1 /*- 2 * SPDX-License-Identifier: (BSD-2-Clause AND BSD-4-Clause) 3 * 4 * Copyright (c) 1997 Justin T. Gibbs. 5 * Copyright (c) 1997, 1998, 1999 Kenneth D. Merry. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions, and the following disclaimer, 13 * without modification, immediately at the beginning of the file. 14 * 2. The name of the author may not be used to endorse or promote products 15 * derived from this software without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR 21 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30 /*- 31 * Copyright (c) 1996, 1997 Jason R. Thorpe <thorpej@and.com> 32 * All rights reserved. 33 * 34 * Partially based on an autochanger driver written by Stefan Grefen 35 * and on an autochanger driver written by the Systems Programming Group 36 * at the University of Utah Computer Science Department. 37 * 38 * Redistribution and use in source and binary forms, with or without 39 * modification, are permitted provided that the following conditions 40 * are met: 41 * 1. Redistributions of source code must retain the above copyright 42 * notice, this list of conditions and the following disclaimer. 43 * 2. Redistributions in binary form must reproduce the above copyright 44 * notice, this list of conditions and the following disclaimer in the 45 * documentation and/or other materials provided with the distribution. 46 * 3. All advertising materials mentioning features or use of this software 47 * must display the following acknowledgements: 48 * This product includes software developed by Jason R. Thorpe 49 * for And Communications, http://www.and.com/ 50 * 4. The name of the author may not be used to endorse or promote products 51 * derived from this software without specific prior written permission. 52 * 53 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 54 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 55 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 56 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 57 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 58 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 59 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 60 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 61 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 62 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 63 * SUCH DAMAGE. 64 * 65 * $NetBSD: ch.c,v 1.34 1998/08/31 22:28:06 cgd Exp $ 66 */ 67 68 #include <sys/cdefs.h> 69 __FBSDID("$FreeBSD$"); 70 71 #include <sys/param.h> 72 #include <sys/queue.h> 73 #include <sys/systm.h> 74 #include <sys/kernel.h> 75 #include <sys/types.h> 76 #include <sys/malloc.h> 77 #include <sys/fcntl.h> 78 #include <sys/conf.h> 79 #include <sys/chio.h> 80 #include <sys/errno.h> 81 #include <sys/devicestat.h> 82 83 #include <cam/cam.h> 84 #include <cam/cam_ccb.h> 85 #include <cam/cam_periph.h> 86 #include <cam/cam_xpt_periph.h> 87 #include <cam/cam_debug.h> 88 89 #include <cam/scsi/scsi_all.h> 90 #include <cam/scsi/scsi_message.h> 91 #include <cam/scsi/scsi_ch.h> 92 93 /* 94 * Timeout definitions for various changer related commands. They may 95 * be too short for some devices (especially the timeout for INITIALIZE 96 * ELEMENT STATUS). 97 */ 98 99 static const u_int32_t CH_TIMEOUT_MODE_SENSE = 6000; 100 static const u_int32_t CH_TIMEOUT_MOVE_MEDIUM = 15 * 60 * 1000; 101 static const u_int32_t CH_TIMEOUT_EXCHANGE_MEDIUM = 15 * 60 * 1000; 102 static const u_int32_t CH_TIMEOUT_POSITION_TO_ELEMENT = 15 * 60 * 1000; 103 static const u_int32_t CH_TIMEOUT_READ_ELEMENT_STATUS = 5 * 60 * 1000; 104 static const u_int32_t CH_TIMEOUT_SEND_VOLTAG = 10000; 105 static const u_int32_t CH_TIMEOUT_INITIALIZE_ELEMENT_STATUS = 500000; 106 107 typedef enum { 108 CH_FLAG_INVALID = 0x001 109 } ch_flags; 110 111 typedef enum { 112 CH_STATE_PROBE, 113 CH_STATE_NORMAL 114 } ch_state; 115 116 typedef enum { 117 CH_CCB_PROBE 118 } ch_ccb_types; 119 120 typedef enum { 121 CH_Q_NONE = 0x00, 122 CH_Q_NO_DBD = 0x01, 123 CH_Q_NO_DVCID = 0x02 124 } ch_quirks; 125 126 #define CH_Q_BIT_STRING \ 127 "\020" \ 128 "\001NO_DBD" \ 129 "\002NO_DVCID" 130 131 #define ccb_state ppriv_field0 132 #define ccb_bp ppriv_ptr1 133 134 struct scsi_mode_sense_data { 135 struct scsi_mode_header_6 header; 136 struct scsi_mode_blk_desc blk_desc; 137 union { 138 struct page_element_address_assignment ea; 139 struct page_transport_geometry_parameters tg; 140 struct page_device_capabilities cap; 141 } pages; 142 }; 143 144 struct ch_softc { 145 ch_flags flags; 146 ch_state state; 147 ch_quirks quirks; 148 struct devstat *device_stats; 149 struct cdev *dev; 150 int open_count; 151 152 int sc_picker; /* current picker */ 153 154 /* 155 * The following information is obtained from the 156 * element address assignment page. 157 */ 158 int sc_firsts[CHET_MAX + 1]; /* firsts */ 159 int sc_counts[CHET_MAX + 1]; /* counts */ 160 161 /* 162 * The following mask defines the legal combinations 163 * of elements for the MOVE MEDIUM command. 164 */ 165 u_int8_t sc_movemask[CHET_MAX + 1]; 166 167 /* 168 * As above, but for EXCHANGE MEDIUM. 169 */ 170 u_int8_t sc_exchangemask[CHET_MAX + 1]; 171 172 /* 173 * Quirks; see below. XXX KDM not implemented yet 174 */ 175 int sc_settledelay; /* delay for settle */ 176 }; 177 178 static d_open_t chopen; 179 static d_close_t chclose; 180 static d_ioctl_t chioctl; 181 static periph_init_t chinit; 182 static periph_ctor_t chregister; 183 static periph_oninv_t choninvalidate; 184 static periph_dtor_t chcleanup; 185 static periph_start_t chstart; 186 static void chasync(void *callback_arg, u_int32_t code, 187 struct cam_path *path, void *arg); 188 static void chdone(struct cam_periph *periph, 189 union ccb *done_ccb); 190 static int cherror(union ccb *ccb, u_int32_t cam_flags, 191 u_int32_t sense_flags); 192 static int chmove(struct cam_periph *periph, 193 struct changer_move *cm); 194 static int chexchange(struct cam_periph *periph, 195 struct changer_exchange *ce); 196 static int chposition(struct cam_periph *periph, 197 struct changer_position *cp); 198 static int chgetelemstatus(struct cam_periph *periph, 199 int scsi_version, u_long cmd, 200 struct changer_element_status_request *csr); 201 static int chsetvoltag(struct cam_periph *periph, 202 struct changer_set_voltag_request *csvr); 203 static int chielem(struct cam_periph *periph, 204 unsigned int timeout); 205 static int chgetparams(struct cam_periph *periph); 206 static int chscsiversion(struct cam_periph *periph); 207 208 static struct periph_driver chdriver = 209 { 210 chinit, "ch", 211 TAILQ_HEAD_INITIALIZER(chdriver.units), /* generation */ 0 212 }; 213 214 PERIPHDRIVER_DECLARE(ch, chdriver); 215 216 static struct cdevsw ch_cdevsw = { 217 .d_version = D_VERSION, 218 .d_flags = D_TRACKCLOSE, 219 .d_open = chopen, 220 .d_close = chclose, 221 .d_ioctl = chioctl, 222 .d_name = "ch", 223 }; 224 225 static MALLOC_DEFINE(M_SCSICH, "scsi_ch", "scsi_ch buffers"); 226 227 static void 228 chinit(void) 229 { 230 cam_status status; 231 232 /* 233 * Install a global async callback. This callback will 234 * receive async callbacks like "new device found". 