ CD_Q_CHANGER
 219         },
 220         {
 221                 { T_CDROM, SIP_MEDIA_REMOVABLE, "NAKAMICH", "MJ-*", "*"},
 222                  /* quirks */ CD_Q_CHANGER
 223         },
 224         {
 225                 { T_CDROM, SIP_MEDIA_REMOVABLE, "CHINON", "CD-ROM CDS-535","*"},
 226                 /* quirks */ CD_Q_BCD_TRACKS
 227         }
 228 };
 229
 230 static  disk_open_t     cdopen;
 231 static  disk_close_t    cdclose;
 232 static  disk_ioctl_t    cdioctl;
 233 static  disk_strategy_t cdstrategy;
 234
 235 static  periph_init_t   cdinit;
 236 static  periph_ctor_t   cdregister;
 237 static  periph_dtor_t   cdcleanup;
 238 static  periph_start_t  cdstart;
 239 static  periph_oninv_t  cdoninvalidate;
 240 static  void            cdasync(void *callback_arg, u_int32_t code,
 241                                 struct cam_path *path, void *arg);
 242 static  int             cdcmdsizesysctl(SYSCTL_HANDLER_ARGS);
 243 static  void            cdshorttimeout(void *arg);
 244 static  void            cdschedule(struct cam_periph *periph, int priority);
 245 static  void            cdrunchangerqueue(void *arg);
 246 static  void            cdchangerschedule(struct cd_softc *softc);
 247 static  int             cdrunccb(union ccb *ccb,
 248                                  int (*error_routine)(union ccb *ccb,
 249                                                       u_int32_t cam_flags,
 250                                                       u_int32_t sense_flags),
 251                                  u_int32_t cam_flags, u_int32_t sense_flags);
 252 static  union ccb       *cdgetccb(struct cam_periph *periph,
 253                                   u_int32_t priority);
 254 static  void            cddone(struct cam_periph *periph,
 255                                union ccb *start_ccb);
 256 static  union cd_pages  *cdgetpage(struct cd_mode_params *mode_params);
 257 static  int             cdgetpagesize(int page_num);
 258 static  void            cdprevent(struct cam_periph *periph, int action);
 259 static  int             cdcheckmedia(struct cam_periph *periph);
 260 static  int             cdsize(struct cam_periph *periph, u_int32_t *size);
 261 static  int             cd6byteworkaround(union ccb *ccb);
 262 static  int             cderror(union ccb *ccb, u_int32_t cam_flags,
 263                                 u_int32_t sense_flags);
 264 static  int             cdreadtoc(struct cam_periph *periph, u_int32_t mode,
 265                                   u_int32_t start, u_int8_t *data,
 266                                   u_int32_t len, u_int32_t sense_flags);
 267 static  int             cdgetmode(struct cam_periph *periph,
 268                                   struct cd_mode_params *data, u_int32_t page);
 269 static  int             cdsetmode(struct cam_periph *periph,
 270                                   struct cd_mode_params *data);
 271 static  int             cdplay(struct cam_periph *periph, u_int32_t blk,
 272                                u_int32_t len);
 273 static  int             cdreadsubchannel(struct cam_periph *periph,
 274                                          u_int32_t mode, u_int32_t format,
 275                                          int track,
 276                                          struct cd_sub_channel_info *data,
 277                                          u_int32_t len);
 278 static  int             cdplaymsf(struct cam_periph *periph, u_int32_t startm,
 279                                   u_int32_t starts, u_int32_t startf,
 280                                   u_int32_t endm, u_int32_t ends,
 281                                   u_int32_t endf);
 282 static  int             cdplaytracks(struct cam_periph *periph,
 283                                      u_int32_t strack, u_int32_t sindex,
 284                                      u_int32_t etrack, u_int32_t eindex);
 285 static  int             cdpause(struct cam_periph *periph, u_int32_t go);
 286 static  int             cdstopunit(struct cam_periph *periph, u_int32_t eject);
 287 static  int             cdstartunit(struct cam_periph *periph, int load);
 288 static  int             cdsetspeed(struct cam_periph *periph,
 289                                    u_int32_t rdspeed, u_int32_t wrspeed);
 290 static  int             cdreportkey(struct cam_periph *periph,
 291                                     struct dvd_authinfo *authinfo);
 292 static  int             cdsendkey(struct cam_periph *periph,
 293                                   struct dvd_authinfo *authinfo);
 294 static  int             cdreaddvdstructure(struct cam_periph *periph,
 295                                            struct dvd_struct *dvdstruct);
 296 static timeout_t        cdmediapoll;
 297
 298 static struct periph_driver cddriver =
 299 {
 300         cdinit, "cd",
 301         TAILQ_HEAD_INITIALIZER(cddriver.units), /* generation */ 0
 302 };
 303
 304 PERIPHDRIVER_DECLARE(cd, cddriver);
 305
 306 #ifndef CD_DEFAULT_POLL_PERIOD
 307 #define CD_DEFAULT_POLL_PERIOD  3
 308 #endif
 309 #ifndef CD_DEFAULT_RETRY
 310 #define CD_DEFAULT_RETRY        4
 311 #endif
 312 #ifndef CD_DEFAULT_TIMEOUT
 313 #define CD_DEFAULT_TIMEOUT      30000
 314 #endif
 315 #ifndef CHANGER_MIN_BUSY_SECONDS
 316 #define CHANGER_MIN_BUSY_SECONDS        5
 317 #endif
 318 #ifndef CHANGER_MAX_BUSY_SECONDS
 319 #define CHANGER_MAX_BUSY_SECONDS        15
 320 #endif
 321
 322 static int cd_poll_period = CD_DEFAULT_POLL_PERIOD;
 323 static int cd_retry_count = CD_DEFAULT_RETRY;
 324 static int cd_timeout = CD_DEFAULT_TIMEOUT;
 325 static int changer_min_busy_seconds = CHANGER_MIN_BUSY_SECONDS;
 326 static int changer_max_busy_seconds = CHANGER_MAX_BUSY_SECONDS;
 327
 328 static SYSCTL_NODE(_kern_cam, OID_AUTO, cd, CTLFLAG_RD, 0, "CAM CDROM driver");
 329 static SYSCTL_NODE(_kern_cam_cd, OID_AUTO, changer, CTLFLAG_RD, 0,
 330     "CD Changer");
 331 SYSCTL_INT(_kern_cam_cd, OID_AUTO, poll_period, CTLFLAG_RW,
 332            &cd_poll_period, 0, "Media polling period in seconds");
 333 TUNABLE_INT("kern.cam.cd.poll_period", &cd_poll_period);
 334 SYSCTL_INT(_kern_cam_cd, OID_AUTO, retry_count, CTLFLAG_RW,
 335            &cd_retry_count, 0, "Normal I/O retry count");
 336 TUNABLE_INT("kern.cam.cd.retry_count", &cd_retry_count);
 337 SYSCTL_INT(_kern_cam_cd, OID_AUTO, timeout, CTLFLAG_RW,
 338            &cd_timeout, 0, "Timeout, in us, for read operations");
 339 TUNABLE_INT("kern.cam.cd.timeout", &cd_timeout);
 340 SYSCTL_INT(_kern_cam_cd_changer, OID_AUTO, min_busy_seconds, CTLFLAG_RW,
 341            &changer_min_busy_seconds, 0, "Minimum changer scheduling quantum");
 342 TUNABLE_INT("kern.cam.cd.changer.min_busy_seconds", &changer_min_busy_seconds);
 343 SYSCTL_INT(_kern_cam_cd_changer, OID_AUTO, max_busy_seconds, CTLFLAG_RW,
 344            &changer_max_busy_seconds, 0, "Maximum changer scheduling quantum");
 345 TUNABLE_INT("kern.cam.cd.changer.max_busy_seconds", &changer_max_busy_seconds);
 346
 347 struct cdchanger {
 348         path_id_t                        path_id;
 349         target_id_t                      target_id;
 350         int                              num_devices;
 351         struct camq                      devq;
 352         struct timeval                   start_time;
 353         struct cd_softc                  *cur_device;
 354         struct callout                   short_handle;
 355         struct callout                   long_handle;
 356         volatile cd_changer_flags        flags;
 357         STAILQ_ENTRY(cdchanger)          changer_links;
 358         STAILQ_HEAD(chdevlist, cd_softc) chluns;
 359 };
 360
 361 static struct mtx changerq_mtx;
 362 static STAILQ_HEAD(changerlist, cdchanger) changerq;
 363 static int num_changers;
 364
 365 static MALLOC_DEFINE(M_SCSICD, "scsi_cd", "scsi_cd buffers");
 366
 367 static void
 368 cdinit(void)
 369 {
 370         cam_status status;
 371
 372         mtx_init(&changerq_mtx, "cdchangerq", "SCSI CD Changer List", MTX_DEF);
 373         STAILQ_INIT(&changerq);
 374
 375         /*
 376          * Install a global async callback.  This callback will
 377          * receive async callbacks like "new device found".
 378          */
 379         status = xpt_register_async(AC_FOUND_DEVICE, cdasync, NULL, NULL);
 380
 381         if (status != CAM_REQ_CMP) {
 382                 printf("cd: Failed to attach master async callback "
 383                        "due to status 0x%x!\n", status);
 384         }
 385 }
 386
 387 /*
 388  * Callback from GEOM, called when it has finished cleaning up its
 389  * resources.
 390  */
 391 static void
 392 cddiskgonecb(struct disk *dp)
 393 {
 394         struct cam_periph *periph;
 395
 396         periph = (struct cam_periph *)dp->d_drv1;
 397         cam_periph_release(periph);
 398 }
 399
 400 static void
 401 cdoninvalidate(struct cam_periph *periph)
 402 {
 403         struct cd_softc *softc;
 404
 405         softc = (struct cd_softc *)periph->softc;
 406
 407         /*
 408          * De-register any async callbacks.
 409          */
 410         xpt_register_async(0, cdasync, periph, periph->path);
 411
 412         softc->flags |= CD_FLAG_INVALID;
 413
 414         /*
 415          * Return all queued I/O with ENXIO.
 416          * XXX Handle any transactions queued to the card
 417          *     with XPT_ABORT_CCB.
 418          */
 419         bioq_flush(&softc->bio_queue, NULL, ENXIO);
 420
 421         /*
 422          * If this device is part of a changer, and it was scheduled
 423          * to run, remove it from the run queue since we just nuked
 424          * all of its scheduled I/O.
 425          */
 426         if ((softc->flags & CD_FLAG_CHANGER)
 427          && (softc->pinfo.index != CAM_UNQUEUED_INDEX))
 428                 camq_remove(&softc->changer->devq, softc->pinfo.index);
 429
 430         disk_gone(softc->disk);
 431         xpt_print(periph->path, "lost device, %d refs\n", periph->refcount);
 432 }
 433
 434 static void
 435 cdcleanup(struct cam_periph *periph)
 436 {
 437         struct cd_softc *softc;
 438
 439         softc = (struct cd_softc *)periph->softc;
 440
 441         xpt_print(periph->path, "removing device entry\n");
 442
 443         /*
 444          * In the queued, non-active case, the device in question
 445          * has already been removed from the changer run queue.  Since this
 446          * device is active, we need to de-activate it, and schedule
 447          * another device to run.  (if there is another one to run)
 448          */
 449         if ((softc->flags & CD_FLAG_CHANGER)
 450          && (softc->flags & CD_FLAG_ACTIVE)) {
 451
 452                 /*
 453                  * The purpose of the short timeout is soley to determine
 454                  * whether the current device has finished or not.  Well,
 455                  * since we're removing the active device, we know that it
 456                  * is finished.  So, get rid of the short timeout.
 457                  * Otherwise, if we're in the time period before the short
 458                  * timeout fires, and there are no other devices in the
 459                  * queue to run, there won't be any other device put in the
 460                  * active slot.  i.e., when we call cdrunchangerqueue()
 461                  * below, it won't do anything.  Then, when the short
 462                  * timeout fires, it'll look at the "current device", which
 463                  * we are free below, and possibly panic the kernel on a
 464                  * bogus pointer reference.
 465                  *
 466                  * The long timeout doesn't really matter, since we
 467                  * decrement the qfrozen_cnt to indicate that there is
 468                  * nothing in the active slot now.  Therefore, there won't
 469                  * be any bogus pointer references there.
 470                  */
 471                 if (softc->changer->flags & CHANGER_SHORT_TMOUT_SCHED) {
 472                         callout_stop(&softc->changer->short_handle);
 473                         softc->changer->flags &= ~CHANGER_SHORT_TMOUT_SCHED;
 474                 }
 475                 softc->changer->devq.qfrozen_cnt[0]--;
 476                 softc->changer->flags |= CHANGER_MANUAL_CALL;
 477                 cdrunchangerqueue(softc->changer);
 478         }
 479
 480         /*
 481          * If we're removing the last device on the changer, go ahead and
 482          * remove the changer device structure.
 483          */
 484         if ((softc->flags & CD_FLAG_CHANGER)
 485          && (--softc->changer->num_devices == 0)) {
 486
 487                 /*
 488                  * Theoretically, there shouldn't be any timeouts left, but
 489                  * I'm not completely sure that that will be the case.  So,
 490                  * it won't hurt to check and see if there are any left.
 491                  */
 492                 if (softc->changer->flags & CHANGER_TIMEOUT_SCHED) {
 493                         callout_stop(&softc->changer->long_handle);
 494                         softc->changer->flags &= ~CHANGER_TIMEOUT_SCHED;
 495                 }
 496
 497                 if (softc->changer->flags & CHANGER_SHORT_TMOUT_SCHED) {
 498                         callout_stop(&softc->changer->short_handle);
 499                         softc->changer->flags &= ~CHANGER_SHORT_TMOUT_SCHED;
 500                 }
 501
 502                 mtx_lock(&changerq_mtx);
 503                 STAILQ_REMOVE(&changerq, softc->changer, cdchanger,
 504                               changer_links);
 505                 num_changers--;
 506                 mtx_unlock(&changerq_mtx);
 507                 xpt_print(periph->path, "removing changer entry\n");
 508                 free(softc->changer, M_DEVBUF);
 509         }
 510         cam_periph_unlock(periph);
 511         if ((softc->flags & CD_FLAG_SCTX_INIT) != 0
 512             && sysctl_ctx_free(&softc->sysctl_ctx) != 0) {
 513                 xpt_print(periph->path, "can't remove sysctl context\n");
 514         }
 515
 516         callout_drain(&softc->mediapoll_c);
 517         disk_destroy(softc->disk);
 518         free(softc, M_DEVBUF);
 519         cam_periph_lock(periph);
 520 }
 521
 522 static void
 523 cdasync(void *callback_arg, u_int32_t code,
 524         struct cam_path *path, void *arg)
 525 {
 526         struct cam_periph *periph;
 527         struct cd_softc *softc;
 528
 529         periph = (struct cam_periph *)callback_arg;
 530         switch (code) {
 531         case AC_FOUND_DEVICE:
 532         {
 533                 struct ccb_getdev *cgd;
 534                 cam_status status;
 535
 536                 cgd = (struct ccb_getdev *)arg;
 537                 if (cgd == NULL)
 538                         break;
 539
 540                 if (cgd->protocol != PROTO_SCSI)
 541                         break;
 542
 543                 if (SID_TYPE(&cgd->inq_data) != T_CDROM
 544                     && SID_TYPE(&cgd->inq_data) != T_WORM)
 545                         break;
 546
 547                 /*
 548                  * Allocate a peripheral instance for
 549                  * this device and start the probe
 550                  * process.
 551                  */
 552                 status = cam_periph_alloc(cdregister, cdoninvalidate,
 553                                           cdcleanup, cdstart,
 554                                           "cd", CAM_PERIPH_BIO,
 555                                           cgd->ccb_h.path, cdasync,
 556                                           AC_FOUND_DEVICE, cgd);
 557
 558                 if (status != CAM_REQ_CMP
 559                  && status != CAM_REQ_INPROG)
 560                         printf("cdasync: Unable to attach new device "
 561                                "due to status 0x%x\n", status);
 562
 563                 break;
 564         }
 565         case AC_UNIT_ATTENTION:
 566         {
 567                 union ccb *ccb;
 568                 int error_code, sense_key, asc, ascq;
 569
 570                 softc = (struct cd_softc *)periph->softc;
 571                 ccb = (union ccb *)arg;
 572
 573                 /*
 574                  * Handle all media change UNIT ATTENTIONs except
 575                  * our own, as they will be handled by cderror().
 576                  */
 577                 if (xpt_path_periph(ccb->ccb_h.path) != periph &&
 578                     scsi_extract_sense_ccb(ccb,
 579                      &error_code, &sense_key, &asc, &ascq)) {
 580                         if (asc == 0x28 && ascq == 0x00)
 581                                 disk_media_changed(softc->disk, M_NOWAIT);
 582                 }
 583                 cam_periph_async(periph, code, path, arg);
 584                 break;
 585         }
 586         case AC_SCSI_AEN:
 587                 softc = (struct cd_softc *)periph->softc;
 588                 if (softc->state == CD_STATE_NORMAL && !softc->tur) {
 589                         if (cam_periph_acquire(periph) == CAM_REQ_CMP) {
 590                                 softc->tur = 1;
 591                                 xpt_schedule(periph, CAM_PRIORITY_NORMAL);
 592                         }
 593                 }
 594                 /* FALLTHROUGH */
 595         case AC_SENT_BDR:
 596         case AC_BUS_RESET:
 597         {
 598                 struct ccb_hdr *ccbh;
 599
 600                 softc = (struct cd_softc *)periph->softc;
 601                 /*
 602                  * Don't fail on the expected unit attention
 603                  * that will occur.
 604                  */
 605                 softc->flags |= CD_FLAG_RETRY_UA;
 606                 LIST_FOREACH(ccbh, &softc->pending_ccbs, periph_links.le)
 607                         ccbh->ccb_state |= CD_CCB_RETRY_UA;
 608                 /* FALLTHROUGH */
 609         }
 610         default:
 611                 cam_periph_async(periph, code, path, arg);
 612                 break;
 613         }
 614 }
 615
 616 static void
 617 cdsysctlinit(void *context, int pending)
 618 {
 619         struct cam_periph *periph;
 620         struct cd_softc *softc;
 621         char tmpstr[80], tmpstr2[80];
 622
 623         periph = (struct cam_periph *)context;
 624         if (cam_periph_acquire(periph) != CAM_REQ_CMP)
 625                 return;
 626
 627         softc = (struct cd_softc *)periph->softc;
 628         snprintf(tmpstr, sizeof(tmpstr), "CAM CD unit %d", periph->unit_number);
 629         snprintf(tmpstr2, sizeof(tmpstr2), "%d", periph->unit_number);
 630
 631         sysctl_ctx_init(&softc->sysctl_ctx);
 632         softc->flags |= CD_FLAG_SCTX_INIT;
 633         softc->sysctl_tree = SYSCTL_ADD_NODE(&softc->sysctl_ctx,
 634                 SYSCTL_STATIC_CHILDREN(_kern_cam_cd), OID_AUTO,
 635                 tmpstr2, CTLFLAG_RD, 0, tmpstr);
 636
 637         if (softc->sysctl_tree == NULL) {
 638                 printf("cdsysctlinit: unable to allocate sysctl tree\n");
 639                 cam_periph_release(periph);
 640                 return;
 641         }
 642
 643         /*
 644          * Now register the sysctl handler, so the user can the value on
 645          * the fly.
 646          */
 647         SYSCTL_ADD_PROC(&softc->sysctl_ctx,SYSCTL_CHILDREN(softc->sysctl_tree),
 648                 OID_AUTO, "minimum_cmd_size", CTLTYPE_INT | CTLFLAG_RW,
 649                 &softc->minimum_command_size, 0, cdcmdsizesysctl, "I",
 650                 "Minimum CDB size");
 651
 652         cam_periph_release(periph);
 653 }
 654
 655 /*
 656  * We have a handler function for this so we can check the values when the
 657  * user sets them, instead of every time we look at them.
 658  */
 659 static int
 660 cdcmdsizesysctl(SYSCTL_HANDLER_ARGS)
 661 {
 662         int error, value;
 663
 664         value = *(int *)arg1;
 665
 666         error = sysctl_handle_int(oidp, &value, 0, req);
 667
 668         if ((error != 0)
 669          || (req->newptr == NULL))
 670                 return (error);
 671
 672         /*
 673          * The only real values we can have here are 6 or 10.  I don't
 674          * really forsee having 12 be an option at any time in the future.
 675          * So if the user sets something less than or equal to 6, we'll set
 676          * it to 6.  If he sets something greater than 6, we'll set it to 10.
 677          *
 678          * I suppose we could just return an error here for the wrong values,
 679          * but I don't think it's necessary to do so, as long as we can
 680          * determine the user's intent without too much trouble.
