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_CHANGER         = 0x0040,
 109         CD_FLAG_ACTIVE          = 0x0080,
 110         CD_FLAG_SCHED_ON_COMP   = 0x0100,
 111         CD_FLAG_RETRY_UA        = 0x0200,
 112         CD_FLAG_VALID_MEDIA     = 0x0400,
 113         CD_FLAG_VALID_TOC       = 0x0800,
 114         CD_FLAG_SCTX_INIT       = 0x1000,
 115         CD_FLAG_OPEN            = 0x2000
 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_TYPE_MASK        = 0x0F,
 123         CD_CCB_RETRY_UA         = 0x10
 124 } cd_ccb_state;
 125
 126 typedef enum {
 127         CHANGER_TIMEOUT_SCHED           = 0x01,
 128         CHANGER_SHORT_TMOUT_SCHED       = 0x02,
 129         CHANGER_MANUAL_CALL             = 0x04,
 130         CHANGER_NEED_TIMEOUT            = 0x08
 131 } cd_changer_flags;
 132
 133 #define ccb_state ppriv_field0
 134 #define ccb_bp ppriv_ptr1
 135
 136 struct cd_tocdata {
 137         struct ioc_toc_header header;
 138         struct cd_toc_entry entries[100];
 139 };
 140
 141 struct cd_toc_single {
 142         struct ioc_toc_header header;
 143         struct cd_toc_entry entry;
 144 };
 145
 146 typedef enum {
 147         CD_STATE_PROBE,
 148         CD_STATE_NORMAL
 149 } cd_state;
 150
 151 struct cd_softc {
 152         cam_pinfo               pinfo;
 153         cd_state                state;
 154         volatile cd_flags       flags;
 155         struct bio_queue_head   bio_queue;
 156         LIST_HEAD(, ccb_hdr)    pending_ccbs;
 157         struct cd_params        params;
 158         union ccb               saved_ccb;
 159         cd_quirks               quirks;
 160         STAILQ_ENTRY(cd_softc)  changer_links;
 161         struct cdchanger        *changer;
 162         int                     bufs_left;
 163         struct cam_periph       *periph;
 164         int                     minimum_command_size;
 165         int                     outstanding_cmds;
 166         struct task             sysctl_task;
 167         struct sysctl_ctx_list  sysctl_ctx;
 168         struct sysctl_oid       *sysctl_tree;
 169         STAILQ_HEAD(, cd_mode_params)   mode_queue;
 170         struct cd_tocdata       toc;
 171         struct disk             *disk;
 172 };
 173
 174 struct cd_page_sizes {
 175         int page;
 176         int page_size;
 177 };
 178
 179 static struct cd_page_sizes cd_page_size_table[] =
 180 {
 181         { AUDIO_PAGE, sizeof(struct cd_audio_page)}
 182 };
 183
 184 struct cd_quirk_entry {
 185         struct scsi_inquiry_pattern inq_pat;
 186         cd_quirks quirks;
 187 };
 188
 189 /*
 190  * The changer quirk entries aren't strictly necessary.  Basically, what
 191  * they do is tell cdregister() up front that a device is a changer.
 192  * Otherwise, it will figure that fact out once it sees a LUN on the device
 193  * that is greater than 0.  If it is known up front that a device is a changer,
 194  * all I/O to the device will go through the changer scheduling routines, as
 195  * opposed to the "normal" CD code.
 196  *
 197  * NOTE ON 10_BYTE_ONLY quirks:  Any 10_BYTE_ONLY quirks MUST be because
 198  * your device hangs when it gets a 10 byte command.  Adding a quirk just
 199  * to get rid of the informative diagnostic message is not acceptable.  All
 200  * 10_BYTE_ONLY quirks must be documented in full in a PR (which should be
 201  * referenced in a comment along with the quirk) , and must be approved by
 202  * ken@FreeBSD.org.  Any quirks added that don't adhere to this policy may
 203  * be removed until the submitter can explain why they are needed.
 204  * 10_BYTE_ONLY quirks will be removed (as they will no longer be necessary)
 205  * when the CAM_NEW_TRAN_CODE work is done.
 206  */
 207 static struct cd_quirk_entry cd_quirk_table[] =
 208 {
 209         {
 210                 { T_CDROM, SIP_MEDIA_REMOVABLE, "NRC", "MBR-7", "*"},
 211                  /*quirks*/ CD_Q_CHANGER
 212         },
 213         {
 214                 { T_CDROM, SIP_MEDIA_REMOVABLE, "PIONEER", "CD-ROM DRM*",
 215                   "*"}, /* quirks */ CD_Q_CHANGER
 216         },
 217         {
 218                 { T_CDROM, SIP_MEDIA_REMOVABLE, "NAKAMICH", "MJ-*", "*"},
 219                  /* quirks */ CD_Q_CHANGER
 220         },
 221         {
 222                 { T_CDROM, SIP_MEDIA_REMOVABLE, "CHINON", "CD-ROM CDS-535","*"},
 223                 /* quirks */ CD_Q_BCD_TRACKS
 224         }
 225 };
 226
 227 static  disk_open_t     cdopen;
 228 static  disk_close_t    cdclose;
 229 static  disk_ioctl_t    cdioctl;
 230 static  disk_strategy_t cdstrategy;
 231
 232 static  periph_init_t   cdinit;
 233 static  periph_ctor_t   cdregister;
 234 static  periph_dtor_t   cdcleanup;
 235 static  periph_start_t  cdstart;
 236 static  periph_oninv_t  cdoninvalidate;
 237 static  void            cdasync(void *callback_arg, u_int32_t code,
 238                                 struct cam_path *path, void *arg);
 239 static  int             cdcmdsizesysctl(SYSCTL_HANDLER_ARGS);
 240 static  void            cdshorttimeout(void *arg);
 241 static  void            cdschedule(struct cam_periph *periph, int priority);
 242 static  void            cdrunchangerqueue(void *arg);
 243 static  void            cdchangerschedule(struct cd_softc *softc);
 244 static  int             cdrunccb(union ccb *ccb,
 245                                  int (*error_routine)(union ccb *ccb,
 246                                                       u_int32_t cam_flags,
 247                                                       u_int32_t sense_flags),
 248                                  u_int32_t cam_flags, u_int32_t sense_flags);
 249 static  union ccb       *cdgetccb(struct cam_periph *periph,
 250                                   u_int32_t priority);
 251 static  void            cddone(struct cam_periph *periph,
 252                                union ccb *start_ccb);
 253 static  union cd_pages  *cdgetpage(struct cd_mode_params *mode_params);
 254 static  int             cdgetpagesize(int page_num);
 255 static  void            cdprevent(struct cam_periph *periph, int action);
 256 static  int             cdcheckmedia(struct cam_periph *periph);
 257 static  int             cdsize(struct cam_periph *periph, u_int32_t *size);
 258 static  int             cd6byteworkaround(union ccb *ccb);
 259 static  int             cderror(union ccb *ccb, u_int32_t cam_flags,
 260                                 u_int32_t sense_flags);
 261 static  int             cdreadtoc(struct cam_periph *periph, u_int32_t mode,
 262                                   u_int32_t start, u_int8_t *data,
 263                                   u_int32_t len, u_int32_t sense_flags);
 264 static  int             cdgetmode(struct cam_periph *periph,
 265                                   struct cd_mode_params *data, u_int32_t page);
 266 static  int             cdsetmode(struct cam_periph *periph,
 267                                   struct cd_mode_params *data);
 268 static  int             cdplay(struct cam_periph *periph, u_int32_t blk,
 269                                u_int32_t len);
 270 static  int             cdreadsubchannel(struct cam_periph *periph,
 271                                          u_int32_t mode, u_int32_t format,
 272                                          int track,
 273                                          struct cd_sub_channel_info *data,
 274                                          u_int32_t len);
 275 static  int             cdplaymsf(struct cam_periph *periph, u_int32_t startm,
 276                                   u_int32_t starts, u_int32_t startf,
 277                                   u_int32_t endm, u_int32_t ends,
 278                                   u_int32_t endf);
 279 static  int             cdplaytracks(struct cam_periph *periph,
 280                                      u_int32_t strack, u_int32_t sindex,
 281                                      u_int32_t etrack, u_int32_t eindex);
 282 static  int             cdpause(struct cam_periph *periph, u_int32_t go);
 283 static  int             cdstopunit(struct cam_periph *periph, u_int32_t eject);
 284 static  int             cdstartunit(struct cam_periph *periph, int load);
 285 static  int             cdsetspeed(struct cam_periph *periph,
 286                                    u_int32_t rdspeed, u_int32_t wrspeed);
 287 static  int             cdreportkey(struct cam_periph *periph,
 288                                     struct dvd_authinfo *authinfo);
 289 static  int             cdsendkey(struct cam_periph *periph,
 290                                   struct dvd_authinfo *authinfo);
 291 static  int             cdreaddvdstructure(struct cam_periph *periph,
 292                                            struct dvd_struct *dvdstruct);
 293
 294 static struct periph_driver cddriver =
 295 {
 296         cdinit, "cd",
 297         TAILQ_HEAD_INITIALIZER(cddriver.units), /* generation */ 0
 298 };
 299
 300 PERIPHDRIVER_DECLARE(cd, cddriver);
 301
 302 #ifndef CD_DEFAULT_RETRY
 303 #define CD_DEFAULT_RETRY        4
 304 #endif
 305 #ifndef CHANGER_MIN_BUSY_SECONDS
 306 #define CHANGER_MIN_BUSY_SECONDS        5
 307 #endif
 308 #ifndef CHANGER_MAX_BUSY_SECONDS
 309 #define CHANGER_MAX_BUSY_SECONDS        15
 310 #endif
 311
 312 static int cd_retry_count = CD_DEFAULT_RETRY;
 313 static int changer_min_busy_seconds = CHANGER_MIN_BUSY_SECONDS;
 314 static int changer_max_busy_seconds = CHANGER_MAX_BUSY_SECONDS;
 315
 316 SYSCTL_NODE(_kern_cam, OID_AUTO, cd, CTLFLAG_RD, 0, "CAM CDROM driver");
 317 SYSCTL_NODE(_kern_cam_cd, OID_AUTO, changer, CTLFLAG_RD, 0, "CD Changer");
 318 SYSCTL_INT(_kern_cam_cd, OID_AUTO, retry_count, CTLFLAG_RW,
 319            &cd_retry_count, 0, "Normal I/O retry count");
 320 TUNABLE_INT("kern.cam.cd.retry_count", &cd_retry_count);
 321 SYSCTL_INT(_kern_cam_cd_changer, OID_AUTO, min_busy_seconds, CTLFLAG_RW,
 322            &changer_min_busy_seconds, 0, "Minimum changer scheduling quantum");
 323 TUNABLE_INT("kern.cam.cd.changer.min_busy_seconds", &changer_min_busy_seconds);
 324 SYSCTL_INT(_kern_cam_cd_changer, OID_AUTO, max_busy_seconds, CTLFLAG_RW,
 325            &changer_max_busy_seconds, 0, "Maximum changer scheduling quantum");
 326 TUNABLE_INT("kern.cam.cd.changer.max_busy_seconds", &changer_max_busy_seconds);
 327
 328 struct cdchanger {
 329         path_id_t                        path_id;
 330         target_id_t                      target_id;
 331         int                              num_devices;
 332         struct camq                      devq;
 333         struct timeval                   start_time;
 334         struct cd_softc                  *cur_device;
 335         struct callout                   short_handle;
 336         struct callout                   long_handle;
 337         volatile cd_changer_flags        flags;
 338         STAILQ_ENTRY(cdchanger)          changer_links;
 339         STAILQ_HEAD(chdevlist, cd_softc) chluns;
 340 };
 341
 342 static struct mtx changerq_mtx;
 343 static STAILQ_HEAD(changerlist, cdchanger) changerq;
 344 static int num_changers;
 345
 346 MALLOC_DEFINE(M_SCSICD, "scsi_cd", "scsi_cd buffers");
 347
 348 static void
 349 cdinit(void)
 350 {
 351         cam_status status;
 352
 353         mtx_init(&changerq_mtx, "cdchangerq", "SCSI CD Changer List", MTX_DEF);
 354         STAILQ_INIT(&changerq);
 355
 356         /*
 357          * Install a global async callback.  This callback will
 358          * receive async callbacks like "new device found".
 359          */
 360         status = xpt_register_async(AC_FOUND_DEVICE, cdasync, NULL, NULL);
 361
 362         if (status != CAM_REQ_CMP) {
 363                 printf("cd: Failed to attach master async callback "
 364                        "due to status 0x%x!\n", status);
 365         }
 366 }
 367
 368 static void
 369 cdoninvalidate(struct cam_periph *periph)
 370 {
 371         struct cd_softc *softc;
 372
 373         softc = (struct cd_softc *)periph->softc;
 374
 375         /*
 376          * De-register any async callbacks.
 377          */
 378         xpt_register_async(0, cdasync, periph, periph->path);
 379
 380         softc->flags |= CD_FLAG_INVALID;
 381
 382         /*
 383          * Return all queued I/O with ENXIO.
 384          * XXX Handle any transactions queued to the card
 385          *     with XPT_ABORT_CCB.
 386          */
 387         bioq_flush(&softc->bio_queue, NULL, ENXIO);
 388
 389         /*
 390          * If this device is part of a changer, and it was scheduled
 391          * to run, remove it from the run queue since we just nuked
 392          * all of its scheduled I/O.
 393          */
 394         if ((softc->flags & CD_FLAG_CHANGER)
 395          && (softc->pinfo.index != CAM_UNQUEUED_INDEX))
 396                 camq_remove(&softc->changer->devq, softc->pinfo.index);
 397
 398         disk_gone(softc->disk);
 399         xpt_print(periph->path, "lost device\n");
 400 }
 401
 402 static void
 403 cdcleanup(struct cam_periph *periph)
 404 {
 405         struct cd_softc *softc;
 406
 407         softc = (struct cd_softc *)periph->softc;
 408
 409         xpt_print(periph->path, "removing device entry\n");
 410
 411         /*
 412          * In the queued, non-active case, the device in question
 413          * has already been removed from the changer run queue.  Since this
 414          * device is active, we need to de-activate it, and schedule
 415          * another device to run.  (if there is another one to run)
 416          */
 417         if ((softc->flags & CD_FLAG_CHANGER)
 418          && (softc->flags & CD_FLAG_ACTIVE)) {
 419
 420                 /*
 421                  * The purpose of the short timeout is soley to determine
 422                  * whether the current device has finished or not.  Well,
 423                  * since we're removing the active device, we know that it
 424                  * is finished.  So, get rid of the short timeout.
 425                  * Otherwise, if we're in the time period before the short
 426                  * timeout fires, and there are no other devices in the
 427                  * queue to run, there won't be any other device put in the
 428                  * active slot.  i.e., when we call cdrunchangerqueue()
 429                  * below, it won't do anything.  Then, when the short
 430                  * timeout fires, it'll look at the "current device", which
 431                  * we are free below, and possibly panic the kernel on a
 432                  * bogus pointer reference.
 433                  *
 434                  * The long timeout doesn't really matter, since we
 435                  * decrement the qfrozen_cnt to indicate that there is
 436                  * nothing in the active slot now.  Therefore, there won't
 437                  * be any bogus pointer references there.
 438                  */
 439                 if (softc->changer->flags & CHANGER_SHORT_TMOUT_SCHED) {
 440                         callout_stop(&softc->changer->short_handle);
 441                         softc->changer->flags &= ~CHANGER_SHORT_TMOUT_SCHED;
 442                 }
 443                 softc->changer->devq.qfrozen_cnt[0]--;
 444                 softc->changer->flags |= CHANGER_MANUAL_CALL;
 445                 cdrunchangerqueue(softc->changer);
 446         }
 447
 448         /*
 449          * If we're removing the last device on the changer, go ahead and
 450          * remove the changer device structure.
 451          */
 452         if ((softc->flags & CD_FLAG_CHANGER)
 453          && (--softc->changer->num_devices == 0)) {
 454
 455                 /*
 456                  * Theoretically, there shouldn't be any timeouts left, but
 457                  * I'm not completely sure that that will be the case.  So,
 458                  * it won't hurt to check and see if there are any left.
 459                  */
 460                 if (softc->changer->flags & CHANGER_TIMEOUT_SCHED) {
 461                         callout_stop(&softc->changer->long_handle);
 462                         softc->changer->flags &= ~CHANGER_TIMEOUT_SCHED;
 463                 }
 464
 465                 if (softc->changer->flags & CHANGER_SHORT_TMOUT_SCHED) {
 466                         callout_stop(&softc->changer->short_handle);
 467                         softc->changer->flags &= ~CHANGER_SHORT_TMOUT_SCHED;
 468                 }
 469
 470                 mtx_lock(&changerq_mtx);
 471                 STAILQ_REMOVE(&changerq, softc->changer, cdchanger,
 472                               changer_links);
 473                 num_changers--;
 474                 mtx_unlock(&changerq_mtx);
 475                 xpt_print(periph->path, "removing changer entry\n");
 476                 free(softc->changer, M_DEVBUF);
 477         }
 478         cam_periph_unlock(periph);
 479         if ((softc->flags & CD_FLAG_SCTX_INIT) != 0
 480             && sysctl_ctx_free(&softc->sysctl_ctx) != 0) {
 481                 xpt_print(periph->path, "can't remove sysctl context\n");
 482         }
 483
 484         disk_destroy(softc->disk);
 485         free(softc, M_DEVBUF);
 486         cam_periph_lock(periph);
 487 }
 488
 489 static void
 490 cdasync(void *callback_arg, u_int32_t code,
 491         struct cam_path *path, void *arg)
 492 {
 493         struct cam_periph *periph;
 494
 495         periph = (struct cam_periph *)callback_arg;
 496         switch (code) {
 497         case AC_FOUND_DEVICE:
 498         {
 499                 struct ccb_getdev *cgd;
 500                 cam_status status;
 501
 502                 cgd = (struct ccb_getdev *)arg;
 503                 if (cgd == NULL)
 504                         break;
 505
 506                 if (cgd->protocol != PROTO_SCSI)
 507                         break;
 508
 509                 if (SID_TYPE(&cgd->inq_data) != T_CDROM
 510                     && SID_TYPE(&cgd->inq_data) != T_WORM)
 511                         break;
 512
 513                 /*
 514                  * Allocate a peripheral instance for
 515                  * this device and start the probe
 516                  * process.
 517                  */
 518                 status = cam_periph_alloc(cdregister, cdoninvalidate,
 519                                           cdcleanup, cdstart,
 520                                           "cd", CAM_PERIPH_BIO,
 521                                           cgd->ccb_h.path, cdasync,
 522                                           AC_FOUND_DEVICE, cgd);
 523
 524                 if (status != CAM_REQ_CMP
 525                  && status != CAM_REQ_INPROG)
 526                         printf("cdasync: Unable to attach new device "
 527                                "due to status 0x%x\n", status);
 528
 529                 break;
 530         }
 531         case AC_SENT_BDR:
 532         case AC_BUS_RESET:
 533         {
 534                 struct cd_softc *softc;
 535                 struct ccb_hdr *ccbh;
 536
 537                 softc = (struct cd_softc *)periph->softc;
 538                 /*
 539                  * Don't fail on the expected unit attention
 540                  * that will occur.
 541                  */
 542                 softc->flags |= CD_FLAG_RETRY_UA;
 543                 LIST_FOREACH(ccbh, &softc->pending_ccbs, periph_links.le)
 544                         ccbh->ccb_state |= CD_CCB_RETRY_UA;
 545                 /* FALLTHROUGH */
 546         }
 547         default:
 548                 cam_periph_async(periph, code, path, arg);
 549                 break;
 550         }
 551 }
 552
 553 static void
 554 cdsysctlinit(void *context, int pending)
 555 {
 556         struct cam_periph *periph;
 557         struct cd_softc *softc;
 558         char tmpstr[80], tmpstr2[80];
 559
 560         periph = (struct cam_periph *)context;
 561         if (cam_periph_acquire(periph) != CAM_REQ_CMP)
 562                 return;
 563
 564         softc = (struct cd_softc *)periph->softc;
 565         snprintf(tmpstr, sizeof(tmpstr), "CAM CD unit %d", periph->unit_number);
 566         snprintf(tmpstr2, sizeof(tmpstr2), "%d", periph->unit_number);
 567
 568         sysctl_ctx_init(&softc->sysctl_ctx);
 569         softc->flags |= CD_FLAG_SCTX_INIT;
 570         softc->sysctl_tree = SYSCTL_ADD_NODE(&softc->sysctl_ctx,
 571                 SYSCTL_STATIC_CHILDREN(_kern_cam_cd), OID_AUTO,
 572                 tmpstr2, CTLFLAG_RD, 0, tmpstr);
 573
 574         if (softc->sysctl_tree == NULL) {
 575                 printf("cdsysctlinit: unable to allocate sysctl tree\n");
 576                 cam_periph_release(periph);
 577                 return;
 578         }
 579
 580         /*
 581          * Now register the sysctl handler, so the user can the value on
 582          * the fly.