235 */ 236 status = xpt_register_async(AC_FOUND_DEVICE, chasync, NULL, NULL); 237 238 if (status != CAM_REQ_CMP) { 239 printf("ch: Failed to attach master async callback " 240 "due to status 0x%x!\n", status); 241 } 242 } 243 244 static void 245 chdevgonecb(void *arg) 246 { 247 struct ch_softc *softc; 248 struct cam_periph *periph; 249 struct mtx *mtx; 250 int i; 251 252 periph = (struct cam_periph *)arg; 253 mtx = cam_periph_mtx(periph); 254 mtx_lock(mtx); 255 256 softc = (struct ch_softc *)periph->softc; 257 KASSERT(softc->open_count >= 0, ("Negative open count %d", 258 softc->open_count)); 259 260 /* 261 * When we get this callback, we will get no more close calls from 262 * devfs. So if we have any dangling opens, we need to release the 263 * reference held for that particular context. 264 */ 265 for (i = 0; i < softc->open_count; i++) 266 cam_periph_release_locked(periph); 267 268 softc->open_count = 0; 269 270 /* 271 * Release the reference held for the device node, it is gone now. 272 */ 273 cam_periph_release_locked(periph); 274 275 /* 276 * We reference the lock directly here, instead of using 277 * cam_periph_unlock(). The reason is that the final call to 278 * cam_periph_release_locked() above could result in the periph 279 * getting freed. If that is the case, dereferencing the periph 280 * with a cam_periph_unlock() call would cause a page fault. 281 */ 282 mtx_unlock(mtx); 283 } 284 285 static void 286 choninvalidate(struct cam_periph *periph) 287 { 288 struct ch_softc *softc; 289 290 softc = (struct ch_softc *)periph->softc; 291 292 /* 293 * De-register any async callbacks. 294 */ 295 xpt_register_async(0, chasync, periph, periph->path); 296 297 softc->flags |= CH_FLAG_INVALID; 298 299 /* 300 * Tell devfs this device has gone away, and ask for a callback 301 * when it has cleaned up its state. 302 */ 303 destroy_dev_sched_cb(softc->dev, chdevgonecb, periph); 304 } 305 306 static void 307 chcleanup(struct cam_periph *periph) 308 { 309 struct ch_softc *softc; 310 311 softc = (struct ch_softc *)periph->softc; 312 313 devstat_remove_entry(softc->device_stats); 314 315 free(softc, M_DEVBUF); 316 } 317 318 static void 319 chasync(void *callback_arg, u_int32_t code, struct cam_path *path, void *arg) 320 { 321 struct cam_periph *periph; 322 323 periph = (struct cam_periph *)callback_arg; 324 325 switch(code) { 326 case AC_FOUND_DEVICE: 327 { 328 struct ccb_getdev *cgd; 329 cam_status status; 330 331 cgd = (struct ccb_getdev *)arg; 332 if (cgd == NULL) 333 break; 334 335 if (cgd->protocol != PROTO_SCSI) 336 break; 337 if (SID_QUAL(&cgd->inq_data) != SID_QUAL_LU_CONNECTED) 338 break; 339 if (SID_TYPE(&cgd->inq_data)!= T_CHANGER) 340 break; 341 342 /* 343 * Allocate a peripheral instance for 344 * this device and start the probe 345 * process. 346 */ 347 status = cam_periph_alloc(chregister, choninvalidate, 348 chcleanup, chstart, "ch", 349 CAM_PERIPH_BIO, path, 350 chasync, AC_FOUND_DEVICE, cgd); 351 352 if (status != CAM_REQ_CMP 353 && status != CAM_REQ_INPROG) 354 printf("chasync: Unable to probe new device " 355 "due to status 0x%x\n", status); 356 357 break; 358 } 359 default: 360 cam_periph_async(periph, code, path, arg); 361 break; 362 } 363 } 364 365 static cam_status 366 chregister(struct cam_periph *periph, void *arg) 367 { 368 struct ch_softc *softc; 369 struct ccb_getdev *cgd; 370 struct ccb_pathinq cpi; 371 struct make_dev_args args; 372 int error; 373 374 cgd = (struct ccb_getdev *)arg; 375 if (cgd == NULL) { 376 printf("chregister: no getdev CCB, can't register device\n"); 377 return(CAM_REQ_CMP_ERR); 378 } 379 380 softc = (struct ch_softc *)malloc(sizeof(*softc),M_DEVBUF,M_NOWAIT); 381 382 if (softc == NULL) { 383 printf("chregister: Unable to probe new device. " 384 "Unable to allocate softc\n"); 385 return(CAM_REQ_CMP_ERR); 386 } 387 388 bzero(softc, sizeof(*softc)); 389 softc->state = CH_STATE_PROBE; 390 periph->softc = softc; 391 softc->quirks = CH_Q_NONE; 392 393 /* 394 * The DVCID and CURDATA bits were not introduced until the SMC 395 * spec. If this device claims SCSI-2 or earlier support, then it 396 * very likely does not support these bits. 397 */ 398 if (cgd->inq_data.version <= SCSI_REV_2) 399 softc->quirks |= CH_Q_NO_DVCID; 400 401 xpt_path_inq(&cpi, periph->path); 402 403 /* 404 * Changers don't have a blocksize, and obviously don't support 405 * tagged queueing. 406 */ 407 cam_periph_unlock(periph); 408 softc->device_stats = devstat_new_entry("ch", 409 periph->unit_number, 0, 410 DEVSTAT_NO_BLOCKSIZE | DEVSTAT_NO_ORDERED_TAGS, 411 SID_TYPE(&cgd->inq_data) | 412 XPORT_DEVSTAT_TYPE(cpi.transport), 413 DEVSTAT_PRIORITY_OTHER); 414 415 /* 416 * Acquire a reference to the periph before we create the devfs 417 * instance for it. We'll release this reference once the devfs 418 * instance has been freed. 419 */ 420 if (cam_periph_acquire(periph) != 0) { 421 xpt_print(periph->path, "%s: lost periph during " 422 "registration!\n", __func__); 423 cam_periph_lock(periph); 424 return (CAM_REQ_CMP_ERR); 425 } 426 427 /* Register the device */ 428 make_dev_args_init(&args); 429 args.mda_devsw = &ch_cdevsw; 430 args.mda_unit = periph->unit_number; 431 args.mda_uid = UID_ROOT; 432 args.mda_gid = GID_OPERATOR; 433 args.mda_mode = 0600; 434 args.mda_si_drv1 = periph; 435 error = make_dev_s(&args, &softc->dev, "%s%d", periph->periph_name, 436 periph->unit_number); 437 cam_periph_lock(periph); 438 if (error != 0) { 439 cam_periph_release_locked(periph); 440 return (CAM_REQ_CMP_ERR); 441 } 442 443 /* 444 * Add an async callback so that we get 445 * notified if this device goes away. 446 */ 447 xpt_register_async(AC_LOST_DEVICE, chasync, periph, periph->path); 448 449 /* 450 * Lock this periph until we are setup. 451 * This first call can't block 452 */ 453 (void)cam_periph_hold(periph, PRIBIO); 454 xpt_schedule(periph, CAM_PRIORITY_DEV); 455 456 return(CAM_REQ_CMP); 457 } 458 459 static int 460 chopen(struct cdev *dev, int flags, int fmt, struct thread *td) 461 { 462 struct cam_periph *periph; 463 struct ch_softc *softc; 464 int error; 465 466 periph = (struct cam_periph *)dev->si_drv1; 467 if (cam_periph_acquire(periph) != 0) 468 return (ENXIO); 469 470 softc = (struct ch_softc *)periph->softc; 471 472 cam_periph_lock(periph); 473 474 if (softc->flags & CH_FLAG_INVALID) { 475 cam_periph_release_locked(periph); 476 cam_periph_unlock(periph); 477 return(ENXIO); 478 } 479 480 if ((error = cam_periph_hold(periph, PRIBIO | PCATCH)) != 0) { 481 cam_periph_unlock(periph); 482 cam_periph_release(periph); 483 return (error); 484 } 485 486 /* 487 * Load information about this changer device into the softc. 