1 /* $NetBSD: ch.c,v 1.55 2002/11/26 18:49:47 christos 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 1.55 2002/11/26 18:49:47 christos 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 int chmatch __P((struct device *, struct cfdata *, void *)); 110 void chattach __P((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 struct scsipi_inquiry_pattern ch_patterns[] = { 118 {T_CHANGER, T_REMOV, 119 "", "", ""}, 120 }; 121 122 dev_type_open(chopen); 123 dev_type_close(chclose); 124 dev_type_read(chread); 125 dev_type_ioctl(chioctl); 126 dev_type_poll(chpoll); 127 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 int ch_interpret_sense __P((struct scsipi_xfer *)); 136 137 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 int ch_move __P((struct ch_softc *, struct changer_move_request *)); 145 int ch_exchange __P((struct ch_softc *, struct changer_exchange_request *)); 146 int ch_position __P((struct ch_softc *, struct changer_position_request *)); 147 int ch_ielem __P((struct ch_softc *)); 148 int ch_ousergetelemstatus __P((struct ch_softc *, int, u_int8_t *)); 149 int ch_usergetelemstatus __P((struct ch_softc *, 150 struct changer_element_status_request *)); 151 int ch_getelemstatus __P((struct ch_softc *, int, int, void *, 152 size_t, int, int)); 153 int ch_setvoltag __P((struct ch_softc *, 154 struct changer_set_voltag_request *)); 155 int ch_get_params __P((struct ch_softc *, int)); 156 void ch_get_quirks __P((struct ch_softc *, 157 struct scsipi_inquiry_pattern *)); 158 void ch_event __P((struct ch_softc *, u_int)); 159 int ch_map_element __P((struct ch_softc *, u_int16_t, int *, int *)); 160 161 void ch_voltag_convert_in __P((const struct changer_volume_tag *, 162 struct changer_voltag *)); 163 int ch_voltag_convert_out __P((const struct changer_voltag *, 164 struct changer_volume_tag *)); 165 166 /* 167 * SCSI changer quirks. 168 */ 169 struct chquirk { 170 struct scsipi_inquiry_pattern cq_match; /* device id pattern */ 171 int cq_settledelay; /* settle delay, in seconds */ 172 }; 173 174 struct chquirk chquirks[] = { 175 {{T_CHANGER, T_REMOV, 176 "SPECTRA", "9000", "0200"}, 177 75}, 178 }; 179 180 int 181 chmatch(parent, match, aux) 182 struct device *parent; 183 struct cfdata *match; 184 void *aux; 185 { 186 struct scsipibus_attach_args *sa = aux; 187 int priority; 188 189 (void)scsipi_inqmatch(&sa->sa_inqbuf, 190 (caddr_t)ch_patterns, sizeof(ch_patterns) / sizeof(ch_patterns[0]), 191 sizeof(ch_patterns[0]), &priority); 192 193 return (priority); 194 } 195 196 void 197 chattach(parent, self, aux) 198 struct device *parent, *self; 199 void *aux; 200 { 201 struct ch_softc *sc = (struct ch_softc *)self; 202 struct scsipibus_attach_args *sa = aux; 203 struct scsipi_periph *periph = sa->sa_periph; 204 205 /* Glue into the SCSI bus */ 206 sc->sc_periph = periph; 207 periph->periph_dev = &sc->sc_dev; 208 periph->periph_switch = &ch_switch; 209 210 printf("\n"); 211 212 /* 213 * Find out our device's quirks. 214 */ 215 ch_get_quirks(sc, &sa->sa_inqbuf); 216 217 /* 218 * Some changers require a long time to settle out, to do 219 * tape inventory, for instance. 220 */ 221 if (sc->sc_settledelay) { 222 printf("%s: waiting %d seconds for changer to settle...\n", 223 sc->sc_dev.dv_xname, sc->sc_settledelay); 224 delay(1000000 * sc->sc_settledelay); 225 } 226 227 /* 228 * Get information about the device. Note we can't use 229 * interrupts yet. 230 */ 231 if (ch_get_params(sc, XS_CTL_DISCOVERY|XS_CTL_IGNORE_MEDIA_CHANGE)) 232 printf("%s: offline\n", sc->sc_dev.dv_xname); 233 else { 234 #define PLURAL(c) (c) == 1 ? "" : "s" 235 printf("%s: %d slot%s, %d drive%s, %d picker%s, %d portal%s\n", 236 sc->sc_dev.dv_xname, 237 sc->sc_counts[CHET_ST], PLURAL(sc->sc_counts[CHET_ST]), 238 sc->sc_counts[CHET_DT], PLURAL(sc->sc_counts[CHET_DT]), 239 sc->sc_counts[CHET_MT], PLURAL(sc->sc_counts[CHET_MT]), 240 sc->sc_counts[CHET_IE], PLURAL(sc->sc_counts[CHET_IE])); 241 #undef PLURAL 242 #ifdef CHANGER_DEBUG 243 printf("%s: move mask: 0x%x 0x%x 0x%x 0x%x\n", 244 sc->sc_dev.dv_xname, 245 sc->sc_movemask[CHET_MT], sc->sc_movemask[CHET_ST], 246 sc->sc_movemask[CHET_IE], sc->sc_movemask[CHET_DT]); 247 printf("%s: exchange mask: 0x%x 0x%x 0x%x 0x%x\n", 248 sc->sc_dev.dv_xname, 249 sc->sc_exchangemask[CHET_MT], sc->sc_exchangemask[CHET_ST], 