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("$FreeBSD$"); 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 */ 100 101 static const u_int32_t CH_TIMEOUT_MODE_SENSE = 6000; 102 static const u_int32_t CH_TIMEOUT_MOVE_MEDIUM = 15 * 60 * 1000; 103 static const u_int32_t CH_TIMEOUT_EXCHANGE_MEDIUM = 15 * 60 * 1000; 104 static const u_int32_t CH_TIMEOUT_POSITION_TO_ELEMENT = 15 * 60 * 1000; 105 static const u_int32_t CH_TIMEOUT_READ_ELEMENT_STATUS = 5 * 60 * 1000; 106 static const u_int32_t CH_TIMEOUT_SEND_VOLTAG = 10000; 107 static const u_int32_t CH_TIMEOUT_INITIALIZE_ELEMENT_STATUS = 500000; 108 109 typedef enum { 110 CH_FLAG_INVALID = 0x001 111 } ch_flags; 112 113 typedef enum { 114 CH_STATE_PROBE, 115 CH_STATE_NORMAL 116 } ch_state; 117 118 typedef enum { 119 CH_CCB_PROBE 120 } ch_ccb_types; 121 122 typedef enum { 123 CH_Q_NONE = 0x00, 124 CH_Q_NO_DBD = 0x01, 125 CH_Q_NO_DVCID = 0x02 126 } ch_quirks; 127 128 #define CH_Q_BIT_STRING \ 129 "\020" \ 130 "\001NO_DBD" \ 131 "\002NO_DVCID" 132 133 #define ccb_state ppriv_field0 134 #define ccb_bp ppriv_ptr1 135 136 struct scsi_mode_sense_data { 137 struct scsi_mode_header_6 header; 138 struct scsi_mode_blk_desc blk_desc; 139 union { 140 struct page_element_address_assignment ea; 141 struct page_transport_geometry_parameters tg; 142 struct page_device_capabilities cap; 143 } pages; 144 }; 145 146 struct ch_softc { 147 ch_flags flags; 148 ch_state state; 149 ch_quirks quirks; 150 union ccb saved_ccb; 151 struct devstat *device_stats; 152 struct cdev *dev; 153 int open_count; 154 155 int sc_picker; /* current picker */ 156 157 /* 158 * The following information is obtained from the 159 * element address assignment page. 160 */ 161 int sc_firsts[CHET_MAX + 1]; /* firsts */ 162 int sc_counts[CHET_MAX + 1]; /* counts */ 163 164 /* 165 * The following mask defines the legal combinations 166 * of elements for the MOVE MEDIUM command. 167 */ 168 u_int8_t sc_movemask[CHET_MAX + 1]; 169 170 /* 171 * As above, but for EXCHANGE MEDIUM. 172 */ 173 u_int8_t sc_exchangemask[CHET_MAX + 1]; 174 175 /* 176 * Quirks; see below. XXX KDM not implemented yet 177 */ 178 int sc_settledelay; /* delay for settle */ 179 }; 180 181 static d_open_t chopen; 182 static d_close_t chclose; 183 static d_ioctl_t chioctl; 184 static periph_init_t chinit; 185 static periph_ctor_t chregister; 186 static periph_oninv_t choninvalidate; 187 static periph_dtor_t chcleanup; 188 static periph_start_t chstart; 189 static void chasync(void *callback_arg, u_int32_t code, 190 struct cam_path *path, void *arg); 191 static void chdone(struct cam_periph *periph, 192 union ccb *done_ccb); 193 static int cherror(union ccb *ccb, u_int32_t cam_flags, 194 u_int32_t sense_flags); 195 static int chmove(struct cam_periph *periph, 196 struct changer_move *cm); 197 static int chexchange(struct cam_periph *periph, 198 struct changer_exchange *ce); 199 static int chposition(struct cam_periph *periph, 200 struct changer_position *cp); 201 static int chgetelemstatus(struct cam_periph *periph, 202 int scsi_version, u_long cmd, 203 struct changer_element_status_request *csr); 204 static int chsetvoltag(struct cam_periph *periph, 205 struct changer_set_voltag_request *csvr); 206 static int chielem(struct cam_periph *periph, 207 unsigned int timeout); 208 static int chgetparams(struct cam_periph *periph); 209 static int chscsiversion(struct cam_periph *periph); 210 211 static struct periph_driver chdriver = 212 { 213 chinit, "ch", 214 TAILQ_HEAD_INITIALIZER(chdriver.units), /* generation */ 0 215 }; 216 217 PERIPHDRIVER_DECLARE(ch, chdriver); 218 219 static struct cdevsw ch_cdevsw = { 220 .d_version = D_VERSION, 221 .d_flags = D_TRACKCLOSE, 222 .d_open = chopen, 223 .d_close = chclose, 224 .d_ioctl = chioctl, 225 .d_name = "ch", 226 }; 227 228 static MALLOC_DEFINE(M_SCSICH, "scsi_ch", "scsi_ch buffers"); 229 230 static void 231 chinit(void) 232 { 233 cam_status status; 234 235 /* 236 * Install a global async callback. This callback will 237 * receive async callbacks like "new device found". 238 */ 239 status = xpt_register_async(AC_FOUND_DEVICE, chasync, NULL, NULL); 240 241 if (status != CAM_REQ_CMP) { 242 printf("ch: Failed to attach master async callback " 243 "due to status 0x%x!\n", status); 244 } 245 } 246 247 static void 248 chdevgonecb(void *arg) 249 { 250 struct ch_softc *softc; 251 struct cam_periph *periph; 252 struct mtx *mtx; 253 int i; 254 255 periph = (struct cam_periph *)arg; 256 mtx = cam_periph_mtx(periph); 257 mtx_lock(mtx); 258 259 softc = (struct ch_softc *)periph->softc; 260 KASSERT(softc->open_count >= 0, ("Negative open count %d", 261 softc->open_count)); 262 263 /* 264 * When we get this callback, we will get no more close calls from 265 * devfs. So if we have any dangling opens, we need to release the 266 * reference held for that particular context. 267 */ 268 for (i = 0; i < softc->open_count; i++) 269 cam_periph_release_locked(periph); 270 271 softc->open_count = 0; 272 273 /* 274 * Release the reference held for the device node, it is gone now. 275 */ 276 cam_periph_release_locked(periph); 277 278 /* 279 * We reference the lock directly here, instead of using 280 * cam_periph_unlock(). The reason is that the final call to 281 * cam_periph_release_locked() above could result in the periph 282 * getting freed. If that is the case, dereferencing the periph 283 * with a cam_periph_unlock() call would cause a page fault. 284 */ 285 mtx_unlock(mtx); 286 } 287 288 static void 289 choninvalidate(struct cam_periph *periph) 290 { 291 struct ch_softc *softc; 292 293 softc = (struct ch_softc *)periph->softc; 294 295 /* 296 * De-register any async callbacks. 297 */ 298 xpt_register_async(0, chasync, periph, periph->path); 299 300 softc->flags |= CH_FLAG_INVALID; 301 302 /* 303 * Tell devfs this device has gone away, and ask for a callback 304 * when it has cleaned up its state. 305 */ 306 destroy_dev_sched_cb(softc->dev, chdevgonecb, periph); 307 } 308 309 static void 310 chcleanup(struct cam_periph *periph) 311 { 312 struct ch_softc *softc; 313 314 softc = (struct ch_softc *)periph->softc; 315 316 devstat_remove_entry(softc->device_stats); 317 318 free(softc, M_DEVBUF); 319 } 320 321 static void 322 chasync(void *callback_arg, u_int32_t code, struct cam_path *path, void *arg) 323 { 324 struct cam_periph *periph; 325 326 periph = (struct cam_periph *)callback_arg; 327 328 switch(code) { 329 case AC_FOUND_DEVICE: 330 { 331 struct ccb_getdev *cgd; 332 cam_status status; 333 334 cgd = (struct ccb_getdev *)arg; 335 if (cgd == NULL) 336 break; 337 338 if (cgd->protocol != PROTO_SCSI) 339 break; 340 if (SID_QUAL(&cgd->inq_data) != SID_QUAL_LU_CONNECTED) 341 break; 342 if (SID_TYPE(&cgd->inq_data)!