 681          */
 682         if (value < 6)
 683                 value = 6;
 684         else if (value > 6)
 685                 value = 10;
 686
 687         *(int *)arg1 = value;
 688
 689         return (0);
 690 }
 691
 692 static cam_status
 693 cdregister(struct cam_periph *periph, void *arg)
 694 {
 695         struct cd_softc *softc;
 696         struct ccb_pathinq cpi;
 697         struct ccb_getdev *cgd;
 698         char tmpstr[80];
 699         caddr_t match;
 700
 701         cgd = (struct ccb_getdev *)arg;
 702         if (cgd == NULL) {
 703                 printf("cdregister: no getdev CCB, can't register device\n");
 704                 return(CAM_REQ_CMP_ERR);
 705         }
 706
 707         softc = (struct cd_softc *)malloc(sizeof(*softc),M_DEVBUF,
 708             M_NOWAIT | M_ZERO);
 709         if (softc == NULL) {
 710                 printf("cdregister: Unable to probe new device. "
 711                        "Unable to allocate softc\n");
 712                 return(CAM_REQ_CMP_ERR);
 713         }
 714
 715         LIST_INIT(&softc->pending_ccbs);
 716         STAILQ_INIT(&softc->mode_queue);
 717         softc->state = CD_STATE_PROBE;
 718         bioq_init(&softc->bio_queue);
 719         if (SID_IS_REMOVABLE(&cgd->inq_data))
 720                 softc->flags |= CD_FLAG_DISC_REMOVABLE;
 721
 722         periph->softc = softc;
 723         softc->periph = periph;
 724
 725         /*
 726          * See if this device has any quirks.
 727          */
 728         match = cam_quirkmatch((caddr_t)&cgd->inq_data,
 729                                (caddr_t)cd_quirk_table,
 730                                sizeof(cd_quirk_table)/sizeof(*cd_quirk_table),
 731                                sizeof(*cd_quirk_table), scsi_inquiry_match);
 732
 733         if (match != NULL)
 734                 softc->quirks = ((struct cd_quirk_entry *)match)->quirks;
 735         else
 736                 softc->quirks = CD_Q_NONE;
 737
 738         /* Check if the SIM does not want 6 byte commands */
 739         bzero(&cpi, sizeof(cpi));
 740         xpt_setup_ccb(&cpi.ccb_h, periph->path, CAM_PRIORITY_NORMAL);
 741         cpi.ccb_h.func_code = XPT_PATH_INQ;
 742         xpt_action((union ccb *)&cpi);
 743         if (cpi.ccb_h.status == CAM_REQ_CMP && (cpi.hba_misc & PIM_NO_6_BYTE))
 744                 softc->quirks |= CD_Q_10_BYTE_ONLY;
 745
 746         TASK_INIT(&softc->sysctl_task, 0, cdsysctlinit, periph);
 747
 748         /* The default is 6 byte commands, unless quirked otherwise */
 749         if (softc->quirks & CD_Q_10_BYTE_ONLY)
 750                 softc->minimum_command_size = 10;
 751         else
 752                 softc->minimum_command_size = 6;
 753
 754         /*
 755          * Refcount and block open attempts until we are setup
 756          * Can't block
 757          */
 758         (void)cam_periph_hold(periph, PRIBIO);
 759         cam_periph_unlock(periph);
 760         /*
 761          * Load the user's default, if any.
 762          */
 763         snprintf(tmpstr, sizeof(tmpstr), "kern.cam.cd.%d.minimum_cmd_size",
 764                  periph->unit_number);
 765         TUNABLE_INT_FETCH(tmpstr, &softc->minimum_command_size);
 766
 767         /* 6 and 10 are the only permissible values here. */
 768         if (softc->minimum_command_size < 6)
 769                 softc->minimum_command_size = 6;
 770         else if (softc->minimum_command_size > 6)
 771                 softc->minimum_command_size = 10;
 772
 773         /*
 774          * We need to register the statistics structure for this device,
 775          * but we don't have the blocksize yet for it.  So, we register
 776          * the structure and indicate that we don't have the blocksize
 777          * yet.  Unlike other SCSI peripheral drivers, we explicitly set
 778          * the device type here to be CDROM, rather than just ORing in
 779          * the device type.  This is because this driver can attach to either
 780          * CDROM or WORM devices, and we want this peripheral driver to
 781          * show up in the devstat list as a CD peripheral driver, not a
 782          * WORM peripheral driver.  WORM drives will also have the WORM
 783          * driver attached to them.
 784          */
 785         softc->disk = disk_alloc();
 786         softc->disk->d_devstat = devstat_new_entry("cd",
 787                           periph->unit_number, 0,
 788                           DEVSTAT_BS_UNAVAILABLE,
 789                           DEVSTAT_TYPE_CDROM |
 790                           XPORT_DEVSTAT_TYPE(cpi.transport),
 791                           DEVSTAT_PRIORITY_CD);
 792         softc->disk->d_open = cdopen;
 793         softc->disk->d_close = cdclose;
 794         softc->disk->d_strategy = cdstrategy;
 795         softc->disk->d_gone = cddiskgonecb;
 796         softc->disk->d_ioctl = cdioctl;
 797         softc->disk->d_name = "cd";
 798         cam_strvis(softc->disk->d_descr, cgd->inq_data.vendor,
 799             sizeof(cgd->inq_data.vendor), sizeof(softc->disk->d_descr));
 800         strlcat(softc->disk->d_descr, " ", sizeof(softc->disk->d_descr));
 801         cam_strvis(&softc->disk->d_descr[strlen(softc->disk->d_descr)],
 802             cgd->inq_data.product, sizeof(cgd->inq_data.product),
 803             sizeof(softc->disk->d_descr) - strlen(softc->disk->d_descr));
 804         softc->disk->d_unit = periph->unit_number;
 805         softc->disk->d_drv1 = periph;
 806         if (cpi.maxio == 0)
 807                 softc->disk->d_maxsize = DFLTPHYS;      /* traditional default */
 808         else if (cpi.maxio > MAXPHYS)
 809                 softc->disk->d_maxsize = MAXPHYS;       /* for safety */
 810         else
 811                 softc->disk->d_maxsize = cpi.maxio;
 812         softc->disk->d_flags = 0;
 813         softc->disk->d_hba_vendor = cpi.hba_vendor;
 814         softc->disk->d_hba_device = cpi.hba_device;
 815         softc->disk->d_hba_subvendor = cpi.hba_subvendor;
 816         softc->disk->d_hba_subdevice = cpi.hba_subdevice;
 817
 818         /*
 819          * Acquire a reference to the periph before we register with GEOM.
 820          * We'll release this reference once GEOM calls us back (via
 821          * dadiskgonecb()) telling us that our provider has been freed.
 822          */
 823         if (cam_periph_acquire(periph) != CAM_REQ_CMP) {
 824                 xpt_print(periph->path, "%s: lost periph during "
 825                           "registration!\n", __func__);
 826                 cam_periph_lock(periph);
 827                 return (CAM_REQ_CMP_ERR);
 828         }
 829
 830         disk_create(softc->disk, DISK_VERSION);
 831         cam_periph_lock(periph);
 832
 833         /*
 834          * Add an async callback so that we get
 835          * notified if this device goes away.
 836          */
 837         xpt_register_async(AC_SENT_BDR | AC_BUS_RESET | AC_LOST_DEVICE |
 838             AC_SCSI_AEN | AC_UNIT_ATTENTION, cdasync, periph, periph->path);
 839
 840         /*
 841          * If the target lun is greater than 0, we most likely have a CD
 842          * changer device.  Check the quirk entries as well, though, just
 843          * in case someone has a CD tower with one lun per drive or
 844          * something like that.  Also, if we know up front that a
 845          * particular device is a changer, we can mark it as such starting
 846          * with lun 0, instead of lun 1.  It shouldn't be necessary to have
 847          * a quirk entry to define something as a changer, however.
 848          */
 849         if (((cgd->ccb_h.target_lun > 0)
 850           && ((softc->quirks & CD_Q_NO_CHANGER) == 0))
 851          || ((softc->quirks & CD_Q_CHANGER) != 0)) {
 852                 struct cdchanger *nchanger;
 853                 struct cam_periph *nperiph;
 854                 struct cam_path *path;
 855                 cam_status status;
 856                 int found;
 857
 858                 /* Set the changer flag in the current device's softc */
 859                 softc->flags |= CD_FLAG_CHANGER;
 860
 861                 /*
 862                  * Now, look around for an existing changer device with the
 863                  * same path and target ID as the current device.
 864                  */
 865                 mtx_lock(&changerq_mtx);
 866                 for (found = 0,
 867                      nchanger = (struct cdchanger *)STAILQ_FIRST(&changerq);
 868                      nchanger != NULL;
 869                      nchanger = STAILQ_NEXT(nchanger, changer_links)){
 870                         if ((nchanger->path_id == cgd->ccb_h.path_id)
 871                          && (nchanger->target_id == cgd->ccb_h.target_id)) {
 872                                 found = 1;
 873                                 break;
 874                         }
 875                 }
 876                 mtx_unlock(&changerq_mtx);
 877
 878                 /*
 879                  * If we found a matching entry, just add this device to
 880                  * the list of devices on this changer.
 881                  */
 882                 if (found == 1) {
 883                         struct chdevlist *chlunhead;
 884
 885                         chlunhead = &nchanger->chluns;
 886
 887                         /*
 888                          * XXX KDM look at consolidating this code with the
 889                          * code below in a separate function.
 890                          */
 891
 892                         /*
 893                          * Create a path with lun id 0, and see if we can
 894                          * find a matching device
 895                          */
 896                         status = xpt_create_path(&path, /*periph*/ periph,
 897                                                  cgd->ccb_h.path_id,
 898                                                  cgd->ccb_h.target_id, 0);
 899
 900                         if ((status == CAM_REQ_CMP)
 901                          && ((nperiph = cam_periph_find(path, "cd")) != NULL)){
 902                                 struct cd_softc *nsoftc;
 903
 904                                 nsoftc = (struct cd_softc *)nperiph->softc;
 905
 906                                 if ((nsoftc->flags & CD_FLAG_CHANGER) == 0){
 907                                         nsoftc->flags |= CD_FLAG_CHANGER;
 908                                         nchanger->num_devices++;
 909                                         if (camq_resize(&nchanger->devq,
 910                                            nchanger->num_devices)!=CAM_REQ_CMP){
 911                                                 printf("cdregister: "
 912                                                        "camq_resize "
 913                                                        "failed, changer "
 914                                                        "support may "
 915                                                        "be messed up\n");
 916                                         }
 917                                         nsoftc->changer = nchanger;
 918                                         nsoftc->pinfo.index =CAM_UNQUEUED_INDEX;
 919
 920                                         STAILQ_INSERT_TAIL(&nchanger->chluns,
 921                                                           nsoftc,changer_links);
 922                                 }
 923                                 xpt_free_path(path);
 924                         } else if (status == CAM_REQ_CMP)
 925                                 xpt_free_path(path);
 926                         else {
 927                                 printf("cdregister: unable to allocate path\n"
 928                                        "cdregister: changer support may be "
 929                                        "broken\n");
 930                         }
 931
 932                         nchanger->num_devices++;
 933
 934                         softc->changer = nchanger;
 935                         softc->pinfo.index = CAM_UNQUEUED_INDEX;
 936
 937                         if (camq_resize(&nchanger->devq,
 938                             nchanger->num_devices) != CAM_REQ_CMP) {
 939                                 printf("cdregister: camq_resize "
 940                                        "failed, changer support may "
 941                                        "be messed up\n");
 942                         }
 943
 944                         STAILQ_INSERT_TAIL(chlunhead, softc, changer_links);
 945                 }
 946                 /*
 947                  * In this case, we don't already have an entry for this
 948                  * particular changer, so we need to create one, add it to
 949                  * the queue, and queue this device on the list for this
 950                  * changer.  Before we queue this device, however, we need
 951                  * to search for lun id 0 on this target, and add it to the
 952                  * queue first, if it exists.  (and if it hasn't already
 953                  * been marked as part of the changer.)
 954                  */
 955                 else {
 956                         nchanger = malloc(sizeof(struct cdchanger),
 957                                 M_DEVBUF, M_NOWAIT | M_ZERO);
 958                         if (nchanger == NULL) {
 959                                 softc->flags &= ~CD_FLAG_CHANGER;
 960                                 printf("cdregister: unable to malloc "
 961                                        "changer structure\ncdregister: "
 962                                        "changer support disabled\n");
 963
 964                                 /*
 965                                  * Yes, gotos can be gross but in this case
 966                                  * I think it's justified..
 967                                  */
 968                                 goto cdregisterexit;
 969                         }
 970                         if (camq_init(&nchanger->devq, 1) != 0) {
 971                                 softc->flags &= ~CD_FLAG_CHANGER;
 972                                 printf("cdregister: changer support "
 973                                        "disabled\n");
 974                                 goto cdregisterexit;
 975                         }
 976
 977                         nchanger->path_id = cgd->ccb_h.path_id;
 978                         nchanger->target_id = cgd->ccb_h.target_id;
 979
 980                         /* this is superfluous, but it makes things clearer */
 981                         nchanger->num_devices = 0;
 982
 983                         STAILQ_INIT(&nchanger->chluns);
 984
 985                         callout_init_mtx(&nchanger->long_handle,
 986                             periph->sim->mtx, 0);
 987                         callout_init_mtx(&nchanger->short_handle,
 988                             periph->sim->mtx, 0);
 989
 990                         mtx_lock(&changerq_mtx);
 991                         num_changers++;
 992                         STAILQ_INSERT_TAIL(&changerq, nchanger,
 993                                            changer_links);
 994                         mtx_unlock(&changerq_mtx);
 995
 996                         /*
 997                          * Create a path with lun id 0, and see if we can
 998                          * find a matching device
 999                          */
1000                         status = xpt_create_path(&path, /*periph*/ periph,
1001                                                  cgd->ccb_h.path_id,
1002                                                  cgd->ccb_h.target_id, 0);
1003
1004                         /*
1005                          * If we were able to allocate the path, and if we
1006                          * find a matching device and it isn't already
1007                          * marked as part of a changer, then we add it to
1008                          * the current changer.
1009                          */
1010                         if ((status == CAM_REQ_CMP)
1011                          && ((nperiph = cam_periph_find(path, "cd")) != NULL)
1012                          && ((((struct cd_softc *)periph->softc)->flags &
1013                                CD_FLAG_CHANGER) == 0)) {
1014                                 struct cd_softc *nsoftc;
1015
1016                                 nsoftc = (struct cd_softc *)nperiph->softc;
1017
1018                                 nsoftc->flags |= CD_FLAG_CHANGER;
1019                                 nchanger->num_devices++;
1020                                 if (camq_resize(&nchanger->devq,
1021                                     nchanger->num_devices) != CAM_REQ_CMP) {
1022                                         printf("cdregister: camq_resize "
1023                                                "failed, changer support may "
1024                                                "be messed up\n");
1025                                 }
1026                                 nsoftc->changer = nchanger;
1027                                 nsoftc->pinfo.index = CAM_UNQUEUED_INDEX;
1028
1029                                 STAILQ_INSERT_TAIL(&nchanger->chluns,
1030                                                    nsoftc, changer_links);
1031                                 xpt_free_path(path);
1032                         } else if (status == CAM_REQ_CMP)
1033                                 xpt_free_path(path);
1034                         else {
1035                                 printf("cdregister: unable to allocate path\n"
1036                                        "cdregister: changer support may be "
1037                                        "broken\n");
1038                         }
1039
1040                         softc->changer = nchanger;
1041                         softc->pinfo.index = CAM_UNQUEUED_INDEX;
1042                         nchanger->num_devices++;
1043                         if (camq_resize(&nchanger->devq,
1044                             nchanger->num_devices) != CAM_REQ_CMP) {
1045                                 printf("cdregister: camq_resize "
1046                                        "failed, changer support may "
1047                                        "be messed up\n");
1048                         }
1049                         STAILQ_INSERT_TAIL(&nchanger->chluns, softc,
1050                                            changer_links);
1051                 }
1052         }
1053
1054         /*
1055          * Schedule a periodic media polling events.
1056          */
1057         callout_init_mtx(&softc->mediapoll_c, periph->sim->mtx, 0);
1058         if ((softc->flags & CD_FLAG_DISC_REMOVABLE) &&
1059             (softc->flags & CD_FLAG_CHANGER) == 0 &&
1060             (cgd->inq_flags & SID_AEN) == 0 &&
1061             cd_poll_period != 0)
1062                 callout_reset(&softc->mediapoll_c, cd_poll_period * hz,
1063                     cdmediapoll, periph);
1064
1065 cdregisterexit:
1066
1067         if ((softc->flags & CD_FLAG_CHANGER) == 0)
1068                 xpt_schedule(periph, CAM_PRIORITY_DEV);
1069         else
1070                 cdschedule(periph, CAM_PRIORITY_DEV);
1071
1072         return(CAM_REQ_CMP);
1073 }
1074
1075 static int
1076 cdopen(struct disk *dp)
1077 {
1078         struct cam_periph *periph;
1079         struct cd_softc *softc;
1080         int error;
1081
1082         periph = (struct cam_periph *)dp->d_drv1;
1083         softc = (struct cd_softc *)periph->softc;
1084
1085         if (cam_periph_acquire(periph) != CAM_REQ_CMP)
1086                 return(ENXIO);
1087
1088         cam_periph_lock(periph);
1089
1090         if (softc->flags & CD_FLAG_INVALID) {
1091                 cam_periph_release_locked(periph);
1092                 cam_periph_unlock(periph);
1093                 return(ENXIO);
1094         }
1095
1096         if ((error = cam_periph_hold(periph, PRIBIO | PCATCH)) != 0) {
1097                 cam_periph_release_locked(periph);
1098                 cam_periph_unlock(periph);
1099                 return (error);
1100         }
1101
1102         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE | CAM_DEBUG_PERIPH,
1103             ("cdopen\n"));
1104
1105         /*
1106          * Check for media, and set the appropriate flags.  We don't bail
1107          * if we don't have media, but then we don't allow anything but the
1108          * CDIOCEJECT/CDIOCCLOSE ioctls if there is no media.
1109          */
1110         cdcheckmedia(periph);
1111
1112         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("leaving cdopen\n"));
1113         cam_periph_unhold(periph);
1114
1115         cam_periph_unlock(periph);
1116
1117         return (0);
1118 }
1119
1120 static int
1121 cdclose(struct disk *dp)
1122 {
1123         struct  cam_periph *periph;
1124         struct  cd_softc *softc;
1125
1126         periph = (struct cam_periph *)dp->d_drv1;
1127         softc = (struct cd_softc *)periph->softc;
1128
1129         cam_periph_lock(periph);
1130         if (cam_periph_hold(periph, PRIBIO) != 0) {
1131                 cam_periph_unlock(periph);
1132                 cam_periph_release(periph);
1133                 return (0);
1134         }
1135
1136         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE | CAM_DEBUG_PERIPH,
1137             ("cdclose\n"));
1138
1139         if ((softc->flags & CD_FLAG_DISC_REMOVABLE) != 0)
1140                 cdprevent(periph, PR_ALLOW);
1141
1142         /*
1143          * Since we're closing this CD, mark the blocksize as unavailable.
1144          * It will be marked as available when the CD is opened again.
1145          */
1146         softc->disk->d_devstat->flags |= DEVSTAT_BS_UNAVAILABLE;
1147
1148         /*
1149          * We'll check the media and toc again at the next open().
1150          */
1151         softc->flags &= ~(CD_FLAG_VALID_MEDIA|CD_FLAG_VALID_TOC);
1152
1153         cam_periph_unhold(periph);
1154         cam_periph_release_locked(periph);
1155         cam_periph_unlock(periph);
1156
1157         return (0);
1158 }
1159
1160 static void
1161 cdshorttimeout(void *arg)
1162 {
1163         struct cdchanger *changer;
1164
1165         changer = (struct cdchanger *)arg;
1166
1167         /* Always clear the short timeout flag, since that's what we're in */
1168         changer->flags &= ~CHANGER_SHORT_TMOUT_SCHED;
1169
1170         /*
1171          * Check to see if there is any more pending or outstanding I/O for
1172          * this device.  If not, move it out of the active slot.
1173          */
1174         if ((bioq_first(&changer->cur_device->bio_queue) == NULL)
1175          && (changer->cur_device->outstanding_cmds == 0)) {
1176                 changer->flags |= CHANGER_MANUAL_CALL;
1177                 cdrunchangerqueue(changer);
1178         }
1179 }
1180
1181 /*
1182  * This is a wrapper for xpt_schedule.  It only applies to changers.
1183  */
1184 static void
1185 cdschedule(struct cam_periph *periph, int priority)
1186 {
1187         struct cd_softc *softc;
1188
1189         softc = (struct cd_softc *)periph->softc;
1190
1191         /*
1192          * If this device isn't currently queued, and if it isn't
1193          * the active device, then we queue this device and run the
1194          * changer queue if there is no timeout scheduled to do it.
