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  */
  29 /*
  30  * Portions of this driver taken from the original FreeBSD cd driver.
  31  * Written by Julian Elischer (julian@tfs.com)
  32  * for TRW Financial Systems for use under the MACH(2.5) operating system.
  33  *
  34  * TRW Financial Systems, in accordance with their agreement with Carnegie
  35  * Mellon University, makes this software available to CMU to distribute
  36  * or use in any manner that they see fit as long as this message is kept with
  37  * the software. For this reason TFS also grants any other persons or
  38  * organisations permission to use or modify this software.
  39  *
  40  * TFS supplies this software to be publicly redistributed
  41  * on the understanding that TFS is not responsible for the correct
  42  * functioning of this software in any circumstances.
  43  *
  44  * Ported to run under 386BSD by Julian Elischer (julian@tfs.com) Sept 1992
  45  *
  46  *      from: cd.c,v 1.83 1997/05/04 15:24:22 joerg Exp $
  47  */
  48
  49 #include "opt_cd.h"
  50
  51 #include <sys/param.h>
  52 #include <sys/systm.h>
  53 #include <sys/kernel.h>
  54 #include <sys/buf.h>
  55 #include <sys/conf.h>
  56 #include <sys/disk.h>
  57 #include <sys/dtype.h>
  58 #include <sys/malloc.h>
  59 #include <sys/cdio.h>
  60 #include <sys/cdrio.h>
  61 #include <sys/dvdio.h>
  62 #include <sys/devicestat.h>
  63 #include <sys/sysctl.h>
  64 #include <sys/taskqueue.h>
  65 #include <sys/proc.h>
  66 #include <sys/camlib.h>
  67 #include <sys/udev.h>
  68
  69 #include <sys/buf2.h>
  70 #include <sys/thread2.h>
  71 #include <sys/mplock2.h>
  72
  73 #include "../cam.h"
  74 #include "../cam_ccb.h"
  75 #include "../cam_extend.h"
  76 #include "../cam_periph.h"
  77 #include "../cam_xpt_periph.h"
  78 #include "../cam_queue.h"
  79 #include "../cam_sim.h"
  80
  81 #include "scsi_message.h"
  82 #include "scsi_da.h"
  83 #include "scsi_cd.h"
  84
  85 #define LEADOUT         0xaa            /* leadout toc entry */
  86
  87 struct cd_params {
  88         u_int32_t blksize;
  89         u_long    disksize;
  90 };
  91
  92 typedef enum {
  93         CD_Q_NONE               = 0x00,
  94         CD_Q_NO_TOUCH           = 0x01,
  95         CD_Q_BCD_TRACKS         = 0x02,
  96         CD_Q_NO_CHANGER         = 0x04,
  97         CD_Q_CHANGER            = 0x08,
  98         CD_Q_10_BYTE_ONLY       = 0x10
  99 } cd_quirks;
 100
 101 typedef enum {
 102         CD_FLAG_INVALID         = 0x0001,
 103         CD_FLAG_NEW_DISC        = 0x0002,
 104         CD_FLAG_DISC_LOCKED     = 0x0004,
 105         CD_FLAG_DISC_REMOVABLE  = 0x0008,
 106         CD_FLAG_TAGGED_QUEUING  = 0x0010,
 107         CD_FLAG_CHANGER         = 0x0040,
 108         CD_FLAG_ACTIVE          = 0x0080,
 109         CD_FLAG_SCHED_ON_COMP   = 0x0100,
 110         CD_FLAG_RETRY_UA        = 0x0200,
 111         CD_FLAG_VALID_MEDIA     = 0x0400,
 112         CD_FLAG_VALID_TOC       = 0x0800,
 113         CD_FLAG_SCTX_INIT       = 0x1000,
 114         CD_FLAG_OPEN            = 0x2000
 115 } cd_flags;
 116
 117 typedef enum {
 118         CD_CCB_PROBE            = 0x01,
 119         CD_CCB_BUFFER_IO        = 0x02,
 120         CD_CCB_WAITING          = 0x03,
 121         CD_CCB_TYPE_MASK        = 0x0F,
 122         CD_CCB_RETRY_UA         = 0x10
 123 } cd_ccb_state;
 124
 125 typedef enum {
 126         CHANGER_TIMEOUT_SCHED           = 0x01,
 127         CHANGER_SHORT_TMOUT_SCHED       = 0x02,
 128         CHANGER_MANUAL_CALL             = 0x04,
 129         CHANGER_NEED_TIMEOUT            = 0x08
 130 } cd_changer_flags;
 131
 132 #define ccb_state ppriv_field0
 133 #define ccb_bio ppriv_ptr1
 134
 135 struct cd_tocdata {
 136         struct ioc_toc_header header;
 137         struct cd_toc_entry entries[100];
 138 };
 139
 140 struct cd_toc_single {
 141         struct ioc_toc_header header;
 142         struct cd_toc_entry entry;
 143 };
 144
 145 typedef enum {
 146         CD_STATE_PROBE,
 147         CD_STATE_NORMAL
 148 } cd_state;
 149
 150 struct cd_softc {
 151         cam_pinfo               pinfo;
 152         cd_state                state;
 153         volatile cd_flags       flags;
 154         struct bio_queue_head   bio_queue;
 155         LIST_HEAD(, ccb_hdr)    pending_ccbs;
 156         struct cd_params        params;
 157         struct disk             disk;
 158         union ccb               saved_ccb;
 159         cd_quirks               quirks;
 160         struct devstat          device_stats;
 161         STAILQ_ENTRY(cd_softc)  changer_links;
 162         struct cdchanger        *changer;
 163         int                     bufs_left;
 164         struct cam_periph       *periph;
 165         int                     minimum_command_size;
 166         int                     outstanding_cmds;
 167         struct task             sysctl_task;
 168         struct sysctl_ctx_list  sysctl_ctx;
 169         struct sysctl_oid       *sysctl_tree;
 170         STAILQ_HEAD(, cd_mode_params)   mode_queue;
 171         struct cd_tocdata       toc;
 172 };
 173
 174 struct cd_page_sizes {
 175         int page;
 176         int page_size;
 177 };
 178
 179 static struct cd_page_sizes cd_page_size_table[] =
 180 {
 181         { AUDIO_PAGE, sizeof(struct cd_audio_page)}
 182 };
 183
 184 struct cd_quirk_entry {
 185         struct scsi_inquiry_pattern inq_pat;
 186         cd_quirks quirks;
 187 };
 188
 189 /*
 190  * The changer quirk entries aren't strictly necessary.  Basically, what
 191  * they do is tell cdregister() up front that a device is a changer.
 192  * Otherwise, it will figure that fact out once it sees a LUN on the device
 193  * that is greater than 0.  If it is known up front that a device is a changer,
 194  * all I/O to the device will go through the changer scheduling routines, as
 195  * opposed to the "normal" CD code.
 196  *
 197  * NOTE ON 10_BYTE_ONLY quirks:  Any 10_BYTE_ONLY quirks MUST be because
 198  * your device hangs when it gets a 10 byte command.  Adding a quirk just
 199  * to get rid of the informative diagnostic message is not acceptable.  All
 200  * 10_BYTE_ONLY quirks must be documented in full in a PR (which should be
 201  * referenced in a comment along with the quirk) , and must be approved by
 202  * ken@FreeBSD.org.  Any quirks added that don't adhere to this policy may
 203  * be removed until the submitter can explain why they are needed.
 204  * 10_BYTE_ONLY quirks will be removed (as they will no longer be necessary)
 205  * when the CAM_NEW_TRAN_CODE work is done.
 206  */
 207 static struct cd_quirk_entry cd_quirk_table[] =
 208 {
 209         {
 210                 { T_CDROM, SIP_MEDIA_REMOVABLE, "NRC", "MBR-7", "*"},
 211                  /*quirks*/ CD_Q_CHANGER
 212         },
 213         {
 214                 { T_CDROM, SIP_MEDIA_REMOVABLE, "PIONEER", "CD-ROM DRM*",
 215                   "*"}, /* quirks */ CD_Q_CHANGER
 216         },
 217         {
 218                 { T_CDROM, SIP_MEDIA_REMOVABLE, "NAKAMICH", "MJ-*", "*"},
 219                  /* quirks */ CD_Q_CHANGER
 220         },
 221         {
 222                 { T_CDROM, SIP_MEDIA_REMOVABLE, "CHINON", "CD-ROM CDS-535","*"},
 223                 /* quirks */ CD_Q_BCD_TRACKS
 224         }
 225 };
 226
 227 static  d_open_t        cdopen;
 228 static  d_close_t       cdclose;
 229 static  d_ioctl_t       cdioctl;
 230 static  d_strategy_t    cdstrategy;
 231
 232 static  periph_init_t   cdinit;
 233 static  periph_ctor_t   cdregister;
 234 static  periph_dtor_t   cdcleanup;
 235 static  periph_start_t  cdstart;
 236 static  periph_oninv_t  cdoninvalidate;
 237 static  void            cdasync(void *callback_arg, u_int32_t code,
 238                                 struct cam_path *path, void *arg);
 239 static  int             cdcmdsizesysctl(SYSCTL_HANDLER_ARGS);
 240 static  void            cdshorttimeout(void *arg);
 241 static  void            cdschedule(struct cam_periph *periph, int priority);
 242 static  void            cdrunchangerqueue(void *arg);
 243 static  void            cdchangerschedule(struct cd_softc *softc);
 244 static  int             cdrunccb(union ccb *ccb,
 245                                  int (*error_routine)(union ccb *ccb,
 246                                                       u_int32_t cam_flags,
 247                                                       u_int32_t sense_flags),
 248                                  u_int32_t cam_flags, u_int32_t sense_flags);
 249 static union    ccb     *cdgetccb(struct cam_periph *periph,
 250                                   u_int32_t priority);
 251 static  void            cddone(struct cam_periph *periph,
 252                                union ccb *start_ccb);
 253 static  int             cderror(union ccb *ccb, u_int32_t cam_flags,
 254                                 u_int32_t sense_flags);
 255 static  union cd_pages  *cdgetpage(struct cd_mode_params *mode_params);
 256 static  int             cdgetpagesize(int page_num);
 257 static  void            cdprevent(struct cam_periph *periph, int action);
 258 static  int             cdcheckmedia(struct cam_periph *periph);
 259 static  int             cdsize(struct cam_periph *periph, u_int32_t *size);
 260 static  int             cd6byteworkaround(union ccb *ccb);
 261 static  int             cdreadtoc(struct cam_periph *periph, u_int32_t mode,
 262                                   u_int32_t start, u_int8_t *data,
 263                                   u_int32_t len, u_int32_t sense_flags);
 264 static  int             cdgetmode(struct cam_periph *periph,
 265                                   struct cd_mode_params *data, u_int32_t page);
 266 static  int             cdsetmode(struct cam_periph *periph,
 267                                   struct cd_mode_params *data);
 268 static  int             cdplay(struct cam_periph *periph, u_int32_t blk,
 269                                u_int32_t len);
 270 static  int             cdreadsubchannel(struct cam_periph *periph,
 271                                          u_int32_t mode, u_int32_t format,
 272                                          int track,
 273                                          struct cd_sub_channel_info *data,
 274                                          u_int32_t len);
 275 static  int             cdplaymsf(struct cam_periph *periph, u_int32_t startm,
 276                                   u_int32_t starts, u_int32_t startf,
 277                                   u_int32_t endm, u_int32_t ends,
 278                                   u_int32_t endf);
 279 static  int             cdplaytracks(struct cam_periph *periph,
 280                                      u_int32_t strack, u_int32_t sindex,
 281                                      u_int32_t etrack, u_int32_t eindex);
 282 static  int             cdpause(struct cam_periph *periph, u_int32_t go);
 283 static  int             cdstopunit(struct cam_periph *periph, u_int32_t eject);
 284 static  int             cdstartunit(struct cam_periph *periph, int load);
 285 static  int             cdsetspeed(struct cam_periph *periph,
 286                                    u_int32_t rdspeed, u_int32_t wrspeed);
 287 static  int             cdreportkey(struct cam_periph *periph,
 288                                     struct dvd_authinfo *authinfo);
 289 static  int             cdsendkey(struct cam_periph *periph,
 290                                   struct dvd_authinfo *authinfo);
 291 static  int             cdreaddvdstructure(struct cam_periph *periph,
 292                                            struct dvd_struct *dvdstruct);
 293
 294 static struct periph_driver cddriver =
 295 {
 296         cdinit, "cd",
 297         TAILQ_HEAD_INITIALIZER(cddriver.units), /* generation */ 0
 298 };
 299
 300 PERIPHDRIVER_DECLARE(cd, cddriver);
 301
 302 static struct dev_ops cd_ops = {
 303         { "cd", 0, D_DISK | D_MPSAFE },
 304         .d_open = cdopen,
 305         .d_close = cdclose,
 306         .d_read = physread,
 307         .d_write = physwrite,
 308         .d_ioctl = cdioctl,
 309         .d_strategy = cdstrategy
 310 };
 311
 312 static struct extend_array *cdperiphs;
 313
 314 #ifndef CHANGER_MIN_BUSY_SECONDS
 315 #define CHANGER_MIN_BUSY_SECONDS        5
 316 #endif
 317 #ifndef CHANGER_MAX_BUSY_SECONDS
 318 #define CHANGER_MAX_BUSY_SECONDS        15
 319 #endif
 320
 321 static int changer_min_busy_seconds = CHANGER_MIN_BUSY_SECONDS;
 322 static int changer_max_busy_seconds = CHANGER_MAX_BUSY_SECONDS;
 323
 324 SYSCTL_NODE(_kern_cam, OID_AUTO, cd, CTLFLAG_RD, 0, "CAM CDROM driver");
 325 SYSCTL_NODE(_kern_cam_cd, OID_AUTO, changer, CTLFLAG_RD, 0, "CD Changer");
 326 SYSCTL_INT(_kern_cam_cd_changer, OID_AUTO, min_busy_seconds, CTLFLAG_RW,
 327            &changer_min_busy_seconds, 0, "Minimum changer scheduling quantum");
 328 TUNABLE_INT("kern.cam.cd.changer.min_busy_seconds", &changer_min_busy_seconds);
 329 SYSCTL_INT(_kern_cam_cd_changer, OID_AUTO, max_busy_seconds, CTLFLAG_RW,
 330            &changer_max_busy_seconds, 0, "Maximum changer scheduling quantum");
 331 TUNABLE_INT("kern.cam.cd.changer.max_busy_seconds", &changer_max_busy_seconds);
 332
 333 struct cdchanger {
 334         path_id_t                        path_id;
 335         target_id_t                      target_id;
 336         int                              num_devices;
 337         struct camq                      devq;
 338         struct timeval                   start_time;
 339         struct cd_softc                  *cur_device;
 340         struct callout                   short_handle;
 341         struct callout                   long_handle;
 342         volatile cd_changer_flags        flags;
 343         STAILQ_ENTRY(cdchanger)          changer_links;
 344         STAILQ_HEAD(chdevlist, cd_softc) chluns;
 345 };
 346
 347 static struct lock changerq_lock;
 348 static STAILQ_HEAD(changerlist, cdchanger) changerq;
 349 static int num_changers;
 350
 351 MALLOC_DEFINE(M_SCSICD, "scsi_cd", "scsi_cd buffers");
 352
 353 static void
 354 cdinit(void)
 355 {
 356         cam_status status;
 357
 358         lockinit(&changerq_lock, "cdchangerq", 0, LK_CANRECURSE);
 359         STAILQ_INIT(&changerq);
 360
 361         /*
 362          * Create our extend array for storing the devices we attach to.
 363          */
 364         cdperiphs = cam_extend_new();
 365         if (cdperiphs == NULL) {
 366                 kprintf("cd: Failed to alloc extend array!\n");
 367                 return;
 368         }
 369
 370         /*
 371          * Install a global async callback.  This callback will
 372          * receive async callbacks like "new device found".
 373          */
 374         status = xpt_register_async(AC_FOUND_DEVICE, cdasync, NULL, NULL);
 375
 376         if (status != CAM_REQ_CMP) {
 377                 kprintf("cd: Failed to attach master async callback "
 378                        "due to status 0x%x!\n", status);
 379         }
 380 }
 381
 382 static void
 383 cdoninvalidate(struct cam_periph *periph)
 384 {
 385         struct cd_softc *softc;
 386         struct buf *q_bp;
 387         struct bio *q_bio;
 388
 389         softc = (struct cd_softc *)periph->softc;
 390
 391         /*
 392          * De-register any async callbacks.
 393          */
 394         xpt_register_async(0, cdasync, periph, periph->path);
 395
 396         softc->flags |= CD_FLAG_INVALID;
 397
 398         /*
 399          * Return all queued I/O with ENXIO.
 400          * XXX Handle any transactions queued to the card
 401          *     with XPT_ABORT_CCB.
 402          */
 403         while ((q_bio = bioq_takefirst(&softc->bio_queue)) != NULL) {
 404                 q_bp = q_bio->bio_buf;
 405                 q_bp->b_resid = q_bp->b_bcount;
 406                 q_bp->b_error = ENXIO;
 407                 q_bp->b_flags |= B_ERROR;
 408                 biodone(q_bio);
 409         }
 410
 411         /*
 412          * If this device is part of a changer, and it was scheduled
 413          * to run, remove it from the run queue since we just nuked
 414          * all of its scheduled I/O.
 415          */
 416         if ((softc->flags & CD_FLAG_CHANGER)
 417          && (softc->pinfo.index != CAM_UNQUEUED_INDEX))
 418                 camq_remove(&softc->changer->devq, softc->pinfo.index);
 419
 420         xpt_print(periph->path, "lost device\n");
 421 }
 422
 423 static void
 424 cdcleanup(struct cam_periph *periph)
 425 {
 426         struct cd_softc *softc;
 427
 428         softc = (struct cd_softc *)periph->softc;
 429
 430         xpt_print(periph->path, "removing device entry\n");
 431
 432         if ((softc->flags & CD_FLAG_SCTX_INIT) != 0
 433             && sysctl_ctx_free(&softc->sysctl_ctx) != 0) {
 434                 xpt_print(periph->path, "can't remove sysctl context\n");
 435         }
 436
 437         /*
 438          * In the queued, non-active case, the device in question
 439          * has already been removed from the changer run queue.  Since this
 440          * device is active, we need to de-activate it, and schedule
 441          * another device to run.  (if there is another one to run)
 442          */
 443         if ((softc->flags & CD_FLAG_CHANGER)
 444          && (softc->flags & CD_FLAG_ACTIVE)) {
 445
 446                 /*
 447                  * The purpose of the short timeout is soley to determine
 448                  * whether the current device has finished or not.  Well,
 449                  * since we're removing the active device, we know that it
 450                  * is finished.  So, get rid of the short timeout.
 451                  * Otherwise, if we're in the time period before the short
 452                  * timeout fires, and there are no other devices in the
 453                  * queue to run, there won't be any other device put in the
 454                  * active slot.  i.e., when we call cdrunchangerqueue()
 455                  * below, it won't do anything.  Then, when the short
 456                  * timeout fires, it'll look at the "current device", which
 457                  * we are free below, and possibly panic the kernel on a
 458                  * bogus pointer reference.
 459                  *
 460                  * The long timeout doesn't really matter, since we
 461                  * decrement the qfrozen_cnt to indicate that there is
 462                  * nothing in the active slot now.  Therefore, there won't
 463                  * be any bogus pointer references there.
 464                  */
 465                 if (softc->changer->flags & CHANGER_SHORT_TMOUT_SCHED) {
 466                         callout_stop(&softc->changer->short_handle);
 467                         softc->changer->flags &= ~CHANGER_SHORT_TMOUT_SCHED;
 468                 }
 469                 softc->changer->devq.qfrozen_cnt--;
 470                 softc->changer->flags |= CHANGER_MANUAL_CALL;
 471                 cdrunchangerqueue(softc->changer);
 472         }
 473
 474         /*
 475          * If we're removing the last device on the changer, go ahead and
 476          * remove the changer device structure.
 477          */
 478         if ((softc->flags & CD_FLAG_CHANGER)
 479          && (--softc->changer->num_devices == 0)) {
 480
 481                 /*
 482                  * Theoretically, there shouldn't be any timeouts left, but
 483                  * I'm not completely sure that that will be the case.  So,
 484                  * it won't hurt to check and see if there are any left.
 485                  */
 486                 if (softc->changer->flags & CHANGER_TIMEOUT_SCHED) {
 487                         callout_stop(&softc->changer->long_handle);
 488                         softc->changer->flags &= ~CHANGER_TIMEOUT_SCHED;
 489                 }
 490
 491                 if (softc->changer->flags & CHANGER_SHORT_TMOUT_SCHED) {
 492                         callout_stop(&softc->changer->short_handle);
 493                         softc->changer->flags &= ~CHANGER_SHORT_TMOUT_SCHED;
 494                 }
 495
 496                 lockmgr(&changerq_lock, LK_EXCLUSIVE);
 497                 STAILQ_REMOVE(&changerq, softc->changer, cdchanger,
 498                               changer_links);
 499                 num_changers--;
 500                 lockmgr(&changerq_lock, LK_RELEASE);
 501                 xpt_print(periph->path, "removing changer entry\n");
 502                 kfree(softc->changer, M_DEVBUF);
 503         }
 504         devstat_remove_entry(&softc->device_stats);
 505         cam_extend_release(cdperiphs, periph->unit_number);
 506         if (softc->disk.d_rawdev) {
 507                 cam_periph_unlock(periph);
 508                 disk_destroy(&softc->disk);
 509                 cam_periph_lock(periph);
 510         }
 511         kfree(softc, M_DEVBUF);
 512 }
 513
 514 static void
 515 cdasync(void *callback_arg, u_int32_t code,
 516         struct cam_path *path, void *arg)
 517 {
 518         struct cam_periph *periph;
 519
 520         periph = (struct cam_periph *)callback_arg;
 521
 522         switch (code) {
 523         case AC_FOUND_DEVICE:
 524         {
 525                 struct ccb_getdev *cgd;
 526                 cam_status status;
 527
 528                 cgd = (struct ccb_getdev *)arg;
 529                 if (cgd == NULL)
 530                         break;
 531
 532                 if (SID_TYPE(&cgd->inq_data) != T_CDROM
 533                     && SID_TYPE(&cgd->inq_data) != T_WORM)
 534                         break;
 535
 536                 /*
 537                  * Don't complain if a valid peripheral is already attached.
