scsi_ch.c revision 312567
1/*- 2 * Copyright (c) 1997 Justin T. Gibbs. 3 * Copyright (c) 1997, 1998, 1999 Kenneth D. Merry. 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions, and the following disclaimer, 11 * without modification, immediately at the beginning of the file. 12 * 2. The name of the author may not be used to endorse or promote products 13 * derived from this software without specific prior written permission. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR 19 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 */ 27 28/* 29 * Derived from the NetBSD SCSI changer driver. 30 * 31 * $NetBSD: ch.c,v 1.32 1998/01/12 09:49:12 thorpej Exp $ 32 * 33 */ 34/*- 35 * Copyright (c) 1996, 1997 Jason R. Thorpe <thorpej@and.com> 36 * All rights reserved. 37 * 38 * Partially based on an autochanger driver written by Stefan Grefen 39 * and on an autochanger driver written by the Systems Programming Group 40 * at the University of Utah Computer Science Department. 41 * 42 * Redistribution and use in source and binary forms, with or without 43 * modification, are permitted provided that the following conditions 44 * are met: 45 * 1. Redistributions of source code must retain the above copyright 46 * notice, this list of conditions and the following disclaimer. 47 * 2. Redistributions in binary form must reproduce the above copyright 48 * notice, this list of conditions and the following disclaimer in the 49 * documentation and/or other materials provided with the distribution. 50 * 3. All advertising materials mentioning features or use of this software 51 * must display the following acknowledgements: 52 * This product includes software developed by Jason R. Thorpe 53 * for And Communications, http://www.and.com/ 54 * 4. The name of the author may not be used to endorse or promote products 55 * derived from this software without specific prior written permission. 56 * 57 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 58 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 59 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 60 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 61 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 62 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 63 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 64 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 65 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 66 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 67 * SUCH DAMAGE. 68 */ 69 70#include <sys/cdefs.h> 71__FBSDID("$FreeBSD: stable/10/sys/cam/scsi/scsi_ch.c 312567 2017-01-21 08:17:30Z mav $"); 72 73#include <sys/param.h> 74#include <sys/queue.h> 75#include <sys/systm.h> 76#include <sys/kernel.h> 77#include <sys/types.h> 78#include <sys/malloc.h> 79#include <sys/fcntl.h> 80#include <sys/conf.h> 81#include <sys/chio.h> 82#include <sys/errno.h> 83#include <sys/devicestat.h> 84 85#include <cam/cam.h> 86#include <cam/cam_ccb.h> 87#include <cam/cam_periph.h> 88#include <cam/cam_xpt_periph.h> 89#include <cam/cam_debug.h> 90 91#include <cam/scsi/scsi_all.h> 92#include <cam/scsi/scsi_message.h> 93#include <cam/scsi/scsi_ch.h> 94 95/* 96 * Timeout definitions for various changer related commands. They may 97 * be too short for some devices (especially the timeout for INITIALIZE 98 * ELEMENT STATUS). 99 */ 100 101static const u_int32_t CH_TIMEOUT_MODE_SENSE = 6000; 102static const u_int32_t CH_TIMEOUT_MOVE_MEDIUM = 15 * 60 * 1000; 103static const u_int32_t CH_TIMEOUT_EXCHANGE_MEDIUM = 15 * 60 * 1000; 104static const u_int32_t CH_TIMEOUT_POSITION_TO_ELEMENT = 15 * 60 * 1000; 105static const u_int32_t CH_TIMEOUT_READ_ELEMENT_STATUS = 5 * 60 * 1000; 106static const u_int32_t CH_TIMEOUT_SEND_VOLTAG = 10000; 107static const u_int32_t CH_TIMEOUT_INITIALIZE_ELEMENT_STATUS = 500000; 108 109typedef enum { 110 CH_FLAG_INVALID = 0x001 111} ch_flags; 112 113typedef enum { 114 CH_STATE_PROBE, 115 CH_STATE_NORMAL 116} ch_state; 117 118typedef enum { 119 CH_CCB_PROBE 120} ch_ccb_types; 121 122typedef enum { 123 CH_Q_NONE = 0x00, 124 CH_Q_NO_DBD = 0x01, 125 CH_Q_NO_DVCID = 0x02 126} ch_quirks; 127 128#define CH_Q_BIT_STRING \ 129 "\020" \ 130 "\001NO_DBD" \ 131 "\002NO_DVCID" 132 133#define ccb_state ppriv_field0 134#define ccb_bp ppriv_ptr1 135 136struct scsi_mode_sense_data { 137 struct scsi_mode_header_6 header; 138 struct scsi_mode_blk_desc blk_desc; 139 union { 140 struct page_element_address_assignment ea; 141 struct page_transport_geometry_parameters tg; 142 struct page_device_capabilities cap; 143 } pages; 144}; 145 146struct ch_softc { 147 ch_flags flags; 148 ch_state state; 149 ch_quirks quirks; 150 union ccb saved_ccb; 151 struct devstat *device_stats; 152 struct cdev *dev; 153 int open_count; 154 155 int sc_picker; /* current picker */ 156 157 /* 158 * The following information is obtained from the 159 * element address assignment page. 160 */ 161 int sc_firsts[CHET_MAX + 1]; /* firsts */ 162 int sc_counts[CHET_MAX + 1]; /* counts */ 163 164 /* 165 * The following mask defines the legal combinations 166 * of elements for the MOVE MEDIUM command. 167 */ 168 u_int8_t sc_movemask[CHET_MAX + 1]; 169 170 /* 171 * As above, but for EXCHANGE MEDIUM. 172 */ 173 u_int8_t sc_exchangemask[CHET_MAX + 1]; 174 175 /* 176 * Quirks; see below. XXX KDM not implemented yet 177 */ 178 int sc_settledelay; /* delay for settle */ 179}; 180 181static d_open_t chopen; 182static d_close_t chclose; 183static d_ioctl_t chioctl; 184static periph_init_t chinit; 185static periph_ctor_t chregister; 186static periph_oninv_t choninvalidate; 187static periph_dtor_t chcleanup; 188static periph_start_t chstart; 189static void chasync(void *callback_arg, u_int32_t code, 190 struct cam_path *path, void *arg); 191static void chdone(struct cam_periph *periph, 192 union ccb *done_ccb); 193static int cherror(union ccb *ccb, u_int32_t cam_flags, 194 u_int32_t sense_flags); 195static int chmove(struct cam_periph *periph, 196 struct changer_move *cm); 197static int chexchange(struct cam_periph *periph, 198 struct changer_exchange *ce); 199static int chposition(struct cam_periph *periph, 200 struct changer_position *cp); 201static int chgetelemstatus(struct cam_periph *periph, 202 int scsi_version, u_long cmd, 203 struct changer_element_status_request *csr); 204static int chsetvoltag(struct cam_periph *periph, 205 struct changer_set_voltag_request *csvr); 206static int chielem(struct cam_periph *periph, 207 unsigned int timeout); 208static int chgetparams(struct cam_periph *periph); 209static int chscsiversion(struct cam_periph *periph); 210 211static struct periph_driver chdriver = 212{ 213 chinit, "ch", 214 TAILQ_HEAD_INITIALIZER(chdriver.units), /* generation */ 0 215}; 216 217PERIPHDRIVER_DECLARE(ch, chdriver); 218 219static struct cdevsw ch_cdevsw = { 220 .d_version = D_VERSION, 221 .d_flags = D_TRACKCLOSE, 222 .d_open = chopen, 223 .d_close = chclose, 224 .d_ioctl = chioctl, 225 .d_name = "ch", 226}; 227 228static MALLOC_DEFINE(M_SCSICH, "scsi_ch", "scsi_ch buffers"); 229 230static void 231chinit(void) 232{ 233 cam_status status; 234 235 /* 236 * Install a global async callback. This callback will 237 * receive async callbacks like "new device found". 