sys/dev/scd/scd.c

   1 /*-
   2  * Copyright (c) 1995 Mikael Hybsch
   3  * All rights reserved.
   4  *
   5  * Portions of this file are copied from mcd.c
   6  * which has the following copyrights:
   7  *
   8  *      Copyright 1993 by Holger Veit (data part)
   9  *      Copyright 1993 by Brian Moore (audio part)
  10  *      Changes Copyright 1993 by Gary Clark II
  11  *      Changes Copyright (C) 1994 by Andrew A. Chernov
  12  *
  13  *      Rewrote probe routine to work on newer Mitsumi drives.
  14  *      Additional changes (C) 1994 by Jordan K. Hubbard
  15  *
  16  *      All rights reserved.
  17  *
  18  * Redistribution and use in source and binary forms, with or without
  19  * modification, are permitted provided that the following conditions
  20  * are met:
  21  * 1. Redistributions of source code must retain the above copyright
  22  *    notice, this list of conditions and the following disclaimer
  23  *    in this position and unchanged.
  24  * 2. Redistributions in binary form must reproduce the above copyright
  25  *    notice, this list of conditions and the following disclaimer in the
  26  *    documentation and/or other materials provided with the distribution.
  27  * 3. The name of the author may not be used to endorse or promote products
  28  *    derived from this software without specific prior written permission
  29  *
  30  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  31  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  32  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  33  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  34  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  35  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  36  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  37  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  38  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  39  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  40  *
  41  */
  42
  43 #include <sys/cdefs.h>
  44 __FBSDID("$FreeBSD$");
  45
  46
  47 #undef  SCD_DEBUG
  48
  49 #include <sys/param.h>
  50 #include <sys/systm.h>
  51 #include <sys/kernel.h>
  52 #include <sys/conf.h>
  53 #include <sys/fcntl.h>
  54 #include <sys/bio.h>
  55 #include <sys/cdio.h>
  56 #include <sys/disk.h>
  57 #include <sys/bus.h>
  58
  59 #include <machine/stdarg.h>
  60
  61 #include <machine/bus.h>
  62 #include <machine/resource.h>
  63 #include <sys/rman.h>
  64
  65 #include <isa/isavar.h>
  66
  67 #include <dev/scd/scdreg.h>
  68 #include <dev/scd/scdvar.h>
  69
  70 /* flags */
  71 #define SCDOPEN         0x0001  /* device opened */
  72 #define SCDVALID        0x0002  /* parameters loaded */
  73 #define SCDINIT         0x0004  /* device is init'd */
  74 #define SCDPROBING      0x0020  /* probing */
  75 #define SCDTOC          0x0100  /* already read toc */
  76 #define SCDMBXBSY       0x0200  /* local mbx is busy */
  77 #define SCDSPINNING     0x0400  /* drive is spun up */
  78
  79 #define SCD_S_BEGIN     0
  80 #define SCD_S_BEGIN1    1
  81 #define SCD_S_WAITSTAT  2
  82 #define SCD_S_WAITFIFO  3
  83 #define SCD_S_WAITSPIN  4
  84 #define SCD_S_WAITREAD  5
  85 #define SCD_S_WAITPARAM 6
  86
  87 #define RDELAY_WAIT     300
  88 #define RDELAY_WAITREAD 300
  89
  90 #define SCDBLKSIZE      2048
  91
  92 #ifdef SCD_DEBUG
  93    static int scd_debuglevel = SCD_DEBUG;
  94 #  define XDEBUG(sc, level, fmt, args...) \
  95         do { \
  96                 if (scd_debuglevel >= level) \
  97                         device_printf(sc->dev, fmt, ## args); \
  98         } while (0)
  99 #else
 100 #  define XDEBUG(sc, level, fmt, args...)
 101 #endif
 102
 103 #define IS_ATTENTION(sc)        ((SCD_READ(sc, IREG_STATUS) & SBIT_ATTENTION) != 0)
 104 #define IS_BUSY(sc)             ((SCD_READ(sc, IREG_STATUS) & SBIT_BUSY) != 0)
 105 #define IS_DATA_RDY(sc)         ((SCD_READ(sc, IREG_STATUS) & SBIT_DATA_READY) != 0)
 106 #define STATUS_BIT(sc, bit)     ((SCD_READ(sc, IREG_STATUS) & (bit)) != 0)
 107 #define FSTATUS_BIT(sc, bit)    ((SCD_READ(sc, IREG_FSTATUS) & (bit)) != 0)
 108
 109 /* prototypes */
 110 static  void    hsg2msf(int hsg, bcd_t *msf);
 111 static  int     msf2hsg(bcd_t *msf);
 112
 113 static void process_attention(struct scd_softc *);
 114 static int waitfor_status_bits(struct scd_softc *, int bits_set, int bits_clear);
 115 static int send_cmd(struct scd_softc *, u_char cmd, u_int nargs, ...);
 116 static void init_drive(struct scd_softc *);
 117 static int spin_up(struct scd_softc *);
 118 static int read_toc(struct scd_softc *);
 119 static int get_result(struct scd_softc *, int result_len, u_char *result);
 120 static void print_error(struct scd_softc *, int errcode);
 121
 122 static void scd_start(struct scd_softc *);
 123 static void scd_timeout(void *);
 124 static void scd_doread(struct scd_softc *, int state, struct scd_mbx *mbxin);
 125
 126 static int scd_eject(struct scd_softc *);
 127 static int scd_stop(struct scd_softc *);
 128 static int scd_pause(struct scd_softc *);
 129 static int scd_resume(struct scd_softc *);
 130 static int scd_playtracks(struct scd_softc *, struct ioc_play_track *pt);
 131 static int scd_playmsf(struct scd_softc *, struct ioc_play_msf *msf);
 132 static int scd_play(struct scd_softc *, struct ioc_play_msf *msf);
 133 static int scd_subchan(struct scd_softc *, struct ioc_read_subchannel *sch, int nocopyout);
 134 static int read_subcode(struct scd_softc *, struct sony_subchannel_position_data *sch);
 135
 136 /* for xcdplayer */
 137 static int scd_toc_header(struct scd_softc *, struct ioc_toc_header *th);
 138 static int scd_toc_entrys(struct scd_softc *, struct ioc_read_toc_entry *te);
 139 static int scd_toc_entry(struct scd_softc *, struct ioc_read_toc_single_entry *te);
 140 #define SCD_LASTPLUS1 170 /* don't ask, xcdplayer passes this in */
 141
 142 static  d_open_t        scdopen;
 143 static  d_close_t       scdclose;
 144 static  d_ioctl_t       scdioctl;
 145 static  d_strategy_t    scdstrategy;
 146
 147
 148 static struct cdevsw scd_cdevsw = {
 149         .d_version =    D_VERSION,
 150         .d_open =       scdopen,