= T_CHANGER) 343 break; 344 345 /* 346 * Allocate a peripheral instance for 347 * this device and start the probe 348 * process. 349 */ 350 status = cam_periph_alloc(chregister, choninvalidate, 351 chcleanup, chstart, "ch", 352 CAM_PERIPH_BIO, path, 353 chasync, AC_FOUND_DEVICE, cgd); 354 355 if (status != CAM_REQ_CMP 356 && status != CAM_REQ_INPROG) 357 printf("chasync: Unable to probe new device " 358 "due to status 0x%x\n", status); 359 360 break; 361 362 } 363 default: 364 cam_periph_async(periph, code, path, arg); 365 break; 366 } 367 } 368 369 static cam_status 370 chregister(struct cam_periph *periph, void *arg) 371 { 372 struct ch_softc *softc; 373 struct ccb_getdev *cgd; 374 struct ccb_pathinq cpi; 375 struct make_dev_args args; 376 int error; 377 378 cgd = (struct ccb_getdev *)arg; 379 if (cgd == NULL) { 380 printf("chregister: no getdev CCB, can't register device\n"); 381 return(CAM_REQ_CMP_ERR); 382 } 383 384 softc = (struct ch_softc *)malloc(sizeof(*softc),M_DEVBUF,M_NOWAIT); 385 386 if (softc == NULL) { 387 printf("chregister: Unable to probe new device. " 388 "Unable to allocate softc\n"); 389 return(CAM_REQ_CMP_ERR); 390 } 391 392 bzero(softc, sizeof(*softc)); 393 softc->state = CH_STATE_PROBE; 394 periph->softc = softc; 395 softc->quirks = CH_Q_NONE; 396 397 /* 398 * The DVCID and CURDATA bits were not introduced until the SMC 399 * spec. If this device claims SCSI-2 or earlier support, then it 400 * very likely does not support these bits. 401 */ 402 if (cgd->inq_data.version <= SCSI_REV_2) 403 softc->quirks |= CH_Q_NO_DVCID; 404 405 bzero(&cpi, sizeof(cpi)); 406 xpt_setup_ccb(&cpi.ccb_h, periph->path, CAM_PRIORITY_NORMAL); 407 cpi.ccb_h.func_code = XPT_PATH_INQ; 408 xpt_action((union ccb *)&cpi); 409 410 /* 411 * Changers don't have a blocksize, and obviously don't support 412 * tagged queueing. 413 */ 414 cam_periph_unlock(periph); 415 softc->device_stats = devstat_new_entry("ch", 416 periph->unit_number, 0, 417 DEVSTAT_NO_BLOCKSIZE | DEVSTAT_NO_ORDERED_TAGS, 418 SID_TYPE(&cgd->inq_data) | 419 XPORT_DEVSTAT_TYPE(cpi.transport), 420 DEVSTAT_PRIORITY_OTHER); 421 422 /* 423 * Acquire a reference to the periph before we create the devfs 424 * instance for it. We'll release this reference once the devfs 425 * instance has been freed. 426 */ 427 if (cam_periph_acquire(periph) != CAM_REQ_CMP) { 428 xpt_print(periph->path, "%s: lost periph during " 429 "registration!\n", __func__); 430 cam_periph_lock(periph); 431 return (CAM_REQ_CMP_ERR); 432 } 433 434 435 /* Register the device */ 436 make_dev_args_init(&args); 437 args.mda_devsw = &ch_cdevsw; 438 args.mda_unit = periph->unit_number; 439 args.mda_uid = UID_ROOT; 440 args.mda_gid = GID_OPERATOR; 441 args.mda_mode = 0600; 442 args.mda_si_drv1 = periph; 443 error = make_dev_s(&args, &softc->dev, "%s%d", periph->periph_name, 444 periph->unit_number); 445 cam_periph_lock(periph); 446 if (error != 0) { 447 cam_periph_release_locked(periph); 448 return (CAM_REQ_CMP_ERR); 449 } 450 451 /* 452 * Add an async callback so that we get 453 * notified if this device goes away. 454 */ 455 xpt_register_async(AC_LOST_DEVICE, chasync, periph, periph->path); 456 457 /* 458 * Lock this periph until we are setup. 459 * This first call can't block 460 */ 461 (void)cam_periph_hold(periph, PRIBIO); 462 xpt_schedule(periph, CAM_PRIORITY_DEV); 463 464 return(CAM_REQ_CMP); 465 } 466 467 static int 468 chopen(struct cdev *dev, int flags, int fmt, struct thread *td) 469 { 470 struct cam_periph *periph; 471 struct ch_softc *softc; 472 int error; 473 474 periph = (struct cam_periph *)dev->si_drv1; 475 if (cam_periph_acquire(periph) != CAM_REQ_CMP) 476 return (ENXIO); 477 478 softc = (struct ch_softc *)periph->softc; 479 480 cam_periph_lock(periph); 481 482 if (softc->flags & CH_FLAG_INVALID) { 483 cam_periph_release_locked(periph); 484 cam_periph_unlock(periph); 485 return(ENXIO); 486 } 487 488 if ((error = cam_periph_hold(periph, PRIBIO | PCATCH)) != 0) { 489 cam_periph_unlock(periph); 490 cam_periph_release(periph); 491 return (error); 492 } 493 494 /* 495 * Load information about this changer device into the softc. 496 */ 497 if ((error = chgetparams(periph)) != 0) { 498 cam_periph_unhold(periph); 499 cam_periph_release_locked(periph); 500 cam_periph_unlock(periph); 501 return(error); 502 } 503 504 cam_periph_unhold(periph); 505 506 softc->open_count++; 507 508 cam_periph_unlock(periph); 509 510 return(error); 511 } 512 513 static int 514 chclose(struct cdev *dev, int flag, int fmt, struct thread *td) 515 { 516 struct cam_periph *periph; 517 struct ch_softc *softc; 518 struct mtx *mtx; 519 520 periph = (struct cam_periph *)dev->si_drv1; 521 mtx = cam_periph_mtx(periph); 522 mtx_lock(mtx); 523 524 softc = (struct ch_softc *)periph->softc; 525 softc->open_count--; 526 527 cam_periph_release_locked(periph); 528 529 /* 530 * We reference the lock directly here, instead of using 531 * cam_periph_unlock(). The reason is that the call to 532 * cam_periph_release_locked() above could result in the periph 533 * getting freed. If that is the case, dereferencing the periph 534 * with a cam_periph_unlock() call would cause a page fault. 535 * 536 * cam_periph_release() avoids this problem using the same method, 537 * but we're manually acquiring and dropping the lock here to 538 * protect the open count and avoid another lock acquisition and 539 * release. 540 */ 541 mtx_unlock(mtx); 542 543 return(0); 544 } 545 546 static void 547 chstart(struct cam_periph *periph, union ccb *start_ccb) 548 { 549 struct ch_softc *softc; 550 551 softc = (struct ch_softc *)periph->softc; 552 553 switch (softc->state) { 554 case CH_STATE_NORMAL: 555 { 556 xpt_release_ccb(start_ccb); 557 break; 558 } 559 case CH_STATE_PROBE: 560 { 561 int mode_buffer_len; 562 void *mode_buffer; 563 564 /* 565 * Include the block descriptor when calculating the mode 566 * buffer length, 567 */ 568 mode_buffer_len = sizeof(struct scsi_mode_header_6) + 569 sizeof(struct scsi_mode_blk_desc) + 570 sizeof(struct page_element_address_assignment); 571 572 mode_buffer = malloc(mode_buffer_len, M_SCSICH, M_NOWAIT); 573 574 if (mode_buffer == NULL) { 575 printf("chstart: couldn't malloc mode sense data\n"); 576 break; 577 } 578 bzero(mode_buffer, mode_buffer_len); 579 580 /* 581 * Get the element address assignment page. 582 */ 583 scsi_mode_sense(&start_ccb->csio, 584 /* retries */ 1, 585 /* cbfcnp */ chdone, 586 /* tag_action */ MSG_SIMPLE_Q_TAG, 587 /* dbd */ (softc->quirks & CH_Q_NO_DBD) ? 