1 /* 2 * $Id: scsi_sa.c,v 1.27 1999/05/30 16:51:07 phk Exp $ 3 * 4 * Implementation of SCSI Sequential Access Peripheral driver for CAM. 5 * 6 * Copyright (c) 1997 Justin T. Gibbs 7 * All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions, and the following disclaimer, 14 * without modification, immediately at the beginning of the file. 15 * 2. The name of the author may not be used to endorse or promote products 16 * derived from this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR 22 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 * 30 * 31 * Substantial subsequent modifications 32 * Copyright (c) 1999 Matthew Jacob 33 * NASA Ames Research Center, 34 * Feral Software 35 */ 36 37 #include <sys/param.h> 38 #include <sys/queue.h> 39 #ifdef KERNEL 40 #include <sys/systm.h> 41 #include <sys/kernel.h> 42 #endif 43 #include <sys/types.h> 44 #include <sys/buf.h> 45 #include <sys/malloc.h> 46 #include <sys/mtio.h> 47 #include <sys/conf.h> 48 #include <sys/buf.h> 49 #include <sys/devicestat.h> 50 #include <machine/limits.h> 51 52 #ifndef KERNEL 53 #include <stdio.h> 54 #include <string.h> 55 #endif 56 57 #include <cam/cam.h> 58 #include <cam/cam_ccb.h> 59 #include <cam/cam_extend.h> 60 #include <cam/cam_periph.h> 61 #include <cam/cam_xpt_periph.h> 62 #include <cam/cam_debug.h> 63 64 #include <cam/scsi/scsi_all.h> 65 #include <cam/scsi/scsi_message.h> 66 #include <cam/scsi/scsi_sa.h> 67 68 #ifdef KERNEL 69 70 #include <opt_sa.h> 71 72 #ifndef SA_SPACE_TIMEOUT 73 #define SA_SPACE_TIMEOUT 1 * 60 74 #endif 75 #ifndef SA_REWIND_TIMEOUT 76 #define SA_REWIND_TIMEOUT 2 * 60 77 #endif 78 #ifndef SA_ERASE_TIMEOUT 79 #define SA_ERASE_TIMEOUT 4 * 60 80 #endif 81 82 /* 83 * Default to old FreeBSD behaviour of 2 filemarks 84 * at EOD for all (except QIC) devices. 85 */ 86 #ifndef SA_2FM_AT_EOD 87 #define SA_2FM_AT_EOD 1 88 #endif 89 90 #ifndef UNUSED_PARAMETER 91 #define UNUSED_PARAMETER(x) x = x 92 #endif 93 94 typedef enum { 95 SA_STATE_NORMAL, SA_STATE_ABNORMAL 96 } sa_state; 97 98 typedef enum { 99 SA_CCB_BUFFER_IO, 100 SA_CCB_WAITING 101 } sa_ccb_types; 102 103 #define ccb_type ppriv_field0 104 #define ccb_bp ppriv_ptr1 105 106 typedef enum { 107 SA_FLAG_OPEN = 0x0001, 108 SA_FLAG_FIXED = 0x0002, 109 SA_FLAG_TAPE_LOCKED = 0x0004, 110 SA_FLAG_TAPE_MOUNTED = 0x0008, 111 SA_FLAG_TAPE_WP = 0x0010, 112 SA_FLAG_TAPE_WRITTEN = 0x0020, 113 SA_FLAG_EOM_PENDING = 0x0040, 114 SA_FLAG_EIO_PENDING = 0x0080, 115 SA_FLAG_EOF_PENDING = 0x0100, 116 SA_FLAG_ERR_PENDING = (SA_FLAG_EOM_PENDING|SA_FLAG_EIO_PENDING| 117 SA_FLAG_EOF_PENDING), 118 SA_FLAG_INVALID = 0x0200, 119 SA_FLAG_COMP_ENABLED = 0x0400, 120 SA_FLAG_COMP_SUPP = 0x0800, 121 SA_FLAG_COMP_UNSUPP = 0x1000, 122 SA_FLAG_TAPE_FROZEN = 0x2000 123 } sa_flags; 124 125 typedef enum { 126 SA_MODE_REWIND = 0x00, 127 SA_MODE_NOREWIND = 0x01, 128 SA_MODE_OFFLINE = 0x02 129 } sa_mode; 130 131 typedef enum { 132 SA_PARAM_NONE = 0x00, 133 SA_PARAM_BLOCKSIZE = 0x01, 134 SA_PARAM_DENSITY = 0x02, 135 SA_PARAM_COMPRESSION = 0x04, 136 SA_PARAM_BUFF_MODE = 0x08, 137 SA_PARAM_NUMBLOCKS = 0x10, 138 SA_PARAM_WP = 0x20, 139 SA_PARAM_SPEED = 0x40, 140 SA_PARAM_ALL = 0x7f 141 } sa_params; 142 143 typedef enum { 144 SA_QUIRK_NONE = 0x00, 145 SA_QUIRK_NOCOMP = 0x01, /* can't deal with compression at all */ 146 SA_QUIRK_FIXED = 0x02, /* force fixed mode */ 147 SA_QUIRK_VARIABLE = 0x04, /* force variable mode */ 148 SA_QUIRK_2FM = 0x08, /* Needs Two File Marks at EOD */ 149 SA_QUIRK_1FM = 0x10 /* No more than 1 File Mark at EOD */ 150 } sa_quirks; 151 152 struct sa_softc { 153 sa_state state; 154 sa_flags flags; 155 sa_quirks quirks; 156 struct buf_queue_head buf_queue; 157 int queue_count; 158 struct devstat device_stats; 159 int blk_gran; 160 int blk_mask; 161 int blk_shift; 162 u_int32_t max_blk; 163 u_int32_t min_blk; 164 u_int32_t comp_algorithm; 165 u_int32_t saved_comp_algorithm; 166 u_int32_t media_blksize; 167 u_int32_t last_media_blksize; 168 u_int32_t media_numblks; 169 u_int8_t media_density; 170 u_int8_t speed; 171 u_int8_t scsi_rev; 172 u_int8_t dsreg; /* mtio mt_dsreg, redux */ 173 int buffer_mode; 174 int filemarks; 175 union ccb saved_ccb; 176 177 /* 178 * Relative to BOT Location. 179 */ 180 daddr_t fileno; 181 daddr_t blkno; 182 183 /* 184 * Latched Error Info 185 */ 186 struct { 187 struct scsi_sense_data _last_io_sense; 188 u_int32_t _last_io_resid; 189 u_int8_t _last_io_cdb[CAM_MAX_CDBLEN]; 190 struct scsi_sense_data _last_ctl_sense; 191 u_int32_t _last_ctl_resid; 192 u_int8_t _last_ctl_cdb[CAM_MAX_CDBLEN]; 193 #define last_io_sense errinfo._last_io_sense 194 #define last_io_resid errinfo._last_io_resid 195 #define last_io_cdb errinfo._last_io_cdb 196 #define last_ctl_sense errinfo._last_ctl_sense 197 #define last_ctl_resid errinfo._last_ctl_resid 198 #define last_ctl_cdb errinfo._last_ctl_cdb 199 } errinfo; 200 /* 201 * Misc other flags/state 202 */ 203 u_int32_t 204 : 31, 205 ctrl_mode : 1; /* control device open */ 206 }; 207 208 struct sa_quirk_entry { 209 struct scsi_inquiry_pattern inq_pat; /* matching pattern */ 210 sa_quirks quirks; /* specific quirk type */ 211 u_int32_t prefblk; /* preferred blocksize when in fixed mode */ 212 }; 213 214 static struct sa_quirk_entry sa_quirk_table[] = 215 { 216 { 217 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 218 "Python 25601*", "*"}, SA_QUIRK_NOCOMP, 0 219 }, 220 { 221 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 222 "VIPER 150*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 223 }, 224 { 225 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 226 "VIPER 2525*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 1024 227 }, 228 { 229 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 230 "T20*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 231 }, 232 { 233 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 234 "T4000*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 235 }, 236 { 237 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 238 "HP-88780*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 239 }, 240 { 241 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "KENNEDY", 242 "*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 243 }, 244 { 245 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "M4 DATA", 246 "123107 SCSI*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 247 }, 248 { 249 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 250 " TDC 3600", "U07:"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 251 }, 252 { 253 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 254 " TDC 3800", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 255 }, 256 { 257 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 258 " TDC 4200", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 259 }, 260 { 261 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 262 " SLR*", "*"}, SA_QUIRK_1FM, 0 263 }, 264 { 265 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "WANGTEK", 266 "5525ES*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 267 }, 268 { 269 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "WANGTEK", 270 "51000*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 1024 271 } 272 }; 273 274 static d_open_t saopen; 275 static d_close_t saclose; 276 static d_strategy_t sastrategy; 277 static d_ioctl_t saioctl; 278 static periph_init_t sainit; 279 static periph_ctor_t saregister; 280 static periph_oninv_t saoninvalidate; 281 static periph_dtor_t sacleanup; 282 static periph_start_t sastart; 283 static void saasync(void *callback_arg, u_int32_t code, 284 struct cam_path *path, void *arg); 285 static void sadone(struct cam_periph *periph, 286 union ccb *start_ccb); 287 static int saerror(union ccb *ccb, u_int32_t cam_flags, 288 u_int32_t sense_flags); 289 static int sacheckeod(struct cam_periph *periph); 290 static int sagetparams(struct cam_periph *periph, 291 sa_params params_to_get, 292 u_int32_t *blocksize, u_int8_t *density, 293 u_int32_t *numblocks, int *buff_mode, 294 u_int8_t *write_protect, u_int8_t *speed, 295 int *comp_supported, int *comp_enabled, 296 u_int32_t *comp_algorithm, 297 sa_comp_t *comp_page); 298 static int sasetparams(struct cam_periph *periph, 299 sa_params params_to_set, 300 u_int32_t blocksize, u_int8_t density, 301 u_int32_t comp_algorithm, 302 u_int32_t sense_flags); 303 static void saprevent(struct cam_periph *periph, int action); 304 static int sarewind(struct cam_periph *periph); 305 static int saspace(struct cam_periph *periph, int count, 306 scsi_space_code code); 307 static int samount(struct cam_periph *, int, dev_t); 308 static int saretension(struct cam_periph *periph); 309 static int sareservereleaseunit(struct cam_periph *periph, 310 int reserve); 311 static int saloadunload(struct cam_periph *periph, int load); 312 static int saerase(struct cam_periph *periph, int longerase); 313 static int sawritefilemarks(struct cam_periph *periph, 314 int nmarks, int setmarks); 315 static int sardpos(struct cam_periph *periph, int, u_int32_t *); 316 static int sasetpos(struct cam_periph *periph, int, u_int32_t *); 317 318 319 static struct periph_driver sadriver = 320 { 321 sainit, "sa", 322 TAILQ_HEAD_INITIALIZER(sadriver.units), /* generation */ 0 323 }; 324 325 DATA_SET(periphdriver_set, sadriver); 326 327 /* units are bits 4-7, 16-21 (1024 units) */ 328 #define SAUNIT(DEV) \ 329 (((minor(DEV) & 0xF0) >> 4) | ((minor(DEV) & 0x3f0000) >> 16)) 330 331 #define SAMODE(z) ((minor(z) & 0x3)) 332 #define SADENSITY(z) (((minor(z) >> 2) & 0x3)) 333 #define SA_IS_CTRL(z) (minor(z) & (1 << 29)) 334 335 /* For 2.2-stable support */ 336 #ifndef D_TAPE 337 #define D_TAPE 0 338 #endif 339 340 #define SA_CDEV_MAJOR 14 341 #define SA_BDEV_MAJOR 5 342 343 static struct cdevsw sa_cdevsw = { 344 /* open */ saopen, 345 /* close */ saclose, 346 /* read */ physread, 347 /* write */ physwrite, 348 /* ioctl */ saioctl, 349 /* stop */ nostop, 350 /* reset */ noreset, 351 /* devtotty */ nodevtotty, 352 /* poll */ nopoll, 353 /* mmap */ nommap, 354 /* strategy */ sastrategy, 355 /* name */ "sa", 356 /* parms */ noparms, 357 /* maj */ SA_CDEV_MAJOR, 358 /* dump */ nodump, 359 /* psize */ nopsize, 360 /* flags */ D_TAPE, 361 /* maxio */ 0, 362 /* bmaj */ SA_BDEV_MAJOR 363 }; 364 365 static struct extend_array *saperiphs; 366 367 static int 368 saopen(dev_t dev, int flags, int fmt, struct proc *p) 369 { 370 struct cam_periph *periph; 371 struct sa_softc *softc; 372 int unit; 373 int mode; 374 int density; 375 int error; 376 int s; 377 378 unit = SAUNIT(dev); 379 mode = SAMODE(dev); 380 density = SADENSITY(dev); 381 382 periph = cam_extend_get(saperiphs, unit); 383 if (periph == NULL) 384 return (ENXIO); 385 386 softc = (struct sa_softc *)periph->softc; 387 388 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE|CAM_DEBUG_INFO, 389 ("saopen(%d): dev=0x%x softc=0x%x\n", unit, unit, softc->flags)); 390 391 s = splsoftcam(); 392 393 if (SA_IS_CTRL(dev)) { 394 softc->ctrl_mode = 1; 395 (void) splx(s); 396 return (0); 397 } 398 399 if (softc->flags & SA_FLAG_INVALID) { 400 splx(s); 401 return(ENXIO); 402 } 403 404 if ((error = cam_periph_lock(periph, PRIBIO|PCATCH)) != 0) { 405 splx(s); 406 return (error); /* error code from tsleep */ 407 } 408 409 splx(s); 410 411 if ((softc->flags & SA_FLAG_OPEN) == 0) { 412 if (cam_periph_acquire(periph) != CAM_REQ_CMP) 413 return(ENXIO); 414 415 if ((error = sareservereleaseunit(periph, TRUE)) != 0) { 416 cam_periph_unlock(periph); 417 cam_periph_release(periph); 418 return(error); 419 } 420 } 421 422 if (error == 0) { 423 if ((softc->flags & SA_FLAG_OPEN) != 0) { 424 error = EBUSY; 425 } 426 427 if (error == 0) 428 error = samount(periph, flags, dev); 429 /* Perform other checking... */ 430 } 431 432 if (error == 0) { 433 saprevent(periph, PR_PREVENT); 434 softc->flags |= SA_FLAG_OPEN; 435 } 436 437 cam_periph_unlock(periph); 438 return (error); 439 } 440 441 static int 442 saclose(dev_t dev, int flag, int fmt, struct proc *p) 443 { 444 struct cam_periph *periph; 445 struct sa_softc *softc; 446 int unit, mode, error, writing, tmp; 447 int closedbits = SA_FLAG_OPEN; 448 449 unit = SAUNIT(dev); 450 mode = SAMODE(dev); 451 periph = cam_extend_get(saperiphs, unit); 452 if (periph == NULL) 453 return (ENXIO); 454 455 softc = (struct sa_softc *)periph->softc; 456 457 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE|CAM_DEBUG_INFO, 458 ("saclose(%d): dev=0x%x softc=0x%x\n", unit, unit, softc->flags)); 459 460 461 if (SA_IS_CTRL(dev)) { 462 softc->ctrl_mode = 0; 463 return (0); 464 } 465 466 if ((error = cam_periph_lock(periph, PRIBIO)) != 0) { 467 return (error); 468 } 469 470 /* 471 * Were we writing the tape? 472 */ 473 writing = (softc->flags & SA_FLAG_TAPE_WRITTEN) != 0; 474 475 /* 476 * See whether or not we need to write filemarks. If this 477 * fails, we probably have to assume we've lost tape 478 * position. 