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 #if NSCD > 0 52 #include "opt_devfs.h" 53 #include <sys/param.h> 54 #include <sys/systm.h> 55 #include <sys/conf.h> 56 #include <sys/buf.h> 57 #include <sys/cdio.h> 58 #include <sys/dkbad.h> 59 #include <sys/disklabel.h> 60 #include <sys/kernel.h> 61 #ifdef DEVFS 62 #include <sys/devfsext.h> 63 #endif /*DEVFS*/ 64 65 #include <machine/clock.h> 66 #include <machine/stdarg.h> 67 68 #include <i386/isa/isa_device.h> 69 #include <i386/isa/scdreg.h> 70 71 72 #define scd_part(dev) ((minor(dev)) & 7) 73 #define scd_unit(dev) (((minor(dev)) & 0x38) >> 3) 74 #define scd_phys(dev) (((minor(dev)) & 0x40) >> 6) 75 #define RAW_PART 2 76 77 /* flags */ 78 #define SCDOPEN 0x0001 /* device opened */ 79 #define SCDVALID 0x0002 /* parameters loaded */ 80 #define SCDINIT 0x0004 /* device is init'd */ 81 #define SCDPROBING 0x0020 /* probing */ 82 #define SCDTOC 0x0100 /* already read toc */ 83 #define SCDMBXBSY 0x0200 /* local mbx is busy */ 84 #define SCDSPINNING 0x0400 /* drive is spun up */ 85 86 #define SCD_S_BEGIN 0 87 #define SCD_S_BEGIN1 1 88 #define SCD_S_WAITSTAT 2 89 #define SCD_S_WAITFIFO 3 90 #define SCD_S_WAITSPIN 4 91 #define SCD_S_WAITREAD 5 92 #define SCD_S_WAITPARAM 6 93 94 #define RDELAY_WAIT 300 95 #define RDELAY_WAITREAD 300 96 97 #define SCDBLKSIZE 2048 98 99 #ifdef SCD_DEBUG 100 static int scd_debuglevel = SCD_DEBUG; 101 # define XDEBUG(level, data) {if (scd_debuglevel >= level) printf data;} 102 #else 103 # define XDEBUG(level, data) 104 #endif 105 106 struct scd_mbx { 107 short unit; 108 short port; 109 short retry; 110 short nblk; 111 int sz; 112 u_long skip; 113 struct buf *bp; 114 int p_offset; 115 short count; 116 }; 117 118 static struct scd_data { 119 int iobase; 120 char double_speed; 121 char *name; 122 short flags; 123 int blksize; 124 u_long disksize; 125 struct disklabel dlabel; 126 int openflag; 127 struct { 128 unsigned int adr :4; 129 unsigned int ctl :4; /* xcdplayer needs this */ 130 unsigned char start_msf[3]; 131 } toc[MAX_TRACKS]; 132 short first_track; 133 short last_track; 134 struct ioc_play_msf last_play; 135 136 short audio_status; 137 struct buf_queue_head head; /* head of buf queue */ 138 struct scd_mbx mbx; 139 #ifdef DEVFS 140 void *ra_devfs_token; 141 void *rc_devfs_token; 142 void *a_devfs_token; 143 void *c_devfs_token; 144 #endif 145 } scd_data[NSCD]; 146 147 /* prototypes */ 148 static void hsg2msf(int hsg, bcd_t *msf); 149 static int msf2hsg(bcd_t *msf); 150 151 static void process_attention(unsigned unit); 152 static __inline void write_control(unsigned port, unsigned data); 153 static int waitfor_status_bits(int unit, int bits_set, int bits_clear); 154 static int send_cmd(u_int unit, u_char cmd, u_int nargs, ...); 155 static void init_drive(unsigned unit); 156 static int spin_up(unsigned unit); 157 static int read_toc(dev_t dev); 158 static int get_result(u_int unit, int result_len, u_char *result); 159 static void print_error(int unit, int errcode); 160 161 static void scd_start(int unit); 162 static timeout_t scd_timeout; 163 static void scd_doread(int state, struct scd_mbx *mbxin); 164 165 static int scd_eject(int unit); 166 static int scd_stop(int unit); 167 static int scd_pause(int unit); 168 static int scd_resume(int unit); 169 static int scd_playtracks(int unit, struct ioc_play_track *pt); 170 static int scd_playmsf(int unit, struct ioc_play_msf *msf); 171 static int scd_play(int unit, struct ioc_play_msf *msf); 172 static int scd_subchan(int unit, struct ioc_read_subchannel *sc); 173 static int read_subcode(int unit, struct sony_subchannel_position_data *sc); 174 175 /* for xcdplayer */ 176 static int scd_toc_header(int unit, struct ioc_toc_header *th); 177 static int scd_toc_entrys(int unit, struct ioc_read_toc_entry *te); 178 static int scd_toc_entry(int unit, struct ioc_read_toc_single_entry *te); 179 #define SCD_LASTPLUS1 170 /* don't ask, xcdplayer passes this in */ 180 181 static int scd_probe(struct isa_device *dev); 182 static int scd_attach(struct isa_device *dev); 183 struct isa_driver scddriver = { scd_probe, scd_attach, "scd" }; 184 185 /* For canceling our timeout */ 186 static struct callout_handle tohandle = CALLOUT_HANDLE_INITIALIZER(&tohanle); 187 188 static d_open_t scdopen; 189 static d_read_t scdread; 190 static d_close_t scdclose; 191 static d_ioctl_t scdioctl; 192 static d_strategy_t scdstrategy; 193 194 #define CDEV_MAJOR 45 195 #define BDEV_MAJOR 16 196 static struct cdevsw scd_cdevsw = { 197 scdopen, scdclose, scdread, nowrite, 198 scdioctl, nostop, nullreset, nodevtotty, 199 seltrue, nommap, scdstrategy, "scd", 200 NULL, -1, nodump, nopsize, 201 D_DISK, 0, -1 }; 202 203 204 static int 205 scd_attach(struct isa_device *dev) 206 { 207 int unit = dev->id_unit; 208 struct scd_data *cd = scd_data + unit; 209 210 cd->iobase = dev->id_iobase; /* Already set by probe, but ... */ 211 212 /* name filled in probe */ 213 printf("scd%d: <%s>\n", dev->id_unit, scd_data[dev->id_unit].name); 214 215 init_drive(dev->id_unit); 216 217 cd->flags = SCDINIT; 218 cd->audio_status = CD_AS_AUDIO_INVALID; 219 bufq_init(&cd->head); 220 221 #ifdef DEVFS 222 cd->ra_devfs_token = 223 devfs_add_devswf(&scd_cdevsw, dkmakeminor(unit, 0, 0), 224 DV_CHR, UID_ROOT, GID_OPERATOR, 0640, 225 "rscd%da", unit); 226 cd->rc_devfs_token = 227 devfs_add_devswf(&scd_cdevsw, dkmakeminor(unit, 0, RAW_PART), 228 DV_CHR, UID_ROOT, GID_OPERATOR, 0640, 229 "rscd%dc", unit); 230 cd->a_devfs_token = 231 devfs_add_devswf(&scd_cdevsw, dkmakeminor(unit, 0, 0), 232 DV_BLK, UID_ROOT, GID_OPERATOR, 0640, 233 "scd%da", unit); 234 cd->c_devfs_token = 235 devfs_add_devswf(&scd_cdevsw, dkmakeminor(unit, 0, RAW_PART), 236 DV_BLK, UID_ROOT, GID_OPERATOR, 0640, 237 "scd%dc", unit); 238 #endif 239 return 1; 240 } 241 242 static int 243 scdopen(dev_t dev, int flags, int fmt, struct proc *p) 244 { 245 int unit,part,phys; 246 int rc; 247 struct scd_data *cd; 248 249 unit = scd_unit(dev); 250 if (unit >= NSCD) 251 return ENXIO; 252 253 cd = scd_data + unit; 254 part = scd_part(dev); 255 phys = scd_phys(dev); 256 257 /* not initialized*/ 258 if (!(cd->flags & SCDINIT)) 259 return ENXIO; 260 261 /* invalidated in the meantime? mark all open part's invalid */ 262 if (cd->openflag) 263 return ENXIO; 264 265 XDEBUG(1,("scd%d: DEBUG: status = 0x%x\n", unit, inb(cd->iobase+IREG_STATUS))); 266 267 if ((rc = spin_up(unit)) != 0) { 268 print_error(unit, rc); 269 return EIO; 270 } 271 if (!(cd->flags & SCDTOC)) { 272 int loop_count = 3; 273 274 while (loop_count-- > 0 && (rc = read_toc(dev)) != 0) { 275 if (rc == ERR_NOT_SPINNING) { 276 rc = spin_up(unit); 277 if (rc) { 278 print_error(unit, rc);\ 279 return EIO; 280 } 281 continue; 282 } 283 printf("scd%d: TOC read error 0x%x\n", unit, rc); 284 return EIO; 285 } 286 } 287 288 cd->openflag = 1; 289 cd->flags |= SCDVALID; 290 291 return 0; 292 } 293 294 static int 295 scdclose(dev_t dev, int flags, int fmt, struct proc *p) 296 { 297 int unit,part,phys; 298 struct scd_data *cd; 299 300 unit = scd_unit(dev); 301 if (unit >= NSCD) 302 return ENXIO; 303 304 cd = scd_data + unit; 305 part = scd_part(dev); 306 phys = scd_phys(dev); 307 308 if (!(cd->flags & SCDINIT) || !cd->openflag) 309 return ENXIO; 310 311 if (cd->audio_status != CD_AS_PLAY_IN_PROGRESS) { 312 (void)send_cmd(unit, CMD_SPIN_DOWN, 0); 313 cd->flags &= ~SCDSPINNING; 314 } 315 316 317 /* close channel */ 318 cd->openflag = 0; 319 320 return 0; 321 } 322 323 static int 324 scdread(dev_t dev, struct uio *uio, int ioflag) 325 { 326 return (physio(scdstrategy, NULL, dev, 1, minphys, uio)); 327 } 328 329 static void 330 scdstrategy(struct buf *bp) 331 { 332 struct scd_data *cd; 333 int s; 334 int unit = scd_unit(bp->b_dev); 335 336 cd = scd_data + unit; 337 338 XDEBUG(2, ("scd%d: DEBUG: strategy: block=%ld, bcount=%ld\n", 339 unit, (long)bp->b_blkno, bp->b_bcount)); 340 341 if (unit >= NSCD || bp->b_blkno < 0 || (bp->b_bcount % SCDBLKSIZE)) { 342 printf("scd%d: strategy failure: blkno = %ld, bcount = %ld\n", 343 unit, (long)bp->b_blkno, bp->b_bcount); 344 bp->b_error = EINVAL; 345 bp->b_flags |= B_ERROR; 346 goto bad; 347 } 348 349 /* if device invalidated (e.g. media change, door open), error */ 350 if (!(cd->flags & SCDVALID)) { 351 printf("scd%d: media changed\n", unit); 352 bp->b_error = EIO; 353 goto bad; 354 } 355 356 /* read only */ 357 if (!(bp->b_flags & B_READ)) { 358 bp->b_error = EROFS; 359 goto bad; 360 } 361 362 /* no data to read */ 363 if (bp->b_bcount == 0) 364 goto done; 365 366 if (!(cd->flags & SCDTOC)) { 367 bp->b_error = EIO; 368 goto bad; 369 } 370 /* adjust transfer if necessary */ 371 if (bounds_check_with_label(bp,&cd->dlabel,1) <= 0) 372 goto done; 373 374 bp->b_pblkno = bp->b_blkno; 375 bp->b_resid = 0; 376 377 /* queue it */ 378 s = splbio(); 379 bufqdisksort(&cd->head, bp); 380 splx(s); 381 382 /* now check whether we can perform processing */ 383 scd_start(unit); 384 return; 385 386 bad: 387 bp->b_flags |= B_ERROR; 388 done: 389 bp->b_resid = bp->b_bcount; 390 biodone(bp); 391 return; 392 } 393 394 static void 395 scd_start(int unit) 396 { 397 struct scd_data *cd = scd_data + unit; 398 struct buf *bp; 399 struct partition *p; 400 register s = splbio(); 401 402 if (cd->flags & SCDMBXBSY) { 403 splx(s); 404 return; 405 } 406 407 bp = bufq_first(&cd->head); 408 if (bp != 0) { 409 /* block found to process, dequeue */ 410 bufq_remove(&cd->head, bp); 411 cd->flags |= SCDMBXBSY; 412 splx(s); 413 } else { 414 /* nothing to do */ 415 splx(s); 416 return; 417 } 418 419 p = cd->dlabel.d_partitions + scd_part(bp->b_dev); 420 421 cd->mbx.unit = unit; 422 cd->mbx.port = cd->iobase; 423 cd->mbx.retry = 3; 424 cd->mbx.bp = bp; 425 cd->mbx.p_offset = p->p_offset; 426 splx(s); 427 428 scd_doread(SCD_S_BEGIN,&(cd->mbx)); 429 return; 430 } 431 432 static int 433 scdioctl(dev_t dev, u_long cmd, caddr_t addr, int flags, struct proc *p) 434 { 435 struct scd_data *cd; 436 int unit,part; 437 438 unit = scd_unit(dev); 439 part = scd_part(dev); 440 cd = scd_data + unit; 441 442 XDEBUG(1, ("scd%d: ioctl: cmd=0x%lx\n", unit, cmd)); 443 444 if (!