sys/bus/cam/scsi/scsi_cd.c

   1 /*
   2  * Copyright (c) 1997 Justin T. Gibbs.
   3  * Copyright (c) 1997, 1998, 1999, 2000, 2001, 2003, 2003 Kenneth D. Merry.
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions, and the following disclaimer,
  11  *    without modification, immediately at the beginning of the file.
  12  * 2. The name of the author may not be used to endorse or promote products
  13  *    derived from this software without specific prior written permission.
  14  *
  15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  16  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  17  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  18  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
  19  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  20  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  21  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  23  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  25  * SUCH DAMAGE.
  26  *
  27  * $FreeBSD: src/sys/cam/scsi/scsi_cd.c,v 1.31.2.16 2003/10/21 22:26:11 thomas Exp $
  28  * $DragonFly: src/sys/bus/cam/scsi/scsi_cd.c,v 1.10 2003/12/29 06:42:10 dillon Exp $
  29  */
  30 /*
  31  * Portions of this driver taken from the original FreeBSD cd driver.
  32  * Written by Julian Elischer (julian@tfs.com)
  33  * for TRW Financial Systems for use under the MACH(2.5) operating system.
  34  *
  35  * TRW Financial Systems, in accordance with their agreement with Carnegie
  36  * Mellon University, makes this software available to CMU to distribute
  37  * or use in any manner that they see fit as long as this message is kept with
  38  * the software. For this reason TFS also grants any other persons or
  39  * organisations permission to use or modify this software.
  40  *
  41  * TFS supplies this software to be publicly redistributed
  42  * on the understanding that TFS is not responsible for the correct
  43  * functioning of this software in any circumstances.
  44  *
  45  * Ported to run under 386BSD by Julian Elischer (julian@tfs.com) Sept 1992
  46  *
  47  *      from: cd.c,v 1.83 1997/05/04 15:24:22 joerg Exp $
  48  */
  49
  50 #include "opt_cd.h"
  51
  52 #include <sys/param.h>
  53 #include <sys/bootmaj.h>
  54 #include <sys/systm.h>
  55 #include <sys/kernel.h>
  56 #include <sys/buf.h>
  57 #include <sys/conf.h>
  58 #include <sys/disk.h>
  59 #include <sys/malloc.h>
  60 #include <sys/cdio.h>
  61 #include <sys/cdrio.h>
  62 #include <sys/dvdio.h>
  63 #include <sys/devicestat.h>
  64 #include <sys/sysctl.h>
  65 #include <sys/taskqueue.h>
  66 #include <sys/proc.h>
  67 #include <sys/buf2.h>
  68
  69 #include "../cam.h"
  70 #include "../cam_ccb.h"
  71 #include "../cam_extend.h"
  72 #include "../cam_periph.h"
  73 #include "../cam_xpt_periph.h"
  74 #include "../cam_queue.h"
  75
  76 #include "scsi_message.h"
  77 #include "scsi_da.h"
  78 #include "scsi_cd.h"
  79
  80 #define LEADOUT         0xaa            /* leadout toc entry */
  81
  82 struct cd_params {
  83         u_int32_t blksize;
  84         u_long    disksize;
  85 };
  86
  87 typedef enum {
  88         CD_Q_NONE               = 0x00,
  89         CD_Q_NO_TOUCH           = 0x01,
  90         CD_Q_BCD_TRACKS         = 0x02,
  91         CD_Q_NO_CHANGER         = 0x04,
  92         CD_Q_CHANGER            = 0x08,
  93         CD_Q_10_BYTE_ONLY       = 0x10
  94 } cd_quirks;
  95
  96 typedef enum {
  97         CD_FLAG_INVALID         = 0x0001,
  98         CD_FLAG_NEW_DISC        = 0x0002,
  99         CD_FLAG_DISC_LOCKED     = 0x0004,
 100         CD_FLAG_DISC_REMOVABLE  = 0x0008,
 101         CD_FLAG_TAGGED_QUEUING  = 0x0010,
 102         CD_FLAG_CHANGER         = 0x0040,
 103         CD_FLAG_ACTIVE          = 0x0080,
 104         CD_FLAG_SCHED_ON_COMP   = 0x0100,
 105         CD_FLAG_RETRY_UA        = 0x0200,
 106         CD_FLAG_VALID_MEDIA     = 0x0400,
 107         CD_FLAG_VALID_TOC       = 0x0800,
 108         CD_FLAG_OPEN            = 0x1000,
 109         CD_FLAG_SCTX_INIT       = 0x2000
 110 } cd_flags;
 111
 112 typedef enum {
 113         CD_CCB_PROBE            = 0x01,
 114         CD_CCB_BUFFER_IO        = 0x02,
 115         CD_CCB_WAITING          = 0x03,
 116         CD_CCB_TYPE_MASK        = 0x0F,
 117         CD_CCB_RETRY_UA         = 0x10
 118 } cd_ccb_state;
 119
 120 typedef enum {
 121         CHANGER_TIMEOUT_SCHED           = 0x01,
 122         CHANGER_SHORT_TMOUT_SCHED       = 0x02,
 123         CHANGER_MANUAL_CALL             = 0x04,
 124         CHANGER_NEED_TIMEOUT            = 0x08
 125 } cd_changer_flags;
 126
 127 #define ccb_state ppriv_field0
 128 #define ccb_bp ppriv_ptr1
 129
 130 struct cd_tocdata {
 131         struct ioc_toc_header header;
 132         struct cd_toc_entry entries[100];
 133 };
 134
 135 struct cd_toc_single {
 136         struct ioc_toc_header header;
 137         struct cd_toc_entry entry;
 138 };
 139
 140 typedef enum {
 141         CD_STATE_PROBE,
 142         CD_STATE_NORMAL
 143 } cd_state;
 144
 145 struct cd_softc {
 146         cam_pinfo               pinfo;
 147         cd_state                state;
 148         volatile cd_flags       flags;
 149         struct buf_queue_head   buf_queue;
 150         LIST_HEAD(, ccb_hdr)    pending_ccbs;
 151         struct cd_params        params;
 152         struct disk             disk;
 153         union ccb               saved_ccb;
 154         cd_quirks               quirks;
 155         struct devstat          device_stats;
 156         STAILQ_ENTRY(cd_softc)  changer_links;
 157         struct cdchanger        *changer;
 158         int                     bufs_left;
 159         struct cam_periph       *periph;
 160         int                     minimum_command_size;
 161         struct task             sysctl_task;
 162         struct sysctl_ctx_list  sysctl_ctx;
 163         struct sysctl_oid       *sysctl_tree;
 164         STAILQ_HEAD(, cd_mode_params)   mode_queue;
 165         struct cd_tocdata       toc;
 166 };
 167
 168 struct cd_page_sizes {
 169         int page;
 170         int page_size;
 171 };
 172
 173 static struct cd_page_sizes cd_page_size_table[] =
 174 {
 175         { AUDIO_PAGE, sizeof(struct cd_audio_page)}
 176 };
 177
 178 struct cd_quirk_entry {
 179         struct scsi_inquiry_pattern inq_pat;
 180         cd_quirks quirks;
 181 };
 182
 183 /*
 184  * The changer quirk entries aren't strictly necessary.  Basically, what
 185  * they do is tell cdregister() up front that a device is a changer.
 186  * Otherwise, it will figure that fact out once it sees a LUN on the device
 187  * that is greater than 0.  If it is known up front that a device is a changer,
 188  * all I/O to the device will go through the changer scheduling routines, as
 189  * opposed to the "normal" CD code.
 190  *
 191  * NOTE ON 10_BYTE_ONLY quirks:  Any 10_BYTE_ONLY quirks MUST be because
 192  * your device hangs when it gets a 10 byte command.  Adding a quirk just
 193  * to get rid of the informative diagnostic message is not acceptable.  All
 194  * 10_BYTE_ONLY quirks must be documented in full in a PR (which should be
 195  * referenced in a comment along with the quirk) , and must be approved by
 196  * ken@FreeBSD.org.  Any quirks added that don't adhere to this policy may
 197  * be removed until the submitter can explain why they are needed.
 198  * 10_BYTE_ONLY quirks will be removed (as they will no longer be necessary)
 199  * when the CAM_NEW_TRAN_CODE work is done.
 200  */
 201 static struct cd_quirk_entry cd_quirk_table[] =
 202 {
 203         {
 204                 { T_CDROM, SIP_MEDIA_REMOVABLE, "NRC", "MBR-7", "*"},
 205                  /*quirks*/ CD_Q_CHANGER
 206         },
 207         {
 208                 { T_CDROM, SIP_MEDIA_REMOVABLE, "PIONEER", "CD-ROM DRM*",
 209                   "*"}, /* quirks */ CD_Q_CHANGER
 210         },
 211         {
 212                 { T_CDROM, SIP_MEDIA_REMOVABLE, "NAKAMICH", "MJ-*", "*"},
 213                  /* quirks */ CD_Q_CHANGER
 214         },
 215         {
 216                 { T_CDROM, SIP_MEDIA_REMOVABLE, "CHINON", "CD-ROM CDS-535","*"},
 217                 /* quirks */ CD_Q_BCD_TRACKS
 218         }
 219 };
 220
 221 static  d_open_t        cdopen;
 222 static  d_close_t       cdclose;
 223 static  d_ioctl_t       cdioctl;
 224 static  d_strategy_t    cdstrategy;
 225
 226 static  periph_init_t   cdinit;
 227 static  periph_ctor_t   cdregister;
 228 static  periph_dtor_t   cdcleanup;
 229 static  periph_start_t  cdstart;
 230 static  periph_oninv_t  cdoninvalidate;
 231 static  void            cdasync(void *callback_arg, u_int32_t code,
 232                                 struct cam_path *path, void *arg);
 233 static  int             cdcmdsizesysctl(SYSCTL_HANDLER_ARGS);
 234 static  void            cdshorttimeout(void *arg);
 235 static  void            cdschedule(struct cam_periph *periph, int priority);
 236 static  void            cdrunchangerqueue(void *arg);
 237 static  void            cdchangerschedule(struct cd_softc *softc);
 238 static  int             cdrunccb(union ccb *ccb,
 239                                  int (*error_routine)(union ccb *ccb,
 240                                                       u_int32_t cam_flags,
 241                                                       u_int32_t sense_flags),
 242                                  u_int32_t cam_flags, u_int32_t sense_flags);
 243 static union    ccb     *cdgetccb(struct cam_periph *periph,
 244                                   u_int32_t priority);
 245 static  void            cddone(struct cam_periph *periph,
 246                                union ccb *start_ccb);
 247 static  int             cderror(union ccb *ccb, u_int32_t cam_flags,
 248                                 u_int32_t sense_flags);
 249 static  union cd_pages  *cdgetpage(struct cd_mode_params *mode_params);
 250 static  int             cdgetpagesize(int page_num);
 251 static  void            cdprevent(struct cam_periph *periph, int action);
 252 static  int             cdcheckmedia(struct cam_periph *periph);
 253 static  int             cdsize(struct cam_periph *periph, u_int32_t *size);
 254 static  int             cd6byteworkaround(union ccb *ccb);
 255 static  int             cdreadtoc(struct cam_periph *periph, u_int32_t mode,
 256                                   u_int32_t start, u_int8_t *data,
 257                                   u_int32_t len, u_int32_t sense_flags);
 258 static  int             cdgetmode(struct cam_periph *periph,
 259                                   struct cd_mode_params *data, u_int32_t page);
 260 static  int             cdsetmode(struct cam_periph *periph,
 261                                   struct cd_mode_params *data);
 262 static  int             cdplay(struct cam_periph *periph, u_int32_t blk,
 263                                u_int32_t len);
 264 static  int             cdreadsubchannel(struct cam_periph *periph,
 265                                          u_int32_t mode, u_int32_t format,
 266                                          int track,
 267                                          struct cd_sub_channel_info *data,
 268                                          u_int32_t len);
 269 static  int             cdplaymsf(struct cam_periph *periph, u_int32_t startm,
 270                                   u_int32_t starts, u_int32_t startf,
 271                                   u_int32_t endm, u_int32_t ends,
 272                                   u_int32_t endf);
 273 static  int             cdplaytracks(struct cam_periph *periph,
 274                                      u_int32_t strack, u_int32_t sindex,
 275                                      u_int32_t etrack, u_int32_t eindex);
 276 static  int             cdpause(struct cam_periph *periph, u_int32_t go);
 277 static  int             cdstopunit(struct cam_periph *periph, u_int32_t eject);
 278 static  int             cdstartunit(struct cam_periph *periph, int load);
 279 static  int             cdsetspeed(struct cam_periph *periph,
 280                                    u_int32_t rdspeed, u_int32_t wrspeed);
 281 static  int             cdreportkey(struct cam_periph *periph,
 282                                     struct dvd_authinfo *authinfo);
 283 static  int             cdsendkey(struct cam_periph *periph,
 284                                   struct dvd_authinfo *authinfo);
 285 static  int             cdreaddvdstructure(struct cam_periph *periph,
 286                                            struct dvd_struct *dvdstruct);
 287
 288 static struct periph_driver cddriver =
 289 {
 290         cdinit, "cd",
 291         TAILQ_HEAD_INITIALIZER(cddriver.units), /* generation */ 0
 292 };
 293
 294 DATA_SET(periphdriver_set, cddriver);
 295
 296 /* For 2.2-stable support */
 297 #ifndef D_DISK
 298 #define D_DISK 0
 299 #endif
 300 static struct cdevsw cd_cdevsw = {
 301         /* name */      "cd",
 302         /* maj */       SCSICD_CDEV_MAJOR,
 303         /* flags */     D_DISK,
 304         /* port */      NULL,
 305         /* autoq */     0,
 306
 307         /* open */      cdopen,
 308         /* close */     cdclose,
 309         /* read */      physread,
 310         /* write */     physwrite,
 311         /* ioctl */     cdioctl,
 312         /* poll */      nopoll,
 313         /* mmap */      nommap,
 314         /* strategy */  cdstrategy,
 315         /* dump */      nodump,
 316         /* psize */     nopsize,
 317 };
 318
 319 static struct extend_array *cdperiphs;
 320 static int num_changers;
 321
 322 #ifndef CHANGER_MIN_BUSY_SECONDS
 323 #define CHANGER_MIN_BUSY_SECONDS        5
 324 #endif
 325 #ifndef CHANGER_MAX_BUSY_SECONDS
 326 #define CHANGER_MAX_BUSY_SECONDS        15
 327 #endif
 328
 329 static int changer_min_busy_seconds = CHANGER_MIN_BUSY_SECONDS;
 330 static int changer_max_busy_seconds = CHANGER_MAX_BUSY_SECONDS;
 331
 332 /*
 333  * XXX KDM this CAM node should be moved if we ever get more CAM sysctl
 334  * variables.
 335  */
 336 SYSCTL_NODE(_kern, OID_AUTO, cam, CTLFLAG_RD, 0, "CAM Subsystem");
 337 SYSCTL_NODE(_kern_cam, OID_AUTO, cd, CTLFLAG_RD, 0, "CAM CDROM driver");
 338 SYSCTL_NODE(_kern_cam_cd, OID_AUTO, changer, CTLFLAG_RD, 0, "CD Changer");
 339 SYSCTL_INT(_kern_cam_cd_changer, OID_AUTO, min_busy_seconds, CTLFLAG_RW,
 340            &changer_min_busy_seconds, 0, "Minimum changer scheduling quantum");
 341 TUNABLE_INT("kern.cam.cd.changer.min_busy_seconds", &changer_min_busy_seconds);
 342 SYSCTL_INT(_kern_cam_cd_changer, OID_AUTO, max_busy_seconds, CTLFLAG_RW,
 343            &changer_max_busy_seconds, 0, "Maximum changer scheduling quantum");
 344 TUNABLE_INT("kern.cam.cd.changer.max_busy_seconds", &changer_max_busy_seconds);
 345
 346 struct cdchanger {
 347         path_id_t                        path_id;
 348         target_id_t                      target_id;
 349         int                              num_devices;
 350         struct camq                      devq;
 351         struct timeval                   start_time;
 352         struct cd_softc                  *cur_device;
 353         struct callout_handle            short_handle;
 354         struct callout_handle            long_handle;
 355         volatile cd_changer_flags        flags;
 356         STAILQ_ENTRY(cdchanger)          changer_links;
 357         STAILQ_HEAD(chdevlist, cd_softc) chluns;
 358 };
 359
 360 static STAILQ_HEAD(changerlist, cdchanger) changerq;
 361
 362 void
 363 cdinit(void)
 364 {
 365         cam_status status;
 366         struct cam_path *path;
 367
 368         /*
 369          * Create our extend array for storing the devices we attach to.
 370          */
 371         cdperiphs = cam_extend_new();
 372         if (cdperiphs == NULL) {
 373                 printf("cd: Failed to alloc extend array!\n");
 374                 return;
 375         }
 376
 377         /*
 378          * Install a global async callback.  This callback will
 379          * receive async callbacks like "new device found".
 380          */
 381         status = xpt_create_path(&path, /*periph*/NULL, CAM_XPT_PATH_ID,
 382                                  CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD);
 383
 384         if (status == CAM_REQ_CMP) {
 385                 struct ccb_setasync csa;
 386
 387                 xpt_setup_ccb(&csa.ccb_h, path, /*priority*/5);
 388                 csa.ccb_h.func_code = XPT_SASYNC_CB;
 389                 csa.event_enable = AC_FOUND_DEVICE;
 390                 csa.callback = cdasync;
 391                 csa.callback_arg = NULL;
 392                 xpt_action((union ccb *)&csa);
 393                 status = csa.ccb_h.status;
 394                 xpt_free_path(path);
 395         }
 396
 397         if (status != CAM_REQ_CMP) {
 398                 printf("cd: Failed to attach master async callback "
 399                        "due to status 0x%x!\n", status);
 400         }
 401 }
 402
 403 static void
 404 cdoninvalidate(struct cam_periph *periph)
 405 {
 406         int s;
 407         struct cd_softc *softc;
 408         struct buf *q_bp;
 409         struct ccb_setasync csa;
 410
 411         softc = (struct cd_softc *)periph->softc;
 412
 413         /*
 414          * De-register any async callbacks.
 415          */
 416         xpt_setup_ccb(&csa.ccb_h, periph->path,
 417                       /* priority */ 5);
 418         csa.ccb_h.func_code = XPT_SASYNC_CB;
 419         csa.event_enable = 0;
 420         csa.callback = cdasync;
 421         csa.callback_arg = periph;
 422         xpt_action((union ccb *)&csa);
 423
 424         softc->flags |= CD_FLAG_INVALID;
 425
 426         /*
 427          * Although the oninvalidate() routines are always called at
 428          * splsoftcam, we need to be at splbio() here to keep the buffer
 429          * queue from being modified while we traverse it.
 430          */
 431         s = splbio();
 432
 433         /*
 434          * Return all queued I/O with ENXIO.
 435          * XXX Handle any transactions queued to the card
 436          *     with XPT_ABORT_CCB.
 437          */
 438         while ((q_bp = bufq_first(&softc->buf_queue)) != NULL){
 439                 bufq_remove(&softc->buf_queue, q_bp);
 440                 q_bp->b_resid = q_bp->b_bcount;
 441                 q_bp->b_error = ENXIO;
 442                 q_bp->b_flags |= B_ERROR;
 443                 biodone(q_bp);
 444         }
 445         splx(s);
 446
 447         /*
 448          * If this device is part of a changer, and it was scheduled
 449          * to run, remove it from the run queue since we just nuked
 450          * all of its scheduled I/O.
 451          */
 452         if ((softc->flags & CD_FLAG_CHANGER)
 453          && (softc->pinfo.index != CAM_UNQUEUED_INDEX))
 454                 camq_remove(&softc->changer->devq, softc->pinfo.index);
 455
 456         xpt_print_path(periph->path);
 457         printf("lost device\n");
 458 }
 459
 460 static void
 461 cdcleanup(struct cam_periph *periph)
 462 {
 463         struct cd_softc *softc;
 464         int s;
 465
 466         softc = (struct cd_softc *)periph->softc;
 467
 468         xpt_print_path(periph->path);
 469         printf("removing device entry\n");
 470
 471         if ((softc->flags & CD_FLAG_SCTX_INIT) != 0
 472             && sysctl_ctx_free(&softc->sysctl_ctx) != 0) {
 473                 xpt_print_path(periph->path);
 474                 printf("can't remove sysctl context\n");
 475         }
 476
 477         s = splsoftcam();
 478         /*
 479          * In the queued, non-active case, the device in question
 480          * has already been removed from the changer run queue.  Since this
 481          * device is active, we need to de-activate it, and schedule
 482          * another device to run.  (if there is another one to run)
 483          */
 484         if ((softc->flags & CD_FLAG_CHANGER)
 485          && (softc->flags & CD_FLAG_ACTIVE)) {
 486
 487                 /*
 488                  * The purpose of the short timeout is soley to determine
 489                  * whether the current device has finished or not.  Well,
 490                  * since we're removing the active device, we know that it
 491                  * is finished.  So, get rid of the short timeout.
 492                  * Otherwise, if we're in the time period before the short
 493                  * timeout fires, and there are no other devices in the
 494                  * queue to run, there won't be any other device put in the
 495                  * active slot.  i.e., when we call cdrunchangerqueue()
 496                  * below, it won't do anything.  Then, when the short
 497                  * timeout fires, it'll look at the "current device", which
 498                  * we are free below, and possibly panic the kernel on a
 499                  * bogus pointer reference.
 500                  *
 501                  * The long timeout doesn't really matter, since we
 502                  * decrement the qfrozen_cnt to indicate that there is
 503                  * nothing in the active slot now.  Therefore, there won't
 504                  * be any bogus pointer references there.