488 */ 489 if ((error = chgetparams(periph)) != 0) { 490 cam_periph_unhold(periph); 491 cam_periph_release_locked(periph); 492 cam_periph_unlock(periph); 493 return(error); 494 } 495 496 cam_periph_unhold(periph); 497 498 softc->open_count++; 499 500 cam_periph_unlock(periph); 501 502 return(error); 503 } 504 505 static int 506 chclose(struct cdev *dev, int flag, int fmt, struct thread *td) 507 { 508 struct cam_periph *periph; 509 struct ch_softc *softc; 510 struct mtx *mtx; 511 512 periph = (struct cam_periph *)dev->si_drv1; 513 mtx = cam_periph_mtx(periph); 514 mtx_lock(mtx); 515 516 softc = (struct ch_softc *)periph->softc; 517 softc->open_count--; 518 519 cam_periph_release_locked(periph); 520 521 /* 522 * We reference the lock directly here, instead of using 523 * cam_periph_unlock(). The reason is that the call to 524 * cam_periph_release_locked() above could result in the periph 525 * getting freed. If that is the case, dereferencing the periph 526 * with a cam_periph_unlock() call would cause a page fault. 527 * 528 * cam_periph_release() avoids this problem using the same method, 529 * but we're manually acquiring and dropping the lock here to 530 * protect the open count and avoid another lock acquisition and 531 * release. 532 */ 533 mtx_unlock(mtx); 534 535 return(0); 536 } 537 538 static void 539 chstart(struct cam_periph *periph, union ccb *start_ccb) 540 { 541 struct ch_softc *softc; 542 543 softc = (struct ch_softc *)periph->softc; 544 545 switch (softc->state) { 546 case CH_STATE_NORMAL: 547 { 548 xpt_release_ccb(start_ccb); 549 break; 550 } 551 case CH_STATE_PROBE: 552 { 553 int mode_buffer_len; 554 void *mode_buffer; 555 556 /* 557 * Include the block descriptor when calculating the mode 558 * buffer length, 559 */ 560 mode_buffer_len = sizeof(struct scsi_mode_header_6) + 561 sizeof(struct scsi_mode_blk_desc) + 562 sizeof(struct page_element_address_assignment); 563 564 mode_buffer = malloc(mode_buffer_len, M_SCSICH, M_NOWAIT); 565 566 if (mode_buffer == NULL) { 567 printf("chstart: couldn't malloc mode sense data\n"); 568 break; 569 } 570 bzero(mode_buffer, mode_buffer_len); 571 572 /* 573 * Get the element address assignment page. 574 */ 575 scsi_mode_sense(&start_ccb->csio, 576 /* retries */ 1, 577 /* cbfcnp */ chdone, 578 /* tag_action */ MSG_SIMPLE_Q_TAG, 579 /* dbd */ (softc->quirks & CH_Q_NO_DBD) ? 580 FALSE : TRUE, 581 /* pc */ SMS_PAGE_CTRL_CURRENT, 582 /* page */ CH_ELEMENT_ADDR_ASSIGN_PAGE, 583 /* param_buf */ (u_int8_t *)mode_buffer, 584 /* param_len */ mode_buffer_len, 585 /* sense_len */ SSD_FULL_SIZE, 586 /* timeout */ CH_TIMEOUT_MODE_SENSE); 587 588 start_ccb->ccb_h.ccb_bp = NULL; 589 start_ccb->ccb_h.ccb_state = CH_CCB_PROBE; 590 xpt_action(start_ccb); 591 break; 592 } 593 } 594 } 595 596 static void 597 chdone(struct cam_periph *periph, union ccb *done_ccb) 598 { 599 struct ch_softc *softc; 600 struct ccb_scsiio *csio; 601 602 softc = (struct ch_softc *)periph->softc; 603 csio = &done_ccb->csio; 604 605 switch(done_ccb->ccb_h.ccb_state) { 606 case CH_CCB_PROBE: 607 { 608 struct scsi_mode_header_6 *mode_header; 609 struct page_element_address_assignment *ea; 610 char announce_buf[80]; 611 612 mode_header = (struct scsi_mode_header_6 *)csio->data_ptr; 613 614 ea = (struct page_element_address_assignment *) 615 find_mode_page_6(mode_header); 616 617 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP){ 618 619 softc->sc_firsts[CHET_MT] = scsi_2btoul(ea->mtea); 620 softc->sc_counts[CHET_MT] = scsi_2btoul(ea->nmte); 621 softc->sc_firsts[CHET_ST] = scsi_2btoul(ea->fsea); 622 softc->sc_counts[CHET_ST] = scsi_2btoul(ea->nse); 623 softc->sc_firsts[CHET_IE] = scsi_2btoul(ea->fieea); 624 softc->sc_counts[CHET_IE] = scsi_2btoul(ea->niee); 625 softc->sc_firsts[CHET_DT] = scsi_2btoul(ea->fdtea); 626 softc->sc_counts[CHET_DT] = scsi_2btoul(ea->ndte); 627 softc->sc_picker = softc->sc_firsts[CHET_MT]; 628 629 #define PLURAL(c) (c) == 1 ? "" : "s" 630 snprintf(announce_buf, sizeof(announce_buf), 631 "%d slot%s, %d drive%s, " 632 "%d picker%s, %d portal%s", 633 softc->sc_counts[CHET_ST], 634 PLURAL(softc->sc_counts[CHET_ST]), 635 softc->sc_counts[CHET_DT], 636 PLURAL(softc->sc_counts[CHET_DT]), 637 softc->sc_counts[CHET_MT], 638 PLURAL(softc->sc_counts[CHET_MT]), 639 softc->sc_counts[CHET_IE], 640 PLURAL(softc->sc_counts[CHET_IE])); 641 #undef PLURAL 642 if (announce_buf[0] != '\0') { 643 xpt_announce_periph(periph, announce_buf); 644 xpt_announce_quirks(periph, softc->quirks, 645 CH_Q_BIT_STRING); 646 } 647 } else { 648 int error; 649 650 error = cherror(done_ccb, CAM_RETRY_SELTO, 651 SF_RETRY_UA | SF_NO_PRINT); 652 /* 653 * Retry any UNIT ATTENTION type errors. They 654 * are expected at boot. 655 */ 656 if (error == ERESTART) { 657 /* 658 * A retry was scheduled, so 659 * just return. 660 */ 661 return; 662 } else if (error != 0) { 663 struct scsi_mode_sense_6 *sms; 664 int frozen, retry_scheduled; 665 666 sms = (struct scsi_mode_sense_6 *) 667 done_ccb->csio.cdb_io.cdb_bytes; 668 frozen = (done_ccb->ccb_h.status & 669 CAM_DEV_QFRZN) != 0; 670 671 /* 672 * Check to see if block descriptors were 673 * disabled. Some devices don't like that. 674 * We're taking advantage of the fact that 675 * the first few bytes of the 6 and 10 byte 676 * mode sense commands are the same. If 677 * block descriptors were disabled, enable 678 * them and re-send the command. 679 */ 680 if ((sms->byte2 & SMS_DBD) != 0 && 681 (periph->flags & CAM_PERIPH_INVALID) == 0) { 682 sms->byte2 &= ~SMS_DBD; 683 xpt_action(done_ccb); 684 softc->quirks |= CH_Q_NO_DBD; 685 retry_scheduled = 1; 686 } else 687 retry_scheduled = 0; 688 689 /* Don't wedge this device's queue */ 690 if (frozen) 691 cam_release_devq(done_ccb->ccb_h.path, 692 /*relsim_flags*/0, 693 /*reduction*/0, 694 /*timeout*/0, 695 /*getcount_only*/0); 696 697 if (retry_scheduled) 698 return; 699 700 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) 701 == CAM_SCSI_STATUS_ERROR) 702 scsi_sense_print(&done_ccb->csio); 703 else { 704 xpt_print(periph->path, 705 "got CAM status %#x\n", 706 done_ccb->ccb_h.status); 707 } 708 xpt_print(periph->path, "fatal error, failed " 709 "to attach to device\n"); 710 711 cam_periph_invalidate(periph); 712 } 713 } 714 softc->state = CH_STATE_NORMAL; 715 free(mode_header, M_SCSICH); 716 /* 717 * Since our peripheral may be invalidated by an error 718 * above or an external event, we must release our CCB 719 * before releasing the probe lock on the peripheral. 720 * The peripheral will only go away once the last lock 721 * is removed, and we need it around for the CCB release 722 * operation. 