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 }
 432
 433 static void
 434 cdcleanup(struct cam_periph *periph)
 435 {
 436         struct cd_softc *softc;
 437
 438         softc = (struct cd_softc *)periph->softc;
 439
 440         /*
 441          * In the queued, non-active case, the device in question
 442          * has already been removed from the changer run queue.  Since this
 443          * device is active, we need to de-activate it, and schedule
 444          * another device to run.  (if there is another one to run)
 445          */
 446         if ((softc->flags & CD_FLAG_CHANGER)
 447          && (softc->flags & CD_FLAG_ACTIVE)) {
 448
 449                 /*
 450                  * The purpose of the short timeout is soley to determine
 451                  * whether the current device has finished or not.  Well,
 452                  * since we're removing the active device, we know that it
 453                  * is finished.  So, get rid of the short timeout.
 454                  * Otherwise, if we're in the time period before the short
 455                  * timeout fires, and there are no other devices in the
 456                  * queue to run, there won't be any other device put in the
 457                  * active slot.  i.e., when we call cdrunchangerqueue()
 458                  * below, it won't do anything.  Then, when the short
 459                  * timeout fires, it'll look at the "current device", which
 460                  * we are free below, and possibly panic the kernel on a
 461                  * bogus pointer reference.
 462                  *
 463                  * The long timeout doesn't really matter, since we
 464                  * decrement the qfrozen_cnt to indicate that there is
 465                  * nothing in the active slot now.  Therefore, there won't
 466                  * be any bogus pointer references there.
 467                  */
 468                 if (softc->changer->flags & CHANGER_SHORT_TMOUT_SCHED) {
 469                         callout_stop(&softc->changer->short_handle);
 470                         softc->changer->flags &= ~CHANGER_SHORT_TMOUT_SCHED;
 471                 }
 472                 softc->changer->devq.qfrozen_cnt--;
 473                 softc->changer->flags |= CHANGER_MANUAL_CALL;
 474                 cdrunchangerqueue(softc->changer);
 475         }
 476
 477         /*
 478          * If we're removing the last device on the changer, go ahead and
 479          * remove the changer device structure.
 480          */
 481         if ((softc->flags & CD_FLAG_CHANGER)
 482          && (--softc->changer->num_devices == 0)) {
 483
 484                 /*
 485                  * Theoretically, there shouldn't be any timeouts left, but
 486                  * I'm not completely sure that that will be the case.  So,
 487                  * it won't hurt to check and see if there are any left.
 488                  */
 489                 if (softc->changer->flags & CHANGER_TIMEOUT_SCHED) {
 490                         callout_stop(&softc->changer->long_handle);
 491                         softc->changer->flags &= ~CHANGER_TIMEOUT_SCHED;
 492                 }
 493
 494                 if (softc->changer->flags & CHANGER_SHORT_TMOUT_SCHED) {
 495                         callout_stop(&softc->changer->short_handle);
 496                         softc->changer->flags &= ~CHANGER_SHORT_TMOUT_SCHED;
 497                 }
 498
 499                 mtx_lock(&changerq_mtx);
 500                 STAILQ_REMOVE(&changerq, softc->changer, cdchanger,
 501                               changer_links);
 502                 num_changers--;
 503                 mtx_unlock(&changerq_mtx);
 504                 xpt_print(periph->path, "removing changer entry\n");
 505                 free(softc->changer, M_DEVBUF);
 506         }
 507         cam_periph_unlock(periph);
 508         if ((softc->flags & CD_FLAG_SCTX_INIT) != 0
 509             && sysctl_ctx_free(&softc->sysctl_ctx) != 0) {
 510                 xpt_print(periph->path, "can't remove sysctl context\n");
 511         }
 512
 513         callout_drain(&softc->mediapoll_c);
 514         disk_destroy(softc->disk);
 515         free(softc, M_DEVBUF);
 516         cam_periph_lock(periph);
 517 }
 518
 519 static void
 520 cdasync(void *callback_arg, u_int32_t code,
 521         struct cam_path *path, void *arg)
 522 {
 523         struct cam_periph *periph;
 524         struct cd_softc *softc;
 525
 526         periph = (struct cam_periph *)callback_arg;
 527         switch (code) {
 528         case AC_FOUND_DEVICE:
 529         {
 530                 struct ccb_getdev *cgd;
 531                 cam_status status;
 532
 533                 cgd = (struct ccb_getdev *)arg;
 534                 if (cgd == NULL)
 535                         break;
 536
 537                 if (cgd->protocol != PROTO_SCSI)
 538                         break;
 539
 540                 if (SID_TYPE(&cgd->inq_data) != T_CDROM
 541                     && SID_TYPE(&cgd->inq_data) != T_WORM)
 542                         break;
 543
 544                 /*
 545                  * Allocate a peripheral instance for
 546                  * this device and start the probe
 547                  * process.
 548                  */
 549                 status = cam_periph_alloc(cdregister, cdoninvalidate,
 550                                           cdcleanup, cdstart,
 551                                           "cd", CAM_PERIPH_BIO,
 552                                           cgd->ccb_h.path, cdasync,
 553                                           AC_FOUND_DEVICE, cgd);
 554
 555                 if (status != CAM_REQ_CMP
 556                  && status != CAM_REQ_INPROG)
 557                         printf("cdasync: Unable to attach new device "
 558                                "due to status 0x%x\n", status);
 559
 560                 break;
 561         }
 562         case AC_UNIT_ATTENTION:
 563         {
 564                 union ccb *ccb;
 565                 int error_code, sense_key, asc, ascq;
 566
 567                 softc = (struct cd_softc *)periph->softc;
 568                 ccb = (union ccb *)arg;
 569
 570                 /*
 571                  * Handle all media change UNIT ATTENTIONs except
 572                  * our own, as they will be handled by cderror().
 573                  */
 574                 if (xpt_path_periph(ccb->ccb_h.path) != periph &&
 575                     scsi_extract_sense_ccb(ccb,
 576                      &error_code, &sense_key, &asc, &ascq)) {
 577                         if (asc == 0x28 && ascq == 0x00)
 578                                 disk_media_changed(softc->disk, M_NOWAIT);
 579                 }
 580                 cam_periph_async(periph, code, path, arg);
 581                 break;
 582         }
 583         case AC_SCSI_AEN:
 584                 softc = (struct cd_softc *)periph->softc;
 585                 if (softc->state == CD_STATE_NORMAL && !softc->tur) {
 586                         if (cam_periph_acquire(periph) == CAM_REQ_CMP) {
 587                                 softc->tur = 1;
 588                                 xpt_schedule(periph, CAM_PRIORITY_NORMAL);
 589                         }
 590                 }
 591                 /* FALLTHROUGH */
 592         case AC_SENT_BDR:
 593         case AC_BUS_RESET:
 594         {
 595                 struct ccb_hdr *ccbh;
 596
 597                 softc = (struct cd_softc *)periph->softc;
 598                 /*
 599                  * Don't fail on the expected unit attention
 600                  * that will occur.
 601                  */
 602                 softc->flags |= CD_FLAG_RETRY_UA;
 603                 LIST_FOREACH(ccbh, &softc->pending_ccbs, periph_links.le)
 604                         ccbh->ccb_state |= CD_CCB_RETRY_UA;
 605                 /* FALLTHROUGH */
 606         }
 607         default:
 608                 cam_periph_async(periph, code, path, arg);
 609                 break;
 610         }
 611 }
 612
 613 static void
 614 cdsysctlinit(void *context, int pending)
 615 {
 616         struct cam_periph *periph;
 617         struct cd_softc *softc;
 618         char tmpstr[80], tmpstr2[80];
 619
 620         periph = (struct cam_periph *)context;
 621         if (cam_periph_acquire(periph) != CAM_REQ_CMP)
 622                 return;
 623
 624         softc = (struct cd_softc *)periph->softc;
 625         snprintf(tmpstr, sizeof(tmpstr), "CAM CD unit %d", periph->unit_number);
 626         snprintf(tmpstr2, sizeof(tmpstr2), "%d", periph->unit_number);
 627
 628         sysctl_ctx_init(&softc->sysctl_ctx);
 629         softc->flags |= CD_FLAG_SCTX_INIT;
 630         softc->sysctl_tree = SYSCTL_ADD_NODE(&softc->sysctl_ctx,
 631                 SYSCTL_STATIC_CHILDREN(_kern_cam_cd), OID_AUTO,
 632                 tmpstr2, CTLFLAG_RD, 0, tmpstr);
 633
 634         if (softc->sysctl_tree == NULL) {
 635                 printf("cdsysctlinit: unable to allocate sysctl tree\n");
 636                 cam_periph_release(periph);
 637                 return;
 638         }
 639
 640         /*
 641          * Now register the sysctl handler, so the user can the value on
 642          * the fly.
 643          */
 644         SYSCTL_ADD_PROC(&softc->sysctl_ctx,SYSCTL_CHILDREN(softc->sysctl_tree),
 645                 OID_AUTO, "minimum_cmd_size", CTLTYPE_INT | CTLFLAG_RW,
 646                 &softc->minimum_command_size, 0, cdcmdsizesysctl, "I",
 647                 "Minimum CDB size");
 648
 649         cam_periph_release(periph);
 650 }
 651
 652 /*
 653  * We have a handler function for this so we can check the values when the
 654  * user sets them, instead of every time we look at them.
 655  */
 656 static int
 657 cdcmdsizesysctl(SYSCTL_HANDLER_ARGS)
 658 {
 659         int error, value;
 660
 661         value = *(int *)arg1;
 662
 663         error = sysctl_handle_int(oidp, &value, 0, req);
 664
 665         if ((error != 0)
 666          || (req->newptr == NULL))
 667                 return (error);
 668
 669         /*
 670          * The only real values we can have here are 6 or 10.  I don't
 671          * really forsee having 12 be an option at any time in the future.
 672          * So if the user sets something less than or equal to 6, we'll set
 673          * it to 6.  If he sets something greater than 6, we'll set it to 10.
 674          *
 675          * I suppose we could just return an error here for the wrong values,
 676          * but I don't think it's necessary to do so, as long as we can
 677          * determine the user's intent without too much trouble.
 678          */
 679         if (value < 6)
 680                 value = 6;
 681         else if (value > 6)
 682                 value = 10;
 683
 684         *(int *)arg1 = value;
 685
 686         return (0);
 687 }
 688
 689 static cam_status
 690 cdregister(struct cam_periph *periph, void *arg)
 691 {
 692         struct cd_softc *softc;
 693         struct ccb_pathinq cpi;
 694         struct ccb_getdev *cgd;
 695         char tmpstr[80];
 696         caddr_t match;
 697
 698         cgd = (struct ccb_getdev *)arg;
 699         if (cgd == NULL) {
 700                 printf("cdregister: no getdev CCB, can't register device\n");
 701                 return(CAM_REQ_CMP_ERR);
 702         }
 703
 704         softc = (struct cd_softc *)malloc(sizeof(*softc),M_DEVBUF,
 705             M_NOWAIT | M_ZERO);
 706         if (softc == NULL) {
 707                 printf("cdregister: Unable to probe new device. "
 708                        "Unable to allocate softc\n");
 709                 return(CAM_REQ_CMP_ERR);
 710         }
 711
 712         LIST_INIT(&softc->pending_ccbs);
 713         STAILQ_INIT(&softc->mode_queue);
 714         softc->state = CD_STATE_PROBE;
 715         bioq_init(&softc->bio_queue);
 716         if (SID_IS_REMOVABLE(&cgd->inq_data))
 717                 softc->flags |= CD_FLAG_DISC_REMOVABLE;
 718
 719         periph->softc = softc;
 720         softc->periph = periph;
 721
 722         /*
 723          * See if this device has any quirks.
 724          */
 725         match = cam_quirkmatch((caddr_t)&cgd->inq_data,
 726                                (caddr_t)cd_quirk_table,
 727                                sizeof(cd_quirk_table)/sizeof(*cd_quirk_table),
 728                                sizeof(*cd_quirk_table), scsi_inquiry_match);
 729
 730         if (match != NULL)
 731                 softc->quirks = ((struct cd_quirk_entry *)match)->quirks;
 732         else
 733                 softc->quirks = CD_Q_NONE;
 734
 735         /* Check if the SIM does not want 6 byte commands */
 736         bzero(&cpi, sizeof(cpi));
 737         xpt_setup_ccb(&cpi.ccb_h, periph->path, CAM_PRIORITY_NORMAL);
 738         cpi.ccb_h.func_code = XPT_PATH_INQ;
 739         xpt_action((union ccb *)&cpi);
 740         if (cpi.ccb_h.status == CAM_REQ_CMP && (cpi.hba_misc & PIM_NO_6_BYTE))
 741                 softc->quirks |= CD_Q_10_BYTE_ONLY;
 742
 743         TASK_INIT(&softc->sysctl_task, 0, cdsysctlinit, periph);
 744
 745         /* The default is 6 byte commands, unless quirked otherwise */
 746         if (softc->quirks & CD_Q_10_BYTE_ONLY)
 747                 softc->minimum_command_size = 10;
 748         else
 749                 softc->minimum_command_size = 6;
 750
 751         /*
 752          * Refcount and block open attempts until we are setup
 753          * Can't block
 754          */
 755         (void)cam_periph_hold(periph, PRIBIO);
 756         cam_periph_unlock(periph);
 757         /*
 758          * Load the user's default, if any.
 759          */
 760         snprintf(tmpstr, sizeof(tmpstr), "kern.cam.cd.%d.minimum_cmd_size",
 761                  periph->unit_number);
 762         TUNABLE_INT_FETCH(tmpstr, &softc->minimum_command_size);
 763
 764         /* 6 and 10 are the only permissible values here. */
 765         if (softc->minimum_command_size < 6)
 766                 softc->minimum_command_size = 6;
 767         else if (softc->minimum_command_size > 6)
 768                 softc->minimum_command_size = 10;
 769
 770         /*
 771          * We need to register the statistics structure for this device,
 772          * but we don't have the blocksize yet for it.  So, we register
 773          * the structure and indicate that we don't have the blocksize
 774          * yet.  Unlike other SCSI peripheral drivers, we explicitly set
 775          * the device type here to be CDROM, rather than just ORing in
 776          * the device type.  This is because this driver can attach to either
 777          * CDROM or WORM devices, and we want this peripheral driver to
 778          * show up in the devstat list as a CD peripheral driver, not a
 779          * WORM peripheral driver.  WORM drives will also have the WORM
 780          * driver attached to them.
 781          */
 782         softc->disk = disk_alloc();
 783         softc->disk->d_devstat = devstat_new_entry("cd",
 784                           periph->unit_number, 0,
 785                           DEVSTAT_BS_UNAVAILABLE,
 786                           DEVSTAT_TYPE_CDROM |
 787                           XPORT_DEVSTAT_TYPE(cpi.transport),
 788                           DEVSTAT_PRIORITY_CD);
 789         softc->disk->d_open = cdopen;
 790         softc->disk->d_close = cdclose;
 791         softc->disk->d_strategy = cdstrategy;
 792         softc->disk->d_gone = cddiskgonecb;
 793         softc->disk->d_ioctl = cdioctl;
 794         softc->disk->d_name = "cd";
 795         cam_strvis(softc->disk->d_descr, cgd->inq_data.vendor,
 796             sizeof(cgd->inq_data.vendor), sizeof(softc->disk->d_descr));
 797         strlcat(softc->disk->d_descr, " ", sizeof(softc->disk->d_descr));
 798         cam_strvis(&softc->disk->d_descr[strlen(softc->disk->d_descr)],
 799             cgd->inq_data.product, sizeof(cgd->inq_data.product),
 800             sizeof(softc->disk->d_descr) - strlen(softc->disk->d_descr));
 801         softc->disk->d_unit = periph->unit_number;
 802         softc->disk->d_drv1 = periph;
 803         if (cpi.maxio == 0)
 804                 softc->disk->d_maxsize = DFLTPHYS;      /* traditional default */
 805         else if (cpi.maxio > MAXPHYS)
 806                 softc->disk->d_maxsize = MAXPHYS;       /* for safety */
 807         else
 808                 softc->disk->d_maxsize = cpi.maxio;
 809         softc->disk->d_flags = 0;
 810         softc->disk->d_hba_vendor = cpi.hba_vendor;
 811         softc->disk->d_hba_device = cpi.hba_device;
 812         softc->disk->d_hba_subvendor = cpi.hba_subvendor;
 813         softc->disk->d_hba_subdevice = cpi.hba_subdevice;
 814
 815         /*
 816          * Acquire a reference to the periph before we register with GEOM.
 817          * We'll release this reference once GEOM calls us back (via
 818          * dadiskgonecb()) telling us that our provider has been freed.
 819          */
 820         if (cam_periph_acquire(periph) != CAM_REQ_CMP) {
 821                 xpt_print(periph->path, "%s: lost periph during "
 822                           "registration!\n", __func__);
 823                 cam_periph_lock(periph);
 824                 return (CAM_REQ_CMP_ERR);
 825         }
 826
 827         disk_create(softc->disk, DISK_VERSION);
 828         cam_periph_lock(periph);
 829
 830         /*
 831          * Add an async callback so that we get
 832          * notified if this device goes away.
 833          */
 834         xpt_register_async(AC_SENT_BDR | AC_BUS_RESET | AC_LOST_DEVICE |
 835             AC_SCSI_AEN | AC_UNIT_ATTENTION, cdasync, periph, periph->path);
 836
 837         /*
 838          * If the target lun is greater than 0, we most likely have a CD
 839          * changer device.  Check the quirk entries as well, though, just
 840          * in case someone has a CD tower with one lun per drive or
 841          * something like that.  Also, if we know up front that a
 842          * particular device is a changer, we can mark it as such starting
 843          * with lun 0, instead of lun 1.  It shouldn't be necessary to have
 844          * a quirk entry to define something as a changer, however.
 845          */
 846         if (((cgd->ccb_h.target_lun > 0)
 847           && ((softc->quirks & CD_Q_NO_CHANGER) == 0))
 848          || ((softc->quirks & CD_Q_CHANGER) != 0)) {
 849                 struct cdchanger *nchanger;
 850                 struct cam_periph *nperiph;
 851                 struct cam_path *path;
 852                 cam_status status;
 853                 int found;
 854
 855                 /* Set the changer flag in the current device's softc */
 856                 softc->flags |= CD_FLAG_CHANGER;
 857
 858                 /*
 859                  * Now, look around for an existing changer device with the
 860                  * same path and target ID as the current device.
 861                  */
 862                 mtx_lock(&changerq_mtx);
 863                 for (found = 0,
 864                      nchanger = (struct cdchanger *)STAILQ_FIRST(&changerq);
 865                      nchanger != NULL;
 866                      nchanger = STAILQ_NEXT(nchanger, changer_links)){
 867                         if ((nchanger->path_id == cgd->ccb_h.path_id)
 868                          && (nchanger->target_id == cgd->ccb_h.target_id)) {
 869                                 found = 1;
 870                                 break;
 871                         }
 872                 }
 873                 mtx_unlock(&changerq_mtx);
 874
 875                 /*
 876                  * If we found a matching entry, just add this device to
 877                  * the list of devices on this changer.
 878                  */
 879                 if (found == 1) {
 880                         struct chdevlist *chlunhead;
 881
 882                         chlunhead = &nchanger->chluns;
 883
 884                         /*
 885                          * XXX KDM look at consolidating this code with the
 886                          * code below in a separate function.