 583          */
 584         SYSCTL_ADD_PROC(&softc->sysctl_ctx,SYSCTL_CHILDREN(softc->sysctl_tree),
 585                 OID_AUTO, "minimum_cmd_size", CTLTYPE_INT | CTLFLAG_RW,
 586                 &softc->minimum_command_size, 0, cdcmdsizesysctl, "I",
 587                 "Minimum CDB size");
 588
 589         cam_periph_release(periph);
 590 }
 591
 592 /*
 593  * We have a handler function for this so we can check the values when the
 594  * user sets them, instead of every time we look at them.
 595  */
 596 static int
 597 cdcmdsizesysctl(SYSCTL_HANDLER_ARGS)
 598 {
 599         int error, value;
 600
 601         value = *(int *)arg1;
 602
 603         error = sysctl_handle_int(oidp, &value, 0, req);
 604
 605         if ((error != 0)
 606          || (req->newptr == NULL))
 607                 return (error);
 608
 609         /*
 610          * The only real values we can have here are 6 or 10.  I don't
 611          * really forsee having 12 be an option at any time in the future.
 612          * So if the user sets something less than or equal to 6, we'll set
 613          * it to 6.  If he sets something greater than 6, we'll set it to 10.
 614          *
 615          * I suppose we could just return an error here for the wrong values,
 616          * but I don't think it's necessary to do so, as long as we can
 617          * determine the user's intent without too much trouble.
 618          */
 619         if (value < 6)
 620                 value = 6;
 621         else if (value > 6)
 622                 value = 10;
 623
 624         *(int *)arg1 = value;
 625
 626         return (0);
 627 }
 628
 629 static cam_status
 630 cdregister(struct cam_periph *periph, void *arg)
 631 {
 632         struct cd_softc *softc;
 633         struct ccb_pathinq cpi;
 634         struct ccb_getdev *cgd;
 635         char tmpstr[80];
 636         caddr_t match;
 637
 638         cgd = (struct ccb_getdev *)arg;
 639         if (periph == NULL) {
 640                 printf("cdregister: periph was NULL!!\n");
 641                 return(CAM_REQ_CMP_ERR);
 642         }
 643         if (cgd == NULL) {
 644                 printf("cdregister: no getdev CCB, can't register device\n");
 645                 return(CAM_REQ_CMP_ERR);
 646         }
 647
 648         softc = (struct cd_softc *)malloc(sizeof(*softc),M_DEVBUF,
 649             M_NOWAIT | M_ZERO);
 650         if (softc == NULL) {
 651                 printf("cdregister: Unable to probe new device. "
 652                        "Unable to allocate softc\n");
 653                 return(CAM_REQ_CMP_ERR);
 654         }
 655
 656         LIST_INIT(&softc->pending_ccbs);
 657         STAILQ_INIT(&softc->mode_queue);
 658         softc->state = CD_STATE_PROBE;
 659         bioq_init(&softc->bio_queue);
 660         if (SID_IS_REMOVABLE(&cgd->inq_data))
 661                 softc->flags |= CD_FLAG_DISC_REMOVABLE;
 662
 663         periph->softc = softc;
 664         softc->periph = periph;
 665
 666         /*
 667          * See if this device has any quirks.
 668          */
 669         match = cam_quirkmatch((caddr_t)&cgd->inq_data,
 670                                (caddr_t)cd_quirk_table,
 671                                sizeof(cd_quirk_table)/sizeof(*cd_quirk_table),
 672                                sizeof(*cd_quirk_table), scsi_inquiry_match);
 673
 674         if (match != NULL)
 675                 softc->quirks = ((struct cd_quirk_entry *)match)->quirks;
 676         else
 677                 softc->quirks = CD_Q_NONE;
 678
 679         /* Check if the SIM does not want 6 byte commands */
 680         bzero(&cpi, sizeof(cpi));
 681         xpt_setup_ccb(&cpi.ccb_h, periph->path, CAM_PRIORITY_NORMAL);
 682         cpi.ccb_h.func_code = XPT_PATH_INQ;
 683         xpt_action((union ccb *)&cpi);
 684         if (cpi.ccb_h.status == CAM_REQ_CMP && (cpi.hba_misc & PIM_NO_6_BYTE))
 685                 softc->quirks |= CD_Q_10_BYTE_ONLY;
 686
 687         TASK_INIT(&softc->sysctl_task, 0, cdsysctlinit, periph);
 688
 689         /* The default is 6 byte commands, unless quirked otherwise */
 690         if (softc->quirks & CD_Q_10_BYTE_ONLY)
 691                 softc->minimum_command_size = 10;
 692         else
 693                 softc->minimum_command_size = 6;
 694
 695         (void)cam_periph_hold(periph, PRIBIO);
 696         cam_periph_unlock(periph);
 697         /*
 698          * Load the user's default, if any.
 699          */
 700         snprintf(tmpstr, sizeof(tmpstr), "kern.cam.cd.%d.minimum_cmd_size",
 701                  periph->unit_number);
 702         TUNABLE_INT_FETCH(tmpstr, &softc->minimum_command_size);
 703
 704         /* 6 and 10 are the only permissible values here. */
 705         if (softc->minimum_command_size < 6)
 706                 softc->minimum_command_size = 6;
 707         else if (softc->minimum_command_size > 6)
 708                 softc->minimum_command_size = 10;
 709
 710         /*
 711          * We need to register the statistics structure for this device,
 712          * but we don't have the blocksize yet for it.  So, we register
 713          * the structure and indicate that we don't have the blocksize
 714          * yet.  Unlike other SCSI peripheral drivers, we explicitly set
 715          * the device type here to be CDROM, rather than just ORing in
 716          * the device type.  This is because this driver can attach to either
 717          * CDROM or WORM devices, and we want this peripheral driver to
 718          * show up in the devstat list as a CD peripheral driver, not a
 719          * WORM peripheral driver.  WORM drives will also have the WORM
 720          * driver attached to them.
 721          */
 722         softc->disk = disk_alloc();
 723         softc->disk->d_devstat = devstat_new_entry("cd",
 724                           periph->unit_number, 0,
 725                           DEVSTAT_BS_UNAVAILABLE,
 726                           DEVSTAT_TYPE_CDROM |
 727                           XPORT_DEVSTAT_TYPE(cpi.transport),
 728                           DEVSTAT_PRIORITY_CD);
 729         softc->disk->d_open = cdopen;
 730         softc->disk->d_close = cdclose;
 731         softc->disk->d_strategy = cdstrategy;
 732         softc->disk->d_ioctl = cdioctl;
 733         softc->disk->d_name = "cd";
 734         softc->disk->d_unit = periph->unit_number;
 735         softc->disk->d_drv1 = periph;
 736         if (cpi.maxio == 0)
 737                 softc->disk->d_maxsize = DFLTPHYS;      /* traditional default */
 738         else if (cpi.maxio > MAXPHYS)
 739                 softc->disk->d_maxsize = MAXPHYS;       /* for safety */
 740         else
 741                 softc->disk->d_maxsize = cpi.maxio;
 742         softc->disk->d_flags = 0;
 743         disk_create(softc->disk, DISK_VERSION);
 744         cam_periph_lock(periph);
 745         cam_periph_unhold(periph);
 746
 747         /*
 748          * Add an async callback so that we get
 749          * notified if this device goes away.
 750          */
 751         xpt_register_async(AC_SENT_BDR | AC_BUS_RESET | AC_LOST_DEVICE,
 752                            cdasync, periph, periph->path);
 753
 754         /*
 755          * If the target lun is greater than 0, we most likely have a CD
 756          * changer device.  Check the quirk entries as well, though, just
 757          * in case someone has a CD tower with one lun per drive or
 758          * something like that.  Also, if we know up front that a
 759          * particular device is a changer, we can mark it as such starting
 760          * with lun 0, instead of lun 1.  It shouldn't be necessary to have
 761          * a quirk entry to define something as a changer, however.
 762          */
 763         if (((cgd->ccb_h.target_lun > 0)
 764           && ((softc->quirks & CD_Q_NO_CHANGER) == 0))
 765          || ((softc->quirks & CD_Q_CHANGER) != 0)) {
 766                 struct cdchanger *nchanger;
 767                 struct cam_periph *nperiph;
 768                 struct cam_path *path;
 769                 cam_status status;
 770                 int found;
 771
 772                 /* Set the changer flag in the current device's softc */
 773                 softc->flags |= CD_FLAG_CHANGER;
 774
 775                 /*
 776                  * Now, look around for an existing changer device with the
 777                  * same path and target ID as the current device.
 778                  */
 779                 mtx_lock(&changerq_mtx);
 780                 for (found = 0,
 781                      nchanger = (struct cdchanger *)STAILQ_FIRST(&changerq);
 782                      nchanger != NULL;
 783                      nchanger = STAILQ_NEXT(nchanger, changer_links)){
 784                         if ((nchanger->path_id == cgd->ccb_h.path_id)
 785                          && (nchanger->target_id == cgd->ccb_h.target_id)) {
 786                                 found = 1;
 787                                 break;
 788                         }
 789                 }
 790                 mtx_unlock(&changerq_mtx);
 791
 792                 /*
 793                  * If we found a matching entry, just add this device to
 794                  * the list of devices on this changer.
 795                  */
 796                 if (found == 1) {
 797                         struct chdevlist *chlunhead;
 798
 799                         chlunhead = &nchanger->chluns;
 800
 801                         /*
 802                          * XXX KDM look at consolidating this code with the
 803                          * code below in a separate function.
 804                          */
 805
 806                         /*
 807                          * Create a path with lun id 0, and see if we can
 808                          * find a matching device
 809                          */
 810                         status = xpt_create_path(&path, /*periph*/ periph,
 811                                                  cgd->ccb_h.path_id,
 812                                                  cgd->ccb_h.target_id, 0);
 813
 814                         if ((status == CAM_REQ_CMP)
 815                          && ((nperiph = cam_periph_find(path, "cd")) != NULL)){
 816                                 struct cd_softc *nsoftc;
 817
 818                                 nsoftc = (struct cd_softc *)nperiph->softc;
 819
 820                                 if ((nsoftc->flags & CD_FLAG_CHANGER) == 0){
 821                                         nsoftc->flags |= CD_FLAG_CHANGER;
 822                                         nchanger->num_devices++;
 823                                         if (camq_resize(&nchanger->devq,
 824                                            nchanger->num_devices)!=CAM_REQ_CMP){
 825                                                 printf("cdregister: "
 826                                                        "camq_resize "
 827                                                        "failed, changer "
 828                                                        "support may "
 829                                                        "be messed up\n");
 830                                         }
 831                                         nsoftc->changer = nchanger;
 832                                         nsoftc->pinfo.index =CAM_UNQUEUED_INDEX;
 833
 834                                         STAILQ_INSERT_TAIL(&nchanger->chluns,
 835                                                           nsoftc,changer_links);
 836                                 }
 837                                 xpt_free_path(path);
 838                         } else if (status == CAM_REQ_CMP)
 839                                 xpt_free_path(path);
 840                         else {
 841                                 printf("cdregister: unable to allocate path\n"
 842                                        "cdregister: changer support may be "
 843                                        "broken\n");
 844                         }
 845
 846                         nchanger->num_devices++;
 847
 848                         softc->changer = nchanger;
 849                         softc->pinfo.index = CAM_UNQUEUED_INDEX;
 850
 851                         if (camq_resize(&nchanger->devq,
 852                             nchanger->num_devices) != CAM_REQ_CMP) {
 853                                 printf("cdregister: camq_resize "
 854                                        "failed, changer support may "
 855                                        "be messed up\n");
 856                         }
 857
 858                         STAILQ_INSERT_TAIL(chlunhead, softc, changer_links);
 859                 }
 860                 /*
 861                  * In this case, we don't already have an entry for this
 862                  * particular changer, so we need to create one, add it to
 863                  * the queue, and queue this device on the list for this
 864                  * changer.  Before we queue this device, however, we need
 865                  * to search for lun id 0 on this target, and add it to the
 866                  * queue first, if it exists.  (and if it hasn't already
 867                  * been marked as part of the changer.)
 868                  */
 869                 else {
 870                         nchanger = malloc(sizeof(struct cdchanger),
 871                                 M_DEVBUF, M_NOWAIT | M_ZERO);
 872                         if (nchanger == NULL) {
 873                                 softc->flags &= ~CD_FLAG_CHANGER;
 874                                 printf("cdregister: unable to malloc "
 875                                        "changer structure\ncdregister: "
 876                                        "changer support disabled\n");
 877
 878                                 /*
 879                                  * Yes, gotos can be gross but in this case
 880                                  * I think it's justified..
 881                                  */
 882                                 goto cdregisterexit;
 883                         }
 884                         if (camq_init(&nchanger->devq, 1) != 0) {
 885                                 softc->flags &= ~CD_FLAG_CHANGER;
 886                                 printf("cdregister: changer support "
 887                                        "disabled\n");
 888                                 goto cdregisterexit;
 889                         }
 890
 891                         nchanger->path_id = cgd->ccb_h.path_id;
 892                         nchanger->target_id = cgd->ccb_h.target_id;
 893
 894                         /* this is superfluous, but it makes things clearer */
 895                         nchanger->num_devices = 0;
 896
 897                         STAILQ_INIT(&nchanger->chluns);
 898
 899                         callout_init_mtx(&nchanger->long_handle,
 900                             periph->sim->mtx, 0);
 901                         callout_init_mtx(&nchanger->short_handle,
 902                             periph->sim->mtx, 0);
 903
 904                         mtx_lock(&changerq_mtx);
 905                         num_changers++;
 906                         STAILQ_INSERT_TAIL(&changerq, nchanger,
 907                                            changer_links);
 908                         mtx_unlock(&changerq_mtx);
 909
 910                         /*
 911                          * Create a path with lun id 0, and see if we can
 912                          * find a matching device
 913                          */
 914                         status = xpt_create_path(&path, /*periph*/ periph,
 915                                                  cgd->ccb_h.path_id,
 916                                                  cgd->ccb_h.target_id, 0);
 917
 918                         /*
 919                          * If we were able to allocate the path, and if we
 920                          * find a matching device and it isn't already
 921                          * marked as part of a changer, then we add it to
 922                          * the current changer.
 923                          */
 924                         if ((status == CAM_REQ_CMP)
 925                          && ((nperiph = cam_periph_find(path, "cd")) != NULL)
 926                          && ((((struct cd_softc *)periph->softc)->flags &
 927                                CD_FLAG_CHANGER) == 0)) {
 928                                 struct cd_softc *nsoftc;
 929
 930                                 nsoftc = (struct cd_softc *)nperiph->softc;
 931
 932                                 nsoftc->flags |= CD_FLAG_CHANGER;
 933                                 nchanger->num_devices++;
 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                                 nsoftc->changer = nchanger;
 941                                 nsoftc->pinfo.index = CAM_UNQUEUED_INDEX;
 942
 943                                 STAILQ_INSERT_TAIL(&nchanger->chluns,
 944                                                    nsoftc, changer_links);
 945                                 xpt_free_path(path);
 946                         } else if (status == CAM_REQ_CMP)
 947                                 xpt_free_path(path);
 948                         else {
 949                                 printf("cdregister: unable to allocate path\n"
 950                                        "cdregister: changer support may be "
 951                                        "broken\n");
 952                         }
 953
 954                         softc->changer = nchanger;
 955                         softc->pinfo.index = CAM_UNQUEUED_INDEX;
 956                         nchanger->num_devices++;
 957                         if (camq_resize(&nchanger->devq,
 958                             nchanger->num_devices) != CAM_REQ_CMP) {
 959                                 printf("cdregister: camq_resize "
 960                                        "failed, changer support may "
 961                                        "be messed up\n");
 962                         }
 963                         STAILQ_INSERT_TAIL(&nchanger->chluns, softc,
 964                                            changer_links);
 965                 }
 966         }
 967
 968 cdregisterexit:
 969
 970         /*
 971          * Refcount and block open attempts until we are setup
 972          * Can't block
 973          */
 974         (void)cam_periph_hold(periph, PRIBIO);
 975
 976         if ((softc->flags & CD_FLAG_CHANGER) == 0)
 977                 xpt_schedule(periph, CAM_PRIORITY_DEV);
 978         else
 979                 cdschedule(periph, CAM_PRIORITY_DEV);
 980
 981         return(CAM_REQ_CMP);
 982 }
 983
 984 static int
 985 cdopen(struct disk *dp)
 986 {
 987         struct cam_periph *periph;
 988         struct cd_softc *softc;
 989         int error;
 990
 991         periph = (struct cam_periph *)dp->d_drv1;
 992         if (periph == NULL)
 993                 return (ENXIO);
 994
 995         softc = (struct cd_softc *)periph->softc;
 996
 997         if (cam_periph_acquire(periph) != CAM_REQ_CMP)
 998                 return(ENXIO);
 999
1000         cam_periph_lock(periph);
1001
1002         if (softc->flags & CD_FLAG_INVALID) {
1003                 cam_periph_unlock(periph);
1004                 cam_periph_release(periph);
1005                 return(ENXIO);
1006         }
1007
1008         if ((error = cam_periph_hold(periph, PRIBIO | PCATCH)) != 0) {
1009                 cam_periph_unlock(periph);
1010                 cam_periph_release(periph);
1011                 return (error);
1012         }
1013
1014         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE | CAM_DEBUG_PERIPH,
1015             ("cdopen\n"));
1016
1017         /*
1018          * Check for media, and set the appropriate flags.  We don't bail
1019          * if we don't have media, but then we don't allow anything but the
1020          * CDIOCEJECT/CDIOCCLOSE ioctls if there is no media.
1021          */
1022         cdcheckmedia(periph);
1023
1024         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("leaving cdopen\n"));
1025         cam_periph_unhold(periph);
1026
1027         /* Closes aren't symmetrical with opens, so fix up the refcounting. */
1028         if ((softc->flags & CD_FLAG_OPEN) == 0) {
1029                 softc->flags |= CD_FLAG_OPEN;
1030                 cam_periph_unlock(periph);
1031         } else {
1032                 cam_periph_unlock(periph);
1033                 cam_periph_release(periph);
1034         }
1035
1036         return (0);
1037 }
1038
1039 static int
1040 cdclose(struct disk *dp)
1041 {
1042         struct  cam_periph *periph;
1043         struct  cd_softc *softc;
1044
1045         periph = (struct cam_periph *)dp->d_drv1;
1046         if (periph == NULL)
1047                 return (ENXIO);
1048
1049         softc = (struct cd_softc *)periph->softc;
1050
1051         cam_periph_lock(periph);
1052         if (cam_periph_hold(periph, PRIBIO) != 0) {
1053                 cam_periph_unlock(periph);
1054                 cam_periph_release(periph);
1055                 return (0);
1056         }
1057
1058         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE | CAM_DEBUG_PERIPH,
1059             ("cdclose\n"));
1060
1061         if ((softc->flags & CD_FLAG_DISC_REMOVABLE) != 0)
1062                 cdprevent(periph, PR_ALLOW);
1063
1064         /*
1065          * Since we're closing this CD, mark the blocksize as unavailable.
1066          * It will be marked as available when the CD is opened again.
1067          */
1068         softc->disk->d_devstat->flags |= DEVSTAT_BS_UNAVAILABLE;
1069
1070         /*
1071          * We'll check the media and toc again at the next open().
1072          */
1073         softc->flags &= ~(CD_FLAG_VALID_MEDIA|CD_FLAG_VALID_TOC|CD_FLAG_OPEN);
1074
1075         cam_periph_unhold(periph);
1076         cam_periph_unlock(periph);
1077         cam_periph_release(periph);
1078
1079         return (0);
1080 }
1081
1082 static void
1083 cdshorttimeout(void *arg)
1084 {
1085         struct cdchanger *changer;
1086
1087         changer = (struct cdchanger *)arg;
1088
1089         /* Always clear the short timeout flag, since that's what we're in */
1090         changer->flags &= ~CHANGER_SHORT_TMOUT_SCHED;
1091
1092         /*
1093          * Check to see if there is any more pending or outstanding I/O for
1094          * this device.  If not, move it out of the active slot.
