sys/bus/cam/scsi/scsi_cd.c

   1 /*
   2  * Copyright (c) 1997 Justin T. Gibbs.
   3  * Copyright (c) 1997, 1998, 1999, 2000, 2001, 2003, 2003 Kenneth D. Merry.
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions, and the following disclaimer,
  11  *    without modification, immediately at the beginning of the file.
  12  * 2. The name of the author may not be used to endorse or promote products
  13  *    derived from this software without specific prior written permission.
  14  *
  15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  16  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  17  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  18  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
  19  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  20  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  21  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  23  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  25  * SUCH DAMAGE.
  26  *
  27  * $FreeBSD: src/sys/cam/scsi/scsi_cd.c,v 1.31.2.16 2003/10/21 22:26:11 thomas Exp $
  28  * $DragonFly: src/sys/bus/cam/scsi/scsi_cd.c,v 1.44 2008/07/18 00:07:23 dillon Exp $
  29  */
  30 /*
  31  * Portions of this driver taken from the original FreeBSD cd driver.
  32  * Written by Julian Elischer (julian@tfs.com)
  33  * for TRW Financial Systems for use under the MACH(2.5) operating system.
  34  *
  35  * TRW Financial Systems, in accordance with their agreement with Carnegie
  36  * Mellon University, makes this software available to CMU to distribute
  37  * or use in any manner that they see fit as long as this message is kept with
  38  * the software. For this reason TFS also grants any other persons or
  39  * organisations permission to use or modify this software.
  40  *
  41  * TFS supplies this software to be publicly redistributed
  42  * on the understanding that TFS is not responsible for the correct
  43  * functioning of this software in any circumstances.
  44  *
  45  * Ported to run under 386BSD by Julian Elischer (julian@tfs.com) Sept 1992
  46  *
  47  *      from: cd.c,v 1.83 1997/05/04 15:24:22 joerg Exp $
  48  */
  49
  50 #include "opt_cd.h"
  51
  52 #include <sys/param.h>
  53 #include <sys/bootmaj.h>
  54 #include <sys/systm.h>
  55 #include <sys/kernel.h>
  56 #include <sys/buf.h>
  57 #include <sys/conf.h>
  58 #include <sys/disk.h>
  59 #include <sys/dtype.h>
  60 #include <sys/malloc.h>
  61 #include <sys/cdio.h>
  62 #include <sys/cdrio.h>
  63 #include <sys/dvdio.h>
  64 #include <sys/devicestat.h>
  65 #include <sys/sysctl.h>
  66 #include <sys/taskqueue.h>
  67 #include <sys/proc.h>
  68 #include <sys/buf2.h>
  69 #include <sys/thread2.h>
  70
  71 #include "../cam.h"
  72 #include "../cam_ccb.h"
  73 #include "../cam_extend.h"
  74 #include "../cam_periph.h"
  75 #include "../cam_xpt_periph.h"
  76 #include "../cam_queue.h"
  77 #include "../cam_sim.h"
  78
  79 #include "scsi_message.h"
  80 #include "scsi_da.h"
  81 #include "scsi_cd.h"
  82
  83 #define LEADOUT         0xaa            /* leadout toc entry */
  84
  85 struct cd_params {
  86         u_int32_t blksize;
  87         u_long    disksize;
  88 };
  89
  90 typedef enum {
  91         CD_Q_NONE               = 0x00,
  92         CD_Q_NO_TOUCH           = 0x01,
  93         CD_Q_BCD_TRACKS         = 0x02,
  94         CD_Q_NO_CHANGER         = 0x04,
  95         CD_Q_CHANGER            = 0x08,
  96         CD_Q_10_BYTE_ONLY       = 0x10
  97 } cd_quirks;
  98
  99 typedef enum {
 100         CD_FLAG_INVALID         = 0x0001,
 101         CD_FLAG_NEW_DISC        = 0x0002,
 102         CD_FLAG_DISC_LOCKED     = 0x0004,
 103         CD_FLAG_DISC_REMOVABLE  = 0x0008,
 104         CD_FLAG_TAGGED_QUEUING  = 0x0010,
 105         CD_FLAG_CHANGER         = 0x0040,
 106         CD_FLAG_ACTIVE          = 0x0080,
 107         CD_FLAG_SCHED_ON_COMP   = 0x0100,
 108         CD_FLAG_RETRY_UA        = 0x0200,
 109         CD_FLAG_VALID_MEDIA     = 0x0400,
 110         CD_FLAG_VALID_TOC       = 0x0800,
 111         CD_FLAG_SCTX_INIT       = 0x1000,
 112         CD_FLAG_OPEN            = 0x2000
 113 } cd_flags;
 114
 115 typedef enum {
 116         CD_CCB_PROBE            = 0x01,
 117         CD_CCB_BUFFER_IO        = 0x02,
 118         CD_CCB_WAITING          = 0x03,
 119         CD_CCB_TYPE_MASK        = 0x0F,
 120         CD_CCB_RETRY_UA         = 0x10
 121 } cd_ccb_state;
 122
 123 typedef enum {
 124         CHANGER_TIMEOUT_SCHED           = 0x01,
 125         CHANGER_SHORT_TMOUT_SCHED       = 0x02,
 126         CHANGER_MANUAL_CALL             = 0x04,
 127         CHANGER_NEED_TIMEOUT            = 0x08
 128 } cd_changer_flags;
 129
 130 #define ccb_state ppriv_field0
 131 #define ccb_bio ppriv_ptr1
 132
 133 struct cd_tocdata {
 134         struct ioc_toc_header header;
 135         struct cd_toc_entry entries[100];
 136 };
 137
 138 struct cd_toc_single {
 139         struct ioc_toc_header header;
 140         struct cd_toc_entry entry;
 141 };
 142
 143 typedef enum {
 144         CD_STATE_PROBE,
 145         CD_STATE_NORMAL
 146 } cd_state;
 147
 148 struct cd_softc {
 149         cam_pinfo               pinfo;
 150         cd_state                state;
 151         volatile cd_flags       flags;
 152         struct bio_queue_head   bio_queue;
 153         LIST_HEAD(, ccb_hdr)    pending_ccbs;
 154         struct cd_params        params;
 155         struct disk             disk;
 156         union ccb               saved_ccb;
 157         cd_quirks               quirks;
 158         struct devstat          device_stats;
 159         STAILQ_ENTRY(cd_softc)  changer_links;
 160         struct cdchanger        *changer;
 161         int                     bufs_left;
 162         struct cam_periph       *periph;
 163         int                     minimum_command_size;
 164         int                     outstanding_cmds;
 165         struct task             sysctl_task;
 166         struct sysctl_ctx_list  sysctl_ctx;
 167         struct sysctl_oid       *sysctl_tree;
 168         STAILQ_HEAD(, cd_mode_params)   mode_queue;
 169         struct cd_tocdata       toc;
 170 };
 171
 172 struct cd_page_sizes {
 173         int page;
 174         int page_size;
 175 };
 176
 177 static struct cd_page_sizes cd_page_size_table[] =
 178 {
 179         { AUDIO_PAGE, sizeof(struct cd_audio_page)}
 180 };
 181
 182 struct cd_quirk_entry {
 183         struct scsi_inquiry_pattern inq_pat;
 184         cd_quirks quirks;
 185 };
 186
 187 /*
 188  * The changer quirk entries aren't strictly necessary.  Basically, what
 189  * they do is tell cdregister() up front that a device is a changer.
 190  * Otherwise, it will figure that fact out once it sees a LUN on the device
 191  * that is greater than 0.  If it is known up front that a device is a changer,
 192  * all I/O to the device will go through the changer scheduling routines, as
 193  * opposed to the "normal" CD code.
 194  *
 195  * NOTE ON 10_BYTE_ONLY quirks:  Any 10_BYTE_ONLY quirks MUST be because
 196  * your device hangs when it gets a 10 byte command.  Adding a quirk just
 197  * to get rid of the informative diagnostic message is not acceptable.  All
 198  * 10_BYTE_ONLY quirks must be documented in full in a PR (which should be
 199  * referenced in a comment along with the quirk) , and must be approved by
 200  * ken@FreeBSD.org.  Any quirks added that don't adhere to this policy may
 201  * be removed until the submitter can explain why they are needed.
 202  * 10_BYTE_ONLY quirks will be removed (as they will no longer be necessary)
 203  * when the CAM_NEW_TRAN_CODE work is done.
 204  */
 205 static struct cd_quirk_entry cd_quirk_table[] =
 206 {
 207         {
 208                 { T_CDROM, SIP_MEDIA_REMOVABLE, "NRC", "MBR-7", "*"},
 209                  /*quirks*/ CD_Q_CHANGER
 210         },
 211         {
 212                 { T_CDROM, SIP_MEDIA_REMOVABLE, "PIONEER", "CD-ROM DRM*",
 213                   "*"}, /* quirks */ CD_Q_CHANGER
 214         },
 215         {
 216                 { T_CDROM, SIP_MEDIA_REMOVABLE, "NAKAMICH", "MJ-*", "*"},
 217                  /* quirks */ CD_Q_CHANGER
 218         },
 219         {
 220                 { T_CDROM, SIP_MEDIA_REMOVABLE, "CHINON", "CD-ROM CDS-535","*"},
 221                 /* quirks */ CD_Q_BCD_TRACKS
 222         }
 223 };
 224
 225 static  d_open_t        cdopen;
 226 static  d_close_t       cdclose;
 227 static  d_ioctl_t       cdioctl;
 228 static  d_strategy_t    cdstrategy;
 229
 230 static  periph_init_t   cdinit;
 231 static  periph_ctor_t   cdregister;
 232 static  periph_dtor_t   cdcleanup;
 233 static  periph_start_t  cdstart;
 234 static  periph_oninv_t  cdoninvalidate;
 235 static  void            cdasync(void *callback_arg, u_int32_t code,
 236                                 struct cam_path *path, void *arg);
 237 static  int             cdcmdsizesysctl(SYSCTL_HANDLER_ARGS);
 238 static  void            cdshorttimeout(void *arg);
 239 static  void            cdschedule(struct cam_periph *periph, int priority);
 240 static  void            cdrunchangerqueue(void *arg);
 241 static  void            cdchangerschedule(struct cd_softc *softc);
 242 static  int             cdrunccb(union ccb *ccb,
 243                                  int (*error_routine)(union ccb *ccb,
 244                                                       u_int32_t cam_flags,
 245                                                       u_int32_t sense_flags),
 246                                  u_int32_t cam_flags, u_int32_t sense_flags);
 247 static union    ccb     *cdgetccb(struct cam_periph *periph,
 248                                   u_int32_t priority);
 249 static  void            cddone(struct cam_periph *periph,
 250                                union ccb *start_ccb);
 251 static  int             cderror(union ccb *ccb, u_int32_t cam_flags,
 252                                 u_int32_t sense_flags);
 253 static  union cd_pages  *cdgetpage(struct cd_mode_params *mode_params);
 254 static  int             cdgetpagesize(int page_num);
 255 static  void            cdprevent(struct cam_periph *periph, int action);
 256 static  int             cdcheckmedia(struct cam_periph *periph);
 257 static  int             cdsize(struct cam_periph *periph, u_int32_t *size);
 258 static  int             cd6byteworkaround(union ccb *ccb);
 259 static  int             cdreadtoc(struct cam_periph *periph, u_int32_t mode,
 260                                   u_int32_t start, u_int8_t *data,
 261                                   u_int32_t len, u_int32_t sense_flags);
 262 static  int             cdgetmode(struct cam_periph *periph,
 263                                   struct cd_mode_params *data, u_int32_t page);
 264 static  int             cdsetmode(struct cam_periph *periph,
 265                                   struct cd_mode_params *data);
 266 static  int             cdplay(struct cam_periph *periph, u_int32_t blk,
 267                                u_int32_t len);
 268 static  int             cdreadsubchannel(struct cam_periph *periph,
 269                                          u_int32_t mode, u_int32_t format,
 270                                          int track,
 271                                          struct cd_sub_channel_info *data,
 272                                          u_int32_t len);
 273 static  int             cdplaymsf(struct cam_periph *periph, u_int32_t startm,
 274                                   u_int32_t starts, u_int32_t startf,
 275                                   u_int32_t endm, u_int32_t ends,
 276                                   u_int32_t endf);
 277 static  int             cdplaytracks(struct cam_periph *periph,
 278                                      u_int32_t strack, u_int32_t sindex,
 279                                      u_int32_t etrack, u_int32_t eindex);
 280 static  int             cdpause(struct cam_periph *periph, u_int32_t go);
 281 static  int             cdstopunit(struct cam_periph *periph, u_int32_t eject);
 282 static  int             cdstartunit(struct cam_periph *periph, int load);
 283 static  int             cdsetspeed(struct cam_periph *periph,
 284                                    u_int32_t rdspeed, u_int32_t wrspeed);
 285 static  int             cdreportkey(struct cam_periph *periph,
 286                                     struct dvd_authinfo *authinfo);
 287 static  int             cdsendkey(struct cam_periph *periph,
 288                                   struct dvd_authinfo *authinfo);
 289 static  int             cdreaddvdstructure(struct cam_periph *periph,
 290                                            struct dvd_struct *dvdstruct);
 291
 292 static struct periph_driver cddriver =
 293 {
 294         cdinit, "cd",
 295         TAILQ_HEAD_INITIALIZER(cddriver.units), /* generation */ 0
 296 };
 297
 298 PERIPHDRIVER_DECLARE(cd, cddriver);
 299
 300 static struct dev_ops cd_ops = {
 301         { "cd", SCSICD_CDEV_MAJOR, D_DISK },
 302         .d_open = cdopen,
 303         .d_close = cdclose,
 304         .d_read = physread,
 305         .d_write = physwrite,
 306         .d_ioctl = cdioctl,
 307         .d_strategy = cdstrategy
 308 };
 309
 310 static struct extend_array *cdperiphs;
 311
 312 #ifndef CHANGER_MIN_BUSY_SECONDS
 313 #define CHANGER_MIN_BUSY_SECONDS        5
 314 #endif
 315 #ifndef CHANGER_MAX_BUSY_SECONDS
 316 #define CHANGER_MAX_BUSY_SECONDS        15
 317 #endif
 318
 319 static int changer_min_busy_seconds = CHANGER_MIN_BUSY_SECONDS;
 320 static int changer_max_busy_seconds = CHANGER_MAX_BUSY_SECONDS;
 321
 322 SYSCTL_NODE(_kern_cam, OID_AUTO, cd, CTLFLAG_RD, 0, "CAM CDROM driver");
 323 SYSCTL_NODE(_kern_cam_cd, OID_AUTO, changer, CTLFLAG_RD, 0, "CD Changer");
 324 SYSCTL_INT(_kern_cam_cd_changer, OID_AUTO, min_busy_seconds, CTLFLAG_RW,
 325            &changer_min_busy_seconds, 0, "Minimum changer scheduling quantum");
 326 TUNABLE_INT("kern.cam.cd.changer.min_busy_seconds", &changer_min_busy_seconds);
 327 SYSCTL_INT(_kern_cam_cd_changer, OID_AUTO, max_busy_seconds, CTLFLAG_RW,
 328            &changer_max_busy_seconds, 0, "Maximum changer scheduling quantum");
 329 TUNABLE_INT("kern.cam.cd.changer.max_busy_seconds", &changer_max_busy_seconds);
 330
 331 struct cdchanger {
 332         path_id_t                        path_id;
 333         target_id_t                      target_id;
 334         int                              num_devices;
 335         struct camq                      devq;
 336         struct timeval                   start_time;
 337         struct cd_softc                  *cur_device;
 338         struct callout                   short_handle;
 339         struct callout                   long_handle;
 340         volatile cd_changer_flags        flags;
 341         STAILQ_ENTRY(cdchanger)          changer_links;
 342         STAILQ_HEAD(chdevlist, cd_softc) chluns;
 343 };
 344
 345 static struct lock changerq_lock;
 346 static STAILQ_HEAD(changerlist, cdchanger) changerq;
 347 static int num_changers;
 348
 349 MALLOC_DEFINE(M_SCSICD, "scsi_cd", "scsi_cd buffers");
 350
 351 static void
 352 cdinit(void)
 353 {
 354         cam_status status;
 355
 356         lockinit(&changerq_lock, "cdchangerq", 0, LK_CANRECURSE);
 357         STAILQ_INIT(&changerq);
 358
 359         /*
 360          * Create our extend array for storing the devices we attach to.
 361          */
 362         cdperiphs = cam_extend_new();
 363         if (cdperiphs == NULL) {
 364                 kprintf("cd: Failed to alloc extend array!\n");
 365                 return;
 366         }
 367
 368         /*
 369          * Install a global async callback.  This callback will
 370          * receive async callbacks like "new device found".
 371          */
 372         status = xpt_register_async(AC_FOUND_DEVICE, cdasync, NULL, NULL);
 373
 374         if (status != CAM_REQ_CMP) {
 375                 kprintf("cd: Failed to attach master async callback "
 376                        "due to status 0x%x!\n", status);
 377         }
 378 }
 379
 380 static void
 381 cdoninvalidate(struct cam_periph *periph)
 382 {
 383         struct cd_softc *softc;
 384         struct buf *q_bp;
 385         struct bio *q_bio;
 386
 387         softc = (struct cd_softc *)periph->softc;
 388
 389         /*
 390          * De-register any async callbacks.
 391          */
 392         xpt_register_async(0, cdasync, periph, periph->path);
 393
 394         softc->flags |= CD_FLAG_INVALID;
 395
 396         /*
 397          * Return all queued I/O with ENXIO.
 398          * XXX Handle any transactions queued to the card
 399          *     with XPT_ABORT_CCB.
 400          */
 401         while ((q_bio = bioq_first(&softc->bio_queue)) != NULL){
 402                 bioq_remove(&softc->bio_queue, q_bio);
 403                 q_bp = q_bio->bio_buf;
 404                 q_bp->b_resid = q_bp->b_bcount;
 405                 q_bp->b_error = ENXIO;
 406                 q_bp->b_flags |= B_ERROR;
 407                 biodone(q_bio);
 408         }
 409
 410         /*
 411          * If this device is part of a changer, and it was scheduled
 412          * to run, remove it from the run queue since we just nuked
 413          * all of its scheduled I/O.
 414          */
 415         if ((softc->flags & CD_FLAG_CHANGER)
 416          && (softc->pinfo.index != CAM_UNQUEUED_INDEX))
 417                 camq_remove(&softc->changer->devq, softc->pinfo.index);
 418
 419         xpt_print(periph->path, "lost device\n");
 420 }
 421
 422 static void
 423 cdcleanup(struct cam_periph *periph)
 424 {
 425         struct cd_softc *softc;
 426
 427         softc = (struct cd_softc *)periph->softc;
 428
 429         xpt_print(periph->path, "removing device entry\n");
 430
 431         if ((softc->flags & CD_FLAG_SCTX_INIT) != 0
 432             && sysctl_ctx_free(&softc->sysctl_ctx) != 0) {
 433                 xpt_print(periph->path, "can't remove sysctl context\n");
 434         }
 435
 436         /*
 437          * In the queued, non-active case, the device in question
 438          * has already been removed from the changer run queue.  Since this
 439          * device is active, we need to de-activate it, and schedule
 440          * another device to run.  (if there is another one to run)
 441          */
 442         if ((softc->flags & CD_FLAG_CHANGER)
 443          && (softc->flags & CD_FLAG_ACTIVE)) {
 444
 445                 /*
 446                  * The purpose of the short timeout is soley to determine
 447                  * whether the current device has finished or not.  Well,
 448                  * since we're removing the active device, we know that it
 449                  * is finished.  So, get rid of the short timeout.
 450                  * Otherwise, if we're in the time period before the short
 451                  * timeout fires, and there are no other devices in the
 452                  * queue to run, there won't be any other device put in the
 453                  * active slot.  i.e., when we call cdrunchangerqueue()
 454                  * below, it won't do anything.  Then, when the short
 455                  * timeout fires, it'll look at the "current device", which
 456                  * we are free below, and possibly panic the kernel on a
 457                  * bogus pointer reference.
 458                  *
 459                  * The long timeout doesn't really matter, since we
 460                  * decrement the qfrozen_cnt to indicate that there is
 461                  * nothing in the active slot now.  Therefore, there won't
 462                  * be any bogus pointer references there.
 463                  */
 464                 if (softc->changer->flags & CHANGER_SHORT_TMOUT_SCHED) {
 465                         callout_stop(&softc->changer->short_handle);
 466                         softc->changer->flags &= ~CHANGER_SHORT_TMOUT_SCHED;
 467                 }
 468                 softc->changer->devq.qfrozen_cnt--;
 469                 softc->changer->flags |= CHANGER_MANUAL_CALL;
 470                 cdrunchangerqueue(softc->changer);
 471         }
 472
 473         /*
 474          * If we're removing the last device on the changer, go ahead and
 475          * remove the changer device structure.
 476          */
 477         if ((softc->flags & CD_FLAG_CHANGER)
 478          && (--softc->changer->num_devices == 0)) {
 479
 480                 /*
 481                  * Theoretically, there shouldn't be any timeouts left, but
 482                  * I'm not completely sure that that will be the case.  So,
 483                  * it won't hurt to check and see if there are any left.