250 sc->sc_exchangemask[CHET_IE], sc->sc_exchangemask[CHET_DT]); 251 #endif /* CHANGER_DEBUG */ 252 } 253 254 /* Default the current picker. */ 255 sc->sc_picker = sc->sc_firsts[CHET_MT]; 256 } 257 258 int 259 chopen(dev, flags, fmt, p) 260 dev_t dev; 261 int flags, fmt; 262 struct proc *p; 263 { 264 struct ch_softc *sc; 265 struct scsipi_periph *periph; 266 struct scsipi_adapter *adapt; 267 int unit, error; 268 269 unit = CHUNIT(dev); 270 if ((unit >= ch_cd.cd_ndevs) || 271 ((sc = ch_cd.cd_devs[unit]) == NULL)) 272 return (ENXIO); 273 274 periph = sc->sc_periph; 275 adapt = periph->periph_channel->chan_adapter; 276 277 /* 278 * Only allow one open at a time. 279 */ 280 if (periph->periph_flags & PERIPH_OPEN) 281 return (EBUSY); 282 283 if ((error = scsipi_adapter_addref(adapt)) != 0) 284 return (error); 285 286 /* 287 * Make sure the unit is on-line. If a UNIT ATTENTION 288 * occurs, we will mark that an Init-Element-Status is 289 * needed in ch_get_params(). 290 * 291 * We ignore NOT READY in case e.g a magazine isn't actually 292 * loaded into the changer or a tape isn't in the drive. 293 */ 294 error = scsipi_test_unit_ready(periph, XS_CTL_IGNORE_NOT_READY); 295 if (error) 296 goto bad; 297 298 periph->periph_flags |= PERIPH_OPEN; 299 300 /* 301 * Make sure our parameters are up to date. 302 */ 303 if ((error = ch_get_params(sc, 0)) != 0) 304 goto bad; 305 306 return (0); 307 308 bad: 309 scsipi_adapter_delref(adapt); 310 periph->periph_flags &= ~PERIPH_OPEN; 311 return (error); 312 } 313 314 int 315 chclose(dev, flags, fmt, p) 316 dev_t dev; 317 int flags, fmt; 318 struct proc *p; 319 { 320 struct ch_softc *sc = ch_cd.cd_devs[CHUNIT(dev)]; 321 struct scsipi_periph *periph = sc->sc_periph; 322 struct scsipi_adapter *adapt = periph->periph_channel->chan_adapter; 323 324 scsipi_wait_drain(periph); 325 326 scsipi_adapter_delref(adapt); 327 328 sc->sc_events = 0; 329 330 periph->periph_flags &= ~PERIPH_OPEN; 331 return (0); 332 } 333 334 int 335 chread(dev, uio, flags) 336 dev_t dev; 337 struct uio *uio; 338 int flags; 339 { 340 struct ch_softc *sc = ch_cd.cd_devs[CHUNIT(dev)]; 341 int error; 342 343 if (uio->uio_resid != CHANGER_EVENT_SIZE) 344 return (EINVAL); 345 346 /* 347 * Read never blocks; if there are no events pending, we just 348 * return an all-clear bitmask. 349 */ 350 error = uiomove(&sc->sc_events, CHANGER_EVENT_SIZE, uio); 351 if (error == 0) 352 sc->sc_events = 0; 353 return (error); 354 } 355 356 int 357 chioctl(dev, cmd, data, flags, p) 358 dev_t dev; 359 u_long cmd; 360 caddr_t data; 361 int flags; 362 struct proc *p; 363 { 364 struct ch_softc *sc = ch_cd.cd_devs[CHUNIT(dev)]; 365 int error = 0; 366 367 /* 368 * If this command can change the device's state, we must 369 * have the device open for writing. 370 */ 371 switch (cmd) { 372 case CHIOGPICKER: 373 case CHIOGPARAMS: 374 case OCHIOGSTATUS: 375 break; 376 377 default: 378 if ((flags & FWRITE) == 0) 379 return (EBADF); 380 } 381 382 switch (cmd) { 383 case CHIOMOVE: 384 error = ch_move(sc, (struct changer_move_request *)data); 385 break; 386 387 case CHIOEXCHANGE: 388 error = ch_exchange(sc, 389 (struct changer_exchange_request *)data); 390 break; 391 392 case CHIOPOSITION: 393 error = ch_position(sc, 394 (struct changer_position_request *)data); 395 break; 396 397 case CHIOGPICKER: 398 *(int *)data = sc->sc_picker - sc->sc_firsts[CHET_MT]; 399 break; 400 401 case CHIOSPICKER: 402 { 403 int new_picker = *(int *)data; 404 405 if (new_picker > (sc->sc_counts[CHET_MT] - 1)) 406 return (EINVAL); 407 sc->sc_picker = sc->sc_firsts[CHET_MT] + new_picker; 408 break; 409 } 410 411 case CHIOGPARAMS: 412 { 413 struct changer_params *cp = (struct changer_params *)data; 414 415 cp->cp_curpicker = sc->sc_picker - sc->sc_firsts[CHET_MT]; 416 cp->cp_npickers = sc->sc_counts[CHET_MT]; 417 cp->cp_nslots = sc->sc_counts[CHET_ST]; 418 cp->cp_nportals = sc->sc_counts[CHET_IE]; 419 cp->cp_ndrives = sc->sc_counts[CHET_DT]; 420 break; 421 } 422 423 case CHIOIELEM: 424 error = ch_ielem(sc); 425 if (error == 0) { 426 sc->sc_periph->periph_flags |= PERIPH_MEDIA_LOADED; 427 } 428 break; 429 430 case OCHIOGSTATUS: 431 { 432 struct ochanger_element_status_request *cesr = 433 (struct ochanger_element_status_request *)data; 434 435 error = ch_ousergetelemstatus(sc, cesr->cesr_type, 436 cesr->cesr_data); 437 break; 438 } 439 440 case CHIOGSTATUS: 441 error = ch_usergetelemstatus(sc, 442 (struct changer_element_status_request *)data); 443 break; 444 445 case CHIOSVOLTAG: 446 error = ch_setvoltag(sc, 447 (struct changer_set_voltag_request *)data); 448 break; 449 450 /* Implement prevent/allow? */ 451 452 default: 453 error = scsipi_do_ioctl(sc->sc_periph, dev, cmd, data, 454 flags, p); 455 break; 456 } 457 458 return (error); 459 } 460 461 int 462 chpoll(dev, events, p) 463 dev_t dev; 464 int events; 465 struct proc *p; 466 { 467 struct ch_softc *sc = ch_cd.cd_devs[CHUNIT(dev)]; 468 int revents; 469 470 revents = events & (POLLOUT | POLLWRNORM); 471 472 if ((events & (POLLIN | POLLRDNORM)) == 0) 473 return (revents); 474 475 if (sc->sc_events == 0) 476 revents |= events & (POLLIN | POLLRDNORM); 477 else 478 selrecord(p, &sc->sc_selq); 479 480 return (revents); 481 } 482 483 static void 484 filt_chdetach(struct knote *kn) 485 { 486 struct ch_softc *sc = kn->kn_hook; 487 488 SLIST_REMOVE(&sc->sc_selq.sel_klist, kn, knote, kn_selnext); 489 } 490 491 static int 492 filt_chread(struct knote *kn, long hint) 493 { 494 struct ch_softc *sc = kn->kn_hook; 495 496 if (sc->sc_events == 0) 497 return (0); 498 kn->kn_data = CHANGER_EVENT_SIZE; 499 return (1); 500 } 501 502 static const struct filterops chread_filtops = 503 { 1, NULL, filt_chdetach, filt_chread }; 504 505 static const struct filterops chwrite_filtops = 506 { 1, NULL, filt_chdetach, filt_seltrue }; 507 508 int 509 chkqfilter(dev_t dev, struct knote *kn) 510 { 511 struct ch_softc *sc = ch_cd.cd_devs[CHUNIT(dev)]; 512 struct klist *klist; 513 514 switch (kn->kn_filter) { 515 case EVFILT_READ: 516 klist = &sc->sc_selq.sel_klist; 517 kn->kn_fop = &chread_filtops; 518 break; 519 520 case EVFILT_WRITE: 521 klist = &sc->sc_selq.sel_klist; 522 kn->kn_fop = &chwrite_filtops; 523 break; 524 525 default: 526 return (1); 527 } 528 529 kn->kn_hook = sc; 530 531 SLIST_INSERT_HEAD(klist, kn, kn_selnext); 532 533 return (0); 534 } 535 536 int 537 ch_interpret_sense(xs) 538 struct scsipi_xfer *xs; 539 { 540 struct scsipi_periph *periph = xs->xs_periph; 541 struct scsipi_sense_data *sense = &xs->sense.scsi_sense; 542 struct ch_softc *sc = (void *)periph->periph_dev; 543 u_int16_t asc_ascq; 544 545 /* 546 * If the periph is already recovering, just do the 547 * normal error recovering. 548 */ 549 if (periph->periph_flags & PERIPH_RECOVERING) 550 return (EJUSTRETURN); 551 552 /* 553 * If it isn't an extended or extended/deferred error, let 554 * the generic code handle it. 555 */ 556 if ((sense->error_code & SSD_ERRCODE) != 0x70 && 557 (sense->error_code & SSD_ERRCODE) != 0x71) 558 return (EJUSTRETURN); 559 560 /* 561 * We're only interested in condtions that 562 * indicate potential inventory violation. 563 * 564 * We use ASC/ASCQ codes for this. 565 */ 566 567 asc_ascq = (((u_int16_t) sense->add_sense_code) << 8) | 568 sense->add_sense_code_qual; 569 570 switch (asc_ascq) { 571 case 0x2800: 572 /* "Not Ready To Ready Transition (Medium May Have Changed)" */ 573 case 0x2900: 574 /* "Power On, Reset, or Bus Device Reset Occurred" */ 575 sc->sc_periph->periph_flags &= ~PERIPH_MEDIA_LOADED; 576 /* 577 * Enqueue an Element-Status-Changed event, and wake up 578 * any processes waiting for them. 579 */ 580 if ((xs->xs_control & XS_CTL_IGNORE_MEDIA_CHANGE) == 0) 581 ch_event(sc, CHEV_ELEMENT_STATUS_CHANGED); 582 if ((periph->periph_flags & PERIPH_OPEN) == 0) { 583 /* 584 * if the device is not yet open, we can ignore this 585 * information. 586 */ 587 return (0); 588 } 589 break; 590 default: 591 break; 592 } 593 594 return (EJUSTRETURN); 595 } 596 597 void 598 ch_event(sc, event) 599 struct ch_softc *sc; 600 u_int event; 601 { 602 603 sc->sc_events |= event; 604 selnotify(&sc->sc_selq, 0); 605 } 606 607 int 608 ch_move(sc, cm) 609 struct ch_softc *sc; 610 struct changer_move_request *cm; 611 { 612 struct scsi_move_medium cmd; 613 u_int16_t fromelem, toelem; 614 615 /* 616 * Check arguments. 617 */ 618 if ((cm->cm_fromtype > CHET_DT) || (cm->cm_totype > CHET_DT)) 619 return (EINVAL); 620 if ((cm->cm_fromunit > (sc->sc_counts[cm->cm_fromtype] - 1)) || 621 (cm->cm_tounit > (sc->sc_counts[cm->cm_totype] - 1))) 622 return (ENODEV); 623 624 /* 625 * Check the request against the changer's capabilities. 