 538                  */
 539                 periph = cam_periph_find(cgd->ccb_h.path, "cd");
 540                 if (periph && (periph->flags & CAM_PERIPH_INVALID) == 0)
 541                         break;
 542
 543                 /*
 544                  * Allocate a peripheral instance for
 545                  * this device and start the probe
 546                  * process.
 547                  */
 548                 status = cam_periph_alloc(cdregister, cdoninvalidate,
 549                                           cdcleanup, cdstart,
 550                                           "cd", CAM_PERIPH_BIO,
 551                                           cgd->ccb_h.path, cdasync,
 552                                           AC_FOUND_DEVICE, cgd);
 553
 554                 if (status != CAM_REQ_CMP && status != CAM_REQ_INPROG) {
 555                         kprintf("cdasync: Unable to attach new device "
 556                                "due to status 0x%x\n", status);
 557                 }
 558                 break;
 559         }
 560         case AC_SENT_BDR:
 561         case AC_BUS_RESET:
 562         {
 563                 struct cd_softc *softc;
 564                 struct ccb_hdr *ccbh;
 565
 566                 softc = (struct cd_softc *)periph->softc;
 567                 /*
 568                  * Don't fail on the expected unit attention
 569                  * that will occur.
 570                  */
 571                 softc->flags |= CD_FLAG_RETRY_UA;
 572                 LIST_FOREACH(ccbh, &softc->pending_ccbs, periph_links.le)
 573                         ccbh->ccb_state |= CD_CCB_RETRY_UA;
 574                 /* FALLTHROUGH */
 575         }
 576         default:
 577                 cam_periph_async(periph, code, path, arg);
 578                 break;
 579         }
 580 }
 581
 582 static void
 583 cdsysctlinit(void *context, int pending)
 584 {
 585         struct cam_periph *periph;
 586         struct cd_softc *softc;
 587         char tmpstr[80], tmpstr2[80];
 588
 589         get_mplock();
 590         periph = (struct cam_periph *)context;
 591         if (cam_periph_acquire(periph) != CAM_REQ_CMP) {
 592                 rel_mplock();
 593                 return;
 594         }
 595
 596         softc = (struct cd_softc *)periph->softc;
 597         ksnprintf(tmpstr, sizeof(tmpstr),
 598                   "CAM CD unit %d", periph->unit_number);
 599         ksnprintf(tmpstr2, sizeof(tmpstr2),
 600                   "%d", periph->unit_number);
 601
 602         sysctl_ctx_free(&softc->sysctl_ctx);
 603         sysctl_ctx_init(&softc->sysctl_ctx);
 604         softc->flags |= CD_FLAG_SCTX_INIT;
 605         softc->sysctl_tree = SYSCTL_ADD_NODE(&softc->sysctl_ctx,
 606         SYSCTL_STATIC_CHILDREN(_kern_cam_cd), OID_AUTO,
 607         tmpstr2, CTLFLAG_RD, 0, tmpstr);
 608
 609         if (softc->sysctl_tree == NULL) {
 610                 kprintf("cdsysctlinit: unable to allocate sysctl tree\n");
 611                 cam_periph_release(periph);
 612                 rel_mplock();
 613                 return;
 614         }
 615
 616         /*
 617          * Now register the sysctl handler, so the user can the value on
 618          * the fly.
 619          */
 620         SYSCTL_ADD_PROC(&softc->sysctl_ctx,SYSCTL_CHILDREN(softc->sysctl_tree),
 621                         OID_AUTO, "minimum_cmd_size", CTLTYPE_INT | CTLFLAG_RW,
 622                         &softc->minimum_command_size, 0, cdcmdsizesysctl, "I",
 623                         "Minimum CDB size");
 624
 625         cam_periph_release(periph);
 626         rel_mplock();
 627 }
 628
 629 /*
 630  * We have a handler function for this so we can check the values when the
 631  * user sets them, instead of every time we look at them.
 632  */
 633 static int
 634 cdcmdsizesysctl(SYSCTL_HANDLER_ARGS)
 635 {
 636         int error, value;
 637
 638         value = *(int *)arg1;
 639
 640         error = sysctl_handle_int(oidp, &value, 0, req);
 641
 642         if ((error != 0) || (req->newptr == NULL))
 643                 return (error);
 644
 645         /*
 646          * The only real values we can have here are 6 or 10.  I don't
 647          * really forsee having 12 be an option at any time in the future.
 648          * So if the user sets something less than or equal to 6, we'll set
 649          * it to 6.  If he sets something greater than 6, we'll set it to 10.
 650          *
 651          * I suppose we could just return an error here for the wrong values,
 652          * but I don't think it's necessary to do so, as long as we can
 653          * determine the user's intent without too much trouble.
 654          */
 655         if (value < 6)
 656                 value = 6;
 657         else if (value > 6)
 658                 value = 10;
 659
 660         *(int *)arg1 = value;
 661
 662         return (0);
 663 }
 664
 665
 666 static cam_status
 667 cdregister(struct cam_periph *periph, void *arg)
 668 {
 669         struct cd_softc *softc;
 670         struct ccb_pathinq cpi;
 671         struct ccb_getdev *cgd;
 672         char tmpstr[80];
 673         caddr_t match;
 674
 675         cgd = (struct ccb_getdev *)arg;
 676         if (periph == NULL) {
 677                 kprintf("cdregister: periph was NULL!!\n");
 678                 return(CAM_REQ_CMP_ERR);
 679         }
 680         if (cgd == NULL) {
 681                 kprintf("cdregister: no getdev CCB, can't register device\n");
 682                 return(CAM_REQ_CMP_ERR);
 683         }
 684
 685         softc = kmalloc(sizeof(*softc), M_DEVBUF, M_INTWAIT | M_ZERO);
 686         sysctl_ctx_init(&softc->sysctl_ctx);
 687         LIST_INIT(&softc->pending_ccbs);
 688         STAILQ_INIT(&softc->mode_queue);
 689         softc->state = CD_STATE_PROBE;
 690         bioq_init(&softc->bio_queue);
 691         if (SID_IS_REMOVABLE(&cgd->inq_data))
 692                 softc->flags |= CD_FLAG_DISC_REMOVABLE;
 693         if ((cgd->inq_data.flags & SID_CmdQue) != 0)
 694                 softc->flags |= CD_FLAG_TAGGED_QUEUING;
 695
 696         periph->softc = softc;
 697         softc->periph = periph;
 698
 699         cam_extend_set(cdperiphs, periph->unit_number, periph);
 700
 701         /*
 702          * See if this device has any quirks.
 703          */
 704         match = cam_quirkmatch((caddr_t)&cgd->inq_data,
 705                                (caddr_t)cd_quirk_table,
 706                                NELEM(cd_quirk_table),
 707                                sizeof(*cd_quirk_table), scsi_inquiry_match);
 708
 709         if (match != NULL)
 710                 softc->quirks = ((struct cd_quirk_entry *)match)->quirks;
 711         else
 712                 softc->quirks = CD_Q_NONE;
 713
 714         /* Check if the SIM does not want 6 byte commands */
 715         xpt_setup_ccb(&cpi.ccb_h, periph->path, /*priority*/1);
 716         cpi.ccb_h.func_code = XPT_PATH_INQ;
 717         xpt_action((union ccb *)&cpi);
 718         if (cpi.ccb_h.status == CAM_REQ_CMP && (cpi.hba_misc & PIM_NO_6_BYTE))
 719                 softc->quirks |= CD_Q_10_BYTE_ONLY;
 720
 721         TASK_INIT(&softc->sysctl_task, 0, cdsysctlinit, periph);
 722
 723         /* The default is 6 byte commands, unless quirked otherwise */
 724         if (softc->quirks & CD_Q_10_BYTE_ONLY)
 725                 softc->minimum_command_size = 10;
 726         else
 727                 softc->minimum_command_size = 6;
 728
 729         /*
 730          * Load the user's default, if any.
 731          */
 732         ksnprintf(tmpstr, sizeof(tmpstr), "kern.cam.cd.%d.minimum_cmd_size",
 733                 periph->unit_number);
 734         TUNABLE_INT_FETCH(tmpstr, &softc->minimum_command_size);
 735
 736         /* 6 and 10 are the only permissible values here. */
 737         if (softc->minimum_command_size < 6)
 738                 softc->minimum_command_size = 6;
 739         else if (softc->minimum_command_size > 6)
 740                 softc->minimum_command_size = 10;
 741
 742         /*
 743          * We need to register the statistics structure for this device,
 744          * but we don't have the blocksize yet for it.  So, we register
 745          * the structure and indicate that we don't have the blocksize
 746          * yet.  Unlike other SCSI peripheral drivers, we explicitly set
 747          * the device type here to be CDROM, rather than just ORing in
 748          * the device type.  This is because this driver can attach to either
 749          * CDROM or WORM devices, and we want this peripheral driver to
 750          * show up in the devstat list as a CD peripheral driver, not a
 751          * WORM peripheral driver.  WORM drives will also have the WORM
 752          * driver attached to them.
 753          */
 754         cam_periph_unlock(periph);
 755         devstat_add_entry(&softc->device_stats, "cd",
 756                           periph->unit_number, 0,
 757                           DEVSTAT_BS_UNAVAILABLE,
 758                           DEVSTAT_TYPE_CDROM | DEVSTAT_TYPE_IF_SCSI,
 759                           DEVSTAT_PRIORITY_CD);
 760         disk_create(periph->unit_number, &softc->disk, &cd_ops);
 761         disk_setdisktype(&softc->disk, "optical");
 762         softc->disk.d_rawdev->si_iosize_max = MAXPHYS;
 763         softc->disk.d_info.d_dsflags = DSO_ONESLICE | DSO_COMPATLABEL |
 764                                         DSO_COMPATPARTA;
 765         cam_periph_lock(periph);
 766
 767         /*
 768          * Add an async callback so that we get
 769          * notified if this device goes away.
 770          */
 771         xpt_register_async(AC_SENT_BDR | AC_BUS_RESET | AC_LOST_DEVICE,
 772                            cdasync, periph, periph->path);
 773
 774         /*
 775          * If the target lun is greater than 0, we most likely have a CD
 776          * changer device.  Check the quirk entries as well, though, just
 777          * in case someone has a CD tower with one lun per drive or
 778          * something like that.  Also, if we know up front that a
 779          * particular device is a changer, we can mark it as such starting
 780          * with lun 0, instead of lun 1.  It shouldn't be necessary to have
 781          * a quirk entry to define something as a changer, however.
 782          */
 783         if (((cgd->ccb_h.target_lun > 0)
 784           && ((softc->quirks & CD_Q_NO_CHANGER) == 0))
 785          || ((softc->quirks & CD_Q_CHANGER) != 0)) {
 786                 struct cdchanger *nchanger;
 787                 struct cam_periph *nperiph;
 788                 struct cam_path *path;
 789                 cam_status status;
 790                 int found;
 791
 792                 /* Set the changer flag in the current device's softc */
 793                 softc->flags |= CD_FLAG_CHANGER;
 794
 795                 /*
 796                  * Now, look around for an existing changer device with the
 797                  * same path and target ID as the current device.
 798                  */
 799                 lockmgr(&changerq_lock, LK_EXCLUSIVE);
 800                 for (found = 0,
 801                      nchanger = (struct cdchanger *)STAILQ_FIRST(&changerq);
 802                      nchanger != NULL;
 803                      nchanger = STAILQ_NEXT(nchanger, changer_links)){
 804                         if ((nchanger->path_id == cgd->ccb_h.path_id)
 805                          && (nchanger->target_id == cgd->ccb_h.target_id)) {
 806                                 found = 1;
 807                                 break;
 808                         }
 809                 }
 810                 lockmgr(&changerq_lock, LK_RELEASE);
 811
 812                 /*
 813                  * If we found a matching entry, just add this device to
 814                  * the list of devices on this changer.
 815                  */
 816                 if (found == 1) {
 817                         struct chdevlist *chlunhead;
 818
 819                         chlunhead = &nchanger->chluns;
 820
 821                         /*
 822                          * XXX KDM look at consolidating this code with the
 823                          * code below in a separate function.
 824                          */
 825
 826                         /*
 827                          * Create a path with lun id 0, and see if we can
 828                          * find a matching device
 829                          */
 830                         status = xpt_create_path(&path, /*periph*/ periph,
 831                                                  cgd->ccb_h.path_id,
 832                                                  cgd->ccb_h.target_id, 0);
 833
 834                         if ((status == CAM_REQ_CMP)
 835                          && ((nperiph = cam_periph_find(path, "cd")) != NULL)){
 836                                 struct cd_softc *nsoftc;
 837
 838                                 nsoftc = (struct cd_softc *)nperiph->softc;
 839
 840                                 if ((nsoftc->flags & CD_FLAG_CHANGER) == 0){
 841                                         nsoftc->flags |= CD_FLAG_CHANGER;
 842                                         nchanger->num_devices++;
 843                                         if (camq_resize(&nchanger->devq,
 844                                            nchanger->num_devices)!=CAM_REQ_CMP){
 845                                                 kprintf("cdregister: "
 846                                                        "camq_resize "
 847                                                        "failed, changer "
 848                                                        "support may "
 849                                                        "be messed up\n");
 850                                         }
 851                                         nsoftc->changer = nchanger;
 852                                         nsoftc->pinfo.index =CAM_UNQUEUED_INDEX;
 853
 854                                         STAILQ_INSERT_TAIL(&nchanger->chluns,
 855                                                           nsoftc,changer_links);
 856                                 }
 857                                 xpt_free_path(path);
 858                         } else if (status == CAM_REQ_CMP)
 859                                 xpt_free_path(path);
 860                         else {
 861                                 kprintf("cdregister: unable to allocate path\n"
 862                                        "cdregister: changer support may be "
 863                                        "broken\n");
 864                         }
 865
 866                         nchanger->num_devices++;
 867
 868                         softc->changer = nchanger;
 869                         softc->pinfo.index = CAM_UNQUEUED_INDEX;
 870
 871                         if (camq_resize(&nchanger->devq,
 872                             nchanger->num_devices) != CAM_REQ_CMP) {
 873                                 kprintf("cdregister: camq_resize "
 874                                        "failed, changer support may "
 875                                        "be messed up\n");
 876                         }
 877
 878                         STAILQ_INSERT_TAIL(chlunhead, softc, changer_links);
 879                 }
 880                 /*
 881                  * In this case, we don't already have an entry for this
 882                  * particular changer, so we need to create one, add it to
 883                  * the queue, and queue this device on the list for this
 884                  * changer.  Before we queue this device, however, we need
 885                  * to search for lun id 0 on this target, and add it to the
 886                  * queue first, if it exists.  (and if it hasn't already
 887                  * been marked as part of the changer.)
 888                  */
 889                 else {
 890                         nchanger = kmalloc(sizeof(struct cdchanger),
 891                                         M_DEVBUF, M_INTWAIT | M_ZERO);
 892                         callout_init(&nchanger->short_handle);
 893                         callout_init(&nchanger->long_handle);
 894                         if (camq_init(&nchanger->devq, 1) != 0) {
 895                                 softc->flags &= ~CD_FLAG_CHANGER;
 896                                 kprintf("cdregister: changer support "
 897                                        "disabled\n");
 898                                 goto cdregisterexit;
 899                         }
 900
 901                         nchanger->path_id = cgd->ccb_h.path_id;
 902                         nchanger->target_id = cgd->ccb_h.target_id;
 903
 904                         /* this is superfluous, but it makes things clearer */
 905                         nchanger->num_devices = 0;
 906
 907                         STAILQ_INIT(&nchanger->chluns);
 908
 909                         callout_init(&nchanger->long_handle);
 910                         callout_init(&nchanger->short_handle);
 911
 912                         lockmgr(&changerq_lock, LK_EXCLUSIVE);
 913                         num_changers++;
 914                         STAILQ_INSERT_TAIL(&changerq, nchanger,
 915                                            changer_links);
 916                         lockmgr(&changerq_lock, LK_RELEASE);
 917
 918                         /*
 919                          * Create a path with lun id 0, and see if we can
 920                          * find a matching device
 921                          */
 922                         status = xpt_create_path(&path, /*periph*/ periph,
 923                                                  cgd->ccb_h.path_id,
 924                                                  cgd->ccb_h.target_id, 0);
 925
 926                         /*
 927                          * If we were able to allocate the path, and if we
 928                          * find a matching device and it isn't already
 929                          * marked as part of a changer, then we add it to
 930                          * the current changer.
 931                          */
 932                         if ((status == CAM_REQ_CMP)
 933                          && ((nperiph = cam_periph_find(path, "cd")) != NULL)
 934                          && ((((struct cd_softc *)periph->softc)->flags &
 935                                CD_FLAG_CHANGER) == 0)) {
 936                                 struct cd_softc *nsoftc;
 937
 938                                 nsoftc = (struct cd_softc *)nperiph->softc;
 939
 940                                 nsoftc->flags |= CD_FLAG_CHANGER;
 941                                 nchanger->num_devices++;
 942                                 if (camq_resize(&nchanger->devq,
 943                                     nchanger->num_devices) != CAM_REQ_CMP) {
 944                                         kprintf("cdregister: camq_resize "
 945                                                "failed, changer support may "
 946                                                "be messed up\n");
 947                                 }
 948                                 nsoftc->changer = nchanger;
 949                                 nsoftc->pinfo.index = CAM_UNQUEUED_INDEX;
 950
 951                                 STAILQ_INSERT_TAIL(&nchanger->chluns,
 952                                                    nsoftc, changer_links);
 953                                 xpt_free_path(path);
 954                         } else if (status == CAM_REQ_CMP)
 955                                 xpt_free_path(path);
 956                         else {
 957                                 kprintf("cdregister: unable to allocate path\n"
 958                                        "cdregister: changer support may be "
 959                                        "broken\n");
 960                         }
 961
 962                         softc->changer = nchanger;
 963                         softc->pinfo.index = CAM_UNQUEUED_INDEX;
 964                         nchanger->num_devices++;
 965                         if (camq_resize(&nchanger->devq,
 966                             nchanger->num_devices) != CAM_REQ_CMP) {
 967                                 kprintf("cdregister: camq_resize "
 968                                        "failed, changer support may "
 969                                        "be messed up\n");
 970                         }
 971                         STAILQ_INSERT_TAIL(&nchanger->chluns, softc,
 972                                            changer_links);
 973                 }
 974         }
 975
 976 cdregisterexit:
 977
 978         /*
 979          * Refcount and block open attempts until we are setup
 980          * Can't block
 981          */
 982         cam_periph_hold(periph, 0);
 983
 984         if ((softc->flags & CD_FLAG_CHANGER) == 0)
 985                 xpt_schedule(periph, /*priority*/5);
 986         else
 987                 cdschedule(periph, /*priority*/ 5);
 988
 989         return(CAM_REQ_CMP);
 990 }
 991
 992 static int
 993 cdopen(struct dev_open_args *ap)
 994 {
 995         cdev_t dev = ap->a_head.a_dev;
 996         struct cam_periph *periph;
 997         struct cd_softc *softc;
 998         int unit, error;
 999
1000         unit = dkunit(dev);
1001         periph = cam_extend_get(cdperiphs, unit);
1002
1003         if (periph == NULL)
1004                 return (ENXIO);
1005
1006         softc = (struct cd_softc *)periph->softc;
1007
1008         if (cam_periph_acquire(periph) != CAM_REQ_CMP)
1009                 return(ENXIO);
1010
1011         cam_periph_lock(periph);
1012
1013         if (softc->flags & CD_FLAG_INVALID) {
1014                 cam_periph_unlock(periph);
1015                 cam_periph_release(periph);
1016                 return(ENXIO);
1017         }
1018
1019         if ((error = cam_periph_hold(periph, PCATCH)) != 0) {
1020                 cam_periph_unlock(periph);
1021                 cam_periph_release(periph);
1022                 return (error);
1023         }
1024
1025         /* Closes aren't symmetrical with opens, so fix up the refcounting. */
1026         if (softc->flags & CD_FLAG_OPEN)
1027                 cam_periph_release(periph);
1028         else
1029                 softc->flags |= CD_FLAG_OPEN;
1030
1031         /*
1032          * Check for media, and set the appropriate flags.  We don't bail
1033          * if we don't have media, but then we don't allow anything but the
1034          * CDIOCEJECT/CDIOCCLOSE ioctls if there is no media.
1035          *
1036          * XXX KDM for now, we do fail the open if we don't have media.  We
1037          * can change this once we've figured out how to make the slice
1038          * code work well with media changing underneath it.
