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 = 100000; 103 static const u_int32_t CH_TIMEOUT_EXCHANGE_MEDIUM = 100000; 104 static const u_int32_t CH_TIMEOUT_POSITION_TO_ELEMENT = 100000; 105 static const u_int32_t CH_TIMEOUT_READ_ELEMENT_STATUS = 10000; 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_WAITING 121 } ch_ccb_types; 122 123 typedef enum { 124 CH_Q_NONE = 0x00, 125 CH_Q_NO_DBD = 0x01 126 } ch_quirks; 127 128 #define ccb_state ppriv_field0 129 #define ccb_bp ppriv_ptr1 130 131 struct scsi_mode_sense_data { 132 struct scsi_mode_header_6 header; 133 struct scsi_mode_blk_desc blk_desc; 134 union { 135 struct page_element_address_assignment ea; 136 struct page_transport_geometry_parameters tg; 137 struct page_device_capabilities cap; 138 } pages; 139 }; 140 141 struct ch_softc { 142 ch_flags flags; 143 ch_state state; 144 ch_quirks quirks; 145 union ccb saved_ccb; 146 struct devstat *device_stats; 147 struct cdev *dev; 148 int open_count; 149 150 int sc_picker; /* current picker */ 151 152 /* 153 * The following information is obtained from the 154 * element address assignment page. 155 */ 156 int sc_firsts[CHET_MAX + 1]; /* firsts */ 157 int sc_counts[CHET_MAX + 1]; /* counts */ 158 159 /* 160 * The following mask defines the legal combinations 161 * of elements for the MOVE MEDIUM command. 162 */ 163 u_int8_t sc_movemask[CHET_MAX + 1]; 164 165 /* 166 * As above, but for EXCHANGE MEDIUM. 167 */ 168 u_int8_t sc_exchangemask[CHET_MAX + 1]; 169 170 /* 171 * Quirks; see below. XXX KDM not implemented yet 172 */ 173 int sc_settledelay; /* delay for settle */ 174 }; 175 176 static d_open_t chopen; 177 static d_close_t chclose; 178 static d_ioctl_t chioctl; 179 static periph_init_t chinit; 180 static periph_ctor_t chregister; 181 static periph_oninv_t choninvalidate; 182 static periph_dtor_t chcleanup; 183 static periph_start_t chstart; 184 static void chasync(void *callback_arg, u_int32_t code, 185 struct cam_path *path, void *arg); 186 static void chdone(struct cam_periph *periph, 187 union ccb *done_ccb); 188 static int cherror(union ccb *ccb, u_int32_t cam_flags, 189 u_int32_t sense_flags); 190 static int chmove(struct cam_periph *periph, 191 struct changer_move *cm); 192 static int chexchange(struct cam_periph *periph, 193 struct changer_exchange *ce); 194 static int chposition(struct cam_periph *periph, 195 struct changer_position *cp); 196 static int chgetelemstatus(struct cam_periph *periph, 197 int scsi_version, u_long cmd, 198 struct changer_element_status_request *csr); 199 static int chsetvoltag(struct cam_periph *periph, 200 struct changer_set_voltag_request *csvr); 201 static int chielem(struct cam_periph *periph, 202 unsigned int timeout); 203 static int chgetparams(struct cam_periph *periph); 204 static int chscsiversion(struct cam_periph *periph); 205 206 static struct periph_driver chdriver = 207 { 208 chinit, "ch", 209 TAILQ_HEAD_INITIALIZER(chdriver.units), /* generation */ 0 210 }; 211 212 PERIPHDRIVER_DECLARE(ch, chdriver); 213 214 static struct cdevsw ch_cdevsw = { 215 .d_version = D_VERSION, 216 .d_flags = D_TRACKCLOSE, 217 .d_open = chopen, 218 .d_close = chclose, 219 .d_ioctl = chioctl, 220 .d_name = "ch", 221 }; 222 223 static MALLOC_DEFINE(M_SCSICH, "scsi_ch", "scsi_ch buffers"); 224 225 static void 226 chinit(void) 227 { 228 cam_status status; 229 230 /* 231 * Install a global async callback. This callback will 232 * receive async callbacks like "new device found". 233 */ 234 status = xpt_register_async(AC_FOUND_DEVICE, chasync, NULL, NULL); 235 236 if (status != CAM_REQ_CMP) { 237 printf("ch: Failed to attach master async callback " 238 "due to status 0x%x!\n", status); 239 } 240 } 241 242 static void 243 chdevgonecb(void *arg) 244 { 245 struct cam_sim *sim; 246 struct ch_softc *softc; 247 struct cam_periph *periph; 248 int i; 249 250 periph = (struct cam_periph *)arg; 251 sim = periph->sim; 252 softc = (struct ch_softc *)periph->softc; 253 254 KASSERT(softc->open_count >= 0, ("Negative open count %d", 255 softc->open_count)); 256 257 mtx_lock(sim->mtx); 258 259 /* 260 * When we get this callback, we will get no more close calls from 261 * devfs. So if we have any dangling opens, we need to release the 262 * reference held for that particular context. 263 */ 264 for (i = 0; i < softc->open_count; i++) 265 cam_periph_release_locked(periph); 266 267 softc->open_count = 0; 268 269 /* 270 * Release the reference held for the device node, it is gone now. 271 */ 272 cam_periph_release_locked(periph); 273 274 /* 275 * We reference the SIM lock directly here, instead of using 276 * cam_periph_unlock(). The reason is that the final call to 277 * cam_periph_release_locked() above could result in the periph 278 * getting freed. If that is the case, dereferencing the periph 279 * with a cam_periph_unlock() call would cause a page fault. 280 */ 281 mtx_unlock(sim->mtx); 282 } 283 284 static void 285 choninvalidate(struct cam_periph *periph) 286 { 287 struct ch_softc *softc; 288 289 softc = (struct ch_softc *)periph->softc; 290 291 /* 292 * De-register any async callbacks. 293 */ 294 xpt_register_async(0, chasync, periph, periph->path); 295 296 softc->flags |= CH_FLAG_INVALID; 297 298 /* 299 * Tell devfs this device has gone away, and ask for a callback 300 * when it has cleaned up its state. 301 */ 302 destroy_dev_sched_cb(softc->dev, chdevgonecb, periph); 303 304 xpt_print(periph->path, "lost device\n"); 305 306 } 307 308 static void 309 chcleanup(struct cam_periph *periph) 310 { 311 struct ch_softc *softc; 312 313 softc = (struct ch_softc *)periph->softc; 314 315 xpt_print(periph->path, "removing device entry\n"); 316 317 devstat_remove_entry(softc->device_stats); 318 319 free(softc, M_DEVBUF); 320 } 321 322 static void 323 chasync(void *callback_arg, u_int32_t code, struct cam_path *path, void *arg) 324 { 325 struct cam_periph *periph; 326 327 periph = (struct cam_periph *)callback_arg; 328 329 switch(code) { 330 case AC_FOUND_DEVICE: 331 { 332 struct ccb_getdev *cgd; 333 cam_status status; 334 335 cgd = (struct ccb_getdev *)arg; 336 if (cgd == NULL) 337 break; 338 339 if (cgd->protocol != PROTO_SCSI) 340 break; 341 342 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, cgd->ccb_h.