588 FALSE : TRUE, 589 /* page_code */ SMS_PAGE_CTRL_CURRENT, 590 /* page */ CH_ELEMENT_ADDR_ASSIGN_PAGE, 591 /* param_buf */ (u_int8_t *)mode_buffer, 592 /* param_len */ mode_buffer_len, 593 /* sense_len */ SSD_FULL_SIZE, 594 /* timeout */ CH_TIMEOUT_MODE_SENSE); 595 596 start_ccb->ccb_h.ccb_bp = NULL; 597 start_ccb->ccb_h.ccb_state = CH_CCB_PROBE; 598 xpt_action(start_ccb); 599 break; 600 } 601 } 602 } 603 604 static void 605 chdone(struct cam_periph *periph, union ccb *done_ccb) 606 { 607 struct ch_softc *softc; 608 struct ccb_scsiio *csio; 609 610 softc = (struct ch_softc *)periph->softc; 611 csio = &done_ccb->csio; 612 613 switch(done_ccb->ccb_h.ccb_state) { 614 case CH_CCB_PROBE: 615 { 616 struct scsi_mode_header_6 *mode_header; 617 struct page_element_address_assignment *ea; 618 char announce_buf[80]; 619 620 621 mode_header = (struct scsi_mode_header_6 *)csio->data_ptr; 622 623 ea = (struct page_element_address_assignment *) 624 find_mode_page_6(mode_header); 625 626 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP){ 627 628 softc->sc_firsts[CHET_MT] = scsi_2btoul(ea->mtea); 629 softc->sc_counts[CHET_MT] = scsi_2btoul(ea->nmte); 630 softc->sc_firsts[CHET_ST] = scsi_2btoul(ea->fsea); 631 softc->sc_counts[CHET_ST] = scsi_2btoul(ea->nse); 632 softc->sc_firsts[CHET_IE] = scsi_2btoul(ea->fieea); 633 softc->sc_counts[CHET_IE] = scsi_2btoul(ea->niee); 634 softc->sc_firsts[CHET_DT] = scsi_2btoul(ea->fdtea); 635 softc->sc_counts[CHET_DT] = scsi_2btoul(ea->ndte); 636 softc->sc_picker = softc->sc_firsts[CHET_MT]; 637 638 #define PLURAL(c) (c) == 1 ? "" : "s" 639 snprintf(announce_buf, sizeof(announce_buf), 640 "%d slot%s, %d drive%s, " 641 "%d picker%s, %d portal%s", 642 softc->sc_counts[CHET_ST], 643 PLURAL(softc->sc_counts[CHET_ST]), 644 softc->sc_counts[CHET_DT], 645 PLURAL(softc->sc_counts[CHET_DT]), 646 softc->sc_counts[CHET_MT], 647 PLURAL(softc->sc_counts[CHET_MT]), 648 softc->sc_counts[CHET_IE], 649 PLURAL(softc->sc_counts[CHET_IE])); 650 #undef PLURAL 651 } else { 652 int error; 653 654 error = cherror(done_ccb, CAM_RETRY_SELTO, 655 SF_RETRY_UA | SF_NO_PRINT); 656 /* 657 * Retry any UNIT ATTENTION type errors. They 658 * are expected at boot. 659 */ 660 if (error == ERESTART) { 661 /* 662 * A retry was scheuled, so 663 * just return. 664 */ 665 return; 666 } else if (error != 0) { 667 struct scsi_mode_sense_6 *sms; 668 int frozen, retry_scheduled; 669 670 sms = (struct scsi_mode_sense_6 *) 671 done_ccb->csio.cdb_io.cdb_bytes; 672 frozen = (done_ccb->ccb_h.status & 673 CAM_DEV_QFRZN) != 0; 674 675 /* 676 * Check to see if block descriptors were 677 * disabled. Some devices don't like that. 678 * We're taking advantage of the fact that 679 * the first few bytes of the 6 and 10 byte 680 * mode sense commands are the same. If 681 * block descriptors were disabled, enable 682 * them and re-send the command. 683 */ 684 if ((sms->byte2 & SMS_DBD) != 0 && 685 (periph->flags & CAM_PERIPH_INVALID) == 0) { 686 sms->byte2 &= ~SMS_DBD; 687 xpt_action(done_ccb); 688 softc->quirks |= CH_Q_NO_DBD; 689 retry_scheduled = 1; 690 } else 691 retry_scheduled = 0; 692 693 /* Don't wedge this device's queue */ 694 if (frozen) 695 cam_release_devq(done_ccb->ccb_h.path, 696 /*relsim_flags*/0, 697 /*reduction*/0, 698 /*timeout*/0, 699 /*getcount_only*/0); 700 701 if (retry_scheduled) 702 return; 703 704 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) 705 == CAM_SCSI_STATUS_ERROR) 706 scsi_sense_print(&done_ccb->csio); 707 else { 708 xpt_print(periph->path, 709 "got CAM status %#x\n", 710 done_ccb->ccb_h.status); 711 } 712 xpt_print(periph->path, "fatal error, failed " 713 "to attach to device\n"); 714 715 cam_periph_invalidate(periph); 716 717 announce_buf[0] = '\0'; 718 } 719 } 720 if (announce_buf[0] != '\0') { 721 xpt_announce_periph(periph, announce_buf); 722 xpt_announce_quirks(periph, softc->quirks, 723 CH_Q_BIT_STRING); 724 } 725 softc->state = CH_STATE_NORMAL; 726 free(mode_header, M_SCSICH); 727 /* 728 * Since our peripheral may be invalidated by an error 729 * above or an external event, we must release our CCB 730 * before releasing the probe lock on the peripheral. 731 * The peripheral will only go away once the last lock 732 * is removed, and we need it around for the CCB release 733 * operation. 734 */ 735 xpt_release_ccb(done_ccb); 736 cam_periph_unhold(periph); 737 return; 738 } 739 default: 740 break; 741 } 742 xpt_release_ccb(done_ccb); 743 } 744 745 static int 746 cherror(union ccb *ccb, u_int32_t cam_flags, u_int32_t sense_flags) 747 { 748 struct ch_softc *softc; 749 struct cam_periph *periph; 750 751 periph = xpt_path_periph(ccb->ccb_h.path); 752 softc = (struct ch_softc *)periph->softc; 753 754 return (cam_periph_error(ccb, cam_flags, sense_flags, 755 &softc->saved_ccb)); 756 } 757 758 static int 759 chioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flag, struct thread *td) 760 { 761 struct cam_periph *periph; 762 struct ch_softc *softc; 763 int error; 764 765 periph = (struct cam_periph *)dev->si_drv1; 766 cam_periph_lock(periph); 767 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("entering chioctl\n")); 768 769 softc = (struct ch_softc *)periph->softc; 770 771 error = 0; 772 773 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, 774 ("trying to do ioctl %#lx\n", cmd)); 775 776 /* 777 * If this command can change the device's state, we must 778 * have the device open for writing. 