1 /* 2 * $FreeBSD$ 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 * Additional options that can be set for config: SA_1FM_AT_EOT 83 */ 84 #ifndef UNUSED_PARAMETER 85 #define UNUSED_PARAMETER(x) x = x 86 #endif 87 88 typedef enum { 89 SA_STATE_NORMAL, SA_STATE_ABNORMAL 90 } sa_state; 91 92 typedef enum { 93 SA_CCB_BUFFER_IO, 94 SA_CCB_WAITING 95 } sa_ccb_types; 96 97 #define ccb_type ppriv_field0 98 #define ccb_bp ppriv_ptr1 99 100 typedef enum { 101 SA_FLAG_OPEN = 0x0001, 102 SA_FLAG_FIXED = 0x0002, 103 SA_FLAG_TAPE_LOCKED = 0x0004, 104 SA_FLAG_TAPE_MOUNTED = 0x0008, 105 SA_FLAG_TAPE_WP = 0x0010, 106 SA_FLAG_TAPE_WRITTEN = 0x0020, 107 SA_FLAG_EOM_PENDING = 0x0040, 108 SA_FLAG_EIO_PENDING = 0x0080, 109 SA_FLAG_EOF_PENDING = 0x0100, 110 SA_FLAG_ERR_PENDING = (SA_FLAG_EOM_PENDING|SA_FLAG_EIO_PENDING| 111 SA_FLAG_EOF_PENDING), 112 SA_FLAG_INVALID = 0x0200, 113 SA_FLAG_COMP_ENABLED = 0x0400, 114 SA_FLAG_COMP_SUPP = 0x0800, 115 SA_FLAG_COMP_UNSUPP = 0x1000, 116 SA_FLAG_TAPE_FROZEN = 0x2000 117 } sa_flags; 118 119 typedef enum { 120 SA_MODE_REWIND = 0x00, 121 SA_MODE_NOREWIND = 0x01, 122 SA_MODE_OFFLINE = 0x02 123 } sa_mode; 124 125 typedef enum { 126 SA_PARAM_NONE = 0x00, 127 SA_PARAM_BLOCKSIZE = 0x01, 128 SA_PARAM_DENSITY = 0x02, 129 SA_PARAM_COMPRESSION = 0x04, 130 SA_PARAM_BUFF_MODE = 0x08, 131 SA_PARAM_NUMBLOCKS = 0x10, 132 SA_PARAM_WP = 0x20, 133 SA_PARAM_SPEED = 0x40, 134 SA_PARAM_ALL = 0x7f 135 } sa_params; 136 137 typedef enum { 138 SA_QUIRK_NONE = 0x00, 139 SA_QUIRK_NOCOMP = 0x01, /* can't deal with compression at all */ 140 SA_QUIRK_FIXED = 0x02, /* force fixed mode */ 141 SA_QUIRK_VARIABLE = 0x04, /* force variable mode */ 142 SA_QUIRK_2FM = 0x08, /* Needs Two File Marks at EOD */ 143 SA_QUIRK_1FM = 0x10 /* No more than 1 File Mark at EOD */ 144 } sa_quirks; 145 146 struct sa_softc { 147 sa_state state; 148 sa_flags flags; 149 sa_quirks quirks; 150 struct buf_queue_head buf_queue; 151 int queue_count; 152 struct devstat device_stats; 153 int blk_gran; 154 int blk_mask; 155 int blk_shift; 156 u_int32_t max_blk; 157 u_int32_t min_blk; 158 u_int32_t comp_algorithm; 159 u_int32_t saved_comp_algorithm; 160 u_int32_t media_blksize; 161 u_int32_t last_media_blksize; 162 u_int32_t media_numblks; 163 u_int8_t media_density; 164 u_int8_t speed; 165 u_int8_t scsi_rev; 166 u_int8_t dsreg; /* mtio mt_dsreg, redux */ 167 int buffer_mode; 168 int filemarks; 169 union ccb saved_ccb; 170 171 /* 172 * Relative to BOT Location. 173 */ 174 daddr_t fileno; 175 daddr_t blkno; 176 177 /* 178 * Latched Error Info 179 */ 180 struct { 181 struct scsi_sense_data _last_io_sense; 182 u_int32_t _last_io_resid; 183 u_int8_t _last_io_cdb[CAM_MAX_CDBLEN]; 184 struct scsi_sense_data _last_ctl_sense; 185 u_int32_t _last_ctl_resid; 186 u_int8_t _last_ctl_cdb[CAM_MAX_CDBLEN]; 187 #define last_io_sense errinfo._last_io_sense 188 #define last_io_resid errinfo._last_io_resid 189 #define last_io_cdb errinfo._last_io_cdb 190 #define last_ctl_sense errinfo._last_ctl_sense 191 #define last_ctl_resid errinfo._last_ctl_resid 192 #define last_ctl_cdb errinfo._last_ctl_cdb 193 } errinfo; 194 /* 195 * Misc other flags/state 196 */ 197 u_int32_t 198 : 31, 199 ctrl_mode : 1; /* control device open */ 200 }; 201 202 struct sa_quirk_entry { 203 struct scsi_inquiry_pattern inq_pat; /* matching pattern */ 204 sa_quirks quirks; /* specific quirk type */ 205 u_int32_t prefblk; /* preferred blocksize when in fixed mode */ 206 }; 207 208 static struct sa_quirk_entry sa_quirk_table[] = 209 { 210 { 211 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 212 "Python 25601*", "*"}, SA_QUIRK_NOCOMP, 0 213 }, 214 { 215 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 216 "VIPER 150*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 217 }, 218 { 219 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 220 "VIPER 2525*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 1024 221 }, 222 { 223 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 224 "T20*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 225 }, 226 { 227 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 228 "T4000*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 229 }, 230 { 231 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 232 "HP-88780*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 233 }, 234 { 235 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "KENNEDY", 236 "*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 237 }, 238 { 239 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "M4 DATA", 240 "123107 SCSI*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 241 }, 242 { /* jreynold@primenet.com */ 243 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "Seagate", 244 "STT8000N*", "*"}, SA_QUIRK_1FM, 0 245 }, 246 { /* mike@sentex.net */ 247 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "Seagate", 248 "STT20000*", "*"}, SA_QUIRK_1FM, 0 249 }, 250 { 251 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 252 " TDC 3600", "U07:"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 253 }, 254 { 255 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 256 " TDC 3800", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 257 }, 258 { 259 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 260 " TDC 4100", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 261 }, 262 { 263 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 264 " TDC 4200", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 265 }, 266 { 267 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 268 " SLR*", "*"}, SA_QUIRK_1FM, 0 269 }, 270 { 271 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "WANGTEK", 272 "5525ES*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 273 }, 274 { 275 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "WANGTEK", 276 "51000*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 1024 277 } 278 }; 279 280 static d_open_t saopen; 281 static d_close_t saclose; 282 static d_strategy_t sastrategy; 283 static d_ioctl_t saioctl; 284 static periph_init_t sainit; 285 static periph_ctor_t saregister; 286 static periph_oninv_t saoninvalidate; 287 static periph_dtor_t sacleanup; 288 static periph_start_t sastart; 289 static void saasync(void *callback_arg, u_int32_t code, 290 struct cam_path *path, void *arg); 291 static void sadone(struct cam_periph *periph, 292 union ccb *start_ccb); 293 static int saerror(union ccb *ccb, u_int32_t cam_flags, 294 u_int32_t sense_flags); 295 static int sacheckeod(struct cam_periph *periph); 296 static int sagetparams(struct cam_periph *periph, 297 sa_params params_to_get, 298 u_int32_t *blocksize, u_int8_t *density, 299 u_int32_t *numblocks, int *buff_mode, 300 u_int8_t *write_protect, u_int8_t *speed, 301 int *comp_supported, int *comp_enabled, 302 u_int32_t *comp_algorithm, 303 sa_comp_t *comp_page); 304 static int sasetparams(struct cam_periph *periph, 305 sa_params params_to_set, 306 u_int32_t blocksize, u_int8_t density, 307 u_int32_t comp_algorithm, 308 u_int32_t sense_flags); 309 static void saprevent(struct cam_periph *periph, int action); 310 static int sarewind(struct cam_periph *periph); 311 static int saspace(struct cam_periph *periph, int count, 312 scsi_space_code code); 313 static int samount(struct cam_periph *, int, dev_t); 314 static int saretension(struct cam_periph *periph); 315 static int sareservereleaseunit(struct cam_periph *periph, 316 int reserve); 317 static int saloadunload(struct cam_periph *periph, int load); 318 static int saerase(struct cam_periph *periph, int longerase); 319 static int sawritefilemarks(struct cam_periph *periph, 320 int nmarks, int setmarks); 321 static int sardpos(struct cam_periph *periph, int, u_int32_t *); 322 static int sasetpos(struct cam_periph *periph, int, u_int32_t *); 323 324 325 static struct periph_driver sadriver = 326 { 327 sainit, "sa", 328 TAILQ_HEAD_INITIALIZER(sadriver.units), /* generation */ 0 329 }; 330 331 DATA_SET(periphdriver_set, sadriver); 332 333 /* units are bits 4-7, 16-21 (1024 units) */ 334 #define SAUNIT(DEV) \ 335 (((minor(DEV) & 0xF0) >> 4) | ((minor(DEV) & 0x3f0000) >> 16)) 336 337 #define SAMODE(z) ((minor(z) & 0x3)) 338 #define SADENSITY(z) (((minor(z) >> 2) & 0x3)) 339 #define SA_IS_CTRL(z) (minor(z) & (1 << 29)) 340 341 /* For 2.2-stable support */ 342 #ifndef D_TAPE 343 #define D_TAPE 0 344 #endif 345 346 #define SA_CDEV_MAJOR 14 347 348 static struct cdevsw sa_cdevsw = { 349 /* open */ saopen, 350 /* close */ saclose, 351 /* read */ physread, 352 /* write */ physwrite, 353 /* ioctl */ saioctl, 354 /* poll */ nopoll, 355 /* mmap */ nommap, 356 /* strategy */ sastrategy, 357 /* name */ "sa", 358 /* maj */ SA_CDEV_MAJOR, 359 /* dump */ nodump, 360 /* psize */ nopsize, 361 /* flags */ D_TAPE, 362 /* bmaj */ -1 363 }; 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 scsi_space_code spaceop; 705 int didlockperiph = 0; 706 int s; 707 int unit; 708 int mode; 709 int density; 710 int error; 711 712 unit = SAUNIT(dev); 713 mode = SAMODE(dev); 714 density = SADENSITY(dev); 715 error = 0; /* shut up gcc */ 716 spaceop = 0; /* shut up gcc */ 717 718 periph = cam_extend_get(saperiphs, unit); 719 if (periph == NULL) 720 return (ENXIO); 721 722 softc = (struct sa_softc *)periph->softc; 723 724 /* 725 * Check for control mode accesses. We allow MTIOCGET and 726 * MTIOCERRSTAT (but need to be the only one open in order 727 * to clear latched status), and MTSETBSIZE, MTSETDNSTY 728 * and MTCOMP (but need to be the only one accessing this 729 * device to run those). 730 */ 731 732 if (SA_IS_CTRL(dev)) { 733 switch (cmd) { 734 case MTIOCGETEOTMODEL: 735 case MTIOCGET: 736 break; 737 case MTIOCERRSTAT: 738 /* 739 * If the periph isn't already locked, lock it 740 * so our MTIOCERRSTAT can reset latched error stats. 741 * 742 * If the periph is already locked, skip it because 743 * we're just getting status and it'll be up to the 744 * other thread that has this device open to do 745 * an MTIOCERRSTAT that would clear latched status. 746 */ 747 s = splsoftcam(); 748 if ((periph->flags & CAM_PERIPH_LOCKED) == 0) { 749 error = cam_periph_lock(periph, PRIBIO|PCATCH); 750 if (error != 0) { 751 splx(s); 752 return (error); 753 } 754 didlockperiph = 1; 755 } 756 break; 757 758 case MTIOCSETEOTMODEL: 759 case MTSETBSIZ: 760 case MTSETDNSTY: 761 case MTCOMP: 762 /* 763 * We need to acquire the peripheral here rather 764 * than at open time because we are sharing writable 765 * access to data structures. 