Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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sys/i386/isa/scd.c
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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 withough 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 44 /* $FreeBSD$ */ 45 46 /* Please send any comments to micke@dynas.se */ 47 48 #define SCD_DEBUG 0 49 50 #include "scd.h" 51 #include <sys/param.h> 52 #include <sys/systm.h> 53 #include <sys/conf.h> 54 #include <sys/buf.h> 55 #include <sys/cdio.h> 56 #include <sys/disklabel.h> 57 #include <sys/kernel.h> 58 59 #include <machine/clock.h> 60 #include <machine/stdarg.h> 61 62 #include <i386/isa/isa_device.h> 63 #include <i386/isa/scdreg.h> 64 65 66 #define scd_part(dev) ((minor(dev)) & 7) 67 #define scd_unit(dev) (((minor(dev)) & 0x38) >> 3) 68 #define scd_phys(dev) (((minor(dev)) & 0x40) >> 6) 69 #define RAW_PART 2 70 71 /* flags */ 72 #define SCDOPEN 0x0001 /* device opened */ 73 #define SCDVALID 0x0002 /* parameters loaded */ 74 #define SCDINIT 0x0004 /* device is init'd */ 75 #define SCDPROBING 0x0020 /* probing */ 76 #define SCDTOC 0x0100 /* already read toc */ 77 #define SCDMBXBSY 0x0200 /* local mbx is busy */ 78 #define SCDSPINNING 0x0400 /* drive is spun up */ 79 80 #define SCD_S_BEGIN 0 81 #define SCD_S_BEGIN1 1 82 #define SCD_S_WAITSTAT 2 83 #define SCD_S_WAITFIFO 3 84 #define SCD_S_WAITSPIN 4 85 #define SCD_S_WAITREAD 5 86 #define SCD_S_WAITPARAM 6 87 88 #define RDELAY_WAIT 300 89 #define RDELAY_WAITREAD 300 90 91 #define SCDBLKSIZE 2048 92 93 #ifdef SCD_DEBUG 94 static int scd_debuglevel = SCD_DEBUG; 95 # define XDEBUG(level, data) {if (scd_debuglevel >= level) printf data;} 96 #else 97 # define XDEBUG(level, data) 98 #endif 99 100 struct scd_mbx { 101 short unit; 102 short port; 103 short retry; 104 short nblk; 105 int sz; 106 u_long skip; 107 struct buf *bp; 108 int p_offset; 109 short count; 110 }; 111 112 static struct scd_data { 113 int iobase; 114 char double_speed; 115 char *name; 116 short flags; 117 int blksize; 118 u_long disksize; 119 struct disklabel dlabel; 120 int openflag; 121 struct { 122 unsigned int adr :4; 123 unsigned int ctl :4; /* xcdplayer needs this */ 124 unsigned char start_msf[3]; 125 } toc[MAX_TRACKS]; 126 short first_track; 127 short last_track; 128 struct ioc_play_msf last_play; 129 130 short audio_status; 131 struct buf_queue_head head; /* head of buf queue */ 132 struct scd_mbx mbx; 133 } scd_data[NSCD]; 134 135 /* prototypes */ 136 static void hsg2msf(int hsg, bcd_t *msf); 137 static int msf2hsg(bcd_t *msf); 138 139 static void process_attention(unsigned unit); 140 static __inline void write_control(unsigned port, unsigned data); 141 static int waitfor_status_bits(int unit, int bits_set, int bits_clear); 142 static int send_cmd(u_int unit, u_char cmd, u_int nargs, ...); 143 static void init_drive(unsigned unit); 144 static int spin_up(unsigned unit); 145 static int read_toc(unsigned unit); 146 static int get_result(u_int unit, int result_len, u_char *result); 147 static void print_error(int unit, int errcode); 148 149 static void scd_start(int unit); 150 static timeout_t scd_timeout; 151 static void scd_doread(int state, struct scd_mbx *mbxin); 152 153 static int scd_eject(int unit); 154 static int scd_stop(int unit); 155 static int scd_pause(int unit); 156 static int scd_resume(int unit); 157 static int scd_playtracks(int unit, struct ioc_play_track *pt); 158 static int scd_playmsf(int unit, struct ioc_play_msf *msf); 159 static int scd_play(int unit, struct ioc_play_msf *msf); 160 static int scd_subchan(int unit, struct ioc_read_subchannel *sc); 161 static int read_subcode(int unit, struct sony_subchannel_position_data *sc); 162 163 /* for xcdplayer */ 164 static int scd_toc_header(int unit, struct ioc_toc_header *th); 165 static int scd_toc_entrys(int unit, struct ioc_read_toc_entry *te); 166 static int scd_toc_entry(int unit, struct ioc_read_toc_single_entry *te); 167 #define SCD_LASTPLUS1 170 /* don't ask, xcdplayer passes this in */ 168 169 static int scd_probe(struct isa_device *dev); 170 static int scd_attach(struct isa_device *dev); 171 struct isa_driver scddriver = { scd_probe, scd_attach, "scd" }; 172 173 /* For canceling our timeout */ 174 static struct callout_handle tohandle = CALLOUT_HANDLE_INITIALIZER(&tohanle); 175 176 static d_open_t scdopen; 177 static d_close_t scdclose; 178 static d_ioctl_t scdioctl; 179 static d_strategy_t scdstrategy; 180 181 #define CDEV_MAJOR 45 182 #define BDEV_MAJOR 16 183 static struct cdevsw scd_cdevsw = { 184 /* open */ scdopen, 185 /* close */ scdclose, 186 /* read */ physread, 187 /* write */ nowrite, 188 /* ioctl */ scdioctl, 189 /* poll */ nopoll, 190 /* mmap */ nommap, 191 /* strategy */ scdstrategy, 192 /* name */ "scd", 193 /* maj */ CDEV_MAJOR, 194 /* dump */ nodump, 195 /* psize */ nopsize, 196 /* flags */ D_DISK, 197 /* bmaj */ BDEV_MAJOR 198 }; 199 200 201 static int 202 scd_attach(struct isa_device *dev) 203 { 