626 */ 627 if ((sc->sc_movemask[cm->cm_fromtype] & (1 << cm->cm_totype)) == 0) 628 return (ENODEV); 629 630 /* 631 * Calculate the source and destination elements. 632 */ 633 fromelem = sc->sc_firsts[cm->cm_fromtype] + cm->cm_fromunit; 634 toelem = sc->sc_firsts[cm->cm_totype] + cm->cm_tounit; 635 636 /* 637 * Build the SCSI command. 638 */ 639 memset(&cmd, 0, sizeof(cmd)); 640 cmd.opcode = MOVE_MEDIUM; 641 _lto2b(sc->sc_picker, cmd.tea); 642 _lto2b(fromelem, cmd.src); 643 _lto2b(toelem, cmd.dst); 644 if (cm->cm_flags & CM_INVERT) 645 cmd.flags |= MOVE_MEDIUM_INVERT; 646 647 /* 648 * Send command to changer. 649 */ 650 return (scsipi_command(sc->sc_periph, 651 (struct scsipi_generic *)&cmd, sizeof(cmd), NULL, 0, CHRETRIES, 652 100000, NULL, 0)); 653 } 654 655 int 656 ch_exchange(sc, ce) 657 struct ch_softc *sc; 658 struct changer_exchange_request *ce; 659 { 660 struct scsi_exchange_medium cmd; 661 u_int16_t src, dst1, dst2; 662 663 /* 664 * Check arguments. 665 */ 666 if ((ce->ce_srctype > CHET_DT) || (ce->ce_fdsttype > CHET_DT) || 667 (ce->ce_sdsttype > CHET_DT)) 668 return (EINVAL); 669 if ((ce->ce_srcunit > (sc->sc_counts[ce->ce_srctype] - 1)) || 670 (ce->ce_fdstunit > (sc->sc_counts[ce->ce_fdsttype] - 1)) || 671 (ce->ce_sdstunit > (sc->sc_counts[ce->ce_sdsttype] - 1))) 672 return (ENODEV); 673 674 /* 675 * Check the request against the changer's capabilities. 676 */ 677 if (((sc->sc_exchangemask[ce->ce_srctype] & 678 (1 << ce->ce_fdsttype)) == 0) || 679 ((sc->sc_exchangemask[ce->ce_fdsttype] & 680 (1 << ce->ce_sdsttype)) == 0)) 681 return (ENODEV); 682 683 /* 684 * Calculate the source and destination elements. 685 */ 686 src = sc->sc_firsts[ce->ce_srctype] + ce->ce_srcunit; 687 dst1 = sc->sc_firsts[ce->ce_fdsttype] + ce->ce_fdstunit; 688 dst2 = sc->sc_firsts[ce->ce_sdsttype] + ce->ce_sdstunit; 689 690 /* 691 * Build the SCSI command. 692 */ 693 memset(&cmd, 0, sizeof(cmd)); 694 cmd.opcode = EXCHANGE_MEDIUM; 695 _lto2b(sc->sc_picker, cmd.tea); 696 _lto2b(src, cmd.src); 697 _lto2b(dst1, cmd.fdst); 698 _lto2b(dst2, cmd.sdst); 699 if (ce->ce_flags & CE_INVERT1) 700 cmd.flags |= EXCHANGE_MEDIUM_INV1; 701 if (ce->ce_flags & CE_INVERT2) 702 cmd.flags |= EXCHANGE_MEDIUM_INV2; 703 704 /* 705 * Send command to changer. 706 */ 707 return (scsipi_command(sc->sc_periph, 708 (struct scsipi_generic *)&cmd, sizeof(cmd), NULL, 0, CHRETRIES, 709 100000, NULL, 0)); 710 } 711 712 int 713 ch_position(sc, cp) 714 struct ch_softc *sc; 715 struct changer_position_request *cp; 716 { 717 struct scsi_position_to_element cmd; 718 u_int16_t dst; 719 720 /* 721 * Check arguments. 722 */ 723 if (cp->cp_type > CHET_DT) 724 return (EINVAL); 725 if (cp->cp_unit > (sc->sc_counts[cp->cp_type] - 1)) 726 return (ENODEV); 727 728 /* 729 * Calculate the destination element. 730 */ 731 dst = sc->sc_firsts[cp->cp_type] + cp->cp_unit; 732 733 /* 734 * Build the SCSI command. 735 */ 736 memset(&cmd, 0, sizeof(cmd)); 737 cmd.opcode = POSITION_TO_ELEMENT; 738 _lto2b(sc->sc_picker, cmd.tea); 739 _lto2b(dst, cmd.dst); 740 if (cp->cp_flags & CP_INVERT) 741 cmd.flags |= POSITION_TO_ELEMENT_INVERT; 742 743 /* 744 * Send command to changer. 745 */ 746 return (scsipi_command(sc->sc_periph, 747 (struct scsipi_generic *)&cmd, sizeof(cmd), NULL, 0, CHRETRIES, 748 100000, NULL, 0)); 749 } 750 751 /* 752 * Perform a READ ELEMENT STATUS on behalf of the user, and return to 753 * the user only the data the user is interested in. This returns the 754 * old data format. 755 */ 756 int 757 ch_ousergetelemstatus(sc, chet, uptr) 758 struct ch_softc *sc; 759 int chet; 760 u_int8_t *uptr; 761 { 762 struct read_element_status_header *st_hdrp, st_hdr; 763 struct read_element_status_page_header *pg_hdrp; 764 struct read_element_status_descriptor *desc; 765 size_t size, desclen; 766 caddr_t data; 767 int avail, i, error = 0; 768 u_int8_t user_data; 769 770 /* 771 * If there are no elements of the requested type in the changer, 772 * the request is invalid. 773 */ 774 if (sc->sc_counts[chet] == 0) 775 return (EINVAL); 776 777 /* 778 * Do the request the user wants, but only read the status header. 