scd.c revision 12678
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/* $Id: scd.c,v 1.13 1995/12/08 11:15:01 julian Exp $ */ 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 <sys/types.h> 53#include <sys/param.h> 54#include <sys/systm.h> 55#include <sys/conf.h> 56#include <sys/file.h> 57#include <sys/buf.h> 58#include <sys/proc.h> 59#include <sys/stat.h> 60#include <sys/uio.h> 61#include <sys/ioctl.h> 62#include <sys/cdio.h> 63#include <sys/errno.h> 64#include <sys/dkbad.h> 65#include <sys/disklabel.h> 66#include <sys/devconf.h> 67#include <sys/kernel.h> 68#ifdef DEVFS 69#include <sys/devfsext.h> 70#endif /*DEVFS*/ 71 72#include <machine/clock.h> 73#include <machine/stdarg.h> 74 75#include <i386/isa/isa.h> 76#include <i386/isa/isa_device.h> 77#include <i386/isa/scdreg.h> 78 79 80#define scd_part(dev) ((minor(dev)) & 7) 81#define scd_unit(dev) (((minor(dev)) & 0x38) >> 3) 82#define scd_phys(dev) (((minor(dev)) & 0x40) >> 6) 83#define RAW_PART 2 84 85/* flags */ 86#define SCDOPEN 0x0001 /* device opened */ 87#define SCDVALID 0x0002 /* parameters loaded */ 88#define SCDINIT 0x0004 /* device is init'd */ 89#define SCDPROBING 0x0020 /* probing */ 90#define SCDTOC 0x0100 /* already read toc */ 91#define SCDMBXBSY 0x0200 /* local mbx is busy */ 92#define SCDSPINNING 0x0400 /* drive is spun up */ 93 94#define SCD_S_BEGIN 0 95#define SCD_S_BEGIN1 1 96#define SCD_S_WAITSTAT 2 97#define SCD_S_WAITFIFO 3 98#define SCD_S_WAITSPIN 4 99#define SCD_S_WAITREAD 5 100#define SCD_S_WAITPARAM 6 101 102#define RDELAY_WAIT 300 103#define RDELAY_WAITREAD 300 104 105#define SCDBLKSIZE 2048 106 107#ifdef SCD_DEBUG 108 static int scd_debuglevel = SCD_DEBUG; 109# define XDEBUG(level, data) {if (scd_debuglevel >= level) printf data;} 110#else 111# define XDEBUG(level, data) 112#endif 113 114struct scd_mbx { 115 short unit; 116 short port; 117 short retry; 118 short nblk; 119 int sz; 120 u_long skip; 121 struct buf *bp; 122 int p_offset; 123 short count; 124}; 125 126static struct scd_data { 127 int iobase; 128 char double_speed; 129 char *name; 130 short flags; 131 int blksize; 132 u_long disksize; 133 struct disklabel dlabel; 134 int openflag; 135 struct { 136 unsigned char adr :4; 137 unsigned char ctl :4; /* xcdplayer needs this */ 138 unsigned char start_msf[3]; 139 } toc[MAX_TRACKS]; 140 short first_track; 141 short last_track; 142 struct ioc_play_msf last_play; 143 144 short audio_status; 145 struct buf head; /* head of buf queue */ 146 struct scd_mbx mbx; 147#ifdef DEVFS 148 void *ra_devfs_token; 149 void *rc_devfs_token; 150 void *a_devfs_token; 151 void *c_devfs_token; 152#endif 153} scd_data[NSCD]; 154 155/* prototypes */ 156static int bcd2bin(bcd_t b); 157static bcd_t bin2bcd(int b); 158static void hsg2msf(int hsg, bcd_t *msf); 159static int msf2hsg(bcd_t *msf); 160 161static void process_attention(unsigned unit); 162static inline void write_control(unsigned port, unsigned data); 163static int waitfor_status_bits(int unit, int bits_set, int bits_clear); 164static int send_cmd(u_int unit, u_char cmd, u_int nargs, ...); 165static void init_drive(unsigned unit); 166static int spin_up(unsigned unit); 167static int read_toc(dev_t dev); 168static int get_result(u_int unit, int result_len, u_char *result); 169static void print_error(int unit, int errcode); 170 171static void scd_start(int unit); 172static void scd_doread(int state, struct scd_mbx *mbxin); 173 174static int scd_eject(int unit); 175static int scd_stop(int unit); 176static int scd_pause(int unit); 177static int scd_resume(int unit); 178static int scd_playtracks(int unit, struct ioc_play_track *pt); 179static int scd_playmsf(int unit, struct ioc_play_msf *msf); 180static int scd_play(int unit, struct ioc_play_msf *msf); 181static int scd_subchan(int unit, struct ioc_read_subchannel *sc); 182static int read_subcode(int unit, struct sony_subchannel_position_data *sc); 183 184/* for xcdplayer */ 185static int scd_toc_header(int unit, struct ioc_toc_header *th); 186static int scd_toc_entrys(int unit, struct ioc_read_toc_entry *te); 187#define SCD_LASTPLUS1 170 /* don't ask, xcdplayer passes this in */ 188 189static int scd_probe(struct isa_device *dev); 190static int scd_attach(struct isa_device *dev); 191struct isa_driver scddriver = { scd_probe, scd_attach, "scd" }; 192 193static d_open_t scdopen; 194static d_close_t scdclose; 195static d_ioctl_t scdioctl; 196static d_psize_t scdsize; 197static d_strategy_t scdstrategy; 198 199#define CDEV_MAJOR 45 200#define BDEV_MAJOR 16 201extern struct cdevsw scd_cdevsw; 202static struct bdevsw scd_bdevsw = 203 { scdopen, scdclose, scdstrategy, scdioctl, /*16*/ 204 nxdump, scdsize, 0, "scd", &scd_cdevsw, -1 }; 205 206static struct cdevsw scd_cdevsw = 207 { scdopen, scdclose, rawread, nowrite, /*45*/ 208 scdioctl, nostop, nullreset, nodevtotty,/* sony cd */ 209 seltrue, nommap, scdstrategy, "scd", 210 &scd_bdevsw, -1 }; 211 212 213static struct kern_devconf kdc_scd[NSCD] = { { 214 0, 0, 0, /* filled in by dev_attach */ 215 "scd", 0, { MDDT_ISA, 0, "bio" }, 216 