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 typedef enum {
  96         CD_FLAG_INVALID         = 0x0001,
  97         CD_FLAG_NEW_DISC        = 0x0002,
  98         CD_FLAG_DISC_LOCKED     = 0x0004,
  99         CD_FLAG_DISC_REMOVABLE  = 0x0008,
 100         CD_FLAG_CHANGER         = 0x0040,
 101         CD_FLAG_ACTIVE          = 0x0080,
 102         CD_FLAG_SCHED_ON_COMP   = 0x0100,
 103         CD_FLAG_RETRY_UA        = 0x0200,
 104         CD_FLAG_VALID_MEDIA     = 0x0400,
 105         CD_FLAG_VALID_TOC       = 0x0800,
 106         CD_FLAG_SCTX_INIT       = 0x1000,
 107         CD_FLAG_OPEN            = 0x2000
 108 } cd_flags;
 109
 110 typedef enum {
 111         CD_CCB_PROBE            = 0x01,
 112         CD_CCB_BUFFER_IO        = 0x02,
 113         CD_CCB_WAITING          = 0x03,
 114         CD_CCB_TYPE_MASK        = 0x0F,
 115         CD_CCB_RETRY_UA         = 0x10
 116 } cd_ccb_state;
 117
 118 typedef enum {
 119         CHANGER_TIMEOUT_SCHED           = 0x01,
 120         CHANGER_SHORT_TMOUT_SCHED       = 0x02,
 121         CHANGER_MANUAL_CALL             = 0x04,
 122         CHANGER_NEED_TIMEOUT            = 0x08
 123 } cd_changer_flags;
 124
 125 #define ccb_state ppriv_field0
 126 #define ccb_bp ppriv_ptr1
 127
 128 struct cd_tocdata {
 129         struct ioc_toc_header header;
 130         struct cd_toc_entry entries[100];
 131 };
 132
 133 struct cd_toc_single {
 134         struct ioc_toc_header header;
 135         struct cd_toc_entry entry;
 136 };
 137
 138 typedef enum {
 139         CD_STATE_PROBE,
 140         CD_STATE_NORMAL
 141 } cd_state;
 142
 143 struct cd_softc {
 144         cam_pinfo               pinfo;
 145         cd_state                state;
 146         volatile cd_flags       flags;
 147         struct bio_queue_head   bio_queue;
 148         LIST_HEAD(, ccb_hdr)    pending_ccbs;
 149         struct cd_params        params;
 150         union ccb               saved_ccb;
 151         cd_quirks               quirks;
 152         STAILQ_ENTRY(cd_softc)  changer_links;
 153         struct cdchanger        *changer;
 154         int                     bufs_left;
 155         struct cam_periph       *periph;
 156         int                     minimum_command_size;
 157         int                     outstanding_cmds;
 158         struct task             sysctl_task;
 159         struct sysctl_ctx_list  sysctl_ctx;
 160         struct sysctl_oid       *sysctl_tree;
 161         STAILQ_HEAD(, cd_mode_params)   mode_queue;
 162         struct cd_tocdata       toc;
 163         struct disk             *disk;
 164 };
 165
 166 struct cd_page_sizes {
 167         int page;
 168         int page_size;
 169 };
 170
 171 static struct cd_page_sizes cd_page_size_table[] =
 172 {
 173         { AUDIO_PAGE, sizeof(struct cd_audio_page)}
 174 };
 175
 176 struct cd_quirk_entry {
 177         struct scsi_inquiry_pattern inq_pat;
 178         cd_quirks quirks;
 179 };
 180
 181 /*
 182  * The changer quirk entries aren't strictly necessary.  Basically, what
 183  * they do is tell cdregister() up front that a device is a changer.
 184  * Otherwise, it will figure that fact out once it sees a LUN on the device
 185  * that is greater than 0.  If it is known up front that a device is a changer,
 186  * all I/O to the device will go through the changer scheduling routines, as
 187  * opposed to the "normal" CD code.
 188  *
 189  * NOTE ON 10_BYTE_ONLY quirks:  Any 10_BYTE_ONLY quirks MUST be because
 190  * your device hangs when it gets a 10 byte command.  Adding a quirk just
 191  * to get rid of the informative diagnostic message is not acceptable.  All
 192  * 10_BYTE_ONLY quirks must be documented in full in a PR (which should be
 193  * referenced in a comment along with the quirk) , and must be approved by
 194  * ken@FreeBSD.org.  Any quirks added that don't adhere to this policy may
 195  * be removed until the submitter can explain why they are needed.
 196  * 10_BYTE_ONLY quirks will be removed (as they will no longer be necessary)
 197  * when the CAM_NEW_TRAN_CODE work is done.
 198  */
 199 static struct cd_quirk_entry cd_quirk_table[] =
 200 {
 201         {
 202                 { T_CDROM, SIP_MEDIA_REMOVABLE, "NRC", "MBR-7", "*"},
 203                  /*quirks*/ CD_Q_CHANGER
 204         },
 205         {
 206                 { T_CDROM, SIP_MEDIA_REMOVABLE, "PIONEER", "CD-ROM DRM*",
 207                   "*"}, /* quirks */ CD_Q_CHANGER
 208         },
 209         {
 210                 { T_CDROM, SIP_MEDIA_REMOVABLE, "NAKAMICH", "MJ-*", "*"},
 211                  /* quirks */ CD_Q_CHANGER
 212         },
 213         {
 214                 { T_CDROM, SIP_MEDIA_REMOVABLE, "CHINON", "CD-ROM CDS-535","*"},
 215                 /* quirks */ CD_Q_BCD_TRACKS
 216         }
 217 };
 218
 219 static  disk_open_t     cdopen;
 220 static  disk_close_t    cdclose;
 221 static  disk_ioctl_t    cdioctl;
 222 static  disk_strategy_t cdstrategy;
 223
 224 static  periph_init_t   cdinit;
 225 static  periph_ctor_t   cdregister;
 226 static  periph_dtor_t   cdcleanup;
 227 static  periph_start_t  cdstart;
 228 static  periph_oninv_t  cdoninvalidate;
 229 static  void            cdasync(void *callback_arg, u_int32_t code,
 230                                 struct cam_path *path, void *arg);
 231 static  int             cdcmdsizesysctl(SYSCTL_HANDLER_ARGS);
 232 static  void            cdshorttimeout(void *arg);
 233 static  void            cdschedule(struct cam_periph *periph, int priority);
 234 static  void            cdrunchangerqueue(void *arg);
 235 static  void            cdchangerschedule(struct cd_softc *softc);
 236 static  int             cdrunccb(union ccb *ccb,
 237                                  int (*error_routine)(union ccb *ccb,
 238                                                       u_int32_t cam_flags,
 239                                                       u_int32_t sense_flags),
 240                                  u_int32_t cam_flags, u_int32_t sense_flags);
 241 static  union ccb       *cdgetccb(struct cam_periph *periph,
 242                                   u_int32_t priority);
 243 static  void            cddone(struct cam_periph *periph,
 244                                union ccb *start_ccb);
 245 static  union cd_pages  *cdgetpage(struct cd_mode_params *mode_params);
 246 static  int             cdgetpagesize(int page_num);
 247 static  void            cdprevent(struct cam_periph *periph, int action);
 248 static  int             cdcheckmedia(struct cam_periph *periph);
 249 static  int             cdsize(struct cam_periph *periph, u_int32_t *size);
 250 static  int             cd6byteworkaround(union ccb *ccb);
 251 static  int             cderror(union ccb *ccb, u_int32_t cam_flags,
 252                                 u_int32_t sense_flags);
 253 static  int             cdreadtoc(struct cam_periph *periph, u_int32_t mode,
 254                                   u_int32_t start, u_int8_t *data,
 255                                   u_int32_t len, u_int32_t sense_flags);
 256 static  int             cdgetmode(struct cam_periph *periph,
 257                                   struct cd_mode_params *data, u_int32_t page);
 258 static  int             cdsetmode(struct cam_periph *periph,
 259                                   struct cd_mode_params *data);
 260 static  int             cdplay(struct cam_periph *periph, u_int32_t blk,
 261                                u_int32_t len);
 262 static  int             cdreadsubchannel(struct cam_periph *periph,
 263                                          u_int32_t mode, u_int32_t format,
 264                                          int track,
 265                                          struct cd_sub_channel_info *data,
 266                                          u_int32_t len);
 267 static  int             cdplaymsf(struct cam_periph *periph, u_int32_t startm,
 268                                   u_int32_t starts, u_int32_t startf,
 269                                   u_int32_t endm, u_int32_t ends,
 270                                   u_int32_t endf);
 271 static  int             cdplaytracks(struct cam_periph *periph,
 272                                      u_int32_t strack, u_int32_t sindex,
 273                                      u_int32_t etrack, u_int32_t eindex);
 274 static  int             cdpause(struct cam_periph *periph, u_int32_t go);
 275 static  int             cdstopunit(struct cam_periph *periph, u_int32_t eject);
 276 static  int             cdstartunit(struct cam_periph *periph, int load);
 277 static  int             cdsetspeed(struct cam_periph *periph,
 278                                    u_int32_t rdspeed, u_int32_t wrspeed);
 279 static  int             cdreportkey(struct cam_periph *periph,
 280                                     struct dvd_authinfo *authinfo);
 281 static  int             cdsendkey(struct cam_periph *periph,
 282                                   struct dvd_authinfo *authinfo);
 283 static  int             cdreaddvdstructure(struct cam_periph *periph,
 284                                            struct dvd_struct *dvdstruct);
 285
 286 static struct periph_driver cddriver =
 287 {
 288         cdinit, "cd",
 289         TAILQ_HEAD_INITIALIZER(cddriver.units), /* generation */ 0
 290 };
 291
 292 PERIPHDRIVER_DECLARE(cd, cddriver);
 293
 294 #ifndef CD_DEFAULT_RETRY
 295 #define CD_DEFAULT_RETRY        4
 296 #endif
 297 #ifndef CHANGER_MIN_BUSY_SECONDS
 298 #define CHANGER_MIN_BUSY_SECONDS        5
 299 #endif
 300 #ifndef CHANGER_MAX_BUSY_SECONDS
 301 #define CHANGER_MAX_BUSY_SECONDS        15
 302 #endif
 303
 304 static int cd_retry_count = CD_DEFAULT_RETRY;
 305 static int changer_min_busy_seconds = CHANGER_MIN_BUSY_SECONDS;
 306 static int changer_max_busy_seconds = CHANGER_MAX_BUSY_SECONDS;
 307
 308 static SYSCTL_NODE(_kern_cam, OID_AUTO, cd, CTLFLAG_RD, 0, "CAM CDROM driver");
 309 static SYSCTL_NODE(_kern_cam_cd, OID_AUTO, changer, CTLFLAG_RD, 0,
 310     "CD Changer");
 311 SYSCTL_INT(_kern_cam_cd, OID_AUTO, retry_count, CTLFLAG_RW,
 312            &cd_retry_count, 0, "Normal I/O retry count");
 313 TUNABLE_INT("kern.cam.cd.retry_count", &cd_retry_count);
 314 SYSCTL_INT(_kern_cam_cd_changer, OID_AUTO, min_busy_seconds, CTLFLAG_RW,
 315            &changer_min_busy_seconds, 0, "Minimum changer scheduling quantum");
 316 TUNABLE_INT("kern.cam.cd.changer.min_busy_seconds", &changer_min_busy_seconds);
 317 SYSCTL_INT(_kern_cam_cd_changer, OID_AUTO, max_busy_seconds, CTLFLAG_RW,
 318            &changer_max_busy_seconds, 0, "Maximum changer scheduling quantum");
 319 TUNABLE_INT("kern.cam.cd.changer.max_busy_seconds", &changer_max_busy_seconds);
 320
 321 struct cdchanger {
 322         path_id_t                        path_id;
 323         target_id_t                      target_id;
 324         int                              num_devices;
 325         struct camq                      devq;
 326         struct timeval                   start_time;
 327         struct cd_softc                  *cur_device;
 328         struct callout                   short_handle;
 329         struct callout                   long_handle;
 330         volatile cd_changer_flags        flags;
 331         STAILQ_ENTRY(cdchanger)          changer_links;
 332         STAILQ_HEAD(chdevlist, cd_softc) chluns;
 333 };
 334
 335 static struct mtx changerq_mtx;
 336 static STAILQ_HEAD(changerlist, cdchanger) changerq;
 337 static int num_changers;
 338
 339 static MALLOC_DEFINE(M_SCSICD, "scsi_cd", "scsi_cd buffers");
 340
 341 static void
 342 cdinit(void)
 343 {
 344         cam_status status;
 345
 346         mtx_init(&changerq_mtx, "cdchangerq", "SCSI CD Changer List", MTX_DEF);
 347         STAILQ_INIT(&changerq);
 348
 349         /*
 350          * Install a global async callback.  This callback will
 351          * receive async callbacks like "new device found".
 352          */
 353         status = xpt_register_async(AC_FOUND_DEVICE, cdasync, NULL, NULL);
 354
 355         if (status != CAM_REQ_CMP) {
 356                 printf("cd: Failed to attach master async callback "
 357                        "due to status 0x%x!\n", status);
 358         }
 359 }
 360
 361 static void
 362 cdoninvalidate(struct cam_periph *periph)
 363 {
 364         struct cd_softc *softc;
 365
 366         softc = (struct cd_softc *)periph->softc;
 367
 368         /*
 369          * De-register any async callbacks.
 370          */
 371         xpt_register_async(0, cdasync, periph, periph->path);
 372
 373         softc->flags |= CD_FLAG_INVALID;
 374
 375         /*
 376          * Return all queued I/O with ENXIO.
 377          * XXX Handle any transactions queued to the card
 378          *     with XPT_ABORT_CCB.
 379          */
 380         bioq_flush(&softc->bio_queue, NULL, ENXIO);
 381
 382         /*
 383          * If this device is part of a changer, and it was scheduled
 384          * to run, remove it from the run queue since we just nuked
 385          * all of its scheduled I/O.
 386          */
 387         if ((softc->flags & CD_FLAG_CHANGER)
 388          && (softc->pinfo.index != CAM_UNQUEUED_INDEX))
 389                 camq_remove(&softc->changer->devq, softc->pinfo.index);
 390
 391         disk_gone(softc->disk);
 392         xpt_print(periph->path, "lost device\n");
 393 }
 394
 395 static void
 396 cdcleanup(struct cam_periph *periph)
 397 {
 398         struct cd_softc *softc;
 399
 400         softc = (struct cd_softc *)periph->softc;
 401
 402         xpt_print(periph->path, "removing device entry\n");
 403
 404         /*
 405          * In the queued, non-active case, the device in question
 406          * has already been removed from the changer run queue.  Since this
 407          * device is active, we need to de-activate it, and schedule
 408          * another device to run.  (if there is another one to run)
 409          */
 410         if ((softc->flags & CD_FLAG_CHANGER)
 411          && (softc->flags & CD_FLAG_ACTIVE)) {
 412
 413                 /*
 414                  * The purpose of the short timeout is soley to determine
 415                  * whether the current device has finished or not.  Well,
 416                  * since we're removing the active device, we know that it
 417                  * is finished.  So, get rid of the short timeout.
 418                  * Otherwise, if we're in the time period before the short
 419                  * timeout fires, and there are no other devices in the
 420                  * queue to run, there won't be any other device put in the
 421                  * active slot.  i.e., when we call cdrunchangerqueue()
 422                  * below, it won't do anything.  Then, when the short
 423                  * timeout fires, it'll look at the "current device", which
 424                  * we are free below, and possibly panic the kernel on a
 425                  * bogus pointer reference.
 426                  *
 427                  * The long timeout doesn't really matter, since we
 428                  * decrement the qfrozen_cnt to indicate that there is
 429                  * nothing in the active slot now.  Therefore, there won't
 430                  * be any bogus pointer references there.
 431                  */
 432                 if (softc->changer->flags & CHANGER_SHORT_TMOUT_SCHED) {
 433                         callout_stop(&softc->changer->short_handle);
 434                         softc->changer->flags &= ~CHANGER_SHORT_TMOUT_SCHED;
 435                 }
 436                 softc->changer->devq.qfrozen_cnt[0]--;
 437                 softc->changer->flags |= CHANGER_MANUAL_CALL;
 438                 cdrunchangerqueue(softc->changer);
 439         }
 440
 441         /*
 442          * If we're removing the last device on the changer, go ahead and
 443          * remove the changer device structure.
 444          */
 445         if ((softc->flags & CD_FLAG_CHANGER)
 446          && (--softc->changer->num_devices == 0)) {
 447
 448                 /*
 449                  * Theoretically, there shouldn't be any timeouts left, but
 450                  * I'm not completely sure that that will be the case.  So,
 451                  * it won't hurt to check and see if there are any left.