723 */ 724 xpt_release_ccb(done_ccb); 725 cam_periph_unhold(periph); 726 return; 727 } 728 default: 729 break; 730 } 731 xpt_release_ccb(done_ccb); 732 } 733 734 static int 735 cherror(union ccb *ccb, u_int32_t cam_flags, u_int32_t sense_flags) 736 { 737 738 return (cam_periph_error(ccb, cam_flags, sense_flags)); 739 } 740 741 static int 742 chioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flag, struct thread *td) 743 { 744 struct cam_periph *periph; 745 struct ch_softc *softc; 746 int error; 747 748 periph = (struct cam_periph *)dev->si_drv1; 749 cam_periph_lock(periph); 750 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("entering chioctl\n")); 751 752 softc = (struct ch_softc *)periph->softc; 753 754 error = 0; 755 756 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, 757 ("trying to do ioctl %#lx\n", cmd)); 758 759 /* 760 * If this command can change the device's state, we must 761 * have the device open for writing. 762 */ 763 switch (cmd) { 764 case CHIOGPICKER: 765 case CHIOGPARAMS: 766 case OCHIOGSTATUS: 767 case CHIOGSTATUS: 768 break; 769 770 default: 771 if ((flag & FWRITE) == 0) { 772 cam_periph_unlock(periph); 773 return (EBADF); 774 } 775 } 776 777 switch (cmd) { 778 case CHIOMOVE: 779 error = chmove(periph, (struct changer_move *)addr); 780 break; 781 782 case CHIOEXCHANGE: 783 error = chexchange(periph, (struct changer_exchange *)addr); 784 break; 785 786 case CHIOPOSITION: 787 error = chposition(periph, (struct changer_position *)addr); 788 break; 789 790 case CHIOGPICKER: 791 *(int *)addr = softc->sc_picker - softc->sc_firsts[CHET_MT]; 792 break; 793 794 case CHIOSPICKER: 795 { 796 int new_picker = *(int *)addr; 797 798 if (new_picker > (softc->sc_counts[CHET_MT] - 1)) { 799 error = EINVAL; 800 break; 801 } 802 softc->sc_picker = softc->sc_firsts[CHET_MT] + new_picker; 803 break; 804 } 805 case CHIOGPARAMS: 806 { 807 struct changer_params *cp = (struct changer_params *)addr; 808 809 cp->cp_npickers = softc->sc_counts[CHET_MT]; 810 cp->cp_nslots = softc->sc_counts[CHET_ST]; 811 cp->cp_nportals = softc->sc_counts[CHET_IE]; 812 cp->cp_ndrives = softc->sc_counts[CHET_DT]; 813 break; 814 } 815 case CHIOIELEM: 816 error = chielem(periph, *(unsigned int *)addr); 817 break; 818 819 case OCHIOGSTATUS: 820 { 821 error = chgetelemstatus(periph, SCSI_REV_2, cmd, 822 (struct changer_element_status_request *)addr); 823 break; 824 } 825 826 case CHIOGSTATUS: 827 { 828 int scsi_version; 829 830 scsi_version = chscsiversion(periph); 831 if (scsi_version >= SCSI_REV_0) { 832 error = chgetelemstatus(periph, scsi_version, cmd, 833 (struct changer_element_status_request *)addr); 834 } 835 else { /* unable to determine the SCSI version */ 836 cam_periph_unlock(periph); 837 return (ENXIO); 838 } 839 break; 840 } 841 842 case CHIOSETVOLTAG: 843 { 844 error = chsetvoltag(periph, 845 (struct changer_set_voltag_request *) addr); 846 break; 847 } 848 849 /* Implement prevent/allow? */ 850 851 default: 852 error = cam_periph_ioctl(periph, cmd, addr, cherror); 853 break; 854 } 855 856 cam_periph_unlock(periph); 857 return (error); 858 } 859 860 static int 861 chmove(struct cam_periph *periph, struct changer_move *cm) 862 { 863 struct ch_softc *softc; 864 u_int16_t fromelem, toelem; 865 union ccb *ccb; 866 int error; 867 868 error = 0; 869 softc = (struct ch_softc *)periph->softc; 870 871 /* 872 * Check arguments. 873 */ 874 if ((cm->cm_fromtype > CHET_DT) || (cm->cm_totype > CHET_DT)) 875 return (EINVAL); 876 if ((cm->cm_fromunit > (softc->sc_counts[cm->cm_fromtype] - 1)) || 877 (cm->cm_tounit > (softc->sc_counts[cm->cm_totype] - 1))) 878 return (ENODEV); 879 880 /* 881 * Check the request against the changer's capabilities. 882 */ 883 if ((softc->sc_movemask[cm->cm_fromtype] & (1 << cm->cm_totype)) == 0) 884 return (ENODEV); 885 886 /* 887 * Calculate the source and destination elements. 888 */ 889 fromelem = softc->sc_firsts[cm->cm_fromtype] + cm->cm_fromunit; 890 toelem = softc->sc_firsts[cm->cm_totype] + cm->cm_tounit; 891 892 ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL); 893 894 scsi_move_medium(&ccb->csio, 895 /* retries */ 1, 896 /* cbfcnp */ chdone, 897 /* tag_action */ MSG_SIMPLE_Q_TAG, 898 /* tea */ softc->sc_picker, 899 /* src */ fromelem, 900 /* dst */ toelem, 901 /* invert */ (cm->cm_flags & CM_INVERT) ? TRUE : FALSE, 902 /* sense_len */ SSD_FULL_SIZE, 903 /* timeout */ CH_TIMEOUT_MOVE_MEDIUM); 904 905 error = cam_periph_runccb(ccb, cherror, /*cam_flags*/CAM_RETRY_SELTO, 906 /*sense_flags*/ SF_RETRY_UA, 907 softc->device_stats); 908 909 xpt_release_ccb(ccb); 910 911 return(error); 912 } 913 914 static int 915 chexchange(struct cam_periph *periph, struct changer_exchange *ce) 916 { 917 struct ch_softc *softc; 918 u_int16_t src, dst1, dst2; 919 union ccb *ccb; 920 int error; 921 922 error = 0; 923 softc = (struct ch_softc *)periph->softc; 924 /* 925 * Check arguments. 926 */ 927 if ((ce->ce_srctype > CHET_DT) || (ce->ce_fdsttype > CHET_DT) || 928 (ce->ce_sdsttype > CHET_DT)) 929 return (EINVAL); 930 if ((ce->ce_srcunit > (softc->sc_counts[ce->ce_srctype] - 1)) || 931 (ce->ce_fdstunit > (softc->sc_counts[ce->ce_fdsttype] - 1)) || 932 (ce->ce_sdstunit > (softc->sc_counts[ce->ce_sdsttype] - 1))) 933 return (ENODEV); 934 935 /* 936 * Check the request against the changer's capabilities. 937 */ 938 if (((softc->sc_exchangemask[ce->ce_srctype] & 939 (1 << ce->ce_fdsttype)) == 0) || 940 ((softc->sc_exchangemask[ce->ce_fdsttype] & 941 (1 << ce->ce_sdsttype)) == 0)) 942 return (ENODEV); 943 944 /* 945 * Calculate the source and destination elements. 946 */ 947 src = softc->sc_firsts[ce->ce_srctype] + ce->ce_srcunit; 948 dst1 = softc->sc_firsts[ce->ce_fdsttype] + ce->ce_fdstunit; 949 dst2 = softc->sc_firsts[ce->ce_sdsttype] + ce->ce_sdstunit; 950 951 ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL); 952 953 scsi_exchange_medium(&ccb->csio, 954 /* retries */ 1, 955 /* cbfcnp */ chdone, 956 /* tag_action */ MSG_SIMPLE_Q_TAG, 957 /* tea */ softc->sc_picker, 958 /* src */ src, 959 /* dst1 */ dst1, 960 /* dst2 */ dst2, 961 /* invert1 */ (ce->ce_flags & CE_INVERT1) ? 962 TRUE : FALSE, 963 /* invert2 */ (ce->ce_flags & CE_INVERT2) ? 964 TRUE : FALSE, 965 /* sense_len */ SSD_FULL_SIZE, 966 /* timeout */ CH_TIMEOUT_EXCHANGE_MEDIUM); 967 968 error = cam_periph_runccb(ccb, cherror, /*cam_flags*/CAM_RETRY_SELTO, 969 /*sense_flags*/ SF_RETRY_UA, 970 softc->device_stats); 971 972 xpt_release_ccb(ccb); 973 974 return(error); 975 } 976 977 static int 978 chposition(struct cam_periph *periph, struct changer_position *cp) 979 { 980 struct ch_softc *softc; 981 u_int16_t dst; 982 union ccb *ccb; 983 int error; 984 985 error = 0; 986 softc = (struct ch_softc *)periph->softc; 987 988 /* 989 * Check arguments. 990 */ 991 if (cp->cp_type > CHET_DT) 992 return (EINVAL); 993 if (cp->cp_unit > (softc->sc_counts[cp->cp_type] - 1)) 994 return (ENODEV); 995 996 /* 997 * Calculate the destination element. 