1 /* $NetBSD: ch.c,v 1.62 2004/09/09 19:35:30 bouyer Exp $ */ 2 3 /*- 4 * Copyright (c) 1996, 1997, 1998, 1999 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 9 * NASA Ames Research Center. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by the NetBSD 22 * Foundation, Inc. and its contributors. 23 * 4. Neither the name of The NetBSD Foundation nor the names of its 24 * contributors may be used to endorse or promote products derived 25 * from this software without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 28 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 29 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 30 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 37 * POSSIBILITY OF SUCH DAMAGE. 38 */ 39 40 #include <sys/cdefs.h> 41 __KERNEL_RCSID(0, "$NetBSD: ch.c,v 1.62 2004/09/09 19:35:30 bouyer Exp $"); 42 43 #include <sys/param.h> 44 #include <sys/systm.h> 45 #include <sys/kernel.h> 46 #include <sys/errno.h> 47 #include <sys/ioctl.h> 48 #include <sys/buf.h> 49 #include <sys/proc.h> 50 #include <sys/user.h> 51 #include <sys/chio.h> 52 #include <sys/device.h> 53 #include <sys/malloc.h> 54 #include <sys/conf.h> 55 #include <sys/fcntl.h> 56 #include <sys/vnode.h> 57 #include <sys/time.h> 58 #include <sys/select.h> 59 #include <sys/poll.h> 60 61 #include <dev/scsipi/scsipi_all.h> 62 #include <dev/scsipi/scsi_all.h> 63 #include <dev/scsipi/scsi_changer.h> 64 #include <dev/scsipi/scsiconf.h> 65 66 #define CHRETRIES 2 67 #define CHUNIT(x) (minor((x))) 68 69 struct ch_softc { 70 struct device sc_dev; /* generic device info */ 71 struct scsipi_periph *sc_periph;/* our periph data */ 72 73 u_int sc_events; /* event bitmask */ 74 struct selinfo sc_selq; /* select/poll queue for events */ 75 76 int sc_flags; /* misc. info */ 77 78 int sc_picker; /* current picker */ 79 80 /* 81 * The following information is obtained from the 82 * element address assignment page. 83 */ 84 int sc_firsts[4]; /* firsts, indexed by CHET_* */ 85 int sc_counts[4]; /* counts, indexed by CHET_* */ 86 87 /* 88 * The following mask defines the legal combinations 89 * of elements for the MOVE MEDIUM command. 90 */ 91 u_int8_t sc_movemask[4]; 92 93 /* 94 * As above, but for EXCHANGE MEDIUM. 95 */ 96 u_int8_t sc_exchangemask[4]; 97 98 /* 99 * Quirks; see below. 100 */ 101 int sc_settledelay; /* delay for settle */ 102 103 }; 104 105 /* sc_flags */ 106 #define CHF_ROTATE 0x01 /* picker can rotate */ 107 108 /* Autoconfiguration glue */ 109 static int chmatch(struct device *, struct cfdata *, void *); 110 static void chattach(struct device *, struct device *, void *); 111 112 CFATTACH_DECL(ch, sizeof(struct ch_softc), 113 chmatch, chattach, NULL, NULL); 114 115 extern struct cfdriver ch_cd; 116 117 static struct scsipi_inquiry_pattern ch_patterns[] = { 118 {T_CHANGER, T_REMOV, 119 "", "", ""}, 120 }; 121 122 static dev_type_open(chopen); 123 static dev_type_close(chclose); 124 static dev_type_read(chread); 125 static dev_type_ioctl(chioctl); 126 static dev_type_poll(chpoll); 127 static dev_type_kqfilter(chkqfilter); 128 129 const struct cdevsw ch_cdevsw = { 130 chopen, chclose, chread, nowrite, chioctl, 131 nostop, notty, chpoll, nommap, chkqfilter, 132 }; 133 134 /* SCSI glue */ 135 static int ch_interpret_sense(struct scsipi_xfer *); 136 137 static const struct scsipi_periphsw ch_switch = { 138 ch_interpret_sense, /* check our error handler first */ 139 NULL, /* no queue; our commands are synchronous */ 140 NULL, /* have no async handler */ 141 NULL, /* nothing to be done when xfer is done */ 142 }; 143 144 static int ch_move(struct ch_softc *, struct changer_move_request *); 145 static int ch_exchange(struct ch_softc *, 146 struct changer_exchange_request *); 147 static int ch_position(struct ch_softc *, 148 struct changer_position_request *); 149 static int ch_ielem(struct ch_softc *); 150 static int ch_ousergetelemstatus(struct ch_softc *, int, u_int8_t *); 151 static int ch_usergetelemstatus(struct ch_softc *, 152 struct changer_element_status_request *); 153 static int ch_getelemstatus(struct ch_softc *, int, int, void *, 154 size_t, int, int); 155 static int ch_setvoltag(struct ch_softc *, 156 struct changer_set_voltag_request *); 157 static int ch_get_params(struct ch_softc *, int); 158 static void ch_get_quirks(struct ch_softc *, 159 struct scsipi_inquiry_pattern *); 160 static void ch_event(struct ch_softc *, u_int); 161 static int ch_map_element(struct ch_softc *, u_int16_t, int *, int *); 162 163 static void ch_voltag_convert_in(const struct changer_volume_tag *, 164 struct changer_voltag *); 165 static int ch_voltag_convert_out(const struct changer_voltag *, 166 struct changer_volume_tag *); 167 168 /* 169 * SCSI changer quirks. 