1039          */
1040         error = cdcheckmedia(periph);
1041
1042         cdprevent(periph, PR_PREVENT);
1043         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("leaving cdopen\n"));
1044         cam_periph_unhold(periph, 1);
1045         /* stays acquired */
1046
1047         return (0);
1048 }
1049
1050 static int
1051 cdclose(struct dev_close_args *ap)
1052 {
1053         cdev_t dev = ap->a_head.a_dev;
1054         struct  cam_periph *periph;
1055         struct  cd_softc *softc;
1056         struct  disk_info *info;
1057         int     unit;
1058
1059         unit = dkunit(dev);
1060         periph = cam_extend_get(cdperiphs, unit);
1061         if (periph == NULL)
1062                 return (ENXIO);
1063
1064         softc = (struct cd_softc *)periph->softc;
1065
1066         cam_periph_lock(periph);
1067         cam_periph_hold(periph, 0);
1068
1069         if ((softc->flags & CD_FLAG_DISC_REMOVABLE) != 0)
1070                 cdprevent(periph, PR_ALLOW);
1071
1072         /*
1073          * Unconditionally set the dsopen() flags back to their default
1074          * state.
1075          */
1076         info = &softc->disk.d_info;
1077         info->d_dsflags &= ~DSO_NOLABELS;
1078         info->d_dsflags |= DSO_COMPATLABEL;
1079
1080         /*
1081          * Since we're closing this CD, mark the blocksize as unavailable.
1082          * It will be marked as available when the CD is opened again.
1083          */
1084         softc->device_stats.flags |= DEVSTAT_BS_UNAVAILABLE;
1085
1086         /*
1087          * We'll check the media and toc again at the next open().
1088          */
1089         softc->flags &= ~(CD_FLAG_VALID_MEDIA|CD_FLAG_VALID_TOC|CD_FLAG_OPEN);
1090
1091         cam_periph_unhold(periph, 1);
1092         cam_periph_release(periph);
1093
1094         return (0);
1095 }
1096
1097 static void
1098 cdshorttimeout(void *arg)
1099 {
1100         struct cdchanger *changer;
1101
1102         changer = (struct cdchanger *)arg;
1103
1104         /* Always clear the short timeout flag, since that's what we're in */
1105         changer->flags &= ~CHANGER_SHORT_TMOUT_SCHED;
1106
1107         /*
1108          * Check to see if there is any more pending or outstanding I/O for
1109          * this device.  If not, move it out of the active slot.
1110          */
1111         if ((bioq_first(&changer->cur_device->bio_queue) == NULL)
1112          && (changer->cur_device->outstanding_cmds == 0)) {
1113                 changer->flags |= CHANGER_MANUAL_CALL;
1114                 cdrunchangerqueue(changer);
1115         }
1116 }
1117
1118 /*
1119  * This is a wrapper for xpt_schedule.  It only applies to changers.
1120  */
1121 static void
1122 cdschedule(struct cam_periph *periph, int priority)
1123 {
1124         struct cd_softc *softc;
1125
1126         softc = (struct cd_softc *)periph->softc;
1127
1128         /*
1129          * If this device isn't currently queued, and if it isn't
1130          * the active device, then we queue this device and run the
1131          * changer queue if there is no timeout scheduled to do it.
1132          * If this device is the active device, just schedule it
1133          * to run again.  If this device is queued, there should be
1134          * a timeout in place already that will make sure it runs.
1135          */
1136         if ((softc->pinfo.index == CAM_UNQUEUED_INDEX)
1137          && ((softc->flags & CD_FLAG_ACTIVE) == 0)) {
1138                 /*
1139                  * We don't do anything with the priority here.
1140                  * This is strictly a fifo queue.
1141                  */
1142                 softc->pinfo.priority = 1;
1143                 softc->pinfo.generation = ++softc->changer->devq.generation;
1144                 camq_insert(&softc->changer->devq, (cam_pinfo *)softc);
1145
1146                 /*
1147                  * Since we just put a device in the changer queue,
1148                  * check and see if there is a timeout scheduled for
1149                  * this changer.  If so, let the timeout handle
1150                  * switching this device into the active slot.  If
1151                  * not, manually call the timeout routine to
1152                  * bootstrap things.
1153                  */
1154                 if (((softc->changer->flags & CHANGER_TIMEOUT_SCHED)==0)
1155                  && ((softc->changer->flags & CHANGER_NEED_TIMEOUT)==0)
1156                  && ((softc->changer->flags & CHANGER_SHORT_TMOUT_SCHED)==0)){
1157                         softc->changer->flags |= CHANGER_MANUAL_CALL;
1158                         cdrunchangerqueue(softc->changer);
1159                 }
1160         } else if ((softc->flags & CD_FLAG_ACTIVE)
1161                 && ((softc->flags & CD_FLAG_SCHED_ON_COMP) == 0)) {
1162                 xpt_schedule(periph, priority);
1163         }
1164 }
1165
1166 static void
1167 cdrunchangerqueue(void *arg)
1168 {
1169         struct cd_softc *softc;
1170         struct cdchanger *changer;
1171         int called_from_timeout;
1172
1173         changer = (struct cdchanger *)arg;
1174
1175         /*
1176          * If we have NOT been called from cdstrategy() or cddone(), and
1177          * instead from a timeout routine, go ahead and clear the
1178          * timeout flag.
1179          */
1180         if ((changer->flags & CHANGER_MANUAL_CALL) == 0) {
1181                 changer->flags &= ~CHANGER_TIMEOUT_SCHED;
1182                 called_from_timeout = 1;
1183         } else
1184                 called_from_timeout = 0;
1185
1186         /* Always clear the manual call flag */
1187         changer->flags &= ~CHANGER_MANUAL_CALL;
1188
1189         /* nothing to do if the queue is empty */
1190         if (changer->devq.entries <= 0) {
1191                 return;
1192         }
1193
1194         /*
1195          * If the changer queue is frozen, that means we have an active
1196          * device.
1197          */
1198         if (changer->devq.qfrozen_cnt > 0) {
1199
1200                 /*
1201                  * We always need to reset the frozen count and clear the
1202                  * active flag.
1203                  */
1204                 changer->devq.qfrozen_cnt--;
1205                 changer->cur_device->flags &= ~CD_FLAG_ACTIVE;
1206                 changer->cur_device->flags &= ~CD_FLAG_SCHED_ON_COMP;
1207
1208                 if (changer->cur_device->outstanding_cmds > 0) {
1209                         changer->cur_device->flags |= CD_FLAG_SCHED_ON_COMP;
1210                         changer->cur_device->bufs_left =
1211                                 changer->cur_device->outstanding_cmds;
1212                         if (called_from_timeout) {
1213                                 callout_reset(&changer->long_handle,
1214                                         changer_max_busy_seconds * hz,
1215                                         cdrunchangerqueue, changer);
1216                                 changer->flags |= CHANGER_TIMEOUT_SCHED;
1217                         }
1218                         return;
1219                 }
1220
1221                 /*
1222                  * Check to see whether the current device has any I/O left
1223                  * to do.  If so, requeue it at the end of the queue.  If
1224                  * not, there is no need to requeue it.
1225                  */
1226                 if (bioq_first(&changer->cur_device->bio_queue) != NULL) {
1227
1228                         changer->cur_device->pinfo.generation =
1229                                 ++changer->devq.generation;
1230                         camq_insert(&changer->devq,
1231                                 (cam_pinfo *)changer->cur_device);
1232                 }
1233         }
1234
1235         softc = (struct cd_softc *)camq_remove(&changer->devq, CAMQ_HEAD);
1236
1237         changer->cur_device = softc;
1238
1239         changer->devq.qfrozen_cnt++;
1240         softc->flags |= CD_FLAG_ACTIVE;
1241
1242         /* Just in case this device is waiting */
1243         wakeup(&softc->changer);
1244         xpt_schedule(softc->periph, /*priority*/ 1);
1245
1246         /*
1247          * Get rid of any pending timeouts, and set a flag to schedule new
1248          * ones so this device gets its full time quantum.
1249          */
1250         if (changer->flags & CHANGER_TIMEOUT_SCHED) {
1251                 callout_stop(&changer->long_handle);
1252                 changer->flags &= ~CHANGER_TIMEOUT_SCHED;
1253         }
1254
1255         if (changer->flags & CHANGER_SHORT_TMOUT_SCHED) {
1256                 callout_stop(&changer->short_handle);
1257                 changer->flags &= ~CHANGER_SHORT_TMOUT_SCHED;
1258         }
1259
1260         /*
1261          * We need to schedule timeouts, but we only do this after the
1262          * first transaction has completed.  This eliminates the changer
1263          * switch time.
1264          */
1265         changer->flags |= CHANGER_NEED_TIMEOUT;
1266 }
1267
1268 static void
1269 cdchangerschedule(struct cd_softc *softc)
1270 {
1271         struct cdchanger *changer;
1272
1273         changer = softc->changer;
1274
1275         /*
1276          * If this is a changer, and this is the current device,
1277          * and this device has at least the minimum time quantum to
1278          * run, see if we can switch it out.
1279          */
1280         if ((softc->flags & CD_FLAG_ACTIVE)
1281          && ((changer->flags & CHANGER_SHORT_TMOUT_SCHED) == 0)
1282          && ((changer->flags & CHANGER_NEED_TIMEOUT) == 0)) {
1283                 /*
1284                  * We try three things here.  The first is that we
1285                  * check to see whether the schedule on completion
1286                  * flag is set.  If it is, we decrement the number
1287                  * of buffers left, and if it's zero, we reschedule.
1288                  * Next, we check to see whether the pending buffer
1289                  * queue is empty and whether there are no
1290                  * outstanding transactions.  If so, we reschedule.
1291                  * Next, we see if the pending buffer queue is empty.
1292                  * If it is, we set the number of buffers left to
1293                  * the current active buffer count and set the
1294                  * schedule on complete flag.
1295                  */
1296                 if (softc->flags & CD_FLAG_SCHED_ON_COMP) {
1297                         if (--softc->bufs_left == 0) {
1298                                 softc->changer->flags |=
1299                                         CHANGER_MANUAL_CALL;
1300                                 softc->flags &= ~CD_FLAG_SCHED_ON_COMP;
1301                                 cdrunchangerqueue(softc->changer);
1302                         }
1303                 } else if ((bioq_first(&softc->bio_queue) == NULL)
1304                         && (softc->outstanding_cmds == 0)) {
1305                         softc->changer->flags |= CHANGER_MANUAL_CALL;
1306                         cdrunchangerqueue(softc->changer);
1307                 }
1308         } else if ((softc->changer->flags & CHANGER_NEED_TIMEOUT)
1309                 && (softc->flags & CD_FLAG_ACTIVE)) {
1310
1311                 /*
1312                  * Now that the first transaction to this
1313                  * particular device has completed, we can go ahead
1314                  * and schedule our timeouts.
1315                  */
1316                 if ((changer->flags & CHANGER_TIMEOUT_SCHED) == 0) {
1317                         callout_reset(&changer->long_handle,
1318                                     changer_max_busy_seconds * hz,
1319                                     cdrunchangerqueue, changer);
1320                         changer->flags |= CHANGER_TIMEOUT_SCHED;
1321                 } else
1322                         kprintf("cdchangerschedule: already have a long"
1323                                " timeout!\n");
1324
1325                 if ((changer->flags & CHANGER_SHORT_TMOUT_SCHED) == 0) {
1326                         callout_reset(&changer->short_handle,
1327                                         changer_min_busy_seconds * hz,
1328                                         cdshorttimeout, changer);
1329                         changer->flags |= CHANGER_SHORT_TMOUT_SCHED;
1330                 } else
1331                         kprintf("cdchangerschedule: already have a short "
1332                                "timeout!\n");
1333
1334                 /*
1335                  * We just scheduled timeouts, no need to schedule
1336                  * more.
1337                  */
1338                 changer->flags &= ~CHANGER_NEED_TIMEOUT;
1339
1340         }
1341 }
1342
1343 static int
1344 cdrunccb(union ccb *ccb, int (*error_routine)(union ccb *ccb,
1345                                               u_int32_t cam_flags,
1346                                               u_int32_t sense_flags),
1347          u_int32_t cam_flags, u_int32_t sense_flags)
1348 {
1349         struct cd_softc *softc;
1350         struct cam_periph *periph;
1351         int error;
1352
1353         periph = xpt_path_periph(ccb->ccb_h.path);
1354         softc = (struct cd_softc *)periph->softc;
1355
1356         error = cam_periph_runccb(ccb, error_routine, cam_flags, sense_flags,
1357                                   &softc->device_stats);
1358
1359         if (softc->flags & CD_FLAG_CHANGER)
1360                 cdchangerschedule(softc);
1361
1362         return(error);
1363 }
1364
1365 static union ccb *
1366 cdgetccb(struct cam_periph *periph, u_int32_t priority)
1367 {
1368         struct cd_softc *softc;
1369
1370         softc = (struct cd_softc *)periph->softc;
1371
1372         if (softc->flags & CD_FLAG_CHANGER) {
1373                 /*
1374                  * This should work the first time this device is woken up,
1375                  * but just in case it doesn't, we use a while loop.
1376                  */
1377                 while ((softc->flags & CD_FLAG_ACTIVE) == 0) {
1378                         /*
1379                          * If this changer isn't already queued, queue it up.
1380                          */
1381                         if (softc->pinfo.index == CAM_UNQUEUED_INDEX) {
1382                                 softc->pinfo.priority = 1;
1383                                 softc->pinfo.generation =
1384                                         ++softc->changer->devq.generation;
1385                                 camq_insert(&softc->changer->devq,
1386                                             (cam_pinfo *)softc);
1387                         }
1388                         if (((softc->changer->flags & CHANGER_TIMEOUT_SCHED)==0)
1389                          && ((softc->changer->flags & CHANGER_NEED_TIMEOUT)==0)
1390                          && ((softc->changer->flags
1391                               & CHANGER_SHORT_TMOUT_SCHED)==0)) {
1392                                 softc->changer->flags |= CHANGER_MANUAL_CALL;
1393                                 cdrunchangerqueue(softc->changer);
1394                         } else
1395                                 sim_lock_sleep(&softc->changer, 0, "cgticb", 0,
1396                                                periph->sim->lock);
1397                 }
1398         }
1399         return(cam_periph_getccb(periph, priority));
1400 }
1401
1402 /*
1403  * Actually translate the requested transfer into one the physical driver
1404  * can understand.  The transfer is described by a buf and will include
1405  * only one physical transfer.
1406  */
1407 static int
1408 cdstrategy(struct dev_strategy_args *ap)
1409 {
1410         cdev_t dev = ap->a_head.a_dev;
1411         struct bio *bio = ap->a_bio;
1412         struct buf *bp = bio->bio_buf;
1413         struct cam_periph *periph;
1414         struct cd_softc *softc;
1415         u_int  unit;
1416
1417         unit = dkunit(dev);
1418         periph = cam_extend_get(cdperiphs, unit);
1419         if (periph == NULL) {
1420                 bp->b_error = ENXIO;
1421                 goto bad;
1422         }
1423
1424         cam_periph_lock(periph);
1425         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("entering cdstrategy\n"));
1426
1427         softc = (struct cd_softc *)periph->softc;
1428
1429         /*
1430          * If the device has been made invalid, error out
1431          */
1432         if ((softc->flags & CD_FLAG_INVALID)) {
1433                 cam_periph_unlock(periph);
1434                 bp->b_error = ENXIO;
1435                 goto bad;
1436         }
1437
1438         /*
1439          * If we don't have valid media, look for it before trying to
1440          * schedule the I/O.
1441          */
1442         if ((softc->flags & CD_FLAG_VALID_MEDIA) == 0) {
1443                 int error;
1444
1445                 error = cdcheckmedia(periph);
1446                 if (error != 0) {
1447                         cam_periph_unlock(periph);
1448                         bp->b_error = error;
1449                         goto bad;
1450                 }
1451         }
1452
1453         /*
1454          * Place it in the queue of disk activities for this disk
1455          */
1456         bioqdisksort(&softc->bio_queue, bio);
1457
1458         /*
1459          * Schedule ourselves for performing the work.  We do things
1460          * differently for changers.
1461          */
1462         if ((softc->flags & CD_FLAG_CHANGER) == 0)
1463                 xpt_schedule(periph, /* XXX priority */1);
1464         else
1465                 cdschedule(periph, /* priority */ 1);
1466
1467         cam_periph_unlock(periph);
1468         return(0);
1469 bad:
1470         bp->b_flags |= B_ERROR;
1471         /*
1472          * Correctly set the buf to indicate a completed xfer
1473          */
1474         bp->b_resid = bp->b_bcount;
1475         biodone(bio);
1476         return(0);
1477 }
1478
1479 static void
1480 cdstart(struct cam_periph *periph, union ccb *start_ccb)
1481 {
1482         struct cd_softc *softc;
1483         struct bio *bio;
1484         struct buf *bp;
1485         struct ccb_scsiio *csio;
1486         struct scsi_read_capacity_data *rcap;
1487
1488         softc = (struct cd_softc *)periph->softc;
1489
1490         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("entering cdstart\n"));
1491
1492         switch (softc->state) {
1493         case CD_STATE_NORMAL:
1494         {
1495                 bio = bioq_first(&softc->bio_queue);
1496                 if (periph->immediate_priority <= periph->pinfo.priority) {
1497                         start_ccb->ccb_h.ccb_state = CD_CCB_WAITING;
1498
1499                         SLIST_INSERT_HEAD(&periph->ccb_list, &start_ccb->ccb_h,
1500                                           periph_links.sle);
1501                         periph->immediate_priority = CAM_PRIORITY_NONE;
1502                         wakeup(&periph->ccb_list);
1503                 } else if (bio == NULL) {
1504                         xpt_release_ccb(start_ccb);
1505                 } else {
1506                         bp = bio->bio_buf;
1507                         bioq_remove(&softc->bio_queue, bio);
1508
1509                         devstat_start_transaction(&softc->device_stats);
1510
1511                         KKASSERT(bio->bio_offset % softc->params.blksize == 0);
1512
1513                         scsi_read_write(&start_ccb->csio,
1514                                         /*retries*/4,
1515                                         /* cbfcnp */ cddone,
1516                                         (bp->b_flags & B_ORDERED) != 0 ?
1517                                             MSG_ORDERED_Q_TAG :
1518                                             MSG_SIMPLE_Q_TAG,
1519                                         /* read */(bp->b_cmd == BUF_CMD_READ),
1520                                         /* byte2 */ 0,
1521                                         /* minimum_cmd_size */ 10,
1522                                         /* lba */
1523                                         bio->bio_offset / softc->params.blksize,
1524                                         bp->b_bcount / softc->params.blksize,
1525                                         /* data_ptr */ bp->b_data,
1526                                         /* dxfer_len */ bp->b_bcount,
1527                                         /* sense_len */ SSD_FULL_SIZE,
1528                                         /* timeout */ 30000);
1529                         start_ccb->ccb_h.ccb_state = CD_CCB_BUFFER_IO;
1530
1531
1532                         LIST_INSERT_HEAD(&softc->pending_ccbs,
1533                                          &start_ccb->ccb_h, periph_links.le);
1534
1535                         softc->outstanding_cmds++;
1536                         /* We expect a unit attention from this device */
1537                         if ((softc->flags & CD_FLAG_RETRY_UA) != 0) {
1538                                 start_ccb->ccb_h.ccb_state |= CD_CCB_RETRY_UA;
1539                                 softc->flags &= ~CD_FLAG_RETRY_UA;
1540                         }
1541
1542                         start_ccb->ccb_h.ccb_bio = bio;
1543                         bio = bioq_first(&softc->bio_queue);
1544
1545                         xpt_action(start_ccb);
1546                 }
1547                 if (bio != NULL) {
1548                         /* Have more work to do, so ensure we stay scheduled */
1549                         xpt_schedule(periph, /* XXX priority */1);
1550                 }
1551                 break;
1552         }
1553         case CD_STATE_PROBE:
1554         {
1555
1556                 rcap = kmalloc(sizeof(*rcap), M_SCSICD, M_INTWAIT);
1557                 csio = &start_ccb->csio;
1558                 scsi_read_capacity(csio,
1559                                    /*retries*/1,
1560                                    cddone,
1561                                    MSG_SIMPLE_Q_TAG,
1562                                    rcap,
1563                                    SSD_FULL_SIZE,
1564                                    /*timeout*/20000);
1565                 start_ccb->ccb_h.ccb_bio = NULL;
1566                 start_ccb->ccb_h.ccb_state = CD_CCB_PROBE;
1567                 xpt_action(start_ccb);
1568                 break;
1569         }
1570         }
1571 }
1572
1573 static void
1574 cddone(struct cam_periph *periph, union ccb *done_ccb)
1575 {
1576         struct cd_softc *softc;
1577         struct ccb_scsiio *csio;
1578
1579         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("entering cddone\n"));
1580
1581         softc = (struct cd_softc *)periph->softc;
1582         csio = &done_ccb->csio;
1583
1584         switch (csio->ccb_h.ccb_state & CD_CCB_TYPE_MASK) {
1585         case CD_CCB_BUFFER_IO:
1586         {
1587                 struct buf      *bp;
1588                 struct bio      *bio;
1589                 int             error;
1590
1591                 bio = (struct bio *)done_ccb->ccb_h.ccb_bio;
1592                 bp = bio->bio_buf;
1593                 error = 0;
1594
1595                 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1596                         int sf;
1597
1598                         if ((done_ccb->ccb_h.ccb_state & CD_CCB_RETRY_UA) != 0)
1599                                 sf = SF_RETRY_UA;
1600                         else
1601                                 sf = 0;
1602
1603                         error = cderror(done_ccb, CAM_RETRY_SELTO, sf);
1604                         if (error == ERESTART) {
1605                                 /*
1606                                  * A retry was scheuled, so
1607                                  * just return.