 484                  */
 485                 if (softc->changer->flags & CHANGER_TIMEOUT_SCHED) {
 486                         callout_stop(&softc->changer->long_handle);
 487                         softc->changer->flags &= ~CHANGER_TIMEOUT_SCHED;
 488                 }
 489
 490                 if (softc->changer->flags & CHANGER_SHORT_TMOUT_SCHED) {
 491                         callout_stop(&softc->changer->short_handle);
 492                         softc->changer->flags &= ~CHANGER_SHORT_TMOUT_SCHED;
 493                 }
 494
 495                 lockmgr(&changerq_lock, LK_EXCLUSIVE);
 496                 STAILQ_REMOVE(&changerq, softc->changer, cdchanger,
 497                               changer_links);
 498                 num_changers--;
 499                 lockmgr(&changerq_lock, LK_RELEASE);
 500                 xpt_print(periph->path, "removing changer entry\n");
 501                 kfree(softc->changer, M_DEVBUF);
 502         }
 503         devstat_remove_entry(&softc->device_stats);
 504         cam_extend_release(cdperiphs, periph->unit_number);
 505         if (softc->disk.d_rawdev) {
 506                 cam_periph_unlock(periph);
 507                 disk_destroy(&softc->disk);
 508                 cam_periph_lock(periph);
 509         }
 510         kfree(softc, M_DEVBUF);
 511 }
 512
 513 static void
 514 cdasync(void *callback_arg, u_int32_t code,
 515         struct cam_path *path, void *arg)
 516 {
 517         struct cam_periph *periph;
 518
 519         periph = (struct cam_periph *)callback_arg;
 520         switch (code) {
 521         case AC_FOUND_DEVICE:
 522         {
 523                 struct ccb_getdev *cgd;
 524                 cam_status status;
 525
 526                 cgd = (struct ccb_getdev *)arg;
 527                 if (cgd == NULL)
 528                         break;
 529
 530                 if (SID_TYPE(&cgd->inq_data) != T_CDROM
 531                     && SID_TYPE(&cgd->inq_data) != T_WORM)
 532                         break;
 533
 534                 /*
 535                  * Allocate a peripheral instance for
 536                  * this device and start the probe
 537                  * process.
 538                  */
 539                 status = cam_periph_alloc(cdregister, cdoninvalidate,
 540                                           cdcleanup, cdstart,
 541                                           "cd", CAM_PERIPH_BIO,
 542                                           cgd->ccb_h.path, cdasync,
 543                                           AC_FOUND_DEVICE, cgd);
 544
 545                 if (status != CAM_REQ_CMP
 546                  && status != CAM_REQ_INPROG)
 547                         kprintf("cdasync: Unable to attach new device "
 548                                "due to status 0x%x\n", status);
 549
 550                 break;
 551         }
 552         case AC_SENT_BDR:
 553         case AC_BUS_RESET:
 554         {
 555                 struct cd_softc *softc;
 556                 struct ccb_hdr *ccbh;
 557
 558                 softc = (struct cd_softc *)periph->softc;
 559                 /*
 560                  * Don't fail on the expected unit attention
 561                  * that will occur.
 562                  */
 563                 softc->flags |= CD_FLAG_RETRY_UA;
 564                 LIST_FOREACH(ccbh, &softc->pending_ccbs, periph_links.le)
 565                         ccbh->ccb_state |= CD_CCB_RETRY_UA;
 566                 /* FALLTHROUGH */
 567         }
 568         default:
 569                 cam_periph_async(periph, code, path, arg);
 570                 break;
 571         }
 572 }
 573
 574 static void
 575 cdsysctlinit(void *context, int pending)
 576 {
 577         struct cam_periph *periph;
 578         struct cd_softc *softc;
 579         char tmpstr[80], tmpstr2[80];
 580
 581         periph = (struct cam_periph *)context;
 582         if (cam_periph_acquire(periph) != CAM_REQ_CMP)
 583                 return;
 584
 585         softc = (struct cd_softc *)periph->softc;
 586         ksnprintf(tmpstr, sizeof(tmpstr), "CAM CD unit %d", periph->unit_number);
 587         ksnprintf(tmpstr2, sizeof(tmpstr2), "%d", periph->unit_number);
 588
 589         sysctl_ctx_init(&softc->sysctl_ctx);
 590         softc->flags |= CD_FLAG_SCTX_INIT;
 591         softc->sysctl_tree = SYSCTL_ADD_NODE(&softc->sysctl_ctx,
 592         SYSCTL_STATIC_CHILDREN(_kern_cam_cd), OID_AUTO,
 593         tmpstr2, CTLFLAG_RD, 0, tmpstr);
 594
 595         if (softc->sysctl_tree == NULL) {
 596                 kprintf("cdsysctlinit: unable to allocate sysctl tree\n");
 597                 cam_periph_release(periph);
 598                 return;
 599         }
 600
 601         /*
 602          * Now register the sysctl handler, so the user can the value on
 603          * the fly.
 604          */
 605         SYSCTL_ADD_PROC(&softc->sysctl_ctx,SYSCTL_CHILDREN(softc->sysctl_tree),
 606                         OID_AUTO, "minimum_cmd_size", CTLTYPE_INT | CTLFLAG_RW,
 607                         &softc->minimum_command_size, 0, cdcmdsizesysctl, "I",
 608                         "Minimum CDB size");
 609
 610         cam_periph_release(periph);
 611 }
 612
 613 /*
 614  * We have a handler function for this so we can check the values when the
 615  * user sets them, instead of every time we look at them.
 616  */
 617 static int
 618 cdcmdsizesysctl(SYSCTL_HANDLER_ARGS)
 619 {
 620         int error, value;
 621
 622         value = *(int *)arg1;
 623
 624         error = sysctl_handle_int(oidp, &value, 0, req);
 625
 626         if ((error != 0) || (req->newptr == NULL))
 627                 return (error);
 628
 629         /*
 630          * The only real values we can have here are 6 or 10.  I don't
 631          * really forsee having 12 be an option at any time in the future.
 632          * So if the user sets something less than or equal to 6, we'll set
 633          * it to 6.  If he sets something greater than 6, we'll set it to 10.
 634          *
 635          * I suppose we could just return an error here for the wrong values,
 636          * but I don't think it's necessary to do so, as long as we can
 637          * determine the user's intent without too much trouble.
 638          */
 639         if (value < 6)
 640                 value = 6;
 641         else if (value > 6)
 642                 value = 10;
 643
 644         *(int *)arg1 = value;
 645
 646         return (0);
 647 }
 648
 649
 650 static cam_status
 651 cdregister(struct cam_periph *periph, void *arg)
 652 {
 653         struct cd_softc *softc;
 654         struct ccb_pathinq cpi;
 655         struct ccb_getdev *cgd;
 656         char tmpstr[80];
 657         caddr_t match;
 658
 659         cgd = (struct ccb_getdev *)arg;
 660         if (periph == NULL) {
 661                 kprintf("cdregister: periph was NULL!!\n");
 662                 return(CAM_REQ_CMP_ERR);
 663         }
 664         if (cgd == NULL) {
 665                 kprintf("cdregister: no getdev CCB, can't register device\n");
 666                 return(CAM_REQ_CMP_ERR);
 667         }
 668
 669         softc = kmalloc(sizeof(*softc), M_DEVBUF, M_INTWAIT | M_ZERO);
 670         LIST_INIT(&softc->pending_ccbs);
 671         STAILQ_INIT(&softc->mode_queue);
 672         softc->state = CD_STATE_PROBE;
 673         bioq_init(&softc->bio_queue);
 674         if (SID_IS_REMOVABLE(&cgd->inq_data))
 675                 softc->flags |= CD_FLAG_DISC_REMOVABLE;
 676         if ((cgd->inq_data.flags & SID_CmdQue) != 0)
 677                 softc->flags |= CD_FLAG_TAGGED_QUEUING;
 678
 679         periph->softc = softc;
 680         softc->periph = periph;
 681
 682         cam_extend_set(cdperiphs, periph->unit_number, periph);
 683
 684         /*
 685          * See if this device has any quirks.
 686          */
 687         match = cam_quirkmatch((caddr_t)&cgd->inq_data,
 688                                (caddr_t)cd_quirk_table,
 689                                sizeof(cd_quirk_table)/sizeof(*cd_quirk_table),
 690                                sizeof(*cd_quirk_table), scsi_inquiry_match);
 691
 692         if (match != NULL)
 693                 softc->quirks = ((struct cd_quirk_entry *)match)->quirks;
 694         else
 695                 softc->quirks = CD_Q_NONE;
 696
 697         /* Check if the SIM does not want 6 byte commands */
 698         xpt_setup_ccb(&cpi.ccb_h, periph->path, /*priority*/1);
 699         cpi.ccb_h.func_code = XPT_PATH_INQ;
 700         xpt_action((union ccb *)&cpi);
 701         if (cpi.ccb_h.status == CAM_REQ_CMP && (cpi.hba_misc & PIM_NO_6_BYTE))
 702                 softc->quirks |= CD_Q_10_BYTE_ONLY;
 703
 704         TASK_INIT(&softc->sysctl_task, 0, cdsysctlinit, periph);
 705
 706         /* The default is 6 byte commands, unless quirked otherwise */
 707         if (softc->quirks & CD_Q_10_BYTE_ONLY)
 708                 softc->minimum_command_size = 10;
 709         else
 710                 softc->minimum_command_size = 6;
 711
 712         /*
 713          * Load the user's default, if any.
 714          */
 715         ksnprintf(tmpstr, sizeof(tmpstr), "kern.cam.cd.%d.minimum_cmd_size",
 716                 periph->unit_number);
 717         TUNABLE_INT_FETCH(tmpstr, &softc->minimum_command_size);
 718
 719         /* 6 and 10 are the only permissible values here. */
 720         if (softc->minimum_command_size < 6)
 721                 softc->minimum_command_size = 6;
 722         else if (softc->minimum_command_size > 6)
 723                 softc->minimum_command_size = 10;
 724
 725         /*
 726          * We need to register the statistics structure for this device,
 727          * but we don't have the blocksize yet for it.  So, we register
 728          * the structure and indicate that we don't have the blocksize
 729          * yet.  Unlike other SCSI peripheral drivers, we explicitly set
 730          * the device type here to be CDROM, rather than just ORing in
 731          * the device type.  This is because this driver can attach to either
 732          * CDROM or WORM devices, and we want this peripheral driver to
 733          * show up in the devstat list as a CD peripheral driver, not a
 734          * WORM peripheral driver.  WORM drives will also have the WORM
 735          * driver attached to them.
 736          */
 737         cam_periph_unlock(periph);
 738         devstat_add_entry(&softc->device_stats, "cd",
 739                           periph->unit_number, 0,
 740                           DEVSTAT_BS_UNAVAILABLE,
 741                           DEVSTAT_TYPE_CDROM | DEVSTAT_TYPE_IF_SCSI,
 742                           DEVSTAT_PRIORITY_CD);
 743         disk_create(periph->unit_number, &softc->disk, &cd_ops);
 744         softc->disk.d_rawdev->si_iosize_max = MAXPHYS;
 745         softc->disk.d_info.d_dsflags = DSO_ONESLICE | DSO_COMPATLABEL |
 746                                         DSO_COMPATPARTA;
 747         cam_periph_lock(periph);
 748
 749         /*
 750          * Add an async callback so that we get
 751          * notified if this device goes away.
 752          */
 753         xpt_register_async(AC_SENT_BDR | AC_BUS_RESET | AC_LOST_DEVICE,
 754                            cdasync, periph, periph->path);
 755
 756         /*
 757          * If the target lun is greater than 0, we most likely have a CD
 758          * changer device.  Check the quirk entries as well, though, just
 759          * in case someone has a CD tower with one lun per drive or
 760          * something like that.  Also, if we know up front that a
 761          * particular device is a changer, we can mark it as such starting
 762          * with lun 0, instead of lun 1.  It shouldn't be necessary to have
 763          * a quirk entry to define something as a changer, however.
 764          */
 765         if (((cgd->ccb_h.target_lun > 0)
 766           && ((softc->quirks & CD_Q_NO_CHANGER) == 0))
 767          || ((softc->quirks & CD_Q_CHANGER) != 0)) {
 768                 struct cdchanger *nchanger;
 769                 struct cam_periph *nperiph;
 770                 struct cam_path *path;
 771                 cam_status status;
 772                 int found;
 773
 774                 /* Set the changer flag in the current device's softc */
 775                 softc->flags |= CD_FLAG_CHANGER;
 776
 777                 /*
 778                  * Now, look around for an existing changer device with the
 779                  * same path and target ID as the current device.
 780                  */
 781                 lockmgr(&changerq_lock, LK_EXCLUSIVE);
 782                 for (found = 0,
 783                      nchanger = (struct cdchanger *)STAILQ_FIRST(&changerq);
 784                      nchanger != NULL;
 785                      nchanger = STAILQ_NEXT(nchanger, changer_links)){
 786                         if ((nchanger->path_id == cgd->ccb_h.path_id)
 787                          && (nchanger->target_id == cgd->ccb_h.target_id)) {
 788                                 found = 1;
 789                                 break;
 790                         }
 791                 }
 792                 lockmgr(&changerq_lock, LK_RELEASE);
 793
 794                 /*
 795                  * If we found a matching entry, just add this device to
 796                  * the list of devices on this changer.
 797                  */
 798                 if (found == 1) {
 799                         struct chdevlist *chlunhead;
 800
 801                         chlunhead = &nchanger->chluns;
 802
 803                         /*
 804                          * XXX KDM look at consolidating this code with the
 805                          * code below in a separate function.
 806                          */
 807
 808                         /*
 809                          * Create a path with lun id 0, and see if we can
 810                          * find a matching device
 811                          */
 812                         status = xpt_create_path(&path, /*periph*/ periph,
 813                                                  cgd->ccb_h.path_id,
 814                                                  cgd->ccb_h.target_id, 0);
 815
 816                         if ((status == CAM_REQ_CMP)
 817                          && ((nperiph = cam_periph_find(path, "cd")) != NULL)){
 818                                 struct cd_softc *nsoftc;
 819
 820                                 nsoftc = (struct cd_softc *)nperiph->softc;
 821
 822                                 if ((nsoftc->flags & CD_FLAG_CHANGER) == 0){
 823                                         nsoftc->flags |= CD_FLAG_CHANGER;
 824                                         nchanger->num_devices++;
 825                                         if (camq_resize(&nchanger->devq,
 826                                            nchanger->num_devices)!=CAM_REQ_CMP){
 827                                                 kprintf("cdregister: "
 828                                                        "camq_resize "
 829                                                        "failed, changer "
 830                                                        "support may "
 831                                                        "be messed up\n");
 832                                         }
 833                                         nsoftc->changer = nchanger;
 834                                         nsoftc->pinfo.index =CAM_UNQUEUED_INDEX;
 835
 836                                         STAILQ_INSERT_TAIL(&nchanger->chluns,
 837                                                           nsoftc,changer_links);
 838                                 }
 839                                 xpt_free_path(path);
 840                         } else if (status == CAM_REQ_CMP)
 841                                 xpt_free_path(path);
 842                         else {
 843                                 kprintf("cdregister: unable to allocate path\n"
 844                                        "cdregister: changer support may be "
 845                                        "broken\n");
 846                         }
 847
 848                         nchanger->num_devices++;
 849
 850                         softc->changer = nchanger;
 851                         softc->pinfo.index = CAM_UNQUEUED_INDEX;
 852
 853                         if (camq_resize(&nchanger->devq,
 854                             nchanger->num_devices) != CAM_REQ_CMP) {
 855                                 kprintf("cdregister: camq_resize "
 856                                        "failed, changer support may "
 857                                        "be messed up\n");
 858                         }
 859
 860                         STAILQ_INSERT_TAIL(chlunhead, softc, changer_links);
 861                 }
 862                 /*
 863                  * In this case, we don't already have an entry for this
 864                  * particular changer, so we need to create one, add it to
 865                  * the queue, and queue this device on the list for this
 866                  * changer.  Before we queue this device, however, we need
 867                  * to search for lun id 0 on this target, and add it to the
 868                  * queue first, if it exists.  (and if it hasn't already
 869                  * been marked as part of the changer.)
 870                  */
 871                 else {
 872                         nchanger = kmalloc(sizeof(struct cdchanger),
 873                                         M_DEVBUF, M_INTWAIT | M_ZERO);
 874                         callout_init(&nchanger->short_handle);
 875                         callout_init(&nchanger->long_handle);
 876                         if (camq_init(&nchanger->devq, 1) != 0) {
 877                                 softc->flags &= ~CD_FLAG_CHANGER;
 878                                 kprintf("cdregister: changer support "
 879                                        "disabled\n");
 880                                 goto cdregisterexit;
 881                         }
 882
 883                         nchanger->path_id = cgd->ccb_h.path_id;
 884                         nchanger->target_id = cgd->ccb_h.target_id;
 885
 886                         /* this is superfluous, but it makes things clearer */
 887                         nchanger->num_devices = 0;
 888
 889                         STAILQ_INIT(&nchanger->chluns);
 890
 891                         callout_init(&nchanger->long_handle);
 892                         callout_init(&nchanger->short_handle);
 893
 894                         lockmgr(&changerq_lock, LK_EXCLUSIVE);
 895                         num_changers++;
 896                         STAILQ_INSERT_TAIL(&changerq, nchanger,
 897                                            changer_links);
 898                         lockmgr(&changerq_lock, LK_RELEASE);
 899
 900                         /*
 901                          * Create a path with lun id 0, and see if we can
 902                          * find a matching device
 903                          */
 904                         status = xpt_create_path(&path, /*periph*/ periph,
 905                                                  cgd->ccb_h.path_id,
 906                                                  cgd->ccb_h.target_id, 0);
 907
 908                         /*
 909                          * If we were able to allocate the path, and if we
 910                          * find a matching device and it isn't already
 911                          * marked as part of a changer, then we add it to
 912                          * the current changer.
 913                          */
 914                         if ((status == CAM_REQ_CMP)
 915                          && ((nperiph = cam_periph_find(path, "cd")) != NULL)
 916                          && ((((struct cd_softc *)periph->softc)->flags &
 917                                CD_FLAG_CHANGER) == 0)) {
 918                                 struct cd_softc *nsoftc;
 919
 920                                 nsoftc = (struct cd_softc *)nperiph->softc;
 921
 922                                 nsoftc->flags |= CD_FLAG_CHANGER;
 923                                 nchanger->num_devices++;
 924                                 if (camq_resize(&nchanger->devq,
 925                                     nchanger->num_devices) != CAM_REQ_CMP) {
 926                                         kprintf("cdregister: camq_resize "
 927                                                "failed, changer support may "
 928                                                "be messed up\n");
 929                                 }
 930                                 nsoftc->changer = nchanger;
 931                                 nsoftc->pinfo.index = CAM_UNQUEUED_INDEX;
 932
 933                                 STAILQ_INSERT_TAIL(&nchanger->chluns,
 934                                                    nsoftc, changer_links);
 935                                 xpt_free_path(path);
 936                         } else if (status == CAM_REQ_CMP)
 937                                 xpt_free_path(path);
 938                         else {
 939                                 kprintf("cdregister: unable to allocate path\n"
 940                                        "cdregister: changer support may be "
 941                                        "broken\n");
 942                         }
 943
 944                         softc->changer = nchanger;
 945                         softc->pinfo.index = CAM_UNQUEUED_INDEX;
 946                         nchanger->num_devices++;
 947                         if (camq_resize(&nchanger->devq,
 948                             nchanger->num_devices) != CAM_REQ_CMP) {
 949                                 kprintf("cdregister: camq_resize "
 950                                        "failed, changer support may "
 951                                        "be messed up\n");
 952                         }
 953                         STAILQ_INSERT_TAIL(&nchanger->chluns, softc,
 954                                            changer_links);
 955                 }
 956         }
 957
 958 cdregisterexit:
 959
 960         /*
 961          * Refcount and block open attempts until we are setup
 962          * Can't block
 963          */
 964         cam_periph_hold(periph, 0);
 965
 966         if ((softc->flags & CD_FLAG_CHANGER) == 0)
 967                 xpt_schedule(periph, /*priority*/5);
 968         else
 969                 cdschedule(periph, /*priority*/ 5);
 970
 971         return(CAM_REQ_CMP);
 972 }
 973
 974 static int
 975 cdopen(struct dev_open_args *ap)
 976 {
 977         cdev_t dev = ap->a_head.a_dev;
 978         struct cam_periph *periph;
 979         struct cd_softc *softc;
 980         int unit, error;
 981
 982         unit = dkunit(dev);
 983         periph = cam_extend_get(cdperiphs, unit);
 984
 985         if (periph == NULL)
 986                 return (ENXIO);
 987
 988         softc = (struct cd_softc *)periph->softc;
 989
 990         if (cam_periph_acquire(periph) != CAM_REQ_CMP)
 991                 return(ENXIO);
 992
 993         cam_periph_lock(periph);
 994
 995         if (softc->flags & CD_FLAG_INVALID) {
 996                 cam_periph_unlock(periph);
 997                 cam_periph_release(periph);
 998                 return(ENXIO);
 999         }
1000
1001         if ((error = cam_periph_hold(periph, PCATCH)) != 0) {
1002                 cam_periph_unlock(periph);
1003                 cam_periph_release(periph);
1004                 return (error);
1005         }
1006
1007         /* Closes aren't symmetrical with opens, so fix up the refcounting. */
1008         if (softc->flags & CD_FLAG_OPEN)
1009                 cam_periph_release(periph);
1010         else
1011                 softc->flags |= CD_FLAG_OPEN;
1012
1013         /*
1014          * Check for media, and set the appropriate flags.  We don't bail
1015          * if we don't have media, but then we don't allow anything but the
1016          * CDIOCEJECT/CDIOCCLOSE ioctls if there is no media.