170 */ 171 struct chquirk { 172 struct scsipi_inquiry_pattern cq_match; /* device id pattern */ 173 int cq_settledelay; /* settle delay, in seconds */ 174 }; 175 176 static const struct chquirk chquirks[] = { 177 {{T_CHANGER, T_REMOV, 178 "SPECTRA", "9000", "0200"}, 179 75}, 180 }; 181 182 static int 183 chmatch(struct device *parent, struct cfdata *match, void *aux) 184 { 185 struct scsipibus_attach_args *sa = aux; 186 int priority; 187 188 (void)scsipi_inqmatch(&sa->sa_inqbuf, 189 (caddr_t)ch_patterns, sizeof(ch_patterns) / sizeof(ch_patterns[0]), 190 sizeof(ch_patterns[0]), &priority); 191 192 return (priority); 193 } 194 195 static void 196 chattach(struct device *parent, struct device *self, void *aux) 197 { 198 struct ch_softc *sc = (struct ch_softc *)self; 199 struct scsipibus_attach_args *sa = aux; 200 struct scsipi_periph *periph = sa->sa_periph; 201 202 /* Glue into the SCSI bus */ 203 sc->sc_periph = periph; 204 periph->periph_dev = &sc->sc_dev; 205 periph->periph_switch = &ch_switch; 206 207 printf("\n"); 208 209 /* 210 * Find out our device's quirks. 211 */ 212 ch_get_quirks(sc, &sa->sa_inqbuf); 213 214 /* 215 * Some changers require a long time to settle out, to do 216 * tape inventory, for instance. 217 */ 218 if (sc->sc_settledelay) { 219 printf("%s: waiting %d seconds for changer to settle...\n", 220 sc->sc_dev.dv_xname, sc->sc_settledelay); 221 delay(1000000 * sc->sc_settledelay); 222 } 223 224 /* 225 * Get information about the device. Note we can't use 226 * interrupts yet. 227 */ 228 if (ch_get_params(sc, XS_CTL_DISCOVERY|XS_CTL_IGNORE_MEDIA_CHANGE)) 229 printf("%s: offline\n", sc->sc_dev.dv_xname); 230 else { 231 #define PLURAL(c) (c) == 1 ? "" : "s" 232 printf("%s: %d slot%s, %d drive%s, %d picker%s, %d portal%s\n", 233 sc->sc_dev.dv_xname, 234 sc->sc_counts[CHET_ST], PLURAL(sc->sc_counts[CHET_ST]), 235 sc->sc_counts[CHET_DT], PLURAL(sc->sc_counts[CHET_DT]), 236 sc->sc_counts[CHET_MT], PLURAL(sc->sc_counts[CHET_MT]), 237 sc->sc_counts[CHET_IE], PLURAL(sc->sc_counts[CHET_IE])); 238 #undef PLURAL 239 #ifdef CHANGER_DEBUG 240 printf("%s: move mask: 0x%x 0x%x 0x%x 0x%x\n", 241 sc->sc_dev.dv_xname, 242 sc->sc_movemask[CHET_MT], sc->sc_movemask[CHET_ST], 243 sc->sc_movemask[CHET_IE], sc->sc_movemask[CHET_DT]); 244 printf("%s: exchange mask: 0x%x 0x%x 0x%x 0x%x\n", 245 sc->sc_dev.dv_xname, 246 sc->sc_exchangemask[CHET_MT], sc->sc_exchangemask[CHET_ST], 247 sc->sc_exchangemask[CHET_IE], sc->sc_exchangemask[CHET_DT]); 248 #endif /* CHANGER_DEBUG */ 249 } 250 251 /* Default the current picker. */ 252 sc->sc_picker = sc->sc_firsts[CHET_MT]; 253 } 254 255 static int 256 chopen(dev_t dev, int flags, int fmt, struct proc *p) 257 { 258 struct ch_softc *sc; 259 struct scsipi_periph *periph; 260 struct scsipi_adapter *adapt; 261 int unit, error; 262 263 unit = CHUNIT(dev); 264 if ((unit >= ch_cd.cd_ndevs) || 265 ((sc = ch_cd.cd_devs[unit]) == NULL)) 266 return (ENXIO); 267 268 periph = sc->sc_periph; 269 adapt = periph->periph_channel->chan_adapter; 270 271 /* 272 * Only allow one open at a time. 273 */ 274 if (periph->periph_flags & PERIPH_OPEN) 275 return (EBUSY); 276 277 if ((error = scsipi_adapter_addref(adapt)) != 0) 278 return (error); 279 280 /* 281 * Make sure the unit is on-line. If a UNIT ATTENTION 282 * occurs, we will mark that an Init-Element-Status is 283 * needed in ch_get_params(). 284 * 285 * We ignore NOT READY in case e.g a magazine isn't actually 286 * loaded into the changer or a tape isn't in the drive. 287 */ 288 error = scsipi_test_unit_ready(periph, XS_CTL_IGNORE_NOT_READY); 289 if (error) 290 goto bad; 291 292 periph->periph_flags |= PERIPH_OPEN; 293 294 /* 295 * Make sure our parameters are up to date. 296 */ 297 if ((error = ch_get_params(sc, 0)) != 0) 298 goto bad; 299 300 return (0); 301 302 bad: 303 scsipi_adapter_delref(adapt); 304 periph->periph_flags &= ~PERIPH_OPEN; 305 return (error); 306 } 307 308 static int 309 chclose(dev_t dev, int flags, int fmt, struct proc *p) 310 { 311 struct ch_softc *sc = ch_cd.cd_devs[CHUNIT(dev)]; 312 struct scsipi_periph *periph = sc->sc_periph; 313 struct scsipi_adapter *adapt = periph->periph_channel->chan_adapter; 314 315 scsipi_wait_drain(periph); 316 317 scsipi_adapter_delref(adapt); 318 319 sc->sc_events = 0; 320 321 periph->periph_flags &= ~PERIPH_OPEN; 322 return (0); 323 } 324 325 static int 326 chread(dev_t dev, struct uio *uio, int flags) 327 { 328 struct ch_softc *sc = ch_cd.cd_devs[CHUNIT(dev)]; 329 int error; 330 331 if (uio->uio_resid != CHANGER_EVENT_SIZE) 332 return (EINVAL); 333 334 /* 335 * Read never blocks; if there are no events pending, we just 336 * return an all-clear bitmask. 