1 /* 2 * Copyright (c) 1997, 1998 Justin T. Gibbs. 3 * Copyright (c) 1997, 1998 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 * $Id$ 28 */ 29 30 #include <sys/param.h> 31 #include <sys/queue.h> 32 #include <sys/systm.h> 33 #include <sys/kernel.h> 34 #include <sys/types.h> 35 #include <sys/buf.h> 36 #include <sys/dkbad.h> 37 #include <sys/disklabel.h> 38 #include <sys/diskslice.h> 39 #include <sys/malloc.h> 40 #include <sys/fcntl.h> 41 #include <sys/stat.h> 42 #include <sys/conf.h> 43 #include <sys/buf.h> 44 #include <sys/proc.h> 45 #include <sys/cdio.h> 46 #include <sys/errno.h> 47 #include <sys/devicestat.h> 48 49 #include <cam/cam.h> 50 #include <cam/cam_ccb.h> 51 #include <cam/cam_extend.h> 52 #include <cam/cam_periph.h> 53 #include <cam/cam_xpt_periph.h> 54 #include <cam/cam_debug.h> 55 56 #include <cam/scsi/scsi_all.h> 57 #include <cam/scsi/scsi_message.h> 58 #include <cam/scsi/scsi_da.h> 59 #include <cam/scsi/scsi_pass.h> 60 61 typedef enum { 62 PASS_FLAG_OPEN = 0x01, 63 PASS_FLAG_LOCKED = 0x02, 64 PASS_FLAG_INVALID = 0x04 65 } pass_flags; 66 67 typedef enum { 68 PASS_STATE_NORMAL 69 } pass_state; 70 71 typedef enum { 72 PASS_CCB_BUFFER_IO, 73 PASS_CCB_WAITING 74 } pass_ccb_types; 75 76 #define ccb_type ppriv_field0 77 #define ccb_bp ppriv_ptr1 78 79 struct pass_softc { 80 pass_state state; 81 pass_flags flags; 82 u_int8_t pd_type; 83 struct buf_queue_head buf_queue; 84 union ccb saved_ccb; 85 struct devstat device_stats; 86 #ifdef DEVFS 87 void *pass_devfs_token; 88 void *ctl_devfs_token; 89 #endif 90 }; 91 92 #ifndef MIN 93 #define MIN(x,y) ((x<y) ? x : y) 94 #endif 95 96 #define PASS_CDEV_MAJOR 31 97 98 static d_open_t passopen; 99 static d_read_t passread; 100 static d_write_t passwrite; 101 static d_close_t passclose; 102 static d_ioctl_t passioctl; 103 static d_strategy_t passstrategy; 104 105 static periph_init_t passinit; 106 static periph_ctor_t passregister; 107 static periph_dtor_t passcleanup; 108 static periph_start_t passstart; 109 static void passasync(void *callback_arg, u_int32_t code, 110 struct cam_path *path, void *arg); 111 static void passdone(struct cam_periph *periph, 112 union ccb *done_ccb); 113 static int passerror(union ccb *ccb, u_int32_t cam_flags, 114 u_int32_t sense_flags); 115 static int passsendccb(struct cam_periph *periph, union ccb *ccb, 116 union ccb *inccb); 117 118 static struct periph_driver passdriver = 119 { 120 passinit, "pass", 121 TAILQ_HEAD_INITIALIZER(passdriver.units), /* generation */ 0 122 }; 123 124 DATA_SET(periphdriver_set, passdriver); 125 126 static struct cdevsw pass_cdevsw = 127 { 128 /*d_open*/ passopen, 129 /*d_close*/ passclose, 130 /*d_read*/ passread, 131 /*d_write*/ passwrite, 132 /*d_ioctl*/ passioctl, 133 /*d_stop*/ nostop, 134 /*d_reset*/ noreset, 135 /*d_devtotty*/ nodevtotty, 136 /*d_poll*/ seltrue, 137 /*d_mmap*/ nommap, 138 /*d_strategy*/ passstrategy, 139 /*d_name*/ "pass", 140 /*d_spare*/ NULL, 141 /*d_maj*/ -1, 142 /*d_dump*/ nodump, 143 /*d_psize*/ nopsize, 144 /*d_flags*/ 0, 145 /*d_maxio*/ 0, 146 /*b_maj*/ -1 147 }; 148 149 static struct extend_array *passperiphs; 150 151 static void 152 passinit(void) 153 { 154 cam_status status; 155 struct cam_path *path; 156 157 /* 158 * Create our extend array for storing the devices we attach to. 159 */ 160 passperiphs = cam_extend_new(); 161 if (passperiphs == NULL) { 162 printf("passm: Failed to alloc extend array!