779 */ 780 switch (cmd) { 781 case CHIOGPICKER: 782 case CHIOGPARAMS: 783 case OCHIOGSTATUS: 784 case CHIOGSTATUS: 785 break; 786 787 default: 788 if ((flag & FWRITE) == 0) { 789 cam_periph_unlock(periph); 790 return (EBADF); 791 } 792 } 793 794 switch (cmd) { 795 case CHIOMOVE: 796 error = chmove(periph, (struct changer_move *)addr); 797 break; 798 799 case CHIOEXCHANGE: 800 error = chexchange(periph, (struct changer_exchange *)addr); 801 break; 802 803 case CHIOPOSITION: 804 error = chposition(periph, (struct changer_position *)addr); 805 break; 806 807 case CHIOGPICKER: 808 *(int *)addr = softc->sc_picker - softc->sc_firsts[CHET_MT]; 809 break; 810 811 case CHIOSPICKER: 812 { 813 int new_picker = *(int *)addr; 814 815 if (new_picker > (softc->sc_counts[CHET_MT] - 1)) { 816 error = EINVAL; 817 break; 818 } 819 softc->sc_picker = softc->sc_firsts[CHET_MT] + new_picker; 820 break; 821 } 822 case CHIOGPARAMS: 823 { 824 struct changer_params *cp = (struct changer_params *)addr; 825 826 cp->cp_npickers = softc->sc_counts[CHET_MT]; 827 cp->cp_nslots = softc->sc_counts[CHET_ST]; 828 cp->cp_nportals = softc->sc_counts[CHET_IE]; 829 cp->cp_ndrives = softc->sc_counts[CHET_DT]; 830 break; 831 } 832 case CHIOIELEM: 833 error = chielem(periph, *(unsigned int *)addr); 834 break; 835 836 case OCHIOGSTATUS: 837 { 838 error = chgetelemstatus(periph, SCSI_REV_2, cmd, 839 (struct changer_element_status_request *)addr); 840 break; 841 } 842 843 case CHIOGSTATUS: 844 { 845 int scsi_version; 846 847 scsi_version = chscsiversion(periph); 848 if (scsi_version >= SCSI_REV_0) { 849 error = chgetelemstatus(periph, scsi_version, cmd, 850 (struct changer_element_status_request *)addr); 851 } 852 else { /* unable to determine the SCSI version */ 853 cam_periph_unlock(periph); 854 return (ENXIO); 855 } 856 break; 857 } 858 859 case CHIOSETVOLTAG: 860 { 861 error = chsetvoltag(periph, 862 (struct changer_set_voltag_request *) addr); 863 break; 864 } 865 866 /* Implement prevent/allow? */ 867 868 default: 869 error = cam_periph_ioctl(periph, cmd, addr, cherror); 870 break; 871 } 872 873 cam_periph_unlock(periph); 874 return (error); 875 } 876 877 static int 878 chmove(struct cam_periph *periph, struct changer_move *cm) 879 { 880 struct ch_softc *softc; 881 u_int16_t fromelem, toelem; 882 union ccb *ccb; 883 int error; 884 885 error = 0; 886 softc = (struct ch_softc *)periph->softc; 887 888 /* 889 * Check arguments. 890 */ 891 if ((cm->cm_fromtype > CHET_DT) || (cm->cm_totype > CHET_DT)) 892 return (EINVAL); 893 if ((cm->cm_fromunit > (softc->sc_counts[cm->cm_fromtype] - 1)) || 894 (cm->cm_tounit > (softc->sc_counts[cm->cm_totype] - 1))) 895 return (ENODEV); 896 897 /* 898 * Check the request against the changer's capabilities. 899 */ 900 if ((softc->sc_movemask[cm->cm_fromtype] & (1 << cm->cm_totype)) == 0) 901 return (ENODEV); 902 903 /* 904 * Calculate the source and destination elements. 905 */ 906 fromelem = softc->sc_firsts[cm->cm_fromtype] + cm->cm_fromunit; 907 toelem = softc->sc_firsts[cm->cm_totype] + cm->cm_tounit; 908 909 ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL); 910 911 scsi_move_medium(&ccb->csio, 912 /* retries */ 1, 913 /* cbfcnp */ chdone, 914 /* tag_action */ MSG_SIMPLE_Q_TAG, 915 /* tea */ softc->sc_picker, 916 /* src */ fromelem, 917 /* dst */ toelem, 918 /* invert */ (cm->cm_flags & CM_INVERT) ? TRUE : FALSE, 919 /* sense_len */ SSD_FULL_SIZE, 920 /* timeout */ CH_TIMEOUT_MOVE_MEDIUM); 921 922 error = cam_periph_runccb(ccb, cherror, /*cam_flags*/CAM_RETRY_SELTO, 923 /*sense_flags*/ SF_RETRY_UA, 924 softc->device_stats); 925 926 xpt_release_ccb(ccb); 927 928 return(error); 929 } 930 931 static int 932 chexchange(struct cam_periph *periph, struct changer_exchange *ce) 933 { 934 struct ch_softc *softc; 935 u_int16_t src, dst1, dst2; 936 union ccb *ccb; 937 int error; 938 939 error = 0; 940 softc = (struct ch_softc *)periph->softc; 941 /* 942 * Check arguments. 943 */ 944 if ((ce->ce_srctype > CHET_DT) || (ce->ce_fdsttype > CHET_DT) || 945 (ce->ce_sdsttype > CHET_DT)) 946 return (EINVAL); 947 if ((ce->ce_srcunit > (softc->sc_counts[ce->ce_srctype] - 1)) || 948 (ce->ce_fdstunit > (softc->sc_counts[ce->ce_fdsttype] - 1)) || 949 (ce->ce_sdstunit > (softc->sc_counts[ce->ce_sdsttype] - 1))) 950 return (ENODEV); 951 952 /* 953 * Check the request against the changer's capabilities. 954 */ 955 if (((softc->sc_exchangemask[ce->ce_srctype] & 956 (1 << ce->ce_fdsttype)) == 0) || 957 ((softc->sc_exchangemask[ce->ce_fdsttype] & 958 (1 << ce->ce_sdsttype)) == 0)) 959 return (ENODEV); 960 961 /* 962 * Calculate the source and destination elements. 963 */ 964 src = softc->sc_firsts[ce->ce_srctype] + ce->ce_srcunit; 965 dst1 = softc->sc_firsts[ce->ce_fdsttype] + ce->ce_fdstunit; 966 dst2 = softc->sc_firsts[ce->ce_sdsttype] + ce->ce_sdstunit; 967 968 ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL); 969 970 scsi_exchange_medium(&ccb->csio, 971 /* retries */ 1, 972 /* cbfcnp */ chdone, 973 /* tag_action */ MSG_SIMPLE_Q_TAG, 974 /* tea */ softc->sc_picker, 975 /* src */ src, 976 /* dst1 */ dst1, 977 /* dst2 */ dst2, 978 /* invert1 */ (ce->ce_flags & CE_INVERT1) ? 979 TRUE : FALSE, 980 /* invert2 */ (ce->ce_flags & CE_INVERT2) ? 981 TRUE : FALSE, 982 /* sense_len */ SSD_FULL_SIZE, 983 /* timeout */ CH_TIMEOUT_EXCHANGE_MEDIUM); 984 985 error = cam_periph_runccb(ccb, cherror, /*cam_flags*/CAM_RETRY_SELTO, 986 /*sense_flags*/ SF_RETRY_UA, 987 softc->device_stats); 988 989 xpt_release_ccb(ccb); 990 991 return(error); 992 } 993 994 static int 995 chposition(struct cam_periph *periph, struct changer_position *cp) 996 { 997 struct ch_softc *softc; 998 u_int16_t dst; 999 union ccb *ccb; 1000 int error; 1001 1002 error = 0; 1003 softc = (struct ch_softc *)periph->softc; 1004 1005 /* 1006 * Check arguments. 1007 */ 1008 if (cp->cp_type > CHET_DT) 1009 return (EINVAL); 1010 if (cp->cp_unit > (softc->sc_counts[cp->cp_type] - 1)) 1011 return (ENODEV); 1012 1013 /* 1014 * Calculate the destination element. 1015 */ 1016 dst = softc->sc_firsts[cp->cp_type] + cp->cp_unit; 1017 1018 ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL); 1019 1020 scsi_position_to_element(&ccb->csio, 1021 /* retries */ 1, 1022 /* cbfcnp */ chdone, 1023 /* tag_action */ MSG_SIMPLE_Q_TAG, 1024 /* tea */ softc->sc_picker, 1025 /* dst */ dst, 1026 /* invert */ (cp->cp_flags & CP_INVERT) ? 1027 TRUE : FALSE, 1028 /* sense_len */ SSD_FULL_SIZE, 1029 /* timeout */ CH_TIMEOUT_POSITION_TO_ELEMENT); 1030 1031 error = cam_periph_runccb(ccb, cherror, /*cam_flags*/ CAM_RETRY_SELTO, 1032 /*sense_flags*/ SF_RETRY_UA, 1033 softc->device_stats); 1034 1035 xpt_release_ccb(ccb); 1036 1037 return(error); 1038 } 1039 1040 /* 1041 * Copy a volume tag to a volume_tag struct, converting SCSI byte order 1042 * to host native byte order in the volume serial number. The volume 1043 * label as returned by the changer is transferred to user mode as 1044 * nul-terminated string. Volume labels are truncated at the first 1045 * space, as suggested by SCSI-2. 1046 */ 1047 static void 1048 copy_voltag(struct changer_voltag *uvoltag, struct volume_tag *voltag) 1049 { 1050 int i; 1051 for (i=0; i<CH_VOLTAG_MAXLEN; i++) { 1052 char c = voltag->vif[i]; 1053 if (c && c != ' ') 1054 uvoltag->cv_volid[i] = c; 1055 else 1056 break; 1057 } 1058 uvoltag->cv_serial = scsi_2btoul(voltag->vsn); 1059 } 1060 1061 /* 1062 * Copy an element status descriptor to a user-mode 1063 * changer_element_status structure. 