isa_generic_externalize, 0, 0, ISA_EXTERNALLEN, 217 &kdc_isa0, /* parent */ 218 0, /* parentdata */ 219 DC_UNCONFIGURED, /* status */ 220 "Sony CD-ROM drive", /* properly filled later */ 221 DC_CLS_RDISK /* class */ 222} }; 223 224static inline void 225scd_registerdev(struct isa_device *id) 226{ 227 if(id->id_unit) 228 kdc_scd[id->id_unit] = kdc_scd[0]; 229 kdc_scd[id->id_unit].kdc_unit = id->id_unit; 230 kdc_scd[id->id_unit].kdc_isa = id; 231 dev_attach(&kdc_scd[id->id_unit]); 232} 233 234int scd_attach(struct isa_device *dev) 235{ 236 int unit = dev->id_unit; 237 struct scd_data *cd = scd_data + unit; 238 char name[32]; 239 240 cd->iobase = dev->id_iobase; /* Already set by probe, but ... */ 241 242 kdc_scd[dev->id_unit].kdc_state = DC_IDLE; 243 /* name filled in probe */ 244 kdc_scd[dev->id_unit].kdc_description = scd_data[dev->id_unit].name; 245 printf("scd%d: <%s>\n", dev->id_unit, scd_data[dev->id_unit].name); 246 247 init_drive(dev->id_unit); 248 249 cd->flags = SCDINIT; 250 cd->audio_status = CD_AS_AUDIO_INVALID; 251 252#ifdef DEVFS 253#define SCD_UID 0 254#define SCD_GID 13 255 sprintf(name, "rscd%da",unit); 256 cd->ra_devfs_token = devfs_add_devsw( 257 "/", name, &scd_cdevsw, (unit * 8 ) + 0, 258 DV_CHR, SCD_UID, SCD_GID, 0600); 259 260 sprintf(name, "rscd%dc",unit); 261 cd->rc_devfs_token = devfs_add_devsw( 262 "/", name, &scd_cdevsw, (unit * 8 ) + RAW_PART, 263 DV_CHR, SCD_UID, SCD_GID, 0600); 264 265 sprintf(name, "scd%da",unit); 266 cd->a_devfs_token = devfs_add_devsw( 267 "/", name, &scd_bdevsw, (unit * 8 ) + 0, 268 DV_BLK, SCD_UID, SCD_GID, 0600); 269 270 sprintf(name, "scd%dc",unit); 271 cd->c_devfs_token = devfs_add_devsw( 272 "/", name, &scd_bdevsw, (unit * 8 ) + RAW_PART, 273 DV_BLK, SCD_UID, SCD_GID, 0600); 274#endif 275 return 1; 276} 277 278static int 279scdopen(dev_t dev, int flags, int fmt, struct proc *p) 280{ 281 int unit,part,phys; 282 int rc; 283 struct scd_data *cd; 284 285 unit = scd_unit(dev); 286 if (unit >= NSCD) 287 return ENXIO; 288 289 cd = scd_data + unit; 290 part = scd_part(dev); 291 phys = scd_phys(dev); 292 293 /* not initialized*/ 294 if (!(cd->flags & SCDINIT)) 295 return ENXIO; 296 297 /* invalidated in the meantime? mark all open part's invalid */ 298 if (cd->openflag) 299 return ENXIO; 300 301 XDEBUG(1,("scd%d: DEBUG: status = 0x%x\n", unit, inb(cd->iobase+IREG_STATUS))); 302 303 if ((rc = spin_up(unit)) != 0) { 304 print_error(unit, rc); 305 return EIO; 306 } 307 if (!(cd->flags & SCDTOC)) { 308 int loop_count = 3; 309 310 while (loop_count-- > 0 && (rc = read_toc(dev)) != 0) { 311 if (rc == ERR_NOT_SPINNING) { 312 rc = spin_up(unit); 313 if (rc) { 314 print_error(unit, rc);\ 315 return EIO; 316 } 317 continue; 318 } 319 printf("scd%d: TOC read error 0x%x\n", unit, rc); 320 return EIO; 321 } 322 } 323 324 cd->openflag = 1; 325 cd->flags |= SCDVALID; 326 kdc_scd[unit].kdc_state = DC_BUSY; 327 328 return 0; 329} 330 331static int 332scdclose(dev_t dev, int flags, int fmt, struct proc *p) 333{ 334 int unit,part,phys; 335 struct scd_data *cd; 336 337 unit = scd_unit(dev); 338 if (unit >= NSCD) 339 return ENXIO; 340 341 cd = scd_data + unit; 342 part = scd_part(dev); 343 phys = scd_phys(dev); 344 345 if (!(cd->flags & SCDINIT) || !cd->openflag) 346 return ENXIO; 347 348 if (cd->audio_status != CD_AS_PLAY_IN_PROGRESS) { 349 (void)send_cmd(unit, CMD_SPIN_DOWN, 0); 350 cd->flags &= ~SCDSPINNING; 351 } 352 353 kdc_scd[unit].kdc_state = DC_IDLE; 354 355 /* close channel */ 356 cd->openflag = 0; 357 358 return 0; 359} 360 361static void 362scdstrategy(struct buf *bp) 363{ 364 struct scd_data *cd; 365 struct buf *qp; 366 int s; 367 int unit = scd_unit(bp->b_dev); 368 369 cd = scd_data + unit; 370 371 XDEBUG(2, ("scd%d: DEBUG: strategy: block=%ld, bcount=%ld\n", unit, bp->b_blkno, bp->b_bcount)); 372 373 if (unit >= NSCD || bp->b_blkno < 0 || (bp->b_bcount % SCDBLKSIZE)) { 374 printf("scd%d: strategy failure: blkno = %ld, bcount = %ld\n", 375 unit, bp->b_blkno, bp->b_bcount); 376 bp->b_error = EINVAL; 377 bp->b_flags |= B_ERROR; 378 goto bad; 379 } 380 381 /* if device invalidated (e.g. media change, door open), error */ 382 if (!(cd->flags & SCDVALID)) { 383 printf("scd%d: media changed\n", unit); 384 bp->b_error = EIO; 385 goto bad; 386 } 387 388 /* read only */ 389 if (!(bp->b_flags & B_READ)) { 390 bp->b_error = EROFS; 391 goto bad; 392 } 393 394 /* no data to read */ 395 if (bp->b_bcount == 0) 396 goto done; 397 398 if (!