1095          */
1096         if ((bioq_first(&changer->cur_device->bio_queue) == NULL)
1097          && (changer->cur_device->outstanding_cmds == 0)) {
1098                 changer->flags |= CHANGER_MANUAL_CALL;
1099                 cdrunchangerqueue(changer);
1100         }
1101 }
1102
1103 /*
1104  * This is a wrapper for xpt_schedule.  It only applies to changers.
1105  */
1106 static void
1107 cdschedule(struct cam_periph *periph, int priority)
1108 {
1109         struct cd_softc *softc;
1110
1111         softc = (struct cd_softc *)periph->softc;
1112
1113         /*
1114          * If this device isn't currently queued, and if it isn't
1115          * the active device, then we queue this device and run the
1116          * changer queue if there is no timeout scheduled to do it.
1117          * If this device is the active device, just schedule it
1118          * to run again.  If this device is queued, there should be
1119          * a timeout in place already that will make sure it runs.
1120          */
1121         if ((softc->pinfo.index == CAM_UNQUEUED_INDEX)
1122          && ((softc->flags & CD_FLAG_ACTIVE) == 0)) {
1123                 /*
1124                  * We don't do anything with the priority here.
1125                  * This is strictly a fifo queue.
1126                  */
1127                 softc->pinfo.priority = CAM_PRIORITY_NORMAL;
1128                 softc->pinfo.generation = ++softc->changer->devq.generation;
1129                 camq_insert(&softc->changer->devq, (cam_pinfo *)softc);
1130
1131                 /*
1132                  * Since we just put a device in the changer queue,
1133                  * check and see if there is a timeout scheduled for
1134                  * this changer.  If so, let the timeout handle
1135                  * switching this device into the active slot.  If
1136                  * not, manually call the timeout routine to
1137                  * bootstrap things.
1138                  */
1139                 if (((softc->changer->flags & CHANGER_TIMEOUT_SCHED)==0)
1140                  && ((softc->changer->flags & CHANGER_NEED_TIMEOUT)==0)
1141                  && ((softc->changer->flags & CHANGER_SHORT_TMOUT_SCHED)==0)){
1142                         softc->changer->flags |= CHANGER_MANUAL_CALL;
1143                         cdrunchangerqueue(softc->changer);
1144                 }
1145         } else if ((softc->flags & CD_FLAG_ACTIVE)
1146                 && ((softc->flags & CD_FLAG_SCHED_ON_COMP) == 0))
1147                 xpt_schedule(periph, priority);
1148 }
1149
1150 static void
1151 cdrunchangerqueue(void *arg)
1152 {
1153         struct cd_softc *softc;
1154         struct cdchanger *changer;
1155         int called_from_timeout;
1156
1157         changer = (struct cdchanger *)arg;
1158
1159         /*
1160          * If we have NOT been called from cdstrategy() or cddone(), and
1161          * instead from a timeout routine, go ahead and clear the
1162          * timeout flag.
1163          */
1164         if ((changer->flags & CHANGER_MANUAL_CALL) == 0) {
1165                 changer->flags &= ~CHANGER_TIMEOUT_SCHED;
1166                 called_from_timeout = 1;
1167         } else
1168                 called_from_timeout = 0;
1169
1170         /* Always clear the manual call flag */
1171         changer->flags &= ~CHANGER_MANUAL_CALL;
1172
1173         /* nothing to do if the queue is empty */
1174         if (changer->devq.entries <= 0) {
1175                 return;
1176         }
1177
1178         /*
1179          * If the changer queue is frozen, that means we have an active
1180          * device.
1181          */
1182         if (changer->devq.qfrozen_cnt[0] > 0) {
1183
1184                 /*
1185                  * We always need to reset the frozen count and clear the
1186                  * active flag.
1187                  */
1188                 changer->devq.qfrozen_cnt[0]--;
1189                 changer->cur_device->flags &= ~CD_FLAG_ACTIVE;
1190                 changer->cur_device->flags &= ~CD_FLAG_SCHED_ON_COMP;
1191
1192                 if (changer->cur_device->outstanding_cmds > 0) {
1193                         changer->cur_device->flags |= CD_FLAG_SCHED_ON_COMP;
1194                         changer->cur_device->bufs_left =
1195                                 changer->cur_device->outstanding_cmds;
1196                         if (called_from_timeout) {
1197                                 callout_reset(&changer->long_handle,
1198                                     changer_max_busy_seconds * hz,
1199                                     cdrunchangerqueue, changer);
1200                                 changer->flags |= CHANGER_TIMEOUT_SCHED;
1201                         }
1202                         return;
1203                 }
1204
1205                 /*
1206                  * Check to see whether the current device has any I/O left
1207                  * to do.  If so, requeue it at the end of the queue.  If
1208                  * not, there is no need to requeue it.
1209                  */
1210                 if (bioq_first(&changer->cur_device->bio_queue) != NULL) {
1211
1212                         changer->cur_device->pinfo.generation =
1213                                 ++changer->devq.generation;
1214                         camq_insert(&changer->devq,
1215                                 (cam_pinfo *)changer->cur_device);
1216                 }
1217         }
1218
1219         softc = (struct cd_softc *)camq_remove(&changer->devq, CAMQ_HEAD);
1220
1221         changer->cur_device = softc;
1222
1223         changer->devq.qfrozen_cnt[0]++;
1224         softc->flags |= CD_FLAG_ACTIVE;
1225
1226         /* Just in case this device is waiting */
1227         wakeup(&softc->changer);
1228         xpt_schedule(softc->periph, CAM_PRIORITY_NORMAL);
1229
1230         /*
1231          * Get rid of any pending timeouts, and set a flag to schedule new
1232          * ones so this device gets its full time quantum.
1233          */
1234         if (changer->flags & CHANGER_TIMEOUT_SCHED) {
1235                 callout_stop(&changer->long_handle);
1236                 changer->flags &= ~CHANGER_TIMEOUT_SCHED;
1237         }
1238
1239         if (changer->flags & CHANGER_SHORT_TMOUT_SCHED) {
1240                 callout_stop(&changer->short_handle);
1241                 changer->flags &= ~CHANGER_SHORT_TMOUT_SCHED;
1242         }
1243
1244         /*
1245          * We need to schedule timeouts, but we only do this after the
1246          * first transaction has completed.  This eliminates the changer
1247          * switch time.
1248          */
1249         changer->flags |= CHANGER_NEED_TIMEOUT;
1250 }
1251
1252 static void
1253 cdchangerschedule(struct cd_softc *softc)
1254 {
1255         struct cdchanger *changer;
1256
1257         changer = softc->changer;
1258
1259         /*
1260          * If this is a changer, and this is the current device,
1261          * and this device has at least the minimum time quantum to
1262          * run, see if we can switch it out.
1263          */
1264         if ((softc->flags & CD_FLAG_ACTIVE)
1265          && ((changer->flags & CHANGER_SHORT_TMOUT_SCHED) == 0)
1266          && ((changer->flags & CHANGER_NEED_TIMEOUT) == 0)) {
1267                 /*
1268                  * We try three things here.  The first is that we
1269                  * check to see whether the schedule on completion
1270                  * flag is set.  If it is, we decrement the number
1271                  * of buffers left, and if it's zero, we reschedule.
1272                  * Next, we check to see whether the pending buffer
1273                  * queue is empty and whether there are no
1274                  * outstanding transactions.  If so, we reschedule.
1275                  * Next, we see if the pending buffer queue is empty.
1276                  * If it is, we set the number of buffers left to
1277                  * the current active buffer count and set the
1278                  * schedule on complete flag.
1279                  */
1280                 if (softc->flags & CD_FLAG_SCHED_ON_COMP) {
1281                         if (--softc->bufs_left == 0) {
1282                                 softc->changer->flags |=
1283                                         CHANGER_MANUAL_CALL;
1284                                 softc->flags &= ~CD_FLAG_SCHED_ON_COMP;
1285                                 cdrunchangerqueue(softc->changer);
1286                         }
1287                 } else if ((bioq_first(&softc->bio_queue) == NULL)
1288                         && (softc->outstanding_cmds == 0)) {
1289                         softc->changer->flags |= CHANGER_MANUAL_CALL;
1290                         cdrunchangerqueue(softc->changer);
1291                 }
1292         } else if ((softc->changer->flags & CHANGER_NEED_TIMEOUT)
1293                 && (softc->flags & CD_FLAG_ACTIVE)) {
1294
1295                 /*
1296                  * Now that the first transaction to this
1297                  * particular device has completed, we can go ahead
1298                  * and schedule our timeouts.
1299                  */
1300                 if ((changer->flags & CHANGER_TIMEOUT_SCHED) == 0) {
1301                         callout_reset(&changer->long_handle,
1302                             changer_max_busy_seconds * hz,
1303                             cdrunchangerqueue, changer);
1304                         changer->flags |= CHANGER_TIMEOUT_SCHED;
1305                 } else
1306                         printf("cdchangerschedule: already have a long"
1307                                " timeout!\n");
1308
1309                 if ((changer->flags & CHANGER_SHORT_TMOUT_SCHED) == 0) {
1310                         callout_reset(&changer->short_handle,
1311                             changer_min_busy_seconds * hz,
1312                             cdshorttimeout, changer);
1313                         changer->flags |= CHANGER_SHORT_TMOUT_SCHED;
1314                 } else
1315                         printf("cdchangerschedule: already have a short "
1316                                "timeout!\n");
1317
1318                 /*
1319                  * We just scheduled timeouts, no need to schedule
1320                  * more.
1321                  */
1322                 changer->flags &= ~CHANGER_NEED_TIMEOUT;
1323
1324         }
1325 }
1326
1327 static int
1328 cdrunccb(union ccb *ccb, int (*error_routine)(union ccb *ccb,
1329                                               u_int32_t cam_flags,
1330                                               u_int32_t sense_flags),
1331          u_int32_t cam_flags, u_int32_t sense_flags)
1332 {
1333         struct cd_softc *softc;
1334         struct cam_periph *periph;
1335         int error;
1336
1337         periph = xpt_path_periph(ccb->ccb_h.path);
1338         softc = (struct cd_softc *)periph->softc;
1339
1340         error = cam_periph_runccb(ccb, error_routine, cam_flags, sense_flags,
1341                                   softc->disk->d_devstat);
1342
1343         if (softc->flags & CD_FLAG_CHANGER)
1344                 cdchangerschedule(softc);
1345
1346         return(error);
1347 }
1348
1349 static union ccb *
1350 cdgetccb(struct cam_periph *periph, u_int32_t priority)
1351 {
1352         struct cd_softc *softc;
1353
1354         softc = (struct cd_softc *)periph->softc;
1355
1356         if (softc->flags & CD_FLAG_CHANGER) {
1357                 /*
1358                  * This should work the first time this device is woken up,
1359                  * but just in case it doesn't, we use a while loop.
1360                  */
1361                 while ((softc->flags & CD_FLAG_ACTIVE) == 0) {
1362                         /*
1363                          * If this changer isn't already queued, queue it up.
1364                          */
1365                         if (softc->pinfo.index == CAM_UNQUEUED_INDEX) {
1366                                 softc->pinfo.priority = CAM_PRIORITY_NORMAL;
1367                                 softc->pinfo.generation =
1368                                         ++softc->changer->devq.generation;
1369                                 camq_insert(&softc->changer->devq,
1370                                             (cam_pinfo *)softc);
1371                         }
1372                         if (((softc->changer->flags & CHANGER_TIMEOUT_SCHED)==0)
1373                          && ((softc->changer->flags & CHANGER_NEED_TIMEOUT)==0)
1374                          && ((softc->changer->flags
1375                               & CHANGER_SHORT_TMOUT_SCHED)==0)) {
1376                                 softc->changer->flags |= CHANGER_MANUAL_CALL;
1377                                 cdrunchangerqueue(softc->changer);
1378                         } else
1379                                 msleep(&softc->changer, periph->sim->mtx,
1380                                     PRIBIO, "cgticb", 0);
1381                 }
1382         }
1383         return(cam_periph_getccb(periph, priority));
1384 }
1385
1386
1387 /*
1388  * Actually translate the requested transfer into one the physical driver
1389  * can understand.  The transfer is described by a buf and will include
1390  * only one physical transfer.
1391  */
1392 static void
1393 cdstrategy(struct bio *bp)
1394 {
1395         struct cam_periph *periph;
1396         struct cd_softc *softc;
1397
1398         periph = (struct cam_periph *)bp->bio_disk->d_drv1;
1399         if (periph == NULL) {
1400                 biofinish(bp, NULL, ENXIO);
1401                 return;
1402         }
1403
1404         cam_periph_lock(periph);
1405         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE,
1406             ("cdstrategy(%p)\n", bp));
1407
1408         softc = (struct cd_softc *)periph->softc;
1409
1410         /*
1411          * If the device has been made invalid, error out
1412          */
1413         if ((softc->flags & CD_FLAG_INVALID)) {
1414                 cam_periph_unlock(periph);
1415                 biofinish(bp, NULL, ENXIO);
1416                 return;
1417         }
1418
1419         /*
1420          * If we don't have valid media, look for it before trying to
1421          * schedule the I/O.
1422          */
1423         if ((softc->flags & CD_FLAG_VALID_MEDIA) == 0) {
1424                 int error;
1425
1426                 error = cdcheckmedia(periph);
1427                 if (error != 0) {
1428                         cam_periph_unlock(periph);
1429                         biofinish(bp, NULL, error);
1430                         return;
1431                 }
1432         }
1433
1434         /*
1435          * Place it in the queue of disk activities for this disk
1436          */
1437         bioq_disksort(&softc->bio_queue, bp);
1438
1439         /*
1440          * Schedule ourselves for performing the work.  We do things
1441          * differently for changers.
1442          */
1443         if ((softc->flags & CD_FLAG_CHANGER) == 0)
1444                 xpt_schedule(periph, CAM_PRIORITY_NORMAL);
1445         else
1446                 cdschedule(periph, CAM_PRIORITY_NORMAL);
1447
1448         cam_periph_unlock(periph);
1449         return;
1450 }
1451
1452 static void
1453 cdstart(struct cam_periph *periph, union ccb *start_ccb)
1454 {
1455         struct cd_softc *softc;
1456         struct bio *bp;
1457         struct ccb_scsiio *csio;
1458         struct scsi_read_capacity_data *rcap;
1459
1460         softc = (struct cd_softc *)periph->softc;
1461
1462         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("entering cdstart\n"));
1463
1464         switch (softc->state) {
1465         case CD_STATE_NORMAL:
1466         {
1467                 bp = bioq_first(&softc->bio_queue);
1468                 if (periph->immediate_priority <= periph->pinfo.priority) {
1469                         start_ccb->ccb_h.ccb_state = CD_CCB_WAITING;
1470
1471                         SLIST_INSERT_HEAD(&periph->ccb_list, &start_ccb->ccb_h,
1472                                           periph_links.sle);
1473                         periph->immediate_priority = CAM_PRIORITY_NONE;
1474                         wakeup(&periph->ccb_list);
1475                 } else if (bp == NULL) {
1476                         xpt_release_ccb(start_ccb);
1477                 } else {
1478                         bioq_remove(&softc->bio_queue, bp);
1479
1480                         scsi_read_write(&start_ccb->csio,
1481                                         /*retries*/ cd_retry_count,
1482                                         /* cbfcnp */ cddone,
1483                                         MSG_SIMPLE_Q_TAG,
1484                                         /* read */bp->bio_cmd == BIO_READ,
1485                                         /* byte2 */ 0,
1486                                         /* minimum_cmd_size */ 10,
1487                                         /* lba */ bp->bio_offset /
1488                                           softc->params.blksize,
1489                                         bp->bio_bcount / softc->params.blksize,
1490                                         /* data_ptr */ bp->bio_data,
1491                                         /* dxfer_len */ bp->bio_bcount,
1492                                         /* sense_len */ SSD_FULL_SIZE,
1493                                         /* timeout */ 30000);
1494                         /* Use READ CD command for audio tracks. */
1495                         if (softc->params.blksize == 2352) {
1496                                 start_ccb->csio.cdb_io.cdb_bytes[0] = READ_CD;
1497                                 start_ccb->csio.cdb_io.cdb_bytes[9] = 0xf8;
1498                                 start_ccb->csio.cdb_io.cdb_bytes[10] = 0;
1499                                 start_ccb->csio.cdb_io.cdb_bytes[11] = 0;
1500                                 start_ccb->csio.cdb_len = 12;
1501                         }
1502                         start_ccb->ccb_h.ccb_state = CD_CCB_BUFFER_IO;
1503
1504
1505                         LIST_INSERT_HEAD(&softc->pending_ccbs,
1506                                          &start_ccb->ccb_h, periph_links.le);
1507                         softc->outstanding_cmds++;
1508
1509                         /* We expect a unit attention from this device */
1510                         if ((softc->flags & CD_FLAG_RETRY_UA) != 0) {
1511                                 start_ccb->ccb_h.ccb_state |= CD_CCB_RETRY_UA;
1512                                 softc->flags &= ~CD_FLAG_RETRY_UA;
1513                         }
1514
1515                         start_ccb->ccb_h.ccb_bp = bp;
1516                         bp = bioq_first(&softc->bio_queue);
1517
1518                         xpt_action(start_ccb);
1519                 }
1520                 if (bp != NULL) {
1521                         /* Have more work to do, so ensure we stay scheduled */
1522                         xpt_schedule(periph, CAM_PRIORITY_NORMAL);
1523                 }
1524                 break;
1525         }
1526         case CD_STATE_PROBE:
1527         {
1528
1529                 rcap = (struct scsi_read_capacity_data *)malloc(sizeof(*rcap),
1530                     M_SCSICD, M_NOWAIT | M_ZERO);
1531                 if (rcap == NULL) {
1532                         xpt_print(periph->path,
1533                             "cdstart: Couldn't malloc read_capacity data\n");
1534                         /* cd_free_periph??? */
1535                         break;
1536                 }
1537                 csio = &start_ccb->csio;
1538                 scsi_read_capacity(csio,
1539                                    /*retries*/ cd_retry_count,
1540                                    cddone,
1541                                    MSG_SIMPLE_Q_TAG,
1542                                    rcap,
1543                                    SSD_FULL_SIZE,
1544                                    /*timeout*/20000);
1545                 start_ccb->ccb_h.ccb_bp = NULL;
1546                 start_ccb->ccb_h.ccb_state = CD_CCB_PROBE;
1547                 xpt_action(start_ccb);
1548                 break;
1549         }
1550         }
1551 }
1552
1553 static void
1554 cddone(struct cam_periph *periph, union ccb *done_ccb)
1555 {
1556         struct cd_softc *softc;
1557         struct ccb_scsiio *csio;
1558
1559         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("entering cddone\n"));
1560
1561         softc = (struct cd_softc *)periph->softc;
1562         csio = &done_ccb->csio;
1563
1564         switch (csio->ccb_h.ccb_state & CD_CCB_TYPE_MASK) {
1565         case CD_CCB_BUFFER_IO:
1566         {
1567                 struct bio      *bp;
1568                 int             error;
1569
1570                 bp = (struct bio *)done_ccb->ccb_h.ccb_bp;
1571                 error = 0;
1572
1573                 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1574                         int sf;
1575
1576                         if ((done_ccb->ccb_h.ccb_state & CD_CCB_RETRY_UA) != 0)
1577                                 sf = SF_RETRY_UA;
1578                         else
1579                                 sf = 0;
1580
1581                         error = cderror(done_ccb, CAM_RETRY_SELTO, sf);
1582                         if (error == ERESTART) {
1583                                 /*
1584                                  * A retry was scheuled, so
1585                                  * just return.
1586                                  */
1587                                 return;
1588                         }
1589                 }
1590
1591                 if (error != 0) {
1592                         xpt_print(periph->path,
1593                             "cddone: got error %#x back\n", error);
1594                         bioq_flush(&softc->bio_queue, NULL, EIO);
1595                         bp->bio_resid = bp->bio_bcount;
1596                         bp->bio_error = error;
1597                         bp->bio_flags |= BIO_ERROR;
1598                         if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
1599                                 cam_release_devq(done_ccb->ccb_h.path,
1600                                          /*relsim_flags*/0,
1601                                          /*reduction*/0,
1602                                          /*timeout*/0,
1603                                          /*getcount_only*/0);
1604
1605                 } else {
1606                         bp->bio_resid = csio->resid;
1607                         bp->bio_error = 0;
1608                         if (bp->bio_resid != 0) {
1609                                 /*
1610                                  * Short transfer ???