 452                  */
 453                 if (softc->changer->flags & CHANGER_TIMEOUT_SCHED) {
 454                         callout_stop(&softc->changer->long_handle);
 455                         softc->changer->flags &= ~CHANGER_TIMEOUT_SCHED;
 456                 }
 457
 458                 if (softc->changer->flags & CHANGER_SHORT_TMOUT_SCHED) {
 459                         callout_stop(&softc->changer->short_handle);
 460                         softc->changer->flags &= ~CHANGER_SHORT_TMOUT_SCHED;
 461                 }
 462
 463                 mtx_lock(&changerq_mtx);
 464                 STAILQ_REMOVE(&changerq, softc->changer, cdchanger,
 465                               changer_links);
 466                 num_changers--;
 467                 mtx_unlock(&changerq_mtx);
 468                 xpt_print(periph->path, "removing changer entry\n");
 469                 free(softc->changer, M_DEVBUF);
 470         }
 471         cam_periph_unlock(periph);
 472         if ((softc->flags & CD_FLAG_SCTX_INIT) != 0
 473             && sysctl_ctx_free(&softc->sysctl_ctx) != 0) {
 474                 xpt_print(periph->path, "can't remove sysctl context\n");
 475         }
 476
 477         disk_destroy(softc->disk);
 478         free(softc, M_DEVBUF);
 479         cam_periph_lock(periph);
 480 }
 481
 482 static void
 483 cdasync(void *callback_arg, u_int32_t code,
 484         struct cam_path *path, void *arg)
 485 {
 486         struct cam_periph *periph;
 487
 488         periph = (struct cam_periph *)callback_arg;
 489         switch (code) {
 490         case AC_FOUND_DEVICE:
 491         {
 492                 struct ccb_getdev *cgd;
 493                 cam_status status;
 494
 495                 cgd = (struct ccb_getdev *)arg;
 496                 if (cgd == NULL)
 497                         break;
 498
 499                 if (cgd->protocol != PROTO_SCSI)
 500                         break;
 501
 502                 if (SID_TYPE(&cgd->inq_data) != T_CDROM
 503                     && SID_TYPE(&cgd->inq_data) != T_WORM)
 504                         break;
 505
 506                 /*
 507                  * Allocate a peripheral instance for
 508                  * this device and start the probe
 509                  * process.
 510                  */
 511                 status = cam_periph_alloc(cdregister, cdoninvalidate,
 512                                           cdcleanup, cdstart,
 513                                           "cd", CAM_PERIPH_BIO,
 514                                           cgd->ccb_h.path, cdasync,
 515                                           AC_FOUND_DEVICE, cgd);
 516
 517                 if (status != CAM_REQ_CMP
 518                  && status != CAM_REQ_INPROG)
 519                         printf("cdasync: Unable to attach new device "
 520                                "due to status 0x%x\n", status);
 521
 522                 break;
 523         }
 524         case AC_SENT_BDR:
 525         case AC_BUS_RESET:
 526         {
 527                 struct cd_softc *softc;
 528                 struct ccb_hdr *ccbh;
 529
 530                 softc = (struct cd_softc *)periph->softc;
 531                 /*
 532                  * Don't fail on the expected unit attention
 533                  * that will occur.
 534                  */
 535                 softc->flags |= CD_FLAG_RETRY_UA;
 536                 LIST_FOREACH(ccbh, &softc->pending_ccbs, periph_links.le)
 537                         ccbh->ccb_state |= CD_CCB_RETRY_UA;
 538                 /* FALLTHROUGH */
 539         }
 540         default:
 541                 cam_periph_async(periph, code, path, arg);
 542                 break;
 543         }
 544 }
 545
 546 static void
 547 cdsysctlinit(void *context, int pending)
 548 {
 549         struct cam_periph *periph;
 550         struct cd_softc *softc;
 551         char tmpstr[80], tmpstr2[80];
 552
 553         periph = (struct cam_periph *)context;
 554         if (cam_periph_acquire(periph) != CAM_REQ_CMP)
 555                 return;
 556
 557         softc = (struct cd_softc *)periph->softc;
 558         snprintf(tmpstr, sizeof(tmpstr), "CAM CD unit %d", periph->unit_number);
 559         snprintf(tmpstr2, sizeof(tmpstr2), "%d", periph->unit_number);
 560
 561         sysctl_ctx_init(&softc->sysctl_ctx);
 562         softc->flags |= CD_FLAG_SCTX_INIT;
 563         softc->sysctl_tree = SYSCTL_ADD_NODE(&softc->sysctl_ctx,
 564                 SYSCTL_STATIC_CHILDREN(_kern_cam_cd), OID_AUTO,
 565                 tmpstr2, CTLFLAG_RD, 0, tmpstr);
 566
 567         if (softc->sysctl_tree == NULL) {
 568                 printf("cdsysctlinit: unable to allocate sysctl tree\n");
 569                 cam_periph_release(periph);
 570                 return;
 571         }
 572
 573         /*
 574          * Now register the sysctl handler, so the user can the value on
 575          * the fly.
 576          */
 577         SYSCTL_ADD_PROC(&softc->sysctl_ctx,SYSCTL_CHILDREN(softc->sysctl_tree),
 578                 OID_AUTO, "minimum_cmd_size", CTLTYPE_INT | CTLFLAG_RW,
 579                 &softc->minimum_command_size, 0, cdcmdsizesysctl, "I",
 580                 "Minimum CDB size");
 581
 582         cam_periph_release(periph);
 583 }
 584
 585 /*
 586  * We have a handler function for this so we can check the values when the
 587  * user sets them, instead of every time we look at them.
 588  */
 589 static int
 590 cdcmdsizesysctl(SYSCTL_HANDLER_ARGS)
 591 {
 592         int error, value;
 593
 594         value = *(int *)arg1;
 595
 596         error = sysctl_handle_int(oidp, &value, 0, req);
 597
 598         if ((error != 0)
 599          || (req->newptr == NULL))
 600                 return (error);
 601
 602         /*
 603          * The only real values we can have here are 6 or 10.  I don't
 604          * really forsee having 12 be an option at any time in the future.
 605          * So if the user sets something less than or equal to 6, we'll set
 606          * it to 6.  If he sets something greater than 6, we'll set it to 10.
 607          *
 608          * I suppose we could just return an error here for the wrong values,
 609          * but I don't think it's necessary to do so, as long as we can
 610          * determine the user's intent without too much trouble.
 611          */
 612         if (value < 6)
 613                 value = 6;
 614         else if (value > 6)
 615                 value = 10;
 616
 617         *(int *)arg1 = value;
 618
 619         return (0);
 620 }
 621
 622 static cam_status
 623 cdregister(struct cam_periph *periph, void *arg)
 624 {
 625         struct cd_softc *softc;
 626         struct ccb_pathinq cpi;
 627         struct ccb_getdev *cgd;
 628         char tmpstr[80];
 629         caddr_t match;
 630
 631         cgd = (struct ccb_getdev *)arg;
 632         if (periph == NULL) {
 633                 printf("cdregister: periph was NULL!!\n");
 634                 return(CAM_REQ_CMP_ERR);
 635         }
 636         if (cgd == NULL) {
 637                 printf("cdregister: no getdev CCB, can't register device\n");
 638                 return(CAM_REQ_CMP_ERR);
 639         }
 640
 641         softc = (struct cd_softc *)malloc(sizeof(*softc),M_DEVBUF,
 642             M_NOWAIT | M_ZERO);
 643         if (softc == NULL) {
 644                 printf("cdregister: Unable to probe new device. "
 645                        "Unable to allocate softc\n");
 646                 return(CAM_REQ_CMP_ERR);
 647         }
 648
 649         LIST_INIT(&softc->pending_ccbs);
 650         STAILQ_INIT(&softc->mode_queue);
 651         softc->state = CD_STATE_PROBE;
 652         bioq_init(&softc->bio_queue);
 653         if (SID_IS_REMOVABLE(&cgd->inq_data))
 654                 softc->flags |= CD_FLAG_DISC_REMOVABLE;
 655
 656         periph->softc = softc;
 657         softc->periph = periph;
 658
 659         /*
 660          * See if this device has any quirks.
 661          */
 662         match = cam_quirkmatch((caddr_t)&cgd->inq_data,
 663                                (caddr_t)cd_quirk_table,
 664                                sizeof(cd_quirk_table)/sizeof(*cd_quirk_table),
 665                                sizeof(*cd_quirk_table), scsi_inquiry_match);
 666
 667         if (match != NULL)
 668                 softc->quirks = ((struct cd_quirk_entry *)match)->quirks;
 669         else
 670                 softc->quirks = CD_Q_NONE;
 671
 672         /* Check if the SIM does not want 6 byte commands */
 673         bzero(&cpi, sizeof(cpi));
 674         xpt_setup_ccb(&cpi.ccb_h, periph->path, CAM_PRIORITY_NORMAL);
 675         cpi.ccb_h.func_code = XPT_PATH_INQ;
 676         xpt_action((union ccb *)&cpi);
 677         if (cpi.ccb_h.status == CAM_REQ_CMP && (cpi.hba_misc & PIM_NO_6_BYTE))
 678                 softc->quirks |= CD_Q_10_BYTE_ONLY;
 679
 680         TASK_INIT(&softc->sysctl_task, 0, cdsysctlinit, periph);
 681
 682         /* The default is 6 byte commands, unless quirked otherwise */
 683         if (softc->quirks & CD_Q_10_BYTE_ONLY)
 684                 softc->minimum_command_size = 10;
 685         else
 686                 softc->minimum_command_size = 6;
 687
 688         /*
 689          * Refcount and block open attempts until we are setup
 690          * Can't block
 691          */
 692         (void)cam_periph_hold(periph, PRIBIO);
 693         cam_periph_unlock(periph);
 694         /*
 695          * Load the user's default, if any.
 696          */
 697         snprintf(tmpstr, sizeof(tmpstr), "kern.cam.cd.%d.minimum_cmd_size",
 698                  periph->unit_number);
 699         TUNABLE_INT_FETCH(tmpstr, &softc->minimum_command_size);
 700
 701         /* 6 and 10 are the only permissible values here. */
 702         if (softc->minimum_command_size < 6)
 703                 softc->minimum_command_size = 6;
 704         else if (softc->minimum_command_size > 6)
 705                 softc->minimum_command_size = 10;
 706
 707         /*
 708          * We need to register the statistics structure for this device,
 709          * but we don't have the blocksize yet for it.  So, we register
 710          * the structure and indicate that we don't have the blocksize
 711          * yet.  Unlike other SCSI peripheral drivers, we explicitly set
 712          * the device type here to be CDROM, rather than just ORing in
 713          * the device type.  This is because this driver can attach to either
 714          * CDROM or WORM devices, and we want this peripheral driver to
 715          * show up in the devstat list as a CD peripheral driver, not a
 716          * WORM peripheral driver.  WORM drives will also have the WORM
 717          * driver attached to them.
 718          */
 719         softc->disk = disk_alloc();
 720         softc->disk->d_devstat = devstat_new_entry("cd",
 721                           periph->unit_number, 0,
 722                           DEVSTAT_BS_UNAVAILABLE,
 723                           DEVSTAT_TYPE_CDROM |
 724                           XPORT_DEVSTAT_TYPE(cpi.transport),
 725                           DEVSTAT_PRIORITY_CD);
 726         softc->disk->d_open = cdopen;
 727         softc->disk->d_close = cdclose;
 728         softc->disk->d_strategy = cdstrategy;
 729         softc->disk->d_ioctl = cdioctl;
 730         softc->disk->d_name = "cd";
 731         cam_strvis(softc->disk->d_descr, cgd->inq_data.vendor,
 732             sizeof(cgd->inq_data.vendor), sizeof(softc->disk->d_descr));
 733         strlcat(softc->disk->d_descr, " ", sizeof(softc->disk->d_descr));
 734         cam_strvis(&softc->disk->d_descr[strlen(softc->disk->d_descr)],
 735             cgd->inq_data.product, sizeof(cgd->inq_data.product),
 736             sizeof(softc->disk->d_descr) - strlen(softc->disk->d_descr));
 737         softc->disk->d_unit = periph->unit_number;
 738         softc->disk->d_drv1 = periph;
 739         if (cpi.maxio == 0)
 740                 softc->disk->d_maxsize = DFLTPHYS;      /* traditional default */
 741         else if (cpi.maxio > MAXPHYS)
 742                 softc->disk->d_maxsize = MAXPHYS;       /* for safety */
 743         else
 744                 softc->disk->d_maxsize = cpi.maxio;
 745         softc->disk->d_flags = 0;
 746         softc->disk->d_hba_vendor = cpi.hba_vendor;
 747         softc->disk->d_hba_device = cpi.hba_device;
 748         softc->disk->d_hba_subvendor = cpi.hba_subvendor;
 749         softc->disk->d_hba_subdevice = cpi.hba_subdevice;
 750         disk_create(softc->disk, DISK_VERSION);
 751         cam_periph_lock(periph);
 752
 753         /*
 754          * Add an async callback so that we get
 755          * notified if this device goes away.
 756          */
 757         xpt_register_async(AC_SENT_BDR | AC_BUS_RESET | AC_LOST_DEVICE,
 758                            cdasync, periph, periph->path);
 759
 760         /*
 761          * If the target lun is greater than 0, we most likely have a CD
 762          * changer device.  Check the quirk entries as well, though, just
 763          * in case someone has a CD tower with one lun per drive or
 764          * something like that.  Also, if we know up front that a
 765          * particular device is a changer, we can mark it as such starting
 766          * with lun 0, instead of lun 1.  It shouldn't be necessary to have
 767          * a quirk entry to define something as a changer, however.
 768          */
 769         if (((cgd->ccb_h.target_lun > 0)
 770           && ((softc->quirks & CD_Q_NO_CHANGER) == 0))
 771          || ((softc->quirks & CD_Q_CHANGER) != 0)) {
 772                 struct cdchanger *nchanger;
 773                 struct cam_periph *nperiph;
 774                 struct cam_path *path;
 775                 cam_status status;
 776                 int found;
 777
 778                 /* Set the changer flag in the current device's softc */
 779                 softc->flags |= CD_FLAG_CHANGER;
 780
 781                 /*
 782                  * Now, look around for an existing changer device with the
 783                  * same path and target ID as the current device.
 784                  */
 785                 mtx_lock(&changerq_mtx);
 786                 for (found = 0,
 787                      nchanger = (struct cdchanger *)STAILQ_FIRST(&changerq);
 788                      nchanger != NULL;
 789                      nchanger = STAILQ_NEXT(nchanger, changer_links)){
 790                         if ((nchanger->path_id == cgd->ccb_h.path_id)
 791                          && (nchanger->target_id == cgd->ccb_h.target_id)) {
 792                                 found = 1;
 793                                 break;
 794                         }
 795                 }
 796                 mtx_unlock(&changerq_mtx);
 797
 798                 /*
 799                  * If we found a matching entry, just add this device to
 800                  * the list of devices on this changer.
 801                  */
 802                 if (found == 1) {
 803                         struct chdevlist *chlunhead;
 804
 805                         chlunhead = &nchanger->chluns;
 806
 807                         /*
 808                          * XXX KDM look at consolidating this code with the
 809                          * code below in a separate function.
 810                          */
 811
 812                         /*
 813                          * Create a path with lun id 0, and see if we can
 814                          * find a matching device
 815                          */
 816                         status = xpt_create_path(&path, /*periph*/ periph,
 817                                                  cgd->ccb_h.path_id,
 818                                                  cgd->ccb_h.target_id, 0);
 819
 820                         if ((status == CAM_REQ_CMP)
 821                          && ((nperiph = cam_periph_find(path, "cd")) != NULL)){
 822                                 struct cd_softc *nsoftc;
 823
 824                                 nsoftc = (struct cd_softc *)nperiph->softc;
 825
 826                                 if ((nsoftc->flags & CD_FLAG_CHANGER) == 0){
 827                                         nsoftc->flags |= CD_FLAG_CHANGER;
 828                                         nchanger->num_devices++;
 829                                         if (camq_resize(&nchanger->devq,
 830                                            nchanger->num_devices)!=CAM_REQ_CMP){
 831                                                 printf("cdregister: "
 832                                                        "camq_resize "
 833                                                        "failed, changer "
 834                                                        "support may "
 835                                                        "be messed up\n");
 836                                         }
 837                                         nsoftc->changer = nchanger;
 838                                         nsoftc->pinfo.index =CAM_UNQUEUED_INDEX;
 839
 840                                         STAILQ_INSERT_TAIL(&nchanger->chluns,
 841                                                           nsoftc,changer_links);
 842                                 }
 843                                 xpt_free_path(path);
 844                         } else if (status == CAM_REQ_CMP)
 845                                 xpt_free_path(path);
 846                         else {
 847                                 printf("cdregister: unable to allocate path\n"
 848                                        "cdregister: changer support may be "
 849                                        "broken\n");
 850                         }
 851
 852                         nchanger->num_devices++;
 853
 854                         softc->changer = nchanger;
 855                         softc->pinfo.index = CAM_UNQUEUED_INDEX;
 856
 857                         if (camq_resize(&nchanger->devq,
 858                             nchanger->num_devices) != CAM_REQ_CMP) {
 859                                 printf("cdregister: camq_resize "
 860                                        "failed, changer support may "
 861                                        "be messed up\n");
 862                         }
 863
 864                         STAILQ_INSERT_TAIL(chlunhead, softc, changer_links);
 865                 }
 866                 /*
 867                  * In this case, we don't already have an entry for this
 868                  * particular changer, so we need to create one, add it to
 869                  * the queue, and queue this device on the list for this
 870                  * changer.  Before we queue this device, however, we need
 871                  * to search for lun id 0 on this target, and add it to the
 872                  * queue first, if it exists.  (and if it hasn't already
 873                  * been marked as part of the changer.)