1195          * If this device is the active device, just schedule it
1196          * to run again.  If this device is queued, there should be
1197          * a timeout in place already that will make sure it runs.
1198          */
1199         if ((softc->pinfo.index == CAM_UNQUEUED_INDEX)
1200          && ((softc->flags & CD_FLAG_ACTIVE) == 0)) {
1201                 /*
1202                  * We don't do anything with the priority here.
1203                  * This is strictly a fifo queue.
1204                  */
1205                 softc->pinfo.priority = CAM_PRIORITY_NORMAL;
1206                 softc->pinfo.generation = ++softc->changer->devq.generation;
1207                 camq_insert(&softc->changer->devq, (cam_pinfo *)softc);
1208
1209                 /*
1210                  * Since we just put a device in the changer queue,
1211                  * check and see if there is a timeout scheduled for
1212                  * this changer.  If so, let the timeout handle
1213                  * switching this device into the active slot.  If
1214                  * not, manually call the timeout routine to
1215                  * bootstrap things.
1216                  */
1217                 if (((softc->changer->flags & CHANGER_TIMEOUT_SCHED)==0)
1218                  && ((softc->changer->flags & CHANGER_NEED_TIMEOUT)==0)
1219                  && ((softc->changer->flags & CHANGER_SHORT_TMOUT_SCHED)==0)){
1220                         softc->changer->flags |= CHANGER_MANUAL_CALL;
1221                         cdrunchangerqueue(softc->changer);
1222                 }
1223         } else if ((softc->flags & CD_FLAG_ACTIVE)
1224                 && ((softc->flags & CD_FLAG_SCHED_ON_COMP) == 0))
1225                 xpt_schedule(periph, priority);
1226 }
1227
1228 static void
1229 cdrunchangerqueue(void *arg)
1230 {
1231         struct cd_softc *softc;
1232         struct cdchanger *changer;
1233         int called_from_timeout;
1234
1235         changer = (struct cdchanger *)arg;
1236
1237         /*
1238          * If we have NOT been called from cdstrategy() or cddone(), and
1239          * instead from a timeout routine, go ahead and clear the
1240          * timeout flag.
1241          */
1242         if ((changer->flags & CHANGER_MANUAL_CALL) == 0) {
1243                 changer->flags &= ~CHANGER_TIMEOUT_SCHED;
1244                 called_from_timeout = 1;
1245         } else
1246                 called_from_timeout = 0;
1247
1248         /* Always clear the manual call flag */
1249         changer->flags &= ~CHANGER_MANUAL_CALL;
1250
1251         /* nothing to do if the queue is empty */
1252         if (changer->devq.entries <= 0) {
1253                 return;
1254         }
1255
1256         /*
1257          * If the changer queue is frozen, that means we have an active
1258          * device.
1259          */
1260         if (changer->devq.qfrozen_cnt[0] > 0) {
1261
1262                 /*
1263                  * We always need to reset the frozen count and clear the
1264                  * active flag.
1265                  */
1266                 changer->devq.qfrozen_cnt[0]--;
1267                 changer->cur_device->flags &= ~CD_FLAG_ACTIVE;
1268                 changer->cur_device->flags &= ~CD_FLAG_SCHED_ON_COMP;
1269
1270                 if (changer->cur_device->outstanding_cmds > 0) {
1271                         changer->cur_device->flags |= CD_FLAG_SCHED_ON_COMP;
1272                         changer->cur_device->bufs_left =
1273                                 changer->cur_device->outstanding_cmds;
1274                         if (called_from_timeout) {
1275                                 callout_reset(&changer->long_handle,
1276                                     changer_max_busy_seconds * hz,
1277                                     cdrunchangerqueue, changer);
1278                                 changer->flags |= CHANGER_TIMEOUT_SCHED;
1279                         }
1280                         return;
1281                 }
1282
1283                 /*
1284                  * Check to see whether the current device has any I/O left
1285                  * to do.  If so, requeue it at the end of the queue.  If
1286                  * not, there is no need to requeue it.
1287                  */
1288                 if (bioq_first(&changer->cur_device->bio_queue) != NULL) {
1289
1290                         changer->cur_device->pinfo.generation =
1291                                 ++changer->devq.generation;
1292                         camq_insert(&changer->devq,
1293                                 (cam_pinfo *)changer->cur_device);
1294                 }
1295         }
1296
1297         softc = (struct cd_softc *)camq_remove(&changer->devq, CAMQ_HEAD);
1298
1299         changer->cur_device = softc;
1300
1301         changer->devq.qfrozen_cnt[0]++;
1302         softc->flags |= CD_FLAG_ACTIVE;
1303
1304         /* Just in case this device is waiting */
1305         wakeup(&softc->changer);
1306         xpt_schedule(softc->periph, CAM_PRIORITY_NORMAL);
1307
1308         /*
1309          * Get rid of any pending timeouts, and set a flag to schedule new
1310          * ones so this device gets its full time quantum.
1311          */
1312         if (changer->flags & CHANGER_TIMEOUT_SCHED) {
1313                 callout_stop(&changer->long_handle);
1314                 changer->flags &= ~CHANGER_TIMEOUT_SCHED;
1315         }
1316
1317         if (changer->flags & CHANGER_SHORT_TMOUT_SCHED) {
1318                 callout_stop(&changer->short_handle);
1319                 changer->flags &= ~CHANGER_SHORT_TMOUT_SCHED;
1320         }
1321
1322         /*
1323          * We need to schedule timeouts, but we only do this after the
1324          * first transaction has completed.  This eliminates the changer
1325          * switch time.
1326          */
1327         changer->flags |= CHANGER_NEED_TIMEOUT;
1328 }
1329
1330 static void
1331 cdchangerschedule(struct cd_softc *softc)
1332 {
1333         struct cdchanger *changer;
1334
1335         changer = softc->changer;
1336
1337         /*
1338          * If this is a changer, and this is the current device,
1339          * and this device has at least the minimum time quantum to
1340          * run, see if we can switch it out.
1341          */
1342         if ((softc->flags & CD_FLAG_ACTIVE)
1343          && ((changer->flags & CHANGER_SHORT_TMOUT_SCHED) == 0)
1344          && ((changer->flags & CHANGER_NEED_TIMEOUT) == 0)) {
1345                 /*
1346                  * We try three things here.  The first is that we
1347                  * check to see whether the schedule on completion
1348                  * flag is set.  If it is, we decrement the number
1349                  * of buffers left, and if it's zero, we reschedule.
1350                  * Next, we check to see whether the pending buffer
1351                  * queue is empty and whether there are no
1352                  * outstanding transactions.  If so, we reschedule.
1353                  * Next, we see if the pending buffer queue is empty.
1354                  * If it is, we set the number of buffers left to
1355                  * the current active buffer count and set the
1356                  * schedule on complete flag.
1357                  */
1358                 if (softc->flags & CD_FLAG_SCHED_ON_COMP) {
1359                         if (--softc->bufs_left == 0) {
1360                                 softc->changer->flags |=
1361                                         CHANGER_MANUAL_CALL;
1362                                 softc->flags &= ~CD_FLAG_SCHED_ON_COMP;
1363                                 cdrunchangerqueue(softc->changer);
1364                         }
1365                 } else if ((bioq_first(&softc->bio_queue) == NULL)
1366                         && (softc->outstanding_cmds == 0)) {
1367                         softc->changer->flags |= CHANGER_MANUAL_CALL;
1368                         cdrunchangerqueue(softc->changer);
1369                 }
1370         } else if ((softc->changer->flags & CHANGER_NEED_TIMEOUT)
1371                 && (softc->flags & CD_FLAG_ACTIVE)) {
1372
1373                 /*
1374                  * Now that the first transaction to this
1375                  * particular device has completed, we can go ahead
1376                  * and schedule our timeouts.
1377                  */
1378                 if ((changer->flags & CHANGER_TIMEOUT_SCHED) == 0) {
1379                         callout_reset(&changer->long_handle,
1380                             changer_max_busy_seconds * hz,
1381                             cdrunchangerqueue, changer);
1382                         changer->flags |= CHANGER_TIMEOUT_SCHED;
1383                 } else
1384                         printf("cdchangerschedule: already have a long"
1385                                " timeout!\n");
1386
1387                 if ((changer->flags & CHANGER_SHORT_TMOUT_SCHED) == 0) {
1388                         callout_reset(&changer->short_handle,
1389                             changer_min_busy_seconds * hz,
1390                             cdshorttimeout, changer);
1391                         changer->flags |= CHANGER_SHORT_TMOUT_SCHED;
1392                 } else
1393                         printf("cdchangerschedule: already have a short "
1394                                "timeout!\n");
1395
1396                 /*
1397                  * We just scheduled timeouts, no need to schedule
1398                  * more.
1399                  */
1400                 changer->flags &= ~CHANGER_NEED_TIMEOUT;
1401
1402         }
1403 }
1404
1405 static int
1406 cdrunccb(union ccb *ccb, int (*error_routine)(union ccb *ccb,
1407                                               u_int32_t cam_flags,
1408                                               u_int32_t sense_flags),
1409          u_int32_t cam_flags, u_int32_t sense_flags)
1410 {
1411         struct cd_softc *softc;
1412         struct cam_periph *periph;
1413         int error;
1414
1415         periph = xpt_path_periph(ccb->ccb_h.path);
1416         softc = (struct cd_softc *)periph->softc;
1417
1418         error = cam_periph_runccb(ccb, error_routine, cam_flags, sense_flags,
1419                                   softc->disk->d_devstat);
1420
1421         if (softc->flags & CD_FLAG_CHANGER)
1422                 cdchangerschedule(softc);
1423
1424         return(error);
1425 }
1426
1427 static union ccb *
1428 cdgetccb(struct cam_periph *periph, u_int32_t priority)
1429 {
1430         struct cd_softc *softc;
1431
1432         softc = (struct cd_softc *)periph->softc;
1433
1434         if (softc->flags & CD_FLAG_CHANGER) {
1435                 /*
1436                  * This should work the first time this device is woken up,
1437                  * but just in case it doesn't, we use a while loop.
1438                  */
1439                 while ((softc->flags & CD_FLAG_ACTIVE) == 0) {
1440                         /*
1441                          * If this changer isn't already queued, queue it up.
1442                          */
1443                         if (softc->pinfo.index == CAM_UNQUEUED_INDEX) {
1444                                 softc->pinfo.priority = CAM_PRIORITY_NORMAL;
1445                                 softc->pinfo.generation =
1446                                         ++softc->changer->devq.generation;
1447                                 camq_insert(&softc->changer->devq,
1448                                             (cam_pinfo *)softc);
1449                         }
1450                         if (((softc->changer->flags & CHANGER_TIMEOUT_SCHED)==0)
1451                          && ((softc->changer->flags & CHANGER_NEED_TIMEOUT)==0)
1452                          && ((softc->changer->flags
1453                               & CHANGER_SHORT_TMOUT_SCHED)==0)) {
1454                                 softc->changer->flags |= CHANGER_MANUAL_CALL;
1455                                 cdrunchangerqueue(softc->changer);
1456                         } else
1457                                 cam_periph_sleep(periph, &softc->changer,
1458                                     PRIBIO, "cgticb", 0);
1459                 }
1460         }
1461         return(cam_periph_getccb(periph, priority));
1462 }
1463
1464
1465 /*
1466  * Actually translate the requested transfer into one the physical driver
1467  * can understand.  The transfer is described by a buf and will include
1468  * only one physical transfer.
1469  */
1470 static void
1471 cdstrategy(struct bio *bp)
1472 {
1473         struct cam_periph *periph;
1474         struct cd_softc *softc;
1475
1476         periph = (struct cam_periph *)bp->bio_disk->d_drv1;
1477         cam_periph_lock(periph);
1478         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE,
1479             ("cdstrategy(%p)\n", bp));
1480
1481         softc = (struct cd_softc *)periph->softc;
1482
1483         /*
1484          * If the device has been made invalid, error out
1485          */
1486         if ((softc->flags & CD_FLAG_INVALID)) {
1487                 cam_periph_unlock(periph);
1488                 biofinish(bp, NULL, ENXIO);
1489                 return;
1490         }
1491
1492         /*
1493          * If we don't have valid media, look for it before trying to
1494          * schedule the I/O.
1495          */
1496         if ((softc->flags & CD_FLAG_VALID_MEDIA) == 0) {
1497                 int error;
1498
1499                 error = cdcheckmedia(periph);
1500                 if (error != 0) {
1501                         cam_periph_unlock(periph);
1502                         biofinish(bp, NULL, error);
1503                         return;
1504                 }
1505         }
1506
1507         /*
1508          * Place it in the queue of disk activities for this disk
1509          */
1510         bioq_disksort(&softc->bio_queue, bp);
1511
1512         /*
1513          * Schedule ourselves for performing the work.  We do things
1514          * differently for changers.
1515          */
1516         if ((softc->flags & CD_FLAG_CHANGER) == 0)
1517                 xpt_schedule(periph, CAM_PRIORITY_NORMAL);
1518         else
1519                 cdschedule(periph, CAM_PRIORITY_NORMAL);
1520
1521         cam_periph_unlock(periph);
1522         return;
1523 }
1524
1525 static void
1526 cdstart(struct cam_periph *periph, union ccb *start_ccb)
1527 {
1528         struct cd_softc *softc;
1529         struct bio *bp;
1530         struct ccb_scsiio *csio;
1531         struct scsi_read_capacity_data *rcap;
1532
1533         softc = (struct cd_softc *)periph->softc;
1534
1535         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("entering cdstart\n"));
1536
1537         switch (softc->state) {
1538         case CD_STATE_NORMAL:
1539         {
1540                 bp = bioq_first(&softc->bio_queue);
1541                 if (periph->immediate_priority <= periph->pinfo.priority) {
1542                         start_ccb->ccb_h.ccb_state = CD_CCB_WAITING;
1543
1544                         SLIST_INSERT_HEAD(&periph->ccb_list, &start_ccb->ccb_h,
1545                                           periph_links.sle);
1546                         periph->immediate_priority = CAM_PRIORITY_NONE;
1547                         wakeup(&periph->ccb_list);
1548                 } else if (bp == NULL) {
1549                         if (softc->tur) {
1550                                 softc->tur = 0;
1551                                 csio = &start_ccb->csio;
1552                                 scsi_test_unit_ready(csio,
1553                                      /*retries*/ cd_retry_count,
1554                                      cddone,
1555                                      MSG_SIMPLE_Q_TAG,
1556                                      SSD_FULL_SIZE,
1557                                      cd_timeout);
1558                                 start_ccb->ccb_h.ccb_bp = NULL;
1559                                 start_ccb->ccb_h.ccb_state = CD_CCB_TUR;
1560                                 xpt_action(start_ccb);
1561                         } else
1562                                 xpt_release_ccb(start_ccb);
1563                 } else {
1564                         if (softc->tur) {
1565                                 softc->tur = 0;
1566                                 cam_periph_release_locked(periph);
1567                         }
1568                         bioq_remove(&softc->bio_queue, bp);
1569
1570                         scsi_read_write(&start_ccb->csio,
1571                                         /*retries*/ cd_retry_count,
1572                                         /* cbfcnp */ cddone,
1573                                         MSG_SIMPLE_Q_TAG,
1574                                         /* read */bp->bio_cmd == BIO_READ ?
1575                                         SCSI_RW_READ : SCSI_RW_WRITE,
1576                                         /* byte2 */ 0,
1577                                         /* minimum_cmd_size */ 10,
1578                                         /* lba */ bp->bio_offset /
1579                                           softc->params.blksize,
1580                                         bp->bio_bcount / softc->params.blksize,
1581                                         /* data_ptr */ bp->bio_data,
1582                                         /* dxfer_len */ bp->bio_bcount,
1583                                         /* sense_len */ cd_retry_count ?
1584                                           SSD_FULL_SIZE : SF_NO_PRINT,
1585                                         /* timeout */ cd_timeout);
1586                         /* Use READ CD command for audio tracks. */
1587                         if (softc->params.blksize == 2352) {
1588                                 start_ccb->csio.cdb_io.cdb_bytes[0] = READ_CD;
1589                                 start_ccb->csio.cdb_io.cdb_bytes[9] = 0xf8;
1590                                 start_ccb->csio.cdb_io.cdb_bytes[10] = 0;
1591                                 start_ccb->csio.cdb_io.cdb_bytes[11] = 0;
1592                                 start_ccb->csio.cdb_len = 12;
1593                         }
1594                         start_ccb->ccb_h.ccb_state = CD_CCB_BUFFER_IO;
1595
1596
1597                         LIST_INSERT_HEAD(&softc->pending_ccbs,
1598                                          &start_ccb->ccb_h, periph_links.le);
1599                         softc->outstanding_cmds++;
1600
1601                         /* We expect a unit attention from this device */
1602                         if ((softc->flags & CD_FLAG_RETRY_UA) != 0) {
1603                                 start_ccb->ccb_h.ccb_state |= CD_CCB_RETRY_UA;
1604                                 softc->flags &= ~CD_FLAG_RETRY_UA;
1605                         }
1606
1607                         start_ccb->ccb_h.ccb_bp = bp;
1608                         bp = bioq_first(&softc->bio_queue);
1609
1610                         xpt_action(start_ccb);
1611                 }
1612                 if (bp != NULL || softc->tur ||
1613                     periph->immediate_priority != CAM_PRIORITY_NONE) {
1614                         /* Have more work to do, so ensure we stay scheduled */
1615                         xpt_schedule(periph, min(CAM_PRIORITY_NORMAL,
1616                             periph->immediate_priority));
1617                 }
1618                 break;
1619         }
1620         case CD_STATE_PROBE:
1621         {
1622
1623                 rcap = (struct scsi_read_capacity_data *)malloc(sizeof(*rcap),
1624                     M_SCSICD, M_NOWAIT | M_ZERO);
1625                 if (rcap == NULL) {
1626                         xpt_print(periph->path,
1627                             "cdstart: Couldn't malloc read_capacity data\n");
1628                         /* cd_free_periph??? */
1629                         break;
1630                 }
1631                 csio = &start_ccb->csio;
1632                 scsi_read_capacity(csio,
1633                                    /*retries*/ cd_retry_count,
1634                                    cddone,
1635                                    MSG_SIMPLE_Q_TAG,
1636                                    rcap,
1637                                    SSD_FULL_SIZE,
1638                                    /*timeout*/20000);
1639                 start_ccb->ccb_h.ccb_bp = NULL;
1640                 start_ccb->ccb_h.ccb_state = CD_CCB_PROBE;
1641                 xpt_action(start_ccb);
1642                 break;
1643         }
1644         }
1645 }
1646
1647 static void
1648 cddone(struct cam_periph *periph, union ccb *done_ccb)
1649 {
1650         struct cd_softc *softc;
1651         struct ccb_scsiio *csio;
1652
1653         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("entering cddone\n"));
1654
1655         softc = (struct cd_softc *)periph->softc;
1656         csio = &done_ccb->csio;
1657
1658         switch (csio->ccb_h.ccb_state & CD_CCB_TYPE_MASK) {
1659         case CD_CCB_BUFFER_IO:
1660         {
1661                 struct bio      *bp;
1662                 int             error;
1663
1664                 bp = (struct bio *)done_ccb->ccb_h.ccb_bp;
1665                 error = 0;
1666
1667                 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1668                         int sf;
1669
1670                         if ((done_ccb->ccb_h.ccb_state & CD_CCB_RETRY_UA) != 0)
1671                                 sf = SF_RETRY_UA;
1672                         else
1673                                 sf = 0;
1674
1675                         error = cderror(done_ccb, CAM_RETRY_SELTO, sf);
1676                         if (error == ERESTART) {
1677                                 /*
1678                                  * A retry was scheuled, so
1679                                  * just return.
1680                                  */
1681                                 return;
1682                         }
1683                 }
1684
1685                 if (error != 0) {
1686                         xpt_print(periph->path,
1687                             "cddone: got error %#x back\n", error);
1688                         bioq_flush(&softc->bio_queue, NULL, EIO);
1689                         bp->bio_resid = bp->bio_bcount;
1690                         bp->bio_error = error;
1691                         bp->bio_flags |= BIO_ERROR;
1692                         if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
1693                                 cam_release_devq(done_ccb->ccb_h.path,
1694                                          /*relsim_flags*/0,
1695                                          /*reduction*/0,
1696                                          /*timeout*/0,
1697                                          /*getcount_only*/0);
1698
1699                 } else {
1700                         bp->bio_resid = csio->resid;
1701                         bp->bio_error = 0;
1702                         if (bp->bio_resid != 0) {
1703                                 /*
1704                                  * Short transfer ???