1017          *
1018          * XXX KDM for now, we do fail the open if we don't have media.  We
1019          * can change this once we've figured out how to make the slice
1020          * code work well with media changing underneath it.
1021          */
1022         error = cdcheckmedia(periph);
1023
1024         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("leaving cdopen\n"));
1025         cam_periph_unhold(periph, 1);
1026         /* stays acquired */
1027
1028         return (0);
1029 }
1030
1031 static int
1032 cdclose(struct dev_close_args *ap)
1033 {
1034         cdev_t dev = ap->a_head.a_dev;
1035         struct  cam_periph *periph;
1036         struct  cd_softc *softc;
1037         struct  disk_info *info;
1038         int     unit;
1039
1040         unit = dkunit(dev);
1041         periph = cam_extend_get(cdperiphs, unit);
1042         if (periph == NULL)
1043                 return (ENXIO);
1044
1045         softc = (struct cd_softc *)periph->softc;
1046
1047         cam_periph_lock(periph);
1048         cam_periph_hold(periph, 0);
1049
1050         if ((softc->flags & CD_FLAG_DISC_REMOVABLE) != 0)
1051                 cdprevent(periph, PR_ALLOW);
1052
1053         /*
1054          * Unconditionally set the dsopen() flags back to their default
1055          * state.
1056          */
1057         info = &softc->disk.d_info;
1058         info->d_dsflags &= ~DSO_NOLABELS;
1059         info->d_dsflags |= DSO_COMPATLABEL;
1060
1061         /*
1062          * Since we're closing this CD, mark the blocksize as unavailable.
1063          * It will be marked as available when the CD is opened again.
1064          */
1065         softc->device_stats.flags |= DEVSTAT_BS_UNAVAILABLE;
1066
1067         /*
1068          * We'll check the media and toc again at the next open().
1069          */
1070         softc->flags &= ~(CD_FLAG_VALID_MEDIA|CD_FLAG_VALID_TOC|CD_FLAG_OPEN);
1071
1072         cam_periph_unhold(periph, 1);
1073         cam_periph_release(periph);
1074
1075         return (0);
1076 }
1077
1078 static void
1079 cdshorttimeout(void *arg)
1080 {
1081         struct cdchanger *changer;
1082
1083         changer = (struct cdchanger *)arg;
1084
1085         /* Always clear the short timeout flag, since that's what we're in */
1086         changer->flags &= ~CHANGER_SHORT_TMOUT_SCHED;
1087
1088         /*
1089          * Check to see if there is any more pending or outstanding I/O for
1090          * this device.  If not, move it out of the active slot.
1091          */
1092         if ((bioq_first(&changer->cur_device->bio_queue) == NULL)
1093          && (changer->cur_device->outstanding_cmds == 0)) {
1094                 changer->flags |= CHANGER_MANUAL_CALL;
1095                 cdrunchangerqueue(changer);
1096         }
1097 }
1098
1099 /*
1100  * This is a wrapper for xpt_schedule.  It only applies to changers.
1101  */
1102 static void
1103 cdschedule(struct cam_periph *periph, int priority)
1104 {
1105         struct cd_softc *softc;
1106
1107         softc = (struct cd_softc *)periph->softc;
1108
1109         /*
1110          * If this device isn't currently queued, and if it isn't
1111          * the active device, then we queue this device and run the
1112          * changer queue if there is no timeout scheduled to do it.
1113          * If this device is the active device, just schedule it
1114          * to run again.  If this device is queued, there should be
1115          * a timeout in place already that will make sure it runs.
1116          */
1117         if ((softc->pinfo.index == CAM_UNQUEUED_INDEX)
1118          && ((softc->flags & CD_FLAG_ACTIVE) == 0)) {
1119                 /*
1120                  * We don't do anything with the priority here.
1121                  * This is strictly a fifo queue.
1122                  */
1123                 softc->pinfo.priority = 1;
1124                 softc->pinfo.generation = ++softc->changer->devq.generation;
1125                 camq_insert(&softc->changer->devq, (cam_pinfo *)softc);
1126
1127                 /*
1128                  * Since we just put a device in the changer queue,
1129                  * check and see if there is a timeout scheduled for
1130                  * this changer.  If so, let the timeout handle
1131                  * switching this device into the active slot.  If
1132                  * not, manually call the timeout routine to
1133                  * bootstrap things.
1134                  */
1135                 if (((softc->changer->flags & CHANGER_TIMEOUT_SCHED)==0)
1136                  && ((softc->changer->flags & CHANGER_NEED_TIMEOUT)==0)
1137                  && ((softc->changer->flags & CHANGER_SHORT_TMOUT_SCHED)==0)){
1138                         softc->changer->flags |= CHANGER_MANUAL_CALL;
1139                         cdrunchangerqueue(softc->changer);
1140                 }
1141         } else if ((softc->flags & CD_FLAG_ACTIVE)
1142                 && ((softc->flags & CD_FLAG_SCHED_ON_COMP) == 0)) {
1143                 xpt_schedule(periph, priority);
1144         }
1145 }
1146
1147 static void
1148 cdrunchangerqueue(void *arg)
1149 {
1150         struct cd_softc *softc;
1151         struct cdchanger *changer;
1152         int called_from_timeout;
1153
1154         changer = (struct cdchanger *)arg;
1155
1156         /*
1157          * If we have NOT been called from cdstrategy() or cddone(), and
1158          * instead from a timeout routine, go ahead and clear the
1159          * timeout flag.
1160          */
1161         if ((changer->flags & CHANGER_MANUAL_CALL) == 0) {
1162                 changer->flags &= ~CHANGER_TIMEOUT_SCHED;
1163                 called_from_timeout = 1;
1164         } else
1165                 called_from_timeout = 0;
1166
1167         /* Always clear the manual call flag */
1168         changer->flags &= ~CHANGER_MANUAL_CALL;
1169
1170         /* nothing to do if the queue is empty */
1171         if (changer->devq.entries <= 0) {
1172                 return;
1173         }
1174
1175         /*
1176          * If the changer queue is frozen, that means we have an active
1177          * device.
1178          */
1179         if (changer->devq.qfrozen_cnt > 0) {
1180
1181                 /*
1182                  * We always need to reset the frozen count and clear the
1183                  * active flag.
1184                  */
1185                 changer->devq.qfrozen_cnt--;
1186                 changer->cur_device->flags &= ~CD_FLAG_ACTIVE;
1187                 changer->cur_device->flags &= ~CD_FLAG_SCHED_ON_COMP;
1188
1189                 if (changer->cur_device->outstanding_cmds > 0) {
1190                         changer->cur_device->flags |= CD_FLAG_SCHED_ON_COMP;
1191                         changer->cur_device->bufs_left =
1192                                 changer->cur_device->outstanding_cmds;
1193                         if (called_from_timeout) {
1194                                 callout_reset(&changer->long_handle,
1195                                         changer_max_busy_seconds * hz,
1196                                         cdrunchangerqueue, changer);
1197                                 changer->flags |= CHANGER_TIMEOUT_SCHED;
1198                         }
1199                         return;
1200                 }
1201
1202                 /*
1203                  * Check to see whether the current device has any I/O left
1204                  * to do.  If so, requeue it at the end of the queue.  If
1205                  * not, there is no need to requeue it.
1206                  */
1207                 if (bioq_first(&changer->cur_device->bio_queue) != NULL) {
1208
1209                         changer->cur_device->pinfo.generation =
1210                                 ++changer->devq.generation;
1211                         camq_insert(&changer->devq,
1212                                 (cam_pinfo *)changer->cur_device);
1213                 }
1214         }
1215
1216         softc = (struct cd_softc *)camq_remove(&changer->devq, CAMQ_HEAD);
1217
1218         changer->cur_device = softc;
1219
1220         changer->devq.qfrozen_cnt++;
1221         softc->flags |= CD_FLAG_ACTIVE;
1222
1223         /* Just in case this device is waiting */
1224         wakeup(&softc->changer);
1225         xpt_schedule(softc->periph, /*priority*/ 1);
1226
1227         /*
1228          * Get rid of any pending timeouts, and set a flag to schedule new
1229          * ones so this device gets its full time quantum.
1230          */
1231         if (changer->flags & CHANGER_TIMEOUT_SCHED) {
1232                 callout_stop(&changer->long_handle);
1233                 changer->flags &= ~CHANGER_TIMEOUT_SCHED;
1234         }
1235
1236         if (changer->flags & CHANGER_SHORT_TMOUT_SCHED) {
1237                 callout_stop(&changer->short_handle);
1238                 changer->flags &= ~CHANGER_SHORT_TMOUT_SCHED;
1239         }
1240
1241         /*
1242          * We need to schedule timeouts, but we only do this after the
1243          * first transaction has completed.  This eliminates the changer
1244          * switch time.
1245          */
1246         changer->flags |= CHANGER_NEED_TIMEOUT;
1247 }
1248
1249 static void
1250 cdchangerschedule(struct cd_softc *softc)
1251 {
1252         struct cdchanger *changer;
1253
1254         changer = softc->changer;
1255
1256         /*
1257          * If this is a changer, and this is the current device,
1258          * and this device has at least the minimum time quantum to
1259          * run, see if we can switch it out.
1260          */
1261         if ((softc->flags & CD_FLAG_ACTIVE)
1262          && ((changer->flags & CHANGER_SHORT_TMOUT_SCHED) == 0)
1263          && ((changer->flags & CHANGER_NEED_TIMEOUT) == 0)) {
1264                 /*
1265                  * We try three things here.  The first is that we
1266                  * check to see whether the schedule on completion
1267                  * flag is set.  If it is, we decrement the number
1268                  * of buffers left, and if it's zero, we reschedule.
1269                  * Next, we check to see whether the pending buffer
1270                  * queue is empty and whether there are no
1271                  * outstanding transactions.  If so, we reschedule.
1272                  * Next, we see if the pending buffer queue is empty.
1273                  * If it is, we set the number of buffers left to
1274                  * the current active buffer count and set the
1275                  * schedule on complete flag.
1276                  */
1277                 if (softc->flags & CD_FLAG_SCHED_ON_COMP) {
1278                         if (--softc->bufs_left == 0) {
1279                                 softc->changer->flags |=
1280                                         CHANGER_MANUAL_CALL;
1281                                 softc->flags &= ~CD_FLAG_SCHED_ON_COMP;
1282                                 cdrunchangerqueue(softc->changer);
1283                         }
1284                 } else if ((bioq_first(&softc->bio_queue) == NULL)
1285                         && (softc->outstanding_cmds == 0)) {
1286                         softc->changer->flags |= CHANGER_MANUAL_CALL;
1287                         cdrunchangerqueue(softc->changer);
1288                 }
1289         } else if ((softc->changer->flags & CHANGER_NEED_TIMEOUT)
1290                 && (softc->flags & CD_FLAG_ACTIVE)) {
1291
1292                 /*
1293                  * Now that the first transaction to this
1294                  * particular device has completed, we can go ahead
1295                  * and schedule our timeouts.
1296                  */
1297                 if ((changer->flags & CHANGER_TIMEOUT_SCHED) == 0) {
1298                         callout_reset(&changer->long_handle,
1299                                     changer_max_busy_seconds * hz,
1300                                     cdrunchangerqueue, changer);
1301                         changer->flags |= CHANGER_TIMEOUT_SCHED;
1302                 } else
1303                         kprintf("cdchangerschedule: already have a long"
1304                                " timeout!\n");
1305
1306                 if ((changer->flags & CHANGER_SHORT_TMOUT_SCHED) == 0) {
1307                         callout_reset(&changer->short_handle,
1308                                         changer_min_busy_seconds * hz,
1309                                         cdshorttimeout, changer);
1310                         changer->flags |= CHANGER_SHORT_TMOUT_SCHED;
1311                 } else
1312                         kprintf("cdchangerschedule: already have a short "
1313                                "timeout!\n");
1314
1315                 /*
1316                  * We just scheduled timeouts, no need to schedule
1317                  * more.
1318                  */
1319                 changer->flags &= ~CHANGER_NEED_TIMEOUT;
1320
1321         }
1322 }
1323
1324 static int
1325 cdrunccb(union ccb *ccb, int (*error_routine)(union ccb *ccb,
1326                                               u_int32_t cam_flags,
1327                                               u_int32_t sense_flags),
1328          u_int32_t cam_flags, u_int32_t sense_flags)
1329 {
1330         struct cd_softc *softc;
1331         struct cam_periph *periph;
1332         int error;
1333
1334         periph = xpt_path_periph(ccb->ccb_h.path);
1335         softc = (struct cd_softc *)periph->softc;
1336
1337         error = cam_periph_runccb(ccb, error_routine, cam_flags, sense_flags,
1338                                   &softc->device_stats);
1339
1340         if (softc->flags & CD_FLAG_CHANGER)
1341                 cdchangerschedule(softc);
1342
1343         return(error);
1344 }
1345
1346 static union ccb *
1347 cdgetccb(struct cam_periph *periph, u_int32_t priority)
1348 {
1349         struct cd_softc *softc;
1350
1351         softc = (struct cd_softc *)periph->softc;
1352
1353         if (softc->flags & CD_FLAG_CHANGER) {
1354                 /*
1355                  * This should work the first time this device is woken up,
1356                  * but just in case it doesn't, we use a while loop.
1357                  */
1358                 while ((softc->flags & CD_FLAG_ACTIVE) == 0) {
1359                         /*
1360                          * If this changer isn't already queued, queue it up.
1361                          */
1362                         if (softc->pinfo.index == CAM_UNQUEUED_INDEX) {
1363                                 softc->pinfo.priority = 1;
1364                                 softc->pinfo.generation =
1365                                         ++softc->changer->devq.generation;
1366                                 camq_insert(&softc->changer->devq,
1367                                             (cam_pinfo *)softc);
1368                         }
1369                         if (((softc->changer->flags & CHANGER_TIMEOUT_SCHED)==0)
1370                          && ((softc->changer->flags & CHANGER_NEED_TIMEOUT)==0)
1371                          && ((softc->changer->flags
1372                               & CHANGER_SHORT_TMOUT_SCHED)==0)) {
1373                                 softc->changer->flags |= CHANGER_MANUAL_CALL;
1374                                 cdrunchangerqueue(softc->changer);
1375                         } else
1376                                 sim_lock_sleep(&softc->changer, 0, "cgticb", 0,
1377                                                periph->sim->lock);
1378                 }
1379         }
1380         return(cam_periph_getccb(periph, priority));
1381 }
1382
1383 /*
1384  * Actually translate the requested transfer into one the physical driver
1385  * can understand.  The transfer is described by a buf and will include
1386  * only one physical transfer.
1387  */
1388 static int
1389 cdstrategy(struct dev_strategy_args *ap)
1390 {
1391         cdev_t dev = ap->a_head.a_dev;
1392         struct bio *bio = ap->a_bio;
1393         struct buf *bp = bio->bio_buf;
1394         struct cam_periph *periph;
1395         struct cd_softc *softc;
1396         u_int  unit;
1397
1398         unit = dkunit(dev);
1399         periph = cam_extend_get(cdperiphs, unit);
1400         if (periph == NULL) {
1401                 bp->b_error = ENXIO;
1402                 goto bad;
1403         }
1404
1405         cam_periph_lock(periph);
1406         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("entering cdstrategy\n"));
1407
1408         softc = (struct cd_softc *)periph->softc;
1409
1410         /*
1411          * If the device has been made invalid, error out
1412          */
1413         if ((softc->flags & CD_FLAG_INVALID)) {
1414                 cam_periph_unlock(periph);
1415                 bp->b_error = ENXIO;
1416                 goto bad;
1417         }
1418
1419         /*
1420          * If we don't have valid media, look for it before trying to
1421          * schedule the I/O.
1422          */
1423         if ((softc->flags & CD_FLAG_VALID_MEDIA) == 0) {
1424                 int error;
1425
1426                 error = cdcheckmedia(periph);
1427                 if (error != 0) {
1428                         cam_periph_unlock(periph);
1429                         bp->b_error = error;
1430                         goto bad;
1431                 }
1432         }
1433
1434         /*
1435          * Place it in the queue of disk activities for this disk
1436          */
1437         bioqdisksort(&softc->bio_queue, bio);
1438
1439         /*
1440          * Schedule ourselves for performing the work.  We do things
1441          * differently for changers.
1442          */
1443         if ((softc->flags & CD_FLAG_CHANGER) == 0)
1444                 xpt_schedule(periph, /* XXX priority */1);
1445         else
1446                 cdschedule(periph, /* priority */ 1);
1447
1448         cam_periph_unlock(periph);
1449         return(0);
1450 bad:
1451         bp->b_flags |= B_ERROR;
1452         /*
1453          * Correctly set the buf to indicate a completed xfer
1454          */
1455         bp->b_resid = bp->b_bcount;
1456         biodone(bio);
1457         return(0);
1458 }
1459
1460 static void
1461 cdstart(struct cam_periph *periph, union ccb *start_ccb)
1462 {
1463         struct cd_softc *softc;
1464         struct bio *bio;
1465         struct buf *bp;
1466         struct ccb_scsiio *csio;
1467         struct scsi_read_capacity_data *rcap;
1468
1469         softc = (struct cd_softc *)periph->softc;
1470
1471         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("entering cdstart\n"));
1472
1473         switch (softc->state) {
1474         case CD_STATE_NORMAL:
1475         {
1476                 bio = bioq_first(&softc->bio_queue);
1477                 if (periph->immediate_priority <= periph->pinfo.priority) {
1478                         start_ccb->ccb_h.ccb_state = CD_CCB_WAITING;
1479
1480                         SLIST_INSERT_HEAD(&periph->ccb_list, &start_ccb->ccb_h,
1481                                           periph_links.sle);
1482                         periph->immediate_priority = CAM_PRIORITY_NONE;
1483                         wakeup(&periph->ccb_list);
1484                 } else if (bio == NULL) {
1485                         xpt_release_ccb(start_ccb);
1486                 } else {
1487                         bp = bio->bio_buf;
1488                         bioq_remove(&softc->bio_queue, bio);
1489
1490                         devstat_start_transaction(&softc->device_stats);
1491
1492                         KKASSERT(bio->bio_offset % softc->params.blksize == 0);
1493
1494                         scsi_read_write(&start_ccb->csio,
1495                                         /*retries*/4,
1496                                         /* cbfcnp */ cddone,
1497                                         (bp->b_flags & B_ORDERED) != 0 ?
1498                                             MSG_ORDERED_Q_TAG :
1499                                             MSG_SIMPLE_Q_TAG,
1500                                         /* read */(bp->b_cmd == BUF_CMD_READ),
1501                                         /* byte2 */ 0,
1502                                         /* minimum_cmd_size */ 10,
1503                                         /* lba */
1504                                         bio->bio_offset / softc->params.blksize,
1505                                         bp->b_bcount / softc->params.blksize,
1506                                         /* data_ptr */ bp->b_data,
1507                                         /* dxfer_len */ bp->b_bcount,
1508                                         /* sense_len */ SSD_FULL_SIZE,
1509                                         /* timeout */ 30000);
1510                         start_ccb->ccb_h.ccb_state = CD_CCB_BUFFER_IO;
1511
1512
1513                         LIST_INSERT_HEAD(&softc->pending_ccbs,
1514                                          &start_ccb->ccb_h, periph_links.le);
1515
1516                         softc->outstanding_cmds++;
1517                         /* We expect a unit attention from this device */
1518                         if ((softc->flags & CD_FLAG_RETRY_UA) != 0) {
1519                                 start_ccb->ccb_h.ccb_state |= CD_CCB_RETRY_UA;
1520                                 softc->flags &= ~CD_FLAG_RETRY_UA;
1521                         }
1522
1523                         start_ccb->ccb_h.ccb_bio = bio;
1524                         bio = bioq_first(&softc->bio_queue);
1525
1526                         xpt_action(start_ccb);
1527                 }
1528                 if (bio != NULL) {
1529                         /* Have more work to do, so ensure we stay scheduled */
1530                         xpt_schedule(periph, /* XXX priority */1);
1531                 }
1532                 break;
1533         }
1534         case CD_STATE_PROBE:
1535         {
1536
1537                 rcap = kmalloc(sizeof(*rcap), M_SCSICD, M_INTWAIT);
1538                 csio = &start_ccb->csio;
1539                 scsi_read_capacity(csio,
1540                                    /*retries*/1,
1541                                    cddone,
1542                                    MSG_SIMPLE_Q_TAG,
1543                                    rcap,
1544                                    SSD_FULL_SIZE,
1545                                    /*timeout*/20000);
1546                 start_ccb->ccb_h.ccb_bio = NULL;
1547                 start_ccb->ccb_h.ccb_state = CD_CCB_PROBE;
1548                 xpt_action(start_ccb);
1549                 break;
1550         }
1551         }
1552 }
1553
1554 static void
1555 cddone(struct cam_periph *periph, union ccb *done_ccb)
1556 {
1557         struct cd_softc *softc;
1558         struct ccb_scsiio *csio;
1559
1560         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("entering cddone\n"));
1561
1562         softc = (struct cd_softc *)periph->softc;
1563         csio = &done_ccb->csio;
1564
1565         switch (csio->ccb_h.ccb_state & CD_CCB_TYPE_MASK) {
1566         case CD_CCB_BUFFER_IO:
1567         {
1568                 struct buf      *bp;
1569                 struct bio      *bio;
1570                 int             error;
1571
1572                 bio = (struct bio *)done_ccb->ccb_h.ccb_bio;
1573                 bp = bio->bio_buf;
1574                 error = 0;
1575
1576                 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1577                         int sf;
1578
1579                         if ((done_ccb->ccb_h.ccb_state & CD_CCB_RETRY_UA) != 0)
1580                                 sf = SF_RETRY_UA;
1581                         else
1582                                 sf = 0;
1583
1584                         error = cderror(done_ccb, CAM_RETRY_SELTO, sf);
1585                         if (error == ERESTART) {
1586                                 /*
1587                                  * A retry was scheuled, so
1588                                  * just return.