 151         .d_close =      scdclose,
 152         .d_read =       physread,
 153         .d_ioctl =      scdioctl,
 154         .d_strategy =   scdstrategy,
 155         .d_name =       "scd",
 156         .d_flags =      D_DISK,
 157 };
 158
 159 int
 160 scd_attach(struct scd_softc *sc)
 161 {
 162         int unit;
 163
 164         unit = device_get_unit(sc->dev);
 165
 166         SCD_LOCK(sc);
 167         init_drive(sc);
 168
 169         sc->data.flags = SCDINIT;
 170         sc->data.audio_status = CD_AS_AUDIO_INVALID;
 171         bioq_init(&sc->data.head);
 172         SCD_UNLOCK(sc);
 173
 174         sc->scd_dev_t = make_dev(&scd_cdevsw, 8 * unit,
 175                 UID_ROOT, GID_OPERATOR, 0640, "scd%d", unit);
 176         sc->scd_dev_t->si_drv1 = (void *)sc;
 177
 178         return (0);
 179 }
 180
 181 static  int
 182 scdopen(struct cdev *dev, int flags, int fmt, struct thread *td)
 183 {
 184         struct scd_softc *sc;
 185         int rc;
 186
 187         sc = (struct scd_softc *)dev->si_drv1;
 188
 189         /* mark all open part's invalid */
 190         SCD_LOCK(sc);
 191         if (sc->data.openflag) {
 192                 SCD_UNLOCK(sc);
 193                 return (ENXIO);
 194         }
 195
 196         XDEBUG(sc, 1, "DEBUG: status = 0x%x\n", SCD_READ(sc, IREG_STATUS));
 197
 198         if ((rc = spin_up(sc)) != 0) {
 199                 print_error(sc, rc);
 200                 SCD_UNLOCK(sc);
 201                 return (EIO);
 202         }
 203         if (!(sc->data.flags & SCDTOC)) {
 204                 int loop_count = 3;
 205
 206                 while (loop_count-- > 0 && (rc = read_toc(sc)) != 0) {
 207                         if (rc == ERR_NOT_SPINNING) {
 208                                 rc = spin_up(sc);
 209                                 if (rc) {
 210                                         print_error(sc, rc);
 211                                         SCD_UNLOCK(sc);
 212                                         return (EIO);
 213                                 }
 214                                 continue;
 215                         }
 216                         device_printf(sc->dev, "TOC read error 0x%x\n", rc);
 217                         SCD_UNLOCK(sc);
 218                         return (EIO);
 219                 }
 220         }
 221
 222         sc->data.openflag = 1;
 223         sc->data.flags |= SCDVALID;
 224         SCD_UNLOCK(sc);
 225
 226         return (0);
 227 }
 228
 229 static  int
 230 scdclose(struct cdev *dev, int flags, int fmt, struct thread *td)
 231 {
 232         struct scd_softc *sc;
 233
 234         sc = (struct scd_softc *)dev->si_drv1;
 235
 236         SCD_LOCK(sc);
 237         KASSERT(sc->data.openflag, ("device not open"));
 238
 239         if (sc->data.audio_status != CD_AS_PLAY_IN_PROGRESS) {
 240                 (void)send_cmd(sc, CMD_SPIN_DOWN, 0);
 241                 sc->data.flags &= ~SCDSPINNING;
 242         }
 243
 244         /* close channel */
 245         sc->data.openflag = 0;
 246         SCD_UNLOCK(sc);
 247
 248         return (0);
 249 }
 250
 251 static  void
 252 scdstrategy(struct bio *bp)
 253 {
 254         struct scd_softc *sc;
 255
 256         sc = (struct scd_softc *)bp->bio_dev->si_drv1;
 257
 258         /* if device invalidated (e.g. media change, door open), error */
 259         SCD_LOCK(sc);
 260         if (!(sc->data.flags & SCDVALID)) {
 261                 device_printf(sc->dev, "media changed\n");
 262                 bp->bio_error = EIO;
 263                 goto bad;
 264         }
 265
 266         /* read only */
 267         if (!(bp->bio_cmd == BIO_READ)) {
 268                 bp->bio_error = EROFS;
 269                 goto bad;
 270         }
 271
 272         /* no data to read */
 273         if (bp->bio_bcount == 0)
 274                 goto done;
 275
 276         if (!(sc->data.flags & SCDTOC)) {
 277                 bp->bio_error = EIO;
 278                 goto bad;
 279         }
 280
 281         bp->bio_resid = 0;
 282
 283         /* queue it */
 284         bioq_disksort(&sc->data.head, bp);
 285
 286         /* now check whether we can perform processing */
 287         scd_start(sc);
 288         SCD_UNLOCK(sc);
 289         return;
 290
 291 bad:
 292         bp->bio_flags |= BIO_ERROR;
 293 done:
 294         SCD_UNLOCK(sc);
 295         bp->bio_resid = bp->bio_bcount;
 296         biodone(bp);
 297         return;
 298 }
 299
 300 static void
 301 scd_start(struct scd_softc *sc)
 302 {
 303         struct bio *bp;
 304
 305         SCD_ASSERT_LOCKED(sc);
 306         if (sc->data.flags & SCDMBXBSY)
 307                 return;
 308
 309         bp = bioq_takefirst(&sc->data.head);
 310         if (bp != 0) {
 311                 /* block found to process, dequeue */
 312                 sc->data.flags |= SCDMBXBSY;
 313         } else {
 314                 /* nothing to do */
 315                 return;
 316         }
 317
 318         sc->data.mbx.retry = 3;
 319         sc->data.mbx.bp = bp;
 320
 321         scd_doread(sc, SCD_S_BEGIN, &(sc->data.mbx));
 322         return;
 323 }
 324
 325 static  int
 326 scdioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flags, struct thread *td)
 327 {
 328         struct scd_softc *sc;
 329         int error;
 330
 331         sc = (struct scd_softc *)dev->si_drv1;
 332
 333         XDEBUG(sc, 1, "ioctl: cmd=0x%lx\n", cmd);
 334
 335         SCD_LOCK(sc);
 336         if (!(sc->data.flags & SCDVALID)) {
 337                 SCD_UNLOCK(sc);
 338                 return (EIO);
 339         }
 340
 341         error = 0;
 342         switch (cmd) {
 343         case DIOCGMEDIASIZE:
 344                 *(off_t *)addr = (off_t)sc->data.disksize * sc->data.blksize;
 345                 break;
 346         case DIOCGSECTORSIZE:
 347                 *(u_int *)addr = sc->data.blksize;
 348                 break;
 349         case CDIOCPLAYTRACKS:
 350                 error = scd_playtracks(sc, (struct ioc_play_track *) addr);
 351                 break;
 352         case CDIOCPLAYBLOCKS:
 353                 error = EINVAL;