(cd->flags & SCDVALID)) 445 return EIO; 446 447 switch (cmd) { 448 case DIOCSBAD: 449 return EINVAL; 450 case DIOCGDINFO: 451 *(struct disklabel *)addr = cd->dlabel; 452 return 0; 453 case DIOCGPART: 454 ((struct partinfo *)addr)->disklab = &cd->dlabel; 455 ((struct partinfo *)addr)->part = 456 &cd->dlabel.d_partitions[0]; 457 return 0; 458 case CDIOCPLAYTRACKS: 459 return scd_playtracks(unit, (struct ioc_play_track *) addr); 460 case CDIOCPLAYBLOCKS: 461 return EINVAL; 462 case CDIOCPLAYMSF: 463 return scd_playmsf(unit, (struct ioc_play_msf *) addr); 464 case CDIOCREADSUBCHANNEL: 465 return scd_subchan(unit, (struct ioc_read_subchannel *) addr); 466 case CDIOREADTOCHEADER: 467 return scd_toc_header (unit, (struct ioc_toc_header *) addr); 468 case CDIOREADTOCENTRYS: 469 return scd_toc_entrys (unit, (struct ioc_read_toc_entry*) addr); 470 case CDIOREADTOCENTRY: 471 return scd_toc_entry (unit, (struct ioc_read_toc_single_entry*) addr); 472 case CDIOCSETPATCH: 473 case CDIOCGETVOL: 474 case CDIOCSETVOL: 475 case CDIOCSETMONO: 476 case CDIOCSETSTERIO: 477 case CDIOCSETMUTE: 478 case CDIOCSETLEFT: 479 case CDIOCSETRIGHT: 480 return EINVAL; 481 case CDIOCRESUME: 482 return scd_resume(unit); 483 case CDIOCPAUSE: 484 return scd_pause(unit); 485 case CDIOCSTART: 486 return EINVAL; 487 case CDIOCSTOP: 488 return scd_stop(unit); 489 case CDIOCEJECT: 490 return scd_eject(unit); 491 case CDIOCALLOW: 492 return 0; 493 case CDIOCSETDEBUG: 494 #ifdef SCD_DEBUG 495 scd_debuglevel++; 496 #endif 497 return 0; 498 case CDIOCCLRDEBUG: 499 #ifdef SCD_DEBUG 500 scd_debuglevel = 0; 501 502 #endif 503 return 0; 504 default: 505 printf("scd%d: unsupported ioctl (cmd=0x%lx)\n", unit, cmd); 506 return ENOTTY; 507 } 508 } 509 510 /*************************************************************** 511 * lower level of driver starts here 512 **************************************************************/ 513 514 static int 515 scd_playtracks(int unit, struct ioc_play_track *pt) 516 { 517 struct scd_data *cd = scd_data + unit; 518 struct ioc_play_msf msf; 519 int a = pt->start_track; 520 int z = pt->end_track; 521 int rc; 522 523 if (!(cd->flags & SCDTOC) && (rc = read_toc(unit)) != 0) { 524 if (rc == -ERR_NOT_SPINNING) { 525 if (spin_up(unit) != 0) 526 return EIO; 527 rc = read_toc(unit); 528 } 529 if (rc != 0) { 530 print_error(unit, rc); 531 return EIO; 532 } 533 } 534 535 XDEBUG(1, ("scd%d: playtracks from %d:%d to %d:%d\n", unit, 536 a, pt->start_index, z, pt->end_index)); 537 538 if ( a < cd->first_track 539 || a > cd->last_track 540 || a > z 541 || z > cd->last_track) 542 return EINVAL; 543 544 bcopy(cd->toc[a].start_msf, &msf.start_m, 3); 545 hsg2msf(msf2hsg(cd->toc[z+1].start_msf)-1, &msf.end_m); 546 547 return scd_play(unit, &msf); 548 } 549 550 /* The start/end msf is expected to be in bin format */ 551 static int 552 scd_playmsf(int unit, struct ioc_play_msf *msfin) 553 { 554 struct ioc_play_msf msf; 555 556 msf.start_m = bin2bcd(msfin->start_m); 557 msf.start_s = bin2bcd(msfin->start_s); 558 msf.start_f = bin2bcd(msfin->start_f); 559 msf.end_m = bin2bcd(msfin->end_m); 560 msf.end_s = bin2bcd(msfin->end_s); 561 msf.end_f = bin2bcd(msfin->end_f); 562 563 return scd_play(unit, &msf); 564 } 565 566 /* The start/end msf is expected to be in bcd format */ 567 static int 568 scd_play(int unit, struct ioc_play_msf *msf) 569 { 570 struct scd_data *cd = scd_data + unit; 571 int i, rc; 572 573 XDEBUG(1, ("scd%d: playing: %02x:%02x:%02x -> %02x:%02x:%02x\n", unit, 574 msf->start_m, msf->start_s, msf->start_f, 575 msf->end_m, msf->end_s, msf->end_f)); 576 577 for (i = 0; i < 2; i++) { 578 rc = send_cmd(unit, CMD_PLAY_AUDIO, 7, 579 0x03, 580 msf->start_m, msf->start_s, msf->start_f, 581 msf->end_m, msf->end_s, msf->end_f); 582 if (rc == -ERR_NOT_SPINNING) { 583 cd->flags &= ~SCDSPINNING; 584 if (spin_up(unit) != 0) 585 return EIO; 586 } else if (rc < 0) { 587 print_error(unit, rc); 588 return EIO; 589 } else { 590 break; 591 } 592 } 593 cd->audio_status = CD_AS_PLAY_IN_PROGRESS; 594 bcopy((char *)msf, (char *)&cd->last_play, sizeof(struct ioc_play_msf)); 595 return 0; 596 } 597 598 static int 599 scd_stop(int unit) 600 { 601 struct scd_data *cd = scd_data + unit; 602 603 (void)send_cmd(unit, CMD_STOP_AUDIO, 0); 604 cd->audio_status = CD_AS_PLAY_COMPLETED; 605 return 0; 606 } 607 608 static int 609 scd_pause(int unit) 610 { 611 struct scd_data *cd = scd_data + unit; 612 struct sony_subchannel_position_data subpos; 613 614 if (cd->audio_status != CD_AS_PLAY_IN_PROGRESS) 615 return EINVAL; 616 617 if (read_subcode(unit, &subpos) != 0) 618 return EIO; 619 620 if (send_cmd(unit, CMD_STOP_AUDIO, 0) != 0) 621 return EIO; 622 623 cd->last_play.start_m = subpos.abs_msf[0]; 624 cd->last_play.start_s = subpos.abs_msf[1]; 625 cd->last_play.start_f = subpos.abs_msf[2]; 626 cd->audio_status = CD_AS_PLAY_PAUSED; 627 628 XDEBUG(1, ("scd%d: pause @ %02x:%02x:%02x\n", unit, 629 cd->last_play.start_m, 630 cd->last_play.start_s, 631 cd->last_play.start_f)); 632 633 return 0; 634 } 635 636 static int 637 scd_resume(int unit) 