 887                          */
 888
 889                         /*
 890                          * Create a path with lun id 0, and see if we can
 891                          * find a matching device
 892                          */
 893                         status = xpt_create_path(&path, /*periph*/ periph,
 894                                                  cgd->ccb_h.path_id,
 895                                                  cgd->ccb_h.target_id, 0);
 896
 897                         if ((status == CAM_REQ_CMP)
 898                          && ((nperiph = cam_periph_find(path, "cd")) != NULL)){
 899                                 struct cd_softc *nsoftc;
 900
 901                                 nsoftc = (struct cd_softc *)nperiph->softc;
 902
 903                                 if ((nsoftc->flags & CD_FLAG_CHANGER) == 0){
 904                                         nsoftc->flags |= CD_FLAG_CHANGER;
 905                                         nchanger->num_devices++;
 906                                         if (camq_resize(&nchanger->devq,
 907                                            nchanger->num_devices)!=CAM_REQ_CMP){
 908                                                 printf("cdregister: "
 909                                                        "camq_resize "
 910                                                        "failed, changer "
 911                                                        "support may "
 912                                                        "be messed up\n");
 913                                         }
 914                                         nsoftc->changer = nchanger;
 915                                         nsoftc->pinfo.index =CAM_UNQUEUED_INDEX;
 916
 917                                         STAILQ_INSERT_TAIL(&nchanger->chluns,
 918                                                           nsoftc,changer_links);
 919                                 }
 920                                 xpt_free_path(path);
 921                         } else if (status == CAM_REQ_CMP)
 922                                 xpt_free_path(path);
 923                         else {
 924                                 printf("cdregister: unable to allocate path\n"
 925                                        "cdregister: changer support may be "
 926                                        "broken\n");
 927                         }
 928
 929                         nchanger->num_devices++;
 930
 931                         softc->changer = nchanger;
 932                         softc->pinfo.index = CAM_UNQUEUED_INDEX;
 933
 934                         if (camq_resize(&nchanger->devq,
 935                             nchanger->num_devices) != CAM_REQ_CMP) {
 936                                 printf("cdregister: camq_resize "
 937                                        "failed, changer support may "
 938                                        "be messed up\n");
 939                         }
 940
 941                         STAILQ_INSERT_TAIL(chlunhead, softc, changer_links);
 942                 }
 943                 /*
 944                  * In this case, we don't already have an entry for this
 945                  * particular changer, so we need to create one, add it to
 946                  * the queue, and queue this device on the list for this
 947                  * changer.  Before we queue this device, however, we need
 948                  * to search for lun id 0 on this target, and add it to the
 949                  * queue first, if it exists.  (and if it hasn't already
 950                  * been marked as part of the changer.)
 951                  */
 952                 else {
 953                         nchanger = malloc(sizeof(struct cdchanger),
 954                                 M_DEVBUF, M_NOWAIT | M_ZERO);
 955                         if (nchanger == NULL) {
 956                                 softc->flags &= ~CD_FLAG_CHANGER;
 957                                 printf("cdregister: unable to malloc "
 958                                        "changer structure\ncdregister: "
 959                                        "changer support disabled\n");
 960
 961                                 /*
 962                                  * Yes, gotos can be gross but in this case
 963                                  * I think it's justified..
 964                                  */
 965                                 goto cdregisterexit;
 966                         }
 967                         if (camq_init(&nchanger->devq, 1) != 0) {
 968                                 softc->flags &= ~CD_FLAG_CHANGER;
 969                                 printf("cdregister: changer support "
 970                                        "disabled\n");
 971                                 goto cdregisterexit;
 972                         }
 973
 974                         nchanger->path_id = cgd->ccb_h.path_id;
 975                         nchanger->target_id = cgd->ccb_h.target_id;
 976
 977                         /* this is superfluous, but it makes things clearer */
 978                         nchanger->num_devices = 0;
 979
 980                         STAILQ_INIT(&nchanger->chluns);
 981
 982                         callout_init_mtx(&nchanger->long_handle,
 983                             periph->sim->mtx, 0);
 984                         callout_init_mtx(&nchanger->short_handle,
 985                             periph->sim->mtx, 0);
 986
 987                         mtx_lock(&changerq_mtx);
 988                         num_changers++;
 989                         STAILQ_INSERT_TAIL(&changerq, nchanger,
 990                                            changer_links);
 991                         mtx_unlock(&changerq_mtx);
 992
 993                         /*
 994                          * Create a path with lun id 0, and see if we can
 995                          * find a matching device
 996                          */
 997                         status = xpt_create_path(&path, /*periph*/ periph,
 998                                                  cgd->ccb_h.path_id,
 999                                                  cgd->ccb_h.target_id, 0);
1000
1001                         /*
1002                          * If we were able to allocate the path, and if we
1003                          * find a matching device and it isn't already
1004                          * marked as part of a changer, then we add it to
1005                          * the current changer.
1006                          */
1007                         if ((status == CAM_REQ_CMP)
1008                          && ((nperiph = cam_periph_find(path, "cd")) != NULL)
1009                          && ((((struct cd_softc *)periph->softc)->flags &
1010                                CD_FLAG_CHANGER) == 0)) {
1011                                 struct cd_softc *nsoftc;
1012
1013                                 nsoftc = (struct cd_softc *)nperiph->softc;
1014
1015                                 nsoftc->flags |= CD_FLAG_CHANGER;
1016                                 nchanger->num_devices++;
1017                                 if (camq_resize(&nchanger->devq,
1018                                     nchanger->num_devices) != CAM_REQ_CMP) {
1019                                         printf("cdregister: camq_resize "
1020                                                "failed, changer support may "
1021                                                "be messed up\n");
1022                                 }
1023                                 nsoftc->changer = nchanger;
1024                                 nsoftc->pinfo.index = CAM_UNQUEUED_INDEX;
1025
1026                                 STAILQ_INSERT_TAIL(&nchanger->chluns,
1027                                                    nsoftc, changer_links);
1028                                 xpt_free_path(path);
1029                         } else if (status == CAM_REQ_CMP)
1030                                 xpt_free_path(path);
1031                         else {
1032                                 printf("cdregister: unable to allocate path\n"
1033                                        "cdregister: changer support may be "
1034                                        "broken\n");
1035                         }
1036
1037                         softc->changer = nchanger;
1038                         softc->pinfo.index = CAM_UNQUEUED_INDEX;
1039                         nchanger->num_devices++;
1040                         if (camq_resize(&nchanger->devq,
1041                             nchanger->num_devices) != CAM_REQ_CMP) {
1042                                 printf("cdregister: camq_resize "
1043                                        "failed, changer support may "
1044                                        "be messed up\n");
1045                         }
1046                         STAILQ_INSERT_TAIL(&nchanger->chluns, softc,
1047                                            changer_links);
1048                 }
1049         }
1050
1051         /*
1052          * Schedule a periodic media polling events.
1053          */
1054         callout_init_mtx(&softc->mediapoll_c, periph->sim->mtx, 0);
1055         if ((softc->flags & CD_FLAG_DISC_REMOVABLE) &&
1056             (softc->flags & CD_FLAG_CHANGER) == 0 &&
1057             (cgd->inq_flags & SID_AEN) == 0 &&
1058             cd_poll_period != 0)
1059                 callout_reset(&softc->mediapoll_c, cd_poll_period * hz,
1060                     cdmediapoll, periph);
1061
1062 cdregisterexit:
1063
1064         if ((softc->flags & CD_FLAG_CHANGER) == 0)
1065                 xpt_schedule(periph, CAM_PRIORITY_DEV);
1066         else
1067                 cdschedule(periph, CAM_PRIORITY_DEV);
1068
1069         return(CAM_REQ_CMP);
1070 }
1071
1072 static int
1073 cdopen(struct disk *dp)
1074 {
1075         struct cam_periph *periph;
1076         struct cd_softc *softc;
1077         int error;
1078
1079         periph = (struct cam_periph *)dp->d_drv1;
1080         softc = (struct cd_softc *)periph->softc;
1081
1082         if (cam_periph_acquire(periph) != CAM_REQ_CMP)
1083                 return(ENXIO);
1084
1085         cam_periph_lock(periph);
1086
1087         if (softc->flags & CD_FLAG_INVALID) {
1088                 cam_periph_release_locked(periph);
1089                 cam_periph_unlock(periph);
1090                 return(ENXIO);
1091         }
1092
1093         if ((error = cam_periph_hold(periph, PRIBIO | PCATCH)) != 0) {
1094                 cam_periph_release_locked(periph);
1095                 cam_periph_unlock(periph);
1096                 return (error);
1097         }
1098
1099         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE | CAM_DEBUG_PERIPH,
1100             ("cdopen\n"));
1101
1102         /*
1103          * Check for media, and set the appropriate flags.  We don't bail
1104          * if we don't have media, but then we don't allow anything but the
1105          * CDIOCEJECT/CDIOCCLOSE ioctls if there is no media.
1106          */
1107         cdcheckmedia(periph);
1108
1109         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("leaving cdopen\n"));
1110         cam_periph_unhold(periph);
1111
1112         cam_periph_unlock(periph);
1113
1114         return (0);
1115 }
1116
1117 static int
1118 cdclose(struct disk *dp)
1119 {
1120         struct  cam_periph *periph;
1121         struct  cd_softc *softc;
1122
1123         periph = (struct cam_periph *)dp->d_drv1;
1124         softc = (struct cd_softc *)periph->softc;
1125
1126         cam_periph_lock(periph);
1127         if (cam_periph_hold(periph, PRIBIO) != 0) {
1128                 cam_periph_unlock(periph);
1129                 cam_periph_release(periph);
1130                 return (0);
1131         }
1132
1133         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE | CAM_DEBUG_PERIPH,
1134             ("cdclose\n"));
1135
1136         if ((softc->flags & CD_FLAG_DISC_REMOVABLE) != 0)
1137                 cdprevent(periph, PR_ALLOW);
1138
1139         /*
1140          * Since we're closing this CD, mark the blocksize as unavailable.
1141          * It will be marked as available when the CD is opened again.
1142          */
1143         softc->disk->d_devstat->flags |= DEVSTAT_BS_UNAVAILABLE;
1144
1145         /*
1146          * We'll check the media and toc again at the next open().
1147          */
1148         softc->flags &= ~(CD_FLAG_VALID_MEDIA|CD_FLAG_VALID_TOC);
1149
1150         cam_periph_unhold(periph);
1151         cam_periph_release_locked(periph);
1152         cam_periph_unlock(periph);
1153
1154         return (0);
1155 }
1156
1157 static void
1158 cdshorttimeout(void *arg)
1159 {
1160         struct cdchanger *changer;
1161
1162         changer = (struct cdchanger *)arg;
1163
1164         /* Always clear the short timeout flag, since that's what we're in */
1165         changer->flags &= ~CHANGER_SHORT_TMOUT_SCHED;
1166
1167         /*
1168          * Check to see if there is any more pending or outstanding I/O for
1169          * this device.  If not, move it out of the active slot.
1170          */
1171         if ((bioq_first(&changer->cur_device->bio_queue) == NULL)
1172          && (changer->cur_device->outstanding_cmds == 0)) {
1173                 changer->flags |= CHANGER_MANUAL_CALL;
1174                 cdrunchangerqueue(changer);
1175         }
1176 }
1177
1178 /*
1179  * This is a wrapper for xpt_schedule.  It only applies to changers.
1180  */
1181 static void
1182 cdschedule(struct cam_periph *periph, int priority)
1183 {
1184         struct cd_softc *softc;
1185
1186         softc = (struct cd_softc *)periph->softc;
1187
1188         /*
1189          * If this device isn't currently queued, and if it isn't
1190          * the active device, then we queue this device and run the
1191          * changer queue if there is no timeout scheduled to do it.
1192          * If this device is the active device, just schedule it
1193          * to run again.  If this device is queued, there should be
1194          * a timeout in place already that will make sure it runs.
1195          */
1196         if ((softc->pinfo.index == CAM_UNQUEUED_INDEX)
1197          && ((softc->flags & CD_FLAG_ACTIVE) == 0)) {
1198                 /*
1199                  * We don't do anything with the priority here.
1200                  * This is strictly a fifo queue.
1201                  */
1202                 softc->pinfo.priority = CAM_PRIORITY_NORMAL;
1203                 softc->pinfo.generation = ++softc->changer->devq.generation;
1204                 camq_insert(&softc->changer->devq, (cam_pinfo *)softc);
1205
1206                 /*
1207                  * Since we just put a device in the changer queue,
1208                  * check and see if there is a timeout scheduled for
1209                  * this changer.  If so, let the timeout handle
1210                  * switching this device into the active slot.  If
1211                  * not, manually call the timeout routine to
1212                  * bootstrap things.
1213                  */
1214                 if (((softc->changer->flags & CHANGER_TIMEOUT_SCHED)==0)
1215                  && ((softc->changer->flags & CHANGER_NEED_TIMEOUT)==0)
1216                  && ((softc->changer->flags & CHANGER_SHORT_TMOUT_SCHED)==0)){
1217                         softc->changer->flags |= CHANGER_MANUAL_CALL;
1218                         cdrunchangerqueue(softc->changer);
1219                 }
1220         } else if ((softc->flags & CD_FLAG_ACTIVE)
1221                 && ((softc->flags & CD_FLAG_SCHED_ON_COMP) == 0))
1222                 xpt_schedule(periph, priority);
1223 }
1224
1225 static void
1226 cdrunchangerqueue(void *arg)
1227 {
1228         struct cd_softc *softc;
1229         struct cdchanger *changer;
1230         int called_from_timeout;
1231
1232         changer = (struct cdchanger *)arg;
1233
1234         /*
1235          * If we have NOT been called from cdstrategy() or cddone(), and
1236          * instead from a timeout routine, go ahead and clear the
1237          * timeout flag.
1238          */
1239         if ((changer->flags & CHANGER_MANUAL_CALL) == 0) {
1240                 changer->flags &= ~CHANGER_TIMEOUT_SCHED;
1241                 called_from_timeout = 1;
1242         } else
1243                 called_from_timeout = 0;
1244
1245         /* Always clear the manual call flag */
1246         changer->flags &= ~CHANGER_MANUAL_CALL;
1247
1248         /* nothing to do if the queue is empty */
1249         if (changer->devq.entries <= 0) {
1250                 return;
1251         }
1252
1253         /*
1254          * If the changer queue is frozen, that means we have an active
1255          * device.
1256          */
1257         if (changer->devq.qfrozen_cnt > 0) {
1258
1259                 /*
1260                  * We always need to reset the frozen count and clear the
1261                  * active flag.
1262                  */
1263                 changer->devq.qfrozen_cnt--;
1264                 changer->cur_device->flags &= ~CD_FLAG_ACTIVE;
1265                 changer->cur_device->flags &= ~CD_FLAG_SCHED_ON_COMP;
1266
1267                 if (changer->cur_device->outstanding_cmds > 0) {
1268                         changer->cur_device->flags |= CD_FLAG_SCHED_ON_COMP;
1269                         changer->cur_device->bufs_left =
1270                                 changer->cur_device->outstanding_cmds;
1271                         if (called_from_timeout) {
1272                                 callout_reset(&changer->long_handle,
1273                                     changer_max_busy_seconds * hz,
1274                                     cdrunchangerqueue, changer);
1275                                 changer->flags |= CHANGER_TIMEOUT_SCHED;
1276                         }
1277                         return;
1278                 }
1279
1280                 /*
1281                  * Check to see whether the current device has any I/O left
1282                  * to do.  If so, requeue it at the end of the queue.  If
1283                  * not, there is no need to requeue it.
1284                  */
1285                 if (bioq_first(&changer->cur_device->bio_queue) != NULL) {
1286
1287                         changer->cur_device->pinfo.generation =
1288                                 ++changer->devq.generation;
1289                         camq_insert(&changer->devq,
1290                                 (cam_pinfo *)changer->cur_device);
1291                 }
1292         }
1293
1294         softc = (struct cd_softc *)camq_remove(&changer->devq, CAMQ_HEAD);
1295
1296         changer->cur_device = softc;
1297
1298         changer->devq.qfrozen_cnt++;
1299         softc->flags |= CD_FLAG_ACTIVE;
1300
1301         /* Just in case this device is waiting */
1302         wakeup(&softc->changer);
1303         xpt_schedule(softc->periph, CAM_PRIORITY_NORMAL);
1304
1305         /*
1306          * Get rid of any pending timeouts, and set a flag to schedule new
1307          * ones so this device gets its full time quantum.
1308          */
1309         if (changer->flags & CHANGER_TIMEOUT_SCHED) {
1310                 callout_stop(&changer->long_handle);
1311                 changer->flags &= ~CHANGER_TIMEOUT_SCHED;
1312         }
1313
1314         if (changer->flags & CHANGER_SHORT_TMOUT_SCHED) {
1315                 callout_stop(&changer->short_handle);
1316                 changer->flags &= ~CHANGER_SHORT_TMOUT_SCHED;
1317         }
1318
1319         /*
1320          * We need to schedule timeouts, but we only do this after the
1321          * first transaction has completed.  This eliminates the changer
1322          * switch time.
1323          */
1324         changer->flags |= CHANGER_NEED_TIMEOUT;
1325 }
1326
1327 static void
1328 cdchangerschedule(struct cd_softc *softc)
1329 {
1330         struct cdchanger *changer;
1331
1332         changer = softc->changer;
1333
1334         /*
1335          * If this is a changer, and this is the current device,
1336          * and this device has at least the minimum time quantum to
1337          * run, see if we can switch it out.
1338          */
1339         if ((softc->flags & CD_FLAG_ACTIVE)
1340          && ((changer->flags & CHANGER_SHORT_TMOUT_SCHED) == 0)
1341          && ((changer->flags & CHANGER_NEED_TIMEOUT) == 0)) {
1342                 /*
1343                  * We try three things here.  The first is that we
1344                  * check to see whether the schedule on completion
1345                  * flag is set.  If it is, we decrement the number
1346                  * of buffers left, and if it's zero, we reschedule.
1347                  * Next, we check to see whether the pending buffer
1348                  * queue is empty and whether there are no
1349                  * outstanding transactions.  If so, we reschedule.
1350                  * Next, we see if the pending buffer queue is empty.
1351                  * If it is, we set the number of buffers left to
1352                  * the current active buffer count and set the
1353                  * schedule on complete flag.
1354                  */
1355                 if (softc->flags & CD_FLAG_SCHED_ON_COMP) {
1356                         if (--softc->bufs_left == 0) {
1357                                 softc->changer->flags |=
1358                                         CHANGER_MANUAL_CALL;
1359                                 softc->flags &= ~CD_FLAG_SCHED_ON_COMP;
1360                                 cdrunchangerqueue(softc->changer);
1361                         }
1362                 } else if ((bioq_first(&softc->bio_queue) == NULL)
1363                         && (softc->outstanding_cmds == 0)) {
1364                         softc->changer->flags |= CHANGER_MANUAL_CALL;
1365                         cdrunchangerqueue(softc->changer);
1366                 }
1367         } else if ((softc->changer->flags & CHANGER_NEED_TIMEOUT)
1368                 && (softc->flags & CD_FLAG_ACTIVE)) {
1369
1370                 /*
1371                  * Now that the first transaction to this
1372                  * particular device has completed, we can go ahead
1373                  * and schedule our timeouts.
1374                  */
1375                 if ((changer->flags & CHANGER_TIMEOUT_SCHED) == 0) {
1376                         callout_reset(&changer->long_handle,
1377                             changer_max_busy_seconds * hz,
1378                             cdrunchangerqueue, changer);
1379                         changer->flags |= CHANGER_TIMEOUT_SCHED;
1380                 } else
1381                         printf("cdchangerschedule: already have a long"
1382                                " timeout!\n");
1383
1384                 if ((changer->flags & CHANGER_SHORT_TMOUT_SCHED) == 0) {
1385                         callout_reset(&changer->short_handle,
1386                             changer_min_busy_seconds * hz,
1387                             cdshorttimeout, changer);
1388                         changer->flags |= CHANGER_SHORT_TMOUT_SCHED;
1389                 } else
1390                         printf("cdchangerschedule: already have a short "
1391                                "timeout!\n");
1392
1393                 /*
1394                  * We just scheduled timeouts, no need to schedule
1395                  * more.