(cd->flags & SCDTOC)) { 399 bp->b_error = EIO; 400 goto bad; 401 } 402 /* adjust transfer if necessary */ 403 if (bounds_check_with_label(bp,&cd->dlabel,1) <= 0) 404 goto done; 405 406 bp->b_pblkno = bp->b_blkno; 407 bp->b_resid = 0; 408 409 /* queue it */ 410 qp = &cd->head; 411 s = splbio(); 412 disksort(qp,bp); 413 splx(s); 414 415 /* now check whether we can perform processing */ 416 scd_start(unit); 417 return; 418 419bad: 420 bp->b_flags |= B_ERROR; 421done: 422 bp->b_resid = bp->b_bcount; 423 biodone(bp); 424 return; 425} 426 427static void 428scd_start(int unit) 429{ 430 struct scd_data *cd = scd_data + unit; 431 struct buf *bp, *qp = &cd->head; 432 struct partition *p; 433 register s = splbio(); 434 435 if (cd->flags & SCDMBXBSY) { 436 splx(s); 437 return; 438 } 439 440 if ((bp = qp->b_actf) != 0) { 441 /* block found to process, dequeue */ 442 qp->b_actf = bp->b_actf; 443 cd->flags |= SCDMBXBSY; 444 splx(s); 445 } else { 446 /* nothing to do */ 447 splx(s); 448 return; 449 } 450 451 p = cd->dlabel.d_partitions + scd_part(bp->b_dev); 452 453 cd->mbx.unit = unit; 454 cd->mbx.port = cd->iobase; 455 cd->mbx.retry = 3; 456 cd->mbx.bp = bp; 457 cd->mbx.p_offset = p->p_offset; 458 splx(s); 459 460 scd_doread(SCD_S_BEGIN,&(cd->mbx)); 461 return; 462} 463 464static int 465scdioctl(dev_t dev, int cmd, caddr_t addr, int flags, struct proc *p) 466{ 467 struct scd_data *cd; 468 int unit,part; 469 470 unit = scd_unit(dev); 471 part = scd_part(dev); 472 cd = scd_data + unit; 473 474 XDEBUG(1, ("scd%d: ioctl: cmd=0x%x\n", unit, cmd)); 475 476 if (!(cd->flags & SCDVALID)) 477 return EIO; 478 479 switch (cmd) { 480 case DIOCSBAD: 481 return EINVAL; 482 case DIOCGDINFO: 483 *(struct disklabel *)addr = cd->dlabel; 484 return 0; 485 case DIOCGPART: 486 ((struct partinfo *)addr)->disklab = &cd->dlabel; 487 ((struct partinfo *)addr)->part = 488 &cd->dlabel.d_partitions[0]; 489 return 0; 490 case CDIOCPLAYTRACKS: 491 return scd_playtracks(unit, (struct ioc_play_track *) addr); 492 case CDIOCPLAYBLOCKS: 493 return EINVAL; 494 case CDIOCPLAYMSF: 495 return scd_playmsf(unit, (struct ioc_play_msf *) addr); 496 case CDIOCREADSUBCHANNEL: 497 return scd_subchan(unit, (struct ioc_read_subchannel *) addr); 498 case CDIOREADTOCHEADER: 499 return scd_toc_header (unit, (struct ioc_toc_header *) addr); 500 case CDIOREADTOCENTRYS: 501 return scd_toc_entrys (unit, (struct ioc_read_toc_entry*) addr); 502 case CDIOCSETPATCH: 503 case CDIOCGETVOL: 504 case CDIOCSETVOL: 505 case CDIOCSETMONO: 506 case CDIOCSETSTERIO: 507 case CDIOCSETMUTE: 508 case CDIOCSETLEFT: 509 case CDIOCSETRIGHT: 510 return EINVAL; 511 case CDIOCRESUME: 512 return scd_resume(unit); 513 case CDIOCPAUSE: 514 return scd_pause(unit); 515 case CDIOCSTART: 516 return EINVAL; 517 case CDIOCSTOP: 518 return scd_stop(unit); 519 case CDIOCEJECT: 520 return scd_eject(unit); 521 case CDIOCALLOW: 522 return 0; 523 case CDIOCSETDEBUG: 524#ifdef SCD_DEBUG 525 scd_debuglevel++; 526#endif 527 return 0; 528 case CDIOCCLRDEBUG: 529#ifdef SCD_DEBUG 530 scd_debuglevel = 0; 531 532#endif 533 return 0; 534 default: 535 printf("scd%d: unsupported ioctl (cmd=0x%x)\n", unit, cmd); 536 return ENOTTY; 537 } 538} 539 540static int 541scdsize(dev_t dev) 542{ 543 return -1; 544} 545 546/*************************************************************** 547 * lower level of driver starts here 548 **************************************************************/ 549 550static int 551scd_playtracks(int unit, struct ioc_play_track *pt) 552{ 553 struct scd_data *cd = scd_data + unit; 554 struct ioc_play_msf msf; 555 int a = pt->start_track; 556 int z = pt->end_track; 557 int rc; 558 559 if (!(cd->flags & SCDTOC) && (rc = read_toc(unit)) != 0) { 560 if (rc == -ERR_NOT_SPINNING) { 561 if (spin_up(unit) != 0) 562 return EIO; 563 rc = read_toc(unit); 564 } 565 if (rc != 0) { 566 print_error(unit, rc); 567 return EIO; 568 } 569 } 570 571 XDEBUG(1, ("scd%d: playtracks from %d:%d to %d:%d\n", unit, 572 a, pt->start_index, z, pt->end_index)); 573 574 if ( a < cd->first_track 575 || a > cd->last_track 576 || a > z 577 || z > cd->last_track) 578 return EINVAL; 579 580 bcopy(cd->toc[a].start_msf, &msf.start_m, 3); 581 hsg2msf(msf2hsg(cd->toc[z+1].start_msf)-1, &msf.end_m); 582 583 return scd_play(unit, &msf); 584} 585 586/* The start/end msf is expected to be in bin format */ 587static int 588scd_playmsf(int unit, struct ioc_play_msf *msfin) 589{ 590 struct ioc_play_msf msf; 591 592 msf.start_m = bin2bcd(msfin->start_m); 593 msf.start_s = bin2bcd(msfin->start_s); 594 msf.start_f = bin2bcd(msfin->start_f); 595 msf.end_m = bin2bcd(msfin->end_m); 596 msf.end_s = bin2bcd(msfin->end_s); 597 msf.end_f = bin2bcd(msfin->end_f); 598 599 return scd_play(unit, &msf); 600} 601 602/* The start/end msf is expected to be in bcd format */ 603static int 604scd_play(int unit, struct ioc_play_msf *msf) 605{ 606 struct scd_data *cd = scd_data + unit; 607 int i, rc; 608 609 XDEBUG(1, ("scd%d: playing: %02x:%02x:%02x -> %02x:%02x:%02x\n", unit, 610 msf->start_m, msf->start_s, msf->start_f, 611 msf->end_m, msf->end_s, msf->end_f)); 612 613 for (i = 0; i < 2; i++) { 614 rc = send_cmd(unit, CMD_PLAY_AUDIO, 7, 615 0x03, 616 msf->start_m, msf->start_s, msf->start_f, 617 msf->end_m, msf->end_s, msf->end_f); 618 if (rc == -ERR_NOT_SPINNING) { 619 cd->flags &= ~SCDSPINNING; 620 if (spin_up(unit) != 0) 621 return EIO; 622 } else if (rc < 0) { 623 print_error(unit, rc); 624 return EIO; 625 } else { 626 break; 627 } 628 } 629 cd->audio_status = CD_AS_PLAY_IN_PROGRESS; 630 bcopy((char *)msf, (char *)&cd->last_play, sizeof(struct ioc_play_msf)); 631 return 0; 632} 633 634static int 