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 1.19 2005/09/21 18:58:55 hsu 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 #include <sys/thread2.h>
  69
  70 #include "../cam.h"
  71 #include "../cam_ccb.h"
  72 #include "../cam_extend.h"
  73 #include "../cam_periph.h"
  74 #include "../cam_xpt_periph.h"
  75 #include "../cam_queue.h"
  76
  77 #include "scsi_message.h"
  78 #include "scsi_da.h"
  79 #include "scsi_cd.h"
  80
  81 #define LEADOUT         0xaa            /* leadout toc entry */
  82
  83 struct cd_params {
  84         u_int32_t blksize;
  85         u_long    disksize;
  86 };
  87
  88 typedef enum {
  89         CD_Q_NONE               = 0x00,
  90         CD_Q_NO_TOUCH           = 0x01,
  91         CD_Q_BCD_TRACKS         = 0x02,
  92         CD_Q_NO_CHANGER         = 0x04,
  93         CD_Q_CHANGER            = 0x08,
  94         CD_Q_10_BYTE_ONLY       = 0x10
  95 } cd_quirks;
  96
  97 typedef enum {
  98         CD_FLAG_INVALID         = 0x0001,
  99         CD_FLAG_NEW_DISC        = 0x0002,
 100         CD_FLAG_DISC_LOCKED     = 0x0004,
 101         CD_FLAG_DISC_REMOVABLE  = 0x0008,
 102         CD_FLAG_TAGGED_QUEUING  = 0x0010,
 103         CD_FLAG_CHANGER         = 0x0040,
 104         CD_FLAG_ACTIVE          = 0x0080,
 105         CD_FLAG_SCHED_ON_COMP   = 0x0100,
 106         CD_FLAG_RETRY_UA        = 0x0200,
 107         CD_FLAG_VALID_MEDIA     = 0x0400,
 108         CD_FLAG_VALID_TOC       = 0x0800,
 109         CD_FLAG_OPEN            = 0x1000,
 110         CD_FLAG_SCTX_INIT       = 0x2000
 111 } cd_flags;
 112
 113 typedef enum {
 114         CD_CCB_PROBE            = 0x01,
 115         CD_CCB_BUFFER_IO        = 0x02,
 116         CD_CCB_WAITING          = 0x03,
 117         CD_CCB_TYPE_MASK        = 0x0F,
 118         CD_CCB_RETRY_UA         = 0x10
 119 } cd_ccb_state;
 120
 121 typedef enum {
 122         CHANGER_TIMEOUT_SCHED           = 0x01,
 123         CHANGER_SHORT_TMOUT_SCHED       = 0x02,
 124         CHANGER_MANUAL_CALL             = 0x04,
 125         CHANGER_NEED_TIMEOUT            = 0x08
 126 } cd_changer_flags;
 127
 128 #define ccb_state ppriv_field0
 129 #define ccb_bp ppriv_ptr1
 130
 131 struct cd_tocdata {
 132         struct ioc_toc_header header;
 133         struct cd_toc_entry entries[100];
 134 };
 135
 136 struct cd_toc_single {
 137         struct ioc_toc_header header;
 138         struct cd_toc_entry entry;
 139 };
 140
 141 typedef enum {
 142         CD_STATE_PROBE,
 143         CD_STATE_NORMAL
 144 } cd_state;
 145
 146 struct cd_softc {
 147         cam_pinfo               pinfo;
 148         cd_state                state;
 149         volatile cd_flags       flags;
 150         struct buf_queue_head   buf_queue;
 151         LIST_HEAD(, ccb_hdr)    pending_ccbs;
 152         struct cd_params        params;
 153         struct disk             disk;
 154         union ccb               saved_ccb;
 155         cd_quirks               quirks;
 156         struct devstat          device_stats;
 157         STAILQ_ENTRY(cd_softc)  changer_links;
 158         struct cdchanger        *changer;
 159         int                     bufs_left;
 160         struct cam_periph       *periph;
 161         int                     minimum_command_size;
 162         struct task             sysctl_task;
 163         struct sysctl_ctx_list  sysctl_ctx;
 164         struct sysctl_oid       *sysctl_tree;
 165         STAILQ_HEAD(, cd_mode_params)   mode_queue;
 166         struct cd_tocdata       toc;
 167 };
 168
 169 struct cd_page_sizes {
 170         int page;
 171         int page_size;
 172 };
 173
 174 static struct cd_page_sizes cd_page_size_table[] =
 175 {
 176         { AUDIO_PAGE, sizeof(struct cd_audio_page)}
 177 };
 178
 179 struct cd_quirk_entry {
 180         struct scsi_inquiry_pattern inq_pat;
 181         cd_quirks quirks;
 182 };
 183
 184 /*
 185  * The changer quirk entries aren't strictly necessary.  Basically, what
 186  * they do is tell cdregister() up front that a device is a changer.
 187  * Otherwise, it will figure that fact out once it sees a LUN on the device
 188  * that is greater than 0.  If it is known up front that a device is a changer,
 189  * all I/O to the device will go through the changer scheduling routines, as
 190  * opposed to the "normal" CD code.
 191  *
 192  * NOTE ON 10_BYTE_ONLY quirks:  Any 10_BYTE_ONLY quirks MUST be because
 193  * your device hangs when it gets a 10 byte command.  Adding a quirk just
 194  * to get rid of the informative diagnostic message is not acceptable.  All
 195  * 10_BYTE_ONLY quirks must be documented in full in a PR (which should be
 196  * referenced in a comment along with the quirk) , and must be approved by
 197  * ken@FreeBSD.org.  Any quirks added that don't adhere to this policy may
 198  * be removed until the submitter can explain why they are needed.
 199  * 10_BYTE_ONLY quirks will be removed (as they will no longer be necessary)
 200  * when the CAM_NEW_TRAN_CODE work is done.
 201  */
 202 static struct cd_quirk_entry cd_quirk_table[] =
 203 {
 204         {
 205                 { T_CDROM, SIP_MEDIA_REMOVABLE, "NRC", "MBR-7", "*"},
 206                  /*quirks*/ CD_Q_CHANGER
 207         },
 208         {
 209                 { T_CDROM, SIP_MEDIA_REMOVABLE, "PIONEER", "CD-ROM DRM*",
 210                   "*"}, /* quirks */ CD_Q_CHANGER
 211         },
 212         {
 213                 { T_CDROM, SIP_MEDIA_REMOVABLE, "NAKAMICH", "MJ-*", "*"},
 214                  /* quirks */ CD_Q_CHANGER
 215         },
 216         {
 217                 { T_CDROM, SIP_MEDIA_REMOVABLE, "CHINON", "CD-ROM CDS-535","*"},
 218                 /* quirks */ CD_Q_BCD_TRACKS
 219         }
 220 };
 221
 222 static  d_open_t        cdopen;
 223 static  d_close_t       cdclose;
 224 static  d_ioctl_t       cdioctl;
 225 static  d_strategy_t    cdstrategy;
 226
 227 static  periph_init_t   cdinit;
 228 static  periph_ctor_t   cdregister;
 229 static  periph_dtor_t   cdcleanup;
 230 static  periph_start_t  cdstart;
 231 static  periph_oninv_t  cdoninvalidate;
 232 static  void            cdasync(void *callback_arg, u_int32_t code,
 233                                 struct cam_path *path, void *arg);
 234 static  int             cdcmdsizesysctl(SYSCTL_HANDLER_ARGS);
 235 static  void            cdshorttimeout(void *arg);
 236 static  void            cdschedule(struct cam_periph *periph, int priority);
 237 static  void            cdrunchangerqueue(void *arg);
 238 static  void            cdchangerschedule(struct cd_softc *softc);
 239 static  int             cdrunccb(union ccb *ccb,
 240                                  int (*error_routine)(union ccb *ccb,
 241                                                       u_int32_t cam_flags,
 242                                                       u_int32_t sense_flags),
 243                                  u_int32_t cam_flags, u_int32_t sense_flags);
 244 static union    ccb     *cdgetccb(struct cam_periph *periph,
 245                                   u_int32_t priority);
 246 static  void            cddone(struct cam_periph *periph,
 247                                union ccb *start_ccb);
 248 static  int             cderror(union ccb *ccb, u_int32_t cam_flags,
 249                                 u_int32_t sense_flags);
 250 static  union cd_pages  *cdgetpage(struct cd_mode_params *mode_params);
 251 static  int             cdgetpagesize(int page_num);
 252 static  void            cdprevent(struct cam_periph *periph, int action);
 253 static  int             cdcheckmedia(struct cam_periph *periph);
 254 static  int             cdsize(struct cam_periph *periph, u_int32_t *size);
 255 static  int             cd6byteworkaround(union ccb *ccb);
 256 static  int             cdreadtoc(struct cam_periph *periph, u_int32_t mode,
 257                                   u_int32_t start, u_int8_t *data,
 258                                   u_int32_t len, u_int32_t sense_flags);
 259 static  int             cdgetmode(struct cam_periph *periph,
 260                                   struct cd_mode_params *data, u_int32_t page);
 261 static  int             cdsetmode(struct cam_periph *periph,
 262                                   struct cd_mode_params *data);
 263 static  int             cdplay(struct cam_periph *periph, u_int32_t blk,
 264                                u_int32_t len);
 265 static  int             cdreadsubchannel(struct cam_periph *periph,
 266                                          u_int32_t mode, u_int32_t format,
 267                                          int track,
 268                                          struct cd_sub_channel_info *data,
 269                                          u_int32_t len);
 270 static  int             cdplaymsf(struct cam_periph *periph, u_int32_t startm,
 271                                   u_int32_t starts, u_int32_t startf,
 272                                   u_int32_t endm, u_int32_t ends,
 273                                   u_int32_t endf);
 274 static  int             cdplaytracks(struct cam_periph *periph,
 275                                      u_int32_t strack, u_int32_t sindex,
 276                                      u_int32_t etrack, u_int32_t eindex);
 277 static  int             cdpause(struct cam_periph *periph, u_int32_t go);
 278 static  int             cdstopunit(struct cam_periph *periph, u_int32_t eject);
 279 static  int             cdstartunit(struct cam_periph *periph, int load);
 280 static  int             cdsetspeed(struct cam_periph *periph,
 281                                    u_int32_t rdspeed, u_int32_t wrspeed);
 282 static  int             cdreportkey(struct cam_periph *periph,
 283                                     struct dvd_authinfo *authinfo);
 284 static  int             cdsendkey(struct cam_periph *periph,
 285                                   struct dvd_authinfo *authinfo);
 286 static  int             cdreaddvdstructure(struct cam_periph *periph,
 287                                            struct dvd_struct *dvdstruct);
 288
 289 static struct periph_driver cddriver =
 290 {
 291         cdinit, "cd",
 292         TAILQ_HEAD_INITIALIZER(cddriver.units), /* generation */ 0
 293 };
 294
 295 DATA_SET(periphdriver_set, cddriver);
 296
 297 /* For 2.2-stable support */
 298 #ifndef D_DISK
 299 #define D_DISK 0
 300 #endif
 301 static struct cdevsw cd_cdevsw = {
 302         /* name */      "cd",
 303         /* maj */       SCSICD_CDEV_MAJOR,
 304         /* flags */     D_DISK,
 305         /* port */      NULL,
 306         /* clone */     NULL,
 307
 308         /* open */      cdopen,
 309         /* close */     cdclose,
 310         /* read */      physread,
 311         /* write */     physwrite,
 312         /* ioctl */     cdioctl,
 313         /* poll */      nopoll,
 314         /* mmap */      nommap,
 315         /* strategy */  cdstrategy,
 316         /* dump */      nodump,
 317         /* psize */     nopsize,
 318 };
 319
 320 static struct extend_array *cdperiphs;
 321 static int num_changers;
 322
 323 #ifndef CHANGER_MIN_BUSY_SECONDS
 324 #define CHANGER_MIN_BUSY_SECONDS        5
 325 #endif
 326 #ifndef CHANGER_MAX_BUSY_SECONDS
 327 #define CHANGER_MAX_BUSY_SECONDS        15
 328 #endif
 329
 330 static int changer_min_busy_seconds = CHANGER_MIN_BUSY_SECONDS;
 331 static int changer_max_busy_seconds = CHANGER_MAX_BUSY_SECONDS;
 332
 333 /*
 334  * XXX KDM this CAM node should be moved if we ever get more CAM sysctl
 335  * variables.
 336  */
 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                   short_handle;
 354         struct callout                   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         struct cd_softc *softc;
 407         struct buf *q_bp;
 408         struct ccb_setasync csa;
 409
 410         softc = (struct cd_softc *)periph->softc;
 411
 412         /*
 413          * De-register any async callbacks.
 414          */
 415         xpt_setup_ccb(&csa.ccb_h, periph->path,
 416                       /* priority */ 5);
 417         csa.ccb_h.func_code = XPT_SASYNC_CB;
 418         csa.event_enable = 0;
 419         csa.callback = cdasync;
 420         csa.callback_arg = periph;
 421         xpt_action((union ccb *)&csa);
 422
 423         softc->flags |= CD_FLAG_INVALID;
 424
 425         /*
 426          * Although the oninvalidate() routines are always while in a
 427          * critical section, we need to be in a critical section here to
 428          * keep the buffer queue from being modified while we traverse it.
 429          */
 430         crit_enter();
 431
 432         /*
 433          * Return all queued I/O with ENXIO.
 434          * XXX Handle any transactions queued to the card
 435          *     with XPT_ABORT_CCB.
 436          */
 437         while ((q_bp = bufq_first(&softc->buf_queue)) != NULL){
 438                 bufq_remove(&softc->buf_queue, q_bp);
 439                 q_bp->b_resid = q_bp->b_bcount;
 440                 q_bp->b_error = ENXIO;
 441                 q_bp->b_flags |= B_ERROR;
 442                 biodone(q_bp);
 443         }
 444         crit_exit();
 445
 446         /*
 447          * If this device is part of a changer, and it was scheduled
 448          * to run, remove it from the run queue since we just nuked
 449          * all of its scheduled I/O.
 450          */
 451         if ((softc->flags & CD_FLAG_CHANGER)
 452          && (softc->pinfo.index != CAM_UNQUEUED_INDEX))
 453                 camq_remove(&softc->changer->devq, softc->pinfo.index);
 454
 455         xpt_print_path(periph->path);
 456         printf("lost device\n");
 457 }
 458
 459 static void
 460 cdcleanup(struct cam_periph *periph)
 461 {
 462         struct cd_softc *softc;
 463
 464         softc = (struct cd_softc *)periph->softc;
 465
 466         xpt_print_path(periph->path);
 467         printf("removing device entry\n");
 468
 469         if ((softc->flags & CD_FLAG_SCTX_INIT) != 0
 470             && sysctl_ctx_free(&softc->sysctl_ctx) != 0) {
 471                 xpt_print_path(periph->path);
 472                 printf("can't remove sysctl context\n");
 473         }
 474
 475         crit_enter();
 476         /*
 477          * In the queued, non-active case, the device in question
 478          * has already been removed from the changer run queue.  Since this
 479          * device is active, we need to de-activate it, and schedule
 480          * another device to run.  (if there is another one to run)
 481          */
 482         if ((softc->flags & CD_FLAG_CHANGER)
 483          && (softc->flags & CD_FLAG_ACTIVE)) {
 484
 485                 /*
 486                  * The purpose of the short timeout is soley to determine
 487                  * whether the current device has finished or not.  Well,
 488                  * since we're removing the active device, we know that it
 489                  * is finished.  So, get rid of the short timeout.
 490                  * Otherwise, if we're in the time period before the short
 491                  * timeout fires, and there are no other devices in the
 492                  * queue to run, there won't be any other device put in the
 493                  * active slot.  i.e., when we call cdrunchangerqueue()
 494                  * below, it won't do anything.  Then, when the short
 495                  * timeout fires, it'll look at the "current device", which
 496                  * we are free below, and possibly panic the kernel on a
 497                  * bogus pointer reference.
 498                  *
 499                  * The long timeout doesn't really matter, since we
 500                  * decrement the qfrozen_cnt to indicate that there is
 501                  * nothing in the active slot now.  Therefore, there won't
 502                  * be any bogus pointer references there.
 503                  */
 504                 if (softc->changer->flags & CHANGER_SHORT_TMOUT_SCHED) {
 505                         callout_stop(&softc->changer->short_handle);
 506                         softc->changer->flags &= ~CHANGER_SHORT_TMOUT_SCHED;
 507                 }
 508                 softc->changer->devq.qfrozen_cnt--;
 509                 softc->changer->flags |= CHANGER_MANUAL_CALL;
 510                 cdrunchangerqueue(softc->changer);
 511         }
 512
 513         /*
 514          * If we're removing the last device on the changer, go ahead and
 515          * remove the changer device structure.
 516          */
 517         if ((softc->flags & CD_FLAG_CHANGER)
 518          && (--softc->changer->num_devices == 0)) {
 519
 520                 /*
 521                  * Theoretically, there shouldn't be any timeouts left, but
 522                  * I'm not completely sure that that will be the case.  So,
 523                  * it won't hurt to check and see if there are any left.
 524                  */
 525                 if (softc->changer->flags & CHANGER_TIMEOUT_SCHED) {
 526                         callout_stop(&softc->changer->long_handle);
 527                         softc->changer->flags &= ~CHANGER_TIMEOUT_SCHED;
 528                 }
 529
 530                 if (softc->changer->flags & CHANGER_SHORT_TMOUT_SCHED) {
 531                         callout_stop(&softc->changer->short_handle);
 532                         softc->changer->flags &= ~CHANGER_SHORT_TMOUT_SCHED;
 533                 }
 534
 535                 STAILQ_REMOVE(&changerq, softc->changer, cdchanger,
 536                               changer_links);
 537                 xpt_print_path(periph->path);
 538                 printf("removing changer entry\n");
 539                 free(softc->changer, M_DEVBUF);
 540                 num_changers--;
 541         }
 542         devstat_remove_entry(&softc->device_stats);
 543         cam_extend_release(cdperiphs, periph->unit_number);
 544         if (softc->disk.d_rawdev) {
 545                 disk_destroy(&softc->disk);
 546         }
 547         free(softc, M_DEVBUF);
 548         crit_exit();
 549 }
 550
 551 static void
 552 cdasync(void *callback_arg, u_int32_t code,
 553         struct cam_path *path, void *arg)
 554 {
 555         struct cam_periph *periph;
 556
 557         periph = (struct cam_periph *)callback_arg;
 558         switch (code) {
 559         case AC_FOUND_DEVICE:
 560         {
 561                 struct ccb_getdev *cgd;
 562                 cam_status status;
 563
 564                 cgd = (struct ccb_getdev *)arg;
 565
 566                 if (SID_TYPE(&cgd->inq_data) != T_CDROM
 567                     && SID_TYPE(&cgd->inq_data) != T_WORM)
 568                         break;
 569
 570                 /*
 571                  * Allocate a peripheral instance for
 572                  * this device and start the probe
 573                  * process.
 574                  */
 575                 status = cam_periph_alloc(cdregister, cdoninvalidate,
 576                                           cdcleanup, cdstart,
 577                                           "cd", CAM_PERIPH_BIO,
 578                                           cgd->ccb_h.path, cdasync,
 579                                           AC_FOUND_DEVICE, cgd);
 580
 581                 if (status != CAM_REQ_CMP
 582                  && status != CAM_REQ_INPROG)
 583                         printf("cdasync: Unable to attach new device "
 584                                "due to status 0x%x\n", status);
 585
 586                 break;
 587         }
 588         case AC_SENT_BDR:
 589         case AC_BUS_RESET:
 590         {
 591                 struct cd_softc *softc;
 592                 struct ccb_hdr *ccbh;
 593
 594                 softc = (struct cd_softc *)periph->softc;
 595                 crit_enter();
 596                 /*
 597                  * Don't fail on the expected unit attention
 598                  * that will occur.
 599                  */
 600                 softc->flags |= CD_FLAG_RETRY_UA;
 601                 for (ccbh = LIST_FIRST(&softc->pending_ccbs);
 602                      ccbh != NULL; ccbh = LIST_NEXT(ccbh, periph_links.le))
 603                         ccbh->ccb_state |= CD_CCB_RETRY_UA;
 604                 crit_exit();
 605                 /* FALLTHROUGH */
 606         }
 607         default:
 608                 cam_periph_async(periph, code, path, arg);
 609                 break;
 610         }
 611 }
 612
 613 static void
 614 cdsysctlinit(void *context, int pending)
 615 {
 616         struct cam_periph *periph;
 617         struct cd_softc *softc;
 618         char tmpstr[80], tmpstr2[80];
 619
 620         periph = (struct cam_periph *)context;
 621         softc = (struct cd_softc *)periph->softc;
 622
 623         snprintf(tmpstr, sizeof(tmpstr), "CAM CD unit %d", periph->unit_number);
 624         snprintf(tmpstr2, sizeof(tmpstr2), "%d", periph->unit_number);
 625
 626         sysctl_ctx_init(&softc->sysctl_ctx);
 627         softc->flags |= CD_FLAG_SCTX_INIT;
 628         softc->sysctl_tree = SYSCTL_ADD_NODE(&softc->sysctl_ctx,
 629         SYSCTL_STATIC_CHILDREN(_kern_cam_cd), OID_AUTO,
 630         tmpstr2, CTLFLAG_RD, 0, tmpstr);
 631
 632         if (softc->sysctl_tree == NULL) {
 633                 printf("cdsysctlinit: unable to allocate sysctl tree\n");
 634                 return;
 635         }
 636
 637         /*
 638          * Now register the sysctl handler, so the user can the value on
 639          * the fly.