998 */ 999 dst = softc->sc_firsts[cp->cp_type] + cp->cp_unit; 1000 1001 ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL); 1002 1003 scsi_position_to_element(&ccb->csio, 1004 /* retries */ 1, 1005 /* cbfcnp */ chdone, 1006 /* tag_action */ MSG_SIMPLE_Q_TAG, 1007 /* tea */ softc->sc_picker, 1008 /* dst */ dst, 1009 /* invert */ (cp->cp_flags & CP_INVERT) ? 1010 TRUE : FALSE, 1011 /* sense_len */ SSD_FULL_SIZE, 1012 /* timeout */ CH_TIMEOUT_POSITION_TO_ELEMENT); 1013 1014 error = cam_periph_runccb(ccb, cherror, /*cam_flags*/ CAM_RETRY_SELTO, 1015 /*sense_flags*/ SF_RETRY_UA, 1016 softc->device_stats); 1017 1018 xpt_release_ccb(ccb); 1019 1020 return(error); 1021 } 1022 1023 /* 1024 * Copy a volume tag to a volume_tag struct, converting SCSI byte order 1025 * to host native byte order in the volume serial number. The volume 1026 * label as returned by the changer is transferred to user mode as 1027 * nul-terminated string. Volume labels are truncated at the first 1028 * space, as suggested by SCSI-2. 1029 */ 1030 static void 1031 copy_voltag(struct changer_voltag *uvoltag, struct volume_tag *voltag) 1032 { 1033 int i; 1034 for (i=0; i<CH_VOLTAG_MAXLEN; i++) { 1035 char c = voltag->vif[i]; 1036 if (c && c != ' ') 1037 uvoltag->cv_volid[i] = c; 1038 else 1039 break; 1040 } 1041 uvoltag->cv_serial = scsi_2btoul(voltag->vsn); 1042 } 1043 1044 /* 1045 * Copy an element status descriptor to a user-mode 1046 * changer_element_status structure. 1047 */ 1048 static void 1049 copy_element_status(struct ch_softc *softc, 1050 u_int16_t flags, 1051 struct read_element_status_descriptor *desc, 1052 struct changer_element_status *ces, 1053 int scsi_version) 1054 { 1055 u_int16_t eaddr = scsi_2btoul(desc->eaddr); 1056 u_int16_t et; 1057 struct volume_tag *pvol_tag = NULL, *avol_tag = NULL; 1058 struct read_element_status_device_id *devid = NULL; 1059 1060 ces->ces_int_addr = eaddr; 1061 /* set up logical address in element status */ 1062 for (et = CHET_MT; et <= CHET_DT; et++) { 1063 if ((softc->sc_firsts[et] <= eaddr) 1064 && ((softc->sc_firsts[et] + softc->sc_counts[et]) 1065 > eaddr)) { 1066 ces->ces_addr = eaddr - softc->sc_firsts[et]; 1067 ces->ces_type = et; 1068 break; 1069 } 1070 } 1071 1072 ces->ces_flags = desc->flags1; 1073 1074 ces->ces_sensecode = desc->sense_code; 1075 ces->ces_sensequal = desc->sense_qual; 1076 1077 if (desc->flags2 & READ_ELEMENT_STATUS_INVERT) 1078 ces->ces_flags |= CES_INVERT; 1079 1080 if (desc->flags2 & READ_ELEMENT_STATUS_SVALID) { 1081 eaddr = scsi_2btoul(desc->ssea); 1082 1083 /* convert source address to logical format */ 1084 for (et = CHET_MT; et <= CHET_DT; et++) { 1085 if ((softc->sc_firsts[et] <= eaddr) 1086 && ((softc->sc_firsts[et] + softc->sc_counts[et]) 1087 > eaddr)) { 1088 ces->ces_source_addr = 1089 eaddr - softc->sc_firsts[et]; 1090 ces->ces_source_type = et; 1091 ces->ces_flags |= CES_SOURCE_VALID; 1092 break; 1093 } 1094 } 1095 1096 if (!(ces->ces_flags & CES_SOURCE_VALID)) 1097 printf("ch: warning: could not map element source " 1098 "address %ud to a valid element type\n", 1099 eaddr); 1100 } 1101 1102 /* 1103 * pvoltag and avoltag are common between SCSI-2 and later versions 1104 */ 1105 if (flags & READ_ELEMENT_STATUS_PVOLTAG) 1106 pvol_tag = &desc->voltag_devid.pvoltag; 1107 if (flags & READ_ELEMENT_STATUS_AVOLTAG) 1108 avol_tag = (flags & READ_ELEMENT_STATUS_PVOLTAG) ? 1109 &desc->voltag_devid.voltag[1] :&desc->voltag_devid.pvoltag; 1110 /* 1111 * For SCSI-3 and later, element status can carry designator and 1112 * other information. 1113 */ 1114 if (scsi_version >= SCSI_REV_SPC) { 1115 if ((flags & READ_ELEMENT_STATUS_PVOLTAG) ^ 1116 (flags & READ_ELEMENT_STATUS_AVOLTAG)) 1117 devid = &desc->voltag_devid.pvol_and_devid.devid; 1118 else if (!(flags & READ_ELEMENT_STATUS_PVOLTAG) && 1119 !(flags & READ_ELEMENT_STATUS_AVOLTAG)) 1120 devid = &desc->voltag_devid.devid; 1121 else /* Have both PVOLTAG and AVOLTAG */ 1122 devid = &desc->voltag_devid.vol_tags_and_devid.devid; 1123 } 1124 1125 if (pvol_tag) 1126 copy_voltag(&(ces->ces_pvoltag), pvol_tag); 1127 if (avol_tag) 1128 copy_voltag(&(ces->ces_pvoltag), avol_tag); 1129 if (devid != NULL) { 1130 if (devid->designator_length > 0) { 1131 bcopy((void *)devid->designator, 1132 (void *)ces->ces_designator, 1133 devid->designator_length); 1134 ces->ces_designator_length = devid->designator_length; 1135 /* 1136 * Make sure we are always NUL terminated. The 1137 * This won't matter for the binary code set, 1138 * since the user will only pay attention to the 1139 * length field. 1140 */ 1141 ces->ces_designator[devid->designator_length]= '\0'; 1142 } 1143 if (devid->piv_assoc_designator_type & 1144 READ_ELEMENT_STATUS_PIV_SET) { 1145 ces->ces_flags |= CES_PIV; 1146 ces->ces_protocol_id = 1147 READ_ELEMENT_STATUS_PROTOCOL_ID( 1148 devid->prot_code_set); 1149 } 1150 ces->ces_code_set = 1151 READ_ELEMENT_STATUS_CODE_SET(devid->prot_code_set); 1152 ces->ces_assoc = READ_ELEMENT_STATUS_ASSOCIATION( 1153 devid->piv_assoc_designator_type); 1154 ces->ces_designator_type = READ_ELEMENT_STATUS_DESIGNATOR_TYPE( 1155 devid->piv_assoc_designator_type); 1156 } else if (scsi_version > SCSI_REV_2) { 1157 /* SCSI-SPC and No devid, no designator */ 1158 ces->ces_designator_length = 0; 1159 ces->ces_designator[0] = '\0'; 1160 ces->ces_protocol_id = CES_PROTOCOL_ID_FCP_4; 1161 } 1162 1163 if (scsi_version <= SCSI_REV_2) { 1164 if (desc->dt_or_obsolete.scsi_2.dt_scsi_flags & 1165 READ_ELEMENT_STATUS_DT_IDVALID) { 1166 ces->ces_flags |= CES_SCSIID_VALID; 1167 ces->ces_scsi_id = 1168 desc->dt_or_obsolete.scsi_2.dt_scsi_addr; 1169 } 1170 1171 if (desc->dt_or_obsolete.scsi_2.dt_scsi_addr & 1172 READ_ELEMENT_STATUS_DT_LUVALID) { 1173 ces->ces_flags |= CES_LUN_VALID; 1174 ces->ces_scsi_lun = 1175 desc->dt_or_obsolete.scsi_2.dt_scsi_flags & 1176 READ_ELEMENT_STATUS_DT_LUNMASK; 1177 } 1178 } 1179 } 1180 1181 static int 1182 chgetelemstatus(struct cam_periph *periph, int scsi_version, u_long cmd, 1183 struct changer_element_status_request *cesr) 1184 { 1185 struct read_element_status_header *st_hdr; 1186 struct read_element_status_page_header *pg_hdr; 1187 struct read_element_status_descriptor *desc; 1188 caddr_t data = NULL; 1189 size_t size, desclen; 1190 u_int avail, i; 1191 int curdata, dvcid, sense_flags; 1192 int try_no_dvcid = 0; 1193 struct changer_element_status *user_data = NULL; 1194 struct ch_softc *softc; 1195 union ccb *ccb; 1196 int chet = cesr->cesr_element_type; 1197 int error = 0; 1198 int want_voltags = (cesr->cesr_flags & CESR_VOLTAGS) ? 1 : 0; 1199 1200 softc = (struct ch_softc *)periph->softc; 1201 1202 /* perform argument checking */ 1203 1204 /* 1205 * Perform a range check on the cesr_element_{base,count} 1206 * request argument fields. 