1608                                  */
1609                                 return;
1610                         }
1611                 }
1612
1613                 if (error != 0) {
1614                         struct bio *q_bio;
1615                         struct buf *q_bp;
1616
1617                         xpt_print(periph->path,
1618                                   "cddone: got error %#x back\n", error);
1619                         while ((q_bio = bioq_takefirst(&softc->bio_queue)) != NULL) {
1620                                 q_bp = q_bio->bio_buf;
1621                                 q_bp->b_resid = q_bp->b_bcount;
1622                                 q_bp->b_error = EIO;
1623                                 q_bp->b_flags |= B_ERROR;
1624                                 biodone(q_bio);
1625                         }
1626                         bp->b_resid = bp->b_bcount;
1627                         bp->b_error = error;
1628                         bp->b_flags |= B_ERROR;
1629                         cam_release_devq(done_ccb->ccb_h.path,
1630                                          /*relsim_flags*/0,
1631                                          /*reduction*/0,
1632                                          /*timeout*/0,
1633                                          /*getcount_only*/0);
1634
1635                 } else {
1636                         bp->b_resid = csio->resid;
1637                         bp->b_error = 0;
1638                         if (bp->b_resid != 0) {
1639                                 /* Short transfer ??? */
1640                                 bp->b_flags |= B_ERROR;
1641                         }
1642                 }
1643
1644                 LIST_REMOVE(&done_ccb->ccb_h, periph_links.le);
1645                 softc->outstanding_cmds--;
1646
1647                 if (softc->flags & CD_FLAG_CHANGER)
1648                         cdchangerschedule(softc);
1649
1650                 devstat_end_transaction_buf(&softc->device_stats, bp);
1651                 biodone(bio);
1652                 break;
1653         }
1654         case CD_CCB_PROBE:
1655         {
1656                 /*
1657                  * Currently (9/30/97) the longest possible announce
1658                  * buffer is 108 bytes, for the first error case below.
1659                  * That is 39 bytes for the basic string, 16 bytes for the
1660                  * biggest sense key (hardware error), 52 bytes for the
1661                  * text of the largest sense qualifier valid for a CDROM,
1662                  * (0x72, 0x03 or 0x04, 0x03), and one byte for the
1663                  * null terminating character.  To allow for longer strings,
1664                  * the announce buffer is 120 bytes.
1665                  *
1666                  * We need to call disk_setdiskinfo() before the disk
1667                  * subsystem will allow any opens.  Because additional
1668                  * probe code is in cdopen() we do this now whether a CD
1669                  * is present or not.
1670                  */
1671                 struct  scsi_read_capacity_data *rdcap;
1672                 struct  disk_info info;
1673                 char    announce_buf[120];
1674                 struct  cd_params *cdp;
1675
1676                 cdp = &softc->params;
1677                 bzero(&info, sizeof(info));
1678                 info.d_type = DTYPE_SCSI;
1679                 info.d_dsflags &= ~DSO_COMPATLABEL;
1680                 info.d_dsflags |= DSO_NOLABELS | DSO_COMPATPARTA;
1681                 info.d_serialno = xpt_path_serialno(periph->path);
1682
1683                 rdcap = (struct scsi_read_capacity_data *)csio->data_ptr;
1684
1685                 cdp->disksize = scsi_4btoul (rdcap->addr) + 1;
1686                 cdp->blksize = scsi_4btoul (rdcap->length);
1687
1688                 if ((csio->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP) {
1689                         ksnprintf(announce_buf, sizeof(announce_buf),
1690                                   "cd present [%lu x %lu byte records]",
1691                                   cdp->disksize, (u_long)cdp->blksize);
1692                         info.d_media_blksize = cdp->blksize;
1693                         info.d_media_blocks = cdp->disksize;
1694                         disk_setdiskinfo(&softc->disk, &info);
1695                 } else {
1696                         int     error;
1697
1698                         /*
1699                          * Retry any UNIT ATTENTION type errors.  They
1700                          * are expected at boot.
1701                          */
1702                         error = cderror(done_ccb, CAM_RETRY_SELTO,
1703                                         SF_RETRY_UA | SF_NO_PRINT);
1704                         if (error == ERESTART) {
1705                                 /*
1706                                  * A retry was scheuled, so
1707                                  * just return.
1708                                  */
1709                                 return;
1710                         } else if (error != 0) {
1711                                 struct scsi_sense_data *sense;
1712                                 int asc, ascq;
1713                                 int sense_key, error_code;
1714                                 int have_sense;
1715                                 cam_status status;
1716                                 struct ccb_getdev cgd;
1717
1718                                 /* Don't wedge this device's queue */
1719                                 cam_release_devq(done_ccb->ccb_h.path,
1720                                                  /*relsim_flags*/0,
1721                                                  /*reduction*/0,
1722                                                  /*timeout*/0,
1723                                                  /*getcount_only*/0);
1724
1725                                 status = done_ccb->ccb_h.status;
1726
1727                                 xpt_setup_ccb(&cgd.ccb_h,
1728                                               done_ccb->ccb_h.path,
1729                                               /* priority */ 1);
1730                                 cgd.ccb_h.func_code = XPT_GDEV_TYPE;
1731                                 xpt_action((union ccb *)&cgd);
1732
1733                                 if (((csio->ccb_h.flags & CAM_SENSE_PHYS) != 0)
1734                                  || ((csio->ccb_h.flags & CAM_SENSE_PTR) != 0)
1735                                  || ((status & CAM_AUTOSNS_VALID) == 0))
1736                                         have_sense = FALSE;
1737                                 else
1738                                         have_sense = TRUE;
1739
1740                                 if (have_sense) {
1741                                         sense = &csio->sense_data;
1742                                         scsi_extract_sense(sense, &error_code,
1743                                                            &sense_key,
1744                                                            &asc, &ascq);
1745                                 }
1746                                 /*
1747                                  * Attach to anything that claims to be a
1748                                  * CDROM or WORM device, as long as it
1749                                  * doesn't return a "Logical unit not
1750                                  * supported" (0x25) error.
1751                                  */
1752                                 if ((have_sense) && (asc != 0x25)
1753                                  && (error_code == SSD_CURRENT_ERROR)) {
1754                                         const char *sense_key_desc;
1755                                         const char *asc_desc;
1756
1757                                         scsi_sense_desc(sense_key, asc, ascq,
1758                                                         &cgd.inq_data,
1759                                                         &sense_key_desc,
1760                                                         &asc_desc);
1761                                         ksnprintf(announce_buf,
1762                                             sizeof(announce_buf),
1763                                                 "Attempt to query device "
1764                                                 "size failed: %s, %s",
1765                                                 sense_key_desc,
1766                                                 asc_desc);
1767                                         info.d_media_blksize = 2048;
1768                                         disk_setdiskinfo(&softc->disk, &info);
1769                                 } else if (SID_TYPE(&cgd.inq_data) == T_CDROM) {
1770                                         /*
1771                                          * We only print out an error for
1772                                          * CDROM type devices.  For WORM
1773                                          * devices, we don't print out an
1774                                          * error since a few WORM devices
1775                                          * don't support CDROM commands.
1776                                          * If we have sense information, go
1777                                          * ahead and print it out.
1778                                          * Otherwise, just say that we
1779                                          * couldn't attach.
1780                                          */
1781
1782                                         /*
1783                                          * Just print out the error, not
1784                                          * the full probe message, when we
1785                                          * don't attach.
1786                                          */
1787                                         if (have_sense)
1788                                                 scsi_sense_print(
1789                                                         &done_ccb->csio);
1790                                         else {
1791                                                 xpt_print(periph->path,
1792                                                     "got CAM status %#x\n",
1793                                                     done_ccb->ccb_h.status);
1794                                         }
1795                                         xpt_print(periph->path, "fatal error, "
1796                                             "failed to attach to device\n");
1797                                         /*
1798                                          * Invalidate this peripheral.
1799                                          */
1800                                         cam_periph_invalidate(periph);
1801
1802                                         announce_buf[0] = '\0';
1803                                 } else {
1804
1805                                         /*
1806                                          * Invalidate this peripheral.
1807                                          */
1808                                         cam_periph_invalidate(periph);
1809                                         announce_buf[0] = '\0';
1810                                 }
1811                         }
1812                 }
1813                 kfree(rdcap, M_SCSICD);
1814                 if (announce_buf[0] != '\0') {
1815                         xpt_announce_periph(periph, announce_buf);
1816                         if (softc->flags & CD_FLAG_CHANGER)
1817                                 cdchangerschedule(softc);
1818                         /*
1819                          * Create our sysctl variables, now that we know
1820                          * we have successfully attached.
1821                          */
1822                         taskqueue_enqueue(taskqueue_thread[mycpuid],
1823                             &softc->sysctl_task);
1824                 }
1825                 softc->state = CD_STATE_NORMAL;
1826                 /*
1827                  * Since our peripheral may be invalidated by an error
1828                  * above or an external event, we must release our CCB
1829                  * before releasing the probe lock on the peripheral.
1830                  * The peripheral will only go away once the last lock
1831                  * is removed, and we need it around for the CCB release
1832                  * operation.
1833                  */
1834                 xpt_release_ccb(done_ccb);
1835                 cam_periph_unhold(periph, 0);
1836                 return;
1837         }
1838         case CD_CCB_WAITING:
1839         {
1840                 /* Caller will release the CCB */
1841                 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE,
1842                           ("trying to wakeup ccbwait\n"));
1843
1844                 wakeup(&done_ccb->ccb_h.cbfcnp);
1845                 return;
1846         }
1847         default:
1848                 break;
1849         }
1850         xpt_release_ccb(done_ccb);
1851 }
1852
1853 static union cd_pages *
1854 cdgetpage(struct cd_mode_params *mode_params)
1855 {
1856         union cd_pages *page;
1857
1858         if (mode_params->cdb_size == 10)
1859                 page = (union cd_pages *)find_mode_page_10(
1860                         (struct scsi_mode_header_10 *)mode_params->mode_buf);
1861         else
1862                 page = (union cd_pages *)find_mode_page_6(
1863                         (struct scsi_mode_header_6 *)mode_params->mode_buf);
1864
1865         return (page);
1866 }
1867
1868 static int
1869 cdgetpagesize(int page_num)
1870 {
1871         int i;
1872
1873         for (i = 0; i < NELEM(cd_page_size_table); i++) {
1874                 if (cd_page_size_table[i].page == page_num)
1875                         return (cd_page_size_table[i].page_size);
1876         }
1877         return (-1);
1878 }
1879
1880 static int
1881 cdioctl(struct dev_ioctl_args *ap)
1882 {
1883         cdev_t dev = ap->a_head.a_dev;
1884         caddr_t addr = ap->a_data;
1885         struct  cam_periph *periph;
1886         struct  cd_softc *softc;
1887         int     unit, error = 0;
1888
1889         unit = dkunit(dev);
1890
1891         periph = cam_extend_get(cdperiphs, unit);
1892         if (periph == NULL)
1893                 return(ENXIO);
1894
1895         cam_periph_lock(periph);
1896         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("entering cdioctl\n"));
1897
1898         softc = (struct cd_softc *)periph->softc;
1899
1900         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE,
1901                   ("trying to do ioctl %#lx\n", ap->a_cmd));
1902
1903         if ((error = cam_periph_hold(periph, PCATCH)) != 0) {
1904                 cam_periph_unlock(periph);
1905                 cam_periph_release(periph);
1906                 return (error);
1907         }
1908
1909         /*
1910          * If we don't have media loaded, check for it.  If still don't
1911          * have media loaded, we can only do a load or eject.
1912          *
1913          * We only care whether media is loaded if this is a cd-specific ioctl
1914          * (thus the IOCGROUP check below).  Note that this will break if
1915          * anyone adds any ioctls into the switch statement below that don't
1916          * have their ioctl group set to 'c'.
1917          */
1918         if (((softc->flags & CD_FLAG_VALID_MEDIA) == 0)
1919             && ((ap->a_cmd != CDIOCCLOSE)
1920             && (ap->a_cmd != CDIOCEJECT))
1921             && (IOCGROUP(ap->a_cmd) == 'c')) {
1922                 error = cdcheckmedia(periph);
1923                 if (error != 0) {
1924                         cam_periph_unhold(periph, 1);
1925                         return (error);
1926                 }
1927         }
1928         /*
1929          * Drop the lock here so later mallocs can use WAITOK.  The periph
1930          * is essentially locked still with the cam_periph_hold call above.
1931          */
1932         cam_periph_unlock(periph);
1933
1934         switch (ap->a_cmd) {
1935
1936         case CDIOCPLAYTRACKS:
1937                 {
1938                         struct ioc_play_track *args
1939                             = (struct ioc_play_track *)addr;
1940                         struct cd_mode_params params;
1941                         union cd_pages *page;
1942
1943                         params.alloc_len = sizeof(union cd_mode_data_6_10);
1944                         params.mode_buf = kmalloc(params.alloc_len, M_SCSICD,
1945                                                  M_WAITOK | M_ZERO);
1946
1947                         cam_periph_lock(periph);
1948                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
1949                                   ("trying to do CDIOCPLAYTRACKS\n"));
1950
1951                         error = cdgetmode(periph, &params, AUDIO_PAGE);
1952                         if (error) {
1953                                 kfree(params.mode_buf, M_SCSICD);
1954                                 cam_periph_unlock(periph);
1955                                 break;
1956                         }
1957                         page = cdgetpage(&params);
1958
1959                         page->audio.flags &= ~CD_PA_SOTC;
1960                         page->audio.flags |= CD_PA_IMMED;
1961                         error = cdsetmode(periph, &params);
1962                         kfree(params.mode_buf, M_SCSICD);
1963                         if (error) {
1964                                 cam_periph_unlock(periph);
1965                                 break;
1966                         }
1967
1968                         /*
1969                          * This was originally implemented with the PLAY
1970                          * AUDIO TRACK INDEX command, but that command was
1971                          * deprecated after SCSI-2.  Most (all?) SCSI CDROM
1972                          * drives support it but ATAPI and ATAPI-derivative
1973                          * drives don't seem to support it.  So we keep a
1974                          * cache of the table of contents and translate
1975                          * track numbers to MSF format.
1976                          */
1977                         if (softc->flags & CD_FLAG_VALID_TOC) {
1978                                 union msf_lba *sentry, *eentry;
1979                                 int st, et;
1980
1981                                 if (args->end_track <
1982                                     softc->toc.header.ending_track + 1)
1983                                         args->end_track++;
1984                                 if (args->end_track >
1985                                     softc->toc.header.ending_track + 1)
1986                                         args->end_track =
1987                                             softc->toc.header.ending_track + 1;
1988                                 st = args->start_track -
1989                                         softc->toc.header.starting_track;
1990                                 et = args->end_track -
1991                                         softc->toc.header.starting_track;
1992                                 if ((st < 0)
1993                                  || (et < 0)
1994                                  || (st > (softc->toc.header.ending_track -
1995                                      softc->toc.header.starting_track))) {
1996                                         error = EINVAL;
1997                                         break;
1998                                 }
1999                                 sentry = &softc->toc.entries[st].addr;
2000                                 eentry = &softc->toc.entries[et].addr;
2001                                 error = cdplaymsf(periph,
2002                                                   sentry->msf.minute,
2003                                                   sentry->msf.second,
2004                                                   sentry->msf.frame,
2005                                                   eentry->msf.minute,
2006                                                   eentry->msf.second,
2007                                                   eentry->msf.frame);
2008                         } else {
2009                                 /*
2010                                  * If we don't have a valid TOC, try the
2011                                  * play track index command.  It is part of
2012                                  * the SCSI-2 spec, but was removed in the
2013                                  * MMC specs.  ATAPI and ATAPI-derived
2014                                  * drives don't support it.