 354                 break;
 355         case CDIOCPLAYMSF:
 356                 error = scd_playmsf(sc, (struct ioc_play_msf *) addr);
 357                 break;
 358         case CDIOCREADSUBCHANNEL_SYSSPACE:
 359                 return scd_subchan(sc, (struct ioc_read_subchannel *) addr, 1);
 360         case CDIOCREADSUBCHANNEL:
 361                 return scd_subchan(sc, (struct ioc_read_subchannel *) addr, 0);
 362         case CDIOREADTOCHEADER:
 363                 error = scd_toc_header (sc, (struct ioc_toc_header *) addr);
 364                 break;
 365         case CDIOREADTOCENTRYS:
 366                 return scd_toc_entrys (sc, (struct ioc_read_toc_entry*) addr);
 367         case CDIOREADTOCENTRY:
 368                 error = scd_toc_entry (sc, (struct ioc_read_toc_single_entry*) addr);
 369                 break;
 370         case CDIOCSETPATCH:
 371         case CDIOCGETVOL:
 372         case CDIOCSETVOL:
 373         case CDIOCSETMONO:
 374         case CDIOCSETSTERIO:
 375         case CDIOCSETMUTE:
 376         case CDIOCSETLEFT:
 377         case CDIOCSETRIGHT:
 378                 error = EINVAL;
 379                 break;
 380         case CDIOCRESUME:
 381                 error = scd_resume(sc);
 382                 break;
 383         case CDIOCPAUSE:
 384                 error = scd_pause(sc);
 385                 break;
 386         case CDIOCSTART:
 387                 error = EINVAL;
 388                 break;
 389         case CDIOCSTOP:
 390                 error = scd_stop(sc);
 391                 break;
 392         case CDIOCEJECT:
 393                 error = scd_eject(sc);
 394                 break;
 395         case CDIOCALLOW:
 396                 break;
 397         case CDIOCSETDEBUG:
 398 #ifdef SCD_DEBUG
 399                 scd_debuglevel++;
 400 #endif
 401                 break;
 402         case CDIOCCLRDEBUG:
 403 #ifdef SCD_DEBUG
 404                 scd_debuglevel = 0;
 405
 406 #endif
 407                 break;
 408         default:
 409                 device_printf(sc->dev, "unsupported ioctl (cmd=0x%lx)\n", cmd);
 410                 error = ENOTTY;
 411                 break;
 412         }
 413         SCD_UNLOCK(sc);
 414         return (error);
 415 }
 416
 417 /***************************************************************
 418  * lower level of driver starts here
 419  **************************************************************/
 420
 421 static int
 422 scd_playtracks(struct scd_softc *sc, struct ioc_play_track *pt)
 423 {
 424         struct ioc_play_msf msf;
 425         int a = pt->start_track;
 426         int z = pt->end_track;
 427         int rc;
 428
 429         if (!(sc->data.flags & SCDTOC) && (rc = read_toc(sc)) != 0) {
 430                 if (rc == -ERR_NOT_SPINNING) {
 431                         if (spin_up(sc) != 0)
 432                                 return (EIO);
 433                         rc = read_toc(sc);
 434                 }
 435                 if (rc != 0) {
 436                         print_error(sc, rc);
 437                         return (EIO);
 438                 }
 439         }
 440
 441         XDEBUG(sc, 1, "playtracks from %d:%d to %d:%d\n",
 442                 a, pt->start_index, z, pt->end_index);
 443
 444         if (   a < sc->data.first_track
 445             || a > sc->data.last_track
 446             || a > z
 447             || z > sc->data.last_track)
 448                 return (EINVAL);
 449
 450         bcopy(sc->data.toc[a].start_msf, &msf.start_m, 3);
 451         hsg2msf(msf2hsg(sc->data.toc[z+1].start_msf)-1, &msf.end_m);
 452
 453         return scd_play(sc, &msf);
 454 }
 455
 456 /* The start/end msf is expected to be in bin format */
 457 static int
 458 scd_playmsf(struct scd_softc *sc, struct ioc_play_msf *msfin)
 459 {
 460         struct ioc_play_msf msf;
 461
 462         msf.start_m = bin2bcd(msfin->start_m);
 463         msf.start_s = bin2bcd(msfin->start_s);
 464         msf.start_f = bin2bcd(msfin->start_f);
 465         msf.end_m = bin2bcd(msfin->end_m);
 466         msf.end_s = bin2bcd(msfin->end_s);
 467         msf.end_f = bin2bcd(msfin->end_f);
 468
 469         return scd_play(sc, &msf);
 470 }
 471
 472 /* The start/end msf is expected to be in bcd format */
 473 static int
 474 scd_play(struct scd_softc *sc, struct ioc_play_msf *msf)
 475 {
 476         int i, rc;
 477
 478         XDEBUG(sc, 1, "playing: %02x:%02x:%02x -> %02x:%02x:%02x\n",
 479                 msf->start_m, msf->start_s, msf->start_f,
 480                 msf->end_m, msf->end_s, msf->end_f);
 481
 482         for (i = 0; i < 2; i++) {
 483                 rc = send_cmd(sc, CMD_PLAY_AUDIO, 7,
 484                         0x03,
 485                         msf->start_m, msf->start_s, msf->start_f,
 486                         msf->end_m, msf->end_s, msf->end_f);
 487                 if (rc == -ERR_NOT_SPINNING) {
 488                         sc->data.flags &= ~SCDSPINNING;
 489                         if (spin_up(sc) != 0)
 490                                 return (EIO);
 491                 } else if (rc < 0) {
 492                         print_error(sc, rc);
 493                         return (EIO);
 494                 } else {
 495                         break;
 496                 }
 497         }
 498         sc->data.audio_status = CD_AS_PLAY_IN_PROGRESS;
 499         bcopy((char *)msf, (char *)&sc->data.last_play, sizeof(struct ioc_play_msf));
 500         return (0);
 501 }
 502
 503 static int
 504 scd_stop(struct scd_softc *sc)
 505 {
 506
 507         (void)send_cmd(sc, CMD_STOP_AUDIO, 0);
 508         sc->data.audio_status = CD_AS_PLAY_COMPLETED;
 509         return (0);
 510 }
 511
 512 static int
 513 scd_pause(struct scd_softc *sc)
 514 {
 515         struct sony_subchannel_position_data subpos;
 516
 517         if (sc->data.audio_status != CD_AS_PLAY_IN_PROGRESS)
 518                 return (EINVAL);
 519
 520         if (read_subcode(sc, &subpos) != 0)
 521                 return (EIO);
 522
 523         if (send_cmd(sc, CMD_STOP_AUDIO, 0) != 0)
 524                 return (EIO);
 525
 526         sc->data.last_play.start_m = subpos.abs_msf[0];
