1 /*- 2 * Common functions for CAM "type" (peripheral) drivers. 3 * 4 * Copyright (c) 1997, 1998 Justin T. Gibbs. 5 * Copyright (c) 1997, 1998, 1999, 2000 Kenneth D. Merry. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions, and the following disclaimer, 13 * without modification, immediately at the beginning of the file. 14 * 2. The name of the author may not be used to endorse or promote products 15 * derived from this software without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR 21 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30 #include <sys/cdefs.h> 31 __FBSDID("$FreeBSD$"); 32 33 #include <sys/param.h> 34 #include <sys/systm.h> 35 #include <sys/types.h> 36 #include <sys/malloc.h> 37 #include <sys/kernel.h> 38 #include <sys/bio.h> 39 #include <sys/lock.h> 40 #include <sys/mutex.h> 41 #include <sys/buf.h> 42 #include <sys/proc.h> 43 #include <sys/devicestat.h> 44 #include <sys/bus.h> 45 #include <sys/sbuf.h> 46 #include <vm/vm.h> 47 #include <vm/vm_extern.h> 48 49 #include <cam/cam.h> 50 #include <cam/cam_ccb.h> 51 #include <cam/cam_queue.h> 52 #include <cam/cam_xpt_periph.h> 53 #include <cam/cam_periph.h> 54 #include <cam/cam_debug.h> 55 #include <cam/cam_sim.h> 56 57 #include <cam/scsi/scsi_all.h> 58 #include <cam/scsi/scsi_message.h> 59 #include <cam/scsi/scsi_pass.h> 60 61 static u_int camperiphnextunit(struct periph_driver *p_drv, 62 u_int newunit, int wired, 63 path_id_t pathid, target_id_t target, 64 lun_id_t lun); 65 static u_int camperiphunit(struct periph_driver *p_drv, 66 path_id_t pathid, target_id_t target, 67 lun_id_t lun); 68 static void camperiphdone(struct cam_periph *periph, 69 union ccb *done_ccb); 70 static void camperiphfree(struct cam_periph *periph); 71 static int camperiphscsistatuserror(union ccb *ccb, 72 union ccb **orig_ccb, 73 cam_flags camflags, 74 u_int32_t sense_flags, 75 int *openings, 76 u_int32_t *relsim_flags, 77 u_int32_t *timeout, 78 u_int32_t *action, 79 const char **action_string); 80 static int camperiphscsisenseerror(union ccb *ccb, 81 union ccb **orig_ccb, 82 cam_flags camflags, 83 u_int32_t sense_flags, 84 int *openings, 85 u_int32_t *relsim_flags, 86 u_int32_t *timeout, 87 u_int32_t *action, 88 const char **action_string); 89 static void cam_periph_devctl_notify(union ccb *ccb); 90 91 static int nperiph_drivers; 92 static int initialized = 0; 93 struct periph_driver **periph_drivers; 94 95 static MALLOC_DEFINE(M_CAMPERIPH, "CAM periph", "CAM peripheral buffers"); 96 97 static int periph_selto_delay = 1000; 98 TUNABLE_INT("kern.cam.periph_selto_delay", &periph_selto_delay); 99 static int periph_noresrc_delay = 500; 100 TUNABLE_INT("kern.cam.periph_noresrc_delay", &periph_noresrc_delay); 101 static int periph_busy_delay = 500; 102 TUNABLE_INT("kern.cam.periph_busy_delay", &periph_busy_delay); 103 104 105 void 106 periphdriver_register(void *data) 107 { 108 struct periph_driver *drv = (struct periph_driver *)data; 109 struct periph_driver **newdrivers, **old; 110 int ndrivers; 111 112 again: 113 ndrivers = nperiph_drivers + 2; 114 newdrivers = malloc(sizeof(*newdrivers) * ndrivers, M_CAMPERIPH, 115 M_WAITOK); 116 xpt_lock_buses(); 117 if (ndrivers != nperiph_drivers + 2) { 118 /* 119 * Lost race against itself; go around. 120 */ 121 xpt_unlock_buses(); 122 free(newdrivers, M_CAMPERIPH); 123 goto again; 124 } 125 if (periph_drivers) 126 bcopy(periph_drivers, newdrivers, 127 sizeof(*newdrivers) * nperiph_drivers); 128 newdrivers[nperiph_drivers] = drv; 129 newdrivers[nperiph_drivers + 1] = NULL; 130 old = periph_drivers; 131 periph_drivers = newdrivers; 132 nperiph_drivers++; 133 xpt_unlock_buses(); 134 if (old) 135 free(old, M_CAMPERIPH); 136 /* If driver marked as early or it is late now, initialize it. */ 137 if (((drv->flags & CAM_PERIPH_DRV_EARLY) != 0 && initialized > 0) || 138 initialized > 1) 139 (*drv->init)(); 140 } 141 142 int 143 periphdriver_unregister(void *data) 144 { 145 struct periph_driver *drv = (struct periph_driver *)data; 146 int error, n; 147 148 /* If driver marked as early or it is late now, deinitialize it. */ 149 if (((drv->flags & CAM_PERIPH_DRV_EARLY) != 0 && initialized > 0) || 150 initialized > 1) { 151 if (drv->deinit == NULL) { 152 printf("CAM periph driver '%s' doesn't have deinit.\n", 153 drv->driver_name); 154 return (EOPNOTSUPP); 155 } 156 error = drv->deinit(); 157 if (error != 0) 158 return (error); 159 } 160 161 xpt_lock_buses(); 162 for (n = 0; n < nperiph_drivers && periph_drivers[n] != drv; n++) 163 ; 164 KASSERT(n < nperiph_drivers, 165 ("Periph driver '%s' was not registered", drv->driver_name)); 166 for (; n + 1 < nperiph_drivers; n++) 167 periph_drivers[n] = periph_drivers[n + 1]; 168 periph_drivers[n + 1] = NULL; 169 nperiph_drivers--; 170 xpt_unlock_buses(); 171 return (0); 172 } 173 174 void 175 periphdriver_init(int level) 176 { 177 int i, early; 178 179 initialized = max(initialized, level); 180 for (i = 0; periph_drivers[i] != NULL; i++) { 181 early = (periph_drivers[i]->flags & CAM_PERIPH_DRV_EARLY) ? 1 : 2; 182 if (early == initialized) 183 (*periph_drivers[i]->init)(); 184 } 185 } 186 187 cam_status 188 cam_periph_alloc(periph_ctor_t *periph_ctor, 189 periph_oninv_t *periph_oninvalidate, 190 periph_dtor_t *periph_dtor, periph_start_t *periph_start, 191 char *name, cam_periph_type type, struct cam_path *path, 192 ac_callback_t *ac_callback, ac_code code, void *arg) 193 { 194 struct periph_driver **p_drv; 195 struct cam_sim *sim; 196 struct cam_periph *periph; 197 struct cam_periph *cur_periph; 198 path_id_t path_id; 199 target_id_t target_id; 200 lun_id_t lun_id; 201 cam_status status; 202 u_int init_level; 203 204 init_level = 0; 205 /* 206 * Handle Hot-Plug scenarios. If there is already a peripheral 207 * of our type assigned to this path, we are likely waiting for 208 * final close on an old, invalidated, peripheral. If this is 209 * the case, queue up a deferred call to the peripheral's async 210 * handler. If it looks like a mistaken re-allocation, complain. 211 */ 212 if ((periph = cam_periph_find(path, name)) != NULL) { 213 214 if ((periph->flags & CAM_PERIPH_INVALID) != 0 215 && (periph->flags & CAM_PERIPH_NEW_DEV_FOUND) == 0) { 216 periph->flags |= CAM_PERIPH_NEW_DEV_FOUND; 217 periph->deferred_callback = ac_callback; 218 periph->deferred_ac = code; 219 return (CAM_REQ_INPROG); 220 } else { 221 printf("cam_periph_alloc: attempt to re-allocate " 222 "valid device %s%d rejected flags %#x " 223 "refcount %d\n", periph->periph_name, 224 periph->unit_number, periph->flags, 225 periph->refcount); 226 } 227 return (CAM_REQ_INVALID); 228 } 229 230 periph = (struct cam_periph *)malloc(sizeof(*periph), M_CAMPERIPH, 231 M_NOWAIT|M_ZERO); 232 233 if (periph == NULL) 234 return (CAM_RESRC_UNAVAIL); 235 236 init_level++; 237 238 239 sim = xpt_path_sim(path); 240 path_id = xpt_path_path_id(path); 241 target_id = xpt_path_target_id(path); 242 lun_id = xpt_path_lun_id(path); 243 periph->periph_start = periph_start; 244 periph->periph_dtor = periph_dtor; 245 periph->periph_oninval = periph_oninvalidate; 246 periph->type = type; 247 periph->periph_name = name; 248 