 874                  */
 875                 else {
 876                         nchanger = malloc(sizeof(struct cdchanger),
 877                                 M_DEVBUF, M_NOWAIT | M_ZERO);
 878                         if (nchanger == NULL) {
 879                                 softc->flags &= ~CD_FLAG_CHANGER;
 880                                 printf("cdregister: unable to malloc "
 881                                        "changer structure\ncdregister: "
 882                                        "changer support disabled\n");
 883
 884                                 /*
 885                                  * Yes, gotos can be gross but in this case
 886                                  * I think it's justified..
 887                                  */
 888                                 goto cdregisterexit;
 889                         }
 890                         if (camq_init(&nchanger->devq, 1) != 0) {
 891                                 softc->flags &= ~CD_FLAG_CHANGER;
 892                                 printf("cdregister: changer support "
 893                                        "disabled\n");
 894                                 goto cdregisterexit;
 895                         }
 896
 897                         nchanger->path_id = cgd->ccb_h.path_id;
 898                         nchanger->target_id = cgd->ccb_h.target_id;
 899
 900                         /* this is superfluous, but it makes things clearer */
 901                         nchanger->num_devices = 0;
 902
 903                         STAILQ_INIT(&nchanger->chluns);
 904
 905                         callout_init_mtx(&nchanger->long_handle,
 906                             periph->sim->mtx, 0);
 907                         callout_init_mtx(&nchanger->short_handle,
 908                             periph->sim->mtx, 0);
 909
 910                         mtx_lock(&changerq_mtx);
 911                         num_changers++;
 912                         STAILQ_INSERT_TAIL(&changerq, nchanger,
 913                                            changer_links);
 914                         mtx_unlock(&changerq_mtx);
 915
 916                         /*
 917                          * Create a path with lun id 0, and see if we can
 918                          * find a matching device
 919                          */
 920                         status = xpt_create_path(&path, /*periph*/ periph,
 921                                                  cgd->ccb_h.path_id,
 922                                                  cgd->ccb_h.target_id, 0);
 923
 924                         /*
 925                          * If we were able to allocate the path, and if we
 926                          * find a matching device and it isn't already
 927                          * marked as part of a changer, then we add it to
 928                          * the current changer.
 929                          */
 930                         if ((status == CAM_REQ_CMP)
 931                          && ((nperiph = cam_periph_find(path, "cd")) != NULL)
 932                          && ((((struct cd_softc *)periph->softc)->flags &
 933                                CD_FLAG_CHANGER) == 0)) {
 934                                 struct cd_softc *nsoftc;
 935
 936                                 nsoftc = (struct cd_softc *)nperiph->softc;
 937
 938                                 nsoftc->flags |= CD_FLAG_CHANGER;
 939                                 nchanger->num_devices++;
 940                                 if (camq_resize(&nchanger->devq,
 941                                     nchanger->num_devices) != CAM_REQ_CMP) {
 942                                         printf("cdregister: camq_resize "
 943                                                "failed, changer support may "
 944                                                "be messed up\n");
 945                                 }
 946                                 nsoftc->changer = nchanger;
 947                                 nsoftc->pinfo.index = CAM_UNQUEUED_INDEX;
 948
 949                                 STAILQ_INSERT_TAIL(&nchanger->chluns,
 950                                                    nsoftc, changer_links);
 951                                 xpt_free_path(path);
 952                         } else if (status == CAM_REQ_CMP)
 953                                 xpt_free_path(path);
 954                         else {
 955                                 printf("cdregister: unable to allocate path\n"
 956                                        "cdregister: changer support may be "
 957                                        "broken\n");
 958                         }
 959
 960                         softc->changer = nchanger;
 961                         softc->pinfo.index = CAM_UNQUEUED_INDEX;
 962                         nchanger->num_devices++;
 963                         if (camq_resize(&nchanger->devq,
 964                             nchanger->num_devices) != CAM_REQ_CMP) {
 965                                 printf("cdregister: camq_resize "
 966                                        "failed, changer support may "
 967                                        "be messed up\n");
 968                         }
 969                         STAILQ_INSERT_TAIL(&nchanger->chluns, softc,
 970                                            changer_links);
 971                 }
 972         }
 973
 974 cdregisterexit:
 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_len(sense,
1712                                             csio->sense_len - csio->sense_resid,
1713                                             &error_code, &sense_key, &asc,
1714                                             &ascq, /*show_errors*/ 1);
1715                                 }
1716                                 /*
1717                                  * Attach to anything that claims to be a
1718                                  * CDROM or WORM device, as long as it
1719                                  * doesn't return a "Logical unit not
1720                                  * supported" (0x25) error.
1721                                  */
1722                                 if ((have_sense) && (asc != 0x25)
1723                                  && (error_code == SSD_CURRENT_ERROR)) {
1724                                         const char *sense_key_desc;
1725                                         const char *asc_desc;
1726
1727                                         scsi_sense_desc(sense_key, asc, ascq,
1728                                                         &cgd.inq_data,
1729                                                         &sense_key_desc,
1730                                                         &asc_desc);
1731                                         snprintf(announce_buf,
1732                                             sizeof(announce_buf),
1733                                                 "Attempt to query device "
1734                                                 "size failed: %s, %s",
1735                                                 sense_key_desc,
1736                                                 asc_desc);
1737                                 } else if ((have_sense == 0)
1738                                       && ((status & CAM_STATUS_MASK) ==
1739                                            CAM_SCSI_STATUS_ERROR)
1740                                       && (csio->scsi_status ==
1741                                           SCSI_STATUS_BUSY)) {
1742                                         snprintf(announce_buf,
1743                                             sizeof(announce_buf),
1744                                             "Attempt to query device "
1745                                             "size failed: SCSI Status: %s",
1746                                             scsi_status_string(csio));
1747                                 } else if (SID_TYPE(&cgd.inq_data) == T_CDROM) {
1748                                         /*
1749                                          * We only print out an error for
1750                                          * CDROM type devices.  For WORM
1751                                          * devices, we don't print out an
1752                                          * error since a few WORM devices
1753                                          * don't support CDROM commands.
1754                                          * If we have sense information, go
1755                                          * ahead and print it out.
1756                                          * Otherwise, just say that we
1757                                          * couldn't attach.
1758                                          */
1759
1760                                         /*
1761                                          * Just print out the error, not
1762                                          * the full probe message, when we
1763                                          * don't attach.
1764                                          */
1765                                         if (have_sense)
1766                                                 scsi_sense_print(
1767                                                         &done_ccb->csio);
1768                                         else {
1769                                                 xpt_print(periph->path,
1770                                                     "got CAM status %#x\n",
1771                                                     done_ccb->ccb_h.status);
1772                                         }
1773                                         xpt_print(periph->path, "fatal error, "
1774                                             "failed to attach to device\n");
1775                                         /*
1776                                          * Invalidate this peripheral.
1777                                          */
1778                                         cam_periph_invalidate(periph);
1779
1780                                         announce_buf[0] = '\0';
1781                                 } else {
1782
1783                                         /*
1784                                          * Invalidate this peripheral.
1785                                          */
1786                                         cam_periph_invalidate(periph);
1787                                         announce_buf[0] = '\0';
1788                                 }
1789                         }
1790                 }
1791                 free(rdcap, M_SCSICD);
1792                 if (announce_buf[0] != '\0') {
1793                         xpt_announce_periph(periph, announce_buf);
1794                         if (softc->flags & CD_FLAG_CHANGER)
1795                                 cdchangerschedule(softc);
1796                         /*
1797                          * Create our sysctl variables, now that we know
1798                          * we have successfully attached.
1799                          */
1800                         taskqueue_enqueue(taskqueue_thread,&softc->sysctl_task);
1801                 }
1802                 softc->state = CD_STATE_NORMAL;
1803                 /*
1804                  * Since our peripheral may be invalidated by an error
1805                  * above or an external event, we must release our CCB
1806                  * before releasing the probe lock on the peripheral.
1807                  * The peripheral will only go away once the last lock
1808                  * is removed, and we need it around for the CCB release
1809                  * operation.
1810                  */
1811                 xpt_release_ccb(done_ccb);
1812                 cam_periph_unhold(periph);
1813                 return;
1814         }
1815         case CD_CCB_WAITING:
1816         {
1817                 /* Caller will release the CCB */
1818                 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE,
1819                           ("trying to wakeup ccbwait\n"));
1820
1821                 wakeup(&done_ccb->ccb_h.cbfcnp);
1822                 return;
1823         }
1824         default:
1825                 break;
1826         }
1827         xpt_release_ccb(done_ccb);
1828 }
1829
1830 static union cd_pages *
1831 cdgetpage(struct cd_mode_params *mode_params)
1832 {
1833         union cd_pages *page;
1834
1835         if (mode_params->cdb_size == 10)
1836                 page = (union cd_pages *)find_mode_page_10(
1837                         (struct scsi_mode_header_10 *)mode_params->mode_buf);
1838         else
1839                 page = (union cd_pages *)find_mode_page_6(
1840                         (struct scsi_mode_header_6 *)mode_params->mode_buf);
1841
1842         return (page);
1843 }
1844
1845 static int
1846 cdgetpagesize(int page_num)
1847 {
1848         int i;
1849
1850         for (i = 0; i < (sizeof(cd_page_size_table)/
1851              sizeof(cd_page_size_table[0])); i++) {
1852                 if (cd_page_size_table[i].page == page_num)
1853                         return (cd_page_size_table[i].page_size);
1854         }
1855
1856         return (-1);
1857 }
1858
1859 static int
1860 cdioctl(struct disk *dp, u_long cmd, void *addr, int flag, struct thread *td)
1861 {
1862
1863         struct  cam_periph *periph;
1864         struct  cd_softc *softc;
1865         int     nocopyout, error = 0;
1866
1867         periph = (struct cam_periph *)dp->d_drv1;
1868         if (periph == NULL)
1869                 return(ENXIO);
1870
1871         cam_periph_lock(periph);
1872
1873         softc = (struct cd_softc *)periph->softc;
1874
1875         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE,
1876             ("cdioctl(%#lx)\n", cmd));
1877
1878         if ((error = cam_periph_hold(periph, PRIBIO | PCATCH)) != 0) {
1879                 cam_periph_unlock(periph);
1880                 cam_periph_release(periph);
1881                 return (error);
1882         }
1883
1884         /*
1885          * If we don't have media loaded, check for it.  If still don't
1886          * have media loaded, we can only do a load or eject.
1887          *
1888          * We only care whether media is loaded if this is a cd-specific ioctl
1889          * (thus the IOCGROUP check below).  Note that this will break if
1890          * anyone adds any ioctls into the switch statement below that don't
1891          * have their ioctl group set to 'c'.
1892          */
1893         if (((softc->flags & CD_FLAG_VALID_MEDIA) == 0)
1894          && ((cmd != CDIOCCLOSE)
1895           && (cmd != CDIOCEJECT))
1896          && (IOCGROUP(cmd) == 'c')) {
1897                 error = cdcheckmedia(periph);
1898                 if (error != 0) {
1899                         cam_periph_unhold(periph);
1900                         cam_periph_unlock(periph);
1901                         return (error);
1902                 }
1903         }
1904         /*
1905          * Drop the lock here so later mallocs can use WAITOK.  The periph
1906          * is essentially locked still with the cam_periph_hold call above.
1907          */
1908         cam_periph_unlock(periph);
1909
1910         nocopyout = 0;
1911         switch (cmd) {
1912
1913         case CDIOCPLAYTRACKS:
1914                 {
1915                         struct ioc_play_track *args
1916                             = (struct ioc_play_track *) addr;
1917                         struct cd_mode_params params;
1918                         union cd_pages *page;
1919
1920                         params.alloc_len = sizeof(union cd_mode_data_6_10);
1921                         params.mode_buf = malloc(params.alloc_len, M_SCSICD,
1922                                                  M_WAITOK | M_ZERO);
1923
1924                         cam_periph_lock(periph);
1925                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
1926                                   ("trying to do CDIOCPLAYTRACKS\n"));
1927
1928                         error = cdgetmode(periph, &params, AUDIO_PAGE);
1929                         if (error) {
1930                                 free(params.mode_buf, M_SCSICD);
1931                                 cam_periph_unlock(periph);
1932                                 break;
1933                         }
1934                         page = cdgetpage(&params);
1935
1936                         page->audio.flags &= ~CD_PA_SOTC;
1937                         page->audio.flags |= CD_PA_IMMED;
1938                         error = cdsetmode(periph, &params);
1939                         free(params.mode_buf, M_SCSICD);
1940                         if (error) {
1941                                 cam_periph_unlock(periph);
1942                                 break;
1943                         }
1944
1945                         /*
1946                          * This was originally implemented with the PLAY
1947                          * AUDIO TRACK INDEX command, but that command was
1948                          * deprecated after SCSI-2.  Most (all?) SCSI CDROM
1949                          * drives support it but ATAPI and ATAPI-derivative
1950                          * drives don't seem to support it.  So we keep a
1951                          * cache of the table of contents and translate
1952                          * track numbers to MSF format.
1953                          */
1954                         if (softc->flags & CD_FLAG_VALID_TOC) {
1955                                 union msf_lba *sentry, *eentry;
1956                                 int st, et;
1957
1958                                 if (args->end_track <
1959                                     softc->toc.header.ending_track + 1)
1960                                         args->end_track++;
1961                                 if (args->end_track >
1962                                     softc->toc.header.ending_track + 1)
1963                                         args->end_track =
1964                                             softc->toc.header.ending_track + 1;
1965                                 st = args->start_track -
1966                                         softc->toc.header.starting_track;
1967                                 et = args->end_track -
1968                                         softc->toc.header.starting_track;
1969                                 if ((st < 0)
1970                                  || (et < 0)
1971                                  || (st > (softc->toc.header.ending_track -
1972                                      softc->toc.header.starting_track))) {
1973                                         error = EINVAL;
1974                                         break;
1975                                 }
1976                                 sentry = &softc->toc.entries[st].addr;
1977                                 eentry = &softc->toc.entries[et].addr;
1978                                 error = cdplaymsf(periph,
1979                                                   sentry->msf.minute,
1980                                                   sentry->msf.second,
1981                                                   sentry->msf.frame,
1982                                                   eentry->msf.minute,
1983                                                   eentry->msf.second,
1984                                                   eentry->msf.frame);
1985                         } else {
1986                                 /*
1987                                  * If we don't have a valid TOC, try the
1988                                  * play track index command.  It is part of
1989                                  * the SCSI-2 spec, but was removed in the
1990                                  * MMC specs.  ATAPI and ATAPI-derived
1991                                  * drives don't support it.