638 { 639 if (scd_data[unit].audio_status != CD_AS_PLAY_PAUSED) 640 return EINVAL; 641 return scd_play(unit, &scd_data[unit].last_play); 642 } 643 644 static int 645 scd_eject(int unit) 646 { 647 struct scd_data *cd = scd_data + unit; 648 649 cd->audio_status = CD_AS_AUDIO_INVALID; 650 cd->flags &= ~(SCDSPINNING|SCDTOC); 651 652 if (send_cmd(unit, CMD_STOP_AUDIO, 0) != 0 || 653 send_cmd(unit, CMD_SPIN_DOWN, 0) != 0 || 654 send_cmd(unit, CMD_EJECT, 0) != 0) 655 { 656 return EIO; 657 } 658 return 0; 659 } 660 661 static int 662 scd_subchan(int unit, struct ioc_read_subchannel *sc) 663 { 664 struct scd_data *cd = scd_data + unit; 665 struct sony_subchannel_position_data q; 666 struct cd_sub_channel_info data; 667 668 XDEBUG(1, ("scd%d: subchan af=%d, df=%d\n", unit, 669 sc->address_format, 670 sc->data_format)); 671 672 if (sc->address_format != CD_MSF_FORMAT) 673 return EINVAL; 674 675 if (sc->data_format != CD_CURRENT_POSITION) 676 return EINVAL; 677 678 if (read_subcode(unit, &q) != 0) 679 return EIO; 680 681 data.header.audio_status = cd->audio_status; 682 data.what.position.data_format = CD_MSF_FORMAT; 683 data.what.position.track_number = bcd2bin(q.track_number); 684 data.what.position.reladdr.msf.unused = 0; 685 data.what.position.reladdr.msf.minute = bcd2bin(q.rel_msf[0]); 686 data.what.position.reladdr.msf.second = bcd2bin(q.rel_msf[1]); 687 data.what.position.reladdr.msf.frame = bcd2bin(q.rel_msf[2]); 688 data.what.position.absaddr.msf.unused = 0; 689 data.what.position.absaddr.msf.minute = bcd2bin(q.abs_msf[0]); 690 data.what.position.absaddr.msf.second = bcd2bin(q.abs_msf[1]); 691 data.what.position.absaddr.msf.frame = bcd2bin(q.abs_msf[2]); 692 693 if (copyout(&data, sc->data, min(sizeof(struct cd_sub_channel_info), sc->data_len))!=0) 694 return EFAULT; 695 return 0; 696 } 697 698 static __inline void 699 write_control(unsigned port, unsigned data) 700 { 701 outb(port + OREG_CONTROL, data); 702 } 703 704 static int 705 scd_probe(struct isa_device *dev) 706 { 707 struct sony_drive_configuration drive_config; 708 int unit = dev->id_unit; 709 int rc; 710 static char namebuf[8+16+8+3]; 711 char *s = namebuf; 712 int loop_count = 0; 713 714 scd_data[unit].flags = SCDPROBING; 715 scd_data[unit].iobase = dev->id_iobase; 716 717 bzero(&drive_config, sizeof(drive_config)); 718 719 again: 720 /* Reset drive */ 721 write_control(dev->id_iobase, CBIT_RESET_DRIVE); 722 723 /* Calm down */ 724 DELAY(300000); 725 726 /* Only the ATTENTION bit may be set */ 727 if ((inb(dev->id_iobase+IREG_STATUS) & ~1) != 0) { 728 XDEBUG(1, ("scd: too many bits set. probe failed.\n")); 729 return 0; 730 } 731 rc = send_cmd(unit, CMD_GET_DRIVE_CONFIG, 0); 732 if (rc != sizeof(drive_config)) { 733 /* Sometimes if the drive is playing audio I get */ 734 /* the bad result 82. Fix by repeating the reset */ 735 if (rc > 0 && loop_count++ == 0) 736 goto again; 737 return 0; 738 } 739 if (get_result(unit, rc, (u_char *)&drive_config) != 0) 740 return 0; 741 742 bcopy(drive_config.vendor, namebuf, 8); 743 s = namebuf+8; 744 while (*(s-1) == ' ') /* Strip trailing spaces */ 745 s--; 746 *s++ = ' '; 747 bcopy(drive_config.product, s, 16); 748 s += 16; 749 while (*(s-1) == ' ') 750 s--; 751 *s++ = ' '; 752 bcopy(drive_config.revision, s, 8); 753 s += 8; 754 while (*(s-1) == ' ') 755 s--; 756 *s = 0; 757 758 scd_data[unit].name = namebuf; 759 760 if (drive_config.config & 0x10) 761 scd_data[unit].double_speed = 1; 762 else 763 scd_data[unit].double_speed = 0; 764 765 return 4; 766 } 767 768 static int 769 read_subcode(int unit, struct sony_subchannel_position_data *sc) 770 { 771 int rc; 772 773 rc = send_cmd(unit, CMD_GET_SUBCHANNEL_DATA, 0); 774 if (rc < 0 || rc < sizeof(*sc)) 775 return EIO; 776 if (get_result(unit, rc, (u_char *)sc) != 0) 777 return EIO; 778 return 0; 779 } 780 781 /* State machine copied from mcd.c */ 782 783 /* This (and the code in mcd.c) will not work with more than one drive */ 784 /* because there is only one mbxsave below. Should fix that some day. */ 785 /* (mbxsave & state should probably be included in the scd_data struct and */ 786 /* the unit number used as first argument to scd_doread().) /Micke */ 787 788 /* state machine to process read requests 789 * initialize with SCD_S_BEGIN: reset state machine 790 * SCD_S_WAITSTAT: wait for ready (!busy) 791 * SCD_S_WAITSPIN: wait for drive to spin up (if not spinning) 792 * SCD_S_WAITFIFO: wait for param fifo to get ready, them exec. command. 793 * SCD_S_WAITREAD: wait for data ready, read data 794 * SCD_S_WAITPARAM: wait for command result params, read them, error if bad data read. 795 */ 796 797 static struct scd_mbx *mbxsave; 798 799 static void 800 scd_timeout(void *arg) 801 { 802 scd_doread((int)arg, mbxsave); 803 } 804 805 static void 806 scd_doread(int state, struct scd_mbx *mbxin) 807 { 808 struct scd_mbx *mbx = (state!