1064 */ 1065 static void 1066 copy_element_status(struct ch_softc *softc, 1067 u_int16_t flags, 1068 struct read_element_status_descriptor *desc, 1069 struct changer_element_status *ces, 1070 int scsi_version) 1071 { 1072 u_int16_t eaddr = scsi_2btoul(desc->eaddr); 1073 u_int16_t et; 1074 struct volume_tag *pvol_tag = NULL, *avol_tag = NULL; 1075 struct read_element_status_device_id *devid = NULL; 1076 1077 ces->ces_int_addr = eaddr; 1078 /* set up logical address in element status */ 1079 for (et = CHET_MT; et <= CHET_DT; et++) { 1080 if ((softc->sc_firsts[et] <= eaddr) 1081 && ((softc->sc_firsts[et] + softc->sc_counts[et]) 1082 > eaddr)) { 1083 ces->ces_addr = eaddr - softc->sc_firsts[et]; 1084 ces->ces_type = et; 1085 break; 1086 } 1087 } 1088 1089 ces->ces_flags = desc->flags1; 1090 1091 ces->ces_sensecode = desc->sense_code; 1092 ces->ces_sensequal = desc->sense_qual; 1093 1094 if (desc->flags2 & READ_ELEMENT_STATUS_INVERT) 1095 ces->ces_flags |= CES_INVERT; 1096 1097 if (desc->flags2 & READ_ELEMENT_STATUS_SVALID) { 1098 1099 eaddr = scsi_2btoul(desc->ssea); 1100 1101 /* convert source address to logical format */ 1102 for (et = CHET_MT; et <= CHET_DT; et++) { 1103 if ((softc->sc_firsts[et] <= eaddr) 1104 && ((softc->sc_firsts[et] + softc->sc_counts[et]) 1105 > eaddr)) { 1106 ces->ces_source_addr = 1107 eaddr - softc->sc_firsts[et]; 1108 ces->ces_source_type = et; 1109 ces->ces_flags |= CES_SOURCE_VALID; 1110 break; 1111 } 1112 } 1113 1114 if (!(ces->ces_flags & CES_SOURCE_VALID)) 1115 printf("ch: warning: could not map element source " 1116 "address %ud to a valid element type\n", 1117 eaddr); 1118 } 1119 1120 /* 1121 * pvoltag and avoltag are common between SCSI-2 and later versions 1122 */ 1123 if (flags & READ_ELEMENT_STATUS_PVOLTAG) 1124 pvol_tag = &desc->voltag_devid.pvoltag; 1125 if (flags & READ_ELEMENT_STATUS_AVOLTAG) 1126 avol_tag = (flags & READ_ELEMENT_STATUS_PVOLTAG) ? 1127 &desc->voltag_devid.voltag[1] :&desc->voltag_devid.pvoltag; 1128 /* 1129 * For SCSI-3 and later, element status can carry designator and 1130 * other information. 1131 */ 1132 if (scsi_version >= SCSI_REV_SPC) { 1133 if ((flags & READ_ELEMENT_STATUS_PVOLTAG) ^ 1134 (flags & READ_ELEMENT_STATUS_AVOLTAG)) 1135 devid = &desc->voltag_devid.pvol_and_devid.devid; 1136 else if (!(flags & READ_ELEMENT_STATUS_PVOLTAG) && 1137 !(flags & READ_ELEMENT_STATUS_AVOLTAG)) 1138 devid = &desc->voltag_devid.devid; 1139 else /* Have both PVOLTAG and AVOLTAG */ 1140 devid = &desc->voltag_devid.vol_tags_and_devid.devid; 1141 } 1142 1143 if (pvol_tag) 1144 copy_voltag(&(ces->ces_pvoltag), pvol_tag); 1145 if (avol_tag) 1146 copy_voltag(&(ces->ces_pvoltag), avol_tag); 1147 if (devid != NULL) { 1148 if (devid->designator_length > 0) { 1149 bcopy((void *)devid->designator, 1150 (void *)ces->ces_designator, 1151 devid->designator_length); 1152 ces->ces_designator_length = devid->designator_length; 1153 /* 1154 * Make sure we are always NUL terminated. The 1155 * This won't matter for the binary code set, 1156 * since the user will only pay attention to the 1157 * length field. 1158 */ 1159 ces->ces_designator[devid->designator_length]= '\0'; 1160 } 1161 if (devid->piv_assoc_designator_type & 1162 READ_ELEMENT_STATUS_PIV_SET) { 1163 ces->ces_flags |= CES_PIV; 1164 ces->ces_protocol_id = 1165 READ_ELEMENT_STATUS_PROTOCOL_ID( 1166 devid->prot_code_set); 1167 } 1168 ces->ces_code_set = 1169 READ_ELEMENT_STATUS_CODE_SET(devid->prot_code_set); 1170 ces->ces_assoc = READ_ELEMENT_STATUS_ASSOCIATION( 1171 devid->piv_assoc_designator_type); 1172 ces->ces_designator_type = READ_ELEMENT_STATUS_DESIGNATOR_TYPE( 1173 devid->piv_assoc_designator_type); 1174 } else if (scsi_version > SCSI_REV_2) { 1175 /* SCSI-SPC and No devid, no designator */ 1176 ces->ces_designator_length = 0; 1177 ces->ces_designator[0] = '\0'; 1178 ces->ces_protocol_id = CES_PROTOCOL_ID_FCP_4; 1179 } 1180 1181 if (scsi_version <= SCSI_REV_2) { 1182 if (desc->dt_or_obsolete.scsi_2.dt_scsi_flags & 1183 READ_ELEMENT_STATUS_DT_IDVALID) { 1184 ces->ces_flags |= CES_SCSIID_VALID; 1185 ces->ces_scsi_id = 1186 desc->dt_or_obsolete.scsi_2.dt_scsi_addr; 1187 } 1188 1189 if (desc->dt_or_obsolete.scsi_2.dt_scsi_addr & 1190 READ_ELEMENT_STATUS_DT_LUVALID) { 1191 ces->ces_flags |= CES_LUN_VALID; 1192 ces->ces_scsi_lun = 1193 desc->dt_or_obsolete.scsi_2.dt_scsi_flags & 1194 READ_ELEMENT_STATUS_DT_LUNMASK; 1195 } 1196 } 1197 } 1198 1199 static int 1200 chgetelemstatus(struct cam_periph *periph, int scsi_version, u_long cmd, 1201 struct changer_element_status_request *cesr) 1202 { 1203 struct read_element_status_header *st_hdr; 1204 struct read_element_status_page_header *pg_hdr; 1205 struct read_element_status_descriptor *desc; 1206 caddr_t data = NULL; 1207 size_t size, desclen; 1208 int avail, i, error = 0; 1209 int curdata, dvcid, sense_flags; 1210 int try_no_dvcid = 0; 1211 struct changer_element_status *user_data = NULL; 1212 struct ch_softc *softc; 1213 union ccb *ccb; 1214 int chet = cesr->cesr_element_type; 1215 int want_voltags = (cesr->cesr_flags & CESR_VOLTAGS) ? 1 : 0; 1216 1217 softc = (struct ch_softc *)periph->softc; 1218 1219 /* perform argument checking */ 1220 1221 /* 1222 * Perform a range check on the cesr_element_{base,count} 1223 * request argument fields. 1224 */ 1225 if ((softc->sc_counts[chet] - cesr->cesr_element_base) <= 0 1226 || (cesr->cesr_element_base + cesr->cesr_element_count) 1227 > softc->sc_counts[chet]) 1228 return (EINVAL); 1229 1230 /* 1231 * Request one descriptor for the given element type. This 1232 * is used to determine the size of the descriptor so that 1233 * we can allocate enough storage for all of them. We assume 1234 * that the first one can fit into 1k. 1235 */ 1236 cam_periph_unlock(periph); 1237 data = (caddr_t)malloc(1024, M_DEVBUF, M_WAITOK); 1238 1239 cam_periph_lock(periph); 1240 ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL); 1241 1242 sense_flags = SF_RETRY_UA; 1243 if (softc->quirks & CH_Q_NO_DVCID) { 1244 dvcid = 0; 1245 curdata = 0; 1246 } else { 1247 dvcid = 1; 1248 curdata = 1; 1249 /* 1250 * Don't print anything for an Illegal Request, because 1251 * these flags can cause some changers to complain. We'll 1252 * retry without them if we get an error. 