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), "CAM CD unit %d", periph->unit_number);
 598         ksnprintf(tmpstr2, sizeof(tmpstr2), "%d", periph->unit_number);
 599
 600         sysctl_ctx_init(&softc->sysctl_ctx);
 601         softc->flags |= CD_FLAG_SCTX_INIT;
 602         softc->sysctl_tree = SYSCTL_ADD_NODE(&softc->sysctl_ctx,
 603         SYSCTL_STATIC_CHILDREN(_kern_cam_cd), OID_AUTO,
 604         tmpstr2, CTLFLAG_RD, 0, tmpstr);
 605
 606         if (softc->sysctl_tree == NULL) {
 607                 kprintf("cdsysctlinit: unable to allocate sysctl tree\n");
 608                 cam_periph_release(periph);
 609                 rel_mplock();
 610                 return;
 611         }
 612
 613         /*
 614          * Now register the sysctl handler, so the user can the value on
 615          * the fly.
 616          */
 617         SYSCTL_ADD_PROC(&softc->sysctl_ctx,SYSCTL_CHILDREN(softc->sysctl_tree),
 618                         OID_AUTO, "minimum_cmd_size", CTLTYPE_INT | CTLFLAG_RW,
 619                         &softc->minimum_command_size, 0, cdcmdsizesysctl, "I",
 620                         "Minimum CDB size");
 621
 622         cam_periph_release(periph);
 623         rel_mplock();
 624 }
 625
 626 /*
 627  * We have a handler function for this so we can check the values when the
 628  * user sets them, instead of every time we look at them.
 629  */
 630 static int
 631 cdcmdsizesysctl(SYSCTL_HANDLER_ARGS)
 632 {
 633         int error, value;
 634
 635         value = *(int *)arg1;
 636
 637         error = sysctl_handle_int(oidp, &value, 0, req);
 638
 639         if ((error != 0) || (req->newptr == NULL))
 640                 return (error);
 641
 642         /*
 643          * The only real values we can have here are 6 or 10.  I don't
 644          * really forsee having 12 be an option at any time in the future.
 645          * So if the user sets something less than or equal to 6, we'll set
 646          * it to 6.  If he sets something greater than 6, we'll set it to 10.
 647          *
 648          * I suppose we could just return an error here for the wrong values,
 649          * but I don't think it's necessary to do so, as long as we can
 650          * determine the user's intent without too much trouble.
 651          */
 652         if (value < 6)
 653                 value = 6;
 654         else if (value > 6)
 655                 value = 10;
 656
 657         *(int *)arg1 = value;
 658
 659         return (0);
 660 }
 661
 662
 663 static cam_status
 664 cdregister(struct cam_periph *periph, void *arg)
 665 {
 666         struct cd_softc *softc;
 667         struct ccb_pathinq cpi;
 668         struct ccb_getdev *cgd;
 669         char tmpstr[80];
 670         caddr_t match;
 671
 672         cgd = (struct ccb_getdev *)arg;
 673         if (periph == NULL) {
 674                 kprintf("cdregister: periph was NULL!!\n");
 675                 return(CAM_REQ_CMP_ERR);
 676         }
 677         if (cgd == NULL) {
 678                 kprintf("cdregister: no getdev CCB, can't register device\n");
 679                 return(CAM_REQ_CMP_ERR);
 680         }
 681
 682         softc = kmalloc(sizeof(*softc), M_DEVBUF, M_INTWAIT | M_ZERO);
 683         LIST_INIT(&softc->pending_ccbs);
 684         STAILQ_INIT(&softc->mode_queue);
 685         softc->state = CD_STATE_PROBE;
 686         bioq_init(&softc->bio_queue);
 687         if (SID_IS_REMOVABLE(&cgd->inq_data))
 688                 softc->flags |= CD_FLAG_DISC_REMOVABLE;
 689         if ((cgd->inq_data.flags & SID_CmdQue) != 0)
 690                 softc->flags |= CD_FLAG_TAGGED_QUEUING;
 691
 692         periph->softc = softc;
 693         softc->periph = periph;
 694
 695         cam_extend_set(cdperiphs, periph->unit_number, periph);
 696
 697         /*
 698          * See if this device has any quirks.
 699          */
 700         match = cam_quirkmatch((caddr_t)&cgd->inq_data,
 701                                (caddr_t)cd_quirk_table,
 702                                NELEM(cd_quirk_table),
 703                                sizeof(*cd_quirk_table), scsi_inquiry_match);
 704
 705         if (match != NULL)
 706                 softc->quirks = ((struct cd_quirk_entry *)match)->quirks;
 707         else
 708                 softc->quirks = CD_Q_NONE;
 709
 710         /* Check if the SIM does not want 6 byte commands */
 711         xpt_setup_ccb(&cpi.ccb_h, periph->path, /*priority*/1);
 712         cpi.ccb_h.func_code = XPT_PATH_INQ;
 713         xpt_action((union ccb *)&cpi);
 714         if (cpi.ccb_h.status == CAM_REQ_CMP && (cpi.hba_misc & PIM_NO_6_BYTE))
 715                 softc->quirks |= CD_Q_10_BYTE_ONLY;
 716
 717         TASK_INIT(&softc->sysctl_task, 0, cdsysctlinit, periph);
 718
 719         /* The default is 6 byte commands, unless quirked otherwise */
 720         if (softc->quirks & CD_Q_10_BYTE_ONLY)
 721                 softc->minimum_command_size = 10;
 722         else
 723                 softc->minimum_command_size = 6;
 724
 725         /*
 726          * Load the user's default, if any.
 727          */
 728         ksnprintf(tmpstr, sizeof(tmpstr), "kern.cam.cd.%d.minimum_cmd_size",
 729                 periph->unit_number);
 730         TUNABLE_INT_FETCH(tmpstr, &softc->minimum_command_size);
 731
 732         /* 6 and 10 are the only permissible values here. */
 733         if (softc->minimum_command_size < 6)
 734                 softc->minimum_command_size = 6;
 735         else if (softc->minimum_command_size > 6)
 736                 softc->minimum_command_size = 10;
 737
 738         /*
 739          * We need to register the statistics structure for this device,
 740          * but we don't have the blocksize yet for it.  So, we register
 741          * the structure and indicate that we don't have the blocksize
 742          * yet.  Unlike other SCSI peripheral drivers, we explicitly set
 743          * the device type here to be CDROM, rather than just ORing in
 744          * the device type.  This is because this driver can attach to either
 745          * CDROM or WORM devices, and we want this peripheral driver to
 746          * show up in the devstat list as a CD peripheral driver, not a
 747          * WORM peripheral driver.  WORM drives will also have the WORM
 748          * driver attached to them.
 749          */
 750         cam_periph_unlock(periph);
 751         devstat_add_entry(&softc->device_stats, "cd",
 752                           periph->unit_number, 0,
 753                           DEVSTAT_BS_UNAVAILABLE,
 754                           DEVSTAT_TYPE_CDROM | DEVSTAT_TYPE_IF_SCSI,
 755                           DEVSTAT_PRIORITY_CD);
 756         disk_create(periph->unit_number, &softc->disk, &cd_ops);
 757         disk_setdisktype(&softc->disk, "optical");
 758         softc->disk.d_rawdev->si_iosize_max = MAXPHYS;
 759         softc->disk.d_info.d_dsflags = DSO_ONESLICE | DSO_COMPATLABEL |
 760                                         DSO_COMPATPARTA;
 761         cam_periph_lock(periph);
 762
 763         /*
 764          * Add an async callback so that we get
 765          * notified if this device goes away.
 766          */
 767         xpt_register_async(AC_SENT_BDR | AC_BUS_RESET | AC_LOST_DEVICE,
 768                            cdasync, periph, periph->path);
 769
 770         /*
 771          * If the target lun is greater than 0, we most likely have a CD
 772          * changer device.  Check the quirk entries as well, though, just
 773          * in case someone has a CD tower with one lun per drive or
 774          * something like that.  Also, if we know up front that a
 775          * particular device is a changer, we can mark it as such starting
 776          * with lun 0, instead of lun 1.  It shouldn't be necessary to have
 777          * a quirk entry to define something as a changer, however.
 778          */
 779         if (((cgd->ccb_h.target_lun > 0)
 780           && ((softc->quirks & CD_Q_NO_CHANGER) == 0))
 781          || ((softc->quirks & CD_Q_CHANGER) != 0)) {
 782                 struct cdchanger *nchanger;
 783                 struct cam_periph *nperiph;
 784                 struct cam_path *path;
 785                 cam_status status;
 786                 int found;
 787
 788                 /* Set the changer flag in the current device's softc */
 789                 softc->flags |= CD_FLAG_CHANGER;
 790
 791                 /*
 792                  * Now, look around for an existing changer device with the
 793                  * same path and target ID as the current device.
 794                  */
 795                 lockmgr(&changerq_lock, LK_EXCLUSIVE);
 796                 for (found = 0,
 797                      nchanger = (struct cdchanger *)STAILQ_FIRST(&changerq);
 798                      nchanger != NULL;
 799                      nchanger = STAILQ_NEXT(nchanger, changer_links)){
 800                         if ((nchanger->path_id == cgd->ccb_h.path_id)
 801                          && (nchanger->target_id == cgd->ccb_h.target_id)) {
 802                                 found = 1;
 803                                 break;
 804                         }
 805                 }
 806                 lockmgr(&changerq_lock, LK_RELEASE);
 807
 808                 /*
 809                  * If we found a matching entry, just add this device to
 810                  * the list of devices on this changer.
 811                  */
 812                 if (found == 1) {
 813                         struct chdevlist *chlunhead;
 814
 815                         chlunhead = &nchanger->chluns;
 816
 817                         /*
 818                          * XXX KDM look at consolidating this code with the
 819                          * code below in a separate function.
 820                          */
 821
 822                         /*
 823                          * Create a path with lun id 0, and see if we can
 824                          * find a matching device
 825                          */
 826                         status = xpt_create_path(&path, /*periph*/ periph,
 827                                                  cgd->ccb_h.path_id,
 828                                                  cgd->ccb_h.target_id, 0);
 829
 830                         if ((status == CAM_REQ_CMP)
 831                          && ((nperiph = cam_periph_find(path, "cd")) != NULL)){
 832                                 struct cd_softc *nsoftc;
 833
 834                                 nsoftc = (struct cd_softc *)nperiph->softc;
 835
 836                                 if ((nsoftc->flags & CD_FLAG_CHANGER) == 0){
 837                                         nsoftc->flags |= CD_FLAG_CHANGER;
 838                                         nchanger->num_devices++;
 839                                         if (camq_resize(&nchanger->devq,
 840                                            nchanger->num_devices)!=CAM_REQ_CMP){
 841                                                 kprintf("cdregister: "
 842                                                        "camq_resize "
 843                                                        "failed, changer "
 844                                                        "support may "
 845                                                        "be messed up\n");
 846                                         }
 847                                         nsoftc->changer = nchanger;
 848                                         nsoftc->pinfo.index =CAM_UNQUEUED_INDEX;
 849
 850                                         STAILQ_INSERT_TAIL(&nchanger->chluns,
 851                                                           nsoftc,changer_links);
 852                                 }
 853                                 xpt_free_path(path);
 854                         } else if (status == CAM_REQ_CMP)
 855                                 xpt_free_path(path);
 856                         else {
 857                                 kprintf("cdregister: unable to allocate path\n"
 858                                        "cdregister: changer support may be "
 859                                        "broken\n");
 860                         }
 861
 862                         nchanger->num_devices++;
 863
 864                         softc->changer = nchanger;
 865                         softc->pinfo.index = CAM_UNQUEUED_INDEX;
 866
 867                         if (camq_resize(&nchanger->devq,
 868                             nchanger->num_devices) != CAM_REQ_CMP) {
 869                                 kprintf("cdregister: camq_resize "
 870                                        "failed, changer support may "
 871                                        "be messed up\n");
 872                         }
 873
 874                         STAILQ_INSERT_TAIL(chlunhead, softc, changer_links);
 875                 }
 876                 /*
 877                  * In this case, we don't already have an entry for this
 878                  * particular changer, so we need to create one, add it to
 879                  * the queue, and queue this device on the list for this
 880                  * changer.  Before we queue this device, however, we need
 881                  * to search for lun id 0 on this target, and add it to the
 882                  * queue first, if it exists.  (and if it hasn't already
 883                  * been marked as part of the changer.)
 884                  */
 885                 else {
 886                         nchanger = kmalloc(sizeof(struct cdchanger),
 887                                         M_DEVBUF, M_INTWAIT | M_ZERO);
 888                         callout_init(&nchanger->short_handle);
 889                         callout_init(&nchanger->long_handle);
 890                         if (camq_init(&nchanger->devq, 1) != 0) {
 891                                 softc->flags &= ~CD_FLAG_CHANGER;
 892                                 kprintf("cdregister: changer support "
 893                                        "disabled\n");
 894                                 goto cdregisterexit;
 895                         }
 896
 897                         nchanger->path_id = cgd->ccb_h.path_id;
 898                         nchanger->target_id = cgd->ccb_h.target_id;
 899
 900                         /* this is superfluous, but it makes things clearer */
 901                         nchanger->num_devices = 0;
 902
 903                         STAILQ_INIT(&nchanger->chluns);
 904
 905                         callout_init(&nchanger->long_handle);
 906                         callout_init(&nchanger->short_handle);
 907
 908                         lockmgr(&changerq_lock, LK_EXCLUSIVE);
 909                         num_changers++;
 910                         STAILQ_INSERT_TAIL(&changerq, nchanger,
 911                                            changer_links);
 912                         lockmgr(&changerq_lock, LK_RELEASE);
 913
 914                         /*
 915                          * Create a path with lun id 0, and see if we can
 916                          * find a matching device
 917                          */
 918                         status = xpt_create_path(&path, /*periph*/ periph,
 919                                                  cgd->ccb_h.path_id,
 920                                                  cgd->ccb_h.target_id, 0);
 921
 922                         /*
 923                          * If we were able to allocate the path, and if we
 924                          * find a matching device and it isn't already
 925                          * marked as part of a changer, then we add it to
 926                          * the current changer.
 927                          */
 928                         if ((status == CAM_REQ_CMP)
 929                          && ((nperiph = cam_periph_find(path, "cd")) != NULL)
 930                          && ((((struct cd_softc *)periph->softc)->flags &
 931                                CD_FLAG_CHANGER) == 0)) {
 932                                 struct cd_softc *nsoftc;
 933
 934                                 nsoftc = (struct cd_softc *)nperiph->softc;
 935
 936                                 nsoftc->flags |= CD_FLAG_CHANGER;
 937                                 nchanger->num_devices++;
 938                                 if (camq_resize(&nchanger->devq,
 939                                     nchanger->num_devices) != CAM_REQ_CMP) {
 940                                         kprintf("cdregister: camq_resize "
 941                                                "failed, changer support may "
 942                                                "be messed up\n");
 943                                 }
 944                                 nsoftc->changer = nchanger;
 945                                 nsoftc->pinfo.index = CAM_UNQUEUED_INDEX;
 946
 947                                 STAILQ_INSERT_TAIL(&nchanger->chluns,
 948                                                    nsoftc, changer_links);
 949                                 xpt_free_path(path);
 950                         } else if (status == CAM_REQ_CMP)
 951                                 xpt_free_path(path);
 952                         else {
 953                                 kprintf("cdregister: unable to allocate path\n"
 954                                        "cdregister: changer support may be "
 955                                        "broken\n");
 956                         }
 957
 958                         softc->changer = nchanger;
 959                         softc->pinfo.index = CAM_UNQUEUED_INDEX;
 960                         nchanger->num_devices++;
 961                         if (camq_resize(&nchanger->devq,
 962                             nchanger->num_devices) != CAM_REQ_CMP) {
 963                                 kprintf("cdregister: camq_resize "
 964                                        "failed, changer support may "
 965                                        "be messed up\n");
 966                         }
 967                         STAILQ_INSERT_TAIL(&nchanger->chluns, softc,
 968                                            changer_links);
 969                 }
 970         }
 971
 972 cdregisterexit:
 973
 974         /*
 975          * Refcount and block open attempts until we are setup
 976          * Can't block
 977          */
 978         cam_periph_hold(periph, 0);
 979
 980         if ((softc->flags & CD_FLAG_CHANGER) == 0)
 981                 xpt_schedule(periph, /*priority*/5);
 982         else
 983                 cdschedule(periph, /*priority*/ 5);
 984
 985         return(CAM_REQ_CMP);
 986 }
 987
 988 static int
 989 cdopen(struct dev_open_args *ap)
 990 {
 991         cdev_t dev = ap->a_head.a_dev;
 992         struct cam_periph *periph;
 993         struct cd_softc *softc;
 994         int unit, error;
 995
 996         unit = dkunit(dev);
 997         periph = cam_extend_get(cdperiphs, unit);
 998
 999         if (periph == NULL)
1000                 return (ENXIO);
1001
1002         softc = (struct cd_softc *)periph->softc;
1003
1004         if (cam_periph_acquire(periph) != CAM_REQ_CMP)
1005                 return(ENXIO);
1006
1007         cam_periph_lock(periph);
1008
1009         if (softc->flags & CD_FLAG_INVALID) {
1010                 cam_periph_unlock(periph);
1011                 cam_periph_release(periph);
1012                 return(ENXIO);
1013         }
1014
1015         if ((error = cam_periph_hold(periph, PCATCH)) != 0) {
1016                 cam_periph_unlock(periph);
1017                 cam_periph_release(periph);
1018                 return (error);
1019         }
1020
1021         /* Closes aren't symmetrical with opens, so fix up the refcounting. */
1022         if (softc->flags & CD_FLAG_OPEN)
1023                 cam_periph_release(periph);
1024         else
1025                 softc->flags |= CD_FLAG_OPEN;
1026
1027         /*
1028          * Check for media, and set the appropriate flags.  We don't bail
1029          * if we don't have media, but then we don't allow anything but the
1030          * CDIOCEJECT/CDIOCCLOSE ioctls if there is no media.
1031          *
1032          * XXX KDM for now, we do fail the open if we don't have media.  We
1033          * can change this once we've figured out how to make the slice
1034          * code work well with media changing underneath it.