204 int unit = dev->id_unit; 205 struct scd_data *cd = scd_data + unit; 206 207 cd->iobase = dev->id_iobase; /* Already set by probe, but ... */ 208 209 /* name filled in probe */ 210 printf("scd%d: <%s>\n", dev->id_unit, scd_data[dev->id_unit].name); 211 212 init_drive(dev->id_unit); 213 214 cd->flags = SCDINIT; 215 cd->audio_status = CD_AS_AUDIO_INVALID; 216 bufq_init(&cd->head); 217 218 make_dev(&scd_cdevsw, dkmakeminor(unit, 0, 0), 219 UID_ROOT, GID_OPERATOR, 0640, "rscd%da", unit); 220 make_dev(&scd_cdevsw, dkmakeminor(unit, 0, RAW_PART), 221 UID_ROOT, GID_OPERATOR, 0640, "rscd%dc", unit); 222 make_dev(&scd_cdevsw, dkmakeminor(unit, 0, 0), 223 UID_ROOT, GID_OPERATOR, 0640, "scd%da", unit); 224 make_dev(&scd_cdevsw, dkmakeminor(unit, 0, RAW_PART), 225 UID_ROOT, GID_OPERATOR, 0640, "scd%dc", unit); 226 return 1; 227 } 228 229 static int 230 scdopen(dev_t dev, int flags, int fmt, struct proc *p) 231 { 232 int unit,part,phys; 233 int rc; 234 struct scd_data *cd; 235 236 unit = scd_unit(dev); 237 if (unit >= NSCD) 238 return ENXIO; 239 240 cd = scd_data + unit; 241 part = scd_part(dev); 242 phys = scd_phys(dev); 243 244 /* not initialized*/ 245 if (!(cd->flags & SCDINIT)) 246 return ENXIO; 247 248 /* invalidated in the meantime? mark all open part's invalid */ 249 if (cd->openflag) 250 return ENXIO; 251 252 XDEBUG(1,("scd%d: DEBUG: status = 0x%x\n", unit, inb(cd->iobase+IREG_STATUS))); 253 254 if ((rc = spin_up(unit)) != 0) { 255 print_error(unit, rc); 256 return EIO; 257 } 258 if (!(cd->flags & SCDTOC)) { 259 int loop_count = 3; 260 261 while (loop_count-- > 0 && (rc = read_toc(unit)) != 0) { 262 if (rc == ERR_NOT_SPINNING) { 263 rc = spin_up(unit); 264 if (rc) { 265 print_error(unit, rc);\ 266 return EIO; 267 } 268 continue; 269 } 270 printf("scd%d: TOC read error 0x%x\n", unit, rc); 271 return EIO; 272 } 273 } 274 275 dev->si_bsize_phys = cd->blksize; 276 277 cd->openflag = 1; 278 cd->flags |= SCDVALID; 279 280 return 0; 281 } 282 283 static int 284 scdclose(dev_t dev, int flags, int fmt, struct proc *p) 285 { 286 int unit,part,phys; 287 struct scd_data *cd; 288 289 unit = scd_unit(dev); 290 if (unit >= NSCD) 291 return ENXIO; 292 293 cd = scd_data + unit; 294 part = scd_part(dev); 295 phys = scd_phys(dev); 296 297 if (!(cd->flags & SCDINIT) || !cd->openflag) 298 return ENXIO; 299 300 if (cd->audio_status != CD_AS_PLAY_IN_PROGRESS) { 301 (void)send_cmd(unit, CMD_SPIN_DOWN, 0); 302 cd->flags &= ~SCDSPINNING; 303 } 304 305 306 /* close channel */ 307 cd->openflag = 0; 308 309 return 0; 310 } 311 312 static void 313 scdstrategy(struct buf *bp) 314 { 315 struct scd_data *cd; 316 int s; 317 int unit = scd_unit(bp->b_dev); 318 319 cd = scd_data + unit; 320 321 XDEBUG(2, ("scd%d: DEBUG: strategy: block=%ld, bcount=%ld\n", 322 unit, (long)bp->b_blkno, bp->b_bcount)); 323 324 if (unit >= NSCD || bp->b_blkno < 0 || (bp->b_bcount % SCDBLKSIZE)) { 325 printf("scd%d: strategy failure: blkno = %ld, bcount = %ld\n", 326 unit, (long)bp->b_blkno, bp->b_bcount); 327 bp->b_error = EINVAL; 328 bp->b_flags |= B_ERROR; 329 goto bad; 330 } 331 332 /* if device invalidated (e.g. media change, door open), error */ 333 if (!(cd->flags & SCDVALID)) { 334 printf("scd%d: media changed\n", unit); 335 bp->b_error = EIO; 336 goto bad; 337 } 338 339 /* read only */ 340 if (!(bp->b_flags & B_READ)) { 341 bp->b_error = EROFS; 342 goto bad; 343 } 344 345 /* no data to read */ 346 if (bp->b_bcount == 0) 347 goto done; 348 349 if (!(cd->flags & SCDTOC)) { 350 bp->b_error = EIO; 351 goto bad; 352 } 353 /* adjust transfer if necessary */ 354 if (bounds_check_with_label(bp,&cd->dlabel,1) <= 0) 355 goto done; 356 357 bp->b_pblkno = bp->b_blkno; 358 bp->b_resid = 0; 359 360 /* queue it */ 361 s = splbio(); 362 bufqdisksort(&cd->head, bp); 363 splx(s); 364 365 /* now check whether we can perform processing */ 366 scd_start(unit); 367 return; 368 369 bad: 370 bp->b_flags |= B_ERROR; 371 done: 372 bp->b_resid = bp->b_bcount; 373 biodone(bp); 374 return; 375 } 376 377 static void 378 scd_start(int unit) 379 { 380 struct scd_data *cd = scd_data + unit; 381 struct buf *bp; 382 struct partition *p; 383 int s = splbio(); 384 385 if (cd->flags & SCDMBXBSY) { 386 splx(s); 387 return; 388 } 389 390 bp = bufq_first(&cd->head); 391 if (bp != 0) { 392 /* block found to process, dequeue */ 393 bufq_remove(&cd->head, bp); 394 cd->flags |= SCDMBXBSY; 395 splx(s); 396 } else { 397 /* nothing to do */ 398 splx(s); 399 return; 400 } 401 402 p = cd->dlabel.d_partitions + scd_part(bp->b_dev); 403 404 cd->mbx.unit = unit; 405 cd->mbx.port = cd->iobase; 406 cd->mbx.retry = 3; 407 cd->mbx.bp = bp; 408 cd->mbx.p_offset = p->p_offset; 409 splx(s); 410 411 scd_doread(SCD_S_BEGIN,&(cd->mbx)); 412 return; 413 } 414 415 static int 416 scdioctl(dev_t dev, u_long cmd, caddr_t addr, int flags, struct proc *p) 417 { 418 struct scd_data *cd; 419 int unit,part; 420 421 unit = scd_unit(dev); 422 part = scd_part(dev); 423 cd = scd_data + unit; 424 425 XDEBUG(1, ("scd%d: ioctl: cmd=0x%lx\n", unit, cmd)); 426 427 if (!