1253 */ 1254 sense_flags |= SF_QUIET_IR; 1255 } 1256 1257 retry_einval: 1258 1259 scsi_read_element_status(&ccb->csio, 1260 /* retries */ 1, 1261 /* cbfcnp */ chdone, 1262 /* tag_action */ MSG_SIMPLE_Q_TAG, 1263 /* voltag */ want_voltags, 1264 /* sea */ softc->sc_firsts[chet], 1265 /* curdata */ curdata, 1266 /* dvcid */ dvcid, 1267 /* count */ 1, 1268 /* data_ptr */ data, 1269 /* dxfer_len */ 1024, 1270 /* sense_len */ SSD_FULL_SIZE, 1271 /* timeout */ CH_TIMEOUT_READ_ELEMENT_STATUS); 1272 1273 error = cam_periph_runccb(ccb, cherror, /*cam_flags*/ CAM_RETRY_SELTO, 1274 /*sense_flags*/ sense_flags, 1275 softc->device_stats); 1276 1277 /* 1278 * An Illegal Request sense key (only used if there is no asc/ascq) 1279 * or 0x24,0x00 for an ASC/ASCQ both map to EINVAL. If dvcid or 1280 * curdata are set (we set both or neither), try turning them off 1281 * and see if the command is successful. 1282 */ 1283 if ((error == EINVAL) 1284 && (dvcid || curdata)) { 1285 dvcid = 0; 1286 curdata = 0; 1287 error = 0; 1288 /* At this point we want to report any Illegal Request */ 1289 sense_flags &= ~SF_QUIET_IR; 1290 try_no_dvcid = 1; 1291 goto retry_einval; 1292 } 1293 1294 /* 1295 * In this case, we tried a read element status with dvcid and 1296 * curdata set, and it failed. We retried without those bits, and 1297 * it succeeded. Suggest to the user that he set a quirk, so we 1298 * don't go through the retry process the first time in the future. 1299 * This should only happen on changers that claim SCSI-3 or higher, 1300 * but don't support these bits. 1301 */ 1302 if ((try_no_dvcid != 0) 1303 && (error == 0)) 1304 softc->quirks |= CH_Q_NO_DVCID; 1305 1306 if (error) 1307 goto done; 1308 cam_periph_unlock(periph); 1309 1310 st_hdr = (struct read_element_status_header *)data; 1311 pg_hdr = (struct read_element_status_page_header *)((uintptr_t)st_hdr + 1312 sizeof(struct read_element_status_header)); 1313 desclen = scsi_2btoul(pg_hdr->edl); 1314 1315 size = sizeof(struct read_element_status_header) + 1316 sizeof(struct read_element_status_page_header) + 1317 (desclen * cesr->cesr_element_count); 1318 /* 1319 * Reallocate storage for descriptors and get them from the 1320 * device. 1321 */ 1322 free(data, M_DEVBUF); 1323 data = (caddr_t)malloc(size, M_DEVBUF, M_WAITOK); 1324 1325 cam_periph_lock(periph); 1326 scsi_read_element_status(&ccb->csio, 1327 /* retries */ 1, 1328 /* cbfcnp */ chdone, 1329 /* tag_action */ MSG_SIMPLE_Q_TAG, 1330 /* voltag */ want_voltags, 1331 /* sea */ softc->sc_firsts[chet] 1332 + cesr->cesr_element_base, 1333 /* curdata */ curdata, 1334 /* dvcid */ dvcid, 1335 /* count */ cesr->cesr_element_count, 1336 /* data_ptr */ data, 1337 /* dxfer_len */ size, 1338 /* sense_len */ SSD_FULL_SIZE, 1339 /* timeout */ CH_TIMEOUT_READ_ELEMENT_STATUS); 1340 1341 error = cam_periph_runccb(ccb, cherror, /*cam_flags*/ CAM_RETRY_SELTO, 1342 /*sense_flags*/ SF_RETRY_UA, 1343 softc->device_stats); 1344 1345 if (error) 1346 goto done; 1347 cam_periph_unlock(periph); 1348 1349 /* 1350 * Fill in the user status array. 1351 */ 1352 st_hdr = (struct read_element_status_header *)data; 1353 pg_hdr = (struct read_element_status_page_header *)((uintptr_t)st_hdr + 1354 sizeof(struct read_element_status_header)); 1355 avail = scsi_2btoul(st_hdr->count); 1356 1357 if (avail != cesr->cesr_element_count) { 1358 xpt_print(periph->path, 1359 "warning, READ ELEMENT STATUS avail != count\n"); 1360 } 1361 1362 user_data = (struct changer_element_status *) 1363 malloc(avail * sizeof(struct changer_element_status), 1364 M_DEVBUF, M_WAITOK | M_ZERO); 1365 1366 desc = (struct read_element_status_descriptor *)((uintptr_t)data + 1367 sizeof(struct read_element_status_header) + 1368 sizeof(struct read_element_status_page_header)); 1369 /* 1370 * Set up the individual element status structures 1371 */ 1372 for (i = 0; i < avail; ++i) { 1373 struct changer_element_status *ces; 1374 1375 /* 1376 * In the changer_element_status structure, fields from 1377 * the beginning to the field of ces_scsi_lun are common 1378 * between SCSI-2 and SCSI-3, while all the rest are new 1379 * from SCSI-3. In order to maintain backward compatibility 1380 * of the chio command, the ces pointer, below, is computed 1381 * such that it lines up with the structure boundary 1382 * corresponding to the SCSI version. 1383 */ 1384 ces = cmd == OCHIOGSTATUS ? 1385 (struct changer_element_status *) 1386 ((unsigned char *)user_data + i * 1387 (offsetof(struct changer_element_status,ces_scsi_lun)+1)): 1388 &user_data[i]; 1389 1390 copy_element_status(softc, pg_hdr->flags, desc, 1391 ces, scsi_version); 1392 1393 desc = (struct read_element_status_descriptor *) 1394 ((unsigned char *)desc + desclen); 1395 } 1396 1397 /* Copy element status structures out to userspace. */ 1398 if (cmd == OCHIOGSTATUS) 1399 error = copyout(user_data, 1400 cesr->cesr_element_status, 1401 avail* (offsetof(struct changer_element_status, 1402 ces_scsi_lun) + 1)); 1403 else 1404 error = copyout(user_data, 1405 cesr->cesr_element_status, 1406 avail * sizeof(struct changer_element_status)); 1407 1408 cam_periph_lock(periph); 1409 1410 done: 1411 xpt_release_ccb(ccb); 1412 1413 if (data != NULL) 1414 free(data, M_DEVBUF); 1415 if (user_data != NULL) 1416 free(user_data, M_DEVBUF); 1417 1418 return (error); 1419 } 1420 1421 static int 1422 chielem(struct cam_periph *periph, 1423 unsigned int timeout) 1424 { 1425 union ccb *ccb; 1426 struct ch_softc *softc; 1427 int error; 1428 1429 if (!timeout) { 1430 timeout = CH_TIMEOUT_INITIALIZE_ELEMENT_STATUS; 1431 } else { 1432 timeout *= 1000; 1433 } 1434 1435 error = 0; 1436 softc = (struct ch_softc *)periph->softc; 1437 1438 ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL); 1439 1440 scsi_initialize_element_status(&ccb->csio, 1441 /* retries */ 1, 1442 /* cbfcnp */ chdone, 1443 /* tag_action */ MSG_SIMPLE_Q_TAG, 1444 /* sense_len */ SSD_FULL_SIZE, 1445 /* timeout */ timeout); 1446 1447 error = cam_periph_runccb(ccb, cherror, /*cam_flags*/ CAM_RETRY_SELTO, 1448 /*sense_flags*/ SF_RETRY_UA, 1449 softc->device_stats); 1450 1451 xpt_release_ccb(ccb); 1452 1453 return(error); 1454 } 1455 1456 static int 1457 chsetvoltag(struct cam_periph *periph, 1458 struct changer_set_voltag_request *csvr) 1459 { 1460 union ccb *ccb; 1461 struct ch_softc *softc; 1462 u_int16_t ea; 1463 u_int8_t sac; 1464 struct scsi_send_volume_tag_parameters ssvtp; 1465 int error; 1466 int i; 1467 1468 error = 0; 1469 softc = (struct ch_softc *)periph->softc; 1470 1471 bzero(&ssvtp, sizeof(ssvtp)); 1472 for (i=0; i<sizeof(ssvtp.vitf); i++) { 1473 ssvtp.vitf[i] = ' '; 1474 } 1475 1476 /* 1477 * Check arguments. 