1611                                  * XXX: not sure this is correct for partial
1612                                  * transfers at EOM
1613                                  */
1614                                 bp->bio_flags |= BIO_ERROR;
1615                         }
1616                 }
1617
1618                 LIST_REMOVE(&done_ccb->ccb_h, periph_links.le);
1619                 softc->outstanding_cmds--;
1620
1621                 if (softc->flags & CD_FLAG_CHANGER)
1622                         cdchangerschedule(softc);
1623
1624                 biofinish(bp, NULL, 0);
1625                 break;
1626         }
1627         case CD_CCB_PROBE:
1628         {
1629                 struct     scsi_read_capacity_data *rdcap;
1630                 char       announce_buf[120]; /*
1631                                                * Currently (9/30/97) the
1632                                                * longest possible announce
1633                                                * buffer is 108 bytes, for the
1634                                                * first error case below.
1635                                                * That is 39 bytes for the
1636                                                * basic string, 16 bytes for the
1637                                                * biggest sense key (hardware
1638                                                * error), 52 bytes for the
1639                                                * text of the largest sense
1640                                                * qualifier valid for a CDROM,
1641                                                * (0x72, 0x03 or 0x04,
1642                                                * 0x03), and one byte for the
1643                                                * null terminating character.
1644                                                * To allow for longer strings,
1645                                                * the announce buffer is 120
1646                                                * bytes.
1647                                                */
1648                 struct     cd_params *cdp;
1649
1650                 cdp = &softc->params;
1651
1652                 rdcap = (struct scsi_read_capacity_data *)csio->data_ptr;
1653
1654                 cdp->disksize = scsi_4btoul (rdcap->addr) + 1;
1655                 cdp->blksize = scsi_4btoul (rdcap->length);
1656
1657                 if ((csio->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP) {
1658
1659                         snprintf(announce_buf, sizeof(announce_buf),
1660                                 "cd present [%lu x %lu byte records]",
1661                                 cdp->disksize, (u_long)cdp->blksize);
1662
1663                 } else {
1664                         int     error;
1665                         /*
1666                          * Retry any UNIT ATTENTION type errors.  They
1667                          * are expected at boot.
1668                          */
1669                         error = cderror(done_ccb, CAM_RETRY_SELTO,
1670                                         SF_RETRY_UA | SF_NO_PRINT);
1671                         if (error == ERESTART) {
1672                                 /*
1673                                  * A retry was scheuled, so
1674                                  * just return.
1675                                  */
1676                                 return;
1677                         } else if (error != 0) {
1678
1679                                 struct scsi_sense_data *sense;
1680                                 int asc, ascq;
1681                                 int sense_key, error_code;
1682                                 int have_sense;
1683                                 cam_status status;
1684                                 struct ccb_getdev cgd;
1685
1686                                 /* Don't wedge this device's queue */
1687                                 if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
1688                                         cam_release_devq(done_ccb->ccb_h.path,
1689                                                  /*relsim_flags*/0,
1690                                                  /*reduction*/0,
1691                                                  /*timeout*/0,
1692                                                  /*getcount_only*/0);
1693
1694                                 status = done_ccb->ccb_h.status;
1695
1696                                 xpt_setup_ccb(&cgd.ccb_h,
1697                                               done_ccb->ccb_h.path,
1698                                               CAM_PRIORITY_NORMAL);
1699                                 cgd.ccb_h.func_code = XPT_GDEV_TYPE;
1700                                 xpt_action((union ccb *)&cgd);
1701
1702                                 if (((csio->ccb_h.flags & CAM_SENSE_PHYS) != 0)
1703                                  || ((csio->ccb_h.flags & CAM_SENSE_PTR) != 0)
1704                                  || ((status & CAM_AUTOSNS_VALID) == 0))
1705                                         have_sense = FALSE;
1706                                 else
1707                                         have_sense = TRUE;
1708
1709                                 if (have_sense) {
1710                                         sense = &csio->sense_data;
1711                                         scsi_extract_sense(sense, &error_code,
1712                                                            &sense_key,
1713                                                            &asc, &ascq);
1714                                 }
1715                                 /*
1716                                  * Attach to anything that claims to be a
1717                                  * CDROM or WORM device, as long as it
1718                                  * doesn't return a "Logical unit not
1719                                  * supported" (0x25) error.
1720                                  */
1721                                 if ((have_sense) && (asc != 0x25)
1722                                  && (error_code == SSD_CURRENT_ERROR)) {
1723                                         const char *sense_key_desc;
1724                                         const char *asc_desc;
1725
1726                                         scsi_sense_desc(sense_key, asc, ascq,
1727                                                         &cgd.inq_data,
1728                                                         &sense_key_desc,
1729                                                         &asc_desc);
1730                                         snprintf(announce_buf,
1731                                             sizeof(announce_buf),
1732                                                 "Attempt to query device "
1733                                                 "size failed: %s, %s",
1734                                                 sense_key_desc,
1735                                                 asc_desc);
1736                                 } else if ((have_sense == 0)
1737                                       && ((status & CAM_STATUS_MASK) ==
1738                                            CAM_SCSI_STATUS_ERROR)
1739                                       && (csio->scsi_status ==
1740                                           SCSI_STATUS_BUSY)) {
1741                                         snprintf(announce_buf,
1742                                             sizeof(announce_buf),
1743                                             "Attempt to query device "
1744                                             "size failed: SCSI Status: %s",
1745                                             scsi_status_string(csio));
1746                                 } else if (SID_TYPE(&cgd.inq_data) == T_CDROM) {
1747                                         /*
1748                                          * We only print out an error for
1749                                          * CDROM type devices.  For WORM
1750                                          * devices, we don't print out an
1751                                          * error since a few WORM devices
1752                                          * don't support CDROM commands.
1753                                          * If we have sense information, go
1754                                          * ahead and print it out.
1755                                          * Otherwise, just say that we
1756                                          * couldn't attach.
1757                                          */
1758
1759                                         /*
1760                                          * Just print out the error, not
1761                                          * the full probe message, when we
1762                                          * don't attach.
1763                                          */
1764                                         if (have_sense)
1765                                                 scsi_sense_print(
1766                                                         &done_ccb->csio);
1767                                         else {
1768                                                 xpt_print(periph->path,
1769                                                     "got CAM status %#x\n",
1770                                                     done_ccb->ccb_h.status);
1771                                         }
1772                                         xpt_print(periph->path, "fatal error, "
1773                                             "failed to attach to device\n");
1774                                         /*
1775                                          * Invalidate this peripheral.
1776                                          */
1777                                         cam_periph_invalidate(periph);
1778
1779                                         announce_buf[0] = '\0';
1780                                 } else {
1781
1782                                         /*
1783                                          * Invalidate this peripheral.
1784                                          */
1785                                         cam_periph_invalidate(periph);
1786                                         announce_buf[0] = '\0';
1787                                 }
1788                         }
1789                 }
1790                 free(rdcap, M_SCSICD);
1791                 if (announce_buf[0] != '\0') {
1792                         xpt_announce_periph(periph, announce_buf);
1793                         xpt_announce_quirks(periph, softc->quirks,
1794                             CD_Q_BIT_STRING);
1795                         if (softc->flags & CD_FLAG_CHANGER)
1796                                 cdchangerschedule(softc);
1797                         /*
1798                          * Create our sysctl variables, now that we know
1799                          * we have successfully attached.
1800                          */
1801                         taskqueue_enqueue(taskqueue_thread,&softc->sysctl_task);
1802                 }
1803                 softc->state = CD_STATE_NORMAL;
1804                 /*
1805                  * Since our peripheral may be invalidated by an error
1806                  * above or an external event, we must release our CCB
1807                  * before releasing the probe lock on the peripheral.
1808                  * The peripheral will only go away once the last lock
1809                  * is removed, and we need it around for the CCB release
1810                  * operation.
1811                  */
1812                 xpt_release_ccb(done_ccb);
1813                 cam_periph_unhold(periph);
1814                 return;
1815         }
1816         case CD_CCB_WAITING:
1817         {
1818                 /* Caller will release the CCB */
1819                 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE,
1820                           ("trying to wakeup ccbwait\n"));
1821
1822                 wakeup(&done_ccb->ccb_h.cbfcnp);
1823                 return;
1824         }
1825         default:
1826                 break;
1827         }
1828         xpt_release_ccb(done_ccb);
1829 }
1830
1831 static union cd_pages *
1832 cdgetpage(struct cd_mode_params *mode_params)
1833 {
1834         union cd_pages *page;
1835
1836         if (mode_params->cdb_size == 10)
1837                 page = (union cd_pages *)find_mode_page_10(
1838                         (struct scsi_mode_header_10 *)mode_params->mode_buf);
1839         else
1840                 page = (union cd_pages *)find_mode_page_6(
1841                         (struct scsi_mode_header_6 *)mode_params->mode_buf);
1842
1843         return (page);
1844 }
1845
1846 static int
1847 cdgetpagesize(int page_num)
1848 {
1849         int i;
1850
1851         for (i = 0; i < (sizeof(cd_page_size_table)/
1852              sizeof(cd_page_size_table[0])); i++) {
1853                 if (cd_page_size_table[i].page == page_num)
1854                         return (cd_page_size_table[i].page_size);
1855         }
1856
1857         return (-1);
1858 }
1859
1860 static int
1861 cdioctl(struct disk *dp, u_long cmd, void *addr, int flag, struct thread *td)
1862 {
1863
1864         struct  cam_periph *periph;
1865         struct  cd_softc *softc;
1866         int     nocopyout, error = 0;
1867
1868         periph = (struct cam_periph *)dp->d_drv1;
1869         if (periph == NULL)
1870                 return(ENXIO);
1871
1872         cam_periph_lock(periph);
1873
1874         softc = (struct cd_softc *)periph->softc;
1875
1876         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE,
1877             ("cdioctl(%#lx)\n", cmd));
1878
1879         if ((error = cam_periph_hold(periph, PRIBIO | PCATCH)) != 0) {
1880                 cam_periph_unlock(periph);
1881                 cam_periph_release(periph);
1882                 return (error);
1883         }
1884
1885         /*
1886          * If we don't have media loaded, check for it.  If still don't
1887          * have media loaded, we can only do a load or eject.
1888          *
1889          * We only care whether media is loaded if this is a cd-specific ioctl
1890          * (thus the IOCGROUP check below).  Note that this will break if
1891          * anyone adds any ioctls into the switch statement below that don't
1892          * have their ioctl group set to 'c'.
1893          */
1894         if (((softc->flags & CD_FLAG_VALID_MEDIA) == 0)
1895          && ((cmd != CDIOCCLOSE)
1896           && (cmd != CDIOCEJECT))
1897          && (IOCGROUP(cmd) == 'c')) {
1898                 error = cdcheckmedia(periph);
1899                 if (error != 0) {
1900                         cam_periph_unhold(periph);
1901                         cam_periph_unlock(periph);
1902                         return (error);
1903                 }
1904         }
1905         /*
1906          * Drop the lock here so later mallocs can use WAITOK.  The periph
1907          * is essentially locked still with the cam_periph_hold call above.
1908          */
1909         cam_periph_unlock(periph);
1910
1911         nocopyout = 0;
1912         switch (cmd) {
1913
1914         case CDIOCPLAYTRACKS:
1915                 {
1916                         struct ioc_play_track *args
1917                             = (struct ioc_play_track *) addr;
1918                         struct cd_mode_params params;
1919                         union cd_pages *page;
1920
1921                         params.alloc_len = sizeof(union cd_mode_data_6_10);
1922                         params.mode_buf = malloc(params.alloc_len, M_SCSICD,
1923                                                  M_WAITOK | M_ZERO);
1924
1925                         cam_periph_lock(periph);
1926                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
1927                                   ("trying to do CDIOCPLAYTRACKS\n"));
1928
1929                         error = cdgetmode(periph, &params, AUDIO_PAGE);
1930                         if (error) {
1931                                 free(params.mode_buf, M_SCSICD);
1932                                 cam_periph_unlock(periph);
1933                                 break;
1934                         }
1935                         page = cdgetpage(&params);
1936
1937                         page->audio.flags &= ~CD_PA_SOTC;
1938                         page->audio.flags |= CD_PA_IMMED;
1939                         error = cdsetmode(periph, &params);
1940                         free(params.mode_buf, M_SCSICD);
1941                         if (error) {
1942                                 cam_periph_unlock(periph);
1943                                 break;
1944                         }
1945
1946                         /*
1947                          * This was originally implemented with the PLAY
1948                          * AUDIO TRACK INDEX command, but that command was
1949                          * deprecated after SCSI-2.  Most (all?) SCSI CDROM
1950                          * drives support it but ATAPI and ATAPI-derivative
1951                          * drives don't seem to support it.  So we keep a
1952                          * cache of the table of contents and translate
1953                          * track numbers to MSF format.
1954                          */
1955                         if (softc->flags & CD_FLAG_VALID_TOC) {
1956                                 union msf_lba *sentry, *eentry;
1957                                 int st, et;
1958
1959                                 if (args->end_track <
1960                                     softc->toc.header.ending_track + 1)
1961                                         args->end_track++;
1962                                 if (args->end_track >
1963                                     softc->toc.header.ending_track + 1)
1964                                         args->end_track =
1965                                             softc->toc.header.ending_track + 1;
1966                                 st = args->start_track -
1967                                         softc->toc.header.starting_track;
1968                                 et = args->end_track -
1969                                         softc->toc.header.starting_track;
1970                                 if ((st < 0)
1971                                  || (et < 0)
1972                                  || (st > (softc->toc.header.ending_track -
1973                                      softc->toc.header.starting_track))) {
1974                                         error = EINVAL;
1975                                         cam_periph_unlock(periph);
1976                                         break;
1977                                 }
1978                                 sentry = &softc->toc.entries[st].addr;
1979                                 eentry = &softc->toc.entries[et].addr;
1980                                 error = cdplaymsf(periph,
1981                                                   sentry->msf.minute,
1982                                                   sentry->msf.second,
1983                                                   sentry->msf.frame,
1984                                                   eentry->msf.minute,
1985                                                   eentry->msf.second,
1986                                                   eentry->msf.frame);
1987                         } else {
1988                                 /*
1989                                  * If we don't have a valid TOC, try the
1990                                  * play track index command.  It is part of
1991                                  * the SCSI-2 spec, but was removed in the
1992                                  * MMC specs.  ATAPI and ATAPI-derived
1993                                  * drives don't support it.
1994                                  */
1995                                 if (softc->quirks & CD_Q_BCD_TRACKS) {
1996                                         args->start_track =
1997                                                 bin2bcd(args->start_track);
1998                                         args->end_track =
1999                                                 bin2bcd(args->end_track);
2000                                 }
2001                                 error = cdplaytracks(periph,
2002                                                      args->start_track,
2003                                                      args->start_index,
2004                                                      args->end_track,
2005                                                      args->end_index);
2006                         }
2007                         cam_periph_unlock(periph);
2008                 }
2009                 break;
2010         case CDIOCPLAYMSF:
2011                 {
2012                         struct ioc_play_msf *args
2013                                 = (struct ioc_play_msf *) addr;
2014                         struct cd_mode_params params;
2015                         union cd_pages *page;
2016
2017                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2018                         params.mode_buf = malloc(params.alloc_len, M_SCSICD,
2019                                                  M_WAITOK | M_ZERO);
2020
2021                         cam_periph_lock(periph);
2022                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2023                                   ("trying to do CDIOCPLAYMSF\n"));
2024
2025                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2026                         if (error) {
2027                                 free(params.mode_buf, M_SCSICD);
2028                                 cam_periph_unlock(periph);
2029                                 break;
2030                         }
2031                         page = cdgetpage(&params);
2032
2033                         page->audio.flags &= ~CD_PA_SOTC;
2034                         page->audio.flags |= CD_PA_IMMED;
2035                         error = cdsetmode(periph, &params);
2036                         free(params.mode_buf, M_SCSICD);
2037                         if (error) {
2038                                 cam_periph_unlock(periph);
2039                                 break;
2040                         }
2041                         error = cdplaymsf(periph,
2042                                           args->start_m,
2043                                           args->start_s,
2044                                           args->start_f,
2045                                           args->end_m,
2046                                           args->end_s,
2047                                           args->end_f);
2048                         cam_periph_unlock(periph);
2049                 }
2050                 break;
2051         case CDIOCPLAYBLOCKS:
2052                 {
2053                         struct ioc_play_blocks *args
2054                                 = (struct ioc_play_blocks *) addr;
2055                         struct cd_mode_params params;
2056                         union cd_pages *page;
2057
2058                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2059                         params.mode_buf = malloc(params.alloc_len, M_SCSICD,
2060                                                  M_WAITOK | M_ZERO);
2061
2062                         cam_periph_lock(periph);
2063                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2064                                   ("trying to do CDIOCPLAYBLOCKS\n"));
2065
2066
2067                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2068                         if (error) {
2069                                 free(params.mode_buf, M_SCSICD);
2070                                 cam_periph_unlock(periph);
2071                                 break;
2072                         }
2073                         page = cdgetpage(&params);
2074
2075                         page->audio.flags &= ~CD_PA_SOTC;
2076                         page->audio.flags |= CD_PA_IMMED;
2077                         error = cdsetmode(periph, &params);
2078                         free(params.mode_buf, M_SCSICD);
2079                         if (error) {
2080                                 cam_periph_unlock(periph);
2081                                 break;
2082                         }
2083                         error = cdplay(periph, args->blk, args->len);
2084                         cam_periph_unlock(periph);
2085                 }
2086                 break;
2087         case CDIOCREADSUBCHANNEL_SYSSPACE:
2088                 nocopyout = 1;
2089                 /* Fallthrough */
2090         case CDIOCREADSUBCHANNEL:
2091                 {
2092                         struct ioc_read_subchannel *args
2093                                 = (struct ioc_read_subchannel *) addr;
2094                         struct cd_sub_channel_info *data;
2095                         u_int32_t len = args->data_len;
2096
2097                         data = malloc(sizeof(struct cd_sub_channel_info),
2098                                       M_SCSICD, M_WAITOK | M_ZERO);
2099
2100                         cam_periph_lock(periph);
2101                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2102                                   ("trying to do CDIOCREADSUBCHANNEL\n"));
2103
2104                         if ((len > sizeof(struct cd_sub_channel_info)) ||
2105                             (len < sizeof(struct cd_sub_channel_header))) {
2106                                 printf(
2107                                         "scsi_cd: cdioctl: "
2108                                         "cdioreadsubchannel: error, len=%d\n",
2109                                         len);
2110                                 error = EINVAL;
2111                                 free(data, M_SCSICD);
2112                                 cam_periph_unlock(periph);
2113                                 break;
2114                         }
2115
2116                         if (softc->quirks & CD_Q_BCD_TRACKS)
2117                                 args->track = bin2bcd(args->track);
2118
2119                         error = cdreadsubchannel(periph, args->address_format,
2120                                 args->data_format, args->track, data, len);
2121
2122                         if (error) {
2123                                 free(data, M_SCSICD);
2124                                 cam_periph_unlock(periph);
2125                                 break;
2126                         }
2127                         if (softc->quirks & CD_Q_BCD_TRACKS)
2128                                 data->what.track_info.track_number =
2129                                     bcd2bin(data->what.track_info.track_number);
2130                         len = min(len, ((data->header.data_len[0] << 8) +
2131                                 data->header.data_len[1] +
2132                                 sizeof(struct cd_sub_channel_header)));
2133                         cam_periph_unlock(periph);
2134                         if (nocopyout == 0) {
2135                                 if (copyout(data, args->data, len) != 0) {
2136                                         error = EFAULT;
2137                                 }
2138                         } else {
2139                                 bcopy(data, args->data, len);
2140                         }
2141                         free(data, M_SCSICD);
2142                 }
2143                 break;
2144
2145         case CDIOREADTOCHEADER:
2146                 {
2147                         struct ioc_toc_header *th;
2148
2149                         th = malloc(sizeof(struct ioc_toc_header), M_SCSICD,
2150                                     M_WAITOK | M_ZERO);
2151
2152                         cam_periph_lock(periph);
2153                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2154                                   ("trying to do CDIOREADTOCHEADER\n"));
2155
2156                         error = cdreadtoc(periph, 0, 0, (u_int8_t *)th,
2157                                           sizeof (*th), /*sense_flags*/SF_NO_PRINT);
2158                         if (error) {
2159                                 free(th, M_SCSICD);
2160                                 cam_periph_unlock(periph);
2161                                 break;
2162                         }
2163                         if (softc->quirks & CD_Q_BCD_TRACKS) {
2164                                 /* we are going to have to convert the BCD
2165                                  * encoding on the cd to what is expected