1396                  */
1397                 changer->flags &= ~CHANGER_NEED_TIMEOUT;
1398
1399         }
1400 }
1401
1402 static int
1403 cdrunccb(union ccb *ccb, int (*error_routine)(union ccb *ccb,
1404                                               u_int32_t cam_flags,
1405                                               u_int32_t sense_flags),
1406          u_int32_t cam_flags, u_int32_t sense_flags)
1407 {
1408         struct cd_softc *softc;
1409         struct cam_periph *periph;
1410         int error;
1411
1412         periph = xpt_path_periph(ccb->ccb_h.path);
1413         softc = (struct cd_softc *)periph->softc;
1414
1415         error = cam_periph_runccb(ccb, error_routine, cam_flags, sense_flags,
1416                                   softc->disk->d_devstat);
1417
1418         if (softc->flags & CD_FLAG_CHANGER)
1419                 cdchangerschedule(softc);
1420
1421         return(error);
1422 }
1423
1424 static union ccb *
1425 cdgetccb(struct cam_periph *periph, u_int32_t priority)
1426 {
1427         struct cd_softc *softc;
1428
1429         softc = (struct cd_softc *)periph->softc;
1430
1431         if (softc->flags & CD_FLAG_CHANGER) {
1432                 /*
1433                  * This should work the first time this device is woken up,
1434                  * but just in case it doesn't, we use a while loop.
1435                  */
1436                 while ((softc->flags & CD_FLAG_ACTIVE) == 0) {
1437                         /*
1438                          * If this changer isn't already queued, queue it up.
1439                          */
1440                         if (softc->pinfo.index == CAM_UNQUEUED_INDEX) {
1441                                 softc->pinfo.priority = CAM_PRIORITY_NORMAL;
1442                                 softc->pinfo.generation =
1443                                         ++softc->changer->devq.generation;
1444                                 camq_insert(&softc->changer->devq,
1445                                             (cam_pinfo *)softc);
1446                         }
1447                         if (((softc->changer->flags & CHANGER_TIMEOUT_SCHED)==0)
1448                          && ((softc->changer->flags & CHANGER_NEED_TIMEOUT)==0)
1449                          && ((softc->changer->flags
1450                               & CHANGER_SHORT_TMOUT_SCHED)==0)) {
1451                                 softc->changer->flags |= CHANGER_MANUAL_CALL;
1452                                 cdrunchangerqueue(softc->changer);
1453                         } else
1454                                 cam_periph_sleep(periph, &softc->changer,
1455                                     PRIBIO, "cgticb", 0);
1456                 }
1457         }
1458         return(cam_periph_getccb(periph, priority));
1459 }
1460
1461
1462 /*
1463  * Actually translate the requested transfer into one the physical driver
1464  * can understand.  The transfer is described by a buf and will include
1465  * only one physical transfer.
1466  */
1467 static void
1468 cdstrategy(struct bio *bp)
1469 {
1470         struct cam_periph *periph;
1471         struct cd_softc *softc;
1472
1473         periph = (struct cam_periph *)bp->bio_disk->d_drv1;
1474         cam_periph_lock(periph);
1475         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE,
1476             ("cdstrategy(%p)\n", bp));
1477
1478         softc = (struct cd_softc *)periph->softc;
1479
1480         /*
1481          * If the device has been made invalid, error out
1482          */
1483         if ((softc->flags & CD_FLAG_INVALID)) {
1484                 cam_periph_unlock(periph);
1485                 biofinish(bp, NULL, ENXIO);
1486                 return;
1487         }
1488
1489         /*
1490          * If we don't have valid media, look for it before trying to
1491          * schedule the I/O.
1492          */
1493         if ((softc->flags & CD_FLAG_VALID_MEDIA) == 0) {
1494                 int error;
1495
1496                 error = cdcheckmedia(periph);
1497                 if (error != 0) {
1498                         cam_periph_unlock(periph);
1499                         biofinish(bp, NULL, error);
1500                         return;
1501                 }
1502         }
1503
1504         /*
1505          * Place it in the queue of disk activities for this disk
1506          */
1507         bioq_disksort(&softc->bio_queue, bp);
1508
1509         /*
1510          * Schedule ourselves for performing the work.  We do things
1511          * differently for changers.
1512          */
1513         if ((softc->flags & CD_FLAG_CHANGER) == 0)
1514                 xpt_schedule(periph, CAM_PRIORITY_NORMAL);
1515         else
1516                 cdschedule(periph, CAM_PRIORITY_NORMAL);
1517
1518         cam_periph_unlock(periph);
1519         return;
1520 }
1521
1522 static void
1523 cdstart(struct cam_periph *periph, union ccb *start_ccb)
1524 {
1525         struct cd_softc *softc;
1526         struct bio *bp;
1527         struct ccb_scsiio *csio;
1528         struct scsi_read_capacity_data *rcap;
1529
1530         softc = (struct cd_softc *)periph->softc;
1531
1532         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("entering cdstart\n"));
1533
1534         switch (softc->state) {
1535         case CD_STATE_NORMAL:
1536         {
1537                 bp = bioq_first(&softc->bio_queue);
1538                 if (periph->immediate_priority <= periph->pinfo.priority) {
1539                         start_ccb->ccb_h.ccb_state = CD_CCB_WAITING;
1540
1541                         SLIST_INSERT_HEAD(&periph->ccb_list, &start_ccb->ccb_h,
1542                                           periph_links.sle);
1543                         periph->immediate_priority = CAM_PRIORITY_NONE;
1544                         wakeup(&periph->ccb_list);
1545                 } else if (bp == NULL) {
1546                         if (softc->tur) {
1547                                 softc->tur = 0;
1548                                 csio = &start_ccb->csio;
1549                                 scsi_test_unit_ready(csio,
1550                                      /*retries*/ cd_retry_count,
1551                                      cddone,
1552                                      MSG_SIMPLE_Q_TAG,
1553                                      SSD_FULL_SIZE,
1554                                      cd_timeout);
1555                                 start_ccb->ccb_h.ccb_bp = NULL;
1556                                 start_ccb->ccb_h.ccb_state = CD_CCB_TUR;
1557                                 xpt_action(start_ccb);
1558                         } else
1559                                 xpt_release_ccb(start_ccb);
1560                 } else {
1561                         if (softc->tur) {
1562                                 softc->tur = 0;
1563                                 cam_periph_release_locked(periph);
1564                         }
1565                         bioq_remove(&softc->bio_queue, bp);
1566
1567                         scsi_read_write(&start_ccb->csio,
1568                                         /*retries*/ cd_retry_count,
1569                                         /* cbfcnp */ cddone,
1570                                         MSG_SIMPLE_Q_TAG,
1571                                         /* read */bp->bio_cmd == BIO_READ ?
1572                                         SCSI_RW_READ : SCSI_RW_WRITE,
1573                                         /* byte2 */ 0,
1574                                         /* minimum_cmd_size */ 10,
1575                                         /* lba */ bp->bio_offset /
1576                                           softc->params.blksize,
1577                                         bp->bio_bcount / softc->params.blksize,
1578                                         /* data_ptr */ bp->bio_data,
1579                                         /* dxfer_len */ bp->bio_bcount,
1580                                         /* sense_len */ cd_retry_count ?
1581                                           SSD_FULL_SIZE : SF_NO_PRINT,
1582                                         /* timeout */ cd_timeout);
1583                         /* Use READ CD command for audio tracks. */
1584                         if (softc->params.blksize == 2352) {
1585                                 start_ccb->csio.cdb_io.cdb_bytes[0] = READ_CD;
1586                                 start_ccb->csio.cdb_io.cdb_bytes[9] = 0xf8;
1587                                 start_ccb->csio.cdb_io.cdb_bytes[10] = 0;
1588                                 start_ccb->csio.cdb_io.cdb_bytes[11] = 0;
1589                                 start_ccb->csio.cdb_len = 12;
1590                         }
1591                         start_ccb->ccb_h.ccb_state = CD_CCB_BUFFER_IO;
1592
1593
1594                         LIST_INSERT_HEAD(&softc->pending_ccbs,
1595                                          &start_ccb->ccb_h, periph_links.le);
1596                         softc->outstanding_cmds++;
1597
1598                         /* We expect a unit attention from this device */
1599                         if ((softc->flags & CD_FLAG_RETRY_UA) != 0) {
1600                                 start_ccb->ccb_h.ccb_state |= CD_CCB_RETRY_UA;
1601                                 softc->flags &= ~CD_FLAG_RETRY_UA;
1602                         }
1603
1604                         start_ccb->ccb_h.ccb_bp = bp;
1605                         bp = bioq_first(&softc->bio_queue);
1606
1607                         xpt_action(start_ccb);
1608                 }
1609                 if (bp != NULL || softc->tur ||
1610                     periph->immediate_priority != CAM_PRIORITY_NONE) {
1611                         /* Have more work to do, so ensure we stay scheduled */
1612                         xpt_schedule(periph, min(CAM_PRIORITY_NORMAL,
1613                             periph->immediate_priority));
1614                 }
1615                 break;
1616         }
1617         case CD_STATE_PROBE:
1618         {
1619
1620                 rcap = (struct scsi_read_capacity_data *)malloc(sizeof(*rcap),
1621                     M_SCSICD, M_NOWAIT | M_ZERO);
1622                 if (rcap == NULL) {
1623                         xpt_print(periph->path,
1624                             "cdstart: Couldn't malloc read_capacity data\n");
1625                         /* cd_free_periph??? */
1626                         break;
1627                 }
1628                 csio = &start_ccb->csio;
1629                 scsi_read_capacity(csio,
1630                                    /*retries*/ cd_retry_count,
1631                                    cddone,
1632                                    MSG_SIMPLE_Q_TAG,
1633                                    rcap,
1634                                    SSD_FULL_SIZE,
1635                                    /*timeout*/20000);
1636                 start_ccb->ccb_h.ccb_bp = NULL;
1637                 start_ccb->ccb_h.ccb_state = CD_CCB_PROBE;
1638                 xpt_action(start_ccb);
1639                 break;
1640         }
1641         }
1642 }
1643
1644 static void
1645 cddone(struct cam_periph *periph, union ccb *done_ccb)
1646 {
1647         struct cd_softc *softc;
1648         struct ccb_scsiio *csio;
1649
1650         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("entering cddone\n"));
1651
1652         softc = (struct cd_softc *)periph->softc;
1653         csio = &done_ccb->csio;
1654
1655         switch (csio->ccb_h.ccb_state & CD_CCB_TYPE_MASK) {
1656         case CD_CCB_BUFFER_IO:
1657         {
1658                 struct bio      *bp;
1659                 int             error;
1660
1661                 bp = (struct bio *)done_ccb->ccb_h.ccb_bp;
1662                 error = 0;
1663
1664                 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1665                         int sf;
1666
1667                         if ((done_ccb->ccb_h.ccb_state & CD_CCB_RETRY_UA) != 0)
1668                                 sf = SF_RETRY_UA;
1669                         else
1670                                 sf = 0;
1671
1672                         error = cderror(done_ccb, CAM_RETRY_SELTO, sf);
1673                         if (error == ERESTART) {
1674                                 /*
1675                                  * A retry was scheuled, so
1676                                  * just return.
1677                                  */
1678                                 return;
1679                         }
1680                 }
1681
1682                 if (error != 0) {
1683                         xpt_print(periph->path,
1684                             "cddone: got error %#x back\n", error);
1685                         bioq_flush(&softc->bio_queue, NULL, EIO);
1686                         bp->bio_resid = bp->bio_bcount;
1687                         bp->bio_error = error;
1688                         bp->bio_flags |= BIO_ERROR;
1689                         if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
1690                                 cam_release_devq(done_ccb->ccb_h.path,
1691                                          /*relsim_flags*/0,
1692                                          /*reduction*/0,
1693                                          /*timeout*/0,
1694                                          /*getcount_only*/0);
1695
1696                 } else {
1697                         bp->bio_resid = csio->resid;
1698                         bp->bio_error = 0;
1699                         if (bp->bio_resid != 0) {
1700                                 /*
1701                                  * Short transfer ???
1702                                  * XXX: not sure this is correct for partial
1703                                  * transfers at EOM
1704                                  */
1705                                 bp->bio_flags |= BIO_ERROR;
1706                         }
1707                 }
1708
1709                 LIST_REMOVE(&done_ccb->ccb_h, periph_links.le);
1710                 softc->outstanding_cmds--;
1711
1712                 if (softc->flags & CD_FLAG_CHANGER)
1713                         cdchangerschedule(softc);
1714
1715                 biofinish(bp, NULL, 0);
1716                 break;
1717         }
1718         case CD_CCB_PROBE:
1719         {
1720                 struct     scsi_read_capacity_data *rdcap;
1721                 char       announce_buf[120]; /*
1722                                                * Currently (9/30/97) the
1723                                                * longest possible announce
1724                                                * buffer is 108 bytes, for the
1725                                                * first error case below.
1726                                                * That is 39 bytes for the
1727                                                * basic string, 16 bytes for the
1728                                                * biggest sense key (hardware
1729                                                * error), 52 bytes for the
1730                                                * text of the largest sense
1731                                                * qualifier valid for a CDROM,
1732                                                * (0x72, 0x03 or 0x04,
1733                                                * 0x03), and one byte for the
1734                                                * null terminating character.
1735                                                * To allow for longer strings,
1736                                                * the announce buffer is 120
1737                                                * bytes.
1738                                                */
1739                 struct     cd_params *cdp;
1740                 int error;
1741
1742                 cdp = &softc->params;
1743
1744                 rdcap = (struct scsi_read_capacity_data *)csio->data_ptr;
1745
1746                 cdp->disksize = scsi_4btoul (rdcap->addr) + 1;
1747                 cdp->blksize = scsi_4btoul (rdcap->length);
1748
1749                 /*
1750                  * Retry any UNIT ATTENTION type errors.  They
1751                  * are expected at boot.
1752                  */
1753                 if ((csio->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP ||
1754                     (error = cderror(done_ccb, CAM_RETRY_SELTO,
1755                                 SF_RETRY_UA | SF_NO_PRINT)) == 0) {
1756
1757                         snprintf(announce_buf, sizeof(announce_buf),
1758                                 "cd present [%lu x %lu byte records]",
1759                                 cdp->disksize, (u_long)cdp->blksize);
1760
1761                 } else {
1762                         if (error == ERESTART) {
1763                                 /*
1764                                  * A retry was scheuled, so
1765                                  * just return.
1766                                  */
1767                                 return;
1768                         } else {
1769                                 int asc, ascq;
1770                                 int sense_key, error_code;
1771                                 int have_sense;
1772                                 cam_status status;
1773                                 struct ccb_getdev cgd;
1774
1775                                 /* Don't wedge this device's queue */
1776                                 if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
1777                                         cam_release_devq(done_ccb->ccb_h.path,
1778                                                  /*relsim_flags*/0,
1779                                                  /*reduction*/0,
1780                                                  /*timeout*/0,
1781                                                  /*getcount_only*/0);
1782
1783                                 status = done_ccb->ccb_h.status;
1784
1785                                 xpt_setup_ccb(&cgd.ccb_h,
1786                                               done_ccb->ccb_h.path,
1787                                               CAM_PRIORITY_NORMAL);
1788                                 cgd.ccb_h.func_code = XPT_GDEV_TYPE;
1789                                 xpt_action((union ccb *)&cgd);
1790
1791                                 if (scsi_extract_sense_ccb(done_ccb,
1792                                     &error_code, &sense_key, &asc, &ascq))
1793                                         have_sense = TRUE;
1794                                 else
1795                                         have_sense = FALSE;
1796
1797                                 /*
1798                                  * Attach to anything that claims to be a
1799                                  * CDROM or WORM device, as long as it
1800                                  * doesn't return a "Logical unit not
1801                                  * supported" (0x25) error.
1802                                  */
1803                                 if ((have_sense) && (asc != 0x25)
1804                                  && (error_code == SSD_CURRENT_ERROR)) {
1805                                         const char *sense_key_desc;
1806                                         const char *asc_desc;
1807
1808                                         scsi_sense_desc(sense_key, asc, ascq,
1809                                                         &cgd.inq_data,
1810                                                         &sense_key_desc,
1811                                                         &asc_desc);
1812                                         snprintf(announce_buf,
1813                                             sizeof(announce_buf),
1814                                                 "Attempt to query device "
1815                                                 "size failed: %s, %s",
1816                                                 sense_key_desc,
1817                                                 asc_desc);
1818                                 } else if ((have_sense == 0)
1819                                       && ((status & CAM_STATUS_MASK) ==
1820                                            CAM_SCSI_STATUS_ERROR)
1821                                       && (csio->scsi_status ==
1822                                           SCSI_STATUS_BUSY)) {
1823                                         snprintf(announce_buf,
1824                                             sizeof(announce_buf),
1825                                             "Attempt to query device "
1826                                             "size failed: SCSI Status: %s",
1827                                             scsi_status_string(csio));
1828                                 } else if (SID_TYPE(&cgd.inq_data) == T_CDROM) {
1829                                         /*
1830                                          * We only print out an error for
1831                                          * CDROM type devices.  For WORM
1832                                          * devices, we don't print out an
1833                                          * error since a few WORM devices
1834                                          * don't support CDROM commands.
1835                                          * If we have sense information, go
1836                                          * ahead and print it out.
1837                                          * Otherwise, just say that we
1838                                          * couldn't attach.
1839                                          */
1840
1841                                         /*
1842                                          * Just print out the error, not
1843                                          * the full probe message, when we
1844                                          * don't attach.
1845                                          */
1846                                         if (have_sense)
1847                                                 scsi_sense_print(
1848                                                         &done_ccb->csio);
1849                                         else {
1850                                                 xpt_print(periph->path,
1851                                                     "got CAM status %#x\n",
1852                                                     done_ccb->ccb_h.status);
1853                                         }
1854                                         xpt_print(periph->path, "fatal error, "
1855                                             "failed to attach to device\n");
1856                                         /*
1857                                          * Invalidate this peripheral.
1858                                          */
1859                                         cam_periph_invalidate(periph);
1860
1861                                         announce_buf[0] = '\0';
1862                                 } else {
1863
1864                                         /*
1865                                          * Invalidate this peripheral.
1866                                          */
1867                                         cam_periph_invalidate(periph);
1868                                         announce_buf[0] = '\0';
1869                                 }
1870                         }
1871                 }
1872                 free(rdcap, M_SCSICD);
1873                 if (announce_buf[0] != '\0') {
1874                         xpt_announce_periph(periph, announce_buf);
1875                         xpt_announce_quirks(periph, softc->quirks,
1876                             CD_Q_BIT_STRING);
1877                         if (softc->flags & CD_FLAG_CHANGER)
1878                                 cdchangerschedule(softc);
1879                         /*
1880                          * Create our sysctl variables, now that we know
1881                          * we have successfully attached.
1882                          */
1883                         taskqueue_enqueue(taskqueue_thread,&softc->sysctl_task);
1884                 }
1885                 softc->state = CD_STATE_NORMAL;
1886                 /*
1887                  * Since our peripheral may be invalidated by an error
1888                  * above or an external event, we must release our CCB
1889                  * before releasing the probe lock on the peripheral.