\n"); 163 return; 164 } 165 166 /* 167 * Install a global async callback. This callback will 168 * receive async callbacks like "new device found". 169 */ 170 status = xpt_create_path(&path, /*periph*/NULL, CAM_XPT_PATH_ID, 171 CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD); 172 173 if (status == CAM_REQ_CMP) { 174 struct ccb_setasync csa; 175 176 xpt_setup_ccb(&csa.ccb_h, path, /*priority*/5); 177 csa.ccb_h.func_code = XPT_SASYNC_CB; 178 csa.event_enable = AC_FOUND_DEVICE; 179 csa.callback = passasync; 180 csa.callback_arg = NULL; 181 xpt_action((union ccb *)&csa); 182 status = csa.ccb_h.status; 183 xpt_free_path(path); 184 } 185 186 if (status != CAM_REQ_CMP) { 187 printf("pass: Failed to attach master async callback " 188 "due to status 0x%x!\n", status); 189 } else { 190 dev_t dev; 191 192 /* If we were successfull, register our devsw */ 193 dev = makedev(PASS_CDEV_MAJOR, 0); 194 cdevsw_add(&dev, &pass_cdevsw, NULL); 195 } 196 197 } 198 199 static void 200 passcleanup(struct cam_periph *periph) 201 { 202 cam_extend_release(passperiphs, periph->unit_number); 203 204 if (bootverbose) { 205 xpt_print_path(periph->path); 206 printf("removing device entry\n"); 207 } 208 free(periph->softc, M_DEVBUF); 209 } 210 211 static void 212 passasync(void *callback_arg, u_int32_t code, 213 struct cam_path *path, void *arg) 214 { 215 struct cam_periph *periph; 216 217 periph = (struct cam_periph *)callback_arg; 218 219 switch (code) { 220 case AC_FOUND_DEVICE: 221 { 222 struct ccb_getdev *cgd; 223 cam_status status; 224 225 cgd = (struct ccb_getdev *)arg; 226 227 /* 228 * Allocate a peripheral instance for 229 * this device and start the probe 230 * process. 231 */ 232 status = cam_periph_alloc(passregister, passcleanup, passstart, 233 "pass", CAM_PERIPH_BIO, 234 cgd->ccb_h.path, passasync, 235 AC_FOUND_DEVICE, cgd); 236 237 if (status != CAM_REQ_CMP 238 && status != CAM_REQ_INPROG) 239 printf("passasync: Unable to attach new device " 240 "due to status 0x%x\n", status); 241 242 break; 243 } 244 case AC_LOST_DEVICE: 245 { 246 int s; 247 struct pass_softc *softc; 248 struct buf *q_bp; 249 struct ccb_setasync csa; 250 251 softc = (struct pass_softc *)periph->softc; 252 253 /* 254 * Insure that no other async callbacks that 255 * might affect this peripheral can come through. 256 */ 257 s = splcam(); 258 259 /* 260 * De-register any async callbacks. 261 */ 262 xpt_setup_ccb(&csa.ccb_h, periph->path, 263 /* priority */ 5); 264 csa.ccb_h.func_code = XPT_SASYNC_CB; 265 csa.event_enable = 0; 266 csa.callback = passasync; 267 csa.callback_arg = periph; 268 xpt_action((union ccb *)&csa); 269 270 softc->flags |= PASS_FLAG_INVALID; 271 272 /* 273 * Return all queued I/O with ENXIO. 