337 */ 338 error = uiomove(&sc->sc_events, CHANGER_EVENT_SIZE, uio); 339 if (error == 0) 340 sc->sc_events = 0; 341 return (error); 342 } 343 344 static int 345 chioctl(dev_t dev, u_long cmd, caddr_t data, int flags, struct proc *p) 346 { 347 struct ch_softc *sc = ch_cd.cd_devs[CHUNIT(dev)]; 348 int error = 0; 349 350 /* 351 * If this command can change the device's state, we must 352 * have the device open for writing. 353 */ 354 switch (cmd) { 355 case CHIOGPICKER: 356 case CHIOGPARAMS: 357 case OCHIOGSTATUS: 358 break; 359 360 default: 361 if ((flags & FWRITE) == 0) 362 return (EBADF); 363 } 364 365 switch (cmd) { 366 case CHIOMOVE: 367 error = ch_move(sc, (struct changer_move_request *)data); 368 break; 369 370 case CHIOEXCHANGE: 371 error = ch_exchange(sc, 372 (struct changer_exchange_request *)data); 373 break; 374 375 case CHIOPOSITION: 376 error = ch_position(sc, 377 (struct changer_position_request *)data); 378 break; 379 380 case CHIOGPICKER: 381 *(int *)data = sc->sc_picker - sc->sc_firsts[CHET_MT]; 382 break; 383 384 case CHIOSPICKER: 385 { 386 int new_picker = *(int *)data; 387 388 if (new_picker > (sc->sc_counts[CHET_MT] - 1)) 389 return (EINVAL); 390 sc->sc_picker = sc->sc_firsts[CHET_MT] + new_picker; 391 break; 392 } 393 394 case CHIOGPARAMS: 395 { 396 struct changer_params *cp = (struct changer_params *)data; 397 398 cp->cp_curpicker = sc->sc_picker - sc->sc_firsts[CHET_MT]; 399 cp->cp_npickers = sc->sc_counts[CHET_MT]; 400 cp->cp_nslots = sc->sc_counts[CHET_ST]; 401 cp->cp_nportals = sc->sc_counts[CHET_IE]; 402 cp->cp_ndrives = sc->sc_counts[CHET_DT]; 403 break; 404 } 405 406 case CHIOIELEM: 407 error = ch_ielem(sc); 408 if (error == 0) { 409 sc->sc_periph->periph_flags |= PERIPH_MEDIA_LOADED; 410 } 411 break; 412 413 case OCHIOGSTATUS: 414 { 415 struct ochanger_element_status_request *cesr = 416 (struct ochanger_element_status_request *)data; 417 418 error = ch_ousergetelemstatus(sc, cesr->cesr_type, 419 cesr->cesr_data); 420 break; 421 } 422 423 case CHIOGSTATUS: 424 error = ch_usergetelemstatus(sc, 425 (struct changer_element_status_request *)data); 426 break; 427 428 case CHIOSVOLTAG: 429 error = ch_setvoltag(sc, 430 (struct changer_set_voltag_request *)data); 431 break; 432 433 /* Implement prevent/allow? */ 434 435 default: 436 error = scsipi_do_ioctl(sc->sc_periph, dev, cmd, data, 437 flags, p); 438 break; 439 } 440 441 return (error); 442 } 443 444 static int 445 chpoll(dev_t dev, int events, struct proc *p) 446 { 447 struct ch_softc *sc = ch_cd.cd_devs[CHUNIT(dev)]; 448 int revents; 449 450 revents = events & (POLLOUT | POLLWRNORM); 451 452 if ((events & (POLLIN | POLLRDNORM)) == 0) 453 return (revents); 454 455 if (sc->sc_events == 0) 456 revents |= events & (POLLIN | POLLRDNORM); 457 else 458 selrecord(p, &sc->sc_selq); 459 460 return (revents); 461 } 462 463 static void 464 filt_chdetach(struct knote *kn) 465 { 466 struct ch_softc *sc = kn->kn_hook; 467 468 SLIST_REMOVE(&sc->sc_selq.sel_klist, kn, knote, kn_selnext); 469 } 470 471 static int 472 filt_chread(struct knote *kn, long hint) 473 { 474 struct ch_softc *sc = kn->kn_hook; 475 476 if (sc->sc_events == 0) 477 return (0); 478 kn->kn_data = CHANGER_EVENT_SIZE; 479 return (1); 480 } 481 482 static const struct filterops chread_filtops = 483 { 1, NULL, filt_chdetach, filt_chread }; 484 485 static const struct filterops chwrite_filtops = 486 { 1, NULL, filt_chdetach, filt_seltrue }; 487 488 static int 489 chkqfilter(dev_t dev, struct knote *kn) 490 { 491 struct ch_softc *sc = ch_cd.cd_devs[CHUNIT(dev)]; 492 struct klist *klist; 493 494 switch (kn->kn_filter) { 495 case EVFILT_READ: 496 klist = &sc->sc_selq.sel_klist; 497 kn->kn_fop = &chread_filtops; 498 break; 499 500 case EVFILT_WRITE: 501 klist = &sc->sc_selq.sel_klist; 502 kn->kn_fop = &chwrite_filtops; 503 break; 504 505 default: 506 return (1); 507 } 508 509 kn->kn_hook = sc; 510 511 SLIST_INSERT_HEAD(klist, kn, kn_selnext); 512 513 return (0); 514 } 515 516 static int 517 ch_interpret_sense(struct scsipi_xfer *xs) 518 { 519 struct scsipi_periph *periph = xs->xs_periph; 520 struct scsipi_sense_data *sense = &xs->sense.scsi_sense; 521 struct ch_softc *sc = (void *)periph->periph_dev; 522 u_int16_t asc_ascq; 523 524 /* 525 * If the periph is already recovering, just do the 526 * normal error recovering. 