479 */ 480 error = sacheckeod(periph); 481 if (error) { 482 xpt_print_path(periph->path); 483 printf("failed to write terminating filemark(s)\n"); 484 softc->flags |= SA_FLAG_TAPE_FROZEN; 485 } 486 487 /* 488 * Whatever we end up doing, allow users to eject tapes from here on. 489 */ 490 saprevent(periph, PR_ALLOW); 491 492 /* 493 * Decide how to end... 494 */ 495 switch (mode) { 496 case SA_MODE_OFFLINE: 497 /* 498 * An 'offline' close is an unconditional release of 499 * frozen && mount conditions, irrespective of whether 500 * these operations succeeded. The reason for this is 501 * to allow at least some kind of programmatic way 502 * around our state getting all fouled up. If somebody 503 * issues an 'offline' command, that will be allowed 504 * to clear state. 505 */ 506 (void) sarewind(periph); 507 (void) saloadunload(periph, FALSE); 508 closedbits |= SA_FLAG_TAPE_MOUNTED|SA_FLAG_TAPE_FROZEN; 509 break; 510 case SA_MODE_REWIND: 511 /* 512 * If the rewind fails, return an error- if anyone cares, 513 * but not overwriting any previous error. 514 * 515 * We don't clear the notion of mounted here, but we do 516 * clear the notion of frozen if we successfully rewound. 517 */ 518 tmp = sarewind(periph); 519 if (tmp) { 520 if (error != 0) 521 error = tmp; 522 } else { 523 closedbits |= SA_FLAG_TAPE_FROZEN; 524 } 525 break; 526 case SA_MODE_NOREWIND: 527 /* 528 * If we're not rewinding/unloading the tape, find out 529 * whether we need to back up over one of two filemarks 530 * we wrote (if we wrote two filemarks) so that appends 531 * from this point on will be sane. 532 */ 533 if (error == 0 && writing && (softc->quirks & SA_QUIRK_2FM)) { 534 tmp = saspace(periph, -1, SS_FILEMARKS); 535 if (tmp) { 536 xpt_print_path(periph->path); 537 printf("unable to backspace over one of double" 538 " filemarks at end of tape\n"); 539 xpt_print_path(periph->path); 540 printf("it is possible that this device " 541 " needs a SA_QUIRK_1FM quirk set for it\n"); 542 softc->flags |= SA_FLAG_TAPE_FROZEN; 543 } 544 } 545 break; 546 default: 547 xpt_print_path(periph->path); 548 panic("unknown mode 0x%x in saclose\n", mode); 549 /* NOTREACHED */ 550 break; 551 } 552 553 /* 554 * We wish to note here that there are no more filemarks to be written. 555 */ 556 softc->filemarks = 0; 557 softc->flags &= ~SA_FLAG_TAPE_WRITTEN; 558 559 /* 560 * And we are no longer open for business. 561 */ 562 softc->flags &= ~closedbits; 563 564 /* 565 * Inform users if tape state if frozen.... 566 */ 567 if (softc->flags & SA_FLAG_TAPE_FROZEN) { 568 xpt_print_path(periph->path); 569 printf("tape is now frozen- use an OFFLINE, REWIND or MTEOM " 570 "command to clear this state.\n"); 571 } 572 573 /* release the device */ 574 sareservereleaseunit(periph, FALSE); 575 576 cam_periph_unlock(periph); 577 cam_periph_release(periph); 578 579 return (error); 580 } 581 582 /* 583 * Actually translate the requested transfer into one the physical driver 584 * can understand. The transfer is described by a buf and will include 585 * only one physical transfer. 586 */ 587 static void 588 sastrategy(struct buf *bp) 589 { 590 struct cam_periph *periph; 591 struct sa_softc *softc; 592 u_int unit; 593 int s; 594 595 if (SA_IS_CTRL(bp->b_dev)) { 596 bp->b_error = EINVAL; 597 goto bad; 598 } 599 unit = SAUNIT(bp->b_dev); 600 periph = cam_extend_get(saperiphs, unit); 601 if (periph == NULL) { 602 bp->b_error = ENXIO; 603 goto bad; 604 } 605 softc = (struct sa_softc *)periph->softc; 606 607 s = splsoftcam(); 608 609 if (softc->flags & SA_FLAG_INVALID) { 610 splx(s); 611 bp->b_error = ENXIO; 612 goto bad; 613 } 614 615 if (softc->flags & SA_FLAG_TAPE_FROZEN) { 616 splx(s); 617 bp->b_error = EPERM; 618 goto bad; 619 } 620 621 splx(s); 622 623 /* 624 * If it's a null transfer, return immediatly 625 */ 626 if (bp->b_bcount == 0) 627 goto done; 628 629 /* valid request? */ 630 if (softc->flags & SA_FLAG_FIXED) { 631 /* 632 * Fixed block device. The byte count must 633 * be a multiple of our block size. 634 */ 635 if (((softc->blk_mask != ~0) && 636 ((bp->b_bcount & softc->blk_mask) != 0)) || 637 ((softc->blk_mask == ~0) && 638 ((bp->b_bcount % softc->min_blk) != 0))) { 639 xpt_print_path(periph->path); 640 printf("Invalid request. Fixed block device " 641 "requests must be a multiple " 642 "of %d bytes\n", softc->min_blk); 643 bp->b_error = EINVAL; 644 goto bad; 645 } 646 } else if ((bp->b_bcount > softc->max_blk) || 647 (bp->b_bcount < softc->min_blk) || 648 (bp->b_bcount & softc->blk_mask) != 0) { 649 650 xpt_print_path(periph->path); 651 printf("Invalid request. Variable block device " 652 "requests must be "); 653 if (softc->blk_mask != 0) { 654 printf("a multiple of %d ", (0x1 << softc->blk_gran)); 655 } 656 printf("between %d and %d bytes\n", softc->min_blk, 657 softc->max_blk); 658 bp->b_error = EINVAL; 659 goto bad; 660 } 661 662 /* 663 * Mask interrupts so that the device cannot be invalidated until 664 * after we are in the queue. Otherwise, we might not properly 665 * clean up one of the buffers. 666 */ 667 s = splbio(); 668 669 /* 670 * Place it at the end of the queue. 671 */ 672 bufq_insert_tail(&softc->buf_queue, bp); 673 674 softc->queue_count++; 675 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("sastrategy: enqueuing a %d " 676 "%s byte %s queue count now %d\n", (int) bp->b_bcount, 677 (softc->flags & SA_FLAG_FIXED)? "fixed" : "variable", 678 (bp->b_flags & B_READ)? "read" : "write", softc->queue_count)); 679 680 splx(s); 681 682 /* 683 * Schedule ourselves for performing the work. 684 */ 685 xpt_schedule(periph, 1); 686 687 return; 688 bad: 689 bp->b_flags |= B_ERROR; 690 done: 691 692 /* 693 * Correctly set the buf to indicate a completed xfer 694 */ 695 bp->b_resid = bp->b_bcount; 696 biodone(bp); 697 } 698 699 static int 700 saioctl(dev_t dev, u_long cmd, caddr_t arg, int flag, struct proc *p) 701 { 702 struct cam_periph *periph; 703 struct sa_softc *softc; 704 int didlockperiph = 0; 705 int s; 706 int unit; 707 int mode; 708 int density; 709 int error; 710 711 unit = SAUNIT(dev); 712 mode = SAMODE(dev); 713 density = SADENSITY(dev); 714 715 periph = cam_extend_get(saperiphs, unit); 716 if (periph == NULL) 717 return (ENXIO); 718 719 softc = (struct sa_softc *)periph->softc; 720 721 /* 722 * Check for control mode accesses. We allow MTIOCGET and 723 * MTIOCERRSTAT (but need to be the only one open in order 724 * to clear latched status), and MTSETBSIZE, MTSETDNSTY 725 * and MTCOMP (but need to be the only one accessing this 726 * device to run those). 727 */ 728 729 if (SA_IS_CTRL(dev)) { 730 switch (cmd) { 731 case MTIOCGETEOTMODEL: 732 case MTIOCGET: 733 break; 734 case MTIOCERRSTAT: 735 /* 736 * If the periph isn't already locked, lock it 737 * so our MTIOCERRSTAT can reset latched error stats. 738 * 739 * If the periph is already locked, skip it because 740 * we're just getting status and it'll be up to the 741 * other thread that has this device open to do 742 * an MTIOCERRSTAT that would clear latched status. 743 */ 744 s = splsoftcam(); 745 if ((periph->flags & CAM_PERIPH_LOCKED) == 0) { 746 error = cam_periph_lock(periph, PRIBIO|PCATCH); 747 if (error != 0) { 748 splx(s); 749 return (error); 750 } 751 didlockperiph = 1; 752 } 753 break; 754 755 case MTIOCSETEOTMODEL: 756 case MTSETBSIZ: 757 case MTSETDNSTY: 758 case MTCOMP: 759 /* 760 * We need to acquire the peripheral here rather 761 * than at open time because we are sharing writable 762 * access to data structures. 763 */ 764 s = splsoftcam(); 765 error = cam_periph_lock(periph, PRIBIO|PCATCH); 766 if (error != 0) { 767 splx(s); 768 return (error); 769 } 770 didlockperiph = 1; 771 break; 772 773 default: 774 return (EINVAL); 775 } 776 } 777 778 /* 779 * Find the device that the user is talking about 780 */ 781 switch (cmd) { 782 case MTIOCGET: 783 { 784 struct mtget *g = (struct mtget *)arg; 785 786 bzero(g, sizeof(struct mtget)); 787 g->mt_type = MT_ISAR; 788 if (softc->flags & SA_FLAG_COMP_UNSUPP) { 789 g->mt_comp = MT_COMP_UNSUPP; 790 g->mt_comp0 = MT_COMP_UNSUPP; 791 g->mt_comp1 = MT_COMP_UNSUPP; 792 g->mt_comp2 = MT_COMP_UNSUPP; 793 g->mt_comp3 = MT_COMP_UNSUPP; 794 } else { 795 if ((softc->flags & SA_FLAG_COMP_ENABLED) == 0) { 796 g->mt_comp = MT_COMP_DISABLED; 797 } else { 798 g->mt_comp = softc->comp_algorithm; 799 } 800 g->mt_comp0 = softc->comp_algorithm; 801 g->mt_comp1 = softc->comp_algorithm; 802 g->mt_comp2 = softc->comp_algorithm; 803 g->mt_comp3 = softc->comp_algorithm; 804 } 805 g->mt_density = softc->media_density; 806 g->mt_density0 = softc->media_density; 807 g->mt_density1 = softc->media_density; 808 g->mt_density2 = softc->media_density; 809 g->mt_density3 = softc->media_density; 810 g->mt_blksiz = softc->media_blksize; 811 g->mt_blksiz0 = softc->media_blksize; 812 g->mt_blksiz1 = softc->media_blksize; 813 g->mt_blksiz2 = softc->media_blksize; 814 g->mt_blksiz3 = softc->media_blksize; 815 g->mt_fileno = softc->fileno; 816 g->mt_blkno = softc->blkno; 817 g->mt_dsreg = (short) softc->dsreg; 818 error = 0; 819 break; 820 } 821 case MTIOCERRSTAT: 822 { 823 struct scsi_tape_errors *sep = 824 &((union mterrstat *)arg)->scsi_errstat; 825 826 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, 827 ("saioctl: MTIOCERRSTAT\n")); 828 829 bzero(sep, sizeof(*sep)); 830 sep->io_resid = softc->last_io_resid; 831 bcopy((caddr_t) &softc->last_io_sense, sep->io_sense, 832 sizeof (sep->io_sense)); 833 bcopy((caddr_t) &softc->last_io_cdb, sep->io_cdb, 834 sizeof (sep->io_cdb)); 835 sep->ctl_resid = softc->last_ctl_resid; 836 bcopy((caddr_t) &softc->last_ctl_sense, sep->ctl_sense, 837 sizeof (sep->ctl_sense)); 838 bcopy((caddr_t) &softc->last_ctl_cdb, sep->ctl_cdb, 839 sizeof (sep->ctl_cdb)); 840 841 if (SA_IS_CTRL(dev) == 0 || didlockperiph) 842 bzero((caddr_t) &softc->errinfo, 843 sizeof (softc->errinfo)); 844 error = 0; 845 break; 846 } 847 case MTIOCTOP: 848 { 849 struct mtop *mt; 850 int count; 851 852 mt = (struct mtop *)arg; 853 854 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, 855 ("saioctl: op=0x%x count=0x%x\n", 856 mt->mt_op, mt->mt_count)); 857 858 count = mt->mt_count; 859 switch (mt->mt_op) { 860 case MTWEOF: /* write an end-of-file marker */ 861 /* XXXX: NEED TO CLEAR SA_TAPE_WRITTEN */ 862 error = sawritefilemarks(periph, count, FALSE); 863 break; 864 case MTWSS: /* write a setmark */ 865 error = sawritefilemarks(periph, count, TRUE); 866 break; 867 case MTBSR: /* backward space record */ 868 case MTFSR: /* forward space record */ 869 case MTBSF: /* backward space file */ 870 case MTFSF: /* forward space file */ 871 case MTBSS: /* backward space setmark */ 872 case MTFSS: /* forward space setmark */ 873 case MTEOD: /* space to end of recorded medium */ 874 { 875 int nmarks; 876 scsi_space_code spaceop = SS_FILEMARKS; 877 878 nmarks = softc->filemarks; 879 error = sacheckeod(periph); 880 if (error) { 881 xpt_print_path(periph->path); 882 printf("EOD check prior to spacing failed\n"); 883 softc->flags |= SA_FLAG_EIO_PENDING; 884 break; 885 } 886 nmarks -= softc->filemarks; 887 switch(mt->mt_op) { 888 case MTBSR: 889 count = -count; 890 /* FALLTHROUGH */ 891 case MTFSR: 892 spaceop = SS_BLOCKS; 893 break; 894 case MTBSF: 895 count = -count; 896 /* FALLTHROUGH */ 897 case MTFSF: 898 break; 899 case MTBSS: 900 count = -count; 901 /* FALLTHROUGH */ 902 case MTFSS: 903 spaceop = SS_SETMARKS; 904 break; 905 case MTEOD: 906 spaceop = SS_EOD; 907 count = 0; 908 nmarks = 0; 909 break; 910 default: 911 error = EINVAL; 912 break; 913 } 914 if (error) 915 break; 916 917 nmarks = softc->filemarks; 918 /* 919 * XXX: Why are we checking again? 