274 * XXX Handle any transactions queued to the card 275 * with XPT_ABORT_CCB. 276 */ 277 while ((q_bp = bufq_first(&softc->buf_queue)) != NULL){ 278 bufq_remove(&softc->buf_queue, q_bp); 279 q_bp->b_resid = q_bp->b_bcount; 280 q_bp->b_error = ENXIO; 281 q_bp->b_flags |= B_ERROR; 282 biodone(q_bp); 283 } 284 devstat_remove_entry(&softc->device_stats); 285 286 if (bootverbose) { 287 xpt_print_path(periph->path); 288 printf("lost device\n"); 289 } 290 291 splx(s); 292 293 cam_periph_invalidate(periph); 294 break; 295 } 296 case AC_TRANSFER_NEG: 297 case AC_SENT_BDR: 298 case AC_SCSI_AEN: 299 case AC_UNSOL_RESEL: 300 case AC_BUS_RESET: 301 default: 302 break; 303 } 304 } 305 306 static cam_status 307 passregister(struct cam_periph *periph, void *arg) 308 { 309 int s; 310 struct pass_softc *softc; 311 struct ccb_setasync csa; 312 struct ccb_getdev *cgd; 313 314 cgd = (struct ccb_getdev *)arg; 315 if (periph == NULL) { 316 printf("passregister: periph was NULL!!\n"); 317 return(CAM_REQ_CMP_ERR); 318 } 319 320 if (cgd == NULL) { 321 printf("passregister: no getdev CCB, can't register device\n"); 322 return(CAM_REQ_CMP_ERR); 323 } 324 325 softc = (struct pass_softc *)malloc(sizeof(*softc), 326 M_DEVBUF, M_NOWAIT); 327 328 if (softc == NULL) { 329 printf("passregister: Unable to probe new device. " 330 "Unable to allocate softc\n"); 331 return(CAM_REQ_CMP_ERR); 332 } 333 334 bzero(softc, sizeof(*softc)); 335 softc->state = PASS_STATE_NORMAL; 336 softc->pd_type = cgd->pd_type; 337 bufq_init(&softc->buf_queue); 338 339 periph->softc = softc; 340 341 cam_extend_set(passperiphs, periph->unit_number, periph); 342 /* 343 * We pass in 0 for a blocksize, since we don't 344 * know what the blocksize of this device is, if 345 * it even has a blocksize. 346 */ 347 devstat_add_entry(&softc->device_stats, "pass", periph->unit_number, 348 0, DEVSTAT_NO_BLOCKSIZE | DEVSTAT_NO_ORDERED_TAGS, 349 cgd->pd_type | 350 DEVSTAT_TYPE_IF_SCSI | 351 DEVSTAT_TYPE_PASS); 352 /* 353 * Add an async callback so that we get 354 * notified if this device goes away. 355 */ 356 xpt_setup_ccb(&csa.ccb_h, periph->path, /* priority */ 5); 357 csa.ccb_h.func_code = XPT_SASYNC_CB; 358 csa.event_enable = AC_LOST_DEVICE; 359 csa.callback = passasync; 360 csa.callback_arg = periph; 361 xpt_action((union ccb *)&csa); 362 363 if (bootverbose) 364 xpt_announce_periph(periph, NULL); 365 366 return(CAM_REQ_CMP); 367 } 368 369 static int 370 passopen(dev_t dev, int flags, int fmt, struct proc *p) 371 { 372 struct cam_periph *periph; 373 struct pass_softc *softc; 374 int unit, error; 375 376 error = 0; /* default to no error */ 377 378 /* unit = dkunit(dev); */ 379 /* XXX KDM fix this */ 380 unit = minor(dev) & 0xff; 381 382 periph = cam_extend_get(passperiphs, unit); 383 384 if (periph == NULL) 385 return (ENXIO); 386 387 softc = (struct pass_softc *)periph->softc; 388 389 if (softc->flags & PASS_FLAG_INVALID) 390 return(ENXIO); 391 392 /* 393 * We don't allow nonblocking access. 