1035          */
1036         error = cdcheckmedia(periph);
1037
1038         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("leaving cdopen\n"));
1039         cam_periph_unhold(periph, 1);
1040         /* stays acquired */
1041
1042         return (0);
1043 }
1044
1045 static int
1046 cdclose(struct dev_close_args *ap)
1047 {
1048         cdev_t dev = ap->a_head.a_dev;
1049         struct  cam_periph *periph;
1050         struct  cd_softc *softc;
1051         struct  disk_info *info;
1052         int     unit;
1053
1054         unit = dkunit(dev);
1055         periph = cam_extend_get(cdperiphs, unit);
1056         if (periph == NULL)
1057                 return (ENXIO);
1058
1059         softc = (struct cd_softc *)periph->softc;
1060
1061         cam_periph_lock(periph);
1062         cam_periph_hold(periph, 0);
1063
1064         if ((softc->flags & CD_FLAG_DISC_REMOVABLE) != 0)
1065                 cdprevent(periph, PR_ALLOW);
1066
1067         /*
1068          * Unconditionally set the dsopen() flags back to their default
1069          * state.
1070          */
1071         info = &softc->disk.d_info;
1072         info->d_dsflags &= ~DSO_NOLABELS;
1073         info->d_dsflags |= DSO_COMPATLABEL;
1074
1075         /*
1076          * Since we're closing this CD, mark the blocksize as unavailable.
1077          * It will be marked as available when the CD is opened again.
1078          */
1079         softc->device_stats.flags |= DEVSTAT_BS_UNAVAILABLE;
1080
1081         /*
1082          * We'll check the media and toc again at the next open().
1083          */
1084         softc->flags &= ~(CD_FLAG_VALID_MEDIA|CD_FLAG_VALID_TOC|CD_FLAG_OPEN);
1085
1086         cam_periph_unhold(periph, 1);
1087         cam_periph_release(periph);
1088
1089         return (0);
1090 }
1091
1092 static void
1093 cdshorttimeout(void *arg)
1094 {
1095         struct cdchanger *changer;
1096
1097         changer = (struct cdchanger *)arg;
1098
1099         /* Always clear the short timeout flag, since that's what we're in */
1100         changer->flags &= ~CHANGER_SHORT_TMOUT_SCHED;
1101
1102         /*
1103          * Check to see if there is any more pending or outstanding I/O for
1104          * this device.  If not, move it out of the active slot.
1105          */
1106         if ((bioq_first(&changer->cur_device->bio_queue) == NULL)
1107          && (changer->cur_device->outstanding_cmds == 0)) {
1108                 changer->flags |= CHANGER_MANUAL_CALL;
1109                 cdrunchangerqueue(changer);
1110         }
1111 }
1112
1113 /*
1114  * This is a wrapper for xpt_schedule.  It only applies to changers.
1115  */
1116 static void
1117 cdschedule(struct cam_periph *periph, int priority)
1118 {
1119         struct cd_softc *softc;
1120
1121         softc = (struct cd_softc *)periph->softc;
1122
1123         /*
1124          * If this device isn't currently queued, and if it isn't
1125          * the active device, then we queue this device and run the
1126          * changer queue if there is no timeout scheduled to do it.
1127          * If this device is the active device, just schedule it
1128          * to run again.  If this device is queued, there should be
1129          * a timeout in place already that will make sure it runs.
1130          */
1131         if ((softc->pinfo.index == CAM_UNQUEUED_INDEX)
1132          && ((softc->flags & CD_FLAG_ACTIVE) == 0)) {
1133                 /*
1134                  * We don't do anything with the priority here.
1135                  * This is strictly a fifo queue.
1136                  */
1137                 softc->pinfo.priority = 1;
1138                 softc->pinfo.generation = ++softc->changer->devq.generation;
1139                 camq_insert(&softc->changer->devq, (cam_pinfo *)softc);
1140
1141                 /*
1142                  * Since we just put a device in the changer queue,
1143                  * check and see if there is a timeout scheduled for
1144                  * this changer.  If so, let the timeout handle
1145                  * switching this device into the active slot.  If
1146                  * not, manually call the timeout routine to
1147                  * bootstrap things.
1148                  */
1149                 if (((softc->changer->flags & CHANGER_TIMEOUT_SCHED)==0)
1150                  && ((softc->changer->flags & CHANGER_NEED_TIMEOUT)==0)
1151                  && ((softc->changer->flags & CHANGER_SHORT_TMOUT_SCHED)==0)){
1152                         softc->changer->flags |= CHANGER_MANUAL_CALL;
1153                         cdrunchangerqueue(softc->changer);
1154                 }
1155         } else if ((softc->flags & CD_FLAG_ACTIVE)
1156                 && ((softc->flags & CD_FLAG_SCHED_ON_COMP) == 0)) {
1157                 xpt_schedule(periph, priority);
1158         }
1159 }
1160
1161 static void
1162 cdrunchangerqueue(void *arg)
1163 {
1164         struct cd_softc *softc;
1165         struct cdchanger *changer;
1166         int called_from_timeout;
1167
1168         changer = (struct cdchanger *)arg;
1169
1170         /*
1171          * If we have NOT been called from cdstrategy() or cddone(), and
1172          * instead from a timeout routine, go ahead and clear the
1173          * timeout flag.
1174          */
1175         if ((changer->flags & CHANGER_MANUAL_CALL) == 0) {
1176                 changer->flags &= ~CHANGER_TIMEOUT_SCHED;
1177                 called_from_timeout = 1;
1178         } else
1179                 called_from_timeout = 0;
1180
1181         /* Always clear the manual call flag */
1182         changer->flags &= ~CHANGER_MANUAL_CALL;
1183
1184         /* nothing to do if the queue is empty */
1185         if (changer->devq.entries <= 0) {
1186                 return;
1187         }
1188
1189         /*
1190          * If the changer queue is frozen, that means we have an active
1191          * device.
1192          */
1193         if (changer->devq.qfrozen_cnt > 0) {
1194
1195                 /*
1196                  * We always need to reset the frozen count and clear the
1197                  * active flag.
1198                  */
1199                 changer->devq.qfrozen_cnt--;
1200                 changer->cur_device->flags &= ~CD_FLAG_ACTIVE;
1201                 changer->cur_device->flags &= ~CD_FLAG_SCHED_ON_COMP;
1202
1203                 if (changer->cur_device->outstanding_cmds > 0) {
1204                         changer->cur_device->flags |= CD_FLAG_SCHED_ON_COMP;
1205                         changer->cur_device->bufs_left =
1206                                 changer->cur_device->outstanding_cmds;
1207                         if (called_from_timeout) {
1208                                 callout_reset(&changer->long_handle,
1209                                         changer_max_busy_seconds * hz,
1210                                         cdrunchangerqueue, changer);
1211                                 changer->flags |= CHANGER_TIMEOUT_SCHED;
1212                         }
1213                         return;
1214                 }
1215
1216                 /*
1217                  * Check to see whether the current device has any I/O left
1218                  * to do.  If so, requeue it at the end of the queue.  If
1219                  * not, there is no need to requeue it.
1220                  */
1221                 if (bioq_first(&changer->cur_device->bio_queue) != NULL) {
1222
1223                         changer->cur_device->pinfo.generation =
1224                                 ++changer->devq.generation;
1225                         camq_insert(&changer->devq,
1226                                 (cam_pinfo *)changer->cur_device);
1227                 }
1228         }
1229
1230         softc = (struct cd_softc *)camq_remove(&changer->devq, CAMQ_HEAD);
1231
1232         changer->cur_device = softc;
1233
1234         changer->devq.qfrozen_cnt++;
1235         softc->flags |= CD_FLAG_ACTIVE;
1236
1237         /* Just in case this device is waiting */
1238         wakeup(&softc->changer);
1239         xpt_schedule(softc->periph, /*priority*/ 1);
1240
1241         /*
1242          * Get rid of any pending timeouts, and set a flag to schedule new
1243          * ones so this device gets its full time quantum.
1244          */
1245         if (changer->flags & CHANGER_TIMEOUT_SCHED) {
1246                 callout_stop(&changer->long_handle);
1247                 changer->flags &= ~CHANGER_TIMEOUT_SCHED;
1248         }
1249
1250         if (changer->flags & CHANGER_SHORT_TMOUT_SCHED) {
1251                 callout_stop(&changer->short_handle);
1252                 changer->flags &= ~CHANGER_SHORT_TMOUT_SCHED;
1253         }
1254
1255         /*
1256          * We need to schedule timeouts, but we only do this after the
1257          * first transaction has completed.  This eliminates the changer
1258          * switch time.
1259          */
1260         changer->flags |= CHANGER_NEED_TIMEOUT;
1261 }
1262
1263 static void
1264 cdchangerschedule(struct cd_softc *softc)
1265 {
1266         struct cdchanger *changer;
1267
1268         changer = softc->changer;
1269
1270         /*
1271          * If this is a changer, and this is the current device,
1272          * and this device has at least the minimum time quantum to
1273          * run, see if we can switch it out.
1274          */
1275         if ((softc->flags & CD_FLAG_ACTIVE)
1276          && ((changer->flags & CHANGER_SHORT_TMOUT_SCHED) == 0)
1277          && ((changer->flags & CHANGER_NEED_TIMEOUT) == 0)) {
1278                 /*
1279                  * We try three things here.  The first is that we
1280                  * check to see whether the schedule on completion
1281                  * flag is set.  If it is, we decrement the number
1282                  * of buffers left, and if it's zero, we reschedule.
1283                  * Next, we check to see whether the pending buffer
1284                  * queue is empty and whether there are no
1285                  * outstanding transactions.  If so, we reschedule.
1286                  * Next, we see if the pending buffer queue is empty.
1287                  * If it is, we set the number of buffers left to
1288                  * the current active buffer count and set the
1289                  * schedule on complete flag.
1290                  */
1291                 if (softc->flags & CD_FLAG_SCHED_ON_COMP) {
1292                         if (--softc->bufs_left == 0) {
1293                                 softc->changer->flags |=
1294                                         CHANGER_MANUAL_CALL;
1295                                 softc->flags &= ~CD_FLAG_SCHED_ON_COMP;
1296                                 cdrunchangerqueue(softc->changer);
1297                         }
1298                 } else if ((bioq_first(&softc->bio_queue) == NULL)
1299                         && (softc->outstanding_cmds == 0)) {
1300                         softc->changer->flags |= CHANGER_MANUAL_CALL;
1301                         cdrunchangerqueue(softc->changer);
1302                 }
1303         } else if ((softc->changer->flags & CHANGER_NEED_TIMEOUT)
1304                 && (softc->flags & CD_FLAG_ACTIVE)) {
1305
1306                 /*
1307                  * Now that the first transaction to this
1308                  * particular device has completed, we can go ahead
1309                  * and schedule our timeouts.
1310                  */
1311                 if ((changer->flags & CHANGER_TIMEOUT_SCHED) == 0) {
1312                         callout_reset(&changer->long_handle,
1313                                     changer_max_busy_seconds * hz,
1314                                     cdrunchangerqueue, changer);
1315                         changer->flags |= CHANGER_TIMEOUT_SCHED;
1316                 } else
1317                         kprintf("cdchangerschedule: already have a long"
1318                                " timeout!\n");
1319
1320                 if ((changer->flags & CHANGER_SHORT_TMOUT_SCHED) == 0) {
1321                         callout_reset(&changer->short_handle,
1322                                         changer_min_busy_seconds * hz,
1323                                         cdshorttimeout, changer);
1324                         changer->flags |= CHANGER_SHORT_TMOUT_SCHED;
1325                 } else
1326                         kprintf("cdchangerschedule: already have a short "
1327                                "timeout!\n");
1328
1329                 /*
1330                  * We just scheduled timeouts, no need to schedule
1331                  * more.
1332                  */
1333                 changer->flags &= ~CHANGER_NEED_TIMEOUT;
1334
1335         }
1336 }
1337
1338 static int
1339 cdrunccb(union ccb *ccb, int (*error_routine)(union ccb *ccb,
1340                                               u_int32_t cam_flags,
1341                                               u_int32_t sense_flags),
1342          u_int32_t cam_flags, u_int32_t sense_flags)
1343 {
1344         struct cd_softc *softc;
1345         struct cam_periph *periph;
1346         int error;
1347
1348         periph = xpt_path_periph(ccb->ccb_h.path);
1349         softc = (struct cd_softc *)periph->softc;
1350
1351         error = cam_periph_runccb(ccb, error_routine, cam_flags, sense_flags,
1352                                   &softc->device_stats);
1353
1354         if (softc->flags & CD_FLAG_CHANGER)
1355                 cdchangerschedule(softc);
1356
1357         return(error);
1358 }
1359
1360 static union ccb *
1361 cdgetccb(struct cam_periph *periph, u_int32_t priority)
1362 {
1363         struct cd_softc *softc;
1364
1365         softc = (struct cd_softc *)periph->softc;
1366
1367         if (softc->flags & CD_FLAG_CHANGER) {
1368                 /*
1369                  * This should work the first time this device is woken up,
1370                  * but just in case it doesn't, we use a while loop.
1371                  */
1372                 while ((softc->flags & CD_FLAG_ACTIVE) == 0) {
1373                         /*
1374                          * If this changer isn't already queued, queue it up.
1375                          */
1376                         if (softc->pinfo.index == CAM_UNQUEUED_INDEX) {
1377                                 softc->pinfo.priority = 1;
1378                                 softc->pinfo.generation =
1379                                         ++softc->changer->devq.generation;
1380                                 camq_insert(&softc->changer->devq,
1381                                             (cam_pinfo *)softc);
1382                         }
1383                         if (((softc->changer->flags & CHANGER_TIMEOUT_SCHED)==0)
1384                          && ((softc->changer->flags & CHANGER_NEED_TIMEOUT)==0)
1385                          && ((softc->changer->flags
1386                               & CHANGER_SHORT_TMOUT_SCHED)==0)) {
1387                                 softc->changer->flags |= CHANGER_MANUAL_CALL;
1388                                 cdrunchangerqueue(softc->changer);
1389                         } else
1390                                 sim_lock_sleep(&softc->changer, 0, "cgticb", 0,
1391                                                periph->sim->lock);
1392                 }
1393         }
1394         return(cam_periph_getccb(periph, priority));
1395 }
1396
1397 /*
1398  * Actually translate the requested transfer into one the physical driver
1399  * can understand.  The transfer is described by a buf and will include
1400  * only one physical transfer.
1401  */
1402 static int
1403 cdstrategy(struct dev_strategy_args *ap)
1404 {
1405         cdev_t dev = ap->a_head.a_dev;
1406         struct bio *bio = ap->a_bio;
1407         struct buf *bp = bio->bio_buf;
1408         struct cam_periph *periph;
1409         struct cd_softc *softc;
1410         u_int  unit;
1411
1412         unit = dkunit(dev);
1413         periph = cam_extend_get(cdperiphs, unit);
1414         if (periph == NULL) {
1415                 bp->b_error = ENXIO;
1416                 goto bad;
1417         }
1418
1419         cam_periph_lock(periph);
1420         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("entering cdstrategy\n"));
1421
1422         softc = (struct cd_softc *)periph->softc;
1423
1424         /*
1425          * If the device has been made invalid, error out
1426          */
1427         if ((softc->flags & CD_FLAG_INVALID)) {
1428                 cam_periph_unlock(periph);
1429                 bp->b_error = ENXIO;
1430                 goto bad;
1431         }
1432
1433         /*
1434          * If we don't have valid media, look for it before trying to
1435          * schedule the I/O.
1436          */
1437         if ((softc->flags & CD_FLAG_VALID_MEDIA) == 0) {
1438                 int error;
1439
1440                 error = cdcheckmedia(periph);
1441                 if (error != 0) {
1442                         cam_periph_unlock(periph);
1443                         bp->b_error = error;
1444                         goto bad;
1445                 }
1446         }
1447
1448         /*
1449          * Place it in the queue of disk activities for this disk
1450          */
1451         bioqdisksort(&softc->bio_queue, bio);
1452
1453         /*
1454          * Schedule ourselves for performing the work.  We do things
1455          * differently for changers.
1456          */
1457         if ((softc->flags & CD_FLAG_CHANGER) == 0)
1458                 xpt_schedule(periph, /* XXX priority */1);
1459         else
1460                 cdschedule(periph, /* priority */ 1);
1461
1462         cam_periph_unlock(periph);
1463         return(0);
1464 bad:
1465         bp->b_flags |= B_ERROR;
1466         /*
1467          * Correctly set the buf to indicate a completed xfer
1468          */
1469         bp->b_resid = bp->b_bcount;
1470         biodone(bio);
1471         return(0);
1472 }
1473
1474 static void
1475 cdstart(struct cam_periph *periph, union ccb *start_ccb)
1476 {
1477         struct cd_softc *softc;
1478         struct bio *bio;
1479         struct buf *bp;
1480         struct ccb_scsiio *csio;
1481         struct scsi_read_capacity_data *rcap;
1482
1483         softc = (struct cd_softc *)periph->softc;
1484
1485         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("entering cdstart\n"));
1486
1487         switch (softc->state) {
1488         case CD_STATE_NORMAL:
1489         {
1490                 bio = bioq_first(&softc->bio_queue);
1491                 if (periph->immediate_priority <= periph->pinfo.priority) {
1492                         start_ccb->ccb_h.ccb_state = CD_CCB_WAITING;
1493
1494                         SLIST_INSERT_HEAD(&periph->ccb_list, &start_ccb->ccb_h,
1495                                           periph_links.sle);
1496                         periph->immediate_priority = CAM_PRIORITY_NONE;
1497                         wakeup(&periph->ccb_list);
1498                 } else if (bio == NULL) {
1499                         xpt_release_ccb(start_ccb);
1500                 } else {
1501                         bp = bio->bio_buf;
1502                         bioq_remove(&softc->bio_queue, bio);
1503
1504                         devstat_start_transaction(&softc->device_stats);
1505
1506                         KKASSERT(bio->bio_offset % softc->params.blksize == 0);
1507
1508                         scsi_read_write(&start_ccb->csio,
1509                                         /*retries*/4,
1510                                         /* cbfcnp */ cddone,
1511                                         (bp->b_flags & B_ORDERED) != 0 ?