 527         sc->data.last_play.start_s = subpos.abs_msf[1];
 528         sc->data.last_play.start_f = subpos.abs_msf[2];
 529         sc->data.audio_status = CD_AS_PLAY_PAUSED;
 530
 531         XDEBUG(sc, 1, "pause @ %02x:%02x:%02x\n",
 532                 sc->data.last_play.start_m,
 533                 sc->data.last_play.start_s,
 534                 sc->data.last_play.start_f);
 535
 536         return (0);
 537 }
 538
 539 static int
 540 scd_resume(struct scd_softc *sc)
 541 {
 542
 543         if (sc->data.audio_status != CD_AS_PLAY_PAUSED)
 544                 return (EINVAL);
 545         return scd_play(sc, &sc->data.last_play);
 546 }
 547
 548 static int
 549 scd_eject(struct scd_softc *sc)
 550 {
 551
 552         sc->data.audio_status = CD_AS_AUDIO_INVALID;
 553         sc->data.flags &= ~(SCDSPINNING|SCDTOC);
 554
 555         if (send_cmd(sc, CMD_STOP_AUDIO, 0) != 0 ||
 556             send_cmd(sc, CMD_SPIN_DOWN, 0) != 0 ||
 557             send_cmd(sc, CMD_EJECT, 0) != 0)
 558         {
 559                 return (EIO);
 560         }
 561         return (0);
 562 }
 563
 564 static int
 565 scd_subchan(struct scd_softc *sc, struct ioc_read_subchannel *sch, int nocopyout)
 566 {
 567         struct sony_subchannel_position_data q;
 568         struct cd_sub_channel_info data;
 569
 570         XDEBUG(sc, 1, "subchan af=%d, df=%d\n",
 571                 sch->address_format, sch->data_format);
 572
 573         if (sch->address_format != CD_MSF_FORMAT)
 574                 return (EINVAL);
 575
 576         if (sch->data_format != CD_CURRENT_POSITION)
 577                 return (EINVAL);
 578
 579         if (read_subcode(sc, &q) != 0)
 580                 return (EIO);
 581
 582         data.header.audio_status = sc->data.audio_status;
 583         data.what.position.data_format = CD_MSF_FORMAT;
 584         data.what.position.track_number = bcd2bin(q.track_number);
 585         data.what.position.reladdr.msf.unused = 0;
 586         data.what.position.reladdr.msf.minute = bcd2bin(q.rel_msf[0]);
 587         data.what.position.reladdr.msf.second = bcd2bin(q.rel_msf[1]);
 588         data.what.position.reladdr.msf.frame = bcd2bin(q.rel_msf[2]);
 589         data.what.position.absaddr.msf.unused = 0;
 590         data.what.position.absaddr.msf.minute = bcd2bin(q.abs_msf[0]);
 591         data.what.position.absaddr.msf.second = bcd2bin(q.abs_msf[1]);
 592         data.what.position.absaddr.msf.frame = bcd2bin(q.abs_msf[2]);
 593         SCD_UNLOCK(sc);
 594
 595         if (nocopyout == 0) {
 596                 if (copyout(&data, sch->data, min(sizeof(struct cd_sub_channel_info), sch->data_len))!=0)
 597                         return (EFAULT);
 598         } else {
 599                 bcopy(&data, sch->data, min(sizeof(struct cd_sub_channel_info), sch->data_len));
 600         }
 601         return (0);
 602 }
 603
 604 int
 605 scd_probe(struct scd_softc *sc)
 606 {
 607         struct sony_drive_configuration drive_config;
 608         int rc;
 609         static char namebuf[8+16+8+3];
 610         char *s = namebuf;
 611         int loop_count = 0;
 612
 613         sc->data.flags = SCDPROBING;
 614
 615         bzero(&drive_config, sizeof(drive_config));
 616
 617 again:
 618         /* Reset drive */
 619         SCD_WRITE(sc, OREG_CONTROL, CBIT_RESET_DRIVE);
 620
 621         /* Calm down */
 622         DELAY(300000);
 623
 624         /* Only the ATTENTION bit may be set */
 625         if ((SCD_READ(sc, IREG_STATUS) & ~1) != 0) {
 626                 XDEBUG(sc, 1, "too many bits set. probe failed.\n");
 627                 return (ENXIO);
 628         }
 629         rc = send_cmd(sc, CMD_GET_DRIVE_CONFIG, 0);
 630         if (rc != sizeof(drive_config)) {
 631                 /* Sometimes if the drive is playing audio I get */
 632                 /* the bad result 82. Fix by repeating the reset */
 633                 if (rc > 0 && loop_count++ == 0)
 634                         goto again;
 635                 return (ENXIO);
 636         }
 637         if (get_result(sc, rc, (u_char *)&drive_config) != 0)
 638                 return (ENXIO);
 639
 640         bcopy(drive_config.vendor, namebuf, 8);
 641         s = namebuf+8;
 642         while (*(s-1) == ' ')   /* Strip trailing spaces */
 643                 s--;
 644         *s++ = ' ';
 645         bcopy(drive_config.product, s, 16);
 646         s += 16;
 647         while (*(s-1) == ' ')
 648                 s--;
 649         *s++ = ' ';
 650         bcopy(drive_config.revision, s, 8);
 651         s += 8;
 652         while (*(s-1) == ' ')
 653                 s--;
 654         *s = 0;
 655
 656         sc->data.name = namebuf;
 657
 658         if (drive_config.config & 0x10)
 659                 sc->data.double_speed = 1;
 660         else
 661                 sc->data.double_speed = 0;
 662
 663         return (0);
 664 }
 665
 666 static int
 667 read_subcode(struct scd_softc *sc, struct sony_subchannel_position_data *scp)
 668 {
 669         int rc;
 670
 671         rc = send_cmd(sc, CMD_GET_SUBCHANNEL_DATA, 0);
 672         if (rc < 0 || rc < sizeof(*scp))
 673                 return (EIO);
 674         if (get_result(sc, rc, (u_char *)scp) != 0)
 675                 return (EIO);
 676         return (0);
 677 }
 678
 679 /* State machine copied from mcd.c */
 680
 681 /* This (and the code in mcd.c) will not work with more than one drive */
 682 /* because there is only one sc->ch_mbxsave below. Should fix that some day. */
 683 /* (sc->ch_mbxsave & state should probably be included in the scd_data struct and */
 684 /*  the unit number used as first argument to scd_doread().) /Micke */
 685
 686 /* state machine to process read requests
 687  * initialize with SCD_S_BEGIN: reset state machine
 688  * SCD_S_WAITSTAT:  wait for ready (!busy)
 689  * SCD_S_WAITSPIN:  wait for drive to spin up (if not spinning)
 690  * SCD_S_WAITFIFO:  wait for param fifo to get ready, them exec. command.
 691  * SCD_S_WAITREAD:  wait for data ready, read data
 692  * SCD_S_WAITPARAM: wait for command result params, read them, error if bad data read.