238 */ 239 status = xpt_register_async(AC_FOUND_DEVICE, chasync, NULL, NULL); 240 241 if (status != CAM_REQ_CMP) { 242 printf("ch: Failed to attach master async callback " 243 "due to status 0x%x!\n", status); 244 } 245} 246 247static void 248chdevgonecb(void *arg) 249{ 250 struct ch_softc *softc; 251 struct cam_periph *periph; 252 struct mtx *mtx; 253 int i; 254 255 periph = (struct cam_periph *)arg; 256 mtx = cam_periph_mtx(periph); 257 mtx_lock(mtx); 258 259 softc = (struct ch_softc *)periph->softc; 260 KASSERT(softc->open_count >= 0, ("Negative open count %d", 261 softc->open_count)); 262 263 /* 264 * When we get this callback, we will get no more close calls from 265 * devfs. So if we have any dangling opens, we need to release the 266 * reference held for that particular context. 267 */ 268 for (i = 0; i < softc->open_count; i++) 269 cam_periph_release_locked(periph); 270 271 softc->open_count = 0; 272 273 /* 274 * Release the reference held for the device node, it is gone now. 275 */ 276 cam_periph_release_locked(periph); 277 278 /* 279 * We reference the lock directly here, instead of using 280 * cam_periph_unlock(). The reason is that the final call to 281 * cam_periph_release_locked() above could result in the periph 282 * getting freed. If that is the case, dereferencing the periph 283 * with a cam_periph_unlock() call would cause a page fault. 284 */ 285 mtx_unlock(mtx); 286} 287 288static void 289choninvalidate(struct cam_periph *periph) 290{ 291 struct ch_softc *softc; 292 293 softc = (struct ch_softc *)periph->softc; 294 295 /* 296 * De-register any async callbacks. 297 */ 298 xpt_register_async(0, chasync, periph, periph->path); 299 300 softc->flags |= CH_FLAG_INVALID; 301 302 /* 303 * Tell devfs this device has gone away, and ask for a callback 304 * when it has cleaned up its state. 305 */ 306 destroy_dev_sched_cb(softc->dev, chdevgonecb, periph); 307} 308 309static void 310chcleanup(struct cam_periph *periph) 311{ 312 struct ch_softc *softc; 313 314 softc = (struct ch_softc *)periph->softc; 315 316 devstat_remove_entry(softc->device_stats); 317 318 free(softc, M_DEVBUF); 319} 320 321static void 322chasync(void *callback_arg, u_int32_t code, struct cam_path *path, void *arg) 323{ 324 struct cam_periph *periph; 325 326 periph = (struct cam_periph *)callback_arg; 327 328 switch(code) { 329 case AC_FOUND_DEVICE: 330 { 331 struct ccb_getdev *cgd; 332 cam_status status; 333 334 cgd = (struct ccb_getdev *)arg; 335 if (cgd == NULL) 336 break; 337 338 if (cgd->protocol != PROTO_SCSI) 339 break; 340 if (SID_QUAL(&cgd->inq_data) != SID_QUAL_LU_CONNECTED) 341 break; 342 if (SID_TYPE(&cgd->inq_data)!= T_CHANGER) 343 break; 344 345 /* 346 * Allocate a peripheral instance for 347 * this device and start the probe 348 * process. 349 */ 350 status = cam_periph_alloc(chregister, choninvalidate, 351 chcleanup, chstart, "ch", 352 CAM_PERIPH_BIO, path, 353 chasync, AC_FOUND_DEVICE, cgd); 354 355 if (status != CAM_REQ_CMP 356 && status != CAM_REQ_INPROG) 357 printf("chasync: Unable to probe new device " 358 "due to status 0x%x\n", status); 359 360 break; 361 362 } 363 default: 364 cam_periph_async(periph, code, path, arg); 365 break; 366 } 367} 368 369static cam_status 370chregister(struct cam_periph *periph, void *arg) 371{ 372 struct ch_softc *softc; 373 struct ccb_getdev *cgd; 374 struct ccb_pathinq cpi; 375 struct make_dev_args args; 376 int error; 377 378 cgd = (struct ccb_getdev *)arg; 379 if (cgd == NULL) { 380 printf("chregister: no getdev CCB, can't register device\n"); 381 return(CAM_REQ_CMP_ERR); 382 } 383 384 softc = (struct ch_softc *)malloc(sizeof(*softc),M_DEVBUF,M_NOWAIT); 385 386 if (softc == NULL) { 387 printf("chregister: Unable to probe new device. " 388 "Unable to allocate softc\n"); 389 return(CAM_REQ_CMP_ERR); 390 } 391 392 bzero(softc, sizeof(*softc)); 393 softc->state = CH_STATE_PROBE; 394 periph->softc = softc; 395 softc->quirks = CH_Q_NONE; 396 397 /* 398 * The DVCID and CURDATA bits were not introduced until the SMC 399 * spec. If this device claims SCSI-2 or earlier support, then it 400 * very likely does not support these bits. 401 */ 402 if (cgd->inq_data.version <= SCSI_REV_2) 403 softc->quirks |= CH_Q_NO_DVCID; 404 405 bzero(&cpi, sizeof(cpi)); 406 xpt_setup_ccb(&cpi.ccb_h, periph->path, CAM_PRIORITY_NORMAL); 407 cpi.ccb_h.func_code = XPT_PATH_INQ; 408 xpt_action((union ccb *)&cpi); 409 410 /* 411 * Changers don't have a blocksize, and obviously don't support 412 * tagged queueing. 413 */ 414 cam_periph_unlock(periph); 415 softc->device_stats = devstat_new_entry("ch", 416 periph->unit_number, 0, 417 DEVSTAT_NO_BLOCKSIZE | DEVSTAT_NO_ORDERED_TAGS, 418 SID_TYPE(&cgd->inq_data) | 419 XPORT_DEVSTAT_TYPE(cpi.transport), 420 DEVSTAT_PRIORITY_OTHER); 421 422 /* 423 * Acquire a reference to the periph before we create the devfs 424 * instance for it. We'll release this reference once the devfs 425 * instance has been freed. 426 */ 427 if (cam_periph_acquire(periph) != CAM_REQ_CMP) { 428 xpt_print(periph->path, "%s: lost periph during " 429 "registration!\n", __func__); 430 cam_periph_lock(periph); 431 return (CAM_REQ_CMP_ERR); 432 } 433 434 435 /* Register the device */ 436 make_dev_args_init(&args); 437 args.mda_devsw = &ch_cdevsw; 438 args.mda_unit = periph->unit_number; 439 args.mda_uid = UID_ROOT; 440 args.mda_gid = GID_OPERATOR; 441 args.mda_mode = 0600; 442 args.mda_si_drv1 = periph; 443 error = make_dev_s(&args, &softc->dev, "%s%d", periph->periph_name, 444 periph->unit_number); 445 cam_periph_lock(periph); 446 if (error != 0) { 447 cam_periph_release_locked(periph); 448 return (CAM_REQ_CMP_ERR); 449 } 450 451 /* 452 * Add an async callback so that we get 453 * notified if this device goes away. 454 */ 455 xpt_register_async(AC_LOST_DEVICE, chasync, periph, periph->path); 456 457 /* 458 * Lock this periph until we are setup. 459 * This first call can't block 460 */ 461 (void)cam_periph_hold(periph, PRIBIO); 462 xpt_schedule(periph, CAM_PRIORITY_DEV); 463 464 return(CAM_REQ_CMP); 465} 466 467static int 468chopen(struct cdev *dev, int flags, int fmt, struct thread *td) 469{ 470 struct cam_periph *periph; 471 struct ch_softc *softc; 472 int error; 473 474 periph = (struct cam_periph *)dev->si_drv1; 475 if (cam_periph_acquire(periph) != CAM_REQ_CMP) 476 return (ENXIO); 477 478 softc = (struct ch_softc *)periph->softc; 479 480 cam_periph_lock(periph); 481 482 if (softc->flags & CH_FLAG_INVALID) { 483 cam_periph_release_locked(periph); 484 cam_periph_unlock(periph); 485 return(ENXIO); 486 } 487 488 if ((error = cam_periph_hold(periph, PRIBIO | PCATCH)) != 0) { 489 cam_periph_unlock(periph); 490 cam_periph_release(periph); 491 return (error); 492 } 493 494 /* 495 * Load information about this changer device into the softc. 