 505                  */
 506                 if (softc->changer->flags & CHANGER_SHORT_TMOUT_SCHED) {
 507                         untimeout(cdshorttimeout, softc->changer,
 508                                   softc->changer->short_handle);
 509                         softc->changer->flags &= ~CHANGER_SHORT_TMOUT_SCHED;
 510                 }
 511                 softc->changer->devq.qfrozen_cnt--;
 512                 softc->changer->flags |= CHANGER_MANUAL_CALL;
 513                 cdrunchangerqueue(softc->changer);
 514         }
 515
 516         /*
 517          * If we're removing the last device on the changer, go ahead and
 518          * remove the changer device structure.
 519          */
 520         if ((softc->flags & CD_FLAG_CHANGER)
 521          && (--softc->changer->num_devices == 0)) {
 522
 523                 /*
 524                  * Theoretically, there shouldn't be any timeouts left, but
 525                  * I'm not completely sure that that will be the case.  So,
 526                  * it won't hurt to check and see if there are any left.
 527                  */
 528                 if (softc->changer->flags & CHANGER_TIMEOUT_SCHED) {
 529                         untimeout(cdrunchangerqueue, softc->changer,
 530                                   softc->changer->long_handle);
 531                         softc->changer->flags &= ~CHANGER_TIMEOUT_SCHED;
 532                 }
 533
 534                 if (softc->changer->flags & CHANGER_SHORT_TMOUT_SCHED) {
 535                         untimeout(cdshorttimeout, softc->changer,
 536                                   softc->changer->short_handle);
 537                         softc->changer->flags &= ~CHANGER_SHORT_TMOUT_SCHED;
 538                 }
 539
 540                 STAILQ_REMOVE(&changerq, softc->changer, cdchanger,
 541                               changer_links);
 542                 xpt_print_path(periph->path);
 543                 printf("removing changer entry\n");
 544                 free(softc->changer, M_DEVBUF);
 545                 num_changers--;
 546         }
 547         devstat_remove_entry(&softc->device_stats);
 548         cam_extend_release(cdperiphs, periph->unit_number);
 549         if (softc->disk.d_dev) {
 550                 disk_destroy(&softc->disk);
 551         }
 552         free(softc, M_DEVBUF);
 553         splx(s);
 554 }
 555
 556 static void
 557 cdasync(void *callback_arg, u_int32_t code,
 558         struct cam_path *path, void *arg)
 559 {
 560         struct cam_periph *periph;
 561
 562         periph = (struct cam_periph *)callback_arg;
 563         switch (code) {
 564         case AC_FOUND_DEVICE:
 565         {
 566                 struct ccb_getdev *cgd;
 567                 cam_status status;
 568
 569                 cgd = (struct ccb_getdev *)arg;
 570
 571                 if (SID_TYPE(&cgd->inq_data) != T_CDROM
 572                     && SID_TYPE(&cgd->inq_data) != T_WORM)
 573                         break;
 574
 575                 /*
 576                  * Allocate a peripheral instance for
 577                  * this device and start the probe
 578                  * process.
 579                  */
 580                 status = cam_periph_alloc(cdregister, cdoninvalidate,
 581                                           cdcleanup, cdstart,
 582                                           "cd", CAM_PERIPH_BIO,
 583                                           cgd->ccb_h.path, cdasync,
 584                                           AC_FOUND_DEVICE, cgd);
 585
 586                 if (status != CAM_REQ_CMP
 587                  && status != CAM_REQ_INPROG)
 588                         printf("cdasync: Unable to attach new device "
 589                                "due to status 0x%x\n", status);
 590
 591                 break;
 592         }
 593         case AC_SENT_BDR:
 594         case AC_BUS_RESET:
 595         {
 596                 struct cd_softc *softc;
 597                 struct ccb_hdr *ccbh;
 598                 int s;
 599
 600                 softc = (struct cd_softc *)periph->softc;
 601                 s = splsoftcam();
 602                 /*
 603                  * Don't fail on the expected unit attention
 604                  * that will occur.
 605                  */
 606                 softc->flags |= CD_FLAG_RETRY_UA;
 607                 for (ccbh = LIST_FIRST(&softc->pending_ccbs);
 608                      ccbh != NULL; ccbh = LIST_NEXT(ccbh, periph_links.le))
 609                         ccbh->ccb_state |= CD_CCB_RETRY_UA;
 610                 splx(s);
 611                 /* FALLTHROUGH */
 612         }
 613         default:
 614                 cam_periph_async(periph, code, path, arg);
 615                 break;
 616         }
 617 }
 618
 619 static void
 620 cdsysctlinit(void *context, int pending)
 621 {
 622         struct cam_periph *periph;
 623         struct cd_softc *softc;
 624         char tmpstr[80], tmpstr2[80];
 625
 626         periph = (struct cam_periph *)context;
 627         softc = (struct cd_softc *)periph->softc;
 628
 629         snprintf(tmpstr, sizeof(tmpstr), "CAM CD unit %d", periph->unit_number);
 630         snprintf(tmpstr2, sizeof(tmpstr2), "%d", periph->unit_number);
 631
 632         sysctl_ctx_init(&softc->sysctl_ctx);
 633         softc->flags |= CD_FLAG_SCTX_INIT;
 634         softc->sysctl_tree = SYSCTL_ADD_NODE(&softc->sysctl_ctx,
 635         SYSCTL_STATIC_CHILDREN(_kern_cam_cd), OID_AUTO,
 636         tmpstr2, CTLFLAG_RD, 0, tmpstr);
 637
 638         if (softc->sysctl_tree == NULL) {
 639                 printf("cdsysctlinit: unable to allocate sysctl tree\n");
 640                 return;
 641         }
 642
 643         /*
 644          * Now register the sysctl handler, so the user can the value on
 645          * the fly.
 646          */
 647         SYSCTL_ADD_PROC(&softc->sysctl_ctx,SYSCTL_CHILDREN(softc->sysctl_tree),
 648                         OID_AUTO, "minimum_cmd_size", CTLTYPE_INT | CTLFLAG_RW,
 649                         &softc->minimum_command_size, 0, cdcmdsizesysctl, "I",
 650                         "Minimum CDB size");
 651 }
 652
 653 /*
 654  * We have a handler function for this so we can check the values when the
 655  * user sets them, instead of every time we look at them.
 656  */
 657 static int
 658 cdcmdsizesysctl(SYSCTL_HANDLER_ARGS)
 659 {
 660         int error, value;
 661
 662         value = *(int *)arg1;
 663
 664         error = sysctl_handle_int(oidp, &value, 0, req);
 665
 666         if ((error != 0) || (req->newptr == NULL))
 667                 return (error);
 668
 669         /*
 670          * The only real values we can have here are 6 or 10.  I don't
 671          * really forsee having 12 be an option at any time in the future.
 672          * So if the user sets something less than or equal to 6, we'll set
 673          * it to 6.  If he sets something greater than 6, we'll set it to 10.
 674          *
 675          * I suppose we could just return an error here for the wrong values,
 676          * but I don't think it's necessary to do so, as long as we can
 677          * determine the user's intent without too much trouble.
 678          */
 679         if (value < 6)
 680                 value = 6;
 681         else if (value > 6)
 682                 value = 10;
 683
 684         *(int *)arg1 = value;
 685
 686         return (0);
 687 }
 688
 689
 690 static cam_status
 691 cdregister(struct cam_periph *periph, void *arg)
 692 {
 693         struct cd_softc *softc;
 694         struct ccb_setasync csa;
 695         struct ccb_pathinq cpi;
 696         struct ccb_getdev *cgd;
 697         char tmpstr[80];
 698         caddr_t match;
 699
 700         cgd = (struct ccb_getdev *)arg;
 701         if (periph == NULL) {
 702                 printf("cdregister: periph was NULL!!\n");
 703                 return(CAM_REQ_CMP_ERR);
 704         }
 705         if (cgd == NULL) {
 706                 printf("cdregister: no getdev CCB, can't register device\n");
 707                 return(CAM_REQ_CMP_ERR);
 708         }
 709
 710         softc = (struct cd_softc *)malloc(sizeof(*softc),M_DEVBUF,M_NOWAIT);
 711
 712         if (softc == NULL) {
 713                 printf("cdregister: Unable to probe new device. "
 714                        "Unable to allocate softc\n");
 715                 return(CAM_REQ_CMP_ERR);
 716         }
 717
 718         bzero(softc, sizeof(*softc));
 719         LIST_INIT(&softc->pending_ccbs);
 720         STAILQ_INIT(&softc->mode_queue);
 721         softc->state = CD_STATE_PROBE;
 722         bufq_init(&softc->buf_queue);
 723         if (SID_IS_REMOVABLE(&cgd->inq_data))
 724                 softc->flags |= CD_FLAG_DISC_REMOVABLE;
 725         if ((cgd->inq_data.flags & SID_CmdQue) != 0)
 726                 softc->flags |= CD_FLAG_TAGGED_QUEUING;
 727
 728         periph->softc = softc;
 729         softc->periph = periph;
 730
 731         cam_extend_set(cdperiphs, periph->unit_number, periph);
 732
 733         /*
 734          * See if this device has any quirks.
 735          */
 736         match = cam_quirkmatch((caddr_t)&cgd->inq_data,
 737                                (caddr_t)cd_quirk_table,
 738                                sizeof(cd_quirk_table)/sizeof(*cd_quirk_table),
 739                                sizeof(*cd_quirk_table), scsi_inquiry_match);
 740
 741         if (match != NULL)
 742                 softc->quirks = ((struct cd_quirk_entry *)match)->quirks;
 743         else
 744                 softc->quirks = CD_Q_NONE;
 745
 746         /* Check if the SIM does not want 6 byte commands */
 747         xpt_setup_ccb(&cpi.ccb_h, periph->path, /*priority*/1);
 748         cpi.ccb_h.func_code = XPT_PATH_INQ;
 749         xpt_action((union ccb *)&cpi);
 750         if (cpi.ccb_h.status == CAM_REQ_CMP && (cpi.hba_misc & PIM_NO_6_BYTE))
 751                 softc->quirks |= CD_Q_10_BYTE_ONLY;
 752
 753         TASK_INIT(&softc->sysctl_task, 0, cdsysctlinit, periph);
 754
 755         /* The default is 6 byte commands, unless quirked otherwise */
 756         if (softc->quirks & CD_Q_10_BYTE_ONLY)
 757                 softc->minimum_command_size = 10;
 758         else
 759                 softc->minimum_command_size = 6;
 760
 761         /*
 762          * Load the user's default, if any.
 763          */
 764         snprintf(tmpstr, sizeof(tmpstr), "kern.cam.cd.%d.minimum_cmd_size",
 765                 periph->unit_number);
 766         TUNABLE_INT_FETCH(tmpstr, &softc->minimum_command_size);
 767
 768         /* 6 and 10 are the only permissible values here. */
 769         if (softc->minimum_command_size < 6)
 770                 softc->minimum_command_size = 6;
 771         else if (softc->minimum_command_size > 6)
 772                 softc->minimum_command_size = 10;
 773
 774         /*
 775          * We need to register the statistics structure for this device,
 776          * but we don't have the blocksize yet for it.  So, we register
 777          * the structure and indicate that we don't have the blocksize
 778          * yet.  Unlike other SCSI peripheral drivers, we explicitly set
 779          * the device type here to be CDROM, rather than just ORing in
 780          * the device type.  This is because this driver can attach to either
 781          * CDROM or WORM devices, and we want this peripheral driver to
 782          * show up in the devstat list as a CD peripheral driver, not a
 783          * WORM peripheral driver.  WORM drives will also have the WORM
 784          * driver attached to them.
 785          */
 786         devstat_add_entry(&softc->device_stats, "cd",
 787                           periph->unit_number, 0,
 788                           DEVSTAT_BS_UNAVAILABLE,
 789                           DEVSTAT_TYPE_CDROM | DEVSTAT_TYPE_IF_SCSI,
 790                           DEVSTAT_PRIORITY_CD);
 791         disk_create(periph->unit_number, &softc->disk,
 792                     DSO_ONESLICE | DSO_COMPATLABEL, &cd_cdevsw);
 793
 794         /*
 795          * Add an async callback so that we get
 796          * notified if this device goes away.
 797          */
 798         xpt_setup_ccb(&csa.ccb_h, periph->path,
 799                       /* priority */ 5);
 800         csa.ccb_h.func_code = XPT_SASYNC_CB;
 801         csa.event_enable = AC_SENT_BDR | AC_BUS_RESET | AC_LOST_DEVICE;
 802         csa.callback = cdasync;
 803         csa.callback_arg = periph;
 804         xpt_action((union ccb *)&csa);
 805
 806         /*
 807          * If the target lun is greater than 0, we most likely have a CD
 808          * changer device.  Check the quirk entries as well, though, just
 809          * in case someone has a CD tower with one lun per drive or
 810          * something like that.  Also, if we know up front that a
 811          * particular device is a changer, we can mark it as such starting
 812          * with lun 0, instead of lun 1.  It shouldn't be necessary to have
 813          * a quirk entry to define something as a changer, however.
 814          */
 815         if (((cgd->ccb_h.target_lun > 0)
 816           && ((softc->quirks & CD_Q_NO_CHANGER) == 0))
 817          || ((softc->quirks & CD_Q_CHANGER) != 0)) {
 818                 struct cdchanger *nchanger;
 819                 struct cam_periph *nperiph;
 820                 struct cam_path *path;
 821                 cam_status status;
 822                 int found;
 823
 824                 /* Set the changer flag in the current device's softc */
 825                 softc->flags |= CD_FLAG_CHANGER;
 826
 827                 if (num_changers == 0)
 828                         STAILQ_INIT(&changerq);
 829
 830                 /*
 831                  * Now, look around for an existing changer device with the
 832                  * same path and target ID as the current device.
 833                  */
 834                 for (found = 0,
 835                      nchanger = (struct cdchanger *)STAILQ_FIRST(&changerq);
 836                      nchanger != NULL;
 837                      nchanger = STAILQ_NEXT(nchanger, changer_links)){
 838                         if ((nchanger->path_id == cgd->ccb_h.path_id)
 839                          && (nchanger->target_id == cgd->ccb_h.target_id)) {
 840                                 found = 1;
 841                                 break;
 842                         }
 843                 }
 844
 845                 /*
 846                  * If we found a matching entry, just add this device to
 847                  * the list of devices on this changer.
 848                  */
 849                 if (found == 1) {
 850                         struct chdevlist *chlunhead;
 851
 852                         chlunhead = &nchanger->chluns;
 853
 854                         /*
 855                          * XXX KDM look at consolidating this code with the
 856                          * code below in a separate function.
 857                          */
 858
 859                         /*
 860                          * Create a path with lun id 0, and see if we can
 861                          * find a matching device
 862                          */
 863                         status = xpt_create_path(&path, /*periph*/ periph,
 864                                                  cgd->ccb_h.path_id,
 865                                                  cgd->ccb_h.target_id, 0);
 866
 867                         if ((status == CAM_REQ_CMP)
 868                          && ((nperiph = cam_periph_find(path, "cd")) != NULL)){
 869                                 struct cd_softc *nsoftc;
 870
 871                                 nsoftc = (struct cd_softc *)nperiph->softc;
 872
 873                                 if ((nsoftc->flags & CD_FLAG_CHANGER) == 0){
 874                                         nsoftc->flags |= CD_FLAG_CHANGER;
 875                                         nchanger->num_devices++;
 876                                         if (camq_resize(&nchanger->devq,
 877                                            nchanger->num_devices)!=CAM_REQ_CMP){
 878                                                 printf("cdregister: "
 879                                                        "camq_resize "
 880                                                        "failed, changer "
 881                                                        "support may "
 882                                                        "be messed up\n");
 883                                         }
 884                                         nsoftc->changer = nchanger;
 885                                         nsoftc->pinfo.index =CAM_UNQUEUED_INDEX;
 886
 887                                         STAILQ_INSERT_TAIL(&nchanger->chluns,
 888                                                           nsoftc,changer_links);
 889                                 }
 890                                 xpt_free_path(path);
 891                         } else if (status == CAM_REQ_CMP)
 892                                 xpt_free_path(path);
 893                         else {
 894                                 printf("cdregister: unable to allocate path\n"
 895                                        "cdregister: changer support may be "
 896                                        "broken\n");
 897                         }
 898
 899                         nchanger->num_devices++;
 900
 901                         softc->changer = nchanger;
 902                         softc->pinfo.index = CAM_UNQUEUED_INDEX;
 903
 904                         if (camq_resize(&nchanger->devq,
 905                             nchanger->num_devices) != CAM_REQ_CMP) {
 906                                 printf("cdregister: camq_resize "
 907                                        "failed, changer support may "
 908                                        "be messed up\n");
 909                         }
 910
 911                         STAILQ_INSERT_TAIL(chlunhead, softc, changer_links);
 912                 }
 913                 /*
 914                  * In this case, we don't already have an entry for this
 915                  * particular changer, so we need to create one, add it to
 916                  * the queue, and queue this device on the list for this
 917                  * changer.  Before we queue this device, however, we need
 918                  * to search for lun id 0 on this target, and add it to the
 919                  * queue first, if it exists.  (and if it hasn't already
 920                  * been marked as part of the changer.)
 921                  */
 922                 else {
 923                         nchanger = malloc(sizeof(struct cdchanger),
 924                                 M_DEVBUF, M_NOWAIT);
 925
 926                         if (nchanger == NULL) {
 927                                 softc->flags &= ~CD_FLAG_CHANGER;
 928                                 printf("cdregister: unable to malloc "
 929                                        "changer structure\ncdregister: "
 930                                        "changer support disabled\n");
 931
 932                                 /*
 933                                  * Yes, gotos can be gross but in this case
 934                                  * I think it's justified..
 935                                  */
 936                                 goto cdregisterexit;
 937                         }
 938
 939                         /* zero the structure */
 940                         bzero(nchanger, sizeof(struct cdchanger));
 941
 942                         if (camq_init(&nchanger->devq, 1) != 0) {
 943                                 softc->flags &= ~CD_FLAG_CHANGER;
 944                                 printf("cdregister: changer support "
 945                                        "disabled\n");
 946                                 goto cdregisterexit;
 947                         }
 948
 949                         num_changers++;
 950
 951                         nchanger->path_id = cgd->ccb_h.path_id;
 952                         nchanger->target_id = cgd->ccb_h.target_id;
 953
 954                         /* this is superfluous, but it makes things clearer */
 955                         nchanger->num_devices = 0;
 956
 957                         STAILQ_INIT(&nchanger->chluns);
 958
 959                         STAILQ_INSERT_TAIL(&changerq, nchanger,
 960                                            changer_links);
 961
 962                         /*
 963                          * Create a path with lun id 0, and see if we can
 964                          * find a matching device
 965                          */
 966                         status = xpt_create_path(&path, /*periph*/ periph,
 967                                                  cgd->ccb_h.path_id,
 968                                                  cgd->ccb_h.target_id, 0);
 969
 970                         /*
 971                          * If we were able to allocate the path, and if we
 972                          * find a matching device and it isn't already
 973                          * marked as part of a changer, then we add it to
 974                          * the current changer.
 975                          */
 976                         if ((status == CAM_REQ_CMP)
 977                          && ((nperiph = cam_periph_find(path, "cd")) != NULL)
 978                          && ((((struct cd_softc *)periph->softc)->flags &
 979                                CD_FLAG_CHANGER) == 0)) {
 980                                 struct cd_softc *nsoftc;
 981
 982                                 nsoftc = (struct cd_softc *)nperiph->softc;
 983
 984                                 nsoftc->flags |= CD_FLAG_CHANGER;
 985                                 nchanger->num_devices++;
 986                                 if (camq_resize(&nchanger->devq,
 987                                     nchanger->num_devices) != CAM_REQ_CMP) {
 988                                         printf("cdregister: camq_resize "
 989                                                "failed, changer support may "
 990                                                "be messed up\n");
 991                                 }
 992                                 nsoftc->changer = nchanger;
 993                                 nsoftc->pinfo.index = CAM_UNQUEUED_INDEX;
 994
 995                                 STAILQ_INSERT_TAIL(&nchanger->chluns,
 996                                                    nsoftc, changer_links);
 997                                 xpt_free_path(path);
 998                         } else if (status == CAM_REQ_CMP)
 999                                 xpt_free_path(path);
1000                         else {
1001                                 printf("cdregister: unable to allocate path\n"
1002                                        "cdregister: changer support may be "
1003                                        "broken\n");
1004                         }
1005
1006                         softc->changer = nchanger;
1007                         softc->pinfo.index = CAM_UNQUEUED_INDEX;
1008                         nchanger->num_devices++;
1009                         if (camq_resize(&nchanger->devq,
1010                             nchanger->num_devices) != CAM_REQ_CMP) {
1011                                 printf("cdregister: camq_resize "
1012                                        "failed, changer support may "
1013                                        "be messed up\n");
1014                         }
1015                         STAILQ_INSERT_TAIL(&nchanger->chluns, softc,
1016                                            changer_links);
1017                 }
1018         }
1019
1020 cdregisterexit:
1021
1022         /* Lock this peripheral until we are setup */
1023         /* Can't block */
1024         cam_periph_lock(periph, 0);
1025
1026         if ((softc->flags & CD_FLAG_CHANGER) == 0)
1027                 xpt_schedule(periph, /*priority*/5);
1028         else
1029                 cdschedule(periph, /*priority*/ 5);
1030
1031         return(CAM_REQ_CMP);
1032 }
1033
1034 static int
1035 cdopen(dev_t dev, int flags, int fmt, struct thread *td)
1036 {
1037         struct cam_periph *periph;
1038         struct cd_softc *softc;
1039         int unit, error;
1040         int s;
1041
1042         unit = dkunit(dev);
1043         periph = cam_extend_get(cdperiphs, unit);
1044
1045         if (periph == NULL)
1046                 return (ENXIO);
1047
1048         softc = (struct cd_softc *)periph->softc;
1049
1050         /*
1051          * Grab splsoftcam and hold it until we lock the peripheral.