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 bzero(&cpi, sizeof(cpi)); 396 xpt_setup_ccb(&cpi.ccb_h, periph->path, CAM_PRIORITY_NORMAL); 397 cpi.ccb_h.func_code = XPT_PATH_INQ; 398 xpt_action((union ccb *)&cpi); 399 400 /* 401 * Changers don't have a blocksize, and obviously don't support 402 * tagged queueing. 403 */ 404 cam_periph_unlock(periph); 405 softc->device_stats = devstat_new_entry("ch", 406 periph->unit_number, 0, 407 DEVSTAT_NO_BLOCKSIZE | DEVSTAT_NO_ORDERED_TAGS, 408 SID_TYPE(&cgd->inq_data) | 409 XPORT_DEVSTAT_TYPE(cpi.transport), 410 DEVSTAT_PRIORITY_OTHER); 411 412 /* 413 * Acquire a reference to the periph before we create the devfs 414 * instance for it. We'll release this reference once the devfs 415 * instance has been freed. 416 */ 417 if (cam_periph_acquire(periph) != CAM_REQ_CMP) { 418 xpt_print(periph->path, "%s: lost periph during " 419 "registration!\n", __func__); 420 cam_periph_lock(periph); 421 return (CAM_REQ_CMP_ERR); 422 } 423 424 425 /* Register the device */ 426 softc->dev = make_dev(&ch_cdevsw, periph->unit_number, UID_ROOT, 427 GID_OPERATOR, 0600, "%s%d", periph->periph_name, 428 periph->unit_number); 429 cam_periph_lock(periph); 430 softc->dev->si_drv1 = periph; 431 432 /* 433 * Add an async callback so that we get 434 * notified if this device goes away. 435 */ 436 xpt_register_async(AC_LOST_DEVICE, chasync, periph, periph->path); 437 438 /* 439 * Lock this periph until we are setup. 440 * This first call can't block 441 */ 442 (void)cam_periph_hold(periph, PRIBIO); 443 xpt_schedule(periph, CAM_PRIORITY_DEV); 444 445 return(CAM_REQ_CMP); 446 } 447 448 static int 449 chopen(struct cdev *dev, int flags, int fmt, struct thread *td) 450 { 451 struct cam_periph *periph; 452 struct ch_softc *softc; 453 int error; 454 455 periph = (struct cam_periph *)dev->si_drv1; 456 if (cam_periph_acquire(periph) != CAM_REQ_CMP) 457 return (ENXIO); 458 459 softc = (struct ch_softc *)periph->softc; 460 461 cam_periph_lock(periph); 462 463 if (softc->flags & CH_FLAG_INVALID) { 464 cam_periph_release_locked(periph); 465 cam_periph_unlock(periph); 466 return(ENXIO); 467 } 468 469 if ((error = cam_periph_hold(periph, PRIBIO | PCATCH)) != 0) { 470 cam_periph_unlock(periph); 471 cam_periph_release(periph); 472 return (error); 473 } 474 475 /* 476 * Load information about this changer device into the softc. 477 */ 478 if ((error = chgetparams(periph)) != 0) { 479 cam_periph_unhold(periph); 480 cam_periph_release_locked(periph); 481 cam_periph_unlock(periph); 482 return(error); 483 } 484 485 cam_periph_unhold(periph); 486 487 softc->open_count++; 488 489 cam_periph_unlock(periph); 490 491 return(error); 492 } 493 494 static int 495 chclose(struct cdev *dev, int flag, int fmt, struct thread *td) 496 { 497 struct cam_sim *sim; 498 struct cam_periph *periph; 499 struct ch_softc *softc; 500 501 periph = (struct cam_periph *)dev->si_drv1; 502 if (periph == NULL) 503 return(ENXIO); 504 505 sim = periph->sim; 506 softc = (struct ch_softc *)periph->softc; 507 508 mtx_lock(sim->mtx); 509 510 softc->open_count--; 511 512 cam_periph_release_locked(periph); 513 514 /* 515 * We reference the SIM lock directly here, instead of using 516 * cam_periph_unlock(). The reason is that the call to 517 * cam_periph_release_locked() above could result in the periph 518 * getting freed. If that is the case, dereferencing the periph 519 * with a cam_periph_unlock() call would cause a page fault. 520 * 521 * cam_periph_release() avoids this problem using the same method, 522 * but we're manually acquiring and dropping the lock here to 523 * protect the open count and avoid another lock acquisition and 524 * release. 525 */ 526 mtx_unlock(sim->mtx); 527 528 return(0); 529 } 530 531 static void 532 chstart(struct cam_periph *periph, union ccb *start_ccb) 533 { 534 struct ch_softc *softc; 535 536 softc = (struct ch_softc *)periph->softc; 537 538 switch (softc->state) { 539 case CH_STATE_NORMAL: 540 { 541 if (periph->immediate_priority <= periph->pinfo.priority){ 542 start_ccb->ccb_h.ccb_state = CH_CCB_WAITING; 543 544 SLIST_INSERT_HEAD(&periph->ccb_list, &start_ccb->ccb_h, 545 periph_links.sle); 546 periph->immediate_priority = CAM_PRIORITY_NONE; 547 wakeup(&periph->ccb_list); 548 } 549 break; 550 } 551 case CH_STATE_PROBE: 552 { 553 int mode_buffer_len; 554 void *mode_buffer; 555 556 /* 557 * Include the block descriptor when calculating the mode 558 * buffer length, 559 */ 560 mode_buffer_len = sizeof(struct scsi_mode_header_6) + 561 sizeof(struct scsi_mode_blk_desc) + 562 sizeof(struct page_element_address_assignment); 563 564 mode_buffer = malloc(mode_buffer_len, M_SCSICH, M_NOWAIT); 565 566 if (mode_buffer == NULL) { 567 printf("chstart: couldn't malloc mode sense data\n"); 568 break; 569 } 570 bzero(mode_buffer, mode_buffer_len); 571 572 /* 573 * Get the element address assignment page. 574 */ 575 scsi_mode_sense(&start_ccb->csio, 576 /* retries */ 1, 577 /* cbfcnp */ chdone, 578 /* tag_action */ MSG_SIMPLE_Q_TAG, 579 /* dbd */ (softc->quirks & CH_Q_NO_DBD) ? 