2166                                  */
2167                                 th->starting_track =
2168                                         bcd2bin(th->starting_track);
2169                                 th->ending_track = bcd2bin(th->ending_track);
2170                         }
2171                         th->len = ntohs(th->len);
2172                         bcopy(th, addr, sizeof(*th));
2173                         free(th, M_SCSICD);
2174                         cam_periph_unlock(periph);
2175                 }
2176                 break;
2177         case CDIOREADTOCENTRYS:
2178                 {
2179                         struct cd_tocdata *data;
2180                         struct cd_toc_single *lead;
2181                         struct ioc_read_toc_entry *te =
2182                                 (struct ioc_read_toc_entry *) addr;
2183                         struct ioc_toc_header *th;
2184                         u_int32_t len, readlen, idx, num;
2185                         u_int32_t starting_track = te->starting_track;
2186
2187                         data = malloc(sizeof(*data), M_SCSICD, M_WAITOK | M_ZERO);
2188                         lead = malloc(sizeof(*lead), M_SCSICD, M_WAITOK | M_ZERO);
2189
2190                         cam_periph_lock(periph);
2191                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2192                                   ("trying to do CDIOREADTOCENTRYS\n"));
2193
2194                         if (te->data_len < sizeof(struct cd_toc_entry)
2195                          || (te->data_len % sizeof(struct cd_toc_entry)) != 0
2196                          || (te->address_format != CD_MSF_FORMAT
2197                           && te->address_format != CD_LBA_FORMAT)) {
2198                                 error = EINVAL;
2199                                 printf("scsi_cd: error in readtocentries, "
2200                                        "returning EINVAL\n");
2201                                 free(data, M_SCSICD);
2202                                 free(lead, M_SCSICD);
2203                                 cam_periph_unlock(periph);
2204                                 break;
2205                         }
2206
2207                         th = &data->header;
2208                         error = cdreadtoc(periph, 0, 0, (u_int8_t *)th,
2209                                           sizeof (*th), /*sense_flags*/0);
2210                         if (error) {
2211                                 free(data, M_SCSICD);
2212                                 free(lead, M_SCSICD);
2213                                 cam_periph_unlock(periph);
2214                                 break;
2215                         }
2216
2217                         if (softc->quirks & CD_Q_BCD_TRACKS) {
2218                                 /* we are going to have to convert the BCD
2219                                  * encoding on the cd to what is expected
2220                                  */
2221                                 th->starting_track =
2222                                     bcd2bin(th->starting_track);
2223                                 th->ending_track = bcd2bin(th->ending_track);
2224                         }
2225
2226                         if (starting_track == 0)
2227                                 starting_track = th->starting_track;
2228                         else if (starting_track == LEADOUT)
2229                                 starting_track = th->ending_track + 1;
2230                         else if (starting_track < th->starting_track ||
2231                                  starting_track > th->ending_track + 1) {
2232                                 printf("scsi_cd: error in readtocentries, "
2233                                        "returning EINVAL\n");
2234                                 free(data, M_SCSICD);
2235                                 free(lead, M_SCSICD);
2236                                 cam_periph_unlock(periph);
2237                                 error = EINVAL;
2238                                 break;
2239                         }
2240
2241                         /* calculate reading length without leadout entry */
2242                         readlen = (th->ending_track - starting_track + 1) *
2243                                   sizeof(struct cd_toc_entry);
2244
2245                         /* and with leadout entry */
2246                         len = readlen + sizeof(struct cd_toc_entry);
2247                         if (te->data_len < len) {
2248                                 len = te->data_len;
2249                                 if (readlen > len)
2250                                         readlen = len;
2251                         }
2252                         if (len > sizeof(data->entries)) {
2253                                 printf("scsi_cd: error in readtocentries, "
2254                                        "returning EINVAL\n");
2255                                 error = EINVAL;
2256                                 free(data, M_SCSICD);
2257                                 free(lead, M_SCSICD);
2258                                 cam_periph_unlock(periph);
2259                                 break;
2260                         }
2261                         num = len / sizeof(struct cd_toc_entry);
2262
2263                         if (readlen > 0) {
2264                                 error = cdreadtoc(periph, te->address_format,
2265                                                   starting_track,
2266                                                   (u_int8_t *)data,
2267                                                   readlen + sizeof (*th),
2268                                                   /*sense_flags*/0);
2269                                 if (error) {
2270                                         free(data, M_SCSICD);
2271                                         free(lead, M_SCSICD);
2272                                         cam_periph_unlock(periph);
2273                                         break;
2274                                 }
2275                         }
2276
2277                         /* make leadout entry if needed */
2278                         idx = starting_track + num - 1;
2279                         if (softc->quirks & CD_Q_BCD_TRACKS)
2280                                 th->ending_track = bcd2bin(th->ending_track);
2281                         if (idx == th->ending_track + 1) {
2282                                 error = cdreadtoc(periph, te->address_format,
2283                                                   LEADOUT, (u_int8_t *)lead,
2284                                                   sizeof(*lead),
2285                                                   /*sense_flags*/0);
2286                                 if (error) {
2287                                         free(data, M_SCSICD);
2288                                         free(lead, M_SCSICD);
2289                                         cam_periph_unlock(periph);
2290                                         break;
2291                                 }
2292                                 data->entries[idx - starting_track] =
2293                                         lead->entry;
2294                         }
2295                         if (softc->quirks & CD_Q_BCD_TRACKS) {
2296                                 for (idx = 0; idx < num - 1; idx++) {
2297                                         data->entries[idx].track =
2298                                             bcd2bin(data->entries[idx].track);
2299                                 }
2300                         }
2301
2302                         cam_periph_unlock(periph);
2303                         error = copyout(data->entries, te->data, len);
2304                         free(data, M_SCSICD);
2305                         free(lead, M_SCSICD);
2306                 }
2307                 break;
2308         case CDIOREADTOCENTRY:
2309                 {
2310                         struct cd_toc_single *data;
2311                         struct ioc_read_toc_single_entry *te =
2312                                 (struct ioc_read_toc_single_entry *) addr;
2313                         struct ioc_toc_header *th;
2314                         u_int32_t track;
2315
2316                         data = malloc(sizeof(*data), M_SCSICD, M_WAITOK | M_ZERO);
2317
2318                         cam_periph_lock(periph);
2319                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2320                                   ("trying to do CDIOREADTOCENTRY\n"));
2321
2322                         if (te->address_format != CD_MSF_FORMAT
2323                             && te->address_format != CD_LBA_FORMAT) {
2324                                 printf("error in readtocentry, "
2325                                        " returning EINVAL\n");
2326                                 free(data, M_SCSICD);
2327                                 error = EINVAL;
2328                                 cam_periph_unlock(periph);
2329                                 break;
2330                         }
2331
2332                         th = &data->header;
2333                         error = cdreadtoc(periph, 0, 0, (u_int8_t *)th,
2334                                           sizeof (*th), /*sense_flags*/0);
2335                         if (error) {
2336                                 free(data, M_SCSICD);
2337                                 cam_periph_unlock(periph);
2338                                 break;
2339                         }
2340
2341                         if (softc->quirks & CD_Q_BCD_TRACKS) {
2342                                 /* we are going to have to convert the BCD
2343                                  * encoding on the cd to what is expected
2344                                  */
2345                                 th->starting_track =
2346                                     bcd2bin(th->starting_track);
2347                                 th->ending_track = bcd2bin(th->ending_track);
2348                         }
2349                         track = te->track;
2350                         if (track == 0)
2351                                 track = th->starting_track;
2352                         else if (track == LEADOUT)
2353                                 /* OK */;
2354                         else if (track < th->starting_track ||
2355                                  track > th->ending_track + 1) {
2356                                 printf("error in readtocentry, "
2357                                        " returning EINVAL\n");
2358                                 free(data, M_SCSICD);
2359                                 error = EINVAL;
2360                                 cam_periph_unlock(periph);
2361                                 break;
2362                         }
2363
2364                         error = cdreadtoc(periph, te->address_format, track,
2365                                           (u_int8_t *)data, sizeof(*data),
2366                                           /*sense_flags*/0);
2367                         if (error) {
2368                                 free(data, M_SCSICD);
2369                                 cam_periph_unlock(periph);
2370                                 break;
2371                         }
2372
2373                         if (softc->quirks & CD_Q_BCD_TRACKS)
2374                                 data->entry.track = bcd2bin(data->entry.track);
2375                         bcopy(&data->entry, &te->entry,
2376                               sizeof(struct cd_toc_entry));
2377                         free(data, M_SCSICD);
2378                         cam_periph_unlock(periph);
2379                 }
2380                 break;
2381         case CDIOCSETPATCH:
2382                 {
2383                         struct ioc_patch *arg = (struct ioc_patch *)addr;
2384                         struct cd_mode_params params;
2385                         union cd_pages *page;
2386
2387                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2388                         params.mode_buf = malloc(params.alloc_len, M_SCSICD,
2389                                                  M_WAITOK | M_ZERO);
2390
2391                         cam_periph_lock(periph);
2392                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2393                                   ("trying to do CDIOCSETPATCH\n"));
2394
2395                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2396                         if (error) {
2397                                 free(params.mode_buf, M_SCSICD);
2398                                 cam_periph_unlock(periph);
2399                                 break;
2400                         }
2401                         page = cdgetpage(&params);
2402
2403                         page->audio.port[LEFT_PORT].channels =
2404                                 arg->patch[0];
2405                         page->audio.port[RIGHT_PORT].channels =
2406                                 arg->patch[1];
2407                         page->audio.port[2].channels = arg->patch[2];
2408                         page->audio.port[3].channels = arg->patch[3];
2409                         error = cdsetmode(periph, &params);
2410                         free(params.mode_buf, M_SCSICD);
2411                         cam_periph_unlock(periph);
2412                 }
2413                 break;
2414         case CDIOCGETVOL:
2415                 {
2416                         struct ioc_vol *arg = (struct ioc_vol *) addr;
2417                         struct cd_mode_params params;
2418                         union cd_pages *page;
2419
2420                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2421                         params.mode_buf = malloc(params.alloc_len, M_SCSICD,
2422                                                  M_WAITOK | M_ZERO);
2423
2424                         cam_periph_lock(periph);
2425                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2426                                   ("trying to do CDIOCGETVOL\n"));
2427
2428                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2429                         if (error) {
2430                                 free(params.mode_buf, M_SCSICD);
2431                                 cam_periph_unlock(periph);
2432                                 break;
2433                         }
2434                         page = cdgetpage(&params);
2435
2436                         arg->vol[LEFT_PORT] =
2437                                 page->audio.port[LEFT_PORT].volume;
2438                         arg->vol[RIGHT_PORT] =
2439                                 page->audio.port[RIGHT_PORT].volume;
2440                         arg->vol[2] = page->audio.port[2].volume;
2441                         arg->vol[3] = page->audio.port[3].volume;
2442                         free(params.mode_buf, M_SCSICD);
2443                         cam_periph_unlock(periph);
2444                 }
2445                 break;
2446         case CDIOCSETVOL:
2447                 {
2448                         struct ioc_vol *arg = (struct ioc_vol *) addr;
2449                         struct cd_mode_params params;
2450                         union cd_pages *page;
2451
2452                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2453                         params.mode_buf = malloc(params.alloc_len, M_SCSICD,
2454                                                  M_WAITOK | M_ZERO);
2455
2456                         cam_periph_lock(periph);
2457                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2458                                   ("trying to do CDIOCSETVOL\n"));
2459
2460                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2461                         if (error) {
2462                                 free(params.mode_buf, M_SCSICD);
2463                                 cam_periph_unlock(periph);
2464                                 break;
2465                         }
2466                         page = cdgetpage(&params);
2467
2468                         page->audio.port[LEFT_PORT].channels = CHANNEL_0;
2469                         page->audio.port[LEFT_PORT].volume =
2470                                 arg->vol[LEFT_PORT];
2471                         page->audio.port[RIGHT_PORT].channels = CHANNEL_1;
2472                         page->audio.port[RIGHT_PORT].volume =
2473                                 arg->vol[RIGHT_PORT];
2474                         page->audio.port[2].volume = arg->vol[2];
2475                         page->audio.port[3].volume = arg->vol[3];
2476                         error = cdsetmode(periph, &params);
2477                         cam_periph_unlock(periph);
2478                         free(params.mode_buf, M_SCSICD);
2479                 }
2480                 break;
2481         case CDIOCSETMONO:
2482                 {
2483                         struct cd_mode_params params;
2484                         union cd_pages *page;
2485
2486                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2487                         params.mode_buf = malloc(params.alloc_len, M_SCSICD,
2488                                                  M_WAITOK | M_ZERO);
2489
2490                         cam_periph_lock(periph);
2491                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2492                                   ("trying to do CDIOCSETMONO\n"));
2493
2494                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2495                         if (error) {
2496                                 free(params.mode_buf, M_SCSICD);
2497                                 cam_periph_unlock(periph);
2498                                 break;
2499                         }
2500                         page = cdgetpage(&params);
2501
2502                         page->audio.port[LEFT_PORT].channels =
2503                                 LEFT_CHANNEL | RIGHT_CHANNEL;
2504                         page->audio.port[RIGHT_PORT].channels =
2505                                 LEFT_CHANNEL | RIGHT_CHANNEL;
2506                         page->audio.port[2].channels = 0;
2507                         page->audio.port[3].channels = 0;
2508                         error = cdsetmode(periph, &params);
2509                         cam_periph_unlock(periph);
2510                         free(params.mode_buf, M_SCSICD);
2511                 }
2512                 break;
2513         case CDIOCSETSTEREO:
2514                 {
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 CDIOCSETSTEREO\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                         page->audio.port[LEFT_PORT].channels =
2535                                 LEFT_CHANNEL;
2536                         page->audio.port[RIGHT_PORT].channels =
2537                                 RIGHT_CHANNEL;
2538                         page->audio.port[2].channels = 0;
2539                         page->audio.port[3].channels = 0;
2540                         error = cdsetmode(periph, &params);
2541                         free(params.mode_buf, M_SCSICD);
2542                         cam_periph_unlock(periph);
2543                 }
2544                 break;
2545         case CDIOCSETMUTE:
2546                 {
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 CDIOCSETMUTE\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 = 0;
2567                         page->audio.port[RIGHT_PORT].channels = 0;
2568                         page->audio.port[2].channels = 0;
2569                         page->audio.port[3].channels = 0;
2570                         error = cdsetmode(periph, &params);
2571                         free(params.mode_buf, M_SCSICD);
2572                         cam_periph_unlock(periph);
2573                 }
2574                 break;
2575         case CDIOCSETLEFT:
2576                 {
2577                         struct cd_mode_params params;
2578                         union cd_pages *page;
2579
2580                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2581                         params.mode_buf = malloc(params.alloc_len, M_SCSICD,
2582                                                  M_WAITOK | M_ZERO);
2583
2584                         cam_periph_lock(periph);
2585                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2586                                   ("trying to do CDIOCSETLEFT\n"));
2587
2588                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2589                         if (error) {
2590                                 free(params.mode_buf, M_SCSICD);
2591                                 cam_periph_unlock(periph);
2592                                 break;
2593                         }
2594                         page = cdgetpage(&params);
2595
2596                         page->audio.port[LEFT_PORT].channels = LEFT_CHANNEL;
2597                         page->audio.port[RIGHT_PORT].channels = LEFT_CHANNEL;
2598                         page->audio.port[2].channels = 0;
2599                         page->audio.port[3].channels = 0;
2600                         error = cdsetmode(periph, &params);
2601                         free(params.mode_buf, M_SCSICD);
2602                         cam_periph_unlock(periph);
2603                 }
2604                 break;
2605         case CDIOCSETRIGHT:
2606                 {
2607                         struct cd_mode_params params;
2608                         union cd_pages *page;
2609
2610                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2611                         params.mode_buf = malloc(params.alloc_len, M_SCSICD,
2612                                                  M_WAITOK | M_ZERO);
2613
2614                         cam_periph_lock(periph);
2615                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2616                                   ("trying to do CDIOCSETRIGHT\n"));
2617
2618                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2619                         if (error) {
2620                                 free(params.mode_buf, M_SCSICD);
2621                                 cam_periph_unlock(periph);
2622                                 break;
2623                         }
2624                         page = cdgetpage(&params);
2625
2626                         page->audio.port[LEFT_PORT].channels = RIGHT_CHANNEL;
2627                         page->audio.port[RIGHT_PORT].channels = RIGHT_CHANNEL;
2628                         page->audio.port[2].channels = 0;
2629                         page->audio.port[3].channels = 0;
2630                         error = cdsetmode(periph, &params);
2631                         free(params.mode_buf, M_SCSICD);
2632                         cam_periph_unlock(periph);
2633                 }
2634                 break;
2635         case CDIOCRESUME:
2636                 cam_periph_lock(periph);
2637                 error = cdpause(periph, 1);
2638                 cam_periph_unlock(periph);
2639                 break;
2640         case CDIOCPAUSE:
2641                 cam_periph_lock(periph);
2642                 error = cdpause(periph, 0);
2643                 cam_periph_unlock(periph);
2644                 break;
2645         case CDIOCSTART:
2646                 cam_periph_lock(periph);
2647                 error = cdstartunit(periph, 0);
2648                 cam_periph_unlock(periph);
2649                 break;
2650         case CDIOCCLOSE:
2651                 cam_periph_lock(periph);
2652                 error = cdstartunit(periph, 1);
2653                 cam_periph_unlock(periph);
2654                 break;
2655         case CDIOCSTOP:
2656                 cam_periph_lock(periph);
2657                 error = cdstopunit(periph, 0);
2658                 cam_periph_unlock(periph);
2659                 break;
2660         case CDIOCEJECT:
2661                 cam_periph_lock(periph);
2662                 error = cdstopunit(periph, 1);
2663                 cam_periph_unlock(periph);
2664                 break;
2665         case CDIOCALLOW:
2666                 cam_periph_lock(periph);
2667                 cdprevent(periph, PR_ALLOW);
2668                 cam_periph_unlock(periph);
2669                 break;
2670         case CDIOCPREVENT:
2671                 cam_periph_lock(periph);
2672                 cdprevent(periph, PR_PREVENT);
2673                 cam_periph_unlock(periph);
2674                 break;
2675         case CDIOCSETDEBUG:
2676                 /* sc_link->flags |= (SDEV_DB1 | SDEV_DB2); */
2677                 error = ENOTTY;
2678                 break;
2679         case CDIOCCLRDEBUG:
2680                 /* sc_link->flags &= ~(SDEV_DB1 | SDEV_DB2); */
2681                 error = ENOTTY;
2682                 break;
2683         case CDIOCRESET:
2684                 /* return (cd_reset(periph)); */
2685                 error = ENOTTY;
2686                 break;
2687         case CDRIOCREADSPEED:
2688                 cam_periph_lock(periph);
2689                 error = cdsetspeed(periph, *(u_int32_t *)addr, CDR_MAX_SPEED);
2690                 cam_periph_unlock(periph);
2691                 break;
2692         case CDRIOCWRITESPEED:
2693                 cam_periph_lock(periph);
2694                 error = cdsetspeed(periph, CDR_MAX_SPEED, *(u_int32_t *)addr);
2695                 cam_periph_unlock(periph);
2696                 break;
2697         case CDRIOCGETBLOCKSIZE:
2698                 *(int *)addr = softc->params.blksize;
2699                 break;
2700         case CDRIOCSETBLOCKSIZE:
2701                 if (*(int *)addr <= 0) {
2702                         error = EINVAL;
2703                         break;
2704                 }
2705                 softc->disk->d_sectorsize = softc->params.blksize = *(int *)addr;
2706                 break;
2707         case DVDIOCSENDKEY:
2708         case DVDIOCREPORTKEY: {
2709                 struct dvd_authinfo *authinfo;
2710
2711                 authinfo = (struct dvd_authinfo *)addr;
2712
2713                 if (cmd == DVDIOCREPORTKEY)
2714                         error = cdreportkey(periph, authinfo);
2715                 else
2716                         error = cdsendkey(periph, authinfo);
2717                 break;
2718                 }
2719         case DVDIOCREADSTRUCTURE: {
2720                 struct dvd_struct *dvdstruct;
2721
2722                 dvdstruct = (struct dvd_struct *)addr;
2723
2724                 error = cdreaddvdstructure(periph, dvdstruct);
2725
2726                 break;
2727         }
2728         default:
2729                 cam_periph_lock(periph);
2730                 error = cam_periph_ioctl(periph, cmd, addr, cderror);
2731                 cam_periph_unlock(periph);
2732                 break;
2733         }
2734
2735         cam_periph_lock(periph);
2736         cam_periph_unhold(periph);
2737
2738         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("leaving cdioctl\n"));
2739         if (error && bootverbose) {
2740                 printf("scsi_cd.c::ioctl cmd=%08lx error=%d\n", cmd, error);
2741         }
2742         cam_periph_unlock(periph);
2743
2744         return (error);
2745 }
2746
2747 static void
2748 cdprevent(struct cam_periph *periph, int action)
2749 {
2750         union   ccb *ccb;
2751         struct  cd_softc *softc;
2752         int     error;
2753
2754         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("entering cdprevent\n"));
2755
2756         softc = (struct cd_softc *)periph->softc;
2757
2758         if (((action == PR_ALLOW)
2759           && (softc->flags & CD_FLAG_DISC_LOCKED) == 0)
2760          || ((action == PR_PREVENT)
2761           && (softc->flags & CD_FLAG_DISC_LOCKED) != 0)) {
2762                 return;
2763         }
2764
2765         ccb = cdgetccb(periph, CAM_PRIORITY_NORMAL);
2766
2767         scsi_prevent(&ccb->csio,
2768                      /*retries*/ cd_retry_count,
2769                      cddone,
2770                      MSG_SIMPLE_Q_TAG,
2771                      action,
2772                      SSD_FULL_SIZE,
2773                      /* timeout */60000);
2774
2775         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
2776                         /*sense_flags*/SF_RETRY_UA|SF_NO_PRINT);
2777
2778         xpt_release_ccb(ccb);
2779
2780         if (error == 0) {
2781                 if (action == PR_ALLOW)
2782                         softc->flags &= ~CD_FLAG_DISC_LOCKED;
2783                 else
2784                         softc->flags |= CD_FLAG_DISC_LOCKED;
2785         }
2786 }
2787
2788 /*
2789  * XXX: the disk media and sector size is only really able to change
2790  * XXX: while the device is closed.