1512                                             MSG_ORDERED_Q_TAG :
1513                                             MSG_SIMPLE_Q_TAG,
1514                                         /* read */(bp->b_cmd == BUF_CMD_READ),
1515                                         /* byte2 */ 0,
1516                                         /* minimum_cmd_size */ 10,
1517                                         /* lba */
1518                                         bio->bio_offset / softc->params.blksize,
1519                                         bp->b_bcount / softc->params.blksize,
1520                                         /* data_ptr */ bp->b_data,
1521                                         /* dxfer_len */ bp->b_bcount,
1522                                         /* sense_len */ SSD_FULL_SIZE,
1523                                         /* timeout */ 30000);
1524                         start_ccb->ccb_h.ccb_state = CD_CCB_BUFFER_IO;
1525
1526
1527                         LIST_INSERT_HEAD(&softc->pending_ccbs,
1528                                          &start_ccb->ccb_h, periph_links.le);
1529
1530                         softc->outstanding_cmds++;
1531                         /* We expect a unit attention from this device */
1532                         if ((softc->flags & CD_FLAG_RETRY_UA) != 0) {
1533                                 start_ccb->ccb_h.ccb_state |= CD_CCB_RETRY_UA;
1534                                 softc->flags &= ~CD_FLAG_RETRY_UA;
1535                         }
1536
1537                         start_ccb->ccb_h.ccb_bio = bio;
1538                         bio = bioq_first(&softc->bio_queue);
1539
1540                         xpt_action(start_ccb);
1541                 }
1542                 if (bio != NULL) {
1543                         /* Have more work to do, so ensure we stay scheduled */
1544                         xpt_schedule(periph, /* XXX priority */1);
1545                 }
1546                 break;
1547         }
1548         case CD_STATE_PROBE:
1549         {
1550
1551                 rcap = kmalloc(sizeof(*rcap), M_SCSICD, M_INTWAIT);
1552                 csio = &start_ccb->csio;
1553                 scsi_read_capacity(csio,
1554                                    /*retries*/1,
1555                                    cddone,
1556                                    MSG_SIMPLE_Q_TAG,
1557                                    rcap,
1558                                    SSD_FULL_SIZE,
1559                                    /*timeout*/20000);
1560                 start_ccb->ccb_h.ccb_bio = NULL;
1561                 start_ccb->ccb_h.ccb_state = CD_CCB_PROBE;
1562                 xpt_action(start_ccb);
1563                 break;
1564         }
1565         }
1566 }
1567
1568 static void
1569 cddone(struct cam_periph *periph, union ccb *done_ccb)
1570 {
1571         struct cd_softc *softc;
1572         struct ccb_scsiio *csio;
1573
1574         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("entering cddone\n"));
1575
1576         softc = (struct cd_softc *)periph->softc;
1577         csio = &done_ccb->csio;
1578
1579         switch (csio->ccb_h.ccb_state & CD_CCB_TYPE_MASK) {
1580         case CD_CCB_BUFFER_IO:
1581         {
1582                 struct buf      *bp;
1583                 struct bio      *bio;
1584                 int             error;
1585
1586                 bio = (struct bio *)done_ccb->ccb_h.ccb_bio;
1587                 bp = bio->bio_buf;
1588                 error = 0;
1589
1590                 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1591                         int sf;
1592
1593                         if ((done_ccb->ccb_h.ccb_state & CD_CCB_RETRY_UA) != 0)
1594                                 sf = SF_RETRY_UA;
1595                         else
1596                                 sf = 0;
1597
1598                         error = cderror(done_ccb, CAM_RETRY_SELTO, sf);
1599                         if (error == ERESTART) {
1600                                 /*
1601                                  * A retry was scheuled, so
1602                                  * just return.
1603                                  */
1604                                 return;
1605                         }
1606                 }
1607
1608                 if (error != 0) {
1609                         struct bio *q_bio;
1610                         struct buf *q_bp;
1611
1612                         xpt_print(periph->path,
1613                                   "cddone: got error %#x back\n", error);
1614                         while ((q_bio = bioq_takefirst(&softc->bio_queue)) != NULL) {
1615                                 q_bp = q_bio->bio_buf;
1616                                 q_bp->b_resid = q_bp->b_bcount;
1617                                 q_bp->b_error = EIO;
1618                                 q_bp->b_flags |= B_ERROR;
1619                                 biodone(q_bio);
1620                         }
1621                         bp->b_resid = bp->b_bcount;
1622                         bp->b_error = error;
1623                         bp->b_flags |= B_ERROR;
1624                         cam_release_devq(done_ccb->ccb_h.path,
1625                                          /*relsim_flags*/0,
1626                                          /*reduction*/0,
1627                                          /*timeout*/0,
1628                                          /*getcount_only*/0);
1629
1630                 } else {
1631                         bp->b_resid = csio->resid;
1632                         bp->b_error = 0;
1633                         if (bp->b_resid != 0) {
1634                                 /* Short transfer ??? */
1635                                 bp->b_flags |= B_ERROR;
1636                         }
1637                 }
1638
1639                 LIST_REMOVE(&done_ccb->ccb_h, periph_links.le);
1640                 softc->outstanding_cmds--;
1641
1642                 if (softc->flags & CD_FLAG_CHANGER)
1643                         cdchangerschedule(softc);
1644
1645                 devstat_end_transaction_buf(&softc->device_stats, bp);
1646                 biodone(bio);
1647                 break;
1648         }
1649         case CD_CCB_PROBE:
1650         {
1651                 /*
1652                  * Currently (9/30/97) the longest possible announce
1653                  * buffer is 108 bytes, for the first error case below.
1654                  * That is 39 bytes for the basic string, 16 bytes for the
1655                  * biggest sense key (hardware error), 52 bytes for the
1656                  * text of the largest sense qualifier valid for a CDROM,
1657                  * (0x72, 0x03 or 0x04, 0x03), and one byte for the
1658                  * null terminating character.  To allow for longer strings,
1659                  * the announce buffer is 120 bytes.
1660                  *
1661                  * We need to call disk_setdiskinfo() before the disk
1662                  * subsystem will allow any opens.  Because additional
1663                  * probe code is in cdopen() we do this now whether a CD
1664                  * is present or not.
1665                  */
1666                 struct  scsi_read_capacity_data *rdcap;
1667                 struct  disk_info info;
1668                 char    announce_buf[120];
1669                 struct  cd_params *cdp;
1670
1671                 cdp = &softc->params;
1672                 bzero(&info, sizeof(info));
1673                 info.d_type = DTYPE_SCSI;
1674                 info.d_dsflags &= ~DSO_COMPATLABEL;
1675                 info.d_dsflags |= DSO_NOLABELS | DSO_COMPATPARTA;
1676                 info.d_serialno = xpt_path_serialno(periph->path);
1677
1678                 rdcap = (struct scsi_read_capacity_data *)csio->data_ptr;
1679
1680                 cdp->disksize = scsi_4btoul (rdcap->addr) + 1;
1681                 cdp->blksize = scsi_4btoul (rdcap->length);
1682
1683                 if ((csio->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP) {
1684                         ksnprintf(announce_buf, sizeof(announce_buf),
1685                                   "cd present [%lu x %lu byte records]",
1686                                   cdp->disksize, (u_long)cdp->blksize);
1687                         info.d_media_blksize = cdp->blksize;
1688                         info.d_media_blocks = cdp->disksize;
1689                         disk_setdiskinfo(&softc->disk, &info);
1690                 } else {
1691                         int     error;
1692
1693                         /*
1694                          * Retry any UNIT ATTENTION type errors.  They
1695                          * are expected at boot.
1696                          */
1697                         error = cderror(done_ccb, CAM_RETRY_SELTO,
1698                                         SF_RETRY_UA | SF_NO_PRINT);
1699                         if (error == ERESTART) {
1700                                 /*
1701                                  * A retry was scheuled, so
1702                                  * just return.
1703                                  */
1704                                 return;
1705                         } else if (error != 0) {
1706                                 struct scsi_sense_data *sense;
1707                                 int asc, ascq;
1708                                 int sense_key, error_code;
1709                                 int have_sense;
1710                                 cam_status status;
1711                                 struct ccb_getdev cgd;
1712
1713                                 /* Don't wedge this device's queue */
1714                                 cam_release_devq(done_ccb->ccb_h.path,
1715                                                  /*relsim_flags*/0,
1716                                                  /*reduction*/0,
1717                                                  /*timeout*/0,
1718                                                  /*getcount_only*/0);
1719
1720                                 status = done_ccb->ccb_h.status;
1721
1722                                 xpt_setup_ccb(&cgd.ccb_h,
1723                                               done_ccb->ccb_h.path,
1724                                               /* priority */ 1);
1725                                 cgd.ccb_h.func_code = XPT_GDEV_TYPE;
1726                                 xpt_action((union ccb *)&cgd);
1727
1728                                 if (((csio->ccb_h.flags & CAM_SENSE_PHYS) != 0)
1729                                  || ((csio->ccb_h.flags & CAM_SENSE_PTR) != 0)
1730                                  || ((status & CAM_AUTOSNS_VALID) == 0))
1731                                         have_sense = FALSE;
1732                                 else
1733                                         have_sense = TRUE;
1734
1735                                 if (have_sense) {
1736                                         sense = &csio->sense_data;
1737                                         scsi_extract_sense(sense, &error_code,
1738                                                            &sense_key,
1739                                                            &asc, &ascq);
1740                                 }
1741                                 /*
1742                                  * Attach to anything that claims to be a
1743                                  * CDROM or WORM device, as long as it
1744                                  * doesn't return a "Logical unit not
1745                                  * supported" (0x25) error.
1746                                  */
1747                                 if ((have_sense) && (asc != 0x25)
1748                                  && (error_code == SSD_CURRENT_ERROR)) {
1749                                         const char *sense_key_desc;
1750                                         const char *asc_desc;
1751
1752                                         scsi_sense_desc(sense_key, asc, ascq,
1753                                                         &cgd.inq_data,
1754                                                         &sense_key_desc,
1755                                                         &asc_desc);
1756                                         ksnprintf(announce_buf,
1757                                             sizeof(announce_buf),
1758                                                 "Attempt to query device "
1759                                                 "size failed: %s, %s",
1760                                                 sense_key_desc,
1761                                                 asc_desc);
1762                                         info.d_media_blksize = 2048;
1763                                         disk_setdiskinfo(&softc->disk, &info);
1764                                 } else if (SID_TYPE(&cgd.inq_data) == T_CDROM) {
1765                                         /*
1766                                          * We only print out an error for
1767                                          * CDROM type devices.  For WORM
1768                                          * devices, we don't print out an
1769                                          * error since a few WORM devices
1770                                          * don't support CDROM commands.
1771                                          * If we have sense information, go
1772                                          * ahead and print it out.
1773                                          * Otherwise, just say that we
1774                                          * couldn't attach.
1775                                          */
1776
1777                                         /*
1778                                          * Just print out the error, not
1779                                          * the full probe message, when we
1780                                          * don't attach.
1781                                          */
1782                                         if (have_sense)
1783                                                 scsi_sense_print(
1784                                                         &done_ccb->csio);
1785                                         else {
1786                                                 xpt_print(periph->path,
1787                                                     "got CAM status %#x\n",
1788                                                     done_ccb->ccb_h.status);
1789                                         }
1790                                         xpt_print(periph->path, "fatal error, "
1791                                             "failed to attach to device\n");
1792                                         /*
1793                                          * Invalidate this peripheral.
1794                                          */
1795                                         cam_periph_invalidate(periph);
1796
1797                                         announce_buf[0] = '\0';
1798                                 } else {
1799
1800                                         /*
1801                                          * Invalidate this peripheral.
1802                                          */
1803                                         cam_periph_invalidate(periph);
1804                                         announce_buf[0] = '\0';
1805                                 }
1806                         }
1807                 }
1808                 kfree(rdcap, M_SCSICD);
1809                 if (announce_buf[0] != '\0') {
1810                         xpt_announce_periph(periph, announce_buf);
1811                         if (softc->flags & CD_FLAG_CHANGER)
1812                                 cdchangerschedule(softc);
1813                         /*
1814                          * Create our sysctl variables, now that we know
1815                          * we have successfully attached.
1816                          */
1817                         taskqueue_enqueue(taskqueue_thread[mycpuid],
1818                             &softc->sysctl_task);
1819                 }
1820                 softc->state = CD_STATE_NORMAL;
1821                 /*
1822                  * Since our peripheral may be invalidated by an error
1823                  * above or an external event, we must release our CCB
1824                  * before releasing the probe lock on the peripheral.
1825                  * The peripheral will only go away once the last lock
1826                  * is removed, and we need it around for the CCB release
1827                  * operation.
1828                  */
1829                 xpt_release_ccb(done_ccb);
1830                 cam_periph_unhold(periph, 0);
1831                 return;
1832         }
1833         case CD_CCB_WAITING:
1834         {
1835                 /* Caller will release the CCB */
1836                 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE,
1837                           ("trying to wakeup ccbwait\n"));
1838
1839                 wakeup(&done_ccb->ccb_h.cbfcnp);
1840                 return;
1841         }
1842         default:
1843                 break;
1844         }
1845         xpt_release_ccb(done_ccb);
1846 }
1847
1848 static union cd_pages *
1849 cdgetpage(struct cd_mode_params *mode_params)
1850 {
1851         union cd_pages *page;
1852
1853         if (mode_params->cdb_size == 10)
1854                 page = (union cd_pages *)find_mode_page_10(
1855                         (struct scsi_mode_header_10 *)mode_params->mode_buf);
1856         else
1857                 page = (union cd_pages *)find_mode_page_6(
1858                         (struct scsi_mode_header_6 *)mode_params->mode_buf);
1859
1860         return (page);
1861 }
1862
1863 static int
1864 cdgetpagesize(int page_num)
1865 {
1866         int i;
1867
1868         for (i = 0; i < NELEM(cd_page_size_table); i++) {
1869                 if (cd_page_size_table[i].page == page_num)
1870                         return (cd_page_size_table[i].page_size);
1871         }
1872         return (-1);
1873 }
1874
1875 static int
1876 cdioctl(struct dev_ioctl_args *ap)
1877 {
1878         cdev_t dev = ap->a_head.a_dev;
1879         caddr_t addr = ap->a_data;
1880         struct  cam_periph *periph;
1881         struct  cd_softc *softc;
1882         int     unit, error = 0;
1883
1884         unit = dkunit(dev);
1885
1886         periph = cam_extend_get(cdperiphs, unit);
1887         if (periph == NULL)
1888                 return(ENXIO);
1889
1890         cam_periph_lock(periph);
1891         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("entering cdioctl\n"));
1892
1893         softc = (struct cd_softc *)periph->softc;
1894
1895         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE,
1896                   ("trying to do ioctl %#lx\n", ap->a_cmd));
1897
1898         if ((error = cam_periph_hold(periph, PCATCH)) != 0) {
1899                 cam_periph_unlock(periph);
1900                 cam_periph_release(periph);
1901                 return (error);
1902         }
1903
1904         /*
1905          * If we don't have media loaded, check for it.  If still don't
1906          * have media loaded, we can only do a load or eject.
1907          *
1908          * We only care whether media is loaded if this is a cd-specific ioctl
1909          * (thus the IOCGROUP check below).  Note that this will break if
1910          * anyone adds any ioctls into the switch statement below that don't
1911          * have their ioctl group set to 'c'.
1912          */
1913         if (((softc->flags & CD_FLAG_VALID_MEDIA) == 0)
1914             && ((ap->a_cmd != CDIOCCLOSE)
1915             && (ap->a_cmd != CDIOCEJECT))
1916             && (IOCGROUP(ap->a_cmd) == 'c')) {
1917                 error = cdcheckmedia(periph);
1918                 if (error != 0) {
1919                         cam_periph_unhold(periph, 1);
1920                         return (error);
1921                 }
1922         }
1923         /*
1924          * Drop the lock here so later mallocs can use WAITOK.  The periph
1925          * is essentially locked still with the cam_periph_hold call above.
1926          */
1927         cam_periph_unlock(periph);
1928
1929         switch (ap->a_cmd) {
1930
1931         case CDIOCPLAYTRACKS:
1932                 {
1933                         struct ioc_play_track *args
1934                             = (struct ioc_play_track *)addr;
1935                         struct cd_mode_params params;
1936                         union cd_pages *page;
1937
1938                         params.alloc_len = sizeof(union cd_mode_data_6_10);
1939                         params.mode_buf = kmalloc(params.alloc_len, M_SCSICD,
1940                                                  M_WAITOK | M_ZERO);
1941
1942                         cam_periph_lock(periph);
1943                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
1944                                   ("trying to do CDIOCPLAYTRACKS\n"));
1945
1946                         error = cdgetmode(periph, &params, AUDIO_PAGE);
1947                         if (error) {
1948                                 kfree(params.mode_buf, M_SCSICD);
1949                                 cam_periph_unlock(periph);
1950                                 break;
1951                         }
1952                         page = cdgetpage(&params);
1953
1954                         page->audio.flags &= ~CD_PA_SOTC;
1955                         page->audio.flags |= CD_PA_IMMED;
1956                         error = cdsetmode(periph, &params);
1957                         kfree(params.mode_buf, M_SCSICD);
1958                         if (error) {
1959                                 cam_periph_unlock(periph);
1960                                 break;
1961                         }
1962
1963                         /*
1964                          * This was originally implemented with the PLAY
1965                          * AUDIO TRACK INDEX command, but that command was
1966                          * deprecated after SCSI-2.  Most (all?) SCSI CDROM
1967                          * drives support it but ATAPI and ATAPI-derivative
1968                          * drives don't seem to support it.  So we keep a
1969                          * cache of the table of contents and translate
1970                          * track numbers to MSF format.
1971                          */
1972                         if (softc->flags & CD_FLAG_VALID_TOC) {
1973                                 union msf_lba *sentry, *eentry;
1974                                 int st, et;
1975
1976                                 if (args->end_track <
1977                                     softc->toc.header.ending_track + 1)
1978                                         args->end_track++;
1979                                 if (args->end_track >
1980                                     softc->toc.header.ending_track + 1)
1981                                         args->end_track =
1982                                             softc->toc.header.ending_track + 1;
1983                                 st = args->start_track -
1984                                         softc->toc.header.starting_track;
1985                                 et = args->end_track -
1986                                         softc->toc.header.starting_track;
1987                                 if ((st < 0)
1988                                  || (et < 0)
1989                                  || (st > (softc->toc.header.ending_track -
1990                                      softc->toc.header.starting_track))) {
1991                                         error = EINVAL;
1992                                         break;
1993                                 }
1994                                 sentry = &softc->toc.entries[st].addr;
1995                                 eentry = &softc->toc.entries[et].addr;
1996                                 error = cdplaymsf(periph,
1997                                                   sentry->msf.minute,
1998                                                   sentry->msf.second,
1999                                                   sentry->msf.frame,
2000                                                   eentry->msf.minute,
2001                                                   eentry->msf.second,
2002                                                   eentry->msf.frame);
2003                         } else {
2004                                 /*
2005                                  * If we don't have a valid TOC, try the
2006                                  * play track index command.  It is part of
2007                                  * the SCSI-2 spec, but was removed in the
2008                                  * MMC specs.  ATAPI and ATAPI-derived
2009                                  * drives don't support it.