394 */ 395 if ((flags & O_NONBLOCK) != 0) { 396 printf("%s%d: can't do nonblocking accesss\n", 397 periph->periph_name, 398 periph->unit_number); 399 return(ENODEV); 400 } 401 402 if ((error = cam_periph_lock(periph, PRIBIO | PCATCH)) != 0) 403 return (error); 404 405 if ((softc->flags & PASS_FLAG_OPEN) == 0) { 406 if (cam_periph_acquire(periph) != CAM_REQ_CMP) 407 return(ENXIO); 408 softc->flags |= PASS_FLAG_OPEN; 409 } 410 411 cam_periph_unlock(periph); 412 413 return (error); 414 } 415 416 static int 417 passclose(dev_t dev, int flag, int fmt, struct proc *p) 418 { 419 struct cam_periph *periph; 420 struct pass_softc *softc; 421 int unit, error; 422 423 /* unit = dkunit(dev); */ 424 /* XXX KDM fix this */ 425 unit = minor(dev) & 0xff; 426 427 periph = cam_extend_get(passperiphs, unit); 428 if (periph == NULL) 429 return (ENXIO); 430 431 softc = (struct pass_softc *)periph->softc; 432 433 if ((error = cam_periph_lock(periph, PRIBIO)) != 0) 434 return (error); 435 436 softc->flags &= ~PASS_FLAG_OPEN; 437 438 cam_periph_unlock(periph); 439 cam_periph_release(periph); 440 441 return (0); 442 } 443 444 static int 445 passread(dev_t dev, struct uio *uio, int ioflag) 446 { 447 return(physio(passstrategy, NULL, dev, 1, minphys, uio)); 448 } 449 450 static int 451 passwrite(dev_t dev, struct uio *uio, int ioflag) 452 { 453 return(physio(passstrategy, NULL, dev, 0, minphys, uio)); 454 } 455 456 /* 457 * Actually translate the requested transfer into one the physical driver 458 * can understand. The transfer is described by a buf and will include 459 * only one physical transfer. 460 */ 461 static void 462 passstrategy(struct buf *bp) 463 { 464 struct cam_periph *periph; 465 struct pass_softc *softc; 466 u_int unit; 467 int s; 468 469 /* 470 * The read/write interface for the passthrough driver doesn't 471 * really work right now. So, we just pass back EINVAL to tell the 472 * user to go away. 473 */ 474 bp->b_error = EINVAL; 475 goto bad; 476 477 /* unit = dkunit(bp->b_dev); */ 478 /* XXX KDM fix this */ 479 unit = minor(bp->b_dev) & 0xff; 480 481 periph = cam_extend_get(passperiphs, unit); 482 if (periph == NULL) { 483 bp->b_error = ENXIO; 484 goto bad; 485 } 486 softc = (struct pass_softc *)periph->softc; 487 488 /* 489 * Odd number of bytes or negative offset 490 */ 491 /* valid request? */ 492 if (bp->b_blkno < 0) { 493 bp->b_error = EINVAL; 494 goto bad; 495 } 496 497 /* 498 * Mask interrupts so that the pack cannot be invalidated until 499 * after we are in the queue. Otherwise, we might not properly 500 * clean up one of the buffers. 501 */ 502 s = splbio(); 503 504 bufq_insert_tail(&softc->buf_queue, bp); 505 506 splx(s); 507 508 /* 509 * Schedule ourselves for performing the work. 510 */ 511 xpt_schedule(periph, /* XXX priority */1); 512 513 return; 514 bad: 515 bp->b_flags |= B_ERROR; 516 517 /* 518 * Correctly set the buf to indicate a completed xfer 519 */ 520 bp->b_resid = bp->b_bcount; 521 biodone(bp); 522 return; 523 } 524 525 static void 526 passstart(struct cam_periph *periph, union ccb *start_ccb) 527 { 528 struct pass_softc *softc; 529 int s; 530 531 softc = (struct pass_softc *)periph->softc; 532 533 switch (softc->state) { 534 case PASS_STATE_NORMAL: 535 { 536 struct buf *bp; 537 538 s = splbio(); 539 bp = bufq_first(&softc->buf_queue); 540 if (periph->immediate_priority <= periph->pinfo.priority) { 541 start_ccb->ccb_h.ccb_type = PASS_CCB_WAITING; 542 