(cd->flags & SCDVALID)) 428 return EIO; 429 430 switch (cmd) { 431 case DIOCGDINFO: 432 *(struct disklabel *)addr = cd->dlabel; 433 return 0; 434 case DIOCGPART: 435 ((struct partinfo *)addr)->disklab = &cd->dlabel; 436 ((struct partinfo *)addr)->part = 437 &cd->dlabel.d_partitions[0]; 438 return 0; 439 case CDIOCPLAYTRACKS: 440 return scd_playtracks(unit, (struct ioc_play_track *) addr); 441 case CDIOCPLAYBLOCKS: 442 return EINVAL; 443 case CDIOCPLAYMSF: 444 return scd_playmsf(unit, (struct ioc_play_msf *) addr); 445 case CDIOCREADSUBCHANNEL: 446 return scd_subchan(unit, (struct ioc_read_subchannel *) addr); 447 case CDIOREADTOCHEADER: 448 return scd_toc_header (unit, (struct ioc_toc_header *) addr); 449 case CDIOREADTOCENTRYS: 450 return scd_toc_entrys (unit, (struct ioc_read_toc_entry*) addr); 451 case CDIOREADTOCENTRY: 452 return scd_toc_entry (unit, (struct ioc_read_toc_single_entry*) addr); 453 case CDIOCSETPATCH: 454 case CDIOCGETVOL: 455 case CDIOCSETVOL: 456 case CDIOCSETMONO: 457 case CDIOCSETSTERIO: 458 case CDIOCSETMUTE: 459 case CDIOCSETLEFT: 460 case CDIOCSETRIGHT: 461 return EINVAL; 462 case CDIOCRESUME: 463 return scd_resume(unit); 464 case CDIOCPAUSE: 465 return scd_pause(unit); 466 case CDIOCSTART: 467 return EINVAL; 468 case CDIOCSTOP: 469 return scd_stop(unit); 470 case CDIOCEJECT: 471 return scd_eject(unit); 472 case CDIOCALLOW: 473 return 0; 474 case CDIOCSETDEBUG: 475 #ifdef SCD_DEBUG 476 scd_debuglevel++; 477 #endif 478 return 0; 479 case CDIOCCLRDEBUG: 480 #ifdef SCD_DEBUG 481 scd_debuglevel = 0; 482 483 #endif 484 return 0; 485 default: 486 printf("scd%d: unsupported ioctl (cmd=0x%lx)\n", unit, cmd); 487 return ENOTTY; 488 } 489 } 490 491 /*************************************************************** 492 * lower level of driver starts here 493 **************************************************************/ 494 495 static int 496 scd_playtracks(int unit, struct ioc_play_track *pt) 497 { 498 struct scd_data *cd = scd_data + unit; 499 struct ioc_play_msf msf; 500 int a = pt->start_track; 501 int z = pt->end_track; 502 int rc; 503 504 if (!(cd->flags & SCDTOC) && (rc = read_toc(unit)) != 0) { 505 if (rc == -ERR_NOT_SPINNING) { 506 if (spin_up(unit) != 0) 507 return EIO; 508 rc = read_toc(unit); 509 } 510 if (rc != 0) { 511 print_error(unit, rc); 512 return EIO; 513 } 514 } 515 516 XDEBUG(1, ("scd%d: playtracks from %d:%d to %d:%d\n", unit, 517 a, pt->start_index, z, pt->end_index)); 518 519 if ( a < cd->first_track 520 || a > cd->last_track 521 || a > z 522 || z > cd->last_track) 523 return EINVAL; 524 525 bcopy(cd->toc[a].start_msf, &msf.start_m, 3); 526 hsg2msf(msf2hsg(cd->toc[z+1].start_msf)-1, &msf.end_m); 527 528 return scd_play(unit, &msf); 529 } 530 531 /* The start/end msf is expected to be in bin format */ 532 static int 533 scd_playmsf(int unit, struct ioc_play_msf *msfin) 534 { 535 struct ioc_play_msf msf; 536 537 msf.start_m = bin2bcd(msfin->start_m); 538 msf.start_s = bin2bcd(msfin->start_s); 539 msf.start_f = bin2bcd(msfin->start_f); 540 msf.end_m = bin2bcd(msfin->end_m); 541 msf.end_s = bin2bcd(msfin->end_s); 542 msf.end_f = bin2bcd(msfin->end_f); 543 544 return scd_play(unit, &msf); 545 } 546 547 /* The start/end msf is expected to be in bcd format */ 548 static int 549 scd_play(int unit, struct ioc_play_msf *msf) 550 { 551 struct scd_data *cd = scd_data + unit; 552 int i, rc; 553 554 XDEBUG(1, ("scd%d: playing: %02x:%02x:%02x -> %02x:%02x:%02x\n", unit, 555 msf->start_m, msf->start_s, msf->start_f, 556 msf->end_m, msf->end_s, msf->end_f)); 557 558 for (i = 0; i < 2; i++) { 559 rc = send_cmd(unit, CMD_PLAY_AUDIO, 7, 560 0x03, 561 msf->start_m, msf->start_s, msf->start_f, 562 msf->end_m, msf->end_s, msf->end_f); 563 if (rc == -ERR_NOT_SPINNING) { 564 cd->flags &= ~SCDSPINNING; 565 if (spin_up(unit) != 0) 566 return EIO; 567 } else if (rc < 0) { 568 print_error(unit, rc); 569 return EIO; 570 } else { 571 break; 572 } 573 } 574 cd->audio_status = CD_AS_PLAY_IN_PROGRESS; 575 bcopy((char *)msf, (char *)&cd->last_play, sizeof(struct ioc_play_msf)); 576 return 0; 577 } 578 579 static int 580 scd_stop(int unit) 581 { 582 struct scd_data *cd = scd_data + unit; 583 584 (void)send_cmd(unit, CMD_STOP_AUDIO, 0); 585 cd->audio_status = CD_AS_PLAY_COMPLETED; 586 return 0; 587 } 588 589 static int 590 scd_pause(int unit) 591 { 592 struct scd_data *cd = scd_data + unit; 593 struct sony_subchannel_position_data subpos; 594 595 if (cd->audio_status != CD_AS_PLAY_IN_PROGRESS) 596 return EINVAL; 597 598 if (read_subcode(unit, &subpos) != 0) 599 return EIO; 600 601 if (send_cmd(unit, CMD_STOP_AUDIO, 0) != 0) 602 return EIO; 603 604 cd->last_play.start_m = subpos.abs_msf[0]; 605 cd->last_play.start_s = subpos.abs_msf[1]; 606 cd->last_play.start_f = subpos.abs_msf[2]; 607 cd->audio_status = CD_AS_PLAY_PAUSED; 608 609 XDEBUG(1, ("scd%d: pause @ %02x:%02x:%02x\n", unit, 610 cd->last_play.start_m, 611 cd->last_play.start_s, 612 cd->last_play.start_f)); 