 693  */
 694
 695 static void
 696 scd_timeout(void *arg)
 697 {
 698         struct scd_softc *sc;
 699         sc = (struct scd_softc *)arg;
 700
 701         SCD_ASSERT_LOCKED(sc);
 702         scd_doread(sc, sc->ch_state, sc->ch_mbxsave);
 703 }
 704
 705 static void
 706 scd_doread(struct scd_softc *sc, int state, struct scd_mbx *mbxin)
 707 {
 708         struct scd_mbx *mbx = (state!=SCD_S_BEGIN) ? sc->ch_mbxsave : mbxin;
 709         struct  bio *bp = mbx->bp;
 710         int     i;
 711         int     blknum;
 712         caddr_t addr;
 713         static char sdata[3];   /* Must be preserved between calls to this function */
 714
 715         SCD_ASSERT_LOCKED(sc);
 716 loop:
 717         switch (state) {
 718         case SCD_S_BEGIN:
 719                 mbx = sc->ch_mbxsave = mbxin;
 720
 721         case SCD_S_BEGIN1:
 722                 /* get status */
 723                 mbx->count = RDELAY_WAIT;
 724
 725                 process_attention(sc);
 726                 goto trystat;
 727
 728         case SCD_S_WAITSTAT:
 729                 sc->ch_state = SCD_S_WAITSTAT;
 730                 callout_stop(&sc->timer);
 731                 if (mbx->count-- <= 0) {
 732                         device_printf(sc->dev, "timeout. drive busy.\n");
 733                         goto harderr;
 734                 }
 735
 736 trystat:
 737                 if (IS_BUSY(sc)) {
 738                         sc->ch_state = SCD_S_WAITSTAT;
 739                         callout_reset(&sc->timer, hz / 100, scd_timeout, sc); /* XXX */
 740                         return;
 741                 }
 742
 743                 process_attention(sc);
 744
 745                 /* reject, if audio active */
 746                 if (sc->data.audio_status & CD_AS_PLAY_IN_PROGRESS) {
 747                         device_printf(sc->dev, "audio is active\n");
 748                         goto harderr;
 749                 }
 750
 751                 mbx->sz = sc->data.blksize;
 752
 753                 /* for first block */
 754                 mbx->nblk = (bp->bio_bcount + (mbx->sz-1)) / mbx->sz;
 755                 mbx->skip = 0;
 756
 757 nextblock:
 758                 if (!(sc->data.flags & SCDVALID))
 759                         goto changed;
 760
 761                 blknum  = bp->bio_offset / mbx->sz + mbx->skip/mbx->sz;
 762
 763                 XDEBUG(sc, 2, "scd_doread: read blknum=%d\n", blknum);
 764
 765                 /* build parameter block */
 766                 hsg2msf(blknum, sdata);
 767
 768                 SCD_WRITE(sc, OREG_CONTROL, CBIT_RESULT_READY_CLEAR);
 769                 SCD_WRITE(sc, OREG_CONTROL, CBIT_RPARAM_CLEAR);
 770                 SCD_WRITE(sc, OREG_CONTROL, CBIT_DATA_READY_CLEAR);
 771
 772                 if (FSTATUS_BIT(sc, FBIT_WPARAM_READY))
 773                         goto writeparam;
 774
 775                 mbx->count = 100;
 776                 sc->ch_state = SCD_S_WAITFIFO;
 777                 callout_reset(&sc->timer, hz / 100, scd_timeout, sc); /* XXX */
 778                 return;
 779
 780         case SCD_S_WAITSPIN:
 781                 sc->ch_state = SCD_S_WAITSPIN;
 782                 callout_stop(&sc->timer);
 783                 if (mbx->count-- <= 0) {
 784                         device_printf(sc->dev, "timeout waiting for drive to spin up.\n");
 785                         goto harderr;
 786                 }
 787                 if (!STATUS_BIT(sc, SBIT_RESULT_READY)) {
 788                         sc->ch_state = SCD_S_WAITSPIN;
 789                         callout_reset(&sc->timer, hz / 100, scd_timeout, sc); /* XXX */
 790                         return;
 791                 }
 792                 SCD_WRITE(sc, OREG_CONTROL, CBIT_RESULT_READY_CLEAR);
 793                 switch ((i = SCD_READ(sc, IREG_RESULT)) & 0xf0) {
 794                 case 0x20:
 795                         i = SCD_READ(sc, IREG_RESULT);
 796                         print_error(sc, i);
 797                         goto harderr;
 798                 case 0x00:
 799                         (void)SCD_READ(sc, IREG_RESULT);
 800                         sc->data.flags |= SCDSPINNING;
 801                         break;
 802                 }
 803                 XDEBUG(sc, 1, "DEBUG: spin up complete\n");
 804
 805                 state = SCD_S_BEGIN1;
 806                 goto loop;
 807
 808         case SCD_S_WAITFIFO:
 809                 sc->ch_state = SCD_S_WAITFIFO;
 810                 callout_stop(&sc->timer);
 811                 if (mbx->count-- <= 0) {
 812                         device_printf(sc->dev, "timeout. write param not ready.\n");
 813                         goto harderr;
 814                 }
 815                 if (!FSTATUS_BIT(sc, FBIT_WPARAM_READY)) {
 816                         sc->ch_state = SCD_S_WAITFIFO;
 817                         callout_reset(&sc->timer, hz / 100, scd_timeout, sc); /* XXX */
 818                         return;
 819                 }
 820                 XDEBUG(sc, 1, "mbx->count (writeparamwait) = %d(%d)\n", mbx->count, 100);
 821
 822 writeparam:
 823                 /* The reason this test isn't done 'till now is to make sure */
 824                 /* that it is ok to send the SPIN_UP cmd below. */
 825                 if (!(sc->data.flags & SCDSPINNING)) {
 826                         XDEBUG(sc, 1, "spinning up drive ...\n");
 827                         SCD_WRITE(sc, OREG_COMMAND, CMD_SPIN_UP);
 828                         mbx->count = 300;
 829                         sc->ch_state = SCD_S_WAITSPIN;
 830                         callout_reset(&sc->timer, hz / 100, scd_timeout, sc); /* XXX */
 831                         return;
 832                 }
 833
 834                 /* send the read command */
 835                 SCD_WRITE(sc, OREG_WPARAMS, sdata[0]);
 836                 SCD_WRITE(sc, OREG_WPARAMS, sdata[1]);
 837                 SCD_WRITE(sc, OREG_WPARAMS, sdata[2]);
 838                 SCD_WRITE(sc, OREG_WPARAMS, 0);
 839                 SCD_WRITE(sc, OREG_WPARAMS, 0);
 840                 SCD_WRITE(sc, OREG_WPARAMS, 1);
 841                 SCD_WRITE(sc, OREG_COMMAND, CMD_READ);
 842
 843                 mbx->count = RDELAY_WAITREAD;
 844                 for (i = 0; i < 50; i++) {
 845                         if (STATUS_BIT(sc, SBIT_DATA_READY))
 846                                 goto got_data;
 847                         DELAY(100);
 848                 }
 849
 850                 sc->ch_state = SCD_S_WAITREAD;
 851                 callout_reset(&sc->timer, hz / 100, scd_timeout, sc); /* XXX */