1207 */ 1208 if ((softc->sc_counts[chet] - cesr->cesr_element_base) <= 0 1209 || (cesr->cesr_element_base + cesr->cesr_element_count) 1210 > softc->sc_counts[chet]) 1211 return (EINVAL); 1212 1213 /* 1214 * Request one descriptor for the given element type. This 1215 * is used to determine the size of the descriptor so that 1216 * we can allocate enough storage for all of them. We assume 1217 * that the first one can fit into 1k. 1218 */ 1219 cam_periph_unlock(periph); 1220 data = (caddr_t)malloc(1024, M_DEVBUF, M_WAITOK); 1221 1222 cam_periph_lock(periph); 1223 ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL); 1224 1225 sense_flags = SF_RETRY_UA; 1226 if (softc->quirks & CH_Q_NO_DVCID) { 1227 dvcid = 0; 1228 curdata = 0; 1229 } else { 1230 dvcid = 1; 1231 curdata = 1; 1232 /* 1233 * Don't print anything for an Illegal Request, because 1234 * these flags can cause some changers to complain. We'll 1235 * retry without them if we get an error. 1236 */ 1237 sense_flags |= SF_QUIET_IR; 1238 } 1239 1240 retry_einval: 1241 1242 scsi_read_element_status(&ccb->csio, 1243 /* retries */ 1, 1244 /* cbfcnp */ chdone, 1245 /* tag_action */ MSG_SIMPLE_Q_TAG, 1246 /* voltag */ want_voltags, 1247 /* sea */ softc->sc_firsts[chet], 1248 /* curdata */ curdata, 1249 /* dvcid */ dvcid, 1250 /* count */ 1, 1251 /* data_ptr */ data, 1252 /* dxfer_len */ 1024, 1253 /* sense_len */ SSD_FULL_SIZE, 1254 /* timeout */ CH_TIMEOUT_READ_ELEMENT_STATUS); 1255 1256 error = cam_periph_runccb(ccb, cherror, /*cam_flags*/ CAM_RETRY_SELTO, 1257 /*sense_flags*/ sense_flags, 1258 softc->device_stats); 1259 1260 /* 1261 * An Illegal Request sense key (only used if there is no asc/ascq) 1262 * or 0x24,0x00 for an ASC/ASCQ both map to EINVAL. If dvcid or 1263 * curdata are set (we set both or neither), try turning them off 1264 * and see if the command is successful. 1265 */ 1266 if ((error == EINVAL) 1267 && (dvcid || curdata)) { 1268 dvcid = 0; 1269 curdata = 0; 1270 error = 0; 1271 /* At this point we want to report any Illegal Request */ 1272 sense_flags &= ~SF_QUIET_IR; 1273 try_no_dvcid = 1; 1274 goto retry_einval; 1275 } 1276 1277 /* 1278 * In this case, we tried a read element status with dvcid and 1279 * curdata set, and it failed. We retried without those bits, and 1280 * it succeeded. Suggest to the user that he set a quirk, so we 1281 * don't go through the retry process the first time in the future. 1282 * This should only happen on changers that claim SCSI-3 or higher, 1283 * but don't support these bits. 1284 */ 1285 if ((try_no_dvcid != 0) 1286 && (error == 0)) 1287 softc->quirks |= CH_Q_NO_DVCID; 1288 1289 if (error) 1290 goto done; 1291 cam_periph_unlock(periph); 1292 1293 st_hdr = (struct read_element_status_header *)data; 1294 pg_hdr = (struct read_element_status_page_header *)((uintptr_t)st_hdr + 1295 sizeof(struct read_element_status_header)); 1296 desclen = scsi_2btoul(pg_hdr->edl); 1297 1298 size = sizeof(struct read_element_status_header) + 1299 sizeof(struct read_element_status_page_header) + 1300 (desclen * cesr->cesr_element_count); 1301 /* 1302 * Reallocate storage for descriptors and get them from the 1303 * device. 1304 */ 1305 free(data, M_DEVBUF); 1306 data = (caddr_t)malloc(size, M_DEVBUF, M_WAITOK); 1307 1308 cam_periph_lock(periph); 1309 scsi_read_element_status(&ccb->csio, 1310 /* retries */ 1, 1311 /* cbfcnp */ chdone, 1312 /* tag_action */ MSG_SIMPLE_Q_TAG, 1313 /* voltag */ want_voltags, 1314 /* sea */ softc->sc_firsts[chet] 1315 + cesr->cesr_element_base, 1316 /* curdata */ curdata, 1317 /* dvcid */ dvcid, 1318 /* count */ cesr->cesr_element_count, 1319 /* data_ptr */ data, 1320 /* dxfer_len */ size, 1321 /* sense_len */ SSD_FULL_SIZE, 1322 /* timeout */ CH_TIMEOUT_READ_ELEMENT_STATUS); 1323 1324 error = cam_periph_runccb(ccb, cherror, /*cam_flags*/ CAM_RETRY_SELTO, 1325 /*sense_flags*/ SF_RETRY_UA, 1326 softc->device_stats); 1327 1328 if (error) 1329 goto done; 1330 cam_periph_unlock(periph); 1331 1332 /* 1333 * Fill in the user status array. 1334 */ 1335 st_hdr = (struct read_element_status_header *)data; 1336 pg_hdr = (struct read_element_status_page_header *)((uintptr_t)st_hdr + 1337 sizeof(struct read_element_status_header)); 1338 avail = scsi_2btoul(st_hdr->count); 1339 1340 if (avail != cesr->cesr_element_count) { 1341 xpt_print(periph->path, 1342 "warning, READ ELEMENT STATUS avail != count\n"); 1343 } 1344 1345 user_data = (struct changer_element_status *) 1346 malloc(avail * sizeof(struct changer_element_status), 1347 M_DEVBUF, M_WAITOK | M_ZERO); 1348 1349 desc = (struct read_element_status_descriptor *)((uintptr_t)data + 1350 sizeof(struct read_element_status_header) + 1351 sizeof(struct read_element_status_page_header)); 1352 /* 1353 * Set up the individual element status structures 1354 */ 1355 for (i = 0; i < avail; ++i) { 1356 struct changer_element_status *ces; 1357 1358 /* 1359 * In the changer_element_status structure, fields from 1360 * the beginning to the field of ces_scsi_lun are common 1361 * between SCSI-2 and SCSI-3, while all the rest are new 1362 * from SCSI-3. In order to maintain backward compatibility 1363 * of the chio command, the ces pointer, below, is computed 1364 * such that it lines up with the structure boundary 1365 * corresponding to the SCSI version. 1366 */ 1367 ces = cmd == OCHIOGSTATUS ? 1368 (struct changer_element_status *) 1369 ((unsigned char *)user_data + i * 1370 (offsetof(struct changer_element_status,ces_scsi_lun)+1)): 1371 &user_data[i]; 1372 1373 copy_element_status(softc, pg_hdr->flags, desc, 1374 ces, scsi_version); 1375 1376 desc = (struct read_element_status_descriptor *) 1377 ((unsigned char *)desc + desclen); 1378 } 1379 1380 /* Copy element status structures out to userspace. */ 1381 if (cmd == OCHIOGSTATUS) 1382 error = copyout(user_data, 1383 cesr->cesr_element_status, 1384 avail* (offsetof(struct changer_element_status, 1385 ces_scsi_lun) + 1)); 1386 else 1387 error = copyout(user_data, 1388 cesr->cesr_element_status, 1389 avail * sizeof(struct changer_element_status)); 1390 1391 cam_periph_lock(periph); 1392 1393 done: 1394 xpt_release_ccb(ccb); 1395 1396 if (data != NULL) 1397 free(data, M_DEVBUF); 1398 if (user_data != NULL) 1399 free(user_data, M_DEVBUF); 1400 1401 return (error); 1402 } 1403 1404 static int 1405 chielem(struct cam_periph *periph, 1406 unsigned int timeout) 1407 { 1408 union ccb *ccb; 1409 struct ch_softc *softc; 1410 int error; 1411 1412 if (!timeout) { 1413 timeout = CH_TIMEOUT_INITIALIZE_ELEMENT_STATUS; 1414 } else { 1415 timeout *= 1000; 1416 } 1417 1418 error = 0; 1419 softc = (struct ch_softc *)periph->softc; 1420 1421 ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL); 1422 1423 scsi_initialize_element_status(&ccb->csio, 1424 /* retries */ 1, 1425 /* cbfcnp */ chdone, 1426 /* tag_action */ MSG_SIMPLE_Q_TAG, 1427 /* sense_len */ SSD_FULL_SIZE, 1428 /* timeout */ timeout); 1429 1430 error = cam_periph_runccb(ccb, cherror, /*cam_flags*/ CAM_RETRY_SELTO, 1431 /*sense_flags*/ SF_RETRY_UA, 1432 softc->device_stats); 1433 1434 xpt_release_ccb(ccb); 1435 1436 return(error); 1437 } 1438 1439 static int 1440 chsetvoltag(struct cam_periph *periph, 1441 struct changer_set_voltag_request *csvr) 1442 { 1443 union ccb *ccb; 1444 struct ch_softc *softc; 1445 u_int16_t ea; 1446 u_int8_t sac; 1447 struct scsi_send_volume_tag_parameters ssvtp; 1448 int error; 1449 int i; 1450 1451 error = 0; 1452 softc = (struct ch_softc *)periph->softc; 1453 1454 bzero(&ssvtp, sizeof(ssvtp)); 1455 for (i=0; i<sizeof(ssvtp.vitf); i++) { 1456 ssvtp.vitf[i] = ' '; 1457 } 1458 1459 /* 1460 * Check arguments. 