1589                                  */
1590                                 return;
1591                         }
1592                 }
1593
1594                 if (error != 0) {
1595                         struct bio *q_bio;
1596                         struct buf *q_bp;
1597
1598                         xpt_print(periph->path,
1599                                   "cddone: got error %#x back\n", error);
1600                         while ((q_bio = bioq_first(&softc->bio_queue)) != NULL) {
1601                                 bioq_remove(&softc->bio_queue, q_bio);
1602                                 q_bp = q_bio->bio_buf;
1603                                 q_bp->b_resid = q_bp->b_bcount;
1604                                 q_bp->b_error = EIO;
1605                                 q_bp->b_flags |= B_ERROR;
1606                                 biodone(q_bio);
1607                         }
1608                         bp->b_resid = bp->b_bcount;
1609                         bp->b_error = error;
1610                         bp->b_flags |= B_ERROR;
1611                         cam_release_devq(done_ccb->ccb_h.path,
1612                                          /*relsim_flags*/0,
1613                                          /*reduction*/0,
1614                                          /*timeout*/0,
1615                                          /*getcount_only*/0);
1616
1617                 } else {
1618                         bp->b_resid = csio->resid;
1619                         bp->b_error = 0;
1620                         if (bp->b_resid != 0) {
1621                                 /* Short transfer ??? */
1622                                 bp->b_flags |= B_ERROR;
1623                         }
1624                 }
1625
1626                 LIST_REMOVE(&done_ccb->ccb_h, periph_links.le);
1627                 softc->outstanding_cmds--;
1628
1629                 if (softc->flags & CD_FLAG_CHANGER)
1630                         cdchangerschedule(softc);
1631
1632                 devstat_end_transaction_buf(&softc->device_stats, bp);
1633                 biodone(bio);
1634                 break;
1635         }
1636         case CD_CCB_PROBE:
1637         {
1638                 struct     scsi_read_capacity_data *rdcap;
1639                 char       announce_buf[120]; /*
1640                                                * Currently (9/30/97) the
1641                                                * longest possible announce
1642                                                * buffer is 108 bytes, for the
1643                                                * first error case below.
1644                                                * That is 39 bytes for the
1645                                                * basic string, 16 bytes for the
1646                                                * biggest sense key (hardware
1647                                                * error), 52 bytes for the
1648                                                * text of the largest sense
1649                                                * qualifier valid for a CDROM,
1650                                                * (0x72, 0x03 or 0x04,
1651                                                * 0x03), and one byte for the
1652                                                * null terminating character.
1653                                                * To allow for longer strings,
1654                                                * the announce buffer is 120
1655                                                * bytes.
1656                                                */
1657                 struct     cd_params *cdp;
1658
1659                 cdp = &softc->params;
1660
1661                 rdcap = (struct scsi_read_capacity_data *)csio->data_ptr;
1662
1663                 cdp->disksize = scsi_4btoul (rdcap->addr) + 1;
1664                 cdp->blksize = scsi_4btoul (rdcap->length);
1665
1666                 if ((csio->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP) {
1667
1668                         ksnprintf(announce_buf, sizeof(announce_buf),
1669                                 "cd present [%lu x %lu byte records]",
1670                                 cdp->disksize, (u_long)cdp->blksize);
1671
1672                 } else {
1673                         int     error;
1674                         /*
1675                          * Retry any UNIT ATTENTION type errors.  They
1676                          * are expected at boot.
1677                          */
1678                         error = cderror(done_ccb, CAM_RETRY_SELTO,
1679                                         SF_RETRY_UA | SF_NO_PRINT);
1680                         if (error == ERESTART) {
1681                                 /*
1682                                  * A retry was scheuled, so
1683                                  * just return.
1684                                  */
1685                                 return;
1686                         } else if (error != 0) {
1687
1688                                 struct scsi_sense_data *sense;
1689                                 int asc, ascq;
1690                                 int sense_key, error_code;
1691                                 int have_sense;
1692                                 cam_status status;
1693                                 struct ccb_getdev cgd;
1694
1695                                 /* Don't wedge this device's queue */
1696                                 cam_release_devq(done_ccb->ccb_h.path,
1697                                                  /*relsim_flags*/0,
1698                                                  /*reduction*/0,
1699                                                  /*timeout*/0,
1700                                                  /*getcount_only*/0);
1701
1702                                 status = done_ccb->ccb_h.status;
1703
1704                                 xpt_setup_ccb(&cgd.ccb_h,
1705                                               done_ccb->ccb_h.path,
1706                                               /* priority */ 1);
1707                                 cgd.ccb_h.func_code = XPT_GDEV_TYPE;
1708                                 xpt_action((union ccb *)&cgd);
1709
1710                                 if (((csio->ccb_h.flags & CAM_SENSE_PHYS) != 0)
1711                                  || ((csio->ccb_h.flags & CAM_SENSE_PTR) != 0)
1712                                  || ((status & CAM_AUTOSNS_VALID) == 0))
1713                                         have_sense = FALSE;
1714                                 else
1715                                         have_sense = TRUE;
1716
1717                                 if (have_sense) {
1718                                         sense = &csio->sense_data;
1719                                         scsi_extract_sense(sense, &error_code,
1720                                                            &sense_key,
1721                                                            &asc, &ascq);
1722                                 }
1723                                 /*
1724                                  * Attach to anything that claims to be a
1725                                  * CDROM or WORM device, as long as it
1726                                  * doesn't return a "Logical unit not
1727                                  * supported" (0x25) error.
1728                                  */
1729                                 if ((have_sense) && (asc != 0x25)
1730                                  && (error_code == SSD_CURRENT_ERROR)) {
1731                                         const char *sense_key_desc;
1732                                         const char *asc_desc;
1733
1734                                         scsi_sense_desc(sense_key, asc, ascq,
1735                                                         &cgd.inq_data,
1736                                                         &sense_key_desc,
1737                                                         &asc_desc);
1738                                         ksnprintf(announce_buf,
1739                                             sizeof(announce_buf),
1740                                                 "Attempt to query device "
1741                                                 "size failed: %s, %s",
1742                                                 sense_key_desc,
1743                                                 asc_desc);
1744                                 } else if (SID_TYPE(&cgd.inq_data) == T_CDROM) {
1745                                         /*
1746                                          * We only print out an error for
1747                                          * CDROM type devices.  For WORM
1748                                          * devices, we don't print out an
1749                                          * error since a few WORM devices
1750                                          * don't support CDROM commands.
1751                                          * If we have sense information, go
1752                                          * ahead and print it out.
1753                                          * Otherwise, just say that we
1754                                          * couldn't attach.
1755                                          */
1756
1757                                         /*
1758                                          * Just print out the error, not
1759                                          * the full probe message, when we
1760                                          * don't attach.
1761                                          */
1762                                         if (have_sense)
1763                                                 scsi_sense_print(
1764                                                         &done_ccb->csio);
1765                                         else {
1766                                                 xpt_print(periph->path,
1767                                                     "got CAM status %#x\n",
1768                                                     done_ccb->ccb_h.status);
1769                                         }
1770                                         xpt_print(periph->path, "fatal error, "
1771                                             "failed to attach to device\n");
1772                                         /*
1773                                          * Invalidate this peripheral.
1774                                          */
1775                                         cam_periph_invalidate(periph);
1776
1777                                         announce_buf[0] = '\0';
1778                                 } else {
1779
1780                                         /*
1781                                          * Invalidate this peripheral.
1782                                          */
1783                                         cam_periph_invalidate(periph);
1784                                         announce_buf[0] = '\0';
1785                                 }
1786                         }
1787                 }
1788                 kfree(rdcap, M_SCSICD);
1789                 if (announce_buf[0] != '\0') {
1790                         xpt_announce_periph(periph, announce_buf);
1791                         if (softc->flags & CD_FLAG_CHANGER)
1792                                 cdchangerschedule(softc);
1793                         /*
1794                          * Create our sysctl variables, now that we know
1795                          * we have successfully attached.
1796                          */
1797                         taskqueue_enqueue(taskqueue_thread[mycpuid],
1798                             &softc->sysctl_task);
1799                 }
1800                 softc->state = CD_STATE_NORMAL;
1801                 /*
1802                  * Since our peripheral may be invalidated by an error
1803                  * above or an external event, we must release our CCB
1804                  * before releasing the probe lock on the peripheral.
1805                  * The peripheral will only go away once the last lock
1806                  * is removed, and we need it around for the CCB release
1807                  * operation.
1808                  */
1809                 xpt_release_ccb(done_ccb);
1810                 cam_periph_unhold(periph, 0);
1811                 return;
1812         }
1813         case CD_CCB_WAITING:
1814         {
1815                 /* Caller will release the CCB */
1816                 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE,
1817                           ("trying to wakeup ccbwait\n"));
1818
1819                 wakeup(&done_ccb->ccb_h.cbfcnp);
1820                 return;
1821         }
1822         default:
1823                 break;
1824         }
1825         xpt_release_ccb(done_ccb);
1826 }
1827
1828 static union cd_pages *
1829 cdgetpage(struct cd_mode_params *mode_params)
1830 {
1831         union cd_pages *page;
1832
1833         if (mode_params->cdb_size == 10)
1834                 page = (union cd_pages *)find_mode_page_10(
1835                         (struct scsi_mode_header_10 *)mode_params->mode_buf);
1836         else
1837                 page = (union cd_pages *)find_mode_page_6(
1838                         (struct scsi_mode_header_6 *)mode_params->mode_buf);
1839
1840         return (page);
1841 }
1842
1843 static int
1844 cdgetpagesize(int page_num)
1845 {
1846         int i;
1847
1848         for (i = 0; i < (sizeof(cd_page_size_table)/
1849             sizeof(cd_page_size_table[0])); i++) {
1850                 if (cd_page_size_table[i].page == page_num)
1851                         return (cd_page_size_table[i].page_size);
1852         }
1853         return (-1);
1854 }
1855
1856 static int
1857 cdioctl(struct dev_ioctl_args *ap)
1858 {
1859         cdev_t dev = ap->a_head.a_dev;
1860         caddr_t addr = ap->a_data;
1861         struct  cam_periph *periph;
1862         struct  cd_softc *softc;
1863         int     unit, error = 0;
1864
1865         unit = dkunit(dev);
1866
1867         periph = cam_extend_get(cdperiphs, unit);
1868         if (periph == NULL)
1869                 return(ENXIO);
1870
1871         cam_periph_lock(periph);
1872         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("entering cdioctl\n"));
1873
1874         softc = (struct cd_softc *)periph->softc;
1875
1876         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE,
1877                   ("trying to do ioctl %#lx\n", ap->a_cmd));
1878
1879         if ((error = cam_periph_hold(periph, PCATCH)) != 0) {
1880                 cam_periph_unlock(periph);
1881                 cam_periph_release(periph);
1882                 return (error);
1883         }
1884
1885         /*
1886          * If we don't have media loaded, check for it.  If still don't
1887          * have media loaded, we can only do a load or eject.
1888          *
1889          * We only care whether media is loaded if this is a cd-specific ioctl
1890          * (thus the IOCGROUP check below).  Note that this will break if
1891          * anyone adds any ioctls into the switch statement below that don't
1892          * have their ioctl group set to 'c'.
1893          */
1894         if (((softc->flags & CD_FLAG_VALID_MEDIA) == 0)
1895             && ((ap->a_cmd != CDIOCCLOSE)
1896             && (ap->a_cmd != CDIOCEJECT))
1897             && (IOCGROUP(ap->a_cmd) == 'c')) {
1898                 error = cdcheckmedia(periph);
1899                 if (error != 0) {
1900                         cam_periph_unhold(periph, 1);
1901                         return (error);
1902                 }
1903         }
1904         /*
1905          * Drop the lock here so later mallocs can use WAITOK.  The periph
1906          * is essentially locked still with the cam_periph_hold call above.
1907          */
1908         cam_periph_unlock(periph);
1909
1910         switch (ap->a_cmd) {
1911
1912         case CDIOCPLAYTRACKS:
1913                 {
1914                         struct ioc_play_track *args
1915                             = (struct ioc_play_track *)addr;
1916                         struct cd_mode_params params;
1917                         union cd_pages *page;
1918
1919                         params.alloc_len = sizeof(union cd_mode_data_6_10);
1920                         params.mode_buf = kmalloc(params.alloc_len, M_SCSICD,
1921                                                  M_WAITOK | M_ZERO);
1922
1923                         cam_periph_lock(periph);
1924                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
1925                                   ("trying to do CDIOCPLAYTRACKS\n"));
1926
1927                         error = cdgetmode(periph, &params, AUDIO_PAGE);
1928                         if (error) {
1929                                 kfree(params.mode_buf, M_SCSICD);
1930                                 cam_periph_unlock(periph);
1931                                 break;
1932                         }
1933                         page = cdgetpage(&params);
1934
1935                         page->audio.flags &= ~CD_PA_SOTC;
1936                         page->audio.flags |= CD_PA_IMMED;
1937                         error = cdsetmode(periph, &params);
1938                         kfree(params.mode_buf, M_SCSICD);
1939                         if (error) {
1940                                 cam_periph_unlock(periph);
1941                                 break;
1942                         }
1943
1944                         /*
1945                          * This was originally implemented with the PLAY
1946                          * AUDIO TRACK INDEX command, but that command was
1947                          * deprecated after SCSI-2.  Most (all?) SCSI CDROM
1948                          * drives support it but ATAPI and ATAPI-derivative
1949                          * drives don't seem to support it.  So we keep a
1950                          * cache of the table of contents and translate
1951                          * track numbers to MSF format.
1952                          */
1953                         if (softc->flags & CD_FLAG_VALID_TOC) {
1954                                 union msf_lba *sentry, *eentry;
1955                                 int st, et;
1956
1957                                 if (args->end_track <
1958                                     softc->toc.header.ending_track + 1)
1959                                         args->end_track++;
1960                                 if (args->end_track >
1961                                     softc->toc.header.ending_track + 1)
1962                                         args->end_track =
1963                                             softc->toc.header.ending_track + 1;
1964                                 st = args->start_track -
1965                                         softc->toc.header.starting_track;
1966                                 et = args->end_track -
1967                                         softc->toc.header.starting_track;
1968                                 if ((st < 0)
1969                                  || (et < 0)
1970                                  || (st > (softc->toc.header.ending_track -
1971                                      softc->toc.header.starting_track))) {
1972                                         error = EINVAL;
1973                                         break;
1974                                 }
1975                                 sentry = &softc->toc.entries[st].addr;
1976                                 eentry = &softc->toc.entries[et].addr;
1977                                 error = cdplaymsf(periph,
1978                                                   sentry->msf.minute,
1979                                                   sentry->msf.second,
1980                                                   sentry->msf.frame,
1981                                                   eentry->msf.minute,
1982                                                   eentry->msf.second,
1983                                                   eentry->msf.frame);
1984                         } else {
1985                                 /*
1986                                  * If we don't have a valid TOC, try the
1987                                  * play track index command.  It is part of
1988                                  * the SCSI-2 spec, but was removed in the
1989                                  * MMC specs.  ATAPI and ATAPI-derived
1990                                  * drives don't support it.
