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: src/sys/cam/scsi/scsi_pt.c,v 1.17 2000/01/17 06:27:37 mjacob Exp $ 29 * $DragonFly: src/sys/bus/cam/scsi/scsi_pt.c,v 1.21 2007/11/18 19:27:29 pavalos Exp $ 30 */ 31 32 #include <sys/param.h> 33 #include <sys/queue.h> 34 #include <sys/systm.h> 35 #include <sys/kernel.h> 36 #include <sys/types.h> 37 #include <sys/buf.h> 38 #include <sys/devicestat.h> 39 #include <sys/malloc.h> 40 #include <sys/conf.h> 41 #include <sys/ptio.h> 42 #include <sys/buf2.h> 43 #include <sys/thread2.h> 44 45 #include "../cam.h" 46 #include "../cam_ccb.h" 47 #include "../cam_extend.h" 48 #include "../cam_periph.h" 49 #include "../cam_xpt_periph.h" 50 #include "../cam_debug.h" 51 52 #include "scsi_all.h" 53 #include "scsi_message.h" 54 #include "scsi_pt.h" 55 56 #include "opt_pt.h" 57 58 typedef enum { 59 PT_STATE_PROBE, 60 PT_STATE_NORMAL 61 } pt_state; 62 63 typedef enum { 64 PT_FLAG_NONE = 0x00, 65 PT_FLAG_OPEN = 0x01, 66 PT_FLAG_DEVICE_INVALID = 0x02, 67 PT_FLAG_RETRY_UA = 0x04 68 } pt_flags; 69 70 typedef enum { 71 PT_CCB_BUFFER_IO = 0x01, 72 PT_CCB_WAITING = 0x02, 73 PT_CCB_RETRY_UA = 0x04, 74 PT_CCB_BUFFER_IO_UA = PT_CCB_BUFFER_IO|PT_CCB_RETRY_UA 75 } pt_ccb_state; 76 77 /* Offsets into our private area for storing information */ 78 #define ccb_state ppriv_field0 79 #define ccb_bio ppriv_ptr1 80 81 struct pt_softc { 82 struct bio_queue_head bio_queue; 83 struct devstat device_stats; 84 LIST_HEAD(, ccb_hdr) pending_ccbs; 85 pt_state state; 86 pt_flags flags; 87 union ccb saved_ccb; 88 int io_timeout; 89 cdev_t dev; 90 }; 91 92 static d_open_t ptopen; 93 static d_close_t ptclose; 94 static d_strategy_t ptstrategy; 95 static periph_init_t ptinit; 96 static void ptasync(void *callback_arg, u_int32_t code, 97 struct cam_path *path, void *arg); 98 static periph_ctor_t ptctor; 99 static periph_oninv_t ptoninvalidate; 100 static periph_dtor_t ptdtor; 101 static periph_start_t ptstart; 102 static void ptdone(struct cam_periph *periph, 103 union ccb *done_ccb); 104 static d_ioctl_t ptioctl; 105 static int pterror(union ccb *ccb, u_int32_t cam_flags, 106 u_int32_t sense_flags); 107 108 void scsi_send_receive(struct ccb_scsiio *csio, u_int32_t retries, 109 void (*cbfcnp)(struct cam_periph *, union ccb *), 110 u_int tag_action, int readop, u_int byte2, 111 u_int32_t xfer_len, u_int8_t *data_ptr, 112 u_int8_t sense_len, u_int32_t timeout); 113 114 static struct periph_driver ptdriver = 115 { 116 ptinit, "pt", 117 TAILQ_HEAD_INITIALIZER(ptdriver.units), /* generation */ 0 118 }; 119 120 PERIPHDRIVER_DECLARE(pt, ptdriver); 121 122 #define PT_CDEV_MAJOR 61 123 124 static struct dev_ops pt_ops = { 125 { "pt", PT_CDEV_MAJOR, 0 }, 126 .d_open = ptopen, 127 .d_close = ptclose, 128 .d_read = physread, 129 .d_write = physwrite, 130 .d_ioctl = ptioctl, 131 .d_strategy = ptstrategy, 132 }; 133 134 static struct extend_array *ptperiphs; 135 136 #ifndef SCSI_PT_DEFAULT_TIMEOUT 137 #define SCSI_PT_DEFAULT_TIMEOUT 60 