580 FALSE : TRUE, 581 /* page_code */ SMS_PAGE_CTRL_CURRENT, 582 /* page */ CH_ELEMENT_ADDR_ASSIGN_PAGE, 583 /* param_buf */ (u_int8_t *)mode_buffer, 584 /* param_len */ mode_buffer_len, 585 /* sense_len */ SSD_FULL_SIZE, 586 /* timeout */ CH_TIMEOUT_MODE_SENSE); 587 588 start_ccb->ccb_h.ccb_bp = NULL; 589 start_ccb->ccb_h.ccb_state = CH_CCB_PROBE; 590 xpt_action(start_ccb); 591 break; 592 } 593 } 594 } 595 596 static void 597 chdone(struct cam_periph *periph, union ccb *done_ccb) 598 { 599 struct ch_softc *softc; 600 struct ccb_scsiio *csio; 601 602 softc = (struct ch_softc *)periph->softc; 603 csio = &done_ccb->csio; 604 605 switch(done_ccb->ccb_h.ccb_state) { 606 case CH_CCB_PROBE: 607 { 608 struct scsi_mode_header_6 *mode_header; 609 struct page_element_address_assignment *ea; 610 char announce_buf[80]; 611 612 613 mode_header = (struct scsi_mode_header_6 *)csio->data_ptr; 614 615 ea = (struct page_element_address_assignment *) 616 find_mode_page_6(mode_header); 617 618 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP){ 619 620 softc->sc_firsts[CHET_MT] = scsi_2btoul(ea->mtea); 621 softc->sc_counts[CHET_MT] = scsi_2btoul(ea->nmte); 622 softc->sc_firsts[CHET_ST] = scsi_2btoul(ea->fsea); 623 softc->sc_counts[CHET_ST] = scsi_2btoul(ea->nse); 624 softc->sc_firsts[CHET_IE] = scsi_2btoul(ea->fieea); 625 softc->sc_counts[CHET_IE] = scsi_2btoul(ea->niee); 626 softc->sc_firsts[CHET_DT] = scsi_2btoul(ea->fdtea); 627 softc->sc_counts[CHET_DT] = scsi_2btoul(ea->ndte); 628 softc->sc_picker = softc->sc_firsts[CHET_MT]; 629 630 #define PLURAL(c) (c) == 1 ? "" : "s" 631 snprintf(announce_buf, sizeof(announce_buf), 632 "%d slot%s, %d drive%s, " 633 "%d picker%s, %d portal%s", 634 softc->sc_counts[CHET_ST], 635 PLURAL(softc->sc_counts[CHET_ST]), 636 softc->sc_counts[CHET_DT], 637 PLURAL(softc->sc_counts[CHET_DT]), 638 softc->sc_counts[CHET_MT], 639 PLURAL(softc->sc_counts[CHET_MT]), 640 softc->sc_counts[CHET_IE], 641 PLURAL(softc->sc_counts[CHET_IE])); 642 #undef PLURAL 643 } else { 644 int error; 645 646 error = cherror(done_ccb, CAM_RETRY_SELTO, 647 SF_RETRY_UA | SF_NO_PRINT); 648 /* 649 * Retry any UNIT ATTENTION type errors. They 650 * are expected at boot. 651 */ 652 if (error == ERESTART) { 653 /* 654 * A retry was scheuled, so 655 * just return. 656 */ 657 return; 658 } else if (error != 0) { 659 int retry_scheduled; 660 struct scsi_mode_sense_6 *sms; 661 662 sms = (struct scsi_mode_sense_6 *) 663 done_ccb->csio.cdb_io.cdb_bytes; 664 665 /* 666 * Check to see if block descriptors were 667 * disabled. Some devices don't like that. 668 * We're taking advantage of the fact that 669 * the first few bytes of the 6 and 10 byte 670 * mode sense commands are the same. If 671 * block descriptors were disabled, enable 672 * them and re-send the command. 673 */ 674 if (sms->byte2 & SMS_DBD) { 675 sms->byte2 &= ~SMS_DBD; 676 xpt_action(done_ccb); 677 softc->quirks |= CH_Q_NO_DBD; 678 retry_scheduled = 1; 679 } else 680 retry_scheduled = 0; 681 682 /* Don't wedge this device's queue */ 683 if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 684 cam_release_devq(done_ccb->ccb_h.path, 685 /*relsim_flags*/0, 686 /*reduction*/0, 687 /*timeout*/0, 688 /*getcount_only*/0); 689 690 if (retry_scheduled) 691 return; 692 693 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) 694 == CAM_SCSI_STATUS_ERROR) 695 scsi_sense_print(&done_ccb->csio); 696 else { 697 xpt_print(periph->path, 698 "got CAM status %#x\n", 699 done_ccb->ccb_h.status); 700 } 701 xpt_print(periph->path, "fatal error, failed " 702 "to attach to device\n"); 703 704 cam_periph_invalidate(periph); 705 706 announce_buf[0] = '\0'; 707 } 708 } 709 if (announce_buf[0] != '\0') 710 xpt_announce_periph(periph, announce_buf); 711 softc->state = CH_STATE_NORMAL; 712 free(mode_header, M_SCSICH); 713 /* 714 * Since our peripheral may be invalidated by an error 715 * above or an external event, we must release our CCB 716 * before releasing the probe lock on the peripheral. 717 * The peripheral will only go away once the last lock 718 * is removed, and we need it around for the CCB release 719 * operation. 720 */ 721 xpt_release_ccb(done_ccb); 722 cam_periph_unhold(periph); 723 return; 724 } 725 case CH_CCB_WAITING: 726 { 727 /* Caller will release the CCB */ 728 wakeup(&done_ccb->ccb_h.cbfcnp); 729 return; 730 } 731 default: 732 break; 733 } 734 xpt_release_ccb(done_ccb); 735 } 736 737 static int 738 cherror(union ccb *ccb, u_int32_t cam_flags, u_int32_t sense_flags) 739 { 740 struct ch_softc *softc; 741 struct cam_periph *periph; 742 743 periph = xpt_path_periph(ccb->ccb_h.path); 744 softc = (struct ch_softc *)periph->softc; 745 746 return (cam_periph_error(ccb, cam_flags, sense_flags, 747 &softc->saved_ccb)); 748 } 749 750 static int 751 chioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flag, struct thread *td) 752 { 753 struct cam_periph *periph; 754 struct ch_softc *softc; 755 int error; 756 757 periph = (struct cam_periph *)dev->si_drv1; 758 if (periph == NULL) 759 return(ENXIO); 760 761 cam_periph_lock(periph); 762 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("entering chioctl\n")); 763 764 softc = (struct ch_softc *)periph->softc; 765 766 error = 0; 767 768 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, 769 ("trying to do ioctl %#lx\n", cmd)); 770 771 /* 772 * If this command can change the device's state, we must 773 * have the device open for writing. 774 */ 775 switch (cmd) { 776 case CHIOGPICKER: 777 case CHIOGPARAMS: 778 case OCHIOGSTATUS: 779 case CHIOGSTATUS: 780 break; 781 782 default: 783 if ((flag & FWRITE) == 0) { 784 cam_periph_unlock(periph); 785 return (EBADF); 786 } 787 } 788 789 switch (cmd) { 790 case CHIOMOVE: 791 error = chmove(periph, (struct changer_move *)addr); 792 break; 793 794 case CHIOEXCHANGE: 795 error = chexchange(periph, (struct changer_exchange *)addr); 796 break; 797 798 case CHIOPOSITION: 799 error = chposition(periph, (struct changer_position *)addr); 800 break; 801 802 case CHIOGPICKER: 803 *(int *)addr = softc->sc_picker - softc->sc_firsts[CHET_MT]; 804 break; 805 806 case CHIOSPICKER: 807 { 808 int new_picker = *(int *)addr; 809 810 if (new_picker > (softc->sc_counts[CHET_MT] - 1)) { 811 error = EINVAL; 812 break; 813 } 814 softc->sc_picker = softc->sc_firsts[CHET_MT] + new_picker; 815 break; 816 } 817 case CHIOGPARAMS: 818 { 819 struct changer_params *cp = (struct changer_params *)addr; 820 821 cp->cp_npickers = softc->sc_counts[CHET_MT]; 822 cp->cp_nslots = softc->sc_counts[CHET_ST]; 823 cp->cp_nportals = softc->sc_counts[CHET_IE]; 824 cp->cp_ndrives = softc->sc_counts[CHET_DT]; 825 break; 826 } 827 case CHIOIELEM: 828 error = chielem(periph, *(unsigned int *)addr); 829 break; 830 831 case OCHIOGSTATUS: 832 { 833 error = chgetelemstatus(periph, SCSI_REV_2, cmd, 834 (struct changer_element_status_request *)addr); 835 break; 836 } 837 838 case CHIOGSTATUS: 839 { 840 int scsi_version; 