1992                                  */
1993                                 if (softc->quirks & CD_Q_BCD_TRACKS) {
1994                                         args->start_track =
1995                                                 bin2bcd(args->start_track);
1996                                         args->end_track =
1997                                                 bin2bcd(args->end_track);
1998                                 }
1999                                 error = cdplaytracks(periph,
2000                                                      args->start_track,
2001                                                      args->start_index,
2002                                                      args->end_track,
2003                                                      args->end_index);
2004                         }
2005                         cam_periph_unlock(periph);
2006                 }
2007                 break;
2008         case CDIOCPLAYMSF:
2009                 {
2010                         struct ioc_play_msf *args
2011                                 = (struct ioc_play_msf *) addr;
2012                         struct cd_mode_params params;
2013                         union cd_pages *page;
2014
2015                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2016                         params.mode_buf = malloc(params.alloc_len, M_SCSICD,
2017                                                  M_WAITOK | M_ZERO);
2018
2019                         cam_periph_lock(periph);
2020                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2021                                   ("trying to do CDIOCPLAYMSF\n"));
2022
2023                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2024                         if (error) {
2025                                 free(params.mode_buf, M_SCSICD);
2026                                 cam_periph_unlock(periph);
2027                                 break;
2028                         }
2029                         page = cdgetpage(&params);
2030
2031                         page->audio.flags &= ~CD_PA_SOTC;
2032                         page->audio.flags |= CD_PA_IMMED;
2033                         error = cdsetmode(periph, &params);
2034                         free(params.mode_buf, M_SCSICD);
2035                         if (error) {
2036                                 cam_periph_unlock(periph);
2037                                 break;
2038                         }
2039                         error = cdplaymsf(periph,
2040                                           args->start_m,
2041                                           args->start_s,
2042                                           args->start_f,
2043                                           args->end_m,
2044                                           args->end_s,
2045                                           args->end_f);
2046                         cam_periph_unlock(periph);
2047                 }
2048                 break;
2049         case CDIOCPLAYBLOCKS:
2050                 {
2051                         struct ioc_play_blocks *args
2052                                 = (struct ioc_play_blocks *) addr;
2053                         struct cd_mode_params params;
2054                         union cd_pages *page;
2055
2056                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2057                         params.mode_buf = malloc(params.alloc_len, M_SCSICD,
2058                                                  M_WAITOK | M_ZERO);
2059
2060                         cam_periph_lock(periph);
2061                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2062                                   ("trying to do CDIOCPLAYBLOCKS\n"));
2063
2064
2065                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2066                         if (error) {
2067                                 free(params.mode_buf, M_SCSICD);
2068                                 cam_periph_unlock(periph);
2069                                 break;
2070                         }
2071                         page = cdgetpage(&params);
2072
2073                         page->audio.flags &= ~CD_PA_SOTC;
2074                         page->audio.flags |= CD_PA_IMMED;
2075                         error = cdsetmode(periph, &params);
2076                         free(params.mode_buf, M_SCSICD);
2077                         if (error) {
2078                                 cam_periph_unlock(periph);
2079                                 break;
2080                         }
2081                         error = cdplay(periph, args->blk, args->len);
2082                         cam_periph_unlock(periph);
2083                 }
2084                 break;
2085         case CDIOCREADSUBCHANNEL_SYSSPACE:
2086                 nocopyout = 1;
2087                 /* Fallthrough */
2088         case CDIOCREADSUBCHANNEL:
2089                 {
2090                         struct ioc_read_subchannel *args
2091                                 = (struct ioc_read_subchannel *) addr;
2092                         struct cd_sub_channel_info *data;
2093                         u_int32_t len = args->data_len;
2094
2095                         data = malloc(sizeof(struct cd_sub_channel_info),
2096                                       M_SCSICD, M_WAITOK | M_ZERO);
2097
2098                         cam_periph_lock(periph);
2099                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2100                                   ("trying to do CDIOCREADSUBCHANNEL\n"));
2101
2102                         if ((len > sizeof(struct cd_sub_channel_info)) ||
2103                             (len < sizeof(struct cd_sub_channel_header))) {
2104                                 printf(
2105                                         "scsi_cd: cdioctl: "
2106                                         "cdioreadsubchannel: error, len=%d\n",
2107                                         len);
2108                                 error = EINVAL;
2109                                 free(data, M_SCSICD);
2110                                 cam_periph_unlock(periph);
2111                                 break;
2112                         }
2113
2114                         if (softc->quirks & CD_Q_BCD_TRACKS)
2115                                 args->track = bin2bcd(args->track);
2116
2117                         error = cdreadsubchannel(periph, args->address_format,
2118                                 args->data_format, args->track, data, len);
2119
2120                         if (error) {
2121                                 free(data, M_SCSICD);
2122                                 cam_periph_unlock(periph);
2123                                 break;
2124                         }
2125                         if (softc->quirks & CD_Q_BCD_TRACKS)
2126                                 data->what.track_info.track_number =
2127                                     bcd2bin(data->what.track_info.track_number);
2128                         len = min(len, ((data->header.data_len[0] << 8) +
2129                                 data->header.data_len[1] +
2130                                 sizeof(struct cd_sub_channel_header)));
2131                         cam_periph_unlock(periph);
2132                         if (nocopyout == 0) {
2133                                 if (copyout(data, args->data, len) != 0) {
2134                                         error = EFAULT;
2135                                 }
2136                         } else {
2137                                 bcopy(data, args->data, len);
2138                         }
2139                         free(data, M_SCSICD);
2140                 }
2141                 break;
2142
2143         case CDIOREADTOCHEADER:
2144                 {
2145                         struct ioc_toc_header *th;
2146
2147                         th = malloc(sizeof(struct ioc_toc_header), M_SCSICD,
2148                                     M_WAITOK | M_ZERO);
2149
2150                         cam_periph_lock(periph);
2151                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2152                                   ("trying to do CDIOREADTOCHEADER\n"));
2153
2154                         error = cdreadtoc(periph, 0, 0, (u_int8_t *)th,
2155                                           sizeof (*th), /*sense_flags*/SF_NO_PRINT);
2156                         if (error) {
2157                                 free(th, M_SCSICD);
2158                                 cam_periph_unlock(periph);
2159                                 break;
2160                         }
2161                         if (softc->quirks & CD_Q_BCD_TRACKS) {
2162                                 /* we are going to have to convert the BCD
2163                                  * encoding on the cd to what is expected
2164                                  */
2165                                 th->starting_track =
2166                                         bcd2bin(th->starting_track);
2167                                 th->ending_track = bcd2bin(th->ending_track);
2168                         }
2169                         th->len = ntohs(th->len);
2170                         bcopy(th, addr, sizeof(*th));
2171                         free(th, M_SCSICD);
2172                         cam_periph_unlock(periph);
2173                 }
2174                 break;
2175         case CDIOREADTOCENTRYS:
2176                 {
2177                         struct cd_tocdata *data;
2178                         struct cd_toc_single *lead;
2179                         struct ioc_read_toc_entry *te =
2180                                 (struct ioc_read_toc_entry *) addr;
2181                         struct ioc_toc_header *th;
2182                         u_int32_t len, readlen, idx, num;
2183                         u_int32_t starting_track = te->starting_track;
2184
2185                         data = malloc(sizeof(*data), M_SCSICD, M_WAITOK | M_ZERO);
2186                         lead = malloc(sizeof(*lead), M_SCSICD, M_WAITOK | M_ZERO);
2187
2188                         cam_periph_lock(periph);
2189                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2190                                   ("trying to do CDIOREADTOCENTRYS\n"));
2191
2192                         if (te->data_len < sizeof(struct cd_toc_entry)
2193                          || (te->data_len % sizeof(struct cd_toc_entry)) != 0
2194                          || (te->address_format != CD_MSF_FORMAT
2195                           && te->address_format != CD_LBA_FORMAT)) {
2196                                 error = EINVAL;
2197                                 printf("scsi_cd: error in readtocentries, "
2198                                        "returning EINVAL\n");
2199                                 free(data, M_SCSICD);
2200                                 free(lead, M_SCSICD);
2201                                 cam_periph_unlock(periph);
2202                                 break;
2203                         }
2204
2205                         th = &data->header;
2206                         error = cdreadtoc(periph, 0, 0, (u_int8_t *)th,
2207                                           sizeof (*th), /*sense_flags*/0);
2208                         if (error) {
2209                                 free(data, M_SCSICD);
2210                                 free(lead, M_SCSICD);
2211                                 cam_periph_unlock(periph);
2212                                 break;
2213                         }
2214
2215                         if (softc->quirks & CD_Q_BCD_TRACKS) {
2216                                 /* we are going to have to convert the BCD
2217                                  * encoding on the cd to what is expected
2218                                  */
2219                                 th->starting_track =
2220                                     bcd2bin(th->starting_track);
2221                                 th->ending_track = bcd2bin(th->ending_track);
2222                         }
2223
2224                         if (starting_track == 0)
2225                                 starting_track = th->starting_track;
2226                         else if (starting_track == LEADOUT)
2227                                 starting_track = th->ending_track + 1;
2228                         else if (starting_track < th->starting_track ||
2229                                  starting_track > th->ending_track + 1) {
2230                                 printf("scsi_cd: error in readtocentries, "
2231                                        "returning EINVAL\n");
2232                                 free(data, M_SCSICD);
2233                                 free(lead, M_SCSICD);
2234                                 cam_periph_unlock(periph);
2235                                 error = EINVAL;
2236                                 break;
2237                         }
2238
2239                         /* calculate reading length without leadout entry */
2240                         readlen = (th->ending_track - starting_track + 1) *
2241                                   sizeof(struct cd_toc_entry);
2242
2243                         /* and with leadout entry */
2244                         len = readlen + sizeof(struct cd_toc_entry);
2245                         if (te->data_len < len) {
2246                                 len = te->data_len;
2247                                 if (readlen > len)
2248                                         readlen = len;
2249                         }
2250                         if (len > sizeof(data->entries)) {
2251                                 printf("scsi_cd: error in readtocentries, "
2252                                        "returning EINVAL\n");
2253                                 error = EINVAL;
2254                                 free(data, M_SCSICD);
2255                                 free(lead, M_SCSICD);
2256                                 cam_periph_unlock(periph);
2257                                 break;
2258                         }
2259                         num = len / sizeof(struct cd_toc_entry);
2260
2261                         if (readlen > 0) {
2262                                 error = cdreadtoc(periph, te->address_format,
2263                                                   starting_track,
2264                                                   (u_int8_t *)data,
2265                                                   readlen + sizeof (*th),
2266                                                   /*sense_flags*/0);
2267                                 if (error) {
2268                                         free(data, M_SCSICD);
2269                                         free(lead, M_SCSICD);
2270                                         cam_periph_unlock(periph);
2271                                         break;
2272                                 }
2273                         }
2274
2275                         /* make leadout entry if needed */
2276                         idx = starting_track + num - 1;
2277                         if (softc->quirks & CD_Q_BCD_TRACKS)
2278                                 th->ending_track = bcd2bin(th->ending_track);
2279                         if (idx == th->ending_track + 1) {
2280                                 error = cdreadtoc(periph, te->address_format,
2281                                                   LEADOUT, (u_int8_t *)lead,
2282                                                   sizeof(*lead),
2283                                                   /*sense_flags*/0);
2284                                 if (error) {
2285                                         free(data, M_SCSICD);
2286                                         free(lead, M_SCSICD);
2287                                         cam_periph_unlock(periph);
2288                                         break;
2289                                 }
2290                                 data->entries[idx - starting_track] =
2291                                         lead->entry;
2292                         }
2293                         if (softc->quirks & CD_Q_BCD_TRACKS) {
2294                                 for (idx = 0; idx < num - 1; idx++) {
2295                                         data->entries[idx].track =
2296                                             bcd2bin(data->entries[idx].track);
2297                                 }
2298                         }
2299
2300                         cam_periph_unlock(periph);
2301                         error = copyout(data->entries, te->data, len);
2302                         free(data, M_SCSICD);
2303                         free(lead, M_SCSICD);
2304                 }
2305                 break;
2306         case CDIOREADTOCENTRY:
2307                 {
2308                         struct cd_toc_single *data;
2309                         struct ioc_read_toc_single_entry *te =
2310                                 (struct ioc_read_toc_single_entry *) addr;
2311                         struct ioc_toc_header *th;
2312                         u_int32_t track;
2313
2314                         data = malloc(sizeof(*data), M_SCSICD, M_WAITOK | M_ZERO);
2315
2316                         cam_periph_lock(periph);
2317                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2318                                   ("trying to do CDIOREADTOCENTRY\n"));
2319
2320                         if (te->address_format != CD_MSF_FORMAT
2321                             && te->address_format != CD_LBA_FORMAT) {
2322                                 printf("error in readtocentry, "
2323                                        " returning EINVAL\n");
2324                                 free(data, M_SCSICD);
2325                                 error = EINVAL;
2326                                 cam_periph_unlock(periph);
2327                                 break;
2328                         }
2329
2330                         th = &data->header;
2331                         error = cdreadtoc(periph, 0, 0, (u_int8_t *)th,
2332                                           sizeof (*th), /*sense_flags*/0);
2333                         if (error) {
2334                                 free(data, M_SCSICD);
2335                                 cam_periph_unlock(periph);
2336                                 break;
2337                         }
2338
2339                         if (softc->quirks & CD_Q_BCD_TRACKS) {
2340                                 /* we are going to have to convert the BCD
2341                                  * encoding on the cd to what is expected
2342                                  */
2343                                 th->starting_track =
2344                                     bcd2bin(th->starting_track);
2345                                 th->ending_track = bcd2bin(th->ending_track);
2346                         }
2347                         track = te->track;
2348                         if (track == 0)
2349                                 track = th->starting_track;
2350                         else if (track == LEADOUT)
2351                                 /* OK */;
2352                         else if (track < th->starting_track ||
2353                                  track > th->ending_track + 1) {
2354                                 printf("error in readtocentry, "
2355                                        " returning EINVAL\n");
2356                                 free(data, M_SCSICD);
2357                                 error = EINVAL;
2358                                 cam_periph_unlock(periph);
2359                                 break;
2360                         }
2361
2362                         error = cdreadtoc(periph, te->address_format, track,
2363                                           (u_int8_t *)data, sizeof(*data),
2364                                           /*sense_flags*/0);
2365                         if (error) {
2366                                 free(data, M_SCSICD);
2367                                 cam_periph_unlock(periph);
2368                                 break;
2369                         }
2370
2371                         if (softc->quirks & CD_Q_BCD_TRACKS)
2372                                 data->entry.track = bcd2bin(data->entry.track);
2373                         bcopy(&data->entry, &te->entry,
2374                               sizeof(struct cd_toc_entry));
2375                         free(data, M_SCSICD);
2376                         cam_periph_unlock(periph);
2377                 }
2378                 break;
2379         case CDIOCSETPATCH:
2380                 {
2381                         struct ioc_patch *arg = (struct ioc_patch *)addr;
2382                         struct cd_mode_params params;
2383                         union cd_pages *page;
2384
2385                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2386                         params.mode_buf = malloc(params.alloc_len, M_SCSICD,
2387                                                  M_WAITOK | M_ZERO);
2388
2389                         cam_periph_lock(periph);
2390                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2391                                   ("trying to do CDIOCSETPATCH\n"));
2392
2393                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2394                         if (error) {
2395                                 free(params.mode_buf, M_SCSICD);
2396                                 cam_periph_unlock(periph);
2397                                 break;
2398                         }
2399                         page = cdgetpage(&params);
2400
2401                         page->audio.port[LEFT_PORT].channels =
2402                                 arg->patch[0];
2403                         page->audio.port[RIGHT_PORT].channels =
2404                                 arg->patch[1];
2405                         page->audio.port[2].channels = arg->patch[2];
2406                         page->audio.port[3].channels = arg->patch[3];
2407                         error = cdsetmode(periph, &params);
2408                         free(params.mode_buf, M_SCSICD);
2409                         cam_periph_unlock(periph);
2410                 }
2411                 break;
2412         case CDIOCGETVOL:
2413                 {
2414                         struct ioc_vol *arg = (struct ioc_vol *) addr;
2415                         struct cd_mode_params params;
2416                         union cd_pages *page;
2417
2418                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2419                         params.mode_buf = malloc(params.alloc_len, M_SCSICD,
2420                                                  M_WAITOK | M_ZERO);
2421
2422                         cam_periph_lock(periph);
2423                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2424                                   ("trying to do CDIOCGETVOL\n"));
2425
2426                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2427                         if (error) {
2428                                 free(params.mode_buf, M_SCSICD);
2429                                 cam_periph_unlock(periph);
2430                                 break;
2431                         }
2432                         page = cdgetpage(&params);
2433
2434                         arg->vol[LEFT_PORT] =
2435                                 page->audio.port[LEFT_PORT].volume;
2436                         arg->vol[RIGHT_PORT] =
2437                                 page->audio.port[RIGHT_PORT].volume;
2438                         arg->vol[2] = page->audio.port[2].volume;
2439                         arg->vol[3] = page->audio.port[3].volume;