766 */ 767 s = splsoftcam(); 768 error = cam_periph_lock(periph, PRIBIO|PCATCH); 769 if (error != 0) { 770 splx(s); 771 return (error); 772 } 773 didlockperiph = 1; 774 break; 775 776 default: 777 return (EINVAL); 778 } 779 } 780 781 /* 782 * Find the device that the user is talking about 783 */ 784 switch (cmd) { 785 case MTIOCGET: 786 { 787 struct mtget *g = (struct mtget *)arg; 788 789 bzero(g, sizeof(struct mtget)); 790 g->mt_type = MT_ISAR; 791 if (softc->flags & SA_FLAG_COMP_UNSUPP) { 792 g->mt_comp = MT_COMP_UNSUPP; 793 g->mt_comp0 = MT_COMP_UNSUPP; 794 g->mt_comp1 = MT_COMP_UNSUPP; 795 g->mt_comp2 = MT_COMP_UNSUPP; 796 g->mt_comp3 = MT_COMP_UNSUPP; 797 } else { 798 if ((softc->flags & SA_FLAG_COMP_ENABLED) == 0) { 799 g->mt_comp = MT_COMP_DISABLED; 800 } else { 801 g->mt_comp = softc->comp_algorithm; 802 } 803 g->mt_comp0 = softc->comp_algorithm; 804 g->mt_comp1 = softc->comp_algorithm; 805 g->mt_comp2 = softc->comp_algorithm; 806 g->mt_comp3 = softc->comp_algorithm; 807 } 808 g->mt_density = softc->media_density; 809 g->mt_density0 = softc->media_density; 810 g->mt_density1 = softc->media_density; 811 g->mt_density2 = softc->media_density; 812 g->mt_density3 = softc->media_density; 813 g->mt_blksiz = softc->media_blksize; 814 g->mt_blksiz0 = softc->media_blksize; 815 g->mt_blksiz1 = softc->media_blksize; 816 g->mt_blksiz2 = softc->media_blksize; 817 g->mt_blksiz3 = softc->media_blksize; 818 g->mt_fileno = softc->fileno; 819 g->mt_blkno = softc->blkno; 820 g->mt_dsreg = (short) softc->dsreg; 821 error = 0; 822 break; 823 } 824 case MTIOCERRSTAT: 825 { 826 struct scsi_tape_errors *sep = 827 &((union mterrstat *)arg)->scsi_errstat; 828 829 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, 830 ("saioctl: MTIOCERRSTAT\n")); 831 832 bzero(sep, sizeof(*sep)); 833 sep->io_resid = softc->last_io_resid; 834 bcopy((caddr_t) &softc->last_io_sense, sep->io_sense, 835 sizeof (sep->io_sense)); 836 bcopy((caddr_t) &softc->last_io_cdb, sep->io_cdb, 837 sizeof (sep->io_cdb)); 838 sep->ctl_resid = softc->last_ctl_resid; 839 bcopy((caddr_t) &softc->last_ctl_sense, sep->ctl_sense, 840 sizeof (sep->ctl_sense)); 841 bcopy((caddr_t) &softc->last_ctl_cdb, sep->ctl_cdb, 842 sizeof (sep->ctl_cdb)); 843 844 if (SA_IS_CTRL(dev) == 0 || didlockperiph) 845 bzero((caddr_t) &softc->errinfo, 846 sizeof (softc->errinfo)); 847 error = 0; 848 break; 849 } 850 case MTIOCTOP: 851 { 852 struct mtop *mt; 853 int count; 854 855 mt = (struct mtop *)arg; 856 857 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, 858 ("saioctl: op=0x%x count=0x%x\n", 859 mt->mt_op, mt->mt_count)); 860 861 count = mt->mt_count; 862 switch (mt->mt_op) { 863 case MTWEOF: /* write an end-of-file marker */ 864 /* XXXX: NEED TO CLEAR SA_TAPE_WRITTEN */ 865 error = sawritefilemarks(periph, count, FALSE); 866 break; 867 case MTWSS: /* write a setmark */ 868 error = sawritefilemarks(periph, count, TRUE); 869 break; 870 case MTBSR: /* backward space record */ 871 case MTFSR: /* forward space record */ 872 case MTBSF: /* backward space file */ 873 case MTFSF: /* forward space file */ 874 case MTBSS: /* backward space setmark */ 875 case MTFSS: /* forward space setmark */ 876 case MTEOD: /* space to end of recorded medium */ 877 { 878 int nmarks; 879 880 spaceop = SS_FILEMARKS; 881 nmarks = softc->filemarks; 882 error = sacheckeod(periph); 883 if (error) { 884 xpt_print_path(periph->path); 885 printf("EOD check prior to spacing failed\n"); 886 softc->flags |= SA_FLAG_EIO_PENDING; 887 break; 888 } 889 nmarks -= softc->filemarks; 890 switch(mt->mt_op) { 891 case MTBSR: 892 count = -count; 893 /* FALLTHROUGH */ 894 case MTFSR: 895 spaceop = SS_BLOCKS; 896 break; 897 case MTBSF: 898 count = -count; 899 /* FALLTHROUGH */ 900 case MTFSF: 901 break; 902 case MTBSS: 903 count = -count; 904 /* FALLTHROUGH */ 905 case MTFSS: 906 spaceop = SS_SETMARKS; 907 break; 908 case MTEOD: 909 spaceop = SS_EOD; 910 count = 0; 911 nmarks = 0; 912 break; 913 default: 914 error = EINVAL; 915 break; 916 } 917 if (error) 918 break; 919 920 nmarks = softc->filemarks; 921 /* 922 * XXX: Why are we checking again? 923 */ 924 error = sacheckeod(periph); 925 if (error) 926 break; 927 nmarks -= softc->filemarks; 928 error = saspace(periph, count - nmarks, spaceop); 929 /* 930 * At this point, clear that we've written the tape 931 * and that we've written any filemarks. We really 932 * don't know what the applications wishes to do next- 933 * the sacheckeod's will make sure we terminated the 934 * tape correctly if we'd been writing, but the next 935 * action the user application takes will set again 936 * whether we need to write filemarks. 937 */ 938 softc->flags &= 939 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 940 softc->filemarks = 0; 941 break; 942 } 943 case MTREW: /* rewind */ 944 (void) sacheckeod(periph); 945 error = sarewind(periph); 946 /* see above */ 947 softc->flags &= 948 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 949 softc->filemarks = 0; 950 break; 951 case MTERASE: /* erase */ 952 error = saerase(periph, count); 953 softc->flags &= 954 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 955 break; 956 case MTRETENS: /* re-tension tape */ 957 error = saretension(periph); 958 softc->flags &= 959 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 960 break; 961 case MTOFFL: /* rewind and put the drive offline */ 962 963 (void) sacheckeod(periph); 964 /* see above */ 965 softc->flags &= ~SA_FLAG_TAPE_WRITTEN; 966 softc->filemarks = 0; 967 968 error = sarewind(periph); 969 970 /* 971 * Be sure to allow media removal before 972 * attempting the eject. 973 */ 974 975 saprevent(periph, PR_ALLOW); 976 if (error == 0) 977 error = saloadunload(periph, FALSE); 978 else 979 break; 980 softc->flags &= ~(SA_FLAG_TAPE_LOCKED| 981 SA_FLAG_TAPE_WRITTEN| SA_FLAG_TAPE_WRITTEN| 982 SA_FLAG_TAPE_FROZEN); 983 break; 984 985 case MTNOP: /* no operation, sets status only */ 986 case MTCACHE: /* enable controller cache */ 987 case MTNOCACHE: /* disable controller cache */ 988 error = 0; 989 break; 990 991 case MTSETBSIZ: /* Set block size for device */ 992 993 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, count, 994 0, 0, 0); 995 if (error == 0) { 996 softc->last_media_blksize = 997 softc->media_blksize; 998 softc->media_blksize = count; 999 if (count) { 1000 softc->flags |= SA_FLAG_FIXED; 1001 if (powerof2(count)) { 1002 softc->blk_shift = 1003 ffs(count) - 1; 1004 softc->blk_mask = count - 1; 1005 } else { 1006 softc->blk_mask = ~0; 1007 softc->blk_shift = 0; 1008 } 1009 /* 1010 * Make the user's desire 'persistent'. 1011 */ 1012 softc->quirks &= ~SA_QUIRK_VARIABLE; 1013 softc->quirks |= SA_QUIRK_FIXED; 1014 } else { 1015 softc->flags &= ~SA_FLAG_FIXED; 1016 if (softc->max_blk == 0) { 1017 softc->max_blk = ~0; 1018 } 1019 softc->blk_shift = 0; 1020 if (softc->blk_gran != 0) { 1021 softc->blk_mask = 1022 softc->blk_gran - 1; 1023 } else { 1024 softc->blk_mask = 0; 1025 } 1026 /* 1027 * Make the user's desire 'persistent'. 1028 */ 1029 softc->quirks |= SA_QUIRK_VARIABLE; 1030 softc->quirks &= ~SA_QUIRK_FIXED; 1031 } 1032 } 1033 break; 1034 case MTSETDNSTY: /* Set density for device and mode */ 1035 if (count > UCHAR_MAX) { 1036 error = EINVAL; 1037 break; 1038 } else { 1039 error = sasetparams(periph, SA_PARAM_DENSITY, 1040 0, count, 0, 0); 1041 } 1042 break; 1043 case MTCOMP: /* enable compression */ 1044 /* 1045 * Some devices don't support compression, and 1046 * don't like it if you ask them for the 1047 * compression page. 1048 */ 1049 if ((softc->quirks & SA_QUIRK_NOCOMP) || 1050 (softc->flags & SA_FLAG_COMP_UNSUPP)) { 1051 error = ENODEV; 1052 break; 1053 } 1054 error = sasetparams(periph, SA_PARAM_COMPRESSION, 1055 0, 0, count, 0); 1056 break; 1057 default: 1058 error = EINVAL; 1059 } 1060 break; 1061 } 1062 case MTIOCIEOT: 1063 case MTIOCEEOT: 1064 error = 0; 1065 break; 1066 case MTIOCRDSPOS: 1067 error = sardpos(periph, 0, (u_int32_t *) arg); 1068 break; 1069 case MTIOCRDHPOS: 1070 error = sardpos(periph, 1, (u_int32_t *) arg); 1071 break; 1072 case MTIOCSLOCATE: 1073 error = sasetpos(periph, 0, (u_int32_t *) arg); 1074 break; 1075 case MTIOCHLOCATE: 1076 error = sasetpos(periph, 1, (u_int32_t *) arg); 1077 break; 1078 case MTIOCGETEOTMODEL: 1079 error = 0; 1080 if (softc->quirks & SA_QUIRK_1FM) 1081 mode = 1; 1082 else 1083 mode = 2; 1084 *((u_int32_t *) arg) = mode; 1085 break; 1086 case MTIOCSETEOTMODEL: 1087 error = 0; 1088 switch (*((u_int32_t *) arg)) { 1089 case 1: 1090 softc->quirks &= ~SA_QUIRK_2FM; 1091 softc->quirks |= SA_QUIRK_1FM; 1092 break; 1093 case 2: 1094 softc->quirks &= ~SA_QUIRK_1FM; 1095 softc->quirks |= SA_QUIRK_2FM; 1096 break; 1097 default: 1098 error = EINVAL; 1099 break; 1100 } 1101 break; 1102 default: 1103 error = cam_periph_ioctl(periph, cmd, arg, saerror); 1104 break; 1105 } 1106 if (didlockperiph) { 1107 cam_periph_unlock(periph); 1108 } 1109 return (error); 1110 } 1111 1112 static void 1113 sainit(void) 1114 { 1115 cam_status status; 1116 struct cam_path *path; 1117 1118 /* 1119 * Create our extend array for storing the devices we attach to. 1120 */ 1121 saperiphs = cam_extend_new(); 1122 if (saperiphs == NULL) { 1123 printf("sa: Failed to alloc extend array!\n"); 1124 return; 1125 } 1126 1127 /* 1128 * Install a global async callback. 1129 */ 1130 status = xpt_create_path(&path, NULL, CAM_XPT_PATH_ID, 1131 CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD); 1132 1133 if (status == CAM_REQ_CMP) { 1134 /* Register the async callbacks of interrest */ 1135 struct ccb_setasync csa; /* 1136 * This is an immediate CCB, 1137 * so using the stack is OK 1138 */ 1139 xpt_setup_ccb(&csa.ccb_h, path, 5); 1140 csa.ccb_h.func_code = XPT_SASYNC_CB; 1141 csa.event_enable = AC_FOUND_DEVICE; 1142 csa.callback = saasync; 1143 csa.callback_arg = NULL; 1144 xpt_action((union ccb *)&csa); 1145 status = csa.ccb_h.status; 1146 xpt_free_path(path); 1147 } 1148 1149 if (status != CAM_REQ_CMP) { 1150 printf("sa: Failed to attach master async callback " 1151 "due to status 0x%x!\n", status); 1152 } else { 1153 /* If we were successfull, register our devsw */ 1154 cdevsw_add(&sa_cdevsw); 1155 } 1156 } 1157 1158 static void 1159 saoninvalidate(struct cam_periph *periph) 1160 { 1161 struct sa_softc *softc; 1162 struct buf *q_bp; 1163 struct ccb_setasync csa; 1164 int s; 1165 1166 softc = (struct sa_softc *)periph->softc; 1167 1168 /* 1169 * De-register any async callbacks. 