=SCD_S_BEGIN) ? mbxsave : mbxin; 809 int unit = mbx->unit; 810 int port = mbx->port; 811 struct buf *bp = mbx->bp; 812 struct scd_data *cd = scd_data + unit; 813 int reg,i; 814 int blknum; 815 caddr_t addr; 816 static char sdata[3]; /* Must be preserved between calls to this function */ 817 818 loop: 819 switch (state) { 820 case SCD_S_BEGIN: 821 mbx = mbxsave = mbxin; 822 823 case SCD_S_BEGIN1: 824 /* get status */ 825 mbx->count = RDELAY_WAIT; 826 827 process_attention(unit); 828 goto trystat; 829 830 case SCD_S_WAITSTAT: 831 untimeout(scd_timeout,(caddr_t)SCD_S_WAITSTAT, tohandle); 832 if (mbx->count-- <= 0) { 833 printf("scd%d: timeout. drive busy.\n",unit); 834 goto harderr; 835 } 836 837 trystat: 838 if (IS_BUSY(port)) { 839 tohandle = timeout(scd_timeout, 840 (caddr_t)SCD_S_WAITSTAT,hz/100); /* XXX */ 841 return; 842 } 843 844 process_attention(unit); 845 846 /* reject, if audio active */ 847 if (cd->audio_status & CD_AS_PLAY_IN_PROGRESS) { 848 printf("scd%d: audio is active\n",unit); 849 goto harderr; 850 } 851 852 mbx->sz = cd->blksize; 853 854 /* for first block */ 855 mbx->nblk = (bp->b_bcount + (mbx->sz-1)) / mbx->sz; 856 mbx->skip = 0; 857 858 nextblock: 859 if (!(cd->flags & SCDVALID)) 860 goto changed; 861 862 blknum = (bp->b_blkno / (mbx->sz/DEV_BSIZE)) 863 + mbx->p_offset + mbx->skip/mbx->sz; 864 865 XDEBUG(2, ("scd%d: scd_doread: read blknum=%d\n", unit, blknum)); 866 867 /* build parameter block */ 868 hsg2msf(blknum, sdata); 869 870 write_control(port, CBIT_RESULT_READY_CLEAR); 871 write_control(port, CBIT_RPARAM_CLEAR); 872 write_control(port, CBIT_DATA_READY_CLEAR); 873 874 if (FSTATUS_BIT(port, FBIT_WPARAM_READY)) 875 goto writeparam; 876 877 mbx->count = 100; 878 tohandle = timeout(scd_timeout, 879 (caddr_t)SCD_S_WAITFIFO,hz/100); /* XXX */ 880 return; 881 882 case SCD_S_WAITSPIN: 883 untimeout(scd_timeout,(caddr_t)SCD_S_WAITSPIN, tohandle); 884 if (mbx->count-- <= 0) { 885 printf("scd%d: timeout waiting for drive to spin up.\n", unit); 886 goto harderr; 887 } 888 if (!STATUS_BIT(port, SBIT_RESULT_READY)) { 889 tohandle = timeout(scd_timeout, 890 (caddr_t)SCD_S_WAITSPIN,hz/100); /* XXX */ 891 return; 892 } 893 write_control(port, CBIT_RESULT_READY_CLEAR); 894 switch ((i = inb(port+IREG_RESULT)) & 0xf0) { 895 case 0x20: 896 i = inb(port+IREG_RESULT); 897 print_error(unit, i); 898 goto harderr; 899 case 0x00: 900 (void)inb(port+IREG_RESULT); 901 cd->flags |= SCDSPINNING; 902 break; 903 } 904 XDEBUG(1, ("scd%d: DEBUG: spin up complete\n", unit)); 905 906 state = SCD_S_BEGIN1; 907 goto loop; 908 909 case SCD_S_WAITFIFO: 910 untimeout(scd_timeout,(caddr_t)SCD_S_WAITFIFO, tohandle); 911 if (mbx->count-- <= 0) { 912 printf("scd%d: timeout. write param not ready.\n",unit); 913 goto harderr; 914 } 915 if (!FSTATUS_BIT(port, FBIT_WPARAM_READY)) { 916 tohandle = timeout(scd_timeout, 917 (caddr_t)SCD_S_WAITFIFO,hz/100); /* XXX */ 918 return; 919 } 920 XDEBUG(1, ("scd%d: mbx->count (writeparamwait) = %d(%d)\n", unit, mbx->count, 100)); 921 922 writeparam: 923 /* The reason this test isn't done 'till now is to make sure */ 924 /* that it is ok to send the SPIN_UP cmd below. */ 925 if (!(cd->flags & SCDSPINNING)) { 926 XDEBUG(1, ("scd%d: spinning up drive ...\n", unit)); 927 outb(port+OREG_COMMAND, CMD_SPIN_UP); 928 mbx->count = 300; 929 tohandle = timeout(scd_timeout, 930 (caddr_t)SCD_S_WAITSPIN,hz/100); /* XXX */ 931 return; 932 } 933 934 reg = port + OREG_WPARAMS; 935 /* send the read command */ 936 disable_intr(); 937 outb(reg, sdata[0]); 938 outb(reg, sdata[1]); 939 outb(reg, sdata[2]); 940 outb(reg, 0); 941 outb(reg, 0); 942 outb(reg, 1); 943 outb(port+OREG_COMMAND, CMD_READ); 944 enable_intr(); 945 946 mbx->count = RDELAY_WAITREAD; 947 for (i = 0; i < 50; i++) { 948 if (STATUS_BIT(port, SBIT_DATA_READY)) 949 goto got_data; 950 DELAY(100); 951 } 952 953 tohandle = timeout(scd_timeout, 954 (caddr_t)SCD_S_WAITREAD,hz/100); /* XXX */ 955 return; 956 957 case SCD_S_WAITREAD: 958 untimeout(scd_timeout,(caddr_t)SCD_S_WAITREAD, tohandle); 959 if (mbx->count-- <= 0) { 960 if (STATUS_BIT(port, SBIT_RESULT_READY)) 961 goto got_param; 962 printf("scd%d: timeout while reading data\n",unit); 963 goto readerr; 964 } 965 if (!STATUS_BIT(port, SBIT_DATA_READY)) { 966 process_attention(unit); 967 if (!(cd->flags & SCDVALID)) 968 goto changed; 969 tohandle = timeout(scd_timeout, 970 (caddr_t)SCD_S_WAITREAD,hz/100); /* XXX */ 971 return; 972 } 973 XDEBUG(2, ("scd%d: mbx->count (after RDY_BIT) = %d(%d)\n", unit, mbx->count, RDELAY_WAITREAD)); 974 975 got_data: 976 /* data is ready */ 977 addr = bp->b_data + mbx->skip; 978 write_control(port, CBIT_DATA_READY_CLEAR); 979 insb(port+IREG_DATA, addr, mbx->sz); 980 981 mbx->count = 100; 982 for (i = 0; i < 20; i++) { 983 if (STATUS_BIT(port, SBIT_RESULT_READY)) 984 goto waitfor_param; 985 DELAY(100); 986 } 987 goto waitfor_param; 988 989 case SCD_S_WAITPARAM: 990 untimeout(scd_timeout,(caddr_t)SCD_S_WAITPARAM, tohandle); 991 if (mbx->count-- <= 0) { 992 printf("scd%d: timeout waiting for params\n",unit); 993 goto readerr; 994 } 995 996 waitfor_param: 997 if (!STATUS_BIT(port, SBIT_RESULT_READY)) { 998 tohandle = timeout(scd_timeout, 999 (caddr_t)SCD_S_WAITPARAM,hz/100); /* XXX */ 1000 return; 1001 } 1002 #if