496 */ 497 if ((error = chgetparams(periph)) != 0) { 498 cam_periph_unhold(periph); 499 cam_periph_release_locked(periph); 500 cam_periph_unlock(periph); 501 return(error); 502 } 503 504 cam_periph_unhold(periph); 505 506 softc->open_count++; 507 508 cam_periph_unlock(periph); 509 510 return(error); 511} 512 513static int 514chclose(struct cdev *dev, int flag, int fmt, struct thread *td) 515{ 516 struct cam_periph *periph; 517 struct ch_softc *softc; 518 struct mtx *mtx; 519 520 periph = (struct cam_periph *)dev->si_drv1; 521 mtx = cam_periph_mtx(periph); 522 mtx_lock(mtx); 523 524 softc = (struct ch_softc *)periph->softc; 525 softc->open_count--; 526 527 cam_periph_release_locked(periph); 528 529 /* 530 * We reference the lock directly here, instead of using 531 * cam_periph_unlock(). The reason is that the call to 532 * cam_periph_release_locked() above could result in the periph 533 * getting freed. If that is the case, dereferencing the periph 534 * with a cam_periph_unlock() call would cause a page fault. 535 * 536 * cam_periph_release() avoids this problem using the same method, 537 * but we're manually acquiring and dropping the lock here to 538 * protect the open count and avoid another lock acquisition and 539 * release. 540 */ 541 mtx_unlock(mtx); 542 543 return(0); 544} 545 546static void 547chstart(struct cam_periph *periph, union ccb *start_ccb) 548{ 549 struct ch_softc *softc; 550 551 softc = (struct ch_softc *)periph->softc; 552 553 switch (softc->state) { 554 case CH_STATE_NORMAL: 555 { 556 xpt_release_ccb(start_ccb); 557 break; 558 } 559 case CH_STATE_PROBE: 560 { 561 int mode_buffer_len; 562 void *mode_buffer; 563 564 /* 565 * Include the block descriptor when calculating the mode 566 * buffer length, 567 */ 568 mode_buffer_len = sizeof(struct scsi_mode_header_6) + 569 sizeof(struct scsi_mode_blk_desc) + 570 sizeof(struct page_element_address_assignment); 571 572 mode_buffer = malloc(mode_buffer_len, M_SCSICH, M_NOWAIT); 573 574 if (mode_buffer == NULL) { 575 printf("chstart: couldn't malloc mode sense data\n"); 576 break; 577 } 578 bzero(mode_buffer, mode_buffer_len); 579 580 /* 581 * Get the element address assignment page. 582 */ 583 scsi_mode_sense(&start_ccb->csio, 584 /* retries */ 1, 585 /* cbfcnp */ chdone, 586 /* tag_action */ MSG_SIMPLE_Q_TAG, 587 /* dbd */ (softc->quirks & CH_Q_NO_DBD) ? 588 FALSE : TRUE, 589 /* pc */ SMS_PAGE_CTRL_CURRENT, 590 /* page */ CH_ELEMENT_ADDR_ASSIGN_PAGE, 591 /* param_buf */ (u_int8_t *)mode_buffer, 592 /* param_len */ mode_buffer_len, 593 /* sense_len */ SSD_FULL_SIZE, 594 /* timeout */ CH_TIMEOUT_MODE_SENSE); 595 596 start_ccb->ccb_h.ccb_bp = NULL; 597 start_ccb->ccb_h.ccb_state = CH_CCB_PROBE; 598 xpt_action(start_ccb); 599 break; 600 } 601 } 602} 603 604static void 605chdone(struct cam_periph *periph, union ccb *done_ccb) 606{ 607 struct ch_softc *softc; 608 struct ccb_scsiio *csio; 609 610 softc = (struct ch_softc *)periph->softc; 611 csio = &done_ccb->csio; 612 613 switch(done_ccb->ccb_h.ccb_state) { 614 case CH_CCB_PROBE: 615 { 616 struct scsi_mode_header_6 *mode_header; 617 struct page_element_address_assignment *ea; 618 char announce_buf[80]; 619 620 621 mode_header = (struct scsi_mode_header_6 *)csio->data_ptr; 622 623 ea = (struct page_element_address_assignment *) 624 find_mode_page_6(mode_header); 625 626 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP){ 627 628 softc->sc_firsts[CHET_MT] = scsi_2btoul(ea->mtea); 629 softc->sc_counts[CHET_MT] = scsi_2btoul(ea->nmte); 630 softc->sc_firsts[CHET_ST] = scsi_2btoul(ea->fsea); 631 softc->sc_counts[CHET_ST] = scsi_2btoul(ea->nse); 632 softc->sc_firsts[CHET_IE] = scsi_2btoul(ea->fieea); 633 softc->sc_counts[CHET_IE] = scsi_2btoul(ea->niee); 634 softc->sc_firsts[CHET_DT] = scsi_2btoul(ea->fdtea); 635 softc->sc_counts[CHET_DT] = scsi_2btoul(ea->ndte); 636 softc->sc_picker = softc->sc_firsts[CHET_MT]; 637 638#define PLURAL(c) (c) == 1 ? "" : "s" 639 snprintf(announce_buf, sizeof(announce_buf), 640 "%d slot%s, %d drive%s, " 641 "%d picker%s, %d portal%s", 642 softc->sc_counts[CHET_ST], 643 PLURAL(softc->sc_counts[CHET_ST]), 644 softc->sc_counts[CHET_DT], 645 PLURAL(softc->sc_counts[CHET_DT]), 646 softc->sc_counts[CHET_MT], 647 PLURAL(softc->sc_counts[CHET_MT]), 648 softc->sc_counts[CHET_IE], 649 PLURAL(softc->sc_counts[CHET_IE])); 650#undef PLURAL 651 if (announce_buf[0] != '\0') { 652 xpt_announce_periph(periph, announce_buf); 653 xpt_announce_quirks(periph, softc->quirks, 654 CH_Q_BIT_STRING); 655 } 656 } else { 657 int error; 658 659 error = cherror(done_ccb, CAM_RETRY_SELTO, 660 SF_RETRY_UA | SF_NO_PRINT); 661 /* 662 * Retry any UNIT ATTENTION type errors. They 663 * are expected at boot. 664 */ 665 if (error == ERESTART) { 666 /* 667 * A retry was scheuled, so 668 * just return. 669 */ 670 return; 671 } else if (error != 0) { 672 struct scsi_mode_sense_6 *sms; 673 int frozen, retry_scheduled; 674 675 sms = (struct scsi_mode_sense_6 *) 676 done_ccb->csio.cdb_io.cdb_bytes; 677 frozen = (done_ccb->ccb_h.status & 678 CAM_DEV_QFRZN) != 0; 679 680 /* 681 * Check to see if block descriptors were 682 * disabled. Some devices don't like that. 683 * We're taking advantage of the fact that 684 * the first few bytes of the 6 and 10 byte 685 * mode sense commands are the same. If 686 * block descriptors were disabled, enable 687 * them and re-send the command. 688 */ 689 if ((sms->byte2 & SMS_DBD) != 0 && 690 (periph->flags & CAM_PERIPH_INVALID) == 0) { 691 sms->byte2 &= ~SMS_DBD; 692 xpt_action(done_ccb); 693 softc->quirks |= CH_Q_NO_DBD; 694 retry_scheduled = 1; 695 } else 696 retry_scheduled = 0; 697 698 /* Don't wedge this device's queue */ 699 if (frozen) 700 cam_release_devq(done_ccb->ccb_h.path, 701 /*relsim_flags*/0, 702 /*reduction*/0, 703 /*timeout*/0, 704 /*getcount_only*/0); 705 706 if (retry_scheduled) 707 return; 708 709 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) 710 == CAM_SCSI_STATUS_ERROR) 711 scsi_sense_print(&done_ccb->csio); 712 else { 713 xpt_print(periph->path, 714 "got CAM status %#x\n", 715 done_ccb->ccb_h.status); 716 } 717 xpt_print(periph->path, "fatal error, failed " 718 "to attach to device\n"); 719 720 cam_periph_invalidate(periph); 721 722 } 723 } 724 softc->state = CH_STATE_NORMAL; 725 free(mode_header, M_SCSICH); 726 /* 727 * Since our peripheral may be invalidated by an error 728 * above or an external event, we must release our CCB 729 * before releasing the probe lock on the peripheral. 730 * The peripheral will only go away once the last lock 731 * is removed, and we need it around for the CCB release 732 * operation. 