 640          */
 641         SYSCTL_ADD_PROC(&softc->sysctl_ctx,SYSCTL_CHILDREN(softc->sysctl_tree),
 642                         OID_AUTO, "minimum_cmd_size", CTLTYPE_INT | CTLFLAG_RW,
 643                         &softc->minimum_command_size, 0, cdcmdsizesysctl, "I",
 644                         "Minimum CDB size");
 645 }
 646
 647 /*
 648  * We have a handler function for this so we can check the values when the
 649  * user sets them, instead of every time we look at them.
 650  */
 651 static int
 652 cdcmdsizesysctl(SYSCTL_HANDLER_ARGS)
 653 {
 654         int error, value;
 655
 656         value = *(int *)arg1;
 657
 658         error = sysctl_handle_int(oidp, &value, 0, req);
 659
 660         if ((error != 0) || (req->newptr == NULL))
 661                 return (error);
 662
 663         /*
 664          * The only real values we can have here are 6 or 10.  I don't
 665          * really forsee having 12 be an option at any time in the future.
 666          * So if the user sets something less than or equal to 6, we'll set
 667          * it to 6.  If he sets something greater than 6, we'll set it to 10.
 668          *
 669          * I suppose we could just return an error here for the wrong values,
 670          * but I don't think it's necessary to do so, as long as we can
 671          * determine the user's intent without too much trouble.
 672          */
 673         if (value < 6)
 674                 value = 6;
 675         else if (value > 6)
 676                 value = 10;
 677
 678         *(int *)arg1 = value;
 679
 680         return (0);
 681 }
 682
 683
 684 static cam_status
 685 cdregister(struct cam_periph *periph, void *arg)
 686 {
 687         struct cd_softc *softc;
 688         struct ccb_setasync csa;
 689         struct ccb_pathinq cpi;
 690         struct ccb_getdev *cgd;
 691         char tmpstr[80];
 692         caddr_t match;
 693
 694         cgd = (struct ccb_getdev *)arg;
 695         if (periph == NULL) {
 696                 printf("cdregister: periph was NULL!!\n");
 697                 return(CAM_REQ_CMP_ERR);
 698         }
 699         if (cgd == NULL) {
 700                 printf("cdregister: no getdev CCB, can't register device\n");
 701                 return(CAM_REQ_CMP_ERR);
 702         }
 703
 704         softc = malloc(sizeof(*softc), M_DEVBUF, M_INTWAIT | M_ZERO);
 705         LIST_INIT(&softc->pending_ccbs);
 706         STAILQ_INIT(&softc->mode_queue);
 707         softc->state = CD_STATE_PROBE;
 708         bufq_init(&softc->buf_queue);
 709         if (SID_IS_REMOVABLE(&cgd->inq_data))
 710                 softc->flags |= CD_FLAG_DISC_REMOVABLE;
 711         if ((cgd->inq_data.flags & SID_CmdQue) != 0)
 712                 softc->flags |= CD_FLAG_TAGGED_QUEUING;
 713
 714         periph->softc = softc;
 715         softc->periph = periph;
 716
 717         cam_extend_set(cdperiphs, periph->unit_number, periph);
 718
 719         /*
 720          * See if this device has any quirks.
 721          */
 722         match = cam_quirkmatch((caddr_t)&cgd->inq_data,
 723                                (caddr_t)cd_quirk_table,
 724                                sizeof(cd_quirk_table)/sizeof(*cd_quirk_table),
 725                                sizeof(*cd_quirk_table), scsi_inquiry_match);
 726
 727         if (match != NULL)
 728                 softc->quirks = ((struct cd_quirk_entry *)match)->quirks;
 729         else
 730                 softc->quirks = CD_Q_NONE;
 731
 732         /* Check if the SIM does not want 6 byte commands */
 733         xpt_setup_ccb(&cpi.ccb_h, periph->path, /*priority*/1);
 734         cpi.ccb_h.func_code = XPT_PATH_INQ;
 735         xpt_action((union ccb *)&cpi);
 736         if (cpi.ccb_h.status == CAM_REQ_CMP && (cpi.hba_misc & PIM_NO_6_BYTE))
 737                 softc->quirks |= CD_Q_10_BYTE_ONLY;
 738
 739         TASK_INIT(&softc->sysctl_task, 0, cdsysctlinit, periph);
 740
 741         /* The default is 6 byte commands, unless quirked otherwise */
 742         if (softc->quirks & CD_Q_10_BYTE_ONLY)
 743                 softc->minimum_command_size = 10;
 744         else
 745                 softc->minimum_command_size = 6;
 746
 747         /*
 748          * Load the user's default, if any.
 749          */
 750         snprintf(tmpstr, sizeof(tmpstr), "kern.cam.cd.%d.minimum_cmd_size",
 751                 periph->unit_number);
 752         TUNABLE_INT_FETCH(tmpstr, &softc->minimum_command_size);
 753
 754         /* 6 and 10 are the only permissible values here. */
 755         if (softc->minimum_command_size < 6)
 756                 softc->minimum_command_size = 6;
 757         else if (softc->minimum_command_size > 6)
 758                 softc->minimum_command_size = 10;
 759
 760         /*
 761          * We need to register the statistics structure for this device,
 762          * but we don't have the blocksize yet for it.  So, we register
 763          * the structure and indicate that we don't have the blocksize
 764          * yet.  Unlike other SCSI peripheral drivers, we explicitly set
 765          * the device type here to be CDROM, rather than just ORing in
 766          * the device type.  This is because this driver can attach to either
 767          * CDROM or WORM devices, and we want this peripheral driver to
 768          * show up in the devstat list as a CD peripheral driver, not a
 769          * WORM peripheral driver.  WORM drives will also have the WORM
 770          * driver attached to them.
 771          */
 772         devstat_add_entry(&softc->device_stats, "cd",
 773                           periph->unit_number, 0,
 774                           DEVSTAT_BS_UNAVAILABLE,
 775                           DEVSTAT_TYPE_CDROM | DEVSTAT_TYPE_IF_SCSI,
 776                           DEVSTAT_PRIORITY_CD);
 777         disk_create(periph->unit_number, &softc->disk,
 778                     DSO_ONESLICE | DSO_COMPATLABEL, &cd_cdevsw);
 779
 780         /*
 781          * Add an async callback so that we get
 782          * notified if this device goes away.
 783          */
 784         xpt_setup_ccb(&csa.ccb_h, periph->path,
 785                       /* priority */ 5);
 786         csa.ccb_h.func_code = XPT_SASYNC_CB;
 787         csa.event_enable = AC_SENT_BDR | AC_BUS_RESET | AC_LOST_DEVICE;
 788         csa.callback = cdasync;
 789         csa.callback_arg = periph;
 790         xpt_action((union ccb *)&csa);
 791
 792         /*
 793          * If the target lun is greater than 0, we most likely have a CD
 794          * changer device.  Check the quirk entries as well, though, just
 795          * in case someone has a CD tower with one lun per drive or
 796          * something like that.  Also, if we know up front that a
 797          * particular device is a changer, we can mark it as such starting
 798          * with lun 0, instead of lun 1.  It shouldn't be necessary to have
 799          * a quirk entry to define something as a changer, however.
 800          */
 801         if (((cgd->ccb_h.target_lun > 0)
 802           && ((softc->quirks & CD_Q_NO_CHANGER) == 0))
 803          || ((softc->quirks & CD_Q_CHANGER) != 0)) {
 804                 struct cdchanger *nchanger;
 805                 struct cam_periph *nperiph;
 806                 struct cam_path *path;
 807                 cam_status status;
 808                 int found;
 809
 810                 /* Set the changer flag in the current device's softc */
 811                 softc->flags |= CD_FLAG_CHANGER;
 812
 813                 if (num_changers == 0)
 814                         STAILQ_INIT(&changerq);
 815
 816                 /*
 817                  * Now, look around for an existing changer device with the
 818                  * same path and target ID as the current device.
 819                  */
 820                 for (found = 0,
 821                      nchanger = (struct cdchanger *)STAILQ_FIRST(&changerq);
 822                      nchanger != NULL;
 823                      nchanger = STAILQ_NEXT(nchanger, changer_links)){
 824                         if ((nchanger->path_id == cgd->ccb_h.path_id)
 825                          && (nchanger->target_id == cgd->ccb_h.target_id)) {
 826                                 found = 1;
 827                                 break;
 828                         }
 829                 }
 830
 831                 /*
 832                  * If we found a matching entry, just add this device to
 833                  * the list of devices on this changer.
 834                  */
 835                 if (found == 1) {
 836                         struct chdevlist *chlunhead;
 837
 838                         chlunhead = &nchanger->chluns;
 839
 840                         /*
 841                          * XXX KDM look at consolidating this code with the
 842                          * code below in a separate function.
 843                          */
 844
 845                         /*
 846                          * Create a path with lun id 0, and see if we can
 847                          * find a matching device
 848                          */
 849                         status = xpt_create_path(&path, /*periph*/ periph,
 850                                                  cgd->ccb_h.path_id,
 851                                                  cgd->ccb_h.target_id, 0);
 852
 853                         if ((status == CAM_REQ_CMP)
 854                          && ((nperiph = cam_periph_find(path, "cd")) != NULL)){
 855                                 struct cd_softc *nsoftc;
 856
 857                                 nsoftc = (struct cd_softc *)nperiph->softc;
 858
 859                                 if ((nsoftc->flags & CD_FLAG_CHANGER) == 0){
 860                                         nsoftc->flags |= CD_FLAG_CHANGER;
 861                                         nchanger->num_devices++;
 862                                         if (camq_resize(&nchanger->devq,
 863                                            nchanger->num_devices)!=CAM_REQ_CMP){
 864                                                 printf("cdregister: "
 865                                                        "camq_resize "
 866                                                        "failed, changer "
 867                                                        "support may "
 868                                                        "be messed up\n");
 869                                         }
 870                                         nsoftc->changer = nchanger;
 871                                         nsoftc->pinfo.index =CAM_UNQUEUED_INDEX;
 872
 873                                         STAILQ_INSERT_TAIL(&nchanger->chluns,
 874                                                           nsoftc,changer_links);
 875                                 }
 876                                 xpt_free_path(path);
 877                         } else if (status == CAM_REQ_CMP)
 878                                 xpt_free_path(path);
 879                         else {
 880                                 printf("cdregister: unable to allocate path\n"
 881                                        "cdregister: changer support may be "
 882                                        "broken\n");
 883                         }
 884
 885                         nchanger->num_devices++;
 886
 887                         softc->changer = nchanger;
 888                         softc->pinfo.index = CAM_UNQUEUED_INDEX;
 889
 890                         if (camq_resize(&nchanger->devq,
 891                             nchanger->num_devices) != CAM_REQ_CMP) {
 892                                 printf("cdregister: camq_resize "
 893                                        "failed, changer support may "
 894                                        "be messed up\n");
 895                         }
 896
 897                         STAILQ_INSERT_TAIL(chlunhead, softc, changer_links);
 898                 }
 899                 /*
 900                  * In this case, we don't already have an entry for this
 901                  * particular changer, so we need to create one, add it to
 902                  * the queue, and queue this device on the list for this
 903                  * changer.  Before we queue this device, however, we need
 904                  * to search for lun id 0 on this target, and add it to the
 905                  * queue first, if it exists.  (and if it hasn't already
 906                  * been marked as part of the changer.)
 907                  */
 908                 else {
 909                         nchanger = malloc(sizeof(struct cdchanger),
 910                                         M_DEVBUF, M_INTWAIT | M_ZERO);
 911                         callout_init(&nchanger->short_handle);
 912                         callout_init(&nchanger->long_handle);
 913                         if (camq_init(&nchanger->devq, 1) != 0) {
 914                                 softc->flags &= ~CD_FLAG_CHANGER;
 915                                 printf("cdregister: changer support "
 916                                        "disabled\n");
 917                                 goto cdregisterexit;
 918                         }
 919
 920                         num_changers++;
 921
 922                         nchanger->path_id = cgd->ccb_h.path_id;
 923                         nchanger->target_id = cgd->ccb_h.target_id;
 924
 925                         /* this is superfluous, but it makes things clearer */
 926                         nchanger->num_devices = 0;
 927
 928                         STAILQ_INIT(&nchanger->chluns);
 929
 930                         STAILQ_INSERT_TAIL(&changerq, nchanger,
 931                                            changer_links);
 932
 933                         /*
 934                          * Create a path with lun id 0, and see if we can
 935                          * find a matching device
 936                          */
 937                         status = xpt_create_path(&path, /*periph*/ periph,
 938                                                  cgd->ccb_h.path_id,
 939                                                  cgd->ccb_h.target_id, 0);
 940
 941                         /*
 942                          * If we were able to allocate the path, and if we
 943                          * find a matching device and it isn't already
 944                          * marked as part of a changer, then we add it to
 945                          * the current changer.
 946                          */
 947                         if ((status == CAM_REQ_CMP)
 948                          && ((nperiph = cam_periph_find(path, "cd")) != NULL)
 949                          && ((((struct cd_softc *)periph->softc)->flags &
 950                                CD_FLAG_CHANGER) == 0)) {
 951                                 struct cd_softc *nsoftc;
 952
 953                                 nsoftc = (struct cd_softc *)nperiph->softc;
 954
 955                                 nsoftc->flags |= CD_FLAG_CHANGER;
 956                                 nchanger->num_devices++;
 957                                 if (camq_resize(&nchanger->devq,
 958                                     nchanger->num_devices) != CAM_REQ_CMP) {
 959                                         printf("cdregister: camq_resize "
 960                                                "failed, changer support may "
 961                                                "be messed up\n");
 962                                 }
 963                                 nsoftc->changer = nchanger;
 964                                 nsoftc->pinfo.index = CAM_UNQUEUED_INDEX;
 965
 966                                 STAILQ_INSERT_TAIL(&nchanger->chluns,
 967                                                    nsoftc, changer_links);
 968                                 xpt_free_path(path);
 969                         } else if (status == CAM_REQ_CMP)
 970                                 xpt_free_path(path);
 971                         else {
 972                                 printf("cdregister: unable to allocate path\n"
 973                                        "cdregister: changer support may be "
 974                                        "broken\n");
 975                         }
 976
 977                         softc->changer = nchanger;
 978                         softc->pinfo.index = CAM_UNQUEUED_INDEX;
 979                         nchanger->num_devices++;
 980                         if (camq_resize(&nchanger->devq,
 981                             nchanger->num_devices) != CAM_REQ_CMP) {
 982                                 printf("cdregister: camq_resize "
 983                                        "failed, changer support may "
 984                                        "be messed up\n");
 985                         }
 986                         STAILQ_INSERT_TAIL(&nchanger->chluns, softc,
 987                                            changer_links);
 988                 }
 989         }
 990
 991 cdregisterexit:
 992
 993         /* Lock this peripheral until we are setup */
 994         /* Can't block */
 995         cam_periph_lock(periph, 0);
 996
 997         if ((softc->flags & CD_FLAG_CHANGER) == 0)
 998                 xpt_schedule(periph, /*priority*/5);
 999         else
1000                 cdschedule(periph, /*priority*/ 5);
1001
1002         return(CAM_REQ_CMP);
1003 }
1004
1005 static int
1006 cdopen(dev_t dev, int flags, int fmt, struct thread *td)
1007 {
1008         struct cam_periph *periph;
1009         struct cd_softc *softc;
1010         int unit, error;
1011
1012         unit = dkunit(dev);
1013         periph = cam_extend_get(cdperiphs, unit);
1014
1015         if (periph == NULL)
1016                 return (ENXIO);
1017
1018         softc = (struct cd_softc *)periph->softc;
1019
1020         /*
1021          * Grab a critical section and hold it until we lock the peripheral.
1022          */
1023         crit_enter();
1024         if (softc->flags & CD_FLAG_INVALID) {
1025                 crit_exit();
1026                 return(ENXIO);
1027         }
1028
1029         if ((error = cam_periph_lock(periph, PCATCH)) != 0) {
1030                 crit_exit();
1031                 return (error);
1032         }
1033
1034         crit_exit();
1035
1036         if (cam_periph_acquire(periph) != CAM_REQ_CMP)
1037                 return(ENXIO);
1038
1039         /*
1040          * Check for media, and set the appropriate flags.  We don't bail
1041          * if we don't have media, but then we don't allow anything but the
1042          * CDIOCEJECT/CDIOCCLOSE ioctls if there is no media.
1043          *
1044          * XXX KDM for now, we do fail the open if we don't have media.  We
1045          * can change this once we've figured out how to make the slice
1046          * code work well with media changing underneath it.
1047          */
1048         error = cdcheckmedia(periph);
1049
1050         if (error == 0)
1051                 softc->flags |= CD_FLAG_OPEN;
1052
1053         cam_periph_unlock(periph);
1054
1055         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("leaving cdopen\n"));
1056
1057         return (error);
1058 }
1059
1060 static int
1061 cdclose(dev_t dev, int flag, int fmt, struct thread *td)
1062 {
1063         struct  cam_periph *periph;
1064         struct  cd_softc *softc;
1065         int     unit, error;
1066
1067         unit = dkunit(dev);
1068         periph = cam_extend_get(cdperiphs, unit);
1069         if (periph == NULL)
1070                 return (ENXIO);
1071
1072         softc = (struct cd_softc *)periph->softc;
1073
1074         if ((error = cam_periph_lock(periph, 0)) != 0)
1075                 return (error);
1076
1077         if ((softc->flags & CD_FLAG_DISC_REMOVABLE) != 0)
1078                 cdprevent(periph, PR_ALLOW);
1079
1080         /*
1081          * Unconditionally set the dsopen() flags back to their default
1082          * state.
1083          */
1084         softc->disk.d_dsflags &= ~DSO_NOLABELS;
1085         softc->disk.d_dsflags |= DSO_COMPATLABEL;
1086
1087         /*
1088          * Since we're closing this CD, mark the blocksize as unavailable.
1089          * It will be marked as available when the CD is opened again.
1090          */
1091         softc->device_stats.flags |= DEVSTAT_BS_UNAVAILABLE;
1092
1093         /*
1094          * We'll check the media and toc again at the next open().
1095          */
1096         softc->flags &= ~(CD_FLAG_VALID_MEDIA|CD_FLAG_VALID_TOC);
1097
1098         softc->flags &= ~CD_FLAG_OPEN;
1099
1100         cam_periph_unlock(periph);
1101         cam_periph_release(periph);
1102
1103         return (0);
1104 }
1105
1106 static void
1107 cdshorttimeout(void *arg)
1108 {
1109         struct cdchanger *changer;
1110
1111         crit_enter();
1112
1113         changer = (struct cdchanger *)arg;
1114
1115         /* Always clear the short timeout flag, since that's what we're in */
1116         changer->flags &= ~CHANGER_SHORT_TMOUT_SCHED;
1117
1118         /*
1119          * Check to see if there is any more pending or outstanding I/O for
1120          * this device.  If not, move it out of the active slot.
1121          */
1122         if ((bufq_first(&changer->cur_device->buf_queue) == NULL)
1123          && (changer->cur_device->device_stats.busy_count == 0)) {
1124                 changer->flags |= CHANGER_MANUAL_CALL;
1125                 cdrunchangerqueue(changer);
1126         }
1127         crit_exit();
1128 }
1129
1130 /*
1131  * This is a wrapper for xpt_schedule.  It only applies to changers.
1132  */
1133 static void
1134 cdschedule(struct cam_periph *periph, int priority)
1135 {
1136         struct cd_softc *softc;
1137
1138         crit_enter();
1139
1140         softc = (struct cd_softc *)periph->softc;
1141
1142         /*
1143          * If this device isn't currently queued, and if it isn't
1144          * the active device, then we queue this device and run the
1145          * changer queue if there is no timeout scheduled to do it.
1146          * If this device is the active device, just schedule it
1147          * to run again.  If this device is queued, there should be
1148          * a timeout in place already that will make sure it runs.
1149          */
1150         if ((softc->pinfo.index == CAM_UNQUEUED_INDEX)
1151          && ((softc->flags & CD_FLAG_ACTIVE) == 0)) {
1152                 /*
1153                  * We don't do anything with the priority here.