SCD_DEBUG 1003 if (mbx->count < 100 && scd_debuglevel > 0) 1004 printf("scd%d: mbx->count (paramwait) = %d(%d)\n", unit, mbx->count, 100); 1005 #endif 1006 1007 got_param: 1008 write_control(port, CBIT_RESULT_READY_CLEAR); 1009 switch ((i = inb(port+IREG_RESULT)) & 0xf0) { 1010 case 0x50: 1011 switch (i) { 1012 case ERR_FATAL_READ_ERROR1: 1013 case ERR_FATAL_READ_ERROR2: 1014 printf("scd%d: unrecoverable read error 0x%x\n", unit, i); 1015 goto harderr; 1016 } 1017 break; 1018 case 0x20: 1019 i = inb(port+IREG_RESULT); 1020 switch (i) { 1021 case ERR_NOT_SPINNING: 1022 XDEBUG(1, ("scd%d: read error: drive not spinning\n", unit)); 1023 if (mbx->retry-- > 0) { 1024 state = SCD_S_BEGIN1; 1025 cd->flags &= ~SCDSPINNING; 1026 goto loop; 1027 } 1028 goto harderr; 1029 default: 1030 print_error(unit, i); 1031 goto readerr; 1032 } 1033 case 0x00: 1034 i = inb(port+IREG_RESULT); 1035 break; 1036 } 1037 1038 if (--mbx->nblk > 0) { 1039 mbx->skip += mbx->sz; 1040 goto nextblock; 1041 } 1042 1043 /* return buffer */ 1044 bp->b_resid = 0; 1045 biodone(bp); 1046 1047 cd->flags &= ~SCDMBXBSY; 1048 scd_start(mbx->unit); 1049 return; 1050 } 1051 1052 readerr: 1053 if (mbx->retry-- > 0) { 1054 printf("scd%d: retrying ...\n",unit); 1055 state = SCD_S_BEGIN1; 1056 goto loop; 1057 } 1058 harderr: 1059 /* invalidate the buffer */ 1060 bp->b_error = EIO; 1061 bp->b_flags |= B_ERROR; 1062 bp->b_resid = bp->b_bcount; 1063 biodone(bp); 1064 1065 cd->flags &= ~SCDMBXBSY; 1066 scd_start(mbx->unit); 1067 return; 1068 1069 changed: 1070 printf("scd%d: media changed\n", unit); 1071 goto harderr; 1072 } 1073 1074 static void 1075 hsg2msf(int hsg, bcd_t *msf) 1076 { 1077 hsg += 150; 1078 M_msf(msf) = bin2bcd(hsg / 4500); 1079 hsg %= 4500; 1080 S_msf(msf) = bin2bcd(hsg / 75); 1081 F_msf(msf) = bin2bcd(hsg % 75); 1082 } 1083 1084 static int 1085 msf2hsg(bcd_t *msf) 1086 { 1087 return (bcd2bin(M_msf(msf)) * 60 + 1088 bcd2bin(S_msf(msf))) * 75 + 1089 bcd2bin(F_msf(msf)) - 150; 1090 } 1091 1092 static void 1093 process_attention(unsigned unit) 1094 { 1095 unsigned port = scd_data[unit].iobase; 1096 unsigned char code; 1097 int count = 0; 1098 1099 while (IS_ATTENTION(port) && count++ < 30) { 1100 write_control(port, CBIT_ATTENTION_CLEAR); 1101 code = inb(port+IREG_RESULT); 1102 1103 #if SCD_DEBUG 1104 if (scd_debuglevel > 0) { 1105 if (count == 1) 1106 printf("scd%d: DEBUG: ATTENTIONS = 0x%x", unit, code); 1107 else 1108 printf(",0x%x", code); 1109 } 1110 #endif 1111 1112 switch (code) { 1113 case ATTEN_SPIN_DOWN: 1114 scd_data[unit].flags &= ~SCDSPINNING; 1115 break; 1116 1117 case ATTEN_SPIN_UP_DONE: 1118 scd_data[unit].flags |= SCDSPINNING; 1119 break; 1120 1121 case ATTEN_AUDIO_DONE: 1122 scd_data[unit].audio_status = CD_AS_PLAY_COMPLETED; 1123 break; 1124 1125 case ATTEN_DRIVE_LOADED: 1126 scd_data[unit].flags &= ~(SCDTOC|SCDSPINNING|SCDVALID); 1127 scd_data[unit].audio_status = CD_AS_AUDIO_INVALID; 1128 break; 1129 1130 case ATTEN_EJECT_PUSHED: 1131 scd_data[unit].flags &= ~SCDVALID; 1132 break; 1133 } 1134 DELAY(100); 1135 } 1136 #if SCD_DEBUG 1137 if (scd_debuglevel > 0 && count > 0) 1138 printf("\n"); 1139 #endif 1140 } 1141 1142 /* Returns 0 OR sony error code */ 1143 static int 1144 spin_up(unsigned unit) 1145 { 1146 unsigned char res_reg[12]; 1147 unsigned int res_size; 1148 int rc; 1149 int loop_count = 0; 1150 1151 again: 1152 rc = send_cmd(unit, CMD_SPIN_UP, 0, 0, res_reg, &res_size); 1153 if (rc != 0) { 1154 XDEBUG(2, ("scd%d: CMD_SPIN_UP error 0x%x\n", unit, rc)); 1155 return rc; 1156 } 1157 1158 if (!(scd_data[unit].flags & SCDTOC)) { 1159 rc = send_cmd(unit, CMD_READ_TOC, 0); 1160 if (rc == ERR_NOT_SPINNING) { 1161 if (loop_count++ < 3) 1162 goto again; 1163 return rc; 1164 } 1165 if (rc != 0) 1166 return rc; 1167 } 1168 1169 scd_data[unit].flags |= SCDSPINNING; 1170 1171 return 0; 1172 } 1173 1174 static struct sony_tracklist * 1175 get_tl(struct sony_toc *toc, int size) 1176 { 1177 struct sony_tracklist *tl = &toc->tracks[0]; 1178 1179 if (tl->track != 0xb0) 1180 return tl; 1181 (char *)tl += 9; 1182 if (tl->track != 0xb1) 1183 return tl; 1184 (char *)tl += 9; 1185 if (tl->track != 0xb2) 1186 return tl; 1187 (char *)tl += 9; 1188 if (tl->track != 0xb3) 1189 return tl; 1190 (char *)tl += 9; 1191 if (tl->track != 0xb4) 1192 return tl; 1193 (char *)tl += 9; 1194 if (tl->track != 0xc0) 1195 return tl; 1196 (char *)tl += 9; 1197 return tl; 1198 } 1199 1200 static int 1201 read_toc(dev_t dev) 1202 { 1203 unsigned unit; 1204 struct scd_data *cd; 1205 unsigned part = 0; /* For now ... */ 1206 struct sony_toc toc; 1207 struct sony_tracklist *tl; 1208 int rc, i, j; 1209 u_long first, last; 1210 1211 unit = scd_unit(dev); 1212 cd = scd_data + unit; 1213 1214 rc = send_cmd(unit, CMD_GET_TOC, 1, part+1); 1215 if (rc < 0) 1216 return rc; 1217 if (rc > sizeof(toc)) { 1218 printf("scd%d: program error: toc too large (%d)\n", unit, rc); 1219 return EIO; 1220 } 1221 if (get_result(unit, rc, (u_char *)&toc) != 0) 1222 return EIO; 1223 1224 XDEBUG(1, ("scd%d: toc read. len = %d, sizeof(toc) = %d\n", unit, rc, sizeof(toc))); 1225 1226 tl = get_tl(&toc, rc); 1227 first = msf2hsg(tl->start_msf); 1228 last = msf2hsg(toc.lead_out_start_msf); 1229 cd->blksize = SCDBLKSIZE; 1230 cd->disksize = last*cd->blksize/DEV_BSIZE; 1231 1232 XDEBUG(1, ("scd%d: firstsector = %ld, lastsector = %ld", unit, 1233 first, last)); 1234 1235 cd->first_track = bcd2bin(toc.first_track); 1236 cd->last_track = bcd2bin(toc.last_track); 1237 if (cd->last_track > (MAX_TRACKS-2)) 1238 cd->last_track = MAX_TRACKS-2; 1239 for (j = 0, i = cd->first_track; i <= cd->last_track; i++, j++) { 1240 cd->toc[i].adr = tl[j].adr; 1241 cd->toc[i].ctl = tl[j].ctl; /* for xcdplayer */ 1242 bcopy(tl[j].start_msf, cd->toc[i].start_msf, 3); 1243 #ifdef SCD_DEBUG 1244 if (scd_debuglevel > 0) { 1245 if ((j % 3) == 0) 1246 printf("\nscd%d: tracks ", unit); 1247 printf("[%03d: %2d %2d %2d] ", i, 1248 bcd2bin(cd->toc[i].start_msf[0]), 1249 bcd2bin(cd->toc[i].start_msf[1]), 1250 bcd2bin(cd->toc[i].start_msf[2])); 1251 } 1252 #endif 1253 } 1254 bcopy(toc.lead_out_start_msf, cd->toc[cd->last_track+1].start_msf, 3); 1255 #ifdef SCD_DEBUG 1256 if (scd_debuglevel > 0) { 1257 i = cd->last_track+1; 1258 printf("[END: %2d %2d %2d]\n", 1259 bcd2bin(cd->toc[i].start_msf[0]), 1260 bcd2bin(cd->toc[i].start_msf[1]), 1261 bcd2bin(cd->toc[i].start_msf[2])); 1262 } 1263 #endif 1264 1265 bzero(&cd->dlabel,sizeof(struct disklabel)); 1266 /* filled with spaces first */ 1267 strncpy(cd->dlabel.d_typename," ", 1268 sizeof(cd->dlabel.d_typename)); 1269 strncpy(cd->dlabel.d_typename, cd->name, 1270 min(strlen(cd->name), sizeof(cd->dlabel.d_typename) - 1)); 1271 strncpy(cd->dlabel.d_packname,"unknown ", 1272 sizeof(cd->dlabel.d_packname)); 1273 cd->dlabel.d_secsize = cd->blksize; 1274 cd->dlabel.d_nsectors = 100; 1275 cd->dlabel.d_ntracks = 1; 1276 cd->dlabel.d_ncylinders = (cd->disksize/100)+1; 1277 cd->dlabel.d_secpercyl = 100; 1278 cd->dlabel.d_secperunit = cd->disksize; 1279 cd->dlabel.d_rpm = 300; 1280 cd->dlabel.d_interleave = 1; 1281 cd->dlabel.d_flags = D_REMOVABLE; 1282 cd->dlabel.d_npartitions= 1; 1283 cd->dlabel.d_partitions[0].p_offset = 0; 1284 cd->dlabel.d_partitions[0].p_size = cd->disksize; 1285 cd->dlabel.d_partitions[0].p_fstype = 9; 1286 cd->dlabel.d_magic = DISKMAGIC; 1287 cd->dlabel.d_magic2 = DISKMAGIC; 1288 cd->dlabel.d_checksum = dkcksum(&cd->dlabel); 1289 1290 cd->flags |= SCDTOC; 1291 1292 return 0; 1293 } 1294 1295 static void 1296 init_drive(unsigned unit) 1297 { 1298 int rc; 1299 1300 rc = send_cmd(unit, CMD_SET_DRIVE_PARAM, 2, 1301 0x05, 0x03 | ((scd_data[unit].double_speed) ? 0x04: 0)); 1302 if (rc != 0) 1303 printf("scd%d: Unable to set parameters. Errcode = 0x%x\n", unit, rc); 1304 } 1305 1306 /* Returns 0 or errno */ 1307 static int 1308 get_result(u_int unit, int result_len, u_char *result) 1309 { 1310 unsigned int port = scd_data[unit].iobase; 1311 unsigned int res_reg = port + IREG_RESULT; 1312 int loop_index = 2; /* send_cmd() reads two bytes ... */ 1313 1314 XDEBUG(1, ("scd%d: DEBUG: get_result: bytes=%d\n", unit, result_len)); 1315 1316 while (result_len-- > 0) { 1317 if (loop_index++ >= 10) { 1318 loop_index = 1; 1319 if (waitfor_status_bits(unit, SBIT_RESULT_READY, 0)) 1320 return EIO; 1321 write_control(port, CBIT_RESULT_READY_CLEAR); 1322 } 1323 if (result) 1324 *result++ = inb(res_reg); 1325 else 1326 (void)inb(res_reg); 1327 } 1328 return 0; 1329 } 1330 1331 /* Returns -0x100 for timeout, -(drive error code) OR number of result bytes */ 1332 static int 1333 send_cmd(u_int unit, u_char cmd, u_int nargs, ...) 1334 { 1335 va_list ap; 1336 u_int port = scd_data[unit].iobase; 1337 u_int reg; 1338 u_char c; 1339 int rc; 1340 int i; 1341 1342 if (waitfor_status_bits(unit, 0, SBIT_BUSY)) { 1343 printf("scd%d: drive busy\n", unit); 1344 return -0x100; 1345 } 1346 1347 XDEBUG(1,("scd%d: DEBUG: send_cmd: cmd=0x%x nargs=%d", unit, cmd, nargs)); 1348 1349 write_control(port, CBIT_RESULT_READY_CLEAR); 1350 write_control(port, CBIT_RPARAM_CLEAR); 1351 1352 for (i = 0; i < 100; i++) 1353 if (FSTATUS_BIT(port, FBIT_WPARAM_READY)) 1354 break; 1355 if (!FSTATUS_BIT(port, FBIT_WPARAM_READY)) { 1356 XDEBUG(1, ("\nscd%d: wparam timeout\n", unit)); 1357 return -EIO; 1358 } 1359 1360 va_start(ap, nargs); 1361 reg = port + OREG_WPARAMS; 1362 for (i = 0; i < nargs; i++) { 1363 c = (u_char)va_arg(ap, int); 1364 outb(reg, c); 1365 XDEBUG(1, (",{0x%x}", c)); 1366 } 1367 va_end(ap); 1368 XDEBUG(1, ("\n")); 1369 1370 outb(port+OREG_COMMAND, cmd); 1371 1372 rc = waitfor_status_bits(unit, SBIT_RESULT_READY, SBIT_BUSY); 1373 if (rc) 1374 return -0x100; 1375 1376 reg = port + IREG_RESULT; 1377 write_control(port, CBIT_RESULT_READY_CLEAR); 1378 switch ((rc = inb(reg)) & 0xf0) { 1379 case 0x20: 1380 rc = inb(reg); 1381 /* FALL TROUGH */ 1382 case 0x50: 1383 XDEBUG(1, ("scd%d: DEBUG: send_cmd: drive_error=0x%x\n", unit, rc)); 1384 return -rc; 1385 case 0x00: 1386 default: 1387 rc = inb(reg); 1388 XDEBUG(1, ("scd%d: DEBUG: send_cmd: result_len=%d\n", unit, rc)); 1389 return rc; 1390 } 1391 } 1392 1393 static void 1394 