1 /* 2 * Implementation of SCSI Processor Target Peripheral driver for CAM. 3 * 4 * Copyright (c) 1998 Justin T. Gibbs. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions, and the following disclaimer, 12 * without modification, immediately at the beginning of the file. 13 * 2. The name of the author may not be used to endorse or promote products 14 * derived from this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR 20 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 * 28 * $FreeBSD$ 29 */ 30 31 #include <sys/param.h> 32 #include <sys/queue.h> 33 #include <sys/systm.h> 34 #include <sys/kernel.h> 35 #include <sys/types.h> 36 #include <sys/buf.h> 37 #include <sys/devicestat.h> 38 #include <sys/malloc.h> 39 #include <sys/conf.h> 40 #include <sys/ptio.h> 41 42 #include <cam/cam.h> 43 #include <cam/cam_ccb.h> 44 #include <cam/cam_extend.h> 45 #include <cam/cam_periph.h> 46 #include <cam/cam_xpt_periph.h> 47 #include <cam/cam_debug.h> 48 49 #include <cam/scsi/scsi_all.h> 50 #include <cam/scsi/scsi_message.h> 51 #include <cam/scsi/scsi_pt.h> 52 53 #include "opt_pt.h" 54 55 typedef enum { 56 PT_STATE_PROBE, 57 PT_STATE_NORMAL 58 } pt_state; 59 60 typedef enum { 61 PT_FLAG_NONE = 0x00, 62 PT_FLAG_OPEN = 0x01, 63 PT_FLAG_DEVICE_INVALID = 0x02, 64 PT_FLAG_RETRY_UA = 0x04 65 } pt_flags; 66 67 typedef enum { 68 PT_CCB_BUFFER_IO = 0x01, 69 PT_CCB_WAITING = 0x02, 70 PT_CCB_RETRY_UA = 0x04, 71 PT_CCB_BUFFER_IO_UA = PT_CCB_BUFFER_IO|PT_CCB_RETRY_UA 72 } pt_ccb_state; 73 74 /* Offsets into our private area for storing information */ 75 #define ccb_state ppriv_field0 76 #define ccb_bp ppriv_ptr1 77 78 struct pt_softc { 79 struct buf_queue_head buf_queue; 80 struct devstat device_stats; 81 LIST_HEAD(, ccb_hdr) pending_ccbs; 82 pt_state state; 83 pt_flags flags; 84 union ccb saved_ccb; 85 int io_timeout; 86 }; 87 88 static d_open_t ptopen; 89 static d_close_t ptclose; 90 static d_strategy_t ptstrategy; 91 static periph_init_t ptinit; 92 static void ptasync(void *callback_arg, u_int32_t code, 93 struct cam_path *path, void *arg); 94 static periph_ctor_t ptctor; 95 static periph_oninv_t ptoninvalidate; 96 static periph_dtor_t ptdtor; 97 static periph_start_t ptstart; 98 static void ptdone(struct cam_periph *periph, 99 union ccb *done_ccb); 100 static d_ioctl_t ptioctl; 101 static int pterror(union ccb *ccb, u_int32_t cam_flags, 102 u_int32_t sense_flags); 103 104 void scsi_send_receive(struct ccb_scsiio *csio, u_int32_t retries, 105 void (*cbfcnp)(struct cam_periph *, union ccb *), 106 u_int tag_action, int readop, u_int byte2, 107 u_int32_t xfer_len, u_int8_t *data_ptr, 108 u_int8_t sense_len, u_int32_t timeout); 109 110 static struct periph_driver ptdriver = 111 { 112 ptinit, "pt", 113 TAILQ_HEAD_INITIALIZER(ptdriver.units), /* generation */ 0 114 }; 115 116 DATA_SET(periphdriver_set, ptdriver); 117 118 #define PT_CDEV_MAJOR 61 119 120 static struct cdevsw pt_cdevsw = { 121 /* open */ ptopen, 122 /* close */ ptclose, 123 /* read */ physread, 124 /* write */ physwrite, 125 /* ioctl */ ptioctl, 126 /* poll */ nopoll, 127 /* mmap */ nommap, 128 /* strategy */ ptstrategy, 129 /* name */ "pt", 