613 614 return 0; 615 } 616 617 static int 618 scd_resume(int unit) 619 { 620 if (scd_data[unit].audio_status != CD_AS_PLAY_PAUSED) 621 return EINVAL; 622 return scd_play(unit, &scd_data[unit].last_play); 623 } 624 625 static int 626 scd_eject(int unit) 627 { 628 struct scd_data *cd = scd_data + unit; 629 630 cd->audio_status = CD_AS_AUDIO_INVALID; 631 cd->flags &= ~(SCDSPINNING|SCDTOC); 632 633 if (send_cmd(unit, CMD_STOP_AUDIO, 0) != 0 || 634 send_cmd(unit, CMD_SPIN_DOWN, 0) != 0 || 635 send_cmd(unit, CMD_EJECT, 0) != 0) 636 { 637 return EIO; 638 } 639 return 0; 640 } 641 642 static int 643 scd_subchan(int unit, struct ioc_read_subchannel *sc) 644 { 645 struct scd_data *cd = scd_data + unit; 646 struct sony_subchannel_position_data q; 647 struct cd_sub_channel_info data; 648 649 XDEBUG(1, ("scd%d: subchan af=%d, df=%d\n", unit, 650 sc->address_format, 651 sc->data_format)); 652 653 if (sc->address_format != CD_MSF_FORMAT) 654 return EINVAL; 655 656 if (sc->data_format != CD_CURRENT_POSITION) 657 return EINVAL; 658 659 if (read_subcode(unit, &q) != 0) 660 return EIO; 661 662 data.header.audio_status = cd->audio_status; 663 data.what.position.data_format = CD_MSF_FORMAT; 664 data.what.position.track_number = bcd2bin(q.track_number); 665 data.what.position.reladdr.msf.unused = 0; 666 data.what.position.reladdr.msf.minute = bcd2bin(q.rel_msf[0]); 667 data.what.position.reladdr.msf.second = bcd2bin(q.rel_msf[1]); 668 data.what.position.reladdr.msf.frame = bcd2bin(q.rel_msf[2]); 669 data.what.position.absaddr.msf.unused = 0; 670 data.what.position.absaddr.msf.minute = bcd2bin(q.abs_msf[0]); 671 data.what.position.absaddr.msf.second = bcd2bin(q.abs_msf[1]); 672 data.what.position.absaddr.msf.frame = bcd2bin(q.abs_msf[2]); 673 674 if (copyout(&data, sc->data, min(sizeof(struct cd_sub_channel_info), sc->data_len))!=0) 675 return EFAULT; 676 return 0; 677 } 678 679 static __inline void 680 write_control(unsigned port, unsigned data) 681 { 682 outb(port + OREG_CONTROL, data); 683 } 684 685 static int 686 scd_probe(struct isa_device *dev) 687 { 688 struct sony_drive_configuration drive_config; 689 int unit = dev->id_unit; 690 int rc; 691 static char namebuf[8+16+8+3]; 692 char *s = namebuf; 693 int loop_count = 0; 694 static int once; 695 696 if (!once++) 697 cdevsw_add(&scd_cdevsw); 698 699 scd_data[unit].flags = SCDPROBING; 700 scd_data[unit].iobase = dev->id_iobase; 701 702 bzero(&drive_config, sizeof(drive_config)); 703 704 again: 705 /* Reset drive */ 706 write_control(dev->id_iobase, CBIT_RESET_DRIVE); 707 708 /* Calm down */ 709 DELAY(300000); 710 711 /* Only the ATTENTION bit may be set */ 712 if ((inb(dev->id_iobase+IREG_STATUS) & ~1) != 0) { 713 XDEBUG(1, ("scd: too many bits set. probe failed.\n")); 714 return 0; 715 } 716 rc = send_cmd(unit, CMD_GET_DRIVE_CONFIG, 0); 717 if (rc != sizeof(drive_config)) { 718 /* Sometimes if the drive is playing audio I get */ 719 /* the bad result 82. Fix by repeating the reset */ 720 if (rc > 0 && loop_count++ == 0) 721 goto again; 722 return 0; 723 } 724 if (get_result(unit, rc, (u_char *)&drive_config) != 0) 725 return 0; 726 727 bcopy(drive_config.vendor, namebuf, 8); 728 s = namebuf+8; 729 while (*(s-1) == ' ') /* Strip trailing spaces */ 730 s--; 731 *s++ = ' '; 732 bcopy(drive_config.product, s, 16); 733 s += 16; 734 while (*(s-1) == ' ') 735 s--; 736 *s++ = ' '; 737 bcopy(drive_config.revision, s, 8); 738 s += 8; 739 while (*(s-1) == ' ') 740 s--; 741 *s = 0; 742 743 scd_data[unit].name = namebuf; 744 745 if (drive_config.config & 0x10) 746 scd_data[unit].double_speed = 1; 747 else 748 scd_data[unit].double_speed = 0; 749 750 return 4; 751 } 752 753 static int 754 read_subcode(int unit, struct sony_subchannel_position_data *sc) 755 { 756 int rc; 757 758 rc = send_cmd(unit, CMD_GET_SUBCHANNEL_DATA, 0); 759 if (rc < 0 || rc < sizeof(*sc)) 760 return EIO; 761 if (get_result(unit, rc, (u_char *)sc) != 0) 762 return EIO; 763 return 0; 764 } 765 766 /* State machine copied from mcd.c */ 767 768 /* This (and the code in mcd.c) will not work with more than one drive */ 769 /* because there is only one mbxsave below. Should fix that some day. */ 770 /* (mbxsave & state should probably be included in the scd_data struct and */ 771 /* the unit number used as first argument to scd_doread().) /Micke */ 772 773 /* state machine to process read requests 774 * initialize with SCD_S_BEGIN: reset state machine 775 * SCD_S_WAITSTAT: wait for ready (!busy) 776 * SCD_S_WAITSPIN: wait for drive to spin up (if not spinning) 777 * SCD_S_WAITFIFO: wait for param fifo to get ready, them exec. command. 778 * SCD_S_WAITREAD: wait for data ready, read data 779 * SCD_S_WAITPARAM: wait for command result params, read them, error if bad data read. 780 */ 781 782 static struct scd_mbx *mbxsave; 783 784 static void 785 scd_timeout(void *arg) 786 { 787 scd_doread((int)arg, mbxsave); 788 } 789 790 static void 791 scd_doread(int state, struct scd_mbx *mbxin) 792 { 793 struct scd_mbx *mbx = (state!