1890                  * The peripheral will only go away once the last lock
1891                  * is removed, and we need it around for the CCB release
1892                  * operation.
1893                  */
1894                 xpt_release_ccb(done_ccb);
1895                 cam_periph_unhold(periph);
1896                 return;
1897         }
1898         case CD_CCB_WAITING:
1899         {
1900                 /* Caller will release the CCB */
1901                 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE,
1902                           ("trying to wakeup ccbwait\n"));
1903
1904                 wakeup(&done_ccb->ccb_h.cbfcnp);
1905                 return;
1906         }
1907         case CD_CCB_TUR:
1908         {
1909                 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1910
1911                         if (cderror(done_ccb, CAM_RETRY_SELTO,
1912                             SF_RETRY_UA | SF_NO_RECOVERY | SF_NO_PRINT) ==
1913                             ERESTART)
1914                                 return;
1915                         if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
1916                                 cam_release_devq(done_ccb->ccb_h.path,
1917                                                  /*relsim_flags*/0,
1918                                                  /*reduction*/0,
1919                                                  /*timeout*/0,
1920                                                  /*getcount_only*/0);
1921                 }
1922                 xpt_release_ccb(done_ccb);
1923                 cam_periph_release_locked(periph);
1924                 return;
1925         }
1926         default:
1927                 break;
1928         }
1929         xpt_release_ccb(done_ccb);
1930 }
1931
1932 static union cd_pages *
1933 cdgetpage(struct cd_mode_params *mode_params)
1934 {
1935         union cd_pages *page;
1936
1937         if (mode_params->cdb_size == 10)
1938                 page = (union cd_pages *)find_mode_page_10(
1939                         (struct scsi_mode_header_10 *)mode_params->mode_buf);
1940         else
1941                 page = (union cd_pages *)find_mode_page_6(
1942                         (struct scsi_mode_header_6 *)mode_params->mode_buf);
1943
1944         return (page);
1945 }
1946
1947 static int
1948 cdgetpagesize(int page_num)
1949 {
1950         int i;
1951
1952         for (i = 0; i < (sizeof(cd_page_size_table)/
1953              sizeof(cd_page_size_table[0])); i++) {
1954                 if (cd_page_size_table[i].page == page_num)
1955                         return (cd_page_size_table[i].page_size);
1956         }
1957
1958         return (-1);
1959 }
1960
1961 static int
1962 cdioctl(struct disk *dp, u_long cmd, void *addr, int flag, struct thread *td)
1963 {
1964
1965         struct  cam_periph *periph;
1966         struct  cd_softc *softc;
1967         int     nocopyout, error = 0;
1968
1969         periph = (struct cam_periph *)dp->d_drv1;
1970         cam_periph_lock(periph);
1971
1972         softc = (struct cd_softc *)periph->softc;
1973
1974         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE,
1975             ("cdioctl(%#lx)\n", cmd));
1976
1977         if ((error = cam_periph_hold(periph, PRIBIO | PCATCH)) != 0) {
1978                 cam_periph_unlock(periph);
1979                 cam_periph_release(periph);
1980                 return (error);
1981         }
1982
1983         /*
1984          * If we don't have media loaded, check for it.  If still don't
1985          * have media loaded, we can only do a load or eject.
1986          *
1987          * We only care whether media is loaded if this is a cd-specific ioctl
1988          * (thus the IOCGROUP check below).  Note that this will break if
1989          * anyone adds any ioctls into the switch statement below that don't
1990          * have their ioctl group set to 'c'.
1991          */
1992         if (((softc->flags & CD_FLAG_VALID_MEDIA) == 0)
1993          && ((cmd != CDIOCCLOSE)
1994           && (cmd != CDIOCEJECT))
1995          && (IOCGROUP(cmd) == 'c')) {
1996                 error = cdcheckmedia(periph);
1997                 if (error != 0) {
1998                         cam_periph_unhold(periph);
1999                         cam_periph_unlock(periph);
2000                         return (error);
2001                 }
2002         }
2003         /*
2004          * Drop the lock here so later mallocs can use WAITOK.  The periph
2005          * is essentially locked still with the cam_periph_hold call above.
2006          */
2007         cam_periph_unlock(periph);
2008
2009         nocopyout = 0;
2010         switch (cmd) {
2011
2012         case CDIOCPLAYTRACKS:
2013                 {
2014                         struct ioc_play_track *args
2015                             = (struct ioc_play_track *) addr;
2016                         struct cd_mode_params params;
2017                         union cd_pages *page;
2018
2019                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2020                         params.mode_buf = malloc(params.alloc_len, M_SCSICD,
2021                                                  M_WAITOK | M_ZERO);
2022
2023                         cam_periph_lock(periph);
2024                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2025                                   ("trying to do CDIOCPLAYTRACKS\n"));
2026
2027                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2028                         if (error) {
2029                                 free(params.mode_buf, M_SCSICD);
2030                                 cam_periph_unlock(periph);
2031                                 break;
2032                         }
2033                         page = cdgetpage(&params);
2034
2035                         page->audio.flags &= ~CD_PA_SOTC;
2036                         page->audio.flags |= CD_PA_IMMED;
2037                         error = cdsetmode(periph, &params);
2038                         free(params.mode_buf, M_SCSICD);
2039                         if (error) {
2040                                 cam_periph_unlock(periph);
2041                                 break;
2042                         }
2043
2044                         /*
2045                          * This was originally implemented with the PLAY
2046                          * AUDIO TRACK INDEX command, but that command was
2047                          * deprecated after SCSI-2.  Most (all?) SCSI CDROM
2048                          * drives support it but ATAPI and ATAPI-derivative
2049                          * drives don't seem to support it.  So we keep a
2050                          * cache of the table of contents and translate
2051                          * track numbers to MSF format.
2052                          */
2053                         if (softc->flags & CD_FLAG_VALID_TOC) {
2054                                 union msf_lba *sentry, *eentry;
2055                                 int st, et;
2056
2057                                 if (args->end_track <
2058                                     softc->toc.header.ending_track + 1)
2059                                         args->end_track++;
2060                                 if (args->end_track >
2061                                     softc->toc.header.ending_track + 1)
2062                                         args->end_track =
2063                                             softc->toc.header.ending_track + 1;
2064                                 st = args->start_track -
2065                                         softc->toc.header.starting_track;
2066                                 et = args->end_track -
2067                                         softc->toc.header.starting_track;
2068                                 if ((st < 0)
2069                                  || (et < 0)
2070                                  || (st > (softc->toc.header.ending_track -
2071                                      softc->toc.header.starting_track))) {
2072                                         error = EINVAL;
2073                                         cam_periph_unlock(periph);
2074                                         break;
2075                                 }
2076                                 sentry = &softc->toc.entries[st].addr;
2077                                 eentry = &softc->toc.entries[et].addr;
2078                                 error = cdplaymsf(periph,
2079                                                   sentry->msf.minute,
2080                                                   sentry->msf.second,
2081                                                   sentry->msf.frame,
2082                                                   eentry->msf.minute,
2083                                                   eentry->msf.second,
2084                                                   eentry->msf.frame);
2085                         } else {
2086                                 /*
2087                                  * If we don't have a valid TOC, try the
2088                                  * play track index command.  It is part of
2089                                  * the SCSI-2 spec, but was removed in the
2090                                  * MMC specs.  ATAPI and ATAPI-derived
2091                                  * drives don't support it.
2092                                  */
2093                                 if (softc->quirks & CD_Q_BCD_TRACKS) {
2094                                         args->start_track =
2095                                                 bin2bcd(args->start_track);
2096                                         args->end_track =
2097                                                 bin2bcd(args->end_track);
2098                                 }
2099                                 error = cdplaytracks(periph,
2100                                                      args->start_track,
2101                                                      args->start_index,
2102                                                      args->end_track,
2103                                                      args->end_index);
2104                         }
2105                         cam_periph_unlock(periph);
2106                 }
2107                 break;
2108         case CDIOCPLAYMSF:
2109                 {
2110                         struct ioc_play_msf *args
2111                                 = (struct ioc_play_msf *) addr;
2112                         struct cd_mode_params params;
2113                         union cd_pages *page;
2114
2115                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2116                         params.mode_buf = malloc(params.alloc_len, M_SCSICD,
2117                                                  M_WAITOK | M_ZERO);
2118
2119                         cam_periph_lock(periph);
2120                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2121                                   ("trying to do CDIOCPLAYMSF\n"));
2122
2123                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2124                         if (error) {
2125                                 free(params.mode_buf, M_SCSICD);
2126                                 cam_periph_unlock(periph);
2127                                 break;
2128                         }
2129                         page = cdgetpage(&params);
2130
2131                         page->audio.flags &= ~CD_PA_SOTC;
2132                         page->audio.flags |= CD_PA_IMMED;
2133                         error = cdsetmode(periph, &params);
2134                         free(params.mode_buf, M_SCSICD);
2135                         if (error) {
2136                                 cam_periph_unlock(periph);
2137                                 break;
2138                         }
2139                         error = cdplaymsf(periph,
2140                                           args->start_m,
2141                                           args->start_s,
2142                                           args->start_f,
2143                                           args->end_m,
2144                                           args->end_s,
2145                                           args->end_f);
2146                         cam_periph_unlock(periph);
2147                 }
2148                 break;
2149         case CDIOCPLAYBLOCKS:
2150                 {
2151                         struct ioc_play_blocks *args
2152                                 = (struct ioc_play_blocks *) addr;
2153                         struct cd_mode_params params;
2154                         union cd_pages *page;
2155
2156                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2157                         params.mode_buf = malloc(params.alloc_len, M_SCSICD,
2158                                                  M_WAITOK | M_ZERO);
2159
2160                         cam_periph_lock(periph);
2161                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2162                                   ("trying to do CDIOCPLAYBLOCKS\n"));
2163
2164
2165                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2166                         if (error) {
2167                                 free(params.mode_buf, M_SCSICD);
2168                                 cam_periph_unlock(periph);
2169                                 break;
2170                         }
2171                         page = cdgetpage(&params);
2172
2173                         page->audio.flags &= ~CD_PA_SOTC;
2174                         page->audio.flags |= CD_PA_IMMED;
2175                         error = cdsetmode(periph, &params);
2176                         free(params.mode_buf, M_SCSICD);
2177                         if (error) {
2178                                 cam_periph_unlock(periph);
2179                                 break;
2180                         }
2181                         error = cdplay(periph, args->blk, args->len);
2182                         cam_periph_unlock(periph);
2183                 }
2184                 break;
2185         case CDIOCREADSUBCHANNEL_SYSSPACE:
2186                 nocopyout = 1;
2187                 /* Fallthrough */
2188         case CDIOCREADSUBCHANNEL:
2189                 {
2190                         struct ioc_read_subchannel *args
2191                                 = (struct ioc_read_subchannel *) addr;
2192                         struct cd_sub_channel_info *data;
2193                         u_int32_t len = args->data_len;
2194
2195                         data = malloc(sizeof(struct cd_sub_channel_info),
2196                                       M_SCSICD, M_WAITOK | M_ZERO);
2197
2198                         cam_periph_lock(periph);
2199                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2200                                   ("trying to do CDIOCREADSUBCHANNEL\n"));
2201
2202                         if ((len > sizeof(struct cd_sub_channel_info)) ||
2203                             (len < sizeof(struct cd_sub_channel_header))) {
2204                                 printf(
2205                                         "scsi_cd: cdioctl: "
2206                                         "cdioreadsubchannel: error, len=%d\n",
2207                                         len);
2208                                 error = EINVAL;
2209                                 free(data, M_SCSICD);
2210                                 cam_periph_unlock(periph);
2211                                 break;
2212                         }
2213
2214                         if (softc->quirks & CD_Q_BCD_TRACKS)
2215                                 args->track = bin2bcd(args->track);
2216
2217                         error = cdreadsubchannel(periph, args->address_format,
2218                                 args->data_format, args->track, data, len);
2219
2220                         if (error) {
2221                                 free(data, M_SCSICD);
2222                                 cam_periph_unlock(periph);
2223                                 break;
2224                         }
2225                         if (softc->quirks & CD_Q_BCD_TRACKS)
2226                                 data->what.track_info.track_number =
2227                                     bcd2bin(data->what.track_info.track_number);
2228                         len = min(len, ((data->header.data_len[0] << 8) +
2229                                 data->header.data_len[1] +
2230                                 sizeof(struct cd_sub_channel_header)));
2231                         cam_periph_unlock(periph);
2232                         if (nocopyout == 0) {
2233                                 if (copyout(data, args->data, len) != 0) {
2234                                         error = EFAULT;
2235                                 }
2236                         } else {
2237                                 bcopy(data, args->data, len);
2238                         }
2239                         free(data, M_SCSICD);
2240                 }
2241                 break;
2242
2243         case CDIOREADTOCHEADER:
2244                 {
2245                         struct ioc_toc_header *th;
2246
2247                         th = malloc(sizeof(struct ioc_toc_header), M_SCSICD,
2248                                     M_WAITOK | M_ZERO);
2249
2250                         cam_periph_lock(periph);
2251                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2252                                   ("trying to do CDIOREADTOCHEADER\n"));
2253
2254                         error = cdreadtoc(periph, 0, 0, (u_int8_t *)th,
2255                                           sizeof (*th), /*sense_flags*/SF_NO_PRINT);
2256                         if (error) {
2257                                 free(th, M_SCSICD);
2258                                 cam_periph_unlock(periph);
2259                                 break;
2260                         }
2261                         if (softc->quirks & CD_Q_BCD_TRACKS) {
2262                                 /* we are going to have to convert the BCD
2263                                  * encoding on the cd to what is expected
2264                                  */
2265                                 th->starting_track =
2266                                         bcd2bin(th->starting_track);
2267                                 th->ending_track = bcd2bin(th->ending_track);
2268                         }
2269                         th->len = ntohs(th->len);
2270                         bcopy(th, addr, sizeof(*th));
2271                         free(th, M_SCSICD);
2272                         cam_periph_unlock(periph);
2273                 }
2274                 break;
2275         case CDIOREADTOCENTRYS:
2276                 {
2277                         struct cd_tocdata *data;
2278                         struct cd_toc_single *lead;
2279                         struct ioc_read_toc_entry *te =
2280                                 (struct ioc_read_toc_entry *) addr;
2281                         struct ioc_toc_header *th;
2282                         u_int32_t len, readlen, idx, num;
2283                         u_int32_t starting_track = te->starting_track;
2284
2285                         data = malloc(sizeof(*data), M_SCSICD, M_WAITOK | M_ZERO);
2286                         lead = malloc(sizeof(*lead), M_SCSICD, M_WAITOK | M_ZERO);
2287
2288                         cam_periph_lock(periph);
2289                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2290                                   ("trying to do CDIOREADTOCENTRYS\n"));
2291
2292                         if (te->data_len < sizeof(struct cd_toc_entry)
2293                          || (te->data_len % sizeof(struct cd_toc_entry)) != 0
2294                          || (te->address_format != CD_MSF_FORMAT
2295                           && te->address_format != CD_LBA_FORMAT)) {
2296                                 error = EINVAL;
2297                                 printf("scsi_cd: error in readtocentries, "
2298                                        "returning EINVAL\n");
2299                                 free(data, M_SCSICD);
2300                                 free(lead, M_SCSICD);
2301                                 cam_periph_unlock(periph);
2302                                 break;
2303                         }
2304
2305                         th = &data->header;
2306                         error = cdreadtoc(periph, 0, 0, (u_int8_t *)th,
2307                                           sizeof (*th), /*sense_flags*/0);
2308                         if (error) {
2309                                 free(data, M_SCSICD);
2310                                 free(lead, M_SCSICD);
2311                                 cam_periph_unlock(periph);
2312                                 break;
2313                         }
2314
2315                         if (softc->quirks & CD_Q_BCD_TRACKS) {
2316                                 /* we are going to have to convert the BCD
2317                                  * encoding on the cd to what is expected
2318                                  */
2319                                 th->starting_track =
2320                                     bcd2bin(th->starting_track);
2321                                 th->ending_track = bcd2bin(th->ending_track);
2322                         }
2323
2324                         if (starting_track == 0)
2325                                 starting_track = th->starting_track;
2326                         else if (starting_track == LEADOUT)
2327                                 starting_track = th->ending_track + 1;
2328                         else if (starting_track < th->starting_track ||
2329                                  starting_track > th->ending_track + 1) {
2330                                 printf("scsi_cd: error in readtocentries, "
2331                                        "returning EINVAL\n");
2332                                 free(data, M_SCSICD);
2333                                 free(lead, M_SCSICD);
2334                                 cam_periph_unlock(periph);
2335                                 error = EINVAL;
2336                                 break;
2337                         }
2338
2339                         /* calculate reading length without leadout entry */
2340                         readlen = (th->ending_track - starting_track + 1) *
2341                                   sizeof(struct cd_toc_entry);
2342
2343                         /* and with leadout entry */
2344                         len = readlen + sizeof(struct cd_toc_entry);
2345                         if (te->data_len < len) {
2346                                 len = te->data_len;
2347                                 if (readlen > len)
2348                                         readlen = len;
2349                         }
2350                         if (len > sizeof(data->entries)) {
2351                                 printf("scsi_cd: error in readtocentries, "
2352                                        "returning EINVAL\n");
2353                                 error = EINVAL;
2354                                 free(data, M_SCSICD);
2355                                 free(lead, M_SCSICD);
2356                                 cam_periph_unlock(periph);
2357                                 break;
2358                         }
2359                         num = len / sizeof(struct cd_toc_entry);
2360
2361                         if (readlen > 0) {
2362                                 error = cdreadtoc(periph, te->address_format,
2363                                                   starting_track,
2364                                                   (u_int8_t *)data,
2365                                                   readlen + sizeof (*th),
2366                                                   /*sense_flags*/0);
2367                                 if (error) {
2368                                         free(data, M_SCSICD);
2369                                         free(lead, M_SCSICD);
2370                                         cam_periph_unlock(periph);
2371                                         break;
2372                                 }
2373                         }
2374
2375                         /* make leadout entry if needed */
2376                         idx = starting_track + num - 1;
2377                         if (softc->quirks & CD_Q_BCD_TRACKS)
2378                                 th->ending_track = bcd2bin(th->ending_track);
2379                         if (idx == th->ending_track + 1) {
2380                                 error = cdreadtoc(periph, te->address_format,
2381                                                   LEADOUT, (u_int8_t *)lead,
2382                                                   sizeof(*lead),
2383                                                   /*sense_flags*/0);
2384                                 if (error) {
2385                                         free(data, M_SCSICD);
2386                                         free(lead, M_SCSICD);
2387                                         cam_periph_unlock(periph);
2388                                         break;
2389                                 }
2390                                 data->entries[idx - starting_track] =
2391                                         lead->entry;