130 /* maj */ PT_CDEV_MAJOR, 131 /* dump */ nodump, 132 /* psize */ nopsize, 133 /* flags */ 0, 134 /* bmaj */ -1 135 }; 136 137 static struct extend_array *ptperiphs; 138 139 #ifndef SCSI_PT_DEFAULT_TIMEOUT 140 #define SCSI_PT_DEFAULT_TIMEOUT 60 141 #endif 142 143 static int 144 ptopen(dev_t dev, int flags, int fmt, struct proc *p) 145 { 146 struct cam_periph *periph; 147 struct pt_softc *softc; 148 int unit; 149 int error; 150 int s; 151 152 unit = minor(dev); 153 periph = cam_extend_get(ptperiphs, unit); 154 if (periph == NULL) 155 return (ENXIO); 156 157 softc = (struct pt_softc *)periph->softc; 158 159 s = splsoftcam(); 160 if (softc->flags & PT_FLAG_DEVICE_INVALID) { 161 splx(s); 162 return(ENXIO); 163 } 164 165 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, 166 ("ptopen: dev=%s (unit %d)\n", devtoname(dev), unit)); 167 168 if ((error = cam_periph_lock(periph, PRIBIO|PCATCH)) != 0) { 169 splx(s); 170 return (error); /* error code from tsleep */ 171 } 172 173 splx(s); 174 175 if ((softc->flags & PT_FLAG_OPEN) == 0) { 176 if (cam_periph_acquire(periph) != CAM_REQ_CMP) 177 error = ENXIO; 178 else 179 softc->flags |= PT_FLAG_OPEN; 180 } else 181 error = EBUSY; 182 183 cam_periph_unlock(periph); 184 return (error); 185 } 186 187 static int 188 ptclose(dev_t dev, int flag, int fmt, struct proc *p) 189 { 190 struct cam_periph *periph; 191 struct pt_softc *softc; 192 int unit; 193 int error; 194 195 unit = minor(dev); 196 periph = cam_extend_get(ptperiphs, unit); 197 if (periph == NULL) 198 return (ENXIO); 199 200 softc = (struct pt_softc *)periph->softc; 201 202 if ((error = cam_periph_lock(periph, PRIBIO)) != 0) 203 return (error); /* error code from tsleep */ 204 205 softc->flags &= ~PT_FLAG_OPEN; 206 cam_periph_unlock(periph); 207 cam_periph_release(periph); 208 return (0); 209 } 210 211 /* 212 * Actually translate the requested transfer into one the physical driver 213 * can understand. The transfer is described by a buf and will include 214 * only one physical transfer. 215 */ 216 static void 217 ptstrategy(struct buf *bp) 218 { 219 struct cam_periph *periph; 220 struct pt_softc *softc; 221 u_int unit; 222 int s; 223 224 unit = minor(bp->b_dev); 225 periph = cam_extend_get(ptperiphs, unit); 226 if (periph == NULL) { 227 bp->b_error = ENXIO; 228 goto bad; 229 } 230 softc = (struct pt_softc *)periph->softc; 231 232 /* 233 * Mask interrupts so that the pack cannot be invalidated until 234 * after we are in the queue. Otherwise, we might not properly 235 * clean up one of the buffers. 236 */ 237 s = splbio(); 238 239 /* 240 * If the device has been made invalid, error out 241 */ 242 if ((softc->flags & PT_FLAG_DEVICE_INVALID)) { 243 splx(s); 244 bp->b_error = ENXIO; 245 goto bad; 246 } 247 248 /* 249 * Place it in the queue of disk activities for this disk 250 */ 251 bufq_insert_tail(&softc->buf_queue, bp); 252 253 splx(s); 254 255 /* 256 * Schedule ourselves for performing the work. 257 */ 258 xpt_schedule(periph, /* XXX priority */1); 259 260 return; 261 bad: 262 bp->b_flags |= B_ERROR; 263 264 /* 265 * Correctly set the buf to indicate a completed xfer 266 */ 267 bp->b_resid = bp->b_bcount; 268 biodone(bp); 269 } 270 271 static void 272 ptinit(void) 273 { 274 cam_status status; 275 struct cam_path *path; 276 277 /* 278 * Create our extend array for storing the devices we attach to. 279 */ 280 ptperiphs = cam_extend_new(); 281 if (ptperiphs == NULL) { 282 printf("pt: Failed to alloc extend array!