periph->scheduled_priority = CAM_PRIORITY_NONE; 249 periph->immediate_priority = CAM_PRIORITY_NONE; 250 periph->refcount = 1; /* Dropped by invalidation. */ 251 periph->sim = sim; 252 SLIST_INIT(&periph->ccb_list); 253 status = xpt_create_path(&path, periph, path_id, target_id, lun_id); 254 if (status != CAM_REQ_CMP) 255 goto failure; 256 periph->path = path; 257 258 xpt_lock_buses(); 259 for (p_drv = periph_drivers; *p_drv != NULL; p_drv++) { 260 if (strcmp((*p_drv)->driver_name, name) == 0) 261 break; 262 } 263 if (*p_drv == NULL) { 264 printf("cam_periph_alloc: invalid periph name '%s'\n", name); 265 xpt_unlock_buses(); 266 xpt_free_path(periph->path); 267 free(periph, M_CAMPERIPH); 268 return (CAM_REQ_INVALID); 269 } 270 periph->unit_number = camperiphunit(*p_drv, path_id, target_id, lun_id); 271 cur_periph = TAILQ_FIRST(&(*p_drv)->units); 272 while (cur_periph != NULL 273 && cur_periph->unit_number < periph->unit_number) 274 cur_periph = TAILQ_NEXT(cur_periph, unit_links); 275 if (cur_periph != NULL) { 276 KASSERT(cur_periph->unit_number != periph->unit_number, ("duplicate units on periph list")); 277 TAILQ_INSERT_BEFORE(cur_periph, periph, unit_links); 278 } else { 279 TAILQ_INSERT_TAIL(&(*p_drv)->units, periph, unit_links); 280 (*p_drv)->generation++; 281 } 282 xpt_unlock_buses(); 283 284 init_level++; 285 286 status = xpt_add_periph(periph); 287 if (status != CAM_REQ_CMP) 288 goto failure; 289 290 init_level++; 291 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("Periph created\n")); 292 293 status = periph_ctor(periph, arg); 294 295 if (status == CAM_REQ_CMP) 296 init_level++; 297 298 failure: 299 switch (init_level) { 300 case 4: 301 /* Initialized successfully */ 302 break; 303 case 3: 304 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("Periph destroyed\n")); 305 xpt_remove_periph(periph); 306 /* FALLTHROUGH */ 307 case 2: 308 xpt_lock_buses(); 309 TAILQ_REMOVE(&(*p_drv)->units, periph, unit_links); 310 xpt_unlock_buses(); 311 xpt_free_path(periph->path); 312 /* FALLTHROUGH */ 313 case 1: 314 free(periph, M_CAMPERIPH); 315 /* FALLTHROUGH */ 316 case 0: 317 /* No cleanup to perform. */ 318 break; 319 default: 320 panic("%s: Unknown init level", __func__); 321 } 322 return(status); 323 } 324 325 /* 326 * Find a peripheral structure with the specified path, target, lun, 327 * and (optionally) type. If the name is NULL, this function will return 328 * the first peripheral driver that matches the specified path. 329 */ 330 struct cam_periph * 331 cam_periph_find(struct cam_path *path, char *name) 332 { 333 struct periph_driver **p_drv; 334 struct cam_periph *periph; 335 336 xpt_lock_buses(); 337 for (p_drv = periph_drivers; *p_drv != NULL; p_drv++) { 338 339 if (name != NULL && (strcmp((*p_drv)->driver_name, name) != 0)) 340 continue; 341 342 TAILQ_FOREACH(periph, &(*p_drv)->units, unit_links) { 343 if (xpt_path_comp(periph->path, path) == 0) { 344 xpt_unlock_buses(); 345 cam_periph_assert(periph, MA_OWNED); 346 return(periph); 347 } 348 } 349 if (name != NULL) { 350 xpt_unlock_buses(); 351 return(NULL); 352 } 353 } 354 xpt_unlock_buses(); 355 return(NULL); 356 } 357 358 /* 359 * Find peripheral driver instances attached to the specified path. 360 */ 361 int 362 cam_periph_list(struct cam_path *path, struct sbuf *sb) 363 { 364 struct sbuf local_sb; 365 struct periph_driver **p_drv; 366 struct cam_periph *periph; 367 int count; 368 int sbuf_alloc_len; 369 370 sbuf_alloc_len = 16; 371 retry: 372 sbuf_new(&local_sb, NULL, sbuf_alloc_len, SBUF_FIXEDLEN); 373 count = 0; 374 xpt_lock_buses(); 375 for (p_drv = periph_drivers; *p_drv != NULL; p_drv++) { 376 377 TAILQ_FOREACH(periph, &(*p_drv)->units, unit_links) { 378 if (xpt_path_comp(periph->path, path) != 0) 379 continue; 380 381 if (sbuf_len(&local_sb) != 0) 382 sbuf_cat(&local_sb, ","); 383 384 sbuf_printf(&local_sb, "%s%d", periph->periph_name, 385 periph->unit_number); 386 387 if (sbuf_error(&local_sb) == ENOMEM) { 388 sbuf_alloc_len *= 2; 389 xpt_unlock_buses(); 390 sbuf_delete(&local_sb); 391 goto retry; 392 } 393 count++; 394 } 395 } 396 xpt_unlock_buses(); 397 sbuf_finish(&local_sb); 398 sbuf_cpy(sb, sbuf_data(&local_sb)); 399 sbuf_delete(&local_sb); 400 return (count); 401 } 402 403 cam_status 404 cam_periph_acquire(struct cam_periph *periph) 405 { 406 cam_status status; 407 408 status = CAM_REQ_CMP_ERR; 409 if (periph == NULL) 410 return (status); 411 412 xpt_lock_buses(); 413 if ((periph->flags & CAM_PERIPH_INVALID) == 0) { 414 periph->refcount++; 415 status = CAM_REQ_CMP; 416 } 417 xpt_unlock_buses(); 418 419 return (status); 420 } 421 422 void 423 cam_periph_doacquire(struct cam_periph *periph) 424 { 425 426 xpt_lock_buses(); 427 KASSERT(periph->refcount >= 1, 428 ("cam_periph_doacquire() with refcount == %d", periph->refcount)); 429 periph->refcount++; 430 xpt_unlock_buses(); 431 } 432 433 void 434 cam_periph_release_locked_buses(struct cam_periph *periph) 435 { 436 437 cam_periph_assert(periph, MA_OWNED); 438 KASSERT(periph->refcount >= 1, ("periph->refcount >= 1")); 439 if (--periph->refcount == 0) 440 camperiphfree(periph); 441 } 442 443 void 444 cam_periph_release_locked(struct cam_periph *periph) 445 { 446 447 if (periph == NULL) 448 return; 449 450 xpt_lock_buses(); 451 cam_periph_release_locked_buses(periph); 452 xpt_unlock_buses(); 453 } 454 455 void 456 cam_periph_release(struct cam_periph *periph) 457 { 458 struct mtx *mtx; 459 460 if (periph == NULL) 461 return; 462 463 cam_periph_assert(periph, MA_NOTOWNED); 464 mtx = cam_periph_mtx(periph); 465 mtx_lock(mtx); 466 cam_periph_release_locked(periph); 467 mtx_unlock(mtx); 468 } 469 470 int 471 cam_periph_hold(struct cam_periph *periph, int priority) 472 { 473 int error; 474 475 /* 476 * Increment the reference count on the peripheral 477 * while we wait for our lock attempt to succeed 478 * to ensure the peripheral doesn't disappear out 479 * from user us while we sleep. 480 */ 481 482 if (cam_periph_acquire(periph) != CAM_REQ_CMP) 483 return (ENXIO); 484 485 cam_periph_assert(periph, MA_OWNED); 486 while ((periph->flags & CAM_PERIPH_LOCKED) != 0) { 487 periph->flags |= CAM_PERIPH_LOCK_WANTED; 488 if ((error = cam_periph_sleep(periph, periph, priority, 489 "caplck", 0)) != 0) { 490 cam_periph_release_locked(periph); 491 return (error); 492 } 493 if (periph->flags & CAM_PERIPH_INVALID) { 494 cam_periph_release_locked(periph); 495 return (ENXIO); 496 } 497 } 498 499 periph->flags |= CAM_PERIPH_LOCKED; 500 return (0); 501 } 502 503 void 504 cam_periph_unhold(struct cam_periph *periph) 505 { 506 507 cam_periph_assert(periph, MA_OWNED); 508 509 periph->flags &= ~CAM_PERIPH_LOCKED; 510 if ((periph->flags & CAM_PERIPH_LOCK_WANTED) != 0) { 511 periph->flags &= ~CAM_PERIPH_LOCK_WANTED; 512 wakeup(periph); 513 } 514 515 cam_periph_release_locked(periph); 516 } 517 518 /* 519 * Look for the next unit number that is not currently in use for this 520 * peripheral type starting at "newunit". Also exclude unit numbers that 521 * are reserved by for future "hardwiring" unless we already know that this 522 * is a potential wired device. Only assume that the device is "wired" the 523 * first time through the loop since after that we'll be looking at unit 524 * numbers that did not match a wiring entry. 