1052          */
1053         s = splsoftcam();
1054         if (softc->flags & CD_FLAG_INVALID) {
1055                 splx(s);
1056                 return(ENXIO);
1057         }
1058
1059         if ((error = cam_periph_lock(periph, PCATCH)) != 0) {
1060                 splx(s);
1061                 return (error);
1062         }
1063
1064         splx(s);
1065
1066         if (cam_periph_acquire(periph) != CAM_REQ_CMP)
1067                 return(ENXIO);
1068
1069         /*
1070          * Check for media, and set the appropriate flags.  We don't bail
1071          * if we don't have media, but then we don't allow anything but the
1072          * CDIOCEJECT/CDIOCCLOSE ioctls if there is no media.
1073          *
1074          * XXX KDM for now, we do fail the open if we don't have media.  We
1075          * can change this once we've figured out how to make the slice
1076          * code work well with media changing underneath it.
1077          */
1078         error = cdcheckmedia(periph);
1079
1080         if (error == 0)
1081                 softc->flags |= CD_FLAG_OPEN;
1082
1083         cam_periph_unlock(periph);
1084
1085         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("leaving cdopen\n"));
1086
1087         return (error);
1088 }
1089
1090 static int
1091 cdclose(dev_t dev, int flag, int fmt, struct thread *td)
1092 {
1093         struct  cam_periph *periph;
1094         struct  cd_softc *softc;
1095         int     unit, error;
1096
1097         unit = dkunit(dev);
1098         periph = cam_extend_get(cdperiphs, unit);
1099         if (periph == NULL)
1100                 return (ENXIO);
1101
1102         softc = (struct cd_softc *)periph->softc;
1103
1104         if ((error = cam_periph_lock(periph, 0)) != 0)
1105                 return (error);
1106
1107         if ((softc->flags & CD_FLAG_DISC_REMOVABLE) != 0)
1108                 cdprevent(periph, PR_ALLOW);
1109
1110         /*
1111          * Unconditionally set the dsopen() flags back to their default
1112          * state.
1113          */
1114         softc->disk.d_dsflags &= ~DSO_NOLABELS;
1115         softc->disk.d_dsflags |= DSO_COMPATLABEL;
1116
1117         /*
1118          * Since we're closing this CD, mark the blocksize as unavailable.
1119          * It will be marked as available when the CD is opened again.
1120          */
1121         softc->device_stats.flags |= DEVSTAT_BS_UNAVAILABLE;
1122
1123         /*
1124          * We'll check the media and toc again at the next open().
1125          */
1126         softc->flags &= ~(CD_FLAG_VALID_MEDIA|CD_FLAG_VALID_TOC);
1127
1128         softc->flags &= ~CD_FLAG_OPEN;
1129
1130         cam_periph_unlock(periph);
1131         cam_periph_release(periph);
1132
1133         return (0);
1134 }
1135
1136 static void
1137 cdshorttimeout(void *arg)
1138 {
1139         struct cdchanger *changer;
1140         int s;
1141
1142         s = splsoftcam();
1143
1144         changer = (struct cdchanger *)arg;
1145
1146         /* Always clear the short timeout flag, since that's what we're in */
1147         changer->flags &= ~CHANGER_SHORT_TMOUT_SCHED;
1148
1149         /*
1150          * Check to see if there is any more pending or outstanding I/O for
1151          * this device.  If not, move it out of the active slot.
1152          */
1153         if ((bufq_first(&changer->cur_device->buf_queue) == NULL)
1154          && (changer->cur_device->device_stats.busy_count == 0)) {
1155                 changer->flags |= CHANGER_MANUAL_CALL;
1156                 cdrunchangerqueue(changer);
1157         }
1158
1159         splx(s);
1160 }
1161
1162 /*
1163  * This is a wrapper for xpt_schedule.  It only applies to changers.
1164  */
1165 static void
1166 cdschedule(struct cam_periph *periph, int priority)
1167 {
1168         struct cd_softc *softc;
1169         int s;
1170
1171         s = splsoftcam();
1172
1173         softc = (struct cd_softc *)periph->softc;
1174
1175         /*
1176          * If this device isn't currently queued, and if it isn't
1177          * the active device, then we queue this device and run the
1178          * changer queue if there is no timeout scheduled to do it.
1179          * If this device is the active device, just schedule it
1180          * to run again.  If this device is queued, there should be
1181          * a timeout in place already that will make sure it runs.
1182          */
1183         if ((softc->pinfo.index == CAM_UNQUEUED_INDEX)
1184          && ((softc->flags & CD_FLAG_ACTIVE) == 0)) {
1185                 /*
1186                  * We don't do anything with the priority here.
1187                  * This is strictly a fifo queue.
1188                  */
1189                 softc->pinfo.priority = 1;
1190                 softc->pinfo.generation = ++softc->changer->devq.generation;
1191                 camq_insert(&softc->changer->devq, (cam_pinfo *)softc);
1192
1193                 /*
1194                  * Since we just put a device in the changer queue,
1195                  * check and see if there is a timeout scheduled for
1196                  * this changer.  If so, let the timeout handle
1197                  * switching this device into the active slot.  If
1198                  * not, manually call the timeout routine to
1199                  * bootstrap things.
1200                  */
1201                 if (((softc->changer->flags & CHANGER_TIMEOUT_SCHED)==0)
1202                  && ((softc->changer->flags & CHANGER_NEED_TIMEOUT)==0)
1203                  && ((softc->changer->flags & CHANGER_SHORT_TMOUT_SCHED)==0)){
1204                         softc->changer->flags |= CHANGER_MANUAL_CALL;
1205                         cdrunchangerqueue(softc->changer);
1206                 }
1207         } else if ((softc->flags & CD_FLAG_ACTIVE)
1208                 && ((softc->flags & CD_FLAG_SCHED_ON_COMP) == 0))
1209                 xpt_schedule(periph, priority);
1210
1211         splx(s);
1212
1213 }
1214
1215 static void
1216 cdrunchangerqueue(void *arg)
1217 {
1218         struct cd_softc *softc;
1219         struct cdchanger *changer;
1220         int called_from_timeout;
1221         int s;
1222
1223         s = splsoftcam();
1224
1225         changer = (struct cdchanger *)arg;
1226
1227         /*
1228          * If we have NOT been called from cdstrategy() or cddone(), and
1229          * instead from a timeout routine, go ahead and clear the
1230          * timeout flag.
1231          */
1232         if ((changer->flags & CHANGER_MANUAL_CALL) == 0) {
1233                 changer->flags &= ~CHANGER_TIMEOUT_SCHED;
1234                 called_from_timeout = 1;
1235         } else
1236                 called_from_timeout = 0;
1237
1238         /* Always clear the manual call flag */
1239         changer->flags &= ~CHANGER_MANUAL_CALL;
1240
1241         /* nothing to do if the queue is empty */
1242         if (changer->devq.entries <= 0) {
1243                 splx(s);
1244                 return;
1245         }
1246
1247         /*
1248          * If the changer queue is frozen, that means we have an active
1249          * device.
1250          */
1251         if (changer->devq.qfrozen_cnt > 0) {
1252
1253                 if (changer->cur_device->device_stats.busy_count > 0) {
1254                         changer->cur_device->flags |= CD_FLAG_SCHED_ON_COMP;
1255                         changer->cur_device->bufs_left =
1256                                 changer->cur_device->device_stats.busy_count;
1257                         if (called_from_timeout) {
1258                                 changer->long_handle =
1259                                         timeout(cdrunchangerqueue, changer,
1260                                         changer_max_busy_seconds * hz);
1261                                 changer->flags |= CHANGER_TIMEOUT_SCHED;
1262                         }
1263                         splx(s);
1264                         return;
1265                 }
1266
1267                 /*
1268                  * We always need to reset the frozen count and clear the
1269                  * active flag.
1270                  */
1271                 changer->devq.qfrozen_cnt--;
1272                 changer->cur_device->flags &= ~CD_FLAG_ACTIVE;
1273                 changer->cur_device->flags &= ~CD_FLAG_SCHED_ON_COMP;
1274
1275                 /*
1276                  * Check to see whether the current device has any I/O left
1277                  * to do.  If so, requeue it at the end of the queue.  If
1278                  * not, there is no need to requeue it.
1279                  */
1280                 if (bufq_first(&changer->cur_device->buf_queue) != NULL) {
1281
1282                         changer->cur_device->pinfo.generation =
1283                                 ++changer->devq.generation;
1284                         camq_insert(&changer->devq,
1285                                 (cam_pinfo *)changer->cur_device);
1286                 }
1287         }
1288
1289         softc = (struct cd_softc *)camq_remove(&changer->devq, CAMQ_HEAD);
1290
1291         changer->cur_device = softc;
1292
1293         changer->devq.qfrozen_cnt++;
1294         softc->flags |= CD_FLAG_ACTIVE;
1295
1296         /* Just in case this device is waiting */
1297         wakeup(&softc->changer);
1298         xpt_schedule(softc->periph, /*priority*/ 1);
1299
1300         /*
1301          * Get rid of any pending timeouts, and set a flag to schedule new
1302          * ones so this device gets its full time quantum.
1303          */
1304         if (changer->flags & CHANGER_TIMEOUT_SCHED) {
1305                 untimeout(cdrunchangerqueue, changer, changer->long_handle);
1306                 changer->flags &= ~CHANGER_TIMEOUT_SCHED;
1307         }
1308
1309         if (changer->flags & CHANGER_SHORT_TMOUT_SCHED) {
1310                 untimeout(cdshorttimeout, changer, changer->short_handle);
1311                 changer->flags &= ~CHANGER_SHORT_TMOUT_SCHED;
1312         }
1313
1314         /*
1315          * We need to schedule timeouts, but we only do this after the
1316          * first transaction has completed.  This eliminates the changer
1317          * switch time.
1318          */
1319         changer->flags |= CHANGER_NEED_TIMEOUT;
1320
1321         splx(s);
1322 }
1323
1324 static void
1325 cdchangerschedule(struct cd_softc *softc)
1326 {
1327         struct cdchanger *changer;
1328         int s;
1329
1330         s = splsoftcam();
1331
1332         changer = softc->changer;
1333
1334         /*
1335          * If this is a changer, and this is the current device,
1336          * and this device has at least the minimum time quantum to
1337          * run, see if we can switch it out.
1338          */
1339         if ((softc->flags & CD_FLAG_ACTIVE)
1340          && ((changer->flags & CHANGER_SHORT_TMOUT_SCHED) == 0)
1341          && ((changer->flags & CHANGER_NEED_TIMEOUT) == 0)) {
1342                 /*
1343                  * We try three things here.  The first is that we
1344                  * check to see whether the schedule on completion
1345                  * flag is set.  If it is, we decrement the number
1346                  * of buffers left, and if it's zero, we reschedule.
1347                  * Next, we check to see whether the pending buffer
1348                  * queue is empty and whether there are no
1349                  * outstanding transactions.  If so, we reschedule.
1350                  * Next, we see if the pending buffer queue is empty.
1351                  * If it is, we set the number of buffers left to
1352                  * the current active buffer count and set the
1353                  * schedule on complete flag.
1354                  */
1355                 if (softc->flags & CD_FLAG_SCHED_ON_COMP) {
1356                         if (--softc->bufs_left == 0) {
1357                                 softc->changer->flags |=
1358                                         CHANGER_MANUAL_CALL;
1359                                 softc->flags &= ~CD_FLAG_SCHED_ON_COMP;
1360                                 cdrunchangerqueue(softc->changer);
1361                         }
1362                 } else if ((bufq_first(&softc->buf_queue) == NULL)
1363                         && (softc->device_stats.busy_count == 0)) {
1364                         softc->changer->flags |= CHANGER_MANUAL_CALL;
1365                         cdrunchangerqueue(softc->changer);
1366                 }
1367         } else if ((softc->changer->flags & CHANGER_NEED_TIMEOUT)
1368                 && (softc->flags & CD_FLAG_ACTIVE)) {
1369
1370                 /*
1371                  * Now that the first transaction to this
1372                  * particular device has completed, we can go ahead
1373                  * and schedule our timeouts.
1374                  */
1375                 if ((changer->flags & CHANGER_TIMEOUT_SCHED) == 0) {
1376                         changer->long_handle =
1377                             timeout(cdrunchangerqueue, changer,
1378                                     changer_max_busy_seconds * hz);
1379                         changer->flags |= CHANGER_TIMEOUT_SCHED;
1380                 } else
1381                         printf("cdchangerschedule: already have a long"
1382                                " timeout!\n");
1383
1384                 if ((changer->flags & CHANGER_SHORT_TMOUT_SCHED) == 0) {
1385                         changer->short_handle =
1386                             timeout(cdshorttimeout, changer,
1387                                     changer_min_busy_seconds * hz);
1388                         changer->flags |= CHANGER_SHORT_TMOUT_SCHED;
1389                 } else
1390                         printf("cdchangerschedule: already have a short "
1391                                "timeout!\n");
1392
1393                 /*
1394                  * We just scheduled timeouts, no need to schedule
1395                  * more.
1396                  */
1397                 changer->flags &= ~CHANGER_NEED_TIMEOUT;
1398
1399         }
1400         splx(s);
1401 }
1402
1403 static int
1404 cdrunccb(union ccb *ccb, int (*error_routine)(union ccb *ccb,
1405                                               u_int32_t cam_flags,
1406                                               u_int32_t sense_flags),
1407          u_int32_t cam_flags, u_int32_t sense_flags)
1408 {
1409         struct cd_softc *softc;
1410         struct cam_periph *periph;
1411         int error;
1412
1413         periph = xpt_path_periph(ccb->ccb_h.path);
1414         softc = (struct cd_softc *)periph->softc;
1415
1416         error = cam_periph_runccb(ccb, error_routine, cam_flags, sense_flags,
1417                                   &softc->device_stats);
1418
1419         if (softc->flags & CD_FLAG_CHANGER)
1420                 cdchangerschedule(softc);
1421
1422         return(error);
1423 }
1424
1425 static union ccb *
1426 cdgetccb(struct cam_periph *periph, u_int32_t priority)
1427 {
1428         struct cd_softc *softc;
1429         int s;
1430
1431         softc = (struct cd_softc *)periph->softc;
1432
1433         if (softc->flags & CD_FLAG_CHANGER) {
1434
1435                 s = splsoftcam();
1436
1437                 /*
1438                  * This should work the first time this device is woken up,
1439                  * but just in case it doesn't, we use a while loop.
1440                  */
1441                 while ((softc->flags & CD_FLAG_ACTIVE) == 0) {
1442                         /*
1443                          * If this changer isn't already queued, queue it up.
1444                          */
1445                         if (softc->pinfo.index == CAM_UNQUEUED_INDEX) {
1446                                 softc->pinfo.priority = 1;
1447                                 softc->pinfo.generation =
1448                                         ++softc->changer->devq.generation;
1449                                 camq_insert(&softc->changer->devq,
1450                                             (cam_pinfo *)softc);
1451                         }
1452                         if (((softc->changer->flags & CHANGER_TIMEOUT_SCHED)==0)
1453                          && ((softc->changer->flags & CHANGER_NEED_TIMEOUT)==0)
1454                          && ((softc->changer->flags
1455                               & CHANGER_SHORT_TMOUT_SCHED)==0)) {
1456                                 softc->changer->flags |= CHANGER_MANUAL_CALL;
1457                                 cdrunchangerqueue(softc->changer);
1458                         } else
1459                                 tsleep(&softc->changer, 0, "cgticb", 0);
1460                 }
1461                 splx(s);
1462         }
1463         return(cam_periph_getccb(periph, priority));
1464 }
1465
1466
1467 /*
1468  * Actually translate the requested transfer into one the physical driver
1469  * can understand.  The transfer is described by a buf and will include
1470  * only one physical transfer.
1471  */
1472 static void
1473 cdstrategy(struct buf *bp)
1474 {
1475         struct cam_periph *periph;
1476         struct cd_softc *softc;
1477         u_int  unit, part;
1478         int    s;
1479
1480         unit = dkunit(bp->b_dev);
1481         part = dkpart(bp->b_dev);
1482         periph = cam_extend_get(cdperiphs, unit);
1483         if (periph == NULL) {
1484                 bp->b_error = ENXIO;
1485                 goto bad;
1486         }
1487
1488         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("entering cdstrategy\n"));
1489
1490         softc = (struct cd_softc *)periph->softc;
1491
1492         /*
1493          * Mask interrupts so that the pack cannot be invalidated until
1494          * after we are in the queue.  Otherwise, we might not properly
1495          * clean up one of the buffers.
1496          */
1497         s = splbio();
1498
1499         /*
1500          * If the device has been made invalid, error out
1501          */
1502         if ((softc->flags & CD_FLAG_INVALID)) {
1503                 splx(s);
1504                 bp->b_error = ENXIO;
1505                 goto bad;
1506         }
1507
1508         /*
1509          * If we don't have valid media, look for it before trying to
1510          * schedule the I/O.
1511          */
1512         if ((softc->flags & CD_FLAG_VALID_MEDIA) == 0) {
1513                 int error;
1514
1515                 error = cdcheckmedia(periph);
1516                 if (error != 0) {
1517                         splx(s);
1518                         bp->b_error = error;
1519                         goto bad;
1520                 }
1521         }
1522
1523         /*
1524          * Place it in the queue of disk activities for this disk
1525          */
1526         bufqdisksort(&softc->buf_queue, bp);
1527
1528         splx(s);
1529
1530         /*
1531          * Schedule ourselves for performing the work.  We do things
1532          * differently for changers.
1533          */
1534         if ((softc->flags & CD_FLAG_CHANGER) == 0)
1535                 xpt_schedule(periph, /* XXX priority */1);
1536         else
1537                 cdschedule(periph, /* priority */ 1);
1538
1539         return;
1540 bad:
1541         bp->b_flags |= B_ERROR;
1542         /*
1543          * Correctly set the buf to indicate a completed xfer
1544          */
1545         bp->b_resid = bp->b_bcount;
1546         biodone(bp);
1547         return;
1548 }
1549
1550 static void
1551 cdstart(struct cam_periph *periph, union ccb *start_ccb)
1552 {
1553         struct cd_softc *softc;
1554         struct buf *bp;
1555         struct ccb_scsiio *csio;
1556         struct scsi_read_capacity_data *rcap;
1557         int s;
1558
1559         softc = (struct cd_softc *)periph->softc;
1560
1561         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("entering cdstart\n"));
1562
1563         switch (softc->state) {
1564         case CD_STATE_NORMAL:
1565         {
1566                 int oldspl;
1567
1568                 s = splbio();
1569                 bp = bufq_first(&softc->buf_queue);
1570                 if (periph->immediate_priority <= periph->pinfo.priority) {
1571                         start_ccb->ccb_h.ccb_state = CD_CCB_WAITING;
1572
1573                         SLIST_INSERT_HEAD(&periph->ccb_list, &start_ccb->ccb_h,
1574                                           periph_links.sle);
1575                         periph->immediate_priority = CAM_PRIORITY_NONE;
1576                         splx(s);
1577                         wakeup(&periph->ccb_list);
1578                 } else if (bp == NULL) {
1579                         splx(s);
1580                         xpt_release_ccb(start_ccb);
1581                 } else {
1582                         bufq_remove(&softc->buf_queue, bp);
1583
1584                         devstat_start_transaction(&softc->device_stats);
1585
1586                         scsi_read_write(&start_ccb->csio,
1587                                         /*retries*/4,
1588                                         /* cbfcnp */ cddone,
1589                                         (bp->b_flags & B_ORDERED) != 0 ?
1590                                             MSG_ORDERED_Q_TAG :
1591                                             MSG_SIMPLE_Q_TAG,
1592                                         /* read */bp->b_flags & B_READ,
1593                                         /* byte2 */ 0,
1594                                         /* minimum_cmd_size */ 10,
1595                                         /* lba */ bp->b_pblkno,
1596                                         bp->b_bcount / softc->params.blksize,
1597                                         /* data_ptr */ bp->b_data,
1598                                         /* dxfer_len */ bp->b_bcount,
1599                                         /* sense_len */ SSD_FULL_SIZE,
1600                                         /* timeout */ 30000);
1601                         start_ccb->ccb_h.ccb_state = CD_CCB_BUFFER_IO;
1602
1603
1604                         /*
1605                          * Block out any asyncronous callbacks
1606                          * while we touch the pending ccb list.