2015                                  */
2016                                 if (softc->quirks & CD_Q_BCD_TRACKS) {
2017                                         args->start_track =
2018                                                 bin2bcd(args->start_track);
2019                                         args->end_track =
2020                                                 bin2bcd(args->end_track);
2021                                 }
2022                                 error = cdplaytracks(periph,
2023                                                      args->start_track,
2024                                                      args->start_index,
2025                                                      args->end_track,
2026                                                      args->end_index);
2027                         }
2028                         cam_periph_unlock(periph);
2029                 }
2030                 break;
2031         case CDIOCPLAYMSF:
2032                 {
2033                         struct ioc_play_msf *args
2034                                 = (struct ioc_play_msf *) addr;
2035                         struct cd_mode_params params;
2036                         union cd_pages *page;
2037
2038                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2039                         params.mode_buf = kmalloc(params.alloc_len, M_SCSICD,
2040                                                  M_WAITOK | M_ZERO);
2041
2042                         cam_periph_lock(periph);
2043                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2044                                   ("trying to do CDIOCPLAYMSF\n"));
2045
2046                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2047                         if (error) {
2048                                 kfree(params.mode_buf, M_SCSICD);
2049                                 cam_periph_unlock(periph);
2050                                 break;
2051                         }
2052                         page = cdgetpage(&params);
2053
2054                         page->audio.flags &= ~CD_PA_SOTC;
2055                         page->audio.flags |= CD_PA_IMMED;
2056                         error = cdsetmode(periph, &params);
2057                         kfree(params.mode_buf, M_SCSICD);
2058                         if (error) {
2059                                 cam_periph_unlock(periph);
2060                                 break;
2061                         }
2062                         error = cdplaymsf(periph,
2063                                           args->start_m,
2064                                           args->start_s,
2065                                           args->start_f,
2066                                           args->end_m,
2067                                           args->end_s,
2068                                           args->end_f);
2069                         cam_periph_unlock(periph);
2070                 }
2071                 break;
2072         case CDIOCPLAYBLOCKS:
2073                 {
2074                         struct ioc_play_blocks *args
2075                                 = (struct ioc_play_blocks *) addr;
2076                         struct cd_mode_params params;
2077                         union cd_pages *page;
2078
2079                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2080                         params.mode_buf = kmalloc(params.alloc_len, M_SCSICD,
2081                                                  M_WAITOK | M_ZERO);
2082                         cam_periph_lock(periph);
2083                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2084                                   ("trying to do CDIOCPLAYBLOCKS\n"));
2085
2086
2087                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2088                         if (error) {
2089                                 kfree(params.mode_buf, M_SCSICD);
2090                                 cam_periph_unlock(periph);
2091                                 break;
2092                         }
2093                         page = cdgetpage(&params);
2094
2095                         page->audio.flags &= ~CD_PA_SOTC;
2096                         page->audio.flags |= CD_PA_IMMED;
2097                         error = cdsetmode(periph, &params);
2098                         kfree(params.mode_buf, M_SCSICD);
2099                         if (error) {
2100                                 cam_periph_unlock(periph);
2101                                 break;
2102                         }
2103                         error = cdplay(periph, args->blk, args->len);
2104                         cam_periph_unlock(periph);
2105                 }
2106                 break;
2107         case CDIOCREADSUBCHANNEL:
2108                 {
2109                         struct ioc_read_subchannel *args
2110                                 = (struct ioc_read_subchannel *) addr;
2111                         struct cd_sub_channel_info *data;
2112                         u_int32_t len = args->data_len;
2113
2114                         data = kmalloc(sizeof(struct cd_sub_channel_info),
2115                                       M_SCSICD, M_WAITOK);
2116
2117                         cam_periph_lock(periph);
2118                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2119                                   ("trying to do CDIOCREADSUBCHANNEL\n"));
2120
2121                         if ((len > sizeof(struct cd_sub_channel_info)) ||
2122                             (len < sizeof(struct cd_sub_channel_header))) {
2123                                 kprintf(
2124                                         "scsi_cd: cdioctl: "
2125                                         "cdioreadsubchannel: error, len=%d\n",
2126                                         len);
2127                                 error = EINVAL;
2128                                 kfree(data, M_SCSICD);
2129                                 cam_periph_unlock(periph);
2130                                 break;
2131                         }
2132
2133                         if (softc->quirks & CD_Q_BCD_TRACKS)
2134                                 args->track = bin2bcd(args->track);
2135
2136                         error = cdreadsubchannel(periph, args->address_format,
2137                                 args->data_format, args->track, data, len);
2138
2139                         if (error) {
2140                                 kfree(data, M_SCSICD);
2141                                 cam_periph_unlock(periph);
2142                                 break;
2143                         }
2144                         if (softc->quirks & CD_Q_BCD_TRACKS)
2145                                 data->what.track_info.track_number =
2146                                     bcd2bin(data->what.track_info.track_number);
2147                         len = min(len, ((data->header.data_len[0] << 8) +
2148                                 data->header.data_len[1] +
2149                                 sizeof(struct cd_sub_channel_header)));
2150                         cam_periph_unlock(periph);
2151                         if (copyout(data, args->data, len) != 0) {
2152                                 error = EFAULT;
2153                         }
2154                         kfree(data, M_SCSICD);
2155                 }
2156                 break;
2157
2158         case CDIOREADTOCHEADER:
2159                 {
2160                         struct ioc_toc_header *th;
2161
2162                         th = kmalloc(sizeof(struct ioc_toc_header), M_SCSICD,
2163                                     M_WAITOK);
2164
2165                         cam_periph_lock(periph);
2166                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2167                                   ("trying to do CDIOREADTOCHEADER\n"));
2168
2169                         error = cdreadtoc(periph, 0, 0, (u_int8_t *)th,
2170                                           sizeof (*th), /*sense_flags*/0);
2171                         if (error) {
2172                                 kfree(th, M_SCSICD);
2173                                 cam_periph_unlock(periph);
2174                                 break;
2175                         }
2176                         if (softc->quirks & CD_Q_BCD_TRACKS) {
2177                                 /* we are going to have to convert the BCD
2178                                  * encoding on the cd to what is expected
2179                                  */
2180                                 th->starting_track =
2181                                         bcd2bin(th->starting_track);
2182                                 th->ending_track = bcd2bin(th->ending_track);
2183                         }
2184                         th->len = ntohs(th->len);
2185                         bcopy(th, addr, sizeof(*th));
2186                         kfree(th, M_SCSICD);
2187                         cam_periph_unlock(periph);
2188                 }
2189                 break;
2190         case CDIOREADTOCENTRYS:
2191                 {
2192                         struct cd_tocdata *data;
2193                         struct cd_toc_single *lead;
2194                         struct ioc_read_toc_entry *te =
2195                                 (struct ioc_read_toc_entry *) addr;
2196                         struct ioc_toc_header *th;
2197                         u_int32_t len, readlen, idx, num;
2198                         u_int32_t starting_track = te->starting_track;
2199
2200                         data = kmalloc(sizeof(*data), M_SCSICD, M_WAITOK);
2201                         lead = kmalloc(sizeof(*lead), M_SCSICD, M_WAITOK);
2202
2203                         cam_periph_lock(periph);
2204                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2205                                   ("trying to do CDIOREADTOCENTRYS\n"));
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                                 kprintf("scsi_cd: error in readtocentries, "
2213                                        "returning EINVAL\n");
2214                                 kfree(data, M_SCSICD);
2215                                 kfree(lead, M_SCSICD);
2216                                 cam_periph_unlock(periph);
2217                                 break;
2218                         }
2219
2220                         th = &data->header;
2221                         error = cdreadtoc(periph, 0, 0, (u_int8_t *)th,
2222                                           sizeof (*th), /*sense_flags*/0);
2223                         if (error) {
2224                                 kfree(data, M_SCSICD);
2225                                 kfree(lead, M_SCSICD);
2226                                 cam_periph_unlock(periph);
2227                                 break;
2228                         }
2229
2230                         if (softc->quirks & CD_Q_BCD_TRACKS) {
2231                                 /* we are going to have to convert the BCD
2232                                  * encoding on the cd to what is expected
2233                                  */
2234                                 th->starting_track =
2235                                     bcd2bin(th->starting_track);
2236                                 th->ending_track = bcd2bin(th->ending_track);
2237                         }
2238
2239                         if (starting_track == 0)
2240                                 starting_track = th->starting_track;
2241                         else if (starting_track == LEADOUT)
2242                                 starting_track = th->ending_track + 1;
2243                         else if (starting_track < th->starting_track ||
2244                                  starting_track > th->ending_track + 1) {
2245                                 kprintf("scsi_cd: error in readtocentries, "
2246                                        "returning EINVAL\n");
2247                                 kfree(data, M_SCSICD);
2248                                 kfree(lead, M_SCSICD);
2249                                 cam_periph_unlock(periph);
2250                                 error = EINVAL;
2251                                 break;
2252                         }
2253
2254                         /* calculate reading length without leadout entry */
2255                         readlen = (th->ending_track - starting_track + 1) *
2256                                   sizeof(struct cd_toc_entry);
2257
2258                         /* and with leadout entry */
2259                         len = readlen + sizeof(struct cd_toc_entry);
2260                         if (te->data_len < len) {
2261                                 len = te->data_len;
2262                                 if (readlen > len)
2263                                         readlen = len;
2264                         }
2265                         if (len > sizeof(data->entries)) {
2266                                 kprintf("scsi_cd: error in readtocentries, "
2267                                        "returning EINVAL\n");
2268                                 error = EINVAL;
2269                                 kfree(data, M_SCSICD);
2270                                 kfree(lead, M_SCSICD);
2271                                 cam_periph_unlock(periph);
2272                                 break;
2273                         }
2274                         num = len / sizeof(struct cd_toc_entry);
2275
2276                         if (readlen > 0) {
2277                                 error = cdreadtoc(periph, te->address_format,
2278                                                   starting_track,
2279                                                   (u_int8_t *)data,
2280                                                   readlen + sizeof (*th),
2281                                                   /*sense_flags*/0);
2282                                 if (error) {
2283                                         kfree(data, M_SCSICD);
2284                                         kfree(lead, M_SCSICD);
2285                                         cam_periph_unlock(periph);
2286                                         break;
2287                                 }
2288                         }
2289
2290                         /* make leadout entry if needed */
2291                         idx = starting_track + num - 1;
2292                         if (softc->quirks & CD_Q_BCD_TRACKS)
2293                                 th->ending_track = bcd2bin(th->ending_track);
2294                         if (idx == th->ending_track + 1) {
2295                                 error = cdreadtoc(periph, te->address_format,
2296                                                   LEADOUT, (u_int8_t *)lead,
2297                                                   sizeof(*lead),
2298                                                   /*sense_flags*/0);
2299                                 if (error) {
2300                                         kfree(data, M_SCSICD);
2301                                         kfree(lead, M_SCSICD);
2302                                         cam_periph_unlock(periph);
2303                                         break;
2304                                 }
2305                                 data->entries[idx - starting_track] =
2306                                         lead->entry;
2307                         }
2308                         if (softc->quirks & CD_Q_BCD_TRACKS) {
2309                                 for (idx = 0; idx < num - 1; idx++) {
2310                                         data->entries[idx].track =
2311                                             bcd2bin(data->entries[idx].track);
2312                                 }
2313                         }
2314
2315                         cam_periph_unlock(periph);
2316                         error = copyout(data->entries, te->data, len);
2317                         kfree(data, M_SCSICD);
2318                         kfree(lead, M_SCSICD);
2319                 }
2320                 break;
2321         case CDIOREADTOCENTRY:
2322                 {
2323                         struct cd_toc_single *data;
2324                         struct ioc_read_toc_single_entry *te =
2325                                 (struct ioc_read_toc_single_entry *) addr;
2326                         struct ioc_toc_header *th;
2327                         u_int32_t track;
2328
2329                         data = kmalloc(sizeof(*data), M_SCSICD, M_WAITOK);
2330
2331                         cam_periph_lock(periph);
2332                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2333                                   ("trying to do CDIOREADTOCENTRY\n"));
2334
2335                         if (te->address_format != CD_MSF_FORMAT
2336                             && te->address_format != CD_LBA_FORMAT) {
2337                                 kprintf("error in readtocentry, "
2338                                        " returning EINVAL\n");
2339                                 kfree(data, M_SCSICD);
2340                                 error = EINVAL;
2341                                 cam_periph_unlock(periph);
2342                                 break;
2343                         }
2344
2345                         th = &data->header;
2346                         error = cdreadtoc(periph, 0, 0, (u_int8_t *)th,
2347                                           sizeof (*th), /*sense_flags*/0);
2348                         if (error) {
2349                                 kfree(data, M_SCSICD);
2350                                 cam_periph_unlock(periph);
2351                                 break;
2352                         }
2353
2354                         if (softc->quirks & CD_Q_BCD_TRACKS) {
2355                                 /* we are going to have to convert the BCD
2356                                  * encoding on the cd to what is expected
2357                                  */
2358                                 th->starting_track =
2359                                     bcd2bin(th->starting_track);
2360                                 th->ending_track = bcd2bin(th->ending_track);
2361                         }
2362                         track = te->track;
2363                         if (track == 0)
2364                                 track = th->starting_track;
2365                         else if (track == LEADOUT)
2366                                 /* OK */;
2367                         else if (track < th->starting_track ||
2368                                  track > th->ending_track + 1) {
2369                                 kprintf("error in readtocentry, "
2370                                        " returning EINVAL\n");
2371                                 kfree(data, M_SCSICD);
2372                                 error = EINVAL;
2373                                 cam_periph_unlock(periph);
2374                                 break;
2375                         }
2376
2377                         error = cdreadtoc(periph, te->address_format, track,
2378                                           (u_int8_t *)data, sizeof(*data),
2379                                           /*sense_flags*/0);
2380                         if (error) {
2381                                 kfree(data, M_SCSICD);
2382                                 cam_periph_unlock(periph);
2383                                 break;
2384                         }
2385
2386                         if (softc->quirks & CD_Q_BCD_TRACKS)
2387                                 data->entry.track = bcd2bin(data->entry.track);
2388                         bcopy(&data->entry, &te->entry,
2389                               sizeof(struct cd_toc_entry));
2390                         kfree(data, M_SCSICD);
2391                         cam_periph_unlock(periph);
2392                 }
2393                 break;
2394         case CDIOCSETPATCH:
2395                 {
2396                         struct ioc_patch *arg = (struct ioc_patch *)addr;
2397                         struct cd_mode_params params;
2398                         union cd_pages *page;
2399
2400                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2401                         params.mode_buf = kmalloc(params.alloc_len, M_SCSICD,
2402                                                  M_WAITOK | M_ZERO);
2403
2404                         cam_periph_lock(periph);
2405                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2406                                   ("trying to do CDIOCSETPATCH\n"));
2407
2408                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2409                         if (error) {
2410                                 kfree(params.mode_buf, M_SCSICD);
2411                                 cam_periph_unlock(periph);
2412                                 break;
2413                         }
2414                         page = cdgetpage(&params);
2415
2416                         page->audio.port[LEFT_PORT].channels =
2417                                 arg->patch[0];
2418                         page->audio.port[RIGHT_PORT].channels =
2419                                 arg->patch[1];
2420                         page->audio.port[2].channels = arg->patch[2];
2421                         page->audio.port[3].channels = arg->patch[3];
2422                         error = cdsetmode(periph, &params);
2423                         kfree(params.mode_buf, M_SCSICD);
2424                         cam_periph_unlock(periph);
2425                 }
2426                 break;
2427         case CDIOCGETVOL:
2428                 {
2429                         struct ioc_vol *arg = (struct ioc_vol *) addr;
2430                         struct cd_mode_params params;
2431                         union cd_pages *page;
2432
2433                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2434                         params.mode_buf = kmalloc(params.alloc_len, M_SCSICD,
2435                                                  M_WAITOK | M_ZERO);
2436
2437                         cam_periph_lock(periph);
2438                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2439                                   ("trying to do CDIOCGETVOL\n"));
2440
2441                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2442                         if (error) {
2443                                 kfree(params.mode_buf, M_SCSICD);
2444                                 cam_periph_unlock(periph);
2445                                 break;
2446                         }
2447                         page = cdgetpage(&params);
2448
2449                         arg->vol[LEFT_PORT] =
2450                                 page->audio.port[LEFT_PORT].volume;
2451                         arg->vol[RIGHT_PORT] =
2452                                 page->audio.port[RIGHT_PORT].volume;
2453                         arg->vol[2] = page->audio.port[2].volume;
2454                         arg->vol[3] = page->audio.port[3].volume;
2455                         kfree(params.mode_buf, M_SCSICD);
2456                         cam_periph_unlock(periph);
2457                 }
2458                 break;
2459         case CDIOCSETVOL:
2460                 {
2461                         struct ioc_vol *arg = (struct ioc_vol *) addr;
2462                         struct cd_mode_params params;
2463                         union cd_pages *page;
2464
2465                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2466                         params.mode_buf = kmalloc(params.alloc_len, M_SCSICD,
2467                                                  M_WAITOK | M_ZERO);
2468
2469                         cam_periph_lock(periph);
2470                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2471                                   ("trying to do CDIOCSETVOL\n"));
2472
2473                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2474                         if (error) {
2475                                 kfree(params.mode_buf, M_SCSICD);
2476                                 cam_periph_unlock(periph);
2477                                 break;
2478                         }
2479                         page = cdgetpage(&params);
2480
2481                         page->audio.port[LEFT_PORT].channels = CHANNEL_0;
2482                         page->audio.port[LEFT_PORT].volume =
2483                                 arg->vol[LEFT_PORT];
2484                         page->audio.port[RIGHT_PORT].channels = CHANNEL_1;
2485                         page->audio.port[RIGHT_PORT].volume =
2486                                 arg->vol[RIGHT_PORT];
2487                         page->audio.port[2].volume = arg->vol[2];
2488                         page->audio.port[3].volume = arg->vol[3];
2489                         error = cdsetmode(periph, &params);
2490                         cam_periph_unlock(periph);
2491                         kfree(params.mode_buf, M_SCSICD);
2492                 }
2493                 break;
2494         case CDIOCSETMONO:
2495                 {
2496                         struct cd_mode_params params;
2497                         union cd_pages *page;
2498
2499                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2500                         params.mode_buf = kmalloc(params.alloc_len, M_SCSICD,
2501                                                  M_WAITOK | M_ZERO);
2502
2503                         cam_periph_lock(periph);
2504                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2505                                   ("trying to do CDIOCSETMONO\n"));
2506
2507                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2508                         if (error) {
2509                                 kfree(params.mode_buf, M_SCSICD);
2510                                 cam_periph_unlock(periph);
2511                                 break;
2512                         }
2513                         page = cdgetpage(&params);
2514
2515                         page->audio.port[LEFT_PORT].channels =
2516                                 LEFT_CHANNEL | RIGHT_CHANNEL;
2517                         page->audio.port[RIGHT_PORT].channels =
2518                                 LEFT_CHANNEL | RIGHT_CHANNEL;
2519                         page->audio.port[2].channels = 0;
2520                         page->audio.port[3].channels = 0;
2521                         error = cdsetmode(periph, &params);
2522                         cam_periph_unlock(periph);
2523                         kfree(params.mode_buf, M_SCSICD);
2524                 }
2525                 break;
2526         case CDIOCSETSTEREO:
2527                 {
2528                         struct cd_mode_params params;
2529                         union cd_pages *page;
2530
2531                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2532                         params.mode_buf = kmalloc(params.alloc_len, M_SCSICD,
2533                                                  M_WAITOK | M_ZERO);
2534
2535                         cam_periph_lock(periph);
2536                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2537                                   ("trying to do CDIOCSETSTEREO\n"));
2538
2539                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2540                         if (error) {
2541                                 kfree(params.mode_buf, M_SCSICD);
2542                                 cam_periph_unlock(periph);
2543                                 break;
2544                         }
2545                         page = cdgetpage(&params);
2546
2547                         page->audio.port[LEFT_PORT].channels =
2548                                 LEFT_CHANNEL;
2549                         page->audio.port[RIGHT_PORT].channels =
2550                                 RIGHT_CHANNEL;
2551                         page->audio.port[2].channels = 0;
2552                         page->audio.port[3].channels = 0;
2553                         error = cdsetmode(periph, &params);
2554                         kfree(params.mode_buf, M_SCSICD);
2555                         cam_periph_unlock(periph);
2556                 }
2557                 break;
2558         case CDIOCSETMUTE:
2559                 {
2560                         struct cd_mode_params params;
2561                         union cd_pages *page;
2562
2563                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2564                         params.mode_buf = kmalloc(params.alloc_len, M_SCSICD,
2565                                                  M_WAITOK | M_ZERO);
2566
2567                         cam_periph_lock(periph);
2568                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2569                                   ("trying to do CDIOCSETMUTE\n"));
2570
2571                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2572                         if (error) {
2573                                 kfree(&params, M_SCSICD);
2574                                 cam_periph_unlock(periph);
2575                                 break;
2576                         }
2577                         page = cdgetpage(&params);
2578
2579                         page->audio.port[LEFT_PORT].channels = 0;
2580                         page->audio.port[RIGHT_PORT].channels = 0;
2581                         page->audio.port[2].channels = 0;
2582                         page->audio.port[3].channels = 0;
2583                         error = cdsetmode(periph, &params);
2584                         kfree(params.mode_buf, M_SCSICD);
2585                         cam_periph_unlock(periph);
2586                 }
2587                 break;
2588         case CDIOCSETLEFT:
2589                 {
2590                         struct cd_mode_params params;
2591                         union cd_pages *page;
2592
2593                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2594                         params.mode_buf = kmalloc(params.alloc_len, M_SCSICD,
2595                                                  M_WAITOK | M_ZERO);
2596
2597                         cam_periph_lock(periph);
2598                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2599                                   ("trying to do CDIOCSETLEFT\n"));
2600
2601                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2602                         if (error) {
2603                                 kfree(params.mode_buf, M_SCSICD);
2604                                 cam_periph_unlock(periph);
2605                                 break;
2606                         }
2607                         page = cdgetpage(&params);
2608
2609                         page->audio.port[LEFT_PORT].channels = LEFT_CHANNEL;
2610                         page->audio.port[RIGHT_PORT].channels = LEFT_CHANNEL;
2611                         page->audio.port[2].channels = 0;
2612                         page->audio.port[3].channels = 0;
2613                         error = cdsetmode(periph, &params);
2614                         kfree(params.mode_buf, M_SCSICD);
2615                         cam_periph_unlock(periph);
2616                 }
2617                 break;
2618         case CDIOCSETRIGHT:
2619                 {
2620                         struct cd_mode_params params;
2621                         union cd_pages *page;
2622
2623                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2624                         params.mode_buf = kmalloc(params.alloc_len, M_SCSICD,
2625                                                  M_WAITOK | M_ZERO);
2626
2627                         cam_periph_lock(periph);
2628                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2629                                   ("trying to do CDIOCSETRIGHT\n"));
2630
2631                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2632                         if (error) {
2633                                 kfree(params.mode_buf, M_SCSICD);
2634                                 cam_periph_unlock(periph);
2635                                 break;
2636                         }
2637                         page = cdgetpage(&params);
2638
2639                         page->audio.port[LEFT_PORT].channels = RIGHT_CHANNEL;
2640                         page->audio.port[RIGHT_PORT].channels = RIGHT_CHANNEL;
2641                         page->audio.port[2].channels = 0;
2642                         page->audio.port[3].channels = 0;
2643                         error = cdsetmode(periph, &params);
2644                         kfree(params.mode_buf, M_SCSICD);
2645                         cam_periph_unlock(periph);
2646                 }
2647                 break;
2648         case CDIOCRESUME:
2649                 cam_periph_lock(periph);
2650                 error = cdpause(periph, 1);
2651                 cam_periph_unlock(periph);
2652                 break;
2653         case CDIOCPAUSE:
2654                 cam_periph_lock(periph);
2655                 error = cdpause(periph, 0);
2656                 cam_periph_unlock(periph);
2657                 break;
2658         case CDIOCSTART:
2659                 cam_periph_lock(periph);
2660                 error = cdstartunit(periph, 0);
2661                 cam_periph_unlock(periph);
2662                 break;
2663         case CDIOCCLOSE:
2664                 cam_periph_lock(periph);
2665                 error = cdstartunit(periph, 1);
2666                 cam_periph_unlock(periph);
2667                 break;
2668         case CDIOCSTOP:
2669                 cam_periph_lock(periph);
2670                 error = cdstopunit(periph, 0);
2671                 cam_periph_unlock(periph);
2672                 break;
2673         case CDIOCEJECT:
2674                 cam_periph_lock(periph);
2675                 error = cdstopunit(periph, 1);
2676                 cam_periph_unlock(periph);
2677                 break;
2678         case CDIOCALLOW:
2679                 cam_periph_lock(periph);
2680                 cdprevent(periph, PR_ALLOW);
2681                 cam_periph_unlock(periph);
2682                 break;
2683         case CDIOCPREVENT:
2684                 cam_periph_lock(periph);
2685                 cdprevent(periph, PR_PREVENT);
2686                 cam_periph_unlock(periph);
2687                 break;
2688         case CDIOCSETDEBUG:
2689                 /* sc_link->flags |= (SDEV_DB1 | SDEV_DB2); */
2690                 error = ENOTTY;
2691                 break;
2692         case CDIOCCLRDEBUG:
2693                 /* sc_link->flags &= ~(SDEV_DB1 | SDEV_DB2); */
2694                 error = ENOTTY;
2695                 break;
2696         case CDIOCRESET:
2697                 /* return (cd_reset(periph)); */
2698                 error = ENOTTY;
2699                 break;
2700         case CDRIOCREADSPEED:
2701                 cam_periph_lock(periph);
2702                 error = cdsetspeed(periph, *(u_int32_t *)addr, CDR_MAX_SPEED);
2703                 cam_periph_unlock(periph);
2704                 break;
2705         case CDRIOCWRITESPEED:
2706                 cam_periph_lock(periph);
2707                 error = cdsetspeed(periph, CDR_MAX_SPEED, *(u_int32_t *)addr);
2708                 cam_periph_unlock(periph);
2709                 break;
2710         case DVDIOCSENDKEY:
2711         case DVDIOCREPORTKEY: {
2712                 struct dvd_authinfo *authinfo;
2713
2714                 authinfo = (struct dvd_authinfo *)addr;
2715
2716                 cam_periph_lock(periph);
2717                 if (ap->a_cmd == DVDIOCREPORTKEY)
2718                         error = cdreportkey(periph, authinfo);
2719                 else
2720                         error = cdsendkey(periph, authinfo);
2721                 cam_periph_unlock(periph);
2722                 break;
2723         }
2724         case DVDIOCREADSTRUCTURE: {
2725                 struct dvd_struct *dvdstruct;
2726
2727                 dvdstruct = (struct dvd_struct *)addr;
2728
2729                 cam_periph_lock(periph);
2730                 error = cdreaddvdstructure(periph, dvdstruct);
2731                 cam_periph_unlock(periph);
2732
2733                 break;
2734         }
2735         default:
2736                 cam_periph_lock(periph);
2737                 error = cam_periph_ioctl(periph, ap->a_cmd, addr, cderror);
2738                 cam_periph_unlock(periph);
2739                 break;
2740         }
2741
2742         cam_periph_lock(periph);
2743         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("leaving cdioctl\n"));
2744         cam_periph_unhold(periph, 1);
2745
2746         return (error);
2747 }
2748
2749 static void
2750 cdprevent(struct cam_periph *periph, int action)
2751 {
2752         union   ccb *ccb;
2753         struct  cd_softc *softc;
2754         int     error;
2755
2756         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("entering cdprevent\n"));
2757
2758         softc = (struct cd_softc *)periph->softc;
2759
2760         if (((action == PR_ALLOW)
2761           && (softc->flags & CD_FLAG_DISC_LOCKED) == 0)
2762          || ((action == PR_PREVENT)
2763           && (softc->flags & CD_FLAG_DISC_LOCKED) != 0)) {
2764                 return;
2765         }
2766
2767         ccb = cdgetccb(periph, /* priority */ 1);
2768
2769         scsi_prevent(&ccb->csio,
2770                      /*retries*/ 1,
2771                      cddone,
2772                      MSG_SIMPLE_Q_TAG,
2773                      action,
2774                      SSD_FULL_SIZE,
2775                      /* timeout */60000);
2776
2777         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
2778                         /*sense_flags*/SF_RETRY_UA|SF_NO_PRINT);
2779
2780         xpt_release_ccb(ccb);
2781
2782         if (error == 0) {
2783                 if (action == PR_ALLOW)
2784                         softc->flags &= ~CD_FLAG_DISC_LOCKED;
2785                 else
2786                         softc->flags |= CD_FLAG_DISC_LOCKED;
2787         }
2788 }
2789
2790 int
2791 cdcheckmedia(struct cam_periph *periph)
2792 {
2793         struct cd_softc *softc;
2794         struct ioc_toc_header *toch;
2795         struct cd_toc_single leadout;
2796         struct ccb_getdev cgd;
2797         u_int32_t size, toclen;
2798         int error, num_entries, cdindex;
2799         int first_track_audio;
2800         struct disk_info info;
2801
2802         softc = (struct cd_softc *)periph->softc;
2803
2804         first_track_audio = -1;
2805         error = 0;
2806
2807         /*
2808          * Set up disk info fields and tell the disk subsystem to reset
2809          * its internal copy of the label.
