1 /* $NetBSD: cd.c,v 1.124 1999/02/28 17:14:57 explorer Exp $ */ 2 3 /*- 4 * Copyright (c) 1998 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Charles M. Hannum. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 /* 40 * Originally written by Julian Elischer (julian@tfs.com) 41 * for TRW Financial Systems for use under the MACH(2.5) operating system. 42 * 43 * TRW Financial Systems, in accordance with their agreement with Carnegie 44 * Mellon University, makes this software available to CMU to distribute 45 * or use in any manner that they see fit as long as this message is kept with 46 * the software. For this reason TFS also grants any other persons or 47 * organisations permission to use or modify this software. 48 * 49 * TFS supplies this software to be publicly redistributed 50 * on the understanding that TFS is not responsible for the correct 51 * functioning of this software in any circumstances. 52 * 53 * Ported to run under 386BSD by Julian Elischer (julian@tfs.com) Sept 1992 54 */ 55 56 #include "rnd.h" 57 58 #include <sys/types.h> 59 #include <sys/param.h> 60 #include <sys/systm.h> 61 #include <sys/kernel.h> 62 #include <sys/file.h> 63 #include <sys/stat.h> 64 #include <sys/ioctl.h> 65 #include <sys/buf.h> 66 #include <sys/uio.h> 67 #include <sys/malloc.h> 68 #include <sys/errno.h> 69 #include <sys/device.h> 70 #include <sys/disklabel.h> 71 #include <sys/disk.h> 72 #include <sys/cdio.h> 73 #include <sys/scsiio.h> 74 #include <sys/proc.h> 75 #include <sys/conf.h> 76 #if NRND > 0 77 #include <sys/rnd.h> 78 #endif 79 80 #include <dev/scsipi/scsipi_all.h> 81 #include <dev/scsipi/scsipi_cd.h> 82 #include <dev/scsipi/scsipi_disk.h> /* rw_big and start_stop come */ 83 /* from there */ 84 #include <dev/scsipi/scsi_disk.h> /* rw comes from there */ 85 #include <dev/scsipi/scsipiconf.h> 86 #include <dev/scsipi/cdvar.h> 87 88 #include "cd.h" /* NCD_SCSIBUS and NCD_ATAPIBUS come from here */ 89 90 #define CDOUTSTANDING 4 91 92 #define CDUNIT(z) DISKUNIT(z) 93 #define CDPART(z) DISKPART(z) 94 #define MAKECDDEV(maj, unit, part) MAKEDISKDEV(maj, unit, part) 95 96 #define MAXTRACK 99 97 #define CD_BLOCK_OFFSET 150 98 #define CD_FRAMES 75 99 #define CD_SECS 60 100 101 struct cd_toc { 102 struct ioc_toc_header header; 103 struct cd_toc_entry entries[MAXTRACK+1]; /* One extra for the */ 104 /* leadout */ 105 }; 106 107 int cdlock __P((struct cd_softc *)); 108 void cdunlock __P((struct cd_softc *)); 109 void cdstart __P((void *)); 110 void cdminphys __P((struct buf *)); 111 void cdgetdefaultlabel __P((struct cd_softc *, struct disklabel *)); 112 void cdgetdisklabel __P((struct cd_softc *)); 113 void cddone __P((struct scsipi_xfer *)); 114 u_long cd_size __P((struct cd_softc *, int)); 115 void lba2msf __P((u_long, u_char *, u_char *, u_char *)); 116 u_long msf2lba __P((u_char, u_char, u_char)); 117 int cd_play __P((struct cd_softc *, int, int)); 118 int cd_play_tracks __P((struct cd_softc *, int, int, int, int)); 119 int cd_play_msf __P((struct cd_softc *, int, int, int, int, int, int)); 120 int cd_pause __P((struct cd_softc *, int)); 121 int cd_reset __P((struct cd_softc *)); 122 int cd_read_subchannel __P((struct cd_softc *, int, int, int, 123 struct cd_sub_channel_info *, int)); 124 int cd_read_toc __P((struct cd_softc *, int, int, void *, int, int)); 125 int cd_get_parms __P((struct cd_softc *, int)); 126 int cd_load_toc __P((struct cd_softc *, struct cd_toc *)); 127 128 extern struct cfdriver cd_cd; 129 130 struct dkdriver cddkdriver = { cdstrategy }; 131 132 struct scsipi_device cd_switch = { 133 NULL, /* use default error handler */ 134 cdstart, /* we have a queue, which is started by this */ 135 NULL, /* we do not have an async handler */ 136 cddone, /* deal with stats at interrupt time */ 137 }; 138 139 /* 140 * The routine called by the low level scsi routine when it discovers 141 * A device suitable for this driver 142 */ 143 void 144 cdattach(parent, cd, sc_link, ops) 145 struct device *parent; 146 struct cd_softc *cd; 147 struct scsipi_link *sc_link; 148 const struct cd_ops *ops; 149 { 150 SC_DEBUG(sc_link, SDEV_DB2, ("cdattach: ")); 151 152 /* 153 * Store information needed to contact our base driver 154 */ 155 cd->sc_link = sc_link; 156 cd->sc_ops = ops; 157 sc_link->device = &cd_switch; 158 sc_link->device_softc = cd; 159 if (sc_link->openings > CDOUTSTANDING) 160 sc_link->openings = CDOUTSTANDING; 161 162 /* 163 * Initialize and attach the disk structure. 