138 #endif 139 140 static int 141 ptopen(struct dev_open_args *ap) 142 { 143 cdev_t dev = ap->a_head.a_dev; 144 struct cam_periph *periph; 145 struct pt_softc *softc; 146 int unit; 147 int error; 148 149 unit = minor(dev); 150 periph = cam_extend_get(ptperiphs, unit); 151 if (periph == NULL) 152 return (ENXIO); 153 154 softc = (struct pt_softc *)periph->softc; 155 156 crit_enter(); 157 if (softc->flags & PT_FLAG_DEVICE_INVALID) { 158 crit_exit(); 159 return(ENXIO); 160 } 161 162 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, 163 ("ptopen: dev=%s (unit %d)\n", devtoname(dev), unit)); 164 165 if ((error = cam_periph_lock(periph, PCATCH)) != 0) { 166 crit_exit(); 167 return (error); /* error code from tsleep */ 168 } 169 170 crit_exit(); 171 172 if ((softc->flags & PT_FLAG_OPEN) == 0) { 173 if (cam_periph_acquire(periph) != CAM_REQ_CMP) 174 error = ENXIO; 175 else 176 softc->flags |= PT_FLAG_OPEN; 177 } else 178 error = EBUSY; 179 180 cam_periph_unlock(periph); 181 return (error); 182 } 183 184 static int 185 ptclose(struct dev_close_args *ap) 186 { 187 cdev_t dev = ap->a_head.a_dev; 188 struct cam_periph *periph; 189 struct pt_softc *softc; 190 int unit; 191 int error; 192 193 unit = minor(dev); 194 periph = cam_extend_get(ptperiphs, unit); 195 if (periph == NULL) 196 return (ENXIO); 197 198 softc = (struct pt_softc *)periph->softc; 199 200 if ((error = cam_periph_lock(periph, 0)) != 0) 201 return (error); /* error code from tsleep */ 202 203 softc->flags &= ~PT_FLAG_OPEN; 204 cam_periph_unlock(periph); 205 cam_periph_release(periph); 206 return (0); 207 } 208 209 /* 210 * Actually translate the requested transfer into one the physical driver 211 * can understand. The transfer is described by a buf and will include 212 * only one physical transfer. 213 */ 214 static int 215 ptstrategy(struct dev_strategy_args *ap) 216 { 217 cdev_t dev = ap->a_head.a_dev; 218 struct bio *bio = ap->a_bio; 219 struct buf *bp = bio->bio_buf; 220 struct cam_periph *periph; 221 struct pt_softc *softc; 222 u_int unit; 223 224 unit = minor(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 crit_enter(); 238 239 /* 240 * If the device has been made invalid, error out 241 */ 242 if ((softc->flags & PT_FLAG_DEVICE_INVALID)) { 243 crit_exit(); 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 bioq_insert_tail(&softc->bio_queue, bio); 252 253 crit_exit(); 254 255 /* 256 * Schedule ourselves for performing the work. 257 */ 258 xpt_schedule(periph, /* XXX priority */1); 259 260 return(0); 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(bio); 269 return(0); 270 } 271 272 static void 273 ptinit(void) 274 { 275 cam_status status; 276 struct cam_path *path; 277 278 /* 279 * Create our extend array for storing the devices we attach to. 280 */ 281 ptperiphs = cam_extend_new(); 282 if (ptperiphs == NULL) { 283 kprintf("pt: Failed to alloc extend array!\n"); 284 return; 285 } 286 287 /* 288 * Install a global async callback. This callback will 289 * receive async callbacks like "new device found". 