1991                                  */
1992                                 if (softc->quirks & CD_Q_BCD_TRACKS) {
1993                                         args->start_track =
1994                                                 bin2bcd(args->start_track);
1995                                         args->end_track =
1996                                                 bin2bcd(args->end_track);
1997                                 }
1998                                 error = cdplaytracks(periph,
1999                                                      args->start_track,
2000                                                      args->start_index,
2001                                                      args->end_track,
2002                                                      args->end_index);
2003                         }
2004                         cam_periph_unlock(periph);
2005                 }
2006                 break;
2007         case CDIOCPLAYMSF:
2008                 {
2009                         struct ioc_play_msf *args
2010                                 = (struct ioc_play_msf *) addr;
2011                         struct cd_mode_params params;
2012                         union cd_pages *page;
2013
2014                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2015                         params.mode_buf = kmalloc(params.alloc_len, M_SCSICD,
2016                                                  M_WAITOK | M_ZERO);
2017
2018                         cam_periph_lock(periph);
2019                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2020                                   ("trying to do CDIOCPLAYMSF\n"));
2021
2022                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2023                         if (error) {
2024                                 kfree(params.mode_buf, M_SCSICD);
2025                                 cam_periph_unlock(periph);
2026                                 break;
2027                         }
2028                         page = cdgetpage(&params);
2029
2030                         page->audio.flags &= ~CD_PA_SOTC;
2031                         page->audio.flags |= CD_PA_IMMED;
2032                         error = cdsetmode(periph, &params);
2033                         kfree(params.mode_buf, M_SCSICD);
2034                         if (error) {
2035                                 cam_periph_unlock(periph);
2036                                 break;
2037                         }
2038                         error = cdplaymsf(periph,
2039                                           args->start_m,
2040                                           args->start_s,
2041                                           args->start_f,
2042                                           args->end_m,
2043                                           args->end_s,
2044                                           args->end_f);
2045                         cam_periph_unlock(periph);
2046                 }
2047                 break;
2048         case CDIOCPLAYBLOCKS:
2049                 {
2050                         struct ioc_play_blocks *args
2051                                 = (struct ioc_play_blocks *) addr;
2052                         struct cd_mode_params params;
2053                         union cd_pages *page;
2054
2055                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2056                         params.mode_buf = kmalloc(params.alloc_len, M_SCSICD,
2057                                                  M_WAITOK | M_ZERO);
2058                         cam_periph_lock(periph);
2059                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2060                                   ("trying to do CDIOCPLAYBLOCKS\n"));
2061
2062
2063                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2064                         if (error) {
2065                                 kfree(params.mode_buf, M_SCSICD);
2066                                 cam_periph_unlock(periph);
2067                                 break;
2068                         }
2069                         page = cdgetpage(&params);
2070
2071                         page->audio.flags &= ~CD_PA_SOTC;
2072                         page->audio.flags |= CD_PA_IMMED;
2073                         error = cdsetmode(periph, &params);
2074                         kfree(params.mode_buf, M_SCSICD);
2075                         if (error) {
2076                                 cam_periph_unlock(periph);
2077                                 break;
2078                         }
2079                         error = cdplay(periph, args->blk, args->len);
2080                         cam_periph_unlock(periph);
2081                 }
2082                 break;
2083         case CDIOCREADSUBCHANNEL:
2084                 {
2085                         struct ioc_read_subchannel *args
2086                                 = (struct ioc_read_subchannel *) addr;
2087                         struct cd_sub_channel_info *data;
2088                         u_int32_t len = args->data_len;
2089
2090                         data = kmalloc(sizeof(struct cd_sub_channel_info),
2091                                       M_SCSICD, M_WAITOK);
2092
2093                         cam_periph_lock(periph);
2094                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2095                                   ("trying to do CDIOCREADSUBCHANNEL\n"));
2096
2097                         if ((len > sizeof(struct cd_sub_channel_info)) ||
2098                             (len < sizeof(struct cd_sub_channel_header))) {
2099                                 kprintf(
2100                                         "scsi_cd: cdioctl: "
2101                                         "cdioreadsubchannel: error, len=%d\n",
2102                                         len);
2103                                 error = EINVAL;
2104                                 kfree(data, M_SCSICD);
2105                                 cam_periph_unlock(periph);
2106                                 break;
2107                         }
2108
2109                         if (softc->quirks & CD_Q_BCD_TRACKS)
2110                                 args->track = bin2bcd(args->track);
2111
2112                         error = cdreadsubchannel(periph, args->address_format,
2113                                 args->data_format, args->track, data, len);
2114
2115                         if (error) {
2116                                 kfree(data, M_SCSICD);
2117                                 cam_periph_unlock(periph);
2118                                 break;
2119                         }
2120                         if (softc->quirks & CD_Q_BCD_TRACKS)
2121                                 data->what.track_info.track_number =
2122                                     bcd2bin(data->what.track_info.track_number);
2123                         len = min(len, ((data->header.data_len[0] << 8) +
2124                                 data->header.data_len[1] +
2125                                 sizeof(struct cd_sub_channel_header)));
2126                         cam_periph_unlock(periph);
2127                         if (copyout(data, args->data, len) != 0) {
2128                                 error = EFAULT;
2129                         }
2130                         kfree(data, M_SCSICD);
2131                 }
2132                 break;
2133
2134         case CDIOREADTOCHEADER:
2135                 {
2136                         struct ioc_toc_header *th;
2137
2138                         th = kmalloc(sizeof(struct ioc_toc_header), M_SCSICD,
2139                                     M_WAITOK);
2140
2141                         cam_periph_lock(periph);
2142                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2143                                   ("trying to do CDIOREADTOCHEADER\n"));
2144
2145                         error = cdreadtoc(periph, 0, 0, (u_int8_t *)th,
2146                                           sizeof (*th), /*sense_flags*/0);
2147                         if (error) {
2148                                 kfree(th, M_SCSICD);
2149                                 cam_periph_unlock(periph);
2150                                 break;
2151                         }
2152                         if (softc->quirks & CD_Q_BCD_TRACKS) {
2153                                 /* we are going to have to convert the BCD
2154                                  * encoding on the cd to what is expected
2155                                  */
2156                                 th->starting_track =
2157                                         bcd2bin(th->starting_track);
2158                                 th->ending_track = bcd2bin(th->ending_track);
2159                         }
2160                         th->len = ntohs(th->len);
2161                         bcopy(th, addr, sizeof(*th));
2162                         kfree(th, M_SCSICD);
2163                         cam_periph_unlock(periph);
2164                 }
2165                 break;
2166         case CDIOREADTOCENTRYS:
2167                 {
2168                         struct cd_tocdata *data;
2169                         struct cd_toc_single *lead;
2170                         struct ioc_read_toc_entry *te =
2171                                 (struct ioc_read_toc_entry *) addr;
2172                         struct ioc_toc_header *th;
2173                         u_int32_t len, readlen, idx, num;
2174                         u_int32_t starting_track = te->starting_track;
2175
2176                         data = kmalloc(sizeof(*data), M_SCSICD, M_WAITOK);
2177                         lead = kmalloc(sizeof(*lead), M_SCSICD, M_WAITOK);
2178
2179                         cam_periph_lock(periph);
2180                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2181                                   ("trying to do CDIOREADTOCENTRYS\n"));
2182
2183                         if (te->data_len < sizeof(struct cd_toc_entry)
2184                          || (te->data_len % sizeof(struct cd_toc_entry)) != 0
2185                          || (te->address_format != CD_MSF_FORMAT
2186                           && te->address_format != CD_LBA_FORMAT)) {
2187                                 error = EINVAL;
2188                                 kprintf("scsi_cd: error in readtocentries, "
2189                                        "returning EINVAL\n");
2190                                 kfree(data, M_SCSICD);
2191                                 kfree(lead, M_SCSICD);
2192                                 cam_periph_unlock(periph);
2193                                 break;
2194                         }
2195
2196                         th = &data->header;
2197                         error = cdreadtoc(periph, 0, 0, (u_int8_t *)th,
2198                                           sizeof (*th), /*sense_flags*/0);
2199                         if (error) {
2200                                 kfree(data, M_SCSICD);
2201                                 kfree(lead, M_SCSICD);
2202                                 cam_periph_unlock(periph);
2203                                 break;
2204                         }
2205
2206                         if (softc->quirks & CD_Q_BCD_TRACKS) {
2207                                 /* we are going to have to convert the BCD
2208                                  * encoding on the cd to what is expected
2209                                  */
2210                                 th->starting_track =
2211                                     bcd2bin(th->starting_track);
2212                                 th->ending_track = bcd2bin(th->ending_track);
2213                         }
2214
2215                         if (starting_track == 0)
2216                                 starting_track = th->starting_track;
2217                         else if (starting_track == LEADOUT)
2218                                 starting_track = th->ending_track + 1;
2219                         else if (starting_track < th->starting_track ||
2220                                  starting_track > th->ending_track + 1) {
2221                                 kprintf("scsi_cd: error in readtocentries, "
2222                                        "returning EINVAL\n");
2223                                 kfree(data, M_SCSICD);
2224                                 kfree(lead, M_SCSICD);
2225                                 cam_periph_unlock(periph);
2226                                 error = EINVAL;
2227                                 break;
2228                         }
2229
2230                         /* calculate reading length without leadout entry */
2231                         readlen = (th->ending_track - starting_track + 1) *
2232                                   sizeof(struct cd_toc_entry);
2233
2234                         /* and with leadout entry */
2235                         len = readlen + sizeof(struct cd_toc_entry);
2236                         if (te->data_len < len) {
2237                                 len = te->data_len;
2238                                 if (readlen > len)
2239                                         readlen = len;
2240                         }
2241                         if (len > sizeof(data->entries)) {
2242                                 kprintf("scsi_cd: error in readtocentries, "
2243                                        "returning EINVAL\n");
2244                                 error = EINVAL;
2245                                 kfree(data, M_SCSICD);
2246                                 kfree(lead, M_SCSICD);
2247                                 cam_periph_unlock(periph);
2248                                 break;
2249                         }
2250                         num = len / sizeof(struct cd_toc_entry);
2251
2252                         if (readlen > 0) {
2253                                 error = cdreadtoc(periph, te->address_format,
2254                                                   starting_track,
2255                                                   (u_int8_t *)data,
2256                                                   readlen + sizeof (*th),
2257                                                   /*sense_flags*/0);
2258                                 if (error) {
2259                                         kfree(data, M_SCSICD);
2260                                         kfree(lead, M_SCSICD);
2261                                         cam_periph_unlock(periph);
2262                                         break;
2263                                 }
2264                         }
2265
2266                         /* make leadout entry if needed */
2267                         idx = starting_track + num - 1;
2268                         if (softc->quirks & CD_Q_BCD_TRACKS)
2269                                 th->ending_track = bcd2bin(th->ending_track);
2270                         if (idx == th->ending_track + 1) {
2271                                 error = cdreadtoc(periph, te->address_format,
2272                                                   LEADOUT, (u_int8_t *)lead,
2273                                                   sizeof(*lead),
2274                                                   /*sense_flags*/0);
2275                                 if (error) {
2276                                         kfree(data, M_SCSICD);
2277                                         kfree(lead, M_SCSICD);
2278                                         cam_periph_unlock(periph);
2279                                         break;
2280                                 }
2281                                 data->entries[idx - starting_track] =
2282                                         lead->entry;
2283                         }
2284                         if (softc->quirks & CD_Q_BCD_TRACKS) {
2285                                 for (idx = 0; idx < num - 1; idx++) {
2286                                         data->entries[idx].track =
2287                                             bcd2bin(data->entries[idx].track);
2288                                 }
2289                         }
2290
2291                         cam_periph_unlock(periph);
2292                         error = copyout(data->entries, te->data, len);
2293                         kfree(data, M_SCSICD);
2294                         kfree(lead, M_SCSICD);
2295                 }
2296                 break;
2297         case CDIOREADTOCENTRY:
2298                 {
2299                         struct cd_toc_single *data;
2300                         struct ioc_read_toc_single_entry *te =
2301                                 (struct ioc_read_toc_single_entry *) addr;
2302                         struct ioc_toc_header *th;
2303                         u_int32_t track;
2304
2305                         data = kmalloc(sizeof(*data), M_SCSICD, M_WAITOK);
2306
2307                         cam_periph_lock(periph);
2308                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2309                                   ("trying to do CDIOREADTOCENTRY\n"));
2310
2311                         if (te->address_format != CD_MSF_FORMAT
2312                             && te->address_format != CD_LBA_FORMAT) {
2313                                 kprintf("error in readtocentry, "
2314                                        " returning EINVAL\n");
2315                                 kfree(data, M_SCSICD);
2316                                 error = EINVAL;
2317                                 cam_periph_unlock(periph);
2318                                 break;
2319                         }
2320
2321                         th = &data->header;
2322                         error = cdreadtoc(periph, 0, 0, (u_int8_t *)th,
2323                                           sizeof (*th), /*sense_flags*/0);
2324                         if (error) {
2325                                 kfree(data, M_SCSICD);
2326                                 cam_periph_unlock(periph);
2327                                 break;
2328                         }
2329
2330                         if (softc->quirks & CD_Q_BCD_TRACKS) {
2331                                 /* we are going to have to convert the BCD
2332                                  * encoding on the cd to what is expected
2333                                  */
2334                                 th->starting_track =
2335                                     bcd2bin(th->starting_track);
2336                                 th->ending_track = bcd2bin(th->ending_track);
2337                         }
2338                         track = te->track;
2339                         if (track == 0)
2340                                 track = th->starting_track;
2341                         else if (track == LEADOUT)
2342                                 /* OK */;
2343                         else if (track < th->starting_track ||
2344                                  track > th->ending_track + 1) {
2345                                 kprintf("error in readtocentry, "
2346                                        " returning EINVAL\n");
2347                                 kfree(data, M_SCSICD);
2348                                 error = EINVAL;
2349                                 cam_periph_unlock(periph);
2350                                 break;
2351                         }
2352
2353                         error = cdreadtoc(periph, te->address_format, track,
2354                                           (u_int8_t *)data, sizeof(*data),
2355                                           /*sense_flags*/0);
2356                         if (error) {
2357                                 kfree(data, M_SCSICD);
2358                                 cam_periph_unlock(periph);
2359                                 break;
2360                         }
2361
2362                         if (softc->quirks & CD_Q_BCD_TRACKS)
2363                                 data->entry.track = bcd2bin(data->entry.track);
2364                         bcopy(&data->entry, &te->entry,
2365                               sizeof(struct cd_toc_entry));
2366                         kfree(data, M_SCSICD);
2367                         cam_periph_unlock(periph);
2368                 }
2369                 break;
2370         case CDIOCSETPATCH:
2371                 {
2372                         struct ioc_patch *arg = (struct ioc_patch *)addr;
2373                         struct cd_mode_params params;
2374                         union cd_pages *page;
2375
2376                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2377                         params.mode_buf = kmalloc(params.alloc_len, M_SCSICD,
2378                                                  M_WAITOK | M_ZERO);
2379
2380                         cam_periph_lock(periph);
2381                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2382                                   ("trying to do CDIOCSETPATCH\n"));
2383
2384                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2385                         if (error) {
2386                                 kfree(params.mode_buf, M_SCSICD);
2387                                 cam_periph_unlock(periph);
2388                                 break;
2389                         }
2390                         page = cdgetpage(&params);
2391
2392                         page->audio.port[LEFT_PORT].channels =
2393                                 arg->patch[0];
2394                         page->audio.port[RIGHT_PORT].channels =
2395                                 arg->patch[1];
2396                         page->audio.port[2].channels = arg->patch[2];
2397                         page->audio.port[3].channels = arg->patch[3];
2398                         error = cdsetmode(periph, &params);
2399                         kfree(params.mode_buf, M_SCSICD);
2400                         cam_periph_unlock(periph);
2401                 }
2402                 break;
2403         case CDIOCGETVOL:
2404                 {
2405                         struct ioc_vol *arg = (struct ioc_vol *) addr;
2406                         struct cd_mode_params params;
2407                         union cd_pages *page;
2408
2409                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2410                         params.mode_buf = kmalloc(params.alloc_len, M_SCSICD,
2411                                                  M_WAITOK | M_ZERO);
2412
2413                         cam_periph_lock(periph);
2414                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2415                                   ("trying to do CDIOCGETVOL\n"));
2416
2417                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2418                         if (error) {
2419                                 kfree(params.mode_buf, M_SCSICD);
2420                                 cam_periph_unlock(periph);
2421                                 break;
2422                         }
2423                         page = cdgetpage(&params);
2424
2425                         arg->vol[LEFT_PORT] =
2426                                 page->audio.port[LEFT_PORT].volume;
2427                         arg->vol[RIGHT_PORT] =
2428                                 page->audio.port[RIGHT_PORT].volume;
2429                         arg->vol[2] = page->audio.port[2].volume;
2430                         arg->vol[3] = page->audio.port[3].volume;
2431                         kfree(params.mode_buf, M_SCSICD);
2432                         cam_periph_unlock(periph);
2433                 }
2434                 break;
2435         case CDIOCSETVOL:
2436                 {
2437                         struct ioc_vol *arg = (struct ioc_vol *) addr;
2438                         struct cd_mode_params params;
2439                         union cd_pages *page;
2440
2441                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2442                         params.mode_buf = kmalloc(params.alloc_len, M_SCSICD,
2443                                                  M_WAITOK | M_ZERO);
2444
2445                         cam_periph_lock(periph);
2446                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2447                                   ("trying to do CDIOCSETVOL\n"));
2448
2449                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2450                         if (error) {
2451                                 kfree(params.mode_buf, M_SCSICD);
2452                                 cam_periph_unlock(periph);
2453                                 break;
2454                         }
2455                         page = cdgetpage(&params);
2456
2457                         page->audio.port[LEFT_PORT].channels = CHANNEL_0;
2458                         page->audio.port[LEFT_PORT].volume =
2459                                 arg->vol[LEFT_PORT];
2460                         page->audio.port[RIGHT_PORT].channels = CHANNEL_1;
2461                         page->audio.port[RIGHT_PORT].volume =
2462                                 arg->vol[RIGHT_PORT];
2463                         page->audio.port[2].volume = arg->vol[2];
2464                         page->audio.port[3].volume = arg->vol[3];
2465                         error = cdsetmode(periph, &params);
2466                         cam_periph_unlock(periph);
2467                         kfree(params.mode_buf, M_SCSICD);
2468                 }
2469                 break;
2470         case CDIOCSETMONO:
2471                 {
2472                         struct cd_mode_params params;
2473                         union cd_pages *page;
2474
2475                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2476                         params.mode_buf = kmalloc(params.alloc_len, M_SCSICD,
2477                                                  M_WAITOK | M_ZERO);
2478
2479                         cam_periph_lock(periph);
2480                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2481                                   ("trying to do CDIOCSETMONO\n"));
2482
2483                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2484                         if (error) {
2485                                 kfree(params.mode_buf, M_SCSICD);
2486                                 cam_periph_unlock(periph);
2487                                 break;
2488                         }
2489                         page = cdgetpage(&params);
2490
2491                         page->audio.port[LEFT_PORT].channels =
2492                                 LEFT_CHANNEL | RIGHT_CHANNEL;
2493                         page->audio.port[RIGHT_PORT].channels =
2494                                 LEFT_CHANNEL | RIGHT_CHANNEL;
2495                         page->audio.port[2].channels = 0;
2496                         page->audio.port[3].channels = 0;
2497                         error = cdsetmode(periph, &params);
2498                         cam_periph_unlock(periph);
2499                         kfree(params.mode_buf, M_SCSICD);
2500                 }
2501                 break;
2502         case CDIOCSETSTEREO:
2503                 {
2504                         struct cd_mode_params params;
2505                         union cd_pages *page;
2506
2507                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2508                         params.mode_buf = kmalloc(params.alloc_len, M_SCSICD,
2509                                                  M_WAITOK | M_ZERO);
2510
2511                         cam_periph_lock(periph);
2512                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2513                                   ("trying to do CDIOCSETSTEREO\n"));
2514
2515                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2516                         if (error) {
2517                                 kfree(params.mode_buf, M_SCSICD);
2518                                 cam_periph_unlock(periph);
2519                                 break;
2520                         }
2521                         page = cdgetpage(&params);
2522
2523                         page->audio.port[LEFT_PORT].channels =
2524                                 LEFT_CHANNEL;
2525                         page->audio.port[RIGHT_PORT].channels =
2526                                 RIGHT_CHANNEL;
2527                         page->audio.port[2].channels = 0;
2528                         page->audio.port[3].channels = 0;
2529                         error = cdsetmode(periph, &params);
2530                         kfree(params.mode_buf, M_SCSICD);
2531                         cam_periph_unlock(periph);
2532                 }
2533                 break;
2534         case CDIOCSETMUTE:
2535                 {
2536                         struct cd_mode_params params;
2537                         union cd_pages *page;
2538
2539                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2540                         params.mode_buf = kmalloc(params.alloc_len, M_SCSICD,
2541                                                  M_WAITOK | M_ZERO);
2542
2543                         cam_periph_lock(periph);
2544                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2545                                   ("trying to do CDIOCSETMUTE\n"));
2546
2547                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2548                         if (error) {
2549                                 kfree(&params, M_SCSICD);
2550                                 cam_periph_unlock(periph);
2551                                 break;
2552                         }
2553                         page = cdgetpage(&params);
2554
2555                         page->audio.port[LEFT_PORT].channels = 0;
2556                         page->audio.port[RIGHT_PORT].channels = 0;
2557                         page->audio.port[2].channels = 0;
2558                         page->audio.port[3].channels = 0;
2559                         error = cdsetmode(periph, &params);
2560                         kfree(params.mode_buf, M_SCSICD);
2561                         cam_periph_unlock(periph);
2562                 }
2563                 break;
2564         case CDIOCSETLEFT:
2565                 {
2566                         struct cd_mode_params params;
2567                         union cd_pages *page;
2568
2569                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2570                         params.mode_buf = kmalloc(params.alloc_len, M_SCSICD,
2571                                                  M_WAITOK | M_ZERO);
2572
2573                         cam_periph_lock(periph);
2574                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2575                                   ("trying to do CDIOCSETLEFT\n"));
2576
2577                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2578                         if (error) {
2579                                 kfree(params.mode_buf, M_SCSICD);
2580                                 cam_periph_unlock(periph);
2581                                 break;
2582                         }
2583                         page = cdgetpage(&params);
2584
2585                         page->audio.port[LEFT_PORT].channels = LEFT_CHANNEL;
2586                         page->audio.port[RIGHT_PORT].channels = LEFT_CHANNEL;
2587                         page->audio.port[2].channels = 0;
2588                         page->audio.port[3].channels = 0;
2589                         error = cdsetmode(periph, &params);
2590                         kfree(params.mode_buf, M_SCSICD);
2591                         cam_periph_unlock(periph);
2592                 }
2593                 break;
2594         case CDIOCSETRIGHT:
2595                 {
2596                         struct cd_mode_params params;
2597                         union cd_pages *page;
2598
2599                         params.alloc_len = sizeof(union cd_mode_data_6_10);
2600                         params.mode_buf = kmalloc(params.alloc_len, M_SCSICD,
2601                                                  M_WAITOK | M_ZERO);
2602
2603                         cam_periph_lock(periph);
2604                         CAM_DEBUG(periph->path, CAM_DEBUG_SUBTRACE,
2605                                   ("trying to do CDIOCSETRIGHT\n"));
2606
2607                         error = cdgetmode(periph, &params, AUDIO_PAGE);
2608                         if (error) {
2609                                 kfree(params.mode_buf, M_SCSICD);
2610                                 cam_periph_unlock(periph);
2611                                 break;
2612                         }
2613                         page = cdgetpage(&params);
2614
2615                         page->audio.port[LEFT_PORT].channels = RIGHT_CHANNEL;
2616                         page->audio.port[RIGHT_PORT].channels = RIGHT_CHANNEL;
2617                         page->audio.port[2].channels = 0;
2618                         page->audio.port[3].channels = 0;
2619                         error = cdsetmode(periph, &params);
2620                         kfree(params.mode_buf, M_SCSICD);
2621                         cam_periph_unlock(periph);
2622                 }
2623                 break;
2624         case CDIOCRESUME:
2625                 cam_periph_lock(periph);
2626                 error = cdpause(periph, 1);
2627                 cam_periph_unlock(periph);
2628                 break;
2629         case CDIOCPAUSE:
2630                 cam_periph_lock(periph);
2631                 error = cdpause(periph, 0);
2632                 cam_periph_unlock(periph);
2633                 break;
2634         case CDIOCSTART:
2635                 cam_periph_lock(periph);
2636                 error = cdstartunit(periph, 0);
2637                 cam_periph_unlock(periph);
2638                 break;
2639         case CDIOCCLOSE:
2640                 cam_periph_lock(periph);
2641                 error = cdstartunit(periph, 1);
2642                 cam_periph_unlock(periph);
2643                 break;
2644         case CDIOCSTOP:
2645                 cam_periph_lock(periph);
2646                 error = cdstopunit(periph, 0);
2647                 cam_periph_unlock(periph);
2648                 break;
2649         case CDIOCEJECT:
2650                 cam_periph_lock(periph);
2651                 error = cdstopunit(periph, 1);
2652                 cam_periph_unlock(periph);
2653                 break;
2654         case CDIOCALLOW:
2655                 cam_periph_lock(periph);
2656                 cdprevent(periph, PR_ALLOW);
2657                 cam_periph_unlock(periph);
2658                 break;
2659         case CDIOCPREVENT:
2660                 cam_periph_lock(periph);
2661                 cdprevent(periph, PR_PREVENT);
2662                 cam_periph_unlock(periph);
2663                 break;
2664         case CDIOCSETDEBUG:
2665                 /* sc_link->flags |= (SDEV_DB1 | SDEV_DB2); */
2666                 error = ENOTTY;
2667                 break;
2668         case CDIOCCLRDEBUG:
2669                 /* sc_link->flags &= ~(SDEV_DB1 | SDEV_DB2); */
2670                 error = ENOTTY;
2671                 break;
2672         case CDIOCRESET:
2673                 /* return (cd_reset(periph)); */
2674                 error = ENOTTY;
2675                 break;
2676         case CDRIOCREADSPEED:
2677                 cam_periph_lock(periph);
2678                 error = cdsetspeed(periph, *(u_int32_t *)addr, CDR_MAX_SPEED);
2679                 cam_periph_unlock(periph);
2680                 break;
2681         case CDRIOCWRITESPEED:
2682                 cam_periph_lock(periph);
2683                 error = cdsetspeed(periph, CDR_MAX_SPEED, *(u_int32_t *)addr);
2684                 cam_periph_unlock(periph);
2685                 break;
2686         case DVDIOCSENDKEY:
2687         case DVDIOCREPORTKEY: {
2688                 struct dvd_authinfo *authinfo;
2689
2690                 authinfo = (struct dvd_authinfo *)addr;
2691
2692                 cam_periph_lock(periph);
2693                 if (ap->a_cmd == DVDIOCREPORTKEY)
2694                         error = cdreportkey(periph, authinfo);
2695                 else
2696                         error = cdsendkey(periph, authinfo);
2697                 cam_periph_unlock(periph);
2698                 break;
2699         }
2700         case DVDIOCREADSTRUCTURE: {
2701                 struct dvd_struct *dvdstruct;
2702
2703                 dvdstruct = (struct dvd_struct *)addr;
2704
2705                 cam_periph_lock(periph);
2706                 error = cdreaddvdstructure(periph, dvdstruct);
2707                 cam_periph_unlock(periph);
2708
2709                 break;
2710         }
2711         default:
2712                 cam_periph_lock(periph);
2713                 error = cam_periph_ioctl(periph, ap->a_cmd, addr, cderror);
2714                 cam_periph_unlock(periph);
2715                 break;
2716         }
2717
2718         cam_periph_lock(periph);
2719         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("leaving cdioctl\n"));
2720         cam_periph_unhold(periph, 1);
2721
2722         return (error);
2723 }
2724
2725 static void
2726 cdprevent(struct cam_periph *periph, int action)
2727 {
2728         union   ccb *ccb;
2729         struct  cd_softc *softc;
2730         int     error;
2731
2732         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("entering cdprevent\n"));
2733
2734         softc = (struct cd_softc *)periph->softc;
2735
2736         if (((action == PR_ALLOW)
2737           && (softc->flags & CD_FLAG_DISC_LOCKED) == 0)
2738          || ((action == PR_PREVENT)
2739           && (softc->flags & CD_FLAG_DISC_LOCKED) != 0)) {
2740                 return;
2741         }
2742
2743         ccb = cdgetccb(periph, /* priority */ 1);
2744
2745         scsi_prevent(&ccb->csio,
2746                      /*retries*/ 1,
2747                      cddone,
2748                      MSG_SIMPLE_Q_TAG,
2749                      action,
2750                      SSD_FULL_SIZE,
2751                      /* timeout */60000);
2752
2753         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
2754                         /*sense_flags*/SF_RETRY_UA|SF_NO_PRINT);
2755
2756         xpt_release_ccb(ccb);
2757
2758         if (error == 0) {
2759                 if (action == PR_ALLOW)
2760                         softc->flags &= ~CD_FLAG_DISC_LOCKED;
2761                 else
2762                         softc->flags |= CD_FLAG_DISC_LOCKED;
2763         }
2764 }
2765
2766 int
2767 cdcheckmedia(struct cam_periph *periph)
2768 {
2769         struct cd_softc *softc;
2770         struct ioc_toc_header *toch;
2771         struct cd_toc_single leadout;
2772         struct ccb_getdev cgd;
2773         u_int32_t size, toclen;
2774         int error, num_entries, cdindex;
2775         int first_track_audio;
2776         struct disk_info info;
2777
2778         softc = (struct cd_softc *)periph->softc;
2779
2780         first_track_audio = -1;
2781         error = 0;
2782
2783         cdprevent(periph, PR_PREVENT);
2784
2785         /*
2786          * Set up disk info fields and tell the disk subsystem to reset
2787          * its internal copy of the label.
