scsi_ch.c revision 257049
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 257049 2013-10-24 10:33:31Z 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_WAITING 121} ch_ccb_types; 122 123typedef enum { 124 CH_Q_NONE = 0x00, 125 CH_Q_NO_DBD = 0x01, 126 CH_Q_NO_DVCID = 0x02 127} ch_quirks; 128 129#define CH_Q_BIT_STRING \ 130 "\020" \ 131 "\001NO_DBD" \ 132 "\002NO_DVCID" 133 134#define ccb_state ppriv_field0 135#define ccb_bp ppriv_ptr1 136 137struct scsi_mode_sense_data { 138 struct scsi_mode_header_6 header; 139 struct scsi_mode_blk_desc blk_desc; 140 union { 141 struct page_element_address_assignment ea; 142 struct page_transport_geometry_parameters tg; 143 struct page_device_capabilities cap; 144 } pages; 145}; 146 147struct ch_softc { 148 ch_flags flags; 149 ch_state state; 150 ch_quirks quirks; 151 union ccb saved_ccb; 152 struct devstat *device_stats; 153 struct cdev *dev; 154 int open_count; 155 156 int sc_picker; /* current picker */ 157 158 /* 159 * The following information is obtained from the 160 * element address assignment page. 161 */ 162 int sc_firsts[CHET_MAX + 1]; /* firsts */ 163 int sc_counts[CHET_MAX + 1]; /* counts */ 164 165 /* 166 * The following mask defines the legal combinations 167 * of elements for the MOVE MEDIUM command. 168 */ 169 u_int8_t sc_movemask[CHET_MAX + 1]; 170 171 /* 172 * As above, but for EXCHANGE MEDIUM. 173 */ 174 u_int8_t sc_exchangemask[CHET_MAX + 1]; 175 176 /* 177 * Quirks; see below. XXX KDM not implemented yet 178 */ 179 int sc_settledelay; /* delay for settle */ 180}; 181 182static d_open_t chopen; 183static d_close_t chclose; 184static d_ioctl_t chioctl; 185static periph_init_t chinit; 186static periph_ctor_t chregister; 187static periph_oninv_t choninvalidate; 188static periph_dtor_t chcleanup; 189static periph_start_t chstart; 190static void chasync(void *callback_arg, u_int32_t code, 191 struct cam_path *path, void *arg); 192static void chdone(struct cam_periph *periph, 193 union ccb *done_ccb); 194static int cherror(union ccb *ccb, u_int32_t cam_flags, 195 u_int32_t sense_flags); 196static int chmove(struct cam_periph *periph, 197 struct changer_move *cm); 198static int chexchange(struct cam_periph *periph, 199 struct changer_exchange *ce); 200static int chposition(struct cam_periph *periph, 201 struct changer_position *cp); 202static int chgetelemstatus(struct cam_periph *periph, 203 int scsi_version, u_long cmd, 204 struct changer_element_status_request *csr); 205static int chsetvoltag(struct cam_periph *periph, 206 struct changer_set_voltag_request *csvr); 207static int chielem(struct cam_periph *periph, 208 unsigned int timeout); 209static int chgetparams(struct cam_periph *periph); 210static int chscsiversion(struct cam_periph *periph); 211 212static struct periph_driver chdriver = 213{ 214 chinit, "ch", 215 TAILQ_HEAD_INITIALIZER(chdriver.units), /* generation */ 0 216}; 217 218PERIPHDRIVER_DECLARE(ch, chdriver); 219 220static struct cdevsw ch_cdevsw = { 221 .d_version = D_VERSION, 222 .d_flags = D_TRACKCLOSE, 223 .d_open = chopen, 224 .d_close = chclose, 225 .d_ioctl = chioctl, 226 .d_name = "ch", 227}; 228 229static MALLOC_DEFINE(M_SCSICH, "scsi_ch", "scsi_ch buffers"); 230 231static void 232chinit(void) 233{ 234 cam_status status; 235 236 /* 237 * Install a global async callback. This callback will 238 * receive async callbacks like "new device found". 239 */ 240 status = xpt_register_async(AC_FOUND_DEVICE, chasync, NULL, NULL); 241 242 if (status != CAM_REQ_CMP) { 243 printf("ch: Failed to attach master async callback " 244 "due to status 0x%x!\n", status); 245 } 246} 247 248static void 249chdevgonecb(void *arg) 250{ 251 struct cam_sim *sim; 252 struct ch_softc *softc; 253 struct cam_periph *periph; 254 int i; 255 256 periph = (struct cam_periph *)arg; 257 sim = periph->sim; 258 softc = (struct ch_softc *)periph->softc; 259 260 KASSERT(softc->open_count >= 0, ("Negative open count %d", 261 softc->open_count)); 262 263 mtx_lock(sim->mtx); 264 265 /* 266 * When we get this callback, we will get no more close calls from 267 * devfs. So if we have any dangling opens, we need to release the 268 * reference held for that particular context. 269 */ 270 for (i = 0; i < softc->open_count; i++) 271 cam_periph_release_locked(periph); 272 273 softc->open_count = 0; 274 275 /* 276 * Release the reference held for the device node, it is gone now. 277 */ 278 cam_periph_release_locked(periph); 279 280 /* 281 * We reference the SIM lock directly here, instead of using 282 * cam_periph_unlock(). The reason is that the final call to 283 * cam_periph_release_locked() above could result in the periph 284 * getting freed. If that is the case, dereferencing the periph 285 * with a cam_periph_unlock() call would cause a page fault. 286 */ 287 mtx_unlock(sim->mtx); 288} 289 290static void 291choninvalidate(struct cam_periph *periph) 292{ 293 struct ch_softc *softc; 294 295 softc = (struct ch_softc *)periph->softc; 296 297 /* 298 * De-register any async callbacks. 299 */ 300 xpt_register_async(0, chasync, periph, periph->path); 301 302 softc->flags |= CH_FLAG_INVALID; 303 304 /* 305 * Tell devfs this device has gone away, and ask for a callback 306 * when it has cleaned up its state. 307 */ 308 destroy_dev_sched_cb(softc->dev, chdevgonecb, periph); 309} 310 311static void 312chcleanup(struct cam_periph *periph) 313{ 314 struct ch_softc *softc; 315 316 softc = (struct ch_softc *)periph->softc; 317 318 devstat_remove_entry(softc->device_stats); 319 320 free(softc, M_DEVBUF); 321} 322 323static void 324chasync(void *callback_arg, u_int32_t code, struct cam_path *path, void *arg) 325{ 326 struct cam_periph *periph; 327 328 periph = (struct cam_periph *)callback_arg; 329 330 switch(code) { 331 case AC_FOUND_DEVICE: 332 { 333 struct ccb_getdev *cgd; 334 cam_status status; 335 336 cgd = (struct ccb_getdev *)arg; 337 if (cgd == NULL) 338 break; 339 340 if (cgd->protocol != PROTO_SCSI) 341 break; 342 343 if (SID_TYPE(&cgd->inq_data)!= T_CHANGER) 344 break; 345 346 /* 347 * Allocate a peripheral instance for 348 * this device and start the probe 349 * process. 