525 */ 526 static u_int 527 camperiphnextunit(struct periph_driver *p_drv, u_int newunit, int wired, 528 path_id_t pathid, target_id_t target, lun_id_t lun) 529 { 530 struct cam_periph *periph; 531 char *periph_name; 532 int i, val, dunit, r; 533 const char *dname, *strval; 534 535 periph_name = p_drv->driver_name; 536 for (;;newunit++) { 537 538 for (periph = TAILQ_FIRST(&p_drv->units); 539 periph != NULL && periph->unit_number != newunit; 540 periph = TAILQ_NEXT(periph, unit_links)) 541 ; 542 543 if (periph != NULL && periph->unit_number == newunit) { 544 if (wired != 0) { 545 xpt_print(periph->path, "Duplicate Wired " 546 "Device entry!\n"); 547 xpt_print(periph->path, "Second device (%s " 548 "device at scbus%d target %d lun %d) will " 549 "not be wired\n", periph_name, pathid, 550 target, lun); 551 wired = 0; 552 } 553 continue; 554 } 555 if (wired) 556 break; 557 558 /* 559 * Don't match entries like "da 4" as a wired down 560 * device, but do match entries like "da 4 target 5" 561 * or even "da 4 scbus 1". 562 */ 563 i = 0; 564 dname = periph_name; 565 for (;;) { 566 r = resource_find_dev(&i, dname, &dunit, NULL, NULL); 567 if (r != 0) 568 break; 569 /* if no "target" and no specific scbus, skip */ 570 if (resource_int_value(dname, dunit, "target", &val) && 571 (resource_string_value(dname, dunit, "at",&strval)|| 572 strcmp(strval, "scbus") == 0)) 573 continue; 574 if (newunit == dunit) 575 break; 576 } 577 if (r != 0) 578 break; 579 } 580 return (newunit); 581 } 582 583 static u_int 584 camperiphunit(struct periph_driver *p_drv, path_id_t pathid, 585 target_id_t target, lun_id_t lun) 586 { 587 u_int unit; 588 int wired, i, val, dunit; 589 const char *dname, *strval; 590 char pathbuf[32], *periph_name; 591 592 periph_name = p_drv->driver_name; 593 snprintf(pathbuf, sizeof(pathbuf), "scbus%d", pathid); 594 unit = 0; 595 i = 0; 596 dname = periph_name; 597 for (wired = 0; resource_find_dev(&i, dname, &dunit, NULL, NULL) == 0; 598 wired = 0) { 599 if (resource_string_value(dname, dunit, "at", &strval) == 0) { 600 if (strcmp(strval, pathbuf) != 0) 601 continue; 602 wired++; 603 } 604 if (resource_int_value(dname, dunit, "target", &val) == 0) { 605 if (val != target) 606 continue; 607 wired++; 608 } 609 if (resource_int_value(dname, dunit, "lun", &val) == 0) { 610 if (val != lun) 611 continue; 612 wired++; 613 } 614 if (wired != 0) { 615 unit = dunit; 616 break; 617 } 618 } 619 620 /* 621 * Either start from 0 looking for the next unit or from 622 * the unit number given in the resource config. This way, 623 * if we have wildcard matches, we don't return the same 624 * unit number twice. 625 */ 626 unit = camperiphnextunit(p_drv, unit, wired, pathid, target, lun); 627 628 return (unit); 629 } 630 631 void 632 cam_periph_invalidate(struct cam_periph *periph) 633 { 634 635 cam_periph_assert(periph, MA_OWNED); 636 /* 637 * We only call this routine the first time a peripheral is 638 * invalidated. 639 */ 640 if ((periph->flags & CAM_PERIPH_INVALID) != 0) 641 return; 642 643 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("Periph invalidated\n")); 644 if ((periph->flags & CAM_PERIPH_ANNOUNCED) && !rebooting) 645 xpt_denounce_periph(periph); 646 periph->flags |= CAM_PERIPH_INVALID; 647 periph->flags &= ~CAM_PERIPH_NEW_DEV_FOUND; 648 if (periph->periph_oninval != NULL) 649 periph->periph_oninval(periph); 650 cam_periph_release_locked(periph); 651 } 652 653 static void 654 camperiphfree(struct cam_periph *periph) 655 { 656 struct periph_driver **p_drv; 657 658 cam_periph_assert(periph, MA_OWNED); 659 KASSERT(periph->periph_allocating == 0, ("%s%d: freed while allocating", 660 periph->periph_name, periph->unit_number)); 661 for (p_drv = periph_drivers; *p_drv != NULL; p_drv++) { 662 if (strcmp((*p_drv)->driver_name, periph->periph_name) == 0) 663 break; 664 } 665 if (*p_drv == NULL) { 666 printf("camperiphfree: attempt to free non-existant periph\n"); 667 return; 668 } 669 670 /* 671 * We need to set this flag before dropping the topology lock, to 672 * let anyone who is traversing the list that this peripheral is 673 * about to be freed, and there will be no more reference count 674 * checks. 675 */ 676 periph->flags |= CAM_PERIPH_FREE; 677 678 /* 679 * The peripheral destructor semantics dictate calling with only the 680 * SIM mutex held. Since it might sleep, it should not be called 681 * with the topology lock held. 682 */ 683 xpt_unlock_buses(); 684 685 /* 686 * We need to call the peripheral destructor prior to removing the 687 * peripheral from the list. Otherwise, we risk running into a 688 * scenario where the peripheral unit number may get reused 689 * (because it has been removed from the list), but some resources 690 * used by the peripheral are still hanging around. In particular, 691 * the devfs nodes used by some peripherals like the pass(4) driver 692 * aren't fully cleaned up until the destructor is run. If the 693 * unit number is reused before the devfs instance is fully gone, 694 * devfs will panic. 695 */ 696 if (periph->periph_dtor != NULL) 697 periph->periph_dtor(periph); 698 699 /* 700 * The peripheral list is protected by the topology lock. 701 */ 702 xpt_lock_buses(); 703 704 TAILQ_REMOVE(&(*p_drv)->units, periph, unit_links); 705 (*p_drv)->generation++; 706 707 xpt_remove_periph(periph); 708 709 xpt_unlock_buses(); 710 if ((periph->flags & CAM_PERIPH_ANNOUNCED) && !rebooting) 711 xpt_print(periph->path, "Periph destroyed\n"); 712 else 713 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("Periph destroyed\n")); 714 715 if (periph->flags & CAM_PERIPH_NEW_DEV_FOUND) { 716 union ccb ccb; 717 void *arg; 718 719 switch (periph->deferred_ac) { 720 case AC_FOUND_DEVICE: 721 ccb.ccb_h.func_code = XPT_GDEV_TYPE; 722 xpt_setup_ccb(&ccb.ccb_h, periph->path, CAM_PRIORITY_NORMAL); 723 xpt_action(&ccb); 724 arg = &ccb; 725 break; 726 case AC_PATH_REGISTERED: 727 ccb.ccb_h.func_code = XPT_PATH_INQ; 728 xpt_setup_ccb(&ccb.ccb_h, periph->path, CAM_PRIORITY_NORMAL); 729 xpt_action(&ccb); 730 arg = &ccb; 731 break; 732 default: 733 arg = NULL; 734 break; 735 } 736 periph->deferred_callback(NULL, periph->deferred_ac, 737 periph->path, arg); 738 } 739 xpt_free_path(periph->path); 740 free(periph, M_CAMPERIPH); 741 xpt_lock_buses(); 742 } 743 744 /* 745 * Map user virtual pointers into kernel virtual address space, so we can 746 * access the memory. This is now a generic function that centralizes most 747 * of the sanity checks on the data flags, if any. 748 * This also only works for up to MAXPHYS memory. Since we use 749 * buffers to map stuff in and out, we're limited to the buffer size. 750 */ 751 int 752 cam_periph_mapmem(union ccb *ccb, struct cam_periph_map_info *mapinfo, 753 u_int maxmap) 754 { 755 int numbufs, i, j; 756 int flags[CAM_PERIPH_MAXMAPS]; 757 u_int8_t **data_ptrs[CAM_PERIPH_MAXMAPS]; 758 u_int32_t lengths[CAM_PERIPH_MAXMAPS]; 759 u_int32_t dirs[CAM_PERIPH_MAXMAPS]; 760 761 if (maxmap == 0) 762 maxmap = DFLTPHYS; /* traditional default */ 763 else if (maxmap > MAXPHYS) 764 maxmap = MAXPHYS; /* for safety */ 765 switch(ccb->ccb_h.func_code) { 766 case XPT_DEV_MATCH: 767 if (ccb->cdm.match_buf_len == 0) { 768 printf("cam_periph_mapmem: invalid match buffer " 769 "length 0\n"); 770 return(EINVAL); 771 } 772 if (ccb->cdm.pattern_buf_len > 0) { 773 data_ptrs[0] = (u_int8_t **)&ccb->cdm.patterns; 774 lengths[0] = ccb->cdm.pattern_buf_len; 775 dirs[0] = CAM_DIR_OUT; 776 data_ptrs[1] = (u_int8_t **)&ccb->cdm.matches; 777 lengths[1] = ccb->cdm.match_buf_len; 778 dirs[1] = CAM_DIR_IN; 779 numbufs = 2; 780 } else { 781 data_ptrs[0] = (u_int8_t **)&ccb->cdm.matches; 782 lengths[0] = ccb->cdm.match_buf_len; 783 dirs[0] = CAM_DIR_IN; 784 numbufs = 1; 785 } 786 /* 787 * This request will not go to the hardware, no reason 788 * to be so strict. vmapbuf() is able to map up to MAXPHYS. 