2010                                  */
2011                                 if (softc->quirks & CD_Q_BCD_TRACKS) {
2012                                         args->start_track =
2013                                                 bin2bcd(args->start_track);
2014                                         args->end_track =
2015                                                 bin2bcd(args->end_track);
2016                                 }
2017                                 error = cdplaytracks(periph,
2018                                                      args->start_track,
2019                                                      args->start_index,
2020                                                      args->end_track,
2021                                                      args->end_index);
2022                         }
2023                         cam_periph_unlock(periph);
2024                 }
2025                 break;
2026         case CDIOCPLAYMSF:
2027                 {
2028                         struct ioc_play_msf *args
2029                                 = (struct ioc_play_msf *) addr;
2030                         struct cd_mode_params params;
2031                         union cd_pages *page;
2032
2033                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2034                         params.mode_buf = kmalloc(params.alloc_len, M_SCSICD,
2035                                                  M_WAITOK | M_ZERO);
2036
2037                         cam_periph_lock(periph);
2038                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2039                                   ("trying to do CDIOCPLAYMSF\n"));
2040
2041                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2042                         if (error) {
2043                                 kfree(params.mode_buf, M_SCSICD);
2044                                 cam_periph_unlock(periph);
2045                                 break;
2046                         }
2047                         page = cdgetpage(&params);
2048
2049                         page->audio.flags &= ~CD_PA_SOTC;
2050                         page->audio.flags |= CD_PA_IMMED;
2051                         error = cdsetmode(periph, &params);
2052                         kfree(params.mode_buf, M_SCSICD);
2053                         if (error) {
2054                                 cam_periph_unlock(periph);
2055                                 break;
2056                         }
2057                         error = cdplaymsf(periph,
2058                                           args->start_m,
2059                                           args->start_s,
2060                                           args->start_f,
2061                                           args->end_m,
2062                                           args->end_s,
2063                                           args->end_f);
2064                         cam_periph_unlock(periph);
2065                 }
2066                 break;
2067         case CDIOCPLAYBLOCKS:
2068                 {
2069                         struct ioc_play_blocks *args
2070                                 = (struct ioc_play_blocks *) addr;
2071                         struct cd_mode_params params;
2072                         union cd_pages *page;
2073
2074                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2075                         params.mode_buf = kmalloc(params.alloc_len, M_SCSICD,
2076                                                  M_WAITOK | M_ZERO);
2077                         cam_periph_lock(periph);
2078                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2079                                   ("trying to do CDIOCPLAYBLOCKS\n"));
2080
2081
2082                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2083                         if (error) {
2084                                 kfree(params.mode_buf, M_SCSICD);
2085                                 cam_periph_unlock(periph);
2086                                 break;
2087                         }
2088                         page = cdgetpage(&params);
2089
2090                         page->audio.flags &= ~CD_PA_SOTC;
2091                         page->audio.flags |= CD_PA_IMMED;
2092                         error = cdsetmode(periph, &params);
2093                         kfree(params.mode_buf, M_SCSICD);
2094                         if (error) {
2095                                 cam_periph_unlock(periph);
2096                                 break;
2097                         }
2098                         error = cdplay(periph, args->blk, args->len);
2099                         cam_periph_unlock(periph);
2100                 }
2101                 break;
2102         case CDIOCREADSUBCHANNEL:
2103                 {
2104                         struct ioc_read_subchannel *args
2105                                 = (struct ioc_read_subchannel *) addr;
2106                         struct cd_sub_channel_info *data;
2107                         u_int32_t len = args->data_len;
2108
2109                         data = kmalloc(sizeof(struct cd_sub_channel_info),
2110                                       M_SCSICD, M_WAITOK);
2111
2112                         cam_periph_lock(periph);
2113                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2114                                   ("trying to do CDIOCREADSUBCHANNEL\n"));
2115
2116                         if ((len > sizeof(struct cd_sub_channel_info)) ||
2117                             (len < sizeof(struct cd_sub_channel_header))) {
2118                                 kprintf(
2119                                         "scsi_cd: cdioctl: "
2120                                         "cdioreadsubchannel: error, len=%d\n",
2121                                         len);
2122                                 error = EINVAL;
2123                                 kfree(data, M_SCSICD);
2124                                 cam_periph_unlock(periph);
2125                                 break;
2126                         }
2127
2128                         if (softc->quirks & CD_Q_BCD_TRACKS)
2129                                 args->track = bin2bcd(args->track);
2130
2131                         error = cdreadsubchannel(periph, args->address_format,
2132                                 args->data_format, args->track, data, len);
2133
2134                         if (error) {
2135                                 kfree(data, M_SCSICD);
2136                                 cam_periph_unlock(periph);
2137                                 break;
2138                         }
2139                         if (softc->quirks & CD_Q_BCD_TRACKS)
2140                                 data->what.track_info.track_number =
2141                                     bcd2bin(data->what.track_info.track_number);
2142                         len = min(len, ((data->header.data_len[0] << 8) +
2143                                 data->header.data_len[1] +
2144                                 sizeof(struct cd_sub_channel_header)));
2145                         cam_periph_unlock(periph);
2146                         if (copyout(data, args->data, len) != 0) {
2147                                 error = EFAULT;
2148                         }
2149                         kfree(data, M_SCSICD);
2150                 }
2151                 break;
2152
2153         case CDIOREADTOCHEADER:
2154                 {
2155                         struct ioc_toc_header *th;
2156
2157                         th = kmalloc(sizeof(struct ioc_toc_header), M_SCSICD,
2158                                     M_WAITOK);
2159
2160                         cam_periph_lock(periph);
2161                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2162                                   ("trying to do CDIOREADTOCHEADER\n"));
2163
2164                         error = cdreadtoc(periph, 0, 0, (u_int8_t *)th,
2165                                           sizeof (*th), /*sense_flags*/0);
2166                         if (error) {
2167                                 kfree(th, M_SCSICD);
2168                                 cam_periph_unlock(periph);
2169                                 break;
2170                         }
2171                         if (softc->quirks & CD_Q_BCD_TRACKS) {
2172                                 /* we are going to have to convert the BCD
2173                                  * encoding on the cd to what is expected
2174                                  */
2175                                 th->starting_track =
2176                                         bcd2bin(th->starting_track);
2177                                 th->ending_track = bcd2bin(th->ending_track);
2178                         }
2179                         th->len = ntohs(th->len);
2180                         bcopy(th, addr, sizeof(*th));
2181                         kfree(th, M_SCSICD);
2182                         cam_periph_unlock(periph);
2183                 }
2184                 break;
2185         case CDIOREADTOCENTRYS:
2186                 {
2187                         struct cd_tocdata *data;
2188                         struct cd_toc_single *lead;
2189                         struct ioc_read_toc_entry *te =
2190                                 (struct ioc_read_toc_entry *) addr;
2191                         struct ioc_toc_header *th;
2192                         u_int32_t len, readlen, idx, num;
2193                         u_int32_t starting_track = te->starting_track;
2194
2195                         data = kmalloc(sizeof(*data), M_SCSICD, M_WAITOK);
2196                         lead = kmalloc(sizeof(*lead), M_SCSICD, M_WAITOK);
2197
2198                         cam_periph_lock(periph);
2199                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2200                                   ("trying to do CDIOREADTOCENTRYS\n"));
2201
2202                         if (te->data_len < sizeof(struct cd_toc_entry)
2203                          || (te->data_len % sizeof(struct cd_toc_entry)) != 0
2204                          || (te->address_format != CD_MSF_FORMAT
2205                           && te->address_format != CD_LBA_FORMAT)) {
2206                                 error = EINVAL;
2207                                 kprintf("scsi_cd: error in readtocentries, "
2208                                        "returning EINVAL\n");
2209                                 kfree(data, M_SCSICD);
2210                                 kfree(lead, M_SCSICD);
2211                                 cam_periph_unlock(periph);
2212                                 break;
2213                         }
2214
2215                         th = &data->header;
2216                         error = cdreadtoc(periph, 0, 0, (u_int8_t *)th,
2217                                           sizeof (*th), /*sense_flags*/0);
2218                         if (error) {
2219                                 kfree(data, M_SCSICD);
2220                                 kfree(lead, M_SCSICD);
2221                                 cam_periph_unlock(periph);
2222                                 break;
2223                         }
2224
2225                         if (softc->quirks & CD_Q_BCD_TRACKS) {
2226                                 /* we are going to have to convert the BCD
2227                                  * encoding on the cd to what is expected
2228                                  */
2229                                 th->starting_track =
2230                                     bcd2bin(th->starting_track);
2231                                 th->ending_track = bcd2bin(th->ending_track);
2232                         }
2233
2234                         if (starting_track == 0)
2235                                 starting_track = th->starting_track;
2236                         else if (starting_track == LEADOUT)
2237                                 starting_track = th->ending_track + 1;
2238                         else if (starting_track < th->starting_track ||
2239                                  starting_track > th->ending_track + 1) {
2240                                 kprintf("scsi_cd: error in readtocentries, "
2241                                        "returning EINVAL\n");
2242                                 kfree(data, M_SCSICD);
2243                                 kfree(lead, M_SCSICD);
2244                                 cam_periph_unlock(periph);
2245                                 error = EINVAL;
2246                                 break;
2247                         }
2248
2249                         /* calculate reading length without leadout entry */
2250                         readlen = (th->ending_track - starting_track + 1) *
2251                                   sizeof(struct cd_toc_entry);
2252
2253                         /* and with leadout entry */
2254                         len = readlen + sizeof(struct cd_toc_entry);
2255                         if (te->data_len < len) {
2256                                 len = te->data_len;
2257                                 if (readlen > len)
2258                                         readlen = len;
2259                         }
2260                         if (len > sizeof(data->entries)) {
2261                                 kprintf("scsi_cd: error in readtocentries, "
2262                                        "returning EINVAL\n");
2263                                 error = EINVAL;
2264                                 kfree(data, M_SCSICD);
2265                                 kfree(lead, M_SCSICD);
2266                                 cam_periph_unlock(periph);
2267                                 break;
2268                         }
2269                         num = len / sizeof(struct cd_toc_entry);
2270
2271                         if (readlen > 0) {
2272                                 error = cdreadtoc(periph, te->address_format,
2273                                                   starting_track,
2274                                                   (u_int8_t *)data,
2275                                                   readlen + sizeof (*th),
2276                                                   /*sense_flags*/0);
2277                                 if (error) {
2278                                         kfree(data, M_SCSICD);
2279                                         kfree(lead, M_SCSICD);
2280                                         cam_periph_unlock(periph);
2281                                         break;
2282                                 }
2283                         }
2284
2285                         /* make leadout entry if needed */
2286                         idx = starting_track + num - 1;
2287                         if (softc->quirks & CD_Q_BCD_TRACKS)
2288                                 th->ending_track = bcd2bin(th->ending_track);
2289                         if (idx == th->ending_track + 1) {
2290                                 error = cdreadtoc(periph, te->address_format,
2291                                                   LEADOUT, (u_int8_t *)lead,
2292                                                   sizeof(*lead),
2293                                                   /*sense_flags*/0);
2294                                 if (error) {
2295                                         kfree(data, M_SCSICD);
2296                                         kfree(lead, M_SCSICD);
2297                                         cam_periph_unlock(periph);
2298                                         break;
2299                                 }
2300                                 data->entries[idx - starting_track] =
2301                                         lead->entry;
2302                         }
2303                         if (softc->quirks & CD_Q_BCD_TRACKS) {
2304                                 for (idx = 0; idx < num - 1; idx++) {
2305                                         data->entries[idx].track =
2306                                             bcd2bin(data->entries[idx].track);
2307                                 }
2308                         }
2309
2310                         cam_periph_unlock(periph);
2311                         error = copyout(data->entries, te->data, len);
2312                         kfree(data, M_SCSICD);
2313                         kfree(lead, M_SCSICD);
2314                 }
2315                 break;
2316         case CDIOREADTOCENTRY:
2317                 {
2318                         struct cd_toc_single *data;
2319                         struct ioc_read_toc_single_entry *te =
2320                                 (struct ioc_read_toc_single_entry *) addr;
2321                         struct ioc_toc_header *th;
2322                         u_int32_t track;
2323
2324                         data = kmalloc(sizeof(*data), M_SCSICD, M_WAITOK);
2325
2326                         cam_periph_lock(periph);
2327                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2328                                   ("trying to do CDIOREADTOCENTRY\n"));
2329
2330                         if (te->address_format != CD_MSF_FORMAT
2331                             && te->address_format != CD_LBA_FORMAT) {
2332                                 kprintf("error in readtocentry, "
2333                                        " returning EINVAL\n");
2334                                 kfree(data, M_SCSICD);
2335                                 error = EINVAL;
2336                                 cam_periph_unlock(periph);
2337                                 break;
2338                         }
2339
2340                         th = &data->header;
2341                         error = cdreadtoc(periph, 0, 0, (u_int8_t *)th,
2342                                           sizeof (*th), /*sense_flags*/0);
2343                         if (error) {
2344                                 kfree(data, M_SCSICD);
2345                                 cam_periph_unlock(periph);
2346                                 break;
2347                         }
2348
2349                         if (softc->quirks & CD_Q_BCD_TRACKS) {
2350                                 /* we are going to have to convert the BCD
2351                                  * encoding on the cd to what is expected
2352                                  */
2353                                 th->starting_track =
2354                                     bcd2bin(th->starting_track);
2355                                 th->ending_track = bcd2bin(th->ending_track);
2356                         }
2357                         track = te->track;
2358                         if (track == 0)
2359                                 track = th->starting_track;
2360                         else if (track == LEADOUT)
2361                                 /* OK */;
2362                         else if (track < th->starting_track ||
2363                                  track > th->ending_track + 1) {
2364                                 kprintf("error in readtocentry, "
2365                                        " returning EINVAL\n");
2366                                 kfree(data, M_SCSICD);
2367                                 error = EINVAL;
2368                                 cam_periph_unlock(periph);
2369                                 break;
2370                         }
2371
2372                         error = cdreadtoc(periph, te->address_format, track,
2373                                           (u_int8_t *)data, sizeof(*data),
2374                                           /*sense_flags*/0);
2375                         if (error) {
2376                                 kfree(data, M_SCSICD);
2377                                 cam_periph_unlock(periph);
2378                                 break;
2379                         }
2380
2381                         if (softc->quirks & CD_Q_BCD_TRACKS)
2382                                 data->entry.track = bcd2bin(data->entry.track);
2383                         bcopy(&data->entry, &te->entry,
2384                               sizeof(struct cd_toc_entry));
2385                         kfree(data, M_SCSICD);
2386                         cam_periph_unlock(periph);
2387                 }
2388                 break;
2389         case CDIOCSETPATCH:
2390                 {
2391                         struct ioc_patch *arg = (struct ioc_patch *)addr;
2392                         struct cd_mode_params params;
2393                         union cd_pages *page;
2394
2395                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2396                         params.mode_buf = kmalloc(params.alloc_len, M_SCSICD,
2397                                                  M_WAITOK | M_ZERO);
2398
2399                         cam_periph_lock(periph);
2400                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2401                                   ("trying to do CDIOCSETPATCH\n"));
2402
2403                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2404                         if (error) {
2405                                 kfree(params.mode_buf, M_SCSICD);
2406                                 cam_periph_unlock(periph);
2407                                 break;
2408                         }
2409                         page = cdgetpage(&params);
2410
2411                         page->audio.port[LEFT_PORT].channels =
2412                                 arg->patch[0];
2413                         page->audio.port[RIGHT_PORT].channels =
2414                                 arg->patch[1];
2415                         page->audio.port[2].channels = arg->patch[2];
2416                         page->audio.port[3].channels = arg->patch[3];
2417                         error = cdsetmode(periph, &params);
2418                         kfree(params.mode_buf, M_SCSICD);
2419                         cam_periph_unlock(periph);
2420                 }
2421                 break;
2422         case CDIOCGETVOL:
2423                 {
2424                         struct ioc_vol *arg = (struct ioc_vol *) addr;
2425                         struct cd_mode_params params;
2426                         union cd_pages *page;
2427
2428                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2429                         params.mode_buf = kmalloc(params.alloc_len, M_SCSICD,
2430                                                  M_WAITOK | M_ZERO);
2431
2432                         cam_periph_lock(periph);
2433                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2434                                   ("trying to do CDIOCGETVOL\n"));
2435
2436                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2437                         if (error) {
2438                                 kfree(params.mode_buf, M_SCSICD);
2439                                 cam_periph_unlock(periph);
2440                                 break;
2441                         }
2442                         page = cdgetpage(&params);
2443
2444                         arg->vol[LEFT_PORT] =
2445                                 page->audio.port[LEFT_PORT].volume;