1607                          */
1608                         oldspl = splcam();
1609                         LIST_INSERT_HEAD(&softc->pending_ccbs,
1610                                          &start_ccb->ccb_h, periph_links.le);
1611                         splx(oldspl);
1612
1613                         /* We expect a unit attention from this device */
1614                         if ((softc->flags & CD_FLAG_RETRY_UA) != 0) {
1615                                 start_ccb->ccb_h.ccb_state |= CD_CCB_RETRY_UA;
1616                                 softc->flags &= ~CD_FLAG_RETRY_UA;
1617                         }
1618
1619                         start_ccb->ccb_h.ccb_bp = bp;
1620                         bp = bufq_first(&softc->buf_queue);
1621                         splx(s);
1622
1623                         xpt_action(start_ccb);
1624                 }
1625                 if (bp != NULL) {
1626                         /* Have more work to do, so ensure we stay scheduled */
1627                         xpt_schedule(periph, /* XXX priority */1);
1628                 }
1629                 break;
1630         }
1631         case CD_STATE_PROBE:
1632         {
1633
1634                 rcap = (struct scsi_read_capacity_data *)malloc(sizeof(*rcap),
1635                                                                 M_TEMP,
1636                                                                 M_NOWAIT);
1637                 if (rcap == NULL) {
1638                         xpt_print_path(periph->path);
1639                         printf("cdstart: Couldn't malloc read_capacity data\n");
1640                         /* cd_free_periph??? */
1641                         break;
1642                 }
1643                 csio = &start_ccb->csio;
1644                 scsi_read_capacity(csio,
1645                                    /*retries*/1,
1646                                    cddone,
1647                                    MSG_SIMPLE_Q_TAG,
1648                                    rcap,
1649                                    SSD_FULL_SIZE,
1650                                    /*timeout*/20000);
1651                 start_ccb->ccb_h.ccb_bp = NULL;
1652                 start_ccb->ccb_h.ccb_state = CD_CCB_PROBE;
1653                 xpt_action(start_ccb);
1654                 break;
1655         }
1656         }
1657 }
1658
1659 static void
1660 cddone(struct cam_periph *periph, union ccb *done_ccb)
1661 {
1662         struct cd_softc *softc;
1663         struct ccb_scsiio *csio;
1664
1665         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("entering cddone\n"));
1666
1667         softc = (struct cd_softc *)periph->softc;
1668         csio = &done_ccb->csio;
1669
1670         switch (csio->ccb_h.ccb_state & CD_CCB_TYPE_MASK) {
1671         case CD_CCB_BUFFER_IO:
1672         {
1673                 struct buf      *bp;
1674                 int             error;
1675                 int             oldspl;
1676
1677                 bp = (struct buf *)done_ccb->ccb_h.ccb_bp;
1678                 error = 0;
1679
1680                 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1681                         int sf;
1682
1683                         if ((done_ccb->ccb_h.ccb_state & CD_CCB_RETRY_UA) != 0)
1684                                 sf = SF_RETRY_UA;
1685                         else
1686                                 sf = 0;
1687
1688                         /* Retry selection timeouts */
1689                         sf |= SF_RETRY_SELTO;
1690
1691                         if ((error = cderror(done_ccb, 0, sf)) == ERESTART) {
1692                                 /*
1693                                  * A retry was scheuled, so
1694                                  * just return.
1695                                  */
1696                                 return;
1697                         }
1698                 }
1699
1700                 if (error != 0) {
1701                         int s;
1702                         struct buf *q_bp;
1703
1704                         xpt_print_path(periph->path);
1705                         printf("cddone: got error %#x back\n", error);
1706                         s = splbio();
1707                         while ((q_bp = bufq_first(&softc->buf_queue)) != NULL) {
1708                                 bufq_remove(&softc->buf_queue, q_bp);
1709                                 q_bp->b_resid = q_bp->b_bcount;
1710                                 q_bp->b_error = EIO;
1711                                 q_bp->b_flags |= B_ERROR;
1712                                 biodone(q_bp);
1713                         }
1714                         splx(s);
1715                         bp->b_resid = bp->b_bcount;
1716                         bp->b_error = error;
1717                         bp->b_flags |= B_ERROR;
1718                         cam_release_devq(done_ccb->ccb_h.path,
1719                                          /*relsim_flags*/0,
1720                                          /*reduction*/0,
1721                                          /*timeout*/0,
1722                                          /*getcount_only*/0);
1723
1724                 } else {
1725                         bp->b_resid = csio->resid;
1726                         bp->b_error = 0;
1727                         if (bp->b_resid != 0) {
1728                                 /* Short transfer ??? */
1729                                 bp->b_flags |= B_ERROR;
1730                         }
1731                 }
1732
1733                 /*
1734                  * Block out any asyncronous callbacks
1735                  * while we touch the pending ccb list.
1736                  */
1737                 oldspl = splcam();
1738                 LIST_REMOVE(&done_ccb->ccb_h, periph_links.le);
1739                 splx(oldspl);
1740
1741                 if (softc->flags & CD_FLAG_CHANGER)
1742                         cdchangerschedule(softc);
1743
1744                 devstat_end_transaction_buf(&softc->device_stats, bp);
1745                 biodone(bp);
1746                 break;
1747         }
1748         case CD_CCB_PROBE:
1749         {
1750                 struct     scsi_read_capacity_data *rdcap;
1751                 char       announce_buf[120]; /*
1752                                                * Currently (9/30/97) the
1753                                                * longest possible announce
1754                                                * buffer is 108 bytes, for the
1755                                                * first error case below.
1756                                                * That is 39 bytes for the
1757                                                * basic string, 16 bytes for the
1758                                                * biggest sense key (hardware
1759                                                * error), 52 bytes for the
1760                                                * text of the largest sense
1761                                                * qualifier valid for a CDROM,
1762                                                * (0x72, 0x03 or 0x04,
1763                                                * 0x03), and one byte for the
1764                                                * null terminating character.
1765                                                * To allow for longer strings,
1766                                                * the announce buffer is 120
1767                                                * bytes.
1768                                                */
1769                 struct     cd_params *cdp;
1770
1771                 cdp = &softc->params;
1772
1773                 rdcap = (struct scsi_read_capacity_data *)csio->data_ptr;
1774
1775                 cdp->disksize = scsi_4btoul (rdcap->addr) + 1;
1776                 cdp->blksize = scsi_4btoul (rdcap->length);
1777
1778                 if ((csio->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP) {
1779
1780                         snprintf(announce_buf, sizeof(announce_buf),
1781                                 "cd present [%lu x %lu byte records]",
1782                                 cdp->disksize, (u_long)cdp->blksize);
1783
1784                 } else {
1785                         int     error;
1786                         /*
1787                          * Retry any UNIT ATTENTION type errors.  They
1788                          * are expected at boot.
1789                          */
1790                         error = cderror(done_ccb, 0, SF_RETRY_UA |
1791                                         SF_NO_PRINT | SF_RETRY_SELTO);
1792                         if (error == ERESTART) {
1793                                 /*
1794                                  * A retry was scheuled, so
1795                                  * just return.
1796                                  */
1797                                 return;
1798                         } else if (error != 0) {
1799
1800                                 struct scsi_sense_data *sense;
1801                                 int asc, ascq;
1802                                 int sense_key, error_code;
1803                                 int have_sense;
1804                                 cam_status status;
1805                                 struct ccb_getdev cgd;
1806
1807                                 /* Don't wedge this device's queue */
1808                                 cam_release_devq(done_ccb->ccb_h.path,
1809                                                  /*relsim_flags*/0,
1810                                                  /*reduction*/0,
1811                                                  /*timeout*/0,
1812                                                  /*getcount_only*/0);
1813
1814                                 status = done_ccb->ccb_h.status;
1815
1816                                 xpt_setup_ccb(&cgd.ccb_h,
1817                                               done_ccb->ccb_h.path,
1818                                               /* priority */ 1);
1819                                 cgd.ccb_h.func_code = XPT_GDEV_TYPE;
1820                                 xpt_action((union ccb *)&cgd);
1821
1822                                 if (((csio->ccb_h.flags & CAM_SENSE_PHYS) != 0)
1823                                  || ((csio->ccb_h.flags & CAM_SENSE_PTR) != 0)
1824                                  || ((status & CAM_AUTOSNS_VALID) == 0))
1825                                         have_sense = FALSE;
1826                                 else
1827                                         have_sense = TRUE;
1828
1829                                 if (have_sense) {
1830                                         sense = &csio->sense_data;
1831                                         scsi_extract_sense(sense, &error_code,
1832                                                            &sense_key,
1833                                                            &asc, &ascq);
1834                                 }
1835                                 /*
1836                                  * Attach to anything that claims to be a
1837                                  * CDROM or WORM device, as long as it
1838                                  * doesn't return a "Logical unit not
1839                                  * supported" (0x25) error.
1840                                  */
1841                                 if ((have_sense) && (asc != 0x25)
1842                                  && (error_code == SSD_CURRENT_ERROR))
1843                                         snprintf(announce_buf,
1844                                             sizeof(announce_buf),
1845                                                 "Attempt to query device "
1846                                                 "size failed: %s, %s",
1847                                                 scsi_sense_key_text[sense_key],
1848                                                 scsi_sense_desc(asc,ascq,
1849                                                                 &cgd.inq_data));
1850                                 else if ((have_sense == 0)
1851                                       && ((status & CAM_STATUS_MASK) ==
1852                                            CAM_SCSI_STATUS_ERROR)
1853                                       && (csio->scsi_status ==
1854                                           SCSI_STATUS_BUSY)) {
1855                                         snprintf(announce_buf,
1856                                             sizeof(announce_buf),
1857                                             "Attempt to query device "
1858                                             "size failed: SCSI status: BUSY");
1859                                 } else if (SID_TYPE(&cgd.inq_data) == T_CDROM) {
1860                                         /*
1861                                          * We only print out an error for
1862                                          * CDROM type devices.  For WORM
1863                                          * devices, we don't print out an
1864                                          * error since a few WORM devices
1865                                          * don't support CDROM commands.
1866                                          * If we have sense information, go
1867                                          * ahead and print it out.
1868                                          * Otherwise, just say that we
1869                                          * couldn't attach.
1870                                          */
1871
1872                                         /*
1873                                          * Just print out the error, not
1874                                          * the full probe message, when we
1875                                          * don't attach.
1876                                          */
1877                                         if (have_sense)
1878                                                 scsi_sense_print(
1879                                                         &done_ccb->csio);
1880                                         else {
1881                                                 xpt_print_path(periph->path);
1882                                                 printf("got CAM status %#x\n",
1883                                                        done_ccb->ccb_h.status);
1884                                         }
1885                                         xpt_print_path(periph->path);
1886                                         printf("fatal error, failed"
1887                                                " to attach to device\n");
1888
1889                                         /*
1890                                          * Invalidate this peripheral.
1891                                          */
1892                                         cam_periph_invalidate(periph);
1893
1894                                         announce_buf[0] = '\0';
1895                                 } else {
1896
1897                                         /*
1898                                          * Invalidate this peripheral.
1899                                          */
1900                                         cam_periph_invalidate(periph);
1901                                         announce_buf[0] = '\0';
1902                                 }
1903                         }
1904                 }
1905                 free(rdcap, M_TEMP);
1906                 if (announce_buf[0] != '\0') {
1907                         xpt_announce_periph(periph, announce_buf);
1908                         if (softc->flags & CD_FLAG_CHANGER)
1909                                 cdchangerschedule(softc);
1910                         /*
1911                          * Create our sysctl variables, now that we know
1912                          * we have successfully attached.
1913                          */
1914                         taskqueue_enqueue(taskqueue_thread,&softc->sysctl_task);
1915                 }
1916                 softc->state = CD_STATE_NORMAL;
1917                 /*
1918                  * Since our peripheral may be invalidated by an error
1919                  * above or an external event, we must release our CCB
1920                  * before releasing the probe lock on the peripheral.
1921                  * The peripheral will only go away once the last lock
1922                  * is removed, and we need it around for the CCB release
1923                  * operation.
1924                  */
1925                 xpt_release_ccb(done_ccb);
1926                 cam_periph_unlock(periph);
1927                 return;
1928         }
1929         case CD_CCB_WAITING:
1930         {
1931                 /* Caller will release the CCB */
1932                 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE,
1933                           ("trying to wakeup ccbwait\n"));
1934
1935                 wakeup(&done_ccb->ccb_h.cbfcnp);
1936                 return;
1937         }
1938         default:
1939                 break;
1940         }
1941         xpt_release_ccb(done_ccb);
1942 }
1943
1944 static union cd_pages *
1945 cdgetpage(struct cd_mode_params *mode_params)
1946 {
1947         union cd_pages *page;
1948
1949         if (mode_params->cdb_size == 10)
1950                 page = (union cd_pages *)find_mode_page_10(
1951                         (struct scsi_mode_header_10 *)mode_params->mode_buf);
1952         else
1953                 page = (union cd_pages *)find_mode_page_6(
1954                         (struct scsi_mode_header_6 *)mode_params->mode_buf);
1955
1956         return (page);
1957 }
1958
1959 static int
1960 cdgetpagesize(int page_num)
1961 {
1962         int i;
1963
1964         for (i = 0; i < (sizeof(cd_page_size_table)/
1965             sizeof(cd_page_size_table[0])); i++) {
1966                 if (cd_page_size_table[i].page == page_num)
1967                         return (cd_page_size_table[i].page_size);
1968         }
1969         return (-1);
1970 }
1971
1972 static int
1973 cdioctl(dev_t dev, u_long cmd, caddr_t addr, int flag, struct thread *td)
1974 {
1975
1976         struct  cam_periph *periph;
1977         struct  cd_softc *softc;
1978         int     error, unit;
1979
1980         unit = dkunit(dev);
1981
1982         periph = cam_extend_get(cdperiphs, unit);
1983         if (periph == NULL)
1984                 return(ENXIO);
1985
1986         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("entering cdioctl\n"));
1987
1988         softc = (struct cd_softc *)periph->softc;
1989
1990         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE,
1991                   ("trying to do ioctl %#lx\n", cmd));
1992
1993         error = cam_periph_lock(periph, PCATCH);
1994
1995         if (error != 0)
1996                 return(error);
1997
1998         /*
1999          * If we don't have media loaded, check for it.  If still don't
2000          * have media loaded, we can only do a load or eject.
2001          */
2002         if (((softc->flags & CD_FLAG_VALID_MEDIA) == 0)
2003             && ((cmd != CDIOCCLOSE)
2004             && (cmd != CDIOCEJECT))) {
2005                 error = cdcheckmedia(periph);
2006                 if (error != 0) {
2007                         cam_periph_unlock(periph);
2008                         return (error);
2009                 }
2010         }
2011
2012         switch (cmd) {
2013
2014         case CDIOCPLAYTRACKS:
2015                 {
2016                         struct ioc_play_track *args
2017                             = (struct ioc_play_track *) addr;
2018                         struct cd_mode_params params;
2019                         union cd_pages *page;
2020
2021                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2022                         params.mode_buf = malloc(params.alloc_len, M_TEMP,
2023                                                  M_WAITOK | M_ZERO);
2024
2025                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2026                                   ("trying to do CDIOCPLAYTRACKS\n"));
2027
2028                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2029                         if (error) {
2030                                 free(params.mode_buf, M_TEMP);
2031                                 break;
2032                         }
2033                         page = cdgetpage(&params);
2034
2035                         page->audio.flags &= ~CD_PA_SOTC;
2036                         page->audio.flags |= CD_PA_IMMED;
2037                         error = cdsetmode(periph, &params);
2038                         free(params.mode_buf, M_TEMP);
2039                         if (error)
2040                                 break;
2041
2042                         /*
2043                          * This was originally implemented with the PLAY
2044                          * AUDIO TRACK INDEX command, but that command was
2045                          * deprecated after SCSI-2.  Most (all?) SCSI CDROM
2046                          * drives support it but ATAPI and ATAPI-derivative
2047                          * drives don't seem to support it.  So we keep a
2048                          * cache of the table of contents and translate
2049                          * track numbers to MSF format.
2050                          */
2051                         if (softc->flags & CD_FLAG_VALID_TOC) {
2052                                 union msf_lba *sentry, *eentry;
2053                                 int st, et;
2054
2055                                 if (args->end_track <
2056                                     softc->toc.header.ending_track + 1)
2057                                         args->end_track++;
2058                                 if (args->end_track >
2059                                     softc->toc.header.ending_track + 1)
2060                                         args->end_track =
2061                                             softc->toc.header.ending_track + 1;
2062                                 st = args->start_track -
2063                                         softc->toc.header.starting_track;
2064                                 et = args->end_track -
2065                                         softc->toc.header.starting_track;
2066                                 if ((st < 0)
2067                                  || (et < 0)
2068                                  || (st > (softc->toc.header.ending_track -
2069                                      softc->toc.header.starting_track))) {
2070                                         error = EINVAL;
2071                                         break;
2072                                 }
2073                                 sentry = &softc->toc.entries[st].addr;
2074                                 eentry = &softc->toc.entries[et].addr;
2075                                 error = cdplaymsf(periph,
2076                                                   sentry->msf.minute,
2077                                                   sentry->msf.second,
2078                                                   sentry->msf.frame,
2079                                                   eentry->msf.minute,
2080                                                   eentry->msf.second,
2081                                                   eentry->msf.frame);
2082                         } else {
2083                                 /*
2084                                  * If we don't have a valid TOC, try the
2085                                  * play track index command.  It is part of
2086                                  * the SCSI-2 spec, but was removed in the
2087                                  * MMC specs.  ATAPI and ATAPI-derived
2088                                  * drives don't support it.