 852                 return;
 853
 854         case SCD_S_WAITREAD:
 855                 sc->ch_state = SCD_S_WAITREAD;
 856                 callout_stop(&sc->timer);
 857                 if (mbx->count-- <= 0) {
 858                         if (STATUS_BIT(sc, SBIT_RESULT_READY))
 859                                 goto got_param;
 860                         device_printf(sc->dev, "timeout while reading data\n");
 861                         goto readerr;
 862                 }
 863                 if (!STATUS_BIT(sc, SBIT_DATA_READY)) {
 864                         process_attention(sc);
 865                         if (!(sc->data.flags & SCDVALID))
 866                                 goto changed;
 867                         sc->ch_state = SCD_S_WAITREAD;
 868                         callout_reset(&sc->timer, hz / 100, scd_timeout, sc); /* XXX */
 869                         return;
 870                 }
 871                 XDEBUG(sc, 2, "mbx->count (after RDY_BIT) = %d(%d)\n", mbx->count, RDELAY_WAITREAD);
 872
 873 got_data:
 874                 /* data is ready */
 875                 addr = bp->bio_data + mbx->skip;
 876                 SCD_WRITE(sc, OREG_CONTROL, CBIT_DATA_READY_CLEAR);
 877                 SCD_READ_MULTI(sc, IREG_DATA, addr, mbx->sz);
 878
 879                 mbx->count = 100;
 880                 for (i = 0; i < 20; i++) {
 881                         if (STATUS_BIT(sc, SBIT_RESULT_READY))
 882                                 goto waitfor_param;
 883                         DELAY(100);
 884                 }
 885                 goto waitfor_param;
 886
 887         case SCD_S_WAITPARAM:
 888                 sc->ch_state = SCD_S_WAITPARAM;
 889                 callout_stop(&sc->timer);
 890                 if (mbx->count-- <= 0) {
 891                         device_printf(sc->dev, "timeout waiting for params\n");
 892                         goto readerr;
 893                 }
 894
 895 waitfor_param:
 896                 if (!STATUS_BIT(sc, SBIT_RESULT_READY)) {
 897                         sc->ch_state = SCD_S_WAITPARAM;
 898                         callout_reset(&sc->timer, hz / 100, scd_timeout, sc); /* XXX */
 899                         return;
 900                 }
 901 #ifdef SCD_DEBUG
 902                 if (mbx->count < 100 && scd_debuglevel > 0)
 903                         device_printf(sc->dev, "mbx->count (paramwait) = %d(%d)\n", mbx->count, 100);
 904 #endif
 905
 906 got_param:
 907                 SCD_WRITE(sc, OREG_CONTROL, CBIT_RESULT_READY_CLEAR);
 908                 switch ((i = SCD_READ(sc, IREG_RESULT)) & 0xf0) {
 909                 case 0x50:
 910                         switch (i) {
 911                         case ERR_FATAL_READ_ERROR1:
 912                         case ERR_FATAL_READ_ERROR2:
 913                                 device_printf(sc->dev, "unrecoverable read error 0x%x\n", i);
 914                                 goto harderr;
 915                         }
 916                         break;
 917                 case 0x20:
 918                         i = SCD_READ(sc, IREG_RESULT);
 919                         switch (i) {
 920                         case ERR_NOT_SPINNING:
 921                                 XDEBUG(sc, 1, "read error: drive not spinning\n");
 922                                 if (mbx->retry-- > 0) {
 923                                         state = SCD_S_BEGIN1;
 924                                         sc->data.flags &= ~SCDSPINNING;
 925                                         goto loop;
 926                                 }
 927                                 goto harderr;
 928                         default:
 929                                 print_error(sc, i);
 930                                 goto readerr;
 931                         }
 932                 case 0x00:
 933                         i = SCD_READ(sc, IREG_RESULT);
 934                         break;
 935                 }
 936
 937                 if (--mbx->nblk > 0) {
 938                         mbx->skip += mbx->sz;
 939                         goto nextblock;
 940                 }
 941
 942                 /* return buffer */
 943                 bp->bio_resid = 0;
 944                 biodone(bp);
 945
 946                 sc->data.flags &= ~SCDMBXBSY;
 947                 scd_start(sc);
 948                 return;
 949         }
 950
 951 readerr:
 952         if (mbx->retry-- > 0) {
 953                 device_printf(sc->dev, "retrying ...\n");
 954                 state = SCD_S_BEGIN1;
 955                 goto loop;
 956         }
 957 harderr:
 958         /* invalidate the buffer */
 959         bp->bio_error = EIO;
 960         bp->bio_flags |= BIO_ERROR;
 961         bp->bio_resid = bp->bio_bcount;
 962         biodone(bp);
 963
 964         sc->data.flags &= ~SCDMBXBSY;
 965         scd_start(sc);
 966         return;
 967
 968 changed:
 969         device_printf(sc->dev, "media changed\n");
 970         goto harderr;
 971 }
 972
 973 static void
 974 hsg2msf(int hsg, bcd_t *msf)
 975 {
 976
 977         hsg += 150;
 978         M_msf(msf) = bin2bcd(hsg / 4500);
 979         hsg %= 4500;
 980         S_msf(msf) = bin2bcd(hsg / 75);
 981         F_msf(msf) = bin2bcd(hsg % 75);
 982 }
 983
 984 static int
 985 msf2hsg(bcd_t *msf)
 986 {
 987
 988         return (bcd2bin(M_msf(msf)) * 60 +
 989                 bcd2bin(S_msf(msf))) * 75 +
 990                 bcd2bin(F_msf(msf)) - 150;
 991 }
 992
 993 static void
 994 process_attention(struct scd_softc *sc)
 995 {
 996         unsigned char code;
 997         int count = 0;
 998
 999         while (IS_ATTENTION(sc) && count++ < 30) {
1000                 SCD_WRITE(sc, OREG_CONTROL, CBIT_ATTENTION_CLEAR);
1001                 code = SCD_READ(sc, IREG_RESULT);
1002
1003 #ifdef SCD_DEBUG
1004                 if (scd_debuglevel > 0) {
1005                         if (count == 1)
1006                                 device_printf(sc->dev, "DEBUG: ATTENTIONS = 0x%x", code);
1007                         else
1008                                 printf(",0x%x", code);
1009                 }
1010 #endif
1011
1012                 switch (code) {
1013                 case ATTEN_SPIN_DOWN:
1014                         sc->data.flags &= ~SCDSPINNING;
1015                         break;
1016
1017                 case ATTEN_SPIN_UP_DONE:
1018                         sc->data.flags |= SCDSPINNING;
1019                         break;
1020
1021                 case ATTEN_AUDIO_DONE:
1022                         sc->data.audio_status = CD_AS_PLAY_COMPLETED;