SLIST_INSERT_HEAD(&periph->ccb_list, &start_ccb->ccb_h, 543 periph_links.sle); 544 periph->immediate_priority = CAM_PRIORITY_NONE; 545 splx(s); 546 wakeup(&periph->ccb_list); 547 } else if (bp == NULL) { 548 splx(s); 549 xpt_release_ccb(start_ccb); 550 } else { 551 552 bufq_remove(&softc->buf_queue, bp); 553 554 devstat_start_transaction(&softc->device_stats); 555 556 /* 557 * XXX JGibbs - 558 * Interpret the contents of the bp as a CCB 559 * and pass it to a routine shared by our ioctl 560 * code and passtart. 561 * For now, just biodone it with EIO so we don't 562 * hang. 563 */ 564 bp->b_error = EIO; 565 bp->b_flags |= B_ERROR; 566 bp->b_resid = bp->b_bcount; 567 biodone(bp); 568 bp = bufq_first(&softc->buf_queue); 569 splx(s); 570 571 xpt_action(start_ccb); 572 573 } 574 if (bp != NULL) { 575 /* Have more work to do, so ensure we stay scheduled */ 576 xpt_schedule(periph, /* XXX priority */1); 577 } 578 break; 579 } 580 } 581 } 582 static void 583 passdone(struct cam_periph *periph, union ccb *done_ccb) 584 { 585 struct pass_softc *softc; 586 struct ccb_scsiio *csio; 587 588 softc = (struct pass_softc *)periph->softc; 589 csio = &done_ccb->csio; 590 switch (csio->ccb_h.ccb_type) { 591 case PASS_CCB_BUFFER_IO: 592 { 593 struct buf *bp; 594 cam_status status; 595 u_int8_t scsi_status; 596 devstat_trans_flags ds_flags; 597 598 status = done_ccb->ccb_h.status; 599 scsi_status = done_ccb->csio.scsi_status; 600 bp = (struct buf *)done_ccb->ccb_h.ccb_bp; 601 /* XXX handle errors */ 602 if (!(((status & CAM_STATUS_MASK) == CAM_REQ_CMP) 603 && (scsi_status == SCSI_STATUS_OK))) { 604 int error; 605 606 if ((error = passerror(done_ccb, 0, 0)) == ERESTART) { 607 /* 608 * A retry was scheuled, so 609 * just return. 610 */ 611 return; 612 } 613 614 /* 615 * XXX unfreeze the queue after we complete 616 * the abort process 617 */ 618 bp->b_error = error; 619 bp->b_flags |= B_ERROR; 620 } 621 622 if ((done_ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) 623 ds_flags = DEVSTAT_READ; 624 else if ((done_ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_OUT) 625 ds_flags = DEVSTAT_WRITE; 626 else 627 ds_flags = DEVSTAT_NO_DATA; 628 629 devstat_end_transaction(&softc->device_stats, bp->b_bcount, 630 done_ccb->csio.tag_action & 0xf, 631 ds_flags); 632 633 biodone(bp); 634 break; 635 } 636 case PASS_CCB_WAITING: 637 { 638 /* Caller will release the CCB */ 639 wakeup(&done_ccb->ccb_h.cbfcnp); 640 return; 641 } 642 } 643 xpt_release_ccb(done_ccb); 644 } 645 646 static int 647 passioctl(dev_t dev, u_long cmd, caddr_t addr, int flag, struct proc *p) 648 { 649 struct cam_periph *periph; 650 struct pass_softc *softc; 651 u_int8_t unit; 652 int error; 653 654 655 /* unit = dkunit(dev); */ 656 /* XXX KDM fix this */ 657 unit = minor(dev) & 0xff; 658 659 periph = cam_extend_get(passperiphs, unit); 660 661 if (periph == NULL) 662 return(ENXIO); 663 664 softc = (struct pass_softc *)periph->softc; 665 666 error = 0; 667 668 switch (cmd) { 669 670 case CAMIOCOMMAND: 671 { 672 union ccb *inccb; 673 union ccb *ccb; 674 675 inccb = (union ccb *)addr; 676 ccb = cam_periph_getccb(periph, inccb->ccb_h.pinfo.priority); 677 678 