1154                  * This is strictly a fifo queue.
1155                  */
1156                 softc->pinfo.priority = 1;
1157                 softc->pinfo.generation = ++softc->changer->devq.generation;
1158                 camq_insert(&softc->changer->devq, (cam_pinfo *)softc);
1159
1160                 /*
1161                  * Since we just put a device in the changer queue,
1162                  * check and see if there is a timeout scheduled for
1163                  * this changer.  If so, let the timeout handle
1164                  * switching this device into the active slot.  If
1165                  * not, manually call the timeout routine to
1166                  * bootstrap things.
1167                  */
1168                 if (((softc->changer->flags & CHANGER_TIMEOUT_SCHED)==0)
1169                  && ((softc->changer->flags & CHANGER_NEED_TIMEOUT)==0)
1170                  && ((softc->changer->flags & CHANGER_SHORT_TMOUT_SCHED)==0)){
1171                         softc->changer->flags |= CHANGER_MANUAL_CALL;
1172                         cdrunchangerqueue(softc->changer);
1173                 }
1174         } else if ((softc->flags & CD_FLAG_ACTIVE)
1175                 && ((softc->flags & CD_FLAG_SCHED_ON_COMP) == 0)) {
1176                 xpt_schedule(periph, priority);
1177         }
1178         crit_exit();
1179 }
1180
1181 static void
1182 cdrunchangerqueue(void *arg)
1183 {
1184         struct cd_softc *softc;
1185         struct cdchanger *changer;
1186         int called_from_timeout;
1187
1188         crit_enter();
1189
1190         changer = (struct cdchanger *)arg;
1191
1192         /*
1193          * If we have NOT been called from cdstrategy() or cddone(), and
1194          * instead from a timeout routine, go ahead and clear the
1195          * timeout flag.
1196          */
1197         if ((changer->flags & CHANGER_MANUAL_CALL) == 0) {
1198                 changer->flags &= ~CHANGER_TIMEOUT_SCHED;
1199                 called_from_timeout = 1;
1200         } else
1201                 called_from_timeout = 0;
1202
1203         /* Always clear the manual call flag */
1204         changer->flags &= ~CHANGER_MANUAL_CALL;
1205
1206         /* nothing to do if the queue is empty */
1207         if (changer->devq.entries <= 0) {
1208                 crit_exit();
1209                 return;
1210         }
1211
1212         /*
1213          * If the changer queue is frozen, that means we have an active
1214          * device.
1215          */
1216         if (changer->devq.qfrozen_cnt > 0) {
1217
1218                 if (changer->cur_device->device_stats.busy_count > 0) {
1219                         changer->cur_device->flags |= CD_FLAG_SCHED_ON_COMP;
1220                         changer->cur_device->bufs_left =
1221                                 changer->cur_device->device_stats.busy_count;
1222                         if (called_from_timeout) {
1223                                 callout_reset(&changer->long_handle,
1224                                         changer_max_busy_seconds * hz,
1225                                         cdrunchangerqueue, changer);
1226                                 changer->flags |= CHANGER_TIMEOUT_SCHED;
1227                         }
1228                         crit_exit();
1229                         return;
1230                 }
1231
1232                 /*
1233                  * We always need to reset the frozen count and clear the
1234                  * active flag.
1235                  */
1236                 changer->devq.qfrozen_cnt--;
1237                 changer->cur_device->flags &= ~CD_FLAG_ACTIVE;
1238                 changer->cur_device->flags &= ~CD_FLAG_SCHED_ON_COMP;
1239
1240                 /*
1241                  * Check to see whether the current device has any I/O left
1242                  * to do.  If so, requeue it at the end of the queue.  If
1243                  * not, there is no need to requeue it.
1244                  */
1245                 if (bufq_first(&changer->cur_device->buf_queue) != NULL) {
1246
1247                         changer->cur_device->pinfo.generation =
1248                                 ++changer->devq.generation;
1249                         camq_insert(&changer->devq,
1250                                 (cam_pinfo *)changer->cur_device);
1251                 }
1252         }
1253
1254         softc = (struct cd_softc *)camq_remove(&changer->devq, CAMQ_HEAD);
1255
1256         changer->cur_device = softc;
1257
1258         changer->devq.qfrozen_cnt++;
1259         softc->flags |= CD_FLAG_ACTIVE;
1260
1261         /* Just in case this device is waiting */
1262         wakeup(&softc->changer);
1263         xpt_schedule(softc->periph, /*priority*/ 1);
1264
1265         /*
1266          * Get rid of any pending timeouts, and set a flag to schedule new
1267          * ones so this device gets its full time quantum.
1268          */
1269         if (changer->flags & CHANGER_TIMEOUT_SCHED) {
1270                 callout_stop(&changer->long_handle);
1271                 changer->flags &= ~CHANGER_TIMEOUT_SCHED;
1272         }
1273
1274         if (changer->flags & CHANGER_SHORT_TMOUT_SCHED) {
1275                 callout_stop(&changer->short_handle);
1276                 changer->flags &= ~CHANGER_SHORT_TMOUT_SCHED;
1277         }
1278
1279         /*
1280          * We need to schedule timeouts, but we only do this after the
1281          * first transaction has completed.  This eliminates the changer
1282          * switch time.
1283          */
1284         changer->flags |= CHANGER_NEED_TIMEOUT;
1285
1286         crit_exit();
1287 }
1288
1289 static void
1290 cdchangerschedule(struct cd_softc *softc)
1291 {
1292         struct cdchanger *changer;
1293
1294         crit_enter();
1295
1296         changer = softc->changer;
1297
1298         /*
1299          * If this is a changer, and this is the current device,
1300          * and this device has at least the minimum time quantum to
1301          * run, see if we can switch it out.
1302          */
1303         if ((softc->flags & CD_FLAG_ACTIVE)
1304          && ((changer->flags & CHANGER_SHORT_TMOUT_SCHED) == 0)
1305          && ((changer->flags & CHANGER_NEED_TIMEOUT) == 0)) {
1306                 /*
1307                  * We try three things here.  The first is that we
1308                  * check to see whether the schedule on completion
1309                  * flag is set.  If it is, we decrement the number
1310                  * of buffers left, and if it's zero, we reschedule.
1311                  * Next, we check to see whether the pending buffer
1312                  * queue is empty and whether there are no
1313                  * outstanding transactions.  If so, we reschedule.
1314                  * Next, we see if the pending buffer queue is empty.
1315                  * If it is, we set the number of buffers left to
1316                  * the current active buffer count and set the
1317                  * schedule on complete flag.
1318                  */
1319                 if (softc->flags & CD_FLAG_SCHED_ON_COMP) {
1320                         if (--softc->bufs_left == 0) {
1321                                 softc->changer->flags |=
1322                                         CHANGER_MANUAL_CALL;
1323                                 softc->flags &= ~CD_FLAG_SCHED_ON_COMP;
1324                                 cdrunchangerqueue(softc->changer);
1325                         }
1326                 } else if ((bufq_first(&softc->buf_queue) == NULL)
1327                         && (softc->device_stats.busy_count == 0)) {
1328                         softc->changer->flags |= CHANGER_MANUAL_CALL;
1329                         cdrunchangerqueue(softc->changer);
1330                 }
1331         } else if ((softc->changer->flags & CHANGER_NEED_TIMEOUT)
1332                 && (softc->flags & CD_FLAG_ACTIVE)) {
1333
1334                 /*
1335                  * Now that the first transaction to this
1336                  * particular device has completed, we can go ahead
1337                  * and schedule our timeouts.
1338                  */
1339                 if ((changer->flags & CHANGER_TIMEOUT_SCHED) == 0) {
1340                         callout_reset(&changer->long_handle,
1341                                     changer_max_busy_seconds * hz,
1342                                     cdrunchangerqueue, changer);
1343                         changer->flags |= CHANGER_TIMEOUT_SCHED;
1344                 } else
1345                         printf("cdchangerschedule: already have a long"
1346                                " timeout!\n");
1347
1348                 if ((changer->flags & CHANGER_SHORT_TMOUT_SCHED) == 0) {
1349                         callout_reset(&changer->short_handle,
1350                                         changer_min_busy_seconds * hz,
1351                                         cdshorttimeout, changer);
1352                         changer->flags |= CHANGER_SHORT_TMOUT_SCHED;
1353                 } else
1354                         printf("cdchangerschedule: already have a short "
1355                                "timeout!\n");
1356
1357                 /*
1358                  * We just scheduled timeouts, no need to schedule
1359                  * more.
1360                  */
1361                 changer->flags &= ~CHANGER_NEED_TIMEOUT;
1362
1363         }
1364         crit_exit();
1365 }
1366
1367 static int
1368 cdrunccb(union ccb *ccb, int (*error_routine)(union ccb *ccb,
1369                                               u_int32_t cam_flags,
1370                                               u_int32_t sense_flags),
1371          u_int32_t cam_flags, u_int32_t sense_flags)
1372 {
1373         struct cd_softc *softc;
1374         struct cam_periph *periph;
1375         int error;
1376
1377         periph = xpt_path_periph(ccb->ccb_h.path);
1378         softc = (struct cd_softc *)periph->softc;
1379
1380         error = cam_periph_runccb(ccb, error_routine, cam_flags, sense_flags,
1381                                   &softc->device_stats);
1382
1383         if (softc->flags & CD_FLAG_CHANGER)
1384                 cdchangerschedule(softc);
1385
1386         return(error);
1387 }
1388
1389 static union ccb *
1390 cdgetccb(struct cam_periph *periph, u_int32_t priority)
1391 {
1392         struct cd_softc *softc;
1393
1394         softc = (struct cd_softc *)periph->softc;
1395
1396         if (softc->flags & CD_FLAG_CHANGER) {
1397                 crit_enter();
1398
1399                 /*
1400                  * This should work the first time this device is woken up,
1401                  * but just in case it doesn't, we use a while loop.
1402                  */
1403                 while ((softc->flags & CD_FLAG_ACTIVE) == 0) {
1404                         /*
1405                          * If this changer isn't already queued, queue it up.
1406                          */
1407                         if (softc->pinfo.index == CAM_UNQUEUED_INDEX) {
1408                                 softc->pinfo.priority = 1;
1409                                 softc->pinfo.generation =
1410                                         ++softc->changer->devq.generation;
1411                                 camq_insert(&softc->changer->devq,
1412                                             (cam_pinfo *)softc);
1413                         }
1414                         if (((softc->changer->flags & CHANGER_TIMEOUT_SCHED)==0)
1415                          && ((softc->changer->flags & CHANGER_NEED_TIMEOUT)==0)
1416                          && ((softc->changer->flags
1417                               & CHANGER_SHORT_TMOUT_SCHED)==0)) {
1418                                 softc->changer->flags |= CHANGER_MANUAL_CALL;
1419                                 cdrunchangerqueue(softc->changer);
1420                         } else
1421                                 tsleep(&softc->changer, 0, "cgticb", 0);
1422                 }
1423                 crit_exit();
1424         }
1425         return(cam_periph_getccb(periph, priority));
1426 }
1427
1428 /*
1429  * Actually translate the requested transfer into one the physical driver
1430  * can understand.  The transfer is described by a buf and will include
1431  * only one physical transfer.
1432  */
1433 static void
1434 cdstrategy(struct buf *bp)
1435 {
1436         struct cam_periph *periph;
1437         struct cd_softc *softc;
1438         u_int  unit, part;
1439
1440         unit = dkunit(bp->b_dev);
1441         part = dkpart(bp->b_dev);
1442         periph = cam_extend_get(cdperiphs, unit);
1443         if (periph == NULL) {
1444                 bp->b_error = ENXIO;
1445                 goto bad;
1446         }
1447
1448         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("entering cdstrategy\n"));
1449
1450         softc = (struct cd_softc *)periph->softc;
1451
1452         /*
1453          * Mask interrupts so that the pack cannot be invalidated until
1454          * after we are in the queue.  Otherwise, we might not properly
1455          * clean up one of the buffers.
1456          */
1457         crit_enter();
1458
1459         /*
1460          * If the device has been made invalid, error out
1461          */
1462         if ((softc->flags & CD_FLAG_INVALID)) {
1463                 crit_exit();
1464                 bp->b_error = ENXIO;
1465                 goto bad;
1466         }
1467
1468         /*
1469          * If we don't have valid media, look for it before trying to
1470          * schedule the I/O.
1471          */
1472         if ((softc->flags & CD_FLAG_VALID_MEDIA) == 0) {
1473                 int error;
1474
1475                 error = cdcheckmedia(periph);
1476                 if (error != 0) {
1477                         crit_exit();
1478                         bp->b_error = error;
1479                         goto bad;
1480                 }
1481         }
1482
1483         /*
1484          * Place it in the queue of disk activities for this disk
1485          */
1486         bufqdisksort(&softc->buf_queue, bp);
1487
1488         crit_exit();
1489
1490         /*
1491          * Schedule ourselves for performing the work.  We do things
1492          * differently for changers.
1493          */
1494         if ((softc->flags & CD_FLAG_CHANGER) == 0)
1495                 xpt_schedule(periph, /* XXX priority */1);
1496         else
1497                 cdschedule(periph, /* priority */ 1);
1498
1499         return;
1500 bad:
1501         bp->b_flags |= B_ERROR;
1502         /*
1503          * Correctly set the buf to indicate a completed xfer
1504          */
1505         bp->b_resid = bp->b_bcount;
1506         biodone(bp);
1507         return;
1508 }
1509
1510 static void
1511 cdstart(struct cam_periph *periph, union ccb *start_ccb)
1512 {
1513         struct cd_softc *softc;
1514         struct buf *bp;
1515         struct ccb_scsiio *csio;
1516         struct scsi_read_capacity_data *rcap;
1517
1518         softc = (struct cd_softc *)periph->softc;
1519
1520         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("entering cdstart\n"));
1521
1522         switch (softc->state) {
1523         case CD_STATE_NORMAL:
1524         {
1525                 crit_enter();
1526                 bp = bufq_first(&softc->buf_queue);
1527                 if (periph->immediate_priority <= periph->pinfo.priority) {
1528                         start_ccb->ccb_h.ccb_state = CD_CCB_WAITING;
1529
1530                         SLIST_INSERT_HEAD(&periph->ccb_list, &start_ccb->ccb_h,
1531                                           periph_links.sle);
1532                         periph->immediate_priority = CAM_PRIORITY_NONE;
1533                         crit_exit();
1534                         wakeup(&periph->ccb_list);
1535                 } else if (bp == NULL) {
1536                         crit_exit();
1537                         xpt_release_ccb(start_ccb);
1538                 } else {
1539                         bufq_remove(&softc->buf_queue, bp);
1540
1541                         devstat_start_transaction(&softc->device_stats);
1542
1543                         scsi_read_write(&start_ccb->csio,
1544                                         /*retries*/4,
1545                                         /* cbfcnp */ cddone,
1546                                         (bp->b_flags & B_ORDERED) != 0 ?
1547                                             MSG_ORDERED_Q_TAG :
1548                                             MSG_SIMPLE_Q_TAG,
1549                                         /* read */bp->b_flags & B_READ,
1550                                         /* byte2 */ 0,
1551                                         /* minimum_cmd_size */ 10,
1552                                         /* lba */ bp->b_pblkno,
1553                                         bp->b_bcount / softc->params.blksize,
1554                                         /* data_ptr */ bp->b_data,
1555                                         /* dxfer_len */ bp->b_bcount,
1556                                         /* sense_len */ SSD_FULL_SIZE,
1557                                         /* timeout */ 30000);
1558                         start_ccb->ccb_h.ccb_state = CD_CCB_BUFFER_IO;
1559
1560
1561                         /*
1562                          * Block out any asyncronous callbacks
1563                          * while we touch the pending ccb list.
1564                          */
1565                         LIST_INSERT_HEAD(&softc->pending_ccbs,
1566                                          &start_ccb->ccb_h, periph_links.le);
1567
1568                         /* We expect a unit attention from this device */
1569                         if ((softc->flags & CD_FLAG_RETRY_UA) != 0) {
1570                                 start_ccb->ccb_h.ccb_state |= CD_CCB_RETRY_UA;
1571                                 softc->flags &= ~CD_FLAG_RETRY_UA;
1572                         }
1573
1574                         start_ccb->ccb_h.ccb_bp = bp;
1575                         bp = bufq_first(&softc->buf_queue);
1576                         crit_exit();
1577
1578                         xpt_action(start_ccb);
1579                 }
1580                 if (bp != NULL) {
1581                         /* Have more work to do, so ensure we stay scheduled */
1582                         xpt_schedule(periph, /* XXX priority */1);
1583                 }
1584                 break;
1585         }
1586         case CD_STATE_PROBE:
1587         {
1588
1589                 rcap = malloc(sizeof(*rcap), M_TEMP, M_INTWAIT);
1590                 csio = &start_ccb->csio;
1591                 scsi_read_capacity(csio,
1592                                    /*retries*/1,
1593                                    cddone,
1594                                    MSG_SIMPLE_Q_TAG,
1595                                    rcap,
1596                                    SSD_FULL_SIZE,
1597                                    /*timeout*/20000);
1598                 start_ccb->ccb_h.ccb_bp = NULL;
1599                 start_ccb->ccb_h.ccb_state = CD_CCB_PROBE;
1600                 xpt_action(start_ccb);
1601                 break;
1602         }
1603         }
1604 }
1605
1606 static void
1607 cddone(struct cam_periph *periph, union ccb *done_ccb)
1608 {
1609         struct cd_softc *softc;
1610         struct ccb_scsiio *csio;
1611
1612         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("entering cddone\n"));
1613
1614         softc = (struct cd_softc *)periph->softc;
1615         csio = &done_ccb->csio;
1616
1617         switch (csio->ccb_h.ccb_state & CD_CCB_TYPE_MASK) {
1618         case CD_CCB_BUFFER_IO:
1619         {
1620                 struct buf      *bp;
1621                 int             error;
1622
1623                 bp = (struct buf *)done_ccb->ccb_h.ccb_bp;
1624                 error = 0;
1625
1626                 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1627                         int sf;
1628
1629                         if ((done_ccb->ccb_h.ccb_state & CD_CCB_RETRY_UA) != 0)
1630                                 sf = SF_RETRY_UA;
1631                         else
1632                                 sf = 0;
1633
1634                         /* Retry selection timeouts */
1635                         sf |= SF_RETRY_SELTO;
1636
1637                         if ((error = cderror(done_ccb, 0, sf)) == ERESTART) {
1638                                 /*
1639                                  * A retry was scheuled, so
1640                                  * just return.
1641                                  */
1642                                 return;
1643                         }
1644                 }
1645
1646                 if (error != 0) {
1647                         struct buf *q_bp;
1648
1649                         xpt_print_path(periph->path);
1650                         printf("cddone: got error %#x back\n", error);
1651                         crit_enter();
1652                         while ((q_bp = bufq_first(&softc->buf_queue)) != NULL) {
1653                                 bufq_remove(&softc->buf_queue, q_bp);
1654                                 q_bp->b_resid = q_bp->b_bcount;
1655                                 q_bp->b_error = EIO;
1656                                 q_bp->b_flags |= B_ERROR;
1657                                 biodone(q_bp);
1658                         }
1659                         crit_exit();
1660                         bp->b_resid = bp->b_bcount;
1661                         bp->b_error = error;
1662                         bp->b_flags |= B_ERROR;
1663                         cam_release_devq(done_ccb->ccb_h.path,
1664                                          /*relsim_flags*/0,
1665                                          /*reduction*/0,
1666                                          /*timeout*/0,
1667                                          /*getcount_only*/0);
1668
1669                 } else {
1670                         bp->b_resid = csio->resid;
1671                         bp->b_error = 0;
1672                         if (bp->b_resid != 0) {
1673                                 /* Short transfer ??? */
1674                                 bp->b_flags |= B_ERROR;
1675                         }
1676                 }
1677
1678                 /*
1679                  * Block out any asyncronous callbacks
1680                  * while we touch the pending ccb list.
1681                  */
1682                 crit_enter();
1683                 LIST_REMOVE(&done_ccb->ccb_h, periph_links.le);
1684                 crit_exit();
1685
1686                 if (softc->flags & CD_FLAG_CHANGER)
1687                         cdchangerschedule(softc);
1688
1689                 devstat_end_transaction_buf(&softc->device_stats, bp);
1690                 biodone(bp);
1691                 break;
1692         }
1693         case CD_CCB_PROBE:
1694         {
1695                 struct     scsi_read_capacity_data *rdcap;
1696                 char       announce_buf[120]; /*
1697                                                * Currently (9/30/97) the
1698                                                * longest possible announce
1699                                                * buffer is 108 bytes, for the
1700                                                * first error case below.