1023                         break;
1024
1025                 case ATTEN_DRIVE_LOADED:
1026                         sc->data.flags &= ~(SCDTOC|SCDSPINNING|SCDVALID);
1027                         sc->data.audio_status = CD_AS_AUDIO_INVALID;
1028                         break;
1029
1030                 case ATTEN_EJECT_PUSHED:
1031                         sc->data.flags &= ~SCDVALID;
1032                         break;
1033                 }
1034                 DELAY(100);
1035         }
1036 #ifdef SCD_DEBUG
1037         if (scd_debuglevel > 0 && count > 0)
1038                 printf("\n");
1039 #endif
1040 }
1041
1042 /* Returns 0 OR sony error code */
1043 static int
1044 spin_up(struct scd_softc *sc)
1045 {
1046         unsigned char res_reg[12];
1047         unsigned int res_size;
1048         int rc;
1049         int loop_count = 0;
1050
1051 again:
1052         rc = send_cmd(sc, CMD_SPIN_UP, 0, 0, res_reg, &res_size);
1053         if (rc != 0) {
1054                 XDEBUG(sc, 2, "CMD_SPIN_UP error 0x%x\n", rc);
1055                 return (rc);
1056         }
1057
1058         if (!(sc->data.flags & SCDTOC)) {
1059                 rc = send_cmd(sc, CMD_READ_TOC, 0);
1060                 if (rc == ERR_NOT_SPINNING) {
1061                         if (loop_count++ < 3)
1062                                 goto again;
1063                         return (rc);
1064                 }
1065                 if (rc != 0)
1066                         return (rc);
1067         }
1068
1069         sc->data.flags |= SCDSPINNING;
1070
1071         return (0);
1072 }
1073
1074 static struct sony_tracklist *
1075 get_tl(struct sony_toc *toc, int size)
1076 {
1077         struct sony_tracklist *tl = &toc->tracks[0];
1078
1079         if (tl->track != 0xb0)
1080                 return (tl);
1081         if (tl->track != 0xb1)
1082                 return (tl);
1083         tl = (struct sony_tracklist *)((char *)tl + 9);
1084         if (tl->track != 0xb2)
1085                 return (tl);
1086         tl = (struct sony_tracklist *)((char *)tl + 9);
1087         if (tl->track != 0xb3)
1088                 return (tl);
1089         tl = (struct sony_tracklist *)((char *)tl + 9);
1090         if (tl->track != 0xb4)
1091                 return (tl);
1092         tl = (struct sony_tracklist *)((char *)tl + 9);
1093         if (tl->track != 0xc0)
1094                 return (tl);
1095         tl = (struct sony_tracklist *)((char *)tl + 9);
1096         return (tl);
1097 }
1098
1099 static int
1100 read_toc(struct scd_softc *sc)
1101 {
1102         struct sony_toc toc;
1103         struct sony_tracklist *tl;
1104         int rc, i, j;
1105         u_long first, last;
1106
1107         rc = send_cmd(sc, CMD_GET_TOC, 1, 1);
1108         if (rc < 0)
1109                 return (rc);
1110         if (rc > sizeof(toc)) {
1111                 device_printf(sc->dev, "program error: toc too large (%d)\n", rc);
1112                 return (EIO);
1113         }
1114         if (get_result(sc, rc, (u_char *)&toc) != 0)
1115                 return (EIO);
1116
1117         XDEBUG(sc, 1, "toc read. len = %d, sizeof(toc) = %d\n", rc, sizeof(toc));
1118
1119         tl = get_tl(&toc, rc);
1120         first = msf2hsg(tl->start_msf);
1121         last = msf2hsg(toc.lead_out_start_msf);
1122         sc->data.blksize = SCDBLKSIZE;
1123         sc->data.disksize = last*sc->data.blksize/DEV_BSIZE;
1124
1125         XDEBUG(sc, 1, "firstsector = %ld, lastsector = %ld", first, last);
1126
1127         sc->data.first_track = bcd2bin(toc.first_track);
1128         sc->data.last_track = bcd2bin(toc.last_track);
1129         if (sc->data.last_track > (MAX_TRACKS-2))
1130                 sc->data.last_track = MAX_TRACKS-2;
1131         for (j = 0, i = sc->data.first_track; i <= sc->data.last_track; i++, j++) {
1132                 sc->data.toc[i].adr = tl[j].adr;
1133                 sc->data.toc[i].ctl = tl[j].ctl; /* for xcdplayer */
1134                 bcopy(tl[j].start_msf, sc->data.toc[i].start_msf, 3);
1135 #ifdef SCD_DEBUG
1136                 if (scd_debuglevel > 0) {
1137                         if ((j % 3) == 0) {
1138                                 printf("\n");
1139                                 device_printf(sc->dev, "tracks ");
1140                         }
1141                         printf("[%03d: %2d %2d %2d]  ", i,
1142                                 bcd2bin(sc->data.toc[i].start_msf[0]),
1143                                 bcd2bin(sc->data.toc[i].start_msf[1]),
1144                                 bcd2bin(sc->data.toc[i].start_msf[2]));
1145                 }
1146 #endif
1147         }
1148         bcopy(toc.lead_out_start_msf, sc->data.toc[sc->data.last_track+1].start_msf, 3);
1149 #ifdef SCD_DEBUG
1150         if (scd_debuglevel > 0) {
1151                 i = sc->data.last_track+1;
1152                 printf("[END: %2d %2d %2d]\n",
1153                         bcd2bin(sc->data.toc[i].start_msf[0]),
1154                         bcd2bin(sc->data.toc[i].start_msf[1]),
1155                         bcd2bin(sc->data.toc[i].start_msf[2]));
1156         }
1157 #endif
1158
1159         sc->data.flags |= SCDTOC;
1160
1161         return (0);
1162 }
1163
1164 static void
1165 init_drive(struct scd_softc *sc)
1166 {
1167         int rc;
1168
1169         rc = send_cmd(sc, CMD_SET_DRIVE_PARAM, 2,
1170                 0x05, 0x03 | ((sc->data.double_speed) ? 0x04: 0));
1171         if (rc != 0)
1172                 device_printf(sc->dev, "Unable to set parameters. Errcode = 0x%x\n", rc);
1173 }
1174
1175 /* Returns 0 or errno */
1176 static int
1177 get_result(struct scd_softc *sc, int result_len, u_char *result)
1178 {
1179         int loop_index = 2; /* send_cmd() reads two bytes ... */
1180
1181         XDEBUG(sc, 1, "DEBUG: get_result: bytes=%d\n", result_len);
1182
1183         while (result_len-- > 0) {
1184                 if (loop_index++ >= 10) {
1185                         loop_index = 1;
1186                         if (waitfor_status_bits(sc, SBIT_RESULT_READY, 0))
1187                                 return (EIO);
1188                         SCD_WRITE(sc, OREG_CONTROL, CBIT_RESULT_READY_CLEAR);
1189                 }
1190                 if (result)
1191                         *result++ = SCD_READ(sc, IREG_RESULT);
1192                 else
1193                         (void)SCD_READ(sc, IREG_RESULT);
1194         }
1195         return (0);
1196 }
1197
1198 /* Returns -0x100 for timeout, -(drive error code) OR number of result bytes */
1199 static int
1200 send_cmd(struct scd_softc *sc, u_char cmd, u_int nargs, ...)