635scd_stop(int unit) 636{ 637 struct scd_data *cd = scd_data + unit; 638 639 (void)send_cmd(unit, CMD_STOP_AUDIO, 0); 640 cd->audio_status = CD_AS_PLAY_COMPLETED; 641 return 0; 642} 643 644static int 645scd_pause(int unit) 646{ 647 struct scd_data *cd = scd_data + unit; 648 struct sony_subchannel_position_data subpos; 649 650 if (cd->audio_status != CD_AS_PLAY_IN_PROGRESS) 651 return EINVAL; 652 653 if (read_subcode(unit, &subpos) != 0) 654 return EIO; 655 656 if (send_cmd(unit, CMD_STOP_AUDIO, 0) != 0) 657 return EIO; 658 659 cd->last_play.start_m = subpos.abs_msf[0]; 660 cd->last_play.start_s = subpos.abs_msf[1]; 661 cd->last_play.start_f = subpos.abs_msf[2]; 662 cd->audio_status = CD_AS_PLAY_PAUSED; 663 664 XDEBUG(1, ("scd%d: pause @ %02x:%02x:%02x\n", unit, 665 cd->last_play.start_m, 666 cd->last_play.start_s, 667 cd->last_play.start_f)); 668 669 return 0; 670} 671 672static int 673scd_resume(int unit) 674{ 675 if (scd_data[unit].audio_status != CD_AS_PLAY_PAUSED) 676 return EINVAL; 677 return scd_play(unit, &scd_data[unit].last_play); 678} 679 680static int 681scd_eject(int unit) 682{ 683 struct scd_data *cd = scd_data + unit; 684 685 cd->audio_status = CD_AS_AUDIO_INVALID; 686 cd->flags &= ~(SCDSPINNING|SCDTOC); 687 688 if (send_cmd(unit, CMD_STOP_AUDIO, 0) != 0 || 689 send_cmd(unit, CMD_SPIN_DOWN, 0) != 0 || 690 send_cmd(unit, CMD_EJECT, 0) != 0) 691 { 692 return EIO; 693 } 694 return 0; 695} 696 697static int 698scd_subchan(int unit, struct ioc_read_subchannel *sc) 699{ 700 struct scd_data *cd = scd_data + unit; 701 struct sony_subchannel_position_data q; 702 struct cd_sub_channel_info data; 703 704 XDEBUG(1, ("scd%d: subchan af=%d, df=%d\n", unit, 705 sc->address_format, 706 sc->data_format)); 707 708 if (sc->address_format != CD_MSF_FORMAT) 709 return EINVAL; 710 711 if (sc->data_format != CD_CURRENT_POSITION) 712 return EINVAL; 713 714 if (read_subcode(unit, &q) != 0) 715 return EIO; 716 717 data.header.audio_status = cd->audio_status; 718 data.what.position.data_format = CD_MSF_FORMAT; 719 data.what.position.track_number = bcd2bin(q.track_number); 720 data.what.position.reladdr.msf.unused = 0; 721 data.what.position.reladdr.msf.minute = bcd2bin(q.rel_msf[0]); 722 data.what.position.reladdr.msf.second = bcd2bin(q.rel_msf[1]); 723 data.what.position.reladdr.msf.frame = bcd2bin(q.rel_msf[2]); 724 data.what.position.absaddr.msf.unused = 0; 725 data.what.position.absaddr.msf.minute = bcd2bin(q.abs_msf[0]); 726 data.what.position.absaddr.msf.second = bcd2bin(q.abs_msf[1]); 727 data.what.position.absaddr.msf.frame = bcd2bin(q.abs_msf[2]); 728 729 if (copyout(&data, sc->data, min(sizeof(struct cd_sub_channel_info), sc->data_len))!=0) 730 return EFAULT; 731 return 0; 732} 733 734int 735scd_probe(struct isa_device *dev) 736{ 737 struct sony_drive_configuration drive_config; 738 int unit = dev->id_unit; 739 int rc; 740 static char namebuf[8+16+8+3]; 741 char *s = namebuf; 742 int loop_count = 0; 743 744 scd_data[unit].flags = SCDPROBING; 745 scd_data[unit].iobase = dev->id_iobase; 746 747 bzero(&drive_config, sizeof(drive_config)); 748 749 scd_registerdev(dev); 750 751again: 752 /* Reset drive */ 753 write_control(dev->id_iobase, CBIT_RESET_DRIVE); 754 755 /* Calm down */ 756 DELAY(300000); 757 758 /* Only the ATTENTION bit may be set */ 759 if ((inb(dev->id_iobase+IREG_STATUS) & ~1) != 0) { 760 XDEBUG(1, ("scd: too many bits set. probe failed.\n")); 761 return 0; 762 } 763 rc = send_cmd(unit, CMD_GET_DRIVE_CONFIG, 0); 764 if (rc != sizeof(drive_config)) { 765 /* Sometimes if the drive is playing audio I get */ 766 /* the bad result 82. Fix by repeating the reset */ 767 if (rc > 0 && loop_count++ == 0) 768 goto again; 769 return 0; 770 } 771 if (get_result(unit, rc, (u_char *)&drive_config) != 0) 772 return 0; 773 774 bcopy(drive_config.vendor, namebuf, 8); 775 s = namebuf+8; 776 while (*(s-1) == ' ') /* Strip trailing spaces */ 777 s--; 778 *s++ = ' '; 779 bcopy(drive_config.product, s, 16); 780 s += 16; 781 while (*(s-1) == ' ') 782 s--; 783 *s++ = ' '; 784 bcopy(drive_config.revision, s, 8); 785 s += 8; 786 while (*(s-1) == ' ') 787 s--; 788 *s = 0; 789 790 scd_data[unit].name = namebuf; 791 792 if (drive_config.config & 0x10) 793 scd_data[unit].double_speed = 1; 794 else 795 scd_data[unit].double_speed = 0; 796 797 return 4; 798} 799 800static int 801read_subcode(int unit, struct sony_subchannel_position_data *sc) 802{ 803 int rc; 804 805 rc = send_cmd(unit, CMD_GET_SUBCHANNEL_DATA, 0); 806 if (rc < 0 || rc < sizeof(*sc)) 807 return EIO; 808 if (get_result(unit, rc, (u_char *)sc) != 0) 809 return EIO; 810 return 0; 811} 812 813/* State machine copied from mcd.c */ 814 815/* This (and the code in mcd.c) will not work with more than one drive */ 816/* because there is only one mbxsave below. Should fix that some day. */ 817/* (mbxsave & state should probably be included in the scd_data struct and */ 818/* the unit number used as first argument to scd_doread().) /Micke */ 819 820/* state machine to process read requests 821 * initialize with SCD_S_BEGIN: reset state machine 822 * SCD_S_WAITSTAT: wait for ready (!busy) 823 * SCD_S_WAITSPIN: wait for drive to spin up (if not spinning) 824 * SCD_S_WAITFIFO: wait for param fifo to get ready, them exec. command. 