164 */ 165 cd->sc_dk.dk_driver = &cddkdriver; 166 cd->sc_dk.dk_name = cd->sc_dev.dv_xname; 167 disk_attach(&cd->sc_dk); 168 169 #if !defined(i386) 170 dk_establish(&cd->sc_dk, &cd->sc_dev); /* XXX */ 171 #endif 172 173 printf("\n"); 174 175 #if NRND > 0 176 rnd_attach_source(&cd->rnd_source, cd->sc_dev.dv_xname, 177 RND_TYPE_DISK, 0); 178 #endif 179 } 180 181 /* 182 * Wait interruptibly for an exclusive lock. 183 * 184 * XXX 185 * Several drivers do this; it should be abstracted and made MP-safe. 186 */ 187 int 188 cdlock(cd) 189 struct cd_softc *cd; 190 { 191 int error; 192 193 while ((cd->flags & CDF_LOCKED) != 0) { 194 cd->flags |= CDF_WANTED; 195 if ((error = tsleep(cd, PRIBIO | PCATCH, "cdlck", 0)) != 0) 196 return (error); 197 } 198 cd->flags |= CDF_LOCKED; 199 return (0); 200 } 201 202 /* 203 * Unlock and wake up any waiters. 204 */ 205 void 206 cdunlock(cd) 207 struct cd_softc *cd; 208 { 209 210 cd->flags &= ~CDF_LOCKED; 211 if ((cd->flags & CDF_WANTED) != 0) { 212 cd->flags &= ~CDF_WANTED; 213 wakeup(cd); 214 } 215 } 216 217 /* 218 * open the device. Make sure the partition info is a up-to-date as can be. 219 */ 220 int 221 cdopen(dev, flag, fmt, p) 222 dev_t dev; 223 int flag, fmt; 224 struct proc *p; 225 { 226 struct cd_softc *cd; 227 struct scsipi_link *sc_link; 228 int unit, part; 229 int error; 230 231 unit = CDUNIT(dev); 232 if (unit >= cd_cd.cd_ndevs) 233 return (ENXIO); 234 cd = cd_cd.cd_devs[unit]; 235 if (cd == NULL) 236 return (ENXIO); 237 238 sc_link = cd->sc_link; 239 part = CDPART(dev); 240 241 SC_DEBUG(sc_link, SDEV_DB1, 242 ("cdopen: dev=0x%x (unit %d (of %d), partition %d)\n", dev, unit, 243 cd_cd.cd_ndevs, CDPART(dev))); 244 245 /* 246 * If this is the first open of this device, add a reference 247 * to the adapter. 248 */ 249 if (cd->sc_dk.dk_openmask == 0 && 250 (error = scsipi_adapter_addref(sc_link)) != 0) 251 return (error); 252 253 if ((error = cdlock(cd)) != 0) 254 goto bad4; 255 256 if ((sc_link->flags & SDEV_OPEN) != 0) { 257 /* 258 * If any partition is open, but the disk has been invalidated, 259 * disallow further opens. 260 */ 261 if ((sc_link->flags & SDEV_MEDIA_LOADED) == 0 && 262 (part != RAW_PART || fmt != S_IFCHR )) { 263 error = EIO; 264 goto bad3; 265 } 266 } else { 267 /* Check that it is still responding and ok. */ 268 error = scsipi_test_unit_ready(sc_link, 269 SCSI_IGNORE_ILLEGAL_REQUEST | SCSI_IGNORE_MEDIA_CHANGE | 270 SCSI_IGNORE_NOT_READY); 271 SC_DEBUG(sc_link, SDEV_DB1, 272 ("cdopen: scsipi_test_unit_ready, error=%d\n", error)); 273 if (error) 274 goto bad3; 275 276 /* 277 * Start the pack spinning if necessary. Always allow the 278 * raw parition to be opened, for raw IOCTLs. Data transfers 279 * will check for SDEV_MEDIA_LOADED. 280 */ 281 error = scsipi_start(sc_link, SSS_START, 282 SCSI_IGNORE_ILLEGAL_REQUEST | SCSI_IGNORE_MEDIA_CHANGE | 283 SCSI_SILENT); 284 SC_DEBUG(sc_link, SDEV_DB1, 285 ("cdopen: scsipi_start, error=%d\n", error)); 286 if (error) { 287 if (part != RAW_PART || fmt != S_IFCHR) 288 goto bad3; 289 else 290 goto out; 291 } 292 293 sc_link->flags |= SDEV_OPEN; 294 295 /* Lock the pack in. */ 296 error = scsipi_prevent(sc_link, PR_PREVENT, 297 SCSI_IGNORE_ILLEGAL_REQUEST | SCSI_IGNORE_MEDIA_CHANGE); 298 SC_DEBUG(sc_link, SDEV_DB1, 299 ("cdopen: scsipi_prevent, error=%d\n", error)); 300 if (error) 301 goto bad; 302 303 if ((sc_link->flags & SDEV_MEDIA_LOADED) == 0) { 304 sc_link->flags |= SDEV_MEDIA_LOADED; 305 306 /* Load the physical device parameters. */ 307 if (cd_get_parms(cd, 0) != 0) { 308 error = ENXIO; 309 goto bad2; 310 } 311 SC_DEBUG(sc_link, SDEV_DB3, ("Params loaded ")); 312 313 /* Fabricate a disk label. */ 314 cdgetdisklabel(cd); 315 SC_DEBUG(sc_link, SDEV_DB3, ("Disklabel fabricated ")); 316 } 317 } 318 319 /* Check that the partition exists. */ 320 if (part != RAW_PART && 321 (part >= cd->sc_dk.dk_label->d_npartitions || 322 cd->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { 323 error = ENXIO; 324 goto bad; 325 } 326 327 out: /* Insure only one open at a time. */ 328 switch (fmt) { 329 case S_IFCHR: 330 cd->sc_dk.dk_copenmask |= (1 << part); 331 break; 332 case S_IFBLK: 333 cd->sc_dk.dk_bopenmask |= (1 << part); 334 break; 335 } 336 cd->sc_dk.dk_openmask = 337 cd->sc_dk.dk_copenmask | cd->sc_dk.dk_bopenmask; 338 339 SC_DEBUG(sc_link, SDEV_DB3, ("open complete\n")); 340 cdunlock(cd); 341 return (0); 342 343 bad2: 344 sc_link->flags &= ~SDEV_MEDIA_LOADED; 345 346 bad: 347 if (cd->sc_dk.dk_openmask == 0) { 348 scsipi_prevent(sc_link, PR_ALLOW, 349 SCSI_IGNORE_ILLEGAL_REQUEST | SCSI_IGNORE_MEDIA_CHANGE); 350 sc_link->flags &= ~SDEV_OPEN; 351 } 352 353 bad3: 354 