2089                                  */
2090                                 if (softc->quirks & CD_Q_BCD_TRACKS) {
2091                                         args->start_track =
2092                                                 bin2bcd(args->start_track);
2093                                         args->end_track =
2094                                                 bin2bcd(args->end_track);
2095                                 }
2096                                 error = cdplaytracks(periph,
2097                                                      args->start_track,
2098                                                      args->start_index,
2099                                                      args->end_track,
2100                                                      args->end_index);
2101                         }
2102                 }
2103                 break;
2104         case CDIOCPLAYMSF:
2105                 {
2106                         struct ioc_play_msf *args
2107                                 = (struct ioc_play_msf *) addr;
2108                         struct cd_mode_params params;
2109                         union cd_pages *page;
2110
2111                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2112                         params.mode_buf = malloc(params.alloc_len, M_TEMP,
2113                                                  M_WAITOK | M_ZERO);
2114
2115                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2116                                   ("trying to do CDIOCPLAYMSF\n"));
2117
2118                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2119                         if (error) {
2120                                 free(params.mode_buf, M_TEMP);
2121                                 break;
2122                         }
2123                         page = cdgetpage(&params);
2124
2125                         page->audio.flags &= ~CD_PA_SOTC;
2126                         page->audio.flags |= CD_PA_IMMED;
2127                         error = cdsetmode(periph, &params);
2128                         free(params.mode_buf, M_TEMP);
2129                         if (error)
2130                                 break;
2131                         error = cdplaymsf(periph,
2132                                           args->start_m,
2133                                           args->start_s,
2134                                           args->start_f,
2135                                           args->end_m,
2136                                           args->end_s,
2137                                           args->end_f);
2138                 }
2139                 break;
2140         case CDIOCPLAYBLOCKS:
2141                 {
2142                         struct ioc_play_blocks *args
2143                                 = (struct ioc_play_blocks *) addr;
2144                         struct cd_mode_params params;
2145                         union cd_pages *page;
2146
2147                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2148                                   ("trying to do CDIOCPLAYBLOCKS\n"));
2149
2150                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2151                         params.mode_buf = malloc(params.alloc_len, M_TEMP,
2152                                                  M_WAITOK | M_ZERO);
2153
2154                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2155                         if (error) {
2156                                 free(params.mode_buf, M_TEMP);
2157                                 break;
2158                         }
2159                         page = cdgetpage(&params);
2160
2161                         page->audio.flags &= ~CD_PA_SOTC;
2162                         page->audio.flags |= CD_PA_IMMED;
2163                         error = cdsetmode(periph, &params);
2164                         free(params.mode_buf, M_TEMP);
2165                         if (error)
2166                                 break;
2167                         error = cdplay(periph, args->blk, args->len);
2168                 }
2169                 break;
2170         case CDIOCREADSUBCHANNEL:
2171                 {
2172                         struct ioc_read_subchannel *args
2173                                 = (struct ioc_read_subchannel *) addr;
2174                         struct cd_sub_channel_info *data;
2175                         u_int32_t len = args->data_len;
2176
2177                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2178                                   ("trying to do CDIOCREADSUBCHANNEL\n"));
2179
2180                         data = malloc(sizeof(struct cd_sub_channel_info),
2181                                       M_TEMP, M_WAITOK);
2182
2183                         if ((len > sizeof(struct cd_sub_channel_info)) ||
2184                             (len < sizeof(struct cd_sub_channel_header))) {
2185                                 printf(
2186                                         "scsi_cd: cdioctl: "
2187                                         "cdioreadsubchannel: error, len=%d\n",
2188                                         len);
2189                                 error = EINVAL;
2190                                 free(data, M_TEMP);
2191                                 break;
2192                         }
2193
2194                         if (softc->quirks & CD_Q_BCD_TRACKS)
2195                                 args->track = bin2bcd(args->track);
2196
2197                         error = cdreadsubchannel(periph, args->address_format,
2198                                 args->data_format, args->track, data, len);
2199
2200                         if (error) {
2201                                 free(data, M_TEMP);
2202                                 break;
2203                         }
2204                         if (softc->quirks & CD_Q_BCD_TRACKS)
2205                                 data->what.track_info.track_number =
2206                                     bcd2bin(data->what.track_info.track_number);
2207                         len = min(len, ((data->header.data_len[0] << 8) +
2208                                 data->header.data_len[1] +
2209                                 sizeof(struct cd_sub_channel_header)));
2210                         if (copyout(data, args->data, len) != 0) {
2211                                 error = EFAULT;
2212                         }
2213                         free(data, M_TEMP);
2214                 }
2215                 break;
2216
2217         case CDIOREADTOCHEADER:
2218                 {
2219                         struct ioc_toc_header *th;
2220
2221                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2222                                   ("trying to do CDIOREADTOCHEADER\n"));
2223
2224                         th = malloc(sizeof(struct ioc_toc_header), M_TEMP,
2225                                     M_WAITOK);
2226                         error = cdreadtoc(periph, 0, 0, (u_int8_t *)th,
2227                                           sizeof (*th), /*sense_flags*/0);
2228                         if (error) {
2229                                 free(th, M_TEMP);
2230                                 break;
2231                         }
2232                         if (softc->quirks & CD_Q_BCD_TRACKS) {
2233                                 /* we are going to have to convert the BCD
2234                                  * encoding on the cd to what is expected
2235                                  */
2236                                 th->starting_track =
2237                                         bcd2bin(th->starting_track);
2238                                 th->ending_track = bcd2bin(th->ending_track);
2239                         }
2240                         NTOHS(th->len);
2241                         bcopy(th, addr, sizeof(*th));
2242                         free(th, M_TEMP);
2243                 }
2244                 break;
2245         case CDIOREADTOCENTRYS:
2246                 {
2247                         struct cd_tocdata *data;
2248                         struct cd_toc_single *lead;
2249                         struct ioc_read_toc_entry *te =
2250                                 (struct ioc_read_toc_entry *) addr;
2251                         struct ioc_toc_header *th;
2252                         u_int32_t len, readlen, idx, num;
2253                         u_int32_t starting_track = te->starting_track;
2254
2255                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2256                                   ("trying to do CDIOREADTOCENTRYS\n"));
2257
2258                         data = malloc(sizeof(*data), M_TEMP, M_WAITOK);
2259                         lead = malloc(sizeof(*lead), M_TEMP, M_WAITOK);
2260
2261                         if (te->data_len < sizeof(struct cd_toc_entry)
2262                          || (te->data_len % sizeof(struct cd_toc_entry)) != 0
2263                          || (te->address_format != CD_MSF_FORMAT
2264                           && te->address_format != CD_LBA_FORMAT)) {
2265                                 error = EINVAL;
2266                                 printf("scsi_cd: error in readtocentries, "
2267                                        "returning EINVAL\n");
2268                                 free(data, M_TEMP);
2269                                 free(lead, M_TEMP);
2270                                 break;
2271                         }
2272
2273                         th = &data->header;
2274                         error = cdreadtoc(periph, 0, 0, (u_int8_t *)th,
2275                                           sizeof (*th), /*sense_flags*/0);
2276                         if (error) {
2277                                 free(data, M_TEMP);
2278                                 free(lead, M_TEMP);
2279                                 break;
2280                         }
2281
2282                         if (softc->quirks & CD_Q_BCD_TRACKS) {
2283                                 /* we are going to have to convert the BCD
2284                                  * encoding on the cd to what is expected
2285                                  */
2286                                 th->starting_track =
2287                                     bcd2bin(th->starting_track);
2288                                 th->ending_track = bcd2bin(th->ending_track);
2289                         }
2290
2291                         if (starting_track == 0)
2292                                 starting_track = th->starting_track;
2293                         else if (starting_track == LEADOUT)
2294                                 starting_track = th->ending_track + 1;
2295                         else if (starting_track < th->starting_track ||
2296                                  starting_track > th->ending_track + 1) {
2297                                 printf("scsi_cd: error in readtocentries, "
2298                                        "returning EINVAL\n");
2299                                 free(data, M_TEMP);
2300                                 free(lead, M_TEMP);
2301                                 error = EINVAL;
2302                                 break;
2303                         }
2304
2305                         /* calculate reading length without leadout entry */
2306                         readlen = (th->ending_track - starting_track + 1) *
2307                                   sizeof(struct cd_toc_entry);
2308
2309                         /* and with leadout entry */
2310                         len = readlen + sizeof(struct cd_toc_entry);
2311                         if (te->data_len < len) {
2312                                 len = te->data_len;
2313                                 if (readlen > len)
2314                                         readlen = len;
2315                         }
2316                         if (len > sizeof(data->entries)) {
2317                                 printf("scsi_cd: error in readtocentries, "
2318                                        "returning EINVAL\n");
2319                                 error = EINVAL;
2320                                 free(data, M_TEMP);
2321                                 free(lead, M_TEMP);
2322                                 break;
2323                         }
2324                         num = len / sizeof(struct cd_toc_entry);
2325
2326                         if (readlen > 0) {
2327                                 error = cdreadtoc(periph, te->address_format,
2328                                                   starting_track,
2329                                                   (u_int8_t *)data,
2330                                                   readlen + sizeof (*th),
2331                                                   /*sense_flags*/0);
2332                                 if (error) {
2333                                         free(data, M_TEMP);
2334                                         free(lead, M_TEMP);
2335                                         break;
2336                                 }
2337                         }
2338
2339                         /* make leadout entry if needed */
2340                         idx = starting_track + num - 1;
2341                         if (softc->quirks & CD_Q_BCD_TRACKS)
2342                                 th->ending_track = bcd2bin(th->ending_track);
2343                         if (idx == th->ending_track + 1) {
2344                                 error = cdreadtoc(periph, te->address_format,
2345                                                   LEADOUT, (u_int8_t *)lead,
2346                                                   sizeof(*lead),
2347                                                   /*sense_flags*/0);
2348                                 if (error) {
2349                                         free(data, M_TEMP);
2350                                         free(lead, M_TEMP);
2351                                         break;
2352                                 }
2353                                 data->entries[idx - starting_track] =
2354                                         lead->entry;
2355                         }
2356                         if (softc->quirks & CD_Q_BCD_TRACKS) {
2357                                 for (idx = 0; idx < num - 1; idx++) {
2358                                         data->entries[idx].track =
2359                                             bcd2bin(data->entries[idx].track);
2360                                 }
2361                         }
2362
2363                         error = copyout(data->entries, te->data, len);
2364                         free(data, M_TEMP);
2365                         free(lead, M_TEMP);
2366                 }
2367                 break;
2368         case CDIOREADTOCENTRY:
2369                 {
2370                         struct cd_toc_single *data;
2371                         struct ioc_read_toc_single_entry *te =
2372                                 (struct ioc_read_toc_single_entry *) addr;
2373                         struct ioc_toc_header *th;
2374                         u_int32_t track;
2375
2376                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2377                                   ("trying to do CDIOREADTOCENTRY\n"));
2378
2379                         data = malloc(sizeof(*data), M_TEMP, M_WAITOK);
2380
2381                         if (te->address_format != CD_MSF_FORMAT
2382                             && te->address_format != CD_LBA_FORMAT) {
2383                                 printf("error in readtocentry, "
2384                                        " returning EINVAL\n");
2385                                 free(data, M_TEMP);
2386                                 error = EINVAL;
2387                                 break;
2388                         }
2389
2390                         th = &data->header;
2391                         error = cdreadtoc(periph, 0, 0, (u_int8_t *)th,
2392                                           sizeof (*th), /*sense_flags*/0);
2393                         if (error) {
2394                                 free(data, M_TEMP);
2395                                 break;
2396                         }
2397
2398                         if (softc->quirks & CD_Q_BCD_TRACKS) {
2399                                 /* we are going to have to convert the BCD
2400                                  * encoding on the cd to what is expected
2401                                  */
2402                                 th->starting_track =
2403                                     bcd2bin(th->starting_track);
2404                                 th->ending_track = bcd2bin(th->ending_track);
2405                         }
2406                         track = te->track;
2407                         if (track == 0)
2408                                 track = th->starting_track;
2409                         else if (track == LEADOUT)
2410                                 /* OK */;
2411                         else if (track < th->starting_track ||
2412                                  track > th->ending_track + 1) {
2413                                 printf("error in readtocentry, "
2414                                        " returning EINVAL\n");
2415                                 free(data, M_TEMP);
2416                                 error = EINVAL;
2417                                 break;
2418                         }
2419
2420                         error = cdreadtoc(periph, te->address_format, track,
2421                                           (u_int8_t *)data, sizeof(*data),
2422                                           /*sense_flags*/0);
2423                         if (error) {
2424                                 free(data, M_TEMP);
2425                                 break;
2426                         }
2427
2428                         if (softc->quirks & CD_Q_BCD_TRACKS)
2429                                 data->entry.track = bcd2bin(data->entry.track);
2430                         bcopy(&data->entry, &te->entry,
2431                               sizeof(struct cd_toc_entry));
2432                         free(data, M_TEMP);
2433                 }
2434                 break;
2435         case CDIOCSETPATCH:
2436                 {
2437                         struct ioc_patch *arg = (struct ioc_patch *)addr;
2438                         struct cd_mode_params params;
2439                         union cd_pages *page;
2440
2441                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2442                                   ("trying to do CDIOCSETPATCH\n"));
2443
2444                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2445                         params.mode_buf = malloc(params.alloc_len, M_TEMP,
2446                                                  M_WAITOK | M_ZERO);
2447                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2448                         if (error) {
2449                                 free(params.mode_buf, M_TEMP);
2450                                 break;
2451                         }
2452                         page = cdgetpage(&params);
2453
2454                         page->audio.port[LEFT_PORT].channels =
2455                                 arg->patch[0];
2456                         page->audio.port[RIGHT_PORT].channels =
2457                                 arg->patch[1];
2458                         page->audio.port[2].channels = arg->patch[2];
2459                         page->audio.port[3].channels = arg->patch[3];
2460                         error = cdsetmode(periph, &params);
2461                         free(params.mode_buf, M_TEMP);
2462                 }
2463                 break;
2464         case CDIOCGETVOL:
2465                 {
2466                         struct ioc_vol *arg = (struct ioc_vol *) addr;
2467                         struct cd_mode_params params;
2468                         union cd_pages *page;
2469
2470                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2471                                   ("trying to do CDIOCGETVOL\n"));
2472
2473                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2474                         params.mode_buf = malloc(params.alloc_len, M_TEMP,
2475                                                  M_WAITOK | M_ZERO);
2476                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2477                         if (error) {
2478                                 free(params.mode_buf, M_TEMP);
2479                                 break;
2480                         }
2481                         page = cdgetpage(&params);
2482
2483                         arg->vol[LEFT_PORT] =
2484                                 page->audio.port[LEFT_PORT].volume;
2485                         arg->vol[RIGHT_PORT] =
2486                                 page->audio.port[RIGHT_PORT].volume;
2487                         arg->vol[2] = page->audio.port[2].volume;
2488                         arg->vol[3] = page->audio.port[3].volume;
2489                         free(params.mode_buf, M_TEMP);
2490                 }
2491                 break;
2492         case CDIOCSETVOL:
2493                 {
2494                         struct ioc_vol *arg = (struct ioc_vol *) addr;
2495                         struct cd_mode_params params;
2496                         union cd_pages *page;
2497
2498                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2499                                   ("trying to do CDIOCSETVOL\n"));
2500
2501                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2502                         params.mode_buf = malloc(params.alloc_len, M_TEMP,
2503                                                  M_WAITOK | M_ZERO);
2504                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2505                         if (error) {
2506                                 free(params.mode_buf, M_TEMP);
2507                                 break;
2508                         }
2509                         page = cdgetpage(&params);
2510
2511                         page->audio.port[LEFT_PORT].channels = CHANNEL_0;
2512                         page->audio.port[LEFT_PORT].volume =
2513                                 arg->vol[LEFT_PORT];
2514                         page->audio.port[RIGHT_PORT].channels = CHANNEL_1;
2515                         page->audio.port[RIGHT_PORT].volume =
2516                                 arg->vol[RIGHT_PORT];
2517                         page->audio.port[2].volume = arg->vol[2];
2518                         page->audio.port[3].volume = arg->vol[3];
2519                         error = cdsetmode(periph, &params);
2520                         free(params.mode_buf, M_TEMP);
2521                 }
2522                 break;
2523         case CDIOCSETMONO:
2524                 {
2525                         struct cd_mode_params params;
2526                         union cd_pages *page;
2527
2528                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2529                                   ("trying to do CDIOCSETMONO\n"));
2530
2531                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2532                         params.mode_buf = malloc(params.alloc_len, M_TEMP,
2533                                                  M_WAITOK | M_ZERO);
2534                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2535                         if (error) {
2536                                 free(params.mode_buf, M_TEMP);
2537                                 break;
2538                         }
2539                         page = cdgetpage(&params);
2540
2541                         page->audio.port[LEFT_PORT].channels =
2542                                 LEFT_CHANNEL | RIGHT_CHANNEL;
2543                         page->audio.port[RIGHT_PORT].channels =
2544                                 LEFT_CHANNEL | RIGHT_CHANNEL;
2545                         page->audio.port[2].channels = 0;
2546                         page->audio.port[3].channels = 0;
2547                         error = cdsetmode(periph, &params);
2548                         free(params.mode_buf, M_TEMP);
2549                 }
2550                 break;
2551         case CDIOCSETSTEREO:
2552                 {
2553                         struct cd_mode_params params;
2554                         union cd_pages *page;
2555
2556                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2557                                   ("trying to do CDIOCSETSTEREO\n"));
2558
2559                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2560                         params.mode_buf = malloc(params.alloc_len, M_TEMP,
2561                                                  M_WAITOK | M_ZERO);
2562                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2563                         if (error) {
2564                                 free(params.mode_buf, M_TEMP);
2565                                 break;
2566                         }
2567                         page = cdgetpage(&params);
2568
2569                         page->audio.port[LEFT_PORT].channels =
2570                                 LEFT_CHANNEL;
2571                         page->audio.port[RIGHT_PORT].channels =
2572                                 RIGHT_CHANNEL;
2573                         page->audio.port[2].channels = 0;
2574                         page->audio.port[3].channels = 0;
2575                         error = cdsetmode(periph, &params);
2576                         free(params.mode_buf, M_TEMP);
2577                 }
2578                 break;
2579         case CDIOCSETMUTE:
2580                 {
2581                         struct cd_mode_params params;
2582                         union cd_pages *page;
2583
2584                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2585                                   ("trying to do CDIOCSETMUTE\n"));
2586
2587                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2588                         params.mode_buf = malloc(params.alloc_len, M_TEMP,
2589                                                  M_WAITOK | M_ZERO);
2590                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2591                         if (error) {
2592                                 free(&params, M_TEMP);
2593                                 break;
2594                         }
2595                         page = cdgetpage(&params);
2596
2597                         page->audio.port[LEFT_PORT].channels = 0;
2598                         page->audio.port[RIGHT_PORT].channels = 0;
2599                         page->audio.port[2].channels = 0;
2600                         page->audio.port[3].channels = 0;
2601                         error = cdsetmode(periph, &params);
2602                         free(params.mode_buf, M_TEMP);
2603                 }
2604                 break;
2605         case CDIOCSETLEFT:
2606                 {
2607                         struct cd_mode_params params;
2608                         union cd_pages *page;
2609
2610                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2611                                   ("trying to do CDIOCSETLEFT\n"));
2612
2613                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2614                         params.mode_buf = malloc(params.alloc_len, M_TEMP,
2615                                                  M_WAITOK | M_ZERO);
2616
2617                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2618                         if (error) {
2619                                 free(params.mode_buf, M_TEMP);
2620                                 break;
2621                         }
2622                         page = cdgetpage(&params);
2623
2624                         page->audio.port[LEFT_PORT].channels = LEFT_CHANNEL;
2625                         page->audio.port[RIGHT_PORT].channels = LEFT_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_TEMP);
2630                 }
2631                 break;
2632         case CDIOCSETRIGHT:
2633                 {
2634                         struct cd_mode_params params;
2635                         union cd_pages *page;
2636
2637                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2638                                   ("trying to do CDIOCSETRIGHT\n"));
2639
2640                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2641                         params.mode_buf = malloc(params.alloc_len, M_TEMP,
2642                                                  M_WAITOK | M_ZERO);
2643
2644                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2645                         if (error) {
2646                                 free(params.mode_buf, M_TEMP);
2647                                 break;
2648                         }
2649                         page = cdgetpage(&params);
2650
2651                         page->audio.port[LEFT_PORT].channels = RIGHT_CHANNEL;
2652                         page->audio.port[RIGHT_PORT].channels = RIGHT_CHANNEL;
2653                         page->audio.port[2].channels = 0;
2654                         page->audio.port[3].channels = 0;
2655                         error = cdsetmode(periph, &params);
2656                         free(params.mode_buf, M_TEMP);
2657                 }
2658                 break;
2659         case CDIOCRESUME:
2660                 error = cdpause(periph, 1);
2661                 break;
2662         case CDIOCPAUSE:
2663                 error = cdpause(periph, 0);
2664                 break;
2665         case CDIOCSTART:
2666                 error = cdstartunit(periph, 0);
2667                 break;
2668         case CDIOCCLOSE:
2669                 error = cdstartunit(periph, 1);
2670
2671 #ifdef notyet
2672                 if (error != 0)
2673                         break;
2674
2675                 /*
2676                  * The user successfully closed the tray, run
2677                  * cdcheckmedia() again so we can re-sync the disklabel
2678                  * information.
2679                  */
2680                 cdcheckmedia(periph);
2681 #endif /* notyet */
2682                 break;
2683         case CDIOCSTOP:
2684                 error = cdstopunit(periph, 0);
2685                 break;
2686         case CDIOCEJECT:
2687                 error = cdstopunit(periph, 1);
2688
2689 #ifdef notyet
2690                 if (error != 0)
2691                         break;
2692
2693                 /*
2694                  * Since we've successfully ejected the media, run
2695                  * cdcheckmedia() again so we re-sync the disklabel
2696                  * information.
2697                  */
2698                 cdcheckmedia(periph);
2699 #endif /* notyet */
2700                 break;
2701         case CDIOCALLOW:
2702                 cdprevent(periph, PR_ALLOW);
2703                 break;
2704         case CDIOCPREVENT:
2705                 cdprevent(periph, PR_PREVENT);
2706                 break;
2707         case CDIOCSETDEBUG:
2708                 /* sc_link->flags |= (SDEV_DB1 | SDEV_DB2); */
2709                 error = ENOTTY;
2710                 break;
2711         case CDIOCCLRDEBUG:
2712                 /* sc_link->flags &= ~(SDEV_DB1 | SDEV_DB2); */
2713                 error = ENOTTY;
2714                 break;
2715         case CDIOCRESET:
2716                 /* return (cd_reset(periph)); */
2717                 error = ENOTTY;
2718                 break;
2719         case CDRIOCREADSPEED:
2720                 error = cdsetspeed(periph, *(u_int32_t *)addr, CDR_MAX_SPEED);
2721                 break;
2722         case CDRIOCWRITESPEED:
2723                 error = cdsetspeed(periph, CDR_MAX_SPEED, *(u_int32_t *)addr);
2724                 break;
2725         case DVDIOCSENDKEY:
2726         case DVDIOCREPORTKEY: {
2727                 struct dvd_authinfo *authinfo;
2728
2729                 authinfo = (struct dvd_authinfo *)addr;
2730
2731                 if (cmd == DVDIOCREPORTKEY)
2732                         error = cdreportkey(periph, authinfo);
2733                 else
2734                         error = cdsendkey(periph, authinfo);
2735                 break;
2736         }
2737         case DVDIOCREADSTRUCTURE: {
2738                 struct dvd_struct *dvdstruct;
2739
2740                 dvdstruct = (struct dvd_struct *)addr;
2741
2742                 error = cdreaddvdstructure(periph, dvdstruct);
2743
2744                 break;
2745         }
2746         default:
2747                 error = cam_periph_ioctl(periph, cmd, addr, cderror);
2748                 break;
2749         }
2750
2751         cam_periph_unlock(periph);
2752
2753         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("leaving cdioctl\n"));
2754
2755         return (error);
2756 }
2757
2758 static void
2759 cdprevent(struct cam_periph *periph, int action)
2760 {
2761         union   ccb *ccb;
2762         struct  cd_softc *softc;
2763         int     error;
2764
2765         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("entering cdprevent\n"));
2766
2767         softc = (struct cd_softc *)periph->softc;
2768
2769         if (((action == PR_ALLOW)
2770           && (softc->flags & CD_FLAG_DISC_LOCKED) == 0)
2771          || ((action == PR_PREVENT)
2772           && (softc->flags & CD_FLAG_DISC_LOCKED) != 0)) {
2773                 return;
2774         }
2775
2776         ccb = cdgetccb(periph, /* priority */ 1);
2777
2778         scsi_prevent(&ccb->csio,
2779                      /*retries*/ 1,
2780                      cddone,
2781                      MSG_SIMPLE_Q_TAG,
2782                      action,
2783                      SSD_FULL_SIZE,
2784                      /* timeout */60000);
2785
2786         error = cdrunccb(ccb, cderror, /*cam_flags*/0,
2787                         /*sense_flags*/SF_RETRY_UA|SF_NO_PRINT|SF_RETRY_SELTO);
2788
2789         xpt_release_ccb(ccb);
2790
2791         if (error == 0) {
2792                 if (action == PR_ALLOW)
2793                         softc->flags &= ~CD_FLAG_DISC_LOCKED;
2794                 else
2795                         softc->flags |= CD_FLAG_DISC_LOCKED;
2796         }
2797 }
2798
2799 int
2800 cdcheckmedia(struct cam_periph *periph)
2801 {
2802         struct cd_softc *softc;
2803         struct ioc_toc_header *toch;
2804         struct cd_toc_single leadout;
2805         struct ccb_getdev cgd;
2806         u_int32_t size, toclen;
2807         int error, num_entries, cdindex;
2808         int first_track_audio;
2809         struct disklabel *label;
2810
2811         softc = (struct cd_softc *)periph->softc;
2812
2813         first_track_audio = -1;
2814         error = 0;
2815
2816         cdprevent(periph, PR_PREVENT);
2817
2818         /*
2819          * Build prototype label for whole disk.
2820          * Should take information about different data tracks from the
2821          * TOC and put it in the partition table.
2822          */
2823         label = &softc->disk.d_label;
2824         bzero(label, sizeof(*label));
2825         label->d_type = DTYPE_SCSI;
2826
2827         /*
2828          * Grab the inquiry data to get the vendor and product names.
2829          * Put them in the typename and packname for the label.
2830          */
2831         xpt_setup_ccb(&cgd.ccb_h, periph->path, /*priority*/ 1);
2832         cgd.ccb_h.func_code = XPT_GDEV_TYPE;
2833         xpt_action((union ccb *)&cgd);
2834
2835         strncpy(label->d_typename, cgd.inq_data.vendor,
2836                 min(SID_VENDOR_SIZE, sizeof(label->d_typename)));
2837         strncpy(label->d_packname, cgd.inq_data.product,
2838                 min(SID_PRODUCT_SIZE, sizeof(label->d_packname)));
2839
2840         label->d_flags = D_REMOVABLE;
2841         /*
2842          * Make partition 'a' cover the whole disk.  This is a temporary
2843          * compatibility hack.  The 'a' partition should not exist, so
2844          * the slice code won't create it.  The slice code will make
2845          * partition (RAW_PART + 'a') cover the whole disk and fill in
2846          * some more defaults.