733 */ 734 xpt_release_ccb(done_ccb); 735 cam_periph_unhold(periph); 736 return; 737 } 738 default: 739 break; 740 } 741 xpt_release_ccb(done_ccb); 742} 743 744static int 745cherror(union ccb *ccb, u_int32_t cam_flags, u_int32_t sense_flags) 746{ 747 struct ch_softc *softc; 748 struct cam_periph *periph; 749 750 periph = xpt_path_periph(ccb->ccb_h.path); 751 softc = (struct ch_softc *)periph->softc; 752 753 return (cam_periph_error(ccb, cam_flags, sense_flags, 754 &softc->saved_ccb)); 755} 756 757static int 758chioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flag, struct thread *td) 759{ 760 struct cam_periph *periph; 761 struct ch_softc *softc; 762 int error; 763 764 periph = (struct cam_periph *)dev->si_drv1; 765 cam_periph_lock(periph); 766 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("entering chioctl\n")); 767 768 softc = (struct ch_softc *)periph->softc; 769 770 error = 0; 771 772 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, 773 ("trying to do ioctl %#lx\n", cmd)); 774 775 /* 776 * If this command can change the device's state, we must 777 * have the device open for writing. 778 */ 779 switch (cmd) { 780 case CHIOGPICKER: 781 case CHIOGPARAMS: 782 case OCHIOGSTATUS: 783 case CHIOGSTATUS: 784 break; 785 786 default: 787 if ((flag & FWRITE) == 0) { 788 cam_periph_unlock(periph); 789 return (EBADF); 790 } 791 } 792 793 switch (cmd) { 794 case CHIOMOVE: 795 error = chmove(periph, (struct changer_move *)addr); 796 break; 797 798 case CHIOEXCHANGE: 799 error = chexchange(periph, (struct changer_exchange *)addr); 800 break; 801 802 case CHIOPOSITION: 803 error = chposition(periph, (struct changer_position *)addr); 804 break; 805 806 case CHIOGPICKER: 807 *(int *)addr = softc->sc_picker - softc->sc_firsts[CHET_MT]; 808 break; 809 810 case CHIOSPICKER: 811 { 812 int new_picker = *(int *)addr; 813 814 if (new_picker > (softc->sc_counts[CHET_MT] - 1)) { 815 error = EINVAL; 816 break; 817 } 818 softc->sc_picker = softc->sc_firsts[CHET_MT] + new_picker; 819 break; 820 } 821 case CHIOGPARAMS: 822 { 823 struct changer_params *cp = (struct changer_params *)addr; 824 825 cp->cp_npickers = softc->sc_counts[CHET_MT]; 826 cp->cp_nslots = softc->sc_counts[CHET_ST]; 827 cp->cp_nportals = softc->sc_counts[CHET_IE]; 828 cp->cp_ndrives = softc->sc_counts[CHET_DT]; 829 break; 830 } 831 case CHIOIELEM: 832 error = chielem(periph, *(unsigned int *)addr); 833 break; 834 835 case OCHIOGSTATUS: 836 { 837 error = chgetelemstatus(periph, SCSI_REV_2, cmd, 838 (struct changer_element_status_request *)addr); 839 break; 840 } 841 842 case CHIOGSTATUS: 843 { 844 int scsi_version; 845 846 scsi_version = chscsiversion(periph); 847 if (scsi_version >= SCSI_REV_0) { 848 error = chgetelemstatus(periph, scsi_version, cmd, 849 (struct changer_element_status_request *)addr); 850 } 851 else { /* unable to determine the SCSI version */ 852 cam_periph_unlock(periph); 853 return (ENXIO); 854 } 855 break; 856 } 857 858 case CHIOSETVOLTAG: 859 { 860 error = chsetvoltag(periph, 861 (struct changer_set_voltag_request *) addr); 862 break; 863 } 864 865 /* Implement prevent/allow? */ 866 867 default: 868 error = cam_periph_ioctl(periph, cmd, addr, cherror); 869 break; 870 } 871 872 cam_periph_unlock(periph); 873 return (error); 874} 875 876static int 877chmove(struct cam_periph *periph, struct changer_move *cm) 878{ 879 struct ch_softc *softc; 880 u_int16_t fromelem, toelem; 881 union ccb *ccb; 882 int error; 883 884 error = 0; 885 softc = (struct ch_softc *)periph->softc; 886 887 /* 888 * Check arguments. 889 */ 890 if ((cm->cm_fromtype > CHET_DT) || (cm->cm_totype > CHET_DT)) 891 return (EINVAL); 892 if ((cm->cm_fromunit > (softc->sc_counts[cm->cm_fromtype] - 1)) || 893 (cm->cm_tounit > (softc->sc_counts[cm->cm_totype] - 1))) 894 return (ENODEV); 895 896 /* 897 * Check the request against the changer's capabilities. 898 */ 899 if ((softc->sc_movemask[cm->cm_fromtype] & (1 << cm->cm_totype)) == 0) 900 return (ENODEV); 901 902 /* 903 * Calculate the source and destination elements. 904 */ 905 fromelem = softc->sc_firsts[cm->cm_fromtype] + cm->cm_fromunit; 906 toelem = softc->sc_firsts[cm->cm_totype] + cm->cm_tounit; 907 908 ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL); 909 910 scsi_move_medium(&ccb->csio, 911 /* retries */ 1, 912 /* cbfcnp */ chdone, 913 /* tag_action */ MSG_SIMPLE_Q_TAG, 914 /* tea */ softc->sc_picker, 915 /* src */ fromelem, 916 /* dst */ toelem, 917 /* invert */ (cm->cm_flags & CM_INVERT) ? TRUE : FALSE, 918 /* sense_len */ SSD_FULL_SIZE, 919 /* timeout */ CH_TIMEOUT_MOVE_MEDIUM); 920 921 error = cam_periph_runccb(ccb, cherror, /*cam_flags*/CAM_RETRY_SELTO, 922 /*sense_flags*/ SF_RETRY_UA, 923 softc->device_stats); 924 925 xpt_release_ccb(ccb); 926 927 return(error); 928} 929 930static int 931chexchange(struct cam_periph *periph, struct changer_exchange *ce) 932{ 933 struct ch_softc *softc; 934 u_int16_t src, dst1, dst2; 935 union ccb *ccb; 936 int error; 937 938 error = 0; 939 softc = (struct ch_softc *)periph->softc; 940 /* 941 * Check arguments. 942 */ 943 if ((ce->ce_srctype > CHET_DT) || (ce->ce_fdsttype > CHET_DT) || 944 (ce->ce_sdsttype > CHET_DT)) 945 return (EINVAL); 946 if ((ce->ce_srcunit > (softc->sc_counts[ce->ce_srctype] - 1)) || 947 (ce->ce_fdstunit > (softc->sc_counts[ce->ce_fdsttype] - 1)) || 948 (ce->ce_sdstunit > (softc->sc_counts[ce->ce_sdsttype] - 1))) 949 return (ENODEV); 950 951 /* 952 * Check the request against the changer's capabilities. 953 */ 954 if (((softc->sc_exchangemask[ce->ce_srctype] & 955 (1 << ce->ce_fdsttype)) == 0) || 956 ((softc->sc_exchangemask[ce->ce_fdsttype] & 957 (1 << ce->ce_sdsttype)) == 0)) 958 return (ENODEV); 959 960 /* 961 * Calculate the source and destination elements. 962 */ 963 src = softc->sc_firsts[ce->ce_srctype] + ce->ce_srcunit; 964 dst1 = softc->sc_firsts[ce->ce_fdsttype] + ce->ce_fdstunit; 965 dst2 = softc->sc_firsts[ce->ce_sdsttype] + ce->ce_sdstunit; 966 967 ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL); 968 969 scsi_exchange_medium(&ccb->csio, 970 /* retries */ 1, 971 /* cbfcnp */ chdone, 972 /* tag_action */ MSG_SIMPLE_Q_TAG, 973 /* tea */ softc->sc_picker, 974 /* src */ src, 975 /* dst1 */ dst1, 976 /* dst2 */ dst2, 977 /* invert1 */ (ce->ce_flags & CE_INVERT1) ? 978 TRUE : FALSE, 979 /* invert2 */ (ce->ce_flags & CE_INVERT2) ? 980 TRUE : FALSE, 981 /* sense_len */ SSD_FULL_SIZE, 982 /* timeout */ CH_TIMEOUT_EXCHANGE_MEDIUM); 983 984 error = cam_periph_runccb(ccb, cherror, /*cam_flags*/CAM_RETRY_SELTO, 985 /*sense_flags*/ SF_RETRY_UA, 986 softc->device_stats); 987 988 xpt_release_ccb(ccb); 989 990 return(error); 991} 992 993static int 994chposition(struct cam_periph *periph, struct changer_position *cp) 995{ 996 struct ch_softc *softc; 997 u_int16_t dst; 998 union ccb *ccb; 999 int error; 1000 1001 error = 0; 1002 softc = (struct ch_softc *)periph->softc; 1003 1004 /* 1005 * Check arguments. 