789 */ 790 maxmap = MAXPHYS; 791 break; 792 case XPT_SCSI_IO: 793 case XPT_CONT_TARGET_IO: 794 if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_NONE) 795 return(0); 796 if ((ccb->ccb_h.flags & CAM_DATA_MASK) != CAM_DATA_VADDR) 797 return (EINVAL); 798 data_ptrs[0] = &ccb->csio.data_ptr; 799 lengths[0] = ccb->csio.dxfer_len; 800 dirs[0] = ccb->ccb_h.flags & CAM_DIR_MASK; 801 numbufs = 1; 802 break; 803 case XPT_ATA_IO: 804 if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_NONE) 805 return(0); 806 if ((ccb->ccb_h.flags & CAM_DATA_MASK) != CAM_DATA_VADDR) 807 return (EINVAL); 808 data_ptrs[0] = &ccb->ataio.data_ptr; 809 lengths[0] = ccb->ataio.dxfer_len; 810 dirs[0] = ccb->ccb_h.flags & CAM_DIR_MASK; 811 numbufs = 1; 812 break; 813 case XPT_SMP_IO: 814 data_ptrs[0] = &ccb->smpio.smp_request; 815 lengths[0] = ccb->smpio.smp_request_len; 816 dirs[0] = CAM_DIR_OUT; 817 data_ptrs[1] = &ccb->smpio.smp_response; 818 lengths[1] = ccb->smpio.smp_response_len; 819 dirs[1] = CAM_DIR_IN; 820 numbufs = 2; 821 break; 822 case XPT_DEV_ADVINFO: 823 if (ccb->cdai.bufsiz == 0) 824 return (0); 825 826 data_ptrs[0] = (uint8_t **)&ccb->cdai.buf; 827 lengths[0] = ccb->cdai.bufsiz; 828 dirs[0] = CAM_DIR_IN; 829 numbufs = 1; 830 831 /* 832 * This request will not go to the hardware, no reason 833 * to be so strict. vmapbuf() is able to map up to MAXPHYS. 834 */ 835 maxmap = MAXPHYS; 836 break; 837 default: 838 return(EINVAL); 839 break; /* NOTREACHED */ 840 } 841 842 /* 843 * Check the transfer length and permissions first, so we don't 844 * have to unmap any previously mapped buffers. 845 */ 846 for (i = 0; i < numbufs; i++) { 847 848 flags[i] = 0; 849 850 /* 851 * The userland data pointer passed in may not be page 852 * aligned. vmapbuf() truncates the address to a page 853 * boundary, so if the address isn't page aligned, we'll 854 * need enough space for the given transfer length, plus 855 * whatever extra space is necessary to make it to the page 856 * boundary. 857 */ 858 if ((lengths[i] + 859 (((vm_offset_t)(*data_ptrs[i])) & PAGE_MASK)) > maxmap){ 860 printf("cam_periph_mapmem: attempt to map %lu bytes, " 861 "which is greater than %lu\n", 862 (long)(lengths[i] + 863 (((vm_offset_t)(*data_ptrs[i])) & PAGE_MASK)), 864 (u_long)maxmap); 865 return(E2BIG); 866 } 867 868 if (dirs[i] & CAM_DIR_OUT) { 869 flags[i] = BIO_WRITE; 870 } 871 872 if (dirs[i] & CAM_DIR_IN) { 873 flags[i] = BIO_READ; 874 } 875 876 } 877 878 /* 879 * This keeps the kernel stack of current thread from getting 880 * swapped. In low-memory situations where the kernel stack might 881 * otherwise get swapped out, this holds it and allows the thread 882 * to make progress and release the kernel mapped pages sooner. 883 * 884 * XXX KDM should I use P_NOSWAP instead? 885 */ 886 PHOLD(curproc); 887 888 for (i = 0; i < numbufs; i++) { 889 /* 890 * Get the buffer. 891 */ 892 mapinfo->bp[i] = getpbuf(NULL); 893 894 /* put our pointer in the data slot */ 895 mapinfo->bp[i]->b_data = *data_ptrs[i]; 896 897 /* save the user's data address */ 898 mapinfo->bp[i]->b_caller1 = *data_ptrs[i]; 899 900 /* set the transfer length, we know it's < MAXPHYS */ 901 mapinfo->bp[i]->b_bufsize = lengths[i]; 902 903 /* set the direction */ 904 mapinfo->bp[i]->b_iocmd = flags[i]; 905 906 /* 907 * Map the buffer into kernel memory. 908 * 909 * Note that useracc() alone is not a sufficient test. 910 * vmapbuf() can still fail due to a smaller file mapped 911 * into a larger area of VM, or if userland races against 912 * vmapbuf() after the useracc() check. 913 */ 914 if (vmapbuf(mapinfo->bp[i], 1) < 0) { 915 for (j = 0; j < i; ++j) { 916 *data_ptrs[j] = mapinfo->bp[j]->b_caller1; 917 vunmapbuf(mapinfo->bp[j]); 918 relpbuf(mapinfo->bp[j], NULL); 919 } 920 relpbuf(mapinfo->bp[i], NULL); 921 PRELE(curproc); 922 return(EACCES); 923 } 924 925 /* set our pointer to the new mapped area */ 926 *data_ptrs[i] = mapinfo->bp[i]->b_data; 927 928 mapinfo->num_bufs_used++; 929 } 930 931 /* 932 * Now that we've gotten this far, change ownership to the kernel 933 * of the buffers so that we don't run afoul of returning to user 934 * space with locks (on the buffer) held. 935 */ 936 for (i = 0; i < numbufs; i++) { 937 BUF_KERNPROC(mapinfo->bp[i]); 938 } 939 940 941 return(0); 942 } 943 944 /* 945 * Unmap memory segments mapped into kernel virtual address space by 946 * cam_periph_mapmem(). 947 */ 948 void 949 cam_periph_unmapmem(union ccb *ccb, struct cam_periph_map_info *mapinfo) 950 { 951 int numbufs, i; 952 u_int8_t **data_ptrs[CAM_PERIPH_MAXMAPS]; 953 954 if (mapinfo->num_bufs_used <= 0) { 955 /* nothing to free and the process wasn't held. */ 956 return; 957 } 958 959 switch (ccb->ccb_h.func_code) { 960 case XPT_DEV_MATCH: 961 numbufs = min(mapinfo->num_bufs_used, 2); 962 963 if (numbufs == 1) { 964 data_ptrs[0] = (u_int8_t **)&ccb->cdm.matches; 965 } else { 966 data_ptrs[0] = (u_int8_t **)&ccb->cdm.patterns; 967 data_ptrs[1] = (u_int8_t **)&ccb->cdm.matches; 968 } 969 break; 970 case XPT_SCSI_IO: 971 case XPT_CONT_TARGET_IO: 972 data_ptrs[0] = &ccb->csio.data_ptr; 973 numbufs = min(mapinfo->num_bufs_used, 1); 974 break; 975 case XPT_ATA_IO: 976 data_ptrs[0] = &ccb->ataio.data_ptr; 977 numbufs = min(mapinfo->num_bufs_used, 1); 978 break; 979 case XPT_SMP_IO: 980 numbufs = min(mapinfo->num_bufs_used, 2); 981 data_ptrs[0] = &ccb->smpio.smp_request; 982 data_ptrs[1] = &ccb->smpio.smp_response; 983 break; 984 case XPT_DEV_ADVINFO: 985 numbufs = min(mapinfo->num_bufs_used, 1); 986 data_ptrs[0] = (uint8_t **)&ccb->cdai.buf; 987 break; 988 default: 989 /* allow ourselves to be swapped once again */ 990 PRELE(curproc); 991 return; 992 break; /* NOTREACHED */ 993 } 994 995 for (i = 0; i < numbufs; i++) { 996 /* Set the user's pointer back to the original value */ 997 *data_ptrs[i] = mapinfo->bp[i]->b_caller1; 998 999 /* unmap the buffer */ 1000 vunmapbuf(mapinfo->bp[i]); 1001 1002 /* release the buffer */ 1003 relpbuf(mapinfo->bp[i], NULL); 1004 } 1005 1006 /* allow ourselves to be swapped once again */ 1007 PRELE(curproc); 1008 } 1009 1010 int 1011 cam_periph_ioctl(struct cam_periph *periph, u_long cmd, caddr_t addr, 1012 int (*error_routine)(union ccb *ccb, 1013 cam_flags camflags, 1014 u_int32_t