841 842 scsi_version = chscsiversion(periph); 843 if (scsi_version >= SCSI_REV_0) { 844 error = chgetelemstatus(periph, scsi_version, cmd, 845 (struct changer_element_status_request *)addr); 846 } 847 else { /* unable to determine the SCSI version */ 848 cam_periph_unlock(periph); 849 return (ENXIO); 850 } 851 break; 852 } 853 854 case CHIOSETVOLTAG: 855 { 856 error = chsetvoltag(periph, 857 (struct changer_set_voltag_request *) addr); 858 break; 859 } 860 861 /* Implement prevent/allow? */ 862 863 default: 864 error = cam_periph_ioctl(periph, cmd, addr, cherror); 865 break; 866 } 867 868 cam_periph_unlock(periph); 869 return (error); 870 } 871 872 static int 873 chmove(struct cam_periph *periph, struct changer_move *cm) 874 { 875 struct ch_softc *softc; 876 u_int16_t fromelem, toelem; 877 union ccb *ccb; 878 int error; 879 880 error = 0; 881 softc = (struct ch_softc *)periph->softc; 882 883 /* 884 * Check arguments. 885 */ 886 if ((cm->cm_fromtype > CHET_DT) || (cm->cm_totype > CHET_DT)) 887 return (EINVAL); 888 if ((cm->cm_fromunit > (softc->sc_counts[cm->cm_fromtype] - 1)) || 889 (cm->cm_tounit > (softc->sc_counts[cm->cm_totype] - 1))) 890 return (ENODEV); 891 892 /* 893 * Check the request against the changer's capabilities. 894 */ 895 if ((softc->sc_movemask[cm->cm_fromtype] & (1 << cm->cm_totype)) == 0) 896 return (ENODEV); 897 898 /* 899 * Calculate the source and destination elements. 900 */ 901 fromelem = softc->sc_firsts[cm->cm_fromtype] + cm->cm_fromunit; 902 toelem = softc->sc_firsts[cm->cm_totype] + cm->cm_tounit; 903 904 ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL); 905 906 scsi_move_medium(&ccb->csio, 907 /* retries */ 1, 908 /* cbfcnp */ chdone, 909 /* tag_action */ MSG_SIMPLE_Q_TAG, 910 /* tea */ softc->sc_picker, 911 /* src */ fromelem, 912 /* dst */ toelem, 913 /* invert */ (cm->cm_flags & CM_INVERT) ? TRUE : FALSE, 914 /* sense_len */ SSD_FULL_SIZE, 915 /* timeout */ CH_TIMEOUT_MOVE_MEDIUM); 916 917 error = cam_periph_runccb(ccb, cherror, /*cam_flags*/CAM_RETRY_SELTO, 918 /*sense_flags*/ SF_RETRY_UA, 919 softc->device_stats); 920 921 xpt_release_ccb(ccb); 922 923 return(error); 924 } 925 926 static int 927 chexchange(struct cam_periph *periph, struct changer_exchange *ce) 928 { 929 struct ch_softc *softc; 930 u_int16_t src, dst1, dst2; 931 union ccb *ccb; 932 int error; 933 934 error = 0; 935 softc = (struct ch_softc *)periph->softc; 936 /* 937 * Check arguments. 938 */ 939 if ((ce->ce_srctype > CHET_DT) || (ce->ce_fdsttype > CHET_DT) || 940 (ce->ce_sdsttype > CHET_DT)) 941 return (EINVAL); 942 if ((ce->ce_srcunit > (softc->sc_counts[ce->ce_srctype] - 1)) || 943 (ce->ce_fdstunit > (softc->sc_counts[ce->ce_fdsttype] - 1)) || 944 (ce->ce_sdstunit > (softc->sc_counts[ce->ce_sdsttype] - 1))) 945 return (ENODEV); 946 947 /* 948 * Check the request against the changer's capabilities. 949 */ 950 if (((softc->sc_exchangemask[ce->ce_srctype] & 951 (1 << ce->ce_fdsttype)) == 0) || 952 ((softc->sc_exchangemask[ce->ce_fdsttype] & 953 (1 << ce->ce_sdsttype)) == 0)) 954 return (ENODEV); 955 956 /* 957 * Calculate the source and destination elements. 958 */ 959 src = softc->sc_firsts[ce->ce_srctype] + ce->ce_srcunit; 960 dst1 = softc->sc_firsts[ce->ce_fdsttype] + ce->ce_fdstunit; 961 dst2 = softc->sc_firsts[ce->ce_sdsttype] + ce->ce_sdstunit; 962 963 ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL); 964 965 scsi_exchange_medium(&ccb->csio, 966 /* retries */ 1, 967 /* cbfcnp */ chdone, 968 /* tag_action */ MSG_SIMPLE_Q_TAG, 969 /* tea */ softc->sc_picker, 970 /* src */ src, 971 /* dst1 */ dst1, 972 /* dst2 */ dst2, 973 /* invert1 */ (ce->ce_flags & CE_INVERT1) ? 974 TRUE : FALSE, 975 /* invert2 */ (ce->ce_flags & CE_INVERT2) ? 976 TRUE : FALSE, 977 /* sense_len */ SSD_FULL_SIZE, 978 /* timeout */ CH_TIMEOUT_EXCHANGE_MEDIUM); 979 980 error = cam_periph_runccb(ccb, cherror, /*cam_flags*/CAM_RETRY_SELTO, 981 /*sense_flags*/ SF_RETRY_UA, 982 softc->device_stats); 983 984 xpt_release_ccb(ccb); 985 986 return(error); 987 } 988 989 static int 990 chposition(struct cam_periph *periph, struct changer_position *cp) 991 { 992 struct ch_softc *softc; 993 u_int16_t dst; 994 union ccb *ccb; 995 int error; 996 997 error = 0; 998 softc = (struct ch_softc *)periph->softc; 999 1000 /* 1001 * Check arguments. 1002 */ 1003 if (cp->cp_type > CHET_DT) 1004 return (EINVAL); 1005 if (cp->cp_unit > (softc->sc_counts[cp->cp_type] - 1)) 1006 return (ENODEV); 1007 1008 /* 1009 * Calculate the destination element. 1010 */ 1011 dst = softc->sc_firsts[cp->cp_type] + cp->cp_unit; 1012 1013 ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL); 1014 1015 scsi_position_to_element(&ccb->csio, 1016 /* retries */ 1, 1017 /* cbfcnp */ chdone, 1018 /* tag_action */ MSG_SIMPLE_Q_TAG, 1019 /* tea */ softc->sc_picker, 1020 /* dst */ dst, 1021 /* invert */ (cp->cp_flags & CP_INVERT) ? 1022 TRUE : FALSE, 1023 /* sense_len */ SSD_FULL_SIZE, 1024 /* timeout */ CH_TIMEOUT_POSITION_TO_ELEMENT); 1025 1026 error = cam_periph_runccb(ccb, cherror, /*cam_flags*/ CAM_RETRY_SELTO, 1027 /*sense_flags*/ SF_RETRY_UA, 1028 softc->device_stats); 1029 1030 xpt_release_ccb(ccb); 1031 1032 return(error); 1033 } 1034 1035 /* 1036 * Copy a volume tag to a volume_tag struct, converting SCSI byte order 1037 * to host native byte order in the volume serial number. The volume 1038 * label as returned by the changer is transferred to user mode as 1039 * nul-terminated string. Volume labels are truncated at the first 1040 * space, as suggested by SCSI-2. 1041 */ 1042 static void 1043 copy_voltag(struct changer_voltag *uvoltag, struct volume_tag *voltag) 1044 { 1045 int i; 1046 for (i=0; i<CH_VOLTAG_MAXLEN; i++) { 1047 char c = voltag->vif[i]; 1048 if (c && c != ' ') 1049 uvoltag->cv_volid[i] = c; 1050 else 1051 break; 1052 } 1053 uvoltag->cv_serial = scsi_2btoul(voltag->vsn); 1054 } 1055 1056 /* 1057 * Copy an element status descriptor to a user-mode 1058 * changer_element_status structure. 