2440                         free(params.mode_buf, M_SCSICD);
2441                         cam_periph_unlock(periph);
2442                 }
2443                 break;
2444         case CDIOCSETVOL:
2445                 {
2446                         struct ioc_vol *arg = (struct ioc_vol *) addr;
2447                         struct cd_mode_params params;
2448                         union cd_pages *page;
2449
2450                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2451                         params.mode_buf = malloc(params.alloc_len, M_SCSICD,
2452                                                  M_WAITOK | M_ZERO);
2453
2454                         cam_periph_lock(periph);
2455                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2456                                   ("trying to do CDIOCSETVOL\n"));
2457
2458                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2459                         if (error) {
2460                                 free(params.mode_buf, M_SCSICD);
2461                                 cam_periph_unlock(periph);
2462                                 break;
2463                         }
2464                         page = cdgetpage(&params);
2465
2466                         page->audio.port[LEFT_PORT].channels = CHANNEL_0;
2467                         page->audio.port[LEFT_PORT].volume =
2468                                 arg->vol[LEFT_PORT];
2469                         page->audio.port[RIGHT_PORT].channels = CHANNEL_1;
2470                         page->audio.port[RIGHT_PORT].volume =
2471                                 arg->vol[RIGHT_PORT];
2472                         page->audio.port[2].volume = arg->vol[2];
2473                         page->audio.port[3].volume = arg->vol[3];
2474                         error = cdsetmode(periph, &params);
2475                         cam_periph_unlock(periph);
2476                         free(params.mode_buf, M_SCSICD);
2477                 }
2478                 break;
2479         case CDIOCSETMONO:
2480                 {
2481                         struct cd_mode_params params;
2482                         union cd_pages *page;
2483
2484                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2485                         params.mode_buf = malloc(params.alloc_len, M_SCSICD,
2486                                                  M_WAITOK | M_ZERO);
2487
2488                         cam_periph_lock(periph);
2489                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2490                                   ("trying to do CDIOCSETMONO\n"));
2491
2492                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2493                         if (error) {
2494                                 free(params.mode_buf, M_SCSICD);
2495                                 cam_periph_unlock(periph);
2496                                 break;
2497                         }
2498                         page = cdgetpage(&params);
2499
2500                         page->audio.port[LEFT_PORT].channels =
2501                                 LEFT_CHANNEL | RIGHT_CHANNEL;
2502                         page->audio.port[RIGHT_PORT].channels =
2503                                 LEFT_CHANNEL | RIGHT_CHANNEL;
2504                         page->audio.port[2].channels = 0;
2505                         page->audio.port[3].channels = 0;
2506                         error = cdsetmode(periph, &params);
2507                         cam_periph_unlock(periph);
2508                         free(params.mode_buf, M_SCSICD);
2509                 }
2510                 break;
2511         case CDIOCSETSTEREO:
2512                 {
2513                         struct cd_mode_params params;
2514                         union cd_pages *page;
2515
2516                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2517                         params.mode_buf = malloc(params.alloc_len, M_SCSICD,
2518                                                  M_WAITOK | M_ZERO);
2519
2520                         cam_periph_lock(periph);
2521                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2522                                   ("trying to do CDIOCSETSTEREO\n"));
2523
2524                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2525                         if (error) {
2526                                 free(params.mode_buf, M_SCSICD);
2527                                 cam_periph_unlock(periph);
2528                                 break;
2529                         }
2530                         page = cdgetpage(&params);
2531
2532                         page->audio.port[LEFT_PORT].channels =
2533                                 LEFT_CHANNEL;
2534                         page->audio.port[RIGHT_PORT].channels =
2535                                 RIGHT_CHANNEL;
2536                         page->audio.port[2].channels = 0;
2537                         page->audio.port[3].channels = 0;
2538                         error = cdsetmode(periph, &params);
2539                         free(params.mode_buf, M_SCSICD);
2540                         cam_periph_unlock(periph);
2541                 }
2542                 break;
2543         case CDIOCSETMUTE:
2544                 {
2545                         struct cd_mode_params params;
2546                         union cd_pages *page;
2547
2548                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2549                         params.mode_buf = malloc(params.alloc_len, M_SCSICD,
2550                                                  M_WAITOK | M_ZERO);
2551
2552                         cam_periph_lock(periph);
2553                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2554                                   ("trying to do CDIOCSETMUTE\n"));
2555
2556                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2557                         if (error) {
2558                                 free(params.mode_buf, M_SCSICD);
2559                                 cam_periph_unlock(periph);
2560                                 break;
2561                         }
2562                         page = cdgetpage(&params);
2563
2564                         page->audio.port[LEFT_PORT].channels = 0;
2565                         page->audio.port[RIGHT_PORT].channels = 0;
2566                         page->audio.port[2].channels = 0;
2567                         page->audio.port[3].channels = 0;
2568                         error = cdsetmode(periph, &params);
2569                         free(params.mode_buf, M_SCSICD);
2570                         cam_periph_unlock(periph);
2571                 }
2572                 break;
2573         case CDIOCSETLEFT:
2574                 {
2575                         struct cd_mode_params params;
2576                         union cd_pages *page;
2577
2578                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2579                         params.mode_buf = malloc(params.alloc_len, M_SCSICD,
2580                                                  M_WAITOK | M_ZERO);
2581
2582                         cam_periph_lock(periph);
2583                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2584                                   ("trying to do CDIOCSETLEFT\n"));
2585
2586                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2587                         if (error) {
2588                                 free(params.mode_buf, M_SCSICD);
2589                                 cam_periph_unlock(periph);
2590                                 break;
2591                         }
2592                         page = cdgetpage(&params);
2593
2594                         page->audio.port[LEFT_PORT].channels = LEFT_CHANNEL;
2595                         page->audio.port[RIGHT_PORT].channels = LEFT_CHANNEL;
2596                         page->audio.port[2].channels = 0;
2597                         page->audio.port[3].channels = 0;
2598                         error = cdsetmode(periph, &params);
2599                         free(params.mode_buf, M_SCSICD);
2600                         cam_periph_unlock(periph);
2601                 }
2602                 break;
2603         case CDIOCSETRIGHT:
2604                 {
2605                         struct cd_mode_params params;
2606                         union cd_pages *page;
2607
2608                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2609                         params.mode_buf = malloc(params.alloc_len, M_SCSICD,
2610                                                  M_WAITOK | M_ZERO);
2611
2612                         cam_periph_lock(periph);
2613                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2614                                   ("trying to do CDIOCSETRIGHT\n"));
2615
2616                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2617                         if (error) {
2618                                 free(params.mode_buf, M_SCSICD);
2619                                 cam_periph_unlock(periph);
2620                                 break;
2621                         }
2622                         page = cdgetpage(&params);
2623
2624                         page->audio.port[LEFT_PORT].channels = RIGHT_CHANNEL;
2625                         page->audio.port[RIGHT_PORT].channels = RIGHT_CHANNEL;
2626                         page->audio.port[2].channels = 0;
2627                         page->audio.port[3].channels = 0;
2628                         error = cdsetmode(periph, &params);
2629                         free(params.mode_buf, M_SCSICD);
2630                         cam_periph_unlock(periph);
2631                 }
2632                 break;
2633         case CDIOCRESUME:
2634                 cam_periph_lock(periph);
2635                 error = cdpause(periph, 1);
2636                 cam_periph_unlock(periph);
2637                 break;
2638         case CDIOCPAUSE:
2639                 cam_periph_lock(periph);
2640                 error = cdpause(periph, 0);
2641                 cam_periph_unlock(periph);
2642                 break;
2643         case CDIOCSTART:
2644                 cam_periph_lock(periph);
2645                 error = cdstartunit(periph, 0);
2646                 cam_periph_unlock(periph);
2647                 break;
2648         case CDIOCCLOSE:
2649                 cam_periph_lock(periph);
2650                 error = cdstartunit(periph, 1);
2651                 cam_periph_unlock(periph);
2652                 break;
2653         case CDIOCSTOP:
2654                 cam_periph_lock(periph);
2655                 error = cdstopunit(periph, 0);
2656                 cam_periph_unlock(periph);
2657                 break;
2658         case CDIOCEJECT:
2659                 cam_periph_lock(periph);
2660                 error = cdstopunit(periph, 1);
2661                 cam_periph_unlock(periph);
2662                 break;
2663         case CDIOCALLOW:
2664                 cam_periph_lock(periph);
2665                 cdprevent(periph, PR_ALLOW);
2666                 cam_periph_unlock(periph);
2667                 break;
2668         case CDIOCPREVENT:
2669                 cam_periph_lock(periph);
2670                 cdprevent(periph, PR_PREVENT);
2671                 cam_periph_unlock(periph);
2672                 break;
2673         case CDIOCSETDEBUG:
2674                 /* sc_link->flags |= (SDEV_DB1 | SDEV_DB2); */
2675                 error = ENOTTY;
2676                 break;
2677         case CDIOCCLRDEBUG:
2678                 /* sc_link->flags &= ~(SDEV_DB1 | SDEV_DB2); */
2679                 error = ENOTTY;
2680                 break;
2681         case CDIOCRESET:
2682                 /* return (cd_reset(periph)); */
2683                 error = ENOTTY;
2684                 break;
2685         case CDRIOCREADSPEED:
2686                 cam_periph_lock(periph);
2687                 error = cdsetspeed(periph, *(u_int32_t *)addr, CDR_MAX_SPEED);
2688                 cam_periph_unlock(periph);
2689                 break;
2690         case CDRIOCWRITESPEED:
2691                 cam_periph_lock(periph);
2692                 error = cdsetspeed(periph, CDR_MAX_SPEED, *(u_int32_t *)addr);
2693                 cam_periph_unlock(periph);
2694                 break;
2695         case CDRIOCGETBLOCKSIZE:
2696                 *(int *)addr = softc->params.blksize;
2697                 break;
2698         case CDRIOCSETBLOCKSIZE:
2699                 if (*(int *)addr <= 0) {
2700                         error = EINVAL;
2701                         break;
2702                 }
2703                 softc->disk->d_sectorsize = softc->params.blksize = *(int *)addr;
2704                 break;
2705         case DVDIOCSENDKEY:
2706         case DVDIOCREPORTKEY: {
2707                 struct dvd_authinfo *authinfo;
2708
2709                 authinfo = (struct dvd_authinfo *)addr;
2710
2711                 if (cmd == DVDIOCREPORTKEY)
2712                         error = cdreportkey(periph, authinfo);
2713                 else
2714                         error = cdsendkey(periph, authinfo);
2715                 break;
2716                 }
2717         case DVDIOCREADSTRUCTURE: {
2718                 struct dvd_struct *dvdstruct;
2719
2720                 dvdstruct = (struct dvd_struct *)addr;
2721
2722                 error = cdreaddvdstructure(periph, dvdstruct);
2723
2724                 break;
2725         }
2726         default:
2727                 cam_periph_lock(periph);
2728                 error = cam_periph_ioctl(periph, cmd, addr, cderror);
2729                 cam_periph_unlock(periph);
2730                 break;
2731         }
2732
2733         cam_periph_lock(periph);
2734         cam_periph_unhold(periph);
2735
2736         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("leaving cdioctl\n"));
2737         if (error && bootverbose) {
2738                 printf("scsi_cd.c::ioctl cmd=%08lx error=%d\n", cmd, error);
2739         }
2740         cam_periph_unlock(periph);
2741
2742         return (error);
2743 }
2744
2745 static void
2746 cdprevent(struct cam_periph *periph, int action)
2747 {
2748         union   ccb *ccb;
2749         struct  cd_softc *softc;
2750         int     error;
2751
2752         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("entering cdprevent\n"));
2753
2754         softc = (struct cd_softc *)periph->softc;
2755
2756         if (((action == PR_ALLOW)
2757           && (softc->flags & CD_FLAG_DISC_LOCKED) == 0)
2758          || ((action == PR_PREVENT)
2759           && (softc->flags & CD_FLAG_DISC_LOCKED) != 0)) {
2760                 return;
2761         }
2762
2763         ccb = cdgetccb(periph, CAM_PRIORITY_NORMAL);
2764
2765         scsi_prevent(&ccb->csio,
2766                      /*retries*/ cd_retry_count,
2767                      cddone,
2768                      MSG_SIMPLE_Q_TAG,
2769                      action,
2770                      SSD_FULL_SIZE,
2771                      /* timeout */60000);
2772
2773         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
2774                         /*sense_flags*/SF_RETRY_UA|SF_NO_PRINT);
2775
2776         xpt_release_ccb(ccb);
2777
2778         if (error == 0) {
2779                 if (action == PR_ALLOW)
2780                         softc->flags &= ~CD_FLAG_DISC_LOCKED;
2781                 else
2782                         softc->flags |= CD_FLAG_DISC_LOCKED;
2783         }
2784 }
2785
2786 /*
2787  * XXX: the disk media and sector size is only really able to change
2788  * XXX: while the device is closed.
2789  */
2790 static int
2791 cdcheckmedia(struct cam_periph *periph)
2792 {
2793         struct cd_softc *softc;
2794         struct ioc_toc_header *toch;
2795         struct cd_toc_single leadout;
2796         u_int32_t size, toclen;
2797         int error, num_entries, cdindex;
2798
2799         softc = (struct cd_softc *)periph->softc;
2800
2801         cdprevent(periph, PR_PREVENT);
2802         softc->disk->d_sectorsize = 2048;
2803         softc->disk->d_mediasize = 0;
2804
2805         /*
2806          * Get the disc size and block size.  If we can't get it, we don't
2807          * have media, most likely.
2808          */
2809         if ((error = cdsize(periph, &size)) != 0) {
2810                 softc->flags &= ~(CD_FLAG_VALID_MEDIA|CD_FLAG_VALID_TOC);
2811                 cdprevent(periph, PR_ALLOW);
2812                 return (error);
2813         } else {
2814                 softc->flags |= CD_FLAG_VALID_MEDIA;
2815                 softc->disk->d_sectorsize = softc->params.blksize;
2816                 softc->disk->d_mediasize =
2817                     (off_t)softc->params.blksize * softc->params.disksize;
2818         }
2819
2820         /*
2821          * Now we check the table of contents.  This (currently) is only
2822          * used for the CDIOCPLAYTRACKS ioctl.  It may be used later to do
2823          * things like present a separate entry in /dev for each track,
2824          * like that acd(4) driver does.
2825          */
2826         bzero(&softc->toc, sizeof(softc->toc));
2827         toch = &softc->toc.header;
2828         /*
2829          * We will get errors here for media that doesn't have a table of
2830          * contents.  According to the MMC-3 spec: "When a Read TOC/PMA/ATIP
2831          * command is presented for a DDCD/CD-R/RW media, where the first TOC
2832          * has not been recorded (no complete session) and the Format codes
2833          * 0000b, 0001b, or 0010b are specified, this command shall be rejected
2834          * with an INVALID FIELD IN CDB.  Devices that are not capable of
2835          * reading an incomplete session on DDC/CD-R/RW media shall report
2836          * CANNOT READ MEDIUM - INCOMPATIBLE FORMAT."
2837          *
2838          * So this isn't fatal if we can't read the table of contents, it
2839          * just means that the user won't be able to issue the play tracks
2840          * ioctl, and likely lots of other stuff won't work either.  They
2841          * need to burn the CD before we can do a whole lot with it.  So
2842          * we don't print anything here if we get an error back.
2843          */
2844         error = cdreadtoc(periph, 0, 0, (u_int8_t *)toch, sizeof(*toch),
2845                           SF_NO_PRINT);
2846         /*
2847          * Errors in reading the table of contents aren't fatal, we just
2848          * won't have a valid table of contents cached.
2849          */
2850         if (error != 0) {
2851                 error = 0;
2852                 bzero(&softc->toc, sizeof(softc->toc));
2853                 goto bailout;
2854         }
2855
2856         if (softc->quirks & CD_Q_BCD_TRACKS) {
2857                 toch->starting_track = bcd2bin(toch->starting_track);
2858                 toch->ending_track = bcd2bin(toch->ending_track);
2859         }
2860
2861         /* Number of TOC entries, plus leadout */
2862         num_entries = (toch->ending_track - toch->starting_track) + 2;
2863
2864         if (num_entries <= 0)
2865                 goto bailout;
2866
2867         toclen = num_entries * sizeof(struct cd_toc_entry);
2868
2869         error = cdreadtoc(periph, CD_MSF_FORMAT, toch->starting_track,
2870                           (u_int8_t *)&softc->toc, toclen + sizeof(*toch),
2871                           SF_NO_PRINT);
2872         if (error != 0) {
2873                 error = 0;
2874                 bzero(&softc->toc, sizeof(softc->toc));
2875                 goto bailout;
2876         }
2877
2878         if (softc->quirks & CD_Q_BCD_TRACKS) {
2879                 toch->starting_track = bcd2bin(toch->starting_track);
2880                 toch->ending_track = bcd2bin(toch->ending_track);
2881         }
2882         /*
2883          * XXX KDM is this necessary?  Probably only if the drive doesn't
2884          * return leadout information with the table of contents.
2885          */
2886         cdindex = toch->starting_track + num_entries -1;
2887         if (cdindex == toch->ending_track + 1) {
2888
2889                 error = cdreadtoc(periph, CD_MSF_FORMAT, LEADOUT,
2890                                   (u_int8_t *)&leadout, sizeof(leadout),
2891                                   SF_NO_PRINT);
2892                 if (error != 0) {
2893                         error = 0;
2894                         goto bailout;
2895                 }
2896                 softc->toc.entries[cdindex - toch->starting_track] =
2897                         leadout.entry;
2898         }
2899         if (softc->quirks & CD_Q_BCD_TRACKS) {
2900                 for (cdindex = 0; cdindex < num_entries - 1; cdindex++) {
2901                         softc->toc.entries[cdindex].track =
2902                                 bcd2bin(softc->toc.entries[cdindex].track);
2903                 }
2904         }
2905
2906         softc->flags |= CD_FLAG_VALID_TOC;
2907
2908         /* If the first track is audio, correct sector size. */
2909         if ((softc->toc.entries[0].control & 4) == 0) {
2910                 softc->disk->d_sectorsize = softc->params.blksize = 2352;
2911                 softc->disk->d_mediasize =
2912                     (off_t)softc->params.blksize * softc->params.disksize;
2913         }
2914
2915 bailout:
2916
2917         /*
2918          * We unconditionally (re)set the blocksize each time the
2919          * CD device is opened.  This is because the CD can change,
2920          * and therefore the blocksize might change.
2921          * XXX problems here if some slice or partition is still
2922          * open with the old size?
2923          */
2924         if ((softc->disk->d_devstat->flags & DEVSTAT_BS_UNAVAILABLE) != 0)
2925                 softc->disk->d_devstat->flags &= ~DEVSTAT_BS_UNAVAILABLE;
2926         softc->disk->d_devstat->block_size = softc->params.blksize;
2927
2928         return (error);
2929 }
2930
2931 static int
2932 cdsize(struct cam_periph *periph, u_int32_t *size)
2933 {
2934         struct cd_softc *softc;
2935         union ccb *ccb;
2936         struct scsi_read_capacity_data *rcap_buf;
2937         int error;
2938
2939         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("entering cdsize\n"));
2940
2941         softc = (struct cd_softc *)periph->softc;
2942
2943         ccb = cdgetccb(periph, CAM_PRIORITY_NORMAL);
2944
2945         /* XXX Should be M_WAITOK */
2946         rcap_buf = malloc(sizeof(struct scsi_read_capacity_data),
2947                           M_SCSICD, M_NOWAIT | M_ZERO);
2948         if (rcap_buf == NULL)
2949                 return (ENOMEM);
2950
2951         scsi_read_capacity(&ccb->csio,
2952                            /*retries*/ cd_retry_count,
2953                            cddone,
2954                            MSG_SIMPLE_Q_TAG,
2955                            rcap_buf,
2956                            SSD_FULL_SIZE,
2957                            /* timeout */20000);
2958
2959         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
2960                          /*sense_flags*/SF_RETRY_UA|SF_NO_PRINT);
2961
2962         xpt_release_ccb(ccb);
2963
2964         softc->params.disksize = scsi_4btoul(rcap_buf->addr) + 1;
2965         softc->params.blksize  = scsi_4btoul(rcap_buf->length);
2966         /* Make sure we got at least some block size. */
2967         if (error == 0 && softc->params.blksize == 0)
2968                 error = EIO;
2969         /*
2970          * SCSI-3 mandates that the reported blocksize shall be 2048.
2971          * Older drives sometimes report funny values, trim it down to
2972          * 2048, or other parts of the kernel will get confused.
2973          *
2974          * XXX we leave drives alone that might report 512 bytes, as
2975          * well as drives reporting more weird sizes like perhaps 4K.