2788          */
2789         bzero(&info, sizeof(info));
2790         info.d_type = DTYPE_SCSI;
2791         info.d_dsflags &= ~DSO_COMPATLABEL;
2792         info.d_dsflags |= DSO_NOLABELS | DSO_COMPATPARTA;
2793
2794         /*
2795          * Grab the inquiry data to get the vendor and product names.
2796          * Put them in the typename and packname for the label.
2797          */
2798         xpt_setup_ccb(&cgd.ccb_h, periph->path, /*priority*/ 1);
2799         cgd.ccb_h.func_code = XPT_GDEV_TYPE;
2800         xpt_action((union ccb *)&cgd);
2801
2802 #if 0
2803         strncpy(label->d_typename, cgd.inq_data.vendor,
2804                 min(SID_VENDOR_SIZE, sizeof(label->d_typename)));
2805         strncpy(label->d_packname, cgd.inq_data.product,
2806                 min(SID_PRODUCT_SIZE, sizeof(label->d_packname)));
2807 #endif
2808         /*
2809          * Clear the valid media and TOC flags until we've verified that we
2810          * have both.
2811          */
2812         softc->flags &= ~(CD_FLAG_VALID_MEDIA|CD_FLAG_VALID_TOC);
2813
2814         /*
2815          * Get the disc size and block size.  If we can't get it, we don't
2816          * have media, most likely.
2817          */
2818         if ((error = cdsize(periph, &size)) != 0) {
2819                 /*
2820                  * Set a bogus sector size, so the slice code won't try to
2821                  * divide by 0 and panic the kernel.
2822                  */
2823                 info.d_media_blksize = 2048;
2824                 disk_setdiskinfo(&softc->disk, &info);
2825
2826                 /*
2827                  * Tell devstat(9) we don't have a blocksize.
2828                  */
2829                 softc->device_stats.flags |= DEVSTAT_BS_UNAVAILABLE;
2830
2831                 cdprevent(periph, PR_ALLOW);
2832
2833                 return (error);
2834         } else {
2835                 info.d_media_blksize = softc->params.blksize;
2836                 info.d_media_blocks = softc->params.disksize;
2837                 disk_setdiskinfo(&softc->disk, &info);
2838
2839                 /*
2840                  * We unconditionally (re)set the blocksize each time the
2841                  * CD device is opened.  This is because the CD can change,
2842                  * and therefore the blocksize might change.
2843                  * XXX problems here if some slice or partition is still
2844                  * open with the old size?
2845                  */
2846                 if ((softc->device_stats.flags & DEVSTAT_BS_UNAVAILABLE) != 0)
2847                         softc->device_stats.flags &= ~DEVSTAT_BS_UNAVAILABLE;
2848                 softc->device_stats.block_size = softc->params.blksize;
2849
2850                 softc->flags |= CD_FLAG_VALID_MEDIA;
2851         }
2852
2853         /*
2854          * Now we check the table of contents.  This (currently) is only
2855          * used for the CDIOCPLAYTRACKS ioctl.  It may be used later to do
2856          * things like present a separate entry in /dev for each track,
2857          * like that acd(4) driver does.
2858          */
2859         bzero(&softc->toc, sizeof(softc->toc));
2860         toch = &softc->toc.header;
2861
2862         /*
2863          * We will get errors here for media that doesn't have a table of
2864          * contents.  According to the MMC-3 spec: "When a Read TOC/PMA/ATIP
2865          * command is presented for a DDCD/CD-R/RW media, where the first TOC
2866          * has not been recorded (no complete session) and the Format codes
2867          * 0000b, 0001b, or 0010b are specified, this command shall be rejected
2868          * with an INVALID FIELD IN CDB.  Devices that are not capable of
2869          * reading an incomplete session on DDC/CD-R/RW media shall report
2870          * CANNOT READ MEDIUM - INCOMPATIBLE FORMAT."
2871          *
2872          * So this isn't fatal if we can't read the table of contents, it
2873          * just means that the user won't be able to issue the play tracks
2874          * ioctl, and likely lots of other stuff won't work either.  They
2875          * need to burn the CD before we can do a whole lot with it.  So
2876          * we don't print anything here if we get an error back.
2877          */
2878         error = cdreadtoc(periph, 0, 0, (u_int8_t *)toch, sizeof(*toch),
2879                           SF_NO_PRINT);
2880         /*
2881          * Errors in reading the table of contents aren't fatal, we just
2882          * won't have a valid table of contents cached.
2883          */
2884         if (error != 0) {
2885                 error = 0;
2886                 bzero(&softc->toc, sizeof(softc->toc));
2887                 goto bailout;
2888         }
2889
2890         if (softc->quirks & CD_Q_BCD_TRACKS) {
2891                 toch->starting_track = bcd2bin(toch->starting_track);
2892                 toch->ending_track = bcd2bin(toch->ending_track);
2893         }
2894
2895         /* Number of TOC entries, plus leadout */
2896         num_entries = (toch->ending_track - toch->starting_track) + 2;
2897
2898         if (num_entries <= 0)
2899                 goto bailout;
2900
2901         toclen = num_entries * sizeof(struct cd_toc_entry);
2902
2903         error = cdreadtoc(periph, CD_MSF_FORMAT, toch->starting_track,
2904                           (u_int8_t *)&softc->toc, toclen + sizeof(*toch),
2905                           SF_NO_PRINT);
2906         if (error != 0) {
2907                 error = 0;
2908                 bzero(&softc->toc, sizeof(softc->toc));
2909                 goto bailout;
2910         }
2911
2912         if (softc->quirks & CD_Q_BCD_TRACKS) {
2913                 toch->starting_track = bcd2bin(toch->starting_track);
2914                 toch->ending_track = bcd2bin(toch->ending_track);
2915         }
2916         toch->len = scsi_2btoul((uint8_t *)&toch->len);
2917
2918         /*
2919          * XXX KDM is this necessary?  Probably only if the drive doesn't
2920          * return leadout information with the table of contents.
2921          */
2922         cdindex = toch->starting_track + num_entries -1;
2923         if (cdindex == toch->ending_track + 1) {
2924
2925                 error = cdreadtoc(periph, CD_MSF_FORMAT, LEADOUT,
2926                                   (u_int8_t *)&leadout, sizeof(leadout),
2927                                   SF_NO_PRINT);
2928                 if (error != 0) {
2929                         error = 0;
2930                         goto bailout;
2931                 }
2932                 softc->toc.entries[cdindex - toch->starting_track] =
2933                         leadout.entry;
2934         }
2935         if (softc->quirks & CD_Q_BCD_TRACKS) {
2936                 for (cdindex = 0; cdindex < (num_entries - 1); cdindex++) {
2937                         softc->toc.entries[cdindex].track =
2938                                 bcd2bin(softc->toc.entries[cdindex].track);
2939                 }
2940         }
2941
2942         /*
2943          * Run through the TOC entries, find the first entry and determine
2944          * whether it is an audio or data track.
2945          */
2946         for (cdindex = 0; cdindex < (num_entries - 1); cdindex++) {
2947                 if (softc->toc.entries[cdindex].track == toch->starting_track) {
2948                         if (softc->toc.entries[cdindex].control & 0x04)
2949                                 first_track_audio = 0;
2950                         else
2951                                 first_track_audio = 1;
2952                         break;
2953                 }
2954         }
2955
2956         /*
2957          * If first_track_audio is non-zero, we either have an error (e.g.
2958          * couldn't find the starting track) or the first track is an audio
2959          * track.  If first_track_audio is 0, the first track is a data
2960          * track that could have a disklabel.  Attempt to read the
2961          * disklabel off the media, just in case the user put one there.
2962          */
2963         if (first_track_audio == 0) {
2964                 info.d_dsflags |= DSO_COMPATLABEL;
2965                 info.d_dsflags &= ~DSO_NOLABELS;
2966                 disk_setdiskinfo(&softc->disk, &info);
2967         }
2968         softc->flags |= CD_FLAG_VALID_TOC;
2969
2970 bailout:
2971         return (error);
2972 }
2973
2974 static int
2975 cdsize(struct cam_periph *periph, u_int32_t *size)
2976 {
2977         struct cd_softc *softc;
2978         union ccb *ccb;
2979         struct scsi_read_capacity_data *rcap_buf;
2980         int error;
2981
2982         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("entering cdsize\n"));
2983
2984         softc = (struct cd_softc *)periph->softc;
2985
2986         ccb = cdgetccb(periph, /* priority */ 1);
2987
2988         rcap_buf = kmalloc(sizeof(struct scsi_read_capacity_data),
2989                           M_SCSICD, M_INTWAIT | M_ZERO);
2990
2991         scsi_read_capacity(&ccb->csio,
2992                            /*retries*/ 1,
2993                            cddone,
2994                            MSG_SIMPLE_Q_TAG,
2995                            rcap_buf,
2996                            SSD_FULL_SIZE,
2997                            /* timeout */20000);
2998
2999         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3000                          /*sense_flags*/SF_RETRY_UA|SF_NO_PRINT);
3001
3002         xpt_release_ccb(ccb);
3003
3004         softc->params.disksize = scsi_4btoul(rcap_buf->addr) + 1;
3005         softc->params.blksize  = scsi_4btoul(rcap_buf->length);
3006         /*
3007          * SCSI-3 mandates that the reported blocksize shall be 2048.
3008          * Older drives sometimes report funny values, trim it down to
3009          * 2048, or other parts of the kernel will get confused.
3010          *
3011          * XXX we leave drives alone that might report 512 bytes, as
3012          * well as drives reporting more weird sizes like perhaps 4K.
3013          */
3014         if (softc->params.blksize > 2048 && softc->params.blksize <= 2352)
3015                 softc->params.blksize = 2048;
3016
3017         kfree(rcap_buf, M_SCSICD);
3018         *size = softc->params.disksize;
3019
3020         return (error);
3021
3022 }
3023
3024 static int
3025 cd6byteworkaround(union ccb *ccb)
3026 {
3027         u_int8_t *cdb;
3028         struct cam_periph *periph;
3029         struct cd_softc *softc;
3030         struct cd_mode_params *params;
3031         int frozen, found;
3032
3033         periph = xpt_path_periph(ccb->ccb_h.path);
3034         softc = (struct cd_softc *)periph->softc;
3035
3036         cdb = ccb->csio.cdb_io.cdb_bytes;
3037
3038         if ((ccb->ccb_h.flags & CAM_CDB_POINTER)
3039          || ((cdb[0] != MODE_SENSE_6)
3040           && (cdb[0] != MODE_SELECT_6)))
3041                 return (0);
3042
3043         /*
3044          * Because there is no convenient place to stash the overall
3045          * cd_mode_params structure pointer, we have to grab it like this.
3046          * This means that ALL MODE_SENSE and MODE_SELECT requests in the
3047          * cd(4) driver MUST go through cdgetmode() and cdsetmode()!
3048          *
3049          * XXX It would be nice if, at some point, we could increase the
3050          * number of available peripheral private pointers.  Both pointers
3051          * are currently used in most every peripheral driver.
3052          */
3053         found = 0;
3054
3055         STAILQ_FOREACH(params, &softc->mode_queue, links) {
3056                 if (params->mode_buf == ccb->csio.data_ptr) {
3057                         found = 1;
3058                         break;
3059                 }
3060         }
3061
3062         /*
3063          * This shouldn't happen.  All mode sense and mode select
3064          * operations in the cd(4) driver MUST go through cdgetmode() and
3065          * cdsetmode()!
3066          */
3067         if (found == 0) {
3068                 xpt_print(periph->path,
3069                     "mode buffer not found in mode queue!\n");
3070                 return (0);
3071         }
3072
3073         params->cdb_size = 10;
3074         softc->minimum_command_size = 10;
3075         xpt_print(ccb->ccb_h.path,
3076             "%s(6) failed, increasing minimum CDB size to 10 bytes\n",
3077             (cdb[0] == MODE_SENSE_6) ? "MODE_SENSE" : "MODE_SELECT");
3078
3079         if (cdb[0] == MODE_SENSE_6) {
3080                 struct scsi_mode_sense_10 ms10;
3081                 struct scsi_mode_sense_6 *ms6;
3082                 int len;
3083
3084                 ms6 = (struct scsi_mode_sense_6 *)cdb;
3085
3086                 bzero(&ms10, sizeof(ms10));
3087                 ms10.opcode = MODE_SENSE_10;
3088                 ms10.byte2 = ms6->byte2;
3089                 ms10.page = ms6->page;
3090
3091                 /*
3092                  * 10 byte mode header, block descriptor,
3093                  * sizeof(union cd_pages)
3094                  */
3095                 len = sizeof(struct cd_mode_data_10);
3096                 ccb->csio.dxfer_len = len;
3097
3098                 scsi_ulto2b(len, ms10.length);
3099                 ms10.control = ms6->control;
3100                 bcopy(&ms10, cdb, 10);
3101                 ccb->csio.cdb_len = 10;
3102         } else {
3103                 struct scsi_mode_select_10 ms10;
3104                 struct scsi_mode_select_6 *ms6;
3105                 struct scsi_mode_header_6 *header6;
3106                 struct scsi_mode_header_10 *header10;
3107                 struct scsi_mode_page_header *page_header;
3108                 int blk_desc_len, page_num, page_size, len;
3109
3110                 ms6 = (struct scsi_mode_select_6 *)cdb;
3111
3112                 bzero(&ms10, sizeof(ms10));
3113                 ms10.opcode = MODE_SELECT_10;
3114                 ms10.byte2 = ms6->byte2;
3115
3116                 header6 = (struct scsi_mode_header_6 *)params->mode_buf;
3117                 header10 = (struct scsi_mode_header_10 *)params->mode_buf;
3118
3119                 page_header = find_mode_page_6(header6);
3120                 page_num = page_header->page_code;
3121
3122                 blk_desc_len = header6->blk_desc_len;
3123
3124                 page_size = cdgetpagesize(page_num);
3125
3126                 if (page_size != (page_header->page_length +
3127                     sizeof(*page_header)))
3128                         page_size = page_header->page_length +
3129                                 sizeof(*page_header);
3130
3131                 len = sizeof(*header10) + blk_desc_len + page_size;
3132
3133                 len = min(params->alloc_len, len);
3134
3135                 /*
3136                  * Since the 6 byte parameter header is shorter than the 10
3137                  * byte parameter header, we need to copy the actual mode
3138                  * page data, and the block descriptor, if any, so things wind
3139                  * up in the right place.  The regions will overlap, but
3140                  * bcopy() does the right thing.
3141                  */
3142                 bcopy(params->mode_buf + sizeof(*header6),
3143                       params->mode_buf + sizeof(*header10),
3144                       len - sizeof(*header10));
3145
3146                 /* Make sure these fields are set correctly. */
3147                 scsi_ulto2b(0, header10->data_length);
3148                 header10->medium_type = 0;
3149                 scsi_ulto2b(blk_desc_len, header10->blk_desc_len);
3150
3151                 ccb->csio.dxfer_len = len;
3152
3153                 scsi_ulto2b(len, ms10.length);
3154                 ms10.control = ms6->control;
3155                 bcopy(&ms10, cdb, 10);
3156                 ccb->csio.cdb_len = 10;
3157         }
3158
3159         frozen = (ccb->ccb_h.status & CAM_DEV_QFRZN) != 0;
3160         ccb->ccb_h.status = CAM_REQUEUE_REQ;
3161         xpt_action(ccb);
3162         if (frozen) {
3163                 cam_release_devq(ccb->ccb_h.path,
3164                                  /*relsim_flags*/0,
3165                                  /*openings*/0,
3166                                  /*timeout*/0,
3167                                  /*getcount_only*/0);
3168         }
3169
3170         return (ERESTART);
3171 }
3172
3173 static int
3174 cderror(union ccb *ccb, u_int32_t cam_flags, u_int32_t sense_flags)
3175 {
3176         struct cd_softc *softc;
3177         struct cam_periph *periph;
3178         int error;
3179
3180         periph = xpt_path_periph(ccb->ccb_h.path);
3181         softc = (struct cd_softc *)periph->softc;
3182
3183         error = 0;
3184
3185         /*
3186          * We use a status of CAM_REQ_INVALID as shorthand -- if a 6 byte
3187          * CDB comes back with this particular error, try transforming it
3188          * into the 10 byte version.
3189          */
3190         if ((ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_INVALID) {
3191                 error = cd6byteworkaround(ccb);
3192         } else if (((ccb->ccb_h.status & CAM_STATUS_MASK) ==
3193                      CAM_SCSI_STATUS_ERROR)
3194          && (ccb->ccb_h.status & CAM_AUTOSNS_VALID)
3195          && (ccb->csio.scsi_status == SCSI_STATUS_CHECK_COND)
3196          && ((ccb->ccb_h.flags & CAM_SENSE_PHYS) == 0)
3197          && ((ccb->ccb_h.flags & CAM_SENSE_PTR) == 0)) {
3198                 int sense_key, error_code, asc, ascq;
3199
3200                 scsi_extract_sense(&ccb->csio.sense_data,
3201                                    &error_code, &sense_key, &asc, &ascq);
3202                 if (sense_key == SSD_KEY_ILLEGAL_REQUEST)
3203                         error = cd6byteworkaround(ccb);
3204         }
3205
3206         if (error == ERESTART)
3207                 return (error);
3208
3209         /*
3210          * XXX
3211          * Until we have a better way of doing pack validation,
3212          * don't treat UAs as errors.