sense_flags)) 1015 { 1016 union ccb *ccb; 1017 int error; 1018 int found; 1019 1020 error = found = 0; 1021 1022 switch(cmd){ 1023 case CAMGETPASSTHRU: 1024 ccb = cam_periph_getccb(periph, CAM_PRIORITY_NORMAL); 1025 xpt_setup_ccb(&ccb->ccb_h, 1026 ccb->ccb_h.path, 1027 CAM_PRIORITY_NORMAL); 1028 ccb->ccb_h.func_code = XPT_GDEVLIST; 1029 1030 /* 1031 * Basically, the point of this is that we go through 1032 * getting the list of devices, until we find a passthrough 1033 * device. In the current version of the CAM code, the 1034 * only way to determine what type of device we're dealing 1035 * with is by its name. 1036 */ 1037 while (found == 0) { 1038 ccb->cgdl.index = 0; 1039 ccb->cgdl.status = CAM_GDEVLIST_MORE_DEVS; 1040 while (ccb->cgdl.status == CAM_GDEVLIST_MORE_DEVS) { 1041 1042 /* we want the next device in the list */ 1043 xpt_action(ccb); 1044 if (strncmp(ccb->cgdl.periph_name, 1045 "pass", 4) == 0){ 1046 found = 1; 1047 break; 1048 } 1049 } 1050 if ((ccb->cgdl.status == CAM_GDEVLIST_LAST_DEVICE) && 1051 (found == 0)) { 1052 ccb->cgdl.periph_name[0] = '\0'; 1053 ccb->cgdl.unit_number = 0; 1054 break; 1055 } 1056 } 1057 1058 /* copy the result back out */ 1059 bcopy(ccb, addr, sizeof(union ccb)); 1060 1061 /* and release the ccb */ 1062 xpt_release_ccb(ccb); 1063 1064 break; 1065 default: 1066 error = ENOTTY; 1067 break; 1068 } 1069 return(error); 1070 } 1071 1072 static void 1073 cam_periph_done_panic(struct cam_periph *periph, union ccb *done_ccb) 1074 { 1075 1076 panic("%s: already done with ccb %p", __func__, done_ccb); 1077 } 1078 1079 static void 1080 cam_periph_done(struct cam_periph *periph, union ccb *done_ccb) 1081 { 1082 1083 /* Caller will release the CCB */ 1084 xpt_path_assert(done_ccb->ccb_h.path, MA_OWNED); 1085 done_ccb->ccb_h.cbfcnp = cam_periph_done_panic; 1086 wakeup(&done_ccb->ccb_h.cbfcnp); 1087 } 1088 1089 static void 1090 cam_periph_ccbwait(union ccb *ccb) 1091 { 1092 1093 if ((ccb->ccb_h.func_code & XPT_FC_QUEUED) != 0) { 1094 while (ccb->ccb_h.cbfcnp != cam_periph_done_panic) 1095 xpt_path_sleep(ccb->ccb_h.path, &ccb->ccb_h.cbfcnp, 1096 PRIBIO, "cbwait", 0); 1097 } 1098 KASSERT(ccb->ccb_h.pinfo.index == CAM_UNQUEUED_INDEX && 1099 (ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_INPROG, 1100 ("%s: proceeding with incomplete ccb: ccb=%p, func_code=%#x, " 1101 "status=%#x, index=%d", __func__, ccb, ccb->ccb_h.func_code, 1102 ccb->ccb_h.status, ccb->ccb_h.pinfo.index)); 1103 } 1104 1105 int 1106 cam_periph_runccb(union ccb *ccb, 1107 int (*error_routine)(union ccb *ccb, 1108 cam_flags camflags, 1109 u_int32_t sense_flags), 1110 cam_flags camflags, u_int32_t sense_flags, 1111 struct devstat *ds) 1112 { 1113 struct bintime *starttime; 1114 struct bintime ltime; 1115 int error; 1116 1117 starttime = NULL; 1118 xpt_path_assert(ccb->ccb_h.path, MA_OWNED); 1119 KASSERT((ccb->ccb_h.flags & CAM_UNLOCKED) == 0, 1120 ("%s: ccb=%p, func_code=%#x, flags=%#x", __func__, ccb, 1121 ccb->ccb_h.func_code, ccb->ccb_h.flags)); 1122 1123 /* 1124 * If the user has supplied a stats structure, and if we understand 1125 * this particular type of ccb, record the transaction start. 1126 */ 1127 if ((ds != NULL) && (ccb->ccb_h.func_code == XPT_SCSI_IO || 1128 ccb->ccb_h.func_code == XPT_ATA_IO)) { 1129 starttime = <ime; 1130 binuptime(starttime); 1131 devstat_start_transaction(ds, starttime); 1132 } 1133 1134 ccb->ccb_h.cbfcnp = cam_periph_done; 1135 xpt_action(ccb); 1136 1137 do { 1138 cam_periph_ccbwait(ccb); 1139 if ((ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP) 1140 error = 0; 1141 else if (error_routine != NULL) { 1142 ccb->ccb_h.cbfcnp = cam_periph_done; 1143 error = (*error_routine)(ccb, camflags, sense_flags); 1144 } else 1145 error = 0; 1146 1147 } while (error == ERESTART); 1148 1149 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) { 1150 cam_release_devq(ccb->ccb_h.path, 1151 /* relsim_flags */0, 1152 /* openings */0, 1153 /* timeout */0, 1154 /* getcount_only */ FALSE); 1155 ccb->ccb_h.status &= ~CAM_DEV_QFRZN; 1156 } 1157 1158 if (ds != NULL) { 1159 if (ccb->ccb_h.func_code == XPT_SCSI_IO) { 1160 devstat_end_transaction(ds, 1161 ccb->csio.dxfer_len - ccb->csio.resid, 1162 ccb->csio.tag_action & 0x3, 1163 ((ccb->ccb_h.flags & CAM_DIR_MASK) == 1164 CAM_DIR_NONE) ? DEVSTAT_NO_DATA : 1165 (ccb->ccb_h.flags & CAM_DIR_OUT) ? 1166 DEVSTAT_WRITE : 1167 DEVSTAT_READ, NULL, starttime); 1168 } else if (ccb->ccb_h.func_code == XPT_ATA_IO) { 1169 devstat_end_transaction(ds, 1170 ccb->ataio.dxfer_len - ccb->ataio.resid, 1171 0, /* Not used in ATA */ 1172 ((ccb->ccb_h.flags & CAM_DIR_MASK) == 1173 CAM_DIR_NONE) ? DEVSTAT_NO_DATA : 1174 (ccb->ccb_h.flags & CAM_DIR_OUT) ? 1175 DEVSTAT_WRITE : 1176 DEVSTAT_READ, NULL, starttime); 1177 } 1178 } 1179 1180 return(error); 1181 } 1182 1183 void 1184 cam_freeze_devq(struct cam_path *path) 1185 { 1186 struct ccb_hdr ccb_h; 1187 1188 CAM_DEBUG(path, CAM_DEBUG_TRACE, ("cam_freeze_devq\n")); 1189 xpt_setup_ccb(&ccb_h, path, /*priority*/1); 1190 ccb_h.func_code = XPT_NOOP; 1191 ccb_h.flags = CAM_DEV_QFREEZE; 1192 xpt_action((union ccb *)&ccb_h); 1193 } 1194 1195 u_int32_t 1196 cam_release_devq(struct cam_path *path, u_int32_t relsim_flags, 1197 u_int32_t openings, u_int32_t arg, 1198 int getcount_only) 1199 { 1200 struct ccb_relsim crs; 1201 1202 CAM_DEBUG(path, CAM_DEBUG_TRACE, ("cam_release_devq(%u, %u, %u, %d)\n", 1203 relsim_flags, openings, arg, getcount_only)); 1204 xpt_setup_ccb(&crs.ccb_h, path, CAM_PRIORITY_NORMAL); 1205 crs.ccb_h.func_code = XPT_REL_SIMQ; 1206 crs.ccb_h.flags = getcount_only ? CAM_DEV_QFREEZE : 0; 1207 crs.release_flags = relsim_flags; 1208 crs.openings = openings; 1209 crs.release_timeout = arg; 1210 xpt_action((union ccb *)&crs); 1211 return (crs.qfrozen_cnt); 1212 } 1213 1214 #define saved_ccb_ptr ppriv_ptr0 1215 static void 1216 camperiphdone(struct cam_periph *periph, union ccb *done_ccb) 1217 { 1218 union ccb *saved_ccb; 1219 cam_status status; 1220 struct scsi_start_stop_unit *scsi_cmd; 1221 int error_code, sense_key, asc, ascq; 1222 1223 scsi_cmd = (struct scsi_start_stop_unit *) 1224 &done_ccb->csio.cdb_io.cdb_bytes; 1225 status = done_ccb->ccb_h.status; 1226 1227 if ((status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 1228 if (scsi_extract_sense_ccb(done_ccb, 1229 &error_code, &sense_key, &asc, &ascq)) { 1230 /* 1231 * If the error is "invalid field in CDB", 1232 * and the load/eject flag is set, turn the 1233 * flag off and try again. This is just in 1234 * case the drive in question barfs on the 1235 * load eject flag. The CAM code should set 1236 * the load/eject flag by default for 1237 * removable media. 