825 * SCD_S_WAITREAD: wait for data ready, read data 826 * SCD_S_WAITPARAM: wait for command result params, read them, error if bad data read. 827 */ 828 829static struct scd_mbx *mbxsave; 830 831static void 832scd_doread(int state, struct scd_mbx *mbxin) 833{ 834 struct scd_mbx *mbx = (state!=SCD_S_BEGIN) ? mbxsave : mbxin; 835 int unit = mbx->unit; 836 int port = mbx->port; 837 struct buf *bp = mbx->bp; 838 struct scd_data *cd = scd_data + unit; 839 int reg,i; 840 int blknum; 841 caddr_t addr; 842 static char sdata[3]; /* Must be preserved between calls to this function */ 843 844loop: 845 switch (state) { 846 case SCD_S_BEGIN: 847 mbx = mbxsave = mbxin; 848 849 case SCD_S_BEGIN1: 850 /* get status */ 851 mbx->count = RDELAY_WAIT; 852 853 process_attention(unit); 854 goto trystat; 855 856 case SCD_S_WAITSTAT: 857 untimeout((timeout_func_t)scd_doread,(caddr_t)SCD_S_WAITSTAT); 858 if (mbx->count-- <= 0) { 859 printf("scd%d: timeout. drive busy.\n",unit); 860 goto harderr; 861 } 862 863trystat: 864 if (IS_BUSY(port)) { 865 timeout((timeout_func_t)scd_doread, 866 (caddr_t)SCD_S_WAITSTAT,hz/100); /* XXX */ 867 return; 868 } 869 870 process_attention(unit); 871 872 /* reject, if audio active */ 873 if (cd->audio_status & CD_AS_PLAY_IN_PROGRESS) { 874 printf("scd%d: audio is active\n",unit); 875 goto harderr; 876 } 877 878 mbx->sz = cd->blksize; 879 880 /* for first block */ 881 mbx->nblk = (bp->b_bcount + (mbx->sz-1)) / mbx->sz; 882 mbx->skip = 0; 883 884nextblock: 885 if (!(cd->flags & SCDVALID)) 886 goto changed; 887 888 blknum = (bp->b_blkno / (mbx->sz/DEV_BSIZE)) 889 + mbx->p_offset + mbx->skip/mbx->sz; 890 891 XDEBUG(2, ("scd%d: scd_doread: read blknum=%d\n", unit, blknum)); 892 893 /* build parameter block */ 894 hsg2msf(blknum, sdata); 895 896 write_control(port, CBIT_RESULT_READY_CLEAR); 897 write_control(port, CBIT_RPARAM_CLEAR); 898 write_control(port, CBIT_DATA_READY_CLEAR); 899 900 if (FSTATUS_BIT(port, FBIT_WPARAM_READY)) 901 goto writeparam; 902 903 mbx->count = 100; 904 timeout((timeout_func_t)scd_doread, 905 (caddr_t)SCD_S_WAITFIFO,hz/100); /* XXX */ 906 return; 907 908 case SCD_S_WAITSPIN: 909 untimeout((timeout_func_t)scd_doread,(caddr_t)SCD_S_WAITSPIN); 910 if (mbx->count-- <= 0) { 911 printf("scd%d: timeout waiting for drive to spin up.\n", unit); 912 goto harderr; 913 } 914 if (!STATUS_BIT(port, SBIT_RESULT_READY)) { 915 timeout((timeout_func_t)scd_doread, 916 (caddr_t)SCD_S_WAITSPIN,hz/100); /* XXX */ 917 return; 918 } 919 write_control(port, CBIT_RESULT_READY_CLEAR); 920 switch ((i = inb(port+IREG_RESULT)) & 0xf0) { 921 case 0x20: 922 i = inb(port+IREG_RESULT); 923 print_error(unit, i); 924 goto harderr; 925 case 0x00: 926 (void)inb(port+IREG_RESULT); 927 cd->flags |= SCDSPINNING; 928 break; 929 } 930 XDEBUG(1, ("scd%d: DEBUG: spin up complete\n", unit)); 931 932 state = SCD_S_BEGIN1; 933 goto loop; 934 935 case SCD_S_WAITFIFO: 936 untimeout((timeout_func_t)scd_doread,(caddr_t)SCD_S_WAITFIFO); 937 if (mbx->count-- <= 0) { 938 printf("scd%d: timeout. write param not ready.\n",unit); 939 goto harderr; 940 } 941 if (!FSTATUS_BIT(port, FBIT_WPARAM_READY)) { 942 timeout((timeout_func_t)scd_doread, 943 (caddr_t)SCD_S_WAITFIFO,hz/100); /* XXX */ 944 return; 945 } 946 XDEBUG(1, ("scd%d: mbx->count (writeparamwait) = %d(%d)\n", unit, mbx->count, 100)); 947 948writeparam: 949 /* The reason this test isn't done 'till now is to make sure */ 950 /* that it is ok to send the SPIN_UP cmd below. */ 951 if (!(cd->flags & SCDSPINNING)) { 952 XDEBUG(1, ("scd%d: spinning up drive ...\n", unit)); 953 outb(port+OREG_COMMAND, CMD_SPIN_UP); 954 mbx->count = 300; 955 timeout((timeout_func_t)scd_doread, 956 (caddr_t)SCD_S_WAITSPIN,hz/100); /* XXX */ 957 return; 958 } 959 960 reg = port + OREG_WPARAMS; 961 /* send the read command */ 962 disable_intr(); 963 outb(reg, sdata[0]); 964 outb(reg, sdata[1]); 965 outb(reg, sdata[2]); 966 outb(reg, 0); 967 outb(reg, 0); 968 outb(reg, 1); 969 outb(port+OREG_COMMAND, CMD_READ); 970 enable_intr(); 971 972 mbx->count = RDELAY_WAITREAD; 973 for (i = 0; i < 50; i++) { 974 if (STATUS_BIT(port, SBIT_DATA_READY)) 975 goto got_data; 976 DELAY(100); 977 } 978 979 timeout((timeout_func_t)scd_doread, 980 (caddr_t)SCD_S_WAITREAD,hz/100); /* XXX */ 981 return; 982 983 case SCD_S_WAITREAD: 984 untimeout((timeout_func_t)scd_doread,(caddr_t)SCD_S_WAITREAD); 985 if (mbx->count-- <= 0) { 986 if (STATUS_BIT(port, SBIT_RESULT_READY)) 987 goto got_param; 988 printf("scd%d: timeout while reading data\n",unit); 989 goto readerr; 990 } 991 if (!STATUS_BIT(port, SBIT_DATA_READY)) { 992 process_attention(unit); 993 if (!