2847          */
2848         label->d_partitions[0].p_size = label->d_secperunit;
2849         label->d_partitions[0].p_fstype = FS_OTHER;
2850
2851         /*
2852          * Default to not reading the disklabel off the disk, until we can
2853          * verify that we have media, that we have a table of contents, and
2854          * that the first track is a data track (which could theoretically
2855          * contain a disklabel).
2856          */
2857         softc->disk.d_dsflags &= ~DSO_COMPATLABEL;
2858         softc->disk.d_dsflags |= DSO_NOLABELS;
2859
2860         /*
2861          * Clear the valid media and TOC flags until we've verified that we
2862          * have both.
2863          */
2864         softc->flags &= ~(CD_FLAG_VALID_MEDIA|CD_FLAG_VALID_TOC);
2865
2866         /*
2867          * Get the disc size and block size.  If we can't get it, we don't
2868          * have media, most likely.
2869          */
2870         if ((error = cdsize(periph, &size)) != 0) {
2871                 /*
2872                  * Set a bogus sector size, so the slice code won't try to
2873                  * divide by 0 and panic the kernel.
2874                  */
2875                 label->d_secsize = 2048;
2876
2877                 label->d_secperunit = 0;
2878
2879                 /*
2880                  * XXX KDM is this a good idea?  Seems to cause more
2881                  * problems.
2882                  */
2883                 if (softc->flags & CD_FLAG_OPEN) {
2884                         int force;
2885
2886                         force = 1;
2887
2888                         /*
2889                          * We don't bother checking the return value here,
2890                          * since we already have an error...
2891                          */
2892                         dsioctl(softc->disk.d_dev, DIOCSYNCSLICEINFO,
2893                                 /*data*/(caddr_t)&force, /*flags*/ 0,
2894                                 &softc->disk.d_slice);
2895                 }
2896
2897                 /*
2898                  * Tell devstat(9) we don't have a blocksize.
2899                  */
2900                 softc->device_stats.flags |= DEVSTAT_BS_UNAVAILABLE;
2901
2902                 cdprevent(periph, PR_ALLOW);
2903
2904                 return (error);
2905         } else {
2906
2907                 label->d_secsize = softc->params.blksize;
2908                 label->d_secperunit = softc->params.disksize;
2909
2910                 /*
2911                  * Force a re-sync of slice information, like the blocksize,
2912                  * now that we know it.  It isn't pretty...but according to
2913                  * Bruce Evans, this is probably the best way to do it in
2914                  * -stable.  We only do this if we're already open, and
2915                  * therefore dsopen() has already run.  If CD_FLAG_OPEN
2916                  * isn't set, this isn't necessary.
2917                  */
2918                 if (softc->flags & CD_FLAG_OPEN) {
2919                         int force;
2920
2921                         force = 1;
2922
2923                         error = dsioctl(softc->disk.d_dev, DIOCSYNCSLICEINFO,
2924                                         /*data*/(caddr_t)&force, /*flags*/ 0,
2925                                         &softc->disk.d_slice);
2926                         if (error != 0) {
2927                                 /*
2928                                  * Set a bogus sector size, so the slice code
2929                                  * won't try to divide by 0 and panic the
2930                                  * kernel.
2931                                  */
2932                                 label->d_secsize = 2048;
2933
2934                                 label->d_secperunit = 0;
2935
2936                                 /*
2937                                  * Tell devstat(9) we don't have a blocksize.
2938                                  */
2939                                 softc->device_stats.flags |=
2940                                         DEVSTAT_BS_UNAVAILABLE;
2941
2942                                 cdprevent(periph, PR_ALLOW);
2943                         }
2944                 }
2945
2946                 /*
2947                  * We unconditionally (re)set the blocksize each time the
2948                  * CD device is opened.  This is because the CD can change,
2949                  * and therefore the blocksize might change.
2950                  * XXX problems here if some slice or partition is still
2951                  * open with the old size?
2952                  */
2953                 if ((softc->device_stats.flags & DEVSTAT_BS_UNAVAILABLE) != 0)
2954                         softc->device_stats.flags &= ~DEVSTAT_BS_UNAVAILABLE;
2955                 softc->device_stats.block_size = softc->params.blksize;
2956
2957                 softc->flags |= CD_FLAG_VALID_MEDIA;
2958         }
2959
2960         /*
2961          * Now we check the table of contents.  This (currently) is only
2962          * used for the CDIOCPLAYTRACKS ioctl.  It may be used later to do
2963          * things like present a separate entry in /dev for each track,
2964          * like that acd(4) driver does.
2965          */
2966         bzero(&softc->toc, sizeof(softc->toc));
2967         toch = &softc->toc.header;
2968
2969         /*
2970          * We will get errors here for media that doesn't have a table of
2971          * contents.  According to the MMC-3 spec: "When a Read TOC/PMA/ATIP
2972          * command is presented for a DDCD/CD-R/RW media, where the first TOC
2973          * has not been recorded (no complete session) and the Format codes
2974          * 0000b, 0001b, or 0010b are specified, this command shall be rejected
2975          * with an INVALID FIELD IN CDB.  Devices that are not capable of
2976          * reading an incomplete session on DDC/CD-R/RW media shall report
2977          * CANNOT READ MEDIUM - INCOMPATIBLE FORMAT."
2978          *
2979          * So this isn't fatal if we can't read the table of contents, it
2980          * just means that the user won't be able to issue the play tracks
2981          * ioctl, and likely lots of other stuff won't work either.  They
2982          * need to burn the CD before we can do a whole lot with it.  So
2983          * we don't print anything here if we get an error back.
2984          */
2985         error = cdreadtoc(periph, 0, 0, (u_int8_t *)toch, sizeof(*toch),
2986                           SF_NO_PRINT);
2987         /*
2988          * Errors in reading the table of contents aren't fatal, we just
2989          * won't have a valid table of contents cached.
2990          */
2991         if (error != 0) {
2992                 error = 0;
2993                 bzero(&softc->toc, sizeof(softc->toc));
2994                 goto bailout;
2995         }
2996
2997         if (softc->quirks & CD_Q_BCD_TRACKS) {
2998                 toch->starting_track = bcd2bin(toch->starting_track);
2999                 toch->ending_track = bcd2bin(toch->ending_track);
3000         }
3001
3002         /* Number of TOC entries, plus leadout */
3003         num_entries = (toch->ending_track - toch->starting_track) + 2;
3004
3005         if (num_entries <= 0)
3006                 goto bailout;
3007
3008         toclen = num_entries * sizeof(struct cd_toc_entry);
3009
3010         error = cdreadtoc(periph, CD_MSF_FORMAT, toch->starting_track,
3011                           (u_int8_t *)&softc->toc, toclen + sizeof(*toch),
3012                           SF_NO_PRINT);
3013         if (error != 0) {
3014                 error = 0;
3015                 bzero(&softc->toc, sizeof(softc->toc));
3016                 goto bailout;
3017         }
3018
3019         if (softc->quirks & CD_Q_BCD_TRACKS) {
3020                 toch->starting_track = bcd2bin(toch->starting_track);
3021                 toch->ending_track = bcd2bin(toch->ending_track);
3022         }
3023         toch->len = scsi_2btoul((uint8_t *)&toch->len);
3024
3025         /*
3026          * XXX KDM is this necessary?  Probably only if the drive doesn't
3027          * return leadout information with the table of contents.
3028          */
3029         cdindex = toch->starting_track + num_entries -1;
3030         if (cdindex == toch->ending_track + 1) {
3031
3032                 error = cdreadtoc(periph, CD_MSF_FORMAT, LEADOUT,
3033                                   (u_int8_t *)&leadout, sizeof(leadout),
3034                                   SF_NO_PRINT);
3035                 if (error != 0) {
3036                         error = 0;
3037                         goto bailout;
3038                 }
3039                 softc->toc.entries[cdindex - toch->starting_track] =
3040                         leadout.entry;
3041         }
3042         if (softc->quirks & CD_Q_BCD_TRACKS) {
3043                 for (cdindex = 0; cdindex < (num_entries - 1); cdindex++) {
3044                         softc->toc.entries[cdindex].track =
3045                                 bcd2bin(softc->toc.entries[cdindex].track);
3046                 }
3047         }
3048
3049         /*
3050          * Run through the TOC entries, find the first entry and determine
3051          * whether it is an audio or data track.
3052          */
3053         for (cdindex = 0; cdindex < (num_entries - 1); cdindex++) {
3054                 if (softc->toc.entries[cdindex].track == toch->starting_track) {
3055                         if (softc->toc.entries[cdindex].control & 0x04)
3056                                 first_track_audio = 0;
3057                         else
3058                                 first_track_audio = 1;
3059                         break;
3060                 }
3061         }
3062
3063         /*
3064          * If first_track_audio is non-zero, we either have an error (e.g.
3065          * couldn't find the starting track) or the first track is an audio
3066          * track.  If first_track_audio is 0, the first track is a data
3067          * track that could have a disklabel.  Attempt to read the
3068          * disklabel off the media, just in case the user put one there.
3069          */
3070         if (first_track_audio == 0) {
3071                 softc->disk.d_dsflags |= DSO_COMPATLABEL;
3072                 softc->disk.d_dsflags &= ~DSO_NOLABELS;
3073         }
3074         softc->flags |= CD_FLAG_VALID_TOC;
3075
3076 bailout:
3077         return (error);
3078 }
3079
3080 static int
3081 cdsize(struct cam_periph *periph, u_int32_t *size)
3082 {
3083         struct cd_softc *softc;
3084         union ccb *ccb;
3085         struct scsi_read_capacity_data *rcap_buf;
3086         int error;
3087
3088         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("entering cdsize\n"));
3089
3090         softc = (struct cd_softc *)periph->softc;
3091
3092         ccb = cdgetccb(periph, /* priority */ 1);
3093
3094         rcap_buf = malloc(sizeof(struct scsi_read_capacity_data),
3095                           M_TEMP, M_WAITOK);
3096
3097         scsi_read_capacity(&ccb->csio,
3098                            /*retries*/ 1,
3099                            cddone,
3100                            MSG_SIMPLE_Q_TAG,
3101                            rcap_buf,
3102                            SSD_FULL_SIZE,
3103                            /* timeout */20000);
3104
3105         error = cdrunccb(ccb, cderror, /*cam_flags*/0,
3106                          /*sense_flags*/SF_RETRY_UA|SF_NO_PRINT|SF_RETRY_SELTO);
3107
3108         xpt_release_ccb(ccb);
3109
3110         softc->params.disksize = scsi_4btoul(rcap_buf->addr) + 1;
3111         softc->params.blksize  = scsi_4btoul(rcap_buf->length);
3112         /*
3113          * SCSI-3 mandates that the reported blocksize shall be 2048.
3114          * Older drives sometimes report funny values, trim it down to
3115          * 2048, or other parts of the kernel will get confused.
3116          *
3117          * XXX we leave drives alone that might report 512 bytes, as
3118          * well as drives reporting more weird sizes like perhaps 4K.
3119          */
3120         if (softc->params.blksize > 2048 && softc->params.blksize <= 2352)
3121                 softc->params.blksize = 2048;
3122
3123         free(rcap_buf, M_TEMP);
3124         *size = softc->params.disksize;
3125
3126         return (error);
3127
3128 }
3129
3130 static int
3131 cd6byteworkaround(union ccb *ccb)
3132 {
3133         u_int8_t *cdb;
3134         struct cam_periph *periph;
3135         struct cd_softc *softc;
3136         struct cd_mode_params *params;
3137         int frozen, found;
3138
3139         periph = xpt_path_periph(ccb->ccb_h.path);
3140         softc = (struct cd_softc *)periph->softc;
3141
3142         cdb = ccb->csio.cdb_io.cdb_bytes;
3143
3144         if ((ccb->ccb_h.flags & CAM_CDB_POINTER)
3145          || ((cdb[0] != MODE_SENSE_6)
3146           && (cdb[0] != MODE_SELECT_6)))
3147                 return (0);
3148
3149         /*
3150          * Because there is no convenient place to stash the overall
3151          * cd_mode_params structure pointer, we have to grab it like this.
3152          * This means that ALL MODE_SENSE and MODE_SELECT requests in the
3153          * cd(4) driver MUST go through cdgetmode() and cdsetmode()!
3154          *
3155          * XXX It would be nice if, at some point, we could increase the
3156          * number of available peripheral private pointers.  Both pointers
3157          * are currently used in most every peripheral driver.
3158          */
3159         found = 0;
3160
3161         STAILQ_FOREACH(params, &softc->mode_queue, links) {
3162                 if (params->mode_buf == ccb->csio.data_ptr) {
3163                         found = 1;
3164                         break;
3165                 }
3166         }
3167
3168         /*
3169          * This shouldn't happen.  All mode sense and mode select
3170          * operations in the cd(4) driver MUST go through cdgetmode() and
3171          * cdsetmode()!
3172          */
3173         if (found == 0) {
3174                 xpt_print_path(periph->path);
3175                 printf("mode buffer not found in mode queue!\n");
3176                 return (0);
3177         }
3178
3179         params->cdb_size = 10;
3180         softc->minimum_command_size = 10;
3181         xpt_print_path(ccb->ccb_h.path);
3182         printf("%s(6) failed, increasing minimum CDB size to 10 bytes\n",
3183                (cdb[0] == MODE_SENSE_6) ? "MODE_SENSE" : "MODE_SELECT");
3184
3185         if (cdb[0] == MODE_SENSE_6) {
3186                 struct scsi_mode_sense_10 ms10;
3187                 struct scsi_mode_sense_6 *ms6;
3188                 int len;
3189
3190                 ms6 = (struct scsi_mode_sense_6 *)cdb;
3191
3192                 bzero(&ms10, sizeof(ms10));
3193                 ms10.opcode = MODE_SENSE_10;
3194                 ms10.byte2 = ms6->byte2;
3195                 ms10.page = ms6->page;
3196
3197                 /*
3198                  * 10 byte mode header, block descriptor,
3199                  * sizeof(union cd_pages)
3200                  */
3201                 len = sizeof(struct cd_mode_data_10);
3202                 ccb->csio.dxfer_len = len;
3203
3204                 scsi_ulto2b(len, ms10.length);
3205                 ms10.control = ms6->control;
3206                 bcopy(&ms10, cdb, 10);
3207                 ccb->csio.cdb_len = 10;
3208         } else {
3209                 struct scsi_mode_select_10 ms10;
3210                 struct scsi_mode_select_6 *ms6;
3211                 struct scsi_mode_header_6 *header6;
3212                 struct scsi_mode_header_10 *header10;
3213                 struct scsi_mode_page_header *page_header;
3214                 int blk_desc_len, page_num, page_size, len;
3215
3216                 ms6 = (struct scsi_mode_select_6 *)cdb;
3217
3218                 bzero(&ms10, sizeof(ms10));
3219                 ms10.opcode = MODE_SELECT_10;
3220                 ms10.byte2 = ms6->byte2;
3221
3222                 header6 = (struct scsi_mode_header_6 *)params->mode_buf;
3223                 header10 = (struct scsi_mode_header_10 *)params->mode_buf;
3224
3225                 page_header = find_mode_page_6(header6);
3226                 page_num = page_header->page_code;
3227
3228                 blk_desc_len = header6->blk_desc_len;
3229
3230                 page_size = cdgetpagesize(page_num);
3231
3232                 if (page_size != (page_header->page_length +
3233                     sizeof(*page_header)))
3234                         page_size = page_header->page_length +
3235                                 sizeof(*page_header);
3236
3237                 len = sizeof(*header10) + blk_desc_len + page_size;
3238
3239                 len = min(params->alloc_len, len);
3240
3241                 /*
3242                  * Since the 6 byte parameter header is shorter than the 10
3243                  * byte parameter header, we need to copy the actual mode
3244                  * page data, and the block descriptor, if any, so things wind
3245                  * up in the right place.  The regions will overlap, but
3246                  * bcopy() does the right thing.
3247                  */
3248                 bcopy(params->mode_buf + sizeof(*header6),
3249                       params->mode_buf + sizeof(*header10),
3250                       len - sizeof(*header10));
3251
3252                 /* Make sure these fields are set correctly. */
3253                 scsi_ulto2b(0, header10->data_length);
3254                 header10->medium_type = 0;
3255                 scsi_ulto2b(blk_desc_len, header10->blk_desc_len);
3256
3257                 ccb->csio.dxfer_len = len;
3258
3259                 scsi_ulto2b(len, ms10.length);
3260                 ms10.control = ms6->control;
3261                 bcopy(&ms10, cdb, 10);
3262                 ccb->csio.cdb_len = 10;
3263         }
3264
3265         frozen = (ccb->ccb_h.status & CAM_DEV_QFRZN) != 0;
3266         ccb->ccb_h.status = CAM_REQUEUE_REQ;
3267         xpt_action(ccb);
3268         if (frozen) {
3269                 cam_release_devq(ccb->ccb_h.path,
3270                                  /*relsim_flags*/0,
3271                                  /*openings*/0,
3272                                  /*timeout*/0,
3273                                  /*getcount_only*/0);
3274         }
3275
3276         return (ERESTART);
3277 }
3278
3279 static int
3280 cderror(union ccb *ccb, u_int32_t cam_flags, u_int32_t sense_flags)
3281 {
3282         struct cd_softc *softc;
3283         struct cam_periph *periph;
3284         int error;
3285
3286         periph = xpt_path_periph(ccb->ccb_h.path);
3287         softc = (struct cd_softc *)periph->softc;
3288
3289         error = 0;
3290
3291         /*
3292          * We use a status of CAM_REQ_INVALID as shorthand -- if a 6 byte
3293          * CDB comes back with this particular error, try transforming it
3294          * into the 10 byte version.
3295          */
3296         if ((ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_INVALID) {
3297                 error = cd6byteworkaround(ccb);
3298         } else if (((ccb->ccb_h.status & CAM_STATUS_MASK) ==
3299                      CAM_SCSI_STATUS_ERROR)
3300          && (ccb->ccb_h.status & CAM_AUTOSNS_VALID)
3301          && (ccb->csio.scsi_status == SCSI_STATUS_CHECK_COND)
3302          && ((ccb->ccb_h.flags & CAM_SENSE_PHYS) == 0)
3303          && ((ccb->ccb_h.flags & CAM_SENSE_PTR) == 0)) {
3304                 int sense_key, error_code, asc, ascq;
3305
3306                 scsi_extract_sense(&ccb->csio.sense_data,
3307                                    &error_code, &sense_key, &asc, &ascq);
3308                 if (sense_key == SSD_KEY_ILLEGAL_REQUEST)
3309                         error = cd6byteworkaround(ccb);
3310         }
3311
3312         if (error == ERESTART)
3313                 return (error);
3314
3315         /*
3316          * XXX
3317          * Until we have a better way of doing pack validation,
3318          * don't treat UAs as errors.
3319          */
3320         sense_flags |= SF_RETRY_UA;
3321         return (cam_periph_error(ccb, cam_flags, sense_flags,
3322                                  &softc->saved_ccb));
3323 }
3324
3325 /*
3326  * Read table of contents
3327  */
3328 static int
3329 cdreadtoc(struct cam_periph *periph, u_int32_t mode, u_int32_t start,
3330           u_int8_t *data, u_int32_t len, u_int32_t sense_flags)
3331 {
3332         struct scsi_read_toc *scsi_cmd;
3333         u_int32_t ntoc;
3334         struct ccb_scsiio *csio;
3335         union ccb *ccb;
3336         int error;
3337
3338         ntoc = len;
3339         error = 0;
3340
3341         ccb = cdgetccb(periph, /* priority */ 1);
3342
3343         csio = &ccb->csio;
3344
3345         cam_fill_csio(csio,
3346                       /* retries */ 1,
3347                       /* cbfcnp */ cddone,
3348                       /* flags */ CAM_DIR_IN,
3349                       /* tag_action */ MSG_SIMPLE_Q_TAG,
3350                       /* data_ptr */ data,
3351                       /* dxfer_len */ len,
3352                       /* sense_len */ SSD_FULL_SIZE,
3353                       sizeof(struct scsi_read_toc),
3354                       /* timeout */ 50000);
3355
3356         scsi_cmd = (struct scsi_read_toc *)&csio->cdb_io.cdb_bytes;
3357         bzero (scsi_cmd, sizeof(*scsi_cmd));
3358
3359         if (mode == CD_MSF_FORMAT)
3360                 scsi_cmd->byte2 |= CD_MSF;
3361         scsi_cmd->from_track = start;
3362         /* scsi_ulto2b(ntoc, (u_int8_t *)scsi_cmd->data_len); */
3363         scsi_cmd->data_len[0] = (ntoc) >> 8;
3364         scsi_cmd->data_len[1] = (ntoc) & 0xff;
3365
3366         scsi_cmd->op_code = READ_TOC;
3367
3368         error = cdrunccb(ccb, cderror, /*cam_flags*/0,
3369                          /*sense_flags*/SF_RETRY_UA | SF_RETRY_SELTO |
3370                          sense_flags);
3371
3372         xpt_release_ccb(ccb);
3373
3374         return(error);
3375 }
3376
3377 static int
3378 cdreadsubchannel(struct cam_periph *periph, u_int32_t mode,
3379                  u_int32_t format, int track,
3380                  struct cd_sub_channel_info *data, u_int32_t len)
3381 {
3382         struct scsi_read_subchannel *scsi_cmd;
3383         struct ccb_scsiio *csio;
3384         union ccb *ccb;
3385         int error;
3386
3387         error = 0;
3388
3389         ccb = cdgetccb(periph, /* priority */ 1);
3390
3391         csio = &ccb->csio;
3392
3393         cam_fill_csio(csio,
3394                       /* retries */ 1,
3395                       /* cbfcnp */ cddone,
3396                       /* flags */ CAM_DIR_IN,
3397                       /* tag_action */ MSG_SIMPLE_Q_TAG,
3398                       /* data_ptr */ (u_int8_t *)data,
3399                       /* dxfer_len */ len,
3400                       /* sense_len */ SSD_FULL_SIZE,
3401                       sizeof(struct scsi_read_subchannel),
3402                       /* timeout */ 50000);
3403
3404         scsi_cmd = (struct scsi_read_subchannel *)&csio->cdb_io.cdb_bytes;
3405         bzero (scsi_cmd, sizeof(*scsi_cmd));
3406
3407         scsi_cmd->op_code = READ_SUBCHANNEL;
3408         if (mode == CD_MSF_FORMAT)
3409                 scsi_cmd->byte1 |= CD_MSF;
3410         scsi_cmd->byte2 = SRS_SUBQ;
3411         scsi_cmd->subchan_format = format;
3412         scsi_cmd->track = track;
3413         scsi_ulto2b(len, (u_int8_t *)scsi_cmd->data_len);
3414         scsi_cmd->control = 0;
3415
3416         error = cdrunccb(ccb, cderror, /*cam_flags*/0,
3417                          /*sense_flags*/SF_RETRY_UA|SF_RETRY_SELTO);
3418
3419         xpt_release_ccb(ccb);
3420
3421         return(error);
3422 }
3423
3424 /*
3425  * All MODE_SENSE requests in the cd(4) driver MUST go through this
3426  * routine.  See comments in cd6byteworkaround() for details.