350 */ 351 status = cam_periph_alloc(chregister, choninvalidate, 352 chcleanup, chstart, "ch", 353 CAM_PERIPH_BIO, cgd->ccb_h.path, 354 chasync, AC_FOUND_DEVICE, cgd); 355 356 if (status != CAM_REQ_CMP 357 && status != CAM_REQ_INPROG) 358 printf("chasync: Unable to probe new device " 359 "due to status 0x%x\n", status); 360 361 break; 362 363 } 364 default: 365 cam_periph_async(periph, code, path, arg); 366 break; 367 } 368} 369 370static cam_status 371chregister(struct cam_periph *periph, void *arg) 372{ 373 struct ch_softc *softc; 374 struct ccb_getdev *cgd; 375 struct ccb_pathinq cpi; 376 377 cgd = (struct ccb_getdev *)arg; 378 if (cgd == NULL) { 379 printf("chregister: no getdev CCB, can't register device\n"); 380 return(CAM_REQ_CMP_ERR); 381 } 382 383 softc = (struct ch_softc *)malloc(sizeof(*softc),M_DEVBUF,M_NOWAIT); 384 385 if (softc == NULL) { 386 printf("chregister: Unable to probe new device. " 387 "Unable to allocate softc\n"); 388 return(CAM_REQ_CMP_ERR); 389 } 390 391 bzero(softc, sizeof(*softc)); 392 softc->state = CH_STATE_PROBE; 393 periph->softc = softc; 394 softc->quirks = CH_Q_NONE; 395 396 /* 397 * The DVCID and CURDATA bits were not introduced until the SMC 398 * spec. If this device claims SCSI-2 or earlier support, then it 399 * very likely does not support these bits. 400 */ 401 if (cgd->inq_data.version <= SCSI_REV_2) 402 softc->quirks |= CH_Q_NO_DVCID; 403 404 bzero(&cpi, sizeof(cpi)); 405 xpt_setup_ccb(&cpi.ccb_h, periph->path, CAM_PRIORITY_NORMAL); 406 cpi.ccb_h.func_code = XPT_PATH_INQ; 407 xpt_action((union ccb *)&cpi); 408 409 /* 410 * Changers don't have a blocksize, and obviously don't support 411 * tagged queueing. 412 */ 413 cam_periph_unlock(periph); 414 softc->device_stats = devstat_new_entry("ch", 415 periph->unit_number, 0, 416 DEVSTAT_NO_BLOCKSIZE | DEVSTAT_NO_ORDERED_TAGS, 417 SID_TYPE(&cgd->inq_data) | 418 XPORT_DEVSTAT_TYPE(cpi.transport), 419 DEVSTAT_PRIORITY_OTHER); 420 421 /* 422 * Acquire a reference to the periph before we create the devfs 423 * instance for it. We'll release this reference once the devfs 424 * instance has been freed. 425 */ 426 if (cam_periph_acquire(periph) != CAM_REQ_CMP) { 427 xpt_print(periph->path, "%s: lost periph during " 428 "registration!\n", __func__); 429 cam_periph_lock(periph); 430 return (CAM_REQ_CMP_ERR); 431 } 432 433 434 /* Register the device */ 435 softc->dev = make_dev(&ch_cdevsw, periph->unit_number, UID_ROOT, 436 GID_OPERATOR, 0600, "%s%d", periph->periph_name, 437 periph->unit_number); 438 cam_periph_lock(periph); 439 softc->dev->si_drv1 = periph; 440 441 /* 442 * Add an async callback so that we get 443 * notified if this device goes away. 444 */ 445 xpt_register_async(AC_LOST_DEVICE, chasync, periph, periph->path); 446 447 /* 448 * Lock this periph until we are setup. 449 * This first call can't block 450 */ 451 (void)cam_periph_hold(periph, PRIBIO); 452 xpt_schedule(periph, CAM_PRIORITY_DEV); 453 454 return(CAM_REQ_CMP); 455} 456 457static int 458chopen(struct cdev *dev, int flags, int fmt, struct thread *td) 459{ 460 struct cam_periph *periph; 461 struct ch_softc *softc; 462 int error; 463 464 periph = (struct cam_periph *)dev->si_drv1; 465 if (cam_periph_acquire(periph) != CAM_REQ_CMP) 466 return (ENXIO); 467 468 softc = (struct ch_softc *)periph->softc; 469 470 cam_periph_lock(periph); 471 472 if (softc->flags & CH_FLAG_INVALID) { 473 cam_periph_release_locked(periph); 474 cam_periph_unlock(periph); 475 return(ENXIO); 476 } 477 478 if ((error = cam_periph_hold(periph, PRIBIO | PCATCH)) != 0) { 479 cam_periph_unlock(periph); 480 cam_periph_release(periph); 481 return (error); 482 } 483 484 /* 485 * Load information about this changer device into the softc. 486 */ 487 if ((error = chgetparams(periph)) != 0) { 488 cam_periph_unhold(periph); 489 cam_periph_release_locked(periph); 490 cam_periph_unlock(periph); 491 return(error); 492 } 493 494 cam_periph_unhold(periph); 495 496 softc->open_count++; 497 498 cam_periph_unlock(periph); 499 500 return(error); 501} 502 503static int 504chclose(struct cdev *dev, int flag, int fmt, struct thread *td) 505{ 506 struct cam_sim *sim; 507 struct cam_periph *periph; 508 struct ch_softc *softc; 509 510 periph = (struct cam_periph *)dev->si_drv1; 511 if (periph == NULL) 512 return(ENXIO); 513 514 sim = periph->sim; 515 softc = (struct ch_softc *)periph->softc; 516 517 mtx_lock(sim->mtx); 518 519 softc->open_count--; 520 521 cam_periph_release_locked(periph); 522 523 /* 524 * We reference the SIM lock directly here, instead of using 525 * cam_periph_unlock(). The reason is that the call to 526 * cam_periph_release_locked() above could result in the periph 527 * getting freed. If that is the case, dereferencing the periph 528 * with a cam_periph_unlock() call would cause a page fault. 529 * 530 * cam_periph_release() avoids this problem using the same method, 531 * but we're manually acquiring and dropping the lock here to 532 * protect the open count and avoid another lock acquisition and 533 * release. 534 */ 535 mtx_unlock(sim->mtx); 536 537 return(0); 538} 539 540static void 541chstart(struct cam_periph *periph, union ccb *start_ccb) 542{ 543 struct ch_softc *softc; 544 545 softc = (struct ch_softc *)periph->softc; 546 547 switch (softc->state) { 548 case CH_STATE_NORMAL: 549 { 550 if (periph->immediate_priority <= periph->pinfo.priority){ 551 start_ccb->ccb_h.ccb_state = CH_CCB_WAITING; 552 553 SLIST_INSERT_HEAD(&periph->ccb_list, &start_ccb->ccb_h, 554 periph_links.sle); 555 periph->immediate_priority = CAM_PRIORITY_NONE; 556 wakeup(&periph->ccb_list); 557 } 558 break; 559 } 560 case CH_STATE_PROBE: 561 { 562 int mode_buffer_len; 563 void *mode_buffer; 564 565 /* 566 * Include the block descriptor when calculating the mode 567 * buffer length, 568 */ 569 mode_buffer_len = sizeof(struct scsi_mode_header_6) + 570 sizeof(struct scsi_mode_blk_desc) + 571 sizeof(struct page_element_address_assignment); 572 573 mode_buffer = malloc(mode_buffer_len, M_SCSICH, M_NOWAIT); 574 575 if (mode_buffer == NULL) { 576 printf("chstart: couldn't malloc mode sense data\n"); 577 break; 578 } 579 bzero(mode_buffer, mode_buffer_len); 580 581 /* 582 * Get the element address assignment page. 583 */ 584 scsi_mode_sense(&start_ccb->csio, 585 /* retries */ 1, 586 /* cbfcnp */ chdone, 587 /* tag_action */ MSG_SIMPLE_Q_TAG, 588 /* dbd */ (softc->quirks & CH_Q_NO_DBD) ? 