1170 */ 1171 xpt_setup_ccb(&csa.ccb_h, periph->path, 1172 /* priority */ 5); 1173 csa.ccb_h.func_code = XPT_SASYNC_CB; 1174 csa.event_enable = 0; 1175 csa.callback = saasync; 1176 csa.callback_arg = periph; 1177 xpt_action((union ccb *)&csa); 1178 1179 softc->flags |= SA_FLAG_INVALID; 1180 1181 /* 1182 * Although the oninvalidate() routines are always called at 1183 * splsoftcam, we need to be at splbio() here to keep the buffer 1184 * queue from being modified while we traverse it. 1185 */ 1186 s = splbio(); 1187 1188 /* 1189 * Return all queued I/O with ENXIO. 1190 * XXX Handle any transactions queued to the card 1191 * with XPT_ABORT_CCB. 1192 */ 1193 while ((q_bp = bufq_first(&softc->buf_queue)) != NULL){ 1194 bufq_remove(&softc->buf_queue, q_bp); 1195 q_bp->b_resid = q_bp->b_bcount; 1196 q_bp->b_error = ENXIO; 1197 q_bp->b_flags |= B_ERROR; 1198 biodone(q_bp); 1199 } 1200 softc->queue_count = 0; 1201 splx(s); 1202 1203 xpt_print_path(periph->path); 1204 printf("lost device\n"); 1205 1206 } 1207 1208 static void 1209 sacleanup(struct cam_periph *periph) 1210 { 1211 struct sa_softc *softc; 1212 1213 softc = (struct sa_softc *)periph->softc; 1214 1215 devstat_remove_entry(&softc->device_stats); 1216 cam_extend_release(saperiphs, periph->unit_number); 1217 xpt_print_path(periph->path); 1218 printf("removing device entry\n"); 1219 free(softc, M_DEVBUF); 1220 } 1221 1222 static void 1223 saasync(void *callback_arg, u_int32_t code, 1224 struct cam_path *path, void *arg) 1225 { 1226 struct cam_periph *periph; 1227 1228 periph = (struct cam_periph *)callback_arg; 1229 switch (code) { 1230 case AC_FOUND_DEVICE: 1231 { 1232 struct ccb_getdev *cgd; 1233 cam_status status; 1234 1235 cgd = (struct ccb_getdev *)arg; 1236 1237 if (cgd->pd_type != T_SEQUENTIAL) 1238 break; 1239 1240 /* 1241 * Allocate a peripheral instance for 1242 * this device and start the probe 1243 * process. 1244 */ 1245 status = cam_periph_alloc(saregister, saoninvalidate, 1246 sacleanup, sastart, 1247 "sa", CAM_PERIPH_BIO, cgd->ccb_h.path, 1248 saasync, AC_FOUND_DEVICE, cgd); 1249 1250 if (status != CAM_REQ_CMP 1251 && status != CAM_REQ_INPROG) 1252 printf("saasync: Unable to probe new device " 1253 "due to status 0x%x\n", status); 1254 break; 1255 } 1256 default: 1257 cam_periph_async(periph, code, path, arg); 1258 break; 1259 } 1260 } 1261 1262 static cam_status 1263 saregister(struct cam_periph *periph, void *arg) 1264 { 1265 struct sa_softc *softc; 1266 struct ccb_setasync csa; 1267 struct ccb_getdev *cgd; 1268 caddr_t match; 1269 1270 cgd = (struct ccb_getdev *)arg; 1271 if (periph == NULL) { 1272 printf("saregister: periph was NULL!!\n"); 1273 return(CAM_REQ_CMP_ERR); 1274 } 1275 1276 if (cgd == NULL) { 1277 printf("saregister: no getdev CCB, can't register device\n"); 1278 return(CAM_REQ_CMP_ERR); 1279 } 1280 1281 softc = (struct sa_softc *)malloc(sizeof(*softc),M_DEVBUF,M_NOWAIT); 1282 1283 if (softc == NULL) { 1284 printf("saregister: Unable to probe new device. " 1285 "Unable to allocate softc\n"); 1286 return(CAM_REQ_CMP_ERR); 1287 } 1288 1289 bzero(softc, sizeof(*softc)); 1290 softc->scsi_rev = SID_ANSI_REV(&cgd->inq_data); 1291 softc->state = SA_STATE_NORMAL; 1292 softc->fileno = (daddr_t) -1; 1293 softc->blkno = (daddr_t) -1; 1294 1295 bufq_init(&softc->buf_queue); 1296 periph->softc = softc; 1297 cam_extend_set(saperiphs, periph->unit_number, periph); 1298 1299 /* 1300 * See if this device has any quirks. 1301 */ 1302 match = cam_quirkmatch((caddr_t)&cgd->inq_data, 1303 (caddr_t)sa_quirk_table, 1304 sizeof(sa_quirk_table)/sizeof(*sa_quirk_table), 1305 sizeof(*sa_quirk_table), scsi_inquiry_match); 1306 1307 if (match != NULL) { 1308 softc->quirks = ((struct sa_quirk_entry *)match)->quirks; 1309 softc->last_media_blksize = 1310 ((struct sa_quirk_entry *)match)->prefblk; 1311 #ifdef CAMDEBUG 1312 xpt_print_path(periph->path); 1313 printf("found quirk entry %d\n", (int) 1314 (((struct sa_quirk_entry *) match) - sa_quirk_table)); 1315 #endif 1316 } else 1317 softc->quirks = SA_QUIRK_NONE; 1318 1319 /* 1320 * The SA driver supports a blocksize, but we don't know the 1321 * blocksize until we media is inserted. So, set a flag to 1322 * indicate that the blocksize is unavailable right now. 1323 */ 1324 devstat_add_entry(&softc->device_stats, "sa", 1325 periph->unit_number, 0, 1326 DEVSTAT_BS_UNAVAILABLE, 1327 cgd->pd_type | DEVSTAT_TYPE_IF_SCSI, 1328 DEVSTAT_PRIORITY_SA); 1329 1330 /* 1331 * Add an async callback so that we get 1332 * notified if this device goes away. 1333 */ 1334 xpt_setup_ccb(&csa.ccb_h, periph->path, /* priority */ 5); 1335 csa.ccb_h.func_code = XPT_SASYNC_CB; 1336 csa.event_enable = AC_LOST_DEVICE; 1337 csa.callback = saasync; 1338 csa.callback_arg = periph; 1339 xpt_action((union ccb *)&csa); 1340 1341 xpt_announce_periph(periph, NULL); 1342 1343 return(CAM_REQ_CMP); 1344 } 1345 1346 static void 1347 sastart(struct cam_periph *periph, union ccb *start_ccb) 1348 { 1349 struct sa_softc *softc; 1350 1351 softc = (struct sa_softc *)periph->softc; 1352 1353 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("sastart")); 1354 1355 switch (softc->state) { 1356 case SA_STATE_NORMAL: 1357 { 1358 /* Pull a buffer from the queue and get going on it */ 1359 struct buf *bp; 1360 int s; 1361 1362 /* 1363 * See if there is a buf with work for us to do.. 1364 */ 1365 s = splbio(); 1366 bp = bufq_first(&softc->buf_queue); 1367 if (periph->immediate_priority <= periph->pinfo.priority) { 1368 CAM_DEBUG_PRINT(CAM_DEBUG_SUBTRACE, 1369 ("queuing for immediate ccb\n")); 1370 start_ccb->ccb_h.ccb_type = SA_CCB_WAITING; 1371 SLIST_INSERT_HEAD(&periph->ccb_list, &start_ccb->ccb_h, 1372 periph_links.sle); 1373 periph->immediate_priority = CAM_PRIORITY_NONE; 1374 splx(s); 1375 wakeup(&periph->ccb_list); 1376 } else if (bp == NULL) { 1377 splx(s); 1378 xpt_release_ccb(start_ccb); 1379 } else if ((softc->flags & SA_FLAG_ERR_PENDING) != 0) { 1380 struct buf *done_bp; 1381 softc->queue_count--; 1382 bufq_remove(&softc->buf_queue, bp); 1383 bp->b_resid = bp->b_bcount; 1384 bp->b_flags |= B_ERROR; 1385 if ((softc->flags & SA_FLAG_EOM_PENDING) != 0) { 1386 if ((bp->b_flags & B_READ) == 0) 1387 bp->b_error = ENOSPC; 1388 else 1389 bp->b_error = EIO; 1390 } 1391 if ((softc->flags & SA_FLAG_EOF_PENDING) != 0) { 1392 bp->b_error = EIO; 1393 } 1394 if ((softc->flags & SA_FLAG_EIO_PENDING) != 0) { 1395 bp->b_error = EIO; 1396 } 1397 done_bp = bp; 1398 bp = bufq_first(&softc->buf_queue); 1399 /* 1400 * Only if we have no other buffers queued up 1401 * do we clear the pending error flag. 1402 */ 1403 if (bp == NULL) 1404 softc->flags &= ~SA_FLAG_ERR_PENDING; 1405 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 1406 ("sastart- ERR_PENDING now 0x%x, bp is %sNULL, " 1407 "%d more buffers queued up\n", 1408 (softc->flags & SA_FLAG_ERR_PENDING), 1409 (bp != NULL)? "not " : " ", softc->queue_count)); 1410 splx(s); 1411 xpt_release_ccb(start_ccb); 1412 biodone(done_bp); 1413 } else { 1414 u_int32_t length; 1415 1416 bufq_remove(&softc->buf_queue, bp); 1417 softc->queue_count--; 1418 1419 if ((softc->flags & SA_FLAG_FIXED) != 0) { 1420 if (softc->blk_shift != 0) { 1421 length = 1422 bp->b_bcount >> softc->blk_shift; 1423 } else if (softc->media_blksize != 0) { 1424 length = 1425 bp->b_bcount / softc->media_blksize; 1426 } else { 1427 bp->b_error = EIO; 1428 xpt_print_path(periph->path); 1429 printf("zero blocksize for " 1430 "FIXED length writes?\n"); 1431 splx(s); 1432 biodone(bp); 1433 break; 1434 } 1435 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 1436 ("Fixed Record Count is %d\n", length)); 1437 } else { 1438 length = bp->b_bcount; 1439 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_INFO, 1440 ("Variable Record Count is %d\n", length)); 1441 } 1442 devstat_start_transaction(&softc->device_stats); 1443 /* 1444 * Some people have theorized that we should 1445 * suppress illegal length indication if we are 1446 * running in variable block mode so that we don't 1447 * have to request sense every time our requested 1448 * block size is larger than the written block. 1449 * The residual information from the ccb allows 1450 * us to identify this situation anyway. The only 1451 * problem with this is that we will not get 1452 * information about blocks that are larger than 1453 * our read buffer unless we set the block size 1454 * in the mode page to something other than 0. 1455 * 1456 * I believe that this is a non-issue. If user apps 1457 * don't adjust their read size to match our record 1458 * size, that's just life. Anyway, the typical usage 1459 * would be to issue, e.g., 64KB reads and occasionally 1460 * have to do deal with 512 byte or 1KB intermediate 1461 * records. 1462 */ 1463 softc->dsreg = (bp->b_flags & B_READ)? 1464 MTIO_DSREG_RD : MTIO_DSREG_WR; 1465 scsi_sa_read_write(&start_ccb->csio, 0, sadone, 1466 MSG_SIMPLE_Q_TAG, (bp->b_flags & B_READ) != 0, 1467 FALSE, (softc->flags & SA_FLAG_FIXED) != 0, 1468 length, bp->b_data, bp->b_bcount, SSD_FULL_SIZE, 1469 120 * 60 * 1000); 1470 start_ccb->ccb_h.ccb_type = SA_CCB_BUFFER_IO; 1471 start_ccb->ccb_h.ccb_bp = bp; 1472 bp = bufq_first(&softc->buf_queue); 1473 splx(s); 1474 xpt_action(start_ccb); 1475 } 1476 1477 if (bp != NULL) { 1478 /* Have more work to do, so ensure we stay scheduled */ 1479 xpt_schedule(periph, 1); 1480 } 1481 break; 1482 } 1483 case SA_STATE_ABNORMAL: 1484 default: 1485 panic("state 0x%x in sastart", softc->state); 1486 break; 1487 } 1488 } 1489 1490 1491 static void 1492 sadone(struct cam_periph *periph, union ccb *done_ccb) 1493 { 1494 struct sa_softc *softc; 1495 struct ccb_scsiio *csio; 1496 1497 softc = (struct sa_softc *)periph->softc; 1498 csio = &done_ccb->csio; 1499 switch (csio->ccb_h.ccb_type) { 1500 case SA_CCB_BUFFER_IO: 1501 { 1502 struct buf *bp; 1503 int error; 1504 1505 softc->dsreg = MTIO_DSREG_REST; 1506 bp = (struct buf *)done_ccb->ccb_h.ccb_bp; 1507 error = 0; 1508 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 1509 if ((error = saerror(done_ccb, 0, 0)) == ERESTART) { 1510 /* 1511 * A retry was scheduled, so just return. 1512 */ 1513 return; 1514 } 1515 } 1516 1517 if (error == EIO) { 1518 int s; 1519 struct buf *q_bp; 1520 1521 /* 1522 * Catastrophic error. Mark the tape as not mounted. 1523 * Return all queued I/O with EIO, and unfreeze 1524 * our queue so that future transactions that 1525 * attempt to fix this problem can get to the 1526 * device. 