2446                         arg->vol[RIGHT_PORT] =
2447                                 page->audio.port[RIGHT_PORT].volume;
2448                         arg->vol[2] = page->audio.port[2].volume;
2449                         arg->vol[3] = page->audio.port[3].volume;
2450                         kfree(params.mode_buf, M_SCSICD);
2451                         cam_periph_unlock(periph);
2452                 }
2453                 break;
2454         case CDIOCSETVOL:
2455                 {
2456                         struct ioc_vol *arg = (struct ioc_vol *) addr;
2457                         struct cd_mode_params params;
2458                         union cd_pages *page;
2459
2460                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2461                         params.mode_buf = kmalloc(params.alloc_len, M_SCSICD,
2462                                                  M_WAITOK | M_ZERO);
2463
2464                         cam_periph_lock(periph);
2465                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2466                                   ("trying to do CDIOCSETVOL\n"));
2467
2468                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2469                         if (error) {
2470                                 kfree(params.mode_buf, M_SCSICD);
2471                                 cam_periph_unlock(periph);
2472                                 break;
2473                         }
2474                         page = cdgetpage(&params);
2475
2476                         page->audio.port[LEFT_PORT].channels = CHANNEL_0;
2477                         page->audio.port[LEFT_PORT].volume =
2478                                 arg->vol[LEFT_PORT];
2479                         page->audio.port[RIGHT_PORT].channels = CHANNEL_1;
2480                         page->audio.port[RIGHT_PORT].volume =
2481                                 arg->vol[RIGHT_PORT];
2482                         page->audio.port[2].volume = arg->vol[2];
2483                         page->audio.port[3].volume = arg->vol[3];
2484                         error = cdsetmode(periph, &params);
2485                         cam_periph_unlock(periph);
2486                         kfree(params.mode_buf, M_SCSICD);
2487                 }
2488                 break;
2489         case CDIOCSETMONO:
2490                 {
2491                         struct cd_mode_params params;
2492                         union cd_pages *page;
2493
2494                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2495                         params.mode_buf = kmalloc(params.alloc_len, M_SCSICD,
2496                                                  M_WAITOK | M_ZERO);
2497
2498                         cam_periph_lock(periph);
2499                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2500                                   ("trying to do CDIOCSETMONO\n"));
2501
2502                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2503                         if (error) {
2504                                 kfree(params.mode_buf, M_SCSICD);
2505                                 cam_periph_unlock(periph);
2506                                 break;
2507                         }
2508                         page = cdgetpage(&params);
2509
2510                         page->audio.port[LEFT_PORT].channels =
2511                                 LEFT_CHANNEL | RIGHT_CHANNEL;
2512                         page->audio.port[RIGHT_PORT].channels =
2513                                 LEFT_CHANNEL | RIGHT_CHANNEL;
2514                         page->audio.port[2].channels = 0;
2515                         page->audio.port[3].channels = 0;
2516                         error = cdsetmode(periph, &params);
2517                         cam_periph_unlock(periph);
2518                         kfree(params.mode_buf, M_SCSICD);
2519                 }
2520                 break;
2521         case CDIOCSETSTEREO:
2522                 {
2523                         struct cd_mode_params params;
2524                         union cd_pages *page;
2525
2526                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2527                         params.mode_buf = kmalloc(params.alloc_len, M_SCSICD,
2528                                                  M_WAITOK | M_ZERO);
2529
2530                         cam_periph_lock(periph);
2531                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2532                                   ("trying to do CDIOCSETSTEREO\n"));
2533
2534                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2535                         if (error) {
2536                                 kfree(params.mode_buf, M_SCSICD);
2537                                 cam_periph_unlock(periph);
2538                                 break;
2539                         }
2540                         page = cdgetpage(&params);
2541
2542                         page->audio.port[LEFT_PORT].channels =
2543                                 LEFT_CHANNEL;
2544                         page->audio.port[RIGHT_PORT].channels =
2545                                 RIGHT_CHANNEL;
2546                         page->audio.port[2].channels = 0;
2547                         page->audio.port[3].channels = 0;
2548                         error = cdsetmode(periph, &params);
2549                         kfree(params.mode_buf, M_SCSICD);
2550                         cam_periph_unlock(periph);
2551                 }
2552                 break;
2553         case CDIOCSETMUTE:
2554                 {
2555                         struct cd_mode_params params;
2556                         union cd_pages *page;
2557
2558                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2559                         params.mode_buf = kmalloc(params.alloc_len, M_SCSICD,
2560                                                  M_WAITOK | M_ZERO);
2561
2562                         cam_periph_lock(periph);
2563                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2564                                   ("trying to do CDIOCSETMUTE\n"));
2565
2566                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2567                         if (error) {
2568                                 kfree(&params, M_SCSICD);
2569                                 cam_periph_unlock(periph);
2570                                 break;
2571                         }
2572                         page = cdgetpage(&params);
2573
2574                         page->audio.port[LEFT_PORT].channels = 0;
2575                         page->audio.port[RIGHT_PORT].channels = 0;
2576                         page->audio.port[2].channels = 0;
2577                         page->audio.port[3].channels = 0;
2578                         error = cdsetmode(periph, &params);
2579                         kfree(params.mode_buf, M_SCSICD);
2580                         cam_periph_unlock(periph);
2581                 }
2582                 break;
2583         case CDIOCSETLEFT:
2584                 {
2585                         struct cd_mode_params params;
2586                         union cd_pages *page;
2587
2588                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2589                         params.mode_buf = kmalloc(params.alloc_len, M_SCSICD,
2590                                                  M_WAITOK | M_ZERO);
2591
2592                         cam_periph_lock(periph);
2593                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2594                                   ("trying to do CDIOCSETLEFT\n"));
2595
2596                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2597                         if (error) {
2598                                 kfree(params.mode_buf, M_SCSICD);
2599                                 cam_periph_unlock(periph);
2600                                 break;
2601                         }
2602                         page = cdgetpage(&params);
2603
2604                         page->audio.port[LEFT_PORT].channels = LEFT_CHANNEL;
2605                         page->audio.port[RIGHT_PORT].channels = LEFT_CHANNEL;
2606                         page->audio.port[2].channels = 0;
2607                         page->audio.port[3].channels = 0;
2608                         error = cdsetmode(periph, &params);
2609                         kfree(params.mode_buf, M_SCSICD);
2610                         cam_periph_unlock(periph);
2611                 }
2612                 break;
2613         case CDIOCSETRIGHT:
2614                 {
2615                         struct cd_mode_params params;
2616                         union cd_pages *page;
2617
2618                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2619                         params.mode_buf = kmalloc(params.alloc_len, M_SCSICD,
2620                                                  M_WAITOK | M_ZERO);
2621
2622                         cam_periph_lock(periph);
2623                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2624                                   ("trying to do CDIOCSETRIGHT\n"));
2625
2626                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2627                         if (error) {
2628                                 kfree(params.mode_buf, M_SCSICD);
2629                                 cam_periph_unlock(periph);
2630                                 break;
2631                         }
2632                         page = cdgetpage(&params);
2633
2634                         page->audio.port[LEFT_PORT].channels = RIGHT_CHANNEL;
2635                         page->audio.port[RIGHT_PORT].channels = RIGHT_CHANNEL;
2636                         page->audio.port[2].channels = 0;
2637                         page->audio.port[3].channels = 0;
2638                         error = cdsetmode(periph, &params);
2639                         kfree(params.mode_buf, M_SCSICD);
2640                         cam_periph_unlock(periph);
2641                 }
2642                 break;
2643         case CDIOCRESUME:
2644                 cam_periph_lock(periph);
2645                 error = cdpause(periph, 1);
2646                 cam_periph_unlock(periph);
2647                 break;
2648         case CDIOCPAUSE:
2649                 cam_periph_lock(periph);
2650                 error = cdpause(periph, 0);
2651                 cam_periph_unlock(periph);
2652                 break;
2653         case CDIOCSTART:
2654                 cam_periph_lock(periph);
2655                 error = cdstartunit(periph, 0);
2656                 cam_periph_unlock(periph);
2657                 break;
2658         case CDIOCCLOSE:
2659                 cam_periph_lock(periph);
2660                 error = cdstartunit(periph, 1);
2661                 cam_periph_unlock(periph);
2662                 break;
2663         case CDIOCSTOP:
2664                 cam_periph_lock(periph);
2665                 error = cdstopunit(periph, 0);
2666                 cam_periph_unlock(periph);
2667                 break;
2668         case CDIOCEJECT:
2669                 cam_periph_lock(periph);
2670                 error = cdstopunit(periph, 1);
2671                 cam_periph_unlock(periph);
2672                 break;
2673         case CDIOCALLOW:
2674                 cam_periph_lock(periph);
2675                 cdprevent(periph, PR_ALLOW);
2676                 cam_periph_unlock(periph);
2677                 break;
2678         case CDIOCPREVENT:
2679                 cam_periph_lock(periph);
2680                 cdprevent(periph, PR_PREVENT);
2681                 cam_periph_unlock(periph);
2682                 break;
2683         case CDIOCSETDEBUG:
2684                 /* sc_link->flags |= (SDEV_DB1 | SDEV_DB2); */
2685                 error = ENOTTY;
2686                 break;
2687         case CDIOCCLRDEBUG:
2688                 /* sc_link->flags &= ~(SDEV_DB1 | SDEV_DB2); */
2689                 error = ENOTTY;
2690                 break;
2691         case CDIOCRESET:
2692                 /* return (cd_reset(periph)); */
2693                 error = ENOTTY;
2694                 break;
2695         case CDRIOCREADSPEED:
2696                 cam_periph_lock(periph);
2697                 error = cdsetspeed(periph, *(u_int32_t *)addr, CDR_MAX_SPEED);
2698                 cam_periph_unlock(periph);
2699                 break;
2700         case CDRIOCWRITESPEED:
2701                 cam_periph_lock(periph);
2702                 error = cdsetspeed(periph, CDR_MAX_SPEED, *(u_int32_t *)addr);
2703                 cam_periph_unlock(periph);
2704                 break;
2705         case DVDIOCSENDKEY:
2706         case DVDIOCREPORTKEY: {
2707                 struct dvd_authinfo *authinfo;
2708
2709                 authinfo = (struct dvd_authinfo *)addr;
2710
2711                 cam_periph_lock(periph);
2712                 if (ap->a_cmd == DVDIOCREPORTKEY)
2713                         error = cdreportkey(periph, authinfo);
2714                 else
2715                         error = cdsendkey(periph, authinfo);
2716                 cam_periph_unlock(periph);
2717                 break;
2718         }
2719         case DVDIOCREADSTRUCTURE: {
2720                 struct dvd_struct *dvdstruct;
2721
2722                 dvdstruct = (struct dvd_struct *)addr;
2723
2724                 cam_periph_lock(periph);
2725                 error = cdreaddvdstructure(periph, dvdstruct);
2726                 cam_periph_unlock(periph);
2727
2728                 break;
2729         }
2730         default:
2731                 cam_periph_lock(periph);
2732                 error = cam_periph_ioctl(periph, ap->a_cmd, addr, cderror);
2733                 cam_periph_unlock(periph);
2734                 break;
2735         }
2736
2737         cam_periph_lock(periph);
2738         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("leaving cdioctl\n"));
2739         cam_periph_unhold(periph, 1);
2740
2741         return (error);
2742 }
2743
2744 static void
2745 cdprevent(struct cam_periph *periph, int action)
2746 {
2747         union   ccb *ccb;
2748         struct  cd_softc *softc;
2749         int     error;
2750
2751         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("entering cdprevent\n"));
2752
2753         softc = (struct cd_softc *)periph->softc;
2754
2755         if (((action == PR_ALLOW)
2756           && (softc->flags & CD_FLAG_DISC_LOCKED) == 0)
2757          || ((action == PR_PREVENT)
2758           && (softc->flags & CD_FLAG_DISC_LOCKED) != 0)) {
2759                 return;
2760         }
2761
2762         ccb = cdgetccb(periph, /* priority */ 1);
2763
2764         scsi_prevent(&ccb->csio,
2765                      /*retries*/ 1,
2766                      cddone,
2767                      MSG_SIMPLE_Q_TAG,
2768                      action,
2769                      SSD_FULL_SIZE,
2770                      /* timeout */60000);
2771
2772         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
2773                         /*sense_flags*/SF_RETRY_UA|SF_NO_PRINT);
2774
2775         xpt_release_ccb(ccb);
2776
2777         if (error == 0) {
2778                 if (action == PR_ALLOW)
2779                         softc->flags &= ~CD_FLAG_DISC_LOCKED;
2780                 else
2781                         softc->flags |= CD_FLAG_DISC_LOCKED;
2782         }
2783 }
2784
2785 int
2786 cdcheckmedia(struct cam_periph *periph)
2787 {
2788         struct cd_softc *softc;
2789         struct ioc_toc_header *toch;
2790         struct cd_toc_single leadout;
2791         struct ccb_getdev cgd;
2792         u_int32_t size, toclen;
2793         int error, num_entries, cdindex;
2794         int first_track_audio;
2795         struct disk_info info;
2796
2797         softc = (struct cd_softc *)periph->softc;
2798
2799         first_track_audio = -1;
2800         error = 0;
2801
2802         cdprevent(periph, PR_PREVENT);
2803
2804         /*
2805          * Set up disk info fields and tell the disk subsystem to reset
2806          * its internal copy of the label.
2807          */
2808         bzero(&info, sizeof(info));
2809         info.d_type = DTYPE_SCSI;
2810         info.d_dsflags &= ~DSO_COMPATLABEL;
2811         info.d_dsflags |= DSO_NOLABELS | DSO_COMPATPARTA;
2812         info.d_serialno = xpt_path_serialno(periph->path);
2813
2814         /*
2815          * Grab the inquiry data to get the vendor and product names.
2816          * Put them in the typename and packname for the label.
2817          */
2818         xpt_setup_ccb(&cgd.ccb_h, periph->path, /*priority*/ 1);
2819         cgd.ccb_h.func_code = XPT_GDEV_TYPE;
2820         xpt_action((union ccb *)&cgd);
2821
2822 #if 0
2823         strncpy(label->d_typename, cgd.inq_data.vendor,
2824                 min(SID_VENDOR_SIZE, sizeof(label->d_typename)));
2825         strncpy(label->d_packname, cgd.inq_data.product,
2826                 min(SID_PRODUCT_SIZE, sizeof(label->d_packname)));
2827 #endif
2828         /*
2829          * Clear the valid media and TOC flags until we've verified that we
2830          * have both.
2831          */
2832         softc->flags &= ~(CD_FLAG_VALID_MEDIA|CD_FLAG_VALID_TOC);
2833
2834         /*
2835          * Get the disc size and block size.  If we can't get it, we don't
2836          * have media, most likely.
2837          */
2838         if ((error = cdsize(periph, &size)) != 0) {
2839                 /*
2840                  * Set a bogus sector size, so the slice code won't try to
2841                  * divide by 0 and panic the kernel.
2842                  */
2843                 info.d_media_blksize = 2048;
2844                 disk_setdiskinfo(&softc->disk, &info);
2845
2846                 /*
2847                  * Tell devstat(9) we don't have a blocksize.
2848                  */
2849                 softc->device_stats.flags |= DEVSTAT_BS_UNAVAILABLE;
2850
2851                 cdprevent(periph, PR_ALLOW);
2852
2853                 return (error);
2854         } else {
2855                 info.d_media_blksize = softc->params.blksize;
2856                 info.d_media_blocks = softc->params.disksize;
2857                 disk_setdiskinfo(&softc->disk, &info);
2858
2859                 /*
2860                  * We unconditionally (re)set the blocksize each time the
2861                  * CD device is opened.  This is because the CD can change,
2862                  * and therefore the blocksize might change.
2863                  * XXX problems here if some slice or partition is still
2864                  * open with the old size?
2865                  */
2866                 if ((softc->device_stats.flags & DEVSTAT_BS_UNAVAILABLE) != 0)
2867                         softc->device_stats.flags &= ~DEVSTAT_BS_UNAVAILABLE;
2868                 softc->device_stats.block_size = softc->params.blksize;
2869
2870                 softc->flags |= CD_FLAG_VALID_MEDIA;
2871         }
2872
2873         /*
2874          * Now we check the table of contents.  This (currently) is only
2875          * used for the CDIOCPLAYTRACKS ioctl.  It may be used later to do
2876          * things like present a separate entry in /dev for each track,
2877          * like that acd(4) driver does.
2878          */
2879         bzero(&softc->toc, sizeof(softc->toc));
2880         toch = &softc->toc.header;
2881
2882         /*
2883          * We will get errors here for media that doesn't have a table of
2884          * contents.  According to the MMC-3 spec: "When a Read TOC/PMA/ATIP
2885          * command is presented for a DDCD/CD-R/RW media, where the first TOC
2886          * has not been recorded (no complete session) and the Format codes
2887          * 0000b, 0001b, or 0010b are specified, this command shall be rejected
2888          * with an INVALID FIELD IN CDB.  Devices that are not capable of
2889          * reading an incomplete session on DDC/CD-R/RW media shall report
2890          * CANNOT READ MEDIUM - INCOMPATIBLE FORMAT."
2891          *
2892          * So this isn't fatal if we can't read the table of contents, it
2893          * just means that the user won't be able to issue the play tracks
2894          * ioctl, and likely lots of other stuff won't work either.  They
2895          * need to burn the CD before we can do a whole lot with it.  So
2896          * we don't print anything here if we get an error back.
2897          */
2898         error = cdreadtoc(periph, 0, 0, (u_int8_t *)toch, sizeof(*toch),
2899                           SF_NO_PRINT);
2900         /*
2901          * Errors in reading the table of contents aren't fatal, we just
2902          * won't have a valid table of contents cached.
2903          */
2904         if (error != 0) {
2905                 error = 0;
2906                 bzero(&softc->toc, sizeof(softc->toc));
2907                 goto bailout;
2908         }
2909
2910         if (softc->quirks & CD_Q_BCD_TRACKS) {
2911                 toch->starting_track = bcd2bin(toch->starting_track);
2912                 toch->ending_track = bcd2bin(toch->ending_track);
2913         }
2914
2915         /* Number of TOC entries, plus leadout */
2916         num_entries = (toch->ending_track - toch->starting_track) + 2;
2917
2918         if (num_entries <= 0)
2919                 goto bailout;
2920
2921         toclen = num_entries * sizeof(struct cd_toc_entry);
2922
2923         error = cdreadtoc(periph, CD_MSF_FORMAT, toch->starting_track,
2924                           (u_int8_t *)&softc->toc, toclen + sizeof(*toch),
2925                           SF_NO_PRINT);
2926         if (error != 0) {
2927                 error = 0;
2928                 bzero(&softc->toc, sizeof(softc->toc));
2929                 goto bailout;
2930         }
2931
2932         if (softc->quirks & CD_Q_BCD_TRACKS) {
2933                 toch->starting_track = bcd2bin(toch->starting_track);
2934                 toch->ending_track = bcd2bin(toch->ending_track);
2935         }
2936         toch->len = scsi_2btoul((uint8_t *)&toch->len);
2937
2938         /*
2939          * XXX KDM is this necessary?  Probably only if the drive doesn't
2940          * return leadout information with the table of contents.
2941          */
2942         cdindex = toch->starting_track + num_entries -1;
2943         if (cdindex == toch->ending_track + 1) {
2944
2945                 error = cdreadtoc(periph, CD_MSF_FORMAT, LEADOUT,
2946                                   (u_int8_t *)&leadout, sizeof(leadout),
2947                                   SF_NO_PRINT);
2948                 if (error != 0) {
2949                         error = 0;
2950                         goto bailout;
2951                 }
2952                 softc->toc.entries[cdindex - toch->starting_track] =
2953                         leadout.entry;
2954         }
2955         if (softc->quirks & CD_Q_BCD_TRACKS) {
2956                 for (cdindex = 0; cdindex < (num_entries - 1); cdindex++) {
2957                         softc->toc.entries[cdindex].track =
2958                                 bcd2bin(softc->toc.entries[cdindex].track);
2959                 }
2960         }
2961
2962         /*
2963          * Run through the TOC entries, find the first entry and determine
2964          * whether it is an audio or data track.