cdunlock(cd); 355 bad4: 356 if (cd->sc_dk.dk_openmask == 0) 357 scsipi_adapter_delref(sc_link); 358 return (error); 359 } 360 361 /* 362 * close the device.. only called if we are the LAST 363 * occurence of an open device 364 */ 365 int 366 cdclose(dev, flag, fmt, p) 367 dev_t dev; 368 int flag, fmt; 369 struct proc *p; 370 { 371 struct cd_softc *cd = cd_cd.cd_devs[CDUNIT(dev)]; 372 int part = CDPART(dev); 373 int error; 374 375 if ((error = cdlock(cd)) != 0) 376 return (error); 377 378 switch (fmt) { 379 case S_IFCHR: 380 cd->sc_dk.dk_copenmask &= ~(1 << part); 381 break; 382 case S_IFBLK: 383 cd->sc_dk.dk_bopenmask &= ~(1 << part); 384 break; 385 } 386 cd->sc_dk.dk_openmask = 387 cd->sc_dk.dk_copenmask | cd->sc_dk.dk_bopenmask; 388 389 if (cd->sc_dk.dk_openmask == 0) { 390 scsipi_wait_drain(cd->sc_link); 391 392 scsipi_prevent(cd->sc_link, PR_ALLOW, 393 SCSI_IGNORE_ILLEGAL_REQUEST | SCSI_IGNORE_NOT_READY); 394 cd->sc_link->flags &= ~SDEV_OPEN; 395 396 scsipi_wait_drain(cd->sc_link); 397 398 scsipi_adapter_delref(cd->sc_link); 399 } 400 401 cdunlock(cd); 402 return (0); 403 } 404 405 /* 406 * Actually translate the requested transfer into one the physical driver can 407 * understand. The transfer is described by a buf and will include only one 408 * physical transfer. 409 */ 410 void 411 cdstrategy(bp) 412 struct buf *bp; 413 { 414 struct cd_softc *cd = cd_cd.cd_devs[CDUNIT(bp->b_dev)]; 415 int opri; 416 417 SC_DEBUG(cd->sc_link, SDEV_DB2, ("cdstrategy ")); 418 SC_DEBUG(cd->sc_link, SDEV_DB1, 419 ("%ld bytes @ blk %d\n", bp->b_bcount, bp->b_blkno)); 420 /* 421 * If the device has been made invalid, error out 422 * maybe the media changed 423 */ 424 if ((cd->sc_link->flags & SDEV_MEDIA_LOADED) == 0) { 425 if (cd->sc_link->flags & SDEV_OPEN) 426 bp->b_error = EIO; 427 else 428 bp->b_error = ENODEV; 429 goto bad; 430 } 431 /* 432 * The transfer must be a whole number of blocks, offset must not 433 * be negative. 434 */ 435 if ((bp->b_bcount % cd->sc_dk.dk_label->d_secsize) != 0 || 436 bp->b_blkno < 0 ) { 437 bp->b_error = EINVAL; 438 goto bad; 439 } 440 /* 441 * If it's a null transfer, return immediately 442 */ 443 if (bp->b_bcount == 0) 444 goto done; 445 446 /* 447 * Do bounds checking, adjust transfer. if error, process. 448 * If end of partition, just return. 449 */ 450 if (CDPART(bp->b_dev) != RAW_PART && 451 bounds_check_with_label(bp, cd->sc_dk.dk_label, 452 (cd->flags & (CDF_WLABEL|CDF_LABELLING)) != 0) <= 0) 453 goto done; 454 455 opri = splbio(); 456 457 /* 458 * Place it in the queue of disk activities for this disk 459 */ 460 disksort(&cd->buf_queue, bp); 461 462 /* 463 * Tell the device to get going on the transfer if it's 464 * not doing anything, otherwise just wait for completion 465 */ 466 cdstart(cd); 467 468 splx(opri); 469 return; 470 471 bad: 472 bp->b_flags |= B_ERROR; 473 done: 474 /* 475 * Correctly set the buf to indicate a completed xfer 476 */ 477 bp->b_resid = bp->b_bcount; 478 biodone(bp); 479 } 480 481 /* 482 * cdstart looks to see if there is a buf waiting for the device 483 * and that the device is not already busy. If both are true, 484 * It deques the buf and creates a scsi command to perform the 485 * transfer in the buf. The transfer request will call scsipi_done 486 * on completion, which will in turn call this routine again 487 * so that the next queued transfer is performed. 488 * The bufs are queued by the strategy routine (cdstrategy) 489 * 490 * This routine is also called after other non-queued requests 491 * have been made of the scsi driver, to ensure that the queue 492 * continues to be drained. 493 * 494 * must be called at the correct (highish) spl level 495 * cdstart() is called at splbio from cdstrategy and scsipi_done 496 */ 497 void 498 cdstart(v) 499 register void *v; 500 { 501 register struct cd_softc *cd = v; 502 register struct scsipi_link *sc_link = cd->sc_link; 503 struct disklabel *lp = cd->sc_dk.dk_label; 504 struct buf *bp = 0; 505 struct buf *dp; 506 struct scsipi_rw_big cmd_big; 507 #if NCD_SCSIBUS > 0 508 struct scsi_rw cmd_small; 509 #endif 510 struct scsipi_generic *cmdp; 511 int blkno, nblks, cmdlen; 512 struct partition *p; 513 514 SC_DEBUG(sc_link, SDEV_DB2, ("cdstart ")); 515 /* 516 * Check if the device has room for another command 517 */ 518 while (sc_link->openings > 0) { 519 /* 520 * there is excess capacity, but a special waits 521 * It'll need the adapter as soon as we clear out of the 522 * way and let it run (user level wait). 