1527 * 1528 */ 1529 1530 s = splbio(); 1531 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 1532 while ((q_bp = bufq_first(&softc->buf_queue)) != NULL) { 1533 bufq_remove(&softc->buf_queue, q_bp); 1534 q_bp->b_resid = q_bp->b_bcount; 1535 q_bp->b_error = EIO; 1536 q_bp->b_flags |= B_ERROR; 1537 biodone(q_bp); 1538 } 1539 splx(s); 1540 } 1541 if (error != 0) { 1542 bp->b_resid = bp->b_bcount; 1543 bp->b_error = error; 1544 bp->b_flags |= B_ERROR; 1545 /* 1546 * In the error case, position is updated in saerror. 1547 */ 1548 } else { 1549 bp->b_resid = csio->resid; 1550 bp->b_error = 0; 1551 if (csio->resid != 0) { 1552 bp->b_flags |= B_ERROR; 1553 } 1554 if ((bp->b_flags & B_READ) == 0) { 1555 softc->flags |= SA_FLAG_TAPE_WRITTEN; 1556 softc->filemarks = 0; 1557 } 1558 if (softc->blkno != (daddr_t) -1) { 1559 if ((softc->flags & SA_FLAG_FIXED) != 0) { 1560 u_int32_t l; 1561 if (softc->blk_shift != 0) { 1562 l = bp->b_bcount >> 1563 softc->blk_shift; 1564 } else { 1565 l = bp->b_bcount / 1566 softc->media_blksize; 1567 } 1568 softc->blkno += (daddr_t) l; 1569 } else { 1570 softc->blkno++; 1571 } 1572 } 1573 } 1574 /* 1575 * If we had an error (immediate or pending), 1576 * release the device queue now. 1577 */ 1578 if (error || (softc->flags & SA_FLAG_ERR_PENDING)) 1579 cam_release_devq(done_ccb->ccb_h.path, 0, 0, 0, 0); 1580 #ifdef CAMDEBUG 1581 if (error || bp->b_resid) { 1582 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 1583 ("error %d resid %ld count %ld\n", error, 1584 bp->b_resid, bp->b_bcount)); 1585 } 1586 #endif 1587 devstat_end_transaction_buf(&softc->device_stats, bp); 1588 biodone(bp); 1589 break; 1590 } 1591 case SA_CCB_WAITING: 1592 { 1593 /* Caller will release the CCB */ 1594 wakeup(&done_ccb->ccb_h.cbfcnp); 1595 return; 1596 } 1597 } 1598 xpt_release_ccb(done_ccb); 1599 } 1600 1601 /* 1602 * Mount the tape (make sure it's ready for I/O). 1603 */ 1604 static int 1605 samount(struct cam_periph *periph, int oflags, dev_t dev) 1606 { 1607 struct sa_softc *softc; 1608 union ccb *ccb; 1609 struct ccb_scsiio *csio; 1610 int error; 1611 1612 /* 1613 * oflags can be checked for 'kind' of open (read-only check) - later 1614 * dev can be checked for a control-mode or compression open - later 1615 */ 1616 UNUSED_PARAMETER(oflags); 1617 UNUSED_PARAMETER(dev); 1618 1619 1620 softc = (struct sa_softc *)periph->softc; 1621 ccb = cam_periph_getccb(periph, 1); 1622 csio = &ccb->csio; 1623 error = 0; 1624 1625 /* 1626 * This *should* determine if something has happend since the last 1627 * open/mount that would invalidate the mount, but is currently 1628 * broken. 1629 * 1630 * This will also eat any pending UAs. 1631 */ 1632 scsi_test_unit_ready(csio, 1, sadone, 1633 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, 5 * 60 * 1000); 1634 1635 /* 1636 * Because we're not supplying a error routine, cam_periph_runccb 1637 * will unfreeze the queue if there was an error. 1638 */ 1639 cam_periph_runccb(ccb, NULL, 0, 0, &softc->device_stats); 1640 1641 1642 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) { 1643 struct scsi_read_block_limits_data *rblim = NULL; 1644 int comp_enabled, comp_supported; 1645 u_int8_t write_protect, guessing = 0; 1646 1647 /* 1648 * Clear out old state. 1649 */ 1650 softc->flags &= ~(SA_FLAG_TAPE_WP|SA_FLAG_TAPE_WRITTEN| 1651 SA_FLAG_ERR_PENDING|SA_FLAG_COMP_ENABLED| 1652 SA_FLAG_COMP_SUPP|SA_FLAG_COMP_UNSUPP); 1653 softc->filemarks = 0; 1654 1655 /* 1656 * *Very* first off, make sure we're loaded to BOT. 1657 */ 1658 scsi_load_unload(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 1659 FALSE, FALSE, 1, SSD_FULL_SIZE, 60000); 1660 error = cam_periph_runccb(ccb, saerror, 0, SF_QUIET_IR, 1661 &softc->device_stats); 1662 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 1663 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 1664 /* 1665 * In case this doesn't work, do a REWIND instead 1666 */ 1667 if (error) { 1668 scsi_rewind(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, 1669 FALSE, SSD_FULL_SIZE, 1670 (SA_REWIND_TIMEOUT) * 60 * 1000); 1671 error = cam_periph_runccb(ccb, saerror, 0, 0, 1672 &softc->device_stats); 1673 } 1674 if (error) { 1675 xpt_release_ccb(ccb); 1676 goto exit; 1677 } 1678 1679 /* 1680 * Next off, determine block limits. 1681 */ 1682 rblim = (struct scsi_read_block_limits_data *) 1683 malloc(sizeof(*rblim), M_TEMP, M_WAITOK); 1684 1685 /* it is safe to retry this */ 1686 scsi_read_block_limits(csio, 5, sadone, MSG_SIMPLE_Q_TAG, 1687 rblim, SSD_FULL_SIZE, 5000); 1688 1689 error = cam_periph_runccb(ccb, saerror, 0, 1690 SF_RETRY_UA | SF_RETRY_SELTO, &softc->device_stats); 1691 1692 xpt_release_ccb(ccb); 1693 1694 if (error != 0) { 1695 /* 1696 * If it's less than SCSI-2, READ BLOCK LIMITS is not 1697 * a MANDATORY command. Anyway- it doesn't matter- 1698 * we can proceed anyway. 1699 */ 1700 softc->blk_gran = 0; 1701 softc->max_blk = ~0; 1702 softc->min_blk = 0; 1703 } else { 1704 if (softc->scsi_rev >= SCSI_REV_3) { 1705 softc->blk_gran = RBL_GRAN(rblim); 1706 } else { 1707 softc->blk_gran = 0; 1708 } 1709 /* 1710 * We take max_blk == min_blk to mean a default to 1711 * fixed mode- but note that whatever we get out of 1712 * sagetparams below will actually determine whether 1713 * we are actually *in* fixed mode. 1714 */ 1715 softc->max_blk = scsi_3btoul(rblim->maximum); 1716 softc->min_blk = scsi_2btoul(rblim->minimum); 1717 1718 1719 } 1720 /* 1721 * Next, perform a mode sense to determine 1722 * current density, blocksize, compression etc. 1723 */ 1724 error = sagetparams(periph, SA_PARAM_ALL, 1725 &softc->media_blksize, 1726 &softc->media_density, 1727 &softc->media_numblks, 1728 &softc->buffer_mode, &write_protect, 1729 &softc->speed, &comp_supported, 1730 &comp_enabled, &softc->comp_algorithm, 1731 NULL); 1732 1733 if (error != 0) { 1734 /* 1735 * We could work a little harder here. We could 1736 * adjust our attempts to get information. It 1737 * might be an ancient tape drive. If someone 1738 * nudges us, we'll do that. 1739 */ 1740 goto exit; 1741 } 1742 1743 /* 1744 * If no quirk has determined that this is a device that is 1745 * preferred to be in fixed or variable mode, now is the time 1746 * to find out. 1747 */ 1748 if ((softc->quirks & (SA_QUIRK_FIXED|SA_QUIRK_VARIABLE)) == 0) { 1749 guessing = 1; 1750 /* 1751 * This could be expensive to find out. Luckily we 1752 * only need to do this once. If we start out in 1753 * 'default' mode, try and set ourselves to one 1754 * of the densities that would determine a wad 1755 * of other stuff. Go from highest to lowest. 1756 */ 1757 if (softc->media_density == SCSI_DEFAULT_DENSITY) { 1758 int i; 1759 static u_int8_t ctry[] = { 1760 SCSI_DENSITY_HALFINCH_PE, 1761 SCSI_DENSITY_HALFINCH_6250C, 1762 SCSI_DENSITY_HALFINCH_6250, 1763 SCSI_DENSITY_HALFINCH_1600, 1764 SCSI_DENSITY_HALFINCH_800, 1765 SCSI_DENSITY_QIC_4GB, 1766 SCSI_DENSITY_QIC_2GB, 1767 SCSI_DENSITY_QIC_525_320, 1768 SCSI_DENSITY_QIC_150, 1769 SCSI_DENSITY_QIC_120, 1770 SCSI_DENSITY_QIC_24, 1771 SCSI_DENSITY_QIC_11_9TRK, 1772 SCSI_DENSITY_QIC_11_4TRK, 1773 SCSI_DENSITY_QIC_1320, 1774 SCSI_DENSITY_QIC_3080, 1775 0 1776 }; 1777 for (i = 0; ctry[i]; i++) { 1778 error = sasetparams(periph, 1779 SA_PARAM_DENSITY, 0, ctry[i], 1780 0, SF_NO_PRINT); 1781 if (error == 0) { 1782 softc->media_density = ctry[i]; 1783 break; 1784 } 1785 } 1786 } 1787 switch (softc->media_density) { 1788 case SCSI_DENSITY_QIC_11_4TRK: 1789 case SCSI_DENSITY_QIC_11_9TRK: 1790 case SCSI_DENSITY_QIC_24: 1791 case SCSI_DENSITY_QIC_120: 1792 case SCSI_DENSITY_QIC_150: 1793 case SCSI_DENSITY_QIC_1320: 1794 case SCSI_DENSITY_QIC_3080: 1795 softc->quirks &= ~SA_QUIRK_2FM; 1796 softc->quirks |= SA_QUIRK_FIXED|SA_QUIRK_1FM; 1797 softc->last_media_blksize = 512; 1798 break; 1799 case SCSI_DENSITY_QIC_4GB: 1800 case SCSI_DENSITY_QIC_2GB: 1801 case SCSI_DENSITY_QIC_525_320: 1802 softc->quirks &= ~SA_QUIRK_2FM; 1803 softc->quirks |= SA_QUIRK_FIXED|SA_QUIRK_1FM; 1804 softc->last_media_blksize = 1024; 1805 break; 1806 default: 1807 softc->last_media_blksize = 1808 softc->media_blksize; 1809 softc->quirks |= SA_QUIRK_VARIABLE; 1810 break; 1811 } 1812 } 1813 1814 /* 1815 * If no quirk has determined that this is a device that needs 1816 * to have 2 Filemarks at EOD, now is the time to find out. 1817 */ 1818 1819 if ((softc->quirks & SA_QUIRK_2FM) == 0) { 1820 switch (softc->media_density) { 1821 case SCSI_DENSITY_HALFINCH_800: 1822 case SCSI_DENSITY_HALFINCH_1600: 1823 case SCSI_DENSITY_HALFINCH_6250: 1824 case SCSI_DENSITY_HALFINCH_6250C: 1825 case SCSI_DENSITY_HALFINCH_PE: 1826 softc->quirks &= ~SA_QUIRK_1FM; 1827 softc->quirks |= SA_QUIRK_2FM; 1828 break; 1829 default: 1830 break; 1831 } 1832 } 1833 1834 /* 1835 * Now validate that some info we got makes sense. 1836 */ 1837 if ((softc->max_blk < softc->media_blksize) || 1838 (softc->min_blk > softc->media_blksize && 1839 softc->media_blksize)) { 1840 xpt_print_path(ccb->ccb_h.path); 1841 printf("BLOCK LIMITS (%d..%d) could not match current " 1842 "block settings (%d)- adjusting\n", softc->min_blk, 1843 softc->max_blk, softc->media_blksize); 1844 softc->max_blk = softc->min_blk = 1845 softc->media_blksize; 1846 } 1847 1848 /* 1849 * Now put ourselves into the right frame of mind based 1850 * upon quirks... 1851 */ 1852 tryagain: 1853 /* 1854 * If we want to be in FIXED mode and our current blocksize 1855 * is not equal to our last blocksize (if nonzero), try and 1856 * set ourselves to this last blocksize (as the 'preferred' 1857 * block size). The initial quirkmatch at registry sets the 1858 * initial 'last' blocksize. If, for whatever reason, this 1859 * 'last' blocksize is zero, set the blocksize to 512, 1860 * or min_blk if that's larger. 1861 */ 1862 if ((softc->quirks & SA_QUIRK_FIXED) && 1863 (softc->media_blksize != softc->last_media_blksize)) { 1864 softc->media_blksize = softc->last_media_blksize; 1865 if (softc->media_blksize == 0) { 1866 softc->media_blksize = 512; 1867 if (softc->media_blksize < softc->min_blk) { 1868 softc->media_blksize = softc->min_blk; 1869 } 1870 } 1871 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, 1872 softc->media_blksize, 0, 0, SF_NO_PRINT); 1873 if (error) { 1874 xpt_print_path(ccb->ccb_h.path); 1875 printf("unable to set fixed blocksize to %d\n", 1876 softc->media_blksize); 1877 goto exit; 1878 } 1879 } 1880 1881 if ((softc->quirks & SA_QUIRK_VARIABLE) && 1882 (softc->media_blksize != 0)) { 1883 softc->last_media_blksize = softc->media_blksize; 1884 softc->media_blksize = 0; 1885 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, 1886 0, 0, 0, SF_NO_PRINT); 1887 if (error) { 1888 /* 1889 * If this fails and we were guessing, just 1890 * assume that we got it wrong and go try 1891 * fixed block mode. Don't even check against 1892 * density code at this point. 