2810          */
2811         bzero(&info, sizeof(info));
2812         info.d_type = DTYPE_SCSI;
2813         info.d_dsflags &= ~DSO_COMPATLABEL;
2814         info.d_dsflags |= DSO_NOLABELS | DSO_COMPATPARTA;
2815         info.d_serialno = xpt_path_serialno(periph->path);
2816
2817         /*
2818          * Grab the inquiry data to get the vendor and product names.
2819          * Put them in the typename and packname for the label.
2820          */
2821         xpt_setup_ccb(&cgd.ccb_h, periph->path, /*priority*/ 1);
2822         cgd.ccb_h.func_code = XPT_GDEV_TYPE;
2823         xpt_action((union ccb *)&cgd);
2824
2825 #if 0
2826         strncpy(label->d_typename, cgd.inq_data.vendor,
2827                 min(SID_VENDOR_SIZE, sizeof(label->d_typename)));
2828         strncpy(label->d_packname, cgd.inq_data.product,
2829                 min(SID_PRODUCT_SIZE, sizeof(label->d_packname)));
2830 #endif
2831         /*
2832          * Clear the valid media and TOC flags until we've verified that we
2833          * have both.
2834          */
2835         softc->flags &= ~(CD_FLAG_VALID_MEDIA|CD_FLAG_VALID_TOC);
2836
2837         /*
2838          * Get the disc size and block size.  If we can't get it, we don't
2839          * have media, most likely.
2840          */
2841         if ((error = cdsize(periph, &size)) != 0) {
2842                 /*
2843                  * Set a bogus sector size, so the slice code won't try to
2844                  * divide by 0 and panic the kernel.
2845                  */
2846                 info.d_media_blksize = 2048;
2847                 disk_setdiskinfo(&softc->disk, &info);
2848
2849                 /*
2850                  * Tell devstat(9) we don't have a blocksize.
2851                  */
2852                 softc->device_stats.flags |= DEVSTAT_BS_UNAVAILABLE;
2853
2854                 return (error);
2855         } else {
2856                 info.d_media_blksize = softc->params.blksize;
2857                 info.d_media_blocks = softc->params.disksize;
2858                 disk_setdiskinfo(&softc->disk, &info);
2859
2860                 /*
2861                  * We unconditionally (re)set the blocksize each time the
2862                  * CD device is opened.  This is because the CD can change,
2863                  * and therefore the blocksize might change.
2864                  * XXX problems here if some slice or partition is still
2865                  * open with the old size?
2866                  */
2867                 if ((softc->device_stats.flags & DEVSTAT_BS_UNAVAILABLE) != 0)
2868                         softc->device_stats.flags &= ~DEVSTAT_BS_UNAVAILABLE;
2869                 softc->device_stats.block_size = softc->params.blksize;
2870
2871                 softc->flags |= CD_FLAG_VALID_MEDIA;
2872         }
2873
2874         /*
2875          * Now we check the table of contents.  This (currently) is only
2876          * used for the CDIOCPLAYTRACKS ioctl.  It may be used later to do
2877          * things like present a separate entry in /dev for each track,
2878          * like that acd(4) driver does.
2879          */
2880         bzero(&softc->toc, sizeof(softc->toc));
2881         toch = &softc->toc.header;
2882
2883         /*
2884          * We will get errors here for media that doesn't have a table of
2885          * contents.  According to the MMC-3 spec: "When a Read TOC/PMA/ATIP
2886          * command is presented for a DDCD/CD-R/RW media, where the first TOC
2887          * has not been recorded (no complete session) and the Format codes
2888          * 0000b, 0001b, or 0010b are specified, this command shall be rejected
2889          * with an INVALID FIELD IN CDB.  Devices that are not capable of
2890          * reading an incomplete session on DDC/CD-R/RW media shall report
2891          * CANNOT READ MEDIUM - INCOMPATIBLE FORMAT."
2892          *
2893          * So this isn't fatal if we can't read the table of contents, it
2894          * just means that the user won't be able to issue the play tracks
2895          * ioctl, and likely lots of other stuff won't work either.  They
2896          * need to burn the CD before we can do a whole lot with it.  So
2897          * we don't print anything here if we get an error back.
2898          */
2899         error = cdreadtoc(periph, 0, 0, (u_int8_t *)toch, sizeof(*toch),
2900                           SF_NO_PRINT);
2901         /*
2902          * Errors in reading the table of contents aren't fatal, we just
2903          * won't have a valid table of contents cached.
2904          */
2905         if (error != 0) {
2906                 error = 0;
2907                 bzero(&softc->toc, sizeof(softc->toc));
2908                 goto bailout;
2909         }
2910
2911         if (softc->quirks & CD_Q_BCD_TRACKS) {
2912                 toch->starting_track = bcd2bin(toch->starting_track);
2913                 toch->ending_track = bcd2bin(toch->ending_track);
2914         }
2915
2916         /* Number of TOC entries, plus leadout */
2917         num_entries = (toch->ending_track - toch->starting_track) + 2;
2918
2919         if (num_entries <= 0)
2920                 goto bailout;
2921
2922         toclen = num_entries * sizeof(struct cd_toc_entry);
2923
2924         error = cdreadtoc(periph, CD_MSF_FORMAT, toch->starting_track,
2925                           (u_int8_t *)&softc->toc, toclen + sizeof(*toch),
2926                           SF_NO_PRINT);
2927         if (error != 0) {
2928                 error = 0;
2929                 bzero(&softc->toc, sizeof(softc->toc));
2930                 goto bailout;
2931         }
2932
2933         if (softc->quirks & CD_Q_BCD_TRACKS) {
2934                 toch->starting_track = bcd2bin(toch->starting_track);
2935                 toch->ending_track = bcd2bin(toch->ending_track);
2936         }
2937         toch->len = scsi_2btoul((uint8_t *)&toch->len);
2938
2939         /*
2940          * XXX KDM is this necessary?  Probably only if the drive doesn't
2941          * return leadout information with the table of contents.
2942          */
2943         cdindex = toch->starting_track + num_entries -1;
2944         if (cdindex == toch->ending_track + 1) {
2945
2946                 error = cdreadtoc(periph, CD_MSF_FORMAT, LEADOUT,
2947                                   (u_int8_t *)&leadout, sizeof(leadout),
2948                                   SF_NO_PRINT);
2949                 if (error != 0) {
2950                         error = 0;
2951                         goto bailout;
2952                 }
2953                 softc->toc.entries[cdindex - toch->starting_track] =
2954                         leadout.entry;
2955         }
2956         if (softc->quirks & CD_Q_BCD_TRACKS) {
2957                 for (cdindex = 0; cdindex < (num_entries - 1); cdindex++) {
2958                         softc->toc.entries[cdindex].track =
2959                                 bcd2bin(softc->toc.entries[cdindex].track);
2960                 }
2961         }
2962
2963         /*
2964          * Run through the TOC entries, find the first entry and determine
2965          * whether it is an audio or data track.
2966          */
2967         for (cdindex = 0; cdindex < (num_entries - 1); cdindex++) {
2968                 if (softc->toc.entries[cdindex].track == toch->starting_track) {
2969                         if (softc->toc.entries[cdindex].control & 0x04)
2970                                 first_track_audio = 0;
2971                         else
2972                                 first_track_audio = 1;
2973                         break;
2974                 }
2975         }
2976
2977         /*
2978          * If first_track_audio is non-zero, we either have an error (e.g.
2979          * couldn't find the starting track) or the first track is an audio
2980          * track.  If first_track_audio is 0, the first track is a data
2981          * track that could have a disklabel.  Attempt to read the
2982          * disklabel off the media, just in case the user put one there.
2983          */
2984         if (first_track_audio == 0) {
2985                 info.d_dsflags |= DSO_COMPATLABEL;
2986                 info.d_dsflags &= ~DSO_NOLABELS;
2987                 disk_setdiskinfo(&softc->disk, &info);
2988         }
2989         softc->flags |= CD_FLAG_VALID_TOC;
2990
2991 bailout:
2992         return (error);
2993 }
2994
2995 static int
2996 cdsize(struct cam_periph *periph, u_int32_t *size)
2997 {
2998         struct cd_softc *softc;
2999         union ccb *ccb;
3000         struct scsi_read_capacity_data *rcap_buf;
3001         int error;
3002
3003         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("entering cdsize\n"));
3004
3005         softc = (struct cd_softc *)periph->softc;
3006
3007         ccb = cdgetccb(periph, /* priority */ 1);
3008
3009         rcap_buf = kmalloc(sizeof(struct scsi_read_capacity_data),
3010                           M_SCSICD, M_INTWAIT | M_ZERO);
3011
3012         scsi_read_capacity(&ccb->csio,
3013                            /*retries*/ 1,
3014                            cddone,
3015                            MSG_SIMPLE_Q_TAG,
3016                            rcap_buf,
3017                            SSD_FULL_SIZE,
3018                            /* timeout */20000);
3019
3020         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3021                          /*sense_flags*/SF_RETRY_UA|SF_NO_PRINT);
3022
3023         xpt_release_ccb(ccb);
3024
3025         softc->params.disksize = scsi_4btoul(rcap_buf->addr) + 1;
3026         softc->params.blksize  = scsi_4btoul(rcap_buf->length);
3027         /*
3028          * SCSI-3 mandates that the reported blocksize shall be 2048.
3029          * Older drives sometimes report funny values, trim it down to
3030          * 2048, or other parts of the kernel will get confused.
3031          *
3032          * XXX we leave drives alone that might report 512 bytes, as
3033          * well as drives reporting more weird sizes like perhaps 4K.
3034          */
3035         if (softc->params.blksize > 2048 && softc->params.blksize <= 2352)
3036                 softc->params.blksize = 2048;
3037
3038         kfree(rcap_buf, M_SCSICD);
3039         *size = softc->params.disksize;
3040
3041         return (error);
3042
3043 }
3044
3045 static int
3046 cd6byteworkaround(union ccb *ccb)
3047 {
3048         u_int8_t *cdb;
3049         struct cam_periph *periph;
3050         struct cd_softc *softc;
3051         struct cd_mode_params *params;
3052         int frozen, found;
3053
3054         periph = xpt_path_periph(ccb->ccb_h.path);
3055         softc = (struct cd_softc *)periph->softc;
3056
3057         cdb = ccb->csio.cdb_io.cdb_bytes;
3058
3059         if ((ccb->ccb_h.flags & CAM_CDB_POINTER)
3060          || ((cdb[0] != MODE_SENSE_6)
3061           && (cdb[0] != MODE_SELECT_6)))
3062                 return (0);
3063
3064         /*
3065          * Because there is no convenient place to stash the overall
3066          * cd_mode_params structure pointer, we have to grab it like this.
3067          * This means that ALL MODE_SENSE and MODE_SELECT requests in the
3068          * cd(4) driver MUST go through cdgetmode() and cdsetmode()!
3069          *
3070          * XXX It would be nice if, at some point, we could increase the
3071          * number of available peripheral private pointers.  Both pointers
3072          * are currently used in most every peripheral driver.
3073          */
3074         found = 0;
3075
3076         STAILQ_FOREACH(params, &softc->mode_queue, links) {
3077                 if (params->mode_buf == ccb->csio.data_ptr) {
3078                         found = 1;
3079                         break;
3080                 }
3081         }
3082
3083         /*
3084          * This shouldn't happen.  All mode sense and mode select
3085          * operations in the cd(4) driver MUST go through cdgetmode() and
3086          * cdsetmode()!
3087          */
3088         if (found == 0) {
3089                 xpt_print(periph->path,
3090                     "mode buffer not found in mode queue!\n");
3091                 return (0);
3092         }
3093
3094         params->cdb_size = 10;
3095         softc->minimum_command_size = 10;
3096         xpt_print(ccb->ccb_h.path,
3097             "%s(6) failed, increasing minimum CDB size to 10 bytes\n",
3098             (cdb[0] == MODE_SENSE_6) ? "MODE_SENSE" : "MODE_SELECT");
3099
3100         if (cdb[0] == MODE_SENSE_6) {
3101                 struct scsi_mode_sense_10 ms10;
3102                 struct scsi_mode_sense_6 *ms6;
3103                 int len;
3104
3105                 ms6 = (struct scsi_mode_sense_6 *)cdb;
3106
3107                 bzero(&ms10, sizeof(ms10));
3108                 ms10.opcode = MODE_SENSE_10;
3109                 ms10.byte2 = ms6->byte2;
3110                 ms10.page = ms6->page;
3111
3112                 /*
3113                  * 10 byte mode header, block descriptor,
3114                  * sizeof(union cd_pages)
3115                  */
3116                 len = sizeof(struct cd_mode_data_10);
3117                 ccb->csio.dxfer_len = len;
3118
3119                 scsi_ulto2b(len, ms10.length);
3120                 ms10.control = ms6->control;
3121                 bcopy(&ms10, cdb, 10);
3122                 ccb->csio.cdb_len = 10;
3123         } else {
3124                 struct scsi_mode_select_10 ms10;
3125                 struct scsi_mode_select_6 *ms6;
3126                 struct scsi_mode_header_6 *header6;
3127                 struct scsi_mode_header_10 *header10;
3128                 struct scsi_mode_page_header *page_header;
3129                 int blk_desc_len, page_num, page_size, len;
3130
3131                 ms6 = (struct scsi_mode_select_6 *)cdb;
3132
3133                 bzero(&ms10, sizeof(ms10));
3134                 ms10.opcode = MODE_SELECT_10;
3135                 ms10.byte2 = ms6->byte2;
3136
3137                 header6 = (struct scsi_mode_header_6 *)params->mode_buf;
3138                 header10 = (struct scsi_mode_header_10 *)params->mode_buf;
3139
3140                 page_header = find_mode_page_6(header6);
3141                 page_num = page_header->page_code;
3142
3143                 blk_desc_len = header6->blk_desc_len;
3144
3145                 page_size = cdgetpagesize(page_num);
3146
3147                 if (page_size != (page_header->page_length +
3148                     sizeof(*page_header)))
3149                         page_size = page_header->page_length +
3150                                 sizeof(*page_header);
3151
3152                 len = sizeof(*header10) + blk_desc_len + page_size;
3153
3154                 len = min(params->alloc_len, len);
3155
3156                 /*
3157                  * Since the 6 byte parameter header is shorter than the 10
3158                  * byte parameter header, we need to copy the actual mode
3159                  * page data, and the block descriptor, if any, so things wind
3160                  * up in the right place.  The regions will overlap, but
3161                  * bcopy() does the right thing.
3162                  */
3163                 bcopy(params->mode_buf + sizeof(*header6),
3164                       params->mode_buf + sizeof(*header10),
3165                       len - sizeof(*header10));
3166
3167                 /* Make sure these fields are set correctly. */
3168                 scsi_ulto2b(0, header10->data_length);
3169                 header10->medium_type = 0;
3170                 scsi_ulto2b(blk_desc_len, header10->blk_desc_len);
3171
3172                 ccb->csio.dxfer_len = len;
3173
3174                 scsi_ulto2b(len, ms10.length);
3175                 ms10.control = ms6->control;
3176                 bcopy(&ms10, cdb, 10);
3177                 ccb->csio.cdb_len = 10;
3178         }
3179
3180         frozen = (ccb->ccb_h.status & CAM_DEV_QFRZN) != 0;
3181         ccb->ccb_h.status = CAM_REQUEUE_REQ;
3182         xpt_action(ccb);
3183         if (frozen) {
3184                 cam_release_devq(ccb->ccb_h.path,
3185                                  /*relsim_flags*/0,
3186                                  /*openings*/0,
3187                                  /*timeout*/0,
3188                                  /*getcount_only*/0);
3189         }
3190
3191         return (ERESTART);
3192 }
3193
3194 static int
3195 cderror(union ccb *ccb, u_int32_t cam_flags, u_int32_t sense_flags)
3196 {
3197         struct cd_softc *softc;
3198         struct cam_periph *periph;
3199         int error;
3200
3201         periph = xpt_path_periph(ccb->ccb_h.path);
3202         softc = (struct cd_softc *)periph->softc;
3203
3204         error = 0;
3205
3206         /*
3207          * We use a status of CAM_REQ_INVALID as shorthand -- if a 6 byte
3208          * CDB comes back with this particular error, try transforming it
3209          * into the 10 byte version.
3210          */
3211         if ((ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_INVALID) {
3212                 error = cd6byteworkaround(ccb);
3213         } else if (((ccb->ccb_h.status & CAM_STATUS_MASK) ==
3214                      CAM_SCSI_STATUS_ERROR)
3215          && (ccb->ccb_h.status & CAM_AUTOSNS_VALID)
3216          && (ccb->csio.scsi_status == SCSI_STATUS_CHECK_COND)
3217          && ((ccb->ccb_h.flags & CAM_SENSE_PHYS) == 0)
3218          && ((ccb->ccb_h.flags & CAM_SENSE_PTR) == 0)) {
3219                 int sense_key, error_code, asc, ascq;
3220
3221                 scsi_extract_sense(&ccb->csio.sense_data,
3222                                    &error_code, &sense_key, &asc, &ascq);
3223                 if (sense_key == SSD_KEY_ILLEGAL_REQUEST)
3224                         error = cd6byteworkaround(ccb);
3225         }
3226
3227         if (error == ERESTART)
3228                 return (error);
3229
3230         /*
3231          * XXX
3232          * Until we have a better way of doing pack validation,
3233          * don't treat UAs as errors.