2392                         }
2393                         if (softc->quirks & CD_Q_BCD_TRACKS) {
2394                                 for (idx = 0; idx < num - 1; idx++) {
2395                                         data->entries[idx].track =
2396                                             bcd2bin(data->entries[idx].track);
2397                                 }
2398                         }
2399
2400                         cam_periph_unlock(periph);
2401                         error = copyout(data->entries, te->data, len);
2402                         free(data, M_SCSICD);
2403                         free(lead, M_SCSICD);
2404                 }
2405                 break;
2406         case CDIOREADTOCENTRY:
2407                 {
2408                         struct cd_toc_single *data;
2409                         struct ioc_read_toc_single_entry *te =
2410                                 (struct ioc_read_toc_single_entry *) addr;
2411                         struct ioc_toc_header *th;
2412                         u_int32_t track;
2413
2414                         data = malloc(sizeof(*data), M_SCSICD, M_WAITOK | M_ZERO);
2415
2416                         cam_periph_lock(periph);
2417                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2418                                   ("trying to do CDIOREADTOCENTRY\n"));
2419
2420                         if (te->address_format != CD_MSF_FORMAT
2421                             && te->address_format != CD_LBA_FORMAT) {
2422                                 printf("error in readtocentry, "
2423                                        " returning EINVAL\n");
2424                                 free(data, M_SCSICD);
2425                                 error = EINVAL;
2426                                 cam_periph_unlock(periph);
2427                                 break;
2428                         }
2429
2430                         th = &data->header;
2431                         error = cdreadtoc(periph, 0, 0, (u_int8_t *)th,
2432                                           sizeof (*th), /*sense_flags*/0);
2433                         if (error) {
2434                                 free(data, M_SCSICD);
2435                                 cam_periph_unlock(periph);
2436                                 break;
2437                         }
2438
2439                         if (softc->quirks & CD_Q_BCD_TRACKS) {
2440                                 /* we are going to have to convert the BCD
2441                                  * encoding on the cd to what is expected
2442                                  */
2443                                 th->starting_track =
2444                                     bcd2bin(th->starting_track);
2445                                 th->ending_track = bcd2bin(th->ending_track);
2446                         }
2447                         track = te->track;
2448                         if (track == 0)
2449                                 track = th->starting_track;
2450                         else if (track == LEADOUT)
2451                                 /* OK */;
2452                         else if (track < th->starting_track ||
2453                                  track > th->ending_track + 1) {
2454                                 printf("error in readtocentry, "
2455                                        " returning EINVAL\n");
2456                                 free(data, M_SCSICD);
2457                                 error = EINVAL;
2458                                 cam_periph_unlock(periph);
2459                                 break;
2460                         }
2461
2462                         error = cdreadtoc(periph, te->address_format, track,
2463                                           (u_int8_t *)data, sizeof(*data),
2464                                           /*sense_flags*/0);
2465                         if (error) {
2466                                 free(data, M_SCSICD);
2467                                 cam_periph_unlock(periph);
2468                                 break;
2469                         }
2470
2471                         if (softc->quirks & CD_Q_BCD_TRACKS)
2472                                 data->entry.track = bcd2bin(data->entry.track);
2473                         bcopy(&data->entry, &te->entry,
2474                               sizeof(struct cd_toc_entry));
2475                         free(data, M_SCSICD);
2476                         cam_periph_unlock(periph);
2477                 }
2478                 break;
2479         case CDIOCSETPATCH:
2480                 {
2481                         struct ioc_patch *arg = (struct ioc_patch *)addr;
2482                         struct cd_mode_params params;
2483                         union cd_pages *page;
2484
2485                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2486                         params.mode_buf = malloc(params.alloc_len, M_SCSICD,
2487                                                  M_WAITOK | M_ZERO);
2488
2489                         cam_periph_lock(periph);
2490                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2491                                   ("trying to do CDIOCSETPATCH\n"));
2492
2493                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2494                         if (error) {
2495                                 free(params.mode_buf, M_SCSICD);
2496                                 cam_periph_unlock(periph);
2497                                 break;
2498                         }
2499                         page = cdgetpage(&params);
2500
2501                         page->audio.port[LEFT_PORT].channels =
2502                                 arg->patch[0];
2503                         page->audio.port[RIGHT_PORT].channels =
2504                                 arg->patch[1];
2505                         page->audio.port[2].channels = arg->patch[2];
2506                         page->audio.port[3].channels = arg->patch[3];
2507                         error = cdsetmode(periph, &params);
2508                         free(params.mode_buf, M_SCSICD);
2509                         cam_periph_unlock(periph);
2510                 }
2511                 break;
2512         case CDIOCGETVOL:
2513                 {
2514                         struct ioc_vol *arg = (struct ioc_vol *) addr;
2515                         struct cd_mode_params params;
2516                         union cd_pages *page;
2517
2518                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2519                         params.mode_buf = malloc(params.alloc_len, M_SCSICD,
2520                                                  M_WAITOK | M_ZERO);
2521
2522                         cam_periph_lock(periph);
2523                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2524                                   ("trying to do CDIOCGETVOL\n"));
2525
2526                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2527                         if (error) {
2528                                 free(params.mode_buf, M_SCSICD);
2529                                 cam_periph_unlock(periph);
2530                                 break;
2531                         }
2532                         page = cdgetpage(&params);
2533
2534                         arg->vol[LEFT_PORT] =
2535                                 page->audio.port[LEFT_PORT].volume;
2536                         arg->vol[RIGHT_PORT] =
2537                                 page->audio.port[RIGHT_PORT].volume;
2538                         arg->vol[2] = page->audio.port[2].volume;
2539                         arg->vol[3] = page->audio.port[3].volume;
2540                         free(params.mode_buf, M_SCSICD);
2541                         cam_periph_unlock(periph);
2542                 }
2543                 break;
2544         case CDIOCSETVOL:
2545                 {
2546                         struct ioc_vol *arg = (struct ioc_vol *) addr;
2547                         struct cd_mode_params params;
2548                         union cd_pages *page;
2549
2550                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2551                         params.mode_buf = malloc(params.alloc_len, M_SCSICD,
2552                                                  M_WAITOK | M_ZERO);
2553
2554                         cam_periph_lock(periph);
2555                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2556                                   ("trying to do CDIOCSETVOL\n"));
2557
2558                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2559                         if (error) {
2560                                 free(params.mode_buf, M_SCSICD);
2561                                 cam_periph_unlock(periph);
2562                                 break;
2563                         }
2564                         page = cdgetpage(&params);
2565
2566                         page->audio.port[LEFT_PORT].channels = CHANNEL_0;
2567                         page->audio.port[LEFT_PORT].volume =
2568                                 arg->vol[LEFT_PORT];
2569                         page->audio.port[RIGHT_PORT].channels = CHANNEL_1;
2570                         page->audio.port[RIGHT_PORT].volume =
2571                                 arg->vol[RIGHT_PORT];
2572                         page->audio.port[2].volume = arg->vol[2];
2573                         page->audio.port[3].volume = arg->vol[3];
2574                         error = cdsetmode(periph, &params);
2575                         cam_periph_unlock(periph);
2576                         free(params.mode_buf, M_SCSICD);
2577                 }
2578                 break;
2579         case CDIOCSETMONO:
2580                 {
2581                         struct cd_mode_params params;
2582                         union cd_pages *page;
2583
2584                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2585                         params.mode_buf = malloc(params.alloc_len, M_SCSICD,
2586                                                  M_WAITOK | M_ZERO);
2587
2588                         cam_periph_lock(periph);
2589                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2590                                   ("trying to do CDIOCSETMONO\n"));
2591
2592                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2593                         if (error) {
2594                                 free(params.mode_buf, M_SCSICD);
2595                                 cam_periph_unlock(periph);
2596                                 break;
2597                         }
2598                         page = cdgetpage(&params);
2599
2600                         page->audio.port[LEFT_PORT].channels =
2601                                 LEFT_CHANNEL | RIGHT_CHANNEL;
2602                         page->audio.port[RIGHT_PORT].channels =
2603                                 LEFT_CHANNEL | RIGHT_CHANNEL;
2604                         page->audio.port[2].channels = 0;
2605                         page->audio.port[3].channels = 0;
2606                         error = cdsetmode(periph, &params);
2607                         cam_periph_unlock(periph);
2608                         free(params.mode_buf, M_SCSICD);
2609                 }
2610                 break;
2611         case CDIOCSETSTEREO:
2612                 {
2613                         struct cd_mode_params params;
2614                         union cd_pages *page;
2615
2616                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2617                         params.mode_buf = malloc(params.alloc_len, M_SCSICD,
2618                                                  M_WAITOK | M_ZERO);
2619
2620                         cam_periph_lock(periph);
2621                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2622                                   ("trying to do CDIOCSETSTEREO\n"));
2623
2624                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2625                         if (error) {
2626                                 free(params.mode_buf, M_SCSICD);
2627                                 cam_periph_unlock(periph);
2628                                 break;
2629                         }
2630                         page = cdgetpage(&params);
2631
2632                         page->audio.port[LEFT_PORT].channels =
2633                                 LEFT_CHANNEL;
2634                         page->audio.port[RIGHT_PORT].channels =
2635                                 RIGHT_CHANNEL;
2636                         page->audio.port[2].channels = 0;
2637                         page->audio.port[3].channels = 0;
2638                         error = cdsetmode(periph, &params);
2639                         free(params.mode_buf, M_SCSICD);
2640                         cam_periph_unlock(periph);
2641                 }
2642                 break;
2643         case CDIOCSETMUTE:
2644                 {
2645                         struct cd_mode_params params;
2646                         union cd_pages *page;
2647
2648                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2649                         params.mode_buf = malloc(params.alloc_len, M_SCSICD,
2650                                                  M_WAITOK | M_ZERO);
2651
2652                         cam_periph_lock(periph);
2653                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2654                                   ("trying to do CDIOCSETMUTE\n"));
2655
2656                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2657                         if (error) {
2658                                 free(params.mode_buf, M_SCSICD);
2659                                 cam_periph_unlock(periph);
2660                                 break;
2661                         }
2662                         page = cdgetpage(&params);
2663
2664                         page->audio.port[LEFT_PORT].channels = 0;
2665                         page->audio.port[RIGHT_PORT].channels = 0;
2666                         page->audio.port[2].channels = 0;
2667                         page->audio.port[3].channels = 0;
2668                         error = cdsetmode(periph, &params);
2669                         free(params.mode_buf, M_SCSICD);
2670                         cam_periph_unlock(periph);
2671                 }
2672                 break;
2673         case CDIOCSETLEFT:
2674                 {
2675                         struct cd_mode_params params;
2676                         union cd_pages *page;
2677
2678                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2679                         params.mode_buf = malloc(params.alloc_len, M_SCSICD,
2680                                                  M_WAITOK | M_ZERO);
2681
2682                         cam_periph_lock(periph);
2683                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2684                                   ("trying to do CDIOCSETLEFT\n"));
2685
2686                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2687                         if (error) {
2688                                 free(params.mode_buf, M_SCSICD);
2689                                 cam_periph_unlock(periph);
2690                                 break;
2691                         }
2692                         page = cdgetpage(&params);
2693
2694                         page->audio.port[LEFT_PORT].channels = LEFT_CHANNEL;
2695                         page->audio.port[RIGHT_PORT].channels = LEFT_CHANNEL;
2696                         page->audio.port[2].channels = 0;
2697                         page->audio.port[3].channels = 0;
2698                         error = cdsetmode(periph, &params);
2699                         free(params.mode_buf, M_SCSICD);
2700                         cam_periph_unlock(periph);
2701                 }
2702                 break;
2703         case CDIOCSETRIGHT:
2704                 {
2705                         struct cd_mode_params params;
2706                         union cd_pages *page;
2707
2708                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2709                         params.mode_buf = malloc(params.alloc_len, M_SCSICD,
2710                                                  M_WAITOK | M_ZERO);
2711
2712                         cam_periph_lock(periph);
2713                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2714                                   ("trying to do CDIOCSETRIGHT\n"));
2715
2716                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2717                         if (error) {
2718                                 free(params.mode_buf, M_SCSICD);
2719                                 cam_periph_unlock(periph);
2720                                 break;
2721                         }
2722                         page = cdgetpage(&params);
2723
2724                         page->audio.port[LEFT_PORT].channels = RIGHT_CHANNEL;
2725                         page->audio.port[RIGHT_PORT].channels = RIGHT_CHANNEL;
2726                         page->audio.port[2].channels = 0;
2727                         page->audio.port[3].channels = 0;
2728                         error = cdsetmode(periph, &params);
2729                         free(params.mode_buf, M_SCSICD);
2730                         cam_periph_unlock(periph);
2731                 }
2732                 break;
2733         case CDIOCRESUME:
2734                 cam_periph_lock(periph);
2735                 error = cdpause(periph, 1);
2736                 cam_periph_unlock(periph);
2737                 break;
2738         case CDIOCPAUSE:
2739                 cam_periph_lock(periph);
2740                 error = cdpause(periph, 0);
2741                 cam_periph_unlock(periph);
2742                 break;
2743         case CDIOCSTART:
2744                 cam_periph_lock(periph);
2745                 error = cdstartunit(periph, 0);
2746                 cam_periph_unlock(periph);
2747                 break;
2748         case CDIOCCLOSE:
2749                 cam_periph_lock(periph);
2750                 error = cdstartunit(periph, 1);
2751                 cam_periph_unlock(periph);
2752                 break;
2753         case CDIOCSTOP:
2754                 cam_periph_lock(periph);
2755                 error = cdstopunit(periph, 0);
2756                 cam_periph_unlock(periph);
2757                 break;
2758         case CDIOCEJECT:
2759                 cam_periph_lock(periph);
2760                 error = cdstopunit(periph, 1);
2761                 cam_periph_unlock(periph);
2762                 break;
2763         case CDIOCALLOW:
2764                 cam_periph_lock(periph);
2765                 cdprevent(periph, PR_ALLOW);
2766                 cam_periph_unlock(periph);
2767                 break;
2768         case CDIOCPREVENT:
2769                 cam_periph_lock(periph);
2770                 cdprevent(periph, PR_PREVENT);
2771                 cam_periph_unlock(periph);
2772                 break;
2773         case CDIOCSETDEBUG:
2774                 /* sc_link->flags |= (SDEV_DB1 | SDEV_DB2); */
2775                 error = ENOTTY;
2776                 break;
2777         case CDIOCCLRDEBUG:
2778                 /* sc_link->flags &= ~(SDEV_DB1 | SDEV_DB2); */
2779                 error = ENOTTY;
2780                 break;
2781         case CDIOCRESET:
2782                 /* return (cd_reset(periph)); */
2783                 error = ENOTTY;
2784                 break;
2785         case CDRIOCREADSPEED:
2786                 cam_periph_lock(periph);
2787                 error = cdsetspeed(periph, *(u_int32_t *)addr, CDR_MAX_SPEED);
2788                 cam_periph_unlock(periph);
2789                 break;
2790         case CDRIOCWRITESPEED:
2791                 cam_periph_lock(periph);
2792                 error = cdsetspeed(periph, CDR_MAX_SPEED, *(u_int32_t *)addr);
2793                 cam_periph_unlock(periph);
2794                 break;
2795         case CDRIOCGETBLOCKSIZE:
2796                 *(int *)addr = softc->params.blksize;
2797                 break;
2798         case CDRIOCSETBLOCKSIZE:
2799                 if (*(int *)addr <= 0) {
2800                         error = EINVAL;
2801                         break;
2802                 }
2803                 softc->disk->d_sectorsize = softc->params.blksize = *(int *)addr;
2804                 break;
2805         case DVDIOCSENDKEY:
2806         case DVDIOCREPORTKEY: {
2807                 struct dvd_authinfo *authinfo;
2808
2809                 authinfo = (struct dvd_authinfo *)addr;
2810
2811                 if (cmd == DVDIOCREPORTKEY)
2812                         error = cdreportkey(periph, authinfo);
2813                 else
2814                         error = cdsendkey(periph, authinfo);
2815                 break;
2816                 }
2817         case DVDIOCREADSTRUCTURE: {
2818                 struct dvd_struct *dvdstruct;
2819
2820                 dvdstruct = (struct dvd_struct *)addr;
2821
2822                 error = cdreaddvdstructure(periph, dvdstruct);
2823
2824                 break;
2825         }
2826         default:
2827                 cam_periph_lock(periph);
2828                 error = cam_periph_ioctl(periph, cmd, addr, cderror);
2829                 cam_periph_unlock(periph);
2830                 break;
2831         }
2832
2833         cam_periph_lock(periph);
2834         cam_periph_unhold(periph);
2835
2836         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("leaving cdioctl\n"));
2837         if (error && bootverbose) {
2838                 printf("scsi_cd.c::ioctl cmd=%08lx error=%d\n", cmd, error);
2839         }
2840         cam_periph_unlock(periph);
2841
2842         return (error);
2843 }
2844
2845 static void
2846 cdprevent(struct cam_periph *periph, int action)
2847 {
2848         union   ccb *ccb;
2849         struct  cd_softc *softc;
2850         int     error;
2851
2852         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("entering cdprevent\n"));
2853
2854         softc = (struct cd_softc *)periph->softc;
2855
2856         if (((action == PR_ALLOW)
2857           && (softc->flags & CD_FLAG_DISC_LOCKED) == 0)
2858          || ((action == PR_PREVENT)
2859           && (softc->flags & CD_FLAG_DISC_LOCKED) != 0)) {
2860                 return;
2861         }
2862
2863         ccb = cdgetccb(periph, CAM_PRIORITY_NORMAL);
2864
2865         scsi_prevent(&ccb->csio,
2866                      /*retries*/ cd_retry_count,
2867                      cddone,
2868                      MSG_SIMPLE_Q_TAG,
2869                      action,
2870                      SSD_FULL_SIZE,
2871                      /* timeout */60000);
2872
2873         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
2874                         /*sense_flags*/SF_RETRY_UA|SF_NO_PRINT);
2875
2876         xpt_release_ccb(ccb);
2877
2878         if (error == 0) {
2879                 if (action == PR_ALLOW)
2880                         softc->flags &= ~CD_FLAG_DISC_LOCKED;
2881                 else
2882                         softc->flags |= CD_FLAG_DISC_LOCKED;
2883         }
2884 }
2885
2886 /*
2887  * XXX: the disk media and sector size is only really able to change
2888  * XXX: while the device is closed.
2889  */
2890 static int
2891 cdcheckmedia(struct cam_periph *periph)
2892 {
2893         struct cd_softc *softc;
2894         struct ioc_toc_header *toch;
2895         struct cd_toc_single leadout;
2896         u_int32_t size, toclen;
2897         int error, num_entries, cdindex;
2898
2899         softc = (struct cd_softc *)periph->softc;
2900
2901         cdprevent(periph, PR_PREVENT);
2902         softc->disk->d_sectorsize = 2048;
2903         softc->disk->d_mediasize = 0;
2904
2905         /*
2906          * Get the disc size and block size.  If we can't get it, we don't
2907          * have media, most likely.
2908          */
2909         if ((error = cdsize(periph, &size)) != 0) {
2910                 softc->flags &= ~(CD_FLAG_VALID_MEDIA|CD_FLAG_VALID_TOC);
2911                 cdprevent(periph, PR_ALLOW);
2912                 return (error);
2913         } else {
2914                 softc->flags |= CD_FLAG_SAW_MEDIA | CD_FLAG_VALID_MEDIA;
2915                 softc->disk->d_sectorsize = softc->params.blksize;
2916                 softc->disk->d_mediasize =
2917                     (off_t)softc->params.blksize * softc->params.disksize;
2918         }
2919
2920         /*
2921          * Now we check the table of contents.  This (currently) is only
2922          * used for the CDIOCPLAYTRACKS ioctl.  It may be used later to do
2923          * things like present a separate entry in /dev for each track,
2924          * like that acd(4) driver does.
2925          */
2926         bzero(&softc->toc, sizeof(softc->toc));
2927         toch = &softc->toc.header;
2928         /*
2929          * We will get errors here for media that doesn't have a table of
2930          * contents.  According to the MMC-3 spec: "When a Read TOC/PMA/ATIP
2931          * command is presented for a DDCD/CD-R/RW media, where the first TOC
2932          * has not been recorded (no complete session) and the Format codes
2933          * 0000b, 0001b, or 0010b are specified, this command shall be rejected
2934          * with an INVALID FIELD IN CDB.  Devices that are not capable of
2935          * reading an incomplete session on DDC/CD-R/RW media shall report
2936          * CANNOT READ MEDIUM - INCOMPATIBLE FORMAT."