1006 */ 1007 if (cp->cp_type > CHET_DT) 1008 return (EINVAL); 1009 if (cp->cp_unit > (softc->sc_counts[cp->cp_type] - 1)) 1010 return (ENODEV); 1011 1012 /* 1013 * Calculate the destination element. 1014 */ 1015 dst = softc->sc_firsts[cp->cp_type] + cp->cp_unit; 1016 1017 ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL); 1018 1019 scsi_position_to_element(&ccb->csio, 1020 /* retries */ 1, 1021 /* cbfcnp */ chdone, 1022 /* tag_action */ MSG_SIMPLE_Q_TAG, 1023 /* tea */ softc->sc_picker, 1024 /* dst */ dst, 1025 /* invert */ (cp->cp_flags & CP_INVERT) ? 1026 TRUE : FALSE, 1027 /* sense_len */ SSD_FULL_SIZE, 1028 /* timeout */ CH_TIMEOUT_POSITION_TO_ELEMENT); 1029 1030 error = cam_periph_runccb(ccb, cherror, /*cam_flags*/ CAM_RETRY_SELTO, 1031 /*sense_flags*/ SF_RETRY_UA, 1032 softc->device_stats); 1033 1034 xpt_release_ccb(ccb); 1035 1036 return(error); 1037} 1038 1039/* 1040 * Copy a volume tag to a volume_tag struct, converting SCSI byte order 1041 * to host native byte order in the volume serial number. The volume 1042 * label as returned by the changer is transferred to user mode as 1043 * nul-terminated string. Volume labels are truncated at the first 1044 * space, as suggested by SCSI-2. 1045 */ 1046static void 1047copy_voltag(struct changer_voltag *uvoltag, struct volume_tag *voltag) 1048{ 1049 int i; 1050 for (i=0; i<CH_VOLTAG_MAXLEN; i++) { 1051 char c = voltag->vif[i]; 1052 if (c && c != ' ') 1053 uvoltag->cv_volid[i] = c; 1054 else 1055 break; 1056 } 1057 uvoltag->cv_serial = scsi_2btoul(voltag->vsn); 1058} 1059 1060/* 1061 * Copy an element status descriptor to a user-mode 1062 * changer_element_status structure. 1063 */ 1064static void 1065copy_element_status(struct ch_softc *softc, 1066 u_int16_t flags, 1067 struct read_element_status_descriptor *desc, 1068 struct changer_element_status *ces, 1069 int scsi_version) 1070{ 1071 u_int16_t eaddr = scsi_2btoul(desc->eaddr); 1072 u_int16_t et; 1073 struct volume_tag *pvol_tag = NULL, *avol_tag = NULL; 1074 struct read_element_status_device_id *devid = NULL; 1075 1076 ces->ces_int_addr = eaddr; 1077 /* set up logical address in element status */ 1078 for (et = CHET_MT; et <= CHET_DT; et++) { 1079 if ((softc->sc_firsts[et] <= eaddr) 1080 && ((softc->sc_firsts[et] + softc->sc_counts[et]) 1081 > eaddr)) { 1082 ces->ces_addr = eaddr - softc->sc_firsts[et]; 1083 ces->ces_type = et; 1084 break; 1085 } 1086 } 1087 1088 ces->ces_flags = desc->flags1; 1089 1090 ces->ces_sensecode = desc->sense_code; 1091 ces->ces_sensequal = desc->sense_qual; 1092 1093 if (desc->flags2 & READ_ELEMENT_STATUS_INVERT) 1094 ces->ces_flags |= CES_INVERT; 1095 1096 if (desc->flags2 & READ_ELEMENT_STATUS_SVALID) { 1097 1098 eaddr = scsi_2btoul(desc->ssea); 1099 1100 /* convert source address to logical format */ 1101 for (et = CHET_MT; et <= CHET_DT; et++) { 1102 if ((softc->sc_firsts[et] <= eaddr) 1103 && ((softc->sc_firsts[et] + softc->sc_counts[et]) 1104 > eaddr)) { 1105 ces->ces_source_addr = 1106 eaddr - softc->sc_firsts[et]; 1107 ces->ces_source_type = et; 1108 ces->ces_flags |= CES_SOURCE_VALID; 1109 break; 1110 } 1111 } 1112 1113 if (!(ces->ces_flags & CES_SOURCE_VALID)) 1114 printf("ch: warning: could not map element source " 1115 "address %ud to a valid element type\n", 1116 eaddr); 1117 } 1118 1119 /* 1120 * pvoltag and avoltag are common between SCSI-2 and later versions 1121 */ 1122 if (flags & READ_ELEMENT_STATUS_PVOLTAG) 1123 pvol_tag = &desc->voltag_devid.pvoltag; 1124 if (flags & READ_ELEMENT_STATUS_AVOLTAG) 1125 avol_tag = (flags & READ_ELEMENT_STATUS_PVOLTAG) ? 1126 &desc->voltag_devid.voltag[1] :&desc->voltag_devid.pvoltag; 1127 /* 1128 * For SCSI-3 and later, element status can carry designator and 1129 * other information. 1130 */ 1131 if (scsi_version >= SCSI_REV_SPC) { 1132 if ((flags & READ_ELEMENT_STATUS_PVOLTAG) ^ 1133 (flags & READ_ELEMENT_STATUS_AVOLTAG)) 1134 devid = &desc->voltag_devid.pvol_and_devid.devid; 1135 else if (!(flags & READ_ELEMENT_STATUS_PVOLTAG) && 1136 !(flags & READ_ELEMENT_STATUS_AVOLTAG)) 1137 devid = &desc->voltag_devid.devid; 1138 else /* Have both PVOLTAG and AVOLTAG */ 1139 devid = &desc->voltag_devid.vol_tags_and_devid.devid; 1140 } 1141 1142 if (pvol_tag) 1143 copy_voltag(&(ces->ces_pvoltag), pvol_tag); 1144 if (avol_tag) 1145 copy_voltag(&(ces->ces_pvoltag), avol_tag); 1146 if (devid != NULL) { 1147 if (devid->designator_length > 0) { 1148 bcopy((void *)devid->designator, 1149 (void *)ces->ces_designator, 1150 devid->designator_length); 1151 ces->ces_designator_length = devid->designator_length; 1152 /* 1153 * Make sure we are always NUL terminated. The 1154 * This won't matter for the binary code set, 1155 * since the user will only pay attention to the 1156 * length field. 1157 */ 1158 ces->ces_designator[devid->designator_length]= '\0'; 1159 } 1160 if (devid->piv_assoc_designator_type & 1161 READ_ELEMENT_STATUS_PIV_SET) { 1162 ces->ces_flags |= CES_PIV; 1163 ces->ces_protocol_id = 1164 READ_ELEMENT_STATUS_PROTOCOL_ID( 1165 devid->prot_code_set); 1166 } 1167 ces->ces_code_set = 1168 READ_ELEMENT_STATUS_CODE_SET(devid->prot_code_set); 1169 ces->ces_assoc = READ_ELEMENT_STATUS_ASSOCIATION( 1170 devid->piv_assoc_designator_type); 1171 ces->ces_designator_type = READ_ELEMENT_STATUS_DESIGNATOR_TYPE( 1172 devid->piv_assoc_designator_type); 1173 } else if (scsi_version > SCSI_REV_2) { 1174 /* SCSI-SPC and No devid, no designator */ 1175 ces->ces_designator_length = 0; 1176 ces->ces_designator[0] = '\0'; 1177 ces->ces_protocol_id = CES_PROTOCOL_ID_FCP_4; 1178 } 1179 1180 if (scsi_version <= SCSI_REV_2) { 1181 if (desc->dt_or_obsolete.scsi_2.dt_scsi_flags & 1182 READ_ELEMENT_STATUS_DT_IDVALID) { 1183 ces->ces_flags |= CES_SCSIID_VALID; 1184 ces->ces_scsi_id = 1185 desc->dt_or_obsolete.scsi_2.dt_scsi_addr; 1186 } 1187 1188 if (desc->dt_or_obsolete.scsi_2.dt_scsi_addr & 1189 READ_ELEMENT_STATUS_DT_LUVALID) { 1190 ces->ces_flags |= CES_LUN_VALID; 1191 ces->ces_scsi_lun = 1192 desc->dt_or_obsolete.scsi_2.dt_scsi_flags & 1193 READ_ELEMENT_STATUS_DT_LUNMASK; 1194 } 1195 } 1196} 1197 1198static int 1199chgetelemstatus(struct cam_periph *periph, int scsi_version, u_long cmd, 1200 struct changer_element_status_request *cesr) 1201{ 1202 struct read_element_status_header *st_hdr; 1203 struct read_element_status_page_header *pg_hdr; 1204 struct read_element_status_descriptor *desc; 1205 caddr_t data = NULL; 1206 size_t size, desclen; 1207 int avail, i, error = 0; 1208 int curdata, dvcid, sense_flags; 1209 int try_no_dvcid = 0; 1210 struct changer_element_status *user_data = NULL; 1211 struct ch_softc *softc; 1212 union ccb *ccb; 1213 int chet = cesr->cesr_element_type; 1214 int want_voltags = (cesr->cesr_flags & CESR_VOLTAGS) ? 1 : 0; 1215 1216 softc = (struct ch_softc *)periph->softc; 1217 1218 /* perform argument checking */ 1219 1220 /* 1221 * Perform a range check on the cesr_element_{base,count} 1222 * request argument fields. 