779 * This will tell us the amount of storage we must allocate in 780 * order to read all data. 781 */ 782 error = ch_getelemstatus(sc, sc->sc_firsts[chet], 783 sc->sc_counts[chet], &st_hdr, sizeof(st_hdr), 784 XS_CTL_DATA_ONSTACK, 0); 785 if (error) 786 return (error); 787 788 size = sizeof(struct read_element_status_header) + 789 _3btol(st_hdr.nbytes); 790 791 /* 792 * We must have at least room for the status header and 793 * one page header (since we only ask for one element type 794 * at a time). 795 */ 796 if (size < (sizeof(struct read_element_status_header) + 797 sizeof(struct read_element_status_page_header))) 798 return (EIO); 799 800 /* 801 * Allocate the storage and do the request again. 802 */ 803 data = malloc(size, M_DEVBUF, M_WAITOK); 804 error = ch_getelemstatus(sc, sc->sc_firsts[chet], 805 sc->sc_counts[chet], data, size, 0, 0); 806 if (error) 807 goto done; 808 809 st_hdrp = (struct read_element_status_header *)data; 810 pg_hdrp = (struct read_element_status_page_header *)((u_long)st_hdrp + 811 sizeof(struct read_element_status_header)); 812 desclen = _2btol(pg_hdrp->edl); 813 814 /* 815 * Fill in the user status array. 816 */ 817 avail = _2btol(st_hdrp->count); 818 819 if (avail != sc->sc_counts[chet]) 820 printf("%s: warning, READ ELEMENT STATUS avail != count\n", 821 sc->sc_dev.dv_xname); 822 823 desc = (struct read_element_status_descriptor *)((u_long)data + 824 sizeof(struct read_element_status_header) + 825 sizeof(struct read_element_status_page_header)); 826 for (i = 0; i < avail; ++i) { 827 user_data = desc->flags1; 828 error = copyout(&user_data, &uptr[i], avail); 829 if (error) 830 break; 831 desc = (struct read_element_status_descriptor *)((u_long)desc 832 + desclen); 833 } 834 835 done: 836 if (data != NULL) 837 free(data, M_DEVBUF); 838 return (error); 839 } 840 841 /* 842 * Perform a READ ELEMENT STATUS on behalf of the user. This returns 843 * the new (more complete) data format. 844 */ 845 int 846 ch_usergetelemstatus(sc, cesr) 847 struct ch_softc *sc; 848 struct changer_element_status_request *cesr; 849 { 850 struct scsipi_channel *chan = sc->sc_periph->periph_channel; 851 struct scsipi_periph *dtperiph; 852 struct read_element_status_header *st_hdrp, st_hdr; 853 struct read_element_status_page_header *pg_hdrp; 854 struct read_element_status_descriptor *desc; 855 struct changer_volume_tag *avol, *pvol; 856 size_t size, desclen, stddesclen, offset; 857 int first, avail, i, error = 0; 858 caddr_t data; 859 void *uvendptr; 860 struct changer_element_status ces; 861 862 /* 863 * Check arguments. 864 */ 865 if (cesr->cesr_type > CHET_DT) 866 return (EINVAL); 867 if (sc->sc_counts[cesr->cesr_type] == 0) 868 return (ENODEV); 869 if (cesr->cesr_unit > (sc->sc_counts[cesr->cesr_type] - 1)) 870 return (ENODEV); 871 if (cesr->cesr_count > 872 (sc->sc_counts[cesr->cesr_type] + cesr->cesr_unit)) 873 return (EINVAL); 874 875 /* 876 * Do the request the user wants, but only read the status header. 877 * This will tell us the amount of storage we must allocate 878 * in order to read all the data. 879 */ 880 error = ch_getelemstatus(sc, sc->sc_firsts[cesr->cesr_type] + 881 cesr->cesr_unit, cesr->cesr_count, &st_hdr, sizeof(st_hdr), 0, 882 cesr->cesr_flags); 883 if (error) 884 return (error); 885 886 size = sizeof(struct read_element_status_header) + 887 _3btol(st_hdr.nbytes); 888 889 /* 890 * We must have at least room for the status header and 891 * one page header (since we only ask for oen element type 892 * at a time). 893 */ 894 if (size < (sizeof(struct read_element_status_header) + 895 sizeof(struct read_element_status_page_header))) 896 return (EIO); 897 898 /* 899 * Allocate the storage and do the request again. 900 */ 901 data = malloc(size, M_DEVBUF, M_WAITOK); 902 error = ch_getelemstatus(sc, sc->sc_firsts[cesr->cesr_type] + 903 cesr->cesr_unit, cesr->cesr_count, data, size, 0, 904 cesr->cesr_flags); 905 if (error) 906 goto done; 907 908 st_hdrp = (struct read_element_status_header *)data; 909 pg_hdrp = (struct read_element_status_page_header *)((u_long)st_hdrp + 910 sizeof(struct read_element_status_header)); 911 desclen = _2btol(pg_hdrp->edl); 912 913 /* 914 * Fill in the user status array. 