2937          *
2938          * So this isn't fatal if we can't read the table of contents, it
2939          * just means that the user won't be able to issue the play tracks
2940          * ioctl, and likely lots of other stuff won't work either.  They
2941          * need to burn the CD before we can do a whole lot with it.  So
2942          * we don't print anything here if we get an error back.
2943          */
2944         error = cdreadtoc(periph, 0, 0, (u_int8_t *)toch, sizeof(*toch),
2945                           SF_NO_PRINT);
2946         /*
2947          * Errors in reading the table of contents aren't fatal, we just
2948          * won't have a valid table of contents cached.
2949          */
2950         if (error != 0) {
2951                 error = 0;
2952                 bzero(&softc->toc, sizeof(softc->toc));
2953                 goto bailout;
2954         }
2955
2956         if (softc->quirks & CD_Q_BCD_TRACKS) {
2957                 toch->starting_track = bcd2bin(toch->starting_track);
2958                 toch->ending_track = bcd2bin(toch->ending_track);
2959         }
2960
2961         /* Number of TOC entries, plus leadout */
2962         num_entries = (toch->ending_track - toch->starting_track) + 2;
2963
2964         if (num_entries <= 0)
2965                 goto bailout;
2966
2967         toclen = num_entries * sizeof(struct cd_toc_entry);
2968
2969         error = cdreadtoc(periph, CD_MSF_FORMAT, toch->starting_track,
2970                           (u_int8_t *)&softc->toc, toclen + sizeof(*toch),
2971                           SF_NO_PRINT);
2972         if (error != 0) {
2973                 error = 0;
2974                 bzero(&softc->toc, sizeof(softc->toc));
2975                 goto bailout;
2976         }
2977
2978         if (softc->quirks & CD_Q_BCD_TRACKS) {
2979                 toch->starting_track = bcd2bin(toch->starting_track);
2980                 toch->ending_track = bcd2bin(toch->ending_track);
2981         }
2982         /*
2983          * XXX KDM is this necessary?  Probably only if the drive doesn't
2984          * return leadout information with the table of contents.
2985          */
2986         cdindex = toch->starting_track + num_entries -1;
2987         if (cdindex == toch->ending_track + 1) {
2988
2989                 error = cdreadtoc(periph, CD_MSF_FORMAT, LEADOUT,
2990                                   (u_int8_t *)&leadout, sizeof(leadout),
2991                                   SF_NO_PRINT);
2992                 if (error != 0) {
2993                         error = 0;
2994                         goto bailout;
2995                 }
2996                 softc->toc.entries[cdindex - toch->starting_track] =
2997                         leadout.entry;
2998         }
2999         if (softc->quirks & CD_Q_BCD_TRACKS) {
3000                 for (cdindex = 0; cdindex < num_entries - 1; cdindex++) {
3001                         softc->toc.entries[cdindex].track =
3002                                 bcd2bin(softc->toc.entries[cdindex].track);
3003                 }
3004         }
3005
3006         softc->flags |= CD_FLAG_VALID_TOC;
3007
3008         /* If the first track is audio, correct sector size. */
3009         if ((softc->toc.entries[0].control & 4) == 0) {
3010                 softc->disk->d_sectorsize = softc->params.blksize = 2352;
3011                 softc->disk->d_mediasize =
3012                     (off_t)softc->params.blksize * softc->params.disksize;
3013         }
3014
3015 bailout:
3016
3017         /*
3018          * We unconditionally (re)set the blocksize each time the
3019          * CD device is opened.  This is because the CD can change,
3020          * and therefore the blocksize might change.
3021          * XXX problems here if some slice or partition is still
3022          * open with the old size?
3023          */
3024         if ((softc->disk->d_devstat->flags & DEVSTAT_BS_UNAVAILABLE) != 0)
3025                 softc->disk->d_devstat->flags &= ~DEVSTAT_BS_UNAVAILABLE;
3026         softc->disk->d_devstat->block_size = softc->params.blksize;
3027
3028         return (error);
3029 }
3030
3031 static int
3032 cdsize(struct cam_periph *periph, u_int32_t *size)
3033 {
3034         struct cd_softc *softc;
3035         union ccb *ccb;
3036         struct scsi_read_capacity_data *rcap_buf;
3037         int error;
3038
3039         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("entering cdsize\n"));
3040
3041         softc = (struct cd_softc *)periph->softc;
3042
3043         ccb = cdgetccb(periph, CAM_PRIORITY_NORMAL);
3044
3045         /* XXX Should be M_WAITOK */
3046         rcap_buf = malloc(sizeof(struct scsi_read_capacity_data),
3047                           M_SCSICD, M_NOWAIT | M_ZERO);
3048         if (rcap_buf == NULL)
3049                 return (ENOMEM);
3050
3051         scsi_read_capacity(&ccb->csio,
3052                            /*retries*/ cd_retry_count,
3053                            cddone,
3054                            MSG_SIMPLE_Q_TAG,
3055                            rcap_buf,
3056                            SSD_FULL_SIZE,
3057                            /* timeout */20000);
3058
3059         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3060                          /*sense_flags*/SF_RETRY_UA|SF_NO_PRINT);
3061
3062         xpt_release_ccb(ccb);
3063
3064         softc->params.disksize = scsi_4btoul(rcap_buf->addr) + 1;
3065         softc->params.blksize  = scsi_4btoul(rcap_buf->length);
3066         /* Make sure we got at least some block size. */
3067         if (error == 0 && softc->params.blksize == 0)
3068                 error = EIO;
3069         /*
3070          * SCSI-3 mandates that the reported blocksize shall be 2048.
3071          * Older drives sometimes report funny values, trim it down to
3072          * 2048, or other parts of the kernel will get confused.
3073          *
3074          * XXX we leave drives alone that might report 512 bytes, as
3075          * well as drives reporting more weird sizes like perhaps 4K.
3076          */
3077         if (softc->params.blksize > 2048 && softc->params.blksize <= 2352)
3078                 softc->params.blksize = 2048;
3079
3080         free(rcap_buf, M_SCSICD);
3081         *size = softc->params.disksize;
3082
3083         return (error);
3084
3085 }
3086
3087 static int
3088 cd6byteworkaround(union ccb *ccb)
3089 {
3090         u_int8_t *cdb;
3091         struct cam_periph *periph;
3092         struct cd_softc *softc;
3093         struct cd_mode_params *params;
3094         int frozen, found;
3095
3096         periph = xpt_path_periph(ccb->ccb_h.path);
3097         softc = (struct cd_softc *)periph->softc;
3098
3099         cdb = ccb->csio.cdb_io.cdb_bytes;
3100
3101         if ((ccb->ccb_h.flags & CAM_CDB_POINTER)
3102          || ((cdb[0] != MODE_SENSE_6)
3103           && (cdb[0] != MODE_SELECT_6)))
3104                 return (0);
3105
3106         /*
3107          * Because there is no convenient place to stash the overall
3108          * cd_mode_params structure pointer, we have to grab it like this.
3109          * This means that ALL MODE_SENSE and MODE_SELECT requests in the
3110          * cd(4) driver MUST go through cdgetmode() and cdsetmode()!
3111          *
3112          * XXX It would be nice if, at some point, we could increase the
3113          * number of available peripheral private pointers.  Both pointers
3114          * are currently used in most every peripheral driver.
3115          */
3116         found = 0;
3117
3118         STAILQ_FOREACH(params, &softc->mode_queue, links) {
3119                 if (params->mode_buf == ccb->csio.data_ptr) {
3120                         found = 1;
3121                         break;
3122                 }
3123         }
3124
3125         /*
3126          * This shouldn't happen.  All mode sense and mode select
3127          * operations in the cd(4) driver MUST go through cdgetmode() and
3128          * cdsetmode()!
3129          */
3130         if (found == 0) {
3131                 xpt_print(periph->path,
3132                     "mode buffer not found in mode queue!\n");
3133                 return (0);
3134         }
3135
3136         params->cdb_size = 10;
3137         softc->minimum_command_size = 10;
3138         xpt_print(ccb->ccb_h.path,
3139             "%s(6) failed, increasing minimum CDB size to 10 bytes\n",
3140             (cdb[0] == MODE_SENSE_6) ? "MODE_SENSE" : "MODE_SELECT");
3141
3142         if (cdb[0] == MODE_SENSE_6) {
3143                 struct scsi_mode_sense_10 ms10;
3144                 struct scsi_mode_sense_6 *ms6;
3145                 int len;
3146
3147                 ms6 = (struct scsi_mode_sense_6 *)cdb;
3148
3149                 bzero(&ms10, sizeof(ms10));
3150                 ms10.opcode = MODE_SENSE_10;
3151                 ms10.byte2 = ms6->byte2;
3152                 ms10.page = ms6->page;
3153
3154                 /*
3155                  * 10 byte mode header, block descriptor,
3156                  * sizeof(union cd_pages)
3157                  */
3158                 len = sizeof(struct cd_mode_data_10);
3159                 ccb->csio.dxfer_len = len;
3160
3161                 scsi_ulto2b(len, ms10.length);
3162                 ms10.control = ms6->control;
3163                 bcopy(&ms10, cdb, 10);
3164                 ccb->csio.cdb_len = 10;
3165         } else {
3166                 struct scsi_mode_select_10 ms10;
3167                 struct scsi_mode_select_6 *ms6;
3168                 struct scsi_mode_header_6 *header6;
3169                 struct scsi_mode_header_10 *header10;
3170                 struct scsi_mode_page_header *page_header;
3171                 int blk_desc_len, page_num, page_size, len;
3172
3173                 ms6 = (struct scsi_mode_select_6 *)cdb;
3174
3175                 bzero(&ms10, sizeof(ms10));
3176                 ms10.opcode = MODE_SELECT_10;
3177                 ms10.byte2 = ms6->byte2;
3178
3179                 header6 = (struct scsi_mode_header_6 *)params->mode_buf;
3180                 header10 = (struct scsi_mode_header_10 *)params->mode_buf;
3181
3182                 page_header = find_mode_page_6(header6);
3183                 page_num = page_header->page_code;
3184
3185                 blk_desc_len = header6->blk_desc_len;
3186
3187                 page_size = cdgetpagesize(page_num);
3188
3189                 if (page_size != (page_header->page_length +
3190                     sizeof(*page_header)))
3191                         page_size = page_header->page_length +
3192                                 sizeof(*page_header);
3193
3194                 len = sizeof(*header10) + blk_desc_len + page_size;
3195
3196                 len = min(params->alloc_len, len);
3197
3198                 /*
3199                  * Since the 6 byte parameter header is shorter than the 10
3200                  * byte parameter header, we need to copy the actual mode
3201                  * page data, and the block descriptor, if any, so things wind
3202                  * up in the right place.  The regions will overlap, but
3203                  * bcopy() does the right thing.
3204                  */
3205                 bcopy(params->mode_buf + sizeof(*header6),
3206                       params->mode_buf + sizeof(*header10),
3207                       len - sizeof(*header10));
3208
3209                 /* Make sure these fields are set correctly. */
3210                 scsi_ulto2b(0, header10->data_length);
3211                 header10->medium_type = 0;
3212                 scsi_ulto2b(blk_desc_len, header10->blk_desc_len);
3213
3214                 ccb->csio.dxfer_len = len;
3215
3216                 scsi_ulto2b(len, ms10.length);
3217                 ms10.control = ms6->control;
3218                 bcopy(&ms10, cdb, 10);
3219                 ccb->csio.cdb_len = 10;
3220         }
3221
3222         frozen = (ccb->ccb_h.status & CAM_DEV_QFRZN) != 0;
3223         ccb->ccb_h.status = CAM_REQUEUE_REQ;
3224         xpt_action(ccb);
3225         if (frozen) {
3226                 cam_release_devq(ccb->ccb_h.path,
3227                                  /*relsim_flags*/0,
3228                                  /*openings*/0,
3229                                  /*timeout*/0,
3230                                  /*getcount_only*/0);
3231         }
3232
3233         return (ERESTART);
3234 }
3235
3236 static int
3237 cderror(union ccb *ccb, u_int32_t cam_flags, u_int32_t sense_flags)
3238 {
3239         struct cd_softc *softc;
3240         struct cam_periph *periph;
3241         int error, error_code, sense_key, asc, ascq;
3242
3243         periph = xpt_path_periph(ccb->ccb_h.path);
3244         softc = (struct cd_softc *)periph->softc;
3245
3246         error = 0;
3247
3248         /*
3249          * We use a status of CAM_REQ_INVALID as shorthand -- if a 6 byte
3250          * CDB comes back with this particular error, try transforming it
3251          * into the 10 byte version.
3252          */
3253         if ((ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_INVALID) {
3254                 error = cd6byteworkaround(ccb);
3255         } else if (scsi_extract_sense_ccb(ccb,
3256             &error_code, &sense_key, &asc, &ascq)) {
3257                 if (sense_key == SSD_KEY_ILLEGAL_REQUEST)
3258                         error = cd6byteworkaround(ccb);
3259                 else if (sense_key == SSD_KEY_UNIT_ATTENTION &&
3260                     asc == 0x28 && ascq == 0x00)
3261                         disk_media_changed(softc->disk, M_NOWAIT);
3262                 else if (sense_key == SSD_KEY_NOT_READY &&
3263                     asc == 0x3a && (softc->flags & CD_FLAG_SAW_MEDIA)) {
3264                         softc->flags &= ~CD_FLAG_SAW_MEDIA;
3265                         disk_media_gone(softc->disk, M_NOWAIT);
3266                 }
3267         }
3268
3269         if (error == ERESTART)
3270                 return (error);
3271
3272         /*
3273          * XXX
3274          * Until we have a better way of doing pack validation,
3275          * don't treat UAs as errors.
3276          */
3277         sense_flags |= SF_RETRY_UA;
3278         return (cam_periph_error(ccb, cam_flags, sense_flags,
3279                                  &softc->saved_ccb));
3280 }
3281
3282 static void
3283 cdmediapoll(void *arg)
3284 {
3285         struct cam_periph *periph = arg;
3286         struct cd_softc *softc = periph->softc;
3287
3288         if (softc->flags & CD_FLAG_CHANGER)
3289                 return;
3290
3291         if (softc->state == CD_STATE_NORMAL && !softc->tur &&
3292             softc->outstanding_cmds == 0) {
3293                 if (cam_periph_acquire(periph) == CAM_REQ_CMP) {
3294                         softc->tur = 1;
3295                         xpt_schedule(periph, CAM_PRIORITY_NORMAL);
3296                 }
3297         }
3298         /* Queue us up again */
3299         if (cd_poll_period != 0)
3300                 callout_schedule(&softc->mediapoll_c, cd_poll_period * hz);
3301 }
3302
3303 /*
3304  * Read table of contents
3305  */
3306 static int
3307 cdreadtoc(struct cam_periph *periph, u_int32_t mode, u_int32_t start,
3308           u_int8_t *data, u_int32_t len, u_int32_t sense_flags)
3309 {
3310         struct scsi_read_toc *scsi_cmd;
3311         u_int32_t ntoc;
3312         struct ccb_scsiio *csio;
3313         union ccb *ccb;
3314         int error;
3315
3316         ntoc = len;
3317         error = 0;
3318
3319         ccb = cdgetccb(periph, CAM_PRIORITY_NORMAL);
3320
3321         csio = &ccb->csio;
3322
3323         cam_fill_csio(csio,
3324                       /* retries */ cd_retry_count,
3325                       /* cbfcnp */ cddone,
3326                       /* flags */ CAM_DIR_IN,
3327                       /* tag_action */ MSG_SIMPLE_Q_TAG,
3328                       /* data_ptr */ data,
3329                       /* dxfer_len */ len,
3330                       /* sense_len */ SSD_FULL_SIZE,
3331                       sizeof(struct scsi_read_toc),
3332                       /* timeout */ 50000);
3333
3334         scsi_cmd = (struct scsi_read_toc *)&csio->cdb_io.cdb_bytes;
3335         bzero (scsi_cmd, sizeof(*scsi_cmd));
3336
3337         if (mode == CD_MSF_FORMAT)
3338                 scsi_cmd->byte2 |= CD_MSF;
3339         scsi_cmd->from_track = start;
3340         /* scsi_ulto2b(ntoc, (u_int8_t *)scsi_cmd->data_len); */
3341         scsi_cmd->data_len[0] = (ntoc) >> 8;
3342         scsi_cmd->data_len[1] = (ntoc) & 0xff;
3343
3344         scsi_cmd->op_code = READ_TOC;
3345
3346         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3347                          /*sense_flags*/SF_RETRY_UA | sense_flags);
3348
3349         xpt_release_ccb(ccb);
3350
3351         return(error);
3352 }
3353
3354 static int
3355 cdreadsubchannel(struct cam_periph *periph, u_int32_t mode,
3356                  u_int32_t format, int track,
3357                  struct cd_sub_channel_info *data, u_int32_t len)
3358 {
3359         struct scsi_read_subchannel *scsi_cmd;
3360         struct ccb_scsiio *csio;
3361         union ccb *ccb;
3362         int error;
3363
3364         error = 0;
3365
3366         ccb = cdgetccb(periph, CAM_PRIORITY_NORMAL);
3367
3368         csio = &ccb->csio;
3369
3370         cam_fill_csio(csio,
3371                       /* retries */ cd_retry_count,
3372                       /* cbfcnp */ cddone,
3373                       /* flags */ CAM_DIR_IN,
3374                       /* tag_action */ MSG_SIMPLE_Q_TAG,
3375                       /* data_ptr */ (u_int8_t *)data,
3376                       /* dxfer_len */ len,
3377                       /* sense_len */ SSD_FULL_SIZE,
3378                       sizeof(struct scsi_read_subchannel),
3379                       /* timeout */ 50000);
3380
3381         scsi_cmd = (struct scsi_read_subchannel *)&csio->cdb_io.cdb_bytes;
3382         bzero (scsi_cmd, sizeof(*scsi_cmd));
3383
3384         scsi_cmd->op_code = READ_SUBCHANNEL;
3385         if (mode == CD_MSF_FORMAT)
3386                 scsi_cmd->byte1 |= CD_MSF;
3387         scsi_cmd->byte2 = SRS_SUBQ;
3388         scsi_cmd->subchan_format = format;
3389         scsi_cmd->track = track;
3390         scsi_ulto2b(len, (u_int8_t *)scsi_cmd->data_len);
3391         scsi_cmd->control = 0;
3392
3393         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3394                          /*sense_flags*/SF_RETRY_UA);
3395
3396         xpt_release_ccb(ccb);
3397
3398         return(error);
3399 }
3400
3401
3402 /*
3403  * All MODE_SENSE requests in the cd(4) driver MUST go through this
3404  * routine.  See comments in cd6byteworkaround() for details.