2976          */
2977         if (softc->params.blksize > 2048 && softc->params.blksize <= 2352)
2978                 softc->params.blksize = 2048;
2979
2980         free(rcap_buf, M_SCSICD);
2981         *size = softc->params.disksize;
2982
2983         return (error);
2984
2985 }
2986
2987 static int
2988 cd6byteworkaround(union ccb *ccb)
2989 {
2990         u_int8_t *cdb;
2991         struct cam_periph *periph;
2992         struct cd_softc *softc;
2993         struct cd_mode_params *params;
2994         int frozen, found;
2995
2996         periph = xpt_path_periph(ccb->ccb_h.path);
2997         softc = (struct cd_softc *)periph->softc;
2998
2999         cdb = ccb->csio.cdb_io.cdb_bytes;
3000
3001         if ((ccb->ccb_h.flags & CAM_CDB_POINTER)
3002          || ((cdb[0] != MODE_SENSE_6)
3003           && (cdb[0] != MODE_SELECT_6)))
3004                 return (0);
3005
3006         /*
3007          * Because there is no convenient place to stash the overall
3008          * cd_mode_params structure pointer, we have to grab it like this.
3009          * This means that ALL MODE_SENSE and MODE_SELECT requests in the
3010          * cd(4) driver MUST go through cdgetmode() and cdsetmode()!
3011          *
3012          * XXX It would be nice if, at some point, we could increase the
3013          * number of available peripheral private pointers.  Both pointers
3014          * are currently used in most every peripheral driver.
3015          */
3016         found = 0;
3017
3018         STAILQ_FOREACH(params, &softc->mode_queue, links) {
3019                 if (params->mode_buf == ccb->csio.data_ptr) {
3020                         found = 1;
3021                         break;
3022                 }
3023         }
3024
3025         /*
3026          * This shouldn't happen.  All mode sense and mode select
3027          * operations in the cd(4) driver MUST go through cdgetmode() and
3028          * cdsetmode()!
3029          */
3030         if (found == 0) {
3031                 xpt_print(periph->path,
3032                     "mode buffer not found in mode queue!\n");
3033                 return (0);
3034         }
3035
3036         params->cdb_size = 10;
3037         softc->minimum_command_size = 10;
3038         xpt_print(ccb->ccb_h.path,
3039             "%s(6) failed, increasing minimum CDB size to 10 bytes\n",
3040             (cdb[0] == MODE_SENSE_6) ? "MODE_SENSE" : "MODE_SELECT");
3041
3042         if (cdb[0] == MODE_SENSE_6) {
3043                 struct scsi_mode_sense_10 ms10;
3044                 struct scsi_mode_sense_6 *ms6;
3045                 int len;
3046
3047                 ms6 = (struct scsi_mode_sense_6 *)cdb;
3048
3049                 bzero(&ms10, sizeof(ms10));
3050                 ms10.opcode = MODE_SENSE_10;
3051                 ms10.byte2 = ms6->byte2;
3052                 ms10.page = ms6->page;
3053
3054                 /*
3055                  * 10 byte mode header, block descriptor,
3056                  * sizeof(union cd_pages)
3057                  */
3058                 len = sizeof(struct cd_mode_data_10);
3059                 ccb->csio.dxfer_len = len;
3060
3061                 scsi_ulto2b(len, ms10.length);
3062                 ms10.control = ms6->control;
3063                 bcopy(&ms10, cdb, 10);
3064                 ccb->csio.cdb_len = 10;
3065         } else {
3066                 struct scsi_mode_select_10 ms10;
3067                 struct scsi_mode_select_6 *ms6;
3068                 struct scsi_mode_header_6 *header6;
3069                 struct scsi_mode_header_10 *header10;
3070                 struct scsi_mode_page_header *page_header;
3071                 int blk_desc_len, page_num, page_size, len;
3072
3073                 ms6 = (struct scsi_mode_select_6 *)cdb;
3074
3075                 bzero(&ms10, sizeof(ms10));
3076                 ms10.opcode = MODE_SELECT_10;
3077                 ms10.byte2 = ms6->byte2;
3078
3079                 header6 = (struct scsi_mode_header_6 *)params->mode_buf;
3080                 header10 = (struct scsi_mode_header_10 *)params->mode_buf;
3081
3082                 page_header = find_mode_page_6(header6);
3083                 page_num = page_header->page_code;
3084
3085                 blk_desc_len = header6->blk_desc_len;
3086
3087                 page_size = cdgetpagesize(page_num);
3088
3089                 if (page_size != (page_header->page_length +
3090                     sizeof(*page_header)))
3091                         page_size = page_header->page_length +
3092                                 sizeof(*page_header);
3093
3094                 len = sizeof(*header10) + blk_desc_len + page_size;
3095
3096                 len = min(params->alloc_len, len);
3097
3098                 /*
3099                  * Since the 6 byte parameter header is shorter than the 10
3100                  * byte parameter header, we need to copy the actual mode
3101                  * page data, and the block descriptor, if any, so things wind
3102                  * up in the right place.  The regions will overlap, but
3103                  * bcopy() does the right thing.
3104                  */
3105                 bcopy(params->mode_buf + sizeof(*header6),
3106                       params->mode_buf + sizeof(*header10),
3107                       len - sizeof(*header10));
3108
3109                 /* Make sure these fields are set correctly. */
3110                 scsi_ulto2b(0, header10->data_length);
3111                 header10->medium_type = 0;
3112                 scsi_ulto2b(blk_desc_len, header10->blk_desc_len);
3113
3114                 ccb->csio.dxfer_len = len;
3115
3116                 scsi_ulto2b(len, ms10.length);
3117                 ms10.control = ms6->control;
3118                 bcopy(&ms10, cdb, 10);
3119                 ccb->csio.cdb_len = 10;
3120         }
3121
3122         frozen = (ccb->ccb_h.status & CAM_DEV_QFRZN) != 0;
3123         ccb->ccb_h.status = CAM_REQUEUE_REQ;
3124         xpt_action(ccb);
3125         if (frozen) {
3126                 cam_release_devq(ccb->ccb_h.path,
3127                                  /*relsim_flags*/0,
3128                                  /*openings*/0,
3129                                  /*timeout*/0,
3130                                  /*getcount_only*/0);
3131         }
3132
3133         return (ERESTART);
3134 }
3135
3136 static int
3137 cderror(union ccb *ccb, u_int32_t cam_flags, u_int32_t sense_flags)
3138 {
3139         struct cd_softc *softc;
3140         struct cam_periph *periph;
3141         int error;
3142
3143         periph = xpt_path_periph(ccb->ccb_h.path);
3144         softc = (struct cd_softc *)periph->softc;
3145
3146         error = 0;
3147
3148         /*
3149          * We use a status of CAM_REQ_INVALID as shorthand -- if a 6 byte
3150          * CDB comes back with this particular error, try transforming it
3151          * into the 10 byte version.
3152          */
3153         if ((ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_INVALID) {
3154                 error = cd6byteworkaround(ccb);
3155         } else if (((ccb->ccb_h.status & CAM_STATUS_MASK) ==
3156                      CAM_SCSI_STATUS_ERROR)
3157          && (ccb->ccb_h.status & CAM_AUTOSNS_VALID)
3158          && (ccb->csio.scsi_status == SCSI_STATUS_CHECK_COND)
3159          && ((ccb->ccb_h.flags & CAM_SENSE_PHYS) == 0)
3160          && ((ccb->ccb_h.flags & CAM_SENSE_PTR) == 0)) {
3161                 int sense_key, error_code, asc, ascq;
3162
3163                 scsi_extract_sense_len(&ccb->csio.sense_data,
3164                     ccb->csio.sense_len - ccb->csio.sense_resid, &error_code,
3165                     &sense_key, &asc, &ascq, /*show_errors*/ 1);
3166                 if (sense_key == SSD_KEY_ILLEGAL_REQUEST)
3167                         error = cd6byteworkaround(ccb);
3168         }
3169
3170         if (error == ERESTART)
3171                 return (error);
3172
3173         /*
3174          * XXX
3175          * Until we have a better way of doing pack validation,
3176          * don't treat UAs as errors.
3177          */
3178         sense_flags |= SF_RETRY_UA;
3179         return (cam_periph_error(ccb, cam_flags, sense_flags,
3180                                  &softc->saved_ccb));
3181 }
3182
3183 /*
3184  * Read table of contents
3185  */
3186 static int
3187 cdreadtoc(struct cam_periph *periph, u_int32_t mode, u_int32_t start,
3188           u_int8_t *data, u_int32_t len, u_int32_t sense_flags)
3189 {
3190         struct scsi_read_toc *scsi_cmd;
3191         u_int32_t ntoc;
3192         struct ccb_scsiio *csio;
3193         union ccb *ccb;
3194         int error;
3195
3196         ntoc = len;
3197         error = 0;
3198
3199         ccb = cdgetccb(periph, CAM_PRIORITY_NORMAL);
3200
3201         csio = &ccb->csio;
3202
3203         cam_fill_csio(csio,
3204                       /* retries */ cd_retry_count,
3205                       /* cbfcnp */ cddone,
3206                       /* flags */ CAM_DIR_IN,
3207                       /* tag_action */ MSG_SIMPLE_Q_TAG,
3208                       /* data_ptr */ data,
3209                       /* dxfer_len */ len,
3210                       /* sense_len */ SSD_FULL_SIZE,
3211                       sizeof(struct scsi_read_toc),
3212                       /* timeout */ 50000);
3213
3214         scsi_cmd = (struct scsi_read_toc *)&csio->cdb_io.cdb_bytes;
3215         bzero (scsi_cmd, sizeof(*scsi_cmd));
3216
3217         if (mode == CD_MSF_FORMAT)
3218                 scsi_cmd->byte2 |= CD_MSF;
3219         scsi_cmd->from_track = start;
3220         /* scsi_ulto2b(ntoc, (u_int8_t *)scsi_cmd->data_len); */
3221         scsi_cmd->data_len[0] = (ntoc) >> 8;
3222         scsi_cmd->data_len[1] = (ntoc) & 0xff;
3223
3224         scsi_cmd->op_code = READ_TOC;
3225
3226         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3227                          /*sense_flags*/SF_RETRY_UA | sense_flags);
3228
3229         xpt_release_ccb(ccb);
3230
3231         return(error);
3232 }
3233
3234 static int
3235 cdreadsubchannel(struct cam_periph *periph, u_int32_t mode,
3236                  u_int32_t format, int track,
3237                  struct cd_sub_channel_info *data, u_int32_t len)
3238 {
3239         struct scsi_read_subchannel *scsi_cmd;
3240         struct ccb_scsiio *csio;
3241         union ccb *ccb;
3242         int error;
3243
3244         error = 0;
3245
3246         ccb = cdgetccb(periph, CAM_PRIORITY_NORMAL);
3247
3248         csio = &ccb->csio;
3249
3250         cam_fill_csio(csio,
3251                       /* retries */ cd_retry_count,
3252                       /* cbfcnp */ cddone,
3253                       /* flags */ CAM_DIR_IN,
3254                       /* tag_action */ MSG_SIMPLE_Q_TAG,
3255                       /* data_ptr */ (u_int8_t *)data,
3256                       /* dxfer_len */ len,
3257                       /* sense_len */ SSD_FULL_SIZE,
3258                       sizeof(struct scsi_read_subchannel),
3259                       /* timeout */ 50000);
3260
3261         scsi_cmd = (struct scsi_read_subchannel *)&csio->cdb_io.cdb_bytes;
3262         bzero (scsi_cmd, sizeof(*scsi_cmd));
3263
3264         scsi_cmd->op_code = READ_SUBCHANNEL;
3265         if (mode == CD_MSF_FORMAT)
3266                 scsi_cmd->byte1 |= CD_MSF;
3267         scsi_cmd->byte2 = SRS_SUBQ;
3268         scsi_cmd->subchan_format = format;
3269         scsi_cmd->track = track;
3270         scsi_ulto2b(len, (u_int8_t *)scsi_cmd->data_len);
3271         scsi_cmd->control = 0;
3272
3273         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3274                          /*sense_flags*/SF_RETRY_UA);
3275
3276         xpt_release_ccb(ccb);
3277
3278         return(error);
3279 }
3280
3281
3282 /*
3283  * All MODE_SENSE requests in the cd(4) driver MUST go through this
3284  * routine.  See comments in cd6byteworkaround() for details.
3285  */
3286 static int
3287 cdgetmode(struct cam_periph *periph, struct cd_mode_params *data,
3288           u_int32_t page)
3289 {
3290         struct ccb_scsiio *csio;
3291         struct cd_softc *softc;
3292         union ccb *ccb;
3293         int param_len;
3294         int error;
3295
3296         softc = (struct cd_softc *)periph->softc;
3297
3298         ccb = cdgetccb(periph, CAM_PRIORITY_NORMAL);
3299
3300         csio = &ccb->csio;
3301
3302         data->cdb_size = softc->minimum_command_size;
3303         if (data->cdb_size < 10)
3304                 param_len = sizeof(struct cd_mode_data);
3305         else
3306                 param_len = sizeof(struct cd_mode_data_10);
3307
3308         /* Don't say we've got more room than we actually allocated */
3309         param_len = min(param_len, data->alloc_len);
3310
3311         scsi_mode_sense_len(csio,
3312                             /* retries */ cd_retry_count,
3313                             /* cbfcnp */ cddone,
3314                             /* tag_action */ MSG_SIMPLE_Q_TAG,
3315                             /* dbd */ 0,
3316                             /* page_code */ SMS_PAGE_CTRL_CURRENT,
3317                             /* page */ page,
3318                             /* param_buf */ data->mode_buf,
3319                             /* param_len */ param_len,
3320                             /* minimum_cmd_size */ softc->minimum_command_size,
3321                             /* sense_len */ SSD_FULL_SIZE,
3322                             /* timeout */ 50000);
3323
3324         /*
3325          * It would be nice not to have to do this, but there's no
3326          * available pointer in the CCB that would allow us to stuff the
3327          * mode params structure in there and retrieve it in
3328          * cd6byteworkaround(), so we can set the cdb size.  The cdb size
3329          * lets the caller know what CDB size we ended up using, so they
3330          * can find the actual mode page offset.
3331          */
3332         STAILQ_INSERT_TAIL(&softc->mode_queue, data, links);
3333
3334         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3335                          /*sense_flags*/SF_RETRY_UA);
3336
3337         xpt_release_ccb(ccb);
3338
3339         STAILQ_REMOVE(&softc->mode_queue, data, cd_mode_params, links);
3340
3341         /*
3342          * This is a bit of belt-and-suspenders checking, but if we run
3343          * into a situation where the target sends back multiple block
3344          * descriptors, we might not have enough space in the buffer to
3345          * see the whole mode page.  Better to return an error than
3346          * potentially access memory beyond our malloced region.
3347          */
3348         if (error == 0) {
3349                 u_int32_t data_len;
3350
3351                 if (data->cdb_size == 10) {
3352                         struct scsi_mode_header_10 *hdr10;
3353
3354                         hdr10 = (struct scsi_mode_header_10 *)data->mode_buf;
3355                         data_len = scsi_2btoul(hdr10->data_length);
3356                         data_len += sizeof(hdr10->data_length);
3357                 } else {
3358                         struct scsi_mode_header_6 *hdr6;
3359
3360                         hdr6 = (struct scsi_mode_header_6 *)data->mode_buf;
3361                         data_len = hdr6->data_length;
3362                         data_len += sizeof(hdr6->data_length);
3363                 }
3364
3365                 /*
3366                  * Complain if there is more mode data available than we
3367                  * allocated space for.  This could potentially happen if
3368                  * we miscalculated the page length for some reason, if the
3369                  * drive returns multiple block descriptors, or if it sets
3370                  * the data length incorrectly.
3371                  */
3372                 if (data_len > data->alloc_len) {
3373                         xpt_print(periph->path, "allocated modepage %d length "
3374                             "%d < returned length %d\n", page, data->alloc_len,
3375                             data_len);
3376                         error = ENOSPC;
3377                 }
3378         }
3379         return (error);
3380 }
3381
3382 /*
3383  * All MODE_SELECT requests in the cd(4) driver MUST go through this
3384  * routine.  See comments in cd6byteworkaround() for details.
3385  */
3386 static int
3387 cdsetmode(struct cam_periph *periph, struct cd_mode_params *data)
3388 {
3389         struct ccb_scsiio *csio;
3390         struct cd_softc *softc;
3391         union ccb *ccb;
3392         int cdb_size, param_len;
3393         int error;
3394
3395         softc = (struct cd_softc *)periph->softc;
3396
3397         ccb = cdgetccb(periph, CAM_PRIORITY_NORMAL);
3398
3399         csio = &ccb->csio;
3400
3401         error = 0;
3402
3403         /*
3404          * If the data is formatted for the 10 byte version of the mode
3405          * select parameter list, we need to use the 10 byte CDB.
3406          * Otherwise, we use whatever the stored minimum command size.
3407          */
3408         if (data->cdb_size == 10)
3409                 cdb_size = data->cdb_size;
3410         else
3411                 cdb_size = softc->minimum_command_size;
3412
3413         if (cdb_size >= 10) {
3414                 struct scsi_mode_header_10 *mode_header;
3415                 u_int32_t data_len;
3416
3417                 mode_header = (struct scsi_mode_header_10 *)data->mode_buf;
3418
3419                 data_len = scsi_2btoul(mode_header->data_length);
3420
3421                 scsi_ulto2b(0, mode_header->data_length);
3422                 /*
3423                  * SONY drives do not allow a mode select with a medium_type
3424                  * value that has just been returned by a mode sense; use a
3425                  * medium_type of 0 (Default) instead.