527 */ 528 if (periph->periph_flags & PERIPH_RECOVERING) 529 return (EJUSTRETURN); 530 531 /* 532 * If it isn't an extended or extended/deferred error, let 533 * the generic code handle it. 534 */ 535 if ((sense->error_code & SSD_ERRCODE) != 0x70 && 536 (sense->error_code & SSD_ERRCODE) != 0x71) 537 return (EJUSTRETURN); 538 539 /* 540 * We're only interested in condtions that 541 * indicate potential inventory violation. 542 * 543 * We use ASC/ASCQ codes for this. 544 */ 545 546 asc_ascq = (((u_int16_t) sense->add_sense_code) << 8) | 547 sense->add_sense_code_qual; 548 549 switch (asc_ascq) { 550 case 0x2800: 551 /* "Not Ready To Ready Transition (Medium May Have Changed)" */ 552 case 0x2900: 553 /* "Power On, Reset, or Bus Device Reset Occurred" */ 554 sc->sc_periph->periph_flags &= ~PERIPH_MEDIA_LOADED; 555 /* 556 * Enqueue an Element-Status-Changed event, and wake up 557 * any processes waiting for them. 558 */ 559 if ((xs->xs_control & XS_CTL_IGNORE_MEDIA_CHANGE) == 0) 560 ch_event(sc, CHEV_ELEMENT_STATUS_CHANGED); 561 break; 562 default: 563 break; 564 } 565 566 return (EJUSTRETURN); 567 } 568 569 static void 570 ch_event(struct ch_softc *sc, u_int event) 571 { 572 573 sc->sc_events |= event; 574 selnotify(&sc->sc_selq, 0); 575 } 576 577 static int 578 ch_move(struct ch_softc *sc, struct changer_move_request *cm) 579 { 580 struct scsi_move_medium cmd; 581 u_int16_t fromelem, toelem; 582 583 /* 584 * Check arguments. 585 */ 586 if ((cm->cm_fromtype > CHET_DT) || (cm->cm_totype > CHET_DT)) 587 return (EINVAL); 588 if ((cm->cm_fromunit > (sc->sc_counts[cm->cm_fromtype] - 1)) || 589 (cm->cm_tounit > (sc->sc_counts[cm->cm_totype] - 1))) 590 return (ENODEV); 591 592 /* 593 * Check the request against the changer's capabilities. 594 */ 595 if ((sc->sc_movemask[cm->cm_fromtype] & (1 << cm->cm_totype)) == 0) 596 return (ENODEV); 597 598 /* 599 * Calculate the source and destination elements. 600 */ 601 fromelem = sc->sc_firsts[cm->cm_fromtype] + cm->cm_fromunit; 602 toelem = sc->sc_firsts[cm->cm_totype] + cm->cm_tounit; 603 604 /* 605 * Build the SCSI command. 606 */ 607 memset(&cmd, 0, sizeof(cmd)); 608 cmd.opcode = MOVE_MEDIUM; 609 _lto2b(sc->sc_picker, cmd.tea); 610 _lto2b(fromelem, cmd.src); 611 _lto2b(toelem, cmd.dst); 612 if (cm->cm_flags & CM_INVERT) 613 cmd.flags |= MOVE_MEDIUM_INVERT; 614 615 /* 616 * Send command to changer. 617 */ 618 return (scsipi_command(sc->sc_periph, NULL, 619 (struct scsipi_generic *)&cmd, sizeof(cmd), NULL, 0, CHRETRIES, 620 100000, NULL, 0)); 621 } 622 623 static int 624 ch_exchange(struct ch_softc *sc, struct changer_exchange_request *ce) 625 { 626 struct scsi_exchange_medium cmd; 627 u_int16_t src, dst1, dst2; 628 629 /* 630 * Check arguments. 631 */ 632 if ((ce->ce_srctype > CHET_DT) || (ce->ce_fdsttype > CHET_DT) || 633 (ce->ce_sdsttype > CHET_DT)) 634 return (EINVAL); 635 if ((ce->ce_srcunit > (sc->sc_counts[ce->ce_srctype] - 1)) || 636 (ce->ce_fdstunit > (sc->sc_counts[ce->ce_fdsttype] - 1)) || 637 (ce->ce_sdstunit > (sc->sc_counts[ce->ce_sdsttype] - 1))) 638 return (ENODEV); 639 640 /* 641 * Check the request against the changer's capabilities. 642 */ 643 if (((sc->sc_exchangemask[ce->ce_srctype] & 644 (1 << ce->ce_fdsttype)) == 0) || 645 ((sc->sc_exchangemask[ce->ce_fdsttype] & 646 (1 << ce->ce_sdsttype)) == 0)) 647 return (ENODEV); 648 649 /* 650 * Calculate the source and destination elements. 651 */ 652 src = sc->sc_firsts[ce->ce_srctype] + ce->ce_srcunit; 653 dst1 = sc->sc_firsts[ce->ce_fdsttype] + ce->ce_fdstunit; 654 dst2 = sc->sc_firsts[ce->ce_sdsttype] + ce->ce_sdstunit; 655 656 /* 657 * Build the SCSI command. 658 */ 659 memset(&cmd, 0, sizeof(cmd)); 660 cmd.opcode = EXCHANGE_MEDIUM; 661 _lto2b(sc->sc_picker, cmd.tea); 662 _lto2b(src, cmd.src); 663 _lto2b(dst1, cmd.fdst); 664 _lto2b(dst2, cmd.sdst); 665 if (ce->ce_flags & CE_INVERT1) 666 cmd.flags |= EXCHANGE_MEDIUM_INV1; 667 if (ce->ce_flags & CE_INVERT2) 668 cmd.flags |= EXCHANGE_MEDIUM_INV2; 669 670 /* 671 * Send command to changer. 672 */ 673 return (scsipi_command(sc->sc_periph, NULL, 674 (struct scsipi_generic *)&cmd, sizeof(cmd), NULL, 0, CHRETRIES, 675 100000, NULL, 0)); 676 } 677 678 static int 679 ch_position(struct ch_softc *sc, struct changer_position_request *cp) 680 { 681 struct scsi_position_to_element cmd; 682 u_int16_t dst; 683 684 /* 685 * Check arguments. 686 */ 687 if (cp->cp_type > CHET_DT) 688 return (EINVAL); 689 if (cp->cp_unit > (sc->sc_counts[cp->cp_type] - 1)) 690 return (ENODEV); 691 692 /* 693 * Calculate the destination element. 694 */ 695 dst = sc->sc_firsts[cp->cp_type] + cp->cp_unit; 696 697 /* 698 * Build the SCSI command. 