920 */ 921 error = sacheckeod(periph); 922 if (error) 923 break; 924 nmarks -= softc->filemarks; 925 error = saspace(periph, count - nmarks, spaceop); 926 /* 927 * At this point, clear that we've written the tape 928 * and that we've written any filemarks. We really 929 * don't know what the applications wishes to do next- 930 * the sacheckeod's will make sure we terminated the 931 * tape correctly if we'd been writing, but the next 932 * action the user application takes will set again 933 * whether we need to write filemarks. 934 */ 935 softc->flags &= 936 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 937 softc->filemarks = 0; 938 break; 939 } 940 case MTREW: /* rewind */ 941 (void) sacheckeod(periph); 942 error = sarewind(periph); 943 /* see above */ 944 softc->flags &= 945 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 946 softc->filemarks = 0; 947 break; 948 case MTERASE: /* erase */ 949 error = saerase(periph, count); 950 softc->flags &= 951 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 952 break; 953 case MTRETENS: /* re-tension tape */ 954 error = saretension(periph); 955 softc->flags &= 956 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 957 break; 958 case MTOFFL: /* rewind and put the drive offline */ 959 960 (void) sacheckeod(periph); 961 /* see above */ 962 softc->flags &= ~SA_FLAG_TAPE_WRITTEN; 963 softc->filemarks = 0; 964 965 error = sarewind(periph); 966 967 /* 968 * Be sure to allow media removal before 969 * attempting the eject. 970 */ 971 972 saprevent(periph, PR_ALLOW); 973 if (error == 0) 974 error = saloadunload(periph, FALSE); 975 else 976 break; 977 softc->flags &= ~(SA_FLAG_TAPE_LOCKED| 978 SA_FLAG_TAPE_WRITTEN| SA_FLAG_TAPE_WRITTEN| 979 SA_FLAG_TAPE_FROZEN); 980 break; 981 982 case MTNOP: /* no operation, sets status only */ 983 case MTCACHE: /* enable controller cache */ 984 case MTNOCACHE: /* disable controller cache */ 985 error = 0; 986 break; 987 988 case MTSETBSIZ: /* Set block size for device */ 989 990 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, count, 991 0, 0, 0); 992 if (error == 0) { 993 softc->last_media_blksize = 994 softc->media_blksize; 995 softc->media_blksize = count; 996 if (count) { 997 softc->flags |= SA_FLAG_FIXED; 998 if (powerof2(count)) { 999 softc->blk_shift = 1000 ffs(count) - 1; 1001 softc->blk_mask = count - 1; 1002 } else { 1003 softc->blk_mask = ~0; 1004 softc->blk_shift = 0; 1005 } 1006 /* 1007 * Make the user's desire 'persistent'. 1008 */ 1009 softc->quirks &= ~SA_QUIRK_VARIABLE; 1010 softc->quirks |= SA_QUIRK_FIXED; 1011 } else { 1012 softc->flags &= ~SA_FLAG_FIXED; 1013 if (softc->max_blk == 0) { 1014 softc->max_blk = ~0; 1015 } 1016 softc->blk_shift = 0; 1017 if (softc->blk_gran != 0) { 1018 softc->blk_mask = 1019 softc->blk_gran - 1; 1020 } else { 1021 softc->blk_mask = 0; 1022 } 1023 /* 1024 * Make the user's desire 'persistent'. 1025 */ 1026 softc->quirks |= SA_QUIRK_VARIABLE; 1027 softc->quirks &= ~SA_QUIRK_FIXED; 1028 } 1029 } 1030 break; 1031 case MTSETDNSTY: /* Set density for device and mode */ 1032 if (count > UCHAR_MAX) { 1033 error = EINVAL; 1034 break; 1035 } else { 1036 error = sasetparams(periph, SA_PARAM_DENSITY, 1037 0, count, 0, 0); 1038 } 1039 break; 1040 case MTCOMP: /* enable compression */ 1041 /* 1042 * Some devices don't support compression, and 1043 * don't like it if you ask them for the 1044 * compression page. 1045 */ 1046 if ((softc->quirks & SA_QUIRK_NOCOMP) || 1047 (softc->flags & SA_FLAG_COMP_UNSUPP)) { 1048 error = ENODEV; 1049 break; 1050 } 1051 error = sasetparams(periph, SA_PARAM_COMPRESSION, 1052 0, 0, count, 0); 1053 break; 1054 default: 1055 error = EINVAL; 1056 } 1057 break; 1058 } 1059 case MTIOCIEOT: 1060 case MTIOCEEOT: 1061 error = 0; 1062 break; 1063 case MTIOCRDSPOS: 1064 error = sardpos(periph, 0, (u_int32_t *) arg); 1065 break; 1066 case MTIOCRDHPOS: 1067 error = sardpos(periph, 1, (u_int32_t *) arg); 1068 break; 1069 case MTIOCSLOCATE: 1070 error = sasetpos(periph, 0, (u_int32_t *) arg); 1071 break; 1072 case MTIOCHLOCATE: 1073 error = sasetpos(periph, 1, (u_int32_t *) arg); 1074 break; 1075 case MTIOCGETEOTMODEL: 1076 error = 0; 1077 if (softc->quirks & SA_QUIRK_1FM) 1078 mode = 1; 1079 else 1080 mode = 2; 1081 *((u_int32_t *) arg) = mode; 1082 break; 1083 case MTIOCSETEOTMODEL: 1084 error = 0; 1085 switch (*((u_int32_t *) arg)) { 1086 case 1: 1087 softc->quirks &= ~SA_QUIRK_2FM; 1088 softc->quirks |= SA_QUIRK_1FM; 1089 break; 1090 case 2: 1091 softc->quirks &= ~SA_QUIRK_1FM; 1092 softc->quirks |= SA_QUIRK_2FM; 1093 break; 1094 default: 1095 error = EINVAL; 1096 break; 1097 } 1098 break; 1099 default: 1100 error = cam_periph_ioctl(periph, cmd, arg, saerror); 1101 break; 1102 } 1103 if (didlockperiph) { 1104 cam_periph_unlock(periph); 1105 } 1106 return (error); 1107 } 1108 1109 static void 1110 sainit(void) 1111 { 1112 cam_status status; 1113 struct cam_path *path; 1114 1115 /* 1116 * Create our extend array for storing the devices we attach to. 1117 */ 1118 saperiphs = cam_extend_new(); 1119 if (saperiphs == NULL) { 1120 printf("sa: Failed to alloc extend array!\n"); 1121 return; 1122 } 1123 1124 /* 1125 * Install a global async callback. 1126 */ 1127 status = xpt_create_path(&path, NULL, CAM_XPT_PATH_ID, 1128 CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD); 1129 1130 if (status == CAM_REQ_CMP) { 1131 /* Register the async callbacks of interrest */ 1132 struct ccb_setasync csa; /* 1133 * This is an immediate CCB, 1134 * so using the stack is OK 1135 */ 1136 xpt_setup_ccb(&csa.ccb_h, path, 5); 1137 csa.ccb_h.func_code = XPT_SASYNC_CB; 1138 csa.event_enable = AC_FOUND_DEVICE; 1139 csa.callback = saasync; 1140 csa.callback_arg = NULL; 1141 xpt_action((union ccb *)&csa); 1142 status = csa.ccb_h.status; 1143 xpt_free_path(path); 1144 } 1145 1146 if (status != CAM_REQ_CMP) { 1147 printf("sa: Failed to attach master async callback " 1148 "due to status 0x%x!\n", status); 1149 } else { 1150 /* If we were successfull, register our devsw */ 1151 cdevsw_add(&sa_cdevsw); 1152 } 1153 } 1154 1155 static void 1156 saoninvalidate(struct cam_periph *periph) 1157 { 1158 struct sa_softc *softc; 1159 struct buf *q_bp; 1160 struct ccb_setasync csa; 1161 int s; 1162 1163 softc = (struct sa_softc *)periph->softc; 1164 1165 /* 1166 * De-register any async callbacks. 1167 */ 1168 xpt_setup_ccb(&csa.ccb_h, periph->path, 1169 /* priority */ 5); 1170 csa.ccb_h.func_code = XPT_SASYNC_CB; 1171 csa.event_enable = 0; 1172 csa.callback = saasync; 1173 csa.callback_arg = periph; 1174 xpt_action((union ccb *)&csa); 1175 1176 softc->flags |= SA_FLAG_INVALID; 1177 1178 /* 1179 * Although the oninvalidate() routines are always called at 1180 * splsoftcam, we need to be at splbio() here to keep the buffer 1181 * queue from being modified while we traverse it. 1182 */ 1183 s = splbio(); 1184 1185 /* 1186 * Return all queued I/O with ENXIO. 1187 * XXX Handle any transactions queued to the card 1188 * with XPT_ABORT_CCB. 1189 */ 1190 while ((q_bp = bufq_first(&softc->buf_queue)) != NULL){ 1191 bufq_remove(&softc->buf_queue, q_bp); 1192 q_bp->b_resid = q_bp->b_bcount; 1193 q_bp->b_error = ENXIO; 1194 q_bp->b_flags |= B_ERROR; 1195 biodone(q_bp); 1196 } 1197 softc->queue_count = 0; 1198 splx(s); 1199 1200 xpt_print_path(periph->path); 1201 printf("lost device\n"); 1202 1203 } 1204 1205 static void 1206 sacleanup(struct cam_periph *periph) 1207 { 1208 struct sa_softc *softc; 1209 1210 softc = (struct sa_softc *)periph->softc; 1211 1212 devstat_remove_entry(&softc->device_stats); 1213 cam_extend_release(saperiphs, periph->unit_number); 1214 xpt_print_path(periph->path); 1215 printf("removing device entry\n"); 1216 free(softc, M_DEVBUF); 1217 } 1218 1219 static void 1220 saasync(void *callback_arg, u_int32_t code, 1221 struct cam_path *path, void *arg) 1222 { 1223 struct cam_periph *periph; 1224 1225 periph = (struct cam_periph *)callback_arg; 1226 switch (code) { 1227 case AC_FOUND_DEVICE: 1228 { 1229 struct ccb_getdev *cgd; 1230 cam_status status; 1231 1232 cgd = (struct ccb_getdev *)arg; 1233 1234 if (cgd->pd_type != T_SEQUENTIAL) 1235 break; 1236 1237 /* 1238 * Allocate a peripheral instance for 1239 * this device and start the probe 1240 * process. 1241 */ 1242 status = cam_periph_alloc(saregister, saoninvalidate, 1243 sacleanup, sastart, 1244 "sa", CAM_PERIPH_BIO, cgd->ccb_h.path, 1245 saasync, AC_FOUND_DEVICE, cgd); 1246 1247 if (status != CAM_REQ_CMP 1248 && status != CAM_REQ_INPROG) 1249 printf("saasync: Unable to probe new device " 1250 "due to status 0x%x\n", status); 1251 break; 1252 } 1253 default: 1254 cam_periph_async(periph, code, path, arg); 1255 break; 1256 } 1257 } 1258 1259 static cam_status 1260 saregister(struct cam_periph *periph, void *arg) 1261 { 1262 struct sa_softc *softc; 1263 struct ccb_setasync csa; 1264 struct ccb_getdev *cgd; 1265 caddr_t match; 1266 1267 cgd = (struct ccb_getdev *)arg; 1268 if (periph == NULL) { 1269 printf("saregister: periph was NULL!!\n"); 1270 return(CAM_REQ_CMP_ERR); 1271 } 1272 1273 if (cgd == NULL) { 1274 printf("saregister: no getdev CCB, can't register device\n"); 1275 return(CAM_REQ_CMP_ERR); 1276 } 1277 1278 softc = (struct sa_softc *)malloc(sizeof(*softc),M_DEVBUF,M_NOWAIT); 1279 1280 if (softc == NULL) { 1281 printf("saregister: Unable to probe new device. " 1282 "Unable to allocate softc\n"); 1283 return(CAM_REQ_CMP_ERR); 1284 } 1285 1286 bzero(softc, sizeof(*softc)); 1287 softc->scsi_rev = SID_ANSI_REV(&cgd->inq_data); 1288 softc->state = SA_STATE_NORMAL; 1289 softc->fileno = (daddr_t) -1; 1290 softc->blkno = (daddr_t) -1; 1291 1292 bufq_init(&softc->buf_queue); 1293 periph->softc = softc; 1294 cam_extend_set(saperiphs, periph->unit_number, periph); 1295 1296 /* 1297 * See if this device has any quirks. 