3213          */
3214         sense_flags |= SF_RETRY_UA;
3215         return (cam_periph_error(ccb, cam_flags, sense_flags,
3216                                  &softc->saved_ccb));
3217 }
3218
3219 /*
3220  * Read table of contents
3221  */
3222 static int
3223 cdreadtoc(struct cam_periph *periph, u_int32_t mode, u_int32_t start,
3224           u_int8_t *data, u_int32_t len, u_int32_t sense_flags)
3225 {
3226         struct scsi_read_toc *scsi_cmd;
3227         u_int32_t ntoc;
3228         struct ccb_scsiio *csio;
3229         union ccb *ccb;
3230         int error;
3231
3232         ntoc = len;
3233         error = 0;
3234
3235         ccb = cdgetccb(periph, /* priority */ 1);
3236
3237         csio = &ccb->csio;
3238
3239         cam_fill_csio(csio,
3240                       /* retries */ 1,
3241                       /* cbfcnp */ cddone,
3242                       /* flags */ CAM_DIR_IN,
3243                       /* tag_action */ MSG_SIMPLE_Q_TAG,
3244                       /* data_ptr */ data,
3245                       /* dxfer_len */ len,
3246                       /* sense_len */ SSD_FULL_SIZE,
3247                       sizeof(struct scsi_read_toc),
3248                       /* timeout */ 50000);
3249
3250         scsi_cmd = (struct scsi_read_toc *)&csio->cdb_io.cdb_bytes;
3251         bzero (scsi_cmd, sizeof(*scsi_cmd));
3252
3253         if (mode == CD_MSF_FORMAT)
3254                 scsi_cmd->byte2 |= CD_MSF;
3255         scsi_cmd->from_track = start;
3256         /* scsi_ulto2b(ntoc, (u_int8_t *)scsi_cmd->data_len); */
3257         scsi_cmd->data_len[0] = (ntoc) >> 8;
3258         scsi_cmd->data_len[1] = (ntoc) & 0xff;
3259
3260         scsi_cmd->op_code = READ_TOC;
3261
3262         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3263                          /*sense_flags*/SF_RETRY_UA | sense_flags);
3264
3265         xpt_release_ccb(ccb);
3266
3267         return(error);
3268 }
3269
3270 static int
3271 cdreadsubchannel(struct cam_periph *periph, u_int32_t mode,
3272                  u_int32_t format, int track,
3273                  struct cd_sub_channel_info *data, u_int32_t len)
3274 {
3275         struct scsi_read_subchannel *scsi_cmd;
3276         struct ccb_scsiio *csio;
3277         union ccb *ccb;
3278         int error;
3279
3280         error = 0;
3281
3282         ccb = cdgetccb(periph, /* priority */ 1);
3283
3284         csio = &ccb->csio;
3285
3286         cam_fill_csio(csio,
3287                       /* retries */ 1,
3288                       /* cbfcnp */ cddone,
3289                       /* flags */ CAM_DIR_IN,
3290                       /* tag_action */ MSG_SIMPLE_Q_TAG,
3291                       /* data_ptr */ (u_int8_t *)data,
3292                       /* dxfer_len */ len,
3293                       /* sense_len */ SSD_FULL_SIZE,
3294                       sizeof(struct scsi_read_subchannel),
3295                       /* timeout */ 50000);
3296
3297         scsi_cmd = (struct scsi_read_subchannel *)&csio->cdb_io.cdb_bytes;
3298         bzero (scsi_cmd, sizeof(*scsi_cmd));
3299
3300         scsi_cmd->op_code = READ_SUBCHANNEL;
3301         if (mode == CD_MSF_FORMAT)
3302                 scsi_cmd->byte1 |= CD_MSF;
3303         scsi_cmd->byte2 = SRS_SUBQ;
3304         scsi_cmd->subchan_format = format;
3305         scsi_cmd->track = track;
3306         scsi_ulto2b(len, (u_int8_t *)scsi_cmd->data_len);
3307         scsi_cmd->control = 0;
3308
3309         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3310                          /*sense_flags*/SF_RETRY_UA);
3311
3312         xpt_release_ccb(ccb);
3313
3314         return(error);
3315 }
3316
3317 /*
3318  * All MODE_SENSE requests in the cd(4) driver MUST go through this
3319  * routine.  See comments in cd6byteworkaround() for details.
3320  */
3321 static int
3322 cdgetmode(struct cam_periph *periph, struct cd_mode_params *data,
3323           u_int32_t page)
3324 {
3325         struct ccb_scsiio *csio;
3326         struct cd_softc *softc;
3327         union ccb *ccb;
3328         int param_len;
3329         int error;
3330
3331         softc = (struct cd_softc *)periph->softc;
3332
3333         ccb = cdgetccb(periph, /* priority */ 1);
3334
3335         csio = &ccb->csio;
3336
3337         data->cdb_size = softc->minimum_command_size;
3338         if (data->cdb_size < 10)
3339                 param_len = sizeof(struct cd_mode_data);
3340         else
3341                 param_len = sizeof(struct cd_mode_data_10);
3342
3343         /* Don't say we've got more room than we actually allocated */
3344         param_len = min(param_len, data->alloc_len);
3345
3346         scsi_mode_sense_len(csio,
3347                             /* retries */ 1,
3348                             /* cbfcnp */ cddone,
3349                             /* tag_action */ MSG_SIMPLE_Q_TAG,
3350                             /* dbd */ 0,
3351                             /* page_code */ SMS_PAGE_CTRL_CURRENT,
3352                             /* page */ page,
3353                             /* param_buf */ data->mode_buf,
3354                             /* param_len */ param_len,
3355                             /* minimum_cmd_size */ softc->minimum_command_size,
3356                             /* sense_len */ SSD_FULL_SIZE,
3357                             /* timeout */ 50000);
3358
3359         /*
3360          * It would be nice not to have to do this, but there's no
3361          * available pointer in the CCB that would allow us to stuff the
3362          * mode params structure in there and retrieve it in
3363          * cd6byteworkaround(), so we can set the cdb size.  The cdb size
3364          * lets the caller know what CDB size we ended up using, so they
3365          * can find the actual mode page offset.
3366          */
3367         STAILQ_INSERT_TAIL(&softc->mode_queue, data, links);
3368
3369         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3370                          /*sense_flags*/SF_RETRY_UA);
3371
3372         xpt_release_ccb(ccb);
3373
3374         STAILQ_REMOVE(&softc->mode_queue, data, cd_mode_params, links);
3375
3376         /*
3377          * This is a bit of belt-and-suspenders checking, but if we run
3378          * into a situation where the target sends back multiple block
3379          * descriptors, we might not have enough space in the buffer to
3380          * see the whole mode page.  Better to return an error than
3381          * potentially access memory beyond our malloced region.
3382          */
3383         if (error == 0) {
3384                 u_int32_t data_len;
3385
3386                 if (data->cdb_size == 10) {
3387                         struct scsi_mode_header_10 *hdr10;
3388
3389                         hdr10 = (struct scsi_mode_header_10 *)data->mode_buf;
3390                         data_len = scsi_2btoul(hdr10->data_length);
3391                         data_len += sizeof(hdr10->data_length);
3392                 } else {
3393                         struct scsi_mode_header_6 *hdr6;
3394
3395                         hdr6 = (struct scsi_mode_header_6 *)data->mode_buf;
3396                         data_len = hdr6->data_length;
3397                         data_len += sizeof(hdr6->data_length);
3398                 }
3399
3400                 /*
3401                  * Complain if there is more mode data available than we
3402                  * allocated space for.  This could potentially happen if
3403                  * we miscalculated the page length for some reason, if the
3404                  * drive returns multiple block descriptors, or if it sets
3405                  * the data length incorrectly.
3406                  */
3407                 if (data_len > data->alloc_len) {
3408                         xpt_print(periph->path, "allocated modepage %d length "
3409                             "%d < returned length %d\n", page, data->alloc_len,
3410                             data_len);
3411                         error = ENOSPC;
3412                 }
3413         }
3414         return (error);
3415 }
3416
3417 /*
3418  * All MODE_SELECT requests in the cd(4) driver MUST go through this
3419  * routine.  See comments in cd6byteworkaround() for details.
3420  */
3421 static int
3422 cdsetmode(struct cam_periph *periph, struct cd_mode_params *data)
3423 {
3424         struct ccb_scsiio *csio;
3425         struct cd_softc *softc;
3426         union ccb *ccb;
3427         int cdb_size, param_len;
3428         int error;
3429
3430         softc = (struct cd_softc *)periph->softc;
3431
3432         ccb = cdgetccb(periph, /* priority */ 1);
3433
3434         csio = &ccb->csio;
3435
3436         error = 0;
3437
3438         /*
3439          * If the data is formatted for the 10 byte version of the mode
3440          * select parameter list, we need to use the 10 byte CDB.
3441          * Otherwise, we use whatever the stored minimum command size.
3442          */
3443         if (data->cdb_size == 10)
3444                 cdb_size = data->cdb_size;
3445         else
3446                 cdb_size = softc->minimum_command_size;
3447
3448         if (cdb_size >= 10) {
3449                 struct scsi_mode_header_10 *mode_header;
3450                 u_int32_t data_len;
3451
3452                 mode_header = (struct scsi_mode_header_10 *)data->mode_buf;
3453
3454                 data_len = scsi_2btoul(mode_header->data_length);
3455
3456                 scsi_ulto2b(0, mode_header->data_length);
3457                 /*
3458                  * SONY drives do not allow a mode select with a medium_type
3459                  * value that has just been returned by a mode sense; use a
3460                  * medium_type of 0 (Default) instead.
3461                  */
3462                 mode_header->medium_type = 0;
3463
3464                 /*
3465                  * Pass back whatever the drive passed to us, plus the size
3466                  * of the data length field.
3467                  */
3468                 param_len = data_len + sizeof(mode_header->data_length);
3469
3470         } else {
3471                 struct scsi_mode_header_6 *mode_header;
3472
3473                 mode_header = (struct scsi_mode_header_6 *)data->mode_buf;
3474
3475                 param_len = mode_header->data_length + 1;
3476
3477                 mode_header->data_length = 0;
3478                 /*
3479                  * SONY drives do not allow a mode select with a medium_type
3480                  * value that has just been returned by a mode sense; use a
3481                  * medium_type of 0 (Default) instead.
3482                  */
3483                 mode_header->medium_type = 0;
3484         }
3485
3486         /* Don't say we've got more room than we actually allocated */
3487         param_len = min(param_len, data->alloc_len);
3488
3489         scsi_mode_select_len(csio,
3490                              /* retries */ 1,
3491                              /* cbfcnp */ cddone,
3492                              /* tag_action */ MSG_SIMPLE_Q_TAG,
3493                              /* scsi_page_fmt */ 1,
3494                              /* save_pages */ 0,
3495                              /* param_buf */ data->mode_buf,
3496                              /* param_len */ param_len,
3497                              /* minimum_cmd_size */ cdb_size,
3498                              /* sense_len */ SSD_FULL_SIZE,
3499                              /* timeout */ 50000);
3500
3501         /* See comments in cdgetmode() and cd6byteworkaround(). */
3502         STAILQ_INSERT_TAIL(&softc->mode_queue, data, links);
3503
3504         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3505                          /*sense_flags*/SF_RETRY_UA);
3506
3507         xpt_release_ccb(ccb);
3508
3509         STAILQ_REMOVE(&softc->mode_queue, data, cd_mode_params, links);
3510
3511         return (error);
3512 }
3513
3514
3515
3516 static int
3517 cdplay(struct cam_periph *periph, u_int32_t blk, u_int32_t len)
3518 {
3519         struct ccb_scsiio *csio;
3520         union ccb *ccb;
3521         int error;
3522         u_int8_t cdb_len;
3523
3524         error = 0;
3525         ccb = cdgetccb(periph, /* priority */ 1);
3526         csio = &ccb->csio;
3527         /*
3528          * Use the smallest possible command to perform the operation.
3529          */
3530         if ((len & 0xffff0000) == 0) {
3531                 /*
3532                  * We can fit in a 10 byte cdb.
3533                  */
3534                 struct scsi_play_10 *scsi_cmd;
3535
3536                 scsi_cmd = (struct scsi_play_10 *)&csio->cdb_io.cdb_bytes;
3537                 bzero (scsi_cmd, sizeof(*scsi_cmd));
3538                 scsi_cmd->op_code = PLAY_10;
3539                 scsi_ulto4b(blk, (u_int8_t *)scsi_cmd->blk_addr);
3540                 scsi_ulto2b(len, (u_int8_t *)scsi_cmd->xfer_len);
3541                 cdb_len = sizeof(*scsi_cmd);
3542         } else  {
3543                 struct scsi_play_12 *scsi_cmd;
3544
3545                 scsi_cmd = (struct scsi_play_12 *)&csio->cdb_io.cdb_bytes;
3546                 bzero (scsi_cmd, sizeof(*scsi_cmd));
3547                 scsi_cmd->op_code = PLAY_12;
3548                 scsi_ulto4b(blk, (u_int8_t *)scsi_cmd->blk_addr);
3549                 scsi_ulto4b(len, (u_int8_t *)scsi_cmd->xfer_len);
3550                 cdb_len = sizeof(*scsi_cmd);
3551         }
3552         cam_fill_csio(csio,
3553                       /*retries*/2,
3554                       cddone,
3555                       /*flags*/CAM_DIR_NONE,
3556                       MSG_SIMPLE_Q_TAG,
3557                       /*dataptr*/NULL,
3558                       /*datalen*/0,
3559                       /*sense_len*/SSD_FULL_SIZE,
3560                       cdb_len,
3561                       /*timeout*/50 * 1000);
3562
3563         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3564                          /*sense_flags*/SF_RETRY_UA);
3565
3566         xpt_release_ccb(ccb);
3567
3568         return(error);
3569 }
3570
3571 static int
3572 cdplaymsf(struct cam_periph *periph, u_int32_t startm, u_int32_t starts,
3573           u_int32_t startf, u_int32_t endm, u_int32_t ends, u_int32_t endf)
3574 {
3575         struct scsi_play_msf *scsi_cmd;
3576         struct ccb_scsiio *csio;
3577         union ccb *ccb;
3578         int error;
3579
3580         error = 0;
3581
3582         ccb = cdgetccb(periph, /* priority */ 1);
3583
3584         csio = &ccb->csio;
3585
3586         cam_fill_csio(csio,
3587                       /* retries */ 1,
3588                       /* cbfcnp */ cddone,
3589                       /* flags */ CAM_DIR_NONE,
3590                       /* tag_action */ MSG_SIMPLE_Q_TAG,
3591                       /* data_ptr */ NULL,
3592                       /* dxfer_len */ 0,
3593                       /* sense_len */ SSD_FULL_SIZE,
3594                       sizeof(struct scsi_play_msf),
3595                       /* timeout */ 50000);
3596
3597         scsi_cmd = (struct scsi_play_msf *)&csio->cdb_io.cdb_bytes;
3598         bzero (scsi_cmd, sizeof(*scsi_cmd));
3599
3600         scsi_cmd->op_code = PLAY_MSF;
3601         scsi_cmd->start_m = startm;
3602         scsi_cmd->start_s = starts;
3603         scsi_cmd->start_f = startf;
3604         scsi_cmd->end_m = endm;
3605         scsi_cmd->end_s = ends;
3606         scsi_cmd->end_f = endf;
3607
3608         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3609                          /*sense_flags*/SF_RETRY_UA);
3610
3611         xpt_release_ccb(ccb);
3612
3613         return(error);
3614 }
3615
3616
3617 static int
3618 cdplaytracks(struct cam_periph *periph, u_int32_t strack, u_int32_t sindex,
3619              u_int32_t etrack, u_int32_t eindex)
3620 {
3621         struct scsi_play_track *scsi_cmd;
3622         struct ccb_scsiio *csio;
3623         union ccb *ccb;
3624         int error;
3625
3626         error = 0;
3627
3628         ccb = cdgetccb(periph, /* priority */ 1);
3629
3630         csio = &ccb->csio;
3631
3632         cam_fill_csio(csio,
3633                       /* retries */ 1,
3634                       /* cbfcnp */ cddone,
3635                       /* flags */ CAM_DIR_NONE,
3636                       /* tag_action */ MSG_SIMPLE_Q_TAG,
3637                       /* data_ptr */ NULL,
3638                       /* dxfer_len */ 0,
3639                       /* sense_len */ SSD_FULL_SIZE,
3640                       sizeof(struct scsi_play_track),
3641                       /* timeout */ 50000);
3642
3643         scsi_cmd = (struct scsi_play_track *)&csio->cdb_io.cdb_bytes;
3644         bzero (scsi_cmd, sizeof(*scsi_cmd));
3645
3646         scsi_cmd->op_code = PLAY_TRACK;
3647         scsi_cmd->start_track = strack;
3648         scsi_cmd->start_index = sindex;
3649         scsi_cmd->end_track = etrack;
3650         scsi_cmd->end_index = eindex;
3651
3652         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3653                          /*sense_flags*/SF_RETRY_UA);
3654
3655         xpt_release_ccb(ccb);
3656
3657         return(error);
3658 }
3659
3660 static int
3661 cdpause(struct cam_periph *periph, u_int32_t go)
3662 {
3663         struct scsi_pause *scsi_cmd;
3664         struct ccb_scsiio *csio;
3665         union ccb *ccb;
3666         int error;
3667
3668         error = 0;
3669
3670         ccb = cdgetccb(periph, /* priority */ 1);
3671
3672         csio = &ccb->csio;
3673
3674         cam_fill_csio(csio,
3675                       /* retries */ 1,
3676                       /* cbfcnp */ cddone,
3677                       /* flags */ CAM_DIR_NONE,
3678                       /* tag_action */ MSG_SIMPLE_Q_TAG,
3679                       /* data_ptr */ NULL,
3680                       /* dxfer_len */ 0,
3681                       /* sense_len */ SSD_FULL_SIZE,
3682                       sizeof(struct scsi_pause),
3683                       /* timeout */ 50000);
3684
3685         scsi_cmd = (struct scsi_pause *)&csio->cdb_io.cdb_bytes;
3686         bzero (scsi_cmd, sizeof(*scsi_cmd));
3687
3688         scsi_cmd->op_code = PAUSE;
3689         scsi_cmd->resume = go;
3690
3691         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3692                          /*sense_flags*/SF_RETRY_UA);
3693
3694         xpt_release_ccb(ccb);
3695
3696         return(error);
3697 }
3698
3699 static int
3700 cdstartunit(struct cam_periph *periph, int load)
3701 {
3702         union ccb *ccb;
3703         int error;
3704
3705         error = 0;
3706
3707         ccb = cdgetccb(periph, /* priority */ 1);
3708
3709         scsi_start_stop(&ccb->csio,
3710                         /* retries */ 1,
3711                         /* cbfcnp */ cddone,
3712                         /* tag_action */ MSG_SIMPLE_Q_TAG,
3713                         /* start */ TRUE,
3714                         /* load_eject */ load,
3715                         /* immediate */ FALSE,
3716                         /* sense_len */ SSD_FULL_SIZE,
3717                         /* timeout */ 50000);
3718
3719         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3720                          /*sense_flags*/SF_RETRY_UA);
3721
3722         xpt_release_ccb(ccb);
3723
3724         return(error);
3725 }
3726
3727 static int
3728 cdstopunit(struct cam_periph *periph, u_int32_t eject)
3729 {
3730         union ccb *ccb;
3731         int error;
3732
3733         error = 0;
3734
3735         ccb = cdgetccb(periph, /* priority */ 1);
3736
3737         scsi_start_stop(&ccb->csio,
3738                         /* retries */ 1,
3739                         /* cbfcnp */ cddone,
3740                         /* tag_action */ MSG_SIMPLE_Q_TAG,
3741                         /* start */ FALSE,
3742                         /* load_eject */ eject,
3743                         /* immediate */ FALSE,
3744                         /* sense_len */ SSD_FULL_SIZE,
3745                         /* timeout */ 50000);
3746
3747         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3748                          /*sense_flags*/SF_RETRY_UA);
3749
3750         xpt_release_ccb(ccb);
3751
3752         return(error);
3753 }
3754
3755 static int
3756 cdsetspeed(struct cam_periph *periph, u_int32_t rdspeed, u_int32_t wrspeed)
3757 {
3758         struct scsi_set_speed *scsi_cmd;
3759         struct ccb_scsiio *csio;
3760         union ccb *ccb;
3761         int error;
3762
3763         error = 0;
3764         ccb = cdgetccb(periph, /* priority */ 1);
3765         csio = &ccb->csio;
3766
3767         /* Preserve old behavior: units in multiples of CDROM speed */
3768         if (rdspeed < 177)
3769                 rdspeed *= 177;
3770         if (wrspeed < 177)
3771                 wrspeed *= 177;
3772
3773         cam_fill_csio(csio,
3774                       /* retries */ 1,
3775                       /* cbfcnp */ cddone,
3776                       /* flags */ CAM_DIR_NONE,
3777                       /* tag_action */ MSG_SIMPLE_Q_TAG,
3778                       /* data_ptr */ NULL,
3779                       /* dxfer_len */ 0,
3780                       /* sense_len */ SSD_FULL_SIZE,
3781                       sizeof(struct scsi_set_speed),
3782                       /* timeout */ 50000);
3783
3784         scsi_cmd = (struct scsi_set_speed *)&csio->cdb_io.cdb_bytes;
3785         bzero(scsi_cmd, sizeof(*scsi_cmd));
3786
3787         scsi_cmd->opcode = SET_CD_SPEED;
3788         scsi_ulto2b(rdspeed, scsi_cmd->readspeed);
3789         scsi_ulto2b(wrspeed, scsi_cmd->writespeed);
3790
3791         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3792                          /*sense_flags*/SF_RETRY_UA);
3793
3794         xpt_release_ccb(ccb);
3795
3796         return(error);
3797 }
3798
3799 static int
3800 cdreportkey(struct cam_periph *periph, struct dvd_authinfo *authinfo)
3801 {
3802         union ccb *ccb;
3803         u_int8_t *databuf;
3804         u_int32_t lba;
3805         int error;
3806         int length;
3807
3808         error = 0;
3809         databuf = NULL;
3810         lba = 0;
3811
3812         ccb = cdgetccb(periph, /* priority */ 1);
3813
3814         switch (authinfo->format) {