699 */ 700 memset(&cmd, 0, sizeof(cmd)); 701 cmd.opcode = POSITION_TO_ELEMENT; 702 _lto2b(sc->sc_picker, cmd.tea); 703 _lto2b(dst, cmd.dst); 704 if (cp->cp_flags & CP_INVERT) 705 cmd.flags |= POSITION_TO_ELEMENT_INVERT; 706 707 /* 708 * Send command to changer. 709 */ 710 return (scsipi_command(sc->sc_periph, NULL, 711 (struct scsipi_generic *)&cmd, sizeof(cmd), NULL, 0, CHRETRIES, 712 100000, NULL, 0)); 713 } 714 715 /* 716 * Perform a READ ELEMENT STATUS on behalf of the user, and return to 717 * the user only the data the user is interested in. This returns the 718 * old data format. 719 */ 720 static int 721 ch_ousergetelemstatus(struct ch_softc *sc, int chet, u_int8_t *uptr) 722 { 723 struct read_element_status_header *st_hdrp, st_hdr; 724 struct read_element_status_page_header *pg_hdrp; 725 struct read_element_status_descriptor *desc; 726 size_t size, desclen; 727 caddr_t data; 728 int avail, i, error = 0; 729 u_int8_t user_data; 730 731 /* 732 * If there are no elements of the requested type in the changer, 733 * the request is invalid. 734 */ 735 if (sc->sc_counts[chet] == 0) 736 return (EINVAL); 737 738 /* 739 * Do the request the user wants, but only read the status header. 740 * This will tell us the amount of storage we must allocate in 741 * order to read all data. 742 */ 743 error = ch_getelemstatus(sc, sc->sc_firsts[chet], 744 sc->sc_counts[chet], &st_hdr, sizeof(st_hdr), 745 XS_CTL_DATA_ONSTACK, 0); 746 if (error) 747 return (error); 748 749 size = sizeof(struct read_element_status_header) + 750 _3btol(st_hdr.nbytes); 751 752 /* 753 * We must have at least room for the status header and 754 * one page header (since we only ask for one element type 755 * at a time). 756 */ 757 if (size < (sizeof(struct read_element_status_header) + 758 sizeof(struct read_element_status_page_header))) 759 return (EIO); 760 761 /* 762 * Allocate the storage and do the request again. 763 */ 764 data = malloc(size, M_DEVBUF, M_WAITOK); 765 error = ch_getelemstatus(sc, sc->sc_firsts[chet], 766 sc->sc_counts[chet], data, size, 0, 0); 767 if (error) 768 goto done; 769 770 st_hdrp = (struct read_element_status_header *)data; 771 pg_hdrp = (struct read_element_status_page_header *)((u_long)st_hdrp + 772 sizeof(struct read_element_status_header)); 773 desclen = _2btol(pg_hdrp->edl); 774 775 /* 776 * Fill in the user status array. 777 */ 778 avail = _2btol(st_hdrp->count); 779 780 if (avail != sc->sc_counts[chet]) 781 printf("%s: warning, READ ELEMENT STATUS avail != count\n", 782 sc->sc_dev.dv_xname); 783 784 desc = (struct read_element_status_descriptor *)((u_long)data + 785 sizeof(struct read_element_status_header) + 786 sizeof(struct read_element_status_page_header)); 787 for (i = 0; i < avail; ++i) { 788 user_data = desc->flags1; 789 error = copyout(&user_data, &uptr[i], avail); 790 if (error) 791 break; 792 desc = (struct read_element_status_descriptor *)((u_long)desc 793 + desclen); 794 } 795 796 done: 797 if (data != NULL) 798 free(data, M_DEVBUF); 799 return (error); 800 } 801 802 /* 803 * Perform a READ ELEMENT STATUS on behalf of the user. This returns 804 * the new (more complete) data format. 805 */ 806 static int 807 ch_usergetelemstatus(struct ch_softc *sc, 808 struct changer_element_status_request *cesr) 809 { 810 struct scsipi_channel *chan = sc->sc_periph->periph_channel; 811 struct scsipi_periph *dtperiph; 812 struct read_element_status_header *st_hdrp, st_hdr; 813 struct read_element_status_page_header *pg_hdrp; 814 struct read_element_status_descriptor *desc; 815 struct changer_volume_tag *avol, *pvol; 816 size_t size, desclen, stddesclen, offset; 817 int first, avail, i, error = 0; 818 caddr_t data; 819 void *uvendptr; 820 struct changer_element_status ces; 821 822 /* 823 * Check arguments. 824 */ 825 if (cesr->cesr_type > CHET_DT) 826 return (EINVAL); 827 if (sc->sc_counts[cesr->cesr_type] == 0) 828 return (ENODEV); 829 if (cesr->cesr_unit > (sc->sc_counts[cesr->cesr_type] - 1)) 830 return (ENODEV); 831 if (cesr->cesr_count > 832 (sc->sc_counts[cesr->cesr_type] + cesr->cesr_unit)) 833 return (EINVAL); 834 835 /* 836 * Do the request the user wants, but only read the status header. 837 * This will tell us the amount of storage we must allocate 838 * in order to read all the data. 839 */ 840 error = ch_getelemstatus(sc, sc->sc_firsts[cesr->cesr_type] + 841 cesr->cesr_unit, cesr->cesr_count, &st_hdr, sizeof(st_hdr), 0, 842 cesr->cesr_flags); 843 if (error) 844 return (error); 845 846 size = sizeof(struct read_element_status_header) + 847 _3btol(st_hdr.nbytes); 848 849 /* 850 * We must have at least room for the status header and 851 * one page header (since we only ask for oen element type 852 * at a time). 