1223 */ 1224 if ((softc->sc_counts[chet] - cesr->cesr_element_base) <= 0 1225 || (cesr->cesr_element_base + cesr->cesr_element_count) 1226 > softc->sc_counts[chet]) 1227 return (EINVAL); 1228 1229 /* 1230 * Request one descriptor for the given element type. This 1231 * is used to determine the size of the descriptor so that 1232 * we can allocate enough storage for all of them. We assume 1233 * that the first one can fit into 1k. 1234 */ 1235 cam_periph_unlock(periph); 1236 data = (caddr_t)malloc(1024, M_DEVBUF, M_WAITOK); 1237 1238 cam_periph_lock(periph); 1239 ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL); 1240 1241 sense_flags = SF_RETRY_UA; 1242 if (softc->quirks & CH_Q_NO_DVCID) { 1243 dvcid = 0; 1244 curdata = 0; 1245 } else { 1246 dvcid = 1; 1247 curdata = 1; 1248 /* 1249 * Don't print anything for an Illegal Request, because 1250 * these flags can cause some changers to complain. We'll 1251 * retry without them if we get an error. 1252 */ 1253 sense_flags |= SF_QUIET_IR; 1254 } 1255 1256retry_einval: 1257 1258 scsi_read_element_status(&ccb->csio, 1259 /* retries */ 1, 1260 /* cbfcnp */ chdone, 1261 /* tag_action */ MSG_SIMPLE_Q_TAG, 1262 /* voltag */ want_voltags, 1263 /* sea */ softc->sc_firsts[chet], 1264 /* curdata */ curdata, 1265 /* dvcid */ dvcid, 1266 /* count */ 1, 1267 /* data_ptr */ data, 1268 /* dxfer_len */ 1024, 1269 /* sense_len */ SSD_FULL_SIZE, 1270 /* timeout */ CH_TIMEOUT_READ_ELEMENT_STATUS); 1271 1272 error = cam_periph_runccb(ccb, cherror, /*cam_flags*/ CAM_RETRY_SELTO, 1273 /*sense_flags*/ sense_flags, 1274 softc->device_stats); 1275 1276 /* 1277 * An Illegal Request sense key (only used if there is no asc/ascq) 1278 * or 0x24,0x00 for an ASC/ASCQ both map to EINVAL. If dvcid or 1279 * curdata are set (we set both or neither), try turning them off 1280 * and see if the command is successful. 1281 */ 1282 if ((error == EINVAL) 1283 && (dvcid || curdata)) { 1284 dvcid = 0; 1285 curdata = 0; 1286 error = 0; 1287 /* At this point we want to report any Illegal Request */ 1288 sense_flags &= ~SF_QUIET_IR; 1289 try_no_dvcid = 1; 1290 goto retry_einval; 1291 } 1292 1293 /* 1294 * In this case, we tried a read element status with dvcid and 1295 * curdata set, and it failed. We retried without those bits, and 1296 * it succeeded. Suggest to the user that he set a quirk, so we 1297 * don't go through the retry process the first time in the future. 1298 * This should only happen on changers that claim SCSI-3 or higher, 1299 * but don't support these bits. 1300 */ 1301 if ((try_no_dvcid != 0) 1302 && (error == 0)) 1303 softc->quirks |= CH_Q_NO_DVCID; 1304 1305 if (error) 1306 goto done; 1307 cam_periph_unlock(periph); 1308 1309 st_hdr = (struct read_element_status_header *)data; 1310 pg_hdr = (struct read_element_status_page_header *)((uintptr_t)st_hdr + 1311 sizeof(struct read_element_status_header)); 1312 desclen = scsi_2btoul(pg_hdr->edl); 1313 1314 size = sizeof(struct read_element_status_header) + 1315 sizeof(struct read_element_status_page_header) + 1316 (desclen * cesr->cesr_element_count); 1317 /* 1318 * Reallocate storage for descriptors and get them from the 1319 * device. 1320 */ 1321 free(data, M_DEVBUF); 1322 data = (caddr_t)malloc(size, M_DEVBUF, M_WAITOK); 1323 1324 cam_periph_lock(periph); 1325 scsi_read_element_status(&ccb->csio, 1326 /* retries */ 1, 1327 /* cbfcnp */ chdone, 1328 /* tag_action */ MSG_SIMPLE_Q_TAG, 1329 /* voltag */ want_voltags, 1330 /* sea */ softc->sc_firsts[chet] 1331 + cesr->cesr_element_base, 1332 /* curdata */ curdata, 1333 /* dvcid */ dvcid, 1334 /* count */ cesr->cesr_element_count, 1335 /* data_ptr */ data, 1336 /* dxfer_len */ size, 1337 /* sense_len */ SSD_FULL_SIZE, 1338 /* timeout */ CH_TIMEOUT_READ_ELEMENT_STATUS); 1339 1340 error = cam_periph_runccb(ccb, cherror, /*cam_flags*/ CAM_RETRY_SELTO, 1341 /*sense_flags*/ SF_RETRY_UA, 1342 softc->device_stats); 1343 1344 if (error) 1345 goto done; 1346 cam_periph_unlock(periph); 1347 1348 /* 1349 * Fill in the user status array. 1350 */ 1351 st_hdr = (struct read_element_status_header *)data; 1352 pg_hdr = (struct read_element_status_page_header *)((uintptr_t)st_hdr + 1353 sizeof(struct read_element_status_header)); 1354 avail = scsi_2btoul(st_hdr->count); 1355 1356 if (avail != cesr->cesr_element_count) { 1357 xpt_print(periph->path, 1358 "warning, READ ELEMENT STATUS avail != count\n"); 1359 } 1360 1361 user_data = (struct changer_element_status *) 1362 malloc(avail * sizeof(struct changer_element_status), 1363 M_DEVBUF, M_WAITOK | M_ZERO); 1364 1365 desc = (struct read_element_status_descriptor *)((uintptr_t)data + 1366 sizeof(struct read_element_status_header) + 1367 sizeof(struct read_element_status_page_header)); 1368 /* 1369 * Set up the individual element status structures 1370 */ 1371 for (i = 0; i < avail; ++i) { 1372 struct changer_element_status *ces; 1373 1374 /* 1375 * In the changer_element_status structure, fields from 1376 * the beginning to the field of ces_scsi_lun are common 1377 * between SCSI-2 and SCSI-3, while all the rest are new 1378 * from SCSI-3. In order to maintain backward compatibility 1379 * of the chio command, the ces pointer, below, is computed 1380 * such that it lines up with the structure boundary 1381 * corresponding to the SCSI version. 1382 */ 1383 ces = cmd == OCHIOGSTATUS ? 1384 (struct changer_element_status *) 1385 ((unsigned char *)user_data + i * 1386 (offsetof(struct changer_element_status,ces_scsi_lun)+1)): 1387 &user_data[i]; 1388 1389 copy_element_status(softc, pg_hdr->flags, desc, 1390 ces, scsi_version); 1391 1392 desc = (struct read_element_status_descriptor *) 1393 ((unsigned char *)desc + desclen); 1394 } 1395 1396 /* Copy element status structures out to userspace. */ 1397 if (cmd == OCHIOGSTATUS) 1398 error = copyout(user_data, 1399 cesr->cesr_element_status, 1400 avail* (offsetof(struct changer_element_status, 1401 ces_scsi_lun) + 1)); 1402 else 1403 error = copyout(user_data, 1404 cesr->cesr_element_status, 1405 avail * sizeof(struct changer_element_status)); 1406 1407 cam_periph_lock(periph); 1408 1409 done: 1410 xpt_release_ccb(ccb); 1411 1412 if (data != NULL) 1413 free(data, M_DEVBUF); 1414 if (user_data != NULL) 1415 free(user_data, M_DEVBUF); 1416 1417 return (error); 1418} 1419 1420static int 1421chielem(struct cam_periph *periph, 1422 unsigned int timeout) 1423{ 1424 union ccb *ccb; 1425 struct ch_softc *softc; 1426 int error; 1427 1428 if (!timeout) { 1429 timeout = CH_TIMEOUT_INITIALIZE_ELEMENT_STATUS; 1430 } else { 1431 timeout *= 1000; 1432 } 1433 1434 error = 0; 1435 softc = (struct ch_softc *)periph->softc; 1436 1437 ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL); 1438 1439 scsi_initialize_element_status(&ccb->csio, 1440 /* retries */ 1, 1441 /* cbfcnp */ chdone, 1442 /* tag_action */ MSG_SIMPLE_Q_TAG, 1443 /* sense_len */ SSD_FULL_SIZE, 1444 /* timeout */ timeout); 1445 1446 error = cam_periph_runccb(ccb, cherror, /*cam_flags*/ CAM_RETRY_SELTO, 1447 /*sense_flags*/ SF_RETRY_UA, 1448 softc->device_stats); 1449 1450 xpt_release_ccb(ccb); 1451 1452 return(error); 1453} 1454 1455static int 1456chsetvoltag(struct cam_periph *periph, 1457 struct changer_set_voltag_request *csvr) 1458{ 1459 union ccb *ccb; 1460 struct ch_softc *softc; 1461 u_int16_t ea; 1462 u_int8_t sac; 1463 struct scsi_send_volume_tag_parameters ssvtp; 1464 int error; 1465 int i; 1466 1467 error = 0; 1468 softc = (struct ch_softc *)periph->softc; 1469 1470 bzero(&ssvtp, sizeof(ssvtp)); 1471 for (i=0; i<sizeof(ssvtp.vitf); i++) { 1472 ssvtp.vitf[i] = ' '; 1473 } 1474 1475 /* 1476 * Check arguments. 