1893 */ 1894 if (guessing) { 1895 softc->quirks &= ~SA_QUIRK_VARIABLE; 1896 softc->quirks |= SA_QUIRK_FIXED; 1897 if (softc->last_media_blksize == 0) 1898 softc->last_media_blksize = 512; 1899 goto tryagain; 1900 } 1901 xpt_print_path(ccb->ccb_h.path); 1902 printf("unable to set variable blocksize\n"); 1903 goto exit; 1904 } 1905 } 1906 1907 /* 1908 * Now that we have the current block size, 1909 * set up some parameters for sastart's usage. 1910 */ 1911 if (softc->media_blksize) { 1912 softc->flags |= SA_FLAG_FIXED; 1913 if (powerof2(softc->media_blksize)) { 1914 softc->blk_shift = 1915 ffs(softc->media_blksize) - 1; 1916 softc->blk_mask = softc->media_blksize - 1; 1917 } else { 1918 softc->blk_mask = ~0; 1919 softc->blk_shift = 0; 1920 } 1921 } else { 1922 /* 1923 * The SCSI-3 spec allows 0 to mean "unspecified". 1924 * The SCSI-1 spec allows 0 to mean 'infinite'. 1925 * 1926 * Either works here. 1927 */ 1928 if (softc->max_blk == 0) { 1929 softc->max_blk = ~0; 1930 } 1931 softc->blk_shift = 0; 1932 if (softc->blk_gran != 0) { 1933 softc->blk_mask = softc->blk_gran - 1; 1934 } else { 1935 softc->blk_mask = 0; 1936 } 1937 } 1938 1939 if (write_protect) 1940 softc->flags |= SA_FLAG_TAPE_WP; 1941 1942 if (comp_supported) { 1943 if (softc->saved_comp_algorithm == 0) 1944 softc->saved_comp_algorithm = 1945 softc->comp_algorithm; 1946 softc->flags |= SA_FLAG_COMP_SUPP; 1947 if (comp_enabled) 1948 softc->flags |= SA_FLAG_COMP_ENABLED; 1949 } else 1950 softc->flags |= SA_FLAG_COMP_UNSUPP; 1951 1952 if (softc->buffer_mode == SMH_SA_BUF_MODE_NOBUF) { 1953 error = sasetparams(periph, SA_PARAM_BUFF_MODE, 0, 1954 0, 0, SF_NO_PRINT); 1955 if (error == 0) 1956 softc->buffer_mode = SMH_SA_BUF_MODE_SIBUF; 1957 } 1958 1959 1960 if (error == 0) { 1961 softc->flags |= SA_FLAG_TAPE_MOUNTED; 1962 } 1963 exit: 1964 if (rblim != NULL) 1965 free(rblim, M_TEMP); 1966 1967 if (error != 0) { 1968 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, 0); 1969 softc->dsreg = MTIO_DSREG_NIL; 1970 } else { 1971 softc->fileno = softc->blkno = 0; 1972 softc->dsreg = MTIO_DSREG_REST; 1973 } 1974 #ifdef SA_1FM_AT_EOD 1975 if ((softc->quirks & SA_QUIRK_2FM) == 0) 1976 softc->quirks |= SA_QUIRK_1FM; 1977 #else 1978 if ((softc->quirks & SA_QUIRK_1FM) == 0) 1979 softc->quirks |= SA_QUIRK_2FM; 1980 #endif 1981 } else 1982 xpt_release_ccb(ccb); 1983 1984 return (error); 1985 } 1986 1987 static int 1988 sacheckeod(struct cam_periph *periph) 1989 { 1990 int error; 1991 int markswanted; 1992 struct sa_softc *softc; 1993 1994 softc = (struct sa_softc *)periph->softc; 1995 markswanted = 0; 1996 1997 if ((softc->flags & SA_FLAG_TAPE_WRITTEN) != 0) { 1998 markswanted++; 1999 if (softc->quirks & SA_QUIRK_2FM) 2000 markswanted++; 2001 } 2002 2003 if (softc->filemarks < markswanted) { 2004 markswanted -= softc->filemarks; 2005 error = sawritefilemarks(periph, markswanted, FALSE); 2006 } else { 2007 error = 0; 2008 } 2009 return (error); 2010 } 2011 2012 static int 2013 saerror(union ccb *ccb, u_int32_t cflgs, u_int32_t sflgs) 2014 { 2015 static const char *toobig = 2016 "%d-byte tape record bigger than suplied buffer\n"; 2017 struct cam_periph *periph; 2018 struct sa_softc *softc; 2019 struct ccb_scsiio *csio; 2020 struct scsi_sense_data *sense; 2021 u_int32_t resid; 2022 int32_t info; 2023 int error_code, sense_key, asc, ascq; 2024 int error, defer_action; 2025 2026 periph = xpt_path_periph(ccb->ccb_h.path); 2027 softc = (struct sa_softc *)periph->softc; 2028 csio = &ccb->csio; 2029 sense = &csio->sense_data; 2030 scsi_extract_sense(sense, &error_code, &sense_key, &asc, &ascq); 2031 error = 0; 2032 2033 /* 2034 * Calculate/latch up, any residuals... 2035 */ 2036 if ((csio->ccb_h.status & CAM_STATUS_MASK) == CAM_SCSI_STATUS_ERROR) { 2037 if ((sense->error_code & SSD_ERRCODE_VALID) != 0) { 2038 info = (int32_t) scsi_4btoul(sense->info); 2039 resid = info; 2040 if ((softc->flags & SA_FLAG_FIXED) != 0) 2041 resid *= softc->media_blksize; 2042 } else { 2043 resid = csio->dxfer_len; 2044 info = resid; 2045 if ((softc->flags & SA_FLAG_FIXED) != 0) { 2046 if (softc->media_blksize) 2047 info /= softc->media_blksize; 2048 } 2049 } 2050 if (csio->ccb_h.ccb_type == SA_CCB_BUFFER_IO) { 2051 bcopy((caddr_t) sense, (caddr_t) &softc->last_io_sense, 2052 sizeof (struct scsi_sense_data)); 2053 bcopy(csio->cdb_io.cdb_bytes, softc->last_io_cdb, 2054 (int) csio->cdb_len); 2055 softc->last_io_resid = resid; 2056 } else { 2057 bcopy((caddr_t) sense, (caddr_t) &softc->last_ctl_sense, 2058 sizeof (struct scsi_sense_data)); 2059 bcopy(csio->cdb_io.cdb_bytes, softc->last_ctl_cdb, 2060 (int) csio->cdb_len); 2061 softc->last_ctl_resid = resid; 2062 } 2063 } 2064 2065 /* 2066 * If it's neither a SCSI Check Condition Error nor a non-read/write 2067 * command, let the common code deal with it the error setting. 2068 */ 2069 if ((csio->ccb_h.status & CAM_STATUS_MASK) != CAM_SCSI_STATUS_ERROR || 2070 (csio->ccb_h.ccb_type == SA_CCB_WAITING)) { 2071 return (cam_periph_error(ccb, cflgs, sflgs, &softc->saved_ccb)); 2072 } 2073 2074 /* 2075 * Calculate whether we'll defer action. 2076 */ 2077 2078 if (resid > 0 && resid < csio->dxfer_len && 2079 (softc->flags & SA_FLAG_FIXED) != 0) { 2080 defer_action = TRUE; 2081 } else { 2082 defer_action = FALSE; 2083 } 2084 2085 /* 2086 * Handle filemark, end of tape, mismatched record sizes.... 2087 * From this point out, we're only handling read/write cases. 2088 * Handle writes && reads differently. 2089 */ 2090 2091 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("Key 0x%x ASC/ASCQ 0x%x " 2092 "0x%x flags 0x%x resid %d dxfer_len %d\n", sense_key, asc, ascq, 2093 sense->flags & ~SSD_KEY_RESERVED, resid, csio->dxfer_len)); 2094 2095 if (csio->cdb_io.cdb_bytes[0] == SA_WRITE) { 2096 if (sense->flags & SSD_FILEMARK) { 2097 xpt_print_path(csio->ccb_h.path); 2098 printf("filemark detected on write?\n"); 2099 if (softc->fileno != (daddr_t) -1) { 2100 softc->fileno++; 2101 softc->blkno = 0; 2102 } 2103 } 2104 if (sense->flags & SSD_EOM) { 2105 csio->resid = resid; 2106 if (defer_action) { 2107 error = -1; 2108 softc->flags |= SA_FLAG_EOM_PENDING; 2109 } else { 2110 error = ENOSPC; 2111 } 2112 } 2113 } else { 2114 if (sense_key == SSD_KEY_BLANK_CHECK) { 2115 csio->resid = resid; 2116 if (defer_action) { 2117 error = -1; 2118 softc->flags |= SA_FLAG_EOM_PENDING; 2119 } else { 2120 error = EIO; 2121 } 2122 } 2123 if (sense->flags & SSD_FILEMARK) { 2124 csio->resid = resid; 2125 if (defer_action) { 2126 error = -1; 2127 softc->flags |= SA_FLAG_EOF_PENDING; 2128 } 2129 /* 2130 * Unconditionally, if we detected a filemark on a read, 2131 * mark that we've run moved a file ahead. 2132 */ 2133 if (softc->fileno != (daddr_t) -1) { 2134 softc->fileno++; 2135 softc->blkno = 0; 2136 } 2137 } 2138 } 2139 /* 2140 * Incorrect Length usually applies to read, but can apply to writes. 2141 */ 2142 if (error == 0 && (sense->flags & SSD_ILI)) { 2143 if (info < 0) { 2144 xpt_print_path(csio->ccb_h.path); 2145 printf(toobig, csio->dxfer_len - info); 2146 csio->resid = csio->dxfer_len; 2147 error = EIO; 2148 } else { 2149 csio->resid = resid; 2150 if ((softc->flags & SA_FLAG_FIXED) != 0) { 2151 if (defer_action) 2152 softc->flags |= SA_FLAG_EIO_PENDING; 2153 else 2154 error = EIO; 2155 } 2156 /* 2157 * Bump the block number if we hadn't seen a filemark. 2158 * Do this independent of errors (we've moved anyway). 2159 */ 2160 if ((sense->flags & SSD_FILEMARK) == 0) { 2161 if (softc->blkno != (daddr_t) -1) { 2162 softc->blkno++; 2163 } 2164 } 2165 } 2166 } 2167 if (error == 0) 2168 return (cam_periph_error(ccb, cflgs, sflgs, &softc->saved_ccb)); 2169 2170 if (error == -1) 2171 return (0); 2172 else 2173 return (error); 2174 } 2175 2176 static int 2177 sagetparams(struct cam_periph *periph, sa_params params_to_get, 2178 u_int32_t *blocksize, u_int8_t *density, u_int32_t *numblocks, 2179 int *buff_mode, u_int8_t *write_protect, u_int8_t *speed, 2180 int *comp_supported, int *comp_enabled, u_int32_t *comp_algorithm, 2181 sa_comp_t *tcs) 2182 { 2183 sa_comp_t *ntcs; 2184 struct scsi_data_compression_page *comp_page; 2185 union ccb *ccb; 2186 void *mode_buffer; 2187 struct scsi_mode_header_6 *mode_hdr; 2188 struct scsi_mode_blk_desc *mode_blk; 2189 int mode_buffer_len; 2190 struct sa_softc *softc; 2191 u_int8_t cpage; 2192 int error; 2193 cam_status status; 2194 2195 if (tcs) 2196 comp_page = &tcs->dcomp; 2197 else 2198 comp_page = NULL; 2199 2200 softc = (struct sa_softc *)periph->softc; 2201 2202 ccb = cam_periph_getccb(periph, 1); 2203 cpage = SA_DATA_COMPRESSION_PAGE; 2204 2205 retry: 2206 mode_buffer_len = sizeof(*mode_hdr) + sizeof(*mode_blk); 2207 2208 if (params_to_get & SA_PARAM_COMPRESSION) { 2209 if (softc->quirks & SA_QUIRK_NOCOMP) { 2210 *comp_supported = FALSE; 2211 params_to_get &= ~SA_PARAM_COMPRESSION; 2212 } else 2213 mode_buffer_len += sizeof (sa_comp_t); 2214 } 2215 mode_buffer = malloc(mode_buffer_len, M_TEMP, M_WAITOK); 2216 2217 bzero(mode_buffer, mode_buffer_len); 2218 2219 mode_hdr = (struct scsi_mode_header_6 *)mode_buffer; 2220 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 2221 2222 if (params_to_get & SA_PARAM_COMPRESSION) 2223 ntcs = (sa_comp_t *) &mode_blk[1]; 2224 else 2225 ntcs = NULL; 2226 2227 /* it is safe to retry this */ 2228 scsi_mode_sense(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 2229 SMS_PAGE_CTRL_CURRENT, (params_to_get & SA_PARAM_COMPRESSION) ? 2230 cpage : SMS_VENDOR_SPECIFIC_PAGE, mode_buffer, mode_buffer_len, 2231 SSD_FULL_SIZE, 5000); 2232 2233 error = cam_periph_runccb(ccb, saerror, 0, 2234 SF_NO_PRINT, &softc->device_stats); 2235 2236 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 2237 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 2238 2239 status = ccb->ccb_h.status & CAM_STATUS_MASK; 2240 2241 if (error == EINVAL && (params_to_get & SA_PARAM_COMPRESSION) != 0) { 2242 /* 2243 * Hmm. Let's see if we can try another page... 2244 * If we've already done that, give up on compression 2245 * for this device and remember this for the future 2246 * and attempt the request without asking for compression 2247 * info. 2248 */ 2249 if (cpage == SA_DATA_COMPRESSION_PAGE) { 2250 cpage = SA_DEVICE_CONFIGURATION_PAGE; 2251 goto retry; 2252 } 2253 softc->quirks |= SA_QUIRK_NOCOMP; 2254 free(mode_buffer, M_TEMP); 2255 goto retry; 2256 } else if (status == CAM_SCSI_STATUS_ERROR) { 2257 /* Tell the user about the fatal error. */ 2258 scsi_sense_print(&ccb->csio); 2259 goto sagetparamsexit; 2260 } 2261 2262 /* 2263 * If the user only wants the compression information, and 2264 * the device doesn't send back the block descriptor, it's 2265 * no big deal. If the user wants more than just 2266 * compression, though, and the device doesn't pass back the 2267 * block descriptor, we need to send another mode sense to 2268 * get the block descriptor. 