1298 */ 1299 match = cam_quirkmatch((caddr_t)&cgd->inq_data, 1300 (caddr_t)sa_quirk_table, 1301 sizeof(sa_quirk_table)/sizeof(*sa_quirk_table), 1302 sizeof(*sa_quirk_table), scsi_inquiry_match); 1303 1304 if (match != NULL) { 1305 softc->quirks = ((struct sa_quirk_entry *)match)->quirks; 1306 softc->last_media_blksize = 1307 ((struct sa_quirk_entry *)match)->prefblk; 1308 #ifdef CAMDEBUG 1309 xpt_print_path(periph->path); 1310 printf("found quirk entry %d\n", (int) 1311 (((struct sa_quirk_entry *) match) - sa_quirk_table)); 1312 #endif 1313 } else 1314 softc->quirks = SA_QUIRK_NONE; 1315 1316 /* 1317 * The SA driver supports a blocksize, but we don't know the 1318 * blocksize until we media is inserted. So, set a flag to 1319 * indicate that the blocksize is unavailable right now. 1320 */ 1321 devstat_add_entry(&softc->device_stats, "sa", 1322 periph->unit_number, 0, 1323 DEVSTAT_BS_UNAVAILABLE, 1324 cgd->pd_type | DEVSTAT_TYPE_IF_SCSI, 1325 DEVSTAT_PRIORITY_SA); 1326 1327 /* 1328 * Add an async callback so that we get 1329 * notified if this device goes away. 1330 */ 1331 xpt_setup_ccb(&csa.ccb_h, periph->path, /* priority */ 5); 1332 csa.ccb_h.func_code = XPT_SASYNC_CB; 1333 csa.event_enable = AC_LOST_DEVICE; 1334 csa.callback = saasync; 1335 csa.callback_arg = periph; 1336 xpt_action((union ccb *)&csa); 1337 1338 xpt_announce_periph(periph, NULL); 1339 1340 return(CAM_REQ_CMP); 1341 } 1342 1343 static void 1344 sastart(struct cam_periph *periph, union ccb *start_ccb) 1345 { 1346 struct sa_softc *softc; 1347 1348 softc = (struct sa_softc *)periph->softc; 1349 1350 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("sastart")); 1351 1352 switch (softc->state) { 1353 case SA_STATE_NORMAL: 1354 { 1355 /* Pull a buffer from the queue and get going on it */ 1356 struct buf *bp; 1357 int s; 1358 1359 /* 1360 * See if there is a buf with work for us to do.. 1361 */ 1362 s = splbio(); 1363 bp = bufq_first(&softc->buf_queue); 1364 if (periph->immediate_priority <= periph->pinfo.priority) { 1365 CAM_DEBUG_PRINT(CAM_DEBUG_SUBTRACE, 1366 ("queuing for immediate ccb\n")); 1367 start_ccb->ccb_h.ccb_type = SA_CCB_WAITING; 1368 SLIST_INSERT_HEAD(&periph->ccb_list, &start_ccb->ccb_h, 1369 periph_links.sle); 1370 periph->immediate_priority = CAM_PRIORITY_NONE; 1371 splx(s); 1372 wakeup(&periph->ccb_list); 1373 } else if (bp == NULL) { 1374 splx(s); 1375 xpt_release_ccb(start_ccb); 1376 } else if ((softc->flags & SA_FLAG_ERR_PENDING) != 0) { 1377 struct buf *done_bp; 1378 softc->queue_count--; 1379 bufq_remove(&softc->buf_queue, bp); 1380 bp->b_resid = bp->b_bcount; 1381 bp->b_flags |= B_ERROR; 1382 if ((softc->flags & SA_FLAG_EOM_PENDING) != 0) { 1383 if ((bp->b_flags & B_READ) == 0) 1384 bp->b_error = ENOSPC; 1385 else 1386 bp->b_error = EIO; 1387 } 1388 if ((softc->flags & SA_FLAG_EOF_PENDING) != 0) { 1389 bp->b_error = EIO; 1390 } 1391 if ((softc->flags & SA_FLAG_EIO_PENDING) != 0) { 1392 bp->b_error = EIO; 1393 } 1394 done_bp = bp; 1395 bp = bufq_first(&softc->buf_queue); 1396 /* 1397 * Only if we have no other buffers queued up 1398 * do we clear the pending error flag. 1399 */ 1400 if (bp == NULL) 1401 softc->flags &= ~SA_FLAG_ERR_PENDING; 1402 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 1403 ("sastart- ERR_PENDING now 0x%x, bp is %sNULL, " 1404 "%d more buffers queued up\n", 1405 (softc->flags & SA_FLAG_ERR_PENDING), 1406 (bp != NULL)? "not " : " ", softc->queue_count)); 1407 splx(s); 1408 xpt_release_ccb(start_ccb); 1409 biodone(done_bp); 1410 } else { 1411 u_int32_t length; 1412 1413 bufq_remove(&softc->buf_queue, bp); 1414 softc->queue_count--; 1415 1416 if ((softc->flags & SA_FLAG_FIXED) != 0) { 1417 if (softc->blk_shift != 0) { 1418 length = 1419 bp->b_bcount >> softc->blk_shift; 1420 } else if (softc->media_blksize != 0) { 1421 length = 1422 bp->b_bcount / softc->media_blksize; 1423 } else { 1424 bp->b_error = EIO; 1425 xpt_print_path(periph->path); 1426 printf("zero blocksize for " 1427 "FIXED length writes?\n"); 1428 splx(s); 1429 biodone(bp); 1430 break; 1431 } 1432 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 1433 ("Fixed Record Count is %d\n", length)); 1434 } else { 1435 length = bp->b_bcount; 1436 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_INFO, 1437 ("Variable Record Count is %d\n", length)); 1438 } 1439 devstat_start_transaction(&softc->device_stats); 1440 /* 1441 * Some people have theorized that we should 1442 * suppress illegal length indication if we are 1443 * running in variable block mode so that we don't 1444 * have to request sense every time our requested 1445 * block size is larger than the written block. 1446 * The residual information from the ccb allows 1447 * us to identify this situation anyway. The only 1448 * problem with this is that we will not get 1449 * information about blocks that are larger than 1450 * our read buffer unless we set the block size 1451 * in the mode page to something other than 0. 1452 * 1453 * I believe that this is a non-issue. If user apps 1454 * don't adjust their read size to match our record 1455 * size, that's just life. Anyway, the typical usage 1456 * would be to issue, e.g., 64KB reads and occasionally 1457 * have to do deal with 512 byte or 1KB intermediate 1458 * records. 1459 */ 1460 softc->dsreg = (bp->b_flags & B_READ)? 1461 MTIO_DSREG_RD : MTIO_DSREG_WR; 1462 scsi_sa_read_write(&start_ccb->csio, 0, sadone, 1463 MSG_SIMPLE_Q_TAG, (bp->b_flags & B_READ) != 0, 1464 FALSE, (softc->flags & SA_FLAG_FIXED) != 0, 1465 length, bp->b_data, bp->b_bcount, SSD_FULL_SIZE, 1466 120 * 60 * 1000); 1467 start_ccb->ccb_h.ccb_type = SA_CCB_BUFFER_IO; 1468 start_ccb->ccb_h.ccb_bp = bp; 1469 bp = bufq_first(&softc->buf_queue); 1470 splx(s); 1471 xpt_action(start_ccb); 1472 } 1473 1474 if (bp != NULL) { 1475 /* Have more work to do, so ensure we stay scheduled */ 1476 xpt_schedule(periph, 1); 1477 } 1478 break; 1479 } 1480 case SA_STATE_ABNORMAL: 1481 default: 1482 panic("state 0x%x in sastart", softc->state); 1483 break; 1484 } 1485 } 1486 1487 1488 static void 1489 sadone(struct cam_periph *periph, union ccb *done_ccb) 1490 { 1491 struct sa_softc *softc; 1492 struct ccb_scsiio *csio; 1493 1494 softc = (struct sa_softc *)periph->softc; 1495 csio = &done_ccb->csio; 1496 switch (csio->ccb_h.ccb_type) { 1497 case SA_CCB_BUFFER_IO: 1498 { 1499 struct buf *bp; 1500 int error; 1501 1502 softc->dsreg = MTIO_DSREG_REST; 1503 bp = (struct buf *)done_ccb->ccb_h.ccb_bp; 1504 error = 0; 1505 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 1506 if ((error = saerror(done_ccb, 0, 0)) == ERESTART) { 1507 /* 1508 * A retry was scheduled, so just return. 1509 */ 1510 return; 1511 } 1512 } 1513 1514 if (error == EIO) { 1515 int s; 1516 struct buf *q_bp; 1517 1518 /* 1519 * Catastrophic error. Mark the tape as not mounted. 1520 * Return all queued I/O with EIO, and unfreeze 1521 * our queue so that future transactions that 1522 * attempt to fix this problem can get to the 1523 * device. 1524 * 1525 */ 1526 1527 s = splbio(); 1528 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 1529 while ((q_bp = bufq_first(&softc->buf_queue)) != NULL) { 1530 bufq_remove(&softc->buf_queue, q_bp); 1531 q_bp->b_resid = q_bp->b_bcount; 1532 q_bp->b_error = EIO; 1533 q_bp->b_flags |= B_ERROR; 1534 biodone(q_bp); 1535 } 1536 splx(s); 1537 } 1538 if (error != 0) { 1539 bp->b_resid = bp->b_bcount; 1540 bp->b_error = error; 1541 bp->b_flags |= B_ERROR; 1542 /* 1543 * In the error case, position is updated in saerror. 1544 */ 1545 } else { 1546 bp->b_resid = csio->resid; 1547 bp->b_error = 0; 1548 if (csio->resid != 0) { 1549 bp->b_flags |= B_ERROR; 1550 } 1551 if ((bp->b_flags & B_READ) == 0) { 1552 softc->flags |= SA_FLAG_TAPE_WRITTEN; 1553 softc->filemarks = 0; 1554 } 1555 if (softc->blkno != (daddr_t) -1) { 1556 if ((softc->flags & SA_FLAG_FIXED) != 0) { 1557 u_int32_t l; 1558 if (softc->blk_shift != 0) { 1559 l = bp->b_bcount >> 1560 softc->blk_shift; 1561 } else { 1562 l = bp->b_bcount / 1563 softc->media_blksize; 1564 } 1565 softc->blkno += (daddr_t) l; 1566 } else { 1567 softc->blkno++; 1568 } 1569 } 1570 } 1571 /* 1572 * If we had an error (immediate or pending), 1573 * release the device queue now. 1574 */ 1575 if (error || (softc->flags & SA_FLAG_ERR_PENDING)) 1576 cam_release_devq(done_ccb->ccb_h.path, 0, 0, 0, 0); 1577 #ifdef CAMDEBUG 1578 if (error || bp->b_resid) { 1579 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 1580 ("error %d resid %ld count %ld\n", error, 1581 bp->b_resid, bp->b_bcount)); 1582 } 1583 #endif 1584 devstat_end_transaction(&softc->device_stats, 1585 bp->b_bcount - bp->b_resid, 1586 done_ccb->csio.tag_action & 0xf, 1587 (bp->b_flags & B_READ) ? DEVSTAT_READ 1588 : DEVSTAT_WRITE); 1589 biodone(bp); 1590 break; 1591 } 1592 case SA_CCB_WAITING: 1593 { 1594 /* Caller will release the CCB */ 1595 wakeup(&done_ccb->ccb_h.cbfcnp); 1596 return; 1597 } 1598 } 1599 xpt_release_ccb(done_ccb); 1600 } 1601 1602 /* 1603 * Mount the tape (make sure it's ready for I/O). 1604 */ 1605 static int 1606 samount(struct cam_periph *periph, int oflags, dev_t dev) 1607 { 1608 struct sa_softc *softc; 1609 union ccb *ccb; 1610 struct ccb_scsiio *csio; 1611 int error; 1612 1613 /* 1614 * oflags can be checked for 'kind' of open (read-only check) - later 1615 * dev can be checked for a control-mode or compression open - later 1616 */ 1617 UNUSED_PARAMETER(oflags); 1618 UNUSED_PARAMETER(dev); 1619 1620 1621 softc = (struct sa_softc *)periph->softc; 1622 ccb = cam_periph_getccb(periph, 1); 1623 csio = &ccb->csio; 1624 error = 0; 1625 1626 /* 1627 * This *should* determine if something has happend since the last 1628 * open/mount that would invalidate the mount, but is currently 1629 * broken. 1630 * 1631 * This will also eat any pending UAs. 1632 */ 1633 scsi_test_unit_ready(csio, 1, sadone, 1634 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, 5 * 60 * 1000); 1635 1636 /* 1637 * Because we're not supplying a error routine, cam_periph_runccb 1638 * will unfreeze the queue if there was an error. 1639 */ 1640 cam_periph_runccb(ccb, NULL, 0, 0, &softc->device_stats); 1641 1642 1643 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) { 1644 struct scsi_read_block_limits_data *rblim = NULL; 1645 int comp_enabled, comp_supported; 1646 u_int8_t write_protect, guessing = 0; 1647 1648 /* 1649 * Clear out old state. 1650 */ 1651 softc->flags &= ~(SA_FLAG_TAPE_WP|SA_FLAG_TAPE_WRITTEN| 1652 SA_FLAG_ERR_PENDING|SA_FLAG_COMP_ENABLED| 1653 SA_FLAG_COMP_SUPP|SA_FLAG_COMP_UNSUPP); 1654 softc->filemarks = 0; 1655 1656 /* 1657 * *Very* first off, make sure we're loaded to BOT. 1658 */ 1659 scsi_load_unload(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 1660 FALSE, FALSE, 1, SSD_FULL_SIZE, 60000); 1661 error = cam_periph_runccb(ccb, saerror, 0, SF_QUIET_IR, 1662 &softc->device_stats); 1663 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 1664 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 1665 /* 1666 * In case this doesn't work, do a REWIND instead 1667 */ 1668 if (error) { 1669 scsi_rewind(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, 1670 FALSE, SSD_FULL_SIZE, 1671 (SA_REWIND_TIMEOUT) * 60 * 1000); 1672 error = cam_periph_runccb(ccb, saerror, 0, 0, 1673 &softc->device_stats); 1674 } 1675 if (error) { 1676 xpt_release_ccb(ccb); 1677 goto exit; 1678 } 1679 1680 /* 1681 * Next off, determine block limits. 1682 */ 1683 rblim = (struct scsi_read_block_limits_data *) 1684 malloc(sizeof(*rblim), M_TEMP, M_WAITOK); 1685 1686 /* it is safe to retry this */ 1687 scsi_read_block_limits(csio, 5, sadone, MSG_SIMPLE_Q_TAG, 1688 rblim, SSD_FULL_SIZE, 5000); 1689 1690 error = cam_periph_runccb(ccb, saerror, 0, 1691 SF_RETRY_UA | SF_RETRY_SELTO, &softc->device_stats); 1692 1693 xpt_release_ccb(ccb); 1694 1695 if (error != 0) { 1696 /* 1697 * If it's less than SCSI-2, READ BLOCK LIMITS is not 1698 * a MANDATORY command. Anyway- it doesn't matter- 1699 * we can proceed anyway. 1700 */ 1701 softc->blk_gran = 0; 1702 softc->max_blk = ~0; 1703 softc->min_blk = 0; 1704 } else { 1705 if (softc->scsi_rev >= SCSI_REV_3) { 1706 softc->blk_gran = RBL_GRAN(rblim); 1707 } else { 1708 softc->blk_gran = 0; 1709 } 1710 /* 1711 * We take max_blk == min_blk to mean a default to 1712 * fixed mode- but note that whatever we get out of 1713 * sagetparams below will actually determine whether 1714 * we are actually *in* fixed mode. 1715 */ 1716 softc->max_blk = scsi_3btoul(rblim->maximum); 1717 softc->min_blk = scsi_2btoul(rblim->minimum); 1718 1719 1720 } 1721 /* 1722 * Next, perform a mode sense to determine 1723 * current density, blocksize, compression etc. 1724 */ 1725 error = sagetparams(periph, SA_PARAM_ALL, 1726 &softc->media_blksize, 1727 &softc->media_density, 1728 &softc->media_numblks, 1729 &softc->buffer_mode, &write_protect, 1730 &softc->speed, &comp_supported, 1731 &comp_enabled, &softc->comp_algorithm, 1732 NULL); 1733 1734 if (error != 0) { 1735 /* 1736 * We could work a little harder here. We could 1737 * adjust our attempts to get information. It 1738 * might be an ancient tape drive. If someone 1739 * nudges us, we'll do that. 1740 */ 1741 goto exit; 1742 } 1743 1744 /* 1745 * If no quirk has determined that this is a device that is 1746 * preferred to be in fixed or variable mode, now is the time 1747 * to find out. 1748 */ 1749 if ((softc->quirks & (SA_QUIRK_FIXED|SA_QUIRK_VARIABLE)) == 0) { 1750 guessing = 1; 1751 /* 1752 * This could be expensive to find out. Luckily we 1753 * only need to do this once. If we start out in 1754 * 'default' mode, try and set ourselves to one 1755 * of the densities that would determine a wad 1756 * of other stuff. Go from highest to lowest. 