1059 */ 1060 static void 1061 copy_element_status(struct ch_softc *softc, 1062 u_int16_t flags, 1063 struct read_element_status_descriptor *desc, 1064 struct changer_element_status *ces, 1065 int scsi_version) 1066 { 1067 u_int16_t eaddr = scsi_2btoul(desc->eaddr); 1068 u_int16_t et; 1069 struct volume_tag *pvol_tag = NULL, *avol_tag = NULL; 1070 struct read_element_status_device_id *devid = NULL; 1071 1072 ces->ces_int_addr = eaddr; 1073 /* set up logical address in element status */ 1074 for (et = CHET_MT; et <= CHET_DT; et++) { 1075 if ((softc->sc_firsts[et] <= eaddr) 1076 && ((softc->sc_firsts[et] + softc->sc_counts[et]) 1077 > eaddr)) { 1078 ces->ces_addr = eaddr - softc->sc_firsts[et]; 1079 ces->ces_type = et; 1080 break; 1081 } 1082 } 1083 1084 ces->ces_flags = desc->flags1; 1085 1086 ces->ces_sensecode = desc->sense_code; 1087 ces->ces_sensequal = desc->sense_qual; 1088 1089 if (desc->flags2 & READ_ELEMENT_STATUS_INVERT) 1090 ces->ces_flags |= CES_INVERT; 1091 1092 if (desc->flags2 & READ_ELEMENT_STATUS_SVALID) { 1093 1094 eaddr = scsi_2btoul(desc->ssea); 1095 1096 /* convert source address to logical format */ 1097 for (et = CHET_MT; et <= CHET_DT; et++) { 1098 if ((softc->sc_firsts[et] <= eaddr) 1099 && ((softc->sc_firsts[et] + softc->sc_counts[et]) 1100 > eaddr)) { 1101 ces->ces_source_addr = 1102 eaddr - softc->sc_firsts[et]; 1103 ces->ces_source_type = et; 1104 ces->ces_flags |= CES_SOURCE_VALID; 1105 break; 1106 } 1107 } 1108 1109 if (!(ces->ces_flags & CES_SOURCE_VALID)) 1110 printf("ch: warning: could not map element source " 1111 "address %ud to a valid element type\n", 1112 eaddr); 1113 } 1114 1115 /* 1116 * pvoltag and avoltag are common between SCSI-2 and later versions 1117 */ 1118 if (flags & READ_ELEMENT_STATUS_PVOLTAG) 1119 pvol_tag = &desc->voltag_devid.pvoltag; 1120 if (flags & READ_ELEMENT_STATUS_AVOLTAG) 1121 avol_tag = (flags & READ_ELEMENT_STATUS_PVOLTAG) ? 1122 &desc->voltag_devid.voltag[1] :&desc->voltag_devid.pvoltag; 1123 /* 1124 * For SCSI-3 and later, element status can carry designator and 1125 * other information. 1126 */ 1127 if (scsi_version >= SCSI_REV_SPC) { 1128 if ((flags & READ_ELEMENT_STATUS_PVOLTAG) ^ 1129 (flags & READ_ELEMENT_STATUS_AVOLTAG)) 1130 devid = &desc->voltag_devid.pvol_and_devid.devid; 1131 else if (!(flags & READ_ELEMENT_STATUS_PVOLTAG) && 1132 !(flags & READ_ELEMENT_STATUS_AVOLTAG)) 1133 devid = &desc->voltag_devid.devid; 1134 else /* Have both PVOLTAG and AVOLTAG */ 1135 devid = &desc->voltag_devid.vol_tags_and_devid.devid; 1136 } 1137 1138 if (pvol_tag) 1139 copy_voltag(&(ces->ces_pvoltag), pvol_tag); 1140 if (avol_tag) 1141 copy_voltag(&(ces->ces_pvoltag), avol_tag); 1142 if (devid != NULL) { 1143 if (devid->designator_length > 0) { 1144 bcopy((void *)devid->designator, 1145 (void *)ces->ces_designator, 1146 devid->designator_length); 1147 ces->ces_designator_length = devid->designator_length; 1148 /* 1149 * Make sure we are always NUL terminated. The 1150 * This won't matter for the binary code set, 1151 * since the user will only pay attention to the 1152 * length field. 1153 */ 1154 ces->ces_designator[devid->designator_length]= '\0'; 1155 } 1156 if (devid->piv_assoc_designator_type & 1157 READ_ELEMENT_STATUS_PIV_SET) { 1158 ces->ces_flags |= CES_PIV; 1159 ces->ces_protocol_id = 1160 READ_ELEMENT_STATUS_PROTOCOL_ID( 1161 devid->prot_code_set); 1162 } 1163 ces->ces_code_set = 1164 READ_ELEMENT_STATUS_CODE_SET(devid->prot_code_set); 1165 ces->ces_assoc = READ_ELEMENT_STATUS_ASSOCIATION( 1166 devid->piv_assoc_designator_type); 1167 ces->ces_designator_type = READ_ELEMENT_STATUS_DESIGNATOR_TYPE( 1168 devid->piv_assoc_designator_type); 1169 } else if (scsi_version > SCSI_REV_2) { 1170 /* SCSI-SPC and No devid, no designator */ 1171 ces->ces_designator_length = 0; 1172 ces->ces_designator[0] = '\0'; 1173 ces->ces_protocol_id = CES_PROTOCOL_ID_FCP_4; 1174 } 1175 1176 if (scsi_version <= SCSI_REV_2) { 1177 if (desc->dt_or_obsolete.scsi_2.dt_scsi_flags & 1178 READ_ELEMENT_STATUS_DT_IDVALID) { 1179 ces->ces_flags |= CES_SCSIID_VALID; 1180 ces->ces_scsi_id = 1181 desc->dt_or_obsolete.scsi_2.dt_scsi_addr; 1182 } 1183 1184 if (desc->dt_or_obsolete.scsi_2.dt_scsi_addr & 1185 READ_ELEMENT_STATUS_DT_LUVALID) { 1186 ces->ces_flags |= CES_LUN_VALID; 1187 ces->ces_scsi_lun = 1188 desc->dt_or_obsolete.scsi_2.dt_scsi_flags & 1189 READ_ELEMENT_STATUS_DT_LUNMASK; 1190 } 1191 } 1192 } 1193 1194 static int 1195 chgetelemstatus(struct cam_periph *periph, int scsi_version, u_long cmd, 1196 struct changer_element_status_request *cesr) 1197 { 1198 struct read_element_status_header *st_hdr; 1199 struct read_element_status_page_header *pg_hdr; 1200 struct read_element_status_descriptor *desc; 1201 caddr_t data = NULL; 1202 size_t size, desclen; 1203 int avail, i, error = 0; 1204 struct changer_element_status *user_data = NULL; 1205 struct ch_softc *softc; 1206 union ccb *ccb; 1207 int chet = cesr->cesr_element_type; 1208 int want_voltags = (cesr->cesr_flags & CESR_VOLTAGS) ? 1 : 0; 1209 1210 softc = (struct ch_softc *)periph->softc; 1211 1212 /* perform argument checking */ 1213 1214 /* 1215 * Perform a range check on the cesr_element_{base,count} 1216 * request argument fields. 1217 */ 1218 if ((softc->sc_counts[chet] - cesr->cesr_element_base) <= 0 1219 || (cesr->cesr_element_base + cesr->cesr_element_count) 1220 > softc->sc_counts[chet]) 1221 return (EINVAL); 1222 1223 /* 1224 * Request one descriptor for the given element type. This 1225 * is used to determine the size of the descriptor so that 1226 * we can allocate enough storage for all of them. We assume 1227 * that the first one can fit into 1k. 1228 */ 1229 cam_periph_unlock(periph); 1230 data = (caddr_t)malloc(1024, M_DEVBUF, M_WAITOK); 1231 1232 cam_periph_lock(periph); 1233 ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL); 1234 1235 scsi_read_element_status(&ccb->csio, 1236 /* retries */ 1, 1237 /* cbfcnp */ chdone, 1238 /* tag_action */ MSG_SIMPLE_Q_TAG, 1239 /* voltag */ want_voltags, 1240 /* sea */ softc->sc_firsts[chet], 1241 /* dvcid */ 1, 1242 /* curdata */ 1, 1243 /* count */ 1, 1244 /* data_ptr */ data, 1245 /* dxfer_len */ 1024, 1246 /* sense_len */ SSD_FULL_SIZE, 1247 /* timeout */ CH_TIMEOUT_READ_ELEMENT_STATUS); 1248 1249 error = cam_periph_runccb(ccb, cherror, /*cam_flags*/ CAM_RETRY_SELTO, 1250 /*sense_flags*/ SF_RETRY_UA, 1251 softc->device_stats); 1252 1253 if (error) 1254 goto done; 1255 cam_periph_unlock(periph); 1256 1257 st_hdr = (struct read_element_status_header *)data; 1258 pg_hdr = (struct read_element_status_page_header *)((uintptr_t)st_hdr + 1259 sizeof(struct read_element_status_header)); 1260 desclen = scsi_2btoul(pg_hdr->edl); 1261 1262 size = sizeof(struct read_element_status_header) + 1263 sizeof(struct read_element_status_page_header) + 1264 (desclen * cesr->cesr_element_count); 1265 /* 1266 * Reallocate storage for descriptors and get them from the 1267 * device. 