1201 {
1202         va_list ap;
1203         u_char c;
1204         int rc;
1205         int i;
1206
1207         if (waitfor_status_bits(sc, 0, SBIT_BUSY)) {
1208                 device_printf(sc->dev, "drive busy\n");
1209                 return (-0x100);
1210         }
1211
1212         XDEBUG(sc, 1, "DEBUG: send_cmd: cmd=0x%x nargs=%d", cmd, nargs);
1213
1214         SCD_WRITE(sc, OREG_CONTROL, CBIT_RESULT_READY_CLEAR);
1215         SCD_WRITE(sc, OREG_CONTROL, CBIT_RPARAM_CLEAR);
1216
1217         for (i = 0; i < 100; i++)
1218                 if (FSTATUS_BIT(sc, FBIT_WPARAM_READY))
1219                         break;
1220         if (!FSTATUS_BIT(sc, FBIT_WPARAM_READY)) {
1221                 XDEBUG(sc, 1, "\nwparam timeout\n");
1222                 return (-EIO);
1223         }
1224
1225         va_start(ap, nargs);
1226         for (i = 0; i < nargs; i++) {
1227                 c = (u_char)va_arg(ap, int);
1228                 SCD_WRITE(sc, OREG_WPARAMS, c);
1229                 XDEBUG(sc, 1, ",{0x%x}", c);
1230         }
1231         va_end(ap);
1232         XDEBUG(sc, 1, "\n");
1233
1234         SCD_WRITE(sc, OREG_COMMAND, cmd);
1235
1236         rc = waitfor_status_bits(sc, SBIT_RESULT_READY, SBIT_BUSY);
1237         if (rc)
1238                 return (-0x100);
1239
1240         SCD_WRITE(sc, OREG_CONTROL, CBIT_RESULT_READY_CLEAR);
1241         switch ((rc = SCD_READ(sc, IREG_RESULT)) & 0xf0) {
1242         case 0x20:
1243                 rc = SCD_READ(sc, IREG_RESULT);
1244                 /* FALLTHROUGH */
1245         case 0x50:
1246                 XDEBUG(sc, 1, "DEBUG: send_cmd: drive_error=0x%x\n", rc);
1247                 return (-rc);
1248         case 0x00:
1249         default:
1250                 rc = SCD_READ(sc, IREG_RESULT);
1251                 XDEBUG(sc, 1, "DEBUG: send_cmd: result_len=%d\n", rc);
1252                 return (rc);
1253         }
1254 }
1255
1256 static void
1257 print_error(struct scd_softc *sc, int errcode)
1258 {
1259
1260         switch (errcode) {
1261         case -ERR_CD_NOT_LOADED:
1262                 device_printf(sc->dev, "door is open\n");
1263                 break;
1264         case -ERR_NO_CD_INSIDE:
1265                 device_printf(sc->dev, "no cd inside\n");
1266                 break;
1267         default:
1268                 if (errcode == -0x100 || errcode > 0)
1269                         device_printf(sc->dev, "device timeout\n");
1270                 else
1271                         device_printf(sc->dev, "unexpected error 0x%x\n", -errcode);
1272                 break;
1273         }
1274 }
1275
1276 /* Returns 0 or errno value */
1277 static int
1278 waitfor_status_bits(struct scd_softc *sc, int bits_set, int bits_clear)
1279 {
1280         u_int flags = sc->data.flags;
1281         u_int max_loop;
1282         u_char c = 0;
1283
1284         if (flags & SCDPROBING) {
1285                 max_loop = 0;
1286                 while (max_loop++ < 1000) {
1287                         c = SCD_READ(sc, IREG_STATUS);
1288                         if (c == 0xff)
1289                                 return (EIO);
1290                         if (c & SBIT_ATTENTION) {
1291                                 process_attention(sc);
1292                                 continue;
1293                         }
1294                         if ((c & bits_set) == bits_set &&
1295                             (c & bits_clear) == 0)
1296                         {
1297                                 break;
1298                         }
1299                         DELAY(10000);
1300                 }
1301         } else {
1302                 max_loop = 100;
1303                 while (max_loop-- > 0) {
1304                         c = SCD_READ(sc, IREG_STATUS);
1305                         if (c & SBIT_ATTENTION) {
1306                                 process_attention(sc);
1307                                 continue;
1308                         }
1309                         if ((c & bits_set) == bits_set &&
1310                             (c & bits_clear) == 0)
1311                         {
1312                                 break;
1313                         }
1314                         SCD_UNLOCK(sc);
1315                         pause("waitfor", hz/10);
1316                         SCD_LOCK(sc);
1317                 }
1318         }
1319         if ((c & bits_set) == bits_set &&
1320             (c & bits_clear) == 0)
1321         {
1322                 return (0);
1323         }
1324 #ifdef SCD_DEBUG
1325         if (scd_debuglevel > 0)
1326                 device_printf(sc->dev, "DEBUG: waitfor: TIMEOUT (0x%x,(0x%x,0x%x))\n", c, bits_set, bits_clear);
1327         else
1328 #endif
1329                 device_printf(sc->dev, "timeout.\n");
1330         return (EIO);
1331 }
1332
1333 /* these two routines for xcdplayer - "borrowed" from mcd.c */
1334 static int
1335 scd_toc_header (struct scd_softc *sc, struct ioc_toc_header* th)
1336 {
1337         int rc;
1338
1339         if (!(sc->data.flags & SCDTOC) && (rc = read_toc(sc)) != 0) {
1340                 print_error(sc, rc);
1341                 return (EIO);
1342         }
1343
1344         th->starting_track = sc->data.first_track;
1345         th->ending_track = sc->data.last_track;
1346         th->len = 0; /* not used */
1347
1348         return (0);
1349 }
1350
1351 static int
1352 scd_toc_entrys (struct scd_softc *sc, struct ioc_read_toc_entry *te)
1353 {
1354         struct cd_toc_entry toc_entry;
1355         int rc, i, len = te->data_len;
1356
1357         if (!(sc->data.flags & SCDTOC) && (rc = read_toc(sc)) != 0) {
1358                 print_error(sc, rc);
1359                 return (EIO);
1360         }
1361
1362         /* find the toc to copy*/
1363         i = te->starting_track;
1364         if (i == SCD_LASTPLUS1)
1365                 i = sc->data.last_track + 1;
1366
1367         /* verify starting track */
1368         if (i < sc->data.first_track || i > sc->data.last_track+1)
1369                 return (EINVAL);
1370
1371         /* valid length ? */
1372         if (len < sizeof(struct cd_toc_entry)
1373             || (len % sizeof(struct cd_toc_entry)) != 0)
1374                 return (EINVAL);
1375
1376         /* copy the toc data */
1377         toc_entry.control = sc->data.toc[i].ctl;
1378         toc_entry.addr_type = te->address_format;
1379         toc_entry.track = i;
1380         if (te->address_format == CD_MSF_FORMAT) {
1381                 toc_entry.addr.msf.unused = 0;
1382                 toc_entry.addr.msf.minute = bcd2bin(sc->data.toc[i].start_msf[0]);
1383                 toc_entry.addr.msf.second = bcd2bin(sc->data.toc[i].start_msf[1]);
1384                 toc_entry.addr.msf.frame = bcd2bin(sc->data.toc[i].start_msf[2]);
1385         }
1386         SCD_UNLOCK(sc);
1387
1388         /* copy the data back */
1389         if (copyout(&toc_entry, te->data, sizeof(struct cd_toc_entry)) != 0)
1390                 return (EFAULT);
1391
1392         return (0);
1393 }
1394
1395
1396 static int
1397 scd_toc_entry (struct scd_softc *sc, struct ioc_read_toc_single_entry *te)
1398 {
1399         struct cd_toc_entry toc_entry;
1400         int rc, i;
1401
1402         if (!(sc->data.flags & SCDTOC) && (rc = read_toc(sc)) != 0) {
1403                 print_error(sc, rc);
1404                 return (EIO);
1405         }
1406
1407         /* find the toc to copy*/
1408         i = te->track;
1409         if (i == SCD_LASTPLUS1)
1410                 i = sc->data.last_track + 1;
1411
1412         /* verify starting track */
1413         if (i < sc->data.first_track || i > sc->data.last_track+1)
1414                 return (EINVAL);
1415
1416         /* copy the toc data */
1417         toc_entry.control = sc->data.toc[i].ctl;
1418         toc_entry.addr_type = te->address_format;
1419         toc_entry.track = i;
1420         if (te->address_format == CD_MSF_FORMAT) {
1421                 toc_entry.addr.msf.unused = 0;
1422                 toc_entry.addr.msf.minute = bcd2bin(sc->data.toc[i].start_msf[0]);
1423                 toc_entry.addr.msf.second = bcd2bin(sc->data.toc[i].start_msf[1]);
1424                 toc_entry.addr.msf.frame = bcd2bin(sc->data.toc[i].start_msf[2]);
1425         }
1426
1427         /* copy the data back */
1428         bcopy(&toc_entry, &te->entry, sizeof(struct cd_toc_entry));
1429
1430         return (0);
1431 }