523 */ 524 if (sc_link->flags & SDEV_WAITING) { 525 sc_link->flags &= ~SDEV_WAITING; 526 wakeup((caddr_t)sc_link); 527 return; 528 } 529 530 /* 531 * See if there is a buf with work for us to do.. 532 */ 533 dp = &cd->buf_queue; 534 if ((bp = dp->b_actf) == NULL) /* yes, an assign */ 535 return; 536 dp->b_actf = bp->b_actf; 537 538 /* 539 * If the device has become invalid, abort all the 540 * reads and writes until all files have been closed and 541 * re-opened 542 */ 543 if ((sc_link->flags & SDEV_MEDIA_LOADED) == 0) { 544 bp->b_error = EIO; 545 bp->b_flags |= B_ERROR; 546 bp->b_resid = bp->b_bcount; 547 biodone(bp); 548 continue; 549 } 550 551 /* 552 * We have a buf, now we should make a command 553 * 554 * First, translate the block to absolute and put it in terms 555 * of the logical blocksize of the device. 556 */ 557 blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); 558 if (CDPART(bp->b_dev) != RAW_PART) { 559 p = &lp->d_partitions[CDPART(bp->b_dev)]; 560 blkno += p->p_offset; 561 } 562 nblks = howmany(bp->b_bcount, lp->d_secsize); 563 564 #if NCD_SCSIBUS > 0 565 /* 566 * Fill out the scsi command. If the transfer will 567 * fit in a "small" cdb, use it. 568 */ 569 if (((blkno & 0x1fffff) == blkno) && 570 ((nblks & 0xff) == nblks) && sc_link->type == BUS_SCSI) { 571 /* 572 * We can fit in a small cdb. 573 */ 574 bzero(&cmd_small, sizeof(cmd_small)); 575 cmd_small.opcode = (bp->b_flags & B_READ) ? 576 SCSI_READ_COMMAND : SCSI_WRITE_COMMAND; 577 _lto3b(blkno, cmd_small.addr); 578 cmd_small.length = nblks & 0xff; 579 cmdlen = sizeof(cmd_small); 580 cmdp = (struct scsipi_generic *)&cmd_small; 581 } else 582 #endif 583 { 584 /* 585 * Need a large cdb. 586 */ 587 bzero(&cmd_big, sizeof(cmd_big)); 588 cmd_big.opcode = (bp->b_flags & B_READ) ? 589 READ_BIG : WRITE_BIG; 590 _lto4b(blkno, cmd_big.addr); 591 _lto2b(nblks, cmd_big.length); 592 cmdlen = sizeof(cmd_big); 593 cmdp = (struct scsipi_generic *)&cmd_big; 594 } 595 596 /* Instrumentation. */ 597 disk_busy(&cd->sc_dk); 598 599 /* 600 * Call the routine that chats with the adapter. 601 * Note: we cannot sleep as we may be an interrupt 602 */ 603 if (scsipi_command(sc_link, cmdp, cmdlen, (u_char *)bp->b_data, 604 bp->b_bcount, CDRETRIES, 30000, bp, SCSI_NOSLEEP | 605 ((bp->b_flags & B_READ) ? SCSI_DATA_IN : SCSI_DATA_OUT))) { 606 disk_unbusy(&cd->sc_dk, 0); 607 printf("%s: not queued", cd->sc_dev.dv_xname); 608 } 609 } 610 } 611 612 void 613 cddone(xs) 614 struct scsipi_xfer *xs; 615 { 616 struct cd_softc *cd = xs->sc_link->device_softc; 617 618 if (xs->bp != NULL) { 619 disk_unbusy(&cd->sc_dk, xs->bp->b_bcount - xs->bp->b_resid); 620 #if NRND > 0 621 rnd_add_uint32(&cd->rnd_source, xs->bp->b_blkno); 622 #endif 623 } 624 } 625 626 void 627 cdminphys(bp) 628 struct buf *bp; 629 { 630 struct cd_softc *cd = cd_cd.cd_devs[CDUNIT(bp->b_dev)]; 631 long max; 632 633 /* 634 * If the device is ancient, we want to make sure that 635 * the transfer fits into a 6-byte cdb. 636 * 637 * XXX Note that the SCSI-I spec says that 256-block transfers 638 * are allowed in a 6-byte read/write, and are specified 639 * by settng the "length" to 0. However, we're conservative 640 * here, allowing only 255-block transfers in case an 641 * ancient device gets confused by length == 0. A length of 0 642 * in a 10-byte read/write actually means 0 blocks. 643 */ 644 if (cd->flags & CDF_ANCIENT) { 645 max = cd->sc_dk.dk_label->d_secsize * 0xff; 646 647 if (bp->b_bcount > max) 648 bp->b_bcount = max; 649 } 650 651 (*cd->sc_link->adapter->scsipi_minphys)(bp); 652 } 653 654 int 655 cdread(dev, uio, ioflag) 656 dev_t dev; 657 struct uio *uio; 658 int ioflag; 659 { 660 661 return (physio(cdstrategy, NULL, dev, B_READ, cdminphys, uio)); 662 } 663 664 int 665 cdwrite(dev, uio, ioflag) 666 dev_t dev; 667 struct uio *uio; 668 int ioflag; 669 { 670 671 return (physio(cdstrategy, NULL, dev, B_WRITE, cdminphys, uio)); 672 } 673 674 /* 675 * conversion between minute-seconde-frame and logical block adress 676 * adresses format 677 */ 678 void 679 lba2msf (lba, m, s, f) 680 u_long lba; 681 u_char *m, *s, *f; 682 { 683 u_long tmp; 684 685 tmp = lba + CD_BLOCK_OFFSET; /* offset of first logical frame */ 686 tmp &= 0xffffff; /* negative lbas use only 24 bits */ 687 *m = tmp / (CD_SECS * CD_FRAMES); 688 tmp %= (CD_SECS * CD_FRAMES); 689 *s = tmp / CD_FRAMES; 690 *f = tmp % CD_FRAMES; 691 } 692 693 u_long 694 msf2lba (m, s, f) 695 u_char m, s, f; 696 { 697 698 return ((((m * CD_SECS) + s) * CD_FRAMES + f) - CD_BLOCK_OFFSET); 699 } 700 701 702 /* 703 * Perform special action on behalf of the user. 704 * Knows about the