2791  */
2792 static int
2793 cdcheckmedia(struct cam_periph *periph)
2794 {
2795         struct cd_softc *softc;
2796         struct ioc_toc_header *toch;
2797         struct cd_toc_single leadout;
2798         u_int32_t size, toclen;
2799         int error, num_entries, cdindex;
2800
2801         softc = (struct cd_softc *)periph->softc;
2802
2803         cdprevent(periph, PR_PREVENT);
2804         softc->disk->d_sectorsize = 2048;
2805         softc->disk->d_mediasize = 0;
2806
2807         /*
2808          * Get the disc size and block size.  If we can't get it, we don't
2809          * have media, most likely.
2810          */
2811         if ((error = cdsize(periph, &size)) != 0) {
2812                 softc->flags &= ~(CD_FLAG_VALID_MEDIA|CD_FLAG_VALID_TOC);
2813                 cdprevent(periph, PR_ALLOW);
2814                 return (error);
2815         } else {
2816                 softc->flags |= CD_FLAG_VALID_MEDIA;
2817                 softc->disk->d_sectorsize = softc->params.blksize;
2818                 softc->disk->d_mediasize =
2819                     (off_t)softc->params.blksize * softc->params.disksize;
2820         }
2821
2822         /*
2823          * Now we check the table of contents.  This (currently) is only
2824          * used for the CDIOCPLAYTRACKS ioctl.  It may be used later to do
2825          * things like present a separate entry in /dev for each track,
2826          * like that acd(4) driver does.
2827          */
2828         bzero(&softc->toc, sizeof(softc->toc));
2829         toch = &softc->toc.header;
2830         /*
2831          * We will get errors here for media that doesn't have a table of
2832          * contents.  According to the MMC-3 spec: "When a Read TOC/PMA/ATIP
2833          * command is presented for a DDCD/CD-R/RW media, where the first TOC
2834          * has not been recorded (no complete session) and the Format codes
2835          * 0000b, 0001b, or 0010b are specified, this command shall be rejected
2836          * with an INVALID FIELD IN CDB.  Devices that are not capable of
2837          * reading an incomplete session on DDC/CD-R/RW media shall report
2838          * CANNOT READ MEDIUM - INCOMPATIBLE FORMAT."
2839          *
2840          * So this isn't fatal if we can't read the table of contents, it
2841          * just means that the user won't be able to issue the play tracks
2842          * ioctl, and likely lots of other stuff won't work either.  They
2843          * need to burn the CD before we can do a whole lot with it.  So
2844          * we don't print anything here if we get an error back.
2845          */
2846         error = cdreadtoc(periph, 0, 0, (u_int8_t *)toch, sizeof(*toch),
2847                           SF_NO_PRINT);
2848         /*
2849          * Errors in reading the table of contents aren't fatal, we just
2850          * won't have a valid table of contents cached.
2851          */
2852         if (error != 0) {
2853                 error = 0;
2854                 bzero(&softc->toc, sizeof(softc->toc));
2855                 goto bailout;
2856         }
2857
2858         if (softc->quirks & CD_Q_BCD_TRACKS) {
2859                 toch->starting_track = bcd2bin(toch->starting_track);
2860                 toch->ending_track = bcd2bin(toch->ending_track);
2861         }
2862
2863         /* Number of TOC entries, plus leadout */
2864         num_entries = (toch->ending_track - toch->starting_track) + 2;
2865
2866         if (num_entries <= 0)
2867                 goto bailout;
2868
2869         toclen = num_entries * sizeof(struct cd_toc_entry);
2870
2871         error = cdreadtoc(periph, CD_MSF_FORMAT, toch->starting_track,
2872                           (u_int8_t *)&softc->toc, toclen + sizeof(*toch),
2873                           SF_NO_PRINT);
2874         if (error != 0) {
2875                 error = 0;
2876                 bzero(&softc->toc, sizeof(softc->toc));
2877                 goto bailout;
2878         }
2879
2880         if (softc->quirks & CD_Q_BCD_TRACKS) {
2881                 toch->starting_track = bcd2bin(toch->starting_track);
2882                 toch->ending_track = bcd2bin(toch->ending_track);
2883         }
2884         /*
2885          * XXX KDM is this necessary?  Probably only if the drive doesn't
2886          * return leadout information with the table of contents.
2887          */
2888         cdindex = toch->starting_track + num_entries -1;
2889         if (cdindex == toch->ending_track + 1) {
2890
2891                 error = cdreadtoc(periph, CD_MSF_FORMAT, LEADOUT,
2892                                   (u_int8_t *)&leadout, sizeof(leadout),
2893                                   SF_NO_PRINT);
2894                 if (error != 0) {
2895                         error = 0;
2896                         goto bailout;
2897                 }
2898                 softc->toc.entries[cdindex - toch->starting_track] =
2899                         leadout.entry;
2900         }
2901         if (softc->quirks & CD_Q_BCD_TRACKS) {
2902                 for (cdindex = 0; cdindex < num_entries - 1; cdindex++) {
2903                         softc->toc.entries[cdindex].track =
2904                                 bcd2bin(softc->toc.entries[cdindex].track);
2905                 }
2906         }
2907
2908         softc->flags |= CD_FLAG_VALID_TOC;
2909
2910         /* If the first track is audio, correct sector size. */
2911         if ((softc->toc.entries[0].control & 4) == 0) {
2912                 softc->disk->d_sectorsize = softc->params.blksize = 2352;
2913                 softc->disk->d_mediasize =
2914                     (off_t)softc->params.blksize * softc->params.disksize;
2915         }
2916
2917 bailout:
2918
2919         /*
2920          * We unconditionally (re)set the blocksize each time the
2921          * CD device is opened.  This is because the CD can change,
2922          * and therefore the blocksize might change.
2923          * XXX problems here if some slice or partition is still
2924          * open with the old size?
2925          */
2926         if ((softc->disk->d_devstat->flags & DEVSTAT_BS_UNAVAILABLE) != 0)
2927                 softc->disk->d_devstat->flags &= ~DEVSTAT_BS_UNAVAILABLE;
2928         softc->disk->d_devstat->block_size = softc->params.blksize;
2929
2930         return (error);
2931 }
2932
2933 static int
2934 cdsize(struct cam_periph *periph, u_int32_t *size)
2935 {
2936         struct cd_softc *softc;
2937         union ccb *ccb;
2938         struct scsi_read_capacity_data *rcap_buf;
2939         int error;
2940
2941         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("entering cdsize\n"));
2942
2943         softc = (struct cd_softc *)periph->softc;
2944
2945         ccb = cdgetccb(periph, CAM_PRIORITY_NORMAL);
2946
2947         /* XXX Should be M_WAITOK */
2948         rcap_buf = malloc(sizeof(struct scsi_read_capacity_data),
2949                           M_SCSICD, M_NOWAIT | M_ZERO);
2950         if (rcap_buf == NULL)
2951                 return (ENOMEM);
2952
2953         scsi_read_capacity(&ccb->csio,
2954                            /*retries*/ cd_retry_count,
2955                            cddone,
2956                            MSG_SIMPLE_Q_TAG,
2957                            rcap_buf,
2958                            SSD_FULL_SIZE,
2959                            /* timeout */20000);
2960
2961         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
2962                          /*sense_flags*/SF_RETRY_UA|SF_NO_PRINT);
2963
2964         xpt_release_ccb(ccb);
2965
2966         softc->params.disksize = scsi_4btoul(rcap_buf->addr) + 1;
2967         softc->params.blksize  = scsi_4btoul(rcap_buf->length);
2968         /* Make sure we got at least some block size. */
2969         if (error == 0 && softc->params.blksize == 0)
2970                 error = EIO;
2971         /*
2972          * SCSI-3 mandates that the reported blocksize shall be 2048.
2973          * Older drives sometimes report funny values, trim it down to
2974          * 2048, or other parts of the kernel will get confused.
2975          *
2976          * XXX we leave drives alone that might report 512 bytes, as
2977          * well as drives reporting more weird sizes like perhaps 4K.
2978          */
2979         if (softc->params.blksize > 2048 && softc->params.blksize <= 2352)
2980                 softc->params.blksize = 2048;
2981
2982         free(rcap_buf, M_SCSICD);
2983         *size = softc->params.disksize;
2984
2985         return (error);
2986
2987 }
2988
2989 static int
2990 cd6byteworkaround(union ccb *ccb)
2991 {
2992         u_int8_t *cdb;
2993         struct cam_periph *periph;
2994         struct cd_softc *softc;
2995         struct cd_mode_params *params;
2996         int frozen, found;
2997
2998         periph = xpt_path_periph(ccb->ccb_h.path);
2999         softc = (struct cd_softc *)periph->softc;
3000
3001         cdb = ccb->csio.cdb_io.cdb_bytes;
3002
3003         if ((ccb->ccb_h.flags & CAM_CDB_POINTER)
3004          || ((cdb[0] != MODE_SENSE_6)
3005           && (cdb[0] != MODE_SELECT_6)))
3006                 return (0);
3007
3008         /*
3009          * Because there is no convenient place to stash the overall
3010          * cd_mode_params structure pointer, we have to grab it like this.
3011          * This means that ALL MODE_SENSE and MODE_SELECT requests in the
3012          * cd(4) driver MUST go through cdgetmode() and cdsetmode()!
3013          *
3014          * XXX It would be nice if, at some point, we could increase the
3015          * number of available peripheral private pointers.  Both pointers
3016          * are currently used in most every peripheral driver.
3017          */
3018         found = 0;
3019
3020         STAILQ_FOREACH(params, &softc->mode_queue, links) {
3021                 if (params->mode_buf == ccb->csio.data_ptr) {
3022                         found = 1;
3023                         break;
3024                 }
3025         }
3026
3027         /*
3028          * This shouldn't happen.  All mode sense and mode select
3029          * operations in the cd(4) driver MUST go through cdgetmode() and
3030          * cdsetmode()!
3031          */
3032         if (found == 0) {
3033                 xpt_print(periph->path,
3034                     "mode buffer not found in mode queue!\n");
3035                 return (0);
3036         }
3037
3038         params->cdb_size = 10;
3039         softc->minimum_command_size = 10;
3040         xpt_print(ccb->ccb_h.path,
3041             "%s(6) failed, increasing minimum CDB size to 10 bytes\n",
3042             (cdb[0] == MODE_SENSE_6) ? "MODE_SENSE" : "MODE_SELECT");
3043
3044         if (cdb[0] == MODE_SENSE_6) {
3045                 struct scsi_mode_sense_10 ms10;
3046                 struct scsi_mode_sense_6 *ms6;
3047                 int len;
3048
3049                 ms6 = (struct scsi_mode_sense_6 *)cdb;
3050
3051                 bzero(&ms10, sizeof(ms10));
3052                 ms10.opcode = MODE_SENSE_10;
3053                 ms10.byte2 = ms6->byte2;
3054                 ms10.page = ms6->page;
3055
3056                 /*
3057                  * 10 byte mode header, block descriptor,
3058                  * sizeof(union cd_pages)
3059                  */
3060                 len = sizeof(struct cd_mode_data_10);
3061                 ccb->csio.dxfer_len = len;
3062
3063                 scsi_ulto2b(len, ms10.length);
3064                 ms10.control = ms6->control;
3065                 bcopy(&ms10, cdb, 10);
3066                 ccb->csio.cdb_len = 10;
3067         } else {
3068                 struct scsi_mode_select_10 ms10;
3069                 struct scsi_mode_select_6 *ms6;
3070                 struct scsi_mode_header_6 *header6;
3071                 struct scsi_mode_header_10 *header10;
3072                 struct scsi_mode_page_header *page_header;
3073                 int blk_desc_len, page_num, page_size, len;
3074
3075                 ms6 = (struct scsi_mode_select_6 *)cdb;
3076
3077                 bzero(&ms10, sizeof(ms10));
3078                 ms10.opcode = MODE_SELECT_10;
3079                 ms10.byte2 = ms6->byte2;
3080
3081                 header6 = (struct scsi_mode_header_6 *)params->mode_buf;
3082                 header10 = (struct scsi_mode_header_10 *)params->mode_buf;
3083
3084                 page_header = find_mode_page_6(header6);
3085                 page_num = page_header->page_code;
3086
3087                 blk_desc_len = header6->blk_desc_len;
3088
3089                 page_size = cdgetpagesize(page_num);
3090
3091                 if (page_size != (page_header->page_length +
3092                     sizeof(*page_header)))
3093                         page_size = page_header->page_length +
3094                                 sizeof(*page_header);
3095
3096                 len = sizeof(*header10) + blk_desc_len + page_size;
3097
3098                 len = min(params->alloc_len, len);
3099
3100                 /*
3101                  * Since the 6 byte parameter header is shorter than the 10
3102                  * byte parameter header, we need to copy the actual mode
3103                  * page data, and the block descriptor, if any, so things wind
3104                  * up in the right place.  The regions will overlap, but
3105                  * bcopy() does the right thing.
3106                  */
3107                 bcopy(params->mode_buf + sizeof(*header6),
3108                       params->mode_buf + sizeof(*header10),
3109                       len - sizeof(*header10));
3110
3111                 /* Make sure these fields are set correctly. */
3112                 scsi_ulto2b(0, header10->data_length);
3113                 header10->medium_type = 0;
3114                 scsi_ulto2b(blk_desc_len, header10->blk_desc_len);
3115
3116                 ccb->csio.dxfer_len = len;
3117
3118                 scsi_ulto2b(len, ms10.length);
3119                 ms10.control = ms6->control;
3120                 bcopy(&ms10, cdb, 10);
3121                 ccb->csio.cdb_len = 10;
3122         }
3123
3124         frozen = (ccb->ccb_h.status & CAM_DEV_QFRZN) != 0;
3125         ccb->ccb_h.status = CAM_REQUEUE_REQ;
3126         xpt_action(ccb);
3127         if (frozen) {
3128                 cam_release_devq(ccb->ccb_h.path,
3129                                  /*relsim_flags*/0,
3130                                  /*openings*/0,
3131                                  /*timeout*/0,
3132                                  /*getcount_only*/0);
3133         }
3134
3135         return (ERESTART);
3136 }
3137
3138 static int
3139 cderror(union ccb *ccb, u_int32_t cam_flags, u_int32_t sense_flags)
3140 {
3141         struct cd_softc *softc;
3142         struct cam_periph *periph;
3143         int error;
3144
3145         periph = xpt_path_periph(ccb->ccb_h.path);
3146         softc = (struct cd_softc *)periph->softc;
3147
3148         error = 0;
3149
3150         /*
3151          * We use a status of CAM_REQ_INVALID as shorthand -- if a 6 byte
3152          * CDB comes back with this particular error, try transforming it
3153          * into the 10 byte version.
3154          */
3155         if ((ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_INVALID) {
3156                 error = cd6byteworkaround(ccb);
3157         } else if (((ccb->ccb_h.status & CAM_STATUS_MASK) ==
3158                      CAM_SCSI_STATUS_ERROR)
3159          && (ccb->ccb_h.status & CAM_AUTOSNS_VALID)
3160          && (ccb->csio.scsi_status == SCSI_STATUS_CHECK_COND)
3161          && ((ccb->ccb_h.flags & CAM_SENSE_PHYS) == 0)
3162          && ((ccb->ccb_h.flags & CAM_SENSE_PTR) == 0)) {
3163                 int sense_key, error_code, asc, ascq;
3164
3165                 scsi_extract_sense(&ccb->csio.sense_data,
3166                                    &error_code, &sense_key, &asc, &ascq);
3167                 if (sense_key == SSD_KEY_ILLEGAL_REQUEST)
3168                         error = cd6byteworkaround(ccb);
3169         }
3170
3171         if (error == ERESTART)
3172                 return (error);
3173
3174         /*
3175          * XXX
3176          * Until we have a better way of doing pack validation,
3177          * don't treat UAs as errors.
3178          */
3179         sense_flags |= SF_RETRY_UA;
3180         return (cam_periph_error(ccb, cam_flags, sense_flags,
3181                                  &softc->saved_ccb));
3182 }
3183
3184 /*
3185  * Read table of contents
3186  */
3187 static int
3188 cdreadtoc(struct cam_periph *periph, u_int32_t mode, u_int32_t start,
3189           u_int8_t *data, u_int32_t len, u_int32_t sense_flags)
3190 {
3191         struct scsi_read_toc *scsi_cmd;
3192         u_int32_t ntoc;
3193         struct ccb_scsiio *csio;
3194         union ccb *ccb;
3195         int error;
3196
3197         ntoc = len;
3198         error = 0;
3199
3200         ccb = cdgetccb(periph, CAM_PRIORITY_NORMAL);
3201
3202         csio = &ccb->csio;
3203
3204         cam_fill_csio(csio,
3205                       /* retries */ cd_retry_count,
3206                       /* cbfcnp */ cddone,
3207                       /* flags */ CAM_DIR_IN,
3208                       /* tag_action */ MSG_SIMPLE_Q_TAG,
3209                       /* data_ptr */ data,
3210                       /* dxfer_len */ len,
3211                       /* sense_len */ SSD_FULL_SIZE,
3212                       sizeof(struct scsi_read_toc),
3213                       /* timeout */ 50000);
3214
3215         scsi_cmd = (struct scsi_read_toc *)&csio->cdb_io.cdb_bytes;
3216         bzero (scsi_cmd, sizeof(*scsi_cmd));
3217
3218         if (mode == CD_MSF_FORMAT)
3219                 scsi_cmd->byte2 |= CD_MSF;
3220         scsi_cmd->from_track = start;
3221         /* scsi_ulto2b(ntoc, (u_int8_t *)scsi_cmd->data_len); */
3222         scsi_cmd->data_len[0] = (ntoc) >> 8;
3223         scsi_cmd->data_len[1] = (ntoc) & 0xff;
3224
3225         scsi_cmd->op_code = READ_TOC;
3226
3227         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3228                          /*sense_flags*/SF_RETRY_UA | sense_flags);
3229
3230         xpt_release_ccb(ccb);
3231
3232         return(error);
3233 }
3234
3235 static int
3236 cdreadsubchannel(struct cam_periph *periph, u_int32_t mode,
3237                  u_int32_t format, int track,
3238                  struct cd_sub_channel_info *data, u_int32_t len)
3239 {
3240         struct scsi_read_subchannel *scsi_cmd;
3241         struct ccb_scsiio *csio;
3242         union ccb *ccb;
3243         int error;
3244
3245         error = 0;
3246
3247         ccb = cdgetccb(periph, CAM_PRIORITY_NORMAL);
3248
3249         csio = &ccb->csio;
3250
3251         cam_fill_csio(csio,
3252                       /* retries */ cd_retry_count,
3253                       /* cbfcnp */ cddone,
3254                       /* flags */ CAM_DIR_IN,
3255                       /* tag_action */ MSG_SIMPLE_Q_TAG,
3256                       /* data_ptr */ (u_int8_t *)data,
3257                       /* dxfer_len */ len,
3258                       /* sense_len */ SSD_FULL_SIZE,
3259                       sizeof(struct scsi_read_subchannel),
3260                       /* timeout */ 50000);
3261
3262         scsi_cmd = (struct scsi_read_subchannel *)&csio->cdb_io.cdb_bytes;
3263         bzero (scsi_cmd, sizeof(*scsi_cmd));
3264
3265         scsi_cmd->op_code = READ_SUBCHANNEL;
3266         if (mode == CD_MSF_FORMAT)
3267                 scsi_cmd->byte1 |= CD_MSF;
3268         scsi_cmd->byte2 = SRS_SUBQ;
3269         scsi_cmd->subchan_format = format;
3270         scsi_cmd->track = track;
3271         scsi_ulto2b(len, (u_int8_t *)scsi_cmd->data_len);
3272         scsi_cmd->control = 0;
3273
3274         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3275                          /*sense_flags*/SF_RETRY_UA);
3276
3277         xpt_release_ccb(ccb);
3278
3279         return(error);
3280 }
3281
3282
3283 /*
3284  * All MODE_SENSE requests in the cd(4) driver MUST go through this
3285  * routine.  See comments in cd6byteworkaround() for details.