853 */ 854 if (size < (sizeof(struct read_element_status_header) + 855 sizeof(struct read_element_status_page_header))) 856 return (EIO); 857 858 /* 859 * Allocate the storage and do the request again. 860 */ 861 data = malloc(size, M_DEVBUF, M_WAITOK); 862 error = ch_getelemstatus(sc, sc->sc_firsts[cesr->cesr_type] + 863 cesr->cesr_unit, cesr->cesr_count, data, size, 0, 864 cesr->cesr_flags); 865 if (error) 866 goto done; 867 868 st_hdrp = (struct read_element_status_header *)data; 869 pg_hdrp = (struct read_element_status_page_header *)((u_long)st_hdrp + 870 sizeof(struct read_element_status_header)); 871 desclen = _2btol(pg_hdrp->edl); 872 873 /* 874 * Fill in the user status array. 875 */ 876 first = _2btol(st_hdrp->fear); 877 if (first < (sc->sc_firsts[cesr->cesr_type] + cesr->cesr_unit) || 878 first >= (sc->sc_firsts[cesr->cesr_type] + cesr->cesr_unit + 879 cesr->cesr_count)) { 880 error = EIO; 881 goto done; 882 } 883 first -= sc->sc_firsts[cesr->cesr_type] + cesr->cesr_unit; 884 885 avail = _2btol(st_hdrp->count); 886 if (avail <= 0 || avail > cesr->cesr_count) { 887 error = EIO; 888 goto done; 889 } 890 891 offset = sizeof(struct read_element_status_header) + 892 sizeof(struct read_element_status_page_header); 893 894 for (i = 0; i < cesr->cesr_count; i++) { 895 memset(&ces, 0, sizeof(ces)); 896 if (i < first || i >= (first + avail)) { 897 error = copyout(&ces, &cesr->cesr_data[i], 898 sizeof(ces)); 899 if (error) 900 goto done; 901 } 902 903 desc = (struct read_element_status_descriptor *) 904 (data + offset); 905 stddesclen = sizeof(struct read_element_status_descriptor); 906 offset += desclen; 907 908 ces.ces_flags = CESTATUS_STATUS_VALID; 909 910 /* 911 * The SCSI flags conveniently map directly to the 912 * chio API flags. 913 */ 914 ces.ces_flags |= (desc->flags1 & 0x3f); 915 916 ces.ces_asc = desc->sense_code; 917 ces.ces_ascq = desc->sense_qual; 918 919 /* 920 * For Data Transport elemenets, get the SCSI ID and LUN, 921 * and attempt to map them to a device name if they're 922 * on the same SCSI bus. 923 */ 924 if (desc->dt_scsi_flags & READ_ELEMENT_STATUS_DT_IDVALID) { 925 ces.ces_target = desc->dt_scsi_addr; 926 ces.ces_flags |= CESTATUS_TARGET_VALID; 927 } 928 if (desc->dt_scsi_flags & READ_ELEMENT_STATUS_DT_LUVALID) { 929 ces.ces_lun = desc->dt_scsi_flags & 930 READ_ELEMENT_STATUS_DT_LUNMASK; 931 ces.ces_flags |= CESTATUS_LUN_VALID; 932 } 933 if (desc->dt_scsi_flags & READ_ELEMENT_STATUS_DT_NOTBUS) 934 ces.ces_flags |= CESTATUS_NOTBUS; 935 else if ((ces.ces_flags & 936 (CESTATUS_TARGET_VALID|CESTATUS_LUN_VALID)) == 937 (CESTATUS_TARGET_VALID|CESTATUS_LUN_VALID)) { 938 if (ces.ces_target < chan->chan_ntargets && 939 ces.ces_lun < chan->chan_nluns && 940 (dtperiph = scsipi_lookup_periph(chan, 941 ces.ces_target, ces.ces_lun)) != NULL && 942 dtperiph->periph_dev != NULL) { 943 strlcpy(ces.ces_xname, 944 dtperiph->periph_dev->dv_xname, 945 sizeof(ces.ces_xname)); 946 ces.ces_flags |= CESTATUS_XNAME_VALID; 947 } 948 } 949 950 if (desc->flags2 & READ_ELEMENT_STATUS_INVERT) 951 ces.ces_flags |= CESTATUS_INVERTED; 952 953 if (desc->flags2 & READ_ELEMENT_STATUS_SVALID) { 954 if (ch_map_element(sc, _2btol(desc->ssea), 955 &ces.ces_from_type, &ces.ces_from_unit)) 956 ces.ces_flags |= CESTATUS_FROM_VALID; 957 } 958 959 /* 960 * Extract volume tag information. 961 */ 962 switch (pg_hdrp->flags & 963 (READ_ELEMENT_STATUS_PVOLTAG|READ_ELEMENT_STATUS_AVOLTAG)) { 964 case (READ_ELEMENT_STATUS_PVOLTAG|READ_ELEMENT_STATUS_AVOLTAG): 965 pvol = (struct changer_volume_tag *)(desc + 1); 966 avol = pvol + 1; 967 break; 968 969 case READ_ELEMENT_STATUS_PVOLTAG: 970 pvol = (struct changer_volume_tag *)(desc + 1); 971 avol = NULL; 972 break; 973 974 case READ_ELEMENT_STATUS_AVOLTAG: 975 pvol = NULL; 976 avol = (struct changer_volume_tag *)(desc + 1); 977 break; 978 979 default: 980 avol = pvol = NULL; 981 break; 982 } 983 984 if (pvol != NULL) { 985 ch_voltag_convert_in(pvol, &ces.ces_pvoltag); 986 ces.ces_flags |= CESTATUS_PVOL_VALID; 987 stddesclen += sizeof(struct changer_volume_tag); 988 } 989 if (avol != NULL) { 990 ch_voltag_convert_in(avol, &ces.ces_avoltag); 991 ces.ces_flags |= CESTATUS_AVOL_VALID; 992 stddesclen += sizeof(struct changer_volume_tag); 993 } 994 995 /* 996 * Compute vendor-specific length. Note the 4 reserved 997 * bytes between the volume tags and the vendor-specific 998 * data. Copy it out of the user wants it. 999 */ 1000 stddesclen += 4; 1001 if (desclen > stddesclen) 1002 ces.ces_vendor_len = desclen - stddesclen; 1003 1004 if (ces.ces_vendor_len != 0 && cesr->cesr_vendor_data != NULL) { 1005 error = copyin(&cesr->cesr_vendor_data[i], &uvendptr, 1006 sizeof(uvendptr)); 1007 if (error) 1008 goto done; 1009 error = copyout((void *)((u_long)desc + stddesclen), 1010 uvendptr, ces.ces_vendor_len); 1011 if (error) 1012 goto done; 1013 } 1014 1015 /* 1016 * Now copy out the status descriptor we've constructed. 