1238 */ 1239 if ((scsi_cmd->opcode == START_STOP_UNIT) && 1240 ((scsi_cmd->how & SSS_LOEJ) != 0) && 1241 (asc == 0x24) && (ascq == 0x00)) { 1242 scsi_cmd->how &= ~SSS_LOEJ; 1243 if (status & CAM_DEV_QFRZN) { 1244 cam_release_devq(done_ccb->ccb_h.path, 1245 0, 0, 0, 0); 1246 done_ccb->ccb_h.status &= 1247 ~CAM_DEV_QFRZN; 1248 } 1249 xpt_action(done_ccb); 1250 goto out; 1251 } 1252 } 1253 if (cam_periph_error(done_ccb, 1254 0, SF_RETRY_UA | SF_NO_PRINT, NULL) == ERESTART) 1255 goto out; 1256 if (done_ccb->ccb_h.status & CAM_DEV_QFRZN) { 1257 cam_release_devq(done_ccb->ccb_h.path, 0, 0, 0, 0); 1258 done_ccb->ccb_h.status &= ~CAM_DEV_QFRZN; 1259 } 1260 } else { 1261 /* 1262 * If we have successfully taken a device from the not 1263 * ready to ready state, re-scan the device and re-get 1264 * the inquiry information. Many devices (mostly disks) 1265 * don't properly report their inquiry information unless 1266 * they are spun up. 1267 */ 1268 if (scsi_cmd->opcode == START_STOP_UNIT) 1269 xpt_async(AC_INQ_CHANGED, done_ccb->ccb_h.path, NULL); 1270 } 1271 1272 /* 1273 * Perform the final retry with the original CCB so that final 1274 * error processing is performed by the owner of the CCB. 1275 */ 1276 saved_ccb = (union ccb *)done_ccb->ccb_h.saved_ccb_ptr; 1277 bcopy(saved_ccb, done_ccb, sizeof(*done_ccb)); 1278 xpt_free_ccb(saved_ccb); 1279 if (done_ccb->ccb_h.cbfcnp != camperiphdone) 1280 periph->flags &= ~CAM_PERIPH_RECOVERY_INPROG; 1281 xpt_action(done_ccb); 1282 1283 out: 1284 /* Drop freeze taken due to CAM_DEV_QFREEZE flag set. */ 1285 cam_release_devq(done_ccb->ccb_h.path, 0, 0, 0, 0); 1286 } 1287 1288 /* 1289 * Generic Async Event handler. Peripheral drivers usually 1290 * filter out the events that require personal attention, 1291 * and leave the rest to this function. 1292 */ 1293 void 1294 cam_periph_async(struct cam_periph *periph, u_int32_t code, 1295 struct cam_path *path, void *arg) 1296 { 1297 switch (code) { 1298 case AC_LOST_DEVICE: 1299 cam_periph_invalidate(periph); 1300 break; 1301 default: 1302 break; 1303 } 1304 } 1305 1306 void 1307 cam_periph_bus_settle(struct cam_periph *periph, u_int bus_settle) 1308 { 1309 struct ccb_getdevstats cgds; 1310 1311 xpt_setup_ccb(&cgds.ccb_h, periph->path, CAM_PRIORITY_NORMAL); 1312 cgds.ccb_h.func_code = XPT_GDEV_STATS; 1313 xpt_action((union ccb *)&cgds); 1314 cam_periph_freeze_after_event(periph, &cgds.last_reset, bus_settle); 1315 } 1316 1317 void 1318 cam_periph_freeze_after_event(struct cam_periph *periph, 1319 struct timeval* event_time, u_int duration_ms) 1320 { 1321 struct timeval delta; 1322 struct timeval duration_tv; 1323 1324 if (!timevalisset(event_time)) 1325 return; 1326 1327 microtime(&delta); 1328 timevalsub(&delta, event_time); 1329 duration_tv.tv_sec = duration_ms / 1000; 1330 duration_tv.tv_usec = (duration_ms % 1000) * 1000; 1331 if (timevalcmp(&delta, &duration_tv, <)) { 1332 timevalsub(&duration_tv, &delta); 1333 1334 duration_ms = duration_tv.tv_sec * 1000; 1335 duration_ms += duration_tv.tv_usec / 1000; 1336 cam_freeze_devq(periph->path); 1337 cam_release_devq(periph->path, 1338 RELSIM_RELEASE_AFTER_TIMEOUT, 1339 /*reduction*/0, 1340 /*timeout*/duration_ms, 1341 /*getcount_only*/0); 1342 } 1343 1344 } 1345 1346 static int 1347 camperiphscsistatuserror(union ccb *ccb, union ccb **orig_ccb, 1348 cam_flags camflags, u_int32_t sense_flags, 1349 int *openings, u_int32_t *relsim_flags, 1350 u_int32_t *timeout, u_int32_t *action, const char **action_string) 1351 { 1352 int error; 1353 1354 switch (ccb->csio.scsi_status) { 1355 case SCSI_STATUS_OK: 1356 case SCSI_STATUS_COND_MET: 1357 case SCSI_STATUS_INTERMED: 1358 case SCSI_STATUS_INTERMED_COND_MET: 1359 error = 0; 1360 break; 1361 case SCSI_STATUS_CMD_TERMINATED: 1362 case SCSI_STATUS_CHECK_COND: 1363 error = camperiphscsisenseerror(ccb, orig_ccb, 1364 camflags, 1365 sense_flags, 1366 openings, 1367 relsim_flags, 1368 timeout, 1369 action, 1370 action_string); 1371 break; 1372 case SCSI_STATUS_QUEUE_FULL: 1373 { 1374 /* no decrement */ 1375 struct ccb_getdevstats cgds; 1376 1377 /* 1378 * First off, find out what the current 1379 * transaction counts are. 1380 */ 1381 xpt_setup_ccb(&cgds.ccb_h, 1382 ccb->ccb_h.path, 1383 CAM_PRIORITY_NORMAL); 1384 cgds.ccb_h.func_code = XPT_GDEV_STATS; 1385 xpt_action((union ccb *)&cgds); 1386 1387 /* 1388 * If we were the only transaction active, treat 1389 * the QUEUE FULL as if it were a BUSY condition. 1390 */ 1391 if (cgds.dev_active != 0) { 1392 int total_openings; 1393 1394 /* 1395 * Reduce the number of openings to 1396 * be 1 less than the amount it took 1397 * to get a queue full bounded by the 1398 * minimum allowed tag count for this 1399 * device. 1400 */ 1401 total_openings = cgds.dev_active + cgds.dev_openings; 1402 *openings = cgds.dev_active; 1403 if (*openings < cgds.mintags) 1404 *openings = cgds.mintags; 1405 if (*openings < total_openings) 1406 *relsim_flags = RELSIM_ADJUST_OPENINGS; 1407 else { 1408 /* 1409 * Some devices report queue full for 1410 * temporary resource shortages. For 1411 * this reason, we allow a minimum 1412 * tag count to be entered via a 1413 * quirk entry to prevent the queue 1414 * count on these devices from falling 1415 * to a pessimisticly low value. We 1416 * still wait for the next successful 1417 * completion, however, before queueing 1418 * more transactions to the device. 1419 */ 1420 *relsim_flags = RELSIM_RELEASE_AFTER_CMDCMPLT; 1421 } 1422 *timeout = 0; 1423 error = ERESTART; 1424 *action &= ~SSQ_PRINT_SENSE; 1425 break; 1426 } 1427 /* FALLTHROUGH */ 1428 } 1429 case SCSI_STATUS_BUSY: 1430 /* 1431 * Restart the queue after either another 1432 * command completes or a 1 second timeout. 1433 */ 1434 if ((sense_flags & SF_RETRY_BUSY) != 0 || 1435 (ccb->ccb_h.retry_count--) > 0) { 1436 error = ERESTART; 1437 *relsim_flags = RELSIM_RELEASE_AFTER_TIMEOUT 1438 | RELSIM_RELEASE_AFTER_CMDCMPLT; 1439 *timeout = 1000; 1440 } else { 1441 error = EIO; 1442 } 1443 break; 1444 case SCSI_STATUS_RESERV_CONFLICT: 1445 default: 1446 error = EIO; 1447 break; 1448 } 1449 return (error); 1450 } 1451 1452 static int 1453 camperiphscsisenseerror(union ccb *ccb, union ccb **orig, 1454 cam_flags camflags, u_int32_t sense_flags, 1455 int *openings, u_int32_t *relsim_flags, 1456 u_int32_t *timeout, u_int32_t *action, const char **action_string) 1457 { 1458 struct cam_periph *periph; 1459 union ccb *orig_ccb = ccb; 1460 int error, recoveryccb; 1461 1462 #if defined(BUF_TRACKING) || defined(FULL_BUF_TRACKING) 1463 if (ccb->ccb_h.func_code == XPT_SCSI_IO && ccb->csio.bio != NULL) 1464 biotrack(ccb->csio.bio, __func__); 1465 #endif 1466 1467 periph = xpt_path_periph(ccb->ccb_h.path); 1468 recoveryccb = (ccb->ccb_h.cbfcnp == camperiphdone); 1469 if ((periph->flags & CAM_PERIPH_RECOVERY_INPROG) && !recoveryccb) { 1470 /* 1471 * If error recovery is already in progress, don't attempt 1472 * to process this error, but requeue it unconditionally 1473 * and attempt to process it once error recovery has 1474 * completed. This failed command is probably related to 1475 * the error that caused the currently active error recovery 1476 * action so our current recovery efforts should also 1477 * address this command. Be aware that the error recovery 1478 * code assumes that only one recovery action is in progress 1479 * on a particular peripheral instance at any given time 1480 * (e.g. only one saved CCB for error recovery) so it is 1481 * imperitive that we don't violate this assumption. 