1757 */ 1758 if (softc->media_density == SCSI_DEFAULT_DENSITY) { 1759 int i; 1760 static u_int8_t ctry[] = { 1761 SCSI_DENSITY_HALFINCH_PE, 1762 SCSI_DENSITY_HALFINCH_6250C, 1763 SCSI_DENSITY_HALFINCH_6250, 1764 SCSI_DENSITY_HALFINCH_1600, 1765 SCSI_DENSITY_HALFINCH_800, 1766 SCSI_DENSITY_QIC_4GB, 1767 SCSI_DENSITY_QIC_2GB, 1768 SCSI_DENSITY_QIC_525_320, 1769 SCSI_DENSITY_QIC_150, 1770 SCSI_DENSITY_QIC_120, 1771 SCSI_DENSITY_QIC_24, 1772 SCSI_DENSITY_QIC_11_9TRK, 1773 SCSI_DENSITY_QIC_11_4TRK, 1774 SCSI_DENSITY_QIC_1320, 1775 SCSI_DENSITY_QIC_3080, 1776 0 1777 }; 1778 for (i = 0; ctry[i]; i++) { 1779 error = sasetparams(periph, 1780 SA_PARAM_DENSITY, 0, ctry[i], 1781 0, SF_NO_PRINT); 1782 if (error == 0) { 1783 softc->media_density = ctry[i]; 1784 break; 1785 } 1786 } 1787 } 1788 switch (softc->media_density) { 1789 case SCSI_DENSITY_QIC_11_4TRK: 1790 case SCSI_DENSITY_QIC_11_9TRK: 1791 case SCSI_DENSITY_QIC_24: 1792 case SCSI_DENSITY_QIC_120: 1793 case SCSI_DENSITY_QIC_150: 1794 case SCSI_DENSITY_QIC_1320: 1795 case SCSI_DENSITY_QIC_3080: 1796 softc->quirks &= ~SA_QUIRK_2FM; 1797 softc->quirks |= SA_QUIRK_FIXED|SA_QUIRK_1FM; 1798 softc->last_media_blksize = 512; 1799 break; 1800 case SCSI_DENSITY_QIC_4GB: 1801 case SCSI_DENSITY_QIC_2GB: 1802 case SCSI_DENSITY_QIC_525_320: 1803 softc->quirks &= ~SA_QUIRK_2FM; 1804 softc->quirks |= SA_QUIRK_FIXED|SA_QUIRK_1FM; 1805 softc->last_media_blksize = 1024; 1806 break; 1807 default: 1808 softc->last_media_blksize = 1809 softc->media_blksize; 1810 softc->quirks |= SA_QUIRK_VARIABLE; 1811 break; 1812 } 1813 } 1814 1815 /* 1816 * If no quirk has determined that this is a device that needs 1817 * to have 2 Filemarks at EOD, now is the time to find out. 1818 */ 1819 1820 if ((softc->quirks & SA_QUIRK_2FM) == 0) { 1821 switch (softc->media_density) { 1822 case SCSI_DENSITY_HALFINCH_800: 1823 case SCSI_DENSITY_HALFINCH_1600: 1824 case SCSI_DENSITY_HALFINCH_6250: 1825 case SCSI_DENSITY_HALFINCH_6250C: 1826 case SCSI_DENSITY_HALFINCH_PE: 1827 softc->quirks &= ~SA_QUIRK_1FM; 1828 softc->quirks |= SA_QUIRK_2FM; 1829 break; 1830 default: 1831 break; 1832 } 1833 } 1834 1835 /* 1836 * Now validate that some info we got makes sense. 1837 */ 1838 if ((softc->max_blk < softc->media_blksize) || 1839 (softc->min_blk > softc->media_blksize && 1840 softc->media_blksize)) { 1841 xpt_print_path(ccb->ccb_h.path); 1842 printf("BLOCK LIMITS (%d..%d) could not match current " 1843 "block settings (%d)- adjusting\n", softc->min_blk, 1844 softc->max_blk, softc->media_blksize); 1845 softc->max_blk = softc->min_blk = 1846 softc->media_blksize; 1847 } 1848 1849 /* 1850 * Now put ourselves into the right frame of mind based 1851 * upon quirks... 1852 */ 1853 tryagain: 1854 /* 1855 * If we want to be in FIXED mode and our current blocksize 1856 * is not equal to our last blocksize (if nonzero), try and 1857 * set ourselves to this last blocksize (as the 'preferred' 1858 * block size). The initial quirkmatch at registry sets the 1859 * initial 'last' blocksize. If, for whatever reason, this 1860 * 'last' blocksize is zero, set the blocksize to 512, 1861 * or min_blk if that's larger. 1862 */ 1863 if ((softc->quirks & SA_QUIRK_FIXED) && 1864 (softc->media_blksize != softc->last_media_blksize)) { 1865 softc->media_blksize = softc->last_media_blksize; 1866 if (softc->media_blksize == 0) { 1867 softc->media_blksize = 512; 1868 if (softc->media_blksize < softc->min_blk) { 1869 softc->media_blksize = softc->min_blk; 1870 } 1871 } 1872 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, 1873 softc->media_blksize, 0, 0, SF_NO_PRINT); 1874 if (error) { 1875 xpt_print_path(ccb->ccb_h.path); 1876 printf("unable to set fixed blocksize to %d\n", 1877 softc->media_blksize); 1878 goto exit; 1879 } 1880 } 1881 1882 if ((softc->quirks & SA_QUIRK_VARIABLE) && 1883 (softc->media_blksize != 0)) { 1884 softc->last_media_blksize = softc->media_blksize; 1885 softc->media_blksize = 0; 1886 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, 1887 0, 0, 0, SF_NO_PRINT); 1888 if (error) { 1889 /* 1890 * If this fails and we were guessing, just 1891 * assume that we got it wrong and go try 1892 * fixed block mode. Don't even check against 1893 * density code at this point. 1894 */ 1895 if (guessing) { 1896 softc->quirks &= ~SA_QUIRK_VARIABLE; 1897 softc->quirks |= SA_QUIRK_FIXED; 1898 if (softc->last_media_blksize == 0) 1899 softc->last_media_blksize = 512; 1900 goto tryagain; 1901 } 1902 xpt_print_path(ccb->ccb_h.path); 1903 printf("unable to set variable blocksize\n"); 1904 goto exit; 1905 } 1906 } 1907 1908 /* 1909 * Now that we have the current block size, 1910 * set up some parameters for sastart's usage. 1911 */ 1912 if (softc->media_blksize) { 1913 softc->flags |= SA_FLAG_FIXED; 1914 if (powerof2(softc->media_blksize)) { 1915 softc->blk_shift = 1916 ffs(softc->media_blksize) - 1; 1917 softc->blk_mask = softc->media_blksize - 1; 1918 } else { 1919 softc->blk_mask = ~0; 1920 softc->blk_shift = 0; 1921 } 1922 } else { 1923 /* 1924 * The SCSI-3 spec allows 0 to mean "unspecified". 1925 * The SCSI-1 spec allows 0 to mean 'infinite'. 1926 * 1927 * Either works here. 1928 */ 1929 if (softc->max_blk == 0) { 1930 softc->max_blk = ~0; 1931 } 1932 softc->blk_shift = 0; 1933 if (softc->blk_gran != 0) { 1934 softc->blk_mask = softc->blk_gran - 1; 1935 } else { 1936 softc->blk_mask = 0; 1937 } 1938 } 1939 1940 if (write_protect) 1941 softc->flags |= SA_FLAG_TAPE_WP; 1942 1943 if (comp_supported) { 1944 if (softc->saved_comp_algorithm == 0) 1945 softc->saved_comp_algorithm = 1946 softc->comp_algorithm; 1947 softc->flags |= SA_FLAG_COMP_SUPP; 1948 if (comp_enabled) 1949 softc->flags |= SA_FLAG_COMP_ENABLED; 1950 } else 1951 softc->flags |= SA_FLAG_COMP_UNSUPP; 1952 1953 if (softc->buffer_mode == SMH_SA_BUF_MODE_NOBUF) { 1954 error = sasetparams(periph, SA_PARAM_BUFF_MODE, 0, 1955 0, 0, SF_NO_PRINT); 1956 if (error == 0) 1957 softc->buffer_mode = SMH_SA_BUF_MODE_SIBUF; 1958 } 1959 1960 1961 if (error == 0) { 1962 softc->flags |= SA_FLAG_TAPE_MOUNTED; 1963 } 1964 exit: 1965 if (rblim != NULL) 1966 free(rblim, M_TEMP); 1967 1968 if (error != 0) { 1969 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, 0); 1970 softc->dsreg = MTIO_DSREG_NIL; 1971 } else { 1972 softc->fileno = softc->blkno = 0; 1973 softc->dsreg = MTIO_DSREG_REST; 1974 } 1975 #if SA_2FM_AT_EOD == 1 1976 if ((softc->quirks & SA_QUIRK_1FM) == 0) 1977 softc->quirks |= SA_QUIRK_2FM; 1978 #else 1979 if ((softc->quirks & SA_QUIRK_2FM) == 0) 1980 softc->quirks |= SA_QUIRK_1FM; 1981 #endif 1982 } else 1983 xpt_release_ccb(ccb); 1984 1985 return (error); 1986 } 1987 1988 static int 1989 sacheckeod(struct cam_periph *periph) 1990 { 1991 int error; 1992 int markswanted; 1993 struct sa_softc *softc; 1994 1995 softc = (struct sa_softc *)periph->softc; 1996 markswanted = 0; 1997 1998 if ((softc->flags & SA_FLAG_TAPE_WRITTEN) != 0) { 1999 markswanted++; 2000 if (softc->quirks & SA_QUIRK_2FM) 2001 markswanted++; 2002 } 2003 2004 if (softc->filemarks < markswanted) { 2005 markswanted -= softc->filemarks; 2006 error = sawritefilemarks(periph, markswanted, FALSE); 2007 } else { 2008 error = 0; 2009 } 2010 return (error); 2011 } 2012 2013 static int 2014 saerror(union ccb *ccb, u_int32_t cflgs, u_int32_t sflgs) 2015 { 2016 static const char *toobig = 2017 "%d-byte tape record bigger than suplied buffer\n"; 2018 struct cam_periph *periph; 2019 struct sa_softc *softc; 2020 struct ccb_scsiio *csio; 2021 struct scsi_sense_data *sense; 2022 u_int32_t resid; 2023 int32_t info; 2024 int error_code, sense_key, asc, ascq; 2025 int error, defer_action; 2026 2027 periph = xpt_path_periph(ccb->ccb_h.path); 2028 softc = (struct sa_softc *)periph->softc; 2029 csio = &ccb->csio; 2030 sense = &csio->sense_data; 2031 scsi_extract_sense(sense, &error_code, &sense_key, &asc, &ascq); 2032 error = 0; 2033 2034 /* 2035 * Calculate/latch up, any residuals... 2036 */ 2037 if ((csio->ccb_h.status & CAM_STATUS_MASK) == CAM_SCSI_STATUS_ERROR) { 2038 if ((sense->error_code & SSD_ERRCODE_VALID) != 0) { 2039 info = (int32_t) scsi_4btoul(sense->info); 2040 resid = info; 2041 if ((softc->flags & SA_FLAG_FIXED) != 0) 2042 resid *= softc->media_blksize; 2043 } else { 2044 resid = csio->dxfer_len; 2045 info = resid; 2046 if ((softc->flags & SA_FLAG_FIXED) != 0) { 2047 if (softc->media_blksize) 2048 info /= softc->media_blksize; 2049 } 2050 } 2051 if (csio->ccb_h.ccb_type == SA_CCB_BUFFER_IO) { 2052 bcopy((caddr_t) sense, (caddr_t) &softc->last_io_sense, 2053 sizeof (struct scsi_sense_data)); 2054 bcopy(csio->cdb_io.cdb_bytes, softc->last_io_cdb, 2055 (int) csio->cdb_len); 2056 softc->last_io_resid = resid; 2057 } else { 2058 bcopy((caddr_t) sense, (caddr_t) &softc->last_ctl_sense, 2059 sizeof (struct scsi_sense_data)); 2060 bcopy(csio->cdb_io.cdb_bytes, softc->last_ctl_cdb, 2061 (int) csio->cdb_len); 2062 softc->last_ctl_resid = resid; 2063 } 2064 } 2065 2066 /* 2067 * If it's neither a SCSI Check Condition Error nor a non-read/write 2068 * command, let the common code deal with it the error setting. 2069 */ 2070 if ((csio->ccb_h.status & CAM_STATUS_MASK) != CAM_SCSI_STATUS_ERROR || 2071 (csio->ccb_h.ccb_type == SA_CCB_WAITING)) { 2072 return (cam_periph_error(ccb, cflgs, sflgs, &softc->saved_ccb)); 2073 } 2074 2075 /* 2076 * Calculate whether we'll defer action. 2077 */ 2078 2079 if (resid > 0 && resid < csio->dxfer_len && 2080 (softc->flags & SA_FLAG_FIXED) != 0) { 2081 defer_action = TRUE; 2082 } else { 2083 defer_action = FALSE; 2084 } 2085 2086 /* 2087 * Handle filemark, end of tape, mismatched record sizes.... 2088 * From this point out, we're only handling read/write cases. 2089 * Handle writes && reads differently. 2090 */ 2091 2092 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("Key 0x%x ASC/ASCQ 0x%x " 2093 "0x%x flags 0x%x resid %d dxfer_len %d\n", sense_key, asc, ascq, 2094 sense->flags & ~SSD_KEY_RESERVED, resid, csio->dxfer_len)); 2095 2096 if (csio->cdb_io.cdb_bytes[0] == SA_WRITE) { 2097 if (sense->flags & SSD_FILEMARK) { 2098 xpt_print_path(csio->ccb_h.path); 2099 printf("filemark detected on write?\n"); 2100 if (softc->fileno != (daddr_t) -1) { 2101 softc->fileno++; 2102 softc->blkno = 0; 2103 } 2104 } 2105 if (sense->flags & SSD_EOM) { 2106 csio->resid = resid; 2107 if (defer_action) { 2108 error = -1; 2109 softc->flags |= SA_FLAG_EOM_PENDING; 2110 } else { 2111 error = ENOSPC; 2112 } 2113 } 2114 } else { 2115 if (sense_key == SSD_KEY_BLANK_CHECK) { 2116 csio->resid = resid; 2117 if (defer_action) { 2118 error = -1; 2119 softc->flags |= SA_FLAG_EOM_PENDING; 2120 } else { 2121 error = EIO; 2122 } 2123 } 2124 if (sense->flags & SSD_FILEMARK) { 2125 csio->resid = resid; 2126 if (defer_action) { 2127 error = -1; 2128 softc->flags |= SA_FLAG_EOF_PENDING; 2129 } 2130 /* 2131 * Unconditionally, if we detected a filemark on a read, 2132 * mark that we've run moved a file ahead. 