1701                                                * That is 39 bytes for the
1702                                                * basic string, 16 bytes for the
1703                                                * biggest sense key (hardware
1704                                                * error), 52 bytes for the
1705                                                * text of the largest sense
1706                                                * qualifier valid for a CDROM,
1707                                                * (0x72, 0x03 or 0x04,
1708                                                * 0x03), and one byte for the
1709                                                * null terminating character.
1710                                                * To allow for longer strings,
1711                                                * the announce buffer is 120
1712                                                * bytes.
1713                                                */
1714                 struct     cd_params *cdp;
1715
1716                 cdp = &softc->params;
1717
1718                 rdcap = (struct scsi_read_capacity_data *)csio->data_ptr;
1719
1720                 cdp->disksize = scsi_4btoul (rdcap->addr) + 1;
1721                 cdp->blksize = scsi_4btoul (rdcap->length);
1722
1723                 if ((csio->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP) {
1724
1725                         snprintf(announce_buf, sizeof(announce_buf),
1726                                 "cd present [%lu x %lu byte records]",
1727                                 cdp->disksize, (u_long)cdp->blksize);
1728
1729                 } else {
1730                         int     error;
1731                         /*
1732                          * Retry any UNIT ATTENTION type errors.  They
1733                          * are expected at boot.
1734                          */
1735                         error = cderror(done_ccb, 0, SF_RETRY_UA |
1736                                         SF_NO_PRINT | SF_RETRY_SELTO);
1737                         if (error == ERESTART) {
1738                                 /*
1739                                  * A retry was scheuled, so
1740                                  * just return.
1741                                  */
1742                                 return;
1743                         } else if (error != 0) {
1744
1745                                 struct scsi_sense_data *sense;
1746                                 int asc, ascq;
1747                                 int sense_key, error_code;
1748                                 int have_sense;
1749                                 cam_status status;
1750                                 struct ccb_getdev cgd;
1751
1752                                 /* Don't wedge this device's queue */
1753                                 cam_release_devq(done_ccb->ccb_h.path,
1754                                                  /*relsim_flags*/0,
1755                                                  /*reduction*/0,
1756                                                  /*timeout*/0,
1757                                                  /*getcount_only*/0);
1758
1759                                 status = done_ccb->ccb_h.status;
1760
1761                                 xpt_setup_ccb(&cgd.ccb_h,
1762                                               done_ccb->ccb_h.path,
1763                                               /* priority */ 1);
1764                                 cgd.ccb_h.func_code = XPT_GDEV_TYPE;
1765                                 xpt_action((union ccb *)&cgd);
1766
1767                                 if (((csio->ccb_h.flags & CAM_SENSE_PHYS) != 0)
1768                                  || ((csio->ccb_h.flags & CAM_SENSE_PTR) != 0)
1769                                  || ((status & CAM_AUTOSNS_VALID) == 0))
1770                                         have_sense = FALSE;
1771                                 else
1772                                         have_sense = TRUE;
1773
1774                                 if (have_sense) {
1775                                         sense = &csio->sense_data;
1776                                         scsi_extract_sense(sense, &error_code,
1777                                                            &sense_key,
1778                                                            &asc, &ascq);
1779                                 }
1780                                 /*
1781                                  * Attach to anything that claims to be a
1782                                  * CDROM or WORM device, as long as it
1783                                  * doesn't return a "Logical unit not
1784                                  * supported" (0x25) error.
1785                                  */
1786                                 if ((have_sense) && (asc != 0x25)
1787                                  && (error_code == SSD_CURRENT_ERROR))
1788                                         snprintf(announce_buf,
1789                                             sizeof(announce_buf),
1790                                                 "Attempt to query device "
1791                                                 "size failed: %s, %s",
1792                                                 scsi_sense_key_text[sense_key],
1793                                                 scsi_sense_desc(asc,ascq,
1794                                                                 &cgd.inq_data));
1795                                 else if ((have_sense == 0)
1796                                       && ((status & CAM_STATUS_MASK) ==
1797                                            CAM_SCSI_STATUS_ERROR)
1798                                       && (csio->scsi_status ==
1799                                           SCSI_STATUS_BUSY)) {
1800                                         snprintf(announce_buf,
1801                                             sizeof(announce_buf),
1802                                             "Attempt to query device "
1803                                             "size failed: SCSI status: BUSY");
1804                                 } else if (SID_TYPE(&cgd.inq_data) == T_CDROM) {
1805                                         /*
1806                                          * We only print out an error for
1807                                          * CDROM type devices.  For WORM
1808                                          * devices, we don't print out an
1809                                          * error since a few WORM devices
1810                                          * don't support CDROM commands.
1811                                          * If we have sense information, go
1812                                          * ahead and print it out.
1813                                          * Otherwise, just say that we
1814                                          * couldn't attach.
1815                                          */
1816
1817                                         /*
1818                                          * Just print out the error, not
1819                                          * the full probe message, when we
1820                                          * don't attach.
1821                                          */
1822                                         if (have_sense)
1823                                                 scsi_sense_print(
1824                                                         &done_ccb->csio);
1825                                         else {
1826                                                 xpt_print_path(periph->path);
1827                                                 printf("got CAM status %#x\n",
1828                                                        done_ccb->ccb_h.status);
1829                                         }
1830                                         xpt_print_path(periph->path);
1831                                         printf("fatal error, failed"
1832                                                " to attach to device\n");
1833
1834                                         /*
1835                                          * Invalidate this peripheral.
1836                                          */
1837                                         cam_periph_invalidate(periph);
1838
1839                                         announce_buf[0] = '\0';
1840                                 } else {
1841
1842                                         /*
1843                                          * Invalidate this peripheral.
1844                                          */
1845                                         cam_periph_invalidate(periph);
1846                                         announce_buf[0] = '\0';
1847                                 }
1848                         }
1849                 }
1850                 free(rdcap, M_TEMP);
1851                 if (announce_buf[0] != '\0') {
1852                         xpt_announce_periph(periph, announce_buf);
1853                         if (softc->flags & CD_FLAG_CHANGER)
1854                                 cdchangerschedule(softc);
1855                         /*
1856                          * Create our sysctl variables, now that we know
1857                          * we have successfully attached.
1858                          */
1859                         taskqueue_enqueue(taskqueue_thread[mycpuid],
1860                             &softc->sysctl_task);
1861                 }
1862                 softc->state = CD_STATE_NORMAL;
1863                 /*
1864                  * Since our peripheral may be invalidated by an error
1865                  * above or an external event, we must release our CCB
1866                  * before releasing the probe lock on the peripheral.
1867                  * The peripheral will only go away once the last lock
1868                  * is removed, and we need it around for the CCB release
1869                  * operation.
1870                  */
1871                 xpt_release_ccb(done_ccb);
1872                 cam_periph_unlock(periph);
1873                 return;
1874         }
1875         case CD_CCB_WAITING:
1876         {
1877                 /* Caller will release the CCB */
1878                 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE,
1879                           ("trying to wakeup ccbwait\n"));
1880
1881                 wakeup(&done_ccb->ccb_h.cbfcnp);
1882                 return;
1883         }
1884         default:
1885                 break;
1886         }
1887         xpt_release_ccb(done_ccb);
1888 }
1889
1890 static union cd_pages *
1891 cdgetpage(struct cd_mode_params *mode_params)
1892 {
1893         union cd_pages *page;
1894
1895         if (mode_params->cdb_size == 10)
1896                 page = (union cd_pages *)find_mode_page_10(
1897                         (struct scsi_mode_header_10 *)mode_params->mode_buf);
1898         else
1899                 page = (union cd_pages *)find_mode_page_6(
1900                         (struct scsi_mode_header_6 *)mode_params->mode_buf);
1901
1902         return (page);
1903 }
1904
1905 static int
1906 cdgetpagesize(int page_num)
1907 {
1908         int i;
1909
1910         for (i = 0; i < (sizeof(cd_page_size_table)/
1911             sizeof(cd_page_size_table[0])); i++) {
1912                 if (cd_page_size_table[i].page == page_num)
1913                         return (cd_page_size_table[i].page_size);
1914         }
1915         return (-1);
1916 }
1917
1918 static int
1919 cdioctl(dev_t dev, u_long cmd, caddr_t addr, int flag, struct thread *td)
1920 {
1921
1922         struct  cam_periph *periph;
1923         struct  cd_softc *softc;
1924         int     error, unit;
1925
1926         unit = dkunit(dev);
1927
1928         periph = cam_extend_get(cdperiphs, unit);
1929         if (periph == NULL)
1930                 return(ENXIO);
1931
1932         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("entering cdioctl\n"));
1933
1934         softc = (struct cd_softc *)periph->softc;
1935
1936         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE,
1937                   ("trying to do ioctl %#lx\n", cmd));
1938
1939         error = cam_periph_lock(periph, PCATCH);
1940
1941         if (error != 0)
1942                 return(error);
1943
1944         /*
1945          * If we don't have media loaded, check for it.  If still don't
1946          * have media loaded, we can only do a load or eject.
1947          */
1948         if (((softc->flags & CD_FLAG_VALID_MEDIA) == 0)
1949             && ((cmd != CDIOCCLOSE)
1950             && (cmd != CDIOCEJECT))) {
1951                 error = cdcheckmedia(periph);
1952                 if (error != 0) {
1953                         cam_periph_unlock(periph);
1954                         return (error);
1955                 }
1956         }
1957
1958         switch (cmd) {
1959
1960         case CDIOCPLAYTRACKS:
1961                 {
1962                         struct ioc_play_track *args
1963                             = (struct ioc_play_track *) addr;
1964                         struct cd_mode_params params;
1965                         union cd_pages *page;
1966
1967                         params.alloc_len = sizeof(union cd_mode_data_6_10);
1968                         params.mode_buf = malloc(params.alloc_len, M_TEMP,
1969                                                  M_WAITOK | M_ZERO);
1970
1971                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
1972                                   ("trying to do CDIOCPLAYTRACKS\n"));
1973
1974                         error = cdgetmode(periph, &params, AUDIO_PAGE);
1975                         if (error) {
1976                                 free(params.mode_buf, M_TEMP);
1977                                 break;
1978                         }
1979                         page = cdgetpage(&params);
1980
1981                         page->audio.flags &= ~CD_PA_SOTC;
1982                         page->audio.flags |= CD_PA_IMMED;
1983                         error = cdsetmode(periph, &params);
1984                         free(params.mode_buf, M_TEMP);
1985                         if (error)
1986                                 break;
1987
1988                         /*
1989                          * This was originally implemented with the PLAY
1990                          * AUDIO TRACK INDEX command, but that command was
1991                          * deprecated after SCSI-2.  Most (all?) SCSI CDROM
1992                          * drives support it but ATAPI and ATAPI-derivative
1993                          * drives don't seem to support it.  So we keep a
1994                          * cache of the table of contents and translate
1995                          * track numbers to MSF format.
1996                          */
1997                         if (softc->flags & CD_FLAG_VALID_TOC) {
1998                                 union msf_lba *sentry, *eentry;
1999                                 int st, et;
2000
2001                                 if (args->end_track <
2002                                     softc->toc.header.ending_track + 1)
2003                                         args->end_track++;
2004                                 if (args->end_track >
2005                                     softc->toc.header.ending_track + 1)
2006                                         args->end_track =
2007                                             softc->toc.header.ending_track + 1;
2008                                 st = args->start_track -
2009                                         softc->toc.header.starting_track;
2010                                 et = args->end_track -
2011                                         softc->toc.header.starting_track;
2012                                 if ((st < 0)
2013                                  || (et < 0)
2014                                  || (st > (softc->toc.header.ending_track -
2015                                      softc->toc.header.starting_track))) {
2016                                         error = EINVAL;
2017                                         break;
2018                                 }
2019                                 sentry = &softc->toc.entries[st].addr;
2020                                 eentry = &softc->toc.entries[et].addr;
2021                                 error = cdplaymsf(periph,
2022                                                   sentry->msf.minute,
2023                                                   sentry->msf.second,
2024                                                   sentry->msf.frame,
2025                                                   eentry->msf.minute,
2026                                                   eentry->msf.second,
2027                                                   eentry->msf.frame);
2028                         } else {
2029                                 /*
2030                                  * If we don't have a valid TOC, try the
2031                                  * play track index command.  It is part of
2032                                  * the SCSI-2 spec, but was removed in the
2033                                  * MMC specs.  ATAPI and ATAPI-derived
2034                                  * drives don't support it.
2035                                  */
2036                                 if (softc->quirks & CD_Q_BCD_TRACKS) {
2037                                         args->start_track =
2038                                                 bin2bcd(args->start_track);
2039                                         args->end_track =
2040                                                 bin2bcd(args->end_track);
2041                                 }
2042                                 error = cdplaytracks(periph,
2043                                                      args->start_track,
2044                                                      args->start_index,
2045                                                      args->end_track,
2046                                                      args->end_index);
2047                         }
2048                 }
2049                 break;
2050         case CDIOCPLAYMSF:
2051                 {
2052                         struct ioc_play_msf *args
2053                                 = (struct ioc_play_msf *) addr;
2054                         struct cd_mode_params params;
2055                         union cd_pages *page;
2056
2057                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2058                         params.mode_buf = malloc(params.alloc_len, M_TEMP,
2059                                                  M_WAITOK | M_ZERO);
2060
2061                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2062                                   ("trying to do CDIOCPLAYMSF\n"));
2063
2064                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2065                         if (error) {
2066                                 free(params.mode_buf, M_TEMP);
2067                                 break;
2068                         }
2069                         page = cdgetpage(&params);
2070
2071                         page->audio.flags &= ~CD_PA_SOTC;
2072                         page->audio.flags |= CD_PA_IMMED;
2073                         error = cdsetmode(periph, &params);
2074                         free(params.mode_buf, M_TEMP);
2075                         if (error)
2076                                 break;
2077                         error = cdplaymsf(periph,
2078                                           args->start_m,
2079                                           args->start_s,
2080                                           args->start_f,
2081                                           args->end_m,
2082                                           args->end_s,
2083                                           args->end_f);
2084                 }
2085                 break;
2086         case CDIOCPLAYBLOCKS:
2087                 {
2088                         struct ioc_play_blocks *args
2089                                 = (struct ioc_play_blocks *) addr;
2090                         struct cd_mode_params params;
2091                         union cd_pages *page;
2092
2093                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2094                                   ("trying to do CDIOCPLAYBLOCKS\n"));
2095
2096                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2097                         params.mode_buf = malloc(params.alloc_len, M_TEMP,
2098                                                  M_WAITOK | M_ZERO);
2099
2100                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2101                         if (error) {
2102                                 free(params.mode_buf, M_TEMP);
2103                                 break;
2104                         }
2105                         page = cdgetpage(&params);
2106
2107                         page->audio.flags &= ~CD_PA_SOTC;
2108                         page->audio.flags |= CD_PA_IMMED;
2109                         error = cdsetmode(periph, &params);
2110                         free(params.mode_buf, M_TEMP);
2111                         if (error)
2112                                 break;
2113                         error = cdplay(periph, args->blk, args->len);
2114                 }
2115                 break;
2116         case CDIOCREADSUBCHANNEL:
2117                 {
2118                         struct ioc_read_subchannel *args
2119                                 = (struct ioc_read_subchannel *) addr;
2120                         struct cd_sub_channel_info *data;
2121                         u_int32_t len = args->data_len;
2122
2123                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2124                                   ("trying to do CDIOCREADSUBCHANNEL\n"));
2125
2126                         data = malloc(sizeof(struct cd_sub_channel_info),
2127                                       M_TEMP, M_WAITOK);
2128
2129                         if ((len > sizeof(struct cd_sub_channel_info)) ||
2130                             (len < sizeof(struct cd_sub_channel_header))) {
2131                                 printf(
2132                                         "scsi_cd: cdioctl: "
2133                                         "cdioreadsubchannel: error, len=%d\n",
2134                                         len);
2135                                 error = EINVAL;
2136                                 free(data, M_TEMP);
2137                                 break;
2138                         }
2139
2140                         if (softc->quirks & CD_Q_BCD_TRACKS)
2141                                 args->track = bin2bcd(args->track);
2142
2143                         error = cdreadsubchannel(periph, args->address_format,
2144                                 args->data_format, args->track, data, len);
2145
2146                         if (error) {
2147                                 free(data, M_TEMP);
2148                                 break;
2149                         }
2150                         if (softc->quirks & CD_Q_BCD_TRACKS)
2151                                 data->what.track_info.track_number =
2152                                     bcd2bin(data->what.track_info.track_number);
2153                         len = min(len, ((data->header.data_len[0] << 8) +
2154                                 data->header.data_len[1] +
2155                                 sizeof(struct cd_sub_channel_header)));
2156                         if (copyout(data, args->data, len) != 0) {
2157                                 error = EFAULT;
2158                         }
2159                         free(data, M_TEMP);
2160                 }
2161                 break;
2162
2163         case CDIOREADTOCHEADER:
2164                 {
2165                         struct ioc_toc_header *th;
2166
2167                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2168                                   ("trying to do CDIOREADTOCHEADER\n"));
2169
2170                         th = malloc(sizeof(struct ioc_toc_header), M_TEMP,
2171                                     M_WAITOK);
2172                         error = cdreadtoc(periph, 0, 0, (u_int8_t *)th,
2173                                           sizeof (*th), /*sense_flags*/0);
2174                         if (error) {
2175                                 free(th, M_TEMP);
2176                                 break;
2177                         }
2178                         if (softc->quirks & CD_Q_BCD_TRACKS) {
2179                                 /* we are going to have to convert the BCD
2180                                  * encoding on the cd to what is expected
2181                                  */
2182                                 th->starting_track =
2183                                         bcd2bin(th->starting_track);
2184                                 th->ending_track = bcd2bin(th->ending_track);
2185                         }
2186                         th->len = ntohs(th->len);
2187                         bcopy(th, addr, sizeof(*th));
2188                         free(th, M_TEMP);
2189                 }
2190                 break;
2191         case CDIOREADTOCENTRYS:
2192                 {
2193                         struct cd_tocdata *data;
2194                         struct cd_toc_single *lead;
2195                         struct ioc_read_toc_entry *te =
2196                                 (struct ioc_read_toc_entry *) addr;
2197                         struct ioc_toc_header *th;
2198                         u_int32_t len, readlen, idx, num;
2199                         u_int32_t starting_track = te->starting_track;
2200
2201                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2202                                   ("trying to do CDIOREADTOCENTRYS\n"));
2203
2204                         data = malloc(sizeof(*data), M_TEMP, M_WAITOK);
2205                         lead = malloc(sizeof(*lead), M_TEMP, M_WAITOK);
2206
2207                         if (te->data_len < sizeof(struct cd_toc_entry)
2208                          || (te->data_len % sizeof(struct cd_toc_entry)) != 0
2209                          || (te->address_format != CD_MSF_FORMAT
2210                           && te->address_format != CD_LBA_FORMAT)) {
2211                                 error = EINVAL;
2212                                 printf("scsi_cd: error in readtocentries, "
2213                                        "returning EINVAL\n");
2214                                 free(data, M_TEMP);
2215                                 free(lead, M_TEMP);
2216                                 break;
2217                         }
2218
2219                         th = &data->header;
2220                         error = cdreadtoc(periph, 0, 0, (u_int8_t *)th,
2221                                           sizeof (*th), /*sense_flags*/0);
2222                         if (error) {
2223                                 free(data, M_TEMP);
2224                                 free(lead, M_TEMP);
2225                                 break;
2226                         }
2227
2228                         if (softc->quirks & CD_Q_BCD_TRACKS) {
2229                                 /* we are going to have to convert the BCD
2230                                  * encoding on the cd to what is expected
2231                                  */
2232                                 th->starting_track =
2233                                     bcd2bin(th->starting_track);
2234                                 th->ending_track = bcd2bin(th->ending_track);
2235                         }
2236
2237                         if (starting_track == 0)