3234          */
3235         sense_flags |= SF_RETRY_UA;
3236         return (cam_periph_error(ccb, cam_flags, sense_flags,
3237                                  &softc->saved_ccb));
3238 }
3239
3240 /*
3241  * Read table of contents
3242  */
3243 static int
3244 cdreadtoc(struct cam_periph *periph, u_int32_t mode, u_int32_t start,
3245           u_int8_t *data, u_int32_t len, u_int32_t sense_flags)
3246 {
3247         struct scsi_read_toc *scsi_cmd;
3248         u_int32_t ntoc;
3249         struct ccb_scsiio *csio;
3250         union ccb *ccb;
3251         int error;
3252
3253         ntoc = len;
3254         error = 0;
3255
3256         ccb = cdgetccb(periph, /* priority */ 1);
3257
3258         csio = &ccb->csio;
3259
3260         cam_fill_csio(csio,
3261                       /* retries */ 1,
3262                       /* cbfcnp */ cddone,
3263                       /* flags */ CAM_DIR_IN,
3264                       /* tag_action */ MSG_SIMPLE_Q_TAG,
3265                       /* data_ptr */ data,
3266                       /* dxfer_len */ len,
3267                       /* sense_len */ SSD_FULL_SIZE,
3268                       sizeof(struct scsi_read_toc),
3269                       /* timeout */ 50000);
3270
3271         scsi_cmd = (struct scsi_read_toc *)&csio->cdb_io.cdb_bytes;
3272         bzero (scsi_cmd, sizeof(*scsi_cmd));
3273
3274         if (mode == CD_MSF_FORMAT)
3275                 scsi_cmd->byte2 |= CD_MSF;
3276         scsi_cmd->from_track = start;
3277         /* scsi_ulto2b(ntoc, (u_int8_t *)scsi_cmd->data_len); */
3278         scsi_cmd->data_len[0] = (ntoc) >> 8;
3279         scsi_cmd->data_len[1] = (ntoc) & 0xff;
3280
3281         scsi_cmd->op_code = READ_TOC;
3282
3283         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3284                          /*sense_flags*/SF_RETRY_UA | sense_flags);
3285
3286         xpt_release_ccb(ccb);
3287
3288         return(error);
3289 }
3290
3291 static int
3292 cdreadsubchannel(struct cam_periph *periph, u_int32_t mode,
3293                  u_int32_t format, int track,
3294                  struct cd_sub_channel_info *data, u_int32_t len)
3295 {
3296         struct scsi_read_subchannel *scsi_cmd;
3297         struct ccb_scsiio *csio;
3298         union ccb *ccb;
3299         int error;
3300
3301         error = 0;
3302
3303         ccb = cdgetccb(periph, /* priority */ 1);
3304
3305         csio = &ccb->csio;
3306
3307         cam_fill_csio(csio,
3308                       /* retries */ 1,
3309                       /* cbfcnp */ cddone,
3310                       /* flags */ CAM_DIR_IN,
3311                       /* tag_action */ MSG_SIMPLE_Q_TAG,
3312                       /* data_ptr */ (u_int8_t *)data,
3313                       /* dxfer_len */ len,
3314                       /* sense_len */ SSD_FULL_SIZE,
3315                       sizeof(struct scsi_read_subchannel),
3316                       /* timeout */ 50000);
3317
3318         scsi_cmd = (struct scsi_read_subchannel *)&csio->cdb_io.cdb_bytes;
3319         bzero (scsi_cmd, sizeof(*scsi_cmd));
3320
3321         scsi_cmd->op_code = READ_SUBCHANNEL;
3322         if (mode == CD_MSF_FORMAT)
3323                 scsi_cmd->byte1 |= CD_MSF;
3324         scsi_cmd->byte2 = SRS_SUBQ;
3325         scsi_cmd->subchan_format = format;
3326         scsi_cmd->track = track;
3327         scsi_ulto2b(len, (u_int8_t *)scsi_cmd->data_len);
3328         scsi_cmd->control = 0;
3329
3330         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3331                          /*sense_flags*/SF_RETRY_UA);
3332
3333         xpt_release_ccb(ccb);
3334
3335         return(error);
3336 }
3337
3338 /*
3339  * All MODE_SENSE requests in the cd(4) driver MUST go through this
3340  * routine.  See comments in cd6byteworkaround() for details.
3341  */
3342 static int
3343 cdgetmode(struct cam_periph *periph, struct cd_mode_params *data,
3344           u_int32_t page)
3345 {
3346         struct ccb_scsiio *csio;
3347         struct cd_softc *softc;
3348         union ccb *ccb;
3349         int param_len;
3350         int error;
3351
3352         softc = (struct cd_softc *)periph->softc;
3353
3354         ccb = cdgetccb(periph, /* priority */ 1);
3355
3356         csio = &ccb->csio;
3357
3358         data->cdb_size = softc->minimum_command_size;
3359         if (data->cdb_size < 10)
3360                 param_len = sizeof(struct cd_mode_data);
3361         else
3362                 param_len = sizeof(struct cd_mode_data_10);
3363
3364         /* Don't say we've got more room than we actually allocated */
3365         param_len = min(param_len, data->alloc_len);
3366
3367         scsi_mode_sense_len(csio,
3368                             /* retries */ 1,
3369                             /* cbfcnp */ cddone,
3370                             /* tag_action */ MSG_SIMPLE_Q_TAG,
3371                             /* dbd */ 0,
3372                             /* page_code */ SMS_PAGE_CTRL_CURRENT,
3373                             /* page */ page,
3374                             /* param_buf */ data->mode_buf,
3375                             /* param_len */ param_len,
3376                             /* minimum_cmd_size */ softc->minimum_command_size,
3377                             /* sense_len */ SSD_FULL_SIZE,
3378                             /* timeout */ 50000);
3379
3380         /*
3381          * It would be nice not to have to do this, but there's no
3382          * available pointer in the CCB that would allow us to stuff the
3383          * mode params structure in there and retrieve it in
3384          * cd6byteworkaround(), so we can set the cdb size.  The cdb size
3385          * lets the caller know what CDB size we ended up using, so they
3386          * can find the actual mode page offset.
3387          */
3388         STAILQ_INSERT_TAIL(&softc->mode_queue, data, links);
3389
3390         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3391                          /*sense_flags*/SF_RETRY_UA);
3392
3393         xpt_release_ccb(ccb);
3394
3395         STAILQ_REMOVE(&softc->mode_queue, data, cd_mode_params, links);
3396
3397         /*
3398          * This is a bit of belt-and-suspenders checking, but if we run
3399          * into a situation where the target sends back multiple block
3400          * descriptors, we might not have enough space in the buffer to
3401          * see the whole mode page.  Better to return an error than
3402          * potentially access memory beyond our malloced region.
3403          */
3404         if (error == 0) {
3405                 u_int32_t data_len;
3406
3407                 if (data->cdb_size == 10) {
3408                         struct scsi_mode_header_10 *hdr10;
3409
3410                         hdr10 = (struct scsi_mode_header_10 *)data->mode_buf;
3411                         data_len = scsi_2btoul(hdr10->data_length);
3412                         data_len += sizeof(hdr10->data_length);
3413                 } else {
3414                         struct scsi_mode_header_6 *hdr6;
3415
3416                         hdr6 = (struct scsi_mode_header_6 *)data->mode_buf;
3417                         data_len = hdr6->data_length;
3418                         data_len += sizeof(hdr6->data_length);
3419                 }
3420
3421                 /*
3422                  * Complain if there is more mode data available than we
3423                  * allocated space for.  This could potentially happen if
3424                  * we miscalculated the page length for some reason, if the
3425                  * drive returns multiple block descriptors, or if it sets
3426                  * the data length incorrectly.
3427                  */
3428                 if (data_len > data->alloc_len) {
3429                         xpt_print(periph->path, "allocated modepage %d length "
3430                             "%d < returned length %d\n", page, data->alloc_len,
3431                             data_len);
3432                         error = ENOSPC;
3433                 }
3434         }
3435         return (error);
3436 }
3437
3438 /*
3439  * All MODE_SELECT requests in the cd(4) driver MUST go through this
3440  * routine.  See comments in cd6byteworkaround() for details.
3441  */
3442 static int
3443 cdsetmode(struct cam_periph *periph, struct cd_mode_params *data)
3444 {
3445         struct ccb_scsiio *csio;
3446         struct cd_softc *softc;
3447         union ccb *ccb;
3448         int cdb_size, param_len;
3449         int error;
3450
3451         softc = (struct cd_softc *)periph->softc;
3452
3453         ccb = cdgetccb(periph, /* priority */ 1);
3454
3455         csio = &ccb->csio;
3456
3457         error = 0;
3458
3459         /*
3460          * If the data is formatted for the 10 byte version of the mode
3461          * select parameter list, we need to use the 10 byte CDB.
3462          * Otherwise, we use whatever the stored minimum command size.
3463          */
3464         if (data->cdb_size == 10)
3465                 cdb_size = data->cdb_size;
3466         else
3467                 cdb_size = softc->minimum_command_size;
3468
3469         if (cdb_size >= 10) {
3470                 struct scsi_mode_header_10 *mode_header;
3471                 u_int32_t data_len;
3472
3473                 mode_header = (struct scsi_mode_header_10 *)data->mode_buf;
3474
3475                 data_len = scsi_2btoul(mode_header->data_length);
3476
3477                 scsi_ulto2b(0, mode_header->data_length);
3478                 /*
3479                  * SONY drives do not allow a mode select with a medium_type
3480                  * value that has just been returned by a mode sense; use a
3481                  * medium_type of 0 (Default) instead.
3482                  */
3483                 mode_header->medium_type = 0;
3484
3485                 /*
3486                  * Pass back whatever the drive passed to us, plus the size
3487                  * of the data length field.
3488                  */
3489                 param_len = data_len + sizeof(mode_header->data_length);
3490
3491         } else {
3492                 struct scsi_mode_header_6 *mode_header;
3493
3494                 mode_header = (struct scsi_mode_header_6 *)data->mode_buf;
3495
3496                 param_len = mode_header->data_length + 1;
3497
3498                 mode_header->data_length = 0;
3499                 /*
3500                  * SONY drives do not allow a mode select with a medium_type
3501                  * value that has just been returned by a mode sense; use a
3502                  * medium_type of 0 (Default) instead.
3503                  */
3504                 mode_header->medium_type = 0;
3505         }
3506
3507         /* Don't say we've got more room than we actually allocated */
3508         param_len = min(param_len, data->alloc_len);
3509
3510         scsi_mode_select_len(csio,
3511                              /* retries */ 1,
3512                              /* cbfcnp */ cddone,
3513                              /* tag_action */ MSG_SIMPLE_Q_TAG,
3514                              /* scsi_page_fmt */ 1,
3515                              /* save_pages */ 0,
3516                              /* param_buf */ data->mode_buf,
3517                              /* param_len */ param_len,
3518                              /* minimum_cmd_size */ cdb_size,
3519                              /* sense_len */ SSD_FULL_SIZE,
3520                              /* timeout */ 50000);
3521
3522         /* See comments in cdgetmode() and cd6byteworkaround(). */
3523         STAILQ_INSERT_TAIL(&softc->mode_queue, data, links);
3524
3525         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3526                          /*sense_flags*/SF_RETRY_UA);
3527
3528         xpt_release_ccb(ccb);
3529
3530         STAILQ_REMOVE(&softc->mode_queue, data, cd_mode_params, links);
3531
3532         return (error);
3533 }
3534
3535
3536
3537 static int
3538 cdplay(struct cam_periph *periph, u_int32_t blk, u_int32_t len)
3539 {
3540         struct ccb_scsiio *csio;
3541         union ccb *ccb;
3542         int error;
3543         u_int8_t cdb_len;
3544
3545         error = 0;
3546         ccb = cdgetccb(periph, /* priority */ 1);
3547         csio = &ccb->csio;
3548         /*
3549          * Use the smallest possible command to perform the operation.
3550          */
3551         if ((len & 0xffff0000) == 0) {
3552                 /*
3553                  * We can fit in a 10 byte cdb.
3554                  */
3555                 struct scsi_play_10 *scsi_cmd;
3556
3557                 scsi_cmd = (struct scsi_play_10 *)&csio->cdb_io.cdb_bytes;
3558                 bzero (scsi_cmd, sizeof(*scsi_cmd));
3559                 scsi_cmd->op_code = PLAY_10;
3560                 scsi_ulto4b(blk, (u_int8_t *)scsi_cmd->blk_addr);
3561                 scsi_ulto2b(len, (u_int8_t *)scsi_cmd->xfer_len);
3562                 cdb_len = sizeof(*scsi_cmd);
3563         } else  {
3564                 struct scsi_play_12 *scsi_cmd;
3565
3566                 scsi_cmd = (struct scsi_play_12 *)&csio->cdb_io.cdb_bytes;
3567                 bzero (scsi_cmd, sizeof(*scsi_cmd));
3568                 scsi_cmd->op_code = PLAY_12;
3569                 scsi_ulto4b(blk, (u_int8_t *)scsi_cmd->blk_addr);
3570                 scsi_ulto4b(len, (u_int8_t *)scsi_cmd->xfer_len);
3571                 cdb_len = sizeof(*scsi_cmd);
3572         }
3573         cam_fill_csio(csio,
3574                       /*retries*/2,
3575                       cddone,
3576                       /*flags*/CAM_DIR_NONE,
3577                       MSG_SIMPLE_Q_TAG,
3578                       /*dataptr*/NULL,
3579                       /*datalen*/0,
3580                       /*sense_len*/SSD_FULL_SIZE,
3581                       cdb_len,
3582                       /*timeout*/50 * 1000);
3583
3584         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3585                          /*sense_flags*/SF_RETRY_UA);
3586
3587         xpt_release_ccb(ccb);
3588
3589         return(error);
3590 }
3591
3592 static int
3593 cdplaymsf(struct cam_periph *periph, u_int32_t startm, u_int32_t starts,
3594           u_int32_t startf, u_int32_t endm, u_int32_t ends, u_int32_t endf)
3595 {
3596         struct scsi_play_msf *scsi_cmd;
3597         struct ccb_scsiio *csio;
3598         union ccb *ccb;
3599         int error;
3600
3601         error = 0;
3602
3603         ccb = cdgetccb(periph, /* priority */ 1);
3604
3605         csio = &ccb->csio;
3606
3607         cam_fill_csio(csio,
3608                       /* retries */ 1,
3609                       /* cbfcnp */ cddone,
3610                       /* flags */ CAM_DIR_NONE,
3611                       /* tag_action */ MSG_SIMPLE_Q_TAG,
3612                       /* data_ptr */ NULL,
3613                       /* dxfer_len */ 0,
3614                       /* sense_len */ SSD_FULL_SIZE,
3615                       sizeof(struct scsi_play_msf),
3616                       /* timeout */ 50000);
3617
3618         scsi_cmd = (struct scsi_play_msf *)&csio->cdb_io.cdb_bytes;
3619         bzero (scsi_cmd, sizeof(*scsi_cmd));
3620
3621         scsi_cmd->op_code = PLAY_MSF;
3622         scsi_cmd->start_m = startm;
3623         scsi_cmd->start_s = starts;
3624         scsi_cmd->start_f = startf;
3625         scsi_cmd->end_m = endm;
3626         scsi_cmd->end_s = ends;
3627         scsi_cmd->end_f = endf;
3628
3629         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3630                          /*sense_flags*/SF_RETRY_UA);
3631
3632         xpt_release_ccb(ccb);
3633
3634         return(error);
3635 }
3636
3637
3638 static int
3639 cdplaytracks(struct cam_periph *periph, u_int32_t strack, u_int32_t sindex,
3640              u_int32_t etrack, u_int32_t eindex)
3641 {
3642         struct scsi_play_track *scsi_cmd;
3643         struct ccb_scsiio *csio;
3644         union ccb *ccb;
3645         int error;
3646
3647         error = 0;
3648
3649         ccb = cdgetccb(periph, /* priority */ 1);
3650
3651         csio = &ccb->csio;
3652
3653         cam_fill_csio(csio,
3654                       /* retries */ 1,
3655                       /* cbfcnp */ cddone,
3656                       /* flags */ CAM_DIR_NONE,
3657                       /* tag_action */ MSG_SIMPLE_Q_TAG,
3658                       /* data_ptr */ NULL,
3659                       /* dxfer_len */ 0,
3660                       /* sense_len */ SSD_FULL_SIZE,
3661                       sizeof(struct scsi_play_track),
3662                       /* timeout */ 50000);
3663
3664         scsi_cmd = (struct scsi_play_track *)&csio->cdb_io.cdb_bytes;
3665         bzero (scsi_cmd, sizeof(*scsi_cmd));
3666
3667         scsi_cmd->op_code = PLAY_TRACK;
3668         scsi_cmd->start_track = strack;
3669         scsi_cmd->start_index = sindex;
3670         scsi_cmd->end_track = etrack;
3671         scsi_cmd->end_index = eindex;
3672
3673         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3674                          /*sense_flags*/SF_RETRY_UA);
3675
3676         xpt_release_ccb(ccb);
3677
3678         return(error);
3679 }
3680
3681 static int
3682 cdpause(struct cam_periph *periph, u_int32_t go)
3683 {
3684         struct scsi_pause *scsi_cmd;
3685         struct ccb_scsiio *csio;
3686         union ccb *ccb;
3687         int error;
3688
3689         error = 0;
3690
3691         ccb = cdgetccb(periph, /* priority */ 1);
3692
3693         csio = &ccb->csio;
3694
3695         cam_fill_csio(csio,
3696                       /* retries */ 1,
3697                       /* cbfcnp */ cddone,
3698                       /* flags */ CAM_DIR_NONE,
3699                       /* tag_action */ MSG_SIMPLE_Q_TAG,
3700                       /* data_ptr */ NULL,
3701                       /* dxfer_len */ 0,
3702                       /* sense_len */ SSD_FULL_SIZE,
3703                       sizeof(struct scsi_pause),
3704                       /* timeout */ 50000);
3705
3706         scsi_cmd = (struct scsi_pause *)&csio->cdb_io.cdb_bytes;
3707         bzero (scsi_cmd, sizeof(*scsi_cmd));
3708
3709         scsi_cmd->op_code = PAUSE;
3710         scsi_cmd->resume = go;
3711
3712         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3713                          /*sense_flags*/SF_RETRY_UA);
3714
3715         xpt_release_ccb(ccb);
3716
3717         return(error);
3718 }
3719
3720 static int
3721 cdstartunit(struct cam_periph *periph, int load)
3722 {
3723         union ccb *ccb;
3724         int error;
3725
3726         error = 0;
3727
3728         ccb = cdgetccb(periph, /* priority */ 1);
3729
3730         scsi_start_stop(&ccb->csio,
3731                         /* retries */ 1,
3732                         /* cbfcnp */ cddone,
3733                         /* tag_action */ MSG_SIMPLE_Q_TAG,
3734                         /* start */ TRUE,
3735                         /* load_eject */ load,
3736                         /* immediate */ FALSE,
3737                         /* sense_len */ SSD_FULL_SIZE,
3738                         /* timeout */ 50000);
3739
3740         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3741                          /*sense_flags*/SF_RETRY_UA);
3742
3743         xpt_release_ccb(ccb);
3744
3745         return(error);
3746 }
3747
3748 static int
3749 cdstopunit(struct cam_periph *periph, u_int32_t eject)
3750 {
3751         union ccb *ccb;
3752         int error;
3753
3754         error = 0;
3755
3756         ccb = cdgetccb(periph, /* priority */ 1);
3757
3758         scsi_start_stop(&ccb->csio,
3759                         /* retries */ 1,
3760                         /* cbfcnp */ cddone,
3761                         /* tag_action */ MSG_SIMPLE_Q_TAG,
3762                         /* start */ FALSE,
3763                         /* load_eject */ eject,
3764                         /* immediate */ FALSE,
3765                         /* sense_len */ SSD_FULL_SIZE,
3766                         /* timeout */ 50000);
3767
3768         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3769                          /*sense_flags*/SF_RETRY_UA);
3770
3771         xpt_release_ccb(ccb);
3772
3773         return(error);
3774 }
3775
3776 static int
3777 cdsetspeed(struct cam_periph *periph, u_int32_t rdspeed, u_int32_t wrspeed)
3778 {
3779         struct scsi_set_speed *scsi_cmd;
3780         struct ccb_scsiio *csio;
3781         union ccb *ccb;
3782         int error;
3783
3784         error = 0;
3785         ccb = cdgetccb(periph, /* priority */ 1);
3786         csio = &ccb->csio;
3787
3788         /* Preserve old behavior: units in multiples of CDROM speed */
3789         if (rdspeed < 177)
3790                 rdspeed *= 177;
3791         if (wrspeed < 177)
3792                 wrspeed *= 177;
3793
3794         cam_fill_csio(csio,
3795                       /* retries */ 1,
3796                       /* cbfcnp */ cddone,
3797                       /* flags */ CAM_DIR_NONE,
3798                       /* tag_action */ MSG_SIMPLE_Q_TAG,
3799                       /* data_ptr */ NULL,
3800                       /* dxfer_len */ 0,
3801                       /* sense_len */ SSD_FULL_SIZE,
3802                       sizeof(struct scsi_set_speed),
3803                       /* timeout */ 50000);
3804
3805         scsi_cmd = (struct scsi_set_speed *)&csio->cdb_io.cdb_bytes;
3806         bzero(scsi_cmd, sizeof(*scsi_cmd));
3807
3808         scsi_cmd->opcode = SET_CD_SPEED;
3809         scsi_ulto2b(rdspeed, scsi_cmd->readspeed);
3810         scsi_ulto2b(wrspeed, scsi_cmd->writespeed);
3811
3812         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3813                          /*sense_flags*/SF_RETRY_UA);
3814
3815         xpt_release_ccb(ccb);
3816
3817         return(error);
3818 }
3819
3820 static int
3821 cdreportkey(struct cam_periph *periph, struct dvd_authinfo *authinfo)
3822 {
3823         union ccb *ccb;
3824         u_int8_t *databuf;
3825         u_int32_t lba;
3826         int error;
3827         int length;
3828
3829         error = 0;
3830         databuf = NULL;
3831         lba = 0;
3832
3833         ccb = cdgetccb(periph, /* priority */ 1);
3834
3835         switch (authinfo->format) {