589 FALSE : TRUE, 590 /* page_code */ SMS_PAGE_CTRL_CURRENT, 591 /* page */ CH_ELEMENT_ADDR_ASSIGN_PAGE, 592 /* param_buf */ (u_int8_t *)mode_buffer, 593 /* param_len */ mode_buffer_len, 594 /* sense_len */ SSD_FULL_SIZE, 595 /* timeout */ CH_TIMEOUT_MODE_SENSE); 596 597 start_ccb->ccb_h.ccb_bp = NULL; 598 start_ccb->ccb_h.ccb_state = CH_CCB_PROBE; 599 xpt_action(start_ccb); 600 break; 601 } 602 } 603} 604 605static void 606chdone(struct cam_periph *periph, union ccb *done_ccb) 607{ 608 struct ch_softc *softc; 609 struct ccb_scsiio *csio; 610 611 softc = (struct ch_softc *)periph->softc; 612 csio = &done_ccb->csio; 613 614 switch(done_ccb->ccb_h.ccb_state) { 615 case CH_CCB_PROBE: 616 { 617 struct scsi_mode_header_6 *mode_header; 618 struct page_element_address_assignment *ea; 619 char announce_buf[80]; 620 621 622 mode_header = (struct scsi_mode_header_6 *)csio->data_ptr; 623 624 ea = (struct page_element_address_assignment *) 625 find_mode_page_6(mode_header); 626 627 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP){ 628 629 softc->sc_firsts[CHET_MT] = scsi_2btoul(ea->mtea); 630 softc->sc_counts[CHET_MT] = scsi_2btoul(ea->nmte); 631 softc->sc_firsts[CHET_ST] = scsi_2btoul(ea->fsea); 632 softc->sc_counts[CHET_ST] = scsi_2btoul(ea->nse); 633 softc->sc_firsts[CHET_IE] = scsi_2btoul(ea->fieea); 634 softc->sc_counts[CHET_IE] = scsi_2btoul(ea->niee); 635 softc->sc_firsts[CHET_DT] = scsi_2btoul(ea->fdtea); 636 softc->sc_counts[CHET_DT] = scsi_2btoul(ea->ndte); 637 softc->sc_picker = softc->sc_firsts[CHET_MT]; 638 639#define PLURAL(c) (c) == 1 ? "" : "s" 640 snprintf(announce_buf, sizeof(announce_buf), 641 "%d slot%s, %d drive%s, " 642 "%d picker%s, %d portal%s", 643 softc->sc_counts[CHET_ST], 644 PLURAL(softc->sc_counts[CHET_ST]), 645 softc->sc_counts[CHET_DT], 646 PLURAL(softc->sc_counts[CHET_DT]), 647 softc->sc_counts[CHET_MT], 648 PLURAL(softc->sc_counts[CHET_MT]), 649 softc->sc_counts[CHET_IE], 650 PLURAL(softc->sc_counts[CHET_IE])); 651#undef PLURAL 652 } else { 653 int error; 654 655 error = cherror(done_ccb, CAM_RETRY_SELTO, 656 SF_RETRY_UA | SF_NO_PRINT); 657 /* 658 * Retry any UNIT ATTENTION type errors. They 659 * are expected at boot. 660 */ 661 if (error == ERESTART) { 662 /* 663 * A retry was scheuled, so 664 * just return. 665 */ 666 return; 667 } else if (error != 0) { 668 int retry_scheduled; 669 struct scsi_mode_sense_6 *sms; 670 671 sms = (struct scsi_mode_sense_6 *) 672 done_ccb->csio.cdb_io.cdb_bytes; 673 674 /* 675 * Check to see if block descriptors were 676 * disabled. Some devices don't like that. 677 * We're taking advantage of the fact that 678 * the first few bytes of the 6 and 10 byte 679 * mode sense commands are the same. If 680 * block descriptors were disabled, enable 681 * them and re-send the command. 682 */ 683 if (sms->byte2 & SMS_DBD) { 684 sms->byte2 &= ~SMS_DBD; 685 xpt_action(done_ccb); 686 softc->quirks |= CH_Q_NO_DBD; 687 retry_scheduled = 1; 688 } else 689 retry_scheduled = 0; 690 691 /* Don't wedge this device's queue */ 692 if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 693 cam_release_devq(done_ccb->ccb_h.path, 694 /*relsim_flags*/0, 695 /*reduction*/0, 696 /*timeout*/0, 697 /*getcount_only*/0); 698 699 if (retry_scheduled) 700 return; 701 702 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) 703 == CAM_SCSI_STATUS_ERROR) 704 scsi_sense_print(&done_ccb->csio); 705 else { 706 xpt_print(periph->path, 707 "got CAM status %#x\n", 708 done_ccb->ccb_h.status); 709 } 710 xpt_print(periph->path, "fatal error, failed " 711 "to attach to device\n"); 712 713 cam_periph_invalidate(periph); 714 715 announce_buf[0] = '\0'; 716 } 717 } 718 if (announce_buf[0] != '\0') { 719 xpt_announce_periph(periph, announce_buf); 720 xpt_announce_quirks(periph, softc->quirks, 721 CH_Q_BIT_STRING); 722 } 723 softc->state = CH_STATE_NORMAL; 724 free(mode_header, M_SCSICH); 725 /* 726 * Since our peripheral may be invalidated by an error 727 * above or an external event, we must release our CCB 728 * before releasing the probe lock on the peripheral. 729 * The peripheral will only go away once the last lock 730 * is removed, and we need it around for the CCB release 731 * operation. 732 */ 733 xpt_release_ccb(done_ccb); 734 cam_periph_unhold(periph); 735 return; 736 } 737 case CH_CCB_WAITING: 738 { 739 /* Caller will release the CCB */ 740 wakeup(&done_ccb->ccb_h.cbfcnp); 741 return; 742 } 743 default: 744 break; 745 } 746 xpt_release_ccb(done_ccb); 747} 748 749static int 750cherror(union ccb *ccb, u_int32_t cam_flags, u_int32_t sense_flags) 751{ 752 struct ch_softc *softc; 753 struct cam_periph *periph; 754 755 periph = xpt_path_periph(ccb->ccb_h.path); 756 softc = (struct ch_softc *)periph->softc; 757 758 return (cam_periph_error(ccb, cam_flags, sense_flags, 759 &softc->saved_ccb)); 760} 761 762static int 763chioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flag, struct thread *td) 764{ 765 struct cam_periph *periph; 766 struct ch_softc *softc; 767 int error; 768 769 periph = (struct cam_periph *)dev->si_drv1; 770 if (periph == NULL) 771 return(ENXIO); 772 773 cam_periph_lock(periph); 774 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("entering chioctl\n")); 775 776 softc = (struct ch_softc *)periph->softc; 777 778 error = 0; 779 780 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, 781 ("trying to do ioctl %#lx\n", cmd)); 782 783 /* 784 * If this command can change the device's state, we must 785 * have the device open for writing. 786 */ 787 switch (cmd) { 788 case CHIOGPICKER: 789 case CHIOGPARAMS: 790 case OCHIOGSTATUS: 791 case CHIOGSTATUS: 792 break; 793 794 default: 795 if ((flag & FWRITE) == 0) { 796 cam_periph_unlock(periph); 797 return (EBADF); 798 } 799 } 800 801 switch (cmd) { 802 case CHIOMOVE: 803 error = chmove(periph, (struct changer_move *)addr); 804 break; 805 806 case CHIOEXCHANGE: 807 error = chexchange(periph, (struct changer_exchange *)addr); 808 break; 809 810 case CHIOPOSITION: 811 error = chposition(periph, (struct changer_position *)addr); 812 break; 813 814 case CHIOGPICKER: 815 *(int *)addr = softc->sc_picker - softc->sc_firsts[CHET_MT]; 816 break; 817 818 case CHIOSPICKER: 819 { 820 int new_picker = *(int *)addr; 821 822 if (new_picker > (softc->sc_counts[CHET_MT] - 1)) { 823 error = EINVAL; 824 break; 825 } 826 softc->sc_picker = softc->sc_firsts[CHET_MT] + new_picker; 827 break; 828 } 829 case CHIOGPARAMS: 830 { 831 struct changer_params *cp = (struct changer_params *)addr; 832 833 cp->cp_npickers = softc->sc_counts[CHET_MT]; 834 cp->cp_nslots = softc->sc_counts[CHET_ST]; 835 cp->cp_nportals = softc->sc_counts[CHET_IE]; 836 cp->cp_ndrives = softc->sc_counts[CHET_DT]; 837 break; 838 } 839 case CHIOIELEM: 840 error = chielem(periph, *(unsigned int *)addr); 841 break; 842 843 case OCHIOGSTATUS: 844 { 845 error = chgetelemstatus(periph, SCSI_REV_2, cmd, 846 (struct changer_element_status_request *)addr); 847 break; 848 } 849 850 case CHIOGSTATUS: 851 { 852 int scsi_version; 853 854 scsi_version = chscsiversion(periph); 855 if (scsi_version >= SCSI_REV_0) { 856 error = chgetelemstatus(periph, scsi_version, cmd, 857 (struct changer_element_status_request *)addr); 858 } 859 else { /* unable to determine the SCSI version */ 860 cam_periph_unlock(periph); 861 return (ENXIO); 862 } 863 break; 864 } 865 866 case CHIOSETVOLTAG: 867 { 868 error = chsetvoltag(periph, 869 (struct changer_set_voltag_request *) addr); 870 break; 871 } 872 873 /* Implement prevent/allow? */ 874 875 default: 876 error = cam_periph_ioctl(periph, cmd, addr, cherror); 877 break; 878 } 879 880 cam_periph_unlock(periph); 881 return (error); 882} 883 884static int 885chmove(struct cam_periph *periph, struct changer_move *cm) 886{ 887 struct ch_softc *softc; 888 u_int16_t fromelem, toelem; 889 union ccb *ccb; 890 int error; 891 892 error = 0; 893 softc = (struct ch_softc *)periph->softc; 894 895 /* 896 * Check arguments. 897 */ 898 if ((cm->cm_fromtype > CHET_DT) || (cm->cm_totype > CHET_DT)) 899 return (EINVAL); 900 if ((cm->cm_fromunit > (softc->sc_counts[cm->cm_fromtype] - 1)) || 901 (cm->cm_tounit > (softc->sc_counts[cm->cm_totype] - 1))) 902 return (ENODEV); 903 904 /* 905 * Check the request against the changer's capabilities. 906 */ 907 if ((softc->sc_movemask[cm->cm_fromtype] & (1 << cm->cm_totype)) == 0) 908 return (ENODEV); 909 910 /* 911 * Calculate the source and destination elements. 912 */ 913 fromelem = softc->sc_firsts[cm->cm_fromtype] + cm->cm_fromunit; 914 toelem = softc->sc_firsts[cm->cm_totype] + cm->cm_tounit; 915 916 ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL); 917 918 scsi_move_medium(&ccb->csio, 919 /* retries */ 1, 920 /* cbfcnp */ chdone, 921 /* tag_action */ MSG_SIMPLE_Q_TAG, 922 /* tea */ softc->sc_picker, 923 /* src */ fromelem, 924 /* dst */ toelem, 925 /* invert */ (cm->cm_flags & CM_INVERT) ? TRUE : FALSE, 926 /* sense_len */ SSD_FULL_SIZE, 927 /* timeout */ CH_TIMEOUT_MOVE_MEDIUM); 928 929 error = cam_periph_runccb(ccb, cherror, /*cam_flags*/CAM_RETRY_SELTO, 930 /*sense_flags*/ SF_RETRY_UA, 931 softc->device_stats); 932 933 xpt_release_ccb(ccb); 934 935 return(error); 936} 937 938static int 939chexchange(struct cam_periph *periph, struct changer_exchange *ce) 940{ 941 struct ch_softc *softc; 942 u_int16_t src, dst1, dst2; 943 union ccb *ccb; 944 int error; 945 946 error = 0; 947 softc = (struct ch_softc *)periph->softc; 948 /* 949 * Check arguments. 950 */ 951 if ((ce->ce_srctype > CHET_DT) || (ce->ce_fdsttype > CHET_DT) || 952 (ce->ce_sdsttype > CHET_DT)) 953 return (EINVAL); 954 if ((ce->ce_srcunit > (softc->sc_counts[ce->ce_srctype] - 1)) || 955 (ce->ce_fdstunit > (softc->sc_counts[ce->ce_fdsttype] - 1)) || 956 (ce->ce_sdstunit > (softc->sc_counts[ce->ce_sdsttype] - 1))) 957 return (ENODEV); 958 959 /* 960 * Check the request against the changer's capabilities. 961 */ 962 if (((softc->sc_exchangemask[ce->ce_srctype] & 963 (1 << ce->ce_fdsttype)) == 0) || 964 ((softc->sc_exchangemask[ce->ce_fdsttype] & 965 (1 << ce->ce_sdsttype)) == 0)) 966 return (ENODEV); 967 968 /* 969 * Calculate the source and destination elements. 970 */ 971 src = softc->sc_firsts[ce->ce_srctype] + ce->ce_srcunit; 972 dst1 = softc->sc_firsts[ce->ce_fdsttype] + ce->ce_fdstunit; 973 dst2 = softc->sc_firsts[ce->ce_sdsttype] + ce->ce_sdstunit; 974 975 ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL); 976 977 scsi_exchange_medium(&ccb->csio, 978 /* retries */ 1, 979 /* cbfcnp */ chdone, 980 /* tag_action */ MSG_SIMPLE_Q_TAG, 981 /* tea */ softc->sc_picker, 982 /* src */ src, 983 /* dst1 */ dst1, 984 /* dst2 */ dst2, 985 /* invert1 */ (ce->ce_flags & CE_INVERT1) ? 986 TRUE : FALSE, 987 /* invert2 */ (ce->ce_flags & CE_INVERT2) ? 988 TRUE : FALSE, 989 /* sense_len */ SSD_FULL_SIZE, 990 /* timeout */ CH_TIMEOUT_EXCHANGE_MEDIUM); 991 992 error = cam_periph_runccb(ccb, cherror, /*cam_flags*/CAM_RETRY_SELTO, 993 /*sense_flags*/ SF_RETRY_UA, 994 softc->device_stats); 995 996 xpt_release_ccb(ccb); 997 998 return(error); 999} 1000 1001static int 1002chposition(struct cam_periph *periph, struct changer_position *cp) 1003{ 1004 struct ch_softc *softc; 1005 u_int16_t dst; 1006 union ccb *ccb; 1007 int error; 1008 1009 error = 0; 1010 softc = (struct ch_softc *)periph->softc; 1011 1012 /* 1013 * Check arguments. 1014 */ 1015 if (cp->cp_type > CHET_DT) 1016 return (EINVAL); 1017 if (cp->cp_unit > (softc->sc_counts[cp->cp_type] - 1)) 1018 return (ENODEV); 1019 1020 /* 1021 * Calculate the destination element. 1022 */ 1023 dst = softc->sc_firsts[cp->cp_type] + cp->cp_unit; 1024 1025 ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL); 1026 1027 scsi_position_to_element(&ccb->csio, 1028 /* retries */ 1, 1029 /* cbfcnp */ chdone, 1030 /* tag_action */ MSG_SIMPLE_Q_TAG, 1031 /* tea */ softc->sc_picker, 1032 /* dst */ dst, 1033 /* invert */ (cp->cp_flags & CP_INVERT) ? 1034 TRUE : FALSE, 1035 /* sense_len */ SSD_FULL_SIZE, 1036 /* timeout */ CH_TIMEOUT_POSITION_TO_ELEMENT); 1037 1038 error = cam_periph_runccb(ccb, cherror, /*cam_flags*/ CAM_RETRY_SELTO, 1039 /*sense_flags*/ SF_RETRY_UA, 1040 softc->device_stats); 1041 1042 xpt_release_ccb(ccb); 1043 1044 return(error); 1045} 1046 1047/* 1048 * Copy a volume tag to a volume_tag struct, converting SCSI byte order 1049 * to host native byte order in the volume serial number. The volume 1050 * label as returned by the changer is transferred to user mode as 1051 * nul-terminated string. Volume labels are truncated at the first 1052 * space, as suggested by SCSI-2. 1053 */ 1054static void 1055copy_voltag(struct changer_voltag *uvoltag, struct volume_tag *voltag) 1056{ 1057 int i; 1058 for (i=0; i<CH_VOLTAG_MAXLEN; i++) { 1059 char c = voltag->vif[i]; 1060 if (c && c != ' ') 1061 uvoltag->cv_volid[i] = c; 1062 else 1063 break; 1064 } 1065 uvoltag->cv_serial = scsi_2btoul(voltag->vsn); 1066} 1067 1068/* 1069 * Copy an element status descriptor to a user-mode 1070 * changer_element_status structure. 