\n"); 283 return; 284 } 285 286 /* 287 * Install a global async callback. This callback will 288 * receive async callbacks like "new device found". 289 */ 290 status = xpt_create_path(&path, /*periph*/NULL, CAM_XPT_PATH_ID, 291 CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD); 292 293 if (status == CAM_REQ_CMP) { 294 struct ccb_setasync csa; 295 296 xpt_setup_ccb(&csa.ccb_h, path, /*priority*/5); 297 csa.ccb_h.func_code = XPT_SASYNC_CB; 298 csa.event_enable = AC_FOUND_DEVICE; 299 csa.callback = ptasync; 300 csa.callback_arg = NULL; 301 xpt_action((union ccb *)&csa); 302 status = csa.ccb_h.status; 303 xpt_free_path(path); 304 } 305 306 if (status != CAM_REQ_CMP) { 307 printf("pt: Failed to attach master async callback " 308 "due to status 0x%x!\n", status); 309 } else { 310 /* If we were successfull, register our devsw */ 311 cdevsw_add(&pt_cdevsw); 312 } 313 } 314 315 static cam_status 316 ptctor(struct cam_periph *periph, void *arg) 317 { 318 struct pt_softc *softc; 319 struct ccb_setasync csa; 320 struct ccb_getdev *cgd; 321 322 cgd = (struct ccb_getdev *)arg; 323 if (periph == NULL) { 324 printf("ptregister: periph was NULL!!\n"); 325 return(CAM_REQ_CMP_ERR); 326 } 327 328 if (cgd == NULL) { 329 printf("ptregister: no getdev CCB, can't register device\n"); 330 return(CAM_REQ_CMP_ERR); 331 } 332 333 softc = (struct pt_softc *)malloc(sizeof(*softc),M_DEVBUF,M_NOWAIT); 334 335 if (softc == NULL) { 336 printf("daregister: Unable to probe new device. " 337 "Unable to allocate softc\n"); 338 return(CAM_REQ_CMP_ERR); 339 } 340 341 bzero(softc, sizeof(*softc)); 342 LIST_INIT(&softc->pending_ccbs); 343 softc->state = PT_STATE_NORMAL; 344 bufq_init(&softc->buf_queue); 345 346 softc->io_timeout = SCSI_PT_DEFAULT_TIMEOUT * 1000; 347 348 periph->softc = softc; 349 350 cam_extend_set(ptperiphs, periph->unit_number, periph); 351 352 /* 353 * The DA driver supports a blocksize, but 354 * we don't know the blocksize until we do 355 * a read capacity. So, set a flag to 356 * indicate that the blocksize is 357 * unavailable right now. We'll clear the 358 * flag as soon as we've done a read capacity. 359 */ 360 devstat_add_entry(&softc->device_stats, "pt", 361 periph->unit_number, 0, 362 DEVSTAT_NO_BLOCKSIZE, 363 cgd->pd_type | DEVSTAT_TYPE_IF_SCSI, 364 DEVSTAT_PRIORITY_OTHER); 365 366 /* 367 * Add async callbacks for bus reset and 368 * bus device reset calls. I don't bother 369 * checking if this fails as, in most cases, 370 * the system will function just fine without 371 * them and the only alternative would be to 372 * not attach the device on failure. 