3426                  */
3427                 mode_header->medium_type = 0;
3428
3429                 /*
3430                  * Pass back whatever the drive passed to us, plus the size
3431                  * of the data length field.
3432                  */
3433                 param_len = data_len + sizeof(mode_header->data_length);
3434
3435         } else {
3436                 struct scsi_mode_header_6 *mode_header;
3437
3438                 mode_header = (struct scsi_mode_header_6 *)data->mode_buf;
3439
3440                 param_len = mode_header->data_length + 1;
3441
3442                 mode_header->data_length = 0;
3443                 /*
3444                  * SONY drives do not allow a mode select with a medium_type
3445                  * value that has just been returned by a mode sense; use a
3446                  * medium_type of 0 (Default) instead.
3447                  */
3448                 mode_header->medium_type = 0;
3449         }
3450
3451         /* Don't say we've got more room than we actually allocated */
3452         param_len = min(param_len, data->alloc_len);
3453
3454         scsi_mode_select_len(csio,
3455                              /* retries */ cd_retry_count,
3456                              /* cbfcnp */ cddone,
3457                              /* tag_action */ MSG_SIMPLE_Q_TAG,
3458                              /* scsi_page_fmt */ 1,
3459                              /* save_pages */ 0,
3460                              /* param_buf */ data->mode_buf,
3461                              /* param_len */ param_len,
3462                              /* minimum_cmd_size */ cdb_size,
3463                              /* sense_len */ SSD_FULL_SIZE,
3464                              /* timeout */ 50000);
3465
3466         /* See comments in cdgetmode() and cd6byteworkaround(). */
3467         STAILQ_INSERT_TAIL(&softc->mode_queue, data, links);
3468
3469         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3470                          /*sense_flags*/SF_RETRY_UA);
3471
3472         xpt_release_ccb(ccb);
3473
3474         STAILQ_REMOVE(&softc->mode_queue, data, cd_mode_params, links);
3475
3476         return (error);
3477 }
3478
3479
3480 static int
3481 cdplay(struct cam_periph *periph, u_int32_t blk, u_int32_t len)
3482 {
3483         struct ccb_scsiio *csio;
3484         union ccb *ccb;
3485         int error;
3486         u_int8_t cdb_len;
3487
3488         error = 0;
3489         ccb = cdgetccb(periph, CAM_PRIORITY_NORMAL);
3490         csio = &ccb->csio;
3491         /*
3492          * Use the smallest possible command to perform the operation.
3493          */
3494         if ((len & 0xffff0000) == 0) {
3495                 /*
3496                  * We can fit in a 10 byte cdb.
3497                  */
3498                 struct scsi_play_10 *scsi_cmd;
3499
3500                 scsi_cmd = (struct scsi_play_10 *)&csio->cdb_io.cdb_bytes;
3501                 bzero (scsi_cmd, sizeof(*scsi_cmd));
3502                 scsi_cmd->op_code = PLAY_10;
3503                 scsi_ulto4b(blk, (u_int8_t *)scsi_cmd->blk_addr);
3504                 scsi_ulto2b(len, (u_int8_t *)scsi_cmd->xfer_len);
3505                 cdb_len = sizeof(*scsi_cmd);
3506         } else  {
3507                 struct scsi_play_12 *scsi_cmd;
3508
3509                 scsi_cmd = (struct scsi_play_12 *)&csio->cdb_io.cdb_bytes;
3510                 bzero (scsi_cmd, sizeof(*scsi_cmd));
3511                 scsi_cmd->op_code = PLAY_12;
3512                 scsi_ulto4b(blk, (u_int8_t *)scsi_cmd->blk_addr);
3513                 scsi_ulto4b(len, (u_int8_t *)scsi_cmd->xfer_len);
3514                 cdb_len = sizeof(*scsi_cmd);
3515         }
3516         cam_fill_csio(csio,
3517                       /*retries*/ cd_retry_count,
3518                       cddone,
3519                       /*flags*/CAM_DIR_NONE,
3520                       MSG_SIMPLE_Q_TAG,
3521                       /*dataptr*/NULL,
3522                       /*datalen*/0,
3523                       /*sense_len*/SSD_FULL_SIZE,
3524                       cdb_len,
3525                       /*timeout*/50 * 1000);
3526
3527         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3528                          /*sense_flags*/SF_RETRY_UA);
3529
3530         xpt_release_ccb(ccb);
3531
3532         return(error);
3533 }
3534
3535 static int
3536 cdplaymsf(struct cam_periph *periph, u_int32_t startm, u_int32_t starts,
3537           u_int32_t startf, u_int32_t endm, u_int32_t ends, u_int32_t endf)
3538 {
3539         struct scsi_play_msf *scsi_cmd;
3540         struct ccb_scsiio *csio;
3541         union ccb *ccb;
3542         int error;
3543
3544         error = 0;
3545
3546         ccb = cdgetccb(periph, CAM_PRIORITY_NORMAL);
3547
3548         csio = &ccb->csio;
3549
3550         cam_fill_csio(csio,
3551                       /* retries */ cd_retry_count,
3552                       /* cbfcnp */ cddone,
3553                       /* flags */ CAM_DIR_NONE,
3554                       /* tag_action */ MSG_SIMPLE_Q_TAG,
3555                       /* data_ptr */ NULL,
3556                       /* dxfer_len */ 0,
3557                       /* sense_len */ SSD_FULL_SIZE,
3558                       sizeof(struct scsi_play_msf),
3559                       /* timeout */ 50000);
3560
3561         scsi_cmd = (struct scsi_play_msf *)&csio->cdb_io.cdb_bytes;
3562         bzero (scsi_cmd, sizeof(*scsi_cmd));
3563
3564         scsi_cmd->op_code = PLAY_MSF;
3565         scsi_cmd->start_m = startm;
3566         scsi_cmd->start_s = starts;
3567         scsi_cmd->start_f = startf;
3568         scsi_cmd->end_m = endm;
3569         scsi_cmd->end_s = ends;
3570         scsi_cmd->end_f = endf;
3571
3572         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3573                          /*sense_flags*/SF_RETRY_UA);
3574
3575         xpt_release_ccb(ccb);
3576
3577         return(error);
3578 }
3579
3580
3581 static int
3582 cdplaytracks(struct cam_periph *periph, u_int32_t strack, u_int32_t sindex,
3583              u_int32_t etrack, u_int32_t eindex)
3584 {
3585         struct scsi_play_track *scsi_cmd;
3586         struct ccb_scsiio *csio;
3587         union ccb *ccb;
3588         int error;
3589
3590         error = 0;
3591
3592         ccb = cdgetccb(periph, CAM_PRIORITY_NORMAL);
3593
3594         csio = &ccb->csio;
3595
3596         cam_fill_csio(csio,
3597                       /* retries */ cd_retry_count,
3598                       /* cbfcnp */ cddone,
3599                       /* flags */ CAM_DIR_NONE,
3600                       /* tag_action */ MSG_SIMPLE_Q_TAG,
3601                       /* data_ptr */ NULL,
3602                       /* dxfer_len */ 0,
3603                       /* sense_len */ SSD_FULL_SIZE,
3604                       sizeof(struct scsi_play_track),
3605                       /* timeout */ 50000);
3606
3607         scsi_cmd = (struct scsi_play_track *)&csio->cdb_io.cdb_bytes;
3608         bzero (scsi_cmd, sizeof(*scsi_cmd));
3609
3610         scsi_cmd->op_code = PLAY_TRACK;
3611         scsi_cmd->start_track = strack;
3612         scsi_cmd->start_index = sindex;
3613         scsi_cmd->end_track = etrack;
3614         scsi_cmd->end_index = eindex;
3615
3616         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3617                          /*sense_flags*/SF_RETRY_UA);
3618
3619         xpt_release_ccb(ccb);
3620
3621         return(error);
3622 }
3623
3624 static int
3625 cdpause(struct cam_periph *periph, u_int32_t go)
3626 {
3627         struct scsi_pause *scsi_cmd;
3628         struct ccb_scsiio *csio;
3629         union ccb *ccb;
3630         int error;
3631
3632         error = 0;
3633
3634         ccb = cdgetccb(periph, CAM_PRIORITY_NORMAL);
3635
3636         csio = &ccb->csio;
3637
3638         cam_fill_csio(csio,
3639                       /* retries */ cd_retry_count,
3640                       /* cbfcnp */ cddone,
3641                       /* flags */ CAM_DIR_NONE,
3642                       /* tag_action */ MSG_SIMPLE_Q_TAG,
3643                       /* data_ptr */ NULL,
3644                       /* dxfer_len */ 0,
3645                       /* sense_len */ SSD_FULL_SIZE,
3646                       sizeof(struct scsi_pause),
3647                       /* timeout */ 50000);
3648
3649         scsi_cmd = (struct scsi_pause *)&csio->cdb_io.cdb_bytes;
3650         bzero (scsi_cmd, sizeof(*scsi_cmd));
3651
3652         scsi_cmd->op_code = PAUSE;
3653         scsi_cmd->resume = go;
3654
3655         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3656                          /*sense_flags*/SF_RETRY_UA);
3657
3658         xpt_release_ccb(ccb);
3659
3660         return(error);
3661 }
3662
3663 static int
3664 cdstartunit(struct cam_periph *periph, int load)
3665 {
3666         union ccb *ccb;
3667         int error;
3668
3669         error = 0;
3670
3671         ccb = cdgetccb(periph, CAM_PRIORITY_NORMAL);
3672
3673         scsi_start_stop(&ccb->csio,
3674                         /* retries */ cd_retry_count,
3675                         /* cbfcnp */ cddone,
3676                         /* tag_action */ MSG_SIMPLE_Q_TAG,
3677                         /* start */ TRUE,
3678                         /* load_eject */ load,
3679                         /* immediate */ FALSE,
3680                         /* sense_len */ SSD_FULL_SIZE,
3681                         /* timeout */ 50000);
3682
3683         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3684                          /*sense_flags*/SF_RETRY_UA);
3685
3686         xpt_release_ccb(ccb);
3687
3688         return(error);
3689 }
3690
3691 static int
3692 cdstopunit(struct cam_periph *periph, u_int32_t eject)
3693 {
3694         union ccb *ccb;
3695         int error;
3696
3697         error = 0;
3698
3699         ccb = cdgetccb(periph, CAM_PRIORITY_NORMAL);
3700
3701         scsi_start_stop(&ccb->csio,
3702                         /* retries */ cd_retry_count,
3703                         /* cbfcnp */ cddone,
3704                         /* tag_action */ MSG_SIMPLE_Q_TAG,
3705                         /* start */ FALSE,
3706                         /* load_eject */ eject,
3707                         /* immediate */ FALSE,
3708                         /* sense_len */ SSD_FULL_SIZE,
3709                         /* timeout */ 50000);
3710
3711         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3712                          /*sense_flags*/SF_RETRY_UA);
3713
3714         xpt_release_ccb(ccb);
3715
3716         return(error);
3717 }
3718
3719 static int
3720 cdsetspeed(struct cam_periph *periph, u_int32_t rdspeed, u_int32_t wrspeed)
3721 {
3722         struct scsi_set_speed *scsi_cmd;
3723         struct ccb_scsiio *csio;
3724         union ccb *ccb;
3725         int error;
3726
3727         error = 0;
3728         ccb = cdgetccb(periph, CAM_PRIORITY_NORMAL);
3729         csio = &ccb->csio;
3730
3731         /* Preserve old behavior: units in multiples of CDROM speed */
3732         if (rdspeed < 177)
3733                 rdspeed *= 177;
3734         if (wrspeed < 177)
3735                 wrspeed *= 177;
3736
3737         cam_fill_csio(csio,
3738                       /* retries */ cd_retry_count,
3739                       /* cbfcnp */ cddone,
3740                       /* flags */ CAM_DIR_NONE,
3741                       /* tag_action */ MSG_SIMPLE_Q_TAG,
3742                       /* data_ptr */ NULL,
3743                       /* dxfer_len */ 0,
3744                       /* sense_len */ SSD_FULL_SIZE,
3745                       sizeof(struct scsi_set_speed),
3746                       /* timeout */ 50000);
3747
3748         scsi_cmd = (struct scsi_set_speed *)&csio->cdb_io.cdb_bytes;
3749         bzero(scsi_cmd, sizeof(*scsi_cmd));
3750
3751         scsi_cmd->opcode = SET_CD_SPEED;
3752         scsi_ulto2b(rdspeed, scsi_cmd->readspeed);
3753         scsi_ulto2b(wrspeed, scsi_cmd->writespeed);
3754
3755         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3756                          /*sense_flags*/SF_RETRY_UA);
3757
3758         xpt_release_ccb(ccb);
3759
3760         return(error);
3761 }
3762
3763 static int
3764 cdreportkey(struct cam_periph *periph, struct dvd_authinfo *authinfo)
3765 {
3766         union ccb *ccb;
3767         u_int8_t *databuf;
3768         u_int32_t lba;
3769         int error;
3770         int length;
3771
3772         error = 0;
3773         databuf = NULL;
3774         lba = 0;
3775
3776         switch (authinfo->format) {
3777         case DVD_REPORT_AGID:
3778                 length = sizeof(struct scsi_report_key_data_agid);
3779                 break;
3780         case DVD_REPORT_CHALLENGE:
3781                 length = sizeof(struct scsi_report_key_data_challenge);
3782                 break;
3783         case DVD_REPORT_KEY1:
3784                 length = sizeof(struct scsi_report_key_data_key1_key2);
3785                 break;
3786         case DVD_REPORT_TITLE_KEY:
3787                 length = sizeof(struct scsi_report_key_data_title);
3788                 /* The lba field is only set for the title key */
3789                 lba = authinfo->lba;
3790                 break;
3791         case DVD_REPORT_ASF:
3792                 length = sizeof(struct scsi_report_key_data_asf);
3793                 break;
3794         case DVD_REPORT_RPC:
3795                 length = sizeof(struct scsi_report_key_data_rpc);
3796                 break;
3797         case DVD_INVALIDATE_AGID:
3798                 length = 0;
3799                 break;
3800         default:
3801                 return (EINVAL);
3802         }
3803
3804         if (length != 0) {
3805                 databuf = malloc(length, M_DEVBUF, M_WAITOK | M_ZERO);
3806         } else
3807                 databuf = NULL;
3808
3809         cam_periph_lock(periph);
3810         ccb = cdgetccb(periph, CAM_PRIORITY_NORMAL);
3811
3812         scsi_report_key(&ccb->csio,
3813                         /* retries */ cd_retry_count,
3814                         /* cbfcnp */ cddone,
3815                         /* tag_action */ MSG_SIMPLE_Q_TAG,
3816                         /* lba */ lba,
3817                         /* agid */ authinfo->agid,
3818                         /* key_format */ authinfo->format,
3819                         /* data_ptr */ databuf,
3820                         /* dxfer_len */ length,
3821                         /* sense_len */ SSD_FULL_SIZE,
3822                         /* timeout */ 50000);
3823
3824         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3825                          /*sense_flags*/SF_RETRY_UA);
3826
3827         if (error != 0)
3828                 goto bailout;
3829
3830         if (ccb->csio.resid != 0) {
3831                 xpt_print(periph->path, "warning, residual for report key "
3832                     "command is %d\n", ccb->csio.resid);
3833         }
3834
3835         switch(authinfo->format) {
3836         case DVD_REPORT_AGID: {
3837                 struct scsi_report_key_data_agid *agid_data;
3838
3839                 agid_data = (struct scsi_report_key_data_agid *)databuf;
3840
3841                 authinfo->agid = (agid_data->agid & RKD_AGID_MASK) >>
3842                         RKD_AGID_SHIFT;
3843                 break;
3844         }
3845         case DVD_REPORT_CHALLENGE: {
3846                 struct scsi_report_key_data_challenge *chal_data;
3847
3848                 chal_data = (struct scsi_report_key_data_challenge *)databuf;
3849
3850                 bcopy(chal_data->challenge_key, authinfo->keychal,
3851                       min(sizeof(chal_data->challenge_key),
3852                           sizeof(authinfo->keychal)));
3853                 break;
3854         }
3855         case DVD_REPORT_KEY1: {
3856                 struct scsi_report_key_data_key1_key2 *key1_data;
3857
3858                 key1_data = (struct scsi_report_key_data_key1_key2 *)databuf;
3859
3860                 bcopy(key1_data->key1, authinfo->keychal,
3861                       min(sizeof(key1_data->key1), sizeof(authinfo->keychal)));
3862                 break;
3863         }
3864         case DVD_REPORT_TITLE_KEY: {
3865                 struct scsi_report_key_data_title *title_data;
3866
3867                 title_data = (struct scsi_report_key_data_title *)databuf;
3868
3869                 authinfo->cpm = (title_data->byte0 & RKD_TITLE_CPM) >>
3870                         RKD_TITLE_CPM_SHIFT;
3871                 authinfo->cp_sec = (title_data->byte0 & RKD_TITLE_CP_SEC) >>
3872                         RKD_TITLE_CP_SEC_SHIFT;
3873                 authinfo->cgms = (title_data->byte0 & RKD_TITLE_CMGS_MASK) >>
3874                         RKD_TITLE_CMGS_SHIFT;
3875                 bcopy(title_data->title_key, authinfo->keychal,
3876                       min(sizeof(title_data->title_key),