error = passsendccb(periph, ccb, inccb); 679 680 xpt_release_ccb(ccb); 681 682 break; 683 } 684 default: 685 error = cam_periph_ioctl(periph, cmd, addr, passerror); 686 break; 687 } 688 689 return(error); 690 } 691 692 /* 693 * Generally, "ccb" should be the CCB supplied by the kernel. "inccb" 694 * should be the CCB that is copied in from the user. 695 */ 696 static int 697 passsendccb(struct cam_periph *periph, union ccb *ccb, union ccb *inccb) 698 { 699 struct buf *bp[2]; 700 struct pass_softc *softc; 701 struct cam_periph_map_info mapinfo; 702 int error, need_unmap; 703 704 softc = (struct pass_softc *)periph->softc; 705 706 need_unmap = 0; 707 708 /* 709 * There are some fields in the CCB header that need to be 710 * preserved, the rest we get from the user. 711 */ 712 xpt_merge_ccb(ccb, inccb); 713 714 /* 715 * There's no way for the user to have a completion 716 * function, so we put our own completion function in here. 717 */ 718 ccb->ccb_h.cbfcnp = passdone; 719 720 /* 721 * We only attempt to map the user memory into kernel space 722 * if they haven't passed in a physical memory pointer, 723 * and if there is actually an I/O operation to perform. 724 * Right now cam_periph_mapmem() only supports SCSI and device 725 * match CCBs. For the SCSI CCBs, we only pass the CCB in if 726 * there's actually data to map. cam_periph_mapmem() will do the 727 * right thing, even if there isn't data to map, but since CCBs 728 * without data are a reasonably common occurance (e.g. test unit 729 * ready), it will save a few cycles if we check for it here. 730 */ 731 if (((ccb->ccb_h.flags & CAM_DATA_PHYS) == 0) 732 && (((ccb->ccb_h.func_code == XPT_SCSI_IO) 733 && ((ccb->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_NONE)) 734 || (ccb->ccb_h.func_code == XPT_DEV_MATCH))) { 735 736 bzero(&mapinfo, sizeof(mapinfo)); 737 738 error = cam_periph_mapmem(ccb, &mapinfo); 739 740 /* 741 * cam_periph_mapmem returned an error, we can't continue. 742 * Return the error to the user. 743 */ 744 if (error) 745 return(error); 746 747 /* 748 * We successfully mapped the memory in, so we need to 749 * unmap it when the transaction is done. 750 */ 751 need_unmap = 1; 752 } 753 754 /* 755 * If the user wants us to perform any error recovery, then honor 756 * that request. Otherwise, it's up to the user to perform any 757 * error recovery. 758 */ 759 error = cam_periph_runccb(ccb, 760 (ccb->ccb_h.flags & CAM_PASS_ERR_RECOVER) ? 761 passerror : NULL, 762 /* cam_flags */ 0, 763 /* sense_flags */SF_RETRY_UA, 764 &softc->device_stats); 765 766 if (need_unmap != 0) 767 cam_periph_unmapmem(ccb, &mapinfo); 768 769 ccb->ccb_h.cbfcnp = NULL; 770 ccb->ccb_h.periph_priv = inccb->ccb_h.periph_priv; 771 bcopy(ccb, inccb, sizeof(union ccb)); 772 773 return(error); 774 } 775 776 static int 777 passerror(union ccb *ccb, u_int32_t cam_flags, u_int32_t sense_flags) 778 { 779 struct cam_periph *periph; 780 struct pass_softc *softc; 781 782 periph = xpt_path_periph(ccb->ccb_h.path); 783 softc = (struct pass_softc *)periph->softc; 784 785 return(cam_periph_error(ccb, cam_flags, sense_flags, 786 &softc->saved_ccb)); 787 } 788