1705                                  * XXX: not sure this is correct for partial
1706                                  * transfers at EOM
1707                                  */
1708                                 bp->bio_flags |= BIO_ERROR;
1709                         }
1710                 }
1711
1712                 LIST_REMOVE(&done_ccb->ccb_h, periph_links.le);
1713                 softc->outstanding_cmds--;
1714
1715                 if (softc->flags & CD_FLAG_CHANGER)
1716                         cdchangerschedule(softc);
1717
1718                 biofinish(bp, NULL, 0);
1719                 break;
1720         }
1721         case CD_CCB_PROBE:
1722         {
1723                 struct     scsi_read_capacity_data *rdcap;
1724                 char       announce_buf[120]; /*
1725                                                * Currently (9/30/97) the
1726                                                * longest possible announce
1727                                                * buffer is 108 bytes, for the
1728                                                * first error case below.
1729                                                * That is 39 bytes for the
1730                                                * basic string, 16 bytes for the
1731                                                * biggest sense key (hardware
1732                                                * error), 52 bytes for the
1733                                                * text of the largest sense
1734                                                * qualifier valid for a CDROM,
1735                                                * (0x72, 0x03 or 0x04,
1736                                                * 0x03), and one byte for the
1737                                                * null terminating character.
1738                                                * To allow for longer strings,
1739                                                * the announce buffer is 120
1740                                                * bytes.
1741                                                */
1742                 struct     cd_params *cdp;
1743                 int error;
1744
1745                 cdp = &softc->params;
1746
1747                 rdcap = (struct scsi_read_capacity_data *)csio->data_ptr;
1748
1749                 cdp->disksize = scsi_4btoul (rdcap->addr) + 1;
1750                 cdp->blksize = scsi_4btoul (rdcap->length);
1751
1752                 /*
1753                  * Retry any UNIT ATTENTION type errors.  They
1754                  * are expected at boot.
1755                  */
1756                 if ((csio->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP ||
1757                     (error = cderror(done_ccb, CAM_RETRY_SELTO,
1758                                 SF_RETRY_UA | SF_NO_PRINT)) == 0) {
1759
1760                         snprintf(announce_buf, sizeof(announce_buf),
1761                                 "cd present [%lu x %lu byte records]",
1762                                 cdp->disksize, (u_long)cdp->blksize);
1763
1764                 } else {
1765                         if (error == ERESTART) {
1766                                 /*
1767                                  * A retry was scheuled, so
1768                                  * just return.
1769                                  */
1770                                 return;
1771                         } else {
1772                                 int asc, ascq;
1773                                 int sense_key, error_code;
1774                                 int have_sense;
1775                                 cam_status status;
1776                                 struct ccb_getdev cgd;
1777
1778                                 /* Don't wedge this device's queue */
1779                                 if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
1780                                         cam_release_devq(done_ccb->ccb_h.path,
1781                                                  /*relsim_flags*/0,
1782                                                  /*reduction*/0,
1783                                                  /*timeout*/0,
1784                                                  /*getcount_only*/0);
1785
1786                                 status = done_ccb->ccb_h.status;
1787
1788                                 xpt_setup_ccb(&cgd.ccb_h,
1789                                               done_ccb->ccb_h.path,
1790                                               CAM_PRIORITY_NORMAL);
1791                                 cgd.ccb_h.func_code = XPT_GDEV_TYPE;
1792                                 xpt_action((union ccb *)&cgd);
1793
1794                                 if (scsi_extract_sense_ccb(done_ccb,
1795                                     &error_code, &sense_key, &asc, &ascq))
1796                                         have_sense = TRUE;
1797                                 else
1798                                         have_sense = FALSE;
1799
1800                                 /*
1801                                  * Attach to anything that claims to be a
1802                                  * CDROM or WORM device, as long as it
1803                                  * doesn't return a "Logical unit not
1804                                  * supported" (0x25) error.
1805                                  */
1806                                 if ((have_sense) && (asc != 0x25)
1807                                  && (error_code == SSD_CURRENT_ERROR)) {
1808                                         const char *sense_key_desc;
1809                                         const char *asc_desc;
1810
1811                                         scsi_sense_desc(sense_key, asc, ascq,
1812                                                         &cgd.inq_data,
1813                                                         &sense_key_desc,
1814                                                         &asc_desc);
1815                                         snprintf(announce_buf,
1816                                             sizeof(announce_buf),
1817                                                 "Attempt to query device "
1818                                                 "size failed: %s, %s",
1819                                                 sense_key_desc,
1820                                                 asc_desc);
1821                                 } else if ((have_sense == 0)
1822                                       && ((status & CAM_STATUS_MASK) ==
1823                                            CAM_SCSI_STATUS_ERROR)
1824                                       && (csio->scsi_status ==
1825                                           SCSI_STATUS_BUSY)) {
1826                                         snprintf(announce_buf,
1827                                             sizeof(announce_buf),
1828                                             "Attempt to query device "
1829                                             "size failed: SCSI Status: %s",
1830                                             scsi_status_string(csio));
1831                                 } else if (SID_TYPE(&cgd.inq_data) == T_CDROM) {
1832                                         /*
1833                                          * We only print out an error for
1834                                          * CDROM type devices.  For WORM
1835                                          * devices, we don't print out an
1836                                          * error since a few WORM devices
1837                                          * don't support CDROM commands.
1838                                          * If we have sense information, go
1839                                          * ahead and print it out.
1840                                          * Otherwise, just say that we
1841                                          * couldn't attach.
1842                                          */
1843
1844                                         /*
1845                                          * Just print out the error, not
1846                                          * the full probe message, when we
1847                                          * don't attach.
1848                                          */
1849                                         if (have_sense)
1850                                                 scsi_sense_print(
1851                                                         &done_ccb->csio);
1852                                         else {
1853                                                 xpt_print(periph->path,
1854                                                     "got CAM status %#x\n",
1855                                                     done_ccb->ccb_h.status);
1856                                         }
1857                                         xpt_print(periph->path, "fatal error, "
1858                                             "failed to attach to device\n");
1859                                         /*
1860                                          * Invalidate this peripheral.
1861                                          */
1862                                         cam_periph_invalidate(periph);
1863
1864                                         announce_buf[0] = '\0';
1865                                 } else {
1866
1867                                         /*
1868                                          * Invalidate this peripheral.
1869                                          */
1870                                         cam_periph_invalidate(periph);
1871                                         announce_buf[0] = '\0';
1872                                 }
1873                         }
1874                 }
1875                 free(rdcap, M_SCSICD);
1876                 if (announce_buf[0] != '\0') {
1877                         xpt_announce_periph(periph, announce_buf);
1878                         xpt_announce_quirks(periph, softc->quirks,
1879                             CD_Q_BIT_STRING);
1880                         if (softc->flags & CD_FLAG_CHANGER)
1881                                 cdchangerschedule(softc);
1882                         /*
1883                          * Create our sysctl variables, now that we know
1884                          * we have successfully attached.
1885                          */
1886                         taskqueue_enqueue(taskqueue_thread,&softc->sysctl_task);
1887                 }
1888                 softc->state = CD_STATE_NORMAL;
1889                 /*
1890                  * Since our peripheral may be invalidated by an error
1891                  * above or an external event, we must release our CCB
1892                  * before releasing the probe lock on the peripheral.
1893                  * The peripheral will only go away once the last lock
1894                  * is removed, and we need it around for the CCB release
1895                  * operation.
1896                  */
1897                 xpt_release_ccb(done_ccb);
1898                 cam_periph_unhold(periph);
1899                 return;
1900         }
1901         case CD_CCB_WAITING:
1902         {
1903                 /* Caller will release the CCB */
1904                 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE,
1905                           ("trying to wakeup ccbwait\n"));
1906
1907                 wakeup(&done_ccb->ccb_h.cbfcnp);
1908                 return;
1909         }
1910         case CD_CCB_TUR:
1911         {
1912                 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1913
1914                         if (cderror(done_ccb, CAM_RETRY_SELTO,
1915                             SF_RETRY_UA | SF_NO_RECOVERY | SF_NO_PRINT) ==
1916                             ERESTART)
1917                                 return;
1918                         if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
1919                                 cam_release_devq(done_ccb->ccb_h.path,
1920                                                  /*relsim_flags*/0,
1921                                                  /*reduction*/0,
1922                                                  /*timeout*/0,
1923                                                  /*getcount_only*/0);
1924                 }
1925                 xpt_release_ccb(done_ccb);
1926                 cam_periph_release_locked(periph);
1927                 return;
1928         }
1929         default:
1930                 break;
1931         }
1932         xpt_release_ccb(done_ccb);
1933 }
1934
1935 static union cd_pages *
1936 cdgetpage(struct cd_mode_params *mode_params)
1937 {
1938         union cd_pages *page;
1939
1940         if (mode_params->cdb_size == 10)
1941                 page = (union cd_pages *)find_mode_page_10(
1942                         (struct scsi_mode_header_10 *)mode_params->mode_buf);
1943         else
1944                 page = (union cd_pages *)find_mode_page_6(
1945                         (struct scsi_mode_header_6 *)mode_params->mode_buf);
1946
1947         return (page);
1948 }
1949
1950 static int
1951 cdgetpagesize(int page_num)
1952 {
1953         int i;
1954
1955         for (i = 0; i < (sizeof(cd_page_size_table)/
1956              sizeof(cd_page_size_table[0])); i++) {
1957                 if (cd_page_size_table[i].page == page_num)
1958                         return (cd_page_size_table[i].page_size);
1959         }
1960
1961         return (-1);
1962 }
1963
1964 static int
1965 cdioctl(struct disk *dp, u_long cmd, void *addr, int flag, struct thread *td)
1966 {
1967
1968         struct  cam_periph *periph;
1969         struct  cd_softc *softc;
1970         int     nocopyout, error = 0;
1971
1972         periph = (struct cam_periph *)dp->d_drv1;
1973         cam_periph_lock(periph);
1974
1975         softc = (struct cd_softc *)periph->softc;
1976
1977         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE,
1978             ("cdioctl(%#lx)\n", cmd));
1979
1980         if ((error = cam_periph_hold(periph, PRIBIO | PCATCH)) != 0) {
1981                 cam_periph_unlock(periph);
1982                 cam_periph_release(periph);
1983                 return (error);
1984         }
1985
1986         /*
1987          * If we don't have media loaded, check for it.  If still don't
1988          * have media loaded, we can only do a load or eject.
1989          *
1990          * We only care whether media is loaded if this is a cd-specific ioctl
1991          * (thus the IOCGROUP check below).  Note that this will break if
1992          * anyone adds any ioctls into the switch statement below that don't
1993          * have their ioctl group set to 'c'.
1994          */
1995         if (((softc->flags & CD_FLAG_VALID_MEDIA) == 0)
1996          && ((cmd != CDIOCCLOSE)
1997           && (cmd != CDIOCEJECT))
1998          && (IOCGROUP(cmd) == 'c')) {
1999                 error = cdcheckmedia(periph);
2000                 if (error != 0) {
2001                         cam_periph_unhold(periph);
2002                         cam_periph_unlock(periph);
2003                         return (error);
2004                 }
2005         }
2006         /*
2007          * Drop the lock here so later mallocs can use WAITOK.  The periph
2008          * is essentially locked still with the cam_periph_hold call above.
2009          */
2010         cam_periph_unlock(periph);
2011
2012         nocopyout = 0;
2013         switch (cmd) {
2014
2015         case CDIOCPLAYTRACKS:
2016                 {
2017                         struct ioc_play_track *args
2018                             = (struct ioc_play_track *) addr;
2019                         struct cd_mode_params params;
2020                         union cd_pages *page;
2021
2022                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2023                         params.mode_buf = malloc(params.alloc_len, M_SCSICD,
2024                                                  M_WAITOK | M_ZERO);
2025
2026                         cam_periph_lock(periph);
2027                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2028                                   ("trying to do CDIOCPLAYTRACKS\n"));
2029
2030                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2031                         if (error) {
2032                                 free(params.mode_buf, M_SCSICD);
2033                                 cam_periph_unlock(periph);
2034                                 break;
2035                         }
2036                         page = cdgetpage(&params);
2037
2038                         page->audio.flags &= ~CD_PA_SOTC;
2039                         page->audio.flags |= CD_PA_IMMED;
2040                         error = cdsetmode(periph, &params);
2041                         free(params.mode_buf, M_SCSICD);
2042                         if (error) {
2043                                 cam_periph_unlock(periph);
2044                                 break;
2045                         }
2046
2047                         /*
2048                          * This was originally implemented with the PLAY
2049                          * AUDIO TRACK INDEX command, but that command was
2050                          * deprecated after SCSI-2.  Most (all?) SCSI CDROM
2051                          * drives support it but ATAPI and ATAPI-derivative
2052                          * drives don't seem to support it.  So we keep a
2053                          * cache of the table of contents and translate
2054                          * track numbers to MSF format.
2055                          */
2056                         if (softc->flags & CD_FLAG_VALID_TOC) {
2057                                 union msf_lba *sentry, *eentry;
2058                                 int st, et;
2059
2060                                 if (args->end_track <
2061                                     softc->toc.header.ending_track + 1)
2062                                         args->end_track++;
2063                                 if (args->end_track >
2064                                     softc->toc.header.ending_track + 1)
2065                                         args->end_track =
2066                                             softc->toc.header.ending_track + 1;
2067                                 st = args->start_track -
2068                                         softc->toc.header.starting_track;
2069                                 et = args->end_track -
2070                                         softc->toc.header.starting_track;
2071                                 if ((st < 0)
2072                                  || (et < 0)
2073                                  || (st > (softc->toc.header.ending_track -
2074                                      softc->toc.header.starting_track))) {
2075                                         error = EINVAL;
2076                                         cam_periph_unlock(periph);
2077                                         break;
2078                                 }
2079                                 sentry = &softc->toc.entries[st].addr;
2080                                 eentry = &softc->toc.entries[et].addr;
2081                                 error = cdplaymsf(periph,
2082                                                   sentry->msf.minute,
2083                                                   sentry->msf.second,
2084                                                   sentry->msf.frame,
2085                                                   eentry->msf.minute,
2086                                                   eentry->msf.second,
2087                                                   eentry->msf.frame);
2088                         } else {
2089                                 /*
2090                                  * If we don't have a valid TOC, try the
2091                                  * play track index command.  It is part of
2092                                  * the SCSI-2 spec, but was removed in the
2093                                  * MMC specs.  ATAPI and ATAPI-derived
2094                                  * drives don't support it.
2095                                  */
2096                                 if (softc->quirks & CD_Q_BCD_TRACKS) {
2097                                         args->start_track =
2098                                                 bin2bcd(args->start_track);
2099                                         args->end_track =
2100                                                 bin2bcd(args->end_track);
2101                                 }
2102                                 error = cdplaytracks(periph,
2103                                                      args->start_track,
2104                                                      args->start_index,
2105                                                      args->end_track,
2106                                                      args->end_index);
2107                         }
2108                         cam_periph_unlock(periph);
2109                 }
2110                 break;
2111         case CDIOCPLAYMSF:
2112                 {
2113                         struct ioc_play_msf *args
2114                                 = (struct ioc_play_msf *) addr;
2115                         struct cd_mode_params params;
2116                         union cd_pages *page;
2117
2118                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2119                         params.mode_buf = malloc(params.alloc_len, M_SCSICD,
2120                                                  M_WAITOK | M_ZERO);
2121
2122                         cam_periph_lock(periph);
2123                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2124                                   ("trying to do CDIOCPLAYMSF\n"));
2125
2126                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2127                         if (error) {
2128                                 free(params.mode_buf, M_SCSICD);
2129                                 cam_periph_unlock(periph);
2130                                 break;
2131                         }
2132                         page = cdgetpage(&params);
2133
2134                         page->audio.flags &= ~CD_PA_SOTC;
2135                         page->audio.flags |= CD_PA_IMMED;
2136                         error = cdsetmode(periph, &params);
2137                         free(params.mode_buf, M_SCSICD);
2138                         if (error) {
2139                                 cam_periph_unlock(periph);
2140                                 break;
2141                         }
2142                         error = cdplaymsf(periph,
2143                                           args->start_m,
2144                                           args->start_s,
2145                                           args->start_f,
2146                                           args->end_m,
2147                                           args->end_s,
2148                                           args->end_f);
2149                         cam_periph_unlock(periph);
2150                 }
2151                 break;
2152         case CDIOCPLAYBLOCKS:
2153                 {
2154                         struct ioc_play_blocks *args
2155                                 = (struct ioc_play_blocks *) addr;
2156                         struct cd_mode_params params;
2157                         union cd_pages *page;
2158
2159                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2160                         params.mode_buf = malloc(params.alloc_len, M_SCSICD,
2161                                                  M_WAITOK | M_ZERO);
2162
2163                         cam_periph_lock(periph);
2164                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2165                                   ("trying to do CDIOCPLAYBLOCKS\n"));
2166
2167
2168                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2169                         if (error) {
2170                                 free(params.mode_buf, M_SCSICD);
2171                                 cam_periph_unlock(periph);
2172                                 break;
2173                         }
2174                         page = cdgetpage(&params);
2175
2176                         page->audio.flags &= ~CD_PA_SOTC;
2177                         page->audio.flags |= CD_PA_IMMED;
2178                         error = cdsetmode(periph, &params);
2179                         free(params.mode_buf, M_SCSICD);
2180                         if (error) {
2181                                 cam_periph_unlock(periph);
2182                                 break;
2183                         }
2184                         error = cdplay(periph, args->blk, args->len);
2185                         cam_periph_unlock(periph);
2186                 }
2187                 break;
2188         case CDIOCREADSUBCHANNEL_SYSSPACE:
2189                 nocopyout = 1;
2190                 /* Fallthrough */
2191         case CDIOCREADSUBCHANNEL:
2192                 {
2193                         struct ioc_read_subchannel *args
2194                                 = (struct ioc_read_subchannel *) addr;
2195                         struct cd_sub_channel_info *data;
2196                         u_int32_t len = args->data_len;
2197
2198                         data = malloc(sizeof(struct cd_sub_channel_info),
2199                                       M_SCSICD, M_WAITOK | M_ZERO);
2200
2201                         cam_periph_lock(periph);
2202                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2203                                   ("trying to do CDIOCREADSUBCHANNEL\n"));
2204
2205                         if ((len > sizeof(struct cd_sub_channel_info)) ||
2206                             (len < sizeof(struct cd_sub_channel_header))) {
2207                                 printf(
2208                                         "scsi_cd: cdioctl: "
2209                                         "cdioreadsubchannel: error, len=%d\n",
2210                                         len);
2211                                 error = EINVAL;
2212                                 free(data, M_SCSICD);
2213                                 cam_periph_unlock(periph);
2214                                 break;
2215                         }
2216
2217                         if (softc->quirks & CD_Q_BCD_TRACKS)
2218                                 args->track = bin2bcd(args->track);
2219
2220                         error = cdreadsubchannel(periph, args->address_format,
2221                                 args->data_format, args->track, data, len);
2222
2223                         if (error) {
2224                                 free(data, M_SCSICD);
2225                                 cam_periph_unlock(periph);
2226                                 break;
2227                         }
2228                         if (softc->quirks & CD_Q_BCD_TRACKS)
2229                                 data->what.track_info.track_number =
2230                                     bcd2bin(data->what.track_info.track_number);
2231                         len = min(len, ((data->header.data_len[0] << 8) +
2232                                 data->header.data_len[1] +
2233                                 sizeof(struct cd_sub_channel_header)));
2234                         cam_periph_unlock(periph);
2235                         if (nocopyout == 0) {
2236                                 if (copyout(data, args->data, len) != 0) {
2237                                         error = EFAULT;
2238                                 }
2239                         } else {
2240                                 bcopy(data, args->data, len);
2241                         }
2242                         free(data, M_SCSICD);
2243                 }
2244                 break;
2245
2246         case CDIOREADTOCHEADER:
2247                 {
2248                         struct ioc_toc_header *th;
2249
2250                         th = malloc(sizeof(struct ioc_toc_header), M_SCSICD,
2251                                     M_WAITOK | M_ZERO);
2252
2253                         cam_periph_lock(periph);
2254                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2255                                   ("trying to do CDIOREADTOCHEADER\n"));
2256
2257                         error = cdreadtoc(periph, 0, 0, (u_int8_t *)th,
2258                                           sizeof (*th), /*sense_flags*/SF_NO_PRINT);
2259                         if (error) {
2260                                 free(th, M_SCSICD);
2261                                 cam_periph_unlock(periph);
2262                                 break;
2263                         }
2264                         if (softc->quirks & CD_Q_BCD_TRACKS) {
2265                                 /* we are going to have to convert the BCD
2266                                  * encoding on the cd to what is expected
2267                                  */
2268                                 th->starting_track =
2269                                         bcd2bin(th->starting_track);
2270                                 th->ending_track = bcd2bin(th->ending_track);
2271                         }
2272                         th->len = ntohs(th->len);
2273                         bcopy(th, addr, sizeof(*th));
2274                         free(th, M_SCSICD);
2275                         cam_periph_unlock(periph);
2276                 }
2277                 break;
2278         case CDIOREADTOCENTRYS:
2279                 {
2280                         struct cd_tocdata *data;
2281                         struct cd_toc_single *lead;