=SCD_S_BEGIN) ? mbxsave : mbxin; 794 int unit = mbx->unit; 795 int port = mbx->port; 796 struct buf *bp = mbx->bp; 797 struct scd_data *cd = scd_data + unit; 798 int reg,i; 799 int blknum; 800 caddr_t addr; 801 static char sdata[3]; /* Must be preserved between calls to this function */ 802 803 loop: 804 switch (state) { 805 case SCD_S_BEGIN: 806 mbx = mbxsave = mbxin; 807 808 case SCD_S_BEGIN1: 809 /* get status */ 810 mbx->count = RDELAY_WAIT; 811 812 process_attention(unit); 813 goto trystat; 814 815 case SCD_S_WAITSTAT: 816 untimeout(scd_timeout,(caddr_t)SCD_S_WAITSTAT, tohandle); 817 if (mbx->count-- <= 0) { 818 printf("scd%d: timeout. drive busy.\n",unit); 819 goto harderr; 820 } 821 822 trystat: 823 if (IS_BUSY(port)) { 824 tohandle = timeout(scd_timeout, 825 (caddr_t)SCD_S_WAITSTAT,hz/100); /* XXX */ 826 return; 827 } 828 829 process_attention(unit); 830 831 /* reject, if audio active */ 832 if (cd->audio_status & CD_AS_PLAY_IN_PROGRESS) { 833 printf("scd%d: audio is active\n",unit); 834 goto harderr; 835 } 836 837 mbx->sz = cd->blksize; 838 839 /* for first block */ 840 mbx->nblk = (bp->b_bcount + (mbx->sz-1)) / mbx->sz; 841 mbx->skip = 0; 842 843 nextblock: 844 if (!(cd->flags & SCDVALID)) 845 goto changed; 846 847 blknum = (bp->b_blkno / (mbx->sz/DEV_BSIZE)) 848 + mbx->p_offset + mbx->skip/mbx->sz; 849 850 XDEBUG(2, ("scd%d: scd_doread: read blknum=%d\n", unit, blknum)); 851 852 /* build parameter block */ 853 hsg2msf(blknum, sdata); 854 855 write_control(port, CBIT_RESULT_READY_CLEAR); 856 write_control(port, CBIT_RPARAM_CLEAR); 857 write_control(port, CBIT_DATA_READY_CLEAR); 858 859 if (FSTATUS_BIT(port, FBIT_WPARAM_READY)) 860 goto writeparam; 861 862 mbx->count = 100; 863 tohandle = timeout(scd_timeout, 864 (caddr_t)SCD_S_WAITFIFO,hz/100); /* XXX */ 865 return; 866 867 case SCD_S_WAITSPIN: 868 untimeout(scd_timeout,(caddr_t)SCD_S_WAITSPIN, tohandle); 869 if (mbx->count-- <= 0) { 870 printf("scd%d: timeout waiting for drive to spin up.\n", unit); 871 goto harderr; 872 } 873 if (!STATUS_BIT(port, SBIT_RESULT_READY)) { 874 tohandle = timeout(scd_timeout, 875 (caddr_t)SCD_S_WAITSPIN,hz/100); /* XXX */ 876 return; 877 } 878 write_control(port, CBIT_RESULT_READY_CLEAR); 879 switch ((i = inb(port+IREG_RESULT)) & 0xf0) { 880 case 0x20: 881 i = inb(port+IREG_RESULT); 882 print_error(unit, i); 883 goto harderr; 884 case 0x00: 885 (void)inb(port+IREG_RESULT); 886 cd->flags |= SCDSPINNING; 887 break; 888 } 889 XDEBUG(1, ("scd%d: DEBUG: spin up complete\n", unit)); 890 891 state = SCD_S_BEGIN1; 892 goto loop; 893 894 case SCD_S_WAITFIFO: 895 untimeout(scd_timeout,(caddr_t)SCD_S_WAITFIFO, tohandle); 896 if (mbx->count-- <= 0) { 897 printf("scd%d: timeout. write param not ready.\n",unit); 898 goto harderr; 899 } 900 if (!FSTATUS_BIT(port, FBIT_WPARAM_READY)) { 901 tohandle = timeout(scd_timeout, 902 (caddr_t)SCD_S_WAITFIFO,hz/100); /* XXX */ 903 return; 904 } 905 XDEBUG(1, ("scd%d: mbx->count (writeparamwait) = %d(%d)\n", unit, mbx->count, 100)); 906 907 writeparam: 908 /* The reason this test isn't done 'till now is to make sure */ 909 /* that it is ok to send the SPIN_UP cmd below. */ 910 if (!(cd->flags & SCDSPINNING)) { 911 XDEBUG(1, ("scd%d: spinning up drive ...\n", unit)); 912 outb(port+OREG_COMMAND, CMD_SPIN_UP); 913 mbx->count = 300; 914 tohandle = timeout(scd_timeout, 915 (caddr_t)SCD_S_WAITSPIN,hz/100); /* XXX */ 916 return; 917 } 918 919 reg = port + OREG_WPARAMS; 920 /* send the read command */ 921 disable_intr(); 922 outb(reg, sdata[0]); 923 outb(reg, sdata[1]); 924 outb(reg, sdata[2]); 925 outb(reg, 0); 926 outb(reg, 0); 927 outb(reg, 1); 928 outb(port+OREG_COMMAND, CMD_READ); 929 enable_intr(); 930 931 mbx->count = RDELAY_WAITREAD; 932 for (i = 0; i < 50; i++) { 933 if (STATUS_BIT(port, SBIT_DATA_READY)) 934 goto got_data; 935 DELAY(100); 936 } 937 938 tohandle = timeout(scd_timeout, 939 (caddr_t)SCD_S_WAITREAD,hz/100); /* XXX */ 940 return; 941 942 case SCD_S_WAITREAD: 943 untimeout(scd_timeout,(caddr_t)SCD_S_WAITREAD, tohandle); 944 if (mbx->count-- <= 0) { 945 if (STATUS_BIT(port, SBIT_RESULT_READY)) 946 goto got_param; 947 printf("scd%d: timeout while reading data\n",unit); 948 goto readerr; 949 } 950 if (!STATUS_BIT(port, SBIT_DATA_READY)) { 951 process_attention(unit); 952 if (!