3286  */
3287 static int
3288 cdgetmode(struct cam_periph *periph, struct cd_mode_params *data,
3289           u_int32_t page)
3290 {
3291         struct ccb_scsiio *csio;
3292         struct cd_softc *softc;
3293         union ccb *ccb;
3294         int param_len;
3295         int error;
3296
3297         softc = (struct cd_softc *)periph->softc;
3298
3299         ccb = cdgetccb(periph, CAM_PRIORITY_NORMAL);
3300
3301         csio = &ccb->csio;
3302
3303         data->cdb_size = softc->minimum_command_size;
3304         if (data->cdb_size < 10)
3305                 param_len = sizeof(struct cd_mode_data);
3306         else
3307                 param_len = sizeof(struct cd_mode_data_10);
3308
3309         /* Don't say we've got more room than we actually allocated */
3310         param_len = min(param_len, data->alloc_len);
3311
3312         scsi_mode_sense_len(csio,
3313                             /* retries */ cd_retry_count,
3314                             /* cbfcnp */ cddone,
3315                             /* tag_action */ MSG_SIMPLE_Q_TAG,
3316                             /* dbd */ 0,
3317                             /* page_code */ SMS_PAGE_CTRL_CURRENT,
3318                             /* page */ page,
3319                             /* param_buf */ data->mode_buf,
3320                             /* param_len */ param_len,
3321                             /* minimum_cmd_size */ softc->minimum_command_size,
3322                             /* sense_len */ SSD_FULL_SIZE,
3323                             /* timeout */ 50000);
3324
3325         /*
3326          * It would be nice not to have to do this, but there's no
3327          * available pointer in the CCB that would allow us to stuff the
3328          * mode params structure in there and retrieve it in
3329          * cd6byteworkaround(), so we can set the cdb size.  The cdb size
3330          * lets the caller know what CDB size we ended up using, so they
3331          * can find the actual mode page offset.
3332          */
3333         STAILQ_INSERT_TAIL(&softc->mode_queue, data, links);
3334
3335         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3336                          /*sense_flags*/SF_RETRY_UA);
3337
3338         xpt_release_ccb(ccb);
3339
3340         STAILQ_REMOVE(&softc->mode_queue, data, cd_mode_params, links);
3341
3342         /*
3343          * This is a bit of belt-and-suspenders checking, but if we run
3344          * into a situation where the target sends back multiple block
3345          * descriptors, we might not have enough space in the buffer to
3346          * see the whole mode page.  Better to return an error than
3347          * potentially access memory beyond our malloced region.
3348          */
3349         if (error == 0) {
3350                 u_int32_t data_len;
3351
3352                 if (data->cdb_size == 10) {
3353                         struct scsi_mode_header_10 *hdr10;
3354
3355                         hdr10 = (struct scsi_mode_header_10 *)data->mode_buf;
3356                         data_len = scsi_2btoul(hdr10->data_length);
3357                         data_len += sizeof(hdr10->data_length);
3358                 } else {
3359                         struct scsi_mode_header_6 *hdr6;
3360
3361                         hdr6 = (struct scsi_mode_header_6 *)data->mode_buf;
3362                         data_len = hdr6->data_length;
3363                         data_len += sizeof(hdr6->data_length);
3364                 }
3365
3366                 /*
3367                  * Complain if there is more mode data available than we
3368                  * allocated space for.  This could potentially happen if
3369                  * we miscalculated the page length for some reason, if the
3370                  * drive returns multiple block descriptors, or if it sets
3371                  * the data length incorrectly.
3372                  */
3373                 if (data_len > data->alloc_len) {
3374                         xpt_print(periph->path, "allocated modepage %d length "
3375                             "%d < returned length %d\n", page, data->alloc_len,
3376                             data_len);
3377                         error = ENOSPC;
3378                 }
3379         }
3380         return (error);
3381 }
3382
3383 /*
3384  * All MODE_SELECT requests in the cd(4) driver MUST go through this
3385  * routine.  See comments in cd6byteworkaround() for details.
3386  */
3387 static int
3388 cdsetmode(struct cam_periph *periph, struct cd_mode_params *data)
3389 {
3390         struct ccb_scsiio *csio;
3391         struct cd_softc *softc;
3392         union ccb *ccb;
3393         int cdb_size, param_len;
3394         int error;
3395
3396         softc = (struct cd_softc *)periph->softc;
3397
3398         ccb = cdgetccb(periph, CAM_PRIORITY_NORMAL);
3399
3400         csio = &ccb->csio;
3401
3402         error = 0;
3403
3404         /*
3405          * If the data is formatted for the 10 byte version of the mode
3406          * select parameter list, we need to use the 10 byte CDB.
3407          * Otherwise, we use whatever the stored minimum command size.
3408          */
3409         if (data->cdb_size == 10)
3410                 cdb_size = data->cdb_size;
3411         else
3412                 cdb_size = softc->minimum_command_size;
3413
3414         if (cdb_size >= 10) {
3415                 struct scsi_mode_header_10 *mode_header;
3416                 u_int32_t data_len;
3417
3418                 mode_header = (struct scsi_mode_header_10 *)data->mode_buf;
3419
3420                 data_len = scsi_2btoul(mode_header->data_length);
3421
3422                 scsi_ulto2b(0, mode_header->data_length);
3423                 /*
3424                  * SONY drives do not allow a mode select with a medium_type
3425                  * value that has just been returned by a mode sense; use a
3426                  * medium_type of 0 (Default) instead.
3427                  */
3428                 mode_header->medium_type = 0;
3429
3430                 /*
3431                  * Pass back whatever the drive passed to us, plus the size
3432                  * of the data length field.
3433                  */
3434                 param_len = data_len + sizeof(mode_header->data_length);
3435
3436         } else {
3437                 struct scsi_mode_header_6 *mode_header;
3438
3439                 mode_header = (struct scsi_mode_header_6 *)data->mode_buf;
3440
3441                 param_len = mode_header->data_length + 1;
3442
3443                 mode_header->data_length = 0;
3444                 /*
3445                  * SONY drives do not allow a mode select with a medium_type
3446                  * value that has just been returned by a mode sense; use a
3447                  * medium_type of 0 (Default) instead.
3448                  */
3449                 mode_header->medium_type = 0;
3450         }
3451
3452         /* Don't say we've got more room than we actually allocated */
3453         param_len = min(param_len, data->alloc_len);
3454
3455         scsi_mode_select_len(csio,
3456                              /* retries */ cd_retry_count,
3457                              /* cbfcnp */ cddone,
3458                              /* tag_action */ MSG_SIMPLE_Q_TAG,
3459                              /* scsi_page_fmt */ 1,
3460                              /* save_pages */ 0,
3461                              /* param_buf */ data->mode_buf,
3462                              /* param_len */ param_len,
3463                              /* minimum_cmd_size */ cdb_size,
3464                              /* sense_len */ SSD_FULL_SIZE,
3465                              /* timeout */ 50000);
3466
3467         /* See comments in cdgetmode() and cd6byteworkaround(). */
3468         STAILQ_INSERT_TAIL(&softc->mode_queue, data, links);
3469
3470         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3471                          /*sense_flags*/SF_RETRY_UA);
3472
3473         xpt_release_ccb(ccb);
3474
3475         STAILQ_REMOVE(&softc->mode_queue, data, cd_mode_params, links);
3476
3477         return (error);
3478 }
3479
3480
3481 static int
3482 cdplay(struct cam_periph *periph, u_int32_t blk, u_int32_t len)
3483 {
3484         struct ccb_scsiio *csio;
3485         union ccb *ccb;
3486         int error;
3487         u_int8_t cdb_len;
3488
3489         error = 0;
3490         ccb = cdgetccb(periph, CAM_PRIORITY_NORMAL);
3491         csio = &ccb->csio;
3492         /*
3493          * Use the smallest possible command to perform the operation.
3494          */
3495         if ((len & 0xffff0000) == 0) {
3496                 /*
3497                  * We can fit in a 10 byte cdb.
3498                  */
3499                 struct scsi_play_10 *scsi_cmd;
3500
3501                 scsi_cmd = (struct scsi_play_10 *)&csio->cdb_io.cdb_bytes;
3502                 bzero (scsi_cmd, sizeof(*scsi_cmd));
3503                 scsi_cmd->op_code = PLAY_10;
3504                 scsi_ulto4b(blk, (u_int8_t *)scsi_cmd->blk_addr);
3505                 scsi_ulto2b(len, (u_int8_t *)scsi_cmd->xfer_len);
3506                 cdb_len = sizeof(*scsi_cmd);
3507         } else  {
3508                 struct scsi_play_12 *scsi_cmd;
3509
3510                 scsi_cmd = (struct scsi_play_12 *)&csio->cdb_io.cdb_bytes;
3511                 bzero (scsi_cmd, sizeof(*scsi_cmd));
3512                 scsi_cmd->op_code = PLAY_12;
3513                 scsi_ulto4b(blk, (u_int8_t *)scsi_cmd->blk_addr);
3514                 scsi_ulto4b(len, (u_int8_t *)scsi_cmd->xfer_len);
3515                 cdb_len = sizeof(*scsi_cmd);
3516         }
3517         cam_fill_csio(csio,
3518                       /*retries*/ cd_retry_count,
3519                       cddone,
3520                       /*flags*/CAM_DIR_NONE,
3521                       MSG_SIMPLE_Q_TAG,
3522                       /*dataptr*/NULL,
3523                       /*datalen*/0,
3524                       /*sense_len*/SSD_FULL_SIZE,
3525                       cdb_len,
3526                       /*timeout*/50 * 1000);
3527
3528         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3529                          /*sense_flags*/SF_RETRY_UA);
3530
3531         xpt_release_ccb(ccb);
3532
3533         return(error);
3534 }
3535
3536 static int
3537 cdplaymsf(struct cam_periph *periph, u_int32_t startm, u_int32_t starts,
3538           u_int32_t startf, u_int32_t endm, u_int32_t ends, u_int32_t endf)
3539 {
3540         struct scsi_play_msf *scsi_cmd;
3541         struct ccb_scsiio *csio;
3542         union ccb *ccb;
3543         int error;
3544
3545         error = 0;
3546
3547         ccb = cdgetccb(periph, CAM_PRIORITY_NORMAL);
3548
3549         csio = &ccb->csio;
3550
3551         cam_fill_csio(csio,
3552                       /* retries */ cd_retry_count,
3553                       /* cbfcnp */ cddone,
3554                       /* flags */ CAM_DIR_NONE,
3555                       /* tag_action */ MSG_SIMPLE_Q_TAG,
3556                       /* data_ptr */ NULL,
3557                       /* dxfer_len */ 0,
3558                       /* sense_len */ SSD_FULL_SIZE,
3559                       sizeof(struct scsi_play_msf),
3560                       /* timeout */ 50000);
3561
3562         scsi_cmd = (struct scsi_play_msf *)&csio->cdb_io.cdb_bytes;
3563         bzero (scsi_cmd, sizeof(*scsi_cmd));
3564
3565         scsi_cmd->op_code = PLAY_MSF;
3566         scsi_cmd->start_m = startm;
3567         scsi_cmd->start_s = starts;
3568         scsi_cmd->start_f = startf;
3569         scsi_cmd->end_m = endm;
3570         scsi_cmd->end_s = ends;
3571         scsi_cmd->end_f = endf;
3572
3573         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3574                          /*sense_flags*/SF_RETRY_UA);
3575
3576         xpt_release_ccb(ccb);
3577
3578         return(error);
3579 }
3580
3581
3582 static int
3583 cdplaytracks(struct cam_periph *periph, u_int32_t strack, u_int32_t sindex,
3584              u_int32_t etrack, u_int32_t eindex)
3585 {
3586         struct scsi_play_track *scsi_cmd;
3587         struct ccb_scsiio *csio;
3588         union ccb *ccb;
3589         int error;
3590
3591         error = 0;
3592
3593         ccb = cdgetccb(periph, CAM_PRIORITY_NORMAL);
3594
3595         csio = &ccb->csio;
3596
3597         cam_fill_csio(csio,
3598                       /* retries */ cd_retry_count,
3599                       /* cbfcnp */ cddone,
3600                       /* flags */ CAM_DIR_NONE,
3601                       /* tag_action */ MSG_SIMPLE_Q_TAG,
3602                       /* data_ptr */ NULL,
3603                       /* dxfer_len */ 0,
3604                       /* sense_len */ SSD_FULL_SIZE,
3605                       sizeof(struct scsi_play_track),
3606                       /* timeout */ 50000);
3607
3608         scsi_cmd = (struct scsi_play_track *)&csio->cdb_io.cdb_bytes;
3609         bzero (scsi_cmd, sizeof(*scsi_cmd));
3610
3611         scsi_cmd->op_code = PLAY_TRACK;
3612         scsi_cmd->start_track = strack;
3613         scsi_cmd->start_index = sindex;
3614         scsi_cmd->end_track = etrack;
3615         scsi_cmd->end_index = eindex;
3616
3617         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3618                          /*sense_flags*/SF_RETRY_UA);
3619
3620         xpt_release_ccb(ccb);
3621
3622         return(error);
3623 }
3624
3625 static int
3626 cdpause(struct cam_periph *periph, u_int32_t go)
3627 {
3628         struct scsi_pause *scsi_cmd;
3629         struct ccb_scsiio *csio;
3630         union ccb *ccb;
3631         int error;
3632
3633         error = 0;
3634
3635         ccb = cdgetccb(periph, CAM_PRIORITY_NORMAL);
3636
3637         csio = &ccb->csio;
3638
3639         cam_fill_csio(csio,
3640                       /* retries */ cd_retry_count,
3641                       /* cbfcnp */ cddone,
3642                       /* flags */ CAM_DIR_NONE,
3643                       /* tag_action */ MSG_SIMPLE_Q_TAG,
3644                       /* data_ptr */ NULL,
3645                       /* dxfer_len */ 0,
3646                       /* sense_len */ SSD_FULL_SIZE,
3647                       sizeof(struct scsi_pause),
3648                       /* timeout */ 50000);
3649
3650         scsi_cmd = (struct scsi_pause *)&csio->cdb_io.cdb_bytes;
3651         bzero (scsi_cmd, sizeof(*scsi_cmd));
3652
3653         scsi_cmd->op_code = PAUSE;
3654         scsi_cmd->resume = go;
3655
3656         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3657                          /*sense_flags*/SF_RETRY_UA);
3658
3659         xpt_release_ccb(ccb);
3660
3661         return(error);
3662 }
3663
3664 static int
3665 cdstartunit(struct cam_periph *periph, int load)
3666 {
3667         union ccb *ccb;
3668         int error;
3669
3670         error = 0;
3671
3672         ccb = cdgetccb(periph, CAM_PRIORITY_NORMAL);
3673
3674         scsi_start_stop(&ccb->csio,
3675                         /* retries */ cd_retry_count,
3676                         /* cbfcnp */ cddone,
3677                         /* tag_action */ MSG_SIMPLE_Q_TAG,
3678                         /* start */ TRUE,
3679                         /* load_eject */ load,
3680                         /* immediate */ FALSE,
3681                         /* sense_len */ SSD_FULL_SIZE,
3682                         /* timeout */ 50000);
3683
3684         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3685                          /*sense_flags*/SF_RETRY_UA);
3686
3687         xpt_release_ccb(ccb);
3688
3689         return(error);
3690 }
3691
3692 static int
3693 cdstopunit(struct cam_periph *periph, u_int32_t eject)
3694 {
3695         union ccb *ccb;
3696         int error;
3697
3698         error = 0;
3699
3700         ccb = cdgetccb(periph, CAM_PRIORITY_NORMAL);
3701
3702         scsi_start_stop(&ccb->csio,
3703                         /* retries */ cd_retry_count,
3704                         /* cbfcnp */ cddone,
3705                         /* tag_action */ MSG_SIMPLE_Q_TAG,
3706                         /* start */ FALSE,
3707                         /* load_eject */ eject,
3708                         /* immediate */ FALSE,
3709                         /* sense_len */ SSD_FULL_SIZE,
3710                         /* timeout */ 50000);
3711
3712         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3713                          /*sense_flags*/SF_RETRY_UA);
3714
3715         xpt_release_ccb(ccb);
3716
3717         return(error);
3718 }
3719
3720 static int
3721 cdsetspeed(struct cam_periph *periph, u_int32_t rdspeed, u_int32_t wrspeed)
3722 {
3723         struct scsi_set_speed *scsi_cmd;
3724         struct ccb_scsiio *csio;
3725         union ccb *ccb;
3726         int error;
3727
3728         error = 0;
3729         ccb = cdgetccb(periph, CAM_PRIORITY_NORMAL);
3730         csio = &ccb->csio;
3731
3732         /* Preserve old behavior: units in multiples of CDROM speed */
3733         if (rdspeed < 177)
3734                 rdspeed *= 177;
3735         if (wrspeed < 177)
3736                 wrspeed *= 177;
3737
3738         cam_fill_csio(csio,
3739                       /* retries */ cd_retry_count,
3740                       /* cbfcnp */ cddone,
3741                       /* flags */ CAM_DIR_NONE,
3742                       /* tag_action */ MSG_SIMPLE_Q_TAG,
3743                       /* data_ptr */ NULL,
3744                       /* dxfer_len */ 0,
3745                       /* sense_len */ SSD_FULL_SIZE,
3746                       sizeof(struct scsi_set_speed),
3747                       /* timeout */ 50000);
3748
3749         scsi_cmd = (struct scsi_set_speed *)&csio->cdb_io.cdb_bytes;
3750         bzero(scsi_cmd, sizeof(*scsi_cmd));
3751
3752         scsi_cmd->opcode = SET_CD_SPEED;
3753         scsi_ulto2b(rdspeed, scsi_cmd->readspeed);
3754         scsi_ulto2b(wrspeed, scsi_cmd->writespeed);
3755
3756         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3757                          /*sense_flags*/SF_RETRY_UA);
3758
3759         xpt_release_ccb(ccb);
3760
3761         return(error);
3762 }
3763
3764 static int
3765 cdreportkey(struct cam_periph *periph, struct dvd_authinfo *authinfo)
3766 {
3767         union ccb *ccb;
3768         u_int8_t *databuf;
3769         u_int32_t lba;
3770         int error;
3771         int length;
3772
3773         error = 0;
3774         databuf = NULL;
3775         lba = 0;
3776
3777         switch (authinfo->format) {
3778         case DVD_REPORT_AGID:
3779                 length = sizeof(struct scsi_report_key_data_agid);
3780                 break;
3781         case DVD_REPORT_CHALLENGE:
3782                 length = sizeof(struct scsi_report_key_data_challenge);
3783                 break;
3784         case DVD_REPORT_KEY1:
3785                 length = sizeof(struct scsi_report_key_data_key1_key2);
3786                 break;
3787         case DVD_REPORT_TITLE_KEY:
3788                 length = sizeof(struct scsi_report_key_data_title);
3789                 /* The lba field is only set for the title key */
3790                 lba = authinfo->lba;
3791                 break;
3792         case DVD_REPORT_ASF:
3793                 length = sizeof(struct scsi_report_key_data_asf);
3794                 break;
3795         case DVD_REPORT_RPC:
3796                 length = sizeof(struct scsi_report_key_data_rpc);
3797                 break;
3798         case DVD_INVALIDATE_AGID:
3799                 length = 0;
3800                 break;
3801         default:
3802                 return (EINVAL);
3803         }
3804
3805         if (length != 0) {
3806                 databuf = malloc(length, M_DEVBUF, M_WAITOK | M_ZERO);
3807         } else
3808                 databuf = NULL;
3809
3810         cam_periph_lock(periph);
3811         ccb = cdgetccb(periph, CAM_PRIORITY_NORMAL);