290 */ 291 status = xpt_create_path(&path, /*periph*/NULL, CAM_XPT_PATH_ID, 292 CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD); 293 294 if (status == CAM_REQ_CMP) { 295 struct ccb_setasync csa; 296 297 xpt_setup_ccb(&csa.ccb_h, path, /*priority*/5); 298 csa.ccb_h.func_code = XPT_SASYNC_CB; 299 csa.event_enable = AC_FOUND_DEVICE; 300 csa.callback = ptasync; 301 csa.callback_arg = NULL; 302 xpt_action((union ccb *)&csa); 303 status = csa.ccb_h.status; 304 xpt_free_path(path); 305 } 306 307 if (status != CAM_REQ_CMP) { 308 kprintf("pt: Failed to attach master async callback " 309 "due to status 0x%x!\n", status); 310 } 311 } 312 313 static cam_status 314 ptctor(struct cam_periph *periph, void *arg) 315 { 316 struct pt_softc *softc; 317 struct ccb_setasync csa; 318 struct ccb_getdev *cgd; 319 320 cgd = (struct ccb_getdev *)arg; 321 if (periph == NULL) { 322 kprintf("ptregister: periph was NULL!!\n"); 323 return(CAM_REQ_CMP_ERR); 324 } 325 326 if (cgd == NULL) { 327 kprintf("ptregister: no getdev CCB, can't register device\n"); 328 return(CAM_REQ_CMP_ERR); 329 } 330 331 softc = kmalloc(sizeof(*softc), M_DEVBUF, M_INTWAIT | M_ZERO); 332 LIST_INIT(&softc->pending_ccbs); 333 softc->state = PT_STATE_NORMAL; 334 bioq_init(&softc->bio_queue); 335 336 softc->io_timeout = SCSI_PT_DEFAULT_TIMEOUT * 1000; 337 338 periph->softc = softc; 339 340 cam_extend_set(ptperiphs, periph->unit_number, periph); 341 342 devstat_add_entry(&softc->device_stats, "pt", 343 periph->unit_number, 0, 344 DEVSTAT_NO_BLOCKSIZE, 345 SID_TYPE(&cgd->inq_data) | DEVSTAT_TYPE_IF_SCSI, 346 DEVSTAT_PRIORITY_OTHER); 347 348 dev_ops_add(&pt_ops, -1, periph->unit_number); 349 make_dev(&pt_ops, periph->unit_number, UID_ROOT, 350 GID_OPERATOR, 0600, "%s%d", periph->periph_name, 351 periph->unit_number); 352 /* 353 * Add async callbacks for bus reset and 354 * bus device reset calls. I don't bother 355 * checking if this fails as, in most cases, 356 * the system will function just fine without 357 * them and the only alternative would be to 358 * not attach the device on failure. 359 */ 360 xpt_setup_ccb(&csa.ccb_h, periph->path, /*priority*/5); 361 csa.ccb_h.func_code = XPT_SASYNC_CB; 362 csa.event_enable = AC_SENT_BDR | AC_BUS_RESET | AC_LOST_DEVICE; 363 csa.callback = ptasync; 364 csa.callback_arg = periph; 365 xpt_action((union ccb *)&csa); 366 367 /* Tell the user we've attached to the device */ 368 xpt_announce_periph(periph, NULL); 369 370 return(CAM_REQ_CMP); 371 } 372 373 static void 374 ptoninvalidate(struct cam_periph *periph) 375 { 376 struct pt_softc *softc; 377 struct bio *q_bio; 378 struct buf *q_bp; 379 struct ccb_setasync csa; 380 381 softc = (struct pt_softc *)periph->softc; 382 383 /* 384 * De-register any async callbacks. 