1461 */ 1462 if (csvr->csvr_type > CHET_DT) 1463 return EINVAL; 1464 if (csvr->csvr_addr > (softc->sc_counts[csvr->csvr_type] - 1)) 1465 return ENODEV; 1466 1467 ea = softc->sc_firsts[csvr->csvr_type] + csvr->csvr_addr; 1468 1469 if (csvr->csvr_flags & CSVR_ALTERNATE) { 1470 switch (csvr->csvr_flags & CSVR_MODE_MASK) { 1471 case CSVR_MODE_SET: 1472 sac = SEND_VOLUME_TAG_ASSERT_ALTERNATE; 1473 break; 1474 case CSVR_MODE_REPLACE: 1475 sac = SEND_VOLUME_TAG_REPLACE_ALTERNATE; 1476 break; 1477 case CSVR_MODE_CLEAR: 1478 sac = SEND_VOLUME_TAG_UNDEFINED_ALTERNATE; 1479 break; 1480 default: 1481 error = EINVAL; 1482 goto out; 1483 } 1484 } else { 1485 switch (csvr->csvr_flags & CSVR_MODE_MASK) { 1486 case CSVR_MODE_SET: 1487 sac = SEND_VOLUME_TAG_ASSERT_PRIMARY; 1488 break; 1489 case CSVR_MODE_REPLACE: 1490 sac = SEND_VOLUME_TAG_REPLACE_PRIMARY; 1491 break; 1492 case CSVR_MODE_CLEAR: 1493 sac = SEND_VOLUME_TAG_UNDEFINED_PRIMARY; 1494 break; 1495 default: 1496 error = EINVAL; 1497 goto out; 1498 } 1499 } 1500 1501 memcpy(ssvtp.vitf, csvr->csvr_voltag.cv_volid, 1502 min(strlen(csvr->csvr_voltag.cv_volid), sizeof(ssvtp.vitf))); 1503 scsi_ulto2b(csvr->csvr_voltag.cv_serial, ssvtp.minvsn); 1504 1505 ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL); 1506 1507 scsi_send_volume_tag(&ccb->csio, 1508 /* retries */ 1, 1509 /* cbfcnp */ chdone, 1510 /* tag_action */ MSG_SIMPLE_Q_TAG, 1511 /* element_address */ ea, 1512 /* send_action_code */ sac, 1513 /* parameters */ &ssvtp, 1514 /* sense_len */ SSD_FULL_SIZE, 1515 /* timeout */ CH_TIMEOUT_SEND_VOLTAG); 1516 1517 error = cam_periph_runccb(ccb, cherror, /*cam_flags*/ CAM_RETRY_SELTO, 1518 /*sense_flags*/ SF_RETRY_UA, 1519 softc->device_stats); 1520 1521 xpt_release_ccb(ccb); 1522 1523 out: 1524 return error; 1525 } 1526 1527 static int 1528 chgetparams(struct cam_periph *periph) 1529 { 1530 union ccb *ccb; 1531 struct ch_softc *softc; 1532 void *mode_buffer; 1533 int mode_buffer_len; 1534 struct page_element_address_assignment *ea; 1535 struct page_device_capabilities *cap; 1536 int error, from, dbd; 1537 u_int8_t *moves, *exchanges; 1538 1539 error = 0; 1540 1541 softc = (struct ch_softc *)periph->softc; 1542 1543 ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL); 1544 1545 /* 1546 * The scsi_mode_sense_data structure is just a convenience 1547 * structure that allows us to easily calculate the worst-case 1548 * storage size of the mode sense buffer. 1549 */ 1550 mode_buffer_len = sizeof(struct scsi_mode_sense_data); 1551 1552 mode_buffer = malloc(mode_buffer_len, M_SCSICH, M_NOWAIT); 1553 1554 if (mode_buffer == NULL) { 1555 printf("chgetparams: couldn't malloc mode sense data\n"); 1556 xpt_release_ccb(ccb); 1557 return(ENOSPC); 1558 } 1559 1560 bzero(mode_buffer, mode_buffer_len); 1561 1562 if (softc->quirks & CH_Q_NO_DBD) 1563 dbd = FALSE; 1564 else 1565 dbd = TRUE; 1566 1567 /* 1568 * Get the element address assignment page. 1569 */ 1570 scsi_mode_sense(&ccb->csio, 1571 /* retries */ 1, 1572 /* cbfcnp */ chdone, 1573 /* tag_action */ MSG_SIMPLE_Q_TAG, 1574 /* dbd */ dbd, 1575 /* pc */ SMS_PAGE_CTRL_CURRENT, 1576 /* page */ CH_ELEMENT_ADDR_ASSIGN_PAGE, 1577 /* param_buf */ (u_int8_t *)mode_buffer, 1578 /* param_len */ mode_buffer_len, 1579 /* sense_len */ SSD_FULL_SIZE, 1580 /* timeout */ CH_TIMEOUT_MODE_SENSE); 1581 1582 error = cam_periph_runccb(ccb, cherror, /*cam_flags*/ CAM_RETRY_SELTO, 1583 /* sense_flags */ SF_RETRY_UA|SF_NO_PRINT, 1584 softc->device_stats); 1585 1586 if (error) { 1587 if (dbd) { 1588 struct scsi_mode_sense_6 *sms; 1589 1590 sms = (struct scsi_mode_sense_6 *) 1591 ccb->csio.cdb_io.cdb_bytes; 1592 1593 sms->byte2 &= ~SMS_DBD; 1594 error = cam_periph_runccb(ccb, cherror, 1595 /*cam_flags*/ CAM_RETRY_SELTO, 1596 /*sense_flags*/ SF_RETRY_UA, 1597 softc->device_stats); 1598 } else { 1599 /* 1600 * Since we disabled sense printing above, print 1601 * out the sense here since we got an error. 1602 */ 1603 scsi_sense_print(&ccb->csio); 1604 } 1605 1606 if (error) { 1607 xpt_print(periph->path, 1608 "chgetparams: error getting element " 1609 "address page\n"); 1610 xpt_release_ccb(ccb); 1611 free(mode_buffer, M_SCSICH); 1612 return(error); 1613 } 1614 } 1615 1616 ea = (struct page_element_address_assignment *) 1617 find_mode_page_6((struct scsi_mode_header_6 *)mode_buffer); 1618 1619 softc->sc_firsts[CHET_MT] = scsi_2btoul(ea->mtea); 1620 softc->sc_counts[CHET_MT] = scsi_2btoul(ea->nmte); 1621 softc->sc_firsts[CHET_ST] = scsi_2btoul(ea->fsea); 1622 softc->sc_counts[CHET_ST] = scsi_2btoul(ea->nse); 1623 softc->sc_firsts[CHET_IE] = scsi_2btoul(ea->fieea); 1624 softc->sc_counts[CHET_IE] = scsi_2btoul(ea->niee); 1625 softc->sc_firsts[CHET_DT] = scsi_2btoul(ea->fdtea); 1626 softc->sc_counts[CHET_DT] = scsi_2btoul(ea->ndte); 1627 1628 bzero(mode_buffer, mode_buffer_len); 1629 1630 /* 1631 * Now get the device capabilities page. 1632 */ 1633 scsi_mode_sense(&ccb->csio, 1634 /* retries */ 1, 1635 /* cbfcnp */ chdone, 1636 /* tag_action */ MSG_SIMPLE_Q_TAG, 1637 /* dbd */ dbd, 1638 /* pc */ SMS_PAGE_CTRL_CURRENT, 1639 /* page */ CH_DEVICE_CAP_PAGE, 1640 /* param_buf */ (u_int8_t *)mode_buffer, 1641 /* param_len */ mode_buffer_len, 1642 /* sense_len */ SSD_FULL_SIZE, 1643 /* timeout */ CH_TIMEOUT_MODE_SENSE); 1644 1645 error = cam_periph_runccb(ccb, cherror, /*cam_flags*/ CAM_RETRY_SELTO, 1646 /* sense_flags */ SF_RETRY_UA | SF_NO_PRINT, 1647 softc->device_stats); 1648 1649 if (error) { 1650 if (dbd) { 1651 struct scsi_mode_sense_6 *sms; 1652 1653 sms = (struct scsi_mode_sense_6 *) 1654 ccb->csio.cdb_io.cdb_bytes; 1655 1656 sms->byte2 &= ~SMS_DBD; 1657 error = cam_periph_runccb(ccb, cherror, 1658 /*cam_flags*/ CAM_RETRY_SELTO, 1659 /*sense_flags*/ SF_RETRY_UA, 1660 softc->device_stats); 1661 } else { 1662 /* 1663 * Since we disabled sense printing above, print 1664 * out the sense here since we got an error. 