1017 */ 1018 error = copyout(&ces, &cesr->cesr_data[i], sizeof(ces)); 1019 if (error) 1020 goto done; 1021 } 1022 1023 done: 1024 if (data != NULL) 1025 free(data, M_DEVBUF); 1026 return (error); 1027 } 1028 1029 static int 1030 ch_getelemstatus(struct ch_softc *sc, int first, int count, void *data, 1031 size_t datalen, int scsiflags, int flags) 1032 { 1033 struct scsi_read_element_status cmd; 1034 1035 /* 1036 * Build SCSI command. 1037 */ 1038 memset(&cmd, 0, sizeof(cmd)); 1039 cmd.opcode = READ_ELEMENT_STATUS; 1040 cmd.byte2 = ELEMENT_TYPE_ALL; 1041 if (flags & CESR_VOLTAGS) 1042 cmd.byte2 |= READ_ELEMENT_STATUS_VOLTAG; 1043 _lto2b(first, cmd.sea); 1044 _lto2b(count, cmd.count); 1045 _lto3b(datalen, cmd.len); 1046 1047 /* 1048 * Send command to changer. 1049 */ 1050 return (scsipi_command(sc->sc_periph, NULL, 1051 (struct scsipi_generic *)&cmd, sizeof(cmd), 1052 (u_char *)data, datalen, CHRETRIES, 100000, NULL, 1053 scsiflags | XS_CTL_DATA_IN)); 1054 } 1055 1056 static int 1057 ch_setvoltag(struct ch_softc *sc, struct changer_set_voltag_request *csvr) 1058 { 1059 struct scsi_send_volume_tag cmd; 1060 struct changer_volume_tag voltag; 1061 void *data = NULL; 1062 size_t datalen = 0; 1063 int error; 1064 u_int16_t dst; 1065 1066 /* 1067 * Check arguments. 1068 */ 1069 if (csvr->csvr_type > CHET_DT) 1070 return (EINVAL); 1071 if (csvr->csvr_unit > (sc->sc_counts[csvr->csvr_type] - 1)) 1072 return (ENODEV); 1073 1074 dst = sc->sc_firsts[csvr->csvr_type] + csvr->csvr_unit; 1075 1076 /* 1077 * Build the SCSI command. 1078 */ 1079 memset(&cmd, 0, sizeof(cmd)); 1080 cmd.opcode = SEND_VOLUME_TAG; 1081 _lto2b(dst, cmd.eaddr); 1082 1083 #define ALTERNATE (csvr->csvr_flags & CSVR_ALTERNATE) 1084 1085 switch (csvr->csvr_flags & CSVR_MODE_MASK) { 1086 case CSVR_MODE_SET: 1087 cmd.sac = ALTERNATE ? SAC_ASSERT_ALT : SAC_ASSERT_PRIMARY; 1088 break; 1089 1090 case CSVR_MODE_REPLACE: 1091 cmd.sac = ALTERNATE ? SAC_REPLACE_ALT : SAC_REPLACE_PRIMARY; 1092 break; 1093 1094 case CSVR_MODE_CLEAR: 1095 cmd.sac = ALTERNATE ? SAC_UNDEFINED_ALT : SAC_UNDEFINED_PRIMARY; 1096 break; 1097 1098 default: 1099 return (EINVAL); 1100 } 1101 1102 #undef ALTERNATE 1103 1104 if (cmd.sac < SAC_UNDEFINED_PRIMARY) { 1105 error = ch_voltag_convert_out(&csvr->csvr_voltag, &voltag); 1106 if (error) 1107 return (error); 1108 data = &voltag; 1109 datalen = sizeof(voltag); 1110 _lto2b(datalen, cmd.length); 1111 } 1112 1113 /* 1114 * Send command to changer. 1115 */ 1116 return (scsipi_command(sc->sc_periph, NULL, 1117 (struct scsipi_generic *)&cmd, sizeof(cmd), 1118 (u_char *)data, datalen, CHRETRIES, 100000, NULL, 1119 datalen ? XS_CTL_DATA_OUT | XS_CTL_DATA_ONSTACK : 0)); 1120 } 1121 1122 static int 1123 ch_ielem(struct ch_softc *sc) 1124 { 1125 int tmo; 1126 struct scsi_initialize_element_status cmd; 1127 1128 /* 1129 * Build SCSI command. 1130 */ 1131 memset(&cmd, 0, sizeof(cmd)); 1132 cmd.opcode = INITIALIZE_ELEMENT_STATUS; 1133 1134 /* 1135 * Send command to changer. 1136 * 1137 * The problem is, how long to allow for the command? 1138 * It can take a *really* long time, and also depends 1139 * on unknowable factors such as whether there are 1140 * *almost* readable labels on tapes that a barcode 1141 * reader is trying to decipher. 1142 * 1143 * I'm going to make this long enough to allow 5 minutes 1144 * per element plus an initial 10 minute wait. 1145 */ 1146 tmo = sc->sc_counts[CHET_MT] + 1147 sc->sc_counts[CHET_ST] + 1148 sc->sc_counts[CHET_IE] + 1149 sc->sc_counts[CHET_DT]; 1150 tmo *= 5 * 60 * 1000; 1151 tmo += (10 * 60 * 1000); 1152 1153 return (scsipi_command(sc->sc_periph, NULL, 1154 (struct scsipi_generic *)&cmd, sizeof(cmd), 1155 NULL, 0, CHRETRIES, tmo, NULL, XS_CTL_IGNORE_ILLEGAL_REQUEST)); 1156 } 1157 1158 /* 1159 * Ask the device about itself and fill in the parameters in our 1160 * softc. 