385 */ 386 xpt_setup_ccb(&csa.ccb_h, periph->path, 387 /* priority */ 5); 388 csa.ccb_h.func_code = XPT_SASYNC_CB; 389 csa.event_enable = 0; 390 csa.callback = ptasync; 391 csa.callback_arg = periph; 392 xpt_action((union ccb *)&csa); 393 394 softc->flags |= PT_FLAG_DEVICE_INVALID; 395 396 /* 397 * We need to be in a critical section here to keep the buffer 398 * queue from being modified while we traverse it. 399 */ 400 crit_enter(); 401 402 /* 403 * Return all queued I/O with ENXIO. 404 * XXX Handle any transactions queued to the card 405 * with XPT_ABORT_CCB. 406 */ 407 while ((q_bio = bioq_first(&softc->bio_queue)) != NULL){ 408 bioq_remove(&softc->bio_queue, q_bio); 409 q_bp = q_bio->bio_buf; 410 q_bp->b_resid = q_bp->b_bcount; 411 q_bp->b_error = ENXIO; 412 q_bp->b_flags |= B_ERROR; 413 biodone(q_bio); 414 } 415 416 crit_exit(); 417 418 xpt_print_path(periph->path); 419 kprintf("lost device\n"); 420 } 421 422 static void 423 ptdtor(struct cam_periph *periph) 424 { 425 struct pt_softc *softc; 426 427 softc = (struct pt_softc *)periph->softc; 428 429 devstat_remove_entry(&softc->device_stats); 430 431 cam_extend_release(ptperiphs, periph->unit_number); 432 xpt_print_path(periph->path); 433 kprintf("removing device entry\n"); 434 dev_ops_remove(&pt_ops, -1, periph->unit_number); 435 kfree(softc, M_DEVBUF); 436 } 437 438 static void 439 ptasync(void *callback_arg, u_int32_t code, struct cam_path *path, void *arg) 440 { 441 struct cam_periph *periph; 442 443 periph = (struct cam_periph *)callback_arg; 444 switch (code) { 445 case AC_FOUND_DEVICE: 446 { 447 struct ccb_getdev *cgd; 448 cam_status status; 449 450 cgd = (struct ccb_getdev *)arg; 451 452 if (SID_TYPE(&cgd->inq_data) != T_PROCESSOR) 453 break; 454 455 /* 456 * Allocate a peripheral instance for 457 * this device and start the probe 458 * process. 459 */ 460 status = cam_periph_alloc(ptctor, ptoninvalidate, ptdtor, 461 ptstart, "pt", CAM_PERIPH_BIO, 462 cgd->ccb_h.path, ptasync, 463 AC_FOUND_DEVICE, cgd); 464 465 if (status != CAM_REQ_CMP 466 && status != CAM_REQ_INPROG) 467 kprintf("ptasync: Unable to attach to new device " 468 "due to status 0x%x\n", status); 469 break; 470 } 471 case AC_SENT_BDR: 472 case AC_BUS_RESET: 473 { 474 struct pt_softc *softc; 475 struct ccb_hdr *ccbh; 476 477 softc = (struct pt_softc *)periph->softc; 478 crit_enter(); 479 /* 480 * Don't fail on the expected unit attention 481 * that will occur. 482 */ 483 softc->flags |= PT_FLAG_RETRY_UA; 484 for (ccbh = LIST_FIRST(&softc->pending_ccbs); 485 ccbh != NULL; ccbh = LIST_NEXT(ccbh, periph_links.le)) 486 ccbh->ccb_state |= PT_CCB_RETRY_UA; 487 crit_exit(); 488 /* FALLTHROUGH */ 489 } 490 default: 491 cam_periph_async(periph, code, path, arg); 492 break; 493 } 494 } 495 496 static void 497 ptstart(struct cam_periph *periph, union ccb *start_ccb) 498 { 499 struct pt_softc *softc; 500 struct buf *bp; 501 struct bio *bio; 502 503 softc = (struct pt_softc *)periph->softc; 504 505 /* 506 * See if there is a buf with work for us to do.. 507 */ 508 crit_enter(); 509 bio = bioq_first(&softc->bio_queue); 510 if (periph->immediate_priority <= periph->pinfo.priority) { 