2965          */
2966         for (cdindex = 0; cdindex < (num_entries - 1); cdindex++) {
2967                 if (softc->toc.entries[cdindex].track == toch->starting_track) {
2968                         if (softc->toc.entries[cdindex].control & 0x04)
2969                                 first_track_audio = 0;
2970                         else
2971                                 first_track_audio = 1;
2972                         break;
2973                 }
2974         }
2975
2976         /*
2977          * If first_track_audio is non-zero, we either have an error (e.g.
2978          * couldn't find the starting track) or the first track is an audio
2979          * track.  If first_track_audio is 0, the first track is a data
2980          * track that could have a disklabel.  Attempt to read the
2981          * disklabel off the media, just in case the user put one there.
2982          */
2983         if (first_track_audio == 0) {
2984                 info.d_dsflags |= DSO_COMPATLABEL;
2985                 info.d_dsflags &= ~DSO_NOLABELS;
2986                 disk_setdiskinfo(&softc->disk, &info);
2987         }
2988         softc->flags |= CD_FLAG_VALID_TOC;
2989
2990 bailout:
2991         return (error);
2992 }
2993
2994 static int
2995 cdsize(struct cam_periph *periph, u_int32_t *size)
2996 {
2997         struct cd_softc *softc;
2998         union ccb *ccb;
2999         struct scsi_read_capacity_data *rcap_buf;
3000         int error;
3001
3002         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("entering cdsize\n"));
3003
3004         softc = (struct cd_softc *)periph->softc;
3005
3006         ccb = cdgetccb(periph, /* priority */ 1);
3007
3008         rcap_buf = kmalloc(sizeof(struct scsi_read_capacity_data),
3009                           M_SCSICD, M_INTWAIT | M_ZERO);
3010
3011         scsi_read_capacity(&ccb->csio,
3012                            /*retries*/ 1,
3013                            cddone,
3014                            MSG_SIMPLE_Q_TAG,
3015                            rcap_buf,
3016                            SSD_FULL_SIZE,
3017                            /* timeout */20000);
3018
3019         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3020                          /*sense_flags*/SF_RETRY_UA|SF_NO_PRINT);
3021
3022         xpt_release_ccb(ccb);
3023
3024         softc->params.disksize = scsi_4btoul(rcap_buf->addr) + 1;
3025         softc->params.blksize  = scsi_4btoul(rcap_buf->length);
3026         /*
3027          * SCSI-3 mandates that the reported blocksize shall be 2048.
3028          * Older drives sometimes report funny values, trim it down to
3029          * 2048, or other parts of the kernel will get confused.
3030          *
3031          * XXX we leave drives alone that might report 512 bytes, as
3032          * well as drives reporting more weird sizes like perhaps 4K.
3033          */
3034         if (softc->params.blksize > 2048 && softc->params.blksize <= 2352)
3035                 softc->params.blksize = 2048;
3036
3037         kfree(rcap_buf, M_SCSICD);
3038         *size = softc->params.disksize;
3039
3040         return (error);
3041
3042 }
3043
3044 static int
3045 cd6byteworkaround(union ccb *ccb)
3046 {
3047         u_int8_t *cdb;
3048         struct cam_periph *periph;
3049         struct cd_softc *softc;
3050         struct cd_mode_params *params;
3051         int frozen, found;
3052
3053         periph = xpt_path_periph(ccb->ccb_h.path);
3054         softc = (struct cd_softc *)periph->softc;
3055
3056         cdb = ccb->csio.cdb_io.cdb_bytes;
3057
3058         if ((ccb->ccb_h.flags & CAM_CDB_POINTER)
3059          || ((cdb[0] != MODE_SENSE_6)
3060           && (cdb[0] != MODE_SELECT_6)))
3061                 return (0);
3062
3063         /*
3064          * Because there is no convenient place to stash the overall
3065          * cd_mode_params structure pointer, we have to grab it like this.
3066          * This means that ALL MODE_SENSE and MODE_SELECT requests in the
3067          * cd(4) driver MUST go through cdgetmode() and cdsetmode()!
3068          *
3069          * XXX It would be nice if, at some point, we could increase the
3070          * number of available peripheral private pointers.  Both pointers
3071          * are currently used in most every peripheral driver.
3072          */
3073         found = 0;
3074
3075         STAILQ_FOREACH(params, &softc->mode_queue, links) {
3076                 if (params->mode_buf == ccb->csio.data_ptr) {
3077                         found = 1;
3078                         break;
3079                 }
3080         }
3081
3082         /*
3083          * This shouldn't happen.  All mode sense and mode select
3084          * operations in the cd(4) driver MUST go through cdgetmode() and
3085          * cdsetmode()!
3086          */
3087         if (found == 0) {
3088                 xpt_print(periph->path,
3089                     "mode buffer not found in mode queue!\n");
3090                 return (0);
3091         }
3092
3093         params->cdb_size = 10;
3094         softc->minimum_command_size = 10;
3095         xpt_print(ccb->ccb_h.path,
3096             "%s(6) failed, increasing minimum CDB size to 10 bytes\n",
3097             (cdb[0] == MODE_SENSE_6) ? "MODE_SENSE" : "MODE_SELECT");
3098
3099         if (cdb[0] == MODE_SENSE_6) {
3100                 struct scsi_mode_sense_10 ms10;
3101                 struct scsi_mode_sense_6 *ms6;
3102                 int len;
3103
3104                 ms6 = (struct scsi_mode_sense_6 *)cdb;
3105
3106                 bzero(&ms10, sizeof(ms10));
3107                 ms10.opcode = MODE_SENSE_10;
3108                 ms10.byte2 = ms6->byte2;
3109                 ms10.page = ms6->page;
3110
3111                 /*
3112                  * 10 byte mode header, block descriptor,
3113                  * sizeof(union cd_pages)
3114                  */
3115                 len = sizeof(struct cd_mode_data_10);
3116                 ccb->csio.dxfer_len = len;
3117
3118                 scsi_ulto2b(len, ms10.length);
3119                 ms10.control = ms6->control;
3120                 bcopy(&ms10, cdb, 10);
3121                 ccb->csio.cdb_len = 10;
3122         } else {
3123                 struct scsi_mode_select_10 ms10;
3124                 struct scsi_mode_select_6 *ms6;
3125                 struct scsi_mode_header_6 *header6;
3126                 struct scsi_mode_header_10 *header10;
3127                 struct scsi_mode_page_header *page_header;
3128                 int blk_desc_len, page_num, page_size, len;
3129
3130                 ms6 = (struct scsi_mode_select_6 *)cdb;
3131
3132                 bzero(&ms10, sizeof(ms10));
3133                 ms10.opcode = MODE_SELECT_10;
3134                 ms10.byte2 = ms6->byte2;
3135
3136                 header6 = (struct scsi_mode_header_6 *)params->mode_buf;
3137                 header10 = (struct scsi_mode_header_10 *)params->mode_buf;
3138
3139                 page_header = find_mode_page_6(header6);
3140                 page_num = page_header->page_code;
3141
3142                 blk_desc_len = header6->blk_desc_len;
3143
3144                 page_size = cdgetpagesize(page_num);
3145
3146                 if (page_size != (page_header->page_length +
3147                     sizeof(*page_header)))
3148                         page_size = page_header->page_length +
3149                                 sizeof(*page_header);
3150
3151                 len = sizeof(*header10) + blk_desc_len + page_size;
3152
3153                 len = min(params->alloc_len, len);
3154
3155                 /*
3156                  * Since the 6 byte parameter header is shorter than the 10
3157                  * byte parameter header, we need to copy the actual mode
3158                  * page data, and the block descriptor, if any, so things wind
3159                  * up in the right place.  The regions will overlap, but
3160                  * bcopy() does the right thing.
3161                  */
3162                 bcopy(params->mode_buf + sizeof(*header6),
3163                       params->mode_buf + sizeof(*header10),
3164                       len - sizeof(*header10));
3165
3166                 /* Make sure these fields are set correctly. */
3167                 scsi_ulto2b(0, header10->data_length);
3168                 header10->medium_type = 0;
3169                 scsi_ulto2b(blk_desc_len, header10->blk_desc_len);
3170
3171                 ccb->csio.dxfer_len = len;
3172
3173                 scsi_ulto2b(len, ms10.length);
3174                 ms10.control = ms6->control;
3175                 bcopy(&ms10, cdb, 10);
3176                 ccb->csio.cdb_len = 10;
3177         }
3178
3179         frozen = (ccb->ccb_h.status & CAM_DEV_QFRZN) != 0;
3180         ccb->ccb_h.status = CAM_REQUEUE_REQ;
3181         xpt_action(ccb);
3182         if (frozen) {
3183                 cam_release_devq(ccb->ccb_h.path,
3184                                  /*relsim_flags*/0,
3185                                  /*openings*/0,
3186                                  /*timeout*/0,
3187                                  /*getcount_only*/0);
3188         }
3189
3190         return (ERESTART);
3191 }
3192
3193 static int
3194 cderror(union ccb *ccb, u_int32_t cam_flags, u_int32_t sense_flags)
3195 {
3196         struct cd_softc *softc;
3197         struct cam_periph *periph;
3198         int error;
3199
3200         periph = xpt_path_periph(ccb->ccb_h.path);
3201         softc = (struct cd_softc *)periph->softc;
3202
3203         error = 0;
3204
3205         /*
3206          * We use a status of CAM_REQ_INVALID as shorthand -- if a 6 byte
3207          * CDB comes back with this particular error, try transforming it
3208          * into the 10 byte version.
3209          */
3210         if ((ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_INVALID) {
3211                 error = cd6byteworkaround(ccb);
3212         } else if (((ccb->ccb_h.status & CAM_STATUS_MASK) ==
3213                      CAM_SCSI_STATUS_ERROR)
3214          && (ccb->ccb_h.status & CAM_AUTOSNS_VALID)
3215          && (ccb->csio.scsi_status == SCSI_STATUS_CHECK_COND)
3216          && ((ccb->ccb_h.flags & CAM_SENSE_PHYS) == 0)
3217          && ((ccb->ccb_h.flags & CAM_SENSE_PTR) == 0)) {
3218                 int sense_key, error_code, asc, ascq;
3219
3220                 scsi_extract_sense(&ccb->csio.sense_data,
3221                                    &error_code, &sense_key, &asc, &ascq);
3222                 if (sense_key == SSD_KEY_ILLEGAL_REQUEST)
3223                         error = cd6byteworkaround(ccb);
3224         }
3225
3226         if (error == ERESTART)
3227                 return (error);
3228
3229         /*
3230          * XXX
3231          * Until we have a better way of doing pack validation,
3232          * don't treat UAs as errors.
3233          */
3234         sense_flags |= SF_RETRY_UA;
3235         return (cam_periph_error(ccb, cam_flags, sense_flags,
3236                                  &softc->saved_ccb));
3237 }
3238
3239 /*
3240  * Read table of contents
3241  */
3242 static int
3243 cdreadtoc(struct cam_periph *periph, u_int32_t mode, u_int32_t start,
3244           u_int8_t *data, u_int32_t len, u_int32_t sense_flags)
3245 {
3246         struct scsi_read_toc *scsi_cmd;
3247         u_int32_t ntoc;
3248         struct ccb_scsiio *csio;
3249         union ccb *ccb;
3250         int error;
3251
3252         ntoc = len;
3253         error = 0;
3254
3255         ccb = cdgetccb(periph, /* priority */ 1);
3256
3257         csio = &ccb->csio;
3258
3259         cam_fill_csio(csio,
3260                       /* retries */ 1,
3261                       /* cbfcnp */ cddone,
3262                       /* flags */ CAM_DIR_IN,
3263                       /* tag_action */ MSG_SIMPLE_Q_TAG,
3264                       /* data_ptr */ data,
3265                       /* dxfer_len */ len,
3266                       /* sense_len */ SSD_FULL_SIZE,
3267                       sizeof(struct scsi_read_toc),
3268                       /* timeout */ 50000);
3269
3270         scsi_cmd = (struct scsi_read_toc *)&csio->cdb_io.cdb_bytes;
3271         bzero (scsi_cmd, sizeof(*scsi_cmd));
3272
3273         if (mode == CD_MSF_FORMAT)
3274                 scsi_cmd->byte2 |= CD_MSF;
3275         scsi_cmd->from_track = start;
3276         /* scsi_ulto2b(ntoc, (u_int8_t *)scsi_cmd->data_len); */
3277         scsi_cmd->data_len[0] = (ntoc) >> 8;
3278         scsi_cmd->data_len[1] = (ntoc) & 0xff;
3279
3280         scsi_cmd->op_code = READ_TOC;
3281
3282         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3283                          /*sense_flags*/SF_RETRY_UA | sense_flags);
3284
3285         xpt_release_ccb(ccb);
3286
3287         return(error);
3288 }
3289
3290 static int
3291 cdreadsubchannel(struct cam_periph *periph, u_int32_t mode,
3292                  u_int32_t format, int track,
3293                  struct cd_sub_channel_info *data, u_int32_t len)
3294 {
3295         struct scsi_read_subchannel *scsi_cmd;
3296         struct ccb_scsiio *csio;
3297         union ccb *ccb;
3298         int error;
3299
3300         error = 0;
3301
3302         ccb = cdgetccb(periph, /* priority */ 1);
3303
3304         csio = &ccb->csio;
3305
3306         cam_fill_csio(csio,
3307                       /* retries */ 1,
3308                       /* cbfcnp */ cddone,
3309                       /* flags */ CAM_DIR_IN,
3310                       /* tag_action */ MSG_SIMPLE_Q_TAG,
3311                       /* data_ptr */ (u_int8_t *)data,
3312                       /* dxfer_len */ len,
3313                       /* sense_len */ SSD_FULL_SIZE,
3314                       sizeof(struct scsi_read_subchannel),
3315                       /* timeout */ 50000);
3316
3317         scsi_cmd = (struct scsi_read_subchannel *)&csio->cdb_io.cdb_bytes;
3318         bzero (scsi_cmd, sizeof(*scsi_cmd));
3319
3320         scsi_cmd->op_code = READ_SUBCHANNEL;
3321         if (mode == CD_MSF_FORMAT)
3322                 scsi_cmd->byte1 |= CD_MSF;
3323         scsi_cmd->byte2 = SRS_SUBQ;
3324         scsi_cmd->subchan_format = format;
3325         scsi_cmd->track = track;
3326         scsi_ulto2b(len, (u_int8_t *)scsi_cmd->data_len);
3327         scsi_cmd->control = 0;
3328
3329         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3330                          /*sense_flags*/SF_RETRY_UA);
3331
3332         xpt_release_ccb(ccb);
3333
3334         return(error);
3335 }
3336
3337 /*
3338  * All MODE_SENSE requests in the cd(4) driver MUST go through this
3339  * routine.  See comments in cd6byteworkaround() for details.
3340  */
3341 static int
3342 cdgetmode(struct cam_periph *periph, struct cd_mode_params *data,
3343           u_int32_t page)
3344 {
3345         struct ccb_scsiio *csio;
3346         struct cd_softc *softc;
3347         union ccb *ccb;
3348         int param_len;
3349         int error;
3350
3351         softc = (struct cd_softc *)periph->softc;
3352
3353         ccb = cdgetccb(periph, /* priority */ 1);
3354
3355         csio = &ccb->csio;
3356
3357         data->cdb_size = softc->minimum_command_size;
3358         if (data->cdb_size < 10)
3359                 param_len = sizeof(struct cd_mode_data);
3360         else
3361                 param_len = sizeof(struct cd_mode_data_10);
3362
3363         /* Don't say we've got more room than we actually allocated */
3364         param_len = min(param_len, data->alloc_len);
3365
3366         scsi_mode_sense_len(csio,
3367                             /* retries */ 1,
3368                             /* cbfcnp */ cddone,
3369                             /* tag_action */ MSG_SIMPLE_Q_TAG,
3370                             /* dbd */ 0,
3371                             /* page_code */ SMS_PAGE_CTRL_CURRENT,
3372                             /* page */ page,
3373                             /* param_buf */ data->mode_buf,
3374                             /* param_len */ param_len,
3375                             /* minimum_cmd_size */ softc->minimum_command_size,
3376                             /* sense_len */ SSD_FULL_SIZE,
3377                             /* timeout */ 50000);
3378
3379         /*
3380          * It would be nice not to have to do this, but there's no
3381          * available pointer in the CCB that would allow us to stuff the
3382          * mode params structure in there and retrieve it in
3383          * cd6byteworkaround(), so we can set the cdb size.  The cdb size
3384          * lets the caller know what CDB size we ended up using, so they
3385          * can find the actual mode page offset.
3386          */
3387         STAILQ_INSERT_TAIL(&softc->mode_queue, data, links);
3388
3389         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3390                          /*sense_flags*/SF_RETRY_UA);
3391
3392         xpt_release_ccb(ccb);
3393
3394         STAILQ_REMOVE(&softc->mode_queue, data, cd_mode_params, links);
3395
3396         /*
3397          * This is a bit of belt-and-suspenders checking, but if we run
3398          * into a situation where the target sends back multiple block
3399          * descriptors, we might not have enough space in the buffer to
3400          * see the whole mode page.  Better to return an error than
3401          * potentially access memory beyond our malloced region.
3402          */
3403         if (error == 0) {
3404                 u_int32_t data_len;
3405
3406                 if (data->cdb_size == 10) {
3407                         struct scsi_mode_header_10 *hdr10;
3408
3409                         hdr10 = (struct scsi_mode_header_10 *)data->mode_buf;
3410                         data_len = scsi_2btoul(hdr10->data_length);
3411                         data_len += sizeof(hdr10->data_length);
3412                 } else {
3413                         struct scsi_mode_header_6 *hdr6;
3414
3415                         hdr6 = (struct scsi_mode_header_6 *)data->mode_buf;
3416                         data_len = hdr6->data_length;
3417                         data_len += sizeof(hdr6->data_length);
3418                 }
3419
3420                 /*
3421                  * Complain if there is more mode data available than we
3422                  * allocated space for.  This could potentially happen if
3423                  * we miscalculated the page length for some reason, if the
3424                  * drive returns multiple block descriptors, or if it sets
3425                  * the data length incorrectly.
3426                  */
3427                 if (data_len > data->alloc_len) {
3428                         xpt_print(periph->path, "allocated modepage %d length "
3429                             "%d < returned length %d\n", page, data->alloc_len,
3430                             data_len);
3431                         error = ENOSPC;
3432                 }
3433         }
3434         return (error);
3435 }
3436
3437 /*
3438  * All MODE_SELECT requests in the cd(4) driver MUST go through this
3439  * routine.  See comments in cd6byteworkaround() for details.