(cd->flags & SCDVALID)) 994 goto changed; 995 timeout((timeout_func_t)scd_doread, 996 (caddr_t)SCD_S_WAITREAD,hz/100); /* XXX */ 997 return; 998 } 999 XDEBUG(2, ("scd%d: mbx->count (after RDY_BIT) = %d(%d)\n", unit, mbx->count, RDELAY_WAITREAD)); 1000 1001got_data: 1002 /* data is ready */ 1003 addr = bp->b_un.b_addr + mbx->skip; 1004 write_control(port, CBIT_DATA_READY_CLEAR); 1005 insb(port+IREG_DATA, addr, mbx->sz); 1006 1007 mbx->count = 100; 1008 for (i = 0; i < 20; i++) { 1009 if (STATUS_BIT(port, SBIT_RESULT_READY)) 1010 goto waitfor_param; 1011 DELAY(100); 1012 } 1013 goto waitfor_param; 1014 1015 case SCD_S_WAITPARAM: 1016 untimeout((timeout_func_t)scd_doread,(caddr_t)SCD_S_WAITPARAM); 1017 if (mbx->count-- <= 0) { 1018 printf("scd%d: timeout waiting for params\n",unit); 1019 goto readerr; 1020 } 1021 1022waitfor_param: 1023 if (!STATUS_BIT(port, SBIT_RESULT_READY)) { 1024 timeout((timeout_func_t)scd_doread, 1025 (caddr_t)SCD_S_WAITPARAM,hz/100); /* XXX */ 1026 return; 1027 } 1028#if SCD_DEBUG 1029 if (mbx->count < 100 && scd_debuglevel > 0) 1030 printf("scd%d: mbx->count (paramwait) = %d(%d)\n", unit, mbx->count, 100); 1031#endif 1032 1033got_param: 1034 write_control(port, CBIT_RESULT_READY_CLEAR); 1035 switch ((i = inb(port+IREG_RESULT)) & 0xf0) { 1036 case 0x50: 1037 switch (i) { 1038 case ERR_FATAL_READ_ERROR1: 1039 case ERR_FATAL_READ_ERROR2: 1040 printf("scd%d: unrecoverable read error 0x%x\n", unit, i); 1041 goto harderr; 1042 } 1043 break; 1044 case 0x20: 1045 i = inb(port+IREG_RESULT); 1046 switch (i) { 1047 case ERR_NOT_SPINNING: 1048 XDEBUG(1, ("scd%d: read error: drive not spinning\n", unit)); 1049 if (mbx->retry-- > 0) { 1050 state = SCD_S_BEGIN1; 1051 cd->flags &= ~SCDSPINNING; 1052 goto loop; 1053 } 1054 goto harderr; 1055 default: 1056 print_error(unit, i); 1057 goto readerr; 1058 } 1059 case 0x00: 1060 i = inb(port+IREG_RESULT); 1061 break; 1062 } 1063 1064 if (--mbx->nblk > 0) { 1065 mbx->skip += mbx->sz; 1066 goto nextblock; 1067 } 1068 1069 /* return buffer */ 1070 bp->b_resid = 0; 1071 biodone(bp); 1072 1073 cd->flags &= ~SCDMBXBSY; 1074 scd_start(mbx->unit); 1075 return; 1076 } 1077 1078readerr: 1079 if (mbx->retry-- > 0) { 1080 printf("scd%d: retrying ...\n",unit); 1081 state = SCD_S_BEGIN1; 1082 goto loop; 1083 } 1084harderr: 1085 /* invalidate the buffer */ 1086 bp->b_error = EIO; 1087 bp->b_flags |= B_ERROR; 1088 bp->b_resid = bp->b_bcount; 1089 biodone(bp); 1090 1091 cd->flags &= ~SCDMBXBSY; 1092 scd_start(mbx->unit); 1093 return; 1094 1095changed: 1096 printf("scd%d: media changed\n", unit); 1097 goto harderr; 1098} 1099 1100static int 1101bcd2bin(bcd_t b) 1102{ 1103 return (b >> 4) * 10 + (b & 15); 1104} 1105 1106static bcd_t 1107bin2bcd(int b) 1108{ 1109 return ((b / 10) << 4) | (b % 10); 1110} 1111 1112static void 1113hsg2msf(int hsg, bcd_t *msf) 1114{ 1115 hsg += 150; 1116 M_msf(msf) = bin2bcd(hsg / 4500); 1117 hsg %= 4500; 1118 S_msf(msf) = bin2bcd(hsg / 75); 1119 F_msf(msf) = bin2bcd(hsg % 75); 1120} 1121 1122static int 1123msf2hsg(bcd_t *msf) 1124{ 1125 return (bcd2bin(M_msf(msf)) * 60 + 1126 bcd2bin(S_msf(msf))) * 75 + 1127 bcd2bin(F_msf(msf)) - 150; 1128} 1129 1130static void 1131process_attention(unsigned unit) 1132{ 1133 unsigned port = scd_data[unit].iobase; 1134 unsigned char code; 1135 int count = 0; 1136 1137 while (IS_ATTENTION(port) && count++ < 30) { 1138 write_control(port, CBIT_ATTENTION_CLEAR); 1139 code = inb(port+IREG_RESULT); 1140 1141#if SCD_DEBUG 1142 if (scd_debuglevel > 0) { 1143 if (count == 1) 1144 printf("scd%d: DEBUG: ATTENTIONS = 0x%x", unit, code); 1145 else 1146 printf(",0x%x", code); 1147 } 1148#endif 1149 1150 switch (code) { 1151 case ATTEN_SPIN_DOWN: 1152 scd_data[unit].flags &= ~SCDSPINNING; 1153 break; 1154 1155 case ATTEN_SPIN_UP_DONE: 1156 scd_data[unit].flags |= SCDSPINNING; 1157 break; 1158 1159 case ATTEN_AUDIO_DONE: 1160 scd_data[unit].audio_status = CD_AS_PLAY_COMPLETED; 1161 break; 1162 1163 case ATTEN_DRIVE_LOADED: 1164 scd_data[unit].flags &= ~(SCDTOC|SCDSPINNING|SCDVALID); 1165 scd_data[unit].audio_status = CD_AS_AUDIO_INVALID; 1166 break; 1167 1168 case ATTEN_EJECT_PUSHED: 1169 scd_data[unit].flags &= ~SCDVALID; 1170 break; 1171 } 1172 DELAY(100); 1173 } 1174#if SCD_DEBUG 1175 if (scd_debuglevel > 0 && count > 0) 1176 printf("\n"); 1177#endif 1178} 1179 1180/* Returns 0 OR sony error code */ 1181static int 1182spin_up(unsigned unit) 1183{ 1184 unsigned char res_reg[12]; 1185 unsigned int res_size; 1186 int rc; 1187 int loop_count = 0; 1188 1189again: 1190 rc = send_cmd(unit, CMD_SPIN_UP, NULL, 0, res_reg, &res_size); 1191 if (rc != 0) { 1192 XDEBUG(2, ("scd%d: CMD_SPIN_UP error 0x%x\n", unit, rc)); 1193 return rc; 1194 } 1195 1196 if (!