373 */ 374 xpt_setup_ccb(&csa.ccb_h, periph->path, /*priority*/5); 375 csa.ccb_h.func_code = XPT_SASYNC_CB; 376 csa.event_enable = AC_SENT_BDR | AC_BUS_RESET | AC_LOST_DEVICE; 377 csa.callback = ptasync; 378 csa.callback_arg = periph; 379 xpt_action((union ccb *)&csa); 380 381 /* Tell the user we've attached to the device */ 382 xpt_announce_periph(periph, NULL); 383 384 return(CAM_REQ_CMP); 385 } 386 387 static void 388 ptoninvalidate(struct cam_periph *periph) 389 { 390 int s; 391 struct pt_softc *softc; 392 struct buf *q_bp; 393 struct ccb_setasync csa; 394 395 softc = (struct pt_softc *)periph->softc; 396 397 /* 398 * De-register any async callbacks. 399 */ 400 xpt_setup_ccb(&csa.ccb_h, periph->path, 401 /* priority */ 5); 402 csa.ccb_h.func_code = XPT_SASYNC_CB; 403 csa.event_enable = 0; 404 csa.callback = ptasync; 405 csa.callback_arg = periph; 406 xpt_action((union ccb *)&csa); 407 408 softc->flags |= PT_FLAG_DEVICE_INVALID; 409 410 /* 411 * Although the oninvalidate() routines are always called at 412 * splsoftcam, we need to be at splbio() here to keep the buffer 413 * queue from being modified while we traverse it. 414 */ 415 s = splbio(); 416 417 /* 418 * Return all queued I/O with ENXIO. 419 * XXX Handle any transactions queued to the card 420 * with XPT_ABORT_CCB. 421 */ 422 while ((q_bp = bufq_first(&softc->buf_queue)) != NULL){ 423 bufq_remove(&softc->buf_queue, q_bp); 424 q_bp->b_resid = q_bp->b_bcount; 425 q_bp->b_error = ENXIO; 426 q_bp->b_flags |= B_ERROR; 427 biodone(q_bp); 428 } 429 430 splx(s); 431 432 xpt_print_path(periph->path); 433 printf("lost device\n"); 434 } 435 436 static void 437 ptdtor(struct cam_periph *periph) 438 { 439 struct pt_softc *softc; 440 441 softc = (struct pt_softc *)periph->softc; 442 443 devstat_remove_entry(&softc->device_stats); 444 445 cam_extend_release(ptperiphs, periph->unit_number); 446 xpt_print_path(periph->path); 447 printf("removing device entry\n"); 448 free(softc, M_DEVBUF); 449 } 450 451 static void 452 ptasync(void *callback_arg, u_int32_t code, struct cam_path *path, void *arg) 453 { 454 struct cam_periph *periph; 455 456 periph = (struct cam_periph *)callback_arg; 457 switch (code) { 458 case AC_FOUND_DEVICE: 459 { 460 struct ccb_getdev *cgd; 461 cam_status status; 462 463 cgd = (struct ccb_getdev *)arg; 464 465 if (cgd->pd_type != T_PROCESSOR) 466 break; 467 468 /* 469 * Allocate a peripheral instance for 470 * this device and start the probe 471 * process. 472 */ 473 status = cam_periph_alloc(ptctor, ptoninvalidate, ptdtor, 474 ptstart, "pt", CAM_PERIPH_BIO, 475 cgd->ccb_h.path, ptasync, 476 AC_FOUND_DEVICE, cgd); 477 478 if (status != CAM_REQ_CMP 479 && status != CAM_REQ_INPROG) 480 printf("ptasync: Unable to attach to new device " 481 "due to status 0x%x\n", status); 482 break; 483 } 484 case AC_SENT_BDR: 485 case AC_BUS_RESET: 486 { 487 struct pt_softc *softc; 488 struct ccb_hdr *ccbh; 489 int s; 490 491 softc = (struct pt_softc *)periph->softc; 492 s = splsoftcam(); 493 /* 494 * Don't fail on the expected unit attention 495 * that will occur. 