2238                                 starting_track = th->starting_track;
2239                         else if (starting_track == LEADOUT)
2240                                 starting_track = th->ending_track + 1;
2241                         else if (starting_track < th->starting_track ||
2242                                  starting_track > th->ending_track + 1) {
2243                                 printf("scsi_cd: error in readtocentries, "
2244                                        "returning EINVAL\n");
2245                                 free(data, M_TEMP);
2246                                 free(lead, M_TEMP);
2247                                 error = EINVAL;
2248                                 break;
2249                         }
2250
2251                         /* calculate reading length without leadout entry */
2252                         readlen = (th->ending_track - starting_track + 1) *
2253                                   sizeof(struct cd_toc_entry);
2254
2255                         /* and with leadout entry */
2256                         len = readlen + sizeof(struct cd_toc_entry);
2257                         if (te->data_len < len) {
2258                                 len = te->data_len;
2259                                 if (readlen > len)
2260                                         readlen = len;
2261                         }
2262                         if (len > sizeof(data->entries)) {
2263                                 printf("scsi_cd: error in readtocentries, "
2264                                        "returning EINVAL\n");
2265                                 error = EINVAL;
2266                                 free(data, M_TEMP);
2267                                 free(lead, M_TEMP);
2268                                 break;
2269                         }
2270                         num = len / sizeof(struct cd_toc_entry);
2271
2272                         if (readlen > 0) {
2273                                 error = cdreadtoc(periph, te->address_format,
2274                                                   starting_track,
2275                                                   (u_int8_t *)data,
2276                                                   readlen + sizeof (*th),
2277                                                   /*sense_flags*/0);
2278                                 if (error) {
2279                                         free(data, M_TEMP);
2280                                         free(lead, M_TEMP);
2281                                         break;
2282                                 }
2283                         }
2284
2285                         /* make leadout entry if needed */
2286                         idx = starting_track + num - 1;
2287                         if (softc->quirks & CD_Q_BCD_TRACKS)
2288                                 th->ending_track = bcd2bin(th->ending_track);
2289                         if (idx == th->ending_track + 1) {
2290                                 error = cdreadtoc(periph, te->address_format,
2291                                                   LEADOUT, (u_int8_t *)lead,
2292                                                   sizeof(*lead),
2293                                                   /*sense_flags*/0);
2294                                 if (error) {
2295                                         free(data, M_TEMP);
2296                                         free(lead, M_TEMP);
2297                                         break;
2298                                 }
2299                                 data->entries[idx - starting_track] =
2300                                         lead->entry;
2301                         }
2302                         if (softc->quirks & CD_Q_BCD_TRACKS) {
2303                                 for (idx = 0; idx < num - 1; idx++) {
2304                                         data->entries[idx].track =
2305                                             bcd2bin(data->entries[idx].track);
2306                                 }
2307                         }
2308
2309                         error = copyout(data->entries, te->data, len);
2310                         free(data, M_TEMP);
2311                         free(lead, M_TEMP);
2312                 }
2313                 break;
2314         case CDIOREADTOCENTRY:
2315                 {
2316                         struct cd_toc_single *data;
2317                         struct ioc_read_toc_single_entry *te =
2318                                 (struct ioc_read_toc_single_entry *) addr;
2319                         struct ioc_toc_header *th;
2320                         u_int32_t track;
2321
2322                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2323                                   ("trying to do CDIOREADTOCENTRY\n"));
2324
2325                         data = malloc(sizeof(*data), M_TEMP, M_WAITOK);
2326
2327                         if (te->address_format != CD_MSF_FORMAT
2328                             && te->address_format != CD_LBA_FORMAT) {
2329                                 printf("error in readtocentry, "
2330                                        " returning EINVAL\n");
2331                                 free(data, M_TEMP);
2332                                 error = EINVAL;
2333                                 break;
2334                         }
2335
2336                         th = &data->header;
2337                         error = cdreadtoc(periph, 0, 0, (u_int8_t *)th,
2338                                           sizeof (*th), /*sense_flags*/0);
2339                         if (error) {
2340                                 free(data, M_TEMP);
2341                                 break;
2342                         }
2343
2344                         if (softc->quirks & CD_Q_BCD_TRACKS) {
2345                                 /* we are going to have to convert the BCD
2346                                  * encoding on the cd to what is expected
2347                                  */
2348                                 th->starting_track =
2349                                     bcd2bin(th->starting_track);
2350                                 th->ending_track = bcd2bin(th->ending_track);
2351                         }
2352                         track = te->track;
2353                         if (track == 0)
2354                                 track = th->starting_track;
2355                         else if (track == LEADOUT)
2356                                 /* OK */;
2357                         else if (track < th->starting_track ||
2358                                  track > th->ending_track + 1) {
2359                                 printf("error in readtocentry, "
2360                                        " returning EINVAL\n");
2361                                 free(data, M_TEMP);
2362                                 error = EINVAL;
2363                                 break;
2364                         }
2365
2366                         error = cdreadtoc(periph, te->address_format, track,
2367                                           (u_int8_t *)data, sizeof(*data),
2368                                           /*sense_flags*/0);
2369                         if (error) {
2370                                 free(data, M_TEMP);
2371                                 break;
2372                         }
2373
2374                         if (softc->quirks & CD_Q_BCD_TRACKS)
2375                                 data->entry.track = bcd2bin(data->entry.track);
2376                         bcopy(&data->entry, &te->entry,
2377                               sizeof(struct cd_toc_entry));
2378                         free(data, M_TEMP);
2379                 }
2380                 break;
2381         case CDIOCSETPATCH:
2382                 {
2383                         struct ioc_patch *arg = (struct ioc_patch *)addr;
2384                         struct cd_mode_params params;
2385                         union cd_pages *page;
2386
2387                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2388                                   ("trying to do CDIOCSETPATCH\n"));
2389
2390                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2391                         params.mode_buf = malloc(params.alloc_len, M_TEMP,
2392                                                  M_WAITOK | M_ZERO);
2393                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2394                         if (error) {
2395                                 free(params.mode_buf, M_TEMP);
2396                                 break;
2397                         }
2398                         page = cdgetpage(&params);
2399
2400                         page->audio.port[LEFT_PORT].channels =
2401                                 arg->patch[0];
2402                         page->audio.port[RIGHT_PORT].channels =
2403                                 arg->patch[1];
2404                         page->audio.port[2].channels = arg->patch[2];
2405                         page->audio.port[3].channels = arg->patch[3];
2406                         error = cdsetmode(periph, &params);
2407                         free(params.mode_buf, M_TEMP);
2408                 }
2409                 break;
2410         case CDIOCGETVOL:
2411                 {
2412                         struct ioc_vol *arg = (struct ioc_vol *) addr;
2413                         struct cd_mode_params params;
2414                         union cd_pages *page;
2415
2416                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2417                                   ("trying to do CDIOCGETVOL\n"));
2418
2419                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2420                         params.mode_buf = malloc(params.alloc_len, M_TEMP,
2421                                                  M_WAITOK | M_ZERO);
2422                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2423                         if (error) {
2424                                 free(params.mode_buf, M_TEMP);
2425                                 break;
2426                         }
2427                         page = cdgetpage(&params);
2428
2429                         arg->vol[LEFT_PORT] =
2430                                 page->audio.port[LEFT_PORT].volume;
2431                         arg->vol[RIGHT_PORT] =
2432                                 page->audio.port[RIGHT_PORT].volume;
2433                         arg->vol[2] = page->audio.port[2].volume;
2434                         arg->vol[3] = page->audio.port[3].volume;
2435                         free(params.mode_buf, M_TEMP);
2436                 }
2437                 break;
2438         case CDIOCSETVOL:
2439                 {
2440                         struct ioc_vol *arg = (struct ioc_vol *) addr;
2441                         struct cd_mode_params params;
2442                         union cd_pages *page;
2443
2444                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2445                                   ("trying to do CDIOCSETVOL\n"));
2446
2447                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2448                         params.mode_buf = malloc(params.alloc_len, M_TEMP,
2449                                                  M_WAITOK | M_ZERO);
2450                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2451                         if (error) {
2452                                 free(params.mode_buf, M_TEMP);
2453                                 break;
2454                         }
2455                         page = cdgetpage(&params);
2456
2457                         page->audio.port[LEFT_PORT].channels = CHANNEL_0;
2458                         page->audio.port[LEFT_PORT].volume =
2459                                 arg->vol[LEFT_PORT];
2460                         page->audio.port[RIGHT_PORT].channels = CHANNEL_1;
2461                         page->audio.port[RIGHT_PORT].volume =
2462                                 arg->vol[RIGHT_PORT];
2463                         page->audio.port[2].volume = arg->vol[2];
2464                         page->audio.port[3].volume = arg->vol[3];
2465                         error = cdsetmode(periph, &params);
2466                         free(params.mode_buf, M_TEMP);
2467                 }
2468                 break;
2469         case CDIOCSETMONO:
2470                 {
2471                         struct cd_mode_params params;
2472                         union cd_pages *page;
2473
2474                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2475                                   ("trying to do CDIOCSETMONO\n"));
2476
2477                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2478                         params.mode_buf = malloc(params.alloc_len, M_TEMP,
2479                                                  M_WAITOK | M_ZERO);
2480                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2481                         if (error) {
2482                                 free(params.mode_buf, M_TEMP);
2483                                 break;
2484                         }
2485                         page = cdgetpage(&params);
2486
2487                         page->audio.port[LEFT_PORT].channels =
2488                                 LEFT_CHANNEL | RIGHT_CHANNEL;
2489                         page->audio.port[RIGHT_PORT].channels =
2490                                 LEFT_CHANNEL | RIGHT_CHANNEL;
2491                         page->audio.port[2].channels = 0;
2492                         page->audio.port[3].channels = 0;
2493                         error = cdsetmode(periph, &params);
2494                         free(params.mode_buf, M_TEMP);
2495                 }
2496                 break;
2497         case CDIOCSETSTEREO:
2498                 {
2499                         struct cd_mode_params params;
2500                         union cd_pages *page;
2501
2502                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2503                                   ("trying to do CDIOCSETSTEREO\n"));
2504
2505                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2506                         params.mode_buf = malloc(params.alloc_len, M_TEMP,
2507                                                  M_WAITOK | M_ZERO);
2508                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2509                         if (error) {
2510                                 free(params.mode_buf, M_TEMP);
2511                                 break;
2512                         }
2513                         page = cdgetpage(&params);
2514
2515                         page->audio.port[LEFT_PORT].channels =
2516                                 LEFT_CHANNEL;
2517                         page->audio.port[RIGHT_PORT].channels =
2518                                 RIGHT_CHANNEL;
2519                         page->audio.port[2].channels = 0;
2520                         page->audio.port[3].channels = 0;
2521                         error = cdsetmode(periph, &params);
2522                         free(params.mode_buf, M_TEMP);
2523                 }
2524                 break;
2525         case CDIOCSETMUTE:
2526                 {
2527                         struct cd_mode_params params;
2528                         union cd_pages *page;
2529
2530                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2531                                   ("trying to do CDIOCSETMUTE\n"));
2532
2533                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2534                         params.mode_buf = malloc(params.alloc_len, M_TEMP,
2535                                                  M_WAITOK | M_ZERO);
2536                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2537                         if (error) {
2538                                 free(&params, M_TEMP);
2539                                 break;
2540                         }
2541                         page = cdgetpage(&params);
2542
2543                         page->audio.port[LEFT_PORT].channels = 0;
2544                         page->audio.port[RIGHT_PORT].channels = 0;
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 CDIOCSETLEFT:
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 CDIOCSETLEFT\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
2563                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2564                         if (error) {
2565                                 free(params.mode_buf, M_TEMP);
2566                                 break;
2567                         }
2568                         page = cdgetpage(&params);
2569
2570                         page->audio.port[LEFT_PORT].channels = LEFT_CHANNEL;
2571                         page->audio.port[RIGHT_PORT].channels = LEFT_CHANNEL;
2572                         page->audio.port[2].channels = 0;
2573                         page->audio.port[3].channels = 0;
2574                         error = cdsetmode(periph, &params);
2575                         free(params.mode_buf, M_TEMP);
2576                 }
2577                 break;
2578         case CDIOCSETRIGHT:
2579                 {
2580                         struct cd_mode_params params;
2581                         union cd_pages *page;
2582
2583                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2584                                   ("trying to do CDIOCSETRIGHT\n"));
2585
2586                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2587                         params.mode_buf = malloc(params.alloc_len, M_TEMP,
2588                                                  M_WAITOK | M_ZERO);
2589
2590                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2591                         if (error) {
2592                                 free(params.mode_buf, M_TEMP);
2593                                 break;
2594                         }
2595                         page = cdgetpage(&params);
2596
2597                         page->audio.port[LEFT_PORT].channels = RIGHT_CHANNEL;
2598                         page->audio.port[RIGHT_PORT].channels = RIGHT_CHANNEL;
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 CDIOCRESUME:
2606                 error = cdpause(periph, 1);
2607                 break;
2608         case CDIOCPAUSE:
2609                 error = cdpause(periph, 0);
2610                 break;
2611         case CDIOCSTART:
2612                 error = cdstartunit(periph, 0);
2613                 break;
2614         case CDIOCCLOSE:
2615                 error = cdstartunit(periph, 1);
2616
2617 #ifdef notyet
2618                 if (error != 0)
2619                         break;
2620
2621                 /*
2622                  * The user successfully closed the tray, run
2623                  * cdcheckmedia() again so we can re-sync the disklabel
2624                  * information.
2625                  */
2626                 cdcheckmedia(periph);
2627 #endif /* notyet */
2628                 break;
2629         case CDIOCSTOP:
2630                 error = cdstopunit(periph, 0);
2631                 break;
2632         case CDIOCEJECT:
2633                 error = cdstopunit(periph, 1);
2634
2635 #ifdef notyet
2636                 if (error != 0)
2637                         break;
2638
2639                 /*
2640                  * Since we've successfully ejected the media, run
2641                  * cdcheckmedia() again so we re-sync the disklabel
2642                  * information.
2643                  */
2644                 cdcheckmedia(periph);
2645 #endif /* notyet */
2646                 break;
2647         case CDIOCALLOW:
2648                 cdprevent(periph, PR_ALLOW);
2649                 break;
2650         case CDIOCPREVENT:
2651                 cdprevent(periph, PR_PREVENT);
2652                 break;
2653         case CDIOCSETDEBUG:
2654                 /* sc_link->flags |= (SDEV_DB1 | SDEV_DB2); */
2655                 error = ENOTTY;
2656                 break;
2657         case CDIOCCLRDEBUG:
2658                 /* sc_link->flags &= ~(SDEV_DB1 | SDEV_DB2); */
2659                 error = ENOTTY;
2660                 break;
2661         case CDIOCRESET:
2662                 /* return (cd_reset(periph)); */
2663                 error = ENOTTY;
2664                 break;
2665         case CDRIOCREADSPEED:
2666                 error = cdsetspeed(periph, *(u_int32_t *)addr, CDR_MAX_SPEED);
2667                 break;
2668         case CDRIOCWRITESPEED:
2669                 error = cdsetspeed(periph, CDR_MAX_SPEED, *(u_int32_t *)addr);
2670                 break;
2671         case DVDIOCSENDKEY:
2672         case DVDIOCREPORTKEY: {
2673                 struct dvd_authinfo *authinfo;
2674
2675                 authinfo = (struct dvd_authinfo *)addr;
2676
2677                 if (cmd == DVDIOCREPORTKEY)
2678                         error = cdreportkey(periph, authinfo);
2679                 else
2680                         error = cdsendkey(periph, authinfo);
2681                 break;
2682         }
2683         case DVDIOCREADSTRUCTURE: {
2684                 struct dvd_struct *dvdstruct;
2685
2686                 dvdstruct = (struct dvd_struct *)addr;
2687
2688                 error = cdreaddvdstructure(periph, dvdstruct);
2689
2690                 break;
2691         }
2692         default:
2693                 error = cam_periph_ioctl(periph, cmd, addr, cderror);
2694                 break;
2695         }
2696
2697         cam_periph_unlock(periph);
2698
2699         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("leaving cdioctl\n"));
2700
2701         return (error);
2702 }
2703
2704 static void
2705 cdprevent(struct cam_periph *periph, int action)
2706 {
2707         union   ccb *ccb;
2708         struct  cd_softc *softc;
2709         int     error;
2710
2711         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("entering cdprevent\n"));
2712
2713         softc = (struct cd_softc *)periph->softc;
2714
2715         if (((action == PR_ALLOW)
2716           && (softc->flags & CD_FLAG_DISC_LOCKED) == 0)
2717          || ((action == PR_PREVENT)
2718           && (softc->flags & CD_FLAG_DISC_LOCKED) != 0)) {
2719                 return;
2720         }
2721
2722         ccb = cdgetccb(periph, /* priority */ 1);
2723
2724         scsi_prevent(&ccb->csio,
2725                      /*retries*/ 1,
2726                      cddone,
2727                      MSG_SIMPLE_Q_TAG,
2728                      action,
2729                      SSD_FULL_SIZE,
2730                      /* timeout */60000);
2731
2732         error = cdrunccb(ccb, cderror, /*cam_flags*/0,
2733                         /*sense_flags*/SF_RETRY_UA|SF_NO_PRINT|SF_RETRY_SELTO);
2734
2735         xpt_release_ccb(ccb);
2736
2737         if (error == 0) {
2738                 if (action == PR_ALLOW)
2739                         softc->flags &= ~CD_FLAG_DISC_LOCKED;
2740                 else
2741                         softc->flags |= CD_FLAG_DISC_LOCKED;
2742         }
2743 }
2744
2745 int
2746 cdcheckmedia(struct cam_periph *periph)
2747 {
2748         struct cd_softc *softc;
2749         struct ioc_toc_header *toch;
2750         struct cd_toc_single leadout;
2751         struct ccb_getdev cgd;
2752         u_int32_t size, toclen;
2753         int error, num_entries, cdindex;
2754         int first_track_audio;
2755         struct disklabel *label;
2756
2757         softc = (struct cd_softc *)periph->softc;
2758
2759         first_track_audio = -1;
2760         error = 0;
2761
2762         cdprevent(periph, PR_PREVENT);
2763
2764         /*
2765          * Build prototype label for whole disk.
2766          * Should take information about different data tracks from the
2767          * TOC and put it in the partition table.
2768          */
2769         label = &softc->disk.d_label;
2770         bzero(label, sizeof(*label));
2771         label->d_type = DTYPE_SCSI;
2772
2773         /*
2774          * Grab the inquiry data to get the vendor and product names.
2775          * Put them in the typename and packname for the label.
2776          */
2777         xpt_setup_ccb(&cgd.ccb_h, periph->path, /*priority*/ 1);
2778         cgd.ccb_h.func_code = XPT_GDEV_TYPE;
2779         xpt_action((union ccb *)&cgd);
2780
2781         strncpy(label->d_typename, cgd.inq_data.vendor,
2782                 min(SID_VENDOR_SIZE, sizeof(label->d_typename)));
2783         strncpy(label->d_packname, cgd.inq_data.product,
2784                 min(SID_PRODUCT_SIZE, sizeof(label->d_packname)));
2785
2786         label->d_flags = D_REMOVABLE;
2787         /*
2788          * Make partition 'a' cover the whole disk.  This is a temporary
2789          * compatibility hack.  The 'a' partition should not exist, so
2790          * the slice code won't create it.  The slice code will make
2791          * partition (RAW_PART + 'a') cover the whole disk and fill in
2792          * some more defaults.
2793          */
2794         label->d_partitions[0].p_size = label->d_secperunit;
2795         label->d_partitions[0].p_fstype = FS_OTHER;
2796
2797         /*
2798          * Default to not reading the disklabel off the disk, until we can
2799          * verify that we have media, that we have a table of contents, and
2800          * that the first track is a data track (which could theoretically
2801          * contain a disklabel).
2802          */
2803         softc->disk.d_dsflags &= ~DSO_COMPATLABEL;
2804         softc->disk.d_dsflags |= DSO_NOLABELS;
2805
2806         /*
2807          * Clear the valid media and TOC flags until we've verified that we
2808          * have both.
2809          */
2810         softc->flags &= ~(CD_FLAG_VALID_MEDIA|CD_FLAG_VALID_TOC);
2811
2812         /*
2813          * Get the disc size and block size.  If we can't get it, we don't
2814          * have media, most likely.
2815          */
2816         if ((error = cdsize(periph, &size)) != 0) {
2817                 /*
2818                  * Set a bogus sector size, so the slice code won't try to
2819                  * divide by 0 and panic the kernel.
2820                  */
2821                 label->d_secsize = 2048;
2822
2823                 label->d_secperunit = 0;
2824
2825                 /*
2826                  * XXX KDM is this a good idea?  Seems to cause more
2827                  * problems.
2828                  */
2829                 if (softc->flags & CD_FLAG_OPEN) {
2830                         int force;
2831
2832                         force = 1;
2833
2834                         /*
2835                          * We don't bother checking the return value here,
2836                          * since we already have an error...
2837                          */
2838                         dsioctl(softc->disk.d_cdev, DIOCSYNCSLICEINFO,
2839                                 /*data*/(caddr_t)&force, /*flags*/ 0,
2840                                 &softc->disk.d_slice);
2841                 }
2842
2843                 /*
2844                  * Tell devstat(9) we don't have a blocksize.
2845                  */
2846                 softc->device_stats.flags |= DEVSTAT_BS_UNAVAILABLE;
2847
2848                 cdprevent(periph, PR_ALLOW);
2849
2850                 return (error);
2851         } else {
2852
2853                 label->d_secsize = softc->params.blksize;
2854                 label->d_secperunit = softc->params.disksize;
2855
2856                 /*
2857                  * Force a re-sync of slice information, like the blocksize,
2858                  * now that we know it.  It isn't pretty...but according to
2859                  * Bruce Evans, this is probably the best way to do it in
2860                  * -stable.  We only do this if we're already open, and
2861                  * therefore dsopen() has already run.  If CD_FLAG_OPEN
2862                  * isn't set, this isn't necessary.