2269 */ 2270 if ((mode_hdr->blk_desc_len == 0) && 2271 (params_to_get & SA_PARAM_COMPRESSION) && 2272 (params_to_get & ~(SA_PARAM_COMPRESSION))) { 2273 2274 /* 2275 * Decrease the mode buffer length by the size of 2276 * the compression page, to make sure the data 2277 * there doesn't get overwritten. 2278 */ 2279 mode_buffer_len -= sizeof (sa_comp_t); 2280 2281 /* 2282 * Now move the compression page that we presumably 2283 * got back down the memory chunk a little bit so 2284 * it doesn't get spammed. 2285 */ 2286 bcopy(&mode_hdr[1], ntcs, sizeof (sa_comp_t)); 2287 2288 /* 2289 * Now, we issue another mode sense and just ask 2290 * for the block descriptor, etc. 2291 */ 2292 2293 scsi_mode_sense(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 2294 SMS_PAGE_CTRL_CURRENT, SMS_VENDOR_SPECIFIC_PAGE, 2295 mode_buffer, mode_buffer_len, SSD_FULL_SIZE, 5000); 2296 2297 error = cam_periph_runccb(ccb, saerror, 0, 0, 2298 &softc->device_stats); 2299 2300 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 2301 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 2302 2303 if (error != 0) 2304 goto sagetparamsexit; 2305 } 2306 2307 if (params_to_get & SA_PARAM_BLOCKSIZE) 2308 *blocksize = scsi_3btoul(mode_blk->blklen); 2309 2310 if (params_to_get & SA_PARAM_NUMBLOCKS) 2311 *numblocks = scsi_3btoul(mode_blk->nblocks); 2312 2313 if (params_to_get & SA_PARAM_BUFF_MODE) 2314 *buff_mode = mode_hdr->dev_spec & SMH_SA_BUF_MODE_MASK; 2315 2316 if (params_to_get & SA_PARAM_DENSITY) 2317 *density = mode_blk->density; 2318 2319 if (params_to_get & SA_PARAM_WP) 2320 *write_protect = (mode_hdr->dev_spec & SMH_SA_WP)? TRUE : FALSE; 2321 2322 if (params_to_get & SA_PARAM_SPEED) 2323 *speed = mode_hdr->dev_spec & SMH_SA_SPEED_MASK; 2324 2325 if (params_to_get & SA_PARAM_COMPRESSION) { 2326 if (cpage == SA_DATA_COMPRESSION_PAGE) { 2327 struct scsi_data_compression_page *cp = &ntcs->dcomp; 2328 *comp_supported = 2329 (cp->dce_and_dcc & SA_DCP_DCC)? TRUE : FALSE; 2330 *comp_enabled = 2331 (cp->dce_and_dcc & SA_DCP_DCE)? TRUE : FALSE; 2332 *comp_algorithm = scsi_4btoul(cp->comp_algorithm); 2333 } else { 2334 struct scsi_dev_conf_page *cp = &ntcs->dconf; 2335 /* 2336 * We don't really know whether this device supports 2337 * Data Compression if the the algorithm field is 2338 * zero. Just say we do. 2339 */ 2340 *comp_supported = TRUE; 2341 *comp_enabled = 2342 (cp->sel_comp_alg != SA_COMP_NONE)? TRUE : FALSE; 2343 *comp_algorithm = cp->sel_comp_alg; 2344 } 2345 if (tcs != NULL) 2346 bcopy(ntcs, tcs , sizeof (sa_comp_t)); 2347 } 2348 2349 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 2350 int idx; 2351 char *xyz = mode_buffer; 2352 xpt_print_path(periph->path); 2353 printf("Mode Sense Data="); 2354 for (idx = 0; idx < mode_buffer_len; idx++) 2355 printf(" 0x%02x", xyz[idx] & 0xff); 2356 printf("\n"); 2357 } 2358 2359 sagetparamsexit: 2360 2361 xpt_release_ccb(ccb); 2362 free(mode_buffer, M_TEMP); 2363 return(error); 2364 } 2365 2366 /* 2367 * The purpose of this function is to set one of four different parameters 2368 * for a tape drive: 2369 * - blocksize 2370 * - density 2371 * - compression / compression algorithm 2372 * - buffering mode 2373 * 2374 * The assumption is that this will be called from saioctl(), and therefore 2375 * from a process context. Thus the waiting malloc calls below. If that 2376 * assumption ever changes, the malloc calls should be changed to be 2377 * NOWAIT mallocs. 2378 * 2379 * Any or all of the four parameters may be set when this function is 2380 * called. It should handle setting more than one parameter at once. 2381 */ 2382 static int 2383 sasetparams(struct cam_periph *periph, sa_params params_to_set, 2384 u_int32_t blocksize, u_int8_t density, u_int32_t calg, 2385 u_int32_t sense_flags) 2386 { 2387 struct sa_softc *softc; 2388 u_int32_t current_blocksize; 2389 u_int32_t current_calg; 2390 u_int8_t current_density; 2391 u_int8_t current_speed; 2392 int comp_enabled, comp_supported; 2393 void *mode_buffer; 2394 int mode_buffer_len; 2395 struct scsi_mode_header_6 *mode_hdr; 2396 struct scsi_mode_blk_desc *mode_blk; 2397 sa_comp_t *ccomp, *cpage; 2398 int buff_mode; 2399 union ccb *ccb = NULL; 2400 int error; 2401 2402 softc = (struct sa_softc *)periph->softc; 2403 2404 ccomp = malloc(sizeof (sa_comp_t), M_TEMP, M_WAITOK); 2405 2406 /* 2407 * Since it doesn't make sense to set the number of blocks, or 2408 * write protection, we won't try to get the current value. We 2409 * always want to get the blocksize, so we can set it back to the 2410 * proper value. 2411 */ 2412 error = sagetparams(periph, 2413 params_to_set | SA_PARAM_BLOCKSIZE | SA_PARAM_SPEED, 2414 ¤t_blocksize, ¤t_density, NULL, &buff_mode, NULL, 2415 ¤t_speed, &comp_supported, &comp_enabled, 2416 ¤t_calg, ccomp); 2417 2418 if (error != 0) { 2419 free(ccomp, M_TEMP); 2420 return(error); 2421 } 2422 2423 mode_buffer_len = sizeof(*mode_hdr) + sizeof(*mode_blk); 2424 if (params_to_set & SA_PARAM_COMPRESSION) 2425 mode_buffer_len += sizeof (sa_comp_t); 2426 2427 mode_buffer = malloc(mode_buffer_len, M_TEMP, M_WAITOK); 2428 bzero(mode_buffer, mode_buffer_len); 2429 2430 mode_hdr = (struct scsi_mode_header_6 *)mode_buffer; 2431 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 2432 2433 if (params_to_set & SA_PARAM_COMPRESSION) { 2434 cpage = (sa_comp_t *)&mode_blk[1]; 2435 bcopy(ccomp, cpage, sizeof (sa_comp_t)); 2436 } else 2437 cpage = NULL; 2438 2439 /* 2440 * If the caller wants us to set the blocksize, use the one they 2441 * pass in. Otherwise, use the blocksize we got back from the 2442 * mode select above. 2443 */ 2444 if (params_to_set & SA_PARAM_BLOCKSIZE) 2445 scsi_ulto3b(blocksize, mode_blk->blklen); 2446 else 2447 scsi_ulto3b(current_blocksize, mode_blk->blklen); 2448 2449 /* 2450 * Set density if requested, else preserve old density. 2451 * SCSI_SAME_DENSITY only applies to SCSI-2 or better 2452 * devices, else density we've latched up in our softc. 2453 */ 2454 if (params_to_set & SA_PARAM_DENSITY) { 2455 mode_blk->density = density; 2456 } else if (softc->scsi_rev > SCSI_REV_CCS) { 2457 mode_blk->density = SCSI_SAME_DENSITY; 2458 } else { 2459 mode_blk->density = softc->media_density; 2460 } 2461 2462 /* 2463 * For mode selects, these two fields must be zero. 2464 */ 2465 mode_hdr->data_length = 0; 2466 mode_hdr->medium_type = 0; 2467 2468 /* set the speed to the current value */ 2469 mode_hdr->dev_spec = current_speed; 2470 2471 /* set single-initiator buffering mode */ 2472 mode_hdr->dev_spec |= SMH_SA_BUF_MODE_SIBUF; 2473 2474 mode_hdr->blk_desc_len = sizeof(struct scsi_mode_blk_desc); 2475 2476 /* 2477 * First, if the user wants us to set the compression algorithm or 2478 * just turn compression on, check to make sure that this drive 2479 * supports compression. 2480 */ 2481 if (params_to_set & SA_PARAM_COMPRESSION) { 2482 /* 2483 * If the compression algorithm is 0, disable compression. 2484 * If the compression algorithm is non-zero, enable 2485 * compression and set the compression type to the 2486 * specified compression algorithm, unless the algorithm is 2487 * MT_COMP_ENABLE. In that case, we look at the 2488 * compression algorithm that is currently set and if it is 2489 * non-zero, we leave it as-is. If it is zero, and we have 2490 * saved a compression algorithm from a time when 2491 * compression was enabled before, set the compression to 2492 * the saved value. 2493 */ 2494 switch (ccomp->hdr.pagecode) { 2495 case SA_DATA_COMPRESSION_PAGE: 2496 if (ccomp->dcomp.dce_and_dcc & SA_DCP_DCC) { 2497 struct scsi_data_compression_page *dcp = &cpage->dcomp; 2498 if (calg == 0) { 2499 /* disable compression */ 2500 dcp->dce_and_dcc &= ~SA_DCP_DCE; 2501 break; 2502 } 2503 /* enable compression */ 2504 dcp->dce_and_dcc |= SA_DCP_DCE; 2505 /* enable decompression */ 2506 dcp->dde_and_red |= SA_DCP_DDE; 2507 if (calg != MT_COMP_ENABLE) { 2508 scsi_ulto4b(calg, dcp->comp_algorithm); 2509 } else if (scsi_4btoul(dcp->comp_algorithm) == 0 && 2510 softc->saved_comp_algorithm != 0) { 2511 scsi_ulto4b(softc->saved_comp_algorithm, 2512 dcp->comp_algorithm); 2513 } 2514 break; 2515 } 2516 case SA_DEVICE_CONFIGURATION_PAGE: /* NOT YET */ 2517 { 2518 struct scsi_dev_conf_page *dcp = &cpage->dconf; 2519 if (calg == 0) { 2520 dcp->sel_comp_alg = SA_COMP_NONE; 2521 break; 2522 } 2523 if (calg != MT_COMP_ENABLE) { 2524 dcp->sel_comp_alg = calg; 2525 } else if (dcp->sel_comp_alg == SA_COMP_NONE && 2526 softc->saved_comp_algorithm != 0) { 2527 dcp->sel_comp_alg = softc->saved_comp_algorithm; 2528 } 2529 break; 2530 } 2531 default: 2532 /* 2533 * The drive doesn't support compression, 2534 * so turn off the set compression bit. 2535 */ 2536 params_to_set &= ~SA_PARAM_COMPRESSION; 2537 xpt_print_path(periph->path); 2538 printf("device does not support compression\n"); 2539 /* 2540 * If that was the only thing the user wanted us to set, 2541 * clean up allocated resources and return with 2542 * 'operation not supported'. 2543 */ 2544 if (params_to_set == SA_PARAM_NONE) { 2545 free(mode_buffer, M_TEMP); 2546 return(ENODEV); 2547 } 2548 2549 /* 2550 * That wasn't the only thing the user wanted us to set. 2551 * So, decrease the stated mode buffer length by the 2552 * size of the compression mode page. 2553 */ 2554 mode_buffer_len -= sizeof(sa_comp_t); 2555 } 2556 } 2557 2558 ccb = cam_periph_getccb(periph, 1); 2559 2560 /* It is safe to retry this operation */ 2561 scsi_mode_select(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, 2562 (params_to_set & SA_PARAM_COMPRESSION)? TRUE : FALSE, 2563 FALSE, mode_buffer, mode_buffer_len, SSD_FULL_SIZE, 5000); 2564 2565 error = cam_periph_runccb(ccb, saerror, 0, 2566 sense_flags, &softc->device_stats); 2567 2568 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 2569 int idx; 2570 char *xyz = mode_buffer; 2571 xpt_print_path(periph->path); 2572 printf("Err%d, Mode Select Data=", error); 2573 for (idx = 0; idx < mode_buffer_len; idx++) 2574 printf(" 0x%02x", xyz[idx] & 0xff); 2575 printf("\n"); 2576 } 2577 2578 2579 if (error == 0) { 2580 xpt_release_ccb(ccb); 2581 } else { 2582 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 2583 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, 0); 2584 2585 /* 2586 * If we were setting the blocksize, and that failed, we 2587 * want to set it to its original value. If we weren't 2588 * setting the blocksize, we don't want to change it. 2589 */ 2590 scsi_ulto3b(current_blocksize, mode_blk->blklen); 2591 2592 /* 2593 * Set density if requested, else preserve old density. 