915 */ 916 first = _2btol(st_hdrp->fear); 917 if (first < (sc->sc_firsts[cesr->cesr_type] + cesr->cesr_unit) || 918 first >= (sc->sc_firsts[cesr->cesr_type] + cesr->cesr_unit + 919 cesr->cesr_count)) { 920 error = EIO; 921 goto done; 922 } 923 first -= sc->sc_firsts[cesr->cesr_type] + cesr->cesr_unit; 924 925 avail = _2btol(st_hdrp->count); 926 if (avail <= 0 || avail > cesr->cesr_count) { 927 error = EIO; 928 goto done; 929 } 930 931 offset = sizeof(struct read_element_status_header) + 932 sizeof(struct read_element_status_page_header); 933 934 for (i = 0; i < cesr->cesr_count; i++) { 935 memset(&ces, 0, sizeof(ces)); 936 if (i < first || i >= (first + avail)) { 937 error = copyout(&ces, &cesr->cesr_data[i], 938 sizeof(ces)); 939 if (error) 940 goto done; 941 } 942 943 desc = (struct read_element_status_descriptor *) 944 (data + offset); 945 stddesclen = sizeof(struct read_element_status_descriptor); 946 offset += desclen; 947 948 ces.ces_flags = CESTATUS_STATUS_VALID; 949 950 /* 951 * The SCSI flags conveniently map directly to the 952 * chio API flags. 953 */ 954 ces.ces_flags |= (desc->flags1 & 0x3f); 955 956 ces.ces_asc = desc->sense_code; 957 ces.ces_ascq = desc->sense_qual; 958 959 /* 960 * For Data Transport elemenets, get the SCSI ID and LUN, 961 * and attempt to map them to a device name if they're 962 * on the same SCSI bus. 963 */ 964 if (desc->dt_scsi_flags & READ_ELEMENT_STATUS_DT_IDVALID) { 965 ces.ces_target = desc->dt_scsi_addr; 966 ces.ces_flags |= CESTATUS_TARGET_VALID; 967 } 968 if (desc->dt_scsi_flags & READ_ELEMENT_STATUS_DT_LUVALID) { 969 ces.ces_lun = desc->dt_scsi_flags & 970 READ_ELEMENT_STATUS_DT_LUNMASK; 971 ces.ces_flags |= CESTATUS_LUN_VALID; 972 } 973 if (desc->dt_scsi_flags & READ_ELEMENT_STATUS_DT_NOTBUS) 974 ces.ces_flags |= CESTATUS_NOTBUS; 975 else if ((ces.ces_flags & 976 (CESTATUS_TARGET_VALID|CESTATUS_LUN_VALID)) == 977 (CESTATUS_TARGET_VALID|CESTATUS_LUN_VALID)) { 978 if (ces.ces_target < chan->chan_ntargets && 979 ces.ces_lun < chan->chan_nluns && 980 (dtperiph = scsipi_lookup_periph(chan, 981 ces.ces_target, ces.ces_lun)) != NULL && 982 dtperiph->periph_dev != NULL) { 983 strcpy(ces.ces_xname, 984 dtperiph->periph_dev->dv_xname); 985 ces.ces_flags |= CESTATUS_XNAME_VALID; 986 } 987 } 988 989 if (desc->flags2 & READ_ELEMENT_STATUS_INVERT) 990 ces.ces_flags |= CESTATUS_INVERTED; 991 992 if (desc->flags2 & READ_ELEMENT_STATUS_SVALID) { 993 if (ch_map_element(sc, _2btol(desc->ssea), 994 &ces.ces_from_type, &ces.ces_from_unit)) 995 ces.ces_flags |= CESTATUS_FROM_VALID; 996 } 997 998 /* 999 * Extract volume tag information. 1000 */ 1001 switch (pg_hdrp->flags & 1002 (READ_ELEMENT_STATUS_PVOLTAG|READ_ELEMENT_STATUS_AVOLTAG)) { 1003 case (READ_ELEMENT_STATUS_PVOLTAG|READ_ELEMENT_STATUS_AVOLTAG): 1004 pvol = (struct changer_volume_tag *)(desc + 1); 1005 avol = pvol + 1; 1006 break; 1007 1008 case READ_ELEMENT_STATUS_PVOLTAG: 1009 pvol = (struct changer_volume_tag *)(desc + 1); 1010 avol = NULL; 1011 break; 1012 1013 case READ_ELEMENT_STATUS_AVOLTAG: 1014 pvol = NULL; 1015 avol = (struct changer_volume_tag *)(desc + 1); 1016 break; 1017 1018 default: 1019 avol = pvol = NULL; 1020 break; 1021 } 1022 1023 if (pvol != NULL) { 1024 ch_voltag_convert_in(pvol, &ces.ces_pvoltag); 1025 ces.ces_flags |= CESTATUS_PVOL_VALID; 1026 stddesclen += sizeof(struct changer_volume_tag); 1027 } 1028 if (avol != NULL) { 1029 ch_voltag_convert_in(avol, &ces.ces_avoltag); 1030 ces.ces_flags |= CESTATUS_AVOL_VALID; 1031 stddesclen += sizeof(struct changer_volume_tag); 1032 } 1033 1034 /* 1035 * Compute vendor-specific length. Note the 4 reserved 1036 * bytes between the volume tags and the vendor-specific 1037 * data. Copy it out of the user wants it. 1038 */ 1039 stddesclen += 4; 1040 if (desclen > stddesclen) 1041 ces.ces_vendor_len = desclen - stddesclen; 1042 1043 if (ces.ces_vendor_len != 0 && cesr->cesr_vendor_data != NULL) { 1044 error = copyin(&cesr->cesr_vendor_data[i], &uvendptr, 1045 sizeof(uvendptr)); 1046 if (error) 1047 goto done; 1048 error = copyout((void *)((u_long)desc + stddesclen), 1049 uvendptr, ces.ces_vendor_len); 1050 if (error) 1051 goto done; 1052 } 1053 1054 /* 1055 * Now copy out the status descriptor we've constructed. 