2863                  */
2864                 if (softc->flags & CD_FLAG_OPEN) {
2865                         int force;
2866
2867                         force = 1;
2868
2869                         error = dsioctl(softc->disk.d_cdev, DIOCSYNCSLICEINFO,
2870                                         /*data*/(caddr_t)&force, /*flags*/ 0,
2871                                         &softc->disk.d_slice);
2872                         if (error != 0) {
2873                                 /*
2874                                  * Set a bogus sector size, so the slice code
2875                                  * won't try to divide by 0 and panic the
2876                                  * kernel.
2877                                  */
2878                                 label->d_secsize = 2048;
2879
2880                                 label->d_secperunit = 0;
2881
2882                                 /*
2883                                  * Tell devstat(9) we don't have a blocksize.
2884                                  */
2885                                 softc->device_stats.flags |=
2886                                         DEVSTAT_BS_UNAVAILABLE;
2887
2888                                 cdprevent(periph, PR_ALLOW);
2889                         }
2890                 }
2891
2892                 /*
2893                  * We unconditionally (re)set the blocksize each time the
2894                  * CD device is opened.  This is because the CD can change,
2895                  * and therefore the blocksize might change.
2896                  * XXX problems here if some slice or partition is still
2897                  * open with the old size?
2898                  */
2899                 if ((softc->device_stats.flags & DEVSTAT_BS_UNAVAILABLE) != 0)
2900                         softc->device_stats.flags &= ~DEVSTAT_BS_UNAVAILABLE;
2901                 softc->device_stats.block_size = softc->params.blksize;
2902
2903                 softc->flags |= CD_FLAG_VALID_MEDIA;
2904         }
2905
2906         /*
2907          * Now we check the table of contents.  This (currently) is only
2908          * used for the CDIOCPLAYTRACKS ioctl.  It may be used later to do
2909          * things like present a separate entry in /dev for each track,
2910          * like that acd(4) driver does.
2911          */
2912         bzero(&softc->toc, sizeof(softc->toc));
2913         toch = &softc->toc.header;
2914
2915         /*
2916          * We will get errors here for media that doesn't have a table of
2917          * contents.  According to the MMC-3 spec: "When a Read TOC/PMA/ATIP
2918          * command is presented for a DDCD/CD-R/RW media, where the first TOC
2919          * has not been recorded (no complete session) and the Format codes
2920          * 0000b, 0001b, or 0010b are specified, this command shall be rejected
2921          * with an INVALID FIELD IN CDB.  Devices that are not capable of
2922          * reading an incomplete session on DDC/CD-R/RW media shall report
2923          * CANNOT READ MEDIUM - INCOMPATIBLE FORMAT."
2924          *
2925          * So this isn't fatal if we can't read the table of contents, it
2926          * just means that the user won't be able to issue the play tracks
2927          * ioctl, and likely lots of other stuff won't work either.  They
2928          * need to burn the CD before we can do a whole lot with it.  So
2929          * we don't print anything here if we get an error back.
2930          */
2931         error = cdreadtoc(periph, 0, 0, (u_int8_t *)toch, sizeof(*toch),
2932                           SF_NO_PRINT);
2933         /*
2934          * Errors in reading the table of contents aren't fatal, we just
2935          * won't have a valid table of contents cached.
2936          */
2937         if (error != 0) {
2938                 error = 0;
2939                 bzero(&softc->toc, sizeof(softc->toc));
2940                 goto bailout;
2941         }
2942
2943         if (softc->quirks & CD_Q_BCD_TRACKS) {
2944                 toch->starting_track = bcd2bin(toch->starting_track);
2945                 toch->ending_track = bcd2bin(toch->ending_track);
2946         }
2947
2948         /* Number of TOC entries, plus leadout */
2949         num_entries = (toch->ending_track - toch->starting_track) + 2;
2950
2951         if (num_entries <= 0)
2952                 goto bailout;
2953
2954         toclen = num_entries * sizeof(struct cd_toc_entry);
2955
2956         error = cdreadtoc(periph, CD_MSF_FORMAT, toch->starting_track,
2957                           (u_int8_t *)&softc->toc, toclen + sizeof(*toch),
2958                           SF_NO_PRINT);
2959         if (error != 0) {
2960                 error = 0;
2961                 bzero(&softc->toc, sizeof(softc->toc));
2962                 goto bailout;
2963         }
2964
2965         if (softc->quirks & CD_Q_BCD_TRACKS) {
2966                 toch->starting_track = bcd2bin(toch->starting_track);
2967                 toch->ending_track = bcd2bin(toch->ending_track);
2968         }
2969         toch->len = scsi_2btoul((uint8_t *)&toch->len);
2970
2971         /*
2972          * XXX KDM is this necessary?  Probably only if the drive doesn't
2973          * return leadout information with the table of contents.
2974          */
2975         cdindex = toch->starting_track + num_entries -1;
2976         if (cdindex == toch->ending_track + 1) {
2977
2978                 error = cdreadtoc(periph, CD_MSF_FORMAT, LEADOUT,
2979                                   (u_int8_t *)&leadout, sizeof(leadout),
2980                                   SF_NO_PRINT);
2981                 if (error != 0) {
2982                         error = 0;
2983                         goto bailout;
2984                 }
2985                 softc->toc.entries[cdindex - toch->starting_track] =
2986                         leadout.entry;
2987         }
2988         if (softc->quirks & CD_Q_BCD_TRACKS) {
2989                 for (cdindex = 0; cdindex < (num_entries - 1); cdindex++) {
2990                         softc->toc.entries[cdindex].track =
2991                                 bcd2bin(softc->toc.entries[cdindex].track);
2992                 }
2993         }
2994
2995         /*
2996          * Run through the TOC entries, find the first entry and determine
2997          * whether it is an audio or data track.
2998          */
2999         for (cdindex = 0; cdindex < (num_entries - 1); cdindex++) {
3000                 if (softc->toc.entries[cdindex].track == toch->starting_track) {
3001                         if (softc->toc.entries[cdindex].control & 0x04)
3002                                 first_track_audio = 0;
3003                         else
3004                                 first_track_audio = 1;
3005                         break;
3006                 }
3007         }
3008
3009         /*
3010          * If first_track_audio is non-zero, we either have an error (e.g.
3011          * couldn't find the starting track) or the first track is an audio
3012          * track.  If first_track_audio is 0, the first track is a data
3013          * track that could have a disklabel.  Attempt to read the
3014          * disklabel off the media, just in case the user put one there.
3015          */
3016         if (first_track_audio == 0) {
3017                 softc->disk.d_dsflags |= DSO_COMPATLABEL;
3018                 softc->disk.d_dsflags &= ~DSO_NOLABELS;
3019         }
3020         softc->flags |= CD_FLAG_VALID_TOC;
3021
3022 bailout:
3023         return (error);
3024 }
3025
3026 static int
3027 cdsize(struct cam_periph *periph, u_int32_t *size)
3028 {
3029         struct cd_softc *softc;
3030         union ccb *ccb;
3031         struct scsi_read_capacity_data *rcap_buf;
3032         int error;
3033
3034         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("entering cdsize\n"));
3035
3036         softc = (struct cd_softc *)periph->softc;
3037
3038         ccb = cdgetccb(periph, /* priority */ 1);
3039
3040         rcap_buf = malloc(sizeof(struct scsi_read_capacity_data),
3041                           M_TEMP, M_INTWAIT | M_ZERO);
3042
3043         scsi_read_capacity(&ccb->csio,
3044                            /*retries*/ 1,
3045                            cddone,
3046                            MSG_SIMPLE_Q_TAG,
3047                            rcap_buf,
3048                            SSD_FULL_SIZE,
3049                            /* timeout */20000);
3050
3051         error = cdrunccb(ccb, cderror, /*cam_flags*/0,
3052                          /*sense_flags*/SF_RETRY_UA|SF_NO_PRINT|SF_RETRY_SELTO);
3053
3054         xpt_release_ccb(ccb);
3055
3056         softc->params.disksize = scsi_4btoul(rcap_buf->addr) + 1;
3057         softc->params.blksize  = scsi_4btoul(rcap_buf->length);
3058         /*
3059          * SCSI-3 mandates that the reported blocksize shall be 2048.
3060          * Older drives sometimes report funny values, trim it down to
3061          * 2048, or other parts of the kernel will get confused.
3062          *
3063          * XXX we leave drives alone that might report 512 bytes, as
3064          * well as drives reporting more weird sizes like perhaps 4K.
3065          */
3066         if (softc->params.blksize > 2048 && softc->params.blksize <= 2352)
3067                 softc->params.blksize = 2048;
3068
3069         free(rcap_buf, M_TEMP);
3070         *size = softc->params.disksize;
3071
3072         return (error);
3073
3074 }
3075
3076 static int
3077 cd6byteworkaround(union ccb *ccb)
3078 {
3079         u_int8_t *cdb;
3080         struct cam_periph *periph;
3081         struct cd_softc *softc;
3082         struct cd_mode_params *params;
3083         int frozen, found;
3084
3085         periph = xpt_path_periph(ccb->ccb_h.path);
3086         softc = (struct cd_softc *)periph->softc;
3087
3088         cdb = ccb->csio.cdb_io.cdb_bytes;
3089
3090         if ((ccb->ccb_h.flags & CAM_CDB_POINTER)
3091          || ((cdb[0] != MODE_SENSE_6)
3092           && (cdb[0] != MODE_SELECT_6)))
3093                 return (0);
3094
3095         /*
3096          * Because there is no convenient place to stash the overall
3097          * cd_mode_params structure pointer, we have to grab it like this.
3098          * This means that ALL MODE_SENSE and MODE_SELECT requests in the
3099          * cd(4) driver MUST go through cdgetmode() and cdsetmode()!
3100          *
3101          * XXX It would be nice if, at some point, we could increase the
3102          * number of available peripheral private pointers.  Both pointers
3103          * are currently used in most every peripheral driver.
3104          */
3105         found = 0;
3106
3107         STAILQ_FOREACH(params, &softc->mode_queue, links) {
3108                 if (params->mode_buf == ccb->csio.data_ptr) {
3109                         found = 1;
3110                         break;
3111                 }
3112         }
3113
3114         /*
3115          * This shouldn't happen.  All mode sense and mode select
3116          * operations in the cd(4) driver MUST go through cdgetmode() and
3117          * cdsetmode()!
3118          */
3119         if (found == 0) {
3120                 xpt_print_path(periph->path);
3121                 printf("mode buffer not found in mode queue!\n");
3122                 return (0);
3123         }
3124
3125         params->cdb_size = 10;
3126         softc->minimum_command_size = 10;
3127         xpt_print_path(ccb->ccb_h.path);
3128         printf("%s(6) failed, increasing minimum CDB size to 10 bytes\n",
3129                (cdb[0] == MODE_SENSE_6) ? "MODE_SENSE" : "MODE_SELECT");
3130
3131         if (cdb[0] == MODE_SENSE_6) {
3132                 struct scsi_mode_sense_10 ms10;
3133                 struct scsi_mode_sense_6 *ms6;
3134                 int len;
3135
3136                 ms6 = (struct scsi_mode_sense_6 *)cdb;
3137
3138                 bzero(&ms10, sizeof(ms10));
3139                 ms10.opcode = MODE_SENSE_10;
3140                 ms10.byte2 = ms6->byte2;
3141                 ms10.page = ms6->page;
3142
3143                 /*
3144                  * 10 byte mode header, block descriptor,
3145                  * sizeof(union cd_pages)
3146                  */
3147                 len = sizeof(struct cd_mode_data_10);
3148                 ccb->csio.dxfer_len = len;
3149
3150                 scsi_ulto2b(len, ms10.length);
3151                 ms10.control = ms6->control;
3152                 bcopy(&ms10, cdb, 10);
3153                 ccb->csio.cdb_len = 10;
3154         } else {
3155                 struct scsi_mode_select_10 ms10;
3156                 struct scsi_mode_select_6 *ms6;
3157                 struct scsi_mode_header_6 *header6;
3158                 struct scsi_mode_header_10 *header10;
3159                 struct scsi_mode_page_header *page_header;
3160                 int blk_desc_len, page_num, page_size, len;
3161
3162                 ms6 = (struct scsi_mode_select_6 *)cdb;
3163
3164                 bzero(&ms10, sizeof(ms10));
3165                 ms10.opcode = MODE_SELECT_10;
3166                 ms10.byte2 = ms6->byte2;
3167
3168                 header6 = (struct scsi_mode_header_6 *)params->mode_buf;
3169                 header10 = (struct scsi_mode_header_10 *)params->mode_buf;
3170
3171                 page_header = find_mode_page_6(header6);
3172                 page_num = page_header->page_code;
3173
3174                 blk_desc_len = header6->blk_desc_len;
3175
3176                 page_size = cdgetpagesize(page_num);
3177
3178                 if (page_size != (page_header->page_length +
3179                     sizeof(*page_header)))
3180                         page_size = page_header->page_length +
3181                                 sizeof(*page_header);
3182
3183                 len = sizeof(*header10) + blk_desc_len + page_size;
3184
3185                 len = min(params->alloc_len, len);
3186
3187                 /*
3188                  * Since the 6 byte parameter header is shorter than the 10
3189                  * byte parameter header, we need to copy the actual mode
3190                  * page data, and the block descriptor, if any, so things wind
3191                  * up in the right place.  The regions will overlap, but
3192                  * bcopy() does the right thing.
3193                  */
3194                 bcopy(params->mode_buf + sizeof(*header6),
3195                       params->mode_buf + sizeof(*header10),
3196                       len - sizeof(*header10));
3197
3198                 /* Make sure these fields are set correctly. */
3199                 scsi_ulto2b(0, header10->data_length);
3200                 header10->medium_type = 0;
3201                 scsi_ulto2b(blk_desc_len, header10->blk_desc_len);
3202
3203                 ccb->csio.dxfer_len = len;
3204
3205                 scsi_ulto2b(len, ms10.length);
3206                 ms10.control = ms6->control;
3207                 bcopy(&ms10, cdb, 10);
3208                 ccb->csio.cdb_len = 10;
3209         }
3210
3211         frozen = (ccb->ccb_h.status & CAM_DEV_QFRZN) != 0;
3212         ccb->ccb_h.status = CAM_REQUEUE_REQ;
3213         xpt_action(ccb);
3214         if (frozen) {
3215                 cam_release_devq(ccb->ccb_h.path,
3216                                  /*relsim_flags*/0,
3217                                  /*openings*/0,
3218                                  /*timeout*/0,
3219                                  /*getcount_only*/0);
3220         }
3221
3222         return (ERESTART);
3223 }
3224
3225 static int
3226 cderror(union ccb *ccb, u_int32_t cam_flags, u_int32_t sense_flags)
3227 {
3228         struct cd_softc *softc;
3229         struct cam_periph *periph;
3230         int error;
3231
3232         periph = xpt_path_periph(ccb->ccb_h.path);
3233         softc = (struct cd_softc *)periph->softc;
3234
3235         error = 0;
3236
3237         /*
3238          * We use a status of CAM_REQ_INVALID as shorthand -- if a 6 byte
3239          * CDB comes back with this particular error, try transforming it
3240          * into the 10 byte version.
3241          */
3242         if ((ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_INVALID) {
3243                 error = cd6byteworkaround(ccb);
3244         } else if (((ccb->ccb_h.status & CAM_STATUS_MASK) ==
3245                      CAM_SCSI_STATUS_ERROR)
3246          && (ccb->ccb_h.status & CAM_AUTOSNS_VALID)
3247          && (ccb->csio.scsi_status == SCSI_STATUS_CHECK_COND)
3248          && ((ccb->ccb_h.flags & CAM_SENSE_PHYS) == 0)
3249          && ((ccb->ccb_h.flags & CAM_SENSE_PTR) == 0)) {
3250                 int sense_key, error_code, asc, ascq;
3251
3252                 scsi_extract_sense(&ccb->csio.sense_data,
3253                                    &error_code, &sense_key, &asc, &ascq);
3254                 if (sense_key == SSD_KEY_ILLEGAL_REQUEST)
3255                         error = cd6byteworkaround(ccb);
3256         }
3257
3258         if (error == ERESTART)
3259                 return (error);
3260
3261         /*
3262          * XXX
3263          * Until we have a better way of doing pack validation,
3264          * don't treat UAs as errors.
3265          */
3266         sense_flags |= SF_RETRY_UA;
3267         return (cam_periph_error(ccb, cam_flags, sense_flags,
3268                                  &softc->saved_ccb));
3269 }
3270
3271 /*
3272  * Read table of contents
3273  */
3274 static int
3275 cdreadtoc(struct cam_periph *periph, u_int32_t mode, u_int32_t start,
3276           u_int8_t *data, u_int32_t len, u_int32_t sense_flags)
3277 {
3278         struct scsi_read_toc *scsi_cmd;
3279         u_int32_t ntoc;
3280         struct ccb_scsiio *csio;
3281         union ccb *ccb;
3282         int error;
3283
3284         ntoc = len;
3285         error = 0;
3286
3287         ccb = cdgetccb(periph, /* priority */ 1);
3288
3289         csio = &ccb->csio;
3290
3291         cam_fill_csio(csio,
3292                       /* retries */ 1,
3293                       /* cbfcnp */ cddone,
3294                       /* flags */ CAM_DIR_IN,
3295                       /* tag_action */ MSG_SIMPLE_Q_TAG,
3296                       /* data_ptr */ data,
3297                       /* dxfer_len */ len,
3298                       /* sense_len */ SSD_FULL_SIZE,
3299                       sizeof(struct scsi_read_toc),
3300                       /* timeout */ 50000);
3301
3302         scsi_cmd = (struct scsi_read_toc *)&csio->cdb_io.cdb_bytes;
3303         bzero (scsi_cmd, sizeof(*scsi_cmd));
3304
3305         if (mode == CD_MSF_FORMAT)
3306                 scsi_cmd->byte2 |= CD_MSF;
3307         scsi_cmd->from_track = start;
3308         /* scsi_ulto2b(ntoc, (u_int8_t *)scsi_cmd->data_len); */
3309         scsi_cmd->data_len[0] = (ntoc) >> 8;
3310         scsi_cmd->data_len[1] = (ntoc) & 0xff;
3311
3312         scsi_cmd->op_code = READ_TOC;
3313
3314         error = cdrunccb(ccb, cderror, /*cam_flags*/0,
3315                          /*sense_flags*/SF_RETRY_UA | SF_RETRY_SELTO |
3316                          sense_flags);
3317
3318         xpt_release_ccb(ccb);
3319
3320         return(error);
3321 }
3322
3323 static int
3324 cdreadsubchannel(struct cam_periph *periph, u_int32_t mode,
3325                  u_int32_t format, int track,
3326                  struct cd_sub_channel_info *data, u_int32_t len)
3327 {
3328         struct scsi_read_subchannel *scsi_cmd;
3329         struct ccb_scsiio *csio;
3330         union ccb *ccb;
3331         int error;
3332
3333         error = 0;
3334
3335         ccb = cdgetccb(periph, /* priority */ 1);
3336
3337         csio = &ccb->csio;
3338
3339         cam_fill_csio(csio,
3340                       /* retries */ 1,
3341                       /* cbfcnp */ cddone,
3342                       /* flags */ CAM_DIR_IN,
3343                       /* tag_action */ MSG_SIMPLE_Q_TAG,
3344                       /* data_ptr */ (u_int8_t *)data,
3345                       /* dxfer_len */ len,
3346                       /* sense_len */ SSD_FULL_SIZE,
3347                       sizeof(struct scsi_read_subchannel),
3348                       /* timeout */ 50000);
3349
3350         scsi_cmd = (struct scsi_read_subchannel *)&csio->cdb_io.cdb_bytes;
3351         bzero (scsi_cmd, sizeof(*scsi_cmd));
3352
3353         scsi_cmd->op_code = READ_SUBCHANNEL;
3354         if (mode == CD_MSF_FORMAT)
3355                 scsi_cmd->byte1 |= CD_MSF;
3356         scsi_cmd->byte2 = SRS_SUBQ;
3357         scsi_cmd->subchan_format = format;
3358         scsi_cmd->track = track;
3359         scsi_ulto2b(len, (u_int8_t *)scsi_cmd->data_len);
3360         scsi_cmd->control = 0;
3361
3362         error = cdrunccb(ccb, cderror, /*cam_flags*/0,
3363                          /*sense_flags*/SF_RETRY_UA|SF_RETRY_SELTO);
3364
3365         xpt_release_ccb(ccb);
3366
3367         return(error);
3368 }
3369
3370 /*
3371  * All MODE_SENSE requests in the cd(4) driver MUST go through this
3372  * routine.  See comments in cd6byteworkaround() for details.