(scd_data[unit].flags & SCDTOC)) { 1197 rc = send_cmd(unit, CMD_READ_TOC, 0); 1198 if (rc == ERR_NOT_SPINNING) { 1199 if (loop_count++ < 3) 1200 goto again; 1201 return rc; 1202 } 1203 if (rc != 0) 1204 return rc; 1205 } 1206 1207 scd_data[unit].flags |= SCDSPINNING; 1208 1209 return 0; 1210} 1211 1212static struct sony_tracklist * 1213get_tl(struct sony_toc *toc, int size) 1214{ 1215 struct sony_tracklist *tl = &toc->tracks[0]; 1216 1217 if (tl->track != 0xb0) 1218 return tl; 1219 (char *)tl += 9; 1220 if (tl->track != 0xb1) 1221 return tl; 1222 (char *)tl += 9; 1223 if (tl->track != 0xb2) 1224 return tl; 1225 (char *)tl += 9; 1226 if (tl->track != 0xb3) 1227 return tl; 1228 (char *)tl += 9; 1229 if (tl->track != 0xb4) 1230 return tl; 1231 (char *)tl += 9; 1232 if (tl->track != 0xc0) 1233 return tl; 1234 (char *)tl += 9; 1235 return tl; 1236} 1237 1238static int 1239read_toc(dev_t dev) 1240{ 1241 unsigned unit; 1242 struct scd_data *cd; 1243 unsigned part = 0; /* For now ... */ 1244 struct sony_toc toc; 1245 struct sony_tracklist *tl; 1246 int rc, i, j; 1247 u_long first, last; 1248 1249 unit = scd_unit(dev); 1250 cd = scd_data + unit; 1251 1252 rc = send_cmd(unit, CMD_GET_TOC, 1, part+1); 1253 if (rc < 0) 1254 return rc; 1255 if (rc > sizeof(toc)) { 1256 printf("scd%d: program error: toc too large (%d)\n", unit, rc); 1257 return EIO; 1258 } 1259 if (get_result(unit, rc, (u_char *)&toc) != 0) 1260 return EIO; 1261 1262 XDEBUG(1, ("scd%d: toc read. len = %d, sizeof(toc) = %d\n", unit, rc, sizeof(toc))); 1263 1264 tl = get_tl(&toc, rc); 1265 first = msf2hsg(tl->start_msf); 1266 last = msf2hsg(toc.lead_out_start_msf); 1267 cd->blksize = SCDBLKSIZE; 1268 cd->disksize = last*cd->blksize/DEV_BSIZE; 1269 1270 XDEBUG(1, ("scd%d: firstsector = %ld, lastsector = %ld", unit, 1271 first, last)); 1272 1273 cd->first_track = bcd2bin(toc.first_track); 1274 cd->last_track = bcd2bin(toc.last_track); 1275 if (cd->last_track > (MAX_TRACKS-2)) 1276 cd->last_track = MAX_TRACKS-2; 1277 for (j = 0, i = cd->first_track; i <= cd->last_track; i++, j++) { 1278 cd->toc[i].adr = tl[j].adr; 1279 cd->toc[i].ctl = tl[j].ctl; /* for xcdplayer */ 1280 bcopy(tl[j].start_msf, cd->toc[i].start_msf, 3); 1281#ifdef SCD_DEBUG 1282 if (scd_debuglevel > 0) { 1283 if ((j % 3) == 0) 1284 printf("\nscd%d: tracks ", unit); 1285 printf("[%03d: %2d %2d %2d] ", i, 1286 bcd2bin(cd->toc[i].start_msf[0]), 1287 bcd2bin(cd->toc[i].start_msf[1]), 1288 bcd2bin(cd->toc[i].start_msf[2])); 1289 } 1290#endif 1291 } 1292 bcopy(toc.lead_out_start_msf, cd->toc[cd->last_track+1].start_msf, 3); 1293#ifdef SCD_DEBUG 1294 if (scd_debuglevel > 0) { 1295 i = cd->last_track+1; 1296 printf("[END: %2d %2d %2d]\n", 1297 bcd2bin(cd->toc[i].start_msf[0]), 1298 bcd2bin(cd->toc[i].start_msf[1]), 1299 bcd2bin(cd->toc[i].start_msf[2])); 1300 } 1301#endif 1302 1303 bzero(&cd->dlabel,sizeof(struct disklabel)); 1304 /* filled with spaces first */ 1305 strncpy(cd->dlabel.d_typename," ", 1306 sizeof(cd->dlabel.d_typename)); 1307 strncpy(cd->dlabel.d_typename, cd->name, 1308 min(strlen(cd->name), sizeof(cd->dlabel.d_typename) - 1)); 1309 strncpy(cd->dlabel.d_packname,"unknown ", 1310 sizeof(cd->dlabel.d_packname)); 1311 cd->dlabel.d_secsize = cd->blksize; 1312 cd->dlabel.d_nsectors = 100; 1313 cd->dlabel.d_ntracks = 1; 1314 cd->dlabel.d_ncylinders = (cd->disksize/100)+1; 1315 cd->dlabel.d_secpercyl = 100; 1316 cd->dlabel.d_secperunit = cd->disksize; 1317 cd->dlabel.d_rpm = 300; 1318 cd->dlabel.d_interleave = 1; 1319 cd->dlabel.d_flags = D_REMOVABLE; 1320 cd->dlabel.d_npartitions= 1; 1321 cd->dlabel.d_partitions[0].p_offset = 0; 1322 cd->dlabel.d_partitions[0].p_size = cd->disksize; 1323 cd->dlabel.d_partitions[0].p_fstype = 9; 1324 cd->dlabel.d_magic = DISKMAGIC; 1325 cd->dlabel.d_magic2 = DISKMAGIC; 1326 cd->dlabel.d_checksum = dkcksum(&cd->dlabel); 1327 1328 cd->flags |= SCDTOC; 1329 1330 return 0; 1331} 1332 1333static inline void 1334write_control(unsigned port, unsigned data) 1335{ 1336 outb(port + OREG_CONTROL, data); 1337} 1338 1339static void 1340init_drive(unsigned unit) 1341{ 1342 int rc; 1343 1344 rc = send_cmd(unit, CMD_SET_DRIVE_PARAM, 2, 1345 0x05, 0x03 | ((scd_data[unit].double_speed) ? 0x04: 0)); 1346 if (rc != 0) 1347 printf("scd%d: Unable to set parameters. Errcode = 0x%x\n", unit, rc); 1348} 1349 1350/* Returns 0 or errno */ 1351static int 1352get_result(u_int unit, int result_len, u_char *result) 1353{ 1354 unsigned int port = scd_data[unit].iobase; 1355 unsigned int res_reg = port + IREG_RESULT; 1356 int loop_index = 2; /* send_cmd() reads two bytes ... */ 1357 1358 XDEBUG(1, ("scd%d: DEBUG: get_result: bytes=%d\n", unit, result_len)); 1359 1360 while (result_len-- > 0) { 1361 if (loop_index++ >= 10) { 1362 loop_index = 1; 1363 if (waitfor_status_bits(unit, SBIT_RESULT_READY, 0)) 1364 return EIO; 1365 write_control(port, CBIT_RESULT_READY_CLEAR); 1366 } 1367 if (result) 1368 *result++ = inb(res_reg); 1369 else 1370 (void)inb(res_reg); 1371 } 1372 return 0; 1373} 1374 1375/* Returns -0x100 for timeout, -(drive error code) OR number of result bytes */ 1376static int 1377send_cmd(u_int unit, u_char cmd, u_int nargs, ...) 