3440  */
3441 static int
3442 cdsetmode(struct cam_periph *periph, struct cd_mode_params *data)
3443 {
3444         struct ccb_scsiio *csio;
3445         struct cd_softc *softc;
3446         union ccb *ccb;
3447         int cdb_size, param_len;
3448         int error;
3449
3450         softc = (struct cd_softc *)periph->softc;
3451
3452         ccb = cdgetccb(periph, /* priority */ 1);
3453
3454         csio = &ccb->csio;
3455
3456         error = 0;
3457
3458         /*
3459          * If the data is formatted for the 10 byte version of the mode
3460          * select parameter list, we need to use the 10 byte CDB.
3461          * Otherwise, we use whatever the stored minimum command size.
3462          */
3463         if (data->cdb_size == 10)
3464                 cdb_size = data->cdb_size;
3465         else
3466                 cdb_size = softc->minimum_command_size;
3467
3468         if (cdb_size >= 10) {
3469                 struct scsi_mode_header_10 *mode_header;
3470                 u_int32_t data_len;
3471
3472                 mode_header = (struct scsi_mode_header_10 *)data->mode_buf;
3473
3474                 data_len = scsi_2btoul(mode_header->data_length);
3475
3476                 scsi_ulto2b(0, mode_header->data_length);
3477                 /*
3478                  * SONY drives do not allow a mode select with a medium_type
3479                  * value that has just been returned by a mode sense; use a
3480                  * medium_type of 0 (Default) instead.
3481                  */
3482                 mode_header->medium_type = 0;
3483
3484                 /*
3485                  * Pass back whatever the drive passed to us, plus the size
3486                  * of the data length field.
3487                  */
3488                 param_len = data_len + sizeof(mode_header->data_length);
3489
3490         } else {
3491                 struct scsi_mode_header_6 *mode_header;
3492
3493                 mode_header = (struct scsi_mode_header_6 *)data->mode_buf;
3494
3495                 param_len = mode_header->data_length + 1;
3496
3497                 mode_header->data_length = 0;
3498                 /*
3499                  * SONY drives do not allow a mode select with a medium_type
3500                  * value that has just been returned by a mode sense; use a
3501                  * medium_type of 0 (Default) instead.
3502                  */
3503                 mode_header->medium_type = 0;
3504         }
3505
3506         /* Don't say we've got more room than we actually allocated */
3507         param_len = min(param_len, data->alloc_len);
3508
3509         scsi_mode_select_len(csio,
3510                              /* retries */ 1,
3511                              /* cbfcnp */ cddone,
3512                              /* tag_action */ MSG_SIMPLE_Q_TAG,
3513                              /* scsi_page_fmt */ 1,
3514                              /* save_pages */ 0,
3515                              /* param_buf */ data->mode_buf,
3516                              /* param_len */ param_len,
3517                              /* minimum_cmd_size */ cdb_size,
3518                              /* sense_len */ SSD_FULL_SIZE,
3519                              /* timeout */ 50000);
3520
3521         /* See comments in cdgetmode() and cd6byteworkaround(). */
3522         STAILQ_INSERT_TAIL(&softc->mode_queue, data, links);
3523
3524         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3525                          /*sense_flags*/SF_RETRY_UA);
3526
3527         xpt_release_ccb(ccb);
3528
3529         STAILQ_REMOVE(&softc->mode_queue, data, cd_mode_params, links);
3530
3531         return (error);
3532 }
3533
3534
3535
3536 static int
3537 cdplay(struct cam_periph *periph, u_int32_t blk, u_int32_t len)
3538 {
3539         struct ccb_scsiio *csio;
3540         union ccb *ccb;
3541         int error;
3542         u_int8_t cdb_len;
3543
3544         error = 0;
3545         ccb = cdgetccb(periph, /* priority */ 1);
3546         csio = &ccb->csio;
3547         /*
3548          * Use the smallest possible command to perform the operation.
3549          */
3550         if ((len & 0xffff0000) == 0) {
3551                 /*
3552                  * We can fit in a 10 byte cdb.
3553                  */
3554                 struct scsi_play_10 *scsi_cmd;
3555
3556                 scsi_cmd = (struct scsi_play_10 *)&csio->cdb_io.cdb_bytes;
3557                 bzero (scsi_cmd, sizeof(*scsi_cmd));
3558                 scsi_cmd->op_code = PLAY_10;
3559                 scsi_ulto4b(blk, (u_int8_t *)scsi_cmd->blk_addr);
3560                 scsi_ulto2b(len, (u_int8_t *)scsi_cmd->xfer_len);
3561                 cdb_len = sizeof(*scsi_cmd);
3562         } else  {
3563                 struct scsi_play_12 *scsi_cmd;
3564
3565                 scsi_cmd = (struct scsi_play_12 *)&csio->cdb_io.cdb_bytes;
3566                 bzero (scsi_cmd, sizeof(*scsi_cmd));
3567                 scsi_cmd->op_code = PLAY_12;
3568                 scsi_ulto4b(blk, (u_int8_t *)scsi_cmd->blk_addr);
3569                 scsi_ulto4b(len, (u_int8_t *)scsi_cmd->xfer_len);
3570                 cdb_len = sizeof(*scsi_cmd);
3571         }
3572         cam_fill_csio(csio,
3573                       /*retries*/2,
3574                       cddone,
3575                       /*flags*/CAM_DIR_NONE,
3576                       MSG_SIMPLE_Q_TAG,
3577                       /*dataptr*/NULL,
3578                       /*datalen*/0,
3579                       /*sense_len*/SSD_FULL_SIZE,
3580                       cdb_len,
3581                       /*timeout*/50 * 1000);
3582
3583         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3584                          /*sense_flags*/SF_RETRY_UA);
3585
3586         xpt_release_ccb(ccb);
3587
3588         return(error);
3589 }
3590
3591 static int
3592 cdplaymsf(struct cam_periph *periph, u_int32_t startm, u_int32_t starts,
3593           u_int32_t startf, u_int32_t endm, u_int32_t ends, u_int32_t endf)
3594 {
3595         struct scsi_play_msf *scsi_cmd;
3596         struct ccb_scsiio *csio;
3597         union ccb *ccb;
3598         int error;
3599
3600         error = 0;
3601
3602         ccb = cdgetccb(periph, /* priority */ 1);
3603
3604         csio = &ccb->csio;
3605
3606         cam_fill_csio(csio,
3607                       /* retries */ 1,
3608                       /* cbfcnp */ cddone,
3609                       /* flags */ CAM_DIR_NONE,
3610                       /* tag_action */ MSG_SIMPLE_Q_TAG,
3611                       /* data_ptr */ NULL,
3612                       /* dxfer_len */ 0,
3613                       /* sense_len */ SSD_FULL_SIZE,
3614                       sizeof(struct scsi_play_msf),
3615                       /* timeout */ 50000);
3616
3617         scsi_cmd = (struct scsi_play_msf *)&csio->cdb_io.cdb_bytes;
3618         bzero (scsi_cmd, sizeof(*scsi_cmd));
3619
3620         scsi_cmd->op_code = PLAY_MSF;
3621         scsi_cmd->start_m = startm;
3622         scsi_cmd->start_s = starts;
3623         scsi_cmd->start_f = startf;
3624         scsi_cmd->end_m = endm;
3625         scsi_cmd->end_s = ends;
3626         scsi_cmd->end_f = endf;
3627
3628         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3629                          /*sense_flags*/SF_RETRY_UA);
3630
3631         xpt_release_ccb(ccb);
3632
3633         return(error);
3634 }
3635
3636
3637 static int
3638 cdplaytracks(struct cam_periph *periph, u_int32_t strack, u_int32_t sindex,
3639              u_int32_t etrack, u_int32_t eindex)
3640 {
3641         struct scsi_play_track *scsi_cmd;
3642         struct ccb_scsiio *csio;
3643         union ccb *ccb;
3644         int error;
3645
3646         error = 0;
3647
3648         ccb = cdgetccb(periph, /* priority */ 1);
3649
3650         csio = &ccb->csio;
3651
3652         cam_fill_csio(csio,
3653                       /* retries */ 1,
3654                       /* cbfcnp */ cddone,
3655                       /* flags */ CAM_DIR_NONE,
3656                       /* tag_action */ MSG_SIMPLE_Q_TAG,
3657                       /* data_ptr */ NULL,
3658                       /* dxfer_len */ 0,
3659                       /* sense_len */ SSD_FULL_SIZE,
3660                       sizeof(struct scsi_play_track),
3661                       /* timeout */ 50000);
3662
3663         scsi_cmd = (struct scsi_play_track *)&csio->cdb_io.cdb_bytes;
3664         bzero (scsi_cmd, sizeof(*scsi_cmd));
3665
3666         scsi_cmd->op_code = PLAY_TRACK;
3667         scsi_cmd->start_track = strack;
3668         scsi_cmd->start_index = sindex;
3669         scsi_cmd->end_track = etrack;
3670         scsi_cmd->end_index = eindex;
3671
3672         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3673                          /*sense_flags*/SF_RETRY_UA);
3674
3675         xpt_release_ccb(ccb);
3676
3677         return(error);
3678 }
3679
3680 static int
3681 cdpause(struct cam_periph *periph, u_int32_t go)
3682 {
3683         struct scsi_pause *scsi_cmd;
3684         struct ccb_scsiio *csio;
3685         union ccb *ccb;
3686         int error;
3687
3688         error = 0;
3689
3690         ccb = cdgetccb(periph, /* priority */ 1);
3691
3692         csio = &ccb->csio;
3693
3694         cam_fill_csio(csio,
3695                       /* retries */ 1,
3696                       /* cbfcnp */ cddone,
3697                       /* flags */ CAM_DIR_NONE,
3698                       /* tag_action */ MSG_SIMPLE_Q_TAG,
3699                       /* data_ptr */ NULL,
3700                       /* dxfer_len */ 0,
3701                       /* sense_len */ SSD_FULL_SIZE,
3702                       sizeof(struct scsi_pause),
3703                       /* timeout */ 50000);
3704
3705         scsi_cmd = (struct scsi_pause *)&csio->cdb_io.cdb_bytes;
3706         bzero (scsi_cmd, sizeof(*scsi_cmd));
3707
3708         scsi_cmd->op_code = PAUSE;
3709         scsi_cmd->resume = go;
3710
3711         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3712                          /*sense_flags*/SF_RETRY_UA);
3713
3714         xpt_release_ccb(ccb);
3715
3716         return(error);
3717 }
3718
3719 static int
3720 cdstartunit(struct cam_periph *periph, int load)
3721 {
3722         union ccb *ccb;
3723         int error;
3724
3725         error = 0;
3726
3727         ccb = cdgetccb(periph, /* priority */ 1);
3728
3729         scsi_start_stop(&ccb->csio,
3730                         /* retries */ 1,
3731                         /* cbfcnp */ cddone,
3732                         /* tag_action */ MSG_SIMPLE_Q_TAG,
3733                         /* start */ TRUE,
3734                         /* load_eject */ load,
3735                         /* immediate */ FALSE,
3736                         /* sense_len */ SSD_FULL_SIZE,
3737                         /* timeout */ 50000);
3738
3739         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3740                          /*sense_flags*/SF_RETRY_UA);
3741
3742         xpt_release_ccb(ccb);
3743
3744         return(error);
3745 }
3746
3747 static int
3748 cdstopunit(struct cam_periph *periph, u_int32_t eject)
3749 {
3750         union ccb *ccb;
3751         int error;
3752
3753         error = 0;
3754
3755         ccb = cdgetccb(periph, /* priority */ 1);
3756
3757         scsi_start_stop(&ccb->csio,
3758                         /* retries */ 1,
3759                         /* cbfcnp */ cddone,
3760                         /* tag_action */ MSG_SIMPLE_Q_TAG,
3761                         /* start */ FALSE,
3762                         /* load_eject */ eject,
3763                         /* immediate */ FALSE,
3764                         /* sense_len */ SSD_FULL_SIZE,
3765                         /* timeout */ 50000);
3766
3767         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3768                          /*sense_flags*/SF_RETRY_UA);
3769
3770         xpt_release_ccb(ccb);
3771
3772         return(error);
3773 }
3774
3775 static int
3776 cdsetspeed(struct cam_periph *periph, u_int32_t rdspeed, u_int32_t wrspeed)
3777 {
3778         struct scsi_set_speed *scsi_cmd;
3779         struct ccb_scsiio *csio;
3780         union ccb *ccb;
3781         int error;
3782
3783         error = 0;
3784         ccb = cdgetccb(periph, /* priority */ 1);
3785         csio = &ccb->csio;
3786
3787         /* Preserve old behavior: units in multiples of CDROM speed */
3788         if (rdspeed < 177)
3789                 rdspeed *= 177;
3790         if (wrspeed < 177)
3791                 wrspeed *= 177;
3792
3793         cam_fill_csio(csio,
3794                       /* retries */ 1,
3795                       /* cbfcnp */ cddone,
3796                       /* flags */ CAM_DIR_NONE,
3797                       /* tag_action */ MSG_SIMPLE_Q_TAG,
3798                       /* data_ptr */ NULL,
3799                       /* dxfer_len */ 0,
3800                       /* sense_len */ SSD_FULL_SIZE,
3801                       sizeof(struct scsi_set_speed),
3802                       /* timeout */ 50000);
3803
3804         scsi_cmd = (struct scsi_set_speed *)&csio->cdb_io.cdb_bytes;
3805         bzero(scsi_cmd, sizeof(*scsi_cmd));
3806
3807         scsi_cmd->opcode = SET_CD_SPEED;
3808         scsi_ulto2b(rdspeed, scsi_cmd->readspeed);
3809         scsi_ulto2b(wrspeed, scsi_cmd->writespeed);
3810
3811         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3812                          /*sense_flags*/SF_RETRY_UA);
3813
3814         xpt_release_ccb(ccb);
3815
3816         return(error);
3817 }
3818
3819 static int
3820 cdreportkey(struct cam_periph *periph, struct dvd_authinfo *authinfo)
3821 {
3822         union ccb *ccb;
3823         u_int8_t *databuf;
3824         u_int32_t lba;
3825         int error;
3826         int length;
3827
3828         error = 0;
3829         databuf = NULL;
3830         lba = 0;
3831
3832         ccb = cdgetccb(periph, /* priority */ 1);
3833
3834         switch (authinfo->format) {
3835         case DVD_REPORT_AGID:
3836                 length = sizeof(struct scsi_report_key_data_agid);
3837                 break;
3838         case DVD_REPORT_CHALLENGE:
3839                 length = sizeof(struct scsi_report_key_data_challenge);
3840                 break;
3841         case DVD_REPORT_KEY1:
3842                 length = sizeof(struct scsi_report_key_data_key1_key2);
3843                 break;
3844         case DVD_REPORT_TITLE_KEY:
3845                 length = sizeof(struct scsi_report_key_data_title);
3846                 /* The lba field is only set for the title key */
3847                 lba = authinfo->lba;
3848                 break;
3849         case DVD_REPORT_ASF:
3850                 length = sizeof(struct scsi_report_key_data_asf);
3851                 break;
3852         case DVD_REPORT_RPC:
3853                 length = sizeof(struct scsi_report_key_data_rpc);
3854                 break;
3855         case DVD_INVALIDATE_AGID:
3856                 length = 0;
3857                 break;
3858         default:
3859                 error = EINVAL;
3860                 goto bailout;
3861                 break; /* NOTREACHED */
3862         }
3863
3864         if (length != 0) {
3865                 databuf = kmalloc(length, M_DEVBUF, M_INTWAIT | M_ZERO);
3866         } else {
3867                 databuf = NULL;
3868         }
3869
3870
3871         scsi_report_key(&ccb->csio,
3872                         /* retries */ 1,
3873                         /* cbfcnp */ cddone,
3874                         /* tag_action */ MSG_SIMPLE_Q_TAG,
3875                         /* lba */ lba,
3876                         /* agid */ authinfo->agid,
3877                         /* key_format */ authinfo->format,
3878                         /* data_ptr */ databuf,
3879                         /* dxfer_len */ length,
3880                         /* sense_len */ SSD_FULL_SIZE,
3881                         /* timeout */ 50000);
3882
3883         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3884                          /*sense_flags*/SF_RETRY_UA);
3885
3886         if (error != 0)
3887                 goto bailout;
3888
3889         if (ccb->csio.resid != 0) {
3890                 xpt_print(periph->path, "warning, residual for report key "
3891                     "command is %d\n", ccb->csio.resid);
3892         }
3893
3894         switch(authinfo->format) {
3895         case DVD_REPORT_AGID: {
3896                 struct scsi_report_key_data_agid *agid_data;
3897
3898                 agid_data = (struct scsi_report_key_data_agid *)databuf;
3899
3900                 authinfo->agid = (agid_data->agid & RKD_AGID_MASK) >>
3901                         RKD_AGID_SHIFT;
3902                 break;
3903         }
3904         case DVD_REPORT_CHALLENGE: {
3905                 struct scsi_report_key_data_challenge *chal_data;
3906
3907                 chal_data = (struct scsi_report_key_data_challenge *)databuf;
3908
3909                 bcopy(chal_data->challenge_key, authinfo->keychal,
3910                       min(sizeof(chal_data->challenge_key),
3911                           sizeof(authinfo->keychal)));
3912                 break;
3913         }
3914         case DVD_REPORT_KEY1: {
3915                 struct scsi_report_key_data_key1_key2 *key1_data;
3916
3917                 key1_data = (struct scsi_report_key_data_key1_key2 *)databuf;
3918
3919                 bcopy(key1_data->key1, authinfo->keychal,
3920                       min(sizeof(key1_data->key1), sizeof(authinfo->keychal)));
3921                 break;
3922         }
3923         case DVD_REPORT_TITLE_KEY: {
3924                 struct scsi_report_key_data_title *title_data;
3925
3926                 title_data = (struct scsi_report_key_data_title *)databuf;
3927
3928                 authinfo->cpm = (title_data->byte0 & RKD_TITLE_CPM) >>
3929                         RKD_TITLE_CPM_SHIFT;
3930                 authinfo->cp_sec = (title_data->byte0 & RKD_TITLE_CP_SEC) >>
3931                         RKD_TITLE_CP_SEC_SHIFT;