3877                           sizeof(authinfo->keychal)));
3878                 break;
3879         }
3880         case DVD_REPORT_ASF: {
3881                 struct scsi_report_key_data_asf *asf_data;
3882
3883                 asf_data = (struct scsi_report_key_data_asf *)databuf;
3884
3885                 authinfo->asf = asf_data->success & RKD_ASF_SUCCESS;
3886                 break;
3887         }
3888         case DVD_REPORT_RPC: {
3889                 struct scsi_report_key_data_rpc *rpc_data;
3890
3891                 rpc_data = (struct scsi_report_key_data_rpc *)databuf;
3892
3893                 authinfo->reg_type = (rpc_data->byte4 & RKD_RPC_TYPE_MASK) >>
3894                         RKD_RPC_TYPE_SHIFT;
3895                 authinfo->vend_rsts =
3896                         (rpc_data->byte4 & RKD_RPC_VENDOR_RESET_MASK) >>
3897                         RKD_RPC_VENDOR_RESET_SHIFT;
3898                 authinfo->user_rsts = rpc_data->byte4 & RKD_RPC_USER_RESET_MASK;
3899                 authinfo->region = rpc_data->region_mask;
3900                 authinfo->rpc_scheme = rpc_data->rpc_scheme1;
3901                 break;
3902         }
3903         case DVD_INVALIDATE_AGID:
3904                 break;
3905         default:
3906                 /* This should be impossible, since we checked above */
3907                 error = EINVAL;
3908                 goto bailout;
3909                 break; /* NOTREACHED */
3910         }
3911
3912 bailout:
3913         xpt_release_ccb(ccb);
3914         cam_periph_unlock(periph);
3915
3916         if (databuf != NULL)
3917                 free(databuf, M_DEVBUF);
3918
3919         return(error);
3920 }
3921
3922 static int
3923 cdsendkey(struct cam_periph *periph, struct dvd_authinfo *authinfo)
3924 {
3925         union ccb *ccb;
3926         u_int8_t *databuf;
3927         int length;
3928         int error;
3929
3930         error = 0;
3931         databuf = NULL;
3932
3933         switch(authinfo->format) {
3934         case DVD_SEND_CHALLENGE: {
3935                 struct scsi_report_key_data_challenge *challenge_data;
3936
3937                 length = sizeof(*challenge_data);
3938
3939                 challenge_data = malloc(length, M_DEVBUF, M_WAITOK | M_ZERO);
3940
3941                 databuf = (u_int8_t *)challenge_data;
3942
3943                 scsi_ulto2b(length - sizeof(challenge_data->data_len),
3944                             challenge_data->data_len);
3945
3946                 bcopy(authinfo->keychal, challenge_data->challenge_key,
3947                       min(sizeof(authinfo->keychal),
3948                           sizeof(challenge_data->challenge_key)));
3949                 break;
3950         }
3951         case DVD_SEND_KEY2: {
3952                 struct scsi_report_key_data_key1_key2 *key2_data;
3953
3954                 length = sizeof(*key2_data);
3955
3956                 key2_data = malloc(length, M_DEVBUF, M_WAITOK | M_ZERO);
3957
3958                 databuf = (u_int8_t *)key2_data;
3959
3960                 scsi_ulto2b(length - sizeof(key2_data->data_len),
3961                             key2_data->data_len);
3962
3963                 bcopy(authinfo->keychal, key2_data->key1,
3964                       min(sizeof(authinfo->keychal), sizeof(key2_data->key1)));
3965
3966                 break;
3967         }
3968         case DVD_SEND_RPC: {
3969                 struct scsi_send_key_data_rpc *rpc_data;
3970
3971                 length = sizeof(*rpc_data);
3972
3973                 rpc_data = malloc(length, M_DEVBUF, M_WAITOK | M_ZERO);
3974
3975                 databuf = (u_int8_t *)rpc_data;
3976
3977                 scsi_ulto2b(length - sizeof(rpc_data->data_len),
3978                             rpc_data->data_len);
3979
3980                 rpc_data->region_code = authinfo->region;
3981                 break;
3982         }
3983         default:
3984                 return (EINVAL);
3985         }
3986
3987         cam_periph_lock(periph);
3988         ccb = cdgetccb(periph, CAM_PRIORITY_NORMAL);
3989
3990         scsi_send_key(&ccb->csio,
3991                       /* retries */ cd_retry_count,
3992                       /* cbfcnp */ cddone,
3993                       /* tag_action */ MSG_SIMPLE_Q_TAG,
3994                       /* agid */ authinfo->agid,
3995                       /* key_format */ authinfo->format,
3996                       /* data_ptr */ databuf,
3997                       /* dxfer_len */ length,
3998                       /* sense_len */ SSD_FULL_SIZE,
3999                       /* timeout */ 50000);
4000
4001         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
4002                          /*sense_flags*/SF_RETRY_UA);
4003
4004         xpt_release_ccb(ccb);
4005         cam_periph_unlock(periph);
4006
4007         if (databuf != NULL)
4008                 free(databuf, M_DEVBUF);
4009
4010         return(error);
4011 }
4012
4013 static int
4014 cdreaddvdstructure(struct cam_periph *periph, struct dvd_struct *dvdstruct)
4015 {
4016         union ccb *ccb;
4017         u_int8_t *databuf;
4018         u_int32_t address;
4019         int error;
4020         int length;
4021
4022         error = 0;
4023         databuf = NULL;
4024         /* The address is reserved for many of the formats */
4025         address = 0;
4026
4027         switch(dvdstruct->format) {
4028         case DVD_STRUCT_PHYSICAL:
4029                 length = sizeof(struct scsi_read_dvd_struct_data_physical);
4030                 break;
4031         case DVD_STRUCT_COPYRIGHT:
4032                 length = sizeof(struct scsi_read_dvd_struct_data_copyright);
4033                 break;
4034         case DVD_STRUCT_DISCKEY:
4035                 length = sizeof(struct scsi_read_dvd_struct_data_disc_key);
4036                 break;
4037         case DVD_STRUCT_BCA:
4038                 length = sizeof(struct scsi_read_dvd_struct_data_bca);
4039                 break;
4040         case DVD_STRUCT_MANUFACT:
4041                 length = sizeof(struct scsi_read_dvd_struct_data_manufacturer);
4042                 break;
4043         case DVD_STRUCT_CMI:
4044                 return (ENODEV);
4045         case DVD_STRUCT_PROTDISCID:
4046                 length = sizeof(struct scsi_read_dvd_struct_data_prot_discid);
4047                 break;
4048         case DVD_STRUCT_DISCKEYBLOCK:
4049                 length = sizeof(struct scsi_read_dvd_struct_data_disc_key_blk);
4050                 break;
4051         case DVD_STRUCT_DDS:
4052                 length = sizeof(struct scsi_read_dvd_struct_data_dds);
4053                 break;
4054         case DVD_STRUCT_MEDIUM_STAT:
4055                 length = sizeof(struct scsi_read_dvd_struct_data_medium_status);
4056                 break;
4057         case DVD_STRUCT_SPARE_AREA:
4058                 length = sizeof(struct scsi_read_dvd_struct_data_spare_area);
4059                 break;
4060         case DVD_STRUCT_RMD_LAST:
4061                 return (ENODEV);
4062         case DVD_STRUCT_RMD_RMA:
4063                 return (ENODEV);
4064         case DVD_STRUCT_PRERECORDED:
4065                 length = sizeof(struct scsi_read_dvd_struct_data_leadin);
4066                 break;
4067         case DVD_STRUCT_UNIQUEID:
4068                 length = sizeof(struct scsi_read_dvd_struct_data_disc_id);
4069                 break;
4070         case DVD_STRUCT_DCB:
4071                 return (ENODEV);
4072         case DVD_STRUCT_LIST:
4073                 /*
4074                  * This is the maximum allocation length for the READ DVD
4075                  * STRUCTURE command.  There's nothing in the MMC3 spec
4076                  * that indicates a limit in the amount of data that can
4077                  * be returned from this call, other than the limits
4078                  * imposed by the 2-byte length variables.
4079                  */
4080                 length = 65535;
4081                 break;
4082         default:
4083                 return (EINVAL);
4084         }
4085
4086         if (length != 0) {
4087                 databuf = malloc(length, M_DEVBUF, M_WAITOK | M_ZERO);
4088         } else
4089                 databuf = NULL;
4090
4091         cam_periph_lock(periph);
4092         ccb = cdgetccb(periph, CAM_PRIORITY_NORMAL);
4093
4094         scsi_read_dvd_structure(&ccb->csio,
4095                                 /* retries */ cd_retry_count,
4096                                 /* cbfcnp */ cddone,
4097                                 /* tag_action */ MSG_SIMPLE_Q_TAG,
4098                                 /* lba */ address,
4099                                 /* layer_number */ dvdstruct->layer_num,
4100                                 /* key_format */ dvdstruct->format,
4101                                 /* agid */ dvdstruct->agid,
4102                                 /* data_ptr */ databuf,
4103                                 /* dxfer_len */ length,
4104                                 /* sense_len */ SSD_FULL_SIZE,
4105                                 /* timeout */ 50000);
4106
4107         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
4108                          /*sense_flags*/SF_RETRY_UA);
4109
4110         if (error != 0)
4111                 goto bailout;
4112
4113         switch(dvdstruct->format) {
4114         case DVD_STRUCT_PHYSICAL: {
4115                 struct scsi_read_dvd_struct_data_layer_desc *inlayer;
4116                 struct dvd_layer *outlayer;
4117                 struct scsi_read_dvd_struct_data_physical *phys_data;
4118
4119                 phys_data =
4120                         (struct scsi_read_dvd_struct_data_physical *)databuf;
4121                 inlayer = &phys_data->layer_desc;
4122                 outlayer = (struct dvd_layer *)&dvdstruct->data;
4123
4124                 dvdstruct->length = sizeof(*inlayer);
4125
4126                 outlayer->book_type = (inlayer->book_type_version &
4127                         RDSD_BOOK_TYPE_MASK) >> RDSD_BOOK_TYPE_SHIFT;
4128                 outlayer->book_version = (inlayer->book_type_version &
4129                         RDSD_BOOK_VERSION_MASK);
4130                 outlayer->disc_size = (inlayer->disc_size_max_rate &
4131                         RDSD_DISC_SIZE_MASK) >> RDSD_DISC_SIZE_SHIFT;
4132                 outlayer->max_rate = (inlayer->disc_size_max_rate &
4133                         RDSD_MAX_RATE_MASK);
4134                 outlayer->nlayers = (inlayer->layer_info &
4135                         RDSD_NUM_LAYERS_MASK) >> RDSD_NUM_LAYERS_SHIFT;
4136                 outlayer->track_path = (inlayer->layer_info &
4137                         RDSD_TRACK_PATH_MASK) >> RDSD_TRACK_PATH_SHIFT;
4138                 outlayer->layer_type = (inlayer->layer_info &
4139                         RDSD_LAYER_TYPE_MASK);
4140                 outlayer->linear_density = (inlayer->density &
4141                         RDSD_LIN_DENSITY_MASK) >> RDSD_LIN_DENSITY_SHIFT;
4142                 outlayer->track_density = (inlayer->density &
4143                         RDSD_TRACK_DENSITY_MASK);
4144                 outlayer->bca = (inlayer->bca & RDSD_BCA_MASK) >>
4145                         RDSD_BCA_SHIFT;
4146                 outlayer->start_sector = scsi_3btoul(inlayer->main_data_start);
4147                 outlayer->end_sector = scsi_3btoul(inlayer->main_data_end);
4148                 outlayer->end_sector_l0 =
4149                         scsi_3btoul(inlayer->end_sector_layer0);
4150                 break;
4151         }
4152         case DVD_STRUCT_COPYRIGHT: {
4153                 struct scsi_read_dvd_struct_data_copyright *copy_data;
4154
4155                 copy_data = (struct scsi_read_dvd_struct_data_copyright *)
4156                         databuf;
4157
4158                 dvdstruct->cpst = copy_data->cps_type;
4159                 dvdstruct->rmi = copy_data->region_info;
4160                 dvdstruct->length = 0;
4161
4162                 break;
4163         }
4164         default:
4165                 /*
4166                  * Tell the user what the overall length is, no matter
4167                  * what we can actually fit in the data buffer.
4168                  */
4169                 dvdstruct->length = length - ccb->csio.resid -
4170                         sizeof(struct scsi_read_dvd_struct_data_header);
4171
4172                 /*
4173                  * But only actually copy out the smaller of what we read
4174                  * in or what the structure can take.
4175                  */
4176                 bcopy(databuf + sizeof(struct scsi_read_dvd_struct_data_header),
4177                       dvdstruct->data,
4178                       min(sizeof(dvdstruct->data), dvdstruct->length));
4179                 break;
4180         }
4181
4182 bailout:
4183         xpt_release_ccb(ccb);
4184         cam_periph_unlock(periph);
4185
4186         if (databuf != NULL)
4187                 free(databuf, M_DEVBUF);
4188
4189         return(error);
4190 }
4191
4192 void
4193 scsi_report_key(struct ccb_scsiio *csio, u_int32_t retries,
4194                 void (*cbfcnp)(struct cam_periph *, union ccb *),
4195                 u_int8_t tag_action, u_int32_t lba, u_int8_t agid,
4196                 u_int8_t key_format, u_int8_t *data_ptr, u_int32_t dxfer_len,
4197                 u_int8_t sense_len, u_int32_t timeout)
4198 {
4199         struct scsi_report_key *scsi_cmd;
4200
4201         scsi_cmd = (struct scsi_report_key *)&csio->cdb_io.cdb_bytes;
4202         bzero(scsi_cmd, sizeof(*scsi_cmd));
4203         scsi_cmd->opcode = REPORT_KEY;
4204         scsi_ulto4b(lba, scsi_cmd->lba);
4205         scsi_ulto2b(dxfer_len, scsi_cmd->alloc_len);
4206         scsi_cmd->agid_keyformat = (agid << RK_KF_AGID_SHIFT) |
4207                 (key_format & RK_KF_KEYFORMAT_MASK);
4208
4209         cam_fill_csio(csio,
4210                       retries,
4211                       cbfcnp,
4212                       /*flags*/ (dxfer_len == 0) ? CAM_DIR_NONE : CAM_DIR_IN,
4213                       tag_action,
4214                       /*data_ptr*/ data_ptr,
4215                       /*dxfer_len*/ dxfer_len,
4216                       sense_len,
4217                       sizeof(*scsi_cmd),
4218                       timeout);
4219 }
4220
4221 void
4222 scsi_send_key(struct ccb_scsiio *csio, u_int32_t retries,
4223               void (*cbfcnp)(struct cam_periph *, union ccb *),
4224               u_int8_t tag_action, u_int8_t agid, u_int8_t key_format,
4225               u_int8_t *data_ptr, u_int32_t dxfer_len, u_int8_t sense_len,
4226               u_int32_t timeout)
4227 {
4228         struct scsi_send_key *scsi_cmd;
4229
4230         scsi_cmd = (struct scsi_send_key *)&csio->cdb_io.cdb_bytes;
4231         bzero(scsi_cmd, sizeof(*scsi_cmd));
4232         scsi_cmd->opcode = SEND_KEY;
4233
4234         scsi_ulto2b(dxfer_len, scsi_cmd->param_len);
4235         scsi_cmd->agid_keyformat = (agid << RK_KF_AGID_SHIFT) |
4236                 (key_format & RK_KF_KEYFORMAT_MASK);
4237
4238         cam_fill_csio(csio,
4239                       retries,
4240                       cbfcnp,
4241                       /*flags*/ CAM_DIR_OUT,
4242                       tag_action,
4243                       /*data_ptr*/ data_ptr,
4244                       /*dxfer_len*/ dxfer_len,
4245                       sense_len,
4246                       sizeof(*scsi_cmd),
4247                       timeout);
4248 }
4249
4250
4251 void
4252 scsi_read_dvd_structure(struct ccb_scsiio *csio, u_int32_t retries,
4253                         void (*cbfcnp)(struct cam_periph *, union ccb *),
4254                         u_int8_t tag_action, u_int32_t address,
4255                         u_int8_t layer_number, u_int8_t format, u_int8_t agid,
4256                         u_int8_t *data_ptr, u_int32_t dxfer_len,
4257                         u_int8_t sense_len, u_int32_t timeout)
4258 {
4259         struct scsi_read_dvd_structure *scsi_cmd;
4260
4261         scsi_cmd = (struct scsi_read_dvd_structure *)&csio->cdb_io.cdb_bytes;
4262         bzero(scsi_cmd, sizeof(*scsi_cmd));
4263         scsi_cmd->opcode = READ_DVD_STRUCTURE;
4264
4265         scsi_ulto4b(address, scsi_cmd->address);
4266         scsi_cmd->layer_number = layer_number;
4267         scsi_cmd->format = format;
4268         scsi_ulto2b(dxfer_len, scsi_cmd->alloc_len);
4269         /* The AGID is the top two bits of this byte */
4270         scsi_cmd->agid = agid << 6;
4271
4272         cam_fill_csio(csio,
4273                       retries,
4274                       cbfcnp,
4275                       /*flags*/ CAM_DIR_IN,
4276                       tag_action,
4277                       /*data_ptr*/ data_ptr,
4278                       /*dxfer_len*/ dxfer_len,
4279                       sense_len,
4280                       sizeof(*scsi_cmd),
4281                       timeout);
4282 }