(cd->flags & SCDVALID)) 953 goto changed; 954 tohandle = timeout(scd_timeout, 955 (caddr_t)SCD_S_WAITREAD,hz/100); /* XXX */ 956 return; 957 } 958 XDEBUG(2, ("scd%d: mbx->count (after RDY_BIT) = %d(%d)\n", unit, mbx->count, RDELAY_WAITREAD)); 959 960 got_data: 961 /* data is ready */ 962 addr = bp->b_data + mbx->skip; 963 write_control(port, CBIT_DATA_READY_CLEAR); 964 insb(port+IREG_DATA, addr, mbx->sz); 965 966 mbx->count = 100; 967 for (i = 0; i < 20; i++) { 968 if (STATUS_BIT(port, SBIT_RESULT_READY)) 969 goto waitfor_param; 970 DELAY(100); 971 } 972 goto waitfor_param; 973 974 case SCD_S_WAITPARAM: 975 untimeout(scd_timeout,(caddr_t)SCD_S_WAITPARAM, tohandle); 976 if (mbx->count-- <= 0) { 977 printf("scd%d: timeout waiting for params\n",unit); 978 goto readerr; 979 } 980 981 waitfor_param: 982 if (!STATUS_BIT(port, SBIT_RESULT_READY)) { 983 tohandle = timeout(scd_timeout, 984 (caddr_t)SCD_S_WAITPARAM,hz/100); /* XXX */ 985 return; 986 } 987 #if SCD_DEBUG 988 if (mbx->count < 100 && scd_debuglevel > 0) 989 printf("scd%d: mbx->count (paramwait) = %d(%d)\n", unit, mbx->count, 100); 990 #endif 991 992 got_param: 993 write_control(port, CBIT_RESULT_READY_CLEAR); 994 switch ((i = inb(port+IREG_RESULT)) & 0xf0) { 995 case 0x50: 996 switch (i) { 997 case ERR_FATAL_READ_ERROR1: 998 case ERR_FATAL_READ_ERROR2: 999 printf("scd%d: unrecoverable read error 0x%x\n", unit, i); 1000 goto harderr; 1001 } 1002 break; 1003 case 0x20: 1004 i = inb(port+IREG_RESULT); 1005 switch (i) { 1006 case ERR_NOT_SPINNING: 1007 XDEBUG(1, ("scd%d: read error: drive not spinning\n", unit)); 1008 if (mbx->retry-- > 0) { 1009 state = SCD_S_BEGIN1; 1010 cd->flags &= ~SCDSPINNING; 1011 goto loop; 1012 } 1013 goto harderr; 1014 default: 1015 print_error(unit, i); 1016 goto readerr; 1017 } 1018 case 0x00: 1019 i = inb(port+IREG_RESULT); 1020 break; 1021 } 1022 1023 if (--mbx->nblk > 0) { 1024 mbx->skip += mbx->sz; 1025 goto nextblock; 1026 } 1027 1028 /* return buffer */ 1029 bp->b_resid = 0; 1030 biodone(bp); 1031 1032 cd->flags &= ~SCDMBXBSY; 1033 scd_start(mbx->unit); 1034 return; 1035 } 1036 1037 readerr: 1038 if (mbx->retry-- > 0) { 1039 printf("scd%d: retrying ...\n",unit); 1040 state = SCD_S_BEGIN1; 1041 goto loop; 1042 } 1043 harderr: 1044 /* invalidate the buffer */ 1045 bp->b_error = EIO; 1046 bp->b_flags |= B_ERROR; 1047 bp->b_resid = bp->b_bcount; 1048 biodone(bp); 1049 1050 cd->flags &= ~SCDMBXBSY; 1051 scd_start(mbx->unit); 1052 return; 1053 1054 changed: 1055 printf("scd%d: media changed\n", unit); 1056 goto harderr; 1057 } 1058 1059 static void 1060 hsg2msf(int hsg, bcd_t *msf) 1061 { 1062 hsg += 150; 1063 M_msf(msf) = bin2bcd(hsg / 4500); 1064 hsg %= 4500; 1065 S_msf(msf) = bin2bcd(hsg / 75); 1066 F_msf(msf) = bin2bcd(hsg % 75); 1067 } 1068 1069 static int 1070 msf2hsg(bcd_t *msf) 1071 { 1072 return (bcd2bin(M_msf(msf)) * 60 + 1073 bcd2bin(S_msf(msf))) * 75 + 1074 bcd2bin(F_msf(msf)) - 150; 1075 } 1076 1077 static void 1078 process_attention(unsigned unit) 1079 { 1080 unsigned port = scd_data[unit].iobase; 1081 unsigned char code; 1082 int count = 0; 1083 1084 while (IS_ATTENTION(port) && count++ < 30) { 1085 write_control(port, CBIT_ATTENTION_CLEAR); 1086 code = inb(port+IREG_RESULT); 1087 1088 #if SCD_DEBUG 1089 if (scd_debuglevel > 0) { 1090 if (count == 1) 1091 printf("scd%d: DEBUG: ATTENTIONS = 0x%x", unit, code); 1092 else 1093 printf(",0x%x", code); 1094 } 1095 #endif 1096 1097 switch (code) { 1098 case ATTEN_SPIN_DOWN: 1099 scd_data[unit].flags &= ~SCDSPINNING; 1100 break; 1101 1102 case ATTEN_SPIN_UP_DONE: 1103 scd_data[unit].flags |= SCDSPINNING; 1104 break; 1105 1106 case ATTEN_AUDIO_DONE: 1107 scd_data[unit].audio_status = CD_AS_PLAY_COMPLETED; 1108 break; 1109 1110 case ATTEN_DRIVE_LOADED: 1111 scd_data[unit].flags &= ~(SCDTOC|SCDSPINNING|SCDVALID); 1112 scd_data[unit].audio_status = CD_AS_AUDIO_INVALID; 1113 break; 1114 1115 case ATTEN_EJECT_PUSHED: 1116 scd_data[unit].flags &= ~SCDVALID; 1117 break; 1118 } 1119 DELAY(100); 1120 } 1121 #if SCD_DEBUG 1122 if (scd_debuglevel > 0 && count > 0) 1123 printf("\n"); 1124 #endif 1125 } 1126 1127 /* Returns 0 OR sony error code */ 1128 static int 1129 spin_up(unsigned unit) 1130 { 1131 unsigned char res_reg[12]; 1132 unsigned int res_size; 1133 int rc; 1134 int loop_count = 0; 1135 1136 again: 1137 rc = send_cmd(unit, CMD_SPIN_UP, 0, 0, res_reg, &res_size); 1138 if (rc != 0) { 1139 XDEBUG(2, ("scd%d: CMD_SPIN_UP error 0x%x\n", unit, rc)); 1140 return rc; 1141 } 1142 1143 if (!(scd_data[unit].flags & SCDTOC)) { 1144 rc = send_cmd(unit, CMD_READ_TOC, 0); 1145 if (rc == ERR_NOT_SPINNING) { 1146 if (loop_count++ < 3) 1147 goto again; 1148 return rc; 1149 } 1150 if (rc != 0) 1151 return rc; 1152 } 1153 1154 scd_data[unit].flags |= SCDSPINNING; 1155 1156 return 0; 1157 } 1158 1159 static struct sony_tracklist * 1160 get_tl(struct sony_toc *toc, int size) 1161 { 1162 struct sony_tracklist *tl = &toc->tracks[0]; 1163 1164 if (tl->track != 0xb0) 1165 return tl; 1166 (char *)tl += 9; 1167 if (tl->track != 0xb1) 1168 return tl; 1169 (char *)tl += 9; 1170 if (tl->track != 0xb2) 1171 return tl; 1172 (char *)tl += 9; 1173 if (tl->track != 0xb3) 1174 return tl; 1175 (char *)tl += 9; 1176 if (tl->track != 0xb4) 1177 return tl; 1178 (char *)tl += 9; 1179 if (tl->track != 0xc0) 1180 return tl; 1181 (char *)tl += 9; 1182 return tl; 1183 } 1184 1185 static int 1186 read_toc(unsigned unit) 1187 { 1188 struct scd_data *cd; 1189 unsigned part = 0; /* For now ... */ 1190 struct sony_toc toc; 1191 struct sony_tracklist *tl; 1192 int rc, i, j; 1193 u_long first, last; 1194 1195 cd = scd_data + unit; 1196 1197 rc = send_cmd(unit, CMD_GET_TOC, 1, part+1); 1198 if (rc < 0) 1199 return rc; 