1071 */ 1072static void 1073copy_element_status(struct ch_softc *softc, 1074 u_int16_t flags, 1075 struct read_element_status_descriptor *desc, 1076 struct changer_element_status *ces, 1077 int scsi_version) 1078{ 1079 u_int16_t eaddr = scsi_2btoul(desc->eaddr); 1080 u_int16_t et; 1081 struct volume_tag *pvol_tag = NULL, *avol_tag = NULL; 1082 struct read_element_status_device_id *devid = NULL; 1083 1084 ces->ces_int_addr = eaddr; 1085 /* set up logical address in element status */ 1086 for (et = CHET_MT; et <= CHET_DT; et++) { 1087 if ((softc->sc_firsts[et] <= eaddr) 1088 && ((softc->sc_firsts[et] + softc->sc_counts[et]) 1089 > eaddr)) { 1090 ces->ces_addr = eaddr - softc->sc_firsts[et]; 1091 ces->ces_type = et; 1092 break; 1093 } 1094 } 1095 1096 ces->ces_flags = desc->flags1; 1097 1098 ces->ces_sensecode = desc->sense_code; 1099 ces->ces_sensequal = desc->sense_qual; 1100 1101 if (desc->flags2 & READ_ELEMENT_STATUS_INVERT) 1102 ces->ces_flags |= CES_INVERT; 1103 1104 if (desc->flags2 & READ_ELEMENT_STATUS_SVALID) { 1105 1106 eaddr = scsi_2btoul(desc->ssea); 1107 1108 /* convert source address to logical format */ 1109 for (et = CHET_MT; et <= CHET_DT; et++) { 1110 if ((softc->sc_firsts[et] <= eaddr) 1111 && ((softc->sc_firsts[et] + softc->sc_counts[et]) 1112 > eaddr)) { 1113 ces->ces_source_addr = 1114 eaddr - softc->sc_firsts[et]; 1115 ces->ces_source_type = et; 1116 ces->ces_flags |= CES_SOURCE_VALID; 1117 break; 1118 } 1119 } 1120 1121 if (!(ces->ces_flags & CES_SOURCE_VALID)) 1122 printf("ch: warning: could not map element source " 1123 "address %ud to a valid element type\n", 1124 eaddr); 1125 } 1126 1127 /* 1128 * pvoltag and avoltag are common between SCSI-2 and later versions 1129 */ 1130 if (flags & READ_ELEMENT_STATUS_PVOLTAG) 1131 pvol_tag = &desc->voltag_devid.pvoltag; 1132 if (flags & READ_ELEMENT_STATUS_AVOLTAG) 1133 avol_tag = (flags & READ_ELEMENT_STATUS_PVOLTAG) ? 1134 &desc->voltag_devid.voltag[1] :&desc->voltag_devid.pvoltag; 1135 /* 1136 * For SCSI-3 and later, element status can carry designator and 1137 * other information. 1138 */ 1139 if (scsi_version >= SCSI_REV_SPC) { 1140 if ((flags & READ_ELEMENT_STATUS_PVOLTAG) ^ 1141 (flags & READ_ELEMENT_STATUS_AVOLTAG)) 1142 devid = &desc->voltag_devid.pvol_and_devid.devid; 1143 else if (!(flags & READ_ELEMENT_STATUS_PVOLTAG) && 1144 !(flags & READ_ELEMENT_STATUS_AVOLTAG)) 1145 devid = &desc->voltag_devid.devid; 1146 else /* Have both PVOLTAG and AVOLTAG */ 1147 devid = &desc->voltag_devid.vol_tags_and_devid.devid; 1148 } 1149 1150 if (pvol_tag) 1151 copy_voltag(&(ces->ces_pvoltag), pvol_tag); 1152 if (avol_tag) 1153 copy_voltag(&(ces->ces_pvoltag), avol_tag); 1154 if (devid != NULL) { 1155 if (devid->designator_length > 0) { 1156 bcopy((void *)devid->designator, 1157 (void *)ces->ces_designator, 1158 devid->designator_length); 1159 ces->ces_designator_length = devid->designator_length; 1160 /* 1161 * Make sure we are always NUL terminated. The 1162 * This won't matter for the binary code set, 1163 * since the user will only pay attention to the 1164 * length field. 1165 */ 1166 ces->ces_designator[devid->designator_length]= '\0'; 1167 } 1168 if (devid->piv_assoc_designator_type & 1169 READ_ELEMENT_STATUS_PIV_SET) { 1170 ces->ces_flags |= CES_PIV; 1171 ces->ces_protocol_id = 1172 READ_ELEMENT_STATUS_PROTOCOL_ID( 1173 devid->prot_code_set); 1174 } 1175 ces->ces_code_set = 1176 READ_ELEMENT_STATUS_CODE_SET(devid->prot_code_set); 1177 ces->ces_assoc = READ_ELEMENT_STATUS_ASSOCIATION( 1178 devid->piv_assoc_designator_type); 1179 ces->ces_designator_type = READ_ELEMENT_STATUS_DESIGNATOR_TYPE( 1180 devid->piv_assoc_designator_type); 1181 } else if (scsi_version > SCSI_REV_2) { 1182 /* SCSI-SPC and No devid, no designator */ 1183 ces->ces_designator_length = 0; 1184 ces->ces_designator[0] = '\0'; 1185 ces->ces_protocol_id = CES_PROTOCOL_ID_FCP_4; 1186 } 1187 1188 if (scsi_version <= SCSI_REV_2) { 1189 if (desc->dt_or_obsolete.scsi_2.dt_scsi_flags & 1190 READ_ELEMENT_STATUS_DT_IDVALID) { 1191 ces->ces_flags |= CES_SCSIID_VALID; 1192 ces->ces_scsi_id = 1193 desc->dt_or_obsolete.scsi_2.dt_scsi_addr; 1194 } 1195 1196 if (desc->dt_or_obsolete.scsi_2.dt_scsi_addr & 1197 READ_ELEMENT_STATUS_DT_LUVALID) { 1198 ces->ces_flags |= CES_LUN_VALID; 1199 ces->ces_scsi_lun = 1200 desc->dt_or_obsolete.scsi_2.dt_scsi_flags & 1201 READ_ELEMENT_STATUS_DT_LUNMASK; 1202 } 1203 } 1204} 1205 1206static int 1207chgetelemstatus(struct cam_periph *periph, int scsi_version, u_long cmd, 1208 struct changer_element_status_request *cesr) 1209{ 1210 struct read_element_status_header *st_hdr; 1211 struct read_element_status_page_header *pg_hdr; 1212 struct read_element_status_descriptor *desc; 1213 caddr_t data = NULL; 1214 size_t size, desclen; 1215 int avail, i, error = 0; 1216 int curdata, dvcid, sense_flags; 1217 int try_no_dvcid = 0; 1218 struct changer_element_status *user_data = NULL; 1219 struct ch_softc *softc; 1220 union ccb *ccb; 1221 int chet = cesr->cesr_element_type; 1222 int want_voltags = (cesr->cesr_flags & CESR_VOLTAGS) ? 1 : 0; 1223 1224 softc = (struct ch_softc *)periph->softc; 1225 1226 /* perform argument checking */ 1227 1228 /* 1229 * Perform a range check on the cesr_element_{base,count} 1230 * request argument fields. 1231 */ 1232 if ((softc->sc_counts[chet] - cesr->cesr_element_base) <= 0 1233 || (cesr->cesr_element_base + cesr->cesr_element_count) 1234 > softc->sc_counts[chet]) 1235 return (EINVAL); 1236 1237 /* 1238 * Request one descriptor for the given element type. This 1239 * is used to determine the size of the descriptor so that 1240 * we can allocate enough storage for all of them. We assume 1241 * that the first one can fit into 1k. 1242 */ 1243 cam_periph_unlock(periph); 1244 data = (caddr_t)malloc(1024, M_DEVBUF, M_WAITOK); 1245 1246 cam_periph_lock(periph); 1247 ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL); 1248 1249 sense_flags = SF_RETRY_UA; 1250 if (softc->quirks & CH_Q_NO_DVCID) { 1251 dvcid = 0; 1252 curdata = 0; 1253 } else { 1254 dvcid = 1; 1255 curdata = 1; 1256 /* 1257 * Don't print anything for an Illegal Request, because 1258 * these flags can cause some changers to complain. We'll 1259 * retry without them if we get an error. 