1478 */ 1479 if (csvr->csvr_type > CHET_DT) 1480 return EINVAL; 1481 if (csvr->csvr_addr > (softc->sc_counts[csvr->csvr_type] - 1)) 1482 return ENODEV; 1483 1484 ea = softc->sc_firsts[csvr->csvr_type] + csvr->csvr_addr; 1485 1486 if (csvr->csvr_flags & CSVR_ALTERNATE) { 1487 switch (csvr->csvr_flags & CSVR_MODE_MASK) { 1488 case CSVR_MODE_SET: 1489 sac = SEND_VOLUME_TAG_ASSERT_ALTERNATE; 1490 break; 1491 case CSVR_MODE_REPLACE: 1492 sac = SEND_VOLUME_TAG_REPLACE_ALTERNATE; 1493 break; 1494 case CSVR_MODE_CLEAR: 1495 sac = SEND_VOLUME_TAG_UNDEFINED_ALTERNATE; 1496 break; 1497 default: 1498 error = EINVAL; 1499 goto out; 1500 } 1501 } else { 1502 switch (csvr->csvr_flags & CSVR_MODE_MASK) { 1503 case CSVR_MODE_SET: 1504 sac = SEND_VOLUME_TAG_ASSERT_PRIMARY; 1505 break; 1506 case CSVR_MODE_REPLACE: 1507 sac = SEND_VOLUME_TAG_REPLACE_PRIMARY; 1508 break; 1509 case CSVR_MODE_CLEAR: 1510 sac = SEND_VOLUME_TAG_UNDEFINED_PRIMARY; 1511 break; 1512 default: 1513 error = EINVAL; 1514 goto out; 1515 } 1516 } 1517 1518 memcpy(ssvtp.vitf, csvr->csvr_voltag.cv_volid, 1519 min(strlen(csvr->csvr_voltag.cv_volid), sizeof(ssvtp.vitf))); 1520 scsi_ulto2b(csvr->csvr_voltag.cv_serial, ssvtp.minvsn); 1521 1522 ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL); 1523 1524 scsi_send_volume_tag(&ccb->csio, 1525 /* retries */ 1, 1526 /* cbfcnp */ chdone, 1527 /* tag_action */ MSG_SIMPLE_Q_TAG, 1528 /* element_address */ ea, 1529 /* send_action_code */ sac, 1530 /* parameters */ &ssvtp, 1531 /* sense_len */ SSD_FULL_SIZE, 1532 /* timeout */ CH_TIMEOUT_SEND_VOLTAG); 1533 1534 error = cam_periph_runccb(ccb, cherror, /*cam_flags*/ CAM_RETRY_SELTO, 1535 /*sense_flags*/ SF_RETRY_UA, 1536 softc->device_stats); 1537 1538 xpt_release_ccb(ccb); 1539 1540 out: 1541 return error; 1542 } 1543 1544 static int 1545 chgetparams(struct cam_periph *periph) 1546 { 1547 union ccb *ccb; 1548 struct ch_softc *softc; 1549 void *mode_buffer; 1550 int mode_buffer_len; 1551 struct page_element_address_assignment *ea; 1552 struct page_device_capabilities *cap; 1553 int error, from, dbd; 1554 u_int8_t *moves, *exchanges; 1555 1556 error = 0; 1557 1558 softc = (struct ch_softc *)periph->softc; 1559 1560 ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL); 1561 1562 /* 1563 * The scsi_mode_sense_data structure is just a convenience 1564 * structure that allows us to easily calculate the worst-case 1565 * storage size of the mode sense buffer. 1566 */ 1567 mode_buffer_len = sizeof(struct scsi_mode_sense_data); 1568 1569 mode_buffer = malloc(mode_buffer_len, M_SCSICH, M_NOWAIT); 1570 1571 if (mode_buffer == NULL) { 1572 printf("chgetparams: couldn't malloc mode sense data\n"); 1573 return(ENOSPC); 1574 } 1575 1576 bzero(mode_buffer, mode_buffer_len); 1577 1578 if (softc->quirks & CH_Q_NO_DBD) 1579 dbd = FALSE; 1580 else 1581 dbd = TRUE; 1582 1583 /* 1584 * Get the element address assignment page. 1585 */ 1586 scsi_mode_sense(&ccb->csio, 1587 /* retries */ 1, 1588 /* cbfcnp */ chdone, 1589 /* tag_action */ MSG_SIMPLE_Q_TAG, 1590 /* dbd */ dbd, 1591 /* page_code */ SMS_PAGE_CTRL_CURRENT, 1592 /* page */ CH_ELEMENT_ADDR_ASSIGN_PAGE, 1593 /* param_buf */ (u_int8_t *)mode_buffer, 1594 /* param_len */ mode_buffer_len, 1595 /* sense_len */ SSD_FULL_SIZE, 1596 /* timeout */ CH_TIMEOUT_MODE_SENSE); 1597 1598 error = cam_periph_runccb(ccb, cherror, /*cam_flags*/ CAM_RETRY_SELTO, 1599 /* sense_flags */ SF_RETRY_UA|SF_NO_PRINT, 1600 softc->device_stats); 1601 1602 if (error) { 1603 if (dbd) { 1604 struct scsi_mode_sense_6 *sms; 1605 1606 sms = (struct scsi_mode_sense_6 *) 1607 ccb->csio.cdb_io.cdb_bytes; 1608 1609 sms->byte2 &= ~SMS_DBD; 1610 error = cam_periph_runccb(ccb, cherror, 1611 /*cam_flags*/ CAM_RETRY_SELTO, 1612 /*sense_flags*/ SF_RETRY_UA, 1613 softc->device_stats); 1614 } else { 1615 /* 1616 * Since we disabled sense printing above, print 1617 * out the sense here since we got an error. 1618 */ 1619 scsi_sense_print(&ccb->csio); 1620 } 1621 1622 if (error) { 1623 xpt_print(periph->path, 1624 "chgetparams: error getting element " 1625 "address page\n"); 1626 xpt_release_ccb(ccb); 1627 free(mode_buffer, M_SCSICH); 1628 return(error); 1629 } 1630 } 1631 1632 ea = (struct page_element_address_assignment *) 1633 find_mode_page_6((struct scsi_mode_header_6 *)mode_buffer); 1634 1635 softc->sc_firsts[CHET_MT] = scsi_2btoul(ea->mtea); 1636 softc->sc_counts[CHET_MT] = scsi_2btoul(ea->nmte); 1637 softc->sc_firsts[CHET_ST] = scsi_2btoul(ea->fsea); 1638 softc->sc_counts[CHET_ST] = scsi_2btoul(ea->nse); 1639 softc->sc_firsts[CHET_IE] = scsi_2btoul(ea->fieea); 1640 softc->sc_counts[CHET_IE] = scsi_2btoul(ea->niee); 1641 softc->sc_firsts[CHET_DT] = scsi_2btoul(ea->fdtea); 1642 softc->sc_counts[CHET_DT] = scsi_2btoul(ea->ndte); 1643 1644 bzero(mode_buffer, mode_buffer_len); 1645 1646 /* 1647 * Now get the device capabilities page. 1648 */ 1649 scsi_mode_sense(&ccb->csio, 1650 /* retries */ 1, 1651 /* cbfcnp */ chdone, 1652 /* tag_action */ MSG_SIMPLE_Q_TAG, 1653 /* dbd */ dbd, 1654 /* page_code */ SMS_PAGE_CTRL_CURRENT, 1655 /* page */ CH_DEVICE_CAP_PAGE, 1656 /* param_buf */ (u_int8_t *)mode_buffer, 1657 /* param_len */ mode_buffer_len, 1658 /* sense_len */ SSD_FULL_SIZE, 1659 /* timeout */ CH_TIMEOUT_MODE_SENSE); 1660 1661 error = cam_periph_runccb(ccb, cherror, /*cam_flags*/ CAM_RETRY_SELTO, 1662 /* sense_flags */ SF_RETRY_UA | SF_NO_PRINT, 1663 softc->device_stats); 1664 1665 if (error) { 1666 if (dbd) { 1667 struct scsi_mode_sense_6 *sms; 1668 1669 sms = (struct scsi_mode_sense_6 *) 1670 ccb->csio.cdb_io.cdb_bytes; 1671 1672 sms->byte2 &= ~SMS_DBD; 1673 error = cam_periph_runccb(ccb, cherror, 1674 /*cam_flags*/ CAM_RETRY_SELTO, 1675 /*sense_flags*/ SF_RETRY_UA, 1676 softc->device_stats); 1677 } else { 1678 /* 1679 * Since we disabled sense printing above, print 1680 * out the sense here since we got an error. 1681 */ 1682 scsi_sense_print(&ccb->csio); 1683 } 1684 1685 if (error) { 1686 xpt_print(periph->path, 1687 "chgetparams: error getting device " 1688 "capabilities page\n"); 1689 xpt_release_ccb(ccb); 1690 free(mode_buffer, M_SCSICH); 1691 return(error); 1692 } 1693 } 1694 1695 xpt_release_ccb(ccb); 1696 1697 cap = (struct page_device_capabilities *) 1698 find_mode_page_6((struct scsi_mode_header_6 *)mode_buffer); 1699 1700 bzero(softc->sc_movemask, sizeof(softc->sc_movemask)); 1701 bzero(softc->sc_exchangemask, sizeof(softc->sc_exchangemask)); 1702 moves = cap->move_from; 1703 exchanges = cap->exchange_with; 1704 for (from = CHET_MT; from <= CHET_MAX; ++from) { 1705 softc->sc_movemask[from] = moves[from]; 1706 softc->sc_exchangemask[from] = exchanges[from]; 1707 } 1708 1709 free(mode_buffer, M_SCSICH); 1710 1711 return(error); 1712 } 1713 1714 static int 1715 chscsiversion(struct cam_periph *periph) 1716 { 1717 struct scsi_inquiry_data *inq_data; 1718 struct ccb_getdev *cgd; 1719 int dev_scsi_version; 1720 1721 cam_periph_assert(periph, MA_OWNED); 1722 if ((cgd = (struct ccb_getdev *)xpt_alloc_ccb_nowait()) == NULL) 1723 return (-1); 1724 /* 1725 * Get the device information. 