1056 */ 1057 error = copyout(&ces, &cesr->cesr_data[i], sizeof(ces)); 1058 if (error) 1059 goto done; 1060 } 1061 1062 done: 1063 if (data != NULL) 1064 free(data, M_DEVBUF); 1065 return (error); 1066 } 1067 1068 int 1069 ch_getelemstatus(sc, first, count, data, datalen, scsiflags, flags) 1070 struct ch_softc *sc; 1071 int first, count; 1072 void *data; 1073 size_t datalen; 1074 int scsiflags; 1075 int flags; 1076 { 1077 struct scsi_read_element_status cmd; 1078 1079 /* 1080 * Build SCSI command. 1081 */ 1082 memset(&cmd, 0, sizeof(cmd)); 1083 cmd.opcode = READ_ELEMENT_STATUS; 1084 cmd.byte2 = ELEMENT_TYPE_ALL; 1085 if (flags & CESR_VOLTAGS) 1086 cmd.byte2 |= READ_ELEMENT_STATUS_VOLTAG; 1087 _lto2b(first, cmd.sea); 1088 _lto2b(count, cmd.count); 1089 _lto3b(datalen, cmd.len); 1090 1091 /* 1092 * Send command to changer. 1093 */ 1094 return (scsipi_command(sc->sc_periph, 1095 (struct scsipi_generic *)&cmd, sizeof(cmd), 1096 (u_char *)data, datalen, CHRETRIES, 100000, NULL, 1097 scsiflags | XS_CTL_DATA_IN)); 1098 } 1099 1100 int 1101 ch_setvoltag(sc, csvr) 1102 struct ch_softc *sc; 1103 struct changer_set_voltag_request *csvr; 1104 { 1105 struct scsi_send_volume_tag cmd; 1106 struct changer_volume_tag voltag; 1107 void *data = NULL; 1108 size_t datalen = 0; 1109 int error; 1110 u_int16_t dst; 1111 1112 /* 1113 * Check arguments. 1114 */ 1115 if (csvr->csvr_type > CHET_DT) 1116 return (EINVAL); 1117 if (csvr->csvr_unit > (sc->sc_counts[csvr->csvr_type] - 1)) 1118 return (ENODEV); 1119 1120 dst = sc->sc_firsts[csvr->csvr_type] + csvr->csvr_unit; 1121 1122 /* 1123 * Build the SCSI command. 1124 */ 1125 memset(&cmd, 0, sizeof(cmd)); 1126 cmd.opcode = SEND_VOLUME_TAG; 1127 _lto2b(dst, cmd.eaddr); 1128 1129 #define ALTERNATE (csvr->csvr_flags & CSVR_ALTERNATE) 1130 1131 switch (csvr->csvr_flags & CSVR_MODE_MASK) { 1132 case CSVR_MODE_SET: 1133 cmd.sac = ALTERNATE ? SAC_ASSERT_ALT : SAC_ASSERT_PRIMARY; 1134 break; 1135 1136 case CSVR_MODE_REPLACE: 1137 cmd.sac = ALTERNATE ? SAC_REPLACE_ALT : SAC_REPLACE_PRIMARY; 1138 break; 1139 1140 case CSVR_MODE_CLEAR: 1141 cmd.sac = ALTERNATE ? SAC_UNDEFINED_ALT : SAC_UNDEFINED_PRIMARY; 1142 break; 1143 1144 default: 1145 return (EINVAL); 1146 } 1147 1148 #undef ALTERNATE 1149 1150 if (cmd.sac < SAC_UNDEFINED_PRIMARY) { 1151 error = ch_voltag_convert_out(&csvr->csvr_voltag, &voltag); 1152 if (error) 1153 return (error); 1154 data = &voltag; 1155 datalen = sizeof(voltag); 1156 _lto2b(datalen, cmd.length); 1157 } 1158 1159 /* 1160 * Send command to changer. 1161 */ 1162 return (scsipi_command(sc->sc_periph, 1163 (struct scsipi_generic *)&cmd, sizeof(cmd), 1164 (u_char *)data, datalen, CHRETRIES, 100000, NULL, 1165 datalen ? XS_CTL_DATA_OUT | XS_CTL_DATA_ONSTACK : 0)); 1166 } 1167 1168 int 1169 ch_ielem(sc) 1170 struct ch_softc *sc; 1171 { 1172 int tmo; 1173 struct scsi_initialize_element_status cmd; 1174 1175 /* 1176 * Build SCSI command. 1177 */ 1178 memset(&cmd, 0, sizeof(cmd)); 1179 cmd.opcode = INITIALIZE_ELEMENT_STATUS; 1180 1181 /* 1182 * Send command to changer. 1183 * 1184 * The problem is, how long to allow for the command? 1185 * It can take a *really* long time, and also depends 1186 * on unknowable factors such as whether there are 1187 * *almost* readable labels on tapes that a barcode 1188 * reader is trying to decipher. 1189 * 1190 * I'm going to make this long enough to allow 5 minutes 1191 * per element plus an initial 10 minute wait. 1192 */ 1193 tmo = sc->sc_counts[CHET_MT] + 1194 sc->sc_counts[CHET_ST] + 1195 sc->sc_counts[CHET_IE] + 1196 sc->sc_counts[CHET_DT]; 1197 tmo *= 5 * 60 * 1000; 1198 tmo += (10 * 60 * 1000); 1199 1200 return (scsipi_command(sc->sc_periph, 1201 (struct scsipi_generic *)&cmd, sizeof(cmd), 1202 NULL, 0, CHRETRIES, tmo, NULL, XS_CTL_IGNORE_ILLEGAL_REQUEST)); 1203 } 1204 1205 /* 1206 * Ask the device about itself and fill in the parameters in our 1207 * softc. 