3812
3813         scsi_report_key(&ccb->csio,
3814                         /* retries */ cd_retry_count,
3815                         /* cbfcnp */ cddone,
3816                         /* tag_action */ MSG_SIMPLE_Q_TAG,
3817                         /* lba */ lba,
3818                         /* agid */ authinfo->agid,
3819                         /* key_format */ authinfo->format,
3820                         /* data_ptr */ databuf,
3821                         /* dxfer_len */ length,
3822                         /* sense_len */ SSD_FULL_SIZE,
3823                         /* timeout */ 50000);
3824
3825         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3826                          /*sense_flags*/SF_RETRY_UA);
3827
3828         if (error != 0)
3829                 goto bailout;
3830
3831         if (ccb->csio.resid != 0) {
3832                 xpt_print(periph->path, "warning, residual for report key "
3833                     "command is %d\n", ccb->csio.resid);
3834         }
3835
3836         switch(authinfo->format) {
3837         case DVD_REPORT_AGID: {
3838                 struct scsi_report_key_data_agid *agid_data;
3839
3840                 agid_data = (struct scsi_report_key_data_agid *)databuf;
3841
3842                 authinfo->agid = (agid_data->agid & RKD_AGID_MASK) >>
3843                         RKD_AGID_SHIFT;
3844                 break;
3845         }
3846         case DVD_REPORT_CHALLENGE: {
3847                 struct scsi_report_key_data_challenge *chal_data;
3848
3849                 chal_data = (struct scsi_report_key_data_challenge *)databuf;
3850
3851                 bcopy(chal_data->challenge_key, authinfo->keychal,
3852                       min(sizeof(chal_data->challenge_key),
3853                           sizeof(authinfo->keychal)));
3854                 break;
3855         }
3856         case DVD_REPORT_KEY1: {
3857                 struct scsi_report_key_data_key1_key2 *key1_data;
3858
3859                 key1_data = (struct scsi_report_key_data_key1_key2 *)databuf;
3860
3861                 bcopy(key1_data->key1, authinfo->keychal,
3862                       min(sizeof(key1_data->key1), sizeof(authinfo->keychal)));
3863                 break;
3864         }
3865         case DVD_REPORT_TITLE_KEY: {
3866                 struct scsi_report_key_data_title *title_data;
3867
3868                 title_data = (struct scsi_report_key_data_title *)databuf;
3869
3870                 authinfo->cpm = (title_data->byte0 & RKD_TITLE_CPM) >>
3871                         RKD_TITLE_CPM_SHIFT;
3872                 authinfo->cp_sec = (title_data->byte0 & RKD_TITLE_CP_SEC) >>
3873                         RKD_TITLE_CP_SEC_SHIFT;
3874                 authinfo->cgms = (title_data->byte0 & RKD_TITLE_CMGS_MASK) >>
3875                         RKD_TITLE_CMGS_SHIFT;
3876                 bcopy(title_data->title_key, authinfo->keychal,
3877                       min(sizeof(title_data->title_key),
3878                           sizeof(authinfo->keychal)));
3879                 break;
3880         }
3881         case DVD_REPORT_ASF: {
3882                 struct scsi_report_key_data_asf *asf_data;
3883
3884                 asf_data = (struct scsi_report_key_data_asf *)databuf;
3885
3886                 authinfo->asf = asf_data->success & RKD_ASF_SUCCESS;
3887                 break;
3888         }
3889         case DVD_REPORT_RPC: {
3890                 struct scsi_report_key_data_rpc *rpc_data;
3891
3892                 rpc_data = (struct scsi_report_key_data_rpc *)databuf;
3893
3894                 authinfo->reg_type = (rpc_data->byte4 & RKD_RPC_TYPE_MASK) >>
3895                         RKD_RPC_TYPE_SHIFT;
3896                 authinfo->vend_rsts =
3897                         (rpc_data->byte4 & RKD_RPC_VENDOR_RESET_MASK) >>
3898                         RKD_RPC_VENDOR_RESET_SHIFT;
3899                 authinfo->user_rsts = rpc_data->byte4 & RKD_RPC_USER_RESET_MASK;
3900                 authinfo->region = rpc_data->region_mask;
3901                 authinfo->rpc_scheme = rpc_data->rpc_scheme1;
3902                 break;
3903         }
3904         case DVD_INVALIDATE_AGID:
3905                 break;
3906         default:
3907                 /* This should be impossible, since we checked above */
3908                 error = EINVAL;
3909                 goto bailout;
3910                 break; /* NOTREACHED */
3911         }
3912
3913 bailout:
3914         xpt_release_ccb(ccb);
3915         cam_periph_unlock(periph);
3916
3917         if (databuf != NULL)
3918                 free(databuf, M_DEVBUF);
3919
3920         return(error);
3921 }
3922
3923 static int
3924 cdsendkey(struct cam_periph *periph, struct dvd_authinfo *authinfo)
3925 {
3926         union ccb *ccb;
3927         u_int8_t *databuf;
3928         int length;
3929         int error;
3930
3931         error = 0;
3932         databuf = NULL;
3933
3934         switch(authinfo->format) {
3935         case DVD_SEND_CHALLENGE: {
3936                 struct scsi_report_key_data_challenge *challenge_data;
3937
3938                 length = sizeof(*challenge_data);
3939
3940                 challenge_data = malloc(length, M_DEVBUF, M_WAITOK | M_ZERO);
3941
3942                 databuf = (u_int8_t *)challenge_data;
3943
3944                 scsi_ulto2b(length - sizeof(challenge_data->data_len),
3945                             challenge_data->data_len);
3946
3947                 bcopy(authinfo->keychal, challenge_data->challenge_key,
3948                       min(sizeof(authinfo->keychal),
3949                           sizeof(challenge_data->challenge_key)));
3950                 break;
3951         }
3952         case DVD_SEND_KEY2: {
3953                 struct scsi_report_key_data_key1_key2 *key2_data;
3954
3955                 length = sizeof(*key2_data);
3956
3957                 key2_data = malloc(length, M_DEVBUF, M_WAITOK | M_ZERO);
3958
3959                 databuf = (u_int8_t *)key2_data;
3960
3961                 scsi_ulto2b(length - sizeof(key2_data->data_len),
3962                             key2_data->data_len);
3963
3964                 bcopy(authinfo->keychal, key2_data->key1,
3965                       min(sizeof(authinfo->keychal), sizeof(key2_data->key1)));
3966
3967                 break;
3968         }
3969         case DVD_SEND_RPC: {
3970                 struct scsi_send_key_data_rpc *rpc_data;
3971
3972                 length = sizeof(*rpc_data);
3973
3974                 rpc_data = malloc(length, M_DEVBUF, M_WAITOK | M_ZERO);
3975
3976                 databuf = (u_int8_t *)rpc_data;
3977
3978                 scsi_ulto2b(length - sizeof(rpc_data->data_len),
3979                             rpc_data->data_len);
3980
3981                 rpc_data->region_code = authinfo->region;
3982                 break;
3983         }
3984         default:
3985                 return (EINVAL);
3986         }
3987
3988         cam_periph_lock(periph);
3989         ccb = cdgetccb(periph, CAM_PRIORITY_NORMAL);
3990
3991         scsi_send_key(&ccb->csio,
3992                       /* retries */ cd_retry_count,
3993                       /* cbfcnp */ cddone,
3994                       /* tag_action */ MSG_SIMPLE_Q_TAG,
3995                       /* agid */ authinfo->agid,
3996                       /* key_format */ authinfo->format,
3997                       /* data_ptr */ databuf,
3998                       /* dxfer_len */ length,
3999                       /* sense_len */ SSD_FULL_SIZE,
4000                       /* timeout */ 50000);
4001
4002         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
4003                          /*sense_flags*/SF_RETRY_UA);
4004
4005         xpt_release_ccb(ccb);
4006         cam_periph_unlock(periph);
4007
4008         if (databuf != NULL)
4009                 free(databuf, M_DEVBUF);
4010
4011         return(error);
4012 }
4013
4014 static int
4015 cdreaddvdstructure(struct cam_periph *periph, struct dvd_struct *dvdstruct)
4016 {
4017         union ccb *ccb;
4018         u_int8_t *databuf;
4019         u_int32_t address;
4020         int error;
4021         int length;
4022
4023         error = 0;
4024         databuf = NULL;
4025         /* The address is reserved for many of the formats */
4026         address = 0;
4027
4028         switch(dvdstruct->format) {
4029         case DVD_STRUCT_PHYSICAL:
4030                 length = sizeof(struct scsi_read_dvd_struct_data_physical);
4031                 break;
4032         case DVD_STRUCT_COPYRIGHT:
4033                 length = sizeof(struct scsi_read_dvd_struct_data_copyright);
4034                 break;
4035         case DVD_STRUCT_DISCKEY:
4036                 length = sizeof(struct scsi_read_dvd_struct_data_disc_key);
4037                 break;
4038         case DVD_STRUCT_BCA:
4039                 length = sizeof(struct scsi_read_dvd_struct_data_bca);
4040                 break;
4041         case DVD_STRUCT_MANUFACT:
4042                 length = sizeof(struct scsi_read_dvd_struct_data_manufacturer);
4043                 break;
4044         case DVD_STRUCT_CMI:
4045                 return (ENODEV);
4046         case DVD_STRUCT_PROTDISCID:
4047                 length = sizeof(struct scsi_read_dvd_struct_data_prot_discid);
4048                 break;
4049         case DVD_STRUCT_DISCKEYBLOCK:
4050                 length = sizeof(struct scsi_read_dvd_struct_data_disc_key_blk);
4051                 break;
4052         case DVD_STRUCT_DDS:
4053                 length = sizeof(struct scsi_read_dvd_struct_data_dds);
4054                 break;
4055         case DVD_STRUCT_MEDIUM_STAT:
4056                 length = sizeof(struct scsi_read_dvd_struct_data_medium_status);
4057                 break;
4058         case DVD_STRUCT_SPARE_AREA:
4059                 length = sizeof(struct scsi_read_dvd_struct_data_spare_area);
4060                 break;
4061         case DVD_STRUCT_RMD_LAST:
4062                 return (ENODEV);
4063         case DVD_STRUCT_RMD_RMA:
4064                 return (ENODEV);
4065         case DVD_STRUCT_PRERECORDED:
4066                 length = sizeof(struct scsi_read_dvd_struct_data_leadin);
4067                 break;
4068         case DVD_STRUCT_UNIQUEID:
4069                 length = sizeof(struct scsi_read_dvd_struct_data_disc_id);
4070                 break;
4071         case DVD_STRUCT_DCB:
4072                 return (ENODEV);
4073         case DVD_STRUCT_LIST:
4074                 /*
4075                  * This is the maximum allocation length for the READ DVD
4076                  * STRUCTURE command.  There's nothing in the MMC3 spec
4077                  * that indicates a limit in the amount of data that can
4078                  * be returned from this call, other than the limits
4079                  * imposed by the 2-byte length variables.
4080                  */
4081                 length = 65535;
4082                 break;
4083         default:
4084                 return (EINVAL);
4085         }
4086
4087         if (length != 0) {
4088                 databuf = malloc(length, M_DEVBUF, M_WAITOK | M_ZERO);
4089         } else
4090                 databuf = NULL;
4091
4092         cam_periph_lock(periph);
4093         ccb = cdgetccb(periph, CAM_PRIORITY_NORMAL);
4094
4095         scsi_read_dvd_structure(&ccb->csio,
4096                                 /* retries */ cd_retry_count,
4097                                 /* cbfcnp */ cddone,
4098                                 /* tag_action */ MSG_SIMPLE_Q_TAG,
4099                                 /* lba */ address,
4100                                 /* layer_number */ dvdstruct->layer_num,
4101                                 /* key_format */ dvdstruct->format,
4102                                 /* agid */ dvdstruct->agid,
4103                                 /* data_ptr */ databuf,
4104                                 /* dxfer_len */ length,
4105                                 /* sense_len */ SSD_FULL_SIZE,
4106                                 /* timeout */ 50000);
4107
4108         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
4109                          /*sense_flags*/SF_RETRY_UA);
4110
4111         if (error != 0)
4112                 goto bailout;
4113
4114         switch(dvdstruct->format) {
4115         case DVD_STRUCT_PHYSICAL: {
4116                 struct scsi_read_dvd_struct_data_layer_desc *inlayer;
4117                 struct dvd_layer *outlayer;
4118                 struct scsi_read_dvd_struct_data_physical *phys_data;
4119
4120                 phys_data =
4121                         (struct scsi_read_dvd_struct_data_physical *)databuf;
4122                 inlayer = &phys_data->layer_desc;
4123                 outlayer = (struct dvd_layer *)&dvdstruct->data;
4124
4125                 dvdstruct->length = sizeof(*inlayer);
4126
4127                 outlayer->book_type = (inlayer->book_type_version &
4128                         RDSD_BOOK_TYPE_MASK) >> RDSD_BOOK_TYPE_SHIFT;
4129                 outlayer->book_version = (inlayer->book_type_version &
4130                         RDSD_BOOK_VERSION_MASK);
4131                 outlayer->disc_size = (inlayer->disc_size_max_rate &
4132                         RDSD_DISC_SIZE_MASK) >> RDSD_DISC_SIZE_SHIFT;
4133                 outlayer->max_rate = (inlayer->disc_size_max_rate &
4134                         RDSD_MAX_RATE_MASK);
4135                 outlayer->nlayers = (inlayer->layer_info &
4136                         RDSD_NUM_LAYERS_MASK) >> RDSD_NUM_LAYERS_SHIFT;
4137                 outlayer->track_path = (inlayer->layer_info &
4138                         RDSD_TRACK_PATH_MASK) >> RDSD_TRACK_PATH_SHIFT;
4139                 outlayer->layer_type = (inlayer->layer_info &
4140                         RDSD_LAYER_TYPE_MASK);
4141                 outlayer->linear_density = (inlayer->density &
4142                         RDSD_LIN_DENSITY_MASK) >> RDSD_LIN_DENSITY_SHIFT;
4143                 outlayer->track_density = (inlayer->density &
4144                         RDSD_TRACK_DENSITY_MASK);
4145                 outlayer->bca = (inlayer->bca & RDSD_BCA_MASK) >>
4146                         RDSD_BCA_SHIFT;
4147                 outlayer->start_sector = scsi_3btoul(inlayer->main_data_start);
4148                 outlayer->end_sector = scsi_3btoul(inlayer->main_data_end);
4149                 outlayer->end_sector_l0 =
4150                         scsi_3btoul(inlayer->end_sector_layer0);
4151                 break;
4152         }
4153         case DVD_STRUCT_COPYRIGHT: {
4154                 struct scsi_read_dvd_struct_data_copyright *copy_data;
4155
4156                 copy_data = (struct scsi_read_dvd_struct_data_copyright *)
4157                         databuf;
4158
4159                 dvdstruct->cpst = copy_data->cps_type;
4160                 dvdstruct->rmi = copy_data->region_info;
4161                 dvdstruct->length = 0;
4162
4163                 break;
4164         }
4165         default:
4166                 /*
4167                  * Tell the user what the overall length is, no matter
4168                  * what we can actually fit in the data buffer.
4169                  */
4170                 dvdstruct->length = length - ccb->csio.resid -
4171                         sizeof(struct scsi_read_dvd_struct_data_header);
4172
4173                 /*
4174                  * But only actually copy out the smaller of what we read
4175                  * in or what the structure can take.
4176                  */
4177                 bcopy(databuf + sizeof(struct scsi_read_dvd_struct_data_header),
4178                       dvdstruct->data,
4179                       min(sizeof(dvdstruct->data), dvdstruct->length));
4180                 break;
4181         }
4182
4183 bailout:
4184         xpt_release_ccb(ccb);
4185         cam_periph_unlock(periph);
4186
4187         if (databuf != NULL)
4188                 free(databuf, M_DEVBUF);
4189
4190         return(error);
4191 }
4192
4193 void
4194 scsi_report_key(struct ccb_scsiio *csio, u_int32_t retries,
4195                 void (*cbfcnp)(struct cam_periph *, union ccb *),
4196                 u_int8_t tag_action, u_int32_t lba, u_int8_t agid,
4197                 u_int8_t key_format, u_int8_t *data_ptr, u_int32_t dxfer_len,
4198                 u_int8_t sense_len, u_int32_t timeout)
4199 {
4200         struct scsi_report_key *scsi_cmd;
4201
4202         scsi_cmd = (struct scsi_report_key *)&csio->cdb_io.cdb_bytes;
4203         bzero(scsi_cmd, sizeof(*scsi_cmd));
4204         scsi_cmd->opcode = REPORT_KEY;
4205         scsi_ulto4b(lba, scsi_cmd->lba);
4206         scsi_ulto2b(dxfer_len, scsi_cmd->alloc_len);
4207         scsi_cmd->agid_keyformat = (agid << RK_KF_AGID_SHIFT) |
4208                 (key_format & RK_KF_KEYFORMAT_MASK);
4209
4210         cam_fill_csio(csio,
4211                       retries,
4212                       cbfcnp,
4213                       /*flags*/ (dxfer_len == 0) ? CAM_DIR_NONE : CAM_DIR_IN,
4214                       tag_action,
4215                       /*data_ptr*/ data_ptr,
4216                       /*dxfer_len*/ dxfer_len,
4217                       sense_len,
4218                       sizeof(*scsi_cmd),
4219                       timeout);
4220 }
4221
4222 void
4223 scsi_send_key(struct ccb_scsiio *csio, u_int32_t retries,
4224               void (*cbfcnp)(struct cam_periph *, union ccb *),
4225               u_int8_t tag_action, u_int8_t agid, u_int8_t key_format,
4226               u_int8_t *data_ptr, u_int32_t dxfer_len, u_int8_t sense_len,
4227               u_int32_t timeout)
4228 {
4229         struct scsi_send_key *scsi_cmd;
4230
4231         scsi_cmd = (struct scsi_send_key *)&csio->cdb_io.cdb_bytes;
4232         bzero(scsi_cmd, sizeof(*scsi_cmd));
4233         scsi_cmd->opcode = SEND_KEY;
4234
4235         scsi_ulto2b(dxfer_len, scsi_cmd->param_len);
4236         scsi_cmd->agid_keyformat = (agid << RK_KF_AGID_SHIFT) |
4237                 (key_format & RK_KF_KEYFORMAT_MASK);
4238
4239         cam_fill_csio(csio,
4240                       retries,
4241                       cbfcnp,
4242                       /*flags*/ CAM_DIR_OUT,
4243                       tag_action,
4244                       /*data_ptr*/ data_ptr,
4245                       /*dxfer_len*/ dxfer_len,
4246                       sense_len,
4247                       sizeof(*scsi_cmd),
4248                       timeout);
4249 }
4250
4251
4252 void
4253 scsi_read_dvd_structure(struct ccb_scsiio *csio, u_int32_t retries,
4254                         void (*cbfcnp)(struct cam_periph *, union ccb *),
4255                         u_int8_t tag_action, u_int32_t address,
4256                         u_int8_t layer_number, u_int8_t format, u_int8_t agid,
4257                         u_int8_t *data_ptr, u_int32_t dxfer_len,
4258                         u_int8_t sense_len, u_int32_t timeout)
4259 {
4260         struct scsi_read_dvd_structure *scsi_cmd;
4261
4262         scsi_cmd = (struct scsi_read_dvd_structure *)&csio->cdb_io.cdb_bytes;
4263         bzero(scsi_cmd, sizeof(*scsi_cmd));
4264         scsi_cmd->opcode = READ_DVD_STRUCTURE;
4265
4266         scsi_ulto4b(address, scsi_cmd->address);
4267         scsi_cmd->layer_number = layer_number;
4268         scsi_cmd->format = format;
4269         scsi_ulto2b(dxfer_len, scsi_cmd->alloc_len);
4270         /* The AGID is the top two bits of this byte */
4271         scsi_cmd->agid = agid << 6;
4272
4273         cam_fill_csio(csio,
4274                       retries,
4275                       cbfcnp,
4276                       /*flags*/ CAM_DIR_IN,
4277                       tag_action,
4278                       /*data_ptr*/ data_ptr,
4279                       /*dxfer_len*/ dxfer_len,
4280                       sense_len,
4281                       sizeof(*scsi_cmd),
4282                       timeout);
4283 }