1260 */ 1261 sense_flags |= SF_QUIET_IR; 1262 } 1263 1264retry_einval: 1265 1266 scsi_read_element_status(&ccb->csio, 1267 /* retries */ 1, 1268 /* cbfcnp */ chdone, 1269 /* tag_action */ MSG_SIMPLE_Q_TAG, 1270 /* voltag */ want_voltags, 1271 /* sea */ softc->sc_firsts[chet], 1272 /* curdata */ curdata, 1273 /* dvcid */ dvcid, 1274 /* count */ 1, 1275 /* data_ptr */ data, 1276 /* dxfer_len */ 1024, 1277 /* sense_len */ SSD_FULL_SIZE, 1278 /* timeout */ CH_TIMEOUT_READ_ELEMENT_STATUS); 1279 1280 error = cam_periph_runccb(ccb, cherror, /*cam_flags*/ CAM_RETRY_SELTO, 1281 /*sense_flags*/ sense_flags, 1282 softc->device_stats); 1283 1284 /* 1285 * An Illegal Request sense key (only used if there is no asc/ascq) 1286 * or 0x24,0x00 for an ASC/ASCQ both map to EINVAL. If dvcid or 1287 * curdata are set (we set both or neither), try turning them off 1288 * and see if the command is successful. 1289 */ 1290 if ((error == EINVAL) 1291 && (dvcid || curdata)) { 1292 dvcid = 0; 1293 curdata = 0; 1294 error = 0; 1295 /* At this point we want to report any Illegal Request */ 1296 sense_flags &= ~SF_QUIET_IR; 1297 try_no_dvcid = 1; 1298 goto retry_einval; 1299 } 1300 1301 /* 1302 * In this case, we tried a read element status with dvcid and 1303 * curdata set, and it failed. We retried without those bits, and 1304 * it succeeded. Suggest to the user that he set a quirk, so we 1305 * don't go through the retry process the first time in the future. 1306 * This should only happen on changers that claim SCSI-3 or higher, 1307 * but don't support these bits. 1308 */ 1309 if ((try_no_dvcid != 0) 1310 && (error == 0)) 1311 softc->quirks |= CH_Q_NO_DVCID; 1312 1313 if (error) 1314 goto done; 1315 cam_periph_unlock(periph); 1316 1317 st_hdr = (struct read_element_status_header *)data; 1318 pg_hdr = (struct read_element_status_page_header *)((uintptr_t)st_hdr + 1319 sizeof(struct read_element_status_header)); 1320 desclen = scsi_2btoul(pg_hdr->edl); 1321 1322 size = sizeof(struct read_element_status_header) + 1323 sizeof(struct read_element_status_page_header) + 1324 (desclen * cesr->cesr_element_count); 1325 /* 1326 * Reallocate storage for descriptors and get them from the 1327 * device. 1328 */ 1329 free(data, M_DEVBUF); 1330 data = (caddr_t)malloc(size, M_DEVBUF, M_WAITOK); 1331 1332 cam_periph_lock(periph); 1333 scsi_read_element_status(&ccb->csio, 1334 /* retries */ 1, 1335 /* cbfcnp */ chdone, 1336 /* tag_action */ MSG_SIMPLE_Q_TAG, 1337 /* voltag */ want_voltags, 1338 /* sea */ softc->sc_firsts[chet] 1339 + cesr->cesr_element_base, 1340 /* curdata */ curdata, 1341 /* dvcid */ dvcid, 1342 /* count */ cesr->cesr_element_count, 1343 /* data_ptr */ data, 1344 /* dxfer_len */ size, 1345 /* sense_len */ SSD_FULL_SIZE, 1346 /* timeout */ CH_TIMEOUT_READ_ELEMENT_STATUS); 1347 1348 error = cam_periph_runccb(ccb, cherror, /*cam_flags*/ CAM_RETRY_SELTO, 1349 /*sense_flags*/ SF_RETRY_UA, 1350 softc->device_stats); 1351 1352 if (error) 1353 goto done; 1354 cam_periph_unlock(periph); 1355 1356 /* 1357 * Fill in the user status array. 1358 */ 1359 st_hdr = (struct read_element_status_header *)data; 1360 pg_hdr = (struct read_element_status_page_header *)((uintptr_t)st_hdr + 1361 sizeof(struct read_element_status_header)); 1362 avail = scsi_2btoul(st_hdr->count); 1363 1364 if (avail != cesr->cesr_element_count) { 1365 xpt_print(periph->path, 1366 "warning, READ ELEMENT STATUS avail != count\n"); 1367 } 1368 1369 user_data = (struct changer_element_status *) 1370 malloc(avail * sizeof(struct changer_element_status), 1371 M_DEVBUF, M_WAITOK | M_ZERO); 1372 1373 desc = (struct read_element_status_descriptor *)((uintptr_t)data + 1374 sizeof(struct read_element_status_header) + 1375 sizeof(struct read_element_status_page_header)); 1376 /* 1377 * Set up the individual element status structures 1378 */ 1379 for (i = 0; i < avail; ++i) { 1380 struct changer_element_status *ces; 1381 1382 /* 1383 * In the changer_element_status structure, fields from 1384 * the beginning to the field of ces_scsi_lun are common 1385 * between SCSI-2 and SCSI-3, while all the rest are new 1386 * from SCSI-3. In order to maintain backward compatibility 1387 * of the chio command, the ces pointer, below, is computed 1388 * such that it lines up with the structure boundary 1389 * corresponding to the SCSI version. 1390 */ 1391 ces = cmd == OCHIOGSTATUS ? 1392 (struct changer_element_status *) 1393 ((unsigned char *)user_data + i * 1394 (offsetof(struct changer_element_status,ces_scsi_lun)+1)): 1395 &user_data[i]; 1396 1397 copy_element_status(softc, pg_hdr->flags, desc, 1398 ces, scsi_version); 1399 1400 desc = (struct read_element_status_descriptor *) 1401 ((unsigned char *)desc + desclen); 1402 } 1403 1404 /* Copy element status structures out to userspace. */ 1405 if (cmd == OCHIOGSTATUS) 1406 error = copyout(user_data, 1407 cesr->cesr_element_status, 1408 avail* (offsetof(struct changer_element_status, 1409 ces_scsi_lun) + 1)); 1410 else 1411 error = copyout(user_data, 1412 cesr->cesr_element_status, 1413 avail * sizeof(struct changer_element_status)); 1414 1415 cam_periph_lock(periph); 1416 1417 done: 1418 xpt_release_ccb(ccb); 1419 1420 if (data != NULL) 1421 free(data, M_DEVBUF); 1422 if (user_data != NULL) 1423 free(user_data, M_DEVBUF); 1424 1425 return (error); 1426} 1427 1428static int 1429chielem(struct cam_periph *periph, 1430 unsigned int timeout) 1431{ 1432 union ccb *ccb; 1433 struct ch_softc *softc; 1434 int error; 1435 1436 if (!timeout) { 1437 timeout = CH_TIMEOUT_INITIALIZE_ELEMENT_STATUS; 1438 } else { 1439 timeout *= 1000; 1440 } 1441 1442 error = 0; 1443 softc = (struct ch_softc *)periph->softc; 1444 1445 ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL); 1446 1447 scsi_initialize_element_status(&ccb->csio, 1448 /* retries */ 1, 1449 /* cbfcnp */ chdone, 1450 /* tag_action */ MSG_SIMPLE_Q_TAG, 1451 /* sense_len */ SSD_FULL_SIZE, 1452 /* timeout */ timeout); 1453 1454 error = cam_periph_runccb(ccb, cherror, /*cam_flags*/ CAM_RETRY_SELTO, 1455 /*sense_flags*/ SF_RETRY_UA, 1456 softc->device_stats); 1457 1458 xpt_release_ccb(ccb); 1459 1460 return(error); 1461} 1462 1463static int 1464chsetvoltag(struct cam_periph *periph, 1465 struct changer_set_voltag_request *csvr) 1466{ 1467 union ccb *ccb; 1468 struct ch_softc *softc; 1469 u_int16_t ea; 1470 u_int8_t sac; 1471 struct scsi_send_volume_tag_parameters ssvtp; 1472 int error; 1473 int i; 1474 1475 error = 0; 1476 softc = (struct ch_softc *)periph->softc; 1477 1478 bzero(&ssvtp, sizeof(ssvtp)); 1479 for (i=0; i<sizeof(ssvtp.vitf); i++) { 1480 ssvtp.vitf[i] = ' '; 1481 } 1482 1483 /* 1484 * Check arguments. 