2133 */ 2134 if (softc->fileno != (daddr_t) -1) { 2135 softc->fileno++; 2136 softc->blkno = 0; 2137 } 2138 } 2139 } 2140 /* 2141 * Incorrect Length usually applies to read, but can apply to writes. 2142 */ 2143 if (error == 0 && (sense->flags & SSD_ILI)) { 2144 if (info < 0) { 2145 xpt_print_path(csio->ccb_h.path); 2146 printf(toobig, csio->dxfer_len - info); 2147 csio->resid = csio->dxfer_len; 2148 error = EIO; 2149 } else { 2150 csio->resid = resid; 2151 if ((softc->flags & SA_FLAG_FIXED) != 0) { 2152 if (defer_action) 2153 softc->flags |= SA_FLAG_EIO_PENDING; 2154 else 2155 error = EIO; 2156 } 2157 /* 2158 * Bump the block number if we hadn't seen a filemark. 2159 * Do this independent of errors (we've moved anyway). 2160 */ 2161 if ((sense->flags & SSD_FILEMARK) == 0) { 2162 if (softc->blkno != (daddr_t) -1) { 2163 softc->blkno++; 2164 } 2165 } 2166 } 2167 } 2168 if (error == 0) 2169 return (cam_periph_error(ccb, cflgs, sflgs, &softc->saved_ccb)); 2170 2171 if (error == -1) 2172 return (0); 2173 else 2174 return (error); 2175 } 2176 2177 static int 2178 sagetparams(struct cam_periph *periph, sa_params params_to_get, 2179 u_int32_t *blocksize, u_int8_t *density, u_int32_t *numblocks, 2180 int *buff_mode, u_int8_t *write_protect, u_int8_t *speed, 2181 int *comp_supported, int *comp_enabled, u_int32_t *comp_algorithm, 2182 sa_comp_t *tcs) 2183 { 2184 sa_comp_t *ntcs; 2185 struct scsi_data_compression_page *comp_page; 2186 union ccb *ccb; 2187 void *mode_buffer; 2188 struct scsi_mode_header_6 *mode_hdr; 2189 struct scsi_mode_blk_desc *mode_blk; 2190 int mode_buffer_len; 2191 struct sa_softc *softc; 2192 u_int8_t cpage; 2193 int error; 2194 cam_status status; 2195 2196 if (tcs) 2197 comp_page = &tcs->dcomp; 2198 else 2199 comp_page = NULL; 2200 2201 softc = (struct sa_softc *)periph->softc; 2202 2203 ccb = cam_periph_getccb(periph, 1); 2204 cpage = SA_DATA_COMPRESSION_PAGE; 2205 2206 retry: 2207 mode_buffer_len = sizeof(*mode_hdr) + sizeof(*mode_blk); 2208 2209 if (params_to_get & SA_PARAM_COMPRESSION) { 2210 if (softc->quirks & SA_QUIRK_NOCOMP) { 2211 *comp_supported = FALSE; 2212 params_to_get &= ~SA_PARAM_COMPRESSION; 2213 } else 2214 mode_buffer_len += sizeof (sa_comp_t); 2215 } 2216 mode_buffer = malloc(mode_buffer_len, M_TEMP, M_WAITOK); 2217 2218 bzero(mode_buffer, mode_buffer_len); 2219 2220 mode_hdr = (struct scsi_mode_header_6 *)mode_buffer; 2221 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 2222 2223 if (params_to_get & SA_PARAM_COMPRESSION) 2224 ntcs = (sa_comp_t *) &mode_blk[1]; 2225 else 2226 ntcs = NULL; 2227 2228 /* it is safe to retry this */ 2229 scsi_mode_sense(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 2230 SMS_PAGE_CTRL_CURRENT, (params_to_get & SA_PARAM_COMPRESSION) ? 2231 cpage : SMS_VENDOR_SPECIFIC_PAGE, mode_buffer, mode_buffer_len, 2232 SSD_FULL_SIZE, 5000); 2233 2234 error = cam_periph_runccb(ccb, saerror, 0, 2235 SF_NO_PRINT, &softc->device_stats); 2236 2237 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 2238 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 2239 2240 status = ccb->ccb_h.status & CAM_STATUS_MASK; 2241 2242 if (error == EINVAL && (params_to_get & SA_PARAM_COMPRESSION) != 0) { 2243 /* 2244 * Hmm. Let's see if we can try another page... 2245 * If we've already done that, give up on compression 2246 * for this device and remember this for the future 2247 * and attempt the request without asking for compression 2248 * info. 2249 */ 2250 if (cpage == SA_DATA_COMPRESSION_PAGE) { 2251 cpage = SA_DEVICE_CONFIGURATION_PAGE; 2252 goto retry; 2253 } 2254 softc->quirks |= SA_QUIRK_NOCOMP; 2255 free(mode_buffer, M_TEMP); 2256 goto retry; 2257 } else if (status == CAM_SCSI_STATUS_ERROR) { 2258 /* Tell the user about the fatal error. */ 2259 scsi_sense_print(&ccb->csio); 2260 goto sagetparamsexit; 2261 } 2262 2263 /* 2264 * If the user only wants the compression information, and 2265 * the device doesn't send back the block descriptor, it's 2266 * no big deal. If the user wants more than just 2267 * compression, though, and the device doesn't pass back the 2268 * block descriptor, we need to send another mode sense to 2269 * get the block descriptor. 2270 */ 2271 if ((mode_hdr->blk_desc_len == 0) && 2272 (params_to_get & SA_PARAM_COMPRESSION) && 2273 (params_to_get & ~(SA_PARAM_COMPRESSION))) { 2274 2275 /* 2276 * Decrease the mode buffer length by the size of 2277 * the compression page, to make sure the data 2278 * there doesn't get overwritten. 2279 */ 2280 mode_buffer_len -= sizeof (sa_comp_t); 2281 2282 /* 2283 * Now move the compression page that we presumably 2284 * got back down the memory chunk a little bit so 2285 * it doesn't get spammed. 2286 */ 2287 bcopy(&mode_hdr[1], ntcs, sizeof (sa_comp_t)); 2288 2289 /* 2290 * Now, we issue another mode sense and just ask 2291 * for the block descriptor, etc. 2292 */ 2293 2294 scsi_mode_sense(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 2295 SMS_PAGE_CTRL_CURRENT, SMS_VENDOR_SPECIFIC_PAGE, 2296 mode_buffer, mode_buffer_len, SSD_FULL_SIZE, 5000); 2297 2298 error = cam_periph_runccb(ccb, saerror, 0, 0, 2299 &softc->device_stats); 2300 2301 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 2302 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 2303 2304 if (error != 0) 2305 goto sagetparamsexit; 2306 } 2307 2308 if (params_to_get & SA_PARAM_BLOCKSIZE) 2309 *blocksize = scsi_3btoul(mode_blk->blklen); 2310 2311 if (params_to_get & SA_PARAM_NUMBLOCKS) 2312 *numblocks = scsi_3btoul(mode_blk->nblocks); 2313 2314 if (params_to_get & SA_PARAM_BUFF_MODE) 2315 *buff_mode = mode_hdr->dev_spec & SMH_SA_BUF_MODE_MASK; 2316 2317 if (params_to_get & SA_PARAM_DENSITY) 2318 *density = mode_blk->density; 2319 2320 if (params_to_get & SA_PARAM_WP) 2321 *write_protect = (mode_hdr->dev_spec & SMH_SA_WP)? TRUE : FALSE; 2322 2323 if (params_to_get & SA_PARAM_SPEED) 2324 *speed = mode_hdr->dev_spec & SMH_SA_SPEED_MASK; 2325 2326 if (params_to_get & SA_PARAM_COMPRESSION) { 2327 if (cpage == SA_DATA_COMPRESSION_PAGE) { 2328 struct scsi_data_compression_page *cp = &ntcs->dcomp; 2329 *comp_supported = 2330 (cp->dce_and_dcc & SA_DCP_DCC)? TRUE : FALSE; 2331 *comp_enabled = 2332 (cp->dce_and_dcc & SA_DCP_DCE)? TRUE : FALSE; 2333 *comp_algorithm = scsi_4btoul(cp->comp_algorithm); 2334 } else { 2335 struct scsi_dev_conf_page *cp = &ntcs->dconf; 2336 /* 2337 * We don't really know whether this device supports 2338 * Data Compression if the the algorithm field is 2339 * zero. Just say we do. 2340 */ 2341 *comp_supported = TRUE; 2342 *comp_enabled = 2343 (cp->sel_comp_alg != SA_COMP_NONE)? TRUE : FALSE; 2344 *comp_algorithm = cp->sel_comp_alg; 2345 } 2346 if (tcs != NULL) 2347 bcopy(ntcs, tcs , sizeof (sa_comp_t)); 2348 } 2349 2350 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 2351 int idx; 2352 char *xyz = mode_buffer; 2353 xpt_print_path(periph->path); 2354 printf("Mode Sense Data="); 2355 for (idx = 0; idx < mode_buffer_len; idx++) 2356 printf(" 0x%02x", xyz[idx] & 0xff); 2357 printf("\n"); 2358 } 2359 2360 sagetparamsexit: 2361 2362 xpt_release_ccb(ccb); 2363 free(mode_buffer, M_TEMP); 2364 return(error); 2365 } 2366 2367 /* 2368 * The purpose of this function is to set one of four different parameters 2369 * for a tape drive: 2370 * - blocksize 2371 * - density 2372 * - compression / compression algorithm 2373 * - buffering mode 2374 * 2375 * The assumption is that this will be called from saioctl(), and therefore 2376 * from a process context. Thus the waiting malloc calls below. If that 2377 * assumption ever changes, the malloc calls should be changed to be 2378 * NOWAIT mallocs. 2379 * 2380 * Any or all of the four parameters may be set when this function is 2381 * called. It should handle setting more than one parameter at once. 2382 */ 2383 static int 2384 sasetparams(struct cam_periph *periph, sa_params params_to_set, 2385 u_int32_t blocksize, u_int8_t density, u_int32_t calg, 2386 u_int32_t sense_flags) 2387 { 2388 struct sa_softc *softc; 2389 u_int32_t current_blocksize; 2390 u_int32_t current_calg; 2391 u_int8_t current_density; 2392 u_int8_t current_speed; 2393 int comp_enabled, comp_supported; 2394 void *mode_buffer; 2395 int mode_buffer_len; 2396 struct scsi_mode_header_6 *mode_hdr; 2397 struct scsi_mode_blk_desc *mode_blk; 2398 sa_comp_t *ccomp, *cpage; 2399 int buff_mode; 2400 union ccb *ccb = NULL; 2401 int error; 2402 2403 softc = (struct sa_softc *)periph->softc; 2404 2405 ccomp = malloc(sizeof (sa_comp_t), M_TEMP, M_WAITOK); 2406 2407 /* 2408 * Since it doesn't make sense to set the number of blocks, or 2409 * write protection, we won't try to get the current value. We 2410 * always want to get the blocksize, so we can set it back to the 2411 * proper value. 2412 */ 2413 error = sagetparams(periph, 2414 params_to_set | SA_PARAM_BLOCKSIZE | SA_PARAM_SPEED, 2415 ¤t_blocksize, ¤t_density, NULL, &buff_mode, NULL, 2416 ¤t_speed, &comp_supported, &comp_enabled, 2417 ¤t_calg, ccomp); 2418 2419 if (error != 0) { 2420 free(ccomp, M_TEMP); 2421 return(error); 2422 } 2423 2424 mode_buffer_len = sizeof(*mode_hdr) + sizeof(*mode_blk); 2425 if (params_to_set & SA_PARAM_COMPRESSION) 2426 mode_buffer_len += sizeof (sa_comp_t); 2427 2428 mode_buffer = malloc(mode_buffer_len, M_TEMP, M_WAITOK); 2429 bzero(mode_buffer, mode_buffer_len); 2430 2431 mode_hdr = (struct scsi_mode_header_6 *)mode_buffer; 2432 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 2433 2434 if (params_to_set & SA_PARAM_COMPRESSION) { 2435 cpage = (sa_comp_t *)&mode_blk[1]; 2436 bcopy(ccomp, cpage, sizeof (sa_comp_t)); 2437 } else 2438 cpage = NULL; 2439 2440 /* 2441 * If the caller wants us to set the blocksize, use the one they 2442 * pass in. Otherwise, use the blocksize we got back from the 2443 * mode select above. 2444 */ 2445 if (params_to_set & SA_PARAM_BLOCKSIZE) 2446 scsi_ulto3b(blocksize, mode_blk->blklen); 2447 else 2448 scsi_ulto3b(current_blocksize, mode_blk->blklen); 2449 2450 /* 2451 * Set density if requested, else preserve old density. 2452 * SCSI_SAME_DENSITY only applies to SCSI-2 or better 2453 * devices, else density we've latched up in our softc. 2454 */ 2455 if (params_to_set & SA_PARAM_DENSITY) { 2456 mode_blk->density = density; 2457 } else if (softc->scsi_rev > SCSI_REV_CCS) { 2458 mode_blk->density = SCSI_SAME_DENSITY; 2459 } else { 2460 mode_blk->density = softc->media_density; 2461 } 2462 2463 /* 2464 * For mode selects, these two fields must be zero. 2465 */ 2466 mode_hdr->data_length = 0; 2467 mode_hdr->medium_type = 0; 2468 2469 /* set the speed to the current value */ 2470 mode_hdr->dev_spec = current_speed; 2471 2472 /* set single-initiator buffering mode */ 2473 mode_hdr->dev_spec |= SMH_SA_BUF_MODE_SIBUF; 2474 2475 mode_hdr->blk_desc_len = sizeof(struct scsi_mode_blk_desc); 2476 2477 /* 2478 * First, if the user wants us to set the compression algorithm or 2479 * just turn compression on, check to make sure that this drive 2480 * supports compression. 2481 */ 2482 if (params_to_set & SA_PARAM_COMPRESSION) { 2483 /* 2484 * If the compression algorithm is 0, disable compression. 2485 * If the compression algorithm is non-zero, enable 2486 * compression and set the compression type to the 2487 * specified compression algorithm, unless the algorithm is 2488 * MT_COMP_ENABLE. In that case, we look at the 2489 * compression algorithm that is currently set and if it is 2490 * non-zero, we leave it as-is. If it is zero, and we have 2491 * saved a compression algorithm from a time when 2492 * compression was enabled before, set the compression to 2493 * the saved value. 