3373  */
3374 static int
3375 cdgetmode(struct cam_periph *periph, struct cd_mode_params *data,
3376           u_int32_t page)
3377 {
3378         struct ccb_scsiio *csio;
3379         struct cd_softc *softc;
3380         union ccb *ccb;
3381         int param_len;
3382         int error;
3383
3384         softc = (struct cd_softc *)periph->softc;
3385
3386         ccb = cdgetccb(periph, /* priority */ 1);
3387
3388         csio = &ccb->csio;
3389
3390         data->cdb_size = softc->minimum_command_size;
3391         if (data->cdb_size < 10)
3392                 param_len = sizeof(struct cd_mode_data);
3393         else
3394                 param_len = sizeof(struct cd_mode_data_10);
3395
3396         /* Don't say we've got more room than we actually allocated */
3397         param_len = min(param_len, data->alloc_len);
3398
3399         scsi_mode_sense_len(csio,
3400                             /* retries */ 1,
3401                             /* cbfcnp */ cddone,
3402                             /* tag_action */ MSG_SIMPLE_Q_TAG,
3403                             /* dbd */ 0,
3404                             /* page_code */ SMS_PAGE_CTRL_CURRENT,
3405                             /* page */ page,
3406                             /* param_buf */ data->mode_buf,
3407                             /* param_len */ param_len,
3408                             /* minimum_cmd_size */ softc->minimum_command_size,
3409                             /* sense_len */ SSD_FULL_SIZE,
3410                             /* timeout */ 50000);
3411
3412         /*
3413          * It would be nice not to have to do this, but there's no
3414          * available pointer in the CCB that would allow us to stuff the
3415          * mode params structure in there and retrieve it in
3416          * cd6byteworkaround(), so we can set the cdb size.  The cdb size
3417          * lets the caller know what CDB size we ended up using, so they
3418          * can find the actual mode page offset.
3419          */
3420         STAILQ_INSERT_TAIL(&softc->mode_queue, data, links);
3421
3422         error = cdrunccb(ccb, cderror, /*cam_flags*/0,
3423                          /*sense_flags*/SF_RETRY_UA|SF_RETRY_SELTO);
3424
3425         xpt_release_ccb(ccb);
3426
3427         STAILQ_REMOVE(&softc->mode_queue, data, cd_mode_params, links);
3428
3429         /*
3430          * This is a bit of belt-and-suspenders checking, but if we run
3431          * into a situation where the target sends back multiple block
3432          * descriptors, we might not have enough space in the buffer to
3433          * see the whole mode page.  Better to return an error than
3434          * potentially access memory beyond our malloced region.
3435          */
3436         if (error == 0) {
3437                 u_int32_t data_len;
3438
3439                 if (data->cdb_size == 10) {
3440                         struct scsi_mode_header_10 *hdr10;
3441
3442                         hdr10 = (struct scsi_mode_header_10 *)data->mode_buf;
3443                         data_len = scsi_2btoul(hdr10->data_length);
3444                         data_len += sizeof(hdr10->data_length);
3445                 } else {
3446                         struct scsi_mode_header_6 *hdr6;
3447
3448                         hdr6 = (struct scsi_mode_header_6 *)data->mode_buf;
3449                         data_len = hdr6->data_length;
3450                         data_len += sizeof(hdr6->data_length);
3451                 }
3452
3453                 /*
3454                  * Complain if there is more mode data available than we
3455                  * allocated space for.  This could potentially happen if
3456                  * we miscalculated the page length for some reason, if the
3457                  * drive returns multiple block descriptors, or if it sets
3458                  * the data length incorrectly.
3459                  */
3460                 if (data_len > data->alloc_len) {
3461                         xpt_print_path(periph->path);
3462                         printf("allocated modepage %d length %d < returned "
3463                                "length %d\n", page, data->alloc_len, data_len);
3464
3465                         error = ENOSPC;
3466                 }
3467         }
3468         return (error);
3469 }
3470
3471 /*
3472  * All MODE_SELECT requests in the cd(4) driver MUST go through this
3473  * routine.  See comments in cd6byteworkaround() for details.
3474  */
3475 static int
3476 cdsetmode(struct cam_periph *periph, struct cd_mode_params *data)
3477 {
3478         struct ccb_scsiio *csio;
3479         struct cd_softc *softc;
3480         union ccb *ccb;
3481         int cdb_size, param_len;
3482         int error;
3483
3484         softc = (struct cd_softc *)periph->softc;
3485
3486         ccb = cdgetccb(periph, /* priority */ 1);
3487
3488         csio = &ccb->csio;
3489
3490         error = 0;
3491
3492         /*
3493          * If the data is formatted for the 10 byte version of the mode
3494          * select parameter list, we need to use the 10 byte CDB.
3495          * Otherwise, we use whatever the stored minimum command size.
3496          */
3497         if (data->cdb_size == 10)
3498                 cdb_size = data->cdb_size;
3499         else
3500                 cdb_size = softc->minimum_command_size;
3501
3502         if (cdb_size >= 10) {
3503                 struct scsi_mode_header_10 *mode_header;
3504                 u_int32_t data_len;
3505
3506                 mode_header = (struct scsi_mode_header_10 *)data->mode_buf;
3507
3508                 data_len = scsi_2btoul(mode_header->data_length);
3509
3510                 scsi_ulto2b(0, mode_header->data_length);
3511                 /*
3512                  * SONY drives do not allow a mode select with a medium_type
3513                  * value that has just been returned by a mode sense; use a
3514                  * medium_type of 0 (Default) instead.
3515                  */
3516                 mode_header->medium_type = 0;
3517
3518                 /*
3519                  * Pass back whatever the drive passed to us, plus the size
3520                  * of the data length field.
3521                  */
3522                 param_len = data_len + sizeof(mode_header->data_length);
3523
3524         } else {
3525                 struct scsi_mode_header_6 *mode_header;
3526
3527                 mode_header = (struct scsi_mode_header_6 *)data->mode_buf;
3528
3529                 param_len = mode_header->data_length + 1;
3530
3531                 mode_header->data_length = 0;
3532                 /*
3533                  * SONY drives do not allow a mode select with a medium_type
3534                  * value that has just been returned by a mode sense; use a
3535                  * medium_type of 0 (Default) instead.
3536                  */
3537                 mode_header->medium_type = 0;
3538         }
3539
3540         /* Don't say we've got more room than we actually allocated */
3541         param_len = min(param_len, data->alloc_len);
3542
3543         scsi_mode_select_len(csio,
3544                              /* retries */ 1,
3545                              /* cbfcnp */ cddone,
3546                              /* tag_action */ MSG_SIMPLE_Q_TAG,
3547                              /* scsi_page_fmt */ 1,
3548                              /* save_pages */ 0,
3549                              /* param_buf */ data->mode_buf,
3550                              /* param_len */ param_len,
3551                              /* minimum_cmd_size */ cdb_size,
3552                              /* sense_len */ SSD_FULL_SIZE,
3553                              /* timeout */ 50000);
3554
3555         /* See comments in cdgetmode() and cd6byteworkaround(). */
3556         STAILQ_INSERT_TAIL(&softc->mode_queue, data, links);
3557
3558         error = cdrunccb(ccb, cderror, /*cam_flags*/0,
3559                          /*sense_flags*/SF_RETRY_UA | SF_RETRY_SELTO);
3560
3561         xpt_release_ccb(ccb);
3562
3563         STAILQ_REMOVE(&softc->mode_queue, data, cd_mode_params, links);
3564
3565         return (error);
3566 }
3567
3568
3569
3570 static int
3571 cdplay(struct cam_periph *periph, u_int32_t blk, u_int32_t len)
3572 {
3573         struct ccb_scsiio *csio;
3574         union ccb *ccb;
3575         int error;
3576         u_int8_t cdb_len;
3577
3578         error = 0;
3579         ccb = cdgetccb(periph, /* priority */ 1);
3580         csio = &ccb->csio;
3581         /*
3582          * Use the smallest possible command to perform the operation.
3583          */
3584         if ((len & 0xffff0000) == 0) {
3585                 /*
3586                  * We can fit in a 10 byte cdb.
3587                  */
3588                 struct scsi_play_10 *scsi_cmd;
3589
3590                 scsi_cmd = (struct scsi_play_10 *)&csio->cdb_io.cdb_bytes;
3591                 bzero (scsi_cmd, sizeof(*scsi_cmd));
3592                 scsi_cmd->op_code = PLAY_10;
3593                 scsi_ulto4b(blk, (u_int8_t *)scsi_cmd->blk_addr);
3594                 scsi_ulto2b(len, (u_int8_t *)scsi_cmd->xfer_len);
3595                 cdb_len = sizeof(*scsi_cmd);
3596         } else  {
3597                 struct scsi_play_12 *scsi_cmd;
3598
3599                 scsi_cmd = (struct scsi_play_12 *)&csio->cdb_io.cdb_bytes;
3600                 bzero (scsi_cmd, sizeof(*scsi_cmd));
3601                 scsi_cmd->op_code = PLAY_12;
3602                 scsi_ulto4b(blk, (u_int8_t *)scsi_cmd->blk_addr);
3603                 scsi_ulto4b(len, (u_int8_t *)scsi_cmd->xfer_len);
3604                 cdb_len = sizeof(*scsi_cmd);
3605         }
3606         cam_fill_csio(csio,
3607                       /*retries*/2,
3608                       cddone,
3609                       /*flags*/CAM_DIR_NONE,
3610                       MSG_SIMPLE_Q_TAG,
3611                       /*dataptr*/NULL,
3612                       /*datalen*/0,
3613                       /*sense_len*/SSD_FULL_SIZE,
3614                       cdb_len,
3615                       /*timeout*/50 * 1000);
3616
3617         error = cdrunccb(ccb, cderror, /*cam_flags*/0,
3618                          /*sense_flags*/SF_RETRY_UA | SF_RETRY_SELTO);
3619
3620         xpt_release_ccb(ccb);
3621
3622         return(error);
3623 }
3624
3625 static int
3626 cdplaymsf(struct cam_periph *periph, u_int32_t startm, u_int32_t starts,
3627           u_int32_t startf, u_int32_t endm, u_int32_t ends, u_int32_t endf)
3628 {
3629         struct scsi_play_msf *scsi_cmd;
3630         struct ccb_scsiio *csio;
3631         union ccb *ccb;
3632         int error;
3633
3634         error = 0;
3635
3636         ccb = cdgetccb(periph, /* priority */ 1);
3637
3638         csio = &ccb->csio;
3639
3640         cam_fill_csio(csio,
3641                       /* retries */ 1,
3642                       /* cbfcnp */ cddone,
3643                       /* flags */ CAM_DIR_NONE,
3644                       /* tag_action */ MSG_SIMPLE_Q_TAG,
3645                       /* data_ptr */ NULL,
3646                       /* dxfer_len */ 0,
3647                       /* sense_len */ SSD_FULL_SIZE,
3648                       sizeof(struct scsi_play_msf),
3649                       /* timeout */ 50000);
3650
3651         scsi_cmd = (struct scsi_play_msf *)&csio->cdb_io.cdb_bytes;
3652         bzero (scsi_cmd, sizeof(*scsi_cmd));
3653
3654         scsi_cmd->op_code = PLAY_MSF;
3655         scsi_cmd->start_m = startm;
3656         scsi_cmd->start_s = starts;
3657         scsi_cmd->start_f = startf;
3658         scsi_cmd->end_m = endm;
3659         scsi_cmd->end_s = ends;
3660         scsi_cmd->end_f = endf;
3661
3662         error = cdrunccb(ccb, cderror, /*cam_flags*/0,
3663                          /*sense_flags*/SF_RETRY_UA | SF_RETRY_SELTO);
3664
3665         xpt_release_ccb(ccb);
3666
3667         return(error);
3668 }
3669
3670
3671 static int
3672 cdplaytracks(struct cam_periph *periph, u_int32_t strack, u_int32_t sindex,
3673              u_int32_t etrack, u_int32_t eindex)
3674 {
3675         struct scsi_play_track *scsi_cmd;
3676         struct ccb_scsiio *csio;
3677         union ccb *ccb;
3678         int error;
3679
3680         error = 0;
3681
3682         ccb = cdgetccb(periph, /* priority */ 1);
3683
3684         csio = &ccb->csio;
3685
3686         cam_fill_csio(csio,
3687                       /* retries */ 1,
3688                       /* cbfcnp */ cddone,
3689                       /* flags */ CAM_DIR_NONE,
3690                       /* tag_action */ MSG_SIMPLE_Q_TAG,
3691                       /* data_ptr */ NULL,
3692                       /* dxfer_len */ 0,
3693                       /* sense_len */ SSD_FULL_SIZE,
3694                       sizeof(struct scsi_play_track),
3695                       /* timeout */ 50000);
3696
3697         scsi_cmd = (struct scsi_play_track *)&csio->cdb_io.cdb_bytes;
3698         bzero (scsi_cmd, sizeof(*scsi_cmd));
3699
3700         scsi_cmd->op_code = PLAY_TRACK;
3701         scsi_cmd->start_track = strack;
3702         scsi_cmd->start_index = sindex;
3703         scsi_cmd->end_track = etrack;
3704         scsi_cmd->end_index = eindex;
3705
3706         error = cdrunccb(ccb, cderror, /*cam_flags*/0,
3707                          /*sense_flags*/SF_RETRY_UA | SF_RETRY_SELTO);
3708
3709         xpt_release_ccb(ccb);
3710
3711         return(error);
3712 }
3713
3714 static int
3715 cdpause(struct cam_periph *periph, u_int32_t go)
3716 {
3717         struct scsi_pause *scsi_cmd;
3718         struct ccb_scsiio *csio;
3719         union ccb *ccb;
3720         int error;
3721
3722         error = 0;
3723
3724         ccb = cdgetccb(periph, /* priority */ 1);
3725
3726         csio = &ccb->csio;
3727
3728         cam_fill_csio(csio,
3729                       /* retries */ 1,
3730                       /* cbfcnp */ cddone,
3731                       /* flags */ CAM_DIR_NONE,
3732                       /* tag_action */ MSG_SIMPLE_Q_TAG,
3733                       /* data_ptr */ NULL,
3734                       /* dxfer_len */ 0,
3735                       /* sense_len */ SSD_FULL_SIZE,
3736                       sizeof(struct scsi_pause),
3737                       /* timeout */ 50000);
3738
3739         scsi_cmd = (struct scsi_pause *)&csio->cdb_io.cdb_bytes;
3740         bzero (scsi_cmd, sizeof(*scsi_cmd));
3741
3742         scsi_cmd->op_code = PAUSE;
3743         scsi_cmd->resume = go;
3744
3745         error = cdrunccb(ccb, cderror, /*cam_flags*/0,
3746                          /*sense_flags*/SF_RETRY_UA |SF_RETRY_SELTO);
3747
3748         xpt_release_ccb(ccb);
3749
3750         return(error);
3751 }
3752
3753 static int
3754 cdstartunit(struct cam_periph *periph, int load)
3755 {
3756         union ccb *ccb;
3757         int error;
3758
3759         error = 0;
3760
3761         ccb = cdgetccb(periph, /* priority */ 1);
3762
3763         scsi_start_stop(&ccb->csio,
3764                         /* retries */ 1,
3765                         /* cbfcnp */ cddone,
3766                         /* tag_action */ MSG_SIMPLE_Q_TAG,
3767                         /* start */ TRUE,
3768                         /* load_eject */ load,
3769                         /* immediate */ FALSE,
3770                         /* sense_len */ SSD_FULL_SIZE,
3771                         /* timeout */ 50000);
3772
3773         error = cdrunccb(ccb, cderror, /*cam_flags*/0,
3774                          /*sense_flags*/SF_RETRY_UA | SF_RETRY_SELTO);
3775
3776         xpt_release_ccb(ccb);
3777
3778         return(error);
3779 }
3780
3781 static int
3782 cdstopunit(struct cam_periph *periph, u_int32_t eject)
3783 {
3784         union ccb *ccb;
3785         int error;
3786
3787         error = 0;
3788
3789         ccb = cdgetccb(periph, /* priority */ 1);
3790
3791         scsi_start_stop(&ccb->csio,
3792                         /* retries */ 1,
3793                         /* cbfcnp */ cddone,
3794                         /* tag_action */ MSG_SIMPLE_Q_TAG,
3795                         /* start */ FALSE,
3796                         /* load_eject */ eject,
3797                         /* immediate */ FALSE,
3798                         /* sense_len */ SSD_FULL_SIZE,
3799                         /* timeout */ 50000);
3800
3801         error = cdrunccb(ccb, cderror, /*cam_flags*/0,
3802                          /*sense_flags*/SF_RETRY_UA | SF_RETRY_SELTO);
3803
3804         xpt_release_ccb(ccb);
3805
3806         return(error);
3807 }
3808
3809 static int
3810 cdsetspeed(struct cam_periph *periph, u_int32_t rdspeed, u_int32_t wrspeed)
3811 {
3812         struct scsi_set_speed *scsi_cmd;
3813         struct ccb_scsiio *csio;
3814         union ccb *ccb;
3815         int error;
3816
3817         error = 0;
3818         ccb = cdgetccb(periph, /* priority */ 1);
3819         csio = &ccb->csio;
3820
3821         /* Preserve old behavior: units in multiples of CDROM speed */
3822         if (rdspeed < 177)
3823                 rdspeed *= 177;
3824         if (wrspeed < 177)
3825                 wrspeed *= 177;
3826
3827         cam_fill_csio(csio,
3828                       /* retries */ 1,
3829                       /* cbfcnp */ cddone,
3830                       /* flags */ CAM_DIR_NONE,
3831                       /* tag_action */ MSG_SIMPLE_Q_TAG,
3832                       /* data_ptr */ NULL,
3833                       /* dxfer_len */ 0,
3834                       /* sense_len */ SSD_FULL_SIZE,
3835                       sizeof(struct scsi_set_speed),
3836                       /* timeout */ 50000);
3837
3838         scsi_cmd = (struct scsi_set_speed *)&csio->cdb_io.cdb_bytes;
3839         bzero(scsi_cmd, sizeof(*scsi_cmd));
3840
3841         scsi_cmd->opcode = SET_CD_SPEED;
3842         scsi_ulto2b(rdspeed, scsi_cmd->readspeed);
3843         scsi_ulto2b(wrspeed, scsi_cmd->writespeed);
3844
3845         error = cdrunccb(ccb, cderror, /*cam_flags*/0,
3846                          /*sense_flags*/SF_RETRY_UA | SF_RETRY_SELTO);
3847
3848         xpt_release_ccb(ccb);
3849
3850         return(error);
3851 }
3852
3853 static int
3854 cdreportkey(struct cam_periph *periph, struct dvd_authinfo *authinfo)
3855 {
3856         union ccb *ccb;
3857         u_int8_t *databuf;
3858         u_int32_t lba;
3859         int error;
3860         int length;
3861
3862         error = 0;
3863         databuf = NULL;
3864         lba = 0;
3865
3866         ccb = cdgetccb(periph, /* priority */ 1);
3867
3868         switch (authinfo->format) {
3869         case DVD_REPORT_AGID:
3870                 length = sizeof(struct scsi_report_key_data_agid);
3871                 break;
3872         case DVD_REPORT_CHALLENGE:
3873                 length = sizeof(struct scsi_report_key_data_challenge);
3874                 break;
3875         case DVD_REPORT_KEY1:
3876                 length = sizeof(struct scsi_report_key_data_key1_key2);
3877                 break;
3878         case DVD_REPORT_TITLE_KEY:
3879                 length = sizeof(struct scsi_report_key_data_title);
3880                 /* The lba field is only set for the title key */
3881                 lba = authinfo->lba;
3882                 break;
3883         case DVD_REPORT_ASF:
3884                 length = sizeof(struct scsi_report_key_data_asf);
3885                 break;
3886         case DVD_REPORT_RPC:
3887                 length = sizeof(struct scsi_report_key_data_rpc);
3888                 break;
3889         case DVD_INVALIDATE_AGID:
3890                 length = 0;
3891                 break;
3892         default:
3893                 error = EINVAL;
3894                 goto bailout;
3895                 break; /* NOTREACHED */
3896         }
3897
3898         if (length != 0) {
3899                 databuf = malloc(length, M_DEVBUF, M_INTWAIT | M_ZERO);
3900         } else {
3901                 databuf = NULL;
3902         }
3903
3904
3905         scsi_report_key(&ccb->csio,
3906                         /* retries */ 1,
3907                         /* cbfcnp */ cddone,
3908                         /* tag_action */ MSG_SIMPLE_Q_TAG,
3909                         /* lba */ lba,
3910                         /* agid */ authinfo->agid,
3911                         /* key_format */ authinfo->format,
3912                         /* data_ptr */ databuf,
3913                         /* dxfer_len */ length,