2282                         struct ioc_read_toc_entry *te =
2283                                 (struct ioc_read_toc_entry *) addr;
2284                         struct ioc_toc_header *th;
2285                         u_int32_t len, readlen, idx, num;
2286                         u_int32_t starting_track = te->starting_track;
2287
2288                         data = malloc(sizeof(*data), M_SCSICD, M_WAITOK | M_ZERO);
2289                         lead = malloc(sizeof(*lead), M_SCSICD, M_WAITOK | M_ZERO);
2290
2291                         cam_periph_lock(periph);
2292                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2293                                   ("trying to do CDIOREADTOCENTRYS\n"));
2294
2295                         if (te->data_len < sizeof(struct cd_toc_entry)
2296                          || (te->data_len % sizeof(struct cd_toc_entry)) != 0
2297                          || (te->address_format != CD_MSF_FORMAT
2298                           && te->address_format != CD_LBA_FORMAT)) {
2299                                 error = EINVAL;
2300                                 printf("scsi_cd: error in readtocentries, "
2301                                        "returning EINVAL\n");
2302                                 free(data, M_SCSICD);
2303                                 free(lead, M_SCSICD);
2304                                 cam_periph_unlock(periph);
2305                                 break;
2306                         }
2307
2308                         th = &data->header;
2309                         error = cdreadtoc(periph, 0, 0, (u_int8_t *)th,
2310                                           sizeof (*th), /*sense_flags*/0);
2311                         if (error) {
2312                                 free(data, M_SCSICD);
2313                                 free(lead, M_SCSICD);
2314                                 cam_periph_unlock(periph);
2315                                 break;
2316                         }
2317
2318                         if (softc->quirks & CD_Q_BCD_TRACKS) {
2319                                 /* we are going to have to convert the BCD
2320                                  * encoding on the cd to what is expected
2321                                  */
2322                                 th->starting_track =
2323                                     bcd2bin(th->starting_track);
2324                                 th->ending_track = bcd2bin(th->ending_track);
2325                         }
2326
2327                         if (starting_track == 0)
2328                                 starting_track = th->starting_track;
2329                         else if (starting_track == LEADOUT)
2330                                 starting_track = th->ending_track + 1;
2331                         else if (starting_track < th->starting_track ||
2332                                  starting_track > th->ending_track + 1) {
2333                                 printf("scsi_cd: error in readtocentries, "
2334                                        "returning EINVAL\n");
2335                                 free(data, M_SCSICD);
2336                                 free(lead, M_SCSICD);
2337                                 cam_periph_unlock(periph);
2338                                 error = EINVAL;
2339                                 break;
2340                         }
2341
2342                         /* calculate reading length without leadout entry */
2343                         readlen = (th->ending_track - starting_track + 1) *
2344                                   sizeof(struct cd_toc_entry);
2345
2346                         /* and with leadout entry */
2347                         len = readlen + sizeof(struct cd_toc_entry);
2348                         if (te->data_len < len) {
2349                                 len = te->data_len;
2350                                 if (readlen > len)
2351                                         readlen = len;
2352                         }
2353                         if (len > sizeof(data->entries)) {
2354                                 printf("scsi_cd: error in readtocentries, "
2355                                        "returning EINVAL\n");
2356                                 error = EINVAL;
2357                                 free(data, M_SCSICD);
2358                                 free(lead, M_SCSICD);
2359                                 cam_periph_unlock(periph);
2360                                 break;
2361                         }
2362                         num = len / sizeof(struct cd_toc_entry);
2363
2364                         if (readlen > 0) {
2365                                 error = cdreadtoc(periph, te->address_format,
2366                                                   starting_track,
2367                                                   (u_int8_t *)data,
2368                                                   readlen + sizeof (*th),
2369                                                   /*sense_flags*/0);
2370                                 if (error) {
2371                                         free(data, M_SCSICD);
2372                                         free(lead, M_SCSICD);
2373                                         cam_periph_unlock(periph);
2374                                         break;
2375                                 }
2376                         }
2377
2378                         /* make leadout entry if needed */
2379                         idx = starting_track + num - 1;
2380                         if (softc->quirks & CD_Q_BCD_TRACKS)
2381                                 th->ending_track = bcd2bin(th->ending_track);
2382                         if (idx == th->ending_track + 1) {
2383                                 error = cdreadtoc(periph, te->address_format,
2384                                                   LEADOUT, (u_int8_t *)lead,
2385                                                   sizeof(*lead),
2386                                                   /*sense_flags*/0);
2387                                 if (error) {
2388                                         free(data, M_SCSICD);
2389                                         free(lead, M_SCSICD);
2390                                         cam_periph_unlock(periph);
2391                                         break;
2392                                 }
2393                                 data->entries[idx - starting_track] =
2394                                         lead->entry;
2395                         }
2396                         if (softc->quirks & CD_Q_BCD_TRACKS) {
2397                                 for (idx = 0; idx < num - 1; idx++) {
2398                                         data->entries[idx].track =
2399                                             bcd2bin(data->entries[idx].track);
2400                                 }
2401                         }
2402
2403                         cam_periph_unlock(periph);
2404                         error = copyout(data->entries, te->data, len);
2405                         free(data, M_SCSICD);
2406                         free(lead, M_SCSICD);
2407                 }
2408                 break;
2409         case CDIOREADTOCENTRY:
2410                 {
2411                         struct cd_toc_single *data;
2412                         struct ioc_read_toc_single_entry *te =
2413                                 (struct ioc_read_toc_single_entry *) addr;
2414                         struct ioc_toc_header *th;
2415                         u_int32_t track;
2416
2417                         data = malloc(sizeof(*data), M_SCSICD, M_WAITOK | M_ZERO);
2418
2419                         cam_periph_lock(periph);
2420                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2421                                   ("trying to do CDIOREADTOCENTRY\n"));
2422
2423                         if (te->address_format != CD_MSF_FORMAT
2424                             && te->address_format != CD_LBA_FORMAT) {
2425                                 printf("error in readtocentry, "
2426                                        " returning EINVAL\n");
2427                                 free(data, M_SCSICD);
2428                                 error = EINVAL;
2429                                 cam_periph_unlock(periph);
2430                                 break;
2431                         }
2432
2433                         th = &data->header;
2434                         error = cdreadtoc(periph, 0, 0, (u_int8_t *)th,
2435                                           sizeof (*th), /*sense_flags*/0);
2436                         if (error) {
2437                                 free(data, M_SCSICD);
2438                                 cam_periph_unlock(periph);
2439                                 break;
2440                         }
2441
2442                         if (softc->quirks & CD_Q_BCD_TRACKS) {
2443                                 /* we are going to have to convert the BCD
2444                                  * encoding on the cd to what is expected
2445                                  */
2446                                 th->starting_track =
2447                                     bcd2bin(th->starting_track);
2448                                 th->ending_track = bcd2bin(th->ending_track);
2449                         }
2450                         track = te->track;
2451                         if (track == 0)
2452                                 track = th->starting_track;
2453                         else if (track == LEADOUT)
2454                                 /* OK */;
2455                         else if (track < th->starting_track ||
2456                                  track > th->ending_track + 1) {
2457                                 printf("error in readtocentry, "
2458                                        " returning EINVAL\n");
2459                                 free(data, M_SCSICD);
2460                                 error = EINVAL;
2461                                 cam_periph_unlock(periph);
2462                                 break;
2463                         }
2464
2465                         error = cdreadtoc(periph, te->address_format, track,
2466                                           (u_int8_t *)data, sizeof(*data),
2467                                           /*sense_flags*/0);
2468                         if (error) {
2469                                 free(data, M_SCSICD);
2470                                 cam_periph_unlock(periph);
2471                                 break;
2472                         }
2473
2474                         if (softc->quirks & CD_Q_BCD_TRACKS)
2475                                 data->entry.track = bcd2bin(data->entry.track);
2476                         bcopy(&data->entry, &te->entry,
2477                               sizeof(struct cd_toc_entry));
2478                         free(data, M_SCSICD);
2479                         cam_periph_unlock(periph);
2480                 }
2481                 break;
2482         case CDIOCSETPATCH:
2483                 {
2484                         struct ioc_patch *arg = (struct ioc_patch *)addr;
2485                         struct cd_mode_params params;
2486                         union cd_pages *page;
2487
2488                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2489                         params.mode_buf = malloc(params.alloc_len, M_SCSICD,
2490                                                  M_WAITOK | M_ZERO);
2491
2492                         cam_periph_lock(periph);
2493                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2494                                   ("trying to do CDIOCSETPATCH\n"));
2495
2496                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2497                         if (error) {
2498                                 free(params.mode_buf, M_SCSICD);
2499                                 cam_periph_unlock(periph);
2500                                 break;
2501                         }
2502                         page = cdgetpage(&params);
2503
2504                         page->audio.port[LEFT_PORT].channels =
2505                                 arg->patch[0];
2506                         page->audio.port[RIGHT_PORT].channels =
2507                                 arg->patch[1];
2508                         page->audio.port[2].channels = arg->patch[2];
2509                         page->audio.port[3].channels = arg->patch[3];
2510                         error = cdsetmode(periph, &params);
2511                         free(params.mode_buf, M_SCSICD);
2512                         cam_periph_unlock(periph);
2513                 }
2514                 break;
2515         case CDIOCGETVOL:
2516                 {
2517                         struct ioc_vol *arg = (struct ioc_vol *) addr;
2518                         struct cd_mode_params params;
2519                         union cd_pages *page;
2520
2521                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2522                         params.mode_buf = malloc(params.alloc_len, M_SCSICD,
2523                                                  M_WAITOK | M_ZERO);
2524
2525                         cam_periph_lock(periph);
2526                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2527                                   ("trying to do CDIOCGETVOL\n"));
2528
2529                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2530                         if (error) {
2531                                 free(params.mode_buf, M_SCSICD);
2532                                 cam_periph_unlock(periph);
2533                                 break;
2534                         }
2535                         page = cdgetpage(&params);
2536
2537                         arg->vol[LEFT_PORT] =
2538                                 page->audio.port[LEFT_PORT].volume;
2539                         arg->vol[RIGHT_PORT] =
2540                                 page->audio.port[RIGHT_PORT].volume;
2541                         arg->vol[2] = page->audio.port[2].volume;
2542                         arg->vol[3] = page->audio.port[3].volume;
2543                         free(params.mode_buf, M_SCSICD);
2544                         cam_periph_unlock(periph);
2545                 }
2546                 break;
2547         case CDIOCSETVOL:
2548                 {
2549                         struct ioc_vol *arg = (struct ioc_vol *) addr;
2550                         struct cd_mode_params params;
2551                         union cd_pages *page;
2552
2553                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2554                         params.mode_buf = malloc(params.alloc_len, M_SCSICD,
2555                                                  M_WAITOK | M_ZERO);
2556
2557                         cam_periph_lock(periph);
2558                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2559                                   ("trying to do CDIOCSETVOL\n"));
2560
2561                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2562                         if (error) {
2563                                 free(params.mode_buf, M_SCSICD);
2564                                 cam_periph_unlock(periph);
2565                                 break;
2566                         }
2567                         page = cdgetpage(&params);
2568
2569                         page->audio.port[LEFT_PORT].channels = CHANNEL_0;
2570                         page->audio.port[LEFT_PORT].volume =
2571                                 arg->vol[LEFT_PORT];
2572                         page->audio.port[RIGHT_PORT].channels = CHANNEL_1;
2573                         page->audio.port[RIGHT_PORT].volume =
2574                                 arg->vol[RIGHT_PORT];
2575                         page->audio.port[2].volume = arg->vol[2];
2576                         page->audio.port[3].volume = arg->vol[3];
2577                         error = cdsetmode(periph, &params);
2578                         cam_periph_unlock(periph);
2579                         free(params.mode_buf, M_SCSICD);
2580                 }
2581                 break;
2582         case CDIOCSETMONO:
2583                 {
2584                         struct cd_mode_params params;
2585                         union cd_pages *page;
2586
2587                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2588                         params.mode_buf = malloc(params.alloc_len, M_SCSICD,
2589                                                  M_WAITOK | M_ZERO);
2590
2591                         cam_periph_lock(periph);
2592                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2593                                   ("trying to do CDIOCSETMONO\n"));
2594
2595                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2596                         if (error) {
2597                                 free(params.mode_buf, M_SCSICD);
2598                                 cam_periph_unlock(periph);
2599                                 break;
2600                         }
2601                         page = cdgetpage(&params);
2602
2603                         page->audio.port[LEFT_PORT].channels =
2604                                 LEFT_CHANNEL | RIGHT_CHANNEL;
2605                         page->audio.port[RIGHT_PORT].channels =
2606                                 LEFT_CHANNEL | RIGHT_CHANNEL;
2607                         page->audio.port[2].channels = 0;
2608                         page->audio.port[3].channels = 0;
2609                         error = cdsetmode(periph, &params);
2610                         cam_periph_unlock(periph);
2611                         free(params.mode_buf, M_SCSICD);
2612                 }
2613                 break;
2614         case CDIOCSETSTEREO:
2615                 {
2616                         struct cd_mode_params params;
2617                         union cd_pages *page;
2618
2619                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2620                         params.mode_buf = malloc(params.alloc_len, M_SCSICD,
2621                                                  M_WAITOK | M_ZERO);
2622
2623                         cam_periph_lock(periph);
2624                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2625                                   ("trying to do CDIOCSETSTEREO\n"));
2626
2627                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2628                         if (error) {
2629                                 free(params.mode_buf, M_SCSICD);
2630                                 cam_periph_unlock(periph);
2631                                 break;
2632                         }
2633                         page = cdgetpage(&params);
2634
2635                         page->audio.port[LEFT_PORT].channels =
2636                                 LEFT_CHANNEL;
2637                         page->audio.port[RIGHT_PORT].channels =
2638                                 RIGHT_CHANNEL;
2639                         page->audio.port[2].channels = 0;
2640                         page->audio.port[3].channels = 0;
2641                         error = cdsetmode(periph, &params);
2642                         free(params.mode_buf, M_SCSICD);
2643                         cam_periph_unlock(periph);
2644                 }
2645                 break;
2646         case CDIOCSETMUTE:
2647                 {
2648                         struct cd_mode_params params;
2649                         union cd_pages *page;
2650
2651                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2652                         params.mode_buf = malloc(params.alloc_len, M_SCSICD,
2653                                                  M_WAITOK | M_ZERO);
2654
2655                         cam_periph_lock(periph);
2656                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2657                                   ("trying to do CDIOCSETMUTE\n"));
2658
2659                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2660                         if (error) {
2661                                 free(params.mode_buf, M_SCSICD);
2662                                 cam_periph_unlock(periph);
2663                                 break;
2664                         }
2665                         page = cdgetpage(&params);
2666
2667                         page->audio.port[LEFT_PORT].channels = 0;
2668                         page->audio.port[RIGHT_PORT].channels = 0;
2669                         page->audio.port[2].channels = 0;
2670                         page->audio.port[3].channels = 0;
2671                         error = cdsetmode(periph, &params);
2672                         free(params.mode_buf, M_SCSICD);
2673                         cam_periph_unlock(periph);
2674                 }
2675                 break;
2676         case CDIOCSETLEFT:
2677                 {
2678                         struct cd_mode_params params;
2679                         union cd_pages *page;
2680
2681                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2682                         params.mode_buf = malloc(params.alloc_len, M_SCSICD,
2683                                                  M_WAITOK | M_ZERO);
2684
2685                         cam_periph_lock(periph);
2686                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2687                                   ("trying to do CDIOCSETLEFT\n"));
2688
2689                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2690                         if (error) {
2691                                 free(params.mode_buf, M_SCSICD);
2692                                 cam_periph_unlock(periph);
2693                                 break;
2694                         }
2695                         page = cdgetpage(&params);
2696
2697                         page->audio.port[LEFT_PORT].channels = LEFT_CHANNEL;
2698                         page->audio.port[RIGHT_PORT].channels = LEFT_CHANNEL;
2699                         page->audio.port[2].channels = 0;
2700                         page->audio.port[3].channels = 0;
2701                         error = cdsetmode(periph, &params);
2702                         free(params.mode_buf, M_SCSICD);
2703                         cam_periph_unlock(periph);
2704                 }
2705                 break;
2706         case CDIOCSETRIGHT:
2707                 {
2708                         struct cd_mode_params params;
2709                         union cd_pages *page;
2710
2711                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2712                         params.mode_buf = malloc(params.alloc_len, M_SCSICD,
2713                                                  M_WAITOK | M_ZERO);
2714
2715                         cam_periph_lock(periph);
2716                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2717                                   ("trying to do CDIOCSETRIGHT\n"));
2718
2719                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2720                         if (error) {
2721                                 free(params.mode_buf, M_SCSICD);
2722                                 cam_periph_unlock(periph);
2723                                 break;
2724                         }
2725                         page = cdgetpage(&params);
2726
2727                         page->audio.port[LEFT_PORT].channels = RIGHT_CHANNEL;
2728                         page->audio.port[RIGHT_PORT].channels = RIGHT_CHANNEL;
2729                         page->audio.port[2].channels = 0;
2730                         page->audio.port[3].channels = 0;
2731                         error = cdsetmode(periph, &params);
2732                         free(params.mode_buf, M_SCSICD);
2733                         cam_periph_unlock(periph);
2734                 }
2735                 break;
2736         case CDIOCRESUME:
2737                 cam_periph_lock(periph);
2738                 error = cdpause(periph, 1);
2739                 cam_periph_unlock(periph);
2740                 break;
2741         case CDIOCPAUSE:
2742                 cam_periph_lock(periph);
2743                 error = cdpause(periph, 0);
2744                 cam_periph_unlock(periph);
2745                 break;
2746         case CDIOCSTART:
2747                 cam_periph_lock(periph);
2748                 error = cdstartunit(periph, 0);
2749                 cam_periph_unlock(periph);
2750                 break;
2751         case CDIOCCLOSE:
2752                 cam_periph_lock(periph);
2753                 error = cdstartunit(periph, 1);
2754                 cam_periph_unlock(periph);
2755                 break;
2756         case CDIOCSTOP:
2757                 cam_periph_lock(periph);
2758                 error = cdstopunit(periph, 0);
2759                 cam_periph_unlock(periph);
2760                 break;
2761         case CDIOCEJECT:
2762                 cam_periph_lock(periph);
2763                 error = cdstopunit(periph, 1);
2764                 cam_periph_unlock(periph);
2765                 break;
2766         case CDIOCALLOW:
2767                 cam_periph_lock(periph);
2768                 cdprevent(periph, PR_ALLOW);
2769                 cam_periph_unlock(periph);
2770                 break;
2771         case CDIOCPREVENT:
2772                 cam_periph_lock(periph);
2773                 cdprevent(periph, PR_PREVENT);
2774                 cam_periph_unlock(periph);
2775                 break;
2776         case CDIOCSETDEBUG:
2777                 /* sc_link->flags |= (SDEV_DB1 | SDEV_DB2); */
2778                 error = ENOTTY;
2779                 break;
2780         case CDIOCCLRDEBUG:
2781                 /* sc_link->flags &= ~(SDEV_DB1 | SDEV_DB2); */
2782                 error = ENOTTY;
2783                 break;
2784         case CDIOCRESET:
2785                 /* return (cd_reset(periph)); */
2786                 error = ENOTTY;
2787                 break;
2788         case CDRIOCREADSPEED:
2789                 cam_periph_lock(periph);
2790                 error = cdsetspeed(periph, *(u_int32_t *)addr, CDR_MAX_SPEED);
2791                 cam_periph_unlock(periph);
2792                 break;
2793         case CDRIOCWRITESPEED:
2794                 cam_periph_lock(periph);
2795                 error = cdsetspeed(periph, CDR_MAX_SPEED, *(u_int32_t *)addr);
2796                 cam_periph_unlock(periph);
2797                 break;
2798         case CDRIOCGETBLOCKSIZE:
2799                 *(int *)addr = softc->params.blksize;
2800                 break;
2801         case CDRIOCSETBLOCKSIZE:
2802                 if (*(int *)addr <= 0) {
2803                         error = EINVAL;
2804                         break;
2805                 }
2806                 softc->disk->d_sectorsize = softc->params.blksize = *(int *)addr;
2807                 break;
2808         case DVDIOCSENDKEY:
2809         case DVDIOCREPORTKEY: {
2810                 struct dvd_authinfo *authinfo;
2811
2812                 authinfo = (struct dvd_authinfo *)addr;
2813
2814                 if (cmd == DVDIOCREPORTKEY)
2815                         error = cdreportkey(periph, authinfo);
2816                 else
2817                         error = cdsendkey(periph, authinfo);
2818                 break;
2819                 }
2820         case DVDIOCREADSTRUCTURE: {
2821                 struct dvd_struct *dvdstruct;
2822
2823                 dvdstruct = (struct dvd_struct *)addr;
2824
2825                 error = cdreaddvdstructure(periph, dvdstruct);
2826
2827                 break;
2828         }
2829         default:
2830                 cam_periph_lock(periph);
2831                 error = cam_periph_ioctl(periph, cmd, addr, cderror);
2832                 cam_periph_unlock(periph);
2833                 break;
2834         }
2835
2836         cam_periph_lock(periph);
2837         cam_periph_unhold(periph);
2838
2839         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("leaving cdioctl\n"));
2840         if (error && bootverbose) {
2841                 printf("scsi_cd.c::ioctl cmd=%08lx error=%d\n", cmd, error);
2842         }
2843         cam_periph_unlock(periph);
2844
2845         return (error);
2846 }
2847
2848 static void
2849 cdprevent(struct cam_periph *periph, int action)
2850 {
2851         union   ccb *ccb;
2852         struct  cd_softc *softc;
2853         int     error;
2854
2855         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("entering cdprevent\n"));
2856
2857         softc = (struct cd_softc *)periph->softc;
2858
2859         if (((action == PR_ALLOW)
2860           && (softc->flags & CD_FLAG_DISC_LOCKED) == 0)
2861          || ((action == PR_PREVENT)
2862           && (softc->flags & CD_FLAG_DISC_LOCKED) != 0)) {
2863                 return;
2864         }
2865
2866         ccb = cdgetccb(periph, CAM_PRIORITY_NORMAL);
2867
2868         scsi_prevent(&ccb->csio,
2869                      /*retries*/ cd_retry_count,
2870                      cddone,
2871                      MSG_SIMPLE_Q_TAG,
2872                      action,
2873                      SSD_FULL_SIZE,
2874                      /* timeout */60000);
2875
2876         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
2877                         /*sense_flags*/SF_RETRY_UA|SF_NO_PRINT);
2878
2879         xpt_release_ccb(ccb);
2880
2881         if (error == 0) {
2882                 if (action == PR_ALLOW)
2883                         softc->flags &= ~CD_FLAG_DISC_LOCKED;
2884                 else
2885                         softc->flags |= CD_FLAG_DISC_LOCKED;
2886         }
2887 }
2888
2889 /*
2890  * XXX: the disk media and sector size is only really able to change
2891  * XXX: while the device is closed.
