scsi_sa.c revision 56148
1/* 2 * $FreeBSD: head/sys/cam/scsi/scsi_sa.c 56148 2000-01-17 06:27:37Z mjacob $ 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#define REWIND_TIMEOUT (SA_REWIND_TIMEOUT * 60 * 1000) 83#define ERASE_TIMEOUT (SA_ERASE_TIMEOUT * 60 * 1000) 84#define SPACE_TIMEOUT (SA_SPACE_TIMEOUT * 60 * 1000) 85 86/* 87 * Additional options that can be set for config: SA_1FM_AT_EOT 88 */ 89 90#ifndef UNUSED_PARAMETER 91#define UNUSED_PARAMETER(x) x = x 92#endif 93 94#define QFRLS(ccb) \ 95 if (((ccb)->ccb_h.status & CAM_DEV_QFRZN) != 0) \ 96 cam_release_devq((ccb)->ccb_h.path, 0, 0, 0, FALSE) 97 98/* 99 * Driver states 100 */ 101 102 103typedef enum { 104 SA_STATE_NORMAL, SA_STATE_ABNORMAL 105} sa_state; 106 107typedef enum { 108 SA_CCB_BUFFER_IO, 109 SA_CCB_WAITING 110} sa_ccb_types; 111 112#define ccb_type ppriv_field0 113#define ccb_bp ppriv_ptr1 114 115typedef enum { 116 SA_FLAG_OPEN = 0x0001, 117 SA_FLAG_FIXED = 0x0002, 118 SA_FLAG_TAPE_LOCKED = 0x0004, 119 SA_FLAG_TAPE_MOUNTED = 0x0008, 120 SA_FLAG_TAPE_WP = 0x0010, 121 SA_FLAG_TAPE_WRITTEN = 0x0020, 122 SA_FLAG_EOM_PENDING = 0x0040, 123 SA_FLAG_EIO_PENDING = 0x0080, 124 SA_FLAG_EOF_PENDING = 0x0100, 125 SA_FLAG_ERR_PENDING = (SA_FLAG_EOM_PENDING|SA_FLAG_EIO_PENDING| 126 SA_FLAG_EOF_PENDING), 127 SA_FLAG_INVALID = 0x0200, 128 SA_FLAG_COMP_ENABLED = 0x0400, 129 SA_FLAG_COMP_SUPP = 0x0800, 130 SA_FLAG_COMP_UNSUPP = 0x1000, 131 SA_FLAG_TAPE_FROZEN = 0x2000 132} sa_flags; 133 134typedef enum { 135 SA_MODE_REWIND = 0x00, 136 SA_MODE_NOREWIND = 0x01, 137 SA_MODE_OFFLINE = 0x02 138} sa_mode; 139 140typedef enum { 141 SA_PARAM_NONE = 0x00, 142 SA_PARAM_BLOCKSIZE = 0x01, 143 SA_PARAM_DENSITY = 0x02, 144 SA_PARAM_COMPRESSION = 0x04, 145 SA_PARAM_BUFF_MODE = 0x08, 146 SA_PARAM_NUMBLOCKS = 0x10, 147 SA_PARAM_WP = 0x20, 148 SA_PARAM_SPEED = 0x40, 149 SA_PARAM_ALL = 0x7f 150} sa_params; 151 152typedef enum { 153 SA_QUIRK_NONE = 0x00, 154 SA_QUIRK_NOCOMP = 0x01, /* can't deal with compression at all */ 155 SA_QUIRK_FIXED = 0x02, /* force fixed mode */ 156 SA_QUIRK_VARIABLE = 0x04, /* force variable mode */ 157 SA_QUIRK_2FM = 0x08, /* Needs Two File Marks at EOD */ 158 SA_QUIRK_1FM = 0x10 /* No more than 1 File Mark at EOD */ 159} sa_quirks; 160 161/* units are bits 4-7, 16-21 (1024 units) */ 162#define SAUNIT(DEV) \ 163 (((minor(DEV) & 0xF0) >> 4) | ((minor(DEV) & 0x3f0000) >> 16)) 164 165#define SAMODE(z) ((minor(z) & 0x3)) 166#define SADENSITY(z) (((minor(z) >> 2) & 0x3)) 167#define SA_IS_CTRL(z) (minor(z) & (1 << 29)) 168 169#define SA_NOT_CTLDEV 0 170#define SA_CTLDEV 1 171 172#define SA_ATYPE_R 0 173#define SA_ATYPE_NR 1 174#define SA_ATYPE_ER 2 175 176#define SAMINOR(ctl, unit, mode, access) \ 177 ((ctl << 29) | ((unit & 0x3f0) << 16) | ((unit & 0xf) << 4) | \ 178 (mode << 0x2) | (access & 0x3)) 179 180#define SA_NUM_MODES 4 181struct sa_devs { 182 dev_t ctl_dev; 183 struct sa_mode_devs { 184 dev_t r_dev; 185 dev_t nr_dev; 186 dev_t er_dev; 187 } mode_devs[SA_NUM_MODES]; 188 dev_t r_dev; 189 dev_t nr_dev; 190 dev_t er_dev; 191}; 192 193struct sa_softc { 194 sa_state state; 195 sa_flags flags; 196 sa_quirks quirks; 197 struct buf_queue_head buf_queue; 198 int queue_count; 199 struct devstat device_stats; 200 struct sa_devs devs; 201 int blk_gran; 202 int blk_mask; 203 int blk_shift; 204 u_int32_t max_blk; 205 u_int32_t min_blk; 206 u_int32_t comp_algorithm; 207 u_int32_t saved_comp_algorithm; 208 u_int32_t media_blksize; 209 u_int32_t last_media_blksize; 210 u_int32_t media_numblks; 211 u_int8_t media_density; 212 u_int8_t speed; 213 u_int8_t scsi_rev; 214 u_int8_t dsreg; /* mtio mt_dsreg, redux */ 215 int buffer_mode; 216 int filemarks; 217 union ccb saved_ccb; 218 219 /* 220 * Relative to BOT Location. 