3914                         /* sense_len */ SSD_FULL_SIZE,
3915                         /* timeout */ 50000);
3916
3917         error = cdrunccb(ccb, cderror, /*cam_flags*/0,
3918                          /*sense_flags*/SF_RETRY_UA | SF_RETRY_SELTO);
3919
3920         if (error != 0)
3921                 goto bailout;
3922
3923         if (ccb->csio.resid != 0) {
3924                 xpt_print_path(periph->path);
3925                 printf("warning, residual for report key command is %d\n",
3926                        ccb->csio.resid);
3927         }
3928
3929         switch(authinfo->format) {
3930         case DVD_REPORT_AGID: {
3931                 struct scsi_report_key_data_agid *agid_data;
3932
3933                 agid_data = (struct scsi_report_key_data_agid *)databuf;
3934
3935                 authinfo->agid = (agid_data->agid & RKD_AGID_MASK) >>
3936                         RKD_AGID_SHIFT;
3937                 break;
3938         }
3939         case DVD_REPORT_CHALLENGE: {
3940                 struct scsi_report_key_data_challenge *chal_data;
3941
3942                 chal_data = (struct scsi_report_key_data_challenge *)databuf;
3943
3944                 bcopy(chal_data->challenge_key, authinfo->keychal,
3945                       min(sizeof(chal_data->challenge_key),
3946                           sizeof(authinfo->keychal)));
3947                 break;
3948         }
3949         case DVD_REPORT_KEY1: {
3950                 struct scsi_report_key_data_key1_key2 *key1_data;
3951
3952                 key1_data = (struct scsi_report_key_data_key1_key2 *)databuf;
3953
3954                 bcopy(key1_data->key1, authinfo->keychal,
3955                       min(sizeof(key1_data->key1), sizeof(authinfo->keychal)));
3956                 break;
3957         }
3958         case DVD_REPORT_TITLE_KEY: {
3959                 struct scsi_report_key_data_title *title_data;
3960
3961                 title_data = (struct scsi_report_key_data_title *)databuf;
3962
3963                 authinfo->cpm = (title_data->byte0 & RKD_TITLE_CPM) >>
3964                         RKD_TITLE_CPM_SHIFT;
3965                 authinfo->cp_sec = (title_data->byte0 & RKD_TITLE_CP_SEC) >>
3966                         RKD_TITLE_CP_SEC_SHIFT;
3967                 authinfo->cgms = (title_data->byte0 & RKD_TITLE_CMGS_MASK) >>
3968                         RKD_TITLE_CMGS_SHIFT;
3969                 bcopy(title_data->title_key, authinfo->keychal,
3970                       min(sizeof(title_data->title_key),
3971                           sizeof(authinfo->keychal)));
3972                 break;
3973         }
3974         case DVD_REPORT_ASF: {
3975                 struct scsi_report_key_data_asf *asf_data;
3976
3977                 asf_data = (struct scsi_report_key_data_asf *)databuf;
3978
3979                 authinfo->asf = asf_data->success & RKD_ASF_SUCCESS;
3980                 break;
3981         }
3982         case DVD_REPORT_RPC: {
3983                 struct scsi_report_key_data_rpc *rpc_data;
3984
3985                 rpc_data = (struct scsi_report_key_data_rpc *)databuf;
3986
3987                 authinfo->reg_type = (rpc_data->byte4 & RKD_RPC_TYPE_MASK) >>
3988                         RKD_RPC_TYPE_SHIFT;
3989                 authinfo->vend_rsts =
3990                         (rpc_data->byte4 & RKD_RPC_VENDOR_RESET_MASK) >>
3991                         RKD_RPC_VENDOR_RESET_SHIFT;
3992                 authinfo->user_rsts = rpc_data->byte4 & RKD_RPC_USER_RESET_MASK;
3993                 authinfo->region = rpc_data->region_mask;
3994                 authinfo->rpc_scheme = rpc_data->rpc_scheme1;
3995                 break;
3996         }
3997         case DVD_INVALIDATE_AGID:
3998                 break;
3999         default:
4000                 /* This should be impossible, since we checked above */
4001                 error = EINVAL;
4002                 goto bailout;
4003                 break; /* NOTREACHED */
4004         }
4005 bailout:
4006         if (databuf != NULL)
4007                 free(databuf, M_DEVBUF);
4008
4009         xpt_release_ccb(ccb);
4010
4011         return(error);
4012 }
4013
4014 static int
4015 cdsendkey(struct cam_periph *periph, struct dvd_authinfo *authinfo)
4016 {
4017         union ccb *ccb;
4018         u_int8_t *databuf;
4019         int length;
4020         int error;
4021
4022         error = 0;
4023         databuf = NULL;
4024
4025         ccb = cdgetccb(periph, /* priority */ 1);
4026
4027         switch(authinfo->format) {
4028         case DVD_SEND_CHALLENGE: {
4029                 struct scsi_report_key_data_challenge *challenge_data;
4030
4031                 length = sizeof(*challenge_data);
4032
4033                 challenge_data = malloc(length, M_DEVBUF, M_INTWAIT | M_ZERO);
4034
4035                 databuf = (u_int8_t *)challenge_data;
4036
4037                 scsi_ulto2b(length - sizeof(challenge_data->data_len),
4038                             challenge_data->data_len);
4039
4040                 bcopy(authinfo->keychal, challenge_data->challenge_key,
4041                       min(sizeof(authinfo->keychal),
4042                           sizeof(challenge_data->challenge_key)));
4043                 break;
4044         }
4045         case DVD_SEND_KEY2: {
4046                 struct scsi_report_key_data_key1_key2 *key2_data;
4047
4048                 length = sizeof(*key2_data);
4049
4050                 key2_data = malloc(length, M_DEVBUF, M_INTWAIT | M_ZERO);
4051
4052                 databuf = (u_int8_t *)key2_data;
4053
4054                 scsi_ulto2b(length - sizeof(key2_data->data_len),
4055                             key2_data->data_len);
4056
4057                 bcopy(authinfo->keychal, key2_data->key1,
4058                       min(sizeof(authinfo->keychal), sizeof(key2_data->key1)));
4059
4060                 break;
4061         }
4062         case DVD_SEND_RPC: {
4063                 struct scsi_send_key_data_rpc *rpc_data;
4064
4065                 length = sizeof(*rpc_data);
4066
4067                 rpc_data = malloc(length, M_DEVBUF, M_INTWAIT | M_ZERO);
4068
4069                 databuf = (u_int8_t *)rpc_data;
4070
4071                 scsi_ulto2b(length - sizeof(rpc_data->data_len),
4072                             rpc_data->data_len);
4073
4074                 rpc_data->region_code = authinfo->region;
4075                 break;
4076         }
4077         default:
4078                 error = EINVAL;
4079                 goto bailout;
4080                 break; /* NOTREACHED */
4081         }
4082
4083         scsi_send_key(&ccb->csio,
4084                       /* retries */ 1,
4085                       /* cbfcnp */ cddone,
4086                       /* tag_action */ MSG_SIMPLE_Q_TAG,
4087                       /* agid */ authinfo->agid,
4088                       /* key_format */ authinfo->format,
4089                       /* data_ptr */ databuf,
4090                       /* dxfer_len */ length,
4091                       /* sense_len */ SSD_FULL_SIZE,
4092                       /* timeout */ 50000);
4093
4094         error = cdrunccb(ccb, cderror, /*cam_flags*/0,
4095                          /*sense_flags*/SF_RETRY_UA | SF_RETRY_SELTO);
4096
4097 bailout:
4098
4099         if (databuf != NULL)
4100                 free(databuf, M_DEVBUF);
4101
4102         xpt_release_ccb(ccb);
4103
4104         return(error);
4105 }
4106
4107 static int
4108 cdreaddvdstructure(struct cam_periph *periph, struct dvd_struct *dvdstruct)
4109 {
4110         union ccb *ccb;
4111         u_int8_t *databuf;
4112         u_int32_t address;
4113         int error;
4114         int length;
4115
4116         error = 0;
4117         databuf = NULL;
4118         /* The address is reserved for many of the formats */
4119         address = 0;
4120
4121         ccb = cdgetccb(periph, /* priority */ 1);
4122
4123         switch(dvdstruct->format) {
4124         case DVD_STRUCT_PHYSICAL:
4125                 length = sizeof(struct scsi_read_dvd_struct_data_physical);
4126                 break;
4127         case DVD_STRUCT_COPYRIGHT:
4128                 length = sizeof(struct scsi_read_dvd_struct_data_copyright);
4129                 break;
4130         case DVD_STRUCT_DISCKEY:
4131                 length = sizeof(struct scsi_read_dvd_struct_data_disc_key);
4132                 break;
4133         case DVD_STRUCT_BCA:
4134                 length = sizeof(struct scsi_read_dvd_struct_data_bca);
4135                 break;
4136         case DVD_STRUCT_MANUFACT:
4137                 length = sizeof(struct scsi_read_dvd_struct_data_manufacturer);
4138                 break;
4139         case DVD_STRUCT_CMI:
4140                 error = ENODEV;
4141                 goto bailout;
4142 #ifdef notyet
4143                 length = sizeof(struct scsi_read_dvd_struct_data_copy_manage);
4144                 address = dvdstruct->address;
4145 #endif
4146                 break; /* NOTREACHED */
4147         case DVD_STRUCT_PROTDISCID:
4148                 length = sizeof(struct scsi_read_dvd_struct_data_prot_discid);
4149                 break;
4150         case DVD_STRUCT_DISCKEYBLOCK:
4151                 length = sizeof(struct scsi_read_dvd_struct_data_disc_key_blk);
4152                 break;
4153         case DVD_STRUCT_DDS:
4154                 length = sizeof(struct scsi_read_dvd_struct_data_dds);
4155                 break;
4156         case DVD_STRUCT_MEDIUM_STAT:
4157                 length = sizeof(struct scsi_read_dvd_struct_data_medium_status);
4158                 break;
4159         case DVD_STRUCT_SPARE_AREA:
4160                 length = sizeof(struct scsi_read_dvd_struct_data_spare_area);
4161                 break;
4162         case DVD_STRUCT_RMD_LAST:
4163                 error = ENODEV;
4164                 goto bailout;
4165 #ifdef notyet
4166                 length = sizeof(struct scsi_read_dvd_struct_data_rmd_borderout);
4167                 address = dvdstruct->address;
4168 #endif
4169                 break; /* NOTREACHED */
4170         case DVD_STRUCT_RMD_RMA:
4171                 error = ENODEV;
4172                 goto bailout;
4173 #ifdef notyet
4174                 length = sizeof(struct scsi_read_dvd_struct_data_rmd);
4175                 address = dvdstruct->address;
4176 #endif
4177                 break; /* NOTREACHED */
4178         case DVD_STRUCT_PRERECORDED:
4179                 length = sizeof(struct scsi_read_dvd_struct_data_leadin);
4180                 break;
4181         case DVD_STRUCT_UNIQUEID:
4182                 length = sizeof(struct scsi_read_dvd_struct_data_disc_id);
4183                 break;
4184         case DVD_STRUCT_DCB:
4185                 error = ENODEV;
4186                 goto bailout;
4187 #ifdef notyet
4188                 length = sizeof(struct scsi_read_dvd_struct_data_dcb);
4189                 address = dvdstruct->address;
4190 #endif
4191                 break; /* NOTREACHED */
4192         case DVD_STRUCT_LIST:
4193                 /*
4194                  * This is the maximum allocation length for the READ DVD
4195                  * STRUCTURE command.  There's nothing in the MMC3 spec
4196                  * that indicates a limit in the amount of data that can
4197                  * be returned from this call, other than the limits
4198                  * imposed by the 2-byte length variables.
4199                  */
4200                 length = 65535;
4201                 break;
4202         default:
4203                 error = EINVAL;
4204                 goto bailout;
4205                 break; /* NOTREACHED */
4206         }
4207
4208         if (length != 0) {
4209                 databuf = malloc(length, M_DEVBUF, M_INTWAIT | M_ZERO);
4210         } else {
4211                 databuf = NULL;
4212         }
4213
4214         scsi_read_dvd_structure(&ccb->csio,
4215                                 /* retries */ 1,
4216                                 /* cbfcnp */ cddone,
4217                                 /* tag_action */ MSG_SIMPLE_Q_TAG,
4218                                 /* lba */ address,
4219                                 /* layer_number */ dvdstruct->layer_num,
4220                                 /* key_format */ dvdstruct->format,
4221                                 /* agid */ dvdstruct->agid,
4222                                 /* data_ptr */ databuf,
4223                                 /* dxfer_len */ length,
4224                                 /* sense_len */ SSD_FULL_SIZE,
4225                                 /* timeout */ 50000);
4226
4227         error = cdrunccb(ccb, cderror, /*cam_flags*/0,
4228                          /*sense_flags*/SF_RETRY_UA | SF_RETRY_SELTO);
4229
4230         if (error != 0)
4231                 goto bailout;
4232
4233         switch(dvdstruct->format) {
4234         case DVD_STRUCT_PHYSICAL: {
4235                 struct scsi_read_dvd_struct_data_layer_desc *inlayer;
4236                 struct dvd_layer *outlayer;
4237                 struct scsi_read_dvd_struct_data_physical *phys_data;
4238
4239                 phys_data =
4240                         (struct scsi_read_dvd_struct_data_physical *)databuf;
4241                 inlayer = &phys_data->layer_desc;
4242                 outlayer = (struct dvd_layer *)&dvdstruct->data;
4243
4244                 dvdstruct->length = sizeof(*inlayer);
4245
4246                 outlayer->book_type = (inlayer->book_type_version &
4247                         RDSD_BOOK_TYPE_MASK) >> RDSD_BOOK_TYPE_SHIFT;
4248                 outlayer->book_version = (inlayer->book_type_version &
4249                         RDSD_BOOK_VERSION_MASK);
4250                 outlayer->disc_size = (inlayer->disc_size_max_rate &
4251                         RDSD_DISC_SIZE_MASK) >> RDSD_DISC_SIZE_SHIFT;
4252                 outlayer->max_rate = (inlayer->disc_size_max_rate &
4253                         RDSD_MAX_RATE_MASK);
4254                 outlayer->nlayers = (inlayer->layer_info &
4255                         RDSD_NUM_LAYERS_MASK) >> RDSD_NUM_LAYERS_SHIFT;
4256                 outlayer->track_path = (inlayer->layer_info &
4257                         RDSD_TRACK_PATH_MASK) >> RDSD_TRACK_PATH_SHIFT;
4258                 outlayer->layer_type = (inlayer->layer_info &
4259                         RDSD_LAYER_TYPE_MASK);
4260                 outlayer->linear_density = (inlayer->density &
4261                         RDSD_LIN_DENSITY_MASK) >> RDSD_LIN_DENSITY_SHIFT;
4262                 outlayer->track_density = (inlayer->density &
4263                         RDSD_TRACK_DENSITY_MASK);
4264                 outlayer->bca = (inlayer->bca & RDSD_BCA_MASK) >>
4265                         RDSD_BCA_SHIFT;
4266                 outlayer->start_sector = scsi_3btoul(inlayer->main_data_start);
4267                 outlayer->end_sector = scsi_3btoul(inlayer->main_data_end);
4268                 outlayer->end_sector_l0 =
4269                         scsi_3btoul(inlayer->end_sector_layer0);
4270                 break;
4271         }
4272         case DVD_STRUCT_COPYRIGHT: {
4273                 struct scsi_read_dvd_struct_data_copyright *copy_data;
4274
4275                 copy_data = (struct scsi_read_dvd_struct_data_copyright *)
4276                         databuf;
4277
4278                 dvdstruct->cpst = copy_data->cps_type;
4279                 dvdstruct->rmi = copy_data->region_info;
4280                 dvdstruct->length = 0;
4281
4282                 break;
4283         }
4284         default:
4285                 /*
4286                  * Tell the user what the overall length is, no matter
4287                  * what we can actually fit in the data buffer.
4288                  */
4289                 dvdstruct->length = length - ccb->csio.resid -
4290                         sizeof(struct scsi_read_dvd_struct_data_header);
4291
4292                 /*
4293                  * But only actually copy out the smaller of what we read
4294                  * in or what the structure can take.
4295                  */
4296                 bcopy(databuf + sizeof(struct scsi_read_dvd_struct_data_header),
4297                       dvdstruct->data,
4298                       min(sizeof(dvdstruct->data), dvdstruct->length));
4299                 break;
4300         }
4301 bailout:
4302
4303         if (databuf != NULL)
4304                 free(databuf, M_DEVBUF);
4305
4306         xpt_release_ccb(ccb);
4307
4308         return(error);
4309 }
4310
4311 void
4312 scsi_report_key(struct ccb_scsiio *csio, u_int32_t retries,
4313                 void (*cbfcnp)(struct cam_periph *, union ccb *),
4314                 u_int8_t tag_action, u_int32_t lba, u_int8_t agid,
4315                 u_int8_t key_format, u_int8_t *data_ptr, u_int32_t dxfer_len,
4316                 u_int8_t sense_len, u_int32_t timeout)
4317 {
4318         struct scsi_report_key *scsi_cmd;
4319
4320         scsi_cmd = (struct scsi_report_key *)&csio->cdb_io.cdb_bytes;
4321         bzero(scsi_cmd, sizeof(*scsi_cmd));
4322         scsi_cmd->opcode = REPORT_KEY;
4323         scsi_ulto4b(lba, scsi_cmd->lba);
4324         scsi_ulto2b(dxfer_len, scsi_cmd->alloc_len);
4325         scsi_cmd->agid_keyformat = (agid << RK_KF_AGID_SHIFT) |
4326                 (key_format & RK_KF_KEYFORMAT_MASK);
4327
4328         cam_fill_csio(csio,
4329                       retries,
4330                       cbfcnp,
4331                       /*flags*/ (dxfer_len == 0) ? CAM_DIR_NONE : CAM_DIR_IN,
4332                       tag_action,
4333                       /*data_ptr*/ data_ptr,
4334                       /*dxfer_len*/ dxfer_len,
4335                       sense_len,
4336                       sizeof(*scsi_cmd),
4337                       timeout);
4338 }
4339
4340 void
4341 scsi_send_key(struct ccb_scsiio *csio, u_int32_t retries,
4342               void (*cbfcnp)(struct cam_periph *, union ccb *),
4343               u_int8_t tag_action, u_int8_t agid, u_int8_t key_format,
4344               u_int8_t *data_ptr, u_int32_t dxfer_len, u_int8_t sense_len,
4345               u_int32_t timeout)
4346 {
4347         struct scsi_send_key *scsi_cmd;
4348
4349         scsi_cmd = (struct scsi_send_key *)&csio->cdb_io.cdb_bytes;
4350         bzero(scsi_cmd, sizeof(*scsi_cmd));
4351         scsi_cmd->opcode = SEND_KEY;
4352
4353         scsi_ulto2b(dxfer_len, scsi_cmd->param_len);
4354         scsi_cmd->agid_keyformat = (agid << RK_KF_AGID_SHIFT) |
4355                 (key_format & RK_KF_KEYFORMAT_MASK);
4356
4357         cam_fill_csio(csio,
4358                       retries,
4359                       cbfcnp,
4360                       /*flags*/ CAM_DIR_OUT,
4361                       tag_action,
4362                       /*data_ptr*/ data_ptr,
4363                       /*dxfer_len*/ dxfer_len,
4364                       sense_len,
4365                       sizeof(*scsi_cmd),
4366                       timeout);
4367 }
4368
4369
4370 void
4371 scsi_read_dvd_structure(struct ccb_scsiio *csio, u_int32_t retries,
4372                         void (*cbfcnp)(struct cam_periph *, union ccb *),
4373                         u_int8_t tag_action, u_int32_t address,
4374                         u_int8_t layer_number, u_int8_t format, u_int8_t agid,
4375                         u_int8_t *data_ptr, u_int32_t dxfer_len,
4376                         u_int8_t sense_len, u_int32_t timeout)
4377 {
4378         struct scsi_read_dvd_structure *scsi_cmd;
4379
4380         scsi_cmd = (struct scsi_read_dvd_structure *)&csio->cdb_io.cdb_bytes;
4381         bzero(scsi_cmd, sizeof(*scsi_cmd));
4382         scsi_cmd->opcode = READ_DVD_STRUCTURE;
4383
4384         scsi_ulto4b(address, scsi_cmd->address);
4385         scsi_cmd->layer_number = layer_number;
4386         scsi_cmd->format = format;
4387         scsi_ulto2b(dxfer_len, scsi_cmd->alloc_len);
4388         /* The AGID is the top two bits of this byte */
4389         scsi_cmd->agid = agid << 6;
4390
4391         cam_fill_csio(csio,
4392                       retries,
4393                       cbfcnp,
4394                       /*flags*/ CAM_DIR_IN,
4395                       tag_action,
4396                       /*data_ptr*/ data_ptr,
4397                       /*dxfer_len*/ dxfer_len,
4398                       sense_len,
4399                       sizeof(*scsi_cmd),
4400                       timeout);
4401 }