1482 */ 1483 error = ERESTART; 1484 *action &= ~SSQ_PRINT_SENSE; 1485 } else { 1486 scsi_sense_action err_action; 1487 struct ccb_getdev cgd; 1488 1489 /* 1490 * Grab the inquiry data for this device. 1491 */ 1492 xpt_setup_ccb(&cgd.ccb_h, ccb->ccb_h.path, CAM_PRIORITY_NORMAL); 1493 cgd.ccb_h.func_code = XPT_GDEV_TYPE; 1494 xpt_action((union ccb *)&cgd); 1495 1496 err_action = scsi_error_action(&ccb->csio, &cgd.inq_data, 1497 sense_flags); 1498 error = err_action & SS_ERRMASK; 1499 1500 /* 1501 * Do not autostart sequential access devices 1502 * to avoid unexpected tape loading. 1503 */ 1504 if ((err_action & SS_MASK) == SS_START && 1505 SID_TYPE(&cgd.inq_data) == T_SEQUENTIAL) { 1506 *action_string = "Will not autostart a " 1507 "sequential access device"; 1508 goto sense_error_done; 1509 } 1510 1511 /* 1512 * Avoid recovery recursion if recovery action is the same. 1513 */ 1514 if ((err_action & SS_MASK) >= SS_START && recoveryccb) { 1515 if (((err_action & SS_MASK) == SS_START && 1516 ccb->csio.cdb_io.cdb_bytes[0] == START_STOP_UNIT) || 1517 ((err_action & SS_MASK) == SS_TUR && 1518 (ccb->csio.cdb_io.cdb_bytes[0] == TEST_UNIT_READY))) { 1519 err_action = SS_RETRY|SSQ_DECREMENT_COUNT|EIO; 1520 *relsim_flags = RELSIM_RELEASE_AFTER_TIMEOUT; 1521 *timeout = 500; 1522 } 1523 } 1524 1525 /* 1526 * If the recovery action will consume a retry, 1527 * make sure we actually have retries available. 1528 */ 1529 if ((err_action & SSQ_DECREMENT_COUNT) != 0) { 1530 if (ccb->ccb_h.retry_count > 0 && 1531 (periph->flags & CAM_PERIPH_INVALID) == 0) 1532 ccb->ccb_h.retry_count--; 1533 else { 1534 *action_string = "Retries exhausted"; 1535 goto sense_error_done; 1536 } 1537 } 1538 1539 if ((err_action & SS_MASK) >= SS_START) { 1540 /* 1541 * Do common portions of commands that 1542 * use recovery CCBs. 1543 */ 1544 orig_ccb = xpt_alloc_ccb_nowait(); 1545 if (orig_ccb == NULL) { 1546 *action_string = "Can't allocate recovery CCB"; 1547 goto sense_error_done; 1548 } 1549 /* 1550 * Clear freeze flag for original request here, as 1551 * this freeze will be dropped as part of ERESTART. 1552 */ 1553 ccb->ccb_h.status &= ~CAM_DEV_QFRZN; 1554 bcopy(ccb, orig_ccb, sizeof(*orig_ccb)); 1555 } 1556 1557 switch (err_action & SS_MASK) { 1558 case SS_NOP: 1559 *action_string = "No recovery action needed"; 1560 error = 0; 1561 break; 1562 case SS_RETRY: 1563 *action_string = "Retrying command (per sense data)"; 1564 error = ERESTART; 1565 break; 1566 case SS_FAIL: 1567 *action_string = "Unretryable error"; 1568 break; 1569 case SS_START: 1570 { 1571 int le; 1572 1573 /* 1574 * Send a start unit command to the device, and 1575 * then retry the command. 1576 */ 1577 *action_string = "Attempting to start unit"; 1578 periph->flags |= CAM_PERIPH_RECOVERY_INPROG; 1579 1580 /* 1581 * Check for removable media and set 1582 * load/eject flag appropriately. 1583 */ 1584 if (SID_IS_REMOVABLE(&cgd.inq_data)) 1585 le = TRUE; 1586 else 1587 le = FALSE; 1588 1589 scsi_start_stop(&ccb->csio, 1590 /*retries*/1, 1591 camperiphdone, 1592 MSG_SIMPLE_Q_TAG, 1593 /*start*/TRUE, 1594 /*load/eject*/le, 1595 /*immediate*/FALSE, 1596 SSD_FULL_SIZE, 1597 /*timeout*/50000); 1598 break; 1599 } 1600 case SS_TUR: 1601 { 1602 /* 1603 * Send a Test Unit Ready to the device. 1604 * If the 'many' flag is set, we send 120 1605 * test unit ready commands, one every half 1606 * second. Otherwise, we just send one TUR. 1607 * We only want to do this if the retry 1608 * count has not been exhausted. 1609 */ 1610 int retries; 1611 1612 if ((err_action & SSQ_MANY) != 0) { 1613 *action_string = "Polling device for readiness"; 1614 retries = 120; 1615 } else { 1616 *action_string = "Testing device for readiness"; 1617 retries = 1; 1618 } 1619 periph->flags |= CAM_PERIPH_RECOVERY_INPROG; 1620 scsi_test_unit_ready(&ccb->csio, 1621 retries, 1622 camperiphdone, 1623 MSG_SIMPLE_Q_TAG, 1624 SSD_FULL_SIZE, 1625 /*timeout*/5000); 1626 1627 /* 1628 * Accomplish our 500ms delay by deferring 1629 * the release of our device queue appropriately. 1630 */ 1631 *relsim_flags = RELSIM_RELEASE_AFTER_TIMEOUT; 1632 *timeout = 500; 1633 break; 1634 } 1635 default: 1636 panic("Unhandled error action %x", err_action); 1637 } 1638 1639 if ((err_action & SS_MASK) >= SS_START) { 1640 /* 1641 * Drop the priority, so that the recovery 1642 * CCB is the first to execute. Freeze the queue 1643 * after this command is sent so that we can 1644 * restore the old csio and have it queued in 1645 * the proper order before we release normal 1646 * transactions to the device. 1647 */ 1648 ccb->ccb_h.pinfo.priority--; 1649 ccb->ccb_h.flags |= CAM_DEV_QFREEZE; 1650 ccb->ccb_h.saved_ccb_ptr = orig_ccb; 1651 error = ERESTART; 1652 *orig = orig_ccb; 1653 } 1654 1655 sense_error_done: 1656 *action = err_action; 1657 } 1658 return (error); 1659 } 1660 1661 /* 1662 * Generic error handler. Peripheral drivers usually filter 1663 * out the errors that they handle in a unique manner, then 1664 * call this function. 1665 */ 1666 int 1667 cam_periph_error(union ccb *ccb, cam_flags camflags, 1668 u_int32_t sense_flags, union ccb *save_ccb) 1669 { 1670 struct cam_path *newpath; 1671 union ccb *orig_ccb, *scan_ccb; 1672 struct cam_periph *periph; 1673 const char *action_string; 1674 cam_status status; 1675 int frozen, error, openings, devctl_err; 1676 u_int32_t action, relsim_flags, timeout; 1677 1678 action = SSQ_PRINT_SENSE; 1679 periph = xpt_path_periph(ccb->ccb_h.path); 1680 action_string = NULL; 1681 status = ccb->ccb_h.status; 1682 frozen = (status & CAM_DEV_QFRZN) != 0; 1683 status &= CAM_STATUS_MASK; 1684 devctl_err = openings = relsim_flags = timeout = 0; 1685 orig_ccb = ccb; 1686 1687 /* Filter the errors that should be reported via devctl */ 1688 switch (ccb->ccb_h.status & CAM_STATUS_MASK) { 1689 case CAM_CMD_TIMEOUT: 1690 case CAM_REQ_ABORTED: 1691 case CAM_REQ_CMP_ERR: 1692 case CAM_REQ_TERMIO: 1693 case CAM_UNREC_HBA_ERROR: 1694 case CAM_DATA_RUN_ERR: 1695 case CAM_SCSI_STATUS_ERROR: 1696 case CAM_ATA_STATUS_ERROR: 1697 case CAM_SMP_STATUS_ERROR: 1698 devctl_err++; 1699 break; 1700 default: 1701 break; 1702 } 1703 1704 switch (status) { 1705 case CAM_REQ_CMP: 1706 error = 0; 1707 action &= ~SSQ_PRINT_SENSE; 1708 break; 1709 case CAM_SCSI_STATUS_ERROR: 1710 error = camperiphscsistatuserror(ccb, &orig_ccb, 1711 camflags, sense_flags, &openings, &relsim_flags, 1712 &timeout, &action, &action_string); 1713 break; 1714 case CAM_AUTOSENSE_FAIL: 1715 error = EIO; /* we have to kill the command */ 1716 break; 1717 case CAM_UA_ABORT: 1718 case CAM_UA_TERMIO: 1719 case CAM_MSG_REJECT_REC: 1720 /* XXX Don't know that these are correct */ 1721 error = EIO; 1722 break; 1723 case CAM_SEL_TIMEOUT: 1724 if ((camflags & CAM_RETRY_SELTO) != 0) { 1725 if (ccb->ccb_h.retry_count > 0 && 1726 (periph->flags & CAM_PERIPH_INVALID) == 0) { 1727 ccb->ccb_h.retry_count--; 1728 error = ERESTART; 1729 1730 /* 1731 * Wait a bit to give the device 1732 * time to recover before we try again. 