221 */ 222 daddr_t fileno; 223 daddr_t blkno; 224 225 /* 226 * Latched Error Info 227 */ 228 struct { 229 struct scsi_sense_data _last_io_sense; 230 u_int32_t _last_io_resid; 231 u_int8_t _last_io_cdb[CAM_MAX_CDBLEN]; 232 struct scsi_sense_data _last_ctl_sense; 233 u_int32_t _last_ctl_resid; 234 u_int8_t _last_ctl_cdb[CAM_MAX_CDBLEN]; 235#define last_io_sense errinfo._last_io_sense 236#define last_io_resid errinfo._last_io_resid 237#define last_io_cdb errinfo._last_io_cdb 238#define last_ctl_sense errinfo._last_ctl_sense 239#define last_ctl_resid errinfo._last_ctl_resid 240#define last_ctl_cdb errinfo._last_ctl_cdb 241 } errinfo; 242 /* 243 * Misc other flags/state 244 */ 245 u_int32_t 246 : 31, 247 ctrl_mode : 1; /* control device open */ 248}; 249 250struct sa_quirk_entry { 251 struct scsi_inquiry_pattern inq_pat; /* matching pattern */ 252 sa_quirks quirks; /* specific quirk type */ 253 u_int32_t prefblk; /* preferred blocksize when in fixed mode */ 254}; 255 256static struct sa_quirk_entry sa_quirk_table[] = 257{ 258 { 259 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 260 "Python 25601*", "*"}, SA_QUIRK_NOCOMP, 0 261 }, 262 { 263 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 264 "VIPER 150*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 265 }, 266 { 267 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 268 "VIPER 2525*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 1024 269 }, 270 { 271 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 272 "T20*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 273 }, 274 { 275 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 276 "T4000*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 277 }, 278 { 279 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 280 "HP-88780*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 281 }, 282 { 283 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "KENNEDY", 284 "*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 285 }, 286 { 287 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "M4 DATA", 288 "123107 SCSI*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 289 }, 290 { /* jreynold@primenet.com */ 291 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "Seagate", 292 "STT8000N*", "*"}, SA_QUIRK_1FM, 0 293 }, 294 { /* mike@sentex.net */ 295 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "Seagate", 296 "STT20000*", "*"}, SA_QUIRK_1FM, 0 297 }, 298 { 299 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 300 " TDC 3600", "U07:"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 301 }, 302 { 303 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 304 " TDC 3800", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 305 }, 306 { 307 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 308 " TDC 4100", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 309 }, 310 { 311 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 312 " TDC 4200", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 313 }, 314 { 315 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 316 " SLR*", "*"}, SA_QUIRK_1FM, 0 317 }, 318 { 319 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "WANGTEK", 320 "5525ES*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 321 }, 322 { 323 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "WANGTEK", 324 "51000*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 1024 325 } 326}; 327 328static d_open_t saopen; 329static d_close_t saclose; 330static d_strategy_t sastrategy; 331static d_ioctl_t saioctl; 332static periph_init_t sainit; 333static periph_ctor_t saregister; 334static periph_oninv_t saoninvalidate; 335static periph_dtor_t sacleanup; 336static periph_start_t