1208 */ 1209 int 1210 ch_get_params(sc, scsiflags) 1211 struct ch_softc *sc; 1212 int scsiflags; 1213 { 1214 struct scsi_mode_sense_data { 1215 struct scsipi_mode_header header; 1216 union { 1217 struct page_element_address_assignment ea; 1218 struct page_transport_geometry_parameters tg; 1219 struct page_device_capabilities cap; 1220 } pages; 1221 } sense_data; 1222 int error, from; 1223 u_int8_t *moves, *exchanges; 1224 1225 /* 1226 * Grab info from the element address assignment page. 1227 */ 1228 memset(&sense_data, 0, sizeof(sense_data)); 1229 error = scsipi_mode_sense(sc->sc_periph, SMS_DBD, 0x1d, 1230 &sense_data.header, sizeof(sense_data), 1231 scsiflags | XS_CTL_DATA_ONSTACK, CHRETRIES, 6000); 1232 if (error) { 1233 printf("%s: could not sense element address page\n", 1234 sc->sc_dev.dv_xname); 1235 return (error); 1236 } 1237 1238 sc->sc_firsts[CHET_MT] = _2btol(sense_data.pages.ea.mtea); 1239 sc->sc_counts[CHET_MT] = _2btol(sense_data.pages.ea.nmte); 1240 sc->sc_firsts[CHET_ST] = _2btol(sense_data.pages.ea.fsea); 1241 sc->sc_counts[CHET_ST] = _2btol(sense_data.pages.ea.nse); 1242 sc->sc_firsts[CHET_IE] = _2btol(sense_data.pages.ea.fieea); 1243 sc->sc_counts[CHET_IE] = _2btol(sense_data.pages.ea.niee); 1244 sc->sc_firsts[CHET_DT] = _2btol(sense_data.pages.ea.fdtea); 1245 sc->sc_counts[CHET_DT] = _2btol(sense_data.pages.ea.ndte); 1246 1247 /* XXX ask for transport geometry page XXX */ 1248 1249 /* 1250 * Grab info from the capabilities page. 1251 */ 1252 memset(&sense_data, 0, sizeof(sense_data)); 1253 /* 1254 * XXX: Note: not all changers can deal with disabled block descriptors 1255 */ 1256 error = scsipi_mode_sense(sc->sc_periph, SMS_DBD, 0x1f, 1257 &sense_data.header, sizeof(sense_data), 1258 scsiflags | XS_CTL_DATA_ONSTACK, CHRETRIES, 6000); 1259 if (error) { 1260 printf("%s: could not sense capabilities page\n", 1261 sc->sc_dev.dv_xname); 1262 return (error); 1263 } 1264 1265 memset(sc->sc_movemask, 0, sizeof(sc->sc_movemask)); 1266 memset(sc->sc_exchangemask, 0, sizeof(sc->sc_exchangemask)); 1267 moves = &sense_data.pages.cap.move_from_mt; 1268 exchanges = &sense_data.pages.cap.exchange_with_mt; 1269 for (from = CHET_MT; from <= CHET_DT; ++from) { 1270 sc->sc_movemask[from] = moves[from]; 1271 sc->sc_exchangemask[from] = exchanges[from]; 1272 } 1273 1274 #ifdef CH_AUTOMATIC_IELEM_POLICY 1275 /* 1276 * If we need to do an Init-Element-Status, 1277 * do that now that we know what's in the changer. 1278 */ 1279 if ((scsiflags & XS_CTL_IGNORE_MEDIA_CHANGE) == 0) { 1280 if ((sc->sc_periph->periph_flags & PERIPH_MEDIA_LOADED) == 0) 1281 error = ch_ielem(sc); 1282 if (error == 0) 1283 sc->sc_periph->periph_flags |= PERIPH_MEDIA_LOADED; 1284 else 1285 sc->sc_periph->periph_flags &= ~PERIPH_MEDIA_LOADED; 1286 } 1287 #endif 1288 return (error); 1289 } 1290 1291 void 1292 ch_get_quirks(sc, inqbuf) 1293 struct ch_softc *sc; 1294 struct scsipi_inquiry_pattern *inqbuf; 1295 { 1296 struct chquirk *match; 1297 int priority; 1298 1299 sc->sc_settledelay = 0; 1300 1301 match = (struct chquirk *)scsipi_inqmatch(inqbuf, 1302 (caddr_t)chquirks, 1303 sizeof(chquirks) / sizeof(chquirks[0]), 1304 sizeof(chquirks[0]), &priority); 1305 if (priority != 0) 1306 sc->sc_settledelay = match->cq_settledelay; 1307 } 1308 1309 int 1310 ch_map_element(sc, elem, typep, unitp) 1311 struct ch_softc *sc; 1312 u_int16_t elem; 1313 int *typep, *unitp; 1314 { 1315 int chet; 1316 1317 for (chet = CHET_MT; chet <= CHET_DT; chet++) { 1318 if (elem >= sc->sc_firsts[chet] && 1319 elem < (sc->sc_firsts[chet] + sc->sc_counts[chet])) { 1320 *typep = chet; 1321 *unitp = elem - sc->sc_firsts[chet]; 1322 return (1); 1323 } 1324 } 1325 return (0); 1326 } 1327 1328 void 1329 ch_voltag_convert_in(sv, cv) 1330 const struct changer_volume_tag *sv; 1331 struct changer_voltag *cv; 1332 { 1333 int i; 1334 1335 memset(cv, 0, sizeof(struct changer_voltag)); 1336 1337 /* 1338 * Copy the volume tag string from the SCSI representation. 1339 * Per the SCSI-2 spec, we stop at the first blank character. 1340 */ 1341 for (i = 0; i < sizeof(sv->volid); i++) { 1342 if (sv->volid[i] == ' ') 1343 break; 1344 cv->cv_tag[i] = sv->volid[i]; 1345 } 1346 cv->cv_tag[i] = '\0'; 1347 1348 cv->cv_serial = _2btol(sv->volseq); 1349 } 1350 1351 int 1352 ch_voltag_convert_out(cv, sv) 1353 const struct changer_voltag *cv; 1354 struct changer_volume_tag *sv; 1355 { 1356 int i; 1357 1358 memset(sv, ' ', sizeof(struct changer_volume_tag)); 1359 1360 for (i = 0; i < sizeof(sv->volid); i++) { 1361 if (cv->cv_tag[i] == '\0') 1362 break; 1363 /* 1364 * Limit the character set to what is suggested in 1365 * the SCSI-2 spec. 1366 */ 1367 if ((cv->cv_tag[i] < '0' || cv->cv_tag[i] > '9') && 1368 (cv->cv_tag[i] < 'A' || cv->cv_tag[i] > 'Z') && 1369 (cv->cv_tag[i] != '_')) 1370 return (EINVAL); 1371 sv->volid[i] = cv->cv_tag[i]; 1372 } 1373 1374 _lto2b(cv->cv_serial, sv->volseq); 1375 1376 return (0); 1377 } 1378