511 CAM_DEBUG_PRINT(CAM_DEBUG_SUBTRACE, 512 ("queuing for immediate ccb\n")); 513 start_ccb->ccb_h.ccb_state = PT_CCB_WAITING; 514 SLIST_INSERT_HEAD(&periph->ccb_list, &start_ccb->ccb_h, 515 periph_links.sle); 516 periph->immediate_priority = CAM_PRIORITY_NONE; 517 crit_exit(); 518 wakeup(&periph->ccb_list); 519 } else if (bio == NULL) { 520 crit_exit(); 521 xpt_release_ccb(start_ccb); 522 } else { 523 bioq_remove(&softc->bio_queue, bio); 524 bp = bio->bio_buf; 525 526 devstat_start_transaction(&softc->device_stats); 527 528 scsi_send_receive(&start_ccb->csio, 529 /*retries*/4, 530 ptdone, 531 MSG_SIMPLE_Q_TAG, 532 (bp->b_cmd == BUF_CMD_READ), 533 /*byte2*/0, 534 bp->b_bcount, 535 bp->b_data, 536 /*sense_len*/SSD_FULL_SIZE, 537 /*timeout*/softc->io_timeout); 538 539 start_ccb->ccb_h.ccb_state = PT_CCB_BUFFER_IO_UA; 540 541 /* 542 * Block out any asyncronous callbacks 543 * while we touch the pending ccb list. 544 */ 545 LIST_INSERT_HEAD(&softc->pending_ccbs, &start_ccb->ccb_h, 546 periph_links.le); 547 548 start_ccb->ccb_h.ccb_bio = bio; 549 bio = bioq_first(&softc->bio_queue); 550 crit_exit(); 551 552 xpt_action(start_ccb); 553 554 if (bio != NULL) { 555 /* Have more work to do, so ensure we stay scheduled */ 556 xpt_schedule(periph, /* XXX priority */1); 557 } 558 } 559 } 560 561 static void 562 ptdone(struct cam_periph *periph, union ccb *done_ccb) 563 { 564 struct pt_softc *softc; 565 struct ccb_scsiio *csio; 566 567 softc = (struct pt_softc *)periph->softc; 568 csio = &done_ccb->csio; 569 switch (csio->ccb_h.ccb_state) { 570 case PT_CCB_BUFFER_IO: 571 case PT_CCB_BUFFER_IO_UA: 572 { 573 struct buf *bp; 574 struct bio *bio; 575 576 bio = (struct bio *)done_ccb->ccb_h.ccb_bio; 577 bp = bio->bio_buf; 578 579 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 580 int error; 581 int sf; 582 583 if ((csio->ccb_h.ccb_state & PT_CCB_RETRY_UA) != 0) 584 sf = SF_RETRY_UA; 585 else 586 sf = 0; 587 588 error = pterror(done_ccb, CAM_RETRY_SELTO, sf); 589 if (error == ERESTART) { 590 /* 591 * A retry was scheuled, so 592 * just return. 593 */ 594 return; 595 } 596 if (error != 0) { 597 struct buf *q_bp; 598 struct bio *q_bio; 599 600 crit_enter(); 601 602 if (error == ENXIO) { 603 /* 604 * Catastrophic error. Mark our device 605 * as invalid. 606 */ 607 xpt_print_path(periph->path); 608 kprintf("Invalidating device\n"); 609 softc->flags |= PT_FLAG_DEVICE_INVALID; 610 } 611 612 /* 613 * return all queued I/O with EIO, so that 614 * the client can retry these I/Os in the 615 * proper order should it attempt to recover. 