1485 */ 1486 if (csvr->csvr_type > CHET_DT) 1487 return EINVAL; 1488 if (csvr->csvr_addr > (softc->sc_counts[csvr->csvr_type] - 1)) 1489 return ENODEV; 1490 1491 ea = softc->sc_firsts[csvr->csvr_type] + csvr->csvr_addr; 1492 1493 if (csvr->csvr_flags & CSVR_ALTERNATE) { 1494 switch (csvr->csvr_flags & CSVR_MODE_MASK) { 1495 case CSVR_MODE_SET: 1496 sac = SEND_VOLUME_TAG_ASSERT_ALTERNATE; 1497 break; 1498 case CSVR_MODE_REPLACE: 1499 sac = SEND_VOLUME_TAG_REPLACE_ALTERNATE; 1500 break; 1501 case CSVR_MODE_CLEAR: 1502 sac = SEND_VOLUME_TAG_UNDEFINED_ALTERNATE; 1503 break; 1504 default: 1505 error = EINVAL; 1506 goto out; 1507 } 1508 } else { 1509 switch (csvr->csvr_flags & CSVR_MODE_MASK) { 1510 case CSVR_MODE_SET: 1511 sac = SEND_VOLUME_TAG_ASSERT_PRIMARY; 1512 break; 1513 case CSVR_MODE_REPLACE: 1514 sac = SEND_VOLUME_TAG_REPLACE_PRIMARY; 1515 break; 1516 case CSVR_MODE_CLEAR: 1517 sac = SEND_VOLUME_TAG_UNDEFINED_PRIMARY; 1518 break; 1519 default: 1520 error = EINVAL; 1521 goto out; 1522 } 1523 } 1524 1525 memcpy(ssvtp.vitf, csvr->csvr_voltag.cv_volid, 1526 min(strlen(csvr->csvr_voltag.cv_volid), sizeof(ssvtp.vitf))); 1527 scsi_ulto2b(csvr->csvr_voltag.cv_serial, ssvtp.minvsn); 1528 1529 ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL); 1530 1531 scsi_send_volume_tag(&ccb->csio, 1532 /* retries */ 1, 1533 /* cbfcnp */ chdone, 1534 /* tag_action */ MSG_SIMPLE_Q_TAG, 1535 /* element_address */ ea, 1536 /* send_action_code */ sac, 1537 /* parameters */ &ssvtp, 1538 /* sense_len */ SSD_FULL_SIZE, 1539 /* timeout */ CH_TIMEOUT_SEND_VOLTAG); 1540 1541 error = cam_periph_runccb(ccb, cherror, /*cam_flags*/ CAM_RETRY_SELTO, 1542 /*sense_flags*/ SF_RETRY_UA, 1543 softc->device_stats); 1544 1545 xpt_release_ccb(ccb); 1546 1547 out: 1548 return error; 1549} 1550 1551static int 1552chgetparams(struct cam_periph *periph) 1553{ 1554 union ccb *ccb; 1555 struct ch_softc *softc; 1556 void *mode_buffer; 1557 int mode_buffer_len; 1558 struct page_element_address_assignment *ea; 1559 struct page_device_capabilities *cap; 1560 int error, from, dbd; 1561 u_int8_t *moves, *exchanges; 1562 1563 error = 0; 1564 1565 softc = (struct ch_softc *)periph->softc; 1566 1567 ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL); 1568 1569 /* 1570 * The scsi_mode_sense_data structure is just a convenience 1571 * structure that allows us to easily calculate the worst-case 1572 * storage size of the mode sense buffer. 1573 */ 1574 mode_buffer_len = sizeof(struct scsi_mode_sense_data); 1575 1576 mode_buffer = malloc(mode_buffer_len, M_SCSICH, M_NOWAIT); 1577 1578 if (mode_buffer == NULL) { 1579 printf("chgetparams: couldn't malloc mode sense data\n"); 1580 return(ENOSPC); 1581 } 1582 1583 bzero(mode_buffer, mode_buffer_len); 1584 1585 if (softc->quirks & CH_Q_NO_DBD) 1586 dbd = FALSE; 1587 else 1588 dbd = TRUE; 1589 1590 /* 1591 * Get the element address assignment page. 1592 */ 1593 scsi_mode_sense(&ccb->csio, 1594 /* retries */ 1, 1595 /* cbfcnp */ chdone, 1596 /* tag_action */ MSG_SIMPLE_Q_TAG, 1597 /* dbd */ dbd, 1598 /* page_code */ SMS_PAGE_CTRL_CURRENT, 1599 /* page */ CH_ELEMENT_ADDR_ASSIGN_PAGE, 1600 /* param_buf */ (u_int8_t *)mode_buffer, 1601 /* param_len */ mode_buffer_len, 1602 /* sense_len */ SSD_FULL_SIZE, 1603 /* timeout */ CH_TIMEOUT_MODE_SENSE); 1604 1605 error = cam_periph_runccb(ccb, cherror, /*cam_flags*/ CAM_RETRY_SELTO, 1606 /* sense_flags */ SF_RETRY_UA|SF_NO_PRINT, 1607 softc->device_stats); 1608 1609 if (error) { 1610 if (dbd) { 1611 struct scsi_mode_sense_6 *sms; 1612 1613 sms = (struct scsi_mode_sense_6 *) 1614 ccb->csio.cdb_io.cdb_bytes; 1615 1616 sms->byte2 &= ~SMS_DBD; 1617 error = cam_periph_runccb(ccb, cherror, 1618 /*cam_flags*/ CAM_RETRY_SELTO, 1619 /*sense_flags*/ SF_RETRY_UA, 1620 softc->device_stats); 1621 } else { 1622 /* 1623 * Since we disabled sense printing above, print 1624 * out the sense here since we got an error. 1625 */ 1626 scsi_sense_print(&ccb->csio); 1627 } 1628 1629 if (error) { 1630 xpt_print(periph->path, 1631 "chgetparams: error getting element " 1632 "address page\n"); 1633 xpt_release_ccb(ccb); 1634 free(mode_buffer, M_SCSICH); 1635 return(error); 1636 } 1637 } 1638 1639 ea = (struct page_element_address_assignment *) 1640 find_mode_page_6((struct scsi_mode_header_6 *)mode_buffer); 1641 1642 softc->sc_firsts[CHET_MT] = scsi_2btoul(ea->mtea); 1643 softc->sc_counts[CHET_MT] = scsi_2btoul(ea->nmte); 1644 softc->sc_firsts[CHET_ST] = scsi_2btoul(ea->fsea); 1645 softc->sc_counts[CHET_ST] = scsi_2btoul(ea->nse); 1646 softc->sc_firsts[CHET_IE] = scsi_2btoul(ea->fieea); 1647 softc->sc_counts[CHET_IE] = scsi_2btoul(ea->niee); 1648 softc->sc_firsts[CHET_DT] = scsi_2btoul(ea->fdtea); 1649 softc->sc_counts[CHET_DT] = scsi_2btoul(ea->ndte); 1650 1651 bzero(mode_buffer, mode_buffer_len); 1652 1653 /* 1654 * Now get the device capabilities page. 1655 */ 1656 scsi_mode_sense(&ccb->csio, 1657 /* retries */ 1, 1658 /* cbfcnp */ chdone, 1659 /* tag_action */ MSG_SIMPLE_Q_TAG, 1660 /* dbd */ dbd, 1661 /* page_code */ SMS_PAGE_CTRL_CURRENT, 1662 /* page */ CH_DEVICE_CAP_PAGE, 1663 /* param_buf */ (u_int8_t *)mode_buffer, 1664 /* param_len */ mode_buffer_len, 1665 /* sense_len */ SSD_FULL_SIZE, 1666 /* timeout */ CH_TIMEOUT_MODE_SENSE); 1667 1668 error = cam_periph_runccb(ccb, cherror, /*cam_flags*/ CAM_RETRY_SELTO, 1669 /* sense_flags */ SF_RETRY_UA | SF_NO_PRINT, 1670 softc->device_stats); 1671 1672 if (error) { 1673 if (dbd) { 1674 struct scsi_mode_sense_6 *sms; 1675 1676 sms = (struct scsi_mode_sense_6 *) 1677 ccb->csio.cdb_io.cdb_bytes; 1678 1679 sms->byte2 &= ~SMS_DBD; 1680 error = cam_periph_runccb(ccb, cherror, 1681 /*cam_flags*/ CAM_RETRY_SELTO, 1682 /*sense_flags*/ SF_RETRY_UA, 1683 softc->device_stats); 1684 } else { 1685 /* 1686 * Since we disabled sense printing above, print 1687 * out the sense here since we got an error. 1688 */ 1689 scsi_sense_print(&ccb->csio); 1690 } 1691 1692 if (error) { 1693 xpt_print(periph->path, 1694 "chgetparams: error getting device " 1695 "capabilities page\n"); 1696 xpt_release_ccb(ccb); 1697 free(mode_buffer, M_SCSICH); 1698 return(error); 1699 } 1700 } 1701 1702 xpt_release_ccb(ccb); 1703 1704 cap = (struct page_device_capabilities *) 1705 find_mode_page_6((struct scsi_mode_header_6 *)mode_buffer); 1706 1707 bzero(softc->sc_movemask, sizeof(softc->sc_movemask)); 1708 bzero(softc->sc_exchangemask, sizeof(softc->sc_exchangemask)); 1709 moves = cap->move_from; 1710 exchanges = cap->exchange_with; 1711 for (from = CHET_MT; from <= CHET_MAX; ++from) { 1712 softc->sc_movemask[from] = moves[from]; 1713 softc->sc_exchangemask[from] = exchanges[from]; 1714 } 1715 1716 free(mode_buffer, M_SCSICH); 1717 1718 return(error); 1719} 1720 1721static int 1722chscsiversion(struct cam_periph *periph) 1723{ 1724 struct scsi_inquiry_data *inq_data; 1725 struct ccb_getdev *cgd; 1726 int dev_scsi_version; 1727 struct cam_sim *sim; 1728 1729 sim = xpt_path_sim(periph->path); 1730 mtx_assert(sim->mtx, MA_OWNED); 1731 if ((cgd = (struct ccb_getdev *)xpt_alloc_ccb_nowait()) == NULL) 1732 return (-1); 1733 /* 1734 * Get the device information. 