sastart; 337static void saasync(void *callback_arg, u_int32_t code, 338 struct cam_path *path, void *arg); 339static void sadone(struct cam_periph *periph, 340 union ccb *start_ccb); 341static int saerror(union ccb *ccb, u_int32_t cam_flags, 342 u_int32_t sense_flags); 343static int sacheckeod(struct cam_periph *periph); 344static int sagetparams(struct cam_periph *periph, 345 sa_params params_to_get, 346 u_int32_t *blocksize, u_int8_t *density, 347 u_int32_t *numblocks, int *buff_mode, 348 u_int8_t *write_protect, u_int8_t *speed, 349 int *comp_supported, int *comp_enabled, 350 u_int32_t *comp_algorithm, 351 sa_comp_t *comp_page); 352static int sasetparams(struct cam_periph *periph, 353 sa_params params_to_set, 354 u_int32_t blocksize, u_int8_t density, 355 u_int32_t comp_algorithm, 356 u_int32_t sense_flags); 357static void saprevent(struct cam_periph *periph, int action); 358static int sarewind(struct cam_periph *periph); 359static int saspace(struct cam_periph *periph, int count, 360 scsi_space_code code); 361static int samount(struct cam_periph *, int, dev_t); 362static int saretension(struct cam_periph *periph); 363static int sareservereleaseunit(struct cam_periph *periph, 364 int reserve); 365static int saloadunload(struct cam_periph *periph, int load); 366static int saerase(struct cam_periph *periph, int longerase); 367static int sawritefilemarks(struct cam_periph *periph, 368 int nmarks, int setmarks); 369static int sardpos(struct cam_periph *periph, int, u_int32_t *); 370static int sasetpos(struct cam_periph *periph, int, u_int32_t *); 371 372 373static struct periph_driver sadriver = 374{ 375 sainit, "sa", 376 TAILQ_HEAD_INITIALIZER(sadriver.units), /* generation */ 0 377}; 378 379DATA_SET(periphdriver_set, sadriver); 380 381/* For 2.2-stable support */ 382#ifndef D_TAPE 383#define D_TAPE 0 384#endif 385 386#define SA_CDEV_MAJOR 14 387 388static struct cdevsw sa_cdevsw = { 389 /* open */ saopen, 390 /* close */ saclose, 391 /* read */ physread, 392 /* write */ physwrite, 393 /* ioctl */ saioctl, 394 /* poll */ nopoll, 395 /* mmap */ nommap, 396 /* strategy */ sastrategy, 397 /* name */ "sa", 398 /* maj */ SA_CDEV_MAJOR, 399 /* dump */ nodump, 400 /* psize */ nopsize, 401 /* flags */ D_TAPE, 402 /* bmaj */ -1 403}; 404 405static struct extend_array *saperiphs; 406 407static int 408saopen(dev_t dev, int flags, int fmt, struct proc *p) 409{ 410 struct cam_periph *periph; 411 struct sa_softc *softc; 412 int unit; 413 int mode; 414 int density; 415 int error; 416 int s; 417 418 unit = SAUNIT(dev); 419 mode = SAMODE(dev); 420 density = SADENSITY(dev); 421 422 s = splsoftcam(); 423 periph = cam_extend_get(saperiphs, unit); 424 if (periph == NULL) { 425 (void) splx(s); 426 return (ENXIO); 427 } 428 softc = (struct sa_softc *)periph->softc; 429 if ((error = cam_periph_lock(periph, PRIBIO|PCATCH)) != 0) { 430 splx(s); 431 return (error); 432 } 433 splx(s); 434 435 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE|CAM_DEBUG_INFO, 436 ("saopen(%d): dev=0x%x softc=0x%x\n", unit, unit, softc->flags)); 437 438 if (cam_periph_acquire(periph) != CAM_REQ_CMP) { 439 cam_periph_unlock(periph); 440 return (ENXIO); 441 } 442 if (SA_IS_CTRL(dev)) { 443 softc->ctrl_mode = 1; 444 cam_periph_unlock(periph); 445 return (0); 446 } 447 448 449 if (softc->flags & SA_FLAG_OPEN) { 450 error = EBUSY; 451 } else if (softc->flags & SA_FLAG_INVALID) { 452 error = ENXIO; 453 } else { 454 /* 455 * The function samount ensures media is loaded and ready. 456 * It also does a device RESERVE if the tape isn't yet mounted. 457 */ 458 error = samount(periph, flags, dev); 459 } 460 461 if (error) { 462 cam_periph_release(periph); 463 } else { 464 saprevent(periph, PR_PREVENT); 465 