2494 */ 2495 switch (ccomp->hdr.pagecode) { 2496 case SA_DATA_COMPRESSION_PAGE: 2497 if (ccomp->dcomp.dce_and_dcc & SA_DCP_DCC) { 2498 struct scsi_data_compression_page *dcp = &cpage->dcomp; 2499 if (calg == 0) { 2500 /* disable compression */ 2501 dcp->dce_and_dcc &= ~SA_DCP_DCE; 2502 break; 2503 } 2504 /* enable compression */ 2505 dcp->dce_and_dcc |= SA_DCP_DCE; 2506 /* enable decompression */ 2507 dcp->dde_and_red |= SA_DCP_DDE; 2508 if (calg != MT_COMP_ENABLE) { 2509 scsi_ulto4b(calg, dcp->comp_algorithm); 2510 } else if (scsi_4btoul(dcp->comp_algorithm) == 0 && 2511 softc->saved_comp_algorithm != 0) { 2512 scsi_ulto4b(softc->saved_comp_algorithm, 2513 dcp->comp_algorithm); 2514 } 2515 break; 2516 } 2517 case SA_DEVICE_CONFIGURATION_PAGE: /* NOT YET */ 2518 { 2519 struct scsi_dev_conf_page *dcp = &cpage->dconf; 2520 if (calg == 0) { 2521 dcp->sel_comp_alg = SA_COMP_NONE; 2522 break; 2523 } 2524 if (calg != MT_COMP_ENABLE) { 2525 dcp->sel_comp_alg = calg; 2526 } else if (dcp->sel_comp_alg == SA_COMP_NONE && 2527 softc->saved_comp_algorithm != 0) { 2528 dcp->sel_comp_alg = softc->saved_comp_algorithm; 2529 } 2530 break; 2531 } 2532 default: 2533 /* 2534 * The drive doesn't support compression, 2535 * so turn off the set compression bit. 2536 */ 2537 params_to_set &= ~SA_PARAM_COMPRESSION; 2538 xpt_print_path(periph->path); 2539 printf("device does not support compression\n"); 2540 /* 2541 * If that was the only thing the user wanted us to set, 2542 * clean up allocated resources and return with 2543 * 'operation not supported'. 2544 */ 2545 if (params_to_set == SA_PARAM_NONE) { 2546 free(mode_buffer, M_TEMP); 2547 return(ENODEV); 2548 } 2549 2550 /* 2551 * That wasn't the only thing the user wanted us to set. 2552 * So, decrease the stated mode buffer length by the 2553 * size of the compression mode page. 2554 */ 2555 mode_buffer_len -= sizeof(sa_comp_t); 2556 } 2557 } 2558 2559 ccb = cam_periph_getccb(periph, 1); 2560 2561 /* It is safe to retry this operation */ 2562 scsi_mode_select(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, 2563 (params_to_set & SA_PARAM_COMPRESSION)? TRUE : FALSE, 2564 FALSE, mode_buffer, mode_buffer_len, SSD_FULL_SIZE, 5000); 2565 2566 error = cam_periph_runccb(ccb, saerror, 0, 2567 sense_flags, &softc->device_stats); 2568 2569 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 2570 int idx; 2571 char *xyz = mode_buffer; 2572 xpt_print_path(periph->path); 2573 printf("Err%d, Mode Select Data=", error); 2574 for (idx = 0; idx < mode_buffer_len; idx++) 2575 printf(" 0x%02x", xyz[idx] & 0xff); 2576 printf("\n"); 2577 } 2578 2579 2580 if (error == 0) { 2581 xpt_release_ccb(ccb); 2582 } else { 2583 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 2584 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, 0); 2585 2586 /* 2587 * If we were setting the blocksize, and that failed, we 2588 * want to set it to its original value. If we weren't 2589 * setting the blocksize, we don't want to change it. 2590 */ 2591 scsi_ulto3b(current_blocksize, mode_blk->blklen); 2592 2593 /* 2594 * Set density if requested, else preserve old density. 2595 * SCSI_SAME_DENSITY only applies to SCSI-2 or better 2596 * devices, else density we've latched up in our softc. 2597 */ 2598 if (params_to_set & SA_PARAM_DENSITY) { 2599 mode_blk->density = current_density; 2600 } else if (softc->scsi_rev > SCSI_REV_CCS) { 2601 mode_blk->density = SCSI_SAME_DENSITY; 2602 } else { 2603 mode_blk->density = softc->media_density; 2604 } 2605 2606 if (params_to_set & SA_PARAM_COMPRESSION) 2607 bcopy(ccomp, cpage, sizeof (sa_comp_t)); 2608 2609 /* 2610 * The retry count is the only CCB field that might have been 2611 * changed that we care about, so reset it back to 1. 2612 */ 2613 ccb->ccb_h.retry_count = 1; 2614 cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 2615 2616 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 2617 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, 0); 2618 2619 xpt_release_ccb(ccb); 2620 } 2621 2622 if (ccomp != NULL) 2623 free(ccomp, M_TEMP); 2624 2625 if (params_to_set & SA_PARAM_COMPRESSION) { 2626 if (error) { 2627 softc->flags &= ~SA_FLAG_COMP_ENABLED; 2628 /* 2629 * Even if we get an error setting compression, 2630 * do not say that we don't support it. We could 2631 * have been wrong, or it may be media specific. 2632 * softc->flags &= ~SA_FLAG_COMP_SUPP; 2633 */ 2634 softc->saved_comp_algorithm = softc->comp_algorithm; 2635 softc->comp_algorithm = 0; 2636 } else { 2637 softc->flags |= SA_FLAG_COMP_ENABLED; 2638 softc->comp_algorithm = calg; 2639 } 2640 } 2641 2642 free(mode_buffer, M_TEMP); 2643 return(error); 2644 } 2645 2646 static void 2647 saprevent(struct cam_periph *periph, int action) 2648 { 2649 struct sa_softc *softc; 2650 union ccb *ccb; 2651 int error, sf; 2652 2653 softc = (struct sa_softc *)periph->softc; 2654 2655 if ((action == PR_ALLOW) && (softc->flags & SA_FLAG_TAPE_LOCKED) == 0) 2656 return; 2657 if ((action == PR_PREVENT) && (softc->flags & SA_FLAG_TAPE_LOCKED) != 0) 2658 return; 2659 2660 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) 2661 sf = 0; 2662 else 2663 sf = SF_QUIET_IR; 2664 2665 ccb = cam_periph_getccb(periph, 1); 2666 2667 /* It is safe to retry this operation */ 2668 scsi_prevent(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, action, 2669 SSD_FULL_SIZE, 60000); 2670 2671 /* 2672 * We can be quiet about illegal requests. 2673 */ 2674 error = cam_periph_runccb(ccb, saerror, 0, sf, &softc->device_stats); 2675 2676 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 2677 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 2678 2679 if (error == 0) { 2680 if (action == PR_ALLOW) 2681 softc->flags &= ~SA_FLAG_TAPE_LOCKED; 2682 else 2683 softc->flags |= SA_FLAG_TAPE_LOCKED; 2684 } 2685 2686 xpt_release_ccb(ccb); 2687 } 2688 2689 static int 2690 sarewind(struct cam_periph *periph) 2691 { 2692 union ccb *ccb; 2693 struct sa_softc *softc; 2694 int error; 2695 2696 softc = (struct sa_softc *)periph->softc; 2697 2698 ccb = cam_periph_getccb(periph, 1); 2699 2700 /* It is safe to retry this operation */ 2701 scsi_rewind(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 2702 SSD_FULL_SIZE, (SA_REWIND_TIMEOUT) * 60 * 1000); 2703 2704 softc->dsreg = MTIO_DSREG_REW; 2705 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 2706 softc->dsreg = MTIO_DSREG_REST; 2707 2708 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 2709 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 2710 2711 xpt_release_ccb(ccb); 2712 if (error == 0) 2713 softc->fileno = softc->blkno = (daddr_t) 0; 2714 else 2715 softc->fileno = softc->blkno = (daddr_t) -1; 2716 return (error); 2717 } 2718 2719 static int 2720 saspace(struct cam_periph *periph, int count, scsi_space_code code) 2721 { 2722 union ccb *ccb; 2723 struct sa_softc *softc; 2724 int error; 2725 2726 softc = (struct sa_softc *)periph->softc; 2727 2728 ccb = cam_periph_getccb(periph, 1); 2729 2730 /* This cannot be retried */ 2731 2732 scsi_space(&ccb->csio, 0, sadone, MSG_SIMPLE_Q_TAG, code, count, 2733 SSD_FULL_SIZE, (SA_SPACE_TIMEOUT) * 60 * 1000); 2734 2735 softc->dsreg = (count < 0)? MTIO_DSREG_REV : MTIO_DSREG_FWD; 2736 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 2737 softc->dsreg = MTIO_DSREG_REST; 2738 2739 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 2740 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 2741 2742 xpt_release_ccb(ccb); 2743 2744 /* 2745 * If a spacing operation has failed, we need to invalidate 2746 * this mount. 2747 * 2748 * If the spacing operation was setmarks or to end of recorded data, 2749 * we no longer know our relative position. 2750 * 2751 * We are not managing residuals here (really). 2752 */ 2753 if (error) { 2754 softc->fileno = softc->blkno = (daddr_t) -1; 2755 } else if (code == SS_SETMARKS || code == SS_EOD) { 2756 softc->fileno = softc->blkno = (daddr_t) -1; 2757 } else if (code == SS_FILEMARKS && softc->fileno != (daddr_t) -1) { 2758 softc->fileno += count; 2759 softc->blkno = 0; 2760 } else if (code == SS_BLOCKS && softc->blkno != (daddr_t) -1) { 2761 softc->blkno += count; 2762 } 2763 return (error); 2764 } 2765 2766 static int 2767 sawritefilemarks(struct cam_periph *periph, int nmarks, int setmarks) 2768 { 2769 union ccb *ccb; 2770 struct sa_softc *softc; 2771 int error; 2772 2773 softc = (struct sa_softc *)periph->softc; 2774 2775 ccb = cam_periph_getccb(periph, 1); 2776 2777 softc->dsreg = MTIO_DSREG_FMK; 2778 /* this *must* not be retried */ 2779 scsi_write_filemarks(&ccb->csio, 0, sadone, MSG_SIMPLE_Q_TAG, 2780 FALSE, setmarks, nmarks, SSD_FULL_SIZE, 60000); 2781 softc->dsreg = MTIO_DSREG_REST; 2782 2783 2784 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 2785 2786 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 2787 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 2788 2789 /* 2790 * XXXX: Get back the actual number of filemarks written 2791 * XXXX: (there can be a residual). 2792 */ 2793 if (error == 0 && nmarks) { 2794 struct sa_softc *softc = (struct sa_softc *)periph->softc; 2795 softc->filemarks += nmarks; 2796 } 2797 xpt_release_ccb(ccb); 2798 2799 /* 2800 * Update relative positions (if we're doing that). 2801 */ 2802 if (error) { 2803 softc->fileno = softc->blkno = (daddr_t) -1; 2804 } else if (softc->fileno != (daddr_t) -1) { 2805 softc->fileno += nmarks; 2806 softc->blkno = 0; 2807 } 2808 return (error); 2809 } 2810 2811 static int 2812 sardpos(struct cam_periph *periph, int hard, u_int32_t *blkptr) 2813 { 2814 struct scsi_tape_position_data loc; 2815 union ccb *ccb; 2816 struct sa_softc *softc = (struct sa_softc *)periph->softc; 2817 int error; 2818 2819 /* 2820 * We have to try and flush any buffered writes here if we were writing. 2821 * 2822 * The SCSI specification is vague enough about situations like 2823 * different sized blocks in a tape drive buffer as to make one 2824 * wary about trying to figure out the actual block location value 2825 * if data is in the tape drive buffer. 2826 */ 2827 ccb = cam_periph_getccb(periph, 1); 2828 2829 if (softc->flags & SA_FLAG_TAPE_WRITTEN) { 2830 error = sawritefilemarks(periph, 0, 0); 2831 if (error && error != EACCES) 2832 return (error); 2833 } 2834 2835 scsi_read_position(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, 2836 hard, &loc, SSD_FULL_SIZE, 5000); 2837 softc->dsreg = MTIO_DSREG_RBSY; 2838 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 2839 softc->dsreg = MTIO_DSREG_REST; 2840 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 2841 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, 0); 2842 2843 if (error == 0) { 2844 if (loc.flags & SA_RPOS_UNCERTAIN) { 2845 error = EINVAL; /* nothing is certain */ 2846 } else { 2847 #if 0 2848 u_int32_t firstblk, lastblk, nbufblk, nbufbyte; 2849 2850 firstblk = scsi_4btoul(loc.firstblk); 2851 lastblk = scsi_4btoul(loc.lastblk); 2852 nbufblk = scsi_4btoul(loc.nbufblk); 2853 nbufbyte = scsi_4btoul(loc.nbufbyte); 2854 if (lastblk || nbufblk || nbufbyte) { 2855 xpt_print_path(periph->path); 2856 printf("rdpos firstblk 0x%x lastblk 0x%x bufblk" 2857 " 0x%x bufbyte 0x%x\n", firstblk, lastblk, 2858 nbufblk, nbufbyte); 2859 } 2860 *blkptr = firstblk; 2861 #else 2862 *blkptr = scsi_4btoul(loc.firstblk); 2863 #endif 2864 } 2865 } 2866 2867 xpt_release_ccb(ccb); 2868 return (error); 2869 } 2870 2871 static int 2872 sasetpos(struct cam_periph *periph, int hard, u_int32_t *blkptr) 2873 { 2874 union ccb *ccb; 2875 struct sa_softc *softc; 2876 int error; 2877 2878 /* 2879 * We used to try and flush any buffered writes here. 2880 * Now we push this onto user applications to either 2881 * flush the pending writes themselves (via a zero count 2882 * WRITE FILEMARKS command) or they can trust their tape 2883 * drive to do this correctly for them. 2884 */ 2885 2886 softc = (struct sa_softc *)periph->softc; 2887 ccb = cam_periph_getccb(periph, 1); 2888 2889 2890 scsi_set_position(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, 2891 hard, *blkptr, SSD_FULL_SIZE, 60 * 60 * 1000); 2892 2893 softc->dsreg = MTIO_DSREG_POS; 2894 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 2895 softc->dsreg = MTIO_DSREG_REST; 2896 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 2897 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, 0); 2898 xpt_release_ccb(ccb); 2899 /* 2900 * Note relative file && block number position as now unknown. 