1726 */ 1727 xpt_setup_ccb(&cgd->ccb_h, 1728 periph->path, 1729 CAM_PRIORITY_NORMAL); 1730 cgd->ccb_h.func_code = XPT_GDEV_TYPE; 1731 xpt_action((union ccb *)cgd); 1732 1733 if (cgd->ccb_h.status != CAM_REQ_CMP) { 1734 xpt_free_ccb((union ccb *)cgd); 1735 return -1; 1736 } 1737 1738 inq_data = &cgd->inq_data; 1739 dev_scsi_version = inq_data->version; 1740 xpt_free_ccb((union ccb *)cgd); 1741 1742 return dev_scsi_version; 1743 } 1744 1745 void 1746 scsi_move_medium(struct ccb_scsiio *csio, u_int32_t retries, 1747 void (*cbfcnp)(struct cam_periph *, union ccb *), 1748 u_int8_t tag_action, u_int32_t tea, u_int32_t src, 1749 u_int32_t dst, int invert, u_int8_t sense_len, 1750 u_int32_t timeout) 1751 { 1752 struct scsi_move_medium *scsi_cmd; 1753 1754 scsi_cmd = (struct scsi_move_medium *)&csio->cdb_io.cdb_bytes; 1755 bzero(scsi_cmd, sizeof(*scsi_cmd)); 1756 1757 scsi_cmd->opcode = MOVE_MEDIUM; 1758 1759 scsi_ulto2b(tea, scsi_cmd->tea); 1760 scsi_ulto2b(src, scsi_cmd->src); 1761 scsi_ulto2b(dst, scsi_cmd->dst); 1762 1763 if (invert) 1764 scsi_cmd->invert |= MOVE_MEDIUM_INVERT; 1765 1766 cam_fill_csio(csio, 1767 retries, 1768 cbfcnp, 1769 /*flags*/ CAM_DIR_NONE, 1770 tag_action, 1771 /*data_ptr*/ NULL, 1772 /*dxfer_len*/ 0, 1773 sense_len, 1774 sizeof(*scsi_cmd), 1775 timeout); 1776 } 1777 1778 void 1779 scsi_exchange_medium(struct ccb_scsiio *csio, u_int32_t retries, 1780 void (*cbfcnp)(struct cam_periph *, union ccb *), 1781 u_int8_t tag_action, u_int32_t tea, u_int32_t src, 1782 u_int32_t dst1, u_int32_t dst2, int invert1, 1783 int invert2, u_int8_t sense_len, u_int32_t timeout) 1784 { 1785 struct scsi_exchange_medium *scsi_cmd; 1786 1787 scsi_cmd = (struct scsi_exchange_medium *)&csio->cdb_io.cdb_bytes; 1788 bzero(scsi_cmd, sizeof(*scsi_cmd)); 1789 1790 scsi_cmd->opcode = EXCHANGE_MEDIUM; 1791 1792 scsi_ulto2b(tea, scsi_cmd->tea); 1793 scsi_ulto2b(src, scsi_cmd->src); 1794 scsi_ulto2b(dst1, scsi_cmd->fdst); 1795 scsi_ulto2b(dst2, scsi_cmd->sdst); 1796 1797 if (invert1) 1798 scsi_cmd->invert |= EXCHANGE_MEDIUM_INV1; 1799 1800 if (invert2) 1801 scsi_cmd->invert |= EXCHANGE_MEDIUM_INV2; 1802 1803 cam_fill_csio(csio, 1804 retries, 1805 cbfcnp, 1806 /*flags*/ CAM_DIR_NONE, 1807 tag_action, 1808 /*data_ptr*/ NULL, 1809 /*dxfer_len*/ 0, 1810 sense_len, 1811 sizeof(*scsi_cmd), 1812 timeout); 1813 } 1814 1815 void 1816 scsi_position_to_element(struct ccb_scsiio *csio, u_int32_t retries, 1817 void (*cbfcnp)(struct cam_periph *, union ccb *), 1818 u_int8_t tag_action, u_int32_t tea, u_int32_t dst, 1819 int invert, u_int8_t sense_len, u_int32_t timeout) 1820 { 1821 struct scsi_position_to_element *scsi_cmd; 1822 1823 scsi_cmd = (struct scsi_position_to_element *)&csio->cdb_io.cdb_bytes; 1824 bzero(scsi_cmd, sizeof(*scsi_cmd)); 1825 1826 scsi_cmd->opcode = POSITION_TO_ELEMENT; 1827 1828 scsi_ulto2b(tea, scsi_cmd->tea); 1829 scsi_ulto2b(dst, scsi_cmd->dst); 1830 1831 if (invert) 1832 scsi_cmd->invert |= POSITION_TO_ELEMENT_INVERT; 1833 1834 cam_fill_csio(csio, 1835 retries, 1836 cbfcnp, 1837 /*flags*/ CAM_DIR_NONE, 1838 tag_action, 1839 /*data_ptr*/ NULL, 1840 /*dxfer_len*/ 0, 1841 sense_len, 1842 sizeof(*scsi_cmd), 1843 timeout); 1844 } 1845 1846 void 1847 scsi_read_element_status(struct ccb_scsiio *csio, u_int32_t retries, 1848 void (*cbfcnp)(struct cam_periph *, union ccb *), 1849 u_int8_t tag_action, int voltag, u_int32_t sea, 1850 int curdata, int dvcid, 1851 u_int32_t count, u_int8_t *data_ptr, 1852 u_int32_t dxfer_len, u_int8_t sense_len, 1853 u_int32_t timeout) 1854 { 1855 struct scsi_read_element_status *scsi_cmd; 1856 1857 scsi_cmd = (struct scsi_read_element_status *)&csio->cdb_io.cdb_bytes; 1858 bzero(scsi_cmd, sizeof(*scsi_cmd)); 1859 1860 scsi_cmd->opcode = READ_ELEMENT_STATUS; 1861 1862 scsi_ulto2b(sea, scsi_cmd->sea); 1863 scsi_ulto2b(count, scsi_cmd->count); 1864 scsi_ulto3b(dxfer_len, scsi_cmd->len); 1865 if (dvcid) 1866 scsi_cmd->flags |= READ_ELEMENT_STATUS_DVCID; 1867 if (curdata) 1868 scsi_cmd->flags |= READ_ELEMENT_STATUS_CURDATA; 1869 1870 if (voltag) 1871 scsi_cmd->byte2 |= READ_ELEMENT_STATUS_VOLTAG; 1872 1873 cam_fill_csio(csio, 1874 retries, 1875 cbfcnp, 1876 /*flags*/ CAM_DIR_IN, 1877 tag_action, 1878 data_ptr, 1879 dxfer_len, 1880 sense_len, 1881 sizeof(*scsi_cmd), 1882 timeout); 1883 } 1884 1885 void 1886 scsi_initialize_element_status(struct ccb_scsiio *csio, u_int32_t retries, 1887 void (*cbfcnp)(struct cam_periph *, union ccb *), 1888 u_int8_t tag_action, u_int8_t sense_len, 1889 u_int32_t timeout) 1890 { 1891 struct scsi_initialize_element_status *scsi_cmd; 1892 1893 scsi_cmd = (struct scsi_initialize_element_status *) 1894 &csio->cdb_io.cdb_bytes; 1895 bzero(scsi_cmd, sizeof(*scsi_cmd)); 1896 1897 scsi_cmd->opcode = INITIALIZE_ELEMENT_STATUS; 1898 1899 cam_fill_csio(csio, 1900 retries, 1901 cbfcnp, 1902 /*flags*/ CAM_DIR_NONE, 1903 tag_action, 1904 /* data_ptr */ NULL, 1905 /* dxfer_len */ 0, 1906 sense_len, 1907 sizeof(*scsi_cmd), 1908 timeout); 1909 } 1910 1911 void 1912 scsi_send_volume_tag(struct ccb_scsiio *csio, u_int32_t retries, 1913 void (*cbfcnp)(struct cam_periph *, union ccb *), 1914 u_int8_t tag_action, 1915 u_int16_t element_address, 1916 u_int8_t send_action_code, 1917 struct scsi_send_volume_tag_parameters *parameters, 1918 u_int8_t sense_len, u_int32_t timeout) 1919 { 1920 struct scsi_send_volume_tag *scsi_cmd; 1921 1922 scsi_cmd = (struct scsi_send_volume_tag *) &csio->cdb_io.cdb_bytes; 1923 bzero(scsi_cmd, sizeof(*scsi_cmd)); 1924 1925 scsi_cmd->opcode = SEND_VOLUME_TAG; 1926 scsi_ulto2b(element_address, scsi_cmd->ea); 1927 scsi_cmd->sac = send_action_code; 1928 scsi_ulto2b(sizeof(*parameters), scsi_cmd->pll); 1929 1930 cam_fill_csio(csio, 1931 retries, 1932 cbfcnp, 1933 /*flags*/ CAM_DIR_OUT, 1934 tag_action, 1935 /* data_ptr */ (u_int8_t *) parameters, 1936 sizeof(*parameters), 1937 sense_len, 1938 sizeof(*scsi_cmd), 1939 timeout); 1940 } 1941