1200 if (rc > sizeof(toc)) { 1201 printf("scd%d: program error: toc too large (%d)\n", unit, rc); 1202 return EIO; 1203 } 1204 if (get_result(unit, rc, (u_char *)&toc) != 0) 1205 return EIO; 1206 1207 XDEBUG(1, ("scd%d: toc read. len = %d, sizeof(toc) = %d\n", unit, rc, sizeof(toc))); 1208 1209 tl = get_tl(&toc, rc); 1210 first = msf2hsg(tl->start_msf); 1211 last = msf2hsg(toc.lead_out_start_msf); 1212 cd->blksize = SCDBLKSIZE; 1213 cd->disksize = last*cd->blksize/DEV_BSIZE; 1214 1215 XDEBUG(1, ("scd%d: firstsector = %ld, lastsector = %ld", unit, 1216 first, last)); 1217 1218 cd->first_track = bcd2bin(toc.first_track); 1219 cd->last_track = bcd2bin(toc.last_track); 1220 if (cd->last_track > (MAX_TRACKS-2)) 1221 cd->last_track = MAX_TRACKS-2; 1222 for (j = 0, i = cd->first_track; i <= cd->last_track; i++, j++) { 1223 cd->toc[i].adr = tl[j].adr; 1224 cd->toc[i].ctl = tl[j].ctl; /* for xcdplayer */ 1225 bcopy(tl[j].start_msf, cd->toc[i].start_msf, 3); 1226 #ifdef SCD_DEBUG 1227 if (scd_debuglevel > 0) { 1228 if ((j % 3) == 0) 1229 printf("\nscd%d: tracks ", unit); 1230 printf("[%03d: %2d %2d %2d] ", i, 1231 bcd2bin(cd->toc[i].start_msf[0]), 1232 bcd2bin(cd->toc[i].start_msf[1]), 1233 bcd2bin(cd->toc[i].start_msf[2])); 1234 } 1235 #endif 1236 } 1237 bcopy(toc.lead_out_start_msf, cd->toc[cd->last_track+1].start_msf, 3); 1238 #ifdef SCD_DEBUG 1239 if (scd_debuglevel > 0) { 1240 i = cd->last_track+1; 1241 printf("[END: %2d %2d %2d]\n", 1242 bcd2bin(cd->toc[i].start_msf[0]), 1243 bcd2bin(cd->toc[i].start_msf[1]), 1244 bcd2bin(cd->toc[i].start_msf[2])); 1245 } 1246 #endif 1247 1248 bzero(&cd->dlabel,sizeof(struct disklabel)); 1249 /* filled with spaces first */ 1250 strncpy(cd->dlabel.d_typename," ", 1251 sizeof(cd->dlabel.d_typename)); 1252 strncpy(cd->dlabel.d_typename, cd->name, 1253 min(strlen(cd->name), sizeof(cd->dlabel.d_typename) - 1)); 1254 strncpy(cd->dlabel.d_packname,"unknown ", 1255 sizeof(cd->dlabel.d_packname)); 1256 cd->dlabel.d_secsize = cd->blksize; 1257 cd->dlabel.d_nsectors = 100; 1258 cd->dlabel.d_ntracks = 1; 1259 cd->dlabel.d_ncylinders = (cd->disksize/100)+1; 1260 cd->dlabel.d_secpercyl = 100; 1261 cd->dlabel.d_secperunit = cd->disksize; 1262 cd->dlabel.d_rpm = 300; 1263 cd->dlabel.d_interleave = 1; 1264 cd->dlabel.d_flags = D_REMOVABLE; 1265 cd->dlabel.d_npartitions= 1; 1266 cd->dlabel.d_partitions[0].p_offset = 0; 1267 cd->dlabel.d_partitions[0].p_size = cd->disksize; 1268 cd->dlabel.d_partitions[0].p_fstype = 9; 1269 cd->dlabel.d_magic = DISKMAGIC; 1270 cd->dlabel.d_magic2 = DISKMAGIC; 1271 cd->dlabel.d_checksum = dkcksum(&cd->dlabel); 1272 1273 cd->flags |= SCDTOC; 1274 1275 return 0; 1276 } 1277 1278 static void 1279 init_drive(unsigned unit) 1280 { 1281 int rc; 1282 1283 rc = send_cmd(unit, CMD_SET_DRIVE_PARAM, 2, 1284 0x05, 0x03 | ((scd_data[unit].double_speed) ? 0x04: 0)); 1285 if (rc != 0) 1286 printf("scd%d: Unable to set parameters. Errcode = 0x%x\n", unit, rc); 1287 } 1288 1289 /* Returns 0 or errno */ 1290 static int 1291 get_result(u_int unit, int result_len, u_char *result) 1292 { 1293 unsigned int port = scd_data[unit].iobase; 1294 unsigned int res_reg = port + IREG_RESULT; 1295 int loop_index = 2; /* send_cmd() reads two bytes ... */ 1296 1297 XDEBUG(1, ("scd%d: DEBUG: get_result: bytes=%d\n", unit, result_len)); 1298 1299 while (result_len-- > 0) { 1300 if (loop_index++ >= 10) { 1301 loop_index = 1; 1302 if (waitfor_status_bits(unit, SBIT_RESULT_READY, 0)) 1303 return EIO; 1304 write_control(port, CBIT_RESULT_READY_CLEAR); 1305 } 1306 if (result) 1307 *result++ = inb(res_reg); 1308 else 1309 (void)inb(res_reg); 1310 } 1311 return 0; 1312 } 1313 1314 /* Returns -0x100 for timeout, -(drive error code) OR number of result bytes */ 1315 static int 1316 send_cmd(u_int unit, u_char cmd, u_int nargs, ...) 1317 { 1318 va_list ap; 1319 u_int port = scd_data[unit].iobase; 1320 u_int reg; 1321 u_char c; 1322 int rc; 1323 int i; 1324 1325 if (waitfor_status_bits(unit, 0, SBIT_BUSY)) { 1326 printf("scd%d: drive busy\n", unit); 1327 return -0x100; 1328 } 1329 1330 XDEBUG(1,("scd%d: DEBUG: send_cmd: cmd=0x%x nargs=%d", unit, cmd, nargs)); 1331 1332 write_control(port, CBIT_RESULT_READY_CLEAR); 1333 write_control(port, CBIT_RPARAM_CLEAR); 1334 1335 for (i = 0; i < 100; i++) 1336 if (FSTATUS_BIT(port, FBIT_WPARAM_READY)) 1337 break; 1338 if (!FSTATUS_BIT(port, FBIT_WPARAM_READY)) { 1339 XDEBUG(1, ("\nscd%d: wparam timeout\n", unit)); 1340 return -EIO; 1341 } 1342 1343 va_start(ap, nargs); 1344 reg = port + OREG_WPARAMS; 1345 for (i = 0; i < nargs; i++) { 1346 c = (u_char)va_arg(ap, int); 1347 outb(reg, c); 1348 XDEBUG(1, (",{0x%x}", c)); 1349 } 1350 va_end(ap); 1351 XDEBUG(1, ("\n")); 1352 1353 outb(port+OREG_COMMAND, cmd); 1354 1355 rc = waitfor_status_bits(unit, SBIT_RESULT_READY, SBIT_BUSY); 1356 if (rc) 1357 return -0x100; 1358 1359 reg = port + IREG_RESULT; 1360 write_control(port, CBIT_RESULT_READY_CLEAR); 1361 switch ((rc = inb(reg)) & 0xf0) { 1362 case 0x20: 1363 rc = inb(reg); 