internals of this device 705 */ 706 int 707 cdioctl(dev, cmd, addr, flag, p) 708 dev_t dev; 709 u_long cmd; 710 caddr_t addr; 711 int flag; 712 struct proc *p; 713 { 714 struct cd_softc *cd = cd_cd.cd_devs[CDUNIT(dev)]; 715 int part = CDPART(dev); 716 int error; 717 718 SC_DEBUG(cd->sc_link, SDEV_DB2, ("cdioctl 0x%lx ", cmd)); 719 720 /* 721 * If the device is not valid, some IOCTLs can still be 722 * handled on the raw partition. Check this here. 723 */ 724 if ((cd->sc_link->flags & SDEV_MEDIA_LOADED) == 0) { 725 switch (cmd) { 726 case DIOCWLABEL: 727 case DIOCLOCK: 728 case ODIOCEJECT: 729 case DIOCEJECT: 730 case SCIOCIDENTIFY: 731 case OSCIOCIDENTIFY: 732 case SCIOCCOMMAND: 733 case SCIOCDEBUG: 734 case CDIOCGETVOL: 735 case CDIOCSETVOL: 736 case CDIOCSETMONO: 737 case CDIOCSETSTEREO: 738 case CDIOCSETMUTE: 739 case CDIOCSETLEFT: 740 case CDIOCSETRIGHT: 741 case CDIOCCLOSE: 742 case CDIOCEJECT: 743 case CDIOCALLOW: 744 case CDIOCPREVENT: 745 case CDIOCSETDEBUG: 746 case CDIOCCLRDEBUG: 747 case CDIOCRESET: 748 case SCIOCRESET: 749 case CDIOCLOADUNLOAD: 750 if (part == RAW_PART) 751 break; 752 /* FALLTHROUGH */ 753 default: 754 if ((cd->sc_link->flags & SDEV_OPEN) == 0) 755 return (ENODEV); 756 else 757 return (EIO); 758 } 759 } 760 761 switch (cmd) { 762 case DIOCGDINFO: 763 *(struct disklabel *)addr = *(cd->sc_dk.dk_label); 764 return (0); 765 766 case DIOCGPART: 767 ((struct partinfo *)addr)->disklab = cd->sc_dk.dk_label; 768 ((struct partinfo *)addr)->part = 769 &cd->sc_dk.dk_label->d_partitions[part]; 770 return (0); 771 772 case DIOCWDINFO: 773 case DIOCSDINFO: 774 if ((flag & FWRITE) == 0) 775 return (EBADF); 776 777 if ((error = cdlock(cd)) != 0) 778 return (error); 779 cd->flags |= CDF_LABELLING; 780 781 error = setdisklabel(cd->sc_dk.dk_label, 782 (struct disklabel *)addr, /*cd->sc_dk.dk_openmask : */0, 783 cd->sc_dk.dk_cpulabel); 784 if (error == 0) { 785 /* XXX ? */ 786 } 787 788 cd->flags &= ~CDF_LABELLING; 789 cdunlock(cd); 790 return (error); 791 792 case DIOCWLABEL: 793 return (EBADF); 794 795 case DIOCGDEFLABEL: 796 cdgetdefaultlabel(cd, (struct disklabel *)addr); 797 return (0); 798 799 case CDIOCPLAYTRACKS: { 800 struct ioc_play_track *args = (struct ioc_play_track *)addr; 801 802 if ((error = (*cd->sc_ops->cdo_set_pa_immed)(cd, 0)) != 0) 803 return (error); 804 return (cd_play_tracks(cd, args->start_track, 805 args->start_index, args->end_track, args->end_index)); 806 } 807 case CDIOCPLAYMSF: { 808 struct ioc_play_msf *args = (struct ioc_play_msf *)addr; 809 810 if ((error = (*cd->sc_ops->cdo_set_pa_immed)(cd, 0)) != 0) 811 return (error); 812 return (cd_play_msf(cd, args->start_m, args->start_s, 813 args->start_f, args->end_m, args->end_s, args->end_f)); 814 } 815 case CDIOCPLAYBLOCKS: { 816 struct ioc_play_blocks *args = (struct ioc_play_blocks *)addr; 817 818 if ((error = (*cd->sc_ops->cdo_set_pa_immed)(cd, 0)) != 0) 819 return (error); 820 return (cd_play(cd, args->blk, args->len)); 821 } 822 case CDIOCREADSUBCHANNEL: { 823 struct ioc_read_subchannel *args = 824 (struct ioc_read_subchannel *)addr; 825 struct cd_sub_channel_info data; 826 int len = args->data_len; 827 828 if (len > sizeof(data) || 829 len < sizeof(struct cd_sub_channel_header)) 830 return (EINVAL); 831 error = cd_read_subchannel(cd, args->address_format, 832 args->data_format, args->track, &data, len); 833 if (error) 834 return (error); 835 len = min(len, _2btol(data.header.data_len) + 836 sizeof(struct cd_sub_channel_header)); 837 return (copyout(&data, args->data, len)); 838 } 839 case CDIOREADTOCHEADER: { 840 struct ioc_toc_header th; 841 842 if ((error = cd_read_toc(cd, 0, 0, &th, sizeof(th), 0)) != 0) 843 return (error); 844 if (cd->sc_link->quirks & ADEV_LITTLETOC) { 845 #if BYTE_ORDER == BIG_ENDIAN 846 bswap((u_int8_t *)&th.len, sizeof(th.len)); 847 #endif 848 } else 849 th.len = ntohs(th.len); 850 bcopy(&th, addr, sizeof(th)); 851 return (0); 852 } 853 case CDIOREADTOCENTRYS: { 854 struct cd_toc toc; 855 struct ioc_read_toc_entry *te = 856 (struct ioc_read_toc_entry *)addr; 857 struct ioc_toc_header *th; 858 struct cd_toc_entry *cte; 859 int len = te->data_len; 860 int ntracks; 861 862 th = &toc.header; 863 864 if (len > sizeof(toc.entries) || 865 len < sizeof(struct cd_toc_entry)) 866 return (EINVAL); 867 error = cd_read_toc(cd, te->address_format, te->starting_track, 868 &toc, len + sizeof(struct ioc_toc_header), 0); 869 if (error) 870 return (error); 871 if (te->address_format == CD_LBA_FORMAT) 872 for (ntracks = 873 th->ending_track - th->starting_track + 1; 874 