1268 */ 1269 free(data, M_DEVBUF); 1270 data = (caddr_t)malloc(size, M_DEVBUF, M_WAITOK); 1271 1272 cam_periph_lock(periph); 1273 scsi_read_element_status(&ccb->csio, 1274 /* retries */ 1, 1275 /* cbfcnp */ chdone, 1276 /* tag_action */ MSG_SIMPLE_Q_TAG, 1277 /* voltag */ want_voltags, 1278 /* sea */ softc->sc_firsts[chet] 1279 + cesr->cesr_element_base, 1280 /* dvcid */ 1, 1281 /* curdata */ 1, 1282 /* count */ cesr->cesr_element_count, 1283 /* data_ptr */ data, 1284 /* dxfer_len */ size, 1285 /* sense_len */ SSD_FULL_SIZE, 1286 /* timeout */ CH_TIMEOUT_READ_ELEMENT_STATUS); 1287 1288 error = cam_periph_runccb(ccb, cherror, /*cam_flags*/ CAM_RETRY_SELTO, 1289 /*sense_flags*/ SF_RETRY_UA, 1290 softc->device_stats); 1291 1292 if (error) 1293 goto done; 1294 cam_periph_unlock(periph); 1295 1296 /* 1297 * Fill in the user status array. 1298 */ 1299 st_hdr = (struct read_element_status_header *)data; 1300 pg_hdr = (struct read_element_status_page_header *)((uintptr_t)st_hdr + 1301 sizeof(struct read_element_status_header)); 1302 avail = scsi_2btoul(st_hdr->count); 1303 1304 if (avail != cesr->cesr_element_count) { 1305 xpt_print(periph->path, 1306 "warning, READ ELEMENT STATUS avail != count\n"); 1307 } 1308 1309 user_data = (struct changer_element_status *) 1310 malloc(avail * sizeof(struct changer_element_status), 1311 M_DEVBUF, M_WAITOK | M_ZERO); 1312 1313 desc = (struct read_element_status_descriptor *)((uintptr_t)data + 1314 sizeof(struct read_element_status_header) + 1315 sizeof(struct read_element_status_page_header)); 1316 /* 1317 * Set up the individual element status structures 1318 */ 1319 for (i = 0; i < avail; ++i) { 1320 struct changer_element_status *ces; 1321 1322 /* 1323 * In the changer_element_status structure, fields from 1324 * the beginning to the field of ces_scsi_lun are common 1325 * between SCSI-2 and SCSI-3, while all the rest are new 1326 * from SCSI-3. In order to maintain backward compatibility 1327 * of the chio command, the ces pointer, below, is computed 1328 * such that it lines up with the structure boundary 1329 * corresponding to the SCSI version. 1330 */ 1331 ces = cmd == OCHIOGSTATUS ? 1332 (struct changer_element_status *) 1333 ((unsigned char *)user_data + i * 1334 (offsetof(struct changer_element_status,ces_scsi_lun)+1)): 1335 &user_data[i]; 1336 1337 copy_element_status(softc, pg_hdr->flags, desc, 1338 ces, scsi_version); 1339 1340 desc = (struct read_element_status_descriptor *) 1341 ((unsigned char *)desc + desclen); 1342 } 1343 1344 /* Copy element status structures out to userspace. */ 1345 if (cmd == OCHIOGSTATUS) 1346 error = copyout(user_data, 1347 cesr->cesr_element_status, 1348 avail* (offsetof(struct changer_element_status, 1349 ces_scsi_lun) + 1)); 1350 else 1351 error = copyout(user_data, 1352 cesr->cesr_element_status, 1353 avail * sizeof(struct changer_element_status)); 1354 1355 cam_periph_lock(periph); 1356 1357 done: 1358 xpt_release_ccb(ccb); 1359 1360 if (data != NULL) 1361 free(data, M_DEVBUF); 1362 if (user_data != NULL) 1363 free(user_data, M_DEVBUF); 1364 1365 return (error); 1366 } 1367 1368 static int 1369 chielem(struct cam_periph *periph, 1370 unsigned int timeout) 1371 { 1372 union ccb *ccb; 1373 struct ch_softc *softc; 1374 int error; 1375 1376 if (!timeout) { 1377 timeout = CH_TIMEOUT_INITIALIZE_ELEMENT_STATUS; 1378 } else { 1379 timeout *= 1000; 1380 } 1381 1382 error = 0; 1383 softc = (struct ch_softc *)periph->softc; 1384 1385 ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL); 1386 1387 scsi_initialize_element_status(&ccb->csio, 1388 /* retries */ 1, 1389 /* cbfcnp */ chdone, 1390 /* tag_action */ MSG_SIMPLE_Q_TAG, 1391 /* sense_len */ SSD_FULL_SIZE, 1392 /* timeout */ timeout); 1393 1394 error = cam_periph_runccb(ccb, cherror, /*cam_flags*/ CAM_RETRY_SELTO, 1395 /*sense_flags*/ SF_RETRY_UA, 1396 softc->device_stats); 1397 1398 xpt_release_ccb(ccb); 1399 1400 return(error); 1401 } 1402 1403 static int 1404 chsetvoltag(struct cam_periph *periph, 1405 struct changer_set_voltag_request *csvr) 1406 { 1407 union ccb *ccb; 1408 struct ch_softc *softc; 1409 u_int16_t ea; 1410 u_int8_t sac; 1411 struct scsi_send_volume_tag_parameters ssvtp; 1412 int error; 1413 int i; 1414 1415 error = 0; 1416 softc = (struct ch_softc *)periph->softc; 1417 1418 bzero(&ssvtp, sizeof(ssvtp)); 1419 for (i=0; i<sizeof(ssvtp.vitf); i++) { 1420 ssvtp.vitf[i] = ' '; 1421 } 1422 1423 /* 1424 * Check arguments. 