3427  */
3428 static int
3429 cdgetmode(struct cam_periph *periph, struct cd_mode_params *data,
3430           u_int32_t page)
3431 {
3432         struct ccb_scsiio *csio;
3433         struct cd_softc *softc;
3434         union ccb *ccb;
3435         int param_len;
3436         int error;
3437
3438         softc = (struct cd_softc *)periph->softc;
3439
3440         ccb = cdgetccb(periph, /* priority */ 1);
3441
3442         csio = &ccb->csio;
3443
3444         data->cdb_size = softc->minimum_command_size;
3445         if (data->cdb_size < 10)
3446                 param_len = sizeof(struct cd_mode_data);
3447         else
3448                 param_len = sizeof(struct cd_mode_data_10);
3449
3450         /* Don't say we've got more room than we actually allocated */
3451         param_len = min(param_len, data->alloc_len);
3452
3453         scsi_mode_sense_len(csio,
3454                             /* retries */ 1,
3455                             /* cbfcnp */ cddone,
3456                             /* tag_action */ MSG_SIMPLE_Q_TAG,
3457                             /* dbd */ 0,
3458                             /* page_code */ SMS_PAGE_CTRL_CURRENT,
3459                             /* page */ page,
3460                             /* param_buf */ data->mode_buf,
3461                             /* param_len */ param_len,
3462                             /* minimum_cmd_size */ softc->minimum_command_size,
3463                             /* sense_len */ SSD_FULL_SIZE,
3464                             /* timeout */ 50000);
3465
3466         /*
3467          * It would be nice not to have to do this, but there's no
3468          * available pointer in the CCB that would allow us to stuff the
3469          * mode params structure in there and retrieve it in
3470          * cd6byteworkaround(), so we can set the cdb size.  The cdb size
3471          * lets the caller know what CDB size we ended up using, so they
3472          * can find the actual mode page offset.
3473          */
3474         STAILQ_INSERT_TAIL(&softc->mode_queue, data, links);
3475
3476         error = cdrunccb(ccb, cderror, /*cam_flags*/0,
3477                          /*sense_flags*/SF_RETRY_UA|SF_RETRY_SELTO);
3478
3479         xpt_release_ccb(ccb);
3480
3481         STAILQ_REMOVE(&softc->mode_queue, data, cd_mode_params, links);
3482
3483         /*
3484          * This is a bit of belt-and-suspenders checking, but if we run
3485          * into a situation where the target sends back multiple block
3486          * descriptors, we might not have enough space in the buffer to
3487          * see the whole mode page.  Better to return an error than
3488          * potentially access memory beyond our malloced region.
3489          */
3490         if (error == 0) {
3491                 u_int32_t data_len;
3492
3493                 if (data->cdb_size == 10) {
3494                         struct scsi_mode_header_10 *hdr10;
3495
3496                         hdr10 = (struct scsi_mode_header_10 *)data->mode_buf;
3497                         data_len = scsi_2btoul(hdr10->data_length);
3498                         data_len += sizeof(hdr10->data_length);
3499                 } else {
3500                         struct scsi_mode_header_6 *hdr6;
3501
3502                         hdr6 = (struct scsi_mode_header_6 *)data->mode_buf;
3503                         data_len = hdr6->data_length;
3504                         data_len += sizeof(hdr6->data_length);
3505                 }
3506
3507                 /*
3508                  * Complain if there is more mode data available than we
3509                  * allocated space for.  This could potentially happen if
3510                  * we miscalculated the page length for some reason, if the
3511                  * drive returns multiple block descriptors, or if it sets
3512                  * the data length incorrectly.
3513                  */
3514                 if (data_len > data->alloc_len) {
3515                         xpt_print_path(periph->path);
3516                         printf("allocated modepage %d length %d < returned "
3517                                "length %d\n", page, data->alloc_len, data_len);
3518
3519                         error = ENOSPC;
3520                 }
3521         }
3522         return (error);
3523 }
3524
3525 /*
3526  * All MODE_SELECT requests in the cd(4) driver MUST go through this
3527  * routine.  See comments in cd6byteworkaround() for details.
3528  */
3529 static int
3530 cdsetmode(struct cam_periph *periph, struct cd_mode_params *data)
3531 {
3532         struct ccb_scsiio *csio;
3533         struct cd_softc *softc;
3534         union ccb *ccb;
3535         int cdb_size, param_len;
3536         int error;
3537
3538         softc = (struct cd_softc *)periph->softc;
3539
3540         ccb = cdgetccb(periph, /* priority */ 1);
3541
3542         csio = &ccb->csio;
3543
3544         error = 0;
3545
3546         /*
3547          * If the data is formatted for the 10 byte version of the mode
3548          * select parameter list, we need to use the 10 byte CDB.
3549          * Otherwise, we use whatever the stored minimum command size.
3550          */
3551         if (data->cdb_size == 10)
3552                 cdb_size = data->cdb_size;
3553         else
3554                 cdb_size = softc->minimum_command_size;
3555
3556         if (cdb_size >= 10) {
3557                 struct scsi_mode_header_10 *mode_header;
3558                 u_int32_t data_len;
3559
3560                 mode_header = (struct scsi_mode_header_10 *)data->mode_buf;
3561
3562                 data_len = scsi_2btoul(mode_header->data_length);
3563
3564                 scsi_ulto2b(0, mode_header->data_length);
3565                 /*
3566                  * SONY drives do not allow a mode select with a medium_type
3567                  * value that has just been returned by a mode sense; use a
3568                  * medium_type of 0 (Default) instead.
3569                  */
3570                 mode_header->medium_type = 0;
3571
3572                 /*
3573                  * Pass back whatever the drive passed to us, plus the size
3574                  * of the data length field.
3575                  */
3576                 param_len = data_len + sizeof(mode_header->data_length);
3577
3578         } else {
3579                 struct scsi_mode_header_6 *mode_header;
3580
3581                 mode_header = (struct scsi_mode_header_6 *)data->mode_buf;
3582
3583                 param_len = mode_header->data_length + 1;
3584
3585                 mode_header->data_length = 0;
3586                 /*
3587                  * SONY drives do not allow a mode select with a medium_type
3588                  * value that has just been returned by a mode sense; use a
3589                  * medium_type of 0 (Default) instead.
3590                  */
3591                 mode_header->medium_type = 0;
3592         }
3593
3594         /* Don't say we've got more room than we actually allocated */
3595         param_len = min(param_len, data->alloc_len);
3596
3597         scsi_mode_select_len(csio,
3598                              /* retries */ 1,
3599                              /* cbfcnp */ cddone,
3600                              /* tag_action */ MSG_SIMPLE_Q_TAG,
3601                              /* scsi_page_fmt */ 1,
3602                              /* save_pages */ 0,
3603                              /* param_buf */ data->mode_buf,
3604                              /* param_len */ param_len,
3605                              /* minimum_cmd_size */ cdb_size,
3606                              /* sense_len */ SSD_FULL_SIZE,
3607                              /* timeout */ 50000);
3608
3609         /* See comments in cdgetmode() and cd6byteworkaround(). */
3610         STAILQ_INSERT_TAIL(&softc->mode_queue, data, links);
3611
3612         error = cdrunccb(ccb, cderror, /*cam_flags*/0,
3613                          /*sense_flags*/SF_RETRY_UA | SF_RETRY_SELTO);
3614
3615         xpt_release_ccb(ccb);
3616
3617         STAILQ_REMOVE(&softc->mode_queue, data, cd_mode_params, links);
3618
3619         return (error);
3620 }
3621
3622
3623
3624 static int
3625 cdplay(struct cam_periph *periph, u_int32_t blk, u_int32_t len)
3626 {
3627         struct ccb_scsiio *csio;
3628         union ccb *ccb;
3629         int error;
3630         u_int8_t cdb_len;
3631
3632         error = 0;
3633         ccb = cdgetccb(periph, /* priority */ 1);
3634         csio = &ccb->csio;
3635         /*
3636          * Use the smallest possible command to perform the operation.
3637          */
3638         if ((len & 0xffff0000) == 0) {
3639                 /*
3640                  * We can fit in a 10 byte cdb.
3641                  */
3642                 struct scsi_play_10 *scsi_cmd;
3643
3644                 scsi_cmd = (struct scsi_play_10 *)&csio->cdb_io.cdb_bytes;
3645                 bzero (scsi_cmd, sizeof(*scsi_cmd));
3646                 scsi_cmd->op_code = PLAY_10;
3647                 scsi_ulto4b(blk, (u_int8_t *)scsi_cmd->blk_addr);
3648                 scsi_ulto2b(len, (u_int8_t *)scsi_cmd->xfer_len);
3649                 cdb_len = sizeof(*scsi_cmd);
3650         } else  {
3651                 struct scsi_play_12 *scsi_cmd;
3652
3653                 scsi_cmd = (struct scsi_play_12 *)&csio->cdb_io.cdb_bytes;
3654                 bzero (scsi_cmd, sizeof(*scsi_cmd));
3655                 scsi_cmd->op_code = PLAY_12;
3656                 scsi_ulto4b(blk, (u_int8_t *)scsi_cmd->blk_addr);
3657                 scsi_ulto4b(len, (u_int8_t *)scsi_cmd->xfer_len);
3658                 cdb_len = sizeof(*scsi_cmd);
3659         }
3660         cam_fill_csio(csio,
3661                       /*retries*/2,
3662                       cddone,
3663                       /*flags*/CAM_DIR_NONE,
3664                       MSG_SIMPLE_Q_TAG,
3665                       /*dataptr*/NULL,
3666                       /*datalen*/0,
3667                       /*sense_len*/SSD_FULL_SIZE,
3668                       cdb_len,
3669                       /*timeout*/50 * 1000);
3670
3671         error = cdrunccb(ccb, cderror, /*cam_flags*/0,
3672                          /*sense_flags*/SF_RETRY_UA | SF_RETRY_SELTO);
3673
3674         xpt_release_ccb(ccb);
3675
3676         return(error);
3677 }
3678
3679 static int
3680 cdplaymsf(struct cam_periph *periph, u_int32_t startm, u_int32_t starts,
3681           u_int32_t startf, u_int32_t endm, u_int32_t ends, u_int32_t endf)
3682 {
3683         struct scsi_play_msf *scsi_cmd;
3684         struct ccb_scsiio *csio;
3685         union ccb *ccb;
3686         int error;
3687
3688         error = 0;
3689
3690         ccb = cdgetccb(periph, /* priority */ 1);
3691
3692         csio = &ccb->csio;
3693
3694         cam_fill_csio(csio,
3695                       /* retries */ 1,
3696                       /* cbfcnp */ cddone,
3697                       /* flags */ CAM_DIR_NONE,
3698                       /* tag_action */ MSG_SIMPLE_Q_TAG,
3699                       /* data_ptr */ NULL,
3700                       /* dxfer_len */ 0,
3701                       /* sense_len */ SSD_FULL_SIZE,
3702                       sizeof(struct scsi_play_msf),
3703                       /* timeout */ 50000);
3704
3705         scsi_cmd = (struct scsi_play_msf *)&csio->cdb_io.cdb_bytes;
3706         bzero (scsi_cmd, sizeof(*scsi_cmd));
3707
3708         scsi_cmd->op_code = PLAY_MSF;
3709         scsi_cmd->start_m = startm;
3710         scsi_cmd->start_s = starts;
3711         scsi_cmd->start_f = startf;
3712         scsi_cmd->end_m = endm;
3713         scsi_cmd->end_s = ends;
3714         scsi_cmd->end_f = endf;
3715
3716         error = cdrunccb(ccb, cderror, /*cam_flags*/0,
3717                          /*sense_flags*/SF_RETRY_UA | SF_RETRY_SELTO);
3718
3719         xpt_release_ccb(ccb);
3720
3721         return(error);
3722 }
3723
3724
3725 static int
3726 cdplaytracks(struct cam_periph *periph, u_int32_t strack, u_int32_t sindex,
3727              u_int32_t etrack, u_int32_t eindex)
3728 {
3729         struct scsi_play_track *scsi_cmd;
3730         struct ccb_scsiio *csio;
3731         union ccb *ccb;
3732         int error;
3733
3734         error = 0;
3735
3736         ccb = cdgetccb(periph, /* priority */ 1);
3737
3738         csio = &ccb->csio;
3739
3740         cam_fill_csio(csio,
3741                       /* retries */ 1,
3742                       /* cbfcnp */ cddone,
3743                       /* flags */ CAM_DIR_NONE,
3744                       /* tag_action */ MSG_SIMPLE_Q_TAG,
3745                       /* data_ptr */ NULL,
3746                       /* dxfer_len */ 0,
3747                       /* sense_len */ SSD_FULL_SIZE,
3748                       sizeof(struct scsi_play_track),
3749                       /* timeout */ 50000);
3750
3751         scsi_cmd = (struct scsi_play_track *)&csio->cdb_io.cdb_bytes;
3752         bzero (scsi_cmd, sizeof(*scsi_cmd));
3753
3754         scsi_cmd->op_code = PLAY_TRACK;
3755         scsi_cmd->start_track = strack;
3756         scsi_cmd->start_index = sindex;
3757         scsi_cmd->end_track = etrack;
3758         scsi_cmd->end_index = eindex;
3759
3760         error = cdrunccb(ccb, cderror, /*cam_flags*/0,
3761                          /*sense_flags*/SF_RETRY_UA | SF_RETRY_SELTO);
3762
3763         xpt_release_ccb(ccb);
3764
3765         return(error);
3766 }
3767
3768 static int
3769 cdpause(struct cam_periph *periph, u_int32_t go)
3770 {
3771         struct scsi_pause *scsi_cmd;
3772         struct ccb_scsiio *csio;
3773         union ccb *ccb;
3774         int error;
3775
3776         error = 0;
3777
3778         ccb = cdgetccb(periph, /* priority */ 1);
3779
3780         csio = &ccb->csio;
3781
3782         cam_fill_csio(csio,
3783                       /* retries */ 1,
3784                       /* cbfcnp */ cddone,
3785                       /* flags */ CAM_DIR_NONE,
3786                       /* tag_action */ MSG_SIMPLE_Q_TAG,
3787                       /* data_ptr */ NULL,
3788                       /* dxfer_len */ 0,
3789                       /* sense_len */ SSD_FULL_SIZE,
3790                       sizeof(struct scsi_pause),
3791                       /* timeout */ 50000);
3792
3793         scsi_cmd = (struct scsi_pause *)&csio->cdb_io.cdb_bytes;
3794         bzero (scsi_cmd, sizeof(*scsi_cmd));
3795
3796         scsi_cmd->op_code = PAUSE;
3797         scsi_cmd->resume = go;
3798
3799         error = cdrunccb(ccb, cderror, /*cam_flags*/0,
3800                          /*sense_flags*/SF_RETRY_UA |SF_RETRY_SELTO);
3801
3802         xpt_release_ccb(ccb);
3803
3804         return(error);
3805 }
3806
3807 static int
3808 cdstartunit(struct cam_periph *periph, int load)
3809 {
3810         union ccb *ccb;
3811         int error;
3812
3813         error = 0;
3814
3815         ccb = cdgetccb(periph, /* priority */ 1);
3816
3817         scsi_start_stop(&ccb->csio,
3818                         /* retries */ 1,
3819                         /* cbfcnp */ cddone,
3820                         /* tag_action */ MSG_SIMPLE_Q_TAG,
3821                         /* start */ TRUE,
3822                         /* load_eject */ load,
3823                         /* immediate */ FALSE,
3824                         /* sense_len */ SSD_FULL_SIZE,
3825                         /* timeout */ 50000);
3826
3827         error = cdrunccb(ccb, cderror, /*cam_flags*/0,
3828                          /*sense_flags*/SF_RETRY_UA | SF_RETRY_SELTO);
3829
3830         xpt_release_ccb(ccb);
3831
3832         return(error);
3833 }
3834
3835 static int
3836 cdstopunit(struct cam_periph *periph, u_int32_t eject)
3837 {
3838         union ccb *ccb;
3839         int error;
3840
3841         error = 0;
3842
3843         ccb = cdgetccb(periph, /* priority */ 1);
3844
3845         scsi_start_stop(&ccb->csio,
3846                         /* retries */ 1,
3847                         /* cbfcnp */ cddone,
3848                         /* tag_action */ MSG_SIMPLE_Q_TAG,
3849                         /* start */ FALSE,
3850                         /* load_eject */ eject,
3851                         /* immediate */ FALSE,
3852                         /* sense_len */ SSD_FULL_SIZE,
3853                         /* timeout */ 50000);
3854
3855         error = cdrunccb(ccb, cderror, /*cam_flags*/0,
3856                          /*sense_flags*/SF_RETRY_UA | SF_RETRY_SELTO);
3857
3858         xpt_release_ccb(ccb);
3859
3860         return(error);
3861 }
3862
3863 static int
3864 cdsetspeed(struct cam_periph *periph, u_int32_t rdspeed, u_int32_t wrspeed)
3865 {
3866         struct scsi_set_speed *scsi_cmd;
3867         struct ccb_scsiio *csio;
3868         union ccb *ccb;
3869         int error;
3870
3871         error = 0;
3872         ccb = cdgetccb(periph, /* priority */ 1);
3873         csio = &ccb->csio;
3874
3875         /* Preserve old behavior: units in multiples of CDROM speed */
3876         if (rdspeed < 177)
3877                 rdspeed *= 177;
3878         if (wrspeed < 177)
3879                 wrspeed *= 177;
3880
3881         cam_fill_csio(csio,
3882                       /* retries */ 1,
3883                       /* cbfcnp */ cddone,
3884                       /* flags */ CAM_DIR_NONE,
3885                       /* tag_action */ MSG_SIMPLE_Q_TAG,
3886                       /* data_ptr */ NULL,
3887                       /* dxfer_len */ 0,
3888                       /* sense_len */ SSD_FULL_SIZE,
3889                       sizeof(struct scsi_set_speed),
3890                       /* timeout */ 50000);
3891
3892         scsi_cmd = (struct scsi_set_speed *)&csio->cdb_io.cdb_bytes;
3893         bzero(scsi_cmd, sizeof(*scsi_cmd));
3894
3895         scsi_cmd->opcode = SET_CD_SPEED;
3896         scsi_ulto2b(rdspeed, scsi_cmd->readspeed);
3897         scsi_ulto2b(wrspeed, scsi_cmd->writespeed);
3898
3899         error = cdrunccb(ccb, cderror, /*cam_flags*/0,
3900                          /*sense_flags*/SF_RETRY_UA | SF_RETRY_SELTO);
3901
3902         xpt_release_ccb(ccb);
3903
3904         return(error);
3905 }
3906
3907 static int
3908 cdreportkey(struct cam_periph *periph, struct dvd_authinfo *authinfo)
3909 {
3910         union ccb *ccb;
3911         u_int8_t *databuf;
3912         u_int32_t lba;
3913         int error;
3914         int length;
3915
3916         error = 0;
3917         databuf = NULL;
3918         lba = 0;
3919
3920         ccb = cdgetccb(periph, /* priority */ 1);
3921
3922         switch (authinfo->format) {
3923         case DVD_REPORT_AGID:
3924                 length = sizeof(struct scsi_report_key_data_agid);
3925                 break;
3926         case DVD_REPORT_CHALLENGE:
3927                 length = sizeof(struct scsi_report_key_data_challenge);
3928                 break;
3929         case DVD_REPORT_KEY1:
3930                 length = sizeof(struct scsi_report_key_data_key1_key2);
3931                 break;
3932         case DVD_REPORT_TITLE_KEY:
3933                 length = sizeof(struct scsi_report_key_data_title);
3934                 /* The lba field is only set for the title key */
3935                 lba = authinfo->lba;
3936                 break;
3937         case DVD_REPORT_ASF:
3938                 length = sizeof(struct scsi_report_key_data_asf);
3939                 break;
3940         case DVD_REPORT_RPC:
3941                 length = sizeof(struct scsi_report_key_data_rpc);
3942                 break;
3943         case DVD_INVALIDATE_AGID:
3944                 length = 0;
3945                 break;
3946         default:
3947                 error = EINVAL;
3948                 goto bailout;
3949                 break; /* NOTREACHED */
3950         }
3951
3952         if (length != 0) {
3953                 databuf = malloc(length, M_DEVBUF, M_WAITOK | M_ZERO);
3954         } else
3955                 databuf = NULL;
3956
3957
3958         scsi_report_key(&ccb->csio,
3959                         /* retries */ 1,
3960                         /* cbfcnp */ cddone,
3961                         /* tag_action */ MSG_SIMPLE_Q_TAG,
3962                         /* lba */ lba,
3963                         /* agid */ authinfo->agid,
3964                         /* key_format */ authinfo->format,
3965                         /* data_ptr */ databuf,
3966                         /* dxfer_len */ length,
