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 1.22 2007/11/21 21:28:41 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 if (cgd == NULL) 452 break; 453 454 if (SID_TYPE(&cgd->inq_data) != T_PROCESSOR) 455 break; 456 457 /* 458 * Allocate a peripheral instance for 459 * this device and start the probe 460 * process. 461 */ 462 status = cam_periph_alloc(ptctor, ptoninvalidate, ptdtor, 463 ptstart, "pt", CAM_PERIPH_BIO, 464 cgd->ccb_h.path, ptasync, 465 AC_FOUND_DEVICE, cgd); 466 467 if (status != CAM_REQ_CMP 468 && status != CAM_REQ_INPROG) 469 kprintf("ptasync: Unable to attach to new device " 470 "due to status 0x%x\n", status); 471 break; 472 } 473 case AC_SENT_BDR: 474 case AC_BUS_RESET: 475 { 476 struct pt_softc *softc; 477 struct ccb_hdr *ccbh; 478 479 softc = (struct pt_softc *)periph->softc; 480 crit_enter(); 481 /* 482 * Don't fail on the expected unit attention 483 * that will occur. 484 */ 485 softc->flags |= PT_FLAG_RETRY_UA; 486 for (ccbh = LIST_FIRST(&softc->pending_ccbs); 487 ccbh != NULL; ccbh = LIST_NEXT(ccbh, periph_links.le)) 488 ccbh->ccb_state |= PT_CCB_RETRY_UA; 489 crit_exit(); 490 /* FALLTHROUGH */ 491 } 492 default: 493 cam_periph_async(periph, code, path, arg); 494 break; 495 } 496 } 497 498 static void 499 ptstart(struct cam_periph *periph, union ccb *start_ccb) 500 { 501 struct pt_softc *softc; 502 struct buf *bp; 503 struct bio *bio; 504 505 softc = (struct pt_softc *)periph->softc; 506 507 /* 508 * See if there is a buf with work for us to do.. 509 */ 510 crit_enter(); 511 bio = bioq_first(&softc->bio_queue); 512 if (periph->immediate_priority <= periph->pinfo.priority) { 513 CAM_DEBUG_PRINT(CAM_DEBUG_SUBTRACE, 514 ("queuing for immediate ccb\n")); 515 start_ccb->ccb_h.ccb_state = PT_CCB_WAITING; 516 SLIST_INSERT_HEAD(&periph->ccb_list, &start_ccb->ccb_h, 517 periph_links.sle); 518 periph->immediate_priority = CAM_PRIORITY_NONE; 519 crit_exit(); 520 wakeup(&periph->ccb_list); 521 } else if (bio == NULL) { 522 crit_exit(); 523 xpt_release_ccb(start_ccb); 524 } else { 525 bioq_remove(&softc->bio_queue, bio); 526 bp = bio->bio_buf; 527 528 devstat_start_transaction(&softc->device_stats); 529 530 scsi_send_receive(&start_ccb->csio, 531 /*retries*/4, 532 ptdone, 533 MSG_SIMPLE_Q_TAG, 534 (bp->b_cmd == BUF_CMD_READ), 535 /*byte2*/0, 536 bp->b_bcount, 537 bp->b_data, 538 /*sense_len*/SSD_FULL_SIZE, 539 /*timeout*/softc->io_timeout); 540 541 start_ccb->ccb_h.ccb_state = PT_CCB_BUFFER_IO_UA; 542 543 /* 544 * Block out any asyncronous callbacks 545 * while we touch the pending ccb list. 546 */ 547 LIST_INSERT_HEAD(&softc->pending_ccbs, &start_ccb->ccb_h, 548 periph_links.le); 549 550 start_ccb->ccb_h.ccb_bio = bio; 551 bio = bioq_first(&softc->bio_queue); 552 crit_exit(); 553 554 xpt_action(start_ccb); 555 556 if (bio != NULL) { 557 /* Have more work to do, so ensure we stay scheduled */ 558 xpt_schedule(periph, /* XXX priority */1); 559 } 560 } 561 } 562 563 static void 564 ptdone(struct cam_periph *periph, union ccb *done_ccb) 565 { 566 struct pt_softc *softc; 567 struct ccb_scsiio *csio; 568 569 softc = (struct pt_softc *)periph->softc; 570 csio = &done_ccb->csio; 571 switch (csio->ccb_h.ccb_state) { 572 case PT_CCB_BUFFER_IO: 573 case PT_CCB_BUFFER_IO_UA: 574 { 575 struct buf *bp; 576 struct bio *bio; 577 578 bio = (struct bio *)done_ccb->ccb_h.ccb_bio; 579 bp = bio->bio_buf; 580 581 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 582 int error; 583 int sf; 584 585 if ((csio->ccb_h.ccb_state & PT_CCB_RETRY_UA) != 0) 586 sf = SF_RETRY_UA; 587 else 588 sf = 0; 589 590 error = pterror(done_ccb, CAM_RETRY_SELTO, sf); 591 if (error == ERESTART) { 592 /* 593 * A retry was scheuled, so 594 * just return. 