3932                 authinfo->cgms = (title_data->byte0 & RKD_TITLE_CMGS_MASK) >>
3933                         RKD_TITLE_CMGS_SHIFT;
3934                 bcopy(title_data->title_key, authinfo->keychal,
3935                       min(sizeof(title_data->title_key),
3936                           sizeof(authinfo->keychal)));
3937                 break;
3938         }
3939         case DVD_REPORT_ASF: {
3940                 struct scsi_report_key_data_asf *asf_data;
3941
3942                 asf_data = (struct scsi_report_key_data_asf *)databuf;
3943
3944                 authinfo->asf = asf_data->success & RKD_ASF_SUCCESS;
3945                 break;
3946         }
3947         case DVD_REPORT_RPC: {
3948                 struct scsi_report_key_data_rpc *rpc_data;
3949
3950                 rpc_data = (struct scsi_report_key_data_rpc *)databuf;
3951
3952                 authinfo->reg_type = (rpc_data->byte4 & RKD_RPC_TYPE_MASK) >>
3953                         RKD_RPC_TYPE_SHIFT;
3954                 authinfo->vend_rsts =
3955                         (rpc_data->byte4 & RKD_RPC_VENDOR_RESET_MASK) >>
3956                         RKD_RPC_VENDOR_RESET_SHIFT;
3957                 authinfo->user_rsts = rpc_data->byte4 & RKD_RPC_USER_RESET_MASK;
3958                 authinfo->region = rpc_data->region_mask;
3959                 authinfo->rpc_scheme = rpc_data->rpc_scheme1;
3960                 break;
3961         }
3962         case DVD_INVALIDATE_AGID:
3963                 break;
3964         default:
3965                 /* This should be impossible, since we checked above */
3966                 error = EINVAL;
3967                 goto bailout;
3968                 break; /* NOTREACHED */
3969         }
3970 bailout:
3971         if (databuf != NULL)
3972                 kfree(databuf, M_DEVBUF);
3973
3974         xpt_release_ccb(ccb);
3975
3976         return(error);
3977 }
3978
3979 static int
3980 cdsendkey(struct cam_periph *periph, struct dvd_authinfo *authinfo)
3981 {
3982         union ccb *ccb;
3983         u_int8_t *databuf;
3984         int length;
3985         int error;
3986
3987         error = 0;
3988         databuf = NULL;
3989
3990         ccb = cdgetccb(periph, /* priority */ 1);
3991
3992         switch(authinfo->format) {
3993         case DVD_SEND_CHALLENGE: {
3994                 struct scsi_report_key_data_challenge *challenge_data;
3995
3996                 length = sizeof(*challenge_data);
3997
3998                 challenge_data = kmalloc(length, M_DEVBUF, M_INTWAIT | M_ZERO);
3999
4000                 databuf = (u_int8_t *)challenge_data;
4001
4002                 scsi_ulto2b(length - sizeof(challenge_data->data_len),
4003                             challenge_data->data_len);
4004
4005                 bcopy(authinfo->keychal, challenge_data->challenge_key,
4006                       min(sizeof(authinfo->keychal),
4007                           sizeof(challenge_data->challenge_key)));
4008                 break;
4009         }
4010         case DVD_SEND_KEY2: {
4011                 struct scsi_report_key_data_key1_key2 *key2_data;
4012
4013                 length = sizeof(*key2_data);
4014
4015                 key2_data = kmalloc(length, M_DEVBUF, M_INTWAIT | M_ZERO);
4016
4017                 databuf = (u_int8_t *)key2_data;
4018
4019                 scsi_ulto2b(length - sizeof(key2_data->data_len),
4020                             key2_data->data_len);
4021
4022                 bcopy(authinfo->keychal, key2_data->key1,
4023                       min(sizeof(authinfo->keychal), sizeof(key2_data->key1)));
4024
4025                 break;
4026         }
4027         case DVD_SEND_RPC: {
4028                 struct scsi_send_key_data_rpc *rpc_data;
4029
4030                 length = sizeof(*rpc_data);
4031
4032                 rpc_data = kmalloc(length, M_DEVBUF, M_INTWAIT | M_ZERO);
4033
4034                 databuf = (u_int8_t *)rpc_data;
4035
4036                 scsi_ulto2b(length - sizeof(rpc_data->data_len),
4037                             rpc_data->data_len);
4038
4039                 rpc_data->region_code = authinfo->region;
4040                 break;
4041         }
4042         default:
4043                 error = EINVAL;
4044                 goto bailout;
4045                 break; /* NOTREACHED */
4046         }
4047
4048         scsi_send_key(&ccb->csio,
4049                       /* retries */ 1,
4050                       /* cbfcnp */ cddone,
4051                       /* tag_action */ MSG_SIMPLE_Q_TAG,
4052                       /* agid */ authinfo->agid,
4053                       /* key_format */ authinfo->format,
4054                       /* data_ptr */ databuf,
4055                       /* dxfer_len */ length,
4056                       /* sense_len */ SSD_FULL_SIZE,
4057                       /* timeout */ 50000);
4058
4059         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
4060                          /*sense_flags*/SF_RETRY_UA);
4061
4062 bailout:
4063
4064         if (databuf != NULL)
4065                 kfree(databuf, M_DEVBUF);
4066
4067         xpt_release_ccb(ccb);
4068
4069         return(error);
4070 }
4071
4072 static int
4073 cdreaddvdstructure(struct cam_periph *periph, struct dvd_struct *dvdstruct)
4074 {
4075         union ccb *ccb;
4076         u_int8_t *databuf;
4077         u_int32_t address;
4078         int error;
4079         int length;
4080
4081         error = 0;
4082         databuf = NULL;
4083         /* The address is reserved for many of the formats */
4084         address = 0;
4085
4086         ccb = cdgetccb(periph, /* priority */ 1);
4087
4088         switch(dvdstruct->format) {
4089         case DVD_STRUCT_PHYSICAL:
4090                 length = sizeof(struct scsi_read_dvd_struct_data_physical);
4091                 break;
4092         case DVD_STRUCT_COPYRIGHT:
4093                 length = sizeof(struct scsi_read_dvd_struct_data_copyright);
4094                 break;
4095         case DVD_STRUCT_DISCKEY:
4096                 length = sizeof(struct scsi_read_dvd_struct_data_disc_key);
4097                 break;
4098         case DVD_STRUCT_BCA:
4099                 length = sizeof(struct scsi_read_dvd_struct_data_bca);
4100                 break;
4101         case DVD_STRUCT_MANUFACT:
4102                 length = sizeof(struct scsi_read_dvd_struct_data_manufacturer);
4103                 break;
4104         case DVD_STRUCT_CMI:
4105                 error = ENODEV;
4106                 goto bailout;
4107 #ifdef notyet
4108                 length = sizeof(struct scsi_read_dvd_struct_data_copy_manage);
4109                 address = dvdstruct->address;
4110 #endif
4111                 break; /* NOTREACHED */
4112         case DVD_STRUCT_PROTDISCID:
4113                 length = sizeof(struct scsi_read_dvd_struct_data_prot_discid);
4114                 break;
4115         case DVD_STRUCT_DISCKEYBLOCK:
4116                 length = sizeof(struct scsi_read_dvd_struct_data_disc_key_blk);
4117                 break;
4118         case DVD_STRUCT_DDS:
4119                 length = sizeof(struct scsi_read_dvd_struct_data_dds);
4120                 break;
4121         case DVD_STRUCT_MEDIUM_STAT:
4122                 length = sizeof(struct scsi_read_dvd_struct_data_medium_status);
4123                 break;
4124         case DVD_STRUCT_SPARE_AREA:
4125                 length = sizeof(struct scsi_read_dvd_struct_data_spare_area);
4126                 break;
4127         case DVD_STRUCT_RMD_LAST:
4128                 error = ENODEV;
4129                 goto bailout;
4130 #ifdef notyet
4131                 length = sizeof(struct scsi_read_dvd_struct_data_rmd_borderout);
4132                 address = dvdstruct->address;
4133 #endif
4134                 break; /* NOTREACHED */
4135         case DVD_STRUCT_RMD_RMA:
4136                 error = ENODEV;
4137                 goto bailout;
4138 #ifdef notyet
4139                 length = sizeof(struct scsi_read_dvd_struct_data_rmd);
4140                 address = dvdstruct->address;
4141 #endif
4142                 break; /* NOTREACHED */
4143         case DVD_STRUCT_PRERECORDED:
4144                 length = sizeof(struct scsi_read_dvd_struct_data_leadin);
4145                 break;
4146         case DVD_STRUCT_UNIQUEID:
4147                 length = sizeof(struct scsi_read_dvd_struct_data_disc_id);
4148                 break;
4149         case DVD_STRUCT_DCB:
4150                 error = ENODEV;
4151                 goto bailout;
4152 #ifdef notyet
4153                 length = sizeof(struct scsi_read_dvd_struct_data_dcb);
4154                 address = dvdstruct->address;
4155 #endif
4156                 break; /* NOTREACHED */
4157         case DVD_STRUCT_LIST:
4158                 /*
4159                  * This is the maximum allocation length for the READ DVD
4160                  * STRUCTURE command.  There's nothing in the MMC3 spec
4161                  * that indicates a limit in the amount of data that can
4162                  * be returned from this call, other than the limits
4163                  * imposed by the 2-byte length variables.
4164                  */
4165                 length = 65535;
4166                 break;
4167         default:
4168                 error = EINVAL;
4169                 goto bailout;
4170                 break; /* NOTREACHED */
4171         }
4172
4173         if (length != 0) {
4174                 databuf = kmalloc(length, M_DEVBUF, M_INTWAIT | M_ZERO);
4175         } else {
4176                 databuf = NULL;
4177         }
4178
4179         scsi_read_dvd_structure(&ccb->csio,
4180                                 /* retries */ 1,
4181                                 /* cbfcnp */ cddone,
4182                                 /* tag_action */ MSG_SIMPLE_Q_TAG,
4183                                 /* lba */ address,
4184                                 /* layer_number */ dvdstruct->layer_num,
4185                                 /* key_format */ dvdstruct->format,
4186                                 /* agid */ dvdstruct->agid,
4187                                 /* data_ptr */ databuf,
4188                                 /* dxfer_len */ length,
4189                                 /* sense_len */ SSD_FULL_SIZE,
4190                                 /* timeout */ 50000);
4191
4192         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
4193                          /*sense_flags*/SF_RETRY_UA);
4194
4195         if (error != 0)
4196                 goto bailout;
4197
4198         switch(dvdstruct->format) {
4199         case DVD_STRUCT_PHYSICAL: {
4200                 struct scsi_read_dvd_struct_data_layer_desc *inlayer;
4201                 struct dvd_layer *outlayer;
4202                 struct scsi_read_dvd_struct_data_physical *phys_data;
4203
4204                 phys_data =
4205                         (struct scsi_read_dvd_struct_data_physical *)databuf;
4206                 inlayer = &phys_data->layer_desc;
4207                 outlayer = (struct dvd_layer *)&dvdstruct->data;
4208
4209                 dvdstruct->length = sizeof(*inlayer);
4210
4211                 outlayer->book_type = (inlayer->book_type_version &
4212                         RDSD_BOOK_TYPE_MASK) >> RDSD_BOOK_TYPE_SHIFT;
4213                 outlayer->book_version = (inlayer->book_type_version &
4214                         RDSD_BOOK_VERSION_MASK);
4215                 outlayer->disc_size = (inlayer->disc_size_max_rate &
4216                         RDSD_DISC_SIZE_MASK) >> RDSD_DISC_SIZE_SHIFT;
4217                 outlayer->max_rate = (inlayer->disc_size_max_rate &
4218                         RDSD_MAX_RATE_MASK);
4219                 outlayer->nlayers = (inlayer->layer_info &
4220                         RDSD_NUM_LAYERS_MASK) >> RDSD_NUM_LAYERS_SHIFT;
4221                 outlayer->track_path = (inlayer->layer_info &
4222                         RDSD_TRACK_PATH_MASK) >> RDSD_TRACK_PATH_SHIFT;
4223                 outlayer->layer_type = (inlayer->layer_info &
4224                         RDSD_LAYER_TYPE_MASK);
4225                 outlayer->linear_density = (inlayer->density &
4226                         RDSD_LIN_DENSITY_MASK) >> RDSD_LIN_DENSITY_SHIFT;
4227                 outlayer->track_density = (inlayer->density &
4228                         RDSD_TRACK_DENSITY_MASK);
4229                 outlayer->bca = (inlayer->bca & RDSD_BCA_MASK) >>
4230                         RDSD_BCA_SHIFT;
4231                 outlayer->start_sector = scsi_3btoul(inlayer->main_data_start);
4232                 outlayer->end_sector = scsi_3btoul(inlayer->main_data_end);
4233                 outlayer->end_sector_l0 =
4234                         scsi_3btoul(inlayer->end_sector_layer0);
4235                 break;
4236         }
4237         case DVD_STRUCT_COPYRIGHT: {
4238                 struct scsi_read_dvd_struct_data_copyright *copy_data;
4239
4240                 copy_data = (struct scsi_read_dvd_struct_data_copyright *)
4241                         databuf;
4242
4243                 dvdstruct->cpst = copy_data->cps_type;
4244                 dvdstruct->rmi = copy_data->region_info;
4245                 dvdstruct->length = 0;
4246
4247                 break;
4248         }
4249         default:
4250                 /*
4251                  * Tell the user what the overall length is, no matter
4252                  * what we can actually fit in the data buffer.
4253                  */
4254                 dvdstruct->length = length - ccb->csio.resid -
4255                         sizeof(struct scsi_read_dvd_struct_data_header);
4256
4257                 /*
4258                  * But only actually copy out the smaller of what we read
4259                  * in or what the structure can take.
4260                  */
4261                 bcopy(databuf + sizeof(struct scsi_read_dvd_struct_data_header),
4262                       dvdstruct->data,
4263                       min(sizeof(dvdstruct->data), dvdstruct->length));
4264                 break;
4265         }
4266 bailout:
4267
4268         if (databuf != NULL)
4269                 kfree(databuf, M_DEVBUF);
4270
4271         xpt_release_ccb(ccb);
4272
4273         return(error);
4274 }
4275
4276 void
4277 scsi_report_key(struct ccb_scsiio *csio, u_int32_t retries,
4278                 void (*cbfcnp)(struct cam_periph *, union ccb *),
4279                 u_int8_t tag_action, u_int32_t lba, u_int8_t agid,
4280                 u_int8_t key_format, u_int8_t *data_ptr, u_int32_t dxfer_len,
4281                 u_int8_t sense_len, u_int32_t timeout)
4282 {
4283         struct scsi_report_key *scsi_cmd;
4284
4285         scsi_cmd = (struct scsi_report_key *)&csio->cdb_io.cdb_bytes;
4286         bzero(scsi_cmd, sizeof(*scsi_cmd));
4287         scsi_cmd->opcode = REPORT_KEY;
4288         scsi_ulto4b(lba, scsi_cmd->lba);
4289         scsi_ulto2b(dxfer_len, scsi_cmd->alloc_len);
4290         scsi_cmd->agid_keyformat = (agid << RK_KF_AGID_SHIFT) |
4291                 (key_format & RK_KF_KEYFORMAT_MASK);
4292
4293         cam_fill_csio(csio,
4294                       retries,
4295                       cbfcnp,
4296                       /*flags*/ (dxfer_len == 0) ? CAM_DIR_NONE : CAM_DIR_IN,
4297                       tag_action,
4298                       /*data_ptr*/ data_ptr,
4299                       /*dxfer_len*/ dxfer_len,
4300                       sense_len,
4301                       sizeof(*scsi_cmd),
4302                       timeout);
4303 }
4304
4305 void
4306 scsi_send_key(struct ccb_scsiio *csio, u_int32_t retries,
4307               void (*cbfcnp)(struct cam_periph *, union ccb *),
4308               u_int8_t tag_action, u_int8_t agid, u_int8_t key_format,
4309               u_int8_t *data_ptr, u_int32_t dxfer_len, u_int8_t sense_len,
4310               u_int32_t timeout)
4311 {
4312         struct scsi_send_key *scsi_cmd;
4313
4314         scsi_cmd = (struct scsi_send_key *)&csio->cdb_io.cdb_bytes;
4315         bzero(scsi_cmd, sizeof(*scsi_cmd));
4316         scsi_cmd->opcode = SEND_KEY;
4317
4318         scsi_ulto2b(dxfer_len, scsi_cmd->param_len);
4319         scsi_cmd->agid_keyformat = (agid << RK_KF_AGID_SHIFT) |
4320                 (key_format & RK_KF_KEYFORMAT_MASK);
4321
4322         cam_fill_csio(csio,
4323                       retries,
4324                       cbfcnp,
4325                       /*flags*/ CAM_DIR_OUT,
4326                       tag_action,
4327                       /*data_ptr*/ data_ptr,
4328                       /*dxfer_len*/ dxfer_len,
4329                       sense_len,
4330                       sizeof(*scsi_cmd),
4331                       timeout);
4332 }
4333
4334
4335 void
4336 scsi_read_dvd_structure(struct ccb_scsiio *csio, u_int32_t retries,
4337                         void (*cbfcnp)(struct cam_periph *, union ccb *),
4338                         u_int8_t tag_action, u_int32_t address,
4339                         u_int8_t layer_number, u_int8_t format, u_int8_t agid,
4340                         u_int8_t *data_ptr, u_int32_t dxfer_len,
4341                         u_int8_t sense_len, u_int32_t timeout)
4342 {
4343         struct scsi_read_dvd_structure *scsi_cmd;
4344
4345         scsi_cmd = (struct scsi_read_dvd_structure *)&csio->cdb_io.cdb_bytes;
4346         bzero(scsi_cmd, sizeof(*scsi_cmd));
4347         scsi_cmd->opcode = READ_DVD_STRUCTURE;
4348
4349         scsi_ulto4b(address, scsi_cmd->address);
4350         scsi_cmd->layer_number = layer_number;
4351         scsi_cmd->format = format;
4352         scsi_ulto2b(dxfer_len, scsi_cmd->alloc_len);
4353         /* The AGID is the top two bits of this byte */
4354         scsi_cmd->agid = agid << 6;
4355
4356         cam_fill_csio(csio,
4357                       retries,
4358                       cbfcnp,
4359                       /*flags*/ CAM_DIR_IN,
4360                       tag_action,
4361                       /*data_ptr*/ data_ptr,
4362                       /*dxfer_len*/ dxfer_len,
4363                       sense_len,
4364                       sizeof(*scsi_cmd),
4365                       timeout);
4366 }