3405  */
3406 static int
3407 cdgetmode(struct cam_periph *periph, struct cd_mode_params *data,
3408           u_int32_t page)
3409 {
3410         struct ccb_scsiio *csio;
3411         struct cd_softc *softc;
3412         union ccb *ccb;
3413         int param_len;
3414         int error;
3415
3416         softc = (struct cd_softc *)periph->softc;
3417
3418         ccb = cdgetccb(periph, CAM_PRIORITY_NORMAL);
3419
3420         csio = &ccb->csio;
3421
3422         data->cdb_size = softc->minimum_command_size;
3423         if (data->cdb_size < 10)
3424                 param_len = sizeof(struct cd_mode_data);
3425         else
3426                 param_len = sizeof(struct cd_mode_data_10);
3427
3428         /* Don't say we've got more room than we actually allocated */
3429         param_len = min(param_len, data->alloc_len);
3430
3431         scsi_mode_sense_len(csio,
3432                             /* retries */ cd_retry_count,
3433                             /* cbfcnp */ cddone,
3434                             /* tag_action */ MSG_SIMPLE_Q_TAG,
3435                             /* dbd */ 0,
3436                             /* page_code */ SMS_PAGE_CTRL_CURRENT,
3437                             /* page */ page,
3438                             /* param_buf */ data->mode_buf,
3439                             /* param_len */ param_len,
3440                             /* minimum_cmd_size */ softc->minimum_command_size,
3441                             /* sense_len */ SSD_FULL_SIZE,
3442                             /* timeout */ 50000);
3443
3444         /*
3445          * It would be nice not to have to do this, but there's no
3446          * available pointer in the CCB that would allow us to stuff the
3447          * mode params structure in there and retrieve it in
3448          * cd6byteworkaround(), so we can set the cdb size.  The cdb size
3449          * lets the caller know what CDB size we ended up using, so they
3450          * can find the actual mode page offset.
3451          */
3452         STAILQ_INSERT_TAIL(&softc->mode_queue, data, links);
3453
3454         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3455                          /*sense_flags*/SF_RETRY_UA);
3456
3457         xpt_release_ccb(ccb);
3458
3459         STAILQ_REMOVE(&softc->mode_queue, data, cd_mode_params, links);
3460
3461         /*
3462          * This is a bit of belt-and-suspenders checking, but if we run
3463          * into a situation where the target sends back multiple block
3464          * descriptors, we might not have enough space in the buffer to
3465          * see the whole mode page.  Better to return an error than
3466          * potentially access memory beyond our malloced region.
3467          */
3468         if (error == 0) {
3469                 u_int32_t data_len;
3470
3471                 if (data->cdb_size == 10) {
3472                         struct scsi_mode_header_10 *hdr10;
3473
3474                         hdr10 = (struct scsi_mode_header_10 *)data->mode_buf;
3475                         data_len = scsi_2btoul(hdr10->data_length);
3476                         data_len += sizeof(hdr10->data_length);
3477                 } else {
3478                         struct scsi_mode_header_6 *hdr6;
3479
3480                         hdr6 = (struct scsi_mode_header_6 *)data->mode_buf;
3481                         data_len = hdr6->data_length;
3482                         data_len += sizeof(hdr6->data_length);
3483                 }
3484
3485                 /*
3486                  * Complain if there is more mode data available than we
3487                  * allocated space for.  This could potentially happen if
3488                  * we miscalculated the page length for some reason, if the
3489                  * drive returns multiple block descriptors, or if it sets
3490                  * the data length incorrectly.
3491                  */
3492                 if (data_len > data->alloc_len) {
3493                         xpt_print(periph->path, "allocated modepage %d length "
3494                             "%d < returned length %d\n", page, data->alloc_len,
3495                             data_len);
3496                         error = ENOSPC;
3497                 }
3498         }
3499         return (error);
3500 }
3501
3502 /*
3503  * All MODE_SELECT requests in the cd(4) driver MUST go through this
3504  * routine.  See comments in cd6byteworkaround() for details.
3505  */
3506 static int
3507 cdsetmode(struct cam_periph *periph, struct cd_mode_params *data)
3508 {
3509         struct ccb_scsiio *csio;
3510         struct cd_softc *softc;
3511         union ccb *ccb;
3512         int cdb_size, param_len;
3513         int error;
3514
3515         softc = (struct cd_softc *)periph->softc;
3516
3517         ccb = cdgetccb(periph, CAM_PRIORITY_NORMAL);
3518
3519         csio = &ccb->csio;
3520
3521         error = 0;
3522
3523         /*
3524          * If the data is formatted for the 10 byte version of the mode
3525          * select parameter list, we need to use the 10 byte CDB.
3526          * Otherwise, we use whatever the stored minimum command size.
3527          */
3528         if (data->cdb_size == 10)
3529                 cdb_size = data->cdb_size;
3530         else
3531                 cdb_size = softc->minimum_command_size;
3532
3533         if (cdb_size >= 10) {
3534                 struct scsi_mode_header_10 *mode_header;
3535                 u_int32_t data_len;
3536
3537                 mode_header = (struct scsi_mode_header_10 *)data->mode_buf;
3538
3539                 data_len = scsi_2btoul(mode_header->data_length);
3540
3541                 scsi_ulto2b(0, mode_header->data_length);
3542                 /*
3543                  * SONY drives do not allow a mode select with a medium_type
3544                  * value that has just been returned by a mode sense; use a
3545                  * medium_type of 0 (Default) instead.
3546                  */
3547                 mode_header->medium_type = 0;
3548
3549                 /*
3550                  * Pass back whatever the drive passed to us, plus the size
3551                  * of the data length field.
3552                  */
3553                 param_len = data_len + sizeof(mode_header->data_length);
3554
3555         } else {
3556                 struct scsi_mode_header_6 *mode_header;
3557
3558                 mode_header = (struct scsi_mode_header_6 *)data->mode_buf;
3559
3560                 param_len = mode_header->data_length + 1;
3561
3562                 mode_header->data_length = 0;
3563                 /*
3564                  * SONY drives do not allow a mode select with a medium_type
3565                  * value that has just been returned by a mode sense; use a
3566                  * medium_type of 0 (Default) instead.
3567                  */
3568                 mode_header->medium_type = 0;
3569         }
3570
3571         /* Don't say we've got more room than we actually allocated */
3572         param_len = min(param_len, data->alloc_len);
3573
3574         scsi_mode_select_len(csio,
3575                              /* retries */ cd_retry_count,
3576                              /* cbfcnp */ cddone,
3577                              /* tag_action */ MSG_SIMPLE_Q_TAG,
3578                              /* scsi_page_fmt */ 1,
3579                              /* save_pages */ 0,
3580                              /* param_buf */ data->mode_buf,
3581                              /* param_len */ param_len,
3582                              /* minimum_cmd_size */ cdb_size,
3583                              /* sense_len */ SSD_FULL_SIZE,
3584                              /* timeout */ 50000);
3585
3586         /* See comments in cdgetmode() and cd6byteworkaround(). */
3587         STAILQ_INSERT_TAIL(&softc->mode_queue, data, links);
3588
3589         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3590                          /*sense_flags*/SF_RETRY_UA);
3591
3592         xpt_release_ccb(ccb);
3593
3594         STAILQ_REMOVE(&softc->mode_queue, data, cd_mode_params, links);
3595
3596         return (error);
3597 }
3598
3599
3600 static int
3601 cdplay(struct cam_periph *periph, u_int32_t blk, u_int32_t len)
3602 {
3603         struct ccb_scsiio *csio;
3604         union ccb *ccb;
3605         int error;
3606         u_int8_t cdb_len;
3607
3608         error = 0;
3609         ccb = cdgetccb(periph, CAM_PRIORITY_NORMAL);
3610         csio = &ccb->csio;
3611         /*
3612          * Use the smallest possible command to perform the operation.
3613          */
3614         if ((len & 0xffff0000) == 0) {
3615                 /*
3616                  * We can fit in a 10 byte cdb.
3617                  */
3618                 struct scsi_play_10 *scsi_cmd;
3619
3620                 scsi_cmd = (struct scsi_play_10 *)&csio->cdb_io.cdb_bytes;
3621                 bzero (scsi_cmd, sizeof(*scsi_cmd));
3622                 scsi_cmd->op_code = PLAY_10;
3623                 scsi_ulto4b(blk, (u_int8_t *)scsi_cmd->blk_addr);
3624                 scsi_ulto2b(len, (u_int8_t *)scsi_cmd->xfer_len);
3625                 cdb_len = sizeof(*scsi_cmd);
3626         } else  {
3627                 struct scsi_play_12 *scsi_cmd;
3628
3629                 scsi_cmd = (struct scsi_play_12 *)&csio->cdb_io.cdb_bytes;
3630                 bzero (scsi_cmd, sizeof(*scsi_cmd));
3631                 scsi_cmd->op_code = PLAY_12;
3632                 scsi_ulto4b(blk, (u_int8_t *)scsi_cmd->blk_addr);
3633                 scsi_ulto4b(len, (u_int8_t *)scsi_cmd->xfer_len);
3634                 cdb_len = sizeof(*scsi_cmd);
3635         }
3636         cam_fill_csio(csio,
3637                       /*retries*/ cd_retry_count,
3638                       cddone,
3639                       /*flags*/CAM_DIR_NONE,
3640                       MSG_SIMPLE_Q_TAG,
3641                       /*dataptr*/NULL,
3642                       /*datalen*/0,
3643                       /*sense_len*/SSD_FULL_SIZE,
3644                       cdb_len,
3645                       /*timeout*/50 * 1000);
3646
3647         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3648                          /*sense_flags*/SF_RETRY_UA);
3649
3650         xpt_release_ccb(ccb);
3651
3652         return(error);
3653 }
3654
3655 static int
3656 cdplaymsf(struct cam_periph *periph, u_int32_t startm, u_int32_t starts,
3657           u_int32_t startf, u_int32_t endm, u_int32_t ends, u_int32_t endf)
3658 {
3659         struct scsi_play_msf *scsi_cmd;
3660         struct ccb_scsiio *csio;
3661         union ccb *ccb;
3662         int error;
3663
3664         error = 0;
3665
3666         ccb = cdgetccb(periph, CAM_PRIORITY_NORMAL);
3667
3668         csio = &ccb->csio;
3669
3670         cam_fill_csio(csio,
3671                       /* retries */ cd_retry_count,
3672                       /* cbfcnp */ cddone,
3673                       /* flags */ CAM_DIR_NONE,
3674                       /* tag_action */ MSG_SIMPLE_Q_TAG,
3675                       /* data_ptr */ NULL,
3676                       /* dxfer_len */ 0,
3677                       /* sense_len */ SSD_FULL_SIZE,
3678                       sizeof(struct scsi_play_msf),
3679                       /* timeout */ 50000);
3680
3681         scsi_cmd = (struct scsi_play_msf *)&csio->cdb_io.cdb_bytes;
3682         bzero (scsi_cmd, sizeof(*scsi_cmd));
3683
3684         scsi_cmd->op_code = PLAY_MSF;
3685         scsi_cmd->start_m = startm;
3686         scsi_cmd->start_s = starts;
3687         scsi_cmd->start_f = startf;
3688         scsi_cmd->end_m = endm;
3689         scsi_cmd->end_s = ends;
3690         scsi_cmd->end_f = endf;
3691
3692         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3693                          /*sense_flags*/SF_RETRY_UA);
3694
3695         xpt_release_ccb(ccb);
3696
3697         return(error);
3698 }
3699
3700
3701 static int
3702 cdplaytracks(struct cam_periph *periph, u_int32_t strack, u_int32_t sindex,
3703              u_int32_t etrack, u_int32_t eindex)
3704 {
3705         struct scsi_play_track *scsi_cmd;
3706         struct ccb_scsiio *csio;
3707         union ccb *ccb;
3708         int error;
3709
3710         error = 0;
3711
3712         ccb = cdgetccb(periph, CAM_PRIORITY_NORMAL);
3713
3714         csio = &ccb->csio;
3715
3716         cam_fill_csio(csio,
3717                       /* retries */ cd_retry_count,
3718                       /* cbfcnp */ cddone,
3719                       /* flags */ CAM_DIR_NONE,
3720                       /* tag_action */ MSG_SIMPLE_Q_TAG,
3721                       /* data_ptr */ NULL,
3722                       /* dxfer_len */ 0,
3723                       /* sense_len */ SSD_FULL_SIZE,
3724                       sizeof(struct scsi_play_track),
3725                       /* timeout */ 50000);
3726
3727         scsi_cmd = (struct scsi_play_track *)&csio->cdb_io.cdb_bytes;
3728         bzero (scsi_cmd, sizeof(*scsi_cmd));
3729
3730         scsi_cmd->op_code = PLAY_TRACK;
3731         scsi_cmd->start_track = strack;
3732         scsi_cmd->start_index = sindex;
3733         scsi_cmd->end_track = etrack;
3734         scsi_cmd->end_index = eindex;
3735
3736         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3737                          /*sense_flags*/SF_RETRY_UA);
3738
3739         xpt_release_ccb(ccb);
3740
3741         return(error);
3742 }
3743
3744 static int
3745 cdpause(struct cam_periph *periph, u_int32_t go)
3746 {
3747         struct scsi_pause *scsi_cmd;
3748         struct ccb_scsiio *csio;
3749         union ccb *ccb;
3750         int error;
3751
3752         error = 0;
3753
3754         ccb = cdgetccb(periph, CAM_PRIORITY_NORMAL);
3755
3756         csio = &ccb->csio;
3757
3758         cam_fill_csio(csio,
3759                       /* retries */ cd_retry_count,
3760                       /* cbfcnp */ cddone,
3761                       /* flags */ CAM_DIR_NONE,
3762                       /* tag_action */ MSG_SIMPLE_Q_TAG,
3763                       /* data_ptr */ NULL,
3764                       /* dxfer_len */ 0,
3765                       /* sense_len */ SSD_FULL_SIZE,
3766                       sizeof(struct scsi_pause),
3767                       /* timeout */ 50000);
3768
3769         scsi_cmd = (struct scsi_pause *)&csio->cdb_io.cdb_bytes;
3770         bzero (scsi_cmd, sizeof(*scsi_cmd));
3771
3772         scsi_cmd->op_code = PAUSE;
3773         scsi_cmd->resume = go;
3774
3775         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3776                          /*sense_flags*/SF_RETRY_UA);
3777
3778         xpt_release_ccb(ccb);
3779
3780         return(error);
3781 }
3782
3783 static int
3784 cdstartunit(struct cam_periph *periph, int load)
3785 {
3786         union ccb *ccb;
3787         int error;
3788
3789         error = 0;
3790
3791         ccb = cdgetccb(periph, CAM_PRIORITY_NORMAL);
3792
3793         scsi_start_stop(&ccb->csio,
3794                         /* retries */ cd_retry_count,
3795                         /* cbfcnp */ cddone,
3796                         /* tag_action */ MSG_SIMPLE_Q_TAG,
3797                         /* start */ TRUE,
3798                         /* load_eject */ load,
3799                         /* immediate */ FALSE,
3800                         /* sense_len */ SSD_FULL_SIZE,
3801                         /* timeout */ 50000);
3802
3803         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3804                          /*sense_flags*/SF_RETRY_UA);
3805
3806         xpt_release_ccb(ccb);
3807
3808         return(error);
3809 }
3810
3811 static int
3812 cdstopunit(struct cam_periph *periph, u_int32_t eject)
3813 {
3814         union ccb *ccb;
3815         int error;
3816
3817         error = 0;
3818
3819         ccb = cdgetccb(periph, CAM_PRIORITY_NORMAL);
3820
3821         scsi_start_stop(&ccb->csio,
3822                         /* retries */ cd_retry_count,
3823                         /* cbfcnp */ cddone,
3824                         /* tag_action */ MSG_SIMPLE_Q_TAG,
3825                         /* start */ FALSE,
3826                         /* load_eject */ eject,
3827                         /* immediate */ FALSE,
3828                         /* sense_len */ SSD_FULL_SIZE,
3829                         /* timeout */ 50000);
3830
3831         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3832                          /*sense_flags*/SF_RETRY_UA);
3833
3834         xpt_release_ccb(ccb);
3835
3836         return(error);
3837 }
3838
3839 static int
3840 cdsetspeed(struct cam_periph *periph, u_int32_t rdspeed, u_int32_t wrspeed)
3841 {
3842         struct scsi_set_speed *scsi_cmd;
3843         struct ccb_scsiio *csio;
3844         union ccb *ccb;
3845         int error;
3846
3847         error = 0;
3848         ccb = cdgetccb(periph, CAM_PRIORITY_NORMAL);
3849         csio = &ccb->csio;
3850
3851         /* Preserve old behavior: units in multiples of CDROM speed */
3852         if (rdspeed < 177)
3853                 rdspeed *= 177;
3854         if (wrspeed < 177)
3855                 wrspeed *= 177;
3856
3857         cam_fill_csio(csio,
3858                       /* retries */ cd_retry_count,
3859                       /* cbfcnp */ cddone,
3860                       /* flags */ CAM_DIR_NONE,
3861                       /* tag_action */ MSG_SIMPLE_Q_TAG,
3862                       /* data_ptr */ NULL,
3863                       /* dxfer_len */ 0,
3864                       /* sense_len */ SSD_FULL_SIZE,
3865                       sizeof(struct scsi_set_speed),
3866                       /* timeout */ 50000);
3867
3868         scsi_cmd = (struct scsi_set_speed *)&csio->cdb_io.cdb_bytes;
3869         bzero(scsi_cmd, sizeof(*scsi_cmd));
3870
3871         scsi_cmd->opcode = SET_CD_SPEED;
3872         scsi_ulto2b(rdspeed, scsi_cmd->readspeed);
3873         scsi_ulto2b(wrspeed, scsi_cmd->writespeed);
3874
3875         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3876                          /*sense_flags*/SF_RETRY_UA);
3877
3878         xpt_release_ccb(ccb);
3879
3880         return(error);
3881 }
3882
3883 static int
3884 cdreportkey(struct cam_periph *periph, struct dvd_authinfo *authinfo)
3885 {
3886         union ccb *ccb;
3887         u_int8_t *databuf;
3888         u_int32_t lba;
3889         int error;
3890         int length;
3891
3892         error = 0;
3893         databuf = NULL;
3894         lba = 0;
3895
3896         switch (authinfo->format) {
3897         case DVD_REPORT_AGID:
3898                 length = sizeof(struct scsi_report_key_data_agid);
3899                 break;
3900         case DVD_REPORT_CHALLENGE:
3901                 length = sizeof(struct scsi_report_key_data_challenge);
3902                 break;
3903         case DVD_REPORT_KEY1:
3904                 length = sizeof(struct scsi_report_key_data_key1_key2);
3905                 break;
3906         case DVD_REPORT_TITLE_KEY:
3907                 length = sizeof(struct scsi_report_key_data_title);
3908                 /* The lba field is only set for the title key */
3909                 lba = authinfo->lba;
3910                 break;
3911         case DVD_REPORT_ASF:
3912                 length = sizeof(struct scsi_report_key_data_asf);
3913                 break;
3914         case DVD_REPORT_RPC:
3915                 length = sizeof(struct scsi_report_key_data_rpc);
3916                 break;
3917         case DVD_INVALIDATE_AGID:
3918                 length = 0;
3919                 break;
3920         default:
3921                 return (EINVAL);
3922         }
3923
3924         if (length != 0) {
3925                 databuf = malloc(length, M_DEVBUF, M_WAITOK | M_ZERO);
3926         } else
3927                 databuf = NULL;
3928
3929         cam_periph_lock(periph);
3930         ccb = cdgetccb(periph, CAM_PRIORITY_NORMAL);