1425 */ 1426 if (csvr->csvr_type > CHET_DT) 1427 return EINVAL; 1428 if (csvr->csvr_addr > (softc->sc_counts[csvr->csvr_type] - 1)) 1429 return ENODEV; 1430 1431 ea = softc->sc_firsts[csvr->csvr_type] + csvr->csvr_addr; 1432 1433 if (csvr->csvr_flags & CSVR_ALTERNATE) { 1434 switch (csvr->csvr_flags & CSVR_MODE_MASK) { 1435 case CSVR_MODE_SET: 1436 sac = SEND_VOLUME_TAG_ASSERT_ALTERNATE; 1437 break; 1438 case CSVR_MODE_REPLACE: 1439 sac = SEND_VOLUME_TAG_REPLACE_ALTERNATE; 1440 break; 1441 case CSVR_MODE_CLEAR: 1442 sac = SEND_VOLUME_TAG_UNDEFINED_ALTERNATE; 1443 break; 1444 default: 1445 error = EINVAL; 1446 goto out; 1447 } 1448 } else { 1449 switch (csvr->csvr_flags & CSVR_MODE_MASK) { 1450 case CSVR_MODE_SET: 1451 sac = SEND_VOLUME_TAG_ASSERT_PRIMARY; 1452 break; 1453 case CSVR_MODE_REPLACE: 1454 sac = SEND_VOLUME_TAG_REPLACE_PRIMARY; 1455 break; 1456 case CSVR_MODE_CLEAR: 1457 sac = SEND_VOLUME_TAG_UNDEFINED_PRIMARY; 1458 break; 1459 default: 1460 error = EINVAL; 1461 goto out; 1462 } 1463 } 1464 1465 memcpy(ssvtp.vitf, csvr->csvr_voltag.cv_volid, 1466 min(strlen(csvr->csvr_voltag.cv_volid), sizeof(ssvtp.vitf))); 1467 scsi_ulto2b(csvr->csvr_voltag.cv_serial, ssvtp.minvsn); 1468 1469 ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL); 1470 1471 scsi_send_volume_tag(&ccb->csio, 1472 /* retries */ 1, 1473 /* cbfcnp */ chdone, 1474 /* tag_action */ MSG_SIMPLE_Q_TAG, 1475 /* element_address */ ea, 1476 /* send_action_code */ sac, 1477 /* parameters */ &ssvtp, 1478 /* sense_len */ SSD_FULL_SIZE, 1479 /* timeout */ CH_TIMEOUT_SEND_VOLTAG); 1480 1481 error = cam_periph_runccb(ccb, cherror, /*cam_flags*/ CAM_RETRY_SELTO, 1482 /*sense_flags*/ SF_RETRY_UA, 1483 softc->device_stats); 1484 1485 xpt_release_ccb(ccb); 1486 1487 out: 1488 return error; 1489 } 1490 1491 static int 1492 chgetparams(struct cam_periph *periph) 1493 { 1494 union ccb *ccb; 1495 struct ch_softc *softc; 1496 void *mode_buffer; 1497 int mode_buffer_len; 1498 struct page_element_address_assignment *ea; 1499 struct page_device_capabilities *cap; 1500 int error, from, dbd; 1501 u_int8_t *moves, *exchanges; 1502 1503 error = 0; 1504 1505 softc = (struct ch_softc *)periph->softc; 1506 1507 ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL); 1508 1509 /* 1510 * The scsi_mode_sense_data structure is just a convenience 1511 * structure that allows us to easily calculate the worst-case 1512 * storage size of the mode sense buffer. 1513 */ 1514 mode_buffer_len = sizeof(struct scsi_mode_sense_data); 1515 1516 mode_buffer = malloc(mode_buffer_len, M_SCSICH, M_NOWAIT); 1517 1518 if (mode_buffer == NULL) { 1519 printf("chgetparams: couldn't malloc mode sense data\n"); 1520 return(ENOSPC); 1521 } 1522 1523 bzero(mode_buffer, mode_buffer_len); 1524 1525 if (softc->quirks & CH_Q_NO_DBD) 1526 dbd = FALSE; 1527 else 1528 dbd = TRUE; 1529 1530 /* 1531 * Get the element address assignment page. 1532 */ 1533 scsi_mode_sense(&ccb->csio, 1534 /* retries */ 1, 1535 /* cbfcnp */ chdone, 1536 /* tag_action */ MSG_SIMPLE_Q_TAG, 1537 /* dbd */ dbd, 1538 /* page_code */ SMS_PAGE_CTRL_CURRENT, 1539 /* page */ CH_ELEMENT_ADDR_ASSIGN_PAGE, 1540 /* param_buf */ (u_int8_t *)mode_buffer, 1541 /* param_len */ mode_buffer_len, 1542 /* sense_len */ SSD_FULL_SIZE, 1543 /* timeout */ CH_TIMEOUT_MODE_SENSE); 1544 1545 error = cam_periph_runccb(ccb, cherror, /*cam_flags*/ CAM_RETRY_SELTO, 1546 /* sense_flags */ SF_RETRY_UA|SF_NO_PRINT, 1547 softc->device_stats); 1548 1549 if (error) { 1550 if (dbd) { 1551 struct scsi_mode_sense_6 *sms; 1552 1553 sms = (struct scsi_mode_sense_6 *) 1554 ccb->csio.cdb_io.cdb_bytes; 1555 1556 sms->byte2 &= ~SMS_DBD; 1557 error = cam_periph_runccb(ccb, cherror, 1558 /*cam_flags*/ CAM_RETRY_SELTO, 1559 /*sense_flags*/ SF_RETRY_UA, 1560 softc->device_stats); 1561 } else { 1562 /* 1563 * Since we disabled sense printing above, print 1564 * out the sense here since we got an error. 1565 */ 1566 scsi_sense_print(&ccb->csio); 1567 } 1568 1569 if (error) { 1570 xpt_print(periph->path, 1571 "chgetparams: error getting element " 1572 "address page\n"); 1573 xpt_release_ccb(ccb); 1574 free(mode_buffer, M_SCSICH); 1575 return(error); 1576 } 1577 } 1578 1579 ea = (struct page_element_address_assignment *) 1580 find_mode_page_6((struct scsi_mode_header_6 *)mode_buffer); 1581 1582 softc->sc_firsts[CHET_MT] = scsi_2btoul(ea->mtea); 1583 softc->sc_counts[CHET_MT] = scsi_2btoul(ea->nmte); 1584 softc->sc_firsts[CHET_ST] = scsi_2btoul(ea->fsea); 1585 softc->sc_counts[CHET_ST] = scsi_2btoul(ea->nse); 1586 softc->sc_firsts[CHET_IE] = scsi_2btoul(ea->fieea); 1587 softc->sc_counts[CHET_IE] = scsi_2btoul(ea->niee); 1588 softc->sc_firsts[CHET_DT] = scsi_2btoul(ea->fdtea); 1589 softc->sc_counts[CHET_DT] = scsi_2btoul(ea->ndte); 1590 1591 bzero(mode_buffer, mode_buffer_len); 1592 1593 /* 1594 * Now get the device capabilities page. 1595 */ 1596 scsi_mode_sense(&ccb->csio, 1597 /* retries */ 1, 1598 /* cbfcnp */ chdone, 1599 /* tag_action */ MSG_SIMPLE_Q_TAG, 1600 /* dbd */ dbd, 1601 /* page_code */ SMS_PAGE_CTRL_CURRENT, 1602 /* page */ CH_DEVICE_CAP_PAGE, 1603 /* param_buf */ (u_int8_t *)mode_buffer, 1604 /* param_len */ mode_buffer_len, 1605 /* sense_len */ SSD_FULL_SIZE, 1606 /* timeout */ CH_TIMEOUT_MODE_SENSE); 1607 1608 error = cam_periph_runccb(ccb, cherror, /*cam_flags*/ CAM_RETRY_SELTO, 1609 /* sense_flags */ SF_RETRY_UA | SF_NO_PRINT, 1610 softc->device_stats); 1611 1612 if (error) { 1613 if (dbd) { 1614 struct scsi_mode_sense_6 *sms; 1615 1616 sms = (struct scsi_mode_sense_6 *) 1617 ccb->csio.cdb_io.cdb_bytes; 1618 1619 sms->byte2 &= ~SMS_DBD; 1620 error = cam_periph_runccb(ccb, cherror, 1621 /*cam_flags*/ CAM_RETRY_SELTO, 1622 /*sense_flags*/ SF_RETRY_UA, 1623 softc->device_stats); 1624 } else { 1625 /* 1626 * Since we disabled sense printing above, print 1627 * out the sense here since we got an error. 1628 */ 1629 scsi_sense_print(&ccb->csio); 1630 } 1631 1632 if (error) { 1633 xpt_print(periph->path, 1634 "chgetparams: error getting device " 1635 "capabilities page\n"); 1636 xpt_release_ccb(ccb); 1637 free(mode_buffer, M_SCSICH); 1638 return(error); 1639 } 1640 } 1641 1642 xpt_release_ccb(ccb); 1643 1644 cap = (struct page_device_capabilities *) 1645 find_mode_page_6((struct scsi_mode_header_6 *)mode_buffer); 1646 1647 bzero(softc->sc_movemask, sizeof(softc->sc_movemask)); 1648 bzero(softc->sc_exchangemask, sizeof(softc->sc_exchangemask)); 1649 moves = cap->move_from; 1650 exchanges = cap->exchange_with; 1651 for (from = CHET_MT; from <= CHET_MAX; ++from) { 1652 softc->sc_movemask[from] = moves[from]; 1653 softc->sc_exchangemask[from] = exchanges[from]; 1654 } 1655 1656 free(mode_buffer, M_SCSICH); 1657 1658 return(error); 1659 } 1660 1661 static int 1662 chscsiversion(struct cam_periph *periph) 1663 { 1664 struct scsi_inquiry_data *inq_data; 1665 struct ccb_getdev *cgd; 1666 int dev_scsi_version; 1667 struct cam_sim *sim; 1668 1669 sim = xpt_path_sim(periph->path); 1670 mtx_assert(sim->mtx, MA_OWNED); 1671 if ((cgd = (struct ccb_getdev *)xpt_alloc_ccb_nowait()) == NULL) 1672 return (-1); 1673 /* 1674 * Get the device information. 