2892  */
2893 static int
2894 cdcheckmedia(struct cam_periph *periph)
2895 {
2896         struct cd_softc *softc;
2897         struct ioc_toc_header *toch;
2898         struct cd_toc_single leadout;
2899         u_int32_t size, toclen;
2900         int error, num_entries, cdindex;
2901
2902         softc = (struct cd_softc *)periph->softc;
2903
2904         cdprevent(periph, PR_PREVENT);
2905         softc->disk->d_sectorsize = 2048;
2906         softc->disk->d_mediasize = 0;
2907
2908         /*
2909          * Get the disc size and block size.  If we can't get it, we don't
2910          * have media, most likely.
2911          */
2912         if ((error = cdsize(periph, &size)) != 0) {
2913                 softc->flags &= ~(CD_FLAG_VALID_MEDIA|CD_FLAG_VALID_TOC);
2914                 cdprevent(periph, PR_ALLOW);
2915                 return (error);
2916         } else {
2917                 softc->flags |= CD_FLAG_SAW_MEDIA | CD_FLAG_VALID_MEDIA;
2918                 softc->disk->d_sectorsize = softc->params.blksize;
2919                 softc->disk->d_mediasize =
2920                     (off_t)softc->params.blksize * softc->params.disksize;
2921         }
2922
2923         /*
2924          * Now we check the table of contents.  This (currently) is only
2925          * used for the CDIOCPLAYTRACKS ioctl.  It may be used later to do
2926          * things like present a separate entry in /dev for each track,
2927          * like that acd(4) driver does.
2928          */
2929         bzero(&softc->toc, sizeof(softc->toc));
2930         toch = &softc->toc.header;
2931         /*
2932          * We will get errors here for media that doesn't have a table of
2933          * contents.  According to the MMC-3 spec: "When a Read TOC/PMA/ATIP
2934          * command is presented for a DDCD/CD-R/RW media, where the first TOC
2935          * has not been recorded (no complete session) and the Format codes
2936          * 0000b, 0001b, or 0010b are specified, this command shall be rejected
2937          * with an INVALID FIELD IN CDB.  Devices that are not capable of
2938          * reading an incomplete session on DDC/CD-R/RW media shall report
2939          * CANNOT READ MEDIUM - INCOMPATIBLE FORMAT."
2940          *
2941          * So this isn't fatal if we can't read the table of contents, it
2942          * just means that the user won't be able to issue the play tracks
2943          * ioctl, and likely lots of other stuff won't work either.  They
2944          * need to burn the CD before we can do a whole lot with it.  So
2945          * we don't print anything here if we get an error back.
2946          */
2947         error = cdreadtoc(periph, 0, 0, (u_int8_t *)toch, sizeof(*toch),
2948                           SF_NO_PRINT);
2949         /*
2950          * Errors in reading the table of contents aren't fatal, we just
2951          * won't have a valid table of contents cached.
2952          */
2953         if (error != 0) {
2954                 error = 0;
2955                 bzero(&softc->toc, sizeof(softc->toc));
2956                 goto bailout;
2957         }
2958
2959         if (softc->quirks & CD_Q_BCD_TRACKS) {
2960                 toch->starting_track = bcd2bin(toch->starting_track);
2961                 toch->ending_track = bcd2bin(toch->ending_track);
2962         }
2963
2964         /* Number of TOC entries, plus leadout */
2965         num_entries = (toch->ending_track - toch->starting_track) + 2;
2966
2967         if (num_entries <= 0)
2968                 goto bailout;
2969
2970         toclen = num_entries * sizeof(struct cd_toc_entry);
2971
2972         error = cdreadtoc(periph, CD_MSF_FORMAT, toch->starting_track,
2973                           (u_int8_t *)&softc->toc, toclen + sizeof(*toch),
2974                           SF_NO_PRINT);
2975         if (error != 0) {
2976                 error = 0;
2977                 bzero(&softc->toc, sizeof(softc->toc));
2978                 goto bailout;
2979         }
2980
2981         if (softc->quirks & CD_Q_BCD_TRACKS) {
2982                 toch->starting_track = bcd2bin(toch->starting_track);
2983                 toch->ending_track = bcd2bin(toch->ending_track);
2984         }
2985         /*
2986          * XXX KDM is this necessary?  Probably only if the drive doesn't
2987          * return leadout information with the table of contents.
2988          */
2989         cdindex = toch->starting_track + num_entries -1;
2990         if (cdindex == toch->ending_track + 1) {
2991
2992                 error = cdreadtoc(periph, CD_MSF_FORMAT, LEADOUT,
2993                                   (u_int8_t *)&leadout, sizeof(leadout),
2994                                   SF_NO_PRINT);
2995                 if (error != 0) {
2996                         error = 0;
2997                         goto bailout;
2998                 }
2999                 softc->toc.entries[cdindex - toch->starting_track] =
3000                         leadout.entry;
3001         }
3002         if (softc->quirks & CD_Q_BCD_TRACKS) {
3003                 for (cdindex = 0; cdindex < num_entries - 1; cdindex++) {
3004                         softc->toc.entries[cdindex].track =
3005                                 bcd2bin(softc->toc.entries[cdindex].track);
3006                 }
3007         }
3008
3009         softc->flags |= CD_FLAG_VALID_TOC;
3010
3011         /* If the first track is audio, correct sector size. */
3012         if ((softc->toc.entries[0].control & 4) == 0) {
3013                 softc->disk->d_sectorsize = softc->params.blksize = 2352;
3014                 softc->disk->d_mediasize =
3015                     (off_t)softc->params.blksize * softc->params.disksize;
3016         }
3017
3018 bailout:
3019
3020         /*
3021          * We unconditionally (re)set the blocksize each time the
3022          * CD device is opened.  This is because the CD can change,
3023          * and therefore the blocksize might change.
3024          * XXX problems here if some slice or partition is still
3025          * open with the old size?
3026          */
3027         if ((softc->disk->d_devstat->flags & DEVSTAT_BS_UNAVAILABLE) != 0)
3028                 softc->disk->d_devstat->flags &= ~DEVSTAT_BS_UNAVAILABLE;
3029         softc->disk->d_devstat->block_size = softc->params.blksize;
3030
3031         return (error);
3032 }
3033
3034 static int
3035 cdsize(struct cam_periph *periph, u_int32_t *size)
3036 {
3037         struct cd_softc *softc;
3038         union ccb *ccb;
3039         struct scsi_read_capacity_data *rcap_buf;
3040         int error;
3041
3042         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("entering cdsize\n"));
3043
3044         softc = (struct cd_softc *)periph->softc;
3045
3046         ccb = cdgetccb(periph, CAM_PRIORITY_NORMAL);
3047
3048         /* XXX Should be M_WAITOK */
3049         rcap_buf = malloc(sizeof(struct scsi_read_capacity_data),
3050                           M_SCSICD, M_NOWAIT | M_ZERO);
3051         if (rcap_buf == NULL)
3052                 return (ENOMEM);
3053
3054         scsi_read_capacity(&ccb->csio,
3055                            /*retries*/ cd_retry_count,
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*/CAM_RETRY_SELTO,
3063                          /*sense_flags*/SF_RETRY_UA|SF_NO_PRINT);
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         /* Make sure we got at least some block size. */
3070         if (error == 0 && softc->params.blksize == 0)
3071                 error = EIO;
3072         /*
3073          * SCSI-3 mandates that the reported blocksize shall be 2048.
3074          * Older drives sometimes report funny values, trim it down to
3075          * 2048, or other parts of the kernel will get confused.
3076          *
3077          * XXX we leave drives alone that might report 512 bytes, as
3078          * well as drives reporting more weird sizes like perhaps 4K.
3079          */
3080         if (softc->params.blksize > 2048 && softc->params.blksize <= 2352)
3081                 softc->params.blksize = 2048;
3082
3083         free(rcap_buf, M_SCSICD);
3084         *size = softc->params.disksize;
3085
3086         return (error);
3087
3088 }
3089
3090 static int
3091 cd6byteworkaround(union ccb *ccb)
3092 {
3093         u_int8_t *cdb;
3094         struct cam_periph *periph;
3095         struct cd_softc *softc;
3096         struct cd_mode_params *params;
3097         int frozen, found;
3098
3099         periph = xpt_path_periph(ccb->ccb_h.path);
3100         softc = (struct cd_softc *)periph->softc;
3101
3102         cdb = ccb->csio.cdb_io.cdb_bytes;
3103
3104         if ((ccb->ccb_h.flags & CAM_CDB_POINTER)
3105          || ((cdb[0] != MODE_SENSE_6)
3106           && (cdb[0] != MODE_SELECT_6)))
3107                 return (0);
3108
3109         /*
3110          * Because there is no convenient place to stash the overall
3111          * cd_mode_params structure pointer, we have to grab it like this.
3112          * This means that ALL MODE_SENSE and MODE_SELECT requests in the
3113          * cd(4) driver MUST go through cdgetmode() and cdsetmode()!
3114          *
3115          * XXX It would be nice if, at some point, we could increase the
3116          * number of available peripheral private pointers.  Both pointers
3117          * are currently used in most every peripheral driver.
3118          */
3119         found = 0;
3120
3121         STAILQ_FOREACH(params, &softc->mode_queue, links) {
3122                 if (params->mode_buf == ccb->csio.data_ptr) {
3123                         found = 1;
3124                         break;
3125                 }
3126         }
3127
3128         /*
3129          * This shouldn't happen.  All mode sense and mode select
3130          * operations in the cd(4) driver MUST go through cdgetmode() and
3131          * cdsetmode()!
3132          */
3133         if (found == 0) {
3134                 xpt_print(periph->path,
3135                     "mode buffer not found in mode queue!\n");
3136                 return (0);
3137         }
3138
3139         params->cdb_size = 10;
3140         softc->minimum_command_size = 10;
3141         xpt_print(ccb->ccb_h.path,
3142             "%s(6) failed, increasing minimum CDB size to 10 bytes\n",
3143             (cdb[0] == MODE_SENSE_6) ? "MODE_SENSE" : "MODE_SELECT");
3144
3145         if (cdb[0] == MODE_SENSE_6) {
3146                 struct scsi_mode_sense_10 ms10;
3147                 struct scsi_mode_sense_6 *ms6;
3148                 int len;
3149
3150                 ms6 = (struct scsi_mode_sense_6 *)cdb;
3151
3152                 bzero(&ms10, sizeof(ms10));
3153                 ms10.opcode = MODE_SENSE_10;
3154                 ms10.byte2 = ms6->byte2;
3155                 ms10.page = ms6->page;
3156
3157                 /*
3158                  * 10 byte mode header, block descriptor,
3159                  * sizeof(union cd_pages)
3160                  */
3161                 len = sizeof(struct cd_mode_data_10);
3162                 ccb->csio.dxfer_len = len;
3163
3164                 scsi_ulto2b(len, ms10.length);
3165                 ms10.control = ms6->control;
3166                 bcopy(&ms10, cdb, 10);
3167                 ccb->csio.cdb_len = 10;
3168         } else {
3169                 struct scsi_mode_select_10 ms10;
3170                 struct scsi_mode_select_6 *ms6;
3171                 struct scsi_mode_header_6 *header6;
3172                 struct scsi_mode_header_10 *header10;
3173                 struct scsi_mode_page_header *page_header;
3174                 int blk_desc_len, page_num, page_size, len;
3175
3176                 ms6 = (struct scsi_mode_select_6 *)cdb;
3177
3178                 bzero(&ms10, sizeof(ms10));
3179                 ms10.opcode = MODE_SELECT_10;
3180                 ms10.byte2 = ms6->byte2;
3181
3182                 header6 = (struct scsi_mode_header_6 *)params->mode_buf;
3183                 header10 = (struct scsi_mode_header_10 *)params->mode_buf;
3184
3185                 page_header = find_mode_page_6(header6);
3186                 page_num = page_header->page_code;
3187
3188                 blk_desc_len = header6->blk_desc_len;
3189
3190                 page_size = cdgetpagesize(page_num);
3191
3192                 if (page_size != (page_header->page_length +
3193                     sizeof(*page_header)))
3194                         page_size = page_header->page_length +
3195                                 sizeof(*page_header);
3196
3197                 len = sizeof(*header10) + blk_desc_len + page_size;
3198
3199                 len = min(params->alloc_len, len);
3200
3201                 /*
3202                  * Since the 6 byte parameter header is shorter than the 10
3203                  * byte parameter header, we need to copy the actual mode
3204                  * page data, and the block descriptor, if any, so things wind
3205                  * up in the right place.  The regions will overlap, but
3206                  * bcopy() does the right thing.
3207                  */
3208                 bcopy(params->mode_buf + sizeof(*header6),
3209                       params->mode_buf + sizeof(*header10),
3210                       len - sizeof(*header10));
3211
3212                 /* Make sure these fields are set correctly. */
3213                 scsi_ulto2b(0, header10->data_length);
3214                 header10->medium_type = 0;
3215                 scsi_ulto2b(blk_desc_len, header10->blk_desc_len);
3216
3217                 ccb->csio.dxfer_len = len;
3218
3219                 scsi_ulto2b(len, ms10.length);
3220                 ms10.control = ms6->control;
3221                 bcopy(&ms10, cdb, 10);
3222                 ccb->csio.cdb_len = 10;
3223         }
3224
3225         frozen = (ccb->ccb_h.status & CAM_DEV_QFRZN) != 0;
3226         ccb->ccb_h.status = CAM_REQUEUE_REQ;
3227         xpt_action(ccb);
3228         if (frozen) {
3229                 cam_release_devq(ccb->ccb_h.path,
3230                                  /*relsim_flags*/0,
3231                                  /*openings*/0,
3232                                  /*timeout*/0,
3233                                  /*getcount_only*/0);
3234         }
3235
3236         return (ERESTART);
3237 }
3238
3239 static int
3240 cderror(union ccb *ccb, u_int32_t cam_flags, u_int32_t sense_flags)
3241 {
3242         struct cd_softc *softc;
3243         struct cam_periph *periph;
3244         int error, error_code, sense_key, asc, ascq;
3245
3246         periph = xpt_path_periph(ccb->ccb_h.path);
3247         softc = (struct cd_softc *)periph->softc;
3248
3249         error = 0;
3250
3251         /*
3252          * We use a status of CAM_REQ_INVALID as shorthand -- if a 6 byte
3253          * CDB comes back with this particular error, try transforming it
3254          * into the 10 byte version.
3255          */
3256         if ((ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_INVALID) {
3257                 error = cd6byteworkaround(ccb);
3258         } else if (scsi_extract_sense_ccb(ccb,
3259             &error_code, &sense_key, &asc, &ascq)) {
3260                 if (sense_key == SSD_KEY_ILLEGAL_REQUEST)
3261                         error = cd6byteworkaround(ccb);
3262                 else if (sense_key == SSD_KEY_UNIT_ATTENTION &&
3263                     asc == 0x28 && ascq == 0x00)
3264                         disk_media_changed(softc->disk, M_NOWAIT);
3265                 else if (sense_key == SSD_KEY_NOT_READY &&
3266                     asc == 0x3a && (softc->flags & CD_FLAG_SAW_MEDIA)) {
3267                         softc->flags &= ~CD_FLAG_SAW_MEDIA;
3268                         disk_media_gone(softc->disk, M_NOWAIT);
3269                 }
3270         }
3271
3272         if (error == ERESTART)
3273                 return (error);
3274
3275         /*
3276          * XXX
3277          * Until we have a better way of doing pack validation,
3278          * don't treat UAs as errors.
3279          */
3280         sense_flags |= SF_RETRY_UA;
3281         return (cam_periph_error(ccb, cam_flags, sense_flags,
3282                                  &softc->saved_ccb));
3283 }
3284
3285 static void
3286 cdmediapoll(void *arg)
3287 {
3288         struct cam_periph *periph = arg;
3289         struct cd_softc *softc = periph->softc;
3290
3291         if (softc->flags & CD_FLAG_CHANGER)
3292                 return;
3293
3294         if (softc->state == CD_STATE_NORMAL && !softc->tur &&
3295             softc->outstanding_cmds == 0) {
3296                 if (cam_periph_acquire(periph) == CAM_REQ_CMP) {
3297                         softc->tur = 1;
3298                         xpt_schedule(periph, CAM_PRIORITY_NORMAL);
3299                 }
3300         }
3301         /* Queue us up again */
3302         if (cd_poll_period != 0)
3303                 callout_schedule(&softc->mediapoll_c, cd_poll_period * hz);
3304 }
3305
3306 /*
3307  * Read table of contents
3308  */
3309 static int
3310 cdreadtoc(struct cam_periph *periph, u_int32_t mode, u_int32_t start,
3311           u_int8_t *data, u_int32_t len, u_int32_t sense_flags)
3312 {
3313         struct scsi_read_toc *scsi_cmd;
3314         u_int32_t ntoc;
3315         struct ccb_scsiio *csio;
3316         union ccb *ccb;
3317         int error;
3318
3319         ntoc = len;
3320         error = 0;
3321
3322         ccb = cdgetccb(periph, CAM_PRIORITY_NORMAL);
3323
3324         csio = &ccb->csio;
3325
3326         cam_fill_csio(csio,
3327                       /* retries */ cd_retry_count,
3328                       /* cbfcnp */ cddone,
3329                       /* flags */ CAM_DIR_IN,
3330                       /* tag_action */ MSG_SIMPLE_Q_TAG,
3331                       /* data_ptr */ data,
3332                       /* dxfer_len */ len,
3333                       /* sense_len */ SSD_FULL_SIZE,
3334                       sizeof(struct scsi_read_toc),
3335                       /* timeout */ 50000);
3336
3337         scsi_cmd = (struct scsi_read_toc *)&csio->cdb_io.cdb_bytes;
3338         bzero (scsi_cmd, sizeof(*scsi_cmd));
3339
3340         if (mode == CD_MSF_FORMAT)
3341                 scsi_cmd->byte2 |= CD_MSF;
3342         scsi_cmd->from_track = start;
3343         /* scsi_ulto2b(ntoc, (u_int8_t *)scsi_cmd->data_len); */
3344         scsi_cmd->data_len[0] = (ntoc) >> 8;
3345         scsi_cmd->data_len[1] = (ntoc) & 0xff;
3346
3347         scsi_cmd->op_code = READ_TOC;
3348
3349         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3350                          /*sense_flags*/SF_RETRY_UA | sense_flags);
3351
3352         xpt_release_ccb(ccb);
3353
3354         return(error);
3355 }
3356
3357 static int
3358 cdreadsubchannel(struct cam_periph *periph, u_int32_t mode,
3359                  u_int32_t format, int track,
3360                  struct cd_sub_channel_info *data, u_int32_t len)
3361 {
3362         struct scsi_read_subchannel *scsi_cmd;
3363         struct ccb_scsiio *csio;
3364         union ccb *ccb;
3365         int error;
3366
3367         error = 0;
3368
3369         ccb = cdgetccb(periph, CAM_PRIORITY_NORMAL);
3370
3371         csio = &ccb->csio;
3372
3373         cam_fill_csio(csio,
3374                       /* retries */ cd_retry_count,
3375                       /* cbfcnp */ cddone,
3376                       /* flags */ CAM_DIR_IN,
3377                       /* tag_action */ MSG_SIMPLE_Q_TAG,
3378                       /* data_ptr */ (u_int8_t *)data,
3379                       /* dxfer_len */ len,
3380                       /* sense_len */ SSD_FULL_SIZE,
3381                       sizeof(struct scsi_read_subchannel),
3382                       /* timeout */ 50000);
3383
3384         scsi_cmd = (struct scsi_read_subchannel *)&csio->cdb_io.cdb_bytes;
3385         bzero (scsi_cmd, sizeof(*scsi_cmd));
3386
3387         scsi_cmd->op_code = READ_SUBCHANNEL;
3388         if (mode == CD_MSF_FORMAT)
3389                 scsi_cmd->byte1 |= CD_MSF;
3390         scsi_cmd->byte2 = SRS_SUBQ;
3391         scsi_cmd->subchan_format = format;
3392         scsi_cmd->track = track;
3393         scsi_ulto2b(len, (u_int8_t *)scsi_cmd->data_len);
3394         scsi_cmd->control = 0;
3395
3396         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3397                          /*sense_flags*/SF_RETRY_UA);
3398
3399         xpt_release_ccb(ccb);
3400
3401         return(error);
3402 }
3403
3404
3405 /*
3406  * All MODE_SENSE requests in the cd(4) driver MUST go through this
3407  * routine.  See comments in cd6byteworkaround() for details.