3815         case DVD_REPORT_AGID:
3816                 length = sizeof(struct scsi_report_key_data_agid);
3817                 break;
3818         case DVD_REPORT_CHALLENGE:
3819                 length = sizeof(struct scsi_report_key_data_challenge);
3820                 break;
3821         case DVD_REPORT_KEY1:
3822                 length = sizeof(struct scsi_report_key_data_key1_key2);
3823                 break;
3824         case DVD_REPORT_TITLE_KEY:
3825                 length = sizeof(struct scsi_report_key_data_title);
3826                 /* The lba field is only set for the title key */
3827                 lba = authinfo->lba;
3828                 break;
3829         case DVD_REPORT_ASF:
3830                 length = sizeof(struct scsi_report_key_data_asf);
3831                 break;
3832         case DVD_REPORT_RPC:
3833                 length = sizeof(struct scsi_report_key_data_rpc);
3834                 break;
3835         case DVD_INVALIDATE_AGID:
3836                 length = 0;
3837                 break;
3838         default:
3839                 error = EINVAL;
3840                 goto bailout;
3841                 break; /* NOTREACHED */
3842         }
3843
3844         if (length != 0) {
3845                 databuf = kmalloc(length, M_DEVBUF, M_INTWAIT | M_ZERO);
3846         } else {
3847                 databuf = NULL;
3848         }
3849
3850
3851         scsi_report_key(&ccb->csio,
3852                         /* retries */ 1,
3853                         /* cbfcnp */ cddone,
3854                         /* tag_action */ MSG_SIMPLE_Q_TAG,
3855                         /* lba */ lba,
3856                         /* agid */ authinfo->agid,
3857                         /* key_format */ authinfo->format,
3858                         /* data_ptr */ databuf,
3859                         /* dxfer_len */ length,
3860                         /* sense_len */ SSD_FULL_SIZE,
3861                         /* timeout */ 50000);
3862
3863         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
3864                          /*sense_flags*/SF_RETRY_UA);
3865
3866         if (error != 0)
3867                 goto bailout;
3868
3869         if (ccb->csio.resid != 0) {
3870                 xpt_print(periph->path, "warning, residual for report key "
3871                     "command is %d\n", ccb->csio.resid);
3872         }
3873
3874         switch(authinfo->format) {
3875         case DVD_REPORT_AGID: {
3876                 struct scsi_report_key_data_agid *agid_data;
3877
3878                 agid_data = (struct scsi_report_key_data_agid *)databuf;
3879
3880                 authinfo->agid = (agid_data->agid & RKD_AGID_MASK) >>
3881                         RKD_AGID_SHIFT;
3882                 break;
3883         }
3884         case DVD_REPORT_CHALLENGE: {
3885                 struct scsi_report_key_data_challenge *chal_data;
3886
3887                 chal_data = (struct scsi_report_key_data_challenge *)databuf;
3888
3889                 bcopy(chal_data->challenge_key, authinfo->keychal,
3890                       min(sizeof(chal_data->challenge_key),
3891                           sizeof(authinfo->keychal)));
3892                 break;
3893         }
3894         case DVD_REPORT_KEY1: {
3895                 struct scsi_report_key_data_key1_key2 *key1_data;
3896
3897                 key1_data = (struct scsi_report_key_data_key1_key2 *)databuf;
3898
3899                 bcopy(key1_data->key1, authinfo->keychal,
3900                       min(sizeof(key1_data->key1), sizeof(authinfo->keychal)));
3901                 break;
3902         }
3903         case DVD_REPORT_TITLE_KEY: {
3904                 struct scsi_report_key_data_title *title_data;
3905
3906                 title_data = (struct scsi_report_key_data_title *)databuf;
3907
3908                 authinfo->cpm = (title_data->byte0 & RKD_TITLE_CPM) >>
3909                         RKD_TITLE_CPM_SHIFT;
3910                 authinfo->cp_sec = (title_data->byte0 & RKD_TITLE_CP_SEC) >>
3911                         RKD_TITLE_CP_SEC_SHIFT;
3912                 authinfo->cgms = (title_data->byte0 & RKD_TITLE_CMGS_MASK) >>
3913                         RKD_TITLE_CMGS_SHIFT;
3914                 bcopy(title_data->title_key, authinfo->keychal,
3915                       min(sizeof(title_data->title_key),
3916                           sizeof(authinfo->keychal)));
3917                 break;
3918         }
3919         case DVD_REPORT_ASF: {
3920                 struct scsi_report_key_data_asf *asf_data;
3921
3922                 asf_data = (struct scsi_report_key_data_asf *)databuf;
3923
3924                 authinfo->asf = asf_data->success & RKD_ASF_SUCCESS;
3925                 break;
3926         }
3927         case DVD_REPORT_RPC: {
3928                 struct scsi_report_key_data_rpc *rpc_data;
3929
3930                 rpc_data = (struct scsi_report_key_data_rpc *)databuf;
3931
3932                 authinfo->reg_type = (rpc_data->byte4 & RKD_RPC_TYPE_MASK) >>
3933                         RKD_RPC_TYPE_SHIFT;
3934                 authinfo->vend_rsts =
3935                         (rpc_data->byte4 & RKD_RPC_VENDOR_RESET_MASK) >>
3936                         RKD_RPC_VENDOR_RESET_SHIFT;
3937                 authinfo->user_rsts = rpc_data->byte4 & RKD_RPC_USER_RESET_MASK;
3938                 authinfo->region = rpc_data->region_mask;
3939                 authinfo->rpc_scheme = rpc_data->rpc_scheme1;
3940                 break;
3941         }
3942         case DVD_INVALIDATE_AGID:
3943                 break;
3944         default:
3945                 /* This should be impossible, since we checked above */
3946                 error = EINVAL;
3947                 goto bailout;
3948                 break; /* NOTREACHED */
3949         }
3950 bailout:
3951         if (databuf != NULL)
3952                 kfree(databuf, M_DEVBUF);
3953
3954         xpt_release_ccb(ccb);
3955
3956         return(error);
3957 }
3958
3959 static int
3960 cdsendkey(struct cam_periph *periph, struct dvd_authinfo *authinfo)
3961 {
3962         union ccb *ccb;
3963         u_int8_t *databuf;
3964         int length;
3965         int error;
3966
3967         error = 0;
3968         databuf = NULL;
3969
3970         ccb = cdgetccb(periph, /* priority */ 1);
3971
3972         switch(authinfo->format) {
3973         case DVD_SEND_CHALLENGE: {
3974                 struct scsi_report_key_data_challenge *challenge_data;
3975
3976                 length = sizeof(*challenge_data);
3977
3978                 challenge_data = kmalloc(length, M_DEVBUF, M_INTWAIT | M_ZERO);
3979
3980                 databuf = (u_int8_t *)challenge_data;
3981
3982                 scsi_ulto2b(length - sizeof(challenge_data->data_len),
3983                             challenge_data->data_len);
3984
3985                 bcopy(authinfo->keychal, challenge_data->challenge_key,
3986                       min(sizeof(authinfo->keychal),
3987                           sizeof(challenge_data->challenge_key)));
3988                 break;
3989         }
3990         case DVD_SEND_KEY2: {
3991                 struct scsi_report_key_data_key1_key2 *key2_data;
3992
3993                 length = sizeof(*key2_data);
3994
3995                 key2_data = kmalloc(length, M_DEVBUF, M_INTWAIT | M_ZERO);
3996
3997                 databuf = (u_int8_t *)key2_data;
3998
3999                 scsi_ulto2b(length - sizeof(key2_data->data_len),
4000                             key2_data->data_len);
4001
4002                 bcopy(authinfo->keychal, key2_data->key1,
4003                       min(sizeof(authinfo->keychal), sizeof(key2_data->key1)));
4004
4005                 break;
4006         }
4007         case DVD_SEND_RPC: {
4008                 struct scsi_send_key_data_rpc *rpc_data;
4009
4010                 length = sizeof(*rpc_data);
4011
4012                 rpc_data = kmalloc(length, M_DEVBUF, M_INTWAIT | M_ZERO);
4013
4014                 databuf = (u_int8_t *)rpc_data;
4015
4016                 scsi_ulto2b(length - sizeof(rpc_data->data_len),
4017                             rpc_data->data_len);
4018
4019                 rpc_data->region_code = authinfo->region;
4020                 break;
4021         }
4022         default:
4023                 error = EINVAL;
4024                 goto bailout;
4025                 break; /* NOTREACHED */
4026         }
4027
4028         scsi_send_key(&ccb->csio,
4029                       /* retries */ 1,
4030                       /* cbfcnp */ cddone,
4031                       /* tag_action */ MSG_SIMPLE_Q_TAG,
4032                       /* agid */ authinfo->agid,
4033                       /* key_format */ authinfo->format,
4034                       /* data_ptr */ databuf,
4035                       /* dxfer_len */ length,
4036                       /* sense_len */ SSD_FULL_SIZE,
4037                       /* timeout */ 50000);
4038
4039         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
4040                          /*sense_flags*/SF_RETRY_UA);
4041
4042 bailout:
4043
4044         if (databuf != NULL)
4045                 kfree(databuf, M_DEVBUF);
4046
4047         xpt_release_ccb(ccb);
4048
4049         return(error);
4050 }
4051
4052 static int
4053 cdreaddvdstructure(struct cam_periph *periph, struct dvd_struct *dvdstruct)
4054 {
4055         union ccb *ccb;
4056         u_int8_t *databuf;
4057         u_int32_t address;
4058         int error;
4059         int length;
4060
4061         error = 0;
4062         databuf = NULL;
4063         /* The address is reserved for many of the formats */
4064         address = 0;
4065
4066         ccb = cdgetccb(periph, /* priority */ 1);
4067
4068         switch(dvdstruct->format) {
4069         case DVD_STRUCT_PHYSICAL:
4070                 length = sizeof(struct scsi_read_dvd_struct_data_physical);
4071                 break;
4072         case DVD_STRUCT_COPYRIGHT:
4073                 length = sizeof(struct scsi_read_dvd_struct_data_copyright);
4074                 break;
4075         case DVD_STRUCT_DISCKEY:
4076                 length = sizeof(struct scsi_read_dvd_struct_data_disc_key);
4077                 break;
4078         case DVD_STRUCT_BCA:
4079                 length = sizeof(struct scsi_read_dvd_struct_data_bca);
4080                 break;
4081         case DVD_STRUCT_MANUFACT:
4082                 length = sizeof(struct scsi_read_dvd_struct_data_manufacturer);
4083                 break;
4084         case DVD_STRUCT_CMI:
4085                 error = ENODEV;
4086                 goto bailout;
4087 #ifdef notyet
4088                 length = sizeof(struct scsi_read_dvd_struct_data_copy_manage);
4089                 address = dvdstruct->address;
4090 #endif
4091                 break; /* NOTREACHED */
4092         case DVD_STRUCT_PROTDISCID:
4093                 length = sizeof(struct scsi_read_dvd_struct_data_prot_discid);
4094                 break;
4095         case DVD_STRUCT_DISCKEYBLOCK:
4096                 length = sizeof(struct scsi_read_dvd_struct_data_disc_key_blk);
4097                 break;
4098         case DVD_STRUCT_DDS:
4099                 length = sizeof(struct scsi_read_dvd_struct_data_dds);
4100                 break;
4101         case DVD_STRUCT_MEDIUM_STAT:
4102                 length = sizeof(struct scsi_read_dvd_struct_data_medium_status);
4103                 break;
4104         case DVD_STRUCT_SPARE_AREA:
4105                 length = sizeof(struct scsi_read_dvd_struct_data_spare_area);
4106                 break;
4107         case DVD_STRUCT_RMD_LAST:
4108                 error = ENODEV;
4109                 goto bailout;
4110 #ifdef notyet
4111                 length = sizeof(struct scsi_read_dvd_struct_data_rmd_borderout);
4112                 address = dvdstruct->address;
4113 #endif
4114                 break; /* NOTREACHED */
4115         case DVD_STRUCT_RMD_RMA:
4116                 error = ENODEV;
4117                 goto bailout;
4118 #ifdef notyet
4119                 length = sizeof(struct scsi_read_dvd_struct_data_rmd);
4120                 address = dvdstruct->address;
4121 #endif
4122                 break; /* NOTREACHED */
4123         case DVD_STRUCT_PRERECORDED:
4124                 length = sizeof(struct scsi_read_dvd_struct_data_leadin);
4125                 break;
4126         case DVD_STRUCT_UNIQUEID:
4127                 length = sizeof(struct scsi_read_dvd_struct_data_disc_id);
4128                 break;
4129         case DVD_STRUCT_DCB:
4130                 error = ENODEV;
4131                 goto bailout;
4132 #ifdef notyet
4133                 length = sizeof(struct scsi_read_dvd_struct_data_dcb);
4134                 address = dvdstruct->address;
4135 #endif
4136                 break; /* NOTREACHED */
4137         case DVD_STRUCT_LIST:
4138                 /*
4139                  * This is the maximum allocation length for the READ DVD
4140                  * STRUCTURE command.  There's nothing in the MMC3 spec
4141                  * that indicates a limit in the amount of data that can
4142                  * be returned from this call, other than the limits
4143                  * imposed by the 2-byte length variables.
4144                  */
4145                 length = 65535;
4146                 break;
4147         default:
4148                 error = EINVAL;
4149                 goto bailout;
4150                 break; /* NOTREACHED */
4151         }
4152
4153         if (length != 0) {
4154                 databuf = kmalloc(length, M_DEVBUF, M_INTWAIT | M_ZERO);
4155         } else {
4156                 databuf = NULL;
4157         }
4158
4159         scsi_read_dvd_structure(&ccb->csio,
4160                                 /* retries */ 1,
4161                                 /* cbfcnp */ cddone,
4162                                 /* tag_action */ MSG_SIMPLE_Q_TAG,
4163                                 /* lba */ address,
4164                                 /* layer_number */ dvdstruct->layer_num,
4165                                 /* key_format */ dvdstruct->format,
4166                                 /* agid */ dvdstruct->agid,
4167                                 /* data_ptr */ databuf,
4168                                 /* dxfer_len */ length,
4169                                 /* sense_len */ SSD_FULL_SIZE,
4170                                 /* timeout */ 50000);
4171
4172         error = cdrunccb(ccb, cderror, /*cam_flags*/CAM_RETRY_SELTO,
4173                          /*sense_flags*/SF_RETRY_UA);
4174
4175         if (error != 0)
4176                 goto bailout;
4177
4178         switch(dvdstruct->format) {
4179         case DVD_STRUCT_PHYSICAL: {
4180                 struct scsi_read_dvd_struct_data_layer_desc *inlayer;
4181                 struct dvd_layer *outlayer;
4182                 struct scsi_read_dvd_struct_data_physical *phys_data;
4183
4184                 phys_data =
4185                         (struct scsi_read_dvd_struct_data_physical *)databuf;
4186                 inlayer = &phys_data->layer_desc;
4187                 outlayer = (struct dvd_layer *)&dvdstruct->data;
4188
4189                 dvdstruct->length = sizeof(*inlayer);
4190
4191                 outlayer->book_type = (inlayer->book_type_version &
4192                         RDSD_BOOK_TYPE_MASK) >> RDSD_BOOK_TYPE_SHIFT;
4193                 outlayer->book_version = (inlayer->book_type_version &
4194                         RDSD_BOOK_VERSION_MASK);
4195                 outlayer->disc_size = (inlayer->disc_size_max_rate &
4196                         RDSD_DISC_SIZE_MASK) >> RDSD_DISC_SIZE_SHIFT;
4197                 outlayer->max_rate = (inlayer->disc_size_max_rate &
4198                         RDSD_MAX_RATE_MASK);
4199                 outlayer->nlayers = (inlayer->layer_info &
4200                         RDSD_NUM_LAYERS_MASK) >> RDSD_NUM_LAYERS_SHIFT;
4201                 outlayer->track_path = (inlayer->layer_info &
4202                         RDSD_TRACK_PATH_MASK) >> RDSD_TRACK_PATH_SHIFT;
4203                 outlayer->layer_type = (inlayer->layer_info &
4204                         RDSD_LAYER_TYPE_MASK);
4205                 outlayer->linear_density = (inlayer->density &
4206                         RDSD_LIN_DENSITY_MASK) >> RDSD_LIN_DENSITY_SHIFT;
4207                 outlayer->track_density = (inlayer->density &
4208                         RDSD_TRACK_DENSITY_MASK);
4209                 outlayer->bca = (inlayer->bca & RDSD_BCA_MASK) >>
4210                         RDSD_BCA_SHIFT;
4211                 outlayer->start_sector = scsi_3btoul(inlayer->main_data_start);
4212                 outlayer->end_sector = scsi_3btoul(inlayer->main_data_end);
4213                 outlayer->end_sector_l0 =
4214                         scsi_3btoul(inlayer->end_sector_layer0);
4215                 break;
4216         }
4217         case DVD_STRUCT_COPYRIGHT: {
4218                 struct scsi_read_dvd_struct_data_copyright *copy_data;
4219
4220                 copy_data = (struct scsi_read_dvd_struct_data_copyright *)
4221                         databuf;
4222
4223                 dvdstruct->cpst = copy_data->cps_type;
4224                 dvdstruct->rmi = copy_data->region_info;
4225                 dvdstruct->length = 0;
4226
4227                 break;
4228         }
4229         default:
4230                 /*
4231                  * Tell the user what the overall length is, no matter
4232                  * what we can actually fit in the data buffer.
4233                  */
4234                 dvdstruct->length = length - ccb->csio.resid -
4235                         sizeof(struct scsi_read_dvd_struct_data_header);
4236
4237                 /*
4238                  * But only actually copy out the smaller of what we read
4239                  * in or what the structure can take.
4240                  */
4241                 bcopy(databuf + sizeof(struct scsi_read_dvd_struct_data_header),
4242                       dvdstruct->data,
4243                       min(sizeof(dvdstruct->data), dvdstruct->length));
4244                 break;
4245         }
4246 bailout:
4247
4248         if (databuf != NULL)
4249                 kfree(databuf, M_DEVBUF);
4250
4251         xpt_release_ccb(ccb);
4252
4253         return(error);
4254 }
4255
4256 void
4257 scsi_report_key(struct ccb_scsiio *csio, u_int32_t retries,
4258                 void (*cbfcnp)(struct cam_periph *, union ccb *),
4259                 u_int8_t tag_action, u_int32_t lba, u_int8_t agid,
4260                 u_int8_t key_format, u_int8_t *data_ptr, u_int32_t dxfer_len,
4261                 u_int8_t sense_len, u_int32_t timeout)
4262 {
4263         struct scsi_report_key *scsi_cmd;
4264
4265         scsi_cmd = (struct scsi_report_key *)&csio->cdb_io.cdb_bytes;
4266         bzero(scsi_cmd, sizeof(*scsi_cmd));
4267         scsi_cmd->opcode = REPORT_KEY;
4268         scsi_ulto4b(lba, scsi_cmd->lba);
4269         scsi_ulto2b(dxfer_len, scsi_cmd->alloc_len);
4270         scsi_cmd->agid_keyformat = (agid << RK_KF_AGID_SHIFT) |
4271                 (key_format & RK_KF_KEYFORMAT_MASK);
4272
4273         cam_fill_csio(csio,
4274                       retries,
4275                       cbfcnp,
4276                       /*flags*/ (dxfer_len == 0) ? CAM_DIR_NONE : CAM_DIR_IN,
4277                       tag_action,
4278                       /*data_ptr*/ data_ptr,
4279                       /*dxfer_len*/ dxfer_len,
4280                       sense_len,
4281                       sizeof(*scsi_cmd),
4282                       timeout);
4283 }
4284
4285 void
4286 scsi_send_key(struct ccb_scsiio *csio, u_int32_t retries,
4287               void (*cbfcnp)(struct cam_periph *, union ccb *),
4288               u_int8_t tag_action, u_int8_t agid, u_int8_t key_format,
4289               u_int8_t *data_ptr, u_int32_t dxfer_len, u_int8_t sense_len,
4290               u_int32_t timeout)
4291 {
4292         struct scsi_send_key *scsi_cmd;
4293
4294         scsi_cmd = (struct scsi_send_key *)&csio->cdb_io.cdb_bytes;
4295         bzero(scsi_cmd, sizeof(*scsi_cmd));
4296         scsi_cmd->opcode = SEND_KEY;
4297
4298         scsi_ulto2b(dxfer_len, scsi_cmd->param_len);
4299         scsi_cmd->agid_keyformat = (agid << RK_KF_AGID_SHIFT) |
4300                 (key_format & RK_KF_KEYFORMAT_MASK);
4301
4302         cam_fill_csio(csio,
4303                       retries,
4304                       cbfcnp,
4305                       /*flags*/ CAM_DIR_OUT,
4306                       tag_action,
4307                       /*data_ptr*/ data_ptr,
4308                       /*dxfer_len*/ dxfer_len,
4309                       sense_len,
4310                       sizeof(*scsi_cmd),
4311                       timeout);
4312 }
4313
4314
4315 void
4316 scsi_read_dvd_structure(struct ccb_scsiio *csio, u_int32_t retries,
4317                         void (*cbfcnp)(struct cam_periph *, union ccb *),
4318                         u_int8_t tag_action, u_int32_t address,
4319                         u_int8_t layer_number, u_int8_t format, u_int8_t agid,
4320                         u_int8_t *data_ptr, u_int32_t dxfer_len,
4321                         u_int8_t sense_len, u_int32_t timeout)
4322 {
4323         struct scsi_read_dvd_structure *scsi_cmd;
4324
4325         scsi_cmd = (struct scsi_read_dvd_structure *)&csio->cdb_io.cdb_bytes;
4326         bzero(scsi_cmd, sizeof(*scsi_cmd));
4327         scsi_cmd->opcode = READ_DVD_STRUCTURE;
4328
4329         scsi_ulto4b(address, scsi_cmd->address);
4330         scsi_cmd->layer_number = layer_number;
4331         scsi_cmd->format = format;
4332         scsi_ulto2b(dxfer_len, scsi_cmd->alloc_len);
4333         /* The AGID is the top two bits of this byte */
4334         scsi_cmd->agid = agid << 6;
4335
4336         cam_fill_csio(csio,
4337                       retries,
4338                       cbfcnp,
4339                       /*flags*/ CAM_DIR_IN,
4340                       tag_action,
4341                       /*data_ptr*/ data_ptr,
4342                       /*dxfer_len*/ dxfer_len,
4343                       sense_len,
4344                       sizeof(*scsi_cmd),
4345                       timeout);
4346 }