1364 /* FALL TROUGH */ 1365 case 0x50: 1366 XDEBUG(1, ("scd%d: DEBUG: send_cmd: drive_error=0x%x\n", unit, rc)); 1367 return -rc; 1368 case 0x00: 1369 default: 1370 rc = inb(reg); 1371 XDEBUG(1, ("scd%d: DEBUG: send_cmd: result_len=%d\n", unit, rc)); 1372 return rc; 1373 } 1374 } 1375 1376 static void 1377 print_error(int unit, int errcode) 1378 { 1379 switch (errcode) { 1380 case -ERR_CD_NOT_LOADED: 1381 printf("scd%d: door is open\n", unit); 1382 break; 1383 case -ERR_NO_CD_INSIDE: 1384 printf("scd%d: no cd inside\n", unit); 1385 break; 1386 default: 1387 if (errcode == -0x100 || errcode > 0) 1388 printf("scd%d: device timeout\n", unit); 1389 else 1390 printf("scd%d: unexpected error 0x%x\n", unit, -errcode); 1391 break; 1392 } 1393 } 1394 1395 /* Returns 0 or errno value */ 1396 static int 1397 waitfor_status_bits(int unit, int bits_set, int bits_clear) 1398 { 1399 u_int port = scd_data[unit].iobase; 1400 u_int flags = scd_data[unit].flags; 1401 u_int reg = port + IREG_STATUS; 1402 u_int max_loop; 1403 u_char c = 0; 1404 1405 if (flags & SCDPROBING) { 1406 max_loop = 0; 1407 while (max_loop++ < 1000) { 1408 c = inb(reg); 1409 if (c == 0xff) 1410 return EIO; 1411 if (c & SBIT_ATTENTION) { 1412 process_attention(unit); 1413 continue; 1414 } 1415 if ((c & bits_set) == bits_set && 1416 (c & bits_clear) == 0) 1417 { 1418 break; 1419 } 1420 DELAY(10000); 1421 } 1422 } else { 1423 max_loop = 100; 1424 while (max_loop-- > 0) { 1425 c = inb(reg); 1426 if (c & SBIT_ATTENTION) { 1427 process_attention(unit); 1428 continue; 1429 } 1430 if ((c & bits_set) == bits_set && 1431 (c & bits_clear) == 0) 1432 { 1433 break; 1434 } 1435 tsleep(waitfor_status_bits, PZERO - 1, "waitfor", hz/10); 1436 } 1437 } 1438 if ((c & bits_set) == bits_set && 1439 (c & bits_clear) == 0) 1440 { 1441 return 0; 1442 } 1443 #ifdef SCD_DEBUG 1444 if (scd_debuglevel > 0) 1445 printf("scd%d: DEBUG: waitfor: TIMEOUT (0x%x,(0x%x,0x%x))\n", unit, c, bits_set, bits_clear); 1446 else 1447 #endif 1448 printf("scd%d: timeout.\n", unit); 1449 return EIO; 1450 } 1451 1452 /* these two routines for xcdplayer - "borrowed" from mcd.c */ 1453 static int 1454 scd_toc_header (int unit, struct ioc_toc_header* th) 1455 { 1456 struct scd_data *cd = scd_data + unit; 1457 int rc; 1458 1459 if (!(cd->flags & SCDTOC) && (rc = read_toc(unit)) != 0) { 1460 print_error(unit, rc); 1461 return EIO; 1462 } 1463 1464 th->starting_track = cd->first_track; 1465 th->ending_track = cd->last_track; 1466 th->len = 0; /* not used */ 1467 1468 return 0; 1469 } 1470 1471 static int 1472 scd_toc_entrys (int unit, struct ioc_read_toc_entry *te) 1473 { 1474 struct scd_data *cd = scd_data + unit; 1475 struct cd_toc_entry toc_entry; 1476 int rc, i, len = te->data_len; 1477 1478 if (!(cd->flags & SCDTOC) && (rc = read_toc(unit)) != 0) { 1479 print_error(unit, rc); 1480 return EIO; 1481 } 1482 1483 /* find the toc to copy*/ 1484 i = te->starting_track; 1485 if (i == SCD_LASTPLUS1) 1486 i = cd->last_track + 1; 1487 1488 /* verify starting track */ 1489 if (i < cd->first_track || i > cd->last_track+1) 1490 return EINVAL; 1491 1492 /* valid length ? */ 1493 if (len < sizeof(struct cd_toc_entry) 1494 || (len % sizeof(struct cd_toc_entry)) != 0) 1495 return EINVAL; 1496 1497 /* copy the toc data */ 1498 toc_entry.control = cd->toc[i].ctl; 1499 toc_entry.addr_type = te->address_format; 1500 toc_entry.track = i; 1501 if (te->address_format == CD_MSF_FORMAT) { 1502 toc_entry.addr.msf.unused = 0; 1503 toc_entry.addr.msf.minute = bcd2bin(cd->toc[i].start_msf[0]); 1504 toc_entry.addr.msf.second = bcd2bin(cd->toc[i].start_msf[1]); 1505 toc_entry.addr.msf.frame = bcd2bin(cd->toc[i].start_msf[2]); 1506 } 1507 1508 /* copy the data back */ 1509 if (copyout(&toc_entry, te->data, sizeof(struct cd_toc_entry)) != 0) 1510 return EFAULT; 1511 1512 return 0; 1513 } 1514 1515 1516 static int 1517 scd_toc_entry (int unit, struct ioc_read_toc_single_entry *te) 1518 { 1519 struct scd_data *cd = scd_data + unit; 1520 struct cd_toc_entry toc_entry; 1521 int rc, i; 1522 1523 if (!(cd->flags & SCDTOC) && (rc = read_toc(unit)) != 0) { 1524 print_error(unit, rc); 1525 return EIO; 1526 } 1527 1528 /* find the toc to copy*/ 1529 i = te->track; 1530 if (i == SCD_LASTPLUS1) 1531 i = cd->last_track + 1; 1532 1533 /* verify starting track */ 1534 if (i < cd->first_track || i > cd->last_track+1) 1535 return EINVAL; 1536 1537 /* copy the toc data */ 1538 toc_entry.control = cd->toc[i].ctl; 1539 toc_entry.addr_type = te->address_format; 1540 toc_entry.track = i; 1541 if (te->address_format == CD_MSF_FORMAT) { 1542 toc_entry.addr.msf.unused = 0; 1543 toc_entry.addr.msf.minute = bcd2bin(cd->toc[i].start_msf[0]); 1544 toc_entry.addr.msf.second = bcd2bin(cd->toc[i].start_msf[1]); 1545 toc_entry.addr.msf.frame = bcd2bin(cd->toc[i].start_msf[2]); 1546 } 1547 1548 /* copy the data back */ 1549 bcopy(&toc_entry, &te->entry, sizeof(struct cd_toc_entry)); 1550 1551 return 0; 1552 }
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