3408  */
3409 static int
3410 cdgetmode(struct cam_periph *periph, struct cd_mode_params *data,
3411           u_int32_t page)
3412 {
3413         struct ccb_scsiio *csio;
3414         struct cd_softc *softc;
3415         union ccb *ccb;
3416         int param_len;
3417         int error;
3418
3419         softc = (struct cd_softc *)periph->softc;
3420
3421         ccb = cdgetccb(periph, CAM_PRIORITY_NORMAL);
3422
3423         csio = &ccb->csio;
3424
3425         data->cdb_size = softc->minimum_command_size;
3426         if (data->cdb_size < 10)
3427                 param_len = sizeof(struct cd_mode_data);
3428         else
3429                 param_len = sizeof(struct cd_mode_data_10);
3430
3431         /* Don't say we've got more room than we actually allocated */
3432         param_len = min(param_len, data->alloc_len);
3433
3434         scsi_mode_sense_len(csio,
3435                             /* retries */ cd_retry_count,
3436                             /* cbfcnp */ cddone,
3437                             /* tag_action */ MSG_SIMPLE_Q_TAG,
3438                             /* dbd */ 0,
3439                             /* page_code */ SMS_PAGE_CTRL_CURRENT,
3440                             /* page */ page,
3441                             /* param_buf */ data->mode_buf,
3442                             /* param_len */ param_len,
3443                             /* minimum_cmd_size */ softc->minimum_command_size,
3444                             /* sense_len */ SSD_FULL_SIZE,
3445                             /* timeout */ 50000);
3446
3447         /*
3448          * It would be nice not to have to do this, but there's no
3449          * available pointer in the CCB that would allow us to stuff the
3450          * mode params structure in there and retrieve it in
3451          * cd6byteworkaround(), so we can set the cdb size.  The cdb size
3452          * lets the caller know what CDB size we ended up using, so they
3453          * can find the actual mode page offset.
3454          */
3455         STAILQ_INSERT_TAIL(&softc->mode_queue, data, links);
3456
3457         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3458                          /*sense_flags*/SF_RETRY_UA);
3459
3460         xpt_release_ccb(ccb);
3461
3462         STAILQ_REMOVE(&softc->mode_queue, data, cd_mode_params, links);
3463
3464         /*
3465          * This is a bit of belt-and-suspenders checking, but if we run
3466          * into a situation where the target sends back multiple block
3467          * descriptors, we might not have enough space in the buffer to
3468          * see the whole mode page.  Better to return an error than
3469          * potentially access memory beyond our malloced region.
3470          */
3471         if (error == 0) {
3472                 u_int32_t data_len;
3473
3474                 if (data->cdb_size == 10) {
3475                         struct scsi_mode_header_10 *hdr10;
3476
3477                         hdr10 = (struct scsi_mode_header_10 *)data->mode_buf;
3478                         data_len = scsi_2btoul(hdr10->data_length);
3479                         data_len += sizeof(hdr10->data_length);
3480                 } else {
3481                         struct scsi_mode_header_6 *hdr6;
3482
3483                         hdr6 = (struct scsi_mode_header_6 *)data->mode_buf;
3484                         data_len = hdr6->data_length;
3485                         data_len += sizeof(hdr6->data_length);
3486                 }
3487
3488                 /*
3489                  * Complain if there is more mode data available than we
3490                  * allocated space for.  This could potentially happen if
3491                  * we miscalculated the page length for some reason, if the
3492                  * drive returns multiple block descriptors, or if it sets
3493                  * the data length incorrectly.
3494                  */
3495                 if (data_len > data->alloc_len) {
3496                         xpt_print(periph->path, "allocated modepage %d length "
3497                             "%d < returned length %d\n", page, data->alloc_len,
3498                             data_len);
3499                         error = ENOSPC;
3500                 }
3501         }
3502         return (error);
3503 }
3504
3505 /*
3506  * All MODE_SELECT requests in the cd(4) driver MUST go through this
3507  * routine.  See comments in cd6byteworkaround() for details.
3508  */
3509 static int
3510 cdsetmode(struct cam_periph *periph, struct cd_mode_params *data)
3511 {
3512         struct ccb_scsiio *csio;
3513         struct cd_softc *softc;
3514         union ccb *ccb;
3515         int cdb_size, param_len;
3516         int error;
3517
3518         softc = (struct cd_softc *)periph->softc;
3519
3520         ccb = cdgetccb(periph, CAM_PRIORITY_NORMAL);
3521
3522         csio = &ccb->csio;
3523
3524         error = 0;
3525
3526         /*
3527          * If the data is formatted for the 10 byte version of the mode
3528          * select parameter list, we need to use the 10 byte CDB.
3529          * Otherwise, we use whatever the stored minimum command size.
3530          */
3531         if (data->cdb_size == 10)
3532                 cdb_size = data->cdb_size;
3533         else
3534                 cdb_size = softc->minimum_command_size;
3535
3536         if (cdb_size >= 10) {
3537                 struct scsi_mode_header_10 *mode_header;
3538                 u_int32_t data_len;
3539
3540                 mode_header = (struct scsi_mode_header_10 *)data->mode_buf;
3541
3542                 data_len = scsi_2btoul(mode_header->data_length);
3543
3544                 scsi_ulto2b(0, mode_header->data_length);
3545                 /*
3546                  * SONY drives do not allow a mode select with a medium_type
3547                  * value that has just been returned by a mode sense; use a
3548                  * medium_type of 0 (Default) instead.
3549                  */
3550                 mode_header->medium_type = 0;
3551
3552                 /*
3553                  * Pass back whatever the drive passed to us, plus the size
3554                  * of the data length field.
3555                  */
3556                 param_len = data_len + sizeof(mode_header->data_length);
3557
3558         } else {
3559                 struct scsi_mode_header_6 *mode_header;
3560
3561                 mode_header = (struct scsi_mode_header_6 *)data->mode_buf;
3562
3563                 param_len = mode_header->data_length + 1;
3564
3565                 mode_header->data_length = 0;
3566                 /*
3567                  * SONY drives do not allow a mode select with a medium_type
3568                  * value that has just been returned by a mode sense; use a
3569                  * medium_type of 0 (Default) instead.
3570                  */
3571                 mode_header->medium_type = 0;
3572         }
3573
3574         /* Don't say we've got more room than we actually allocated */
3575         param_len = min(param_len, data->alloc_len);
3576
3577         scsi_mode_select_len(csio,
3578                              /* retries */ cd_retry_count,
3579                              /* cbfcnp */ cddone,
3580                              /* tag_action */ MSG_SIMPLE_Q_TAG,
3581                              /* scsi_page_fmt */ 1,
3582                              /* save_pages */ 0,
3583                              /* param_buf */ data->mode_buf,
3584                              /* param_len */ param_len,
3585                              /* minimum_cmd_size */ cdb_size,
3586                              /* sense_len */ SSD_FULL_SIZE,
3587                              /* timeout */ 50000);
3588
3589         /* See comments in cdgetmode() and cd6byteworkaround(). */
3590         STAILQ_INSERT_TAIL(&softc->mode_queue, data, links);
3591
3592         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3593                          /*sense_flags*/SF_RETRY_UA);
3594
3595         xpt_release_ccb(ccb);
3596
3597         STAILQ_REMOVE(&softc->mode_queue, data, cd_mode_params, links);
3598
3599         return (error);
3600 }
3601
3602
3603 static int
3604 cdplay(struct cam_periph *periph, u_int32_t blk, u_int32_t len)
3605 {
3606         struct ccb_scsiio *csio;
3607         union ccb *ccb;
3608         int error;
3609         u_int8_t cdb_len;
3610
3611         error = 0;
3612         ccb = cdgetccb(periph, CAM_PRIORITY_NORMAL);
3613         csio = &ccb->csio;
3614         /*
3615          * Use the smallest possible command to perform the operation.
3616          */
3617         if ((len & 0xffff0000) == 0) {
3618                 /*
3619                  * We can fit in a 10 byte cdb.
3620                  */
3621                 struct scsi_play_10 *scsi_cmd;
3622
3623                 scsi_cmd = (struct scsi_play_10 *)&csio->cdb_io.cdb_bytes;
3624                 bzero (scsi_cmd, sizeof(*scsi_cmd));
3625                 scsi_cmd->op_code = PLAY_10;
3626                 scsi_ulto4b(blk, (u_int8_t *)scsi_cmd->blk_addr);
3627                 scsi_ulto2b(len, (u_int8_t *)scsi_cmd->xfer_len);
3628                 cdb_len = sizeof(*scsi_cmd);
3629         } else  {
3630                 struct scsi_play_12 *scsi_cmd;
3631
3632                 scsi_cmd = (struct scsi_play_12 *)&csio->cdb_io.cdb_bytes;
3633                 bzero (scsi_cmd, sizeof(*scsi_cmd));
3634                 scsi_cmd->op_code = PLAY_12;
3635                 scsi_ulto4b(blk, (u_int8_t *)scsi_cmd->blk_addr);
3636                 scsi_ulto4b(len, (u_int8_t *)scsi_cmd->xfer_len);
3637                 cdb_len = sizeof(*scsi_cmd);
3638         }
3639         cam_fill_csio(csio,
3640                       /*retries*/ cd_retry_count,
3641                       cddone,
3642                       /*flags*/CAM_DIR_NONE,
3643                       MSG_SIMPLE_Q_TAG,
3644                       /*dataptr*/NULL,
3645                       /*datalen*/0,
3646                       /*sense_len*/SSD_FULL_SIZE,
3647                       cdb_len,
3648                       /*timeout*/50 * 1000);
3649
3650         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3651                          /*sense_flags*/SF_RETRY_UA);
3652
3653         xpt_release_ccb(ccb);
3654
3655         return(error);
3656 }
3657
3658 static int
3659 cdplaymsf(struct cam_periph *periph, u_int32_t startm, u_int32_t starts,
3660           u_int32_t startf, u_int32_t endm, u_int32_t ends, u_int32_t endf)
3661 {
3662         struct scsi_play_msf *scsi_cmd;
3663         struct ccb_scsiio *csio;
3664         union ccb *ccb;
3665         int error;
3666
3667         error = 0;
3668
3669         ccb = cdgetccb(periph, CAM_PRIORITY_NORMAL);
3670
3671         csio = &ccb->csio;
3672
3673         cam_fill_csio(csio,
3674                       /* retries */ cd_retry_count,
3675                       /* cbfcnp */ cddone,
3676                       /* flags */ CAM_DIR_NONE,
3677                       /* tag_action */ MSG_SIMPLE_Q_TAG,
3678                       /* data_ptr */ NULL,
3679                       /* dxfer_len */ 0,
3680                       /* sense_len */ SSD_FULL_SIZE,
3681                       sizeof(struct scsi_play_msf),
3682                       /* timeout */ 50000);
3683
3684         scsi_cmd = (struct scsi_play_msf *)&csio->cdb_io.cdb_bytes;
3685         bzero (scsi_cmd, sizeof(*scsi_cmd));
3686
3687         scsi_cmd->op_code = PLAY_MSF;
3688         scsi_cmd->start_m = startm;
3689         scsi_cmd->start_s = starts;
3690         scsi_cmd->start_f = startf;
3691         scsi_cmd->end_m = endm;
3692         scsi_cmd->end_s = ends;
3693         scsi_cmd->end_f = endf;
3694
3695         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3696                          /*sense_flags*/SF_RETRY_UA);
3697
3698         xpt_release_ccb(ccb);
3699
3700         return(error);
3701 }
3702
3703
3704 static int
3705 cdplaytracks(struct cam_periph *periph, u_int32_t strack, u_int32_t sindex,
3706              u_int32_t etrack, u_int32_t eindex)
3707 {
3708         struct scsi_play_track *scsi_cmd;
3709         struct ccb_scsiio *csio;
3710         union ccb *ccb;
3711         int error;
3712
3713         error = 0;
3714
3715         ccb = cdgetccb(periph, CAM_PRIORITY_NORMAL);
3716
3717         csio = &ccb->csio;
3718
3719         cam_fill_csio(csio,
3720                       /* retries */ cd_retry_count,
3721                       /* cbfcnp */ cddone,
3722                       /* flags */ CAM_DIR_NONE,
3723                       /* tag_action */ MSG_SIMPLE_Q_TAG,
3724                       /* data_ptr */ NULL,
3725                       /* dxfer_len */ 0,
3726                       /* sense_len */ SSD_FULL_SIZE,
3727                       sizeof(struct scsi_play_track),
3728                       /* timeout */ 50000);
3729
3730         scsi_cmd = (struct scsi_play_track *)&csio->cdb_io.cdb_bytes;
3731         bzero (scsi_cmd, sizeof(*scsi_cmd));
3732
3733         scsi_cmd->op_code = PLAY_TRACK;
3734         scsi_cmd->start_track = strack;
3735         scsi_cmd->start_index = sindex;
3736         scsi_cmd->end_track = etrack;
3737         scsi_cmd->end_index = eindex;
3738
3739         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3740                          /*sense_flags*/SF_RETRY_UA);
3741
3742         xpt_release_ccb(ccb);
3743
3744         return(error);
3745 }
3746
3747 static int
3748 cdpause(struct cam_periph *periph, u_int32_t go)
3749 {
3750         struct scsi_pause *scsi_cmd;
3751         struct ccb_scsiio *csio;
3752         union ccb *ccb;
3753         int error;
3754
3755         error = 0;
3756
3757         ccb = cdgetccb(periph, CAM_PRIORITY_NORMAL);
3758
3759         csio = &ccb->csio;
3760
3761         cam_fill_csio(csio,
3762                       /* retries */ cd_retry_count,
3763                       /* cbfcnp */ cddone,
3764                       /* flags */ CAM_DIR_NONE,
3765                       /* tag_action */ MSG_SIMPLE_Q_TAG,
3766                       /* data_ptr */ NULL,
3767                       /* dxfer_len */ 0,
3768                       /* sense_len */ SSD_FULL_SIZE,
3769                       sizeof(struct scsi_pause),
3770                       /* timeout */ 50000);
3771
3772         scsi_cmd = (struct scsi_pause *)&csio->cdb_io.cdb_bytes;
3773         bzero (scsi_cmd, sizeof(*scsi_cmd));
3774
3775         scsi_cmd->op_code = PAUSE;
3776         scsi_cmd->resume = go;
3777
3778         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3779                          /*sense_flags*/SF_RETRY_UA);
3780
3781         xpt_release_ccb(ccb);
3782
3783         return(error);
3784 }
3785
3786 static int
3787 cdstartunit(struct cam_periph *periph, int load)
3788 {
3789         union ccb *ccb;
3790         int error;
3791
3792         error = 0;
3793
3794         ccb = cdgetccb(periph, CAM_PRIORITY_NORMAL);
3795
3796         scsi_start_stop(&ccb->csio,
3797                         /* retries */ cd_retry_count,
3798                         /* cbfcnp */ cddone,
3799                         /* tag_action */ MSG_SIMPLE_Q_TAG,
3800                         /* start */ TRUE,
3801                         /* load_eject */ load,
3802                         /* immediate */ FALSE,
3803                         /* sense_len */ SSD_FULL_SIZE,
3804                         /* timeout */ 50000);
3805
3806         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3807                          /*sense_flags*/SF_RETRY_UA);
3808
3809         xpt_release_ccb(ccb);
3810
3811         return(error);
3812 }
3813
3814 static int
3815 cdstopunit(struct cam_periph *periph, u_int32_t eject)
3816 {
3817         union ccb *ccb;
3818         int error;
3819
3820         error = 0;
3821
3822         ccb = cdgetccb(periph, CAM_PRIORITY_NORMAL);
3823
3824         scsi_start_stop(&ccb->csio,
3825                         /* retries */ cd_retry_count,
3826                         /* cbfcnp */ cddone,
3827                         /* tag_action */ MSG_SIMPLE_Q_TAG,
3828                         /* start */ FALSE,
3829                         /* load_eject */ eject,
3830                         /* immediate */ FALSE,
3831                         /* sense_len */ SSD_FULL_SIZE,
3832                         /* timeout */ 50000);
3833
3834         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3835                          /*sense_flags*/SF_RETRY_UA);
3836
3837         xpt_release_ccb(ccb);
3838
3839         return(error);
3840 }
3841
3842 static int
3843 cdsetspeed(struct cam_periph *periph, u_int32_t rdspeed, u_int32_t wrspeed)
3844 {
3845         struct scsi_set_speed *scsi_cmd;
3846         struct ccb_scsiio *csio;
3847         union ccb *ccb;
3848         int error;
3849
3850         error = 0;
3851         ccb = cdgetccb(periph, CAM_PRIORITY_NORMAL);
3852         csio = &ccb->csio;
3853
3854         /* Preserve old behavior: units in multiples of CDROM speed */
3855         if (rdspeed < 177)
3856                 rdspeed *= 177;
3857         if (wrspeed < 177)
3858                 wrspeed *= 177;
3859
3860         cam_fill_csio(csio,
3861                       /* retries */ cd_retry_count,
3862                       /* cbfcnp */ cddone,
3863                       /* flags */ CAM_DIR_NONE,
3864                       /* tag_action */ MSG_SIMPLE_Q_TAG,
3865                       /* data_ptr */ NULL,
3866                       /* dxfer_len */ 0,
3867                       /* sense_len */ SSD_FULL_SIZE,
3868                       sizeof(struct scsi_set_speed),
3869                       /* timeout */ 50000);
3870
3871         scsi_cmd = (struct scsi_set_speed *)&csio->cdb_io.cdb_bytes;
3872         bzero(scsi_cmd, sizeof(*scsi_cmd));
3873
3874         scsi_cmd->opcode = SET_CD_SPEED;
3875         scsi_ulto2b(rdspeed, scsi_cmd->readspeed);
3876         scsi_ulto2b(wrspeed, scsi_cmd->writespeed);
3877
3878         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3879                          /*sense_flags*/SF_RETRY_UA);
3880
3881         xpt_release_ccb(ccb);
3882
3883         return(error);
3884 }
3885
3886 static int
3887 cdreportkey(struct cam_periph *periph, struct dvd_authinfo *authinfo)
3888 {
3889         union ccb *ccb;
3890         u_int8_t *databuf;
3891         u_int32_t lba;
3892         int error;
3893         int length;
3894
3895         error = 0;
3896         databuf = NULL;
3897         lba = 0;
3898
3899         switch (authinfo->format) {
3900         case DVD_REPORT_AGID:
3901                 length = sizeof(struct scsi_report_key_data_agid);
3902                 break;
3903         case DVD_REPORT_CHALLENGE:
3904                 length = sizeof(struct scsi_report_key_data_challenge);
3905                 break;
3906         case DVD_REPORT_KEY1:
3907                 length = sizeof(struct scsi_report_key_data_key1_key2);
3908                 break;
3909         case DVD_REPORT_TITLE_KEY:
3910                 length = sizeof(struct scsi_report_key_data_title);
3911                 /* The lba field is only set for the title key */
3912                 lba = authinfo->lba;
3913                 break;
3914         case DVD_REPORT_ASF:
3915                 length = sizeof(struct scsi_report_key_data_asf);
3916                 break;
3917         case DVD_REPORT_RPC:
3918                 length = sizeof(struct scsi_report_key_data_rpc);
3919                 break;
3920         case DVD_INVALIDATE_AGID:
3921                 length = 0;
3922                 break;
3923         default:
3924                 return (EINVAL);
3925         }
3926
3927         if (length != 0) {
3928                 databuf = malloc(length, M_DEVBUF, M_WAITOK | M_ZERO);
3929         } else
3930                 databuf = NULL;
3931
3932         cam_periph_lock(periph);
3933         ccb = cdgetccb(periph, CAM_PRIORITY_NORMAL);