1675 */ 1676 xpt_setup_ccb(&cgd->ccb_h, 1677 periph->path, 1678 CAM_PRIORITY_NORMAL); 1679 cgd->ccb_h.func_code = XPT_GDEV_TYPE; 1680 xpt_action((union ccb *)cgd); 1681 1682 if (cgd->ccb_h.status != CAM_REQ_CMP) { 1683 xpt_free_ccb((union ccb *)cgd); 1684 return -1; 1685 } 1686 1687 inq_data = &cgd->inq_data; 1688 dev_scsi_version = inq_data->version; 1689 xpt_free_ccb((union ccb *)cgd); 1690 1691 return dev_scsi_version; 1692 } 1693 1694 void 1695 scsi_move_medium(struct ccb_scsiio *csio, u_int32_t retries, 1696 void (*cbfcnp)(struct cam_periph *, union ccb *), 1697 u_int8_t tag_action, u_int32_t tea, u_int32_t src, 1698 u_int32_t dst, int invert, u_int8_t sense_len, 1699 u_int32_t timeout) 1700 { 1701 struct scsi_move_medium *scsi_cmd; 1702 1703 scsi_cmd = (struct scsi_move_medium *)&csio->cdb_io.cdb_bytes; 1704 bzero(scsi_cmd, sizeof(*scsi_cmd)); 1705 1706 scsi_cmd->opcode = MOVE_MEDIUM; 1707 1708 scsi_ulto2b(tea, scsi_cmd->tea); 1709 scsi_ulto2b(src, scsi_cmd->src); 1710 scsi_ulto2b(dst, scsi_cmd->dst); 1711 1712 if (invert) 1713 scsi_cmd->invert |= MOVE_MEDIUM_INVERT; 1714 1715 cam_fill_csio(csio, 1716 retries, 1717 cbfcnp, 1718 /*flags*/ CAM_DIR_NONE, 1719 tag_action, 1720 /*data_ptr*/ NULL, 1721 /*dxfer_len*/ 0, 1722 sense_len, 1723 sizeof(*scsi_cmd), 1724 timeout); 1725 } 1726 1727 void 1728 scsi_exchange_medium(struct ccb_scsiio *csio, u_int32_t retries, 1729 void (*cbfcnp)(struct cam_periph *, union ccb *), 1730 u_int8_t tag_action, u_int32_t tea, u_int32_t src, 1731 u_int32_t dst1, u_int32_t dst2, int invert1, 1732 int invert2, u_int8_t sense_len, u_int32_t timeout) 1733 { 1734 struct scsi_exchange_medium *scsi_cmd; 1735 1736 scsi_cmd = (struct scsi_exchange_medium *)&csio->cdb_io.cdb_bytes; 1737 bzero(scsi_cmd, sizeof(*scsi_cmd)); 1738 1739 scsi_cmd->opcode = EXCHANGE_MEDIUM; 1740 1741 scsi_ulto2b(tea, scsi_cmd->tea); 1742 scsi_ulto2b(src, scsi_cmd->src); 1743 scsi_ulto2b(dst1, scsi_cmd->fdst); 1744 scsi_ulto2b(dst2, scsi_cmd->sdst); 1745 1746 if (invert1) 1747 scsi_cmd->invert |= EXCHANGE_MEDIUM_INV1; 1748 1749 if (invert2) 1750 scsi_cmd->invert |= EXCHANGE_MEDIUM_INV2; 1751 1752 cam_fill_csio(csio, 1753 retries, 1754 cbfcnp, 1755 /*flags*/ CAM_DIR_NONE, 1756 tag_action, 1757 /*data_ptr*/ NULL, 1758 /*dxfer_len*/ 0, 1759 sense_len, 1760 sizeof(*scsi_cmd), 1761 timeout); 1762 } 1763 1764 void 1765 scsi_position_to_element(struct ccb_scsiio *csio, u_int32_t retries, 1766 void (*cbfcnp)(struct cam_periph *, union ccb *), 1767 u_int8_t tag_action, u_int32_t tea, u_int32_t dst, 1768 int invert, u_int8_t sense_len, u_int32_t timeout) 1769 { 1770 struct scsi_position_to_element *scsi_cmd; 1771 1772 scsi_cmd = (struct scsi_position_to_element *)&csio->cdb_io.cdb_bytes; 1773 bzero(scsi_cmd, sizeof(*scsi_cmd)); 1774 1775 scsi_cmd->opcode = POSITION_TO_ELEMENT; 1776 1777 scsi_ulto2b(tea, scsi_cmd->tea); 1778 scsi_ulto2b(dst, scsi_cmd->dst); 1779 1780 if (invert) 1781 scsi_cmd->invert |= POSITION_TO_ELEMENT_INVERT; 1782 1783 cam_fill_csio(csio, 1784 retries, 1785 cbfcnp, 1786 /*flags*/ CAM_DIR_NONE, 1787 tag_action, 1788 /*data_ptr*/ NULL, 1789 /*dxfer_len*/ 0, 1790 sense_len, 1791 sizeof(*scsi_cmd), 1792 timeout); 1793 } 1794 1795 void 1796 scsi_read_element_status(struct ccb_scsiio *csio, u_int32_t retries, 1797 void (*cbfcnp)(struct cam_periph *, union ccb *), 1798 u_int8_t tag_action, int voltag, u_int32_t sea, 1799 int curdata, int dvcid, 1800 u_int32_t count, u_int8_t *data_ptr, 1801 u_int32_t dxfer_len, u_int8_t sense_len, 1802 u_int32_t timeout) 1803 { 1804 struct scsi_read_element_status *scsi_cmd; 1805 1806 scsi_cmd = (struct scsi_read_element_status *)&csio->cdb_io.cdb_bytes; 1807 bzero(scsi_cmd, sizeof(*scsi_cmd)); 1808 1809 scsi_cmd->opcode = READ_ELEMENT_STATUS; 1810 1811 scsi_ulto2b(sea, scsi_cmd->sea); 1812 scsi_ulto2b(count, scsi_cmd->count); 1813 scsi_ulto3b(dxfer_len, scsi_cmd->len); 1814 if (dvcid) 1815 scsi_cmd->flags |= READ_ELEMENT_STATUS_DVCID; 1816 if (curdata) 1817 scsi_cmd->flags |= READ_ELEMENT_STATUS_CURDATA; 1818 1819 if (voltag) 1820 scsi_cmd->byte2 |= READ_ELEMENT_STATUS_VOLTAG; 1821 1822 cam_fill_csio(csio, 1823 retries, 1824 cbfcnp, 1825 /*flags*/ CAM_DIR_IN, 1826 tag_action, 1827 data_ptr, 1828 dxfer_len, 1829 sense_len, 1830 sizeof(*scsi_cmd), 1831 timeout); 1832 } 1833 1834 void 1835 scsi_initialize_element_status(struct ccb_scsiio *csio, u_int32_t retries, 1836 void (*cbfcnp)(struct cam_periph *, union ccb *), 1837 u_int8_t tag_action, u_int8_t sense_len, 1838 u_int32_t timeout) 1839 { 1840 struct scsi_initialize_element_status *scsi_cmd; 1841 1842 scsi_cmd = (struct scsi_initialize_element_status *) 1843 &csio->cdb_io.cdb_bytes; 1844 bzero(scsi_cmd, sizeof(*scsi_cmd)); 1845 1846 scsi_cmd->opcode = INITIALIZE_ELEMENT_STATUS; 1847 1848 cam_fill_csio(csio, 1849 retries, 1850 cbfcnp, 1851 /*flags*/ CAM_DIR_NONE, 1852 tag_action, 1853 /* data_ptr */ NULL, 1854 /* dxfer_len */ 0, 1855 sense_len, 1856 sizeof(*scsi_cmd), 1857 timeout); 1858 } 1859 1860 void 1861 scsi_send_volume_tag(struct ccb_scsiio *csio, u_int32_t retries, 1862 void (*cbfcnp)(struct cam_periph *, union ccb *), 1863 u_int8_t tag_action, 1864 u_int16_t element_address, 1865 u_int8_t send_action_code, 1866 struct scsi_send_volume_tag_parameters *parameters, 1867 u_int8_t sense_len, u_int32_t timeout) 1868 { 1869 struct scsi_send_volume_tag *scsi_cmd; 1870 1871 scsi_cmd = (struct scsi_send_volume_tag *) &csio->cdb_io.cdb_bytes; 1872 bzero(scsi_cmd, sizeof(*scsi_cmd)); 1873 1874 scsi_cmd->opcode = SEND_VOLUME_TAG; 1875 scsi_ulto2b(element_address, scsi_cmd->ea); 1876 scsi_cmd->sac = send_action_code; 1877 scsi_ulto2b(sizeof(*parameters), scsi_cmd->pll); 1878 1879 cam_fill_csio(csio, 1880 retries, 1881 cbfcnp, 1882 /*flags*/ CAM_DIR_OUT, 1883 tag_action, 1884 /* data_ptr */ (u_int8_t *) parameters, 1885 sizeof(*parameters), 1886 sense_len, 1887 sizeof(*scsi_cmd), 1888 timeout); 1889 } 1890