ntracks >= 0; ntracks--) { 875 cte = &toc.entries[ntracks]; 876 cte->addr_type = CD_LBA_FORMAT; 877 if (cd->sc_link->quirks & ADEV_LITTLETOC) { 878 #if BYTE_ORDER == BIG_ENDIAN 879 bswap((u_int8_t*)&cte->addr, 880 sizeof(cte->addr)); 881 #endif 882 } else 883 cte->addr.lba = ntohl(cte->addr.lba); 884 } 885 if (cd->sc_link->quirks & ADEV_LITTLETOC) { 886 #if BYTE_ORDER == BIG_ENDIAN 887 bswap((u_int8_t*)&th->len, sizeof(th->len)); 888 #endif 889 } else 890 th->len = ntohs(th->len); 891 len = min(len, th->len - (sizeof(th->starting_track) + 892 sizeof(th->ending_track))); 893 return (copyout(toc.entries, te->data, len)); 894 } 895 case CDIOREADMSADDR: { 896 struct cd_toc toc; 897 int sessno = *(int*)addr; 898 struct cd_toc_entry *cte; 899 900 if (sessno != 0) 901 return (EINVAL); 902 903 error = cd_read_toc(cd, 0, 0, &toc, 904 sizeof(struct ioc_toc_header) + sizeof(struct cd_toc_entry), 905 0x40 /* control word for "get MS info" */); 906 907 if (error) 908 return (error); 909 910 cte = &toc.entries[0]; 911 if (cd->sc_link->quirks & ADEV_LITTLETOC) { 912 #if BYTE_ORDER == BIG_ENDIAN 913 bswap((u_int8_t*)&cte->addr, sizeof(cte->addr)); 914 #endif 915 } else 916 cte->addr.lba = ntohl(cte->addr.lba); 917 if (cd->sc_link->quirks & ADEV_LITTLETOC) { 918 #if BYTE_ORDER == BIG_ENDIAN 919 bswap((u_int8_t*)&toc.header.len, sizeof(toc.header.len)); 920 #endif 921 } else 922 toc.header.len = ntohs(toc.header.len); 923 924 *(int*)addr = (toc.header.len >= 10 && cte->track > 1) ? 925 cte->addr.lba : 0; 926 return 0; 927 } 928 case CDIOCSETPATCH: { 929 struct ioc_patch *arg = (struct ioc_patch *)addr; 930 931 return ((*cd->sc_ops->cdo_setchan)(cd, arg->patch[0], 932 arg->patch[1], arg->patch[2], arg->patch[3], 0)); 933 } 934 case CDIOCGETVOL: { 935 struct ioc_vol *arg = (struct ioc_vol *)addr; 936 937 return ((*cd->sc_ops->cdo_getvol)(cd, arg, 0)); 938 } 939 case CDIOCSETVOL: { 940 struct ioc_vol *arg = (struct ioc_vol *)addr; 941 942 return ((*cd->sc_ops->cdo_setvol)(cd, arg, 0)); 943 } 944 945 case CDIOCSETMONO: 946 return ((*cd->sc_ops->cdo_setchan)(cd, BOTH_CHANNEL, 947 BOTH_CHANNEL, MUTE_CHANNEL, MUTE_CHANNEL, 0)); 948 949 case CDIOCSETSTEREO: 950 return ((*cd->sc_ops->cdo_setchan)(cd, LEFT_CHANNEL, 951 RIGHT_CHANNEL, MUTE_CHANNEL, MUTE_CHANNEL, 0)); 952 953 case CDIOCSETMUTE: 954 return ((*cd->sc_ops->cdo_setchan)(cd, MUTE_CHANNEL, 955 MUTE_CHANNEL, MUTE_CHANNEL, MUTE_CHANNEL, 0)); 956 957 case CDIOCSETLEFT: 958 return ((*cd->sc_ops->cdo_setchan)(cd, LEFT_CHANNEL, 959 LEFT_CHANNEL, MUTE_CHANNEL, MUTE_CHANNEL, 0)); 960 961 case CDIOCSETRIGHT: 962 return ((*cd->sc_ops->cdo_setchan)(cd, RIGHT_CHANNEL, 963 RIGHT_CHANNEL, MUTE_CHANNEL, MUTE_CHANNEL, 0)); 964 965 case CDIOCRESUME: 966 return (cd_pause(cd, PA_RESUME)); 967 case CDIOCPAUSE: 968 return (cd_pause(cd, PA_PAUSE)); 969 case CDIOCSTART: 970 return (scsipi_start(cd->sc_link, SSS_START, 0)); 971 case CDIOCSTOP: 972 return (scsipi_start(cd->sc_link, SSS_STOP, 0)); 973 case CDIOCCLOSE: 974 return (scsipi_start(cd->sc_link, SSS_START|SSS_LOEJ, 975 SCSI_IGNORE_MEDIA_CHANGE)); 976 case DIOCEJECT: 977 if (*(int *)addr == 0) { 978 /* 979 * Don't force eject: check that we are the only 980 * partition open. If so, unlock it. 981 */ 982 if ((cd->sc_dk.dk_openmask & ~(1 << part)) == 0 && 983 cd->sc_dk.dk_bopenmask + cd->sc_dk.dk_copenmask == 984 cd->sc_dk.dk_openmask) { 985 error = scsipi_prevent(cd->sc_link, PR_ALLOW, 986 SCSI_IGNORE_NOT_READY); 987 if (error) 988 return (error); 989 } else { 990 return (EBUSY); 991 } 992 } 993 /* FALLTHROUGH */ 994 case CDIOCEJECT: /* FALLTHROUGH */ 995 case ODIOCEJECT: 996 return (scsipi_start(cd->sc_link, SSS_STOP|SSS_LOEJ, 0)); 997 case CDIOCALLOW: 998 return (scsipi_prevent(cd->sc_link, PR_ALLOW, 0)); 999 case CDIOCPREVENT: 1000 return (scsipi_prevent(cd->sc_link, PR_PREVENT, 0)); 1001 case DIOCLOCK: 1002 return (scsipi_prevent(cd->sc_link, 1003 (*(int *)addr) ? PR_PREVENT : PR_ALLOW, 0)); 1004 case CDIOCSETDEBUG: 1005 cd->sc_link->flags |= (SDEV_DB1 | SDEV_DB2); 1006 return (0); 1007 case CDIOCCLRDEBUG: 1008 cd->sc_link->flags &= ~(SDEV_DB1 | SDEV_DB2); 1009 return (0); 1010 case CDIOCRESET: 1011 case SCIOCRESET: 1012 return (cd_reset(cd)); 1013 case CDIOCLOADUNLOAD: { 1014 struct ioc_load_unload *args = (struct ioc_load_unload *)addr; 1015 1016 return ((*cd->sc_ops->cdo_load_unload)(cd, args->options, 1017 args->slot)); 1018 } 1019 1020 default: 1021 if (part != RAW_PART) 1022 return (ENOTTY); 1023 return (scsipi_do_ioctl(cd->sc_link, dev, cmd, addr, flag, p)); 1024 } 1025 1026 #ifdef DIAGNOSTIC 