3931
3932         scsi_report_key(&ccb->csio,
3933                         /* retries */ cd_retry_count,
3934                         /* cbfcnp */ cddone,
3935                         /* tag_action */ MSG_SIMPLE_Q_TAG,
3936                         /* lba */ lba,
3937                         /* agid */ authinfo->agid,
3938                         /* key_format */ authinfo->format,
3939                         /* data_ptr */ databuf,
3940                         /* dxfer_len */ length,
3941                         /* sense_len */ SSD_FULL_SIZE,
3942                         /* timeout */ 50000);
3943
3944         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3945                          /*sense_flags*/SF_RETRY_UA);
3946
3947         if (error != 0)
3948                 goto bailout;
3949
3950         if (ccb->csio.resid != 0) {
3951                 xpt_print(periph->path, "warning, residual for report key "
3952                     "command is %d\n", ccb->csio.resid);
3953         }
3954
3955         switch(authinfo->format) {
3956         case DVD_REPORT_AGID: {
3957                 struct scsi_report_key_data_agid *agid_data;
3958
3959                 agid_data = (struct scsi_report_key_data_agid *)databuf;
3960
3961                 authinfo->agid = (agid_data->agid & RKD_AGID_MASK) >>
3962                         RKD_AGID_SHIFT;
3963                 break;
3964         }
3965         case DVD_REPORT_CHALLENGE: {
3966                 struct scsi_report_key_data_challenge *chal_data;
3967
3968                 chal_data = (struct scsi_report_key_data_challenge *)databuf;
3969
3970                 bcopy(chal_data->challenge_key, authinfo->keychal,
3971                       min(sizeof(chal_data->challenge_key),
3972                           sizeof(authinfo->keychal)));
3973                 break;
3974         }
3975         case DVD_REPORT_KEY1: {
3976                 struct scsi_report_key_data_key1_key2 *key1_data;
3977
3978                 key1_data = (struct scsi_report_key_data_key1_key2 *)databuf;
3979
3980                 bcopy(key1_data->key1, authinfo->keychal,
3981                       min(sizeof(key1_data->key1), sizeof(authinfo->keychal)));
3982                 break;
3983         }
3984         case DVD_REPORT_TITLE_KEY: {
3985                 struct scsi_report_key_data_title *title_data;
3986
3987                 title_data = (struct scsi_report_key_data_title *)databuf;
3988
3989                 authinfo->cpm = (title_data->byte0 & RKD_TITLE_CPM) >>
3990                         RKD_TITLE_CPM_SHIFT;
3991                 authinfo->cp_sec = (title_data->byte0 & RKD_TITLE_CP_SEC) >>
3992                         RKD_TITLE_CP_SEC_SHIFT;
3993                 authinfo->cgms = (title_data->byte0 & RKD_TITLE_CMGS_MASK) >>
3994                         RKD_TITLE_CMGS_SHIFT;
3995                 bcopy(title_data->title_key, authinfo->keychal,
3996                       min(sizeof(title_data->title_key),
3997                           sizeof(authinfo->keychal)));
3998                 break;
3999         }
4000         case DVD_REPORT_ASF: {
4001                 struct scsi_report_key_data_asf *asf_data;
4002
4003                 asf_data = (struct scsi_report_key_data_asf *)databuf;
4004
4005                 authinfo->asf = asf_data->success & RKD_ASF_SUCCESS;
4006                 break;
4007         }
4008         case DVD_REPORT_RPC: {
4009                 struct scsi_report_key_data_rpc *rpc_data;
4010
4011                 rpc_data = (struct scsi_report_key_data_rpc *)databuf;
4012
4013                 authinfo->reg_type = (rpc_data->byte4 & RKD_RPC_TYPE_MASK) >>
4014                         RKD_RPC_TYPE_SHIFT;
4015                 authinfo->vend_rsts =
4016                         (rpc_data->byte4 & RKD_RPC_VENDOR_RESET_MASK) >>
4017                         RKD_RPC_VENDOR_RESET_SHIFT;
4018                 authinfo->user_rsts = rpc_data->byte4 & RKD_RPC_USER_RESET_MASK;
4019                 authinfo->region = rpc_data->region_mask;
4020                 authinfo->rpc_scheme = rpc_data->rpc_scheme1;
4021                 break;
4022         }
4023         case DVD_INVALIDATE_AGID:
4024                 break;
4025         default:
4026                 /* This should be impossible, since we checked above */
4027                 error = EINVAL;
4028                 goto bailout;
4029                 break; /* NOTREACHED */
4030         }
4031
4032 bailout:
4033         xpt_release_ccb(ccb);
4034         cam_periph_unlock(periph);
4035
4036         if (databuf != NULL)
4037                 free(databuf, M_DEVBUF);
4038
4039         return(error);
4040 }
4041
4042 static int
4043 cdsendkey(struct cam_periph *periph, struct dvd_authinfo *authinfo)
4044 {
4045         union ccb *ccb;
4046         u_int8_t *databuf;
4047         int length;
4048         int error;
4049
4050         error = 0;
4051         databuf = NULL;
4052
4053         switch(authinfo->format) {
4054         case DVD_SEND_CHALLENGE: {
4055                 struct scsi_report_key_data_challenge *challenge_data;
4056
4057                 length = sizeof(*challenge_data);
4058
4059                 challenge_data = malloc(length, M_DEVBUF, M_WAITOK | M_ZERO);
4060
4061                 databuf = (u_int8_t *)challenge_data;
4062
4063                 scsi_ulto2b(length - sizeof(challenge_data->data_len),
4064                             challenge_data->data_len);
4065
4066                 bcopy(authinfo->keychal, challenge_data->challenge_key,
4067                       min(sizeof(authinfo->keychal),
4068                           sizeof(challenge_data->challenge_key)));
4069                 break;
4070         }
4071         case DVD_SEND_KEY2: {
4072                 struct scsi_report_key_data_key1_key2 *key2_data;
4073
4074                 length = sizeof(*key2_data);
4075
4076                 key2_data = malloc(length, M_DEVBUF, M_WAITOK | M_ZERO);
4077
4078                 databuf = (u_int8_t *)key2_data;
4079
4080                 scsi_ulto2b(length - sizeof(key2_data->data_len),
4081                             key2_data->data_len);
4082
4083                 bcopy(authinfo->keychal, key2_data->key1,
4084                       min(sizeof(authinfo->keychal), sizeof(key2_data->key1)));
4085
4086                 break;
4087         }
4088         case DVD_SEND_RPC: {
4089                 struct scsi_send_key_data_rpc *rpc_data;
4090
4091                 length = sizeof(*rpc_data);
4092
4093                 rpc_data = malloc(length, M_DEVBUF, M_WAITOK | M_ZERO);
4094
4095                 databuf = (u_int8_t *)rpc_data;
4096
4097                 scsi_ulto2b(length - sizeof(rpc_data->data_len),
4098                             rpc_data->data_len);
4099
4100                 rpc_data->region_code = authinfo->region;
4101                 break;
4102         }
4103         default:
4104                 return (EINVAL);
4105         }
4106
4107         cam_periph_lock(periph);
4108         ccb = cdgetccb(periph, CAM_PRIORITY_NORMAL);
4109
4110         scsi_send_key(&ccb->csio,
4111                       /* retries */ cd_retry_count,
4112                       /* cbfcnp */ cddone,
4113                       /* tag_action */ MSG_SIMPLE_Q_TAG,
4114                       /* agid */ authinfo->agid,
4115                       /* key_format */ authinfo->format,
4116                       /* data_ptr */ databuf,
4117                       /* dxfer_len */ length,
4118                       /* sense_len */ SSD_FULL_SIZE,
4119                       /* timeout */ 50000);
4120
4121         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
4122                          /*sense_flags*/SF_RETRY_UA);
4123
4124         xpt_release_ccb(ccb);
4125         cam_periph_unlock(periph);
4126
4127         if (databuf != NULL)
4128                 free(databuf, M_DEVBUF);
4129
4130         return(error);
4131 }
4132
4133 static int
4134 cdreaddvdstructure(struct cam_periph *periph, struct dvd_struct *dvdstruct)
4135 {
4136         union ccb *ccb;
4137         u_int8_t *databuf;
4138         u_int32_t address;
4139         int error;
4140         int length;
4141
4142         error = 0;
4143         databuf = NULL;
4144         /* The address is reserved for many of the formats */
4145         address = 0;
4146
4147         switch(dvdstruct->format) {
4148         case DVD_STRUCT_PHYSICAL:
4149                 length = sizeof(struct scsi_read_dvd_struct_data_physical);
4150                 break;
4151         case DVD_STRUCT_COPYRIGHT:
4152                 length = sizeof(struct scsi_read_dvd_struct_data_copyright);
4153                 break;
4154         case DVD_STRUCT_DISCKEY:
4155                 length = sizeof(struct scsi_read_dvd_struct_data_disc_key);
4156                 break;
4157         case DVD_STRUCT_BCA:
4158                 length = sizeof(struct scsi_read_dvd_struct_data_bca);
4159                 break;
4160         case DVD_STRUCT_MANUFACT:
4161                 length = sizeof(struct scsi_read_dvd_struct_data_manufacturer);
4162                 break;
4163         case DVD_STRUCT_CMI:
4164                 return (ENODEV);
4165         case DVD_STRUCT_PROTDISCID:
4166                 length = sizeof(struct scsi_read_dvd_struct_data_prot_discid);
4167                 break;
4168         case DVD_STRUCT_DISCKEYBLOCK:
4169                 length = sizeof(struct scsi_read_dvd_struct_data_disc_key_blk);
4170                 break;
4171         case DVD_STRUCT_DDS:
4172                 length = sizeof(struct scsi_read_dvd_struct_data_dds);
4173                 break;
4174         case DVD_STRUCT_MEDIUM_STAT:
4175                 length = sizeof(struct scsi_read_dvd_struct_data_medium_status);
4176                 break;
4177         case DVD_STRUCT_SPARE_AREA:
4178                 length = sizeof(struct scsi_read_dvd_struct_data_spare_area);
4179                 break;
4180         case DVD_STRUCT_RMD_LAST:
4181                 return (ENODEV);
4182         case DVD_STRUCT_RMD_RMA:
4183                 return (ENODEV);
4184         case DVD_STRUCT_PRERECORDED:
4185                 length = sizeof(struct scsi_read_dvd_struct_data_leadin);
4186                 break;
4187         case DVD_STRUCT_UNIQUEID:
4188                 length = sizeof(struct scsi_read_dvd_struct_data_disc_id);
4189                 break;
4190         case DVD_STRUCT_DCB:
4191                 return (ENODEV);
4192         case DVD_STRUCT_LIST:
4193                 /*
4194                  * This is the maximum allocation length for the READ DVD
4195                  * STRUCTURE command.  There's nothing in the MMC3 spec
4196                  * that indicates a limit in the amount of data that can
4197                  * be returned from this call, other than the limits
4198                  * imposed by the 2-byte length variables.
4199                  */
4200                 length = 65535;
4201                 break;
4202         default:
4203                 return (EINVAL);
4204         }
4205
4206         if (length != 0) {
4207                 databuf = malloc(length, M_DEVBUF, M_WAITOK | M_ZERO);
4208         } else
4209                 databuf = NULL;
4210
4211         cam_periph_lock(periph);
4212         ccb = cdgetccb(periph, CAM_PRIORITY_NORMAL);
4213
4214         scsi_read_dvd_structure(&ccb->csio,
4215                                 /* retries */ cd_retry_count,
4216                                 /* cbfcnp */ cddone,
4217                                 /* tag_action */ MSG_SIMPLE_Q_TAG,
4218                                 /* lba */ address,
4219                                 /* layer_number */ dvdstruct->layer_num,
4220                                 /* key_format */ dvdstruct->format,
4221                                 /* agid */ dvdstruct->agid,
4222                                 /* data_ptr */ databuf,
4223                                 /* dxfer_len */ length,
4224                                 /* sense_len */ SSD_FULL_SIZE,
4225                                 /* timeout */ 50000);
4226
4227         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
4228                          /*sense_flags*/SF_RETRY_UA);
4229
4230         if (error != 0)
4231                 goto bailout;
4232
4233         switch(dvdstruct->format) {
4234         case DVD_STRUCT_PHYSICAL: {
4235                 struct scsi_read_dvd_struct_data_layer_desc *inlayer;
4236                 struct dvd_layer *outlayer;
4237                 struct scsi_read_dvd_struct_data_physical *phys_data;
4238
4239                 phys_data =
4240                         (struct scsi_read_dvd_struct_data_physical *)databuf;
4241                 inlayer = &phys_data->layer_desc;
4242                 outlayer = (struct dvd_layer *)&dvdstruct->data;
4243
4244                 dvdstruct->length = sizeof(*inlayer);
4245
4246                 outlayer->book_type = (inlayer->book_type_version &
4247                         RDSD_BOOK_TYPE_MASK) >> RDSD_BOOK_TYPE_SHIFT;
4248                 outlayer->book_version = (inlayer->book_type_version &
4249                         RDSD_BOOK_VERSION_MASK);
4250                 outlayer->disc_size = (inlayer->disc_size_max_rate &
4251                         RDSD_DISC_SIZE_MASK) >> RDSD_DISC_SIZE_SHIFT;
4252                 outlayer->max_rate = (inlayer->disc_size_max_rate &
4253                         RDSD_MAX_RATE_MASK);
4254                 outlayer->nlayers = (inlayer->layer_info &
4255                         RDSD_NUM_LAYERS_MASK) >> RDSD_NUM_LAYERS_SHIFT;
4256                 outlayer->track_path = (inlayer->layer_info &
4257                         RDSD_TRACK_PATH_MASK) >> RDSD_TRACK_PATH_SHIFT;
4258                 outlayer->layer_type = (inlayer->layer_info &
4259                         RDSD_LAYER_TYPE_MASK);
4260                 outlayer->linear_density = (inlayer->density &
4261                         RDSD_LIN_DENSITY_MASK) >> RDSD_LIN_DENSITY_SHIFT;
4262                 outlayer->track_density = (inlayer->density &
4263                         RDSD_TRACK_DENSITY_MASK);
4264                 outlayer->bca = (inlayer->bca & RDSD_BCA_MASK) >>
4265                         RDSD_BCA_SHIFT;
4266                 outlayer->start_sector = scsi_3btoul(inlayer->main_data_start);
4267                 outlayer->end_sector = scsi_3btoul(inlayer->main_data_end);
4268                 outlayer->end_sector_l0 =
4269                         scsi_3btoul(inlayer->end_sector_layer0);
4270                 break;
4271         }
4272         case DVD_STRUCT_COPYRIGHT: {
4273                 struct scsi_read_dvd_struct_data_copyright *copy_data;
4274
4275                 copy_data = (struct scsi_read_dvd_struct_data_copyright *)
4276                         databuf;
4277
4278                 dvdstruct->cpst = copy_data->cps_type;
4279                 dvdstruct->rmi = copy_data->region_info;
4280                 dvdstruct->length = 0;
4281
4282                 break;
4283         }
4284         default:
4285                 /*
4286                  * Tell the user what the overall length is, no matter
4287                  * what we can actually fit in the data buffer.
4288                  */
4289                 dvdstruct->length = length - ccb->csio.resid -
4290                         sizeof(struct scsi_read_dvd_struct_data_header);
4291
4292                 /*
4293                  * But only actually copy out the smaller of what we read
4294                  * in or what the structure can take.
4295                  */
4296                 bcopy(databuf + sizeof(struct scsi_read_dvd_struct_data_header),
4297                       dvdstruct->data,
4298                       min(sizeof(dvdstruct->data), dvdstruct->length));
4299                 break;
4300         }
4301
4302 bailout:
4303         xpt_release_ccb(ccb);
4304         cam_periph_unlock(periph);
4305
4306         if (databuf != NULL)
4307                 free(databuf, M_DEVBUF);
4308
4309         return(error);
4310 }
4311
4312 void
4313 scsi_report_key(struct ccb_scsiio *csio, u_int32_t retries,
4314                 void (*cbfcnp)(struct cam_periph *, union ccb *),
4315                 u_int8_t tag_action, u_int32_t lba, u_int8_t agid,
4316                 u_int8_t key_format, u_int8_t *data_ptr, u_int32_t dxfer_len,
4317                 u_int8_t sense_len, u_int32_t timeout)
4318 {
4319         struct scsi_report_key *scsi_cmd;
4320
4321         scsi_cmd = (struct scsi_report_key *)&csio->cdb_io.cdb_bytes;
4322         bzero(scsi_cmd, sizeof(*scsi_cmd));
4323         scsi_cmd->opcode = REPORT_KEY;
4324         scsi_ulto4b(lba, scsi_cmd->lba);
4325         scsi_ulto2b(dxfer_len, scsi_cmd->alloc_len);
4326         scsi_cmd->agid_keyformat = (agid << RK_KF_AGID_SHIFT) |
4327                 (key_format & RK_KF_KEYFORMAT_MASK);
4328
4329         cam_fill_csio(csio,
4330                       retries,
4331                       cbfcnp,
4332                       /*flags*/ (dxfer_len == 0) ? CAM_DIR_NONE : CAM_DIR_IN,
4333                       tag_action,
4334                       /*data_ptr*/ data_ptr,
4335                       /*dxfer_len*/ dxfer_len,
4336                       sense_len,
4337                       sizeof(*scsi_cmd),
4338                       timeout);
4339 }
4340
4341 void
4342 scsi_send_key(struct ccb_scsiio *csio, u_int32_t retries,
4343               void (*cbfcnp)(struct cam_periph *, union ccb *),
4344               u_int8_t tag_action, u_int8_t agid, u_int8_t key_format,
4345               u_int8_t *data_ptr, u_int32_t dxfer_len, u_int8_t sense_len,
4346               u_int32_t timeout)
4347 {
4348         struct scsi_send_key *scsi_cmd;
4349
4350         scsi_cmd = (struct scsi_send_key *)&csio->cdb_io.cdb_bytes;
4351         bzero(scsi_cmd, sizeof(*scsi_cmd));
4352         scsi_cmd->opcode = SEND_KEY;
4353
4354         scsi_ulto2b(dxfer_len, scsi_cmd->param_len);
4355         scsi_cmd->agid_keyformat = (agid << RK_KF_AGID_SHIFT) |
4356                 (key_format & RK_KF_KEYFORMAT_MASK);
4357
4358         cam_fill_csio(csio,
4359                       retries,
4360                       cbfcnp,
4361                       /*flags*/ CAM_DIR_OUT,
4362                       tag_action,
4363                       /*data_ptr*/ data_ptr,
4364                       /*dxfer_len*/ dxfer_len,
4365                       sense_len,
4366                       sizeof(*scsi_cmd),
4367                       timeout);
4368 }
4369
4370
4371 void
4372 scsi_read_dvd_structure(struct ccb_scsiio *csio, u_int32_t retries,
4373                         void (*cbfcnp)(struct cam_periph *, union ccb *),
4374                         u_int8_t tag_action, u_int32_t address,
4375                         u_int8_t layer_number, u_int8_t format, u_int8_t agid,
4376                         u_int8_t *data_ptr, u_int32_t dxfer_len,
4377                         u_int8_t sense_len, u_int32_t timeout)
4378 {
4379         struct scsi_read_dvd_structure *scsi_cmd;
4380
4381         scsi_cmd = (struct scsi_read_dvd_structure *)&csio->cdb_io.cdb_bytes;
4382         bzero(scsi_cmd, sizeof(*scsi_cmd));
4383         scsi_cmd->opcode = READ_DVD_STRUCTURE;
4384
4385         scsi_ulto4b(address, scsi_cmd->address);
4386         scsi_cmd->layer_number = layer_number;
4387         scsi_cmd->format = format;
4388         scsi_ulto2b(dxfer_len, scsi_cmd->alloc_len);
4389         /* The AGID is the top two bits of this byte */
4390         scsi_cmd->agid = agid << 6;
4391
4392         cam_fill_csio(csio,
4393                       retries,
4394                       cbfcnp,
4395                       /*flags*/ CAM_DIR_IN,
4396                       tag_action,
4397                       /*data_ptr*/ data_ptr,
4398                       /*dxfer_len*/ dxfer_len,
4399                       sense_len,
4400                       sizeof(*scsi_cmd),
4401                       timeout);
4402 }