1378{ 1379 va_list ap; 1380 u_int port = scd_data[unit].iobase; 1381 u_int reg; 1382 u_char c; 1383 int rc; 1384 int i; 1385 1386 if (waitfor_status_bits(unit, 0, SBIT_BUSY)) { 1387 printf("scd%d: drive busy\n", unit); 1388 return -0x100; 1389 } 1390 1391 XDEBUG(1,("scd%d: DEBUG: send_cmd: cmd=0x%x nargs=%d", unit, cmd, nargs)); 1392 1393 write_control(port, CBIT_RESULT_READY_CLEAR); 1394 write_control(port, CBIT_RPARAM_CLEAR); 1395 1396 for (i = 0; i < 100; i++) 1397 if (FSTATUS_BIT(port, FBIT_WPARAM_READY)) 1398 break; 1399 if (!FSTATUS_BIT(port, FBIT_WPARAM_READY)) { 1400 XDEBUG(1, ("\nscd%d: wparam timeout\n", unit)); 1401 return -EIO; 1402 } 1403 1404 va_start(ap, nargs); 1405 reg = port + OREG_WPARAMS; 1406 for (i = 0; i < nargs; i++) { 1407 c = (u_char)va_arg(ap, int); 1408 outb(reg, c); 1409 XDEBUG(1, (",{0x%x}", c)); 1410 } 1411 va_end(ap); 1412 XDEBUG(1, ("\n")); 1413 1414 outb(port+OREG_COMMAND, cmd); 1415 1416 rc = waitfor_status_bits(unit, SBIT_RESULT_READY, SBIT_BUSY); 1417 if (rc) 1418 return -0x100; 1419 1420 reg = port + IREG_RESULT; 1421 write_control(port, CBIT_RESULT_READY_CLEAR); 1422 switch ((rc = inb(reg)) & 0xf0) { 1423 case 0x20: 1424 rc = inb(reg); 1425 /* FALL TROUGH */ 1426 case 0x50: 1427 XDEBUG(1, ("scd%d: DEBUG: send_cmd: drive_error=0x%x\n", unit, rc)); 1428 return -rc; 1429 case 0x00: 1430 default: 1431 rc = inb(reg); 1432 XDEBUG(1, ("scd%d: DEBUG: send_cmd: result_len=%d\n", unit, rc)); 1433 return rc; 1434 } 1435} 1436 1437static void 1438print_error(int unit, int errcode) 1439{ 1440 switch (errcode) { 1441 case -ERR_CD_NOT_LOADED: 1442 printf("scd%d: door is open\n", unit); 1443 break; 1444 case -ERR_NO_CD_INSIDE: 1445 printf("scd%d: no cd inside\n", unit); 1446 break; 1447 default: 1448 if (errcode == -0x100 || errcode > 0) 1449 printf("scd%d: device timeout\n", unit); 1450 else 1451 printf("scd%d: unexpected error 0x%x\n", unit, -errcode); 1452 break; 1453 } 1454} 1455 1456/* Returns 0 or errno value */ 1457static int 1458waitfor_status_bits(int unit, int bits_set, int bits_clear) 1459{ 1460 u_int port = scd_data[unit].iobase; 1461 u_int flags = scd_data[unit].flags; 1462 u_int reg = port + IREG_STATUS; 1463 u_int max_loop; 1464 u_char c = 0; 1465 1466 if (flags & SCDPROBING) { 1467 max_loop = 0; 1468 while (max_loop++ < 1000) { 1469 c = inb(reg); 1470 if (c == 0xff) 1471 return EIO; 1472 if (c & SBIT_ATTENTION) { 1473 process_attention(unit); 1474 continue; 1475 } 1476 if ((c & bits_set) == bits_set && 1477 (c & bits_clear) == 0) 1478 { 1479 break; 1480 } 1481 DELAY(10000); 1482 } 1483 } else { 1484 max_loop = 100; 1485 while (max_loop-- > 0) { 1486 c = inb(reg); 1487 if (c & SBIT_ATTENTION) { 1488 process_attention(unit); 1489 continue; 1490 } 1491 if ((c & bits_set) == bits_set && 1492 (c & bits_clear) == 0) 1493 { 1494 break; 1495 } 1496 tsleep(waitfor_status_bits, PZERO - 1, "waitfor", hz/10); 1497 } 1498 } 1499 if ((c & bits_set) == bits_set && 1500 (c & bits_clear) == 0) 1501 { 1502 return 0; 1503 } 1504#ifdef SCD_DEBUG 1505 if (scd_debuglevel > 0) 1506 printf("scd%d: DEBUG: waitfor: TIMEOUT (0x%x,(0x%x,0x%x))\n", unit, c, bits_set, bits_clear); 1507 else 1508#endif 1509 printf("scd%d: timeout.\n", unit); 1510 return EIO; 1511} 1512 1513/* these two routines for xcdplayer - "borrowed" from mcd.c */ 1514static int 1515scd_toc_header (int unit, struct ioc_toc_header* th) 1516{ 1517 struct scd_data *cd = scd_data + unit; 1518 int rc; 1519 1520 if (!(cd->flags & SCDTOC) && (rc = read_toc(unit)) != 0) { 1521 print_error(unit, rc); 1522 return EIO; 1523 } 1524 1525 th->starting_track = cd->first_track; 1526 th->ending_track = cd->last_track; 1527 th->len = 0; /* not used */ 1528 1529 return 0; 1530} 1531 1532static int 1533scd_toc_entrys (int unit, struct ioc_read_toc_entry *te) 1534{ 1535 struct scd_data *cd = scd_data + unit; 1536 struct cd_toc_entry toc_entry; 1537 int rc, i, len = te->data_len; 1538 1539 if (!(cd->flags & SCDTOC) && (rc = read_toc(unit)) != 0) { 1540 print_error(unit, rc); 1541 return EIO; 1542 } 1543 1544 /* find the toc to copy*/ 1545 i = te->starting_track; 1546 if (i == SCD_LASTPLUS1) 1547 i = cd->last_track + 1; 1548 1549 /* verify starting track */ 1550 if (i < cd->first_track || i > cd->last_track+1) 1551 return EINVAL; 1552 1553 /* valid length ? */ 1554 if (len < sizeof(struct cd_toc_entry) 1555 || (len % sizeof(struct cd_toc_entry)) != 0) 1556 return EINVAL; 1557 1558 /* copy the toc data */ 1559 toc_entry.control = cd->toc[i].ctl; 1560 toc_entry.addr_type = te->address_format; 1561 toc_entry.track = i; 1562 if (te->address_format == CD_MSF_FORMAT) { 1563 toc_entry.addr.msf.unused = 0; 1564 toc_entry.addr.msf.minute = bcd2bin(cd->toc[i].start_msf[0]); 1565 toc_entry.addr.msf.second = bcd2bin(cd->toc[i].start_msf[1]); 1566 toc_entry.addr.msf.frame = bcd2bin(cd->toc[i].start_msf[2]); 1567 } 1568 1569 /* copy the data back */ 1570 if (copyout(&toc_entry, te->data, sizeof(struct cd_toc_entry)) != 0) 1571 return EFAULT; 1572 1573 return 0; 1574} 1575 1576 1577static scd_devsw_installed = 0; 1578 1579static void scd_drvinit(void *unused) 1580{ 1581 dev_t dev; 1582 1583 if( ! scd_devsw_installed ) { 1584 dev = makedev(CDEV_MAJOR, 0); 1585 cdevsw_add(&dev,&scd_cdevsw, NULL); 1586 dev = makedev(BDEV_MAJOR, 0); 1587 bdevsw_add(&dev,&scd_bdevsw, NULL); 1588 scd_devsw_installed = 1; 1589 } 1590} 1591 1592SYSINIT(scddev,SI_SUB_DRIVERS,SI_ORDER_MIDDLE+CDEV_MAJOR,scd_drvinit,NULL) 1593 1594 1595#endif /* NSCD > 0 */ 1596