616 */ 617 while ((q_bio = bioq_first(&softc->bio_queue)) 618 != NULL) { 619 bioq_remove(&softc->bio_queue, q_bio); 620 q_bp = q_bio->bio_buf; 621 q_bp->b_resid = q_bp->b_bcount; 622 q_bp->b_error = EIO; 623 q_bp->b_flags |= B_ERROR; 624 biodone(q_bio); 625 } 626 crit_exit(); 627 bp->b_error = error; 628 bp->b_resid = bp->b_bcount; 629 bp->b_flags |= B_ERROR; 630 } else { 631 bp->b_resid = csio->resid; 632 bp->b_error = 0; 633 if (bp->b_resid != 0) { 634 /* Short transfer ??? */ 635 bp->b_flags |= B_ERROR; 636 } 637 } 638 if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 639 cam_release_devq(done_ccb->ccb_h.path, 640 /*relsim_flags*/0, 641 /*reduction*/0, 642 /*timeout*/0, 643 /*getcount_only*/0); 644 } else { 645 bp->b_resid = csio->resid; 646 if (bp->b_resid != 0) 647 bp->b_flags |= B_ERROR; 648 } 649 650 /* 651 * Block out any asyncronous callbacks 652 * while we touch the pending ccb list. 653 */ 654 crit_enter(); 655 LIST_REMOVE(&done_ccb->ccb_h, periph_links.le); 656 crit_exit(); 657 658 devstat_end_transaction_buf(&softc->device_stats, bp); 659 biodone(bio); 660 break; 661 } 662 case PT_CCB_WAITING: 663 /* Caller will release the CCB */ 664 wakeup(&done_ccb->ccb_h.cbfcnp); 665 return; 666 } 667 xpt_release_ccb(done_ccb); 668 } 669 670 static int 671 pterror(union ccb *ccb, u_int32_t cam_flags, u_int32_t sense_flags) 672 { 673 struct pt_softc *softc; 674 struct cam_periph *periph; 675 676 periph = xpt_path_periph(ccb->ccb_h.path); 677 softc = (struct pt_softc *)periph->softc; 678 679 return(cam_periph_error(ccb, cam_flags, sense_flags, 680 &softc->saved_ccb)); 681 } 682 683 static int 684 ptioctl(struct dev_ioctl_args *ap) 685 { 686 cdev_t dev = ap->a_head.a_dev; 687 caddr_t addr = ap->a_data; 688 struct cam_periph *periph; 689 struct pt_softc *softc; 690 int unit; 691 int error; 692 693 unit = minor(dev); 694 periph = cam_extend_get(ptperiphs, unit); 695 696 if (periph == NULL) 697 return(ENXIO); 698 699 softc = (struct pt_softc *)periph->softc; 700 701 if ((error = cam_periph_lock(periph, PCATCH)) != 0) { 702 return (error); /* error code from tsleep */ 703 } 704 705 switch(ap->a_cmd) { 706 case PTIOCGETTIMEOUT: 707 if (softc->io_timeout >= 1000) 708 *(int *)addr = softc->io_timeout / 1000; 709 else 710 *(int *)addr = 0; 711 break; 712 case PTIOCSETTIMEOUT: 713 { 714 if (*(int *)addr < 1) { 715 error = EINVAL; 716 break; 717 } 718 719 crit_enter(); 720 softc->io_timeout = *(int *)addr * 1000; 721 crit_exit(); 722 723 break; 724 } 725 default: 726 error = cam_periph_ioctl(periph, ap->a_cmd, addr, pterror); 727 break; 728 } 729 730 cam_periph_unlock(periph); 731 732 return(error); 733 } 734 735 void 736 scsi_send_receive(struct ccb_scsiio *csio, u_int32_t retries, 737 void (*cbfcnp)(struct cam_periph *, union ccb *), 738 u_int tag_action, int readop, u_int byte2, 739 u_int32_t xfer_len, u_int8_t *data_ptr, u_int8_t sense_len, 740 u_int32_t timeout) 741 { 742 struct scsi_send_receive *scsi_cmd; 743 744 scsi_cmd = (struct scsi_send_receive *)&csio->cdb_io.cdb_bytes; 745 scsi_cmd->opcode = readop ? RECEIVE : SEND; 746 scsi_cmd->byte2 = byte2; 747 scsi_ulto3b(xfer_len, scsi_cmd->xfer_len); 748 scsi_cmd->control = 0; 749 750 cam_fill_csio(csio, 751 retries, 752 cbfcnp, 753 /*flags*/readop ? CAM_DIR_IN : CAM_DIR_OUT, 754 tag_action, 755 data_ptr, 756 xfer_len, 757 sense_len, 758 sizeof(*scsi_cmd), 759 timeout); 760 } 761