3934
3935         scsi_report_key(&ccb->csio,
3936                         /* retries */ cd_retry_count,
3937                         /* cbfcnp */ cddone,
3938                         /* tag_action */ MSG_SIMPLE_Q_TAG,
3939                         /* lba */ lba,
3940                         /* agid */ authinfo->agid,
3941                         /* key_format */ authinfo->format,
3942                         /* data_ptr */ databuf,
3943                         /* dxfer_len */ length,
3944                         /* sense_len */ SSD_FULL_SIZE,
3945                         /* timeout */ 50000);
3946
3947         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3948                          /*sense_flags*/SF_RETRY_UA);
3949
3950         if (error != 0)
3951                 goto bailout;
3952
3953         if (ccb->csio.resid != 0) {
3954                 xpt_print(periph->path, "warning, residual for report key "
3955                     "command is %d\n", ccb->csio.resid);
3956         }
3957
3958         switch(authinfo->format) {
3959         case DVD_REPORT_AGID: {
3960                 struct scsi_report_key_data_agid *agid_data;
3961
3962                 agid_data = (struct scsi_report_key_data_agid *)databuf;
3963
3964                 authinfo->agid = (agid_data->agid & RKD_AGID_MASK) >>
3965                         RKD_AGID_SHIFT;
3966                 break;
3967         }
3968         case DVD_REPORT_CHALLENGE: {
3969                 struct scsi_report_key_data_challenge *chal_data;
3970
3971                 chal_data = (struct scsi_report_key_data_challenge *)databuf;
3972
3973                 bcopy(chal_data->challenge_key, authinfo->keychal,
3974                       min(sizeof(chal_data->challenge_key),
3975                           sizeof(authinfo->keychal)));
3976                 break;
3977         }
3978         case DVD_REPORT_KEY1: {
3979                 struct scsi_report_key_data_key1_key2 *key1_data;
3980
3981                 key1_data = (struct scsi_report_key_data_key1_key2 *)databuf;
3982
3983                 bcopy(key1_data->key1, authinfo->keychal,
3984                       min(sizeof(key1_data->key1), sizeof(authinfo->keychal)));
3985                 break;
3986         }
3987         case DVD_REPORT_TITLE_KEY: {
3988                 struct scsi_report_key_data_title *title_data;
3989
3990                 title_data = (struct scsi_report_key_data_title *)databuf;
3991
3992                 authinfo->cpm = (title_data->byte0 & RKD_TITLE_CPM) >>
3993                         RKD_TITLE_CPM_SHIFT;
3994                 authinfo->cp_sec = (title_data->byte0 & RKD_TITLE_CP_SEC) >>
3995                         RKD_TITLE_CP_SEC_SHIFT;
3996                 authinfo->cgms = (title_data->byte0 & RKD_TITLE_CMGS_MASK) >>
3997                         RKD_TITLE_CMGS_SHIFT;
3998                 bcopy(title_data->title_key, authinfo->keychal,
3999                       min(sizeof(title_data->title_key),
4000                           sizeof(authinfo->keychal)));
4001                 break;
4002         }
4003         case DVD_REPORT_ASF: {
4004                 struct scsi_report_key_data_asf *asf_data;
4005
4006                 asf_data = (struct scsi_report_key_data_asf *)databuf;
4007
4008                 authinfo->asf = asf_data->success & RKD_ASF_SUCCESS;
4009                 break;
4010         }
4011         case DVD_REPORT_RPC: {
4012                 struct scsi_report_key_data_rpc *rpc_data;
4013
4014                 rpc_data = (struct scsi_report_key_data_rpc *)databuf;
4015
4016                 authinfo->reg_type = (rpc_data->byte4 & RKD_RPC_TYPE_MASK) >>
4017                         RKD_RPC_TYPE_SHIFT;
4018                 authinfo->vend_rsts =
4019                         (rpc_data->byte4 & RKD_RPC_VENDOR_RESET_MASK) >>
4020                         RKD_RPC_VENDOR_RESET_SHIFT;
4021                 authinfo->user_rsts = rpc_data->byte4 & RKD_RPC_USER_RESET_MASK;
4022                 authinfo->region = rpc_data->region_mask;
4023                 authinfo->rpc_scheme = rpc_data->rpc_scheme1;
4024                 break;
4025         }
4026         case DVD_INVALIDATE_AGID:
4027                 break;
4028         default:
4029                 /* This should be impossible, since we checked above */
4030                 error = EINVAL;
4031                 goto bailout;
4032                 break; /* NOTREACHED */
4033         }
4034
4035 bailout:
4036         xpt_release_ccb(ccb);
4037         cam_periph_unlock(periph);
4038
4039         if (databuf != NULL)
4040                 free(databuf, M_DEVBUF);
4041
4042         return(error);
4043 }
4044
4045 static int
4046 cdsendkey(struct cam_periph *periph, struct dvd_authinfo *authinfo)
4047 {
4048         union ccb *ccb;
4049         u_int8_t *databuf;
4050         int length;
4051         int error;
4052
4053         error = 0;
4054         databuf = NULL;
4055
4056         switch(authinfo->format) {
4057         case DVD_SEND_CHALLENGE: {
4058                 struct scsi_report_key_data_challenge *challenge_data;
4059
4060                 length = sizeof(*challenge_data);
4061
4062                 challenge_data = malloc(length, M_DEVBUF, M_WAITOK | M_ZERO);
4063
4064                 databuf = (u_int8_t *)challenge_data;
4065
4066                 scsi_ulto2b(length - sizeof(challenge_data->data_len),
4067                             challenge_data->data_len);
4068
4069                 bcopy(authinfo->keychal, challenge_data->challenge_key,
4070                       min(sizeof(authinfo->keychal),
4071                           sizeof(challenge_data->challenge_key)));
4072                 break;
4073         }
4074         case DVD_SEND_KEY2: {
4075                 struct scsi_report_key_data_key1_key2 *key2_data;
4076
4077                 length = sizeof(*key2_data);
4078
4079                 key2_data = malloc(length, M_DEVBUF, M_WAITOK | M_ZERO);
4080
4081                 databuf = (u_int8_t *)key2_data;
4082
4083                 scsi_ulto2b(length - sizeof(key2_data->data_len),
4084                             key2_data->data_len);
4085
4086                 bcopy(authinfo->keychal, key2_data->key1,
4087                       min(sizeof(authinfo->keychal), sizeof(key2_data->key1)));
4088
4089                 break;
4090         }
4091         case DVD_SEND_RPC: {
4092                 struct scsi_send_key_data_rpc *rpc_data;
4093
4094                 length = sizeof(*rpc_data);
4095
4096                 rpc_data = malloc(length, M_DEVBUF, M_WAITOK | M_ZERO);
4097
4098                 databuf = (u_int8_t *)rpc_data;
4099
4100                 scsi_ulto2b(length - sizeof(rpc_data->data_len),
4101                             rpc_data->data_len);
4102
4103                 rpc_data->region_code = authinfo->region;
4104                 break;
4105         }
4106         default:
4107                 return (EINVAL);
4108         }
4109
4110         cam_periph_lock(periph);
4111         ccb = cdgetccb(periph, CAM_PRIORITY_NORMAL);
4112
4113         scsi_send_key(&ccb->csio,
4114                       /* retries */ cd_retry_count,
4115                       /* cbfcnp */ cddone,
4116                       /* tag_action */ MSG_SIMPLE_Q_TAG,
4117                       /* agid */ authinfo->agid,
4118                       /* key_format */ authinfo->format,
4119                       /* data_ptr */ databuf,
4120                       /* dxfer_len */ length,
4121                       /* sense_len */ SSD_FULL_SIZE,
4122                       /* timeout */ 50000);
4123
4124         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
4125                          /*sense_flags*/SF_RETRY_UA);
4126
4127         xpt_release_ccb(ccb);
4128         cam_periph_unlock(periph);
4129
4130         if (databuf != NULL)
4131                 free(databuf, M_DEVBUF);
4132
4133         return(error);
4134 }
4135
4136 static int
4137 cdreaddvdstructure(struct cam_periph *periph, struct dvd_struct *dvdstruct)
4138 {
4139         union ccb *ccb;
4140         u_int8_t *databuf;
4141         u_int32_t address;
4142         int error;
4143         int length;
4144
4145         error = 0;
4146         databuf = NULL;
4147         /* The address is reserved for many of the formats */
4148         address = 0;
4149
4150         switch(dvdstruct->format) {
4151         case DVD_STRUCT_PHYSICAL:
4152                 length = sizeof(struct scsi_read_dvd_struct_data_physical);
4153                 break;
4154         case DVD_STRUCT_COPYRIGHT:
4155                 length = sizeof(struct scsi_read_dvd_struct_data_copyright);
4156                 break;
4157         case DVD_STRUCT_DISCKEY:
4158                 length = sizeof(struct scsi_read_dvd_struct_data_disc_key);
4159                 break;
4160         case DVD_STRUCT_BCA:
4161                 length = sizeof(struct scsi_read_dvd_struct_data_bca);
4162                 break;
4163         case DVD_STRUCT_MANUFACT:
4164                 length = sizeof(struct scsi_read_dvd_struct_data_manufacturer);
4165                 break;
4166         case DVD_STRUCT_CMI:
4167                 return (ENODEV);
4168         case DVD_STRUCT_PROTDISCID:
4169                 length = sizeof(struct scsi_read_dvd_struct_data_prot_discid);
4170                 break;
4171         case DVD_STRUCT_DISCKEYBLOCK:
4172                 length = sizeof(struct scsi_read_dvd_struct_data_disc_key_blk);
4173                 break;
4174         case DVD_STRUCT_DDS:
4175                 length = sizeof(struct scsi_read_dvd_struct_data_dds);
4176                 break;
4177         case DVD_STRUCT_MEDIUM_STAT:
4178                 length = sizeof(struct scsi_read_dvd_struct_data_medium_status);
4179                 break;
4180         case DVD_STRUCT_SPARE_AREA:
4181                 length = sizeof(struct scsi_read_dvd_struct_data_spare_area);
4182                 break;
4183         case DVD_STRUCT_RMD_LAST:
4184                 return (ENODEV);
4185         case DVD_STRUCT_RMD_RMA:
4186                 return (ENODEV);
4187         case DVD_STRUCT_PRERECORDED:
4188                 length = sizeof(struct scsi_read_dvd_struct_data_leadin);
4189                 break;
4190         case DVD_STRUCT_UNIQUEID:
4191                 length = sizeof(struct scsi_read_dvd_struct_data_disc_id);
4192                 break;
4193         case DVD_STRUCT_DCB:
4194                 return (ENODEV);
4195         case DVD_STRUCT_LIST:
4196                 /*
4197                  * This is the maximum allocation length for the READ DVD
4198                  * STRUCTURE command.  There's nothing in the MMC3 spec
4199                  * that indicates a limit in the amount of data that can
4200                  * be returned from this call, other than the limits
4201                  * imposed by the 2-byte length variables.
4202                  */
4203                 length = 65535;
4204                 break;
4205         default:
4206                 return (EINVAL);
4207         }
4208
4209         if (length != 0) {
4210                 databuf = malloc(length, M_DEVBUF, M_WAITOK | M_ZERO);
4211         } else
4212                 databuf = NULL;
4213
4214         cam_periph_lock(periph);
4215         ccb = cdgetccb(periph, CAM_PRIORITY_NORMAL);
4216
4217         scsi_read_dvd_structure(&ccb->csio,
4218                                 /* retries */ cd_retry_count,
4219                                 /* cbfcnp */ cddone,
4220                                 /* tag_action */ MSG_SIMPLE_Q_TAG,
4221                                 /* lba */ address,
4222                                 /* layer_number */ dvdstruct->layer_num,
4223                                 /* key_format */ dvdstruct->format,
4224                                 /* agid */ dvdstruct->agid,
4225                                 /* data_ptr */ databuf,
4226                                 /* dxfer_len */ length,
4227                                 /* sense_len */ SSD_FULL_SIZE,
4228                                 /* timeout */ 50000);
4229
4230         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
4231                          /*sense_flags*/SF_RETRY_UA);
4232
4233         if (error != 0)
4234                 goto bailout;
4235
4236         switch(dvdstruct->format) {
4237         case DVD_STRUCT_PHYSICAL: {
4238                 struct scsi_read_dvd_struct_data_layer_desc *inlayer;
4239                 struct dvd_layer *outlayer;
4240                 struct scsi_read_dvd_struct_data_physical *phys_data;
4241
4242                 phys_data =
4243                         (struct scsi_read_dvd_struct_data_physical *)databuf;
4244                 inlayer = &phys_data->layer_desc;
4245                 outlayer = (struct dvd_layer *)&dvdstruct->data;
4246
4247                 dvdstruct->length = sizeof(*inlayer);
4248
4249                 outlayer->book_type = (inlayer->book_type_version &
4250                         RDSD_BOOK_TYPE_MASK) >> RDSD_BOOK_TYPE_SHIFT;
4251                 outlayer->book_version = (inlayer->book_type_version &
4252                         RDSD_BOOK_VERSION_MASK);
4253                 outlayer->disc_size = (inlayer->disc_size_max_rate &
4254                         RDSD_DISC_SIZE_MASK) >> RDSD_DISC_SIZE_SHIFT;
4255                 outlayer->max_rate = (inlayer->disc_size_max_rate &
4256                         RDSD_MAX_RATE_MASK);
4257                 outlayer->nlayers = (inlayer->layer_info &
4258                         RDSD_NUM_LAYERS_MASK) >> RDSD_NUM_LAYERS_SHIFT;
4259                 outlayer->track_path = (inlayer->layer_info &
4260                         RDSD_TRACK_PATH_MASK) >> RDSD_TRACK_PATH_SHIFT;
4261                 outlayer->layer_type = (inlayer->layer_info &
4262                         RDSD_LAYER_TYPE_MASK);
4263                 outlayer->linear_density = (inlayer->density &
4264                         RDSD_LIN_DENSITY_MASK) >> RDSD_LIN_DENSITY_SHIFT;
4265                 outlayer->track_density = (inlayer->density &
4266                         RDSD_TRACK_DENSITY_MASK);
4267                 outlayer->bca = (inlayer->bca & RDSD_BCA_MASK) >>
4268                         RDSD_BCA_SHIFT;
4269                 outlayer->start_sector = scsi_3btoul(inlayer->main_data_start);
4270                 outlayer->end_sector = scsi_3btoul(inlayer->main_data_end);
4271                 outlayer->end_sector_l0 =
4272                         scsi_3btoul(inlayer->end_sector_layer0);
4273                 break;
4274         }
4275         case DVD_STRUCT_COPYRIGHT: {
4276                 struct scsi_read_dvd_struct_data_copyright *copy_data;
4277
4278                 copy_data = (struct scsi_read_dvd_struct_data_copyright *)
4279                         databuf;
4280
4281                 dvdstruct->cpst = copy_data->cps_type;
4282                 dvdstruct->rmi = copy_data->region_info;
4283                 dvdstruct->length = 0;
4284
4285                 break;
4286         }
4287         default:
4288                 /*
4289                  * Tell the user what the overall length is, no matter
4290                  * what we can actually fit in the data buffer.
4291                  */
4292                 dvdstruct->length = length - ccb->csio.resid -
4293                         sizeof(struct scsi_read_dvd_struct_data_header);
4294
4295                 /*
4296                  * But only actually copy out the smaller of what we read
4297                  * in or what the structure can take.
4298                  */
4299                 bcopy(databuf + sizeof(struct scsi_read_dvd_struct_data_header),
4300                       dvdstruct->data,
4301                       min(sizeof(dvdstruct->data), dvdstruct->length));
4302                 break;
4303         }
4304
4305 bailout:
4306         xpt_release_ccb(ccb);
4307         cam_periph_unlock(periph);
4308
4309         if (databuf != NULL)
4310                 free(databuf, M_DEVBUF);
4311
4312         return(error);
4313 }
4314
4315 void
4316 scsi_report_key(struct ccb_scsiio *csio, u_int32_t retries,
4317                 void (*cbfcnp)(struct cam_periph *, union ccb *),
4318                 u_int8_t tag_action, u_int32_t lba, u_int8_t agid,
4319                 u_int8_t key_format, u_int8_t *data_ptr, u_int32_t dxfer_len,
4320                 u_int8_t sense_len, u_int32_t timeout)
4321 {
4322         struct scsi_report_key *scsi_cmd;
4323
4324         scsi_cmd = (struct scsi_report_key *)&csio->cdb_io.cdb_bytes;
4325         bzero(scsi_cmd, sizeof(*scsi_cmd));
4326         scsi_cmd->opcode = REPORT_KEY;
4327         scsi_ulto4b(lba, scsi_cmd->lba);
4328         scsi_ulto2b(dxfer_len, scsi_cmd->alloc_len);
4329         scsi_cmd->agid_keyformat = (agid << RK_KF_AGID_SHIFT) |
4330                 (key_format & RK_KF_KEYFORMAT_MASK);
4331
4332         cam_fill_csio(csio,
4333                       retries,
4334                       cbfcnp,
4335                       /*flags*/ (dxfer_len == 0) ? CAM_DIR_NONE : CAM_DIR_IN,
4336                       tag_action,
4337                       /*data_ptr*/ data_ptr,
4338                       /*dxfer_len*/ dxfer_len,
4339                       sense_len,
4340                       sizeof(*scsi_cmd),
4341                       timeout);
4342 }
4343
4344 void
4345 scsi_send_key(struct ccb_scsiio *csio, u_int32_t retries,
4346               void (*cbfcnp)(struct cam_periph *, union ccb *),
4347               u_int8_t tag_action, u_int8_t agid, u_int8_t key_format,
4348               u_int8_t *data_ptr, u_int32_t dxfer_len, u_int8_t sense_len,
4349               u_int32_t timeout)
4350 {
4351         struct scsi_send_key *scsi_cmd;
4352
4353         scsi_cmd = (struct scsi_send_key *)&csio->cdb_io.cdb_bytes;
4354         bzero(scsi_cmd, sizeof(*scsi_cmd));
4355         scsi_cmd->opcode = SEND_KEY;
4356
4357         scsi_ulto2b(dxfer_len, scsi_cmd->param_len);
4358         scsi_cmd->agid_keyformat = (agid << RK_KF_AGID_SHIFT) |
4359                 (key_format & RK_KF_KEYFORMAT_MASK);
4360
4361         cam_fill_csio(csio,
4362                       retries,
4363                       cbfcnp,
4364                       /*flags*/ CAM_DIR_OUT,
4365                       tag_action,
4366                       /*data_ptr*/ data_ptr,
4367                       /*dxfer_len*/ dxfer_len,
4368                       sense_len,
4369                       sizeof(*scsi_cmd),
4370                       timeout);
4371 }
4372
4373
4374 void
4375 scsi_read_dvd_structure(struct ccb_scsiio *csio, u_int32_t retries,
4376                         void (*cbfcnp)(struct cam_periph *, union ccb *),
4377                         u_int8_t tag_action, u_int32_t address,
4378                         u_int8_t layer_number, u_int8_t format, u_int8_t agid,
4379                         u_int8_t *data_ptr, u_int32_t dxfer_len,
4380                         u_int8_t sense_len, u_int32_t timeout)
4381 {
4382         struct scsi_read_dvd_structure *scsi_cmd;
4383
4384         scsi_cmd = (struct scsi_read_dvd_structure *)&csio->cdb_io.cdb_bytes;
4385         bzero(scsi_cmd, sizeof(*scsi_cmd));
4386         scsi_cmd->opcode = READ_DVD_STRUCTURE;
4387
4388         scsi_ulto4b(address, scsi_cmd->address);
4389         scsi_cmd->layer_number = layer_number;
4390         scsi_cmd->format = format;
4391         scsi_ulto2b(dxfer_len, scsi_cmd->alloc_len);
4392         /* The AGID is the top two bits of this byte */
4393         scsi_cmd->agid = agid << 6;
4394
4395         cam_fill_csio(csio,
4396                       retries,
4397                       cbfcnp,
4398                       /*flags*/ CAM_DIR_IN,
4399                       tag_action,
4400                       /*data_ptr*/ data_ptr,
4401                       /*dxfer_len*/ dxfer_len,
4402                       sense_len,
4403                       sizeof(*scsi_cmd),
4404                       timeout);
4405 }