1027 panic("cdioctl: impossible"); 1028 #endif 1029 } 1030 1031 void 1032 cdgetdefaultlabel(cd, lp) 1033 struct cd_softc *cd; 1034 struct disklabel *lp; 1035 { 1036 1037 bzero(lp, sizeof(struct disklabel)); 1038 1039 lp->d_secsize = cd->params.blksize; 1040 lp->d_ntracks = 1; 1041 lp->d_nsectors = 100; 1042 lp->d_ncylinders = (cd->params.disksize / 100) + 1; 1043 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 1044 1045 switch (cd->sc_link->type) { 1046 #if NCD_SCSIBUS > 0 1047 case BUS_SCSI: 1048 lp->d_type = DTYPE_SCSI; 1049 break; 1050 #endif 1051 #if NCD_ATAPIBUS > 0 1052 case BUS_ATAPI: 1053 lp->d_type = DTYPE_ATAPI; 1054 break; 1055 #endif 1056 } 1057 strncpy(lp->d_typename, cd->name, 16); 1058 strncpy(lp->d_packname, "fictitious", 16); 1059 lp->d_secperunit = cd->params.disksize; 1060 lp->d_rpm = 300; 1061 lp->d_interleave = 1; 1062 lp->d_flags = D_REMOVABLE; 1063 1064 lp->d_partitions[0].p_offset = 0; 1065 lp->d_partitions[0].p_size = 1066 lp->d_secperunit * (lp->d_secsize / DEV_BSIZE); 1067 lp->d_partitions[0].p_fstype = FS_ISO9660; 1068 lp->d_partitions[RAW_PART].p_offset = 0; 1069 lp->d_partitions[RAW_PART].p_size = 1070 lp->d_secperunit * (lp->d_secsize / DEV_BSIZE); 1071 lp->d_partitions[RAW_PART].p_fstype = FS_ISO9660; 1072 lp->d_npartitions = RAW_PART + 1; 1073 1074 lp->d_magic = DISKMAGIC; 1075 lp->d_magic2 = DISKMAGIC; 1076 lp->d_checksum = dkcksum(lp); 1077 } 1078 1079 /* 1080 * Load the label information on the named device 1081 * Actually fabricate a disklabel 1082 * 1083 * EVENTUALLY take information about different 1084 * data tracks from the TOC and put it in the disklabel 1085 */ 1086 void 1087 cdgetdisklabel(cd) 1088 struct cd_softc *cd; 1089 { 1090 struct disklabel *lp = cd->sc_dk.dk_label; 1091 1092 bzero(cd->sc_dk.dk_cpulabel, sizeof(struct cpu_disklabel)); 1093 1094 cdgetdefaultlabel(cd, lp); 1095 } 1096 1097 /* 1098 * Find out from the device what it's capacity is 1099 */ 1100 u_long 1101 cd_size(cd, flags) 1102 struct cd_softc *cd; 1103 int flags; 1104 { 1105 struct scsipi_read_cd_cap_data rdcap; 1106 struct scsipi_read_cd_capacity scsipi_cmd; 1107 int blksize; 1108 u_long size; 1109 1110 if (cd->sc_link->quirks & ADEV_NOCAPACITY) { 1111 /* 1112 * the drive doesn't support the READ_CD_CAPACITY command 1113 * use a fake size 1114 */ 1115 cd->params.blksize = 2048; 1116 cd->params.disksize = 400000; 1117 return (400000); 1118 } 1119 1120 /* 1121 * make up a scsi command and ask the scsi driver to do 1122 * it for you. 1123 */ 1124 bzero(&scsipi_cmd, sizeof(scsipi_cmd)); 1125 scsipi_cmd.opcode = READ_CD_CAPACITY; 1126 1127 /* 1128 * If the command works, interpret the result as a 4 byte 1129 * number of blocks and a blocksize 1130 */ 1131 if (scsipi_command(cd->sc_link, 1132 (struct scsipi_generic *)&scsipi_cmd, sizeof(scsipi_cmd), 1133 (u_char *)&rdcap, sizeof(rdcap), CDRETRIES, 20000, NULL, 1134 flags | SCSI_DATA_IN) != 0) 1135 return (0); 1136 1137 blksize = _4btol(rdcap.length); 1138 if ((blksize < 512) || ((blksize & 511) != 0)) 1139 blksize = 2048; /* some drives lie ! */ 1140 cd->params.blksize = blksize; 1141 1142 size = _4btol(rdcap.addr) + 1; 1143 if (size < 100) 1144 size = 400000; /* ditto */ 1145 cd->params.disksize = size; 1146 1147 SC_DEBUG(cd->sc_link, SDEV_DB2, ("cd_size: %d %ld\n", blksize, size)); 1148 return (size); 1149 } 1150 1151 /* 1152 * Get scsi driver to send a "start playing" command 1153 */ 1154 int 1155 cd_play(cd, blkno, nblks) 1156 struct cd_softc *cd; 1157 int blkno, nblks; 1158 { 1159 struct scsipi_play scsipi_cmd; 1160 1161 bzero(&scsipi_cmd, sizeof(scsipi_cmd)); 1162 scsipi_cmd.opcode = PLAY; 1163 _lto4b(blkno, scsipi_cmd.blk_addr); 1164 _lto2b(nblks, scsipi_cmd.xfer_len); 1165 return (scsipi_command(cd->sc_link, 1166 (struct scsipi_generic *)&scsipi_cmd, sizeof(scsipi_cmd), 1167 0, 0, CDRETRIES, 200000, NULL, 0)); 1168 } 1169 1170 /* 1171 * Get scsi driver to send a "start playing" command 1172 */ 1173 int 1174 cd_play_tracks(cd, strack, sindex, etrack, eindex) 1175 struct cd_softc *cd; 1176 int strack, sindex, etrack, eindex; 1177 { 1178 struct cd_toc toc; 1179 int error; 1180 1181 if (!etrack) 1182 return (EIO); 1183 if (strack > etrack) 1184 return (EINVAL); 1185 1186 if ((error = cd_load_toc(cd, &toc)) != 0) 1187 return (error); 1188 1189 if (++etrack > (toc.header.ending_track+1)) 1190 etrack = toc.header.ending_track+1; 1191 1192 strack -= toc.header.starting_track; 1193 etrack -= toc.header.starting_track; 1194 if (strack < 0) 1195 return (EINVAL); 1196 1197 return (cd_play_msf(cd, toc.entries[strack].addr.msf.minute, 1198 toc.entries[strack].addr.msf.second, 1199 toc.entries[strack].addr.msf.frame, 1200 toc.entries[etrack].addr.msf.minute, 1201 toc.entries[etrack].addr.msf.second, 1202 toc.entries[etrack].addr.msf.frame)); 1203 } 1204 1205 /* 1206 * Get scsi driver to send a "play msf" command 1207 */ 1208 int 1209 cd_play_msf(cd, startm, starts, startf, endm, ends, endf) 1210 struct cd_softc *cd; 1211 int startm, starts, startf, endm, ends, endf; 1212 { 1213 struct scsipi_play_msf scsipi_cmd; 1214 1215 bzero(&scsipi_cmd, sizeof(scsipi_cmd)); 1216 scsipi_cmd.opcode = PLAY_MSF; 1217 scsipi_cmd.start_m = startm; 1218 scsipi_cmd.start_s = starts; 1219 scsipi_cmd.start_f = startf; 1220 scsipi_cmd.end_m = endm; 1221 scsipi_cmd.end_s = ends; 1222 scsipi_cmd.end_f = endf; 1223 return (scsipi_command(cd->sc_link, 1224 (struct scsipi_generic *)&scsipi_cmd, sizeof(scsipi_cmd), 1225 0, 0, CDRETRIES, 2000, NULL, 0)); 1226 } 1227 1228 /* 1229 * Get scsi driver to send a "start up" command 1230 */ 1231 int 1232 cd_pause(cd, go) 1233 struct cd_softc *cd; 1234 int go; 1235 { 1236 struct scsipi_pause scsipi_cmd; 1237 1238 bzero(&scsipi_cmd, sizeof(scsipi_cmd)); 1239 scsipi_cmd.opcode = PAUSE; 1240 scsipi_cmd.resume = go & 0xff; 1241 return (scsipi_command(cd->sc_link, 1242 (struct scsipi_generic *)&scsipi_cmd, sizeof(scsipi_cmd), 1243 0, 0, CDRETRIES, 2000, NULL, 0)); 1244 } 1245 1246 /* 1247 * Get scsi driver to send a "RESET" command 1248 */ 1249 int 1250 cd_reset(cd) 1251 struct cd_softc *cd; 1252 { 1253 1254 return (scsipi_command(cd->sc_link, 0, 0, 0, 0, 1255 CDRETRIES, 2000, NULL, SCSI_RESET)); 1256 } 1257 1258 /* 1259 * Read subchannel 1260 */ 1261 int 1262 cd_read_subchannel(cd, mode, format, track, data, len) 1263 struct cd_softc *cd; 1264 int mode, format, track, len; 1265 struct cd_sub_channel_info *data; 1266 { 1267 struct scsipi_read_subchannel scsipi_cmd; 1268 1269 bzero(&scsipi_cmd, sizeof(scsipi_cmd)); 1270 scsipi_cmd.opcode = READ_SUBCHANNEL; 1271 if (mode == CD_MSF_FORMAT) 1272 scsipi_cmd.byte2 |= CD_MSF; 1273 scsipi_cmd.byte3 = SRS_SUBQ; 1274 scsipi_cmd.subchan_format = format; 1275 scsipi_cmd.track = track; 1276 _lto2b(len, scsipi_cmd.data_len); 1277 return (scsipi_command(cd->sc_link, 1278 (struct scsipi_generic *)&scsipi_cmd, 1279 sizeof(struct scsipi_read_subchannel), (u_char *)data, len, 1280 CDRETRIES, 5000, NULL, SCSI_DATA_IN|SCSI_SILENT)); 1281 } 1282 1283 /* 1284 * Read table of contents 1285 */ 1286 int 1287 cd_read_toc(cd, mode, start, data, len, control) 1288 struct cd_softc *cd; 1289 int mode, start, len, control; 1290 void *data; 1291 { 1292 struct scsipi_read_toc scsipi_cmd; 1293 int ntoc; 1294 1295 bzero(&scsipi_cmd, sizeof(scsipi_cmd)); 1296 #if 0 1297 if (len != sizeof(struct ioc_toc_header)) 1298 ntoc = ((len) - sizeof(struct ioc_toc_header)) / 1299 sizeof(struct cd_toc_entry); 1300 else 1301 #endif 1302 ntoc = len; 1303 scsipi_cmd.opcode = READ_TOC; 1304 if (mode == CD_MSF_FORMAT) 1305 scsipi_cmd.byte2 |= CD_MSF; 1306 scsipi_cmd.from_track = start; 1307 _lto2b(ntoc, scsipi_cmd.data_len); 1308 scsipi_cmd.control = control; 1309 return (scsipi_command(cd->sc_link, 1310 (struct scsipi_generic *)&scsipi_cmd, 1311 sizeof(struct scsipi_read_toc), (u_char *)data, len, CDRETRIES, 1312 5000, NULL, SCSI_DATA_IN)); 1313 } 1314 1315 int 1316 cd_load_toc(cd, toc) 1317 struct cd_softc *cd; 1318 struct cd_toc *toc; 1319 { 1320 int ntracks, len, error; 1321 1322 if ((error = cd_read_toc(cd, 0, 0, toc, sizeof(toc->header), 0)) != 0) 1323 return (error); 1324 1325 ntracks = toc->header.ending_track - toc->header.starting_track + 1; 1326 len = (ntracks + 1) * sizeof(struct cd_toc_entry) + 1327 sizeof(toc->header); 1328 if ((error = cd_read_toc(cd, CD_MSF_FORMAT, 0, toc, len, 0)) != 0) 1329 return (error); 1330 return (0); 1331 } 1332 1333 /* 1334 * Get the scsi driver to send a full inquiry to the device and use the 1335 * results to fill out the disk parameter structure. 1336 */ 1337 int 1338 cd_get_parms(cd, flags) 1339 struct cd_softc *cd; 1340 int flags; 1341 { 1342 1343 /* 1344 * give a number of sectors so that sec * trks * cyls 1345 * is <= disk_size 1346 */ 1347 if (cd_size(cd, flags) == 0) 1348 return (ENXIO); 1349 return (0); 1350 } 1351 1352 int 1353 cdsize(dev) 1354 dev_t dev; 1355 { 1356 1357 /* CD-ROMs are read-only. */ 1358 return (-1); 1359 } 1360 1361 int 1362 cddump(dev, blkno, va, size) 1363 dev_t dev; 1364 daddr_t blkno; 1365 caddr_t va; 1366 size_t size; 1367 { 1368 1369 /* Not implemented. */ 1370 return (ENXIO); 1371 } 1372