1477 */ 1478 if (csvr->csvr_type > CHET_DT) 1479 return EINVAL; 1480 if (csvr->csvr_addr > (softc->sc_counts[csvr->csvr_type] - 1)) 1481 return ENODEV; 1482 1483 ea = softc->sc_firsts[csvr->csvr_type] + csvr->csvr_addr; 1484 1485 if (csvr->csvr_flags & CSVR_ALTERNATE) { 1486 switch (csvr->csvr_flags & CSVR_MODE_MASK) { 1487 case CSVR_MODE_SET: 1488 sac = SEND_VOLUME_TAG_ASSERT_ALTERNATE; 1489 break; 1490 case CSVR_MODE_REPLACE: 1491 sac = SEND_VOLUME_TAG_REPLACE_ALTERNATE; 1492 break; 1493 case CSVR_MODE_CLEAR: 1494 sac = SEND_VOLUME_TAG_UNDEFINED_ALTERNATE; 1495 break; 1496 default: 1497 error = EINVAL; 1498 goto out; 1499 } 1500 } else { 1501 switch (csvr->csvr_flags & CSVR_MODE_MASK) { 1502 case CSVR_MODE_SET: 1503 sac = SEND_VOLUME_TAG_ASSERT_PRIMARY; 1504 break; 1505 case CSVR_MODE_REPLACE: 1506 sac = SEND_VOLUME_TAG_REPLACE_PRIMARY; 1507 break; 1508 case CSVR_MODE_CLEAR: 1509 sac = SEND_VOLUME_TAG_UNDEFINED_PRIMARY; 1510 break; 1511 default: 1512 error = EINVAL; 1513 goto out; 1514 } 1515 } 1516 1517 memcpy(ssvtp.vitf, csvr->csvr_voltag.cv_volid, 1518 min(strlen(csvr->csvr_voltag.cv_volid), sizeof(ssvtp.vitf))); 1519 scsi_ulto2b(csvr->csvr_voltag.cv_serial, ssvtp.minvsn); 1520 1521 ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL); 1522 1523 scsi_send_volume_tag(&ccb->csio, 1524 /* retries */ 1, 1525 /* cbfcnp */ chdone, 1526 /* tag_action */ MSG_SIMPLE_Q_TAG, 1527 /* element_address */ ea, 1528 /* send_action_code */ sac, 1529 /* parameters */ &ssvtp, 1530 /* sense_len */ SSD_FULL_SIZE, 1531 /* timeout */ CH_TIMEOUT_SEND_VOLTAG); 1532 1533 error = cam_periph_runccb(ccb, cherror, /*cam_flags*/ CAM_RETRY_SELTO, 1534 /*sense_flags*/ SF_RETRY_UA, 1535 softc->device_stats); 1536 1537 xpt_release_ccb(ccb); 1538 1539 out: 1540 return error; 1541} 1542 1543static int 1544chgetparams(struct cam_periph *periph) 1545{ 1546 union ccb *ccb; 1547 struct ch_softc *softc; 1548 void *mode_buffer; 1549 int mode_buffer_len; 1550 struct page_element_address_assignment *ea; 1551 struct page_device_capabilities *cap; 1552 int error, from, dbd; 1553 u_int8_t *moves, *exchanges; 1554 1555 error = 0; 1556 1557 softc = (struct ch_softc *)periph->softc; 1558 1559 ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL); 1560 1561 /* 1562 * The scsi_mode_sense_data structure is just a convenience 1563 * structure that allows us to easily calculate the worst-case 1564 * storage size of the mode sense buffer. 1565 */ 1566 mode_buffer_len = sizeof(struct scsi_mode_sense_data); 1567 1568 mode_buffer = malloc(mode_buffer_len, M_SCSICH, M_NOWAIT); 1569 1570 if (mode_buffer == NULL) { 1571 printf("chgetparams: couldn't malloc mode sense data\n"); 1572 return(ENOSPC); 1573 } 1574 1575 bzero(mode_buffer, mode_buffer_len); 1576 1577 if (softc->quirks & CH_Q_NO_DBD) 1578 dbd = FALSE; 1579 else 1580 dbd = TRUE; 1581 1582 /* 1583 * Get the element address assignment page. 1584 */ 1585 scsi_mode_sense(&ccb->csio, 1586 /* retries */ 1, 1587 /* cbfcnp */ chdone, 1588 /* tag_action */ MSG_SIMPLE_Q_TAG, 1589 /* dbd */ dbd, 1590 /* pc */ SMS_PAGE_CTRL_CURRENT, 1591 /* page */ CH_ELEMENT_ADDR_ASSIGN_PAGE, 1592 /* param_buf */ (u_int8_t *)mode_buffer, 1593 /* param_len */ mode_buffer_len, 1594 /* sense_len */ SSD_FULL_SIZE, 1595 /* timeout */ CH_TIMEOUT_MODE_SENSE); 1596 1597 error = cam_periph_runccb(ccb, cherror, /*cam_flags*/ CAM_RETRY_SELTO, 1598 /* sense_flags */ SF_RETRY_UA|SF_NO_PRINT, 1599 softc->device_stats); 1600 1601 if (error) { 1602 if (dbd) { 1603 struct scsi_mode_sense_6 *sms; 1604 1605 sms = (struct scsi_mode_sense_6 *) 1606 ccb->csio.cdb_io.cdb_bytes; 1607 1608 sms->byte2 &= ~SMS_DBD; 1609 error = cam_periph_runccb(ccb, cherror, 1610 /*cam_flags*/ CAM_RETRY_SELTO, 1611 /*sense_flags*/ SF_RETRY_UA, 1612 softc->device_stats); 1613 } else { 1614 /* 1615 * Since we disabled sense printing above, print 1616 * out the sense here since we got an error. 1617 */ 1618 scsi_sense_print(&ccb->csio); 1619 } 1620 1621 if (error) { 1622 xpt_print(periph->path, 1623 "chgetparams: error getting element " 1624 "address page\n"); 1625 xpt_release_ccb(ccb); 1626 free(mode_buffer, M_SCSICH); 1627 return(error); 1628 } 1629 } 1630 1631 ea = (struct page_element_address_assignment *) 1632 find_mode_page_6((struct scsi_mode_header_6 *)mode_buffer); 1633 1634 softc->sc_firsts[CHET_MT] = scsi_2btoul(ea->mtea); 1635 softc->sc_counts[CHET_MT] = scsi_2btoul(ea->nmte); 1636 softc->sc_firsts[CHET_ST] = scsi_2btoul(ea->fsea); 1637 softc->sc_counts[CHET_ST] = scsi_2btoul(ea->nse); 1638 softc->sc_firsts[CHET_IE] = scsi_2btoul(ea->fieea); 1639 softc->sc_counts[CHET_IE] = scsi_2btoul(ea->niee); 1640 softc->sc_firsts[CHET_DT] = scsi_2btoul(ea->fdtea); 1641 softc->sc_counts[CHET_DT] = scsi_2btoul(ea->ndte); 1642 1643 bzero(mode_buffer, mode_buffer_len); 1644 1645 /* 1646 * Now get the device capabilities page. 1647 */ 1648 scsi_mode_sense(&ccb->csio, 1649 /* retries */ 1, 1650 /* cbfcnp */ chdone, 1651 /* tag_action */ MSG_SIMPLE_Q_TAG, 1652 /* dbd */ dbd, 1653 /* pc */ SMS_PAGE_CTRL_CURRENT, 1654 /* page */ CH_DEVICE_CAP_PAGE, 1655 /* param_buf */ (u_int8_t *)mode_buffer, 1656 /* param_len */ mode_buffer_len, 1657 /* sense_len */ SSD_FULL_SIZE, 1658 /* timeout */ CH_TIMEOUT_MODE_SENSE); 1659 1660 error = cam_periph_runccb(ccb, cherror, /*cam_flags*/ CAM_RETRY_SELTO, 1661 /* sense_flags */ SF_RETRY_UA | SF_NO_PRINT, 1662 softc->device_stats); 1663 1664 if (error) { 1665 if (dbd) { 1666 struct scsi_mode_sense_6 *sms; 1667 1668 sms = (struct scsi_mode_sense_6 *) 1669 ccb->csio.cdb_io.cdb_bytes; 1670 1671 sms->byte2 &= ~SMS_DBD; 1672 error = cam_periph_runccb(ccb, cherror, 1673 /*cam_flags*/ CAM_RETRY_SELTO, 1674 /*sense_flags*/ SF_RETRY_UA, 1675 softc->device_stats); 1676 } else { 1677 /* 1678 * Since we disabled sense printing above, print 1679 * out the sense here since we got an error. 