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