1735 */ 1736 xpt_setup_ccb(&cgd->ccb_h, 1737 periph->path, 1738 CAM_PRIORITY_NORMAL); 1739 cgd->ccb_h.func_code = XPT_GDEV_TYPE; 1740 xpt_action((union ccb *)cgd); 1741 1742 if (cgd->ccb_h.status != CAM_REQ_CMP) { 1743 xpt_free_ccb((union ccb *)cgd); 1744 return -1; 1745 } 1746 1747 inq_data = &cgd->inq_data; 1748 dev_scsi_version = inq_data->version; 1749 xpt_free_ccb((union ccb *)cgd); 1750 1751 return dev_scsi_version; 1752} 1753 1754void 1755scsi_move_medium(struct ccb_scsiio *csio, u_int32_t retries, 1756 void (*cbfcnp)(struct cam_periph *, union ccb *), 1757 u_int8_t tag_action, u_int32_t tea, u_int32_t src, 1758 u_int32_t dst, int invert, u_int8_t sense_len, 1759 u_int32_t timeout) 1760{ 1761 struct scsi_move_medium *scsi_cmd; 1762 1763 scsi_cmd = (struct scsi_move_medium *)&csio->cdb_io.cdb_bytes; 1764 bzero(scsi_cmd, sizeof(*scsi_cmd)); 1765 1766 scsi_cmd->opcode = MOVE_MEDIUM; 1767 1768 scsi_ulto2b(tea, scsi_cmd->tea); 1769 scsi_ulto2b(src, scsi_cmd->src); 1770 scsi_ulto2b(dst, scsi_cmd->dst); 1771 1772 if (invert) 1773 scsi_cmd->invert |= MOVE_MEDIUM_INVERT; 1774 1775 cam_fill_csio(csio, 1776 retries, 1777 cbfcnp, 1778 /*flags*/ CAM_DIR_NONE, 1779 tag_action, 1780 /*data_ptr*/ NULL, 1781 /*dxfer_len*/ 0, 1782 sense_len, 1783 sizeof(*scsi_cmd), 1784 timeout); 1785} 1786 1787void 1788scsi_exchange_medium(struct ccb_scsiio *csio, u_int32_t retries, 1789 void (*cbfcnp)(struct cam_periph *, union ccb *), 1790 u_int8_t tag_action, u_int32_t tea, u_int32_t src, 1791 u_int32_t dst1, u_int32_t dst2, int invert1, 1792 int invert2, u_int8_t sense_len, u_int32_t timeout) 1793{ 1794 struct scsi_exchange_medium *scsi_cmd; 1795 1796 scsi_cmd = (struct scsi_exchange_medium *)&csio->cdb_io.cdb_bytes; 1797 bzero(scsi_cmd, sizeof(*scsi_cmd)); 1798 1799 scsi_cmd->opcode = EXCHANGE_MEDIUM; 1800 1801 scsi_ulto2b(tea, scsi_cmd->tea); 1802 scsi_ulto2b(src, scsi_cmd->src); 1803 scsi_ulto2b(dst1, scsi_cmd->fdst); 1804 scsi_ulto2b(dst2, scsi_cmd->sdst); 1805 1806 if (invert1) 1807 scsi_cmd->invert |= EXCHANGE_MEDIUM_INV1; 1808 1809 if (invert2) 1810 scsi_cmd->invert |= EXCHANGE_MEDIUM_INV2; 1811 1812 cam_fill_csio(csio, 1813 retries, 1814 cbfcnp, 1815 /*flags*/ CAM_DIR_NONE, 1816 tag_action, 1817 /*data_ptr*/ NULL, 1818 /*dxfer_len*/ 0, 1819 sense_len, 1820 sizeof(*scsi_cmd), 1821 timeout); 1822} 1823 1824void 1825scsi_position_to_element(struct ccb_scsiio *csio, u_int32_t retries, 1826 void (*cbfcnp)(struct cam_periph *, union ccb *), 1827 u_int8_t tag_action, u_int32_t tea, u_int32_t dst, 1828 int invert, u_int8_t sense_len, u_int32_t timeout) 1829{ 1830 struct scsi_position_to_element *scsi_cmd; 1831 1832 scsi_cmd = (struct scsi_position_to_element *)&csio->cdb_io.cdb_bytes; 1833 bzero(scsi_cmd, sizeof(*scsi_cmd)); 1834 1835 scsi_cmd->opcode = POSITION_TO_ELEMENT; 1836 1837 scsi_ulto2b(tea, scsi_cmd->tea); 1838 scsi_ulto2b(dst, scsi_cmd->dst); 1839 1840 if (invert) 1841 scsi_cmd->invert |= POSITION_TO_ELEMENT_INVERT; 1842 1843 cam_fill_csio(csio, 1844 retries, 1845 cbfcnp, 1846 /*flags*/ CAM_DIR_NONE, 1847 tag_action, 1848 /*data_ptr*/ NULL, 1849 /*dxfer_len*/ 0, 1850 sense_len, 1851 sizeof(*scsi_cmd), 1852 timeout); 1853} 1854 1855void 1856scsi_read_element_status(struct ccb_scsiio *csio, u_int32_t retries, 1857 void (*cbfcnp)(struct cam_periph *, union ccb *), 1858 u_int8_t tag_action, int voltag, u_int32_t sea, 1859 int curdata, int dvcid, 1860 u_int32_t count, u_int8_t *data_ptr, 1861 u_int32_t dxfer_len, u_int8_t sense_len, 1862 u_int32_t timeout) 1863{ 1864 struct scsi_read_element_status *scsi_cmd; 1865 1866 scsi_cmd = (struct scsi_read_element_status *)&csio->cdb_io.cdb_bytes; 1867 bzero(scsi_cmd, sizeof(*scsi_cmd)); 1868 1869 scsi_cmd->opcode = READ_ELEMENT_STATUS; 1870 1871 scsi_ulto2b(sea, scsi_cmd->sea); 1872 scsi_ulto2b(count, scsi_cmd->count); 1873 scsi_ulto3b(dxfer_len, scsi_cmd->len); 1874 if (dvcid) 1875 scsi_cmd->flags |= READ_ELEMENT_STATUS_DVCID; 1876 if (curdata) 1877 scsi_cmd->flags |= READ_ELEMENT_STATUS_CURDATA; 1878 1879 if (voltag) 1880 scsi_cmd->byte2 |= READ_ELEMENT_STATUS_VOLTAG; 1881 1882 cam_fill_csio(csio, 1883 retries, 1884 cbfcnp, 1885 /*flags*/ CAM_DIR_IN, 1886 tag_action, 1887 data_ptr, 1888 dxfer_len, 1889 sense_len, 1890 sizeof(*scsi_cmd), 1891 timeout); 1892} 1893 1894void 1895scsi_initialize_element_status(struct ccb_scsiio *csio, u_int32_t retries, 1896 void (*cbfcnp)(struct cam_periph *, union ccb *), 1897 u_int8_t tag_action, u_int8_t sense_len, 1898 u_int32_t timeout) 1899{ 1900 struct scsi_initialize_element_status *scsi_cmd; 1901 1902 scsi_cmd = (struct scsi_initialize_element_status *) 1903 &csio->cdb_io.cdb_bytes; 1904 bzero(scsi_cmd, sizeof(*scsi_cmd)); 1905 1906 scsi_cmd->opcode = INITIALIZE_ELEMENT_STATUS; 1907 1908 cam_fill_csio(csio, 1909 retries, 1910 cbfcnp, 1911 /*flags*/ CAM_DIR_NONE, 1912 tag_action, 1913 /* data_ptr */ NULL, 1914 /* dxfer_len */ 0, 1915 sense_len, 1916 sizeof(*scsi_cmd), 1917 timeout); 1918} 1919 1920void 1921scsi_send_volume_tag(struct ccb_scsiio *csio, u_int32_t retries, 1922 void (*cbfcnp)(struct cam_periph *, union ccb *), 1923 u_int8_t tag_action, 1924 u_int16_t element_address, 1925 u_int8_t send_action_code, 1926 struct scsi_send_volume_tag_parameters *parameters, 1927 u_int8_t sense_len, u_int32_t timeout) 1928{ 1929 struct scsi_send_volume_tag *scsi_cmd; 1930 1931 scsi_cmd = (struct scsi_send_volume_tag *) &csio->cdb_io.cdb_bytes; 1932 bzero(scsi_cmd, sizeof(*scsi_cmd)); 1933 1934 scsi_cmd->opcode = SEND_VOLUME_TAG; 1935 scsi_ulto2b(element_address, scsi_cmd->ea); 1936 scsi_cmd->sac = send_action_code; 1937 scsi_ulto2b(sizeof(*parameters), scsi_cmd->pll); 1938 1939 cam_fill_csio(csio, 1940 retries, 1941 cbfcnp, 1942 /*flags*/ CAM_DIR_OUT, 1943 tag_action, 1944 /* data_ptr */ (u_int8_t *) parameters, 1945 sizeof(*parameters), 1946 sense_len, 1947 sizeof(*scsi_cmd), 1948 timeout); 1949} 1950