2594 * SCSI_SAME_DENSITY only applies to SCSI-2 or better 2595 * devices, else density we've latched up in our softc. 2596 */ 2597 if (params_to_set & SA_PARAM_DENSITY) { 2598 mode_blk->density = current_density; 2599 } else if (softc->scsi_rev > SCSI_REV_CCS) { 2600 mode_blk->density = SCSI_SAME_DENSITY; 2601 } else { 2602 mode_blk->density = softc->media_density; 2603 } 2604 2605 if (params_to_set & SA_PARAM_COMPRESSION) 2606 bcopy(ccomp, cpage, sizeof (sa_comp_t)); 2607 2608 /* 2609 * The retry count is the only CCB field that might have been 2610 * changed that we care about, so reset it back to 1. 2611 */ 2612 ccb->ccb_h.retry_count = 1; 2613 cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 2614 2615 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 2616 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, 0); 2617 2618 xpt_release_ccb(ccb); 2619 } 2620 2621 if (ccomp != NULL) 2622 free(ccomp, M_TEMP); 2623 2624 if (params_to_set & SA_PARAM_COMPRESSION) { 2625 if (error) { 2626 softc->flags &= ~SA_FLAG_COMP_ENABLED; 2627 /* 2628 * Even if we get an error setting compression, 2629 * do not say that we don't support it. We could 2630 * have been wrong, or it may be media specific. 2631 * softc->flags &= ~SA_FLAG_COMP_SUPP; 2632 */ 2633 softc->saved_comp_algorithm = softc->comp_algorithm; 2634 softc->comp_algorithm = 0; 2635 } else { 2636 softc->flags |= SA_FLAG_COMP_ENABLED; 2637 softc->comp_algorithm = calg; 2638 } 2639 } 2640 2641 free(mode_buffer, M_TEMP); 2642 return(error); 2643 } 2644 2645 static void 2646 saprevent(struct cam_periph *periph, int action) 2647 { 2648 struct sa_softc *softc; 2649 union ccb *ccb; 2650 int error, sf; 2651 2652 softc = (struct sa_softc *)periph->softc; 2653 2654 if ((action == PR_ALLOW) && (softc->flags & SA_FLAG_TAPE_LOCKED) == 0) 2655 return; 2656 if ((action == PR_PREVENT) && (softc->flags & SA_FLAG_TAPE_LOCKED) != 0) 2657 return; 2658 2659 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) 2660 sf = 0; 2661 else 2662 sf = SF_QUIET_IR; 2663 2664 ccb = cam_periph_getccb(periph, 1); 2665 2666 /* It is safe to retry this operation */ 2667 scsi_prevent(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, action, 2668 SSD_FULL_SIZE, 60000); 2669 2670 /* 2671 * We can be quiet about illegal requests. 2672 */ 2673 error = cam_periph_runccb(ccb, saerror, 0, sf, &softc->device_stats); 2674 2675 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 2676 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 2677 2678 if (error == 0) { 2679 if (action == PR_ALLOW) 2680 softc->flags &= ~SA_FLAG_TAPE_LOCKED; 2681 else 2682 softc->flags |= SA_FLAG_TAPE_LOCKED; 2683 } 2684 2685 xpt_release_ccb(ccb); 2686 } 2687 2688 static int 2689 sarewind(struct cam_periph *periph) 2690 { 2691 union ccb *ccb; 2692 struct sa_softc *softc; 2693 int error; 2694 2695 softc = (struct sa_softc *)periph->softc; 2696 2697 ccb = cam_periph_getccb(periph, 1); 2698 2699 /* It is safe to retry this operation */ 2700 scsi_rewind(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 2701 SSD_FULL_SIZE, (SA_REWIND_TIMEOUT) * 60 * 1000); 2702 2703 softc->dsreg = MTIO_DSREG_REW; 2704 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 2705 softc->dsreg = MTIO_DSREG_REST; 2706 2707 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 2708 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 2709 2710 xpt_release_ccb(ccb); 2711 if (error == 0) 2712 softc->fileno = softc->blkno = (daddr_t) 0; 2713 else 2714 softc->fileno = softc->blkno = (daddr_t) -1; 2715 return (error); 2716 } 2717 2718 static int 2719 saspace(struct cam_periph *periph, int count, scsi_space_code code) 2720 { 2721 union ccb *ccb; 2722 struct sa_softc *softc; 2723 int error; 2724 2725 softc = (struct sa_softc *)periph->softc; 2726 2727 ccb = cam_periph_getccb(periph, 1); 2728 2729 /* This cannot be retried */ 2730 2731 scsi_space(&ccb->csio, 0, sadone, MSG_SIMPLE_Q_TAG, code, count, 2732 SSD_FULL_SIZE, (SA_SPACE_TIMEOUT) * 60 * 1000); 2733 2734 softc->dsreg = (count < 0)? MTIO_DSREG_REV : MTIO_DSREG_FWD; 2735 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 2736 softc->dsreg = MTIO_DSREG_REST; 2737 2738 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 2739 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 2740 2741 xpt_release_ccb(ccb); 2742 2743 /* 2744 * If a spacing operation has failed, we need to invalidate 2745 * this mount. 2746 * 2747 * If the spacing operation was setmarks or to end of recorded data, 2748 * we no longer know our relative position. 2749 * 2750 * We are not managing residuals here (really). 2751 */ 2752 if (error) { 2753 softc->fileno = softc->blkno = (daddr_t) -1; 2754 } else if (code == SS_SETMARKS || code == SS_EOD) { 2755 softc->fileno = softc->blkno = (daddr_t) -1; 2756 } else if (code == SS_FILEMARKS && softc->fileno != (daddr_t) -1) { 2757 softc->fileno += count; 2758 softc->blkno = 0; 2759 } else if (code == SS_BLOCKS && softc->blkno != (daddr_t) -1) { 2760 softc->blkno += count; 2761 } 2762 return (error); 2763 } 2764 2765 static int 2766 sawritefilemarks(struct cam_periph *periph, int nmarks, int setmarks) 2767 { 2768 union ccb *ccb; 2769 struct sa_softc *softc; 2770 int error; 2771 2772 softc = (struct sa_softc *)periph->softc; 2773 2774 ccb = cam_periph_getccb(periph, 1); 2775 2776 softc->dsreg = MTIO_DSREG_FMK; 2777 /* this *must* not be retried */ 2778 scsi_write_filemarks(&ccb->csio, 0, sadone, MSG_SIMPLE_Q_TAG, 2779 FALSE, setmarks, nmarks, SSD_FULL_SIZE, 60000); 2780 softc->dsreg = MTIO_DSREG_REST; 2781 2782 2783 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 2784 2785 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 2786 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 2787 2788 /* 2789 * XXXX: Get back the actual number of filemarks written 2790 * XXXX: (there can be a residual). 2791 */ 2792 if (error == 0 && nmarks) { 2793 struct sa_softc *softc = (struct sa_softc *)periph->softc; 2794 softc->filemarks += nmarks; 2795 } 2796 xpt_release_ccb(ccb); 2797 2798 /* 2799 * Update relative positions (if we're doing that). 2800 */ 2801 if (error) { 2802 softc->fileno = softc->blkno = (daddr_t) -1; 2803 } else if (softc->fileno != (daddr_t) -1) { 2804 softc->fileno += nmarks; 2805 softc->blkno = 0; 2806 } 2807 return (error); 2808 } 2809 2810 static int 2811 sardpos(struct cam_periph *periph, int hard, u_int32_t *blkptr) 2812 { 2813 struct scsi_tape_position_data loc; 2814 union ccb *ccb; 2815 struct sa_softc *softc = (struct sa_softc *)periph->softc; 2816 int error; 2817 2818 /* 2819 * We have to try and flush any buffered writes here if we were writing. 2820 * 2821 * The SCSI specification is vague enough about situations like 2822 * different sized blocks in a tape drive buffer as to make one 2823 * wary about trying to figure out the actual block location value 2824 * if data is in the tape drive buffer. 2825 */ 2826 ccb = cam_periph_getccb(periph, 1); 2827 2828 if (softc->flags & SA_FLAG_TAPE_WRITTEN) { 2829 error = sawritefilemarks(periph, 0, 0); 2830 if (error && error != EACCES) 2831 return (error); 2832 } 2833 2834 scsi_read_position(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, 2835 hard, &loc, SSD_FULL_SIZE, 5000); 2836 softc->dsreg = MTIO_DSREG_RBSY; 2837 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 2838 softc->dsreg = MTIO_DSREG_REST; 2839 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 2840 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, 0); 2841 2842 if (error == 0) { 2843 if (loc.flags & SA_RPOS_UNCERTAIN) { 2844 error = EINVAL; /* nothing is certain */ 2845 } else { 2846 #if 0 2847 u_int32_t firstblk, lastblk, nbufblk, nbufbyte; 2848 2849 firstblk = scsi_4btoul(loc.firstblk); 2850 lastblk = scsi_4btoul(loc.lastblk); 2851 nbufblk = scsi_4btoul(loc.nbufblk); 2852 nbufbyte = scsi_4btoul(loc.nbufbyte); 2853 if (lastblk || nbufblk || nbufbyte) { 2854 xpt_print_path(periph->path); 2855 printf("rdpos firstblk 0x%x lastblk 0x%x bufblk" 2856 " 0x%x bufbyte 0x%x\n", firstblk, lastblk, 2857 nbufblk, nbufbyte); 2858 } 2859 *blkptr = firstblk; 2860 #else 2861 *blkptr = scsi_4btoul(loc.firstblk); 2862 #endif 2863 } 2864 } 2865 2866 xpt_release_ccb(ccb); 2867 return (error); 2868 } 2869 2870 static int 2871 sasetpos(struct cam_periph *periph, int hard, u_int32_t *blkptr) 2872 { 2873 union ccb *ccb; 2874 struct sa_softc *softc; 2875 int error; 2876 2877 /* 2878 * We used to try and flush any buffered writes here. 2879 * Now we push this onto user applications to either 2880 * flush the pending writes themselves (via a zero count 2881 * WRITE FILEMARKS command) or they can trust their tape 2882 * drive to do this correctly for them. 2883 */ 2884 2885 softc = (struct sa_softc *)periph->softc; 2886 ccb = cam_periph_getccb(periph, 1); 2887 2888 2889 scsi_set_position(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, 2890 hard, *blkptr, SSD_FULL_SIZE, 60 * 60 * 1000); 2891 2892 softc->dsreg = MTIO_DSREG_POS; 2893 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 2894 softc->dsreg = MTIO_DSREG_REST; 2895 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 2896 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, 0); 2897 xpt_release_ccb(ccb); 2898 /* 2899 * Note relative file && block number position as now unknown. 2900 */ 2901 softc->fileno = softc->blkno = (daddr_t) -1; 2902 return (error); 2903 } 2904 2905 static int 2906 saretension(struct cam_periph *periph) 2907 { 2908 union ccb *ccb; 2909 struct sa_softc *softc; 2910 int error; 2911 2912 softc = (struct sa_softc *)periph->softc; 2913 2914 ccb = cam_periph_getccb(periph, 1); 2915 2916 /* It is safe to retry this operation */ 2917 scsi_load_unload(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 2918 FALSE, TRUE, TRUE, SSD_FULL_SIZE, (SA_ERASE_TIMEOUT) * 60 * 1000); 2919 2920 softc->dsreg = MTIO_DSREG_TEN; 2921 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 2922 softc->dsreg = MTIO_DSREG_REST; 2923 2924 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 2925 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 2926 xpt_release_ccb(ccb); 2927 if (error == 0) 2928 softc->fileno = softc->blkno = (daddr_t) 0; 2929 else 2930 softc->fileno = softc->blkno = (daddr_t) -1; 2931 return(error); 2932 } 2933 2934 static int 2935 sareservereleaseunit(struct cam_periph *periph, int reserve) 2936 { 2937 union ccb *ccb; 2938 struct sa_softc *softc; 2939 int error, sflag; 2940 2941 softc = (struct sa_softc *)periph->softc; 2942 2943 /* 2944 * We set SF_RETRY_UA, since this is often the first command run 2945 * when a tape device is opened, and there may be a unit attention 2946 * condition pending. 