496 */ 497 softc->flags |= PT_FLAG_RETRY_UA; 498 for (ccbh = LIST_FIRST(&softc->pending_ccbs); 499 ccbh != NULL; ccbh = LIST_NEXT(ccbh, periph_links.le)) 500 ccbh->ccb_state |= PT_CCB_RETRY_UA; 501 splx(s); 502 /* FALLTHROUGH */ 503 } 504 default: 505 cam_periph_async(periph, code, path, arg); 506 break; 507 } 508 } 509 510 static void 511 ptstart(struct cam_periph *periph, union ccb *start_ccb) 512 { 513 struct pt_softc *softc; 514 struct buf *bp; 515 int s; 516 517 softc = (struct pt_softc *)periph->softc; 518 519 /* 520 * See if there is a buf with work for us to do.. 521 */ 522 s = splbio(); 523 bp = bufq_first(&softc->buf_queue); 524 if (periph->immediate_priority <= periph->pinfo.priority) { 525 CAM_DEBUG_PRINT(CAM_DEBUG_SUBTRACE, 526 ("queuing for immediate ccb\n")); 527 start_ccb->ccb_h.ccb_state = PT_CCB_WAITING; 528 SLIST_INSERT_HEAD(&periph->ccb_list, &start_ccb->ccb_h, 529 periph_links.sle); 530 periph->immediate_priority = CAM_PRIORITY_NONE; 531 splx(s); 532 wakeup(&periph->ccb_list); 533 } else if (bp == NULL) { 534 splx(s); 535 xpt_release_ccb(start_ccb); 536 } else { 537 int oldspl; 538 539 bufq_remove(&softc->buf_queue, bp); 540 541 devstat_start_transaction(&softc->device_stats); 542 543 scsi_send_receive(&start_ccb->csio, 544 /*retries*/4, 545 ptdone, 546 MSG_SIMPLE_Q_TAG, 547 bp->b_flags & B_READ, 548 /*byte2*/0, 549 bp->b_bcount, 550 bp->b_data, 551 /*sense_len*/SSD_FULL_SIZE, 552 /*timeout*/softc->io_timeout); 553 554 start_ccb->ccb_h.ccb_state = PT_CCB_BUFFER_IO; 555 556 /* 557 * Block out any asyncronous callbacks 558 * while we touch the pending ccb list. 559 */ 560 oldspl = splcam(); 561 LIST_INSERT_HEAD(&softc->pending_ccbs, &start_ccb->ccb_h, 562 periph_links.le); 563 splx(oldspl); 564 565 start_ccb->ccb_h.ccb_bp = bp; 566 bp = bufq_first(&softc->buf_queue); 567 splx(s); 568 569 xpt_action(start_ccb); 570 571 if (bp != NULL) { 572 /* Have more work to do, so ensure we stay scheduled */ 573 xpt_schedule(periph, /* XXX priority */1); 574 } 575 } 576 } 577 578 static void 579 ptdone(struct cam_periph *periph, union ccb *done_ccb) 580 { 581 struct pt_softc *softc; 582 struct ccb_scsiio *csio; 583 584 softc = (struct pt_softc *)periph->softc; 585 csio = &done_ccb->csio; 586 switch (csio->ccb_h.ccb_state) { 587 case PT_CCB_BUFFER_IO: 588 case PT_CCB_BUFFER_IO_UA: 589 { 590 struct buf *bp; 591 int oldspl; 592 593 bp = (struct buf *)done_ccb->ccb_h.ccb_bp; 594 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 595 int error; 596 int s; 597 int sf; 598 599 if ((csio->ccb_h.ccb_state & PT_CCB_RETRY_UA) != 0) 600 sf = SF_RETRY_UA; 601 else 602 sf = 0; 603 604 sf |= SF_RETRY_SELTO; 605 606 if ((error = pterror(done_ccb, 0, sf)) == ERESTART) { 607 /* 608 * A retry was scheuled, so 609 * just return. 610 */ 611 return; 612 } 613 if (error != 0) { 614 struct buf *q_bp; 615 616 s = splbio(); 617 618 if (error == ENXIO) { 619 /* 620 * Catastrophic error. Mark our device 621 * as invalid. 622 */ 623 xpt_print_path(periph->path); 624 printf("Invalidating device\n"); 625 softc->flags |= PT_FLAG_DEVICE_INVALID; 626 } 627 628 /* 629 * return all queued I/O with EIO, so that 630 * the client can retry these I/Os in the 631 * proper order should it attempt to recover. 