print_error(int unit, int errcode) 1395 { 1396 switch (errcode) { 1397 case -ERR_CD_NOT_LOADED: 1398 printf("scd%d: door is open\n", unit); 1399 break; 1400 case -ERR_NO_CD_INSIDE: 1401 printf("scd%d: no cd inside\n", unit); 1402 break; 1403 default: 1404 if (errcode == -0x100 || errcode > 0) 1405 printf("scd%d: device timeout\n", unit); 1406 else 1407 printf("scd%d: unexpected error 0x%x\n", unit, -errcode); 1408 break; 1409 } 1410 } 1411 1412 /* Returns 0 or errno value */ 1413 static int 1414 waitfor_status_bits(int unit, int bits_set, int bits_clear) 1415 { 1416 u_int port = scd_data[unit].iobase; 1417 u_int flags = scd_data[unit].flags; 1418 u_int reg = port + IREG_STATUS; 1419 u_int max_loop; 1420 u_char c = 0; 1421 1422 if (flags & SCDPROBING) { 1423 max_loop = 0; 1424 while (max_loop++ < 1000) { 1425 c = inb(reg); 1426 if (c == 0xff) 1427 return EIO; 1428 if (c & SBIT_ATTENTION) { 1429 process_attention(unit); 1430 continue; 1431 } 1432 if ((c & bits_set) == bits_set && 1433 (c & bits_clear) == 0) 1434 { 1435 break; 1436 } 1437 DELAY(10000); 1438 } 1439 } else { 1440 max_loop = 100; 1441 while (max_loop-- > 0) { 1442 c = inb(reg); 1443 if (c & SBIT_ATTENTION) { 1444 process_attention(unit); 1445 continue; 1446 } 1447 if ((c & bits_set) == bits_set && 1448 (c & bits_clear) == 0) 1449 { 1450 break; 1451 } 1452 tsleep(waitfor_status_bits, PZERO - 1, "waitfor", hz/10); 1453 } 1454 } 1455 if ((c & bits_set) == bits_set && 1456 (c & bits_clear) == 0) 1457 { 1458 return 0; 1459 } 1460 #ifdef SCD_DEBUG 1461 if (scd_debuglevel > 0) 1462 printf("scd%d: DEBUG: waitfor: TIMEOUT (0x%x,(0x%x,0x%x))\n", unit, c, bits_set, bits_clear); 1463 else 1464 #endif 1465 printf("scd%d: timeout.\n", unit); 1466 return EIO; 1467 } 1468 1469 /* these two routines for xcdplayer - "borrowed" from mcd.c */ 1470 static int 1471 scd_toc_header (int unit, struct ioc_toc_header* th) 1472 { 1473 struct scd_data *cd = scd_data + unit; 1474 int rc; 1475 1476 if (!(cd->flags & SCDTOC) && (rc = read_toc(unit)) != 0) { 1477 print_error(unit, rc); 1478 return EIO; 1479 } 1480 1481 th->starting_track = cd->first_track; 1482 th->ending_track = cd->last_track; 1483 th->len = 0; /* not used */ 1484 1485 return 0; 1486 } 1487 1488 static int 1489 scd_toc_entrys (int unit, struct ioc_read_toc_entry *te) 1490 { 1491 struct scd_data *cd = scd_data + unit; 1492 struct cd_toc_entry toc_entry; 1493 int rc, i, len = te->data_len; 1494 1495 if (!(cd->flags & SCDTOC) && (rc = read_toc(unit)) != 0) { 1496 print_error(unit, rc); 1497 return EIO; 1498 } 1499 1500 /* find the toc to copy*/ 1501 i = te->starting_track; 1502 if (i == SCD_LASTPLUS1) 1503 i = cd->last_track + 1; 1504 1505 /* verify starting track */ 1506 if (i < cd->first_track || i > cd->last_track+1) 1507 return EINVAL; 1508 1509 /* valid length ? */ 1510 if (len < sizeof(struct cd_toc_entry) 1511 || (len % sizeof(struct cd_toc_entry)) != 0) 1512 return EINVAL; 1513 1514 /* copy the toc data */ 1515 toc_entry.control = cd->toc[i].ctl; 1516 toc_entry.addr_type = te->address_format; 1517 toc_entry.track = i; 1518 if (te->address_format == CD_MSF_FORMAT) { 1519 toc_entry.addr.msf.unused = 0; 1520 toc_entry.addr.msf.minute = bcd2bin(cd->toc[i].start_msf[0]); 1521 toc_entry.addr.msf.second = bcd2bin(cd->toc[i].start_msf[1]); 1522 toc_entry.addr.msf.frame = bcd2bin(cd->toc[i].start_msf[2]); 1523 } 1524 1525 /* copy the data back */ 1526 if (copyout(&toc_entry, te->data, sizeof(struct cd_toc_entry)) != 0) 1527 return EFAULT; 1528 1529 return 0; 1530 } 1531 1532 1533 static int 1534 scd_toc_entry (int unit, struct ioc_read_toc_single_entry *te) 1535 { 1536 struct scd_data *cd = scd_data + unit; 1537 struct cd_toc_entry toc_entry; 1538 int rc, i; 1539 1540 if (!(cd->flags & SCDTOC) && (rc = read_toc(unit)) != 0) { 1541 print_error(unit, rc); 1542 return EIO; 1543 } 1544 1545 /* find the toc to copy*/ 1546 i = te->track; 1547 if (i == SCD_LASTPLUS1) 1548 i = cd->last_track + 1; 1549 1550 /* verify starting track */ 1551 if (i < cd->first_track || i > cd->last_track+1) 1552 return EINVAL; 1553 1554 /* copy the toc data */ 1555 toc_entry.control = cd->toc[i].ctl; 1556 toc_entry.addr_type = te->address_format; 1557 toc_entry.track = i; 1558 if (te->address_format == CD_MSF_FORMAT) { 1559 toc_entry.addr.msf.unused = 0; 1560 toc_entry.addr.msf.minute = bcd2bin(cd->toc[i].start_msf[0]); 1561 toc_entry.addr.msf.second = bcd2bin(cd->toc[i].start_msf[1]); 1562 toc_entry.addr.msf.frame = bcd2bin(cd->toc[i].start_msf[2]); 1563 } 1564 1565 /* copy the data back */ 1566 bcopy(&toc_entry, &te->entry, sizeof(struct cd_toc_entry)); 1567 1568 return 0; 1569 } 1570 1571 1572 static scd_devsw_installed = 0; 1573 1574 static void scd_drvinit(void *unused) 1575 { 1576 1577 if( ! scd_devsw_installed ) { 1578 cdevsw_add_generic(BDEV_MAJOR,CDEV_MAJOR, &scd_cdevsw); 1579 scd_devsw_installed = 1; 1580 } 1581 } 1582 1583 SYSINIT(scddev,SI_SUB_DRIVERS,SI_ORDER_MIDDLE+CDEV_MAJOR,scd_drvinit,NULL) 1584 1585 1586 #endif /* NSCD > 0 */
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