1733 */ 1734 relsim_flags = RELSIM_RELEASE_AFTER_TIMEOUT; 1735 timeout = periph_selto_delay; 1736 break; 1737 } 1738 action_string = "Retries exhausted"; 1739 } 1740 /* FALLTHROUGH */ 1741 case CAM_DEV_NOT_THERE: 1742 error = ENXIO; 1743 action = SSQ_LOST; 1744 break; 1745 case CAM_REQ_INVALID: 1746 case CAM_PATH_INVALID: 1747 case CAM_NO_HBA: 1748 case CAM_PROVIDE_FAIL: 1749 case CAM_REQ_TOO_BIG: 1750 case CAM_LUN_INVALID: 1751 case CAM_TID_INVALID: 1752 case CAM_FUNC_NOTAVAIL: 1753 error = EINVAL; 1754 break; 1755 case CAM_SCSI_BUS_RESET: 1756 case CAM_BDR_SENT: 1757 /* 1758 * Commands that repeatedly timeout and cause these 1759 * kinds of error recovery actions, should return 1760 * CAM_CMD_TIMEOUT, which allows us to safely assume 1761 * that this command was an innocent bystander to 1762 * these events and should be unconditionally 1763 * retried. 1764 */ 1765 case CAM_REQUEUE_REQ: 1766 /* Unconditional requeue if device is still there */ 1767 if (periph->flags & CAM_PERIPH_INVALID) { 1768 action_string = "Periph was invalidated"; 1769 error = EIO; 1770 } else if (sense_flags & SF_NO_RETRY) { 1771 error = EIO; 1772 action_string = "Retry was blocked"; 1773 } else { 1774 error = ERESTART; 1775 action &= ~SSQ_PRINT_SENSE; 1776 } 1777 break; 1778 case CAM_RESRC_UNAVAIL: 1779 /* Wait a bit for the resource shortage to abate. */ 1780 timeout = periph_noresrc_delay; 1781 /* FALLTHROUGH */ 1782 case CAM_BUSY: 1783 if (timeout == 0) { 1784 /* Wait a bit for the busy condition to abate. */ 1785 timeout = periph_busy_delay; 1786 } 1787 relsim_flags = RELSIM_RELEASE_AFTER_TIMEOUT; 1788 /* FALLTHROUGH */ 1789 case CAM_ATA_STATUS_ERROR: 1790 case CAM_REQ_CMP_ERR: 1791 case CAM_CMD_TIMEOUT: 1792 case CAM_UNEXP_BUSFREE: 1793 case CAM_UNCOR_PARITY: 1794 case CAM_DATA_RUN_ERR: 1795 default: 1796 if (periph->flags & CAM_PERIPH_INVALID) { 1797 error = EIO; 1798 action_string = "Periph was invalidated"; 1799 } else if (ccb->ccb_h.retry_count == 0) { 1800 error = EIO; 1801 action_string = "Retries exhausted"; 1802 } else if (sense_flags & SF_NO_RETRY) { 1803 error = EIO; 1804 action_string = "Retry was blocked"; 1805 } else { 1806 ccb->ccb_h.retry_count--; 1807 error = ERESTART; 1808 } 1809 break; 1810 } 1811 1812 if ((sense_flags & SF_PRINT_ALWAYS) || 1813 CAM_DEBUGGED(ccb->ccb_h.path, CAM_DEBUG_INFO)) 1814 action |= SSQ_PRINT_SENSE; 1815 else if (sense_flags & SF_NO_PRINT) 1816 action &= ~SSQ_PRINT_SENSE; 1817 if ((action & SSQ_PRINT_SENSE) != 0) 1818 cam_error_print(orig_ccb, CAM_ESF_ALL, CAM_EPF_ALL); 1819 if (error != 0 && (action & SSQ_PRINT_SENSE) != 0) { 1820 if (error != ERESTART) { 1821 if (action_string == NULL) 1822 action_string = "Unretryable error"; 1823 xpt_print(ccb->ccb_h.path, "Error %d, %s\n", 1824 error, action_string); 1825 } else if (action_string != NULL) 1826 xpt_print(ccb->ccb_h.path, "%s\n", action_string); 1827 else 1828 xpt_print(ccb->ccb_h.path, "Retrying command\n"); 1829 } 1830 1831 if (devctl_err && (error != 0 || (action & SSQ_PRINT_SENSE) != 0)) 1832 cam_periph_devctl_notify(orig_ccb); 1833 1834 if ((action & SSQ_LOST) != 0) { 1835 lun_id_t lun_id; 1836 1837 /* 1838 * For a selection timeout, we consider all of the LUNs on 1839 * the target to be gone. If the status is CAM_DEV_NOT_THERE, 1840 * then we only get rid of the device(s) specified by the 1841 * path in the original CCB. 1842 */ 1843 if (status == CAM_SEL_TIMEOUT) 1844 lun_id = CAM_LUN_WILDCARD; 1845 else 1846 lun_id = xpt_path_lun_id(ccb->ccb_h.path); 1847 1848 /* Should we do more if we can't create the path?? */ 1849 if (xpt_create_path(&newpath, periph, 1850 xpt_path_path_id(ccb->ccb_h.path), 1851 xpt_path_target_id(ccb->ccb_h.path), 1852 lun_id) == CAM_REQ_CMP) { 1853 1854 /* 1855 * Let peripheral drivers know that this 1856 * device has gone away. 1857 */ 1858 xpt_async(AC_LOST_DEVICE, newpath, NULL); 1859 xpt_free_path(newpath); 1860 } 1861 } 1862 1863 /* Broadcast UNIT ATTENTIONs to all periphs. */ 1864 if ((action & SSQ_UA) != 0) 1865 xpt_async(AC_UNIT_ATTENTION, orig_ccb->ccb_h.path, orig_ccb); 1866 1867 /* Rescan target on "Reported LUNs data has changed" */ 1868 if ((action & SSQ_RESCAN) != 0) { 1869 if (xpt_create_path(&newpath, NULL, 1870 xpt_path_path_id(ccb->ccb_h.path), 1871 xpt_path_target_id(ccb->ccb_h.path), 1872 CAM_LUN_WILDCARD) == CAM_REQ_CMP) { 1873 1874 scan_ccb = xpt_alloc_ccb_nowait(); 1875 if (scan_ccb != NULL) { 1876 scan_ccb->ccb_h.path = newpath; 1877 scan_ccb->ccb_h.func_code = XPT_SCAN_TGT; 1878 scan_ccb->crcn.flags = 0; 1879 xpt_rescan(scan_ccb); 1880 } else { 1881 xpt_print(newpath, 1882 "Can't allocate CCB to rescan target\n"); 1883 xpt_free_path(newpath); 1884 } 1885 } 1886 } 1887 1888 /* Attempt a retry */ 1889 if (error == ERESTART || error == 0) { 1890 if (frozen != 0) 1891 ccb->ccb_h.status &= ~CAM_DEV_QFRZN; 1892 if (error == ERESTART) 1893 xpt_action(ccb); 1894 if (frozen != 0) 1895 cam_release_devq(ccb->ccb_h.path, 1896 relsim_flags, 1897 openings, 1898 timeout, 1899 /*getcount_only*/0); 1900 } 1901 1902 return (error); 1903 } 1904 1905 #define CAM_PERIPH_DEVD_MSG_SIZE 256 1906 1907 static void 1908 cam_periph_devctl_notify(union ccb *ccb) 1909 { 1910 struct cam_periph *periph; 1911 struct ccb_getdev *cgd; 1912 struct sbuf sb; 1913 int serr, sk, asc, ascq; 1914 char *sbmsg, *type; 1915 1916 sbmsg = malloc(CAM_PERIPH_DEVD_MSG_SIZE, M_CAMPERIPH, M_NOWAIT); 1917 if (sbmsg == NULL) 1918 return; 1919 1920 sbuf_new(&sb, sbmsg, CAM_PERIPH_DEVD_MSG_SIZE, SBUF_FIXEDLEN); 1921 1922 periph = xpt_path_periph(ccb->ccb_h.path); 1923 sbuf_printf(&sb, "device=%s%d ", periph->periph_name, 1924 periph->unit_number); 1925 1926 sbuf_printf(&sb, "serial=\""); 1927 if ((cgd = (struct ccb_getdev *)xpt_alloc_ccb_nowait()) != NULL) { 1928 xpt_setup_ccb(&cgd->ccb_h, ccb->ccb_h.path, 1929 CAM_PRIORITY_NORMAL); 1930 cgd->ccb_h.func_code = XPT_GDEV_TYPE; 1931 xpt_action((union ccb *)cgd); 1932 1933 if (cgd->ccb_h.status == CAM_REQ_CMP) 1934 sbuf_bcat(&sb, cgd->serial_num, cgd->serial_num_len); 1935 xpt_free_ccb((union ccb *)cgd); 1936 } 1937 sbuf_printf(&sb, "\" "); 1938 sbuf_printf(&sb, "cam_status=\"0x%x\" ", ccb->ccb_h.status); 1939 1940 switch (ccb->ccb_h.status & CAM_STATUS_MASK) { 1941 case CAM_CMD_TIMEOUT: 1942 sbuf_printf(&sb, "timeout=%d ", ccb->ccb_h.timeout); 1943 type = "timeout"; 1944 break; 1945 case CAM_SCSI_STATUS_ERROR: 1946 sbuf_printf(&sb, "scsi_status=%d ", ccb->csio.scsi_status); 1947 if (scsi_extract_sense_ccb(ccb, &serr, &sk, &asc, &ascq)) 1948 sbuf_printf(&sb, "scsi_sense=\"%02x %02x %02x %02x\" ", 1949 serr, sk, asc, ascq); 1950 type = "error"; 1951 break; 1952 case CAM_ATA_STATUS_ERROR: 1953 sbuf_printf(&sb, "RES=\""); 1954 ata_res_sbuf(&ccb->ataio.res, &sb); 1955 sbuf_printf(&sb, "\" "); 1956 type = "error"; 1957 break; 1958 default: 1959 type = "error"; 1960 break; 1961 } 1962 1963 if (ccb->ccb_h.func_code == XPT_SCSI_IO) { 1964 sbuf_printf(&sb, "CDB=\""); 1965 scsi_cdb_sbuf(scsiio_cdb_ptr(&ccb->csio), &sb); 1966 sbuf_printf(&sb, "\" "); 1967 } else if (ccb->ccb_h.func_code == XPT_ATA_IO) { 1968 sbuf_printf(&sb, "ACB=\""); 1969 ata_cmd_sbuf(&ccb->ataio.cmd, &sb); 1970 sbuf_printf(&sb, "\" "); 1971 } 1972 1973 if (sbuf_finish(&sb) == 0) 1974 devctl_notify("CAM", "periph", type, sbuf_data(&sb)); 1975 sbuf_delete(&sb); 1976 free(sbmsg, M_CAMPERIPH); 1977 } 1978 1979