1665 */ 1666 scsi_sense_print(&ccb->csio); 1667 } 1668 1669 if (error) { 1670 xpt_print(periph->path, 1671 "chgetparams: error getting device " 1672 "capabilities page\n"); 1673 xpt_release_ccb(ccb); 1674 free(mode_buffer, M_SCSICH); 1675 return(error); 1676 } 1677 } 1678 1679 xpt_release_ccb(ccb); 1680 1681 cap = (struct page_device_capabilities *) 1682 find_mode_page_6((struct scsi_mode_header_6 *)mode_buffer); 1683 1684 bzero(softc->sc_movemask, sizeof(softc->sc_movemask)); 1685 bzero(softc->sc_exchangemask, sizeof(softc->sc_exchangemask)); 1686 moves = cap->move_from; 1687 exchanges = cap->exchange_with; 1688 for (from = CHET_MT; from <= CHET_MAX; ++from) { 1689 softc->sc_movemask[from] = moves[from]; 1690 softc->sc_exchangemask[from] = exchanges[from]; 1691 } 1692 1693 free(mode_buffer, M_SCSICH); 1694 1695 return(error); 1696 } 1697 1698 static int 1699 chscsiversion(struct cam_periph *periph) 1700 { 1701 struct scsi_inquiry_data *inq_data; 1702 struct ccb_getdev *cgd; 1703 int dev_scsi_version; 1704 1705 cam_periph_assert(periph, MA_OWNED); 1706 if ((cgd = (struct ccb_getdev *)xpt_alloc_ccb_nowait()) == NULL) 1707 return (-1); 1708 /* 1709 * Get the device information. 1710 */ 1711 xpt_setup_ccb(&cgd->ccb_h, 1712 periph->path, 1713 CAM_PRIORITY_NORMAL); 1714 cgd->ccb_h.func_code = XPT_GDEV_TYPE; 1715 xpt_action((union ccb *)cgd); 1716 1717 if (cgd->ccb_h.status != CAM_REQ_CMP) { 1718 xpt_free_ccb((union ccb *)cgd); 1719 return -1; 1720 } 1721 1722 inq_data = &cgd->inq_data; 1723 dev_scsi_version = inq_data->version; 1724 xpt_free_ccb((union ccb *)cgd); 1725 1726 return dev_scsi_version; 1727 } 1728 1729 void 1730 scsi_move_medium(struct ccb_scsiio *csio, u_int32_t retries, 1731 void (*cbfcnp)(struct cam_periph *, union ccb *), 1732 u_int8_t tag_action, u_int32_t tea, u_int32_t src, 1733 u_int32_t dst, int invert, u_int8_t sense_len, 1734 u_int32_t timeout) 1735 { 1736 struct scsi_move_medium *scsi_cmd; 1737 1738 scsi_cmd = (struct scsi_move_medium *)&csio->cdb_io.cdb_bytes; 1739 bzero(scsi_cmd, sizeof(*scsi_cmd)); 1740 1741 scsi_cmd->opcode = MOVE_MEDIUM; 1742 1743 scsi_ulto2b(tea, scsi_cmd->tea); 1744 scsi_ulto2b(src, scsi_cmd->src); 1745 scsi_ulto2b(dst, scsi_cmd->dst); 1746 1747 if (invert) 1748 scsi_cmd->invert |= MOVE_MEDIUM_INVERT; 1749 1750 cam_fill_csio(csio, 1751 retries, 1752 cbfcnp, 1753 /*flags*/ CAM_DIR_NONE, 1754 tag_action, 1755 /*data_ptr*/ NULL, 1756 /*dxfer_len*/ 0, 1757 sense_len, 1758 sizeof(*scsi_cmd), 1759 timeout); 1760 } 1761 1762 void 1763 scsi_exchange_medium(struct ccb_scsiio *csio, u_int32_t retries, 1764 void (*cbfcnp)(struct cam_periph *, union ccb *), 1765 u_int8_t tag_action, u_int32_t tea, u_int32_t src, 1766 u_int32_t dst1, u_int32_t dst2, int invert1, 1767 int invert2, u_int8_t sense_len, u_int32_t timeout) 1768 { 1769 struct scsi_exchange_medium *scsi_cmd; 1770 1771 scsi_cmd = (struct scsi_exchange_medium *)&csio->cdb_io.cdb_bytes; 1772 bzero(scsi_cmd, sizeof(*scsi_cmd)); 1773 1774 scsi_cmd->opcode = EXCHANGE_MEDIUM; 1775 1776 scsi_ulto2b(tea, scsi_cmd->tea); 1777 scsi_ulto2b(src, scsi_cmd->src); 1778 scsi_ulto2b(dst1, scsi_cmd->fdst); 1779 scsi_ulto2b(dst2, scsi_cmd->sdst); 1780 1781 if (invert1) 1782 scsi_cmd->invert |= EXCHANGE_MEDIUM_INV1; 1783 1784 if (invert2) 1785 scsi_cmd->invert |= EXCHANGE_MEDIUM_INV2; 1786 1787 cam_fill_csio(csio, 1788 retries, 1789 cbfcnp, 1790 /*flags*/ CAM_DIR_NONE, 1791 tag_action, 1792 /*data_ptr*/ NULL, 1793 /*dxfer_len*/ 0, 1794 sense_len, 1795 sizeof(*scsi_cmd), 1796 timeout); 1797 } 1798 1799 void 1800 scsi_position_to_element(struct ccb_scsiio *csio, u_int32_t retries, 1801 void (*cbfcnp)(struct cam_periph *, union ccb *), 1802 u_int8_t tag_action, u_int32_t tea, u_int32_t dst, 1803 int invert, u_int8_t sense_len, u_int32_t timeout) 1804 { 1805 struct scsi_position_to_element *scsi_cmd; 1806 1807 scsi_cmd = (struct scsi_position_to_element *)&csio->cdb_io.cdb_bytes; 1808 bzero(scsi_cmd, sizeof(*scsi_cmd)); 1809 1810 scsi_cmd->opcode = POSITION_TO_ELEMENT; 1811 1812 scsi_ulto2b(tea, scsi_cmd->tea); 1813 scsi_ulto2b(dst, scsi_cmd->dst); 1814 1815 if (invert) 1816 scsi_cmd->invert |= POSITION_TO_ELEMENT_INVERT; 1817 1818 cam_fill_csio(csio, 1819 retries, 1820 cbfcnp, 1821 /*flags*/ CAM_DIR_NONE, 1822 tag_action, 1823 /*data_ptr*/ NULL, 1824 /*dxfer_len*/ 0, 1825 sense_len, 1826 sizeof(*scsi_cmd), 1827 timeout); 1828 } 1829 1830 void 1831 scsi_read_element_status(struct ccb_scsiio *csio, u_int32_t retries, 1832 void (*cbfcnp)(struct cam_periph *, union ccb *), 1833 u_int8_t tag_action, int voltag, u_int32_t sea, 1834 int curdata, int dvcid, 1835 u_int32_t count, u_int8_t *data_ptr, 1836 u_int32_t dxfer_len, u_int8_t sense_len, 1837 u_int32_t timeout) 1838 { 1839 struct scsi_read_element_status *scsi_cmd; 1840 1841 scsi_cmd = (struct scsi_read_element_status *)&csio->cdb_io.cdb_bytes; 1842 bzero(scsi_cmd, sizeof(*scsi_cmd)); 1843 1844 scsi_cmd->opcode = READ_ELEMENT_STATUS; 1845 1846 scsi_ulto2b(sea, scsi_cmd->sea); 1847 scsi_ulto2b(count, scsi_cmd->count); 1848 scsi_ulto3b(dxfer_len, scsi_cmd->len); 1849 if (dvcid) 1850 scsi_cmd->flags |= READ_ELEMENT_STATUS_DVCID; 1851 if (curdata) 1852 scsi_cmd->flags |= READ_ELEMENT_STATUS_CURDATA; 1853 1854 if (voltag) 1855 scsi_cmd->byte2 |= READ_ELEMENT_STATUS_VOLTAG; 1856 1857 cam_fill_csio(csio, 1858 retries, 1859 cbfcnp, 1860 /*flags*/ CAM_DIR_IN, 1861 tag_action, 1862 data_ptr, 1863 dxfer_len, 1864 sense_len, 1865 sizeof(*scsi_cmd), 1866 timeout); 1867 } 1868 1869 void 1870 scsi_initialize_element_status(struct ccb_scsiio *csio, u_int32_t retries, 1871 void (*cbfcnp)(struct cam_periph *, union ccb *), 1872 u_int8_t tag_action, u_int8_t sense_len, 1873 u_int32_t timeout) 1874 { 1875 struct scsi_initialize_element_status *scsi_cmd; 1876 1877 scsi_cmd = (struct scsi_initialize_element_status *) 1878 &csio->cdb_io.cdb_bytes; 1879 bzero(scsi_cmd, sizeof(*scsi_cmd)); 1880 1881 scsi_cmd->opcode = INITIALIZE_ELEMENT_STATUS; 1882 1883 cam_fill_csio(csio, 1884 retries, 1885 cbfcnp, 1886 /*flags*/ CAM_DIR_NONE, 1887 tag_action, 1888 /* data_ptr */ NULL, 1889 /* dxfer_len */ 0, 1890 sense_len, 1891 sizeof(*scsi_cmd), 1892 timeout); 1893 } 1894 1895 void 1896 scsi_send_volume_tag(struct ccb_scsiio *csio, u_int32_t retries, 1897 void (*cbfcnp)(struct cam_periph *, union ccb *), 1898 u_int8_t tag_action, 1899 u_int16_t element_address, 1900 u_int8_t send_action_code, 1901 struct scsi_send_volume_tag_parameters *parameters, 1902 u_int8_t sense_len, u_int32_t timeout) 1903 { 1904 struct scsi_send_volume_tag *scsi_cmd; 1905 1906 scsi_cmd = (struct scsi_send_volume_tag *) &csio->cdb_io.cdb_bytes; 1907 bzero(scsi_cmd, sizeof(*scsi_cmd)); 1908 1909 scsi_cmd->opcode = SEND_VOLUME_TAG; 1910 scsi_ulto2b(element_address, scsi_cmd->ea); 1911 scsi_cmd->sac = send_action_code; 1912 scsi_ulto2b(sizeof(*parameters), scsi_cmd->pll); 1913 1914 cam_fill_csio(csio, 1915 retries, 1916 cbfcnp, 1917 /*flags*/ CAM_DIR_OUT, 1918 tag_action, 1919 /* data_ptr */ (u_int8_t *) parameters, 1920 sizeof(*parameters), 1921 sense_len, 1922 sizeof(*scsi_cmd), 1923 timeout); 1924 } 1925