3836         case DVD_REPORT_AGID:
3837                 length = sizeof(struct scsi_report_key_data_agid);
3838                 break;
3839         case DVD_REPORT_CHALLENGE:
3840                 length = sizeof(struct scsi_report_key_data_challenge);
3841                 break;
3842         case DVD_REPORT_KEY1:
3843                 length = sizeof(struct scsi_report_key_data_key1_key2);
3844                 break;
3845         case DVD_REPORT_TITLE_KEY:
3846                 length = sizeof(struct scsi_report_key_data_title);
3847                 /* The lba field is only set for the title key */
3848                 lba = authinfo->lba;
3849                 break;
3850         case DVD_REPORT_ASF:
3851                 length = sizeof(struct scsi_report_key_data_asf);
3852                 break;
3853         case DVD_REPORT_RPC:
3854                 length = sizeof(struct scsi_report_key_data_rpc);
3855                 break;
3856         case DVD_INVALIDATE_AGID:
3857                 length = 0;
3858                 break;
3859         default:
3860                 error = EINVAL;
3861                 goto bailout;
3862                 break; /* NOTREACHED */
3863         }
3864
3865         if (length != 0) {
3866                 databuf = kmalloc(length, M_DEVBUF, M_INTWAIT | M_ZERO);
3867         } else {
3868                 databuf = NULL;
3869         }
3870
3871
3872         scsi_report_key(&ccb->csio,
3873                         /* retries */ 1,
3874                         /* cbfcnp */ cddone,
3875                         /* tag_action */ MSG_SIMPLE_Q_TAG,
3876                         /* lba */ lba,
3877                         /* agid */ authinfo->agid,
3878                         /* key_format */ authinfo->format,
3879                         /* data_ptr */ databuf,
3880                         /* dxfer_len */ length,
3881                         /* sense_len */ SSD_FULL_SIZE,
3882                         /* timeout */ 50000);
3883
3884         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3885                          /*sense_flags*/SF_RETRY_UA);
3886
3887         if (error != 0)
3888                 goto bailout;
3889
3890         if (ccb->csio.resid != 0) {
3891                 xpt_print(periph->path, "warning, residual for report key "
3892                     "command is %d\n", ccb->csio.resid);
3893         }
3894
3895         switch(authinfo->format) {
3896         case DVD_REPORT_AGID: {
3897                 struct scsi_report_key_data_agid *agid_data;
3898
3899                 agid_data = (struct scsi_report_key_data_agid *)databuf;
3900
3901                 authinfo->agid = (agid_data->agid & RKD_AGID_MASK) >>
3902                         RKD_AGID_SHIFT;
3903                 break;
3904         }
3905         case DVD_REPORT_CHALLENGE: {
3906                 struct scsi_report_key_data_challenge *chal_data;
3907
3908                 chal_data = (struct scsi_report_key_data_challenge *)databuf;
3909
3910                 bcopy(chal_data->challenge_key, authinfo->keychal,
3911                       min(sizeof(chal_data->challenge_key),
3912                           sizeof(authinfo->keychal)));
3913                 break;
3914         }
3915         case DVD_REPORT_KEY1: {
3916                 struct scsi_report_key_data_key1_key2 *key1_data;
3917
3918                 key1_data = (struct scsi_report_key_data_key1_key2 *)databuf;
3919
3920                 bcopy(key1_data->key1, authinfo->keychal,
3921                       min(sizeof(key1_data->key1), sizeof(authinfo->keychal)));
3922                 break;
3923         }
3924         case DVD_REPORT_TITLE_KEY: {
3925                 struct scsi_report_key_data_title *title_data;
3926
3927                 title_data = (struct scsi_report_key_data_title *)databuf;
3928
3929                 authinfo->cpm = (title_data->byte0 & RKD_TITLE_CPM) >>
3930                         RKD_TITLE_CPM_SHIFT;
3931                 authinfo->cp_sec = (title_data->byte0 & RKD_TITLE_CP_SEC) >>
3932                         RKD_TITLE_CP_SEC_SHIFT;
3933                 authinfo->cgms = (title_data->byte0 & RKD_TITLE_CMGS_MASK) >>
3934                         RKD_TITLE_CMGS_SHIFT;
3935                 bcopy(title_data->title_key, authinfo->keychal,
3936                       min(sizeof(title_data->title_key),
3937                           sizeof(authinfo->keychal)));
3938                 break;
3939         }
3940         case DVD_REPORT_ASF: {
3941                 struct scsi_report_key_data_asf *asf_data;
3942
3943                 asf_data = (struct scsi_report_key_data_asf *)databuf;
3944
3945                 authinfo->asf = asf_data->success & RKD_ASF_SUCCESS;
3946                 break;
3947         }
3948         case DVD_REPORT_RPC: {
3949                 struct scsi_report_key_data_rpc *rpc_data;
3950
3951                 rpc_data = (struct scsi_report_key_data_rpc *)databuf;
3952
3953                 authinfo->reg_type = (rpc_data->byte4 & RKD_RPC_TYPE_MASK) >>
3954                         RKD_RPC_TYPE_SHIFT;
3955                 authinfo->vend_rsts =
3956                         (rpc_data->byte4 & RKD_RPC_VENDOR_RESET_MASK) >>
3957                         RKD_RPC_VENDOR_RESET_SHIFT;
3958                 authinfo->user_rsts = rpc_data->byte4 & RKD_RPC_USER_RESET_MASK;
3959                 authinfo->region = rpc_data->region_mask;
3960                 authinfo->rpc_scheme = rpc_data->rpc_scheme1;
3961                 break;
3962         }
3963         case DVD_INVALIDATE_AGID:
3964                 break;
3965         default:
3966                 /* This should be impossible, since we checked above */
3967                 error = EINVAL;
3968                 goto bailout;
3969                 break; /* NOTREACHED */
3970         }
3971 bailout:
3972         if (databuf != NULL)
3973                 kfree(databuf, M_DEVBUF);
3974
3975         xpt_release_ccb(ccb);
3976
3977         return(error);
3978 }
3979
3980 static int
3981 cdsendkey(struct cam_periph *periph, struct dvd_authinfo *authinfo)
3982 {
3983         union ccb *ccb;
3984         u_int8_t *databuf;
3985         int length;
3986         int error;
3987
3988         error = 0;
3989         databuf = NULL;
3990
3991         ccb = cdgetccb(periph, /* priority */ 1);
3992
3993         switch(authinfo->format) {
3994         case DVD_SEND_CHALLENGE: {
3995                 struct scsi_report_key_data_challenge *challenge_data;
3996
3997                 length = sizeof(*challenge_data);
3998
3999                 challenge_data = kmalloc(length, M_DEVBUF, M_INTWAIT | M_ZERO);
4000
4001                 databuf = (u_int8_t *)challenge_data;
4002
4003                 scsi_ulto2b(length - sizeof(challenge_data->data_len),
4004                             challenge_data->data_len);
4005
4006                 bcopy(authinfo->keychal, challenge_data->challenge_key,
4007                       min(sizeof(authinfo->keychal),
4008                           sizeof(challenge_data->challenge_key)));
4009                 break;
4010         }
4011         case DVD_SEND_KEY2: {
4012                 struct scsi_report_key_data_key1_key2 *key2_data;
4013
4014                 length = sizeof(*key2_data);
4015
4016                 key2_data = kmalloc(length, M_DEVBUF, M_INTWAIT | M_ZERO);
4017
4018                 databuf = (u_int8_t *)key2_data;
4019
4020                 scsi_ulto2b(length - sizeof(key2_data->data_len),
4021                             key2_data->data_len);
4022
4023                 bcopy(authinfo->keychal, key2_data->key1,
4024                       min(sizeof(authinfo->keychal), sizeof(key2_data->key1)));
4025
4026                 break;
4027         }
4028         case DVD_SEND_RPC: {
4029                 struct scsi_send_key_data_rpc *rpc_data;
4030
4031                 length = sizeof(*rpc_data);
4032
4033                 rpc_data = kmalloc(length, M_DEVBUF, M_INTWAIT | M_ZERO);
4034
4035                 databuf = (u_int8_t *)rpc_data;
4036
4037                 scsi_ulto2b(length - sizeof(rpc_data->data_len),
4038                             rpc_data->data_len);
4039
4040                 rpc_data->region_code = authinfo->region;
4041                 break;
4042         }
4043         default:
4044                 error = EINVAL;
4045                 goto bailout;
4046                 break; /* NOTREACHED */
4047         }
4048
4049         scsi_send_key(&ccb->csio,
4050                       /* retries */ 1,
4051                       /* cbfcnp */ cddone,
4052                       /* tag_action */ MSG_SIMPLE_Q_TAG,
4053                       /* agid */ authinfo->agid,
4054                       /* key_format */ authinfo->format,
4055                       /* data_ptr */ databuf,
4056                       /* dxfer_len */ length,
4057                       /* sense_len */ SSD_FULL_SIZE,
4058                       /* timeout */ 50000);
4059
4060         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
4061                          /*sense_flags*/SF_RETRY_UA);
4062
4063 bailout:
4064
4065         if (databuf != NULL)
4066                 kfree(databuf, M_DEVBUF);
4067
4068         xpt_release_ccb(ccb);
4069
4070         return(error);
4071 }
4072
4073 static int
4074 cdreaddvdstructure(struct cam_periph *periph, struct dvd_struct *dvdstruct)
4075 {
4076         union ccb *ccb;
4077         u_int8_t *databuf;
4078         u_int32_t address;
4079         int error;
4080         int length;
4081
4082         error = 0;
4083         databuf = NULL;
4084         /* The address is reserved for many of the formats */
4085         address = 0;
4086
4087         ccb = cdgetccb(periph, /* priority */ 1);
4088
4089         switch(dvdstruct->format) {
4090         case DVD_STRUCT_PHYSICAL:
4091                 length = sizeof(struct scsi_read_dvd_struct_data_physical);
4092                 break;
4093         case DVD_STRUCT_COPYRIGHT:
4094                 length = sizeof(struct scsi_read_dvd_struct_data_copyright);
4095                 break;
4096         case DVD_STRUCT_DISCKEY:
4097                 length = sizeof(struct scsi_read_dvd_struct_data_disc_key);
4098                 break;
4099         case DVD_STRUCT_BCA:
4100                 length = sizeof(struct scsi_read_dvd_struct_data_bca);
4101                 break;
4102         case DVD_STRUCT_MANUFACT:
4103                 length = sizeof(struct scsi_read_dvd_struct_data_manufacturer);
4104                 break;
4105         case DVD_STRUCT_CMI:
4106                 error = ENODEV;
4107                 goto bailout;
4108 #ifdef notyet
4109                 length = sizeof(struct scsi_read_dvd_struct_data_copy_manage);
4110                 address = dvdstruct->address;
4111 #endif
4112                 break; /* NOTREACHED */
4113         case DVD_STRUCT_PROTDISCID:
4114                 length = sizeof(struct scsi_read_dvd_struct_data_prot_discid);
4115                 break;
4116         case DVD_STRUCT_DISCKEYBLOCK:
4117                 length = sizeof(struct scsi_read_dvd_struct_data_disc_key_blk);
4118                 break;
4119         case DVD_STRUCT_DDS:
4120                 length = sizeof(struct scsi_read_dvd_struct_data_dds);
4121                 break;
4122         case DVD_STRUCT_MEDIUM_STAT:
4123                 length = sizeof(struct scsi_read_dvd_struct_data_medium_status);
4124                 break;
4125         case DVD_STRUCT_SPARE_AREA:
4126                 length = sizeof(struct scsi_read_dvd_struct_data_spare_area);
4127                 break;
4128         case DVD_STRUCT_RMD_LAST:
4129                 error = ENODEV;
4130                 goto bailout;
4131 #ifdef notyet
4132                 length = sizeof(struct scsi_read_dvd_struct_data_rmd_borderout);
4133                 address = dvdstruct->address;
4134 #endif
4135                 break; /* NOTREACHED */
4136         case DVD_STRUCT_RMD_RMA:
4137                 error = ENODEV;
4138                 goto bailout;
4139 #ifdef notyet
4140                 length = sizeof(struct scsi_read_dvd_struct_data_rmd);
4141                 address = dvdstruct->address;
4142 #endif
4143                 break; /* NOTREACHED */
4144         case DVD_STRUCT_PRERECORDED:
4145                 length = sizeof(struct scsi_read_dvd_struct_data_leadin);
4146                 break;
4147         case DVD_STRUCT_UNIQUEID:
4148                 length = sizeof(struct scsi_read_dvd_struct_data_disc_id);
4149                 break;
4150         case DVD_STRUCT_DCB:
4151                 error = ENODEV;
4152                 goto bailout;
4153 #ifdef notyet
4154                 length = sizeof(struct scsi_read_dvd_struct_data_dcb);
4155                 address = dvdstruct->address;
4156 #endif
4157                 break; /* NOTREACHED */
4158         case DVD_STRUCT_LIST:
4159                 /*
4160                  * This is the maximum allocation length for the READ DVD
4161                  * STRUCTURE command.  There's nothing in the MMC3 spec
4162                  * that indicates a limit in the amount of data that can
4163                  * be returned from this call, other than the limits
4164                  * imposed by the 2-byte length variables.
4165                  */
4166                 length = 65535;
4167                 break;
4168         default:
4169                 error = EINVAL;
4170                 goto bailout;
4171                 break; /* NOTREACHED */
4172         }
4173
4174         if (length != 0) {
4175                 databuf = kmalloc(length, M_DEVBUF, M_INTWAIT | M_ZERO);
4176         } else {
4177                 databuf = NULL;
4178         }
4179
4180         scsi_read_dvd_structure(&ccb->csio,
4181                                 /* retries */ 1,
4182                                 /* cbfcnp */ cddone,
4183                                 /* tag_action */ MSG_SIMPLE_Q_TAG,
4184                                 /* lba */ address,
4185                                 /* layer_number */ dvdstruct->layer_num,
4186                                 /* key_format */ dvdstruct->format,
4187                                 /* agid */ dvdstruct->agid,
4188                                 /* data_ptr */ databuf,
4189                                 /* dxfer_len */ length,
4190                                 /* sense_len */ SSD_FULL_SIZE,
4191                                 /* timeout */ 50000);
4192
4193         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
4194                          /*sense_flags*/SF_RETRY_UA);
4195
4196         if (error != 0)
4197                 goto bailout;
4198
4199         switch(dvdstruct->format) {
4200         case DVD_STRUCT_PHYSICAL: {
4201                 struct scsi_read_dvd_struct_data_layer_desc *inlayer;
4202                 struct dvd_layer *outlayer;
4203                 struct scsi_read_dvd_struct_data_physical *phys_data;
4204
4205                 phys_data =
4206                         (struct scsi_read_dvd_struct_data_physical *)databuf;
4207                 inlayer = &phys_data->layer_desc;
4208                 outlayer = (struct dvd_layer *)&dvdstruct->data;
4209
4210                 dvdstruct->length = sizeof(*inlayer);
4211
4212                 outlayer->book_type = (inlayer->book_type_version &
4213                         RDSD_BOOK_TYPE_MASK) >> RDSD_BOOK_TYPE_SHIFT;
4214                 outlayer->book_version = (inlayer->book_type_version &
4215                         RDSD_BOOK_VERSION_MASK);
4216                 outlayer->disc_size = (inlayer->disc_size_max_rate &
4217                         RDSD_DISC_SIZE_MASK) >> RDSD_DISC_SIZE_SHIFT;
4218                 outlayer->max_rate = (inlayer->disc_size_max_rate &
4219                         RDSD_MAX_RATE_MASK);
4220                 outlayer->nlayers = (inlayer->layer_info &
4221                         RDSD_NUM_LAYERS_MASK) >> RDSD_NUM_LAYERS_SHIFT;
4222                 outlayer->track_path = (inlayer->layer_info &
4223                         RDSD_TRACK_PATH_MASK) >> RDSD_TRACK_PATH_SHIFT;
4224                 outlayer->layer_type = (inlayer->layer_info &
4225                         RDSD_LAYER_TYPE_MASK);
4226                 outlayer->linear_density = (inlayer->density &
4227                         RDSD_LIN_DENSITY_MASK) >> RDSD_LIN_DENSITY_SHIFT;
4228                 outlayer->track_density = (inlayer->density &
4229                         RDSD_TRACK_DENSITY_MASK);
4230                 outlayer->bca = (inlayer->bca & RDSD_BCA_MASK) >>
4231                         RDSD_BCA_SHIFT;
4232                 outlayer->start_sector = scsi_3btoul(inlayer->main_data_start);
4233                 outlayer->end_sector = scsi_3btoul(inlayer->main_data_end);
4234                 outlayer->end_sector_l0 =
4235                         scsi_3btoul(inlayer->end_sector_layer0);
4236                 break;
4237         }
4238         case DVD_STRUCT_COPYRIGHT: {
4239                 struct scsi_read_dvd_struct_data_copyright *copy_data;
4240
4241                 copy_data = (struct scsi_read_dvd_struct_data_copyright *)
4242                         databuf;
4243
4244                 dvdstruct->cpst = copy_data->cps_type;
4245                 dvdstruct->rmi = copy_data->region_info;
4246                 dvdstruct->length = 0;
4247
4248                 break;
4249         }
4250         default:
4251                 /*
4252                  * Tell the user what the overall length is, no matter
4253                  * what we can actually fit in the data buffer.
4254                  */
4255                 dvdstruct->length = length - ccb->csio.resid -
4256                         sizeof(struct scsi_read_dvd_struct_data_header);
4257
4258                 /*
4259                  * But only actually copy out the smaller of what we read
4260                  * in or what the structure can take.
4261                  */
4262                 bcopy(databuf + sizeof(struct scsi_read_dvd_struct_data_header),
4263                       dvdstruct->data,
4264                       min(sizeof(dvdstruct->data), dvdstruct->length));
4265                 break;
4266         }
4267 bailout:
4268
4269         if (databuf != NULL)
4270                 kfree(databuf, M_DEVBUF);
4271
4272         xpt_release_ccb(ccb);
4273
4274         return(error);
4275 }
4276
4277 void
4278 scsi_report_key(struct ccb_scsiio *csio, u_int32_t retries,
4279                 void (*cbfcnp)(struct cam_periph *, union ccb *),
4280                 u_int8_t tag_action, u_int32_t lba, u_int8_t agid,
4281                 u_int8_t key_format, u_int8_t *data_ptr, u_int32_t dxfer_len,
4282                 u_int8_t sense_len, u_int32_t timeout)
4283 {
4284         struct scsi_report_key *scsi_cmd;
4285
4286         scsi_cmd = (struct scsi_report_key *)&csio->cdb_io.cdb_bytes;
4287         bzero(scsi_cmd, sizeof(*scsi_cmd));
4288         scsi_cmd->opcode = REPORT_KEY;
4289         scsi_ulto4b(lba, scsi_cmd->lba);
4290         scsi_ulto2b(dxfer_len, scsi_cmd->alloc_len);
4291         scsi_cmd->agid_keyformat = (agid << RK_KF_AGID_SHIFT) |
4292                 (key_format & RK_KF_KEYFORMAT_MASK);
4293
4294         cam_fill_csio(csio,
4295                       retries,
4296                       cbfcnp,
4297                       /*flags*/ (dxfer_len == 0) ? CAM_DIR_NONE : CAM_DIR_IN,
4298                       tag_action,
4299                       /*data_ptr*/ data_ptr,
4300                       /*dxfer_len*/ dxfer_len,
4301                       sense_len,
4302                       sizeof(*scsi_cmd),
4303                       timeout);
4304 }
4305
4306 void
4307 scsi_send_key(struct ccb_scsiio *csio, u_int32_t retries,
4308               void (*cbfcnp)(struct cam_periph *, union ccb *),
4309               u_int8_t tag_action, u_int8_t agid, u_int8_t key_format,
4310               u_int8_t *data_ptr, u_int32_t dxfer_len, u_int8_t sense_len,
4311               u_int32_t timeout)
4312 {
4313         struct scsi_send_key *scsi_cmd;
4314
4315         scsi_cmd = (struct scsi_send_key *)&csio->cdb_io.cdb_bytes;
4316         bzero(scsi_cmd, sizeof(*scsi_cmd));
4317         scsi_cmd->opcode = SEND_KEY;
4318
4319         scsi_ulto2b(dxfer_len, scsi_cmd->param_len);
4320         scsi_cmd->agid_keyformat = (agid << RK_KF_AGID_SHIFT) |
4321                 (key_format & RK_KF_KEYFORMAT_MASK);
4322
4323         cam_fill_csio(csio,
4324                       retries,
4325                       cbfcnp,
4326                       /*flags*/ CAM_DIR_OUT,
4327                       tag_action,
4328                       /*data_ptr*/ data_ptr,
4329                       /*dxfer_len*/ dxfer_len,
4330                       sense_len,
4331                       sizeof(*scsi_cmd),
4332                       timeout);
4333 }
4334
4335
4336 void
4337 scsi_read_dvd_structure(struct ccb_scsiio *csio, u_int32_t retries,
4338                         void (*cbfcnp)(struct cam_periph *, union ccb *),
4339                         u_int8_t tag_action, u_int32_t address,
4340                         u_int8_t layer_number, u_int8_t format, u_int8_t agid,
4341                         u_int8_t *data_ptr, u_int32_t dxfer_len,
4342                         u_int8_t sense_len, u_int32_t timeout)
4343 {
4344         struct scsi_read_dvd_structure *scsi_cmd;
4345
4346         scsi_cmd = (struct scsi_read_dvd_structure *)&csio->cdb_io.cdb_bytes;
4347         bzero(scsi_cmd, sizeof(*scsi_cmd));
4348         scsi_cmd->opcode = READ_DVD_STRUCTURE;
4349
4350         scsi_ulto4b(address, scsi_cmd->address);
4351         scsi_cmd->layer_number = layer_number;
4352         scsi_cmd->format = format;
4353         scsi_ulto2b(dxfer_len, scsi_cmd->alloc_len);
4354         /* The AGID is the top two bits of this byte */
4355         scsi_cmd->agid = agid << 6;
4356
4357         cam_fill_csio(csio,
4358                       retries,
4359                       cbfcnp,
4360                       /*flags*/ CAM_DIR_IN,
4361                       tag_action,
4362                       /*data_ptr*/ data_ptr,
4363                       /*dxfer_len*/ dxfer_len,
4364                       sense_len,
4365                       sizeof(*scsi_cmd),
4366                       timeout);
4367 }