1680 */ 1681 scsi_sense_print(&ccb->csio); 1682 } 1683 1684 if (error) { 1685 xpt_print(periph->path, 1686 "chgetparams: error getting device " 1687 "capabilities page\n"); 1688 xpt_release_ccb(ccb); 1689 free(mode_buffer, M_SCSICH); 1690 return(error); 1691 } 1692 } 1693 1694 xpt_release_ccb(ccb); 1695 1696 cap = (struct page_device_capabilities *) 1697 find_mode_page_6((struct scsi_mode_header_6 *)mode_buffer); 1698 1699 bzero(softc->sc_movemask, sizeof(softc->sc_movemask)); 1700 bzero(softc->sc_exchangemask, sizeof(softc->sc_exchangemask)); 1701 moves = cap->move_from; 1702 exchanges = cap->exchange_with; 1703 for (from = CHET_MT; from <= CHET_MAX; ++from) { 1704 softc->sc_movemask[from] = moves[from]; 1705 softc->sc_exchangemask[from] = exchanges[from]; 1706 } 1707 1708 free(mode_buffer, M_SCSICH); 1709 1710 return(error); 1711} 1712 1713static int 1714chscsiversion(struct cam_periph *periph) 1715{ 1716 struct scsi_inquiry_data *inq_data; 1717 struct ccb_getdev *cgd; 1718 int dev_scsi_version; 1719 1720 cam_periph_assert(periph, MA_OWNED); 1721 if ((cgd = (struct ccb_getdev *)xpt_alloc_ccb_nowait()) == NULL) 1722 return (-1); 1723 /* 1724 * Get the device information. 1725 */ 1726 xpt_setup_ccb(&cgd->ccb_h, 1727 periph->path, 1728 CAM_PRIORITY_NORMAL); 1729 cgd->ccb_h.func_code = XPT_GDEV_TYPE; 1730 xpt_action((union ccb *)cgd); 1731 1732 if (cgd->ccb_h.status != CAM_REQ_CMP) { 1733 xpt_free_ccb((union ccb *)cgd); 1734 return -1; 1735 } 1736 1737 inq_data = &cgd->inq_data; 1738 dev_scsi_version = inq_data->version; 1739 xpt_free_ccb((union ccb *)cgd); 1740 1741 return dev_scsi_version; 1742} 1743 1744void 1745scsi_move_medium(struct ccb_scsiio *csio, u_int32_t retries, 1746 void (*cbfcnp)(struct cam_periph *, union ccb *), 1747 u_int8_t tag_action, u_int32_t tea, u_int32_t src, 1748 u_int32_t dst, int invert, u_int8_t sense_len, 1749 u_int32_t timeout) 1750{ 1751 struct scsi_move_medium *scsi_cmd; 1752 1753 scsi_cmd = (struct scsi_move_medium *)&csio->cdb_io.cdb_bytes; 1754 bzero(scsi_cmd, sizeof(*scsi_cmd)); 1755 1756 scsi_cmd->opcode = MOVE_MEDIUM; 1757 1758 scsi_ulto2b(tea, scsi_cmd->tea); 1759 scsi_ulto2b(src, scsi_cmd->src); 1760 scsi_ulto2b(dst, scsi_cmd->dst); 1761 1762 if (invert) 1763 scsi_cmd->invert |= MOVE_MEDIUM_INVERT; 1764 1765 cam_fill_csio(csio, 1766 retries, 1767 cbfcnp, 1768 /*flags*/ CAM_DIR_NONE, 1769 tag_action, 1770 /*data_ptr*/ NULL, 1771 /*dxfer_len*/ 0, 1772 sense_len, 1773 sizeof(*scsi_cmd), 1774 timeout); 1775} 1776 1777void 1778scsi_exchange_medium(struct ccb_scsiio *csio, u_int32_t retries, 1779 void (*cbfcnp)(struct cam_periph *, union ccb *), 1780 u_int8_t tag_action, u_int32_t tea, u_int32_t src, 1781 u_int32_t dst1, u_int32_t dst2, int invert1, 1782 int invert2, u_int8_t sense_len, u_int32_t timeout) 1783{ 1784 struct scsi_exchange_medium *scsi_cmd; 1785 1786 scsi_cmd = (struct scsi_exchange_medium *)&csio->cdb_io.cdb_bytes; 1787 bzero(scsi_cmd, sizeof(*scsi_cmd)); 1788 1789 scsi_cmd->opcode = EXCHANGE_MEDIUM; 1790 1791 scsi_ulto2b(tea, scsi_cmd->tea); 1792 scsi_ulto2b(src, scsi_cmd->src); 1793 scsi_ulto2b(dst1, scsi_cmd->fdst); 1794 scsi_ulto2b(dst2, scsi_cmd->sdst); 1795 1796 if (invert1) 1797 scsi_cmd->invert |= EXCHANGE_MEDIUM_INV1; 1798 1799 if (invert2) 1800 scsi_cmd->invert |= EXCHANGE_MEDIUM_INV2; 1801 1802 cam_fill_csio(csio, 1803 retries, 1804 cbfcnp, 1805 /*flags*/ CAM_DIR_NONE, 1806 tag_action, 1807 /*data_ptr*/ NULL, 1808 /*dxfer_len*/ 0, 1809 sense_len, 1810 sizeof(*scsi_cmd), 1811 timeout); 1812} 1813 1814void 1815scsi_position_to_element(struct ccb_scsiio *csio, u_int32_t retries, 1816 void (*cbfcnp)(struct cam_periph *, union ccb *), 1817 u_int8_t tag_action, u_int32_t tea, u_int32_t dst, 1818 int invert, u_int8_t sense_len, u_int32_t timeout) 1819{ 1820 struct scsi_position_to_element *scsi_cmd; 1821 1822 scsi_cmd = (struct scsi_position_to_element *)&csio->cdb_io.cdb_bytes; 1823 bzero(scsi_cmd, sizeof(*scsi_cmd)); 1824 1825 scsi_cmd->opcode = POSITION_TO_ELEMENT; 1826 1827 scsi_ulto2b(tea, scsi_cmd->tea); 1828 scsi_ulto2b(dst, scsi_cmd->dst); 1829 1830 if (invert) 1831 scsi_cmd->invert |= POSITION_TO_ELEMENT_INVERT; 1832 1833 cam_fill_csio(csio, 1834 retries, 1835 cbfcnp, 1836 /*flags*/ CAM_DIR_NONE, 1837 tag_action, 1838 /*data_ptr*/ NULL, 1839 /*dxfer_len*/ 0, 1840 sense_len, 1841 sizeof(*scsi_cmd), 1842 timeout); 1843} 1844 1845void 1846scsi_read_element_status(struct ccb_scsiio *csio, u_int32_t retries, 1847 void (*cbfcnp)(struct cam_periph *, union ccb *), 1848 u_int8_t tag_action, int voltag, u_int32_t sea, 1849 int curdata, int dvcid, 1850 u_int32_t count, u_int8_t *data_ptr, 1851 u_int32_t dxfer_len, u_int8_t sense_len, 1852 u_int32_t timeout) 1853{ 1854 struct scsi_read_element_status *scsi_cmd; 1855 1856 scsi_cmd = (struct scsi_read_element_status *)&csio->cdb_io.cdb_bytes; 1857 bzero(scsi_cmd, sizeof(*scsi_cmd)); 1858 1859 scsi_cmd->opcode = READ_ELEMENT_STATUS; 1860 1861 scsi_ulto2b(sea, scsi_cmd->sea); 1862 scsi_ulto2b(count, scsi_cmd->count); 1863 scsi_ulto3b(dxfer_len, scsi_cmd->len); 1864 if (dvcid) 1865 scsi_cmd->flags |= READ_ELEMENT_STATUS_DVCID; 1866 if (curdata) 1867 scsi_cmd->flags |= READ_ELEMENT_STATUS_CURDATA; 1868 1869 if (voltag) 1870 scsi_cmd->byte2 |= READ_ELEMENT_STATUS_VOLTAG; 1871 1872 cam_fill_csio(csio, 1873 retries, 1874 cbfcnp, 1875 /*flags*/ CAM_DIR_IN, 1876 tag_action, 1877 data_ptr, 1878 dxfer_len, 1879 sense_len, 1880 sizeof(*scsi_cmd), 1881 timeout); 1882} 1883 1884void 1885scsi_initialize_element_status(struct ccb_scsiio *csio, u_int32_t retries, 1886 void (*cbfcnp)(struct cam_periph *, union ccb *), 1887 u_int8_t tag_action, u_int8_t sense_len, 1888 u_int32_t timeout) 1889{ 1890 struct scsi_initialize_element_status *scsi_cmd; 1891 1892 scsi_cmd = (struct scsi_initialize_element_status *) 1893 &csio->cdb_io.cdb_bytes; 1894 bzero(scsi_cmd, sizeof(*scsi_cmd)); 1895 1896 scsi_cmd->opcode = INITIALIZE_ELEMENT_STATUS; 1897 1898 cam_fill_csio(csio, 1899 retries, 1900 cbfcnp, 1901 /*flags*/ CAM_DIR_NONE, 1902 tag_action, 1903 /* data_ptr */ NULL, 1904 /* dxfer_len */ 0, 1905 sense_len, 1906 sizeof(*scsi_cmd), 1907 timeout); 1908} 1909 1910void 1911scsi_send_volume_tag(struct ccb_scsiio *csio, u_int32_t retries, 1912 void (*cbfcnp)(struct cam_periph *, union ccb *), 1913 u_int8_t tag_action, 1914 u_int16_t element_address, 1915 u_int8_t send_action_code, 1916 struct scsi_send_volume_tag_parameters *parameters, 1917 u_int8_t sense_len, u_int32_t timeout) 1918{ 1919 struct scsi_send_volume_tag *scsi_cmd; 1920 1921 scsi_cmd = (struct scsi_send_volume_tag *) &csio->cdb_io.cdb_bytes; 1922 bzero(scsi_cmd, sizeof(*scsi_cmd)); 1923 1924 scsi_cmd->opcode = SEND_VOLUME_TAG; 1925 scsi_ulto2b(element_address, scsi_cmd->ea); 1926 scsi_cmd->sac = send_action_code; 1927 scsi_ulto2b(sizeof(*parameters), scsi_cmd->pll); 1928 1929 cam_fill_csio(csio, 1930 retries, 1931 cbfcnp, 1932 /*flags*/ CAM_DIR_OUT, 1933 tag_action, 1934 /* data_ptr */ (u_int8_t *) parameters, 1935 sizeof(*parameters), 1936 sense_len, 1937 sizeof(*scsi_cmd), 1938 timeout); 1939} 1940