595 */ 596 return; 597 } 598 if (error != 0) { 599 struct buf *q_bp; 600 struct bio *q_bio; 601 602 crit_enter(); 603 604 if (error == ENXIO) { 605 /* 606 * Catastrophic error. Mark our device 607 * as invalid. 608 */ 609 xpt_print_path(periph->path); 610 kprintf("Invalidating device\n"); 611 softc->flags |= PT_FLAG_DEVICE_INVALID; 612 } 613 614 /* 615 * return all queued I/O with EIO, so that 616 * the client can retry these I/Os in the 617 * proper order should it attempt to recover. 618 */ 619 while ((q_bio = bioq_first(&softc->bio_queue)) 620 != NULL) { 621 bioq_remove(&softc->bio_queue, q_bio); 622 q_bp = q_bio->bio_buf; 623 q_bp->b_resid = q_bp->b_bcount; 624 q_bp->b_error = EIO; 625 q_bp->b_flags |= B_ERROR; 626 biodone(q_bio); 627 } 628 crit_exit(); 629 bp->b_error = error; 630 bp->b_resid = bp->b_bcount; 631 bp->b_flags |= B_ERROR; 632 } else { 633 bp->b_resid = csio->resid; 634 bp->b_error = 0; 635 if (bp->b_resid != 0) { 636 /* Short transfer ??? */ 637 bp->b_flags |= B_ERROR; 638 } 639 } 640 if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 641 cam_release_devq(done_ccb->ccb_h.path, 642 /*relsim_flags*/0, 643 /*reduction*/0, 644 /*timeout*/0, 645 /*getcount_only*/0); 646 } else { 647 bp->b_resid = csio->resid; 648 if (bp->b_resid != 0) 649 bp->b_flags |= B_ERROR; 650 } 651 652 /* 653 * Block out any asyncronous callbacks 654 * while we touch the pending ccb list. 655 */ 656 crit_enter(); 657 LIST_REMOVE(&done_ccb->ccb_h, periph_links.le); 658 crit_exit(); 659 660 devstat_end_transaction_buf(&softc->device_stats, bp); 661 biodone(bio); 662 break; 663 } 664 case PT_CCB_WAITING: 665 /* Caller will release the CCB */ 666 wakeup(&done_ccb->ccb_h.cbfcnp); 667 return; 668 } 669 xpt_release_ccb(done_ccb); 670 } 671 672 static int 673 pterror(union ccb *ccb, u_int32_t cam_flags, u_int32_t sense_flags) 674 { 675 struct pt_softc *softc; 676 struct cam_periph *periph; 677 678 periph = xpt_path_periph(ccb->ccb_h.path); 679 softc = (struct pt_softc *)periph->softc; 680 681 return(cam_periph_error(ccb, cam_flags, sense_flags, 682 &softc->saved_ccb)); 683 } 684 685 static int 686 ptioctl(struct dev_ioctl_args *ap) 687 { 688 cdev_t dev = ap->a_head.a_dev; 689 caddr_t addr = ap->a_data; 690 struct cam_periph *periph; 691 struct pt_softc *softc; 692 int unit; 693 int error; 694 695 unit = minor(dev); 696 periph = cam_extend_get(ptperiphs, unit); 697 698 if (periph == NULL) 699 return(ENXIO); 700 701 softc = (struct pt_softc *)periph->softc; 702 703 if ((error = cam_periph_lock(periph, PCATCH)) != 0) { 704 return (error); /* error code from tsleep */ 705 } 706 707 switch(ap->a_cmd) { 708 case PTIOCGETTIMEOUT: 709 if (softc->io_timeout >= 1000) 710 *(int *)addr = softc->io_timeout / 1000; 711 else 712 *(int *)addr = 0; 713 break; 714 case PTIOCSETTIMEOUT: 715 { 716 if (*(int *)addr < 1) { 717 error = EINVAL; 718 break; 719 } 720 721 crit_enter(); 722 softc->io_timeout = *(int *)addr * 1000; 723 crit_exit(); 724 725 break; 726 } 727 default: 728 error = cam_periph_ioctl(periph, ap->a_cmd, addr, pterror); 729 break; 730 } 731 732 cam_periph_unlock(periph); 733 734 return(error); 735 } 736 737 void 738 scsi_send_receive(struct ccb_scsiio *csio, u_int32_t retries, 739 void (*cbfcnp)(struct cam_periph *, union ccb *), 740 u_int tag_action, int readop, u_int byte2, 741 u_int32_t xfer_len, u_int8_t *data_ptr, u_int8_t sense_len, 742 u_int32_t timeout) 743 { 744 struct scsi_send_receive *scsi_cmd; 745 746 scsi_cmd = (struct scsi_send_receive *)&csio->cdb_io.cdb_bytes; 747 scsi_cmd->opcode = readop ? RECEIVE : SEND; 748 scsi_cmd->byte2 = byte2; 749 scsi_ulto3b(xfer_len, scsi_cmd->xfer_len); 750 scsi_cmd->control = 0; 751 752 cam_fill_csio(csio, 753 retries, 754 cbfcnp, 755 /*flags*/readop ? CAM_DIR_IN : CAM_DIR_OUT, 756 tag_action, 757 data_ptr, 758 xfer_len, 759 sense_len, 760 sizeof(*scsi_cmd), 761 timeout); 762 } 763