2947 */ 2948 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) 2949 sflag = SF_RETRY_UA; 2950 else 2951 sflag = SF_RETRY_UA|SF_QUIET_IR; 2952 2953 sflag |= SF_RETRY_SELTO; 2954 2955 ccb = cam_periph_getccb(periph, 1); 2956 2957 /* It is safe to retry this operation */ 2958 scsi_reserve_release_unit(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, 2959 FALSE, 0, SSD_FULL_SIZE, 5000, reserve); 2960 2961 softc->dsreg = MTIO_DSREG_RBSY; 2962 error = cam_periph_runccb(ccb, saerror, 0, sflag, &softc->device_stats); 2963 softc->dsreg = MTIO_DSREG_REST; 2964 2965 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 2966 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 2967 2968 xpt_release_ccb(ccb); 2969 2970 /* 2971 * If the error was Illegal Request, then the device doesn't support 2972 * RESERVE/RELEASE. This is not an error. 2973 */ 2974 if (error == EINVAL) { 2975 error = 0; 2976 } 2977 2978 return (error); 2979 } 2980 2981 static int 2982 saloadunload(struct cam_periph *periph, int load) 2983 { 2984 union ccb *ccb; 2985 struct sa_softc *softc; 2986 int error; 2987 2988 softc = (struct sa_softc *)periph->softc; 2989 2990 ccb = cam_periph_getccb(periph, 1); 2991 2992 /* It is safe to retry this operation */ 2993 scsi_load_unload(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 2994 FALSE, FALSE, load, SSD_FULL_SIZE, 60000); 2995 2996 softc->dsreg = (load)? MTIO_DSREG_LD : MTIO_DSREG_UNL; 2997 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 2998 softc->dsreg = MTIO_DSREG_REST; 2999 3000 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3001 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 3002 xpt_release_ccb(ccb); 3003 3004 if (error || load == 0) 3005 softc->fileno = softc->blkno = (daddr_t) -1; 3006 else if (error == 0) 3007 softc->fileno = softc->blkno = (daddr_t) 0; 3008 return (error); 3009 } 3010 3011 static int 3012 saerase(struct cam_periph *periph, int longerase) 3013 { 3014 3015 union ccb *ccb; 3016 struct sa_softc *softc; 3017 int error; 3018 3019 softc = (struct sa_softc *)periph->softc; 3020 3021 ccb = cam_periph_getccb(periph, 1); 3022 3023 scsi_erase(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, FALSE, longerase, 3024 SSD_FULL_SIZE, (SA_ERASE_TIMEOUT) * 60 * 1000); 3025 3026 softc->dsreg = MTIO_DSREG_ZER; 3027 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 3028 softc->dsreg = MTIO_DSREG_REST; 3029 3030 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3031 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 3032 xpt_release_ccb(ccb); 3033 return (error); 3034 } 3035 3036 #endif /* KERNEL */ 3037 3038 /* 3039 * Read tape block limits command. 3040 */ 3041 void 3042 scsi_read_block_limits(struct ccb_scsiio *csio, u_int32_t retries, 3043 void (*cbfcnp)(struct cam_periph *, union ccb *), 3044 u_int8_t tag_action, 3045 struct scsi_read_block_limits_data *rlimit_buf, 3046 u_int8_t sense_len, u_int32_t timeout) 3047 { 3048 struct scsi_read_block_limits *scsi_cmd; 3049 3050 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_IN, tag_action, 3051 (u_int8_t *)rlimit_buf, sizeof(*rlimit_buf), sense_len, 3052 sizeof(*scsi_cmd), timeout); 3053 3054 scsi_cmd = (struct scsi_read_block_limits *)&csio->cdb_io.cdb_bytes; 3055 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3056 scsi_cmd->opcode = READ_BLOCK_LIMITS; 3057 } 3058 3059 void 3060 scsi_sa_read_write(struct ccb_scsiio *csio, u_int32_t retries, 3061 void (*cbfcnp)(struct cam_periph *, union ccb *), 3062 u_int8_t tag_action, int readop, int sli, 3063 int fixed, u_int32_t length, u_int8_t *data_ptr, 3064 u_int32_t dxfer_len, u_int8_t sense_len, u_int32_t timeout) 3065 { 3066 struct scsi_sa_rw *scsi_cmd; 3067 3068 scsi_cmd = (struct scsi_sa_rw *)&csio->cdb_io.cdb_bytes; 3069 scsi_cmd->opcode = readop ? SA_READ : SA_WRITE; 3070 scsi_cmd->sli_fixed = 0; 3071 if (sli && readop) 3072 scsi_cmd->sli_fixed |= SAR_SLI; 3073 if (fixed) 3074 scsi_cmd->sli_fixed |= SARW_FIXED; 3075 scsi_ulto3b(length, scsi_cmd->length); 3076 scsi_cmd->control = 0; 3077 3078 cam_fill_csio(csio, retries, cbfcnp, readop ? CAM_DIR_IN : CAM_DIR_OUT, 3079 tag_action, data_ptr, dxfer_len, sense_len, 3080 sizeof(*scsi_cmd), timeout); 3081 } 3082 3083 void 3084 scsi_load_unload(struct ccb_scsiio *csio, u_int32_t retries, 3085 void (*cbfcnp)(struct cam_periph *, union ccb *), 3086 u_int8_t tag_action, int immediate, int eot, 3087 int reten, int load, u_int8_t sense_len, 3088 u_int32_t timeout) 3089 { 3090 struct scsi_load_unload *scsi_cmd; 3091 3092 scsi_cmd = (struct scsi_load_unload *)&csio->cdb_io.cdb_bytes; 3093 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3094 scsi_cmd->opcode = LOAD_UNLOAD; 3095 if (immediate) 3096 scsi_cmd->immediate = SLU_IMMED; 3097 if (eot) 3098 scsi_cmd->eot_reten_load |= SLU_EOT; 3099 if (reten) 3100 scsi_cmd->eot_reten_load |= SLU_RETEN; 3101 if (load) 3102 scsi_cmd->eot_reten_load |= SLU_LOAD; 3103 3104 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, 3105 NULL, 0, sense_len, sizeof(*scsi_cmd), timeout); 3106 } 3107 3108 void 3109 scsi_rewind(struct ccb_scsiio *csio, u_int32_t retries, 3110 void (*cbfcnp)(struct cam_periph *, union ccb *), 3111 u_int8_t tag_action, int immediate, u_int8_t sense_len, 3112 u_int32_t timeout) 3113 { 3114 struct scsi_rewind *scsi_cmd; 3115 3116 scsi_cmd = (struct scsi_rewind *)&csio->cdb_io.cdb_bytes; 3117 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3118 scsi_cmd->opcode = REWIND; 3119 if (immediate) 3120 scsi_cmd->immediate = SREW_IMMED; 3121 3122 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3123 0, sense_len, sizeof(*scsi_cmd), timeout); 3124 } 3125 3126 void 3127 scsi_space(struct ccb_scsiio *csio, u_int32_t retries, 3128 void (*cbfcnp)(struct cam_periph *, union ccb *), 3129 u_int8_t tag_action, scsi_space_code code, 3130 u_int32_t count, u_int8_t sense_len, u_int32_t timeout) 3131 { 3132 struct scsi_space *scsi_cmd; 3133 3134 scsi_cmd = (struct scsi_space *)&csio->cdb_io.cdb_bytes; 3135 scsi_cmd->opcode = SPACE; 3136 scsi_cmd->code = code; 3137 scsi_ulto3b(count, scsi_cmd->count); 3138 scsi_cmd->control = 0; 3139 3140 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3141 0, sense_len, sizeof(*scsi_cmd), timeout); 3142 } 3143 3144 void 3145 scsi_write_filemarks(struct ccb_scsiio *csio, u_int32_t retries, 3146 void (*cbfcnp)(struct cam_periph *, union ccb *), 3147 u_int8_t tag_action, int immediate, int setmark, 3148 u_int32_t num_marks, u_int8_t sense_len, 3149 u_int32_t timeout) 3150 { 3151 struct scsi_write_filemarks *scsi_cmd; 3152 3153 scsi_cmd = (struct scsi_write_filemarks *)&csio->cdb_io.cdb_bytes; 3154 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3155 scsi_cmd->opcode = WRITE_FILEMARKS; 3156 if (immediate) 3157 scsi_cmd->byte2 |= SWFMRK_IMMED; 3158 if (setmark) 3159 scsi_cmd->byte2 |= SWFMRK_WSMK; 3160 3161 scsi_ulto3b(num_marks, scsi_cmd->num_marks); 3162 3163 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3164 0, sense_len, sizeof(*scsi_cmd), timeout); 3165 } 3166 3167 /* 3168 * The reserve and release unit commands differ only by their opcodes. 3169 */ 3170 void 3171 scsi_reserve_release_unit(struct ccb_scsiio *csio, u_int32_t retries, 3172 void (*cbfcnp)(struct cam_periph *, union ccb *), 3173 u_int8_t tag_action, int third_party, 3174 int third_party_id, u_int8_t sense_len, 3175 u_int32_t timeout, int reserve) 3176 { 3177 struct scsi_reserve_release_unit *scsi_cmd; 3178 3179 scsi_cmd = (struct scsi_reserve_release_unit *)&csio->cdb_io.cdb_bytes; 3180 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3181 3182 if (reserve) 3183 scsi_cmd->opcode = RESERVE_UNIT; 3184 else 3185 scsi_cmd->opcode = RELEASE_UNIT; 3186 3187 if (third_party) { 3188 scsi_cmd->lun_thirdparty |= SRRU_3RD_PARTY; 3189 scsi_cmd->lun_thirdparty |= 3190 ((third_party_id << SRRU_3RD_SHAMT) & SRRU_3RD_MASK); 3191 } 3192 3193 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3194 0, sense_len, sizeof(*scsi_cmd), timeout); 3195 } 3196 3197 void 3198 scsi_erase(struct ccb_scsiio *csio, u_int32_t retries, 3199 void (*cbfcnp)(struct cam_periph *, union ccb *), 3200 u_int8_t tag_action, int immediate, int long_erase, 3201 u_int8_t sense_len, u_int32_t timeout) 3202 { 3203 struct scsi_erase *scsi_cmd; 3204 3205 scsi_cmd = (struct scsi_erase *)&csio->cdb_io.cdb_bytes; 3206 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3207 3208 scsi_cmd->opcode = ERASE; 3209 3210 if (immediate) 3211 scsi_cmd->lun_imm_long |= SE_IMMED; 3212 3213 if (long_erase) 3214 scsi_cmd->lun_imm_long |= SE_LONG; 3215 3216 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3217 0, sense_len, sizeof(*scsi_cmd), timeout); 3218 } 3219 3220 /* 3221 * Read Tape Position command. 3222 */ 3223 void 3224 scsi_read_position(struct ccb_scsiio *csio, u_int32_t retries, 3225 void (*cbfcnp)(struct cam_periph *, union ccb *), 3226 u_int8_t tag_action, int hardsoft, 3227 struct scsi_tape_position_data *sbp, 3228 u_int8_t sense_len, u_int32_t timeout) 3229 { 3230 struct scsi_tape_read_position *scmd; 3231 3232 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_IN, tag_action, 3233 (u_int8_t *)sbp, sizeof (*sbp), sense_len, sizeof(*scmd), timeout); 3234 scmd = (struct scsi_tape_read_position *)&csio->cdb_io.cdb_bytes; 3235 bzero(scmd, sizeof(*scmd)); 3236 scmd->opcode = READ_POSITION; 3237 scmd->byte1 = hardsoft; 3238 } 3239 3240 /* 3241 * Set Tape Position command. 3242 */ 3243 void 3244 scsi_set_position(struct ccb_scsiio *csio, u_int32_t retries, 3245 void (*cbfcnp)(struct cam_periph *, union ccb *), 3246 u_int8_t tag_action, int hardsoft, u_int32_t blkno, 3247 u_int8_t sense_len, u_int32_t timeout) 3248 { 3249 struct scsi_tape_locate *scmd; 3250 3251 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, 3252 (u_int8_t *)NULL, 0, sense_len, sizeof(*scmd), timeout); 3253 scmd = (struct scsi_tape_locate *)&csio->cdb_io.cdb_bytes; 3254 bzero(scmd, sizeof(*scmd)); 3255 scmd->opcode = LOCATE; 3256 if (hardsoft) 3257 scmd->byte1 |= SA_SPOS_BT; 3258 scsi_ulto4b(blkno, scmd->blkaddr); 3259 } 3260