3967                         /* sense_len */ SSD_FULL_SIZE,
3968                         /* timeout */ 50000);
3969
3970         error = cdrunccb(ccb, cderror, /*cam_flags*/0,
3971                          /*sense_flags*/SF_RETRY_UA | SF_RETRY_SELTO);
3972
3973         if (error != 0)
3974                 goto bailout;
3975
3976         if (ccb->csio.resid != 0) {
3977                 xpt_print_path(periph->path);
3978                 printf("warning, residual for report key command is %d\n",
3979                        ccb->csio.resid);
3980         }
3981
3982         switch(authinfo->format) {
3983         case DVD_REPORT_AGID: {
3984                 struct scsi_report_key_data_agid *agid_data;
3985
3986                 agid_data = (struct scsi_report_key_data_agid *)databuf;
3987
3988                 authinfo->agid = (agid_data->agid & RKD_AGID_MASK) >>
3989                         RKD_AGID_SHIFT;
3990                 break;
3991         }
3992         case DVD_REPORT_CHALLENGE: {
3993                 struct scsi_report_key_data_challenge *chal_data;
3994
3995                 chal_data = (struct scsi_report_key_data_challenge *)databuf;
3996
3997                 bcopy(chal_data->challenge_key, authinfo->keychal,
3998                       min(sizeof(chal_data->challenge_key),
3999                           sizeof(authinfo->keychal)));
4000                 break;
4001         }
4002         case DVD_REPORT_KEY1: {
4003                 struct scsi_report_key_data_key1_key2 *key1_data;
4004
4005                 key1_data = (struct scsi_report_key_data_key1_key2 *)databuf;
4006
4007                 bcopy(key1_data->key1, authinfo->keychal,
4008                       min(sizeof(key1_data->key1), sizeof(authinfo->keychal)));
4009                 break;
4010         }
4011         case DVD_REPORT_TITLE_KEY: {
4012                 struct scsi_report_key_data_title *title_data;
4013
4014                 title_data = (struct scsi_report_key_data_title *)databuf;
4015
4016                 authinfo->cpm = (title_data->byte0 & RKD_TITLE_CPM) >>
4017                         RKD_TITLE_CPM_SHIFT;
4018                 authinfo->cp_sec = (title_data->byte0 & RKD_TITLE_CP_SEC) >>
4019                         RKD_TITLE_CP_SEC_SHIFT;
4020                 authinfo->cgms = (title_data->byte0 & RKD_TITLE_CMGS_MASK) >>
4021                         RKD_TITLE_CMGS_SHIFT;
4022                 bcopy(title_data->title_key, authinfo->keychal,
4023                       min(sizeof(title_data->title_key),
4024                           sizeof(authinfo->keychal)));
4025                 break;
4026         }
4027         case DVD_REPORT_ASF: {
4028                 struct scsi_report_key_data_asf *asf_data;
4029
4030                 asf_data = (struct scsi_report_key_data_asf *)databuf;
4031
4032                 authinfo->asf = asf_data->success & RKD_ASF_SUCCESS;
4033                 break;
4034         }
4035         case DVD_REPORT_RPC: {
4036                 struct scsi_report_key_data_rpc *rpc_data;
4037
4038                 rpc_data = (struct scsi_report_key_data_rpc *)databuf;
4039
4040                 authinfo->reg_type = (rpc_data->byte4 & RKD_RPC_TYPE_MASK) >>
4041                         RKD_RPC_TYPE_SHIFT;
4042                 authinfo->vend_rsts =
4043                         (rpc_data->byte4 & RKD_RPC_VENDOR_RESET_MASK) >>
4044                         RKD_RPC_VENDOR_RESET_SHIFT;
4045                 authinfo->user_rsts = rpc_data->byte4 & RKD_RPC_USER_RESET_MASK;
4046                 authinfo->region = rpc_data->region_mask;
4047                 authinfo->rpc_scheme = rpc_data->rpc_scheme1;
4048                 break;
4049         }
4050         case DVD_INVALIDATE_AGID:
4051                 break;
4052         default:
4053                 /* This should be impossible, since we checked above */
4054                 error = EINVAL;
4055                 goto bailout;
4056                 break; /* NOTREACHED */
4057         }
4058 bailout:
4059         if (databuf != NULL)
4060                 free(databuf, M_DEVBUF);
4061
4062         xpt_release_ccb(ccb);
4063
4064         return(error);
4065 }
4066
4067 static int
4068 cdsendkey(struct cam_periph *periph, struct dvd_authinfo *authinfo)
4069 {
4070         union ccb *ccb;
4071         u_int8_t *databuf;
4072         int length;
4073         int error;
4074
4075         error = 0;
4076         databuf = NULL;
4077
4078         ccb = cdgetccb(periph, /* priority */ 1);
4079
4080         switch(authinfo->format) {
4081         case DVD_SEND_CHALLENGE: {
4082                 struct scsi_report_key_data_challenge *challenge_data;
4083
4084                 length = sizeof(*challenge_data);
4085
4086                 challenge_data = malloc(length, M_DEVBUF, M_WAITOK | M_ZERO);
4087
4088                 databuf = (u_int8_t *)challenge_data;
4089
4090                 scsi_ulto2b(length - sizeof(challenge_data->data_len),
4091                             challenge_data->data_len);
4092
4093                 bcopy(authinfo->keychal, challenge_data->challenge_key,
4094                       min(sizeof(authinfo->keychal),
4095                           sizeof(challenge_data->challenge_key)));
4096                 break;
4097         }
4098         case DVD_SEND_KEY2: {
4099                 struct scsi_report_key_data_key1_key2 *key2_data;
4100
4101                 length = sizeof(*key2_data);
4102
4103                 key2_data = malloc(length, M_DEVBUF, M_WAITOK | M_ZERO);
4104
4105                 databuf = (u_int8_t *)key2_data;
4106
4107                 scsi_ulto2b(length - sizeof(key2_data->data_len),
4108                             key2_data->data_len);
4109
4110                 bcopy(authinfo->keychal, key2_data->key1,
4111                       min(sizeof(authinfo->keychal), sizeof(key2_data->key1)));
4112
4113                 break;
4114         }
4115         case DVD_SEND_RPC: {
4116                 struct scsi_send_key_data_rpc *rpc_data;
4117
4118                 length = sizeof(*rpc_data);
4119
4120                 rpc_data = malloc(length, M_DEVBUF, M_WAITOK | M_ZERO);
4121
4122                 databuf = (u_int8_t *)rpc_data;
4123
4124                 scsi_ulto2b(length - sizeof(rpc_data->data_len),
4125                             rpc_data->data_len);
4126
4127                 rpc_data->region_code = authinfo->region;
4128                 break;
4129         }
4130         default:
4131                 error = EINVAL;
4132                 goto bailout;
4133                 break; /* NOTREACHED */
4134         }
4135
4136         scsi_send_key(&ccb->csio,
4137                       /* retries */ 1,
4138                       /* cbfcnp */ cddone,
4139                       /* tag_action */ MSG_SIMPLE_Q_TAG,
4140                       /* agid */ authinfo->agid,
4141                       /* key_format */ authinfo->format,
4142                       /* data_ptr */ databuf,
4143                       /* dxfer_len */ length,
4144                       /* sense_len */ SSD_FULL_SIZE,
4145                       /* timeout */ 50000);
4146
4147         error = cdrunccb(ccb, cderror, /*cam_flags*/0,
4148                          /*sense_flags*/SF_RETRY_UA | SF_RETRY_SELTO);
4149
4150 bailout:
4151
4152         if (databuf != NULL)
4153                 free(databuf, M_DEVBUF);
4154
4155         xpt_release_ccb(ccb);
4156
4157         return(error);
4158 }
4159
4160 static int
4161 cdreaddvdstructure(struct cam_periph *periph, struct dvd_struct *dvdstruct)
4162 {
4163         union ccb *ccb;
4164         u_int8_t *databuf;
4165         u_int32_t address;
4166         int error;
4167         int length;
4168
4169         error = 0;
4170         databuf = NULL;
4171         /* The address is reserved for many of the formats */
4172         address = 0;
4173
4174         ccb = cdgetccb(periph, /* priority */ 1);
4175
4176         switch(dvdstruct->format) {
4177         case DVD_STRUCT_PHYSICAL:
4178                 length = sizeof(struct scsi_read_dvd_struct_data_physical);
4179                 break;
4180         case DVD_STRUCT_COPYRIGHT:
4181                 length = sizeof(struct scsi_read_dvd_struct_data_copyright);
4182                 break;
4183         case DVD_STRUCT_DISCKEY:
4184                 length = sizeof(struct scsi_read_dvd_struct_data_disc_key);
4185                 break;
4186         case DVD_STRUCT_BCA:
4187                 length = sizeof(struct scsi_read_dvd_struct_data_bca);
4188                 break;
4189         case DVD_STRUCT_MANUFACT:
4190                 length = sizeof(struct scsi_read_dvd_struct_data_manufacturer);
4191                 break;
4192         case DVD_STRUCT_CMI:
4193                 error = ENODEV;
4194                 goto bailout;
4195 #ifdef notyet
4196                 length = sizeof(struct scsi_read_dvd_struct_data_copy_manage);
4197                 address = dvdstruct->address;
4198 #endif
4199                 break; /* NOTREACHED */
4200         case DVD_STRUCT_PROTDISCID:
4201                 length = sizeof(struct scsi_read_dvd_struct_data_prot_discid);
4202                 break;
4203         case DVD_STRUCT_DISCKEYBLOCK:
4204                 length = sizeof(struct scsi_read_dvd_struct_data_disc_key_blk);
4205                 break;
4206         case DVD_STRUCT_DDS:
4207                 length = sizeof(struct scsi_read_dvd_struct_data_dds);
4208                 break;
4209         case DVD_STRUCT_MEDIUM_STAT:
4210                 length = sizeof(struct scsi_read_dvd_struct_data_medium_status);
4211                 break;
4212         case DVD_STRUCT_SPARE_AREA:
4213                 length = sizeof(struct scsi_read_dvd_struct_data_spare_area);
4214                 break;
4215         case DVD_STRUCT_RMD_LAST:
4216                 error = ENODEV;
4217                 goto bailout;
4218 #ifdef notyet
4219                 length = sizeof(struct scsi_read_dvd_struct_data_rmd_borderout);
4220                 address = dvdstruct->address;
4221 #endif
4222                 break; /* NOTREACHED */
4223         case DVD_STRUCT_RMD_RMA:
4224                 error = ENODEV;
4225                 goto bailout;
4226 #ifdef notyet
4227                 length = sizeof(struct scsi_read_dvd_struct_data_rmd);
4228                 address = dvdstruct->address;
4229 #endif
4230                 break; /* NOTREACHED */
4231         case DVD_STRUCT_PRERECORDED:
4232                 length = sizeof(struct scsi_read_dvd_struct_data_leadin);
4233                 break;
4234         case DVD_STRUCT_UNIQUEID:
4235                 length = sizeof(struct scsi_read_dvd_struct_data_disc_id);
4236                 break;
4237         case DVD_STRUCT_DCB:
4238                 error = ENODEV;
4239                 goto bailout;
4240 #ifdef notyet
4241                 length = sizeof(struct scsi_read_dvd_struct_data_dcb);
4242                 address = dvdstruct->address;
4243 #endif
4244                 break; /* NOTREACHED */
4245         case DVD_STRUCT_LIST:
4246                 /*
4247                  * This is the maximum allocation length for the READ DVD
4248                  * STRUCTURE command.  There's nothing in the MMC3 spec
4249                  * that indicates a limit in the amount of data that can
4250                  * be returned from this call, other than the limits
4251                  * imposed by the 2-byte length variables.
4252                  */
4253                 length = 65535;
4254                 break;
4255         default:
4256                 error = EINVAL;
4257                 goto bailout;
4258                 break; /* NOTREACHED */
4259         }
4260
4261         if (length != 0) {
4262                 databuf = malloc(length, M_DEVBUF, M_WAITOK | M_ZERO);
4263         } else
4264                 databuf = NULL;
4265
4266         scsi_read_dvd_structure(&ccb->csio,
4267                                 /* retries */ 1,
4268                                 /* cbfcnp */ cddone,
4269                                 /* tag_action */ MSG_SIMPLE_Q_TAG,
4270                                 /* lba */ address,
4271                                 /* layer_number */ dvdstruct->layer_num,
4272                                 /* key_format */ dvdstruct->format,
4273                                 /* agid */ dvdstruct->agid,
4274                                 /* data_ptr */ databuf,
4275                                 /* dxfer_len */ length,
4276                                 /* sense_len */ SSD_FULL_SIZE,
4277                                 /* timeout */ 50000);
4278
4279         error = cdrunccb(ccb, cderror, /*cam_flags*/0,
4280                          /*sense_flags*/SF_RETRY_UA | SF_RETRY_SELTO);
4281
4282         if (error != 0)
4283                 goto bailout;
4284
4285         switch(dvdstruct->format) {
4286         case DVD_STRUCT_PHYSICAL: {
4287                 struct scsi_read_dvd_struct_data_layer_desc *inlayer;
4288                 struct dvd_layer *outlayer;
4289                 struct scsi_read_dvd_struct_data_physical *phys_data;
4290
4291                 phys_data =
4292                         (struct scsi_read_dvd_struct_data_physical *)databuf;
4293                 inlayer = &phys_data->layer_desc;
4294                 outlayer = (struct dvd_layer *)&dvdstruct->data;
4295
4296                 dvdstruct->length = sizeof(*inlayer);
4297
4298                 outlayer->book_type = (inlayer->book_type_version &
4299                         RDSD_BOOK_TYPE_MASK) >> RDSD_BOOK_TYPE_SHIFT;
4300                 outlayer->book_version = (inlayer->book_type_version &
4301                         RDSD_BOOK_VERSION_MASK);
4302                 outlayer->disc_size = (inlayer->disc_size_max_rate &
4303                         RDSD_DISC_SIZE_MASK) >> RDSD_DISC_SIZE_SHIFT;
4304                 outlayer->max_rate = (inlayer->disc_size_max_rate &
4305                         RDSD_MAX_RATE_MASK);
4306                 outlayer->nlayers = (inlayer->layer_info &
4307                         RDSD_NUM_LAYERS_MASK) >> RDSD_NUM_LAYERS_SHIFT;
4308                 outlayer->track_path = (inlayer->layer_info &
4309                         RDSD_TRACK_PATH_MASK) >> RDSD_TRACK_PATH_SHIFT;
4310                 outlayer->layer_type = (inlayer->layer_info &
4311                         RDSD_LAYER_TYPE_MASK);
4312                 outlayer->linear_density = (inlayer->density &
4313                         RDSD_LIN_DENSITY_MASK) >> RDSD_LIN_DENSITY_SHIFT;
4314                 outlayer->track_density = (inlayer->density &
4315                         RDSD_TRACK_DENSITY_MASK);
4316                 outlayer->bca = (inlayer->bca & RDSD_BCA_MASK) >>
4317                         RDSD_BCA_SHIFT;
4318                 outlayer->start_sector = scsi_3btoul(inlayer->main_data_start);
4319                 outlayer->end_sector = scsi_3btoul(inlayer->main_data_end);
4320                 outlayer->end_sector_l0 =
4321                         scsi_3btoul(inlayer->end_sector_layer0);
4322                 break;
4323         }
4324         case DVD_STRUCT_COPYRIGHT: {
4325                 struct scsi_read_dvd_struct_data_copyright *copy_data;
4326
4327                 copy_data = (struct scsi_read_dvd_struct_data_copyright *)
4328                         databuf;
4329
4330                 dvdstruct->cpst = copy_data->cps_type;
4331                 dvdstruct->rmi = copy_data->region_info;
4332                 dvdstruct->length = 0;
4333
4334                 break;
4335         }
4336         default:
4337                 /*
4338                  * Tell the user what the overall length is, no matter
4339                  * what we can actually fit in the data buffer.
4340                  */
4341                 dvdstruct->length = length - ccb->csio.resid -
4342                         sizeof(struct scsi_read_dvd_struct_data_header);
4343
4344                 /*
4345                  * But only actually copy out the smaller of what we read
4346                  * in or what the structure can take.
4347                  */
4348                 bcopy(databuf + sizeof(struct scsi_read_dvd_struct_data_header),
4349                       dvdstruct->data,
4350                       min(sizeof(dvdstruct->data), dvdstruct->length));
4351                 break;
4352         }
4353 bailout:
4354
4355         if (databuf != NULL)
4356                 free(databuf, M_DEVBUF);
4357
4358         xpt_release_ccb(ccb);
4359
4360         return(error);
4361 }
4362
4363 void
4364 scsi_report_key(struct ccb_scsiio *csio, u_int32_t retries,
4365                 void (*cbfcnp)(struct cam_periph *, union ccb *),
4366                 u_int8_t tag_action, u_int32_t lba, u_int8_t agid,
4367                 u_int8_t key_format, u_int8_t *data_ptr, u_int32_t dxfer_len,
4368                 u_int8_t sense_len, u_int32_t timeout)
4369 {
4370         struct scsi_report_key *scsi_cmd;
4371
4372         scsi_cmd = (struct scsi_report_key *)&csio->cdb_io.cdb_bytes;
4373         bzero(scsi_cmd, sizeof(*scsi_cmd));
4374         scsi_cmd->opcode = REPORT_KEY;
4375         scsi_ulto4b(lba, scsi_cmd->lba);
4376         scsi_ulto2b(dxfer_len, scsi_cmd->alloc_len);
4377         scsi_cmd->agid_keyformat = (agid << RK_KF_AGID_SHIFT) |
4378                 (key_format & RK_KF_KEYFORMAT_MASK);
4379
4380         cam_fill_csio(csio,
4381                       retries,
4382                       cbfcnp,
4383                       /*flags*/ (dxfer_len == 0) ? CAM_DIR_NONE : CAM_DIR_IN,
4384                       tag_action,
4385                       /*data_ptr*/ data_ptr,
4386                       /*dxfer_len*/ dxfer_len,
4387                       sense_len,
4388                       sizeof(*scsi_cmd),
4389                       timeout);
4390 }
4391
4392 void
4393 scsi_send_key(struct ccb_scsiio *csio, u_int32_t retries,
4394               void (*cbfcnp)(struct cam_periph *, union ccb *),
4395               u_int8_t tag_action, u_int8_t agid, u_int8_t key_format,
4396               u_int8_t *data_ptr, u_int32_t dxfer_len, u_int8_t sense_len,
4397               u_int32_t timeout)
4398 {
4399         struct scsi_send_key *scsi_cmd;
4400
4401         scsi_cmd = (struct scsi_send_key *)&csio->cdb_io.cdb_bytes;
4402         bzero(scsi_cmd, sizeof(*scsi_cmd));
4403         scsi_cmd->opcode = SEND_KEY;
4404
4405         scsi_ulto2b(dxfer_len, scsi_cmd->param_len);
4406         scsi_cmd->agid_keyformat = (agid << RK_KF_AGID_SHIFT) |
4407                 (key_format & RK_KF_KEYFORMAT_MASK);
4408
4409         cam_fill_csio(csio,
4410                       retries,
4411                       cbfcnp,
4412                       /*flags*/ CAM_DIR_OUT,
4413                       tag_action,
4414                       /*data_ptr*/ data_ptr,
4415                       /*dxfer_len*/ dxfer_len,
4416                       sense_len,
4417                       sizeof(*scsi_cmd),
4418                       timeout);
4419 }
4420
4421
4422 void
4423 scsi_read_dvd_structure(struct ccb_scsiio *csio, u_int32_t retries,
4424                         void (*cbfcnp)(struct cam_periph *, union ccb *),
4425                         u_int8_t tag_action, u_int32_t address,
4426                         u_int8_t layer_number, u_int8_t format, u_int8_t agid,
4427                         u_int8_t *data_ptr, u_int32_t dxfer_len,
4428                         u_int8_t sense_len, u_int32_t timeout)
4429 {
4430         struct scsi_read_dvd_structure *scsi_cmd;
4431
4432         scsi_cmd = (struct scsi_read_dvd_structure *)&csio->cdb_io.cdb_bytes;
4433         bzero(scsi_cmd, sizeof(*scsi_cmd));
4434         scsi_cmd->opcode = READ_DVD_STRUCTURE;
4435
4436         scsi_ulto4b(address, scsi_cmd->address);
4437         scsi_cmd->layer_number = layer_number;
4438         scsi_cmd->format = format;
4439         scsi_ulto2b(dxfer_len, scsi_cmd->alloc_len);
4440         /* The AGID is the top two bits of this byte */
4441         scsi_cmd->agid = agid << 6;
4442
4443         cam_fill_csio(csio,
4444                       retries,
4445                       cbfcnp,
4446                       /*flags*/ CAM_DIR_IN,
4447                       tag_action,
4448                       /*data_ptr*/ data_ptr,
4449                       /*dxfer_len*/ dxfer_len,
4450                       sense_len,
4451                       sizeof(*scsi_cmd),
4452                       timeout);
4453 }