1161 */ 1162 static int 1163 ch_get_params(struct ch_softc *sc, int scsiflags) 1164 { 1165 struct scsi_mode_sense_data { 1166 struct scsipi_mode_header header; 1167 union { 1168 struct page_element_address_assignment ea; 1169 struct page_transport_geometry_parameters tg; 1170 struct page_device_capabilities cap; 1171 } pages; 1172 } sense_data; 1173 int error, from; 1174 u_int8_t *moves, *exchanges; 1175 1176 /* 1177 * Grab info from the element address assignment page. 1178 */ 1179 memset(&sense_data, 0, sizeof(sense_data)); 1180 error = scsipi_mode_sense(sc->sc_periph, SMS_DBD, 0x1d, 1181 &sense_data.header, sizeof(sense_data), 1182 scsiflags | XS_CTL_DATA_ONSTACK, CHRETRIES, 6000); 1183 if (error) { 1184 printf("%s: could not sense element address page\n", 1185 sc->sc_dev.dv_xname); 1186 return (error); 1187 } 1188 1189 sc->sc_firsts[CHET_MT] = _2btol(sense_data.pages.ea.mtea); 1190 sc->sc_counts[CHET_MT] = _2btol(sense_data.pages.ea.nmte); 1191 sc->sc_firsts[CHET_ST] = _2btol(sense_data.pages.ea.fsea); 1192 sc->sc_counts[CHET_ST] = _2btol(sense_data.pages.ea.nse); 1193 sc->sc_firsts[CHET_IE] = _2btol(sense_data.pages.ea.fieea); 1194 sc->sc_counts[CHET_IE] = _2btol(sense_data.pages.ea.niee); 1195 sc->sc_firsts[CHET_DT] = _2btol(sense_data.pages.ea.fdtea); 1196 sc->sc_counts[CHET_DT] = _2btol(sense_data.pages.ea.ndte); 1197 1198 /* XXX ask for transport geometry page XXX */ 1199 1200 /* 1201 * Grab info from the capabilities page. 1202 */ 1203 memset(&sense_data, 0, sizeof(sense_data)); 1204 /* 1205 * XXX: Note: not all changers can deal with disabled block descriptors 1206 */ 1207 error = scsipi_mode_sense(sc->sc_periph, SMS_DBD, 0x1f, 1208 &sense_data.header, sizeof(sense_data), 1209 scsiflags | XS_CTL_DATA_ONSTACK, CHRETRIES, 6000); 1210 if (error) { 1211 printf("%s: could not sense capabilities page\n", 1212 sc->sc_dev.dv_xname); 1213 return (error); 1214 } 1215 1216 memset(sc->sc_movemask, 0, sizeof(sc->sc_movemask)); 1217 memset(sc->sc_exchangemask, 0, sizeof(sc->sc_exchangemask)); 1218 moves = &sense_data.pages.cap.move_from_mt; 1219 exchanges = &sense_data.pages.cap.exchange_with_mt; 1220 for (from = CHET_MT; from <= CHET_DT; ++from) { 1221 sc->sc_movemask[from] = moves[from]; 1222 sc->sc_exchangemask[from] = exchanges[from]; 1223 } 1224 1225 #ifdef CH_AUTOMATIC_IELEM_POLICY 1226 /* 1227 * If we need to do an Init-Element-Status, 1228 * do that now that we know what's in the changer. 1229 */ 1230 if ((scsiflags & XS_CTL_IGNORE_MEDIA_CHANGE) == 0) { 1231 if ((sc->sc_periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1232 error = ch_ielem(sc); 1233 if (error == 0) 1234 sc->sc_periph->periph_flags |= PERIPH_MEDIA_LOADED; 1235 else 1236 sc->sc_periph->periph_flags &= ~PERIPH_MEDIA_LOADED; 1237 } 1238 #endif 1239 return (error); 1240 } 1241 1242 static void 1243 ch_get_quirks(struct ch_softc *sc, struct scsipi_inquiry_pattern *inqbuf) 1244 { 1245 struct chquirk *match; 1246 int priority; 1247 1248 sc->sc_settledelay = 0; 1249 1250 match = (struct chquirk *)scsipi_inqmatch(inqbuf, 1251 (caddr_t)chquirks, 1252 sizeof(chquirks) / sizeof(chquirks[0]), 1253 sizeof(chquirks[0]), &priority); 1254 if (priority != 0) 1255 sc->sc_settledelay = match->cq_settledelay; 1256 } 1257 1258 static int 1259 ch_map_element(struct ch_softc *sc, u_int16_t elem, int *typep, int *unitp) 1260 { 1261 int chet; 1262 1263 for (chet = CHET_MT; chet <= CHET_DT; chet++) { 1264 if (elem >= sc->sc_firsts[chet] && 1265 elem < (sc->sc_firsts[chet] + sc->sc_counts[chet])) { 1266 *typep = chet; 1267 *unitp = elem - sc->sc_firsts[chet]; 1268 return (1); 1269 } 1270 } 1271 return (0); 1272 } 1273 1274 static void 1275 ch_voltag_convert_in(const struct changer_volume_tag *sv, 1276 struct changer_voltag *cv) 1277 { 1278 int i; 1279 1280 memset(cv, 0, sizeof(struct changer_voltag)); 1281 1282 /* 1283 * Copy the volume tag string from the SCSI representation. 1284 * Per the SCSI-2 spec, we stop at the first blank character. 1285 */ 1286 for (i = 0; i < sizeof(sv->volid); i++) { 1287 if (sv->volid[i] == ' ') 1288 break; 1289 cv->cv_tag[i] = sv->volid[i]; 1290 } 1291 cv->cv_tag[i] = '\0'; 1292 1293 cv->cv_serial = _2btol(sv->volseq); 1294 } 1295 1296 static int 1297 ch_voltag_convert_out(const struct changer_voltag *cv, 1298 struct changer_volume_tag *sv) 1299 { 1300 int i; 1301 1302 memset(sv, ' ', sizeof(struct changer_volume_tag)); 1303 1304 for (i = 0; i < sizeof(sv->volid); i++) { 1305 if (cv->cv_tag[i] == '\0') 1306 break; 1307 /* 1308 * Limit the character set to what is suggested in 1309 * the SCSI-2 spec. 1310 */ 1311 if ((cv->cv_tag[i] < '0' || cv->cv_tag[i] > '9') && 1312 (cv->cv_tag[i] < 'A' || cv->cv_tag[i] > 'Z') && 1313 (cv->cv_tag[i] != '_')) 1314 return (EINVAL); 1315 sv->volid[i] = cv->cv_tag[i]; 1316 } 1317 1318 _lto2b(cv->cv_serial, sv->volseq); 1319 1320 return (0); 1321 } 1322