2901 */ 2902 softc->fileno = softc->blkno = (daddr_t) -1; 2903 return (error); 2904 } 2905 2906 static int 2907 saretension(struct cam_periph *periph) 2908 { 2909 union ccb *ccb; 2910 struct sa_softc *softc; 2911 int error; 2912 2913 softc = (struct sa_softc *)periph->softc; 2914 2915 ccb = cam_periph_getccb(periph, 1); 2916 2917 /* It is safe to retry this operation */ 2918 scsi_load_unload(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 2919 FALSE, TRUE, TRUE, SSD_FULL_SIZE, (SA_ERASE_TIMEOUT) * 60 * 1000); 2920 2921 softc->dsreg = MTIO_DSREG_TEN; 2922 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 2923 softc->dsreg = MTIO_DSREG_REST; 2924 2925 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 2926 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 2927 xpt_release_ccb(ccb); 2928 if (error == 0) 2929 softc->fileno = softc->blkno = (daddr_t) 0; 2930 else 2931 softc->fileno = softc->blkno = (daddr_t) -1; 2932 return(error); 2933 } 2934 2935 static int 2936 sareservereleaseunit(struct cam_periph *periph, int reserve) 2937 { 2938 union ccb *ccb; 2939 struct sa_softc *softc; 2940 int error, sflag; 2941 2942 softc = (struct sa_softc *)periph->softc; 2943 2944 /* 2945 * We set SF_RETRY_UA, since this is often the first command run 2946 * when a tape device is opened, and there may be a unit attention 2947 * condition pending. 2948 */ 2949 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) 2950 sflag = SF_RETRY_UA; 2951 else 2952 sflag = SF_RETRY_UA|SF_QUIET_IR; 2953 2954 sflag |= SF_RETRY_SELTO; 2955 2956 ccb = cam_periph_getccb(periph, 1); 2957 2958 /* It is safe to retry this operation */ 2959 scsi_reserve_release_unit(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, 2960 FALSE, 0, SSD_FULL_SIZE, 5000, reserve); 2961 2962 softc->dsreg = MTIO_DSREG_RBSY; 2963 error = cam_periph_runccb(ccb, saerror, 0, sflag, &softc->device_stats); 2964 softc->dsreg = MTIO_DSREG_REST; 2965 2966 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 2967 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 2968 2969 xpt_release_ccb(ccb); 2970 2971 /* 2972 * If the error was Illegal Request, then the device doesn't support 2973 * RESERVE/RELEASE. This is not an error. 2974 */ 2975 if (error == EINVAL) { 2976 error = 0; 2977 } 2978 2979 return (error); 2980 } 2981 2982 static int 2983 saloadunload(struct cam_periph *periph, int load) 2984 { 2985 union ccb *ccb; 2986 struct sa_softc *softc; 2987 int error; 2988 2989 softc = (struct sa_softc *)periph->softc; 2990 2991 ccb = cam_periph_getccb(periph, 1); 2992 2993 /* It is safe to retry this operation */ 2994 scsi_load_unload(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 2995 FALSE, FALSE, load, SSD_FULL_SIZE, 60000); 2996 2997 softc->dsreg = (load)? MTIO_DSREG_LD : MTIO_DSREG_UNL; 2998 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 2999 softc->dsreg = MTIO_DSREG_REST; 3000 3001 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3002 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 3003 xpt_release_ccb(ccb); 3004 3005 if (error || load == 0) 3006 softc->fileno = softc->blkno = (daddr_t) -1; 3007 else if (error == 0) 3008 softc->fileno = softc->blkno = (daddr_t) 0; 3009 return (error); 3010 } 3011 3012 static int 3013 saerase(struct cam_periph *periph, int longerase) 3014 { 3015 3016 union ccb *ccb; 3017 struct sa_softc *softc; 3018 int error; 3019 3020 softc = (struct sa_softc *)periph->softc; 3021 3022 ccb = cam_periph_getccb(periph, 1); 3023 3024 scsi_erase(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, FALSE, longerase, 3025 SSD_FULL_SIZE, (SA_ERASE_TIMEOUT) * 60 * 1000); 3026 3027 softc->dsreg = MTIO_DSREG_ZER; 3028 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 3029 softc->dsreg = MTIO_DSREG_REST; 3030 3031 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3032 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 3033 xpt_release_ccb(ccb); 3034 return (error); 3035 } 3036 3037 #endif /* KERNEL */ 3038 3039 /* 3040 * Read tape block limits command. 3041 */ 3042 void 3043 scsi_read_block_limits(struct ccb_scsiio *csio, u_int32_t retries, 3044 void (*cbfcnp)(struct cam_periph *, union ccb *), 3045 u_int8_t tag_action, 3046 struct scsi_read_block_limits_data *rlimit_buf, 3047 u_int8_t sense_len, u_int32_t timeout) 3048 { 3049 struct scsi_read_block_limits *scsi_cmd; 3050 3051 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_IN, tag_action, 3052 (u_int8_t *)rlimit_buf, sizeof(*rlimit_buf), sense_len, 3053 sizeof(*scsi_cmd), timeout); 3054 3055 scsi_cmd = (struct scsi_read_block_limits *)&csio->cdb_io.cdb_bytes; 3056 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3057 scsi_cmd->opcode = READ_BLOCK_LIMITS; 3058 } 3059 3060 void 3061 scsi_sa_read_write(struct ccb_scsiio *csio, u_int32_t retries, 3062 void (*cbfcnp)(struct cam_periph *, union ccb *), 3063 u_int8_t tag_action, int readop, int sli, 3064 int fixed, u_int32_t length, u_int8_t *data_ptr, 3065 u_int32_t dxfer_len, u_int8_t sense_len, u_int32_t timeout) 3066 { 3067 struct scsi_sa_rw *scsi_cmd; 3068 3069 scsi_cmd = (struct scsi_sa_rw *)&csio->cdb_io.cdb_bytes; 3070 scsi_cmd->opcode = readop ? SA_READ : SA_WRITE; 3071 scsi_cmd->sli_fixed = 0; 3072 if (sli && readop) 3073 scsi_cmd->sli_fixed |= SAR_SLI; 3074 if (fixed) 3075 scsi_cmd->sli_fixed |= SARW_FIXED; 3076 scsi_ulto3b(length, scsi_cmd->length); 3077 scsi_cmd->control = 0; 3078 3079 cam_fill_csio(csio, retries, cbfcnp, readop ? CAM_DIR_IN : CAM_DIR_OUT, 3080 tag_action, data_ptr, dxfer_len, sense_len, 3081 sizeof(*scsi_cmd), timeout); 3082 } 3083 3084 void 3085 scsi_load_unload(struct ccb_scsiio *csio, u_int32_t retries, 3086 void (*cbfcnp)(struct cam_periph *, union ccb *), 3087 u_int8_t tag_action, int immediate, int eot, 3088 int reten, int load, u_int8_t sense_len, 3089 u_int32_t timeout) 3090 { 3091 struct scsi_load_unload *scsi_cmd; 3092 3093 scsi_cmd = (struct scsi_load_unload *)&csio->cdb_io.cdb_bytes; 3094 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3095 scsi_cmd->opcode = LOAD_UNLOAD; 3096 if (immediate) 3097 scsi_cmd->immediate = SLU_IMMED; 3098 if (eot) 3099 scsi_cmd->eot_reten_load |= SLU_EOT; 3100 if (reten) 3101 scsi_cmd->eot_reten_load |= SLU_RETEN; 3102 if (load) 3103 scsi_cmd->eot_reten_load |= SLU_LOAD; 3104 3105 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, 3106 NULL, 0, sense_len, sizeof(*scsi_cmd), timeout); 3107 } 3108 3109 void 3110 scsi_rewind(struct ccb_scsiio *csio, u_int32_t retries, 3111 void (*cbfcnp)(struct cam_periph *, union ccb *), 3112 u_int8_t tag_action, int immediate, u_int8_t sense_len, 3113 u_int32_t timeout) 3114 { 3115 struct scsi_rewind *scsi_cmd; 3116 3117 scsi_cmd = (struct scsi_rewind *)&csio->cdb_io.cdb_bytes; 3118 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3119 scsi_cmd->opcode = REWIND; 3120 if (immediate) 3121 scsi_cmd->immediate = SREW_IMMED; 3122 3123 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3124 0, sense_len, sizeof(*scsi_cmd), timeout); 3125 } 3126 3127 void 3128 scsi_space(struct ccb_scsiio *csio, u_int32_t retries, 3129 void (*cbfcnp)(struct cam_periph *, union ccb *), 3130 u_int8_t tag_action, scsi_space_code code, 3131 u_int32_t count, u_int8_t sense_len, u_int32_t timeout) 3132 { 3133 struct scsi_space *scsi_cmd; 3134 3135 scsi_cmd = (struct scsi_space *)&csio->cdb_io.cdb_bytes; 3136 scsi_cmd->opcode = SPACE; 3137 scsi_cmd->code = code; 3138 scsi_ulto3b(count, scsi_cmd->count); 3139 scsi_cmd->control = 0; 3140 3141 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3142 0, sense_len, sizeof(*scsi_cmd), timeout); 3143 } 3144 3145 void 3146 scsi_write_filemarks(struct ccb_scsiio *csio, u_int32_t retries, 3147 void (*cbfcnp)(struct cam_periph *, union ccb *), 3148 u_int8_t tag_action, int immediate, int setmark, 3149 u_int32_t num_marks, u_int8_t sense_len, 3150 u_int32_t timeout) 3151 { 3152 struct scsi_write_filemarks *scsi_cmd; 3153 3154 scsi_cmd = (struct scsi_write_filemarks *)&csio->cdb_io.cdb_bytes; 3155 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3156 scsi_cmd->opcode = WRITE_FILEMARKS; 3157 if (immediate) 3158 scsi_cmd->byte2 |= SWFMRK_IMMED; 3159 if (setmark) 3160 scsi_cmd->byte2 |= SWFMRK_WSMK; 3161 3162 scsi_ulto3b(num_marks, scsi_cmd->num_marks); 3163 3164 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3165 0, sense_len, sizeof(*scsi_cmd), timeout); 3166 } 3167 3168 /* 3169 * The reserve and release unit commands differ only by their opcodes. 3170 */ 3171 void 3172 scsi_reserve_release_unit(struct ccb_scsiio *csio, u_int32_t retries, 3173 void (*cbfcnp)(struct cam_periph *, union ccb *), 3174 u_int8_t tag_action, int third_party, 3175 int third_party_id, u_int8_t sense_len, 3176 u_int32_t timeout, int reserve) 3177 { 3178 struct scsi_reserve_release_unit *scsi_cmd; 3179 3180 scsi_cmd = (struct scsi_reserve_release_unit *)&csio->cdb_io.cdb_bytes; 3181 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3182 3183 if (reserve) 3184 scsi_cmd->opcode = RESERVE_UNIT; 3185 else 3186 scsi_cmd->opcode = RELEASE_UNIT; 3187 3188 if (third_party) { 3189 scsi_cmd->lun_thirdparty |= SRRU_3RD_PARTY; 3190 scsi_cmd->lun_thirdparty |= 3191 ((third_party_id << SRRU_3RD_SHAMT) & SRRU_3RD_MASK); 3192 } 3193 3194 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3195 0, sense_len, sizeof(*scsi_cmd), timeout); 3196 } 3197 3198 void 3199 scsi_erase(struct ccb_scsiio *csio, u_int32_t retries, 3200 void (*cbfcnp)(struct cam_periph *, union ccb *), 3201 u_int8_t tag_action, int immediate, int long_erase, 3202 u_int8_t sense_len, u_int32_t timeout) 3203 { 3204 struct scsi_erase *scsi_cmd; 3205 3206 scsi_cmd = (struct scsi_erase *)&csio->cdb_io.cdb_bytes; 3207 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3208 3209 scsi_cmd->opcode = ERASE; 3210 3211 if (immediate) 3212 scsi_cmd->lun_imm_long |= SE_IMMED; 3213 3214 if (long_erase) 3215 scsi_cmd->lun_imm_long |= SE_LONG; 3216 3217 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3218 0, sense_len, sizeof(*scsi_cmd), timeout); 3219 } 3220 3221 /* 3222 * Read Tape Position command. 3223 */ 3224 void 3225 scsi_read_position(struct ccb_scsiio *csio, u_int32_t retries, 3226 void (*cbfcnp)(struct cam_periph *, union ccb *), 3227 u_int8_t tag_action, int hardsoft, 3228 struct scsi_tape_position_data *sbp, 3229 u_int8_t sense_len, u_int32_t timeout) 3230 { 3231 struct scsi_tape_read_position *scmd; 3232 3233 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_IN, tag_action, 3234 (u_int8_t *)sbp, sizeof (*sbp), sense_len, sizeof(*scmd), timeout); 3235 scmd = (struct scsi_tape_read_position *)&csio->cdb_io.cdb_bytes; 3236 bzero(scmd, sizeof(*scmd)); 3237 scmd->opcode = READ_POSITION; 3238 scmd->byte1 = hardsoft; 3239 } 3240 3241 /* 3242 * Set Tape Position command. 3243 */ 3244 void 3245 scsi_set_position(struct ccb_scsiio *csio, u_int32_t retries, 3246 void (*cbfcnp)(struct cam_periph *, union ccb *), 3247 u_int8_t tag_action, int hardsoft, u_int32_t blkno, 3248 u_int8_t sense_len, u_int32_t timeout) 3249 { 3250 struct scsi_tape_locate *scmd; 3251 3252 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, 3253 (u_int8_t *)NULL, 0, sense_len, sizeof(*scmd), timeout); 3254 scmd = (struct scsi_tape_locate *)&csio->cdb_io.cdb_bytes; 3255 bzero(scmd, sizeof(*scmd)); 3256 scmd->opcode = LOCATE; 3257 if (hardsoft) 3258 scmd->byte1 |= SA_SPOS_BT; 3259 scsi_ulto4b(blkno, scmd->blkaddr); 3260 } 3261