632 */ 633 while ((q_bp = bufq_first(&softc->buf_queue)) 634 != NULL) { 635 bufq_remove(&softc->buf_queue, q_bp); 636 q_bp->b_resid = q_bp->b_bcount; 637 q_bp->b_error = EIO; 638 q_bp->b_flags |= B_ERROR; 639 biodone(q_bp); 640 } 641 splx(s); 642 bp->b_error = error; 643 bp->b_resid = bp->b_bcount; 644 bp->b_flags |= B_ERROR; 645 } else { 646 bp->b_resid = csio->resid; 647 bp->b_error = 0; 648 if (bp->b_resid != 0) { 649 /* Short transfer ??? */ 650 bp->b_flags |= B_ERROR; 651 } 652 } 653 if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 654 cam_release_devq(done_ccb->ccb_h.path, 655 /*relsim_flags*/0, 656 /*reduction*/0, 657 /*timeout*/0, 658 /*getcount_only*/0); 659 } else { 660 bp->b_resid = csio->resid; 661 if (bp->b_resid != 0) 662 bp->b_flags |= B_ERROR; 663 } 664 665 /* 666 * Block out any asyncronous callbacks 667 * while we touch the pending ccb list. 668 */ 669 oldspl = splcam(); 670 LIST_REMOVE(&done_ccb->ccb_h, periph_links.le); 671 splx(oldspl); 672 673 devstat_end_transaction_buf(&softc->device_stats, bp); 674 biodone(bp); 675 break; 676 } 677 case PT_CCB_WAITING: 678 /* Caller will release the CCB */ 679 wakeup(&done_ccb->ccb_h.cbfcnp); 680 return; 681 } 682 xpt_release_ccb(done_ccb); 683 } 684 685 static int 686 pterror(union ccb *ccb, u_int32_t cam_flags, u_int32_t sense_flags) 687 { 688 struct pt_softc *softc; 689 struct cam_periph *periph; 690 691 periph = xpt_path_periph(ccb->ccb_h.path); 692 softc = (struct pt_softc *)periph->softc; 693 694 return(cam_periph_error(ccb, cam_flags, sense_flags, 695 &softc->saved_ccb)); 696 } 697 698 static int 699 ptioctl(dev_t dev, u_long cmd, caddr_t addr, int flag, struct proc *p) 700 { 701 struct cam_periph *periph; 702 struct pt_softc *softc; 703 int unit; 704 int error; 705 706 unit = minor(dev); 707 periph = cam_extend_get(ptperiphs, unit); 708 709 if (periph == NULL) 710 return(ENXIO); 711 712 softc = (struct pt_softc *)periph->softc; 713 714 if ((error = cam_periph_lock(periph, PRIBIO|PCATCH)) != 0) { 715 return (error); /* error code from tsleep */ 716 } 717 718 switch(cmd) { 719 case PTIOCGETTIMEOUT: 720 if (softc->io_timeout >= 1000) 721 *(int *)addr = softc->io_timeout / 1000; 722 else 723 *(int *)addr = 0; 724 break; 725 case PTIOCSETTIMEOUT: 726 { 727 int s; 728 729 if (*(int *)addr < 1) { 730 error = EINVAL; 731 break; 732 } 733 734 s = splsoftcam(); 735 softc->io_timeout = *(int *)addr * 1000; 736 splx(s); 737 738 break; 739 } 740 default: 741 error = cam_periph_ioctl(periph, cmd, addr, pterror); 742 break; 743 } 744 745 cam_periph_unlock(periph); 746 747 return(error); 748 } 749 750 void 751 scsi_send_receive(struct ccb_scsiio *csio, u_int32_t retries, 752 void (*cbfcnp)(struct cam_periph *, union ccb *), 753 u_int tag_action, int readop, u_int byte2, 754 u_int32_t xfer_len, u_int8_t *data_ptr, u_int8_t sense_len, 755 u_int32_t timeout) 756 { 757 struct scsi_send_receive *scsi_cmd; 758 759 scsi_cmd = (struct scsi_send_receive *)&csio->cdb_io.cdb_bytes; 760 scsi_cmd->opcode = readop ? RECEIVE : SEND; 761 scsi_cmd->byte2 = byte2; 762 scsi_ulto3b(xfer_len, scsi_cmd->xfer_len); 763 scsi_cmd->control = 0; 764 765 cam_fill_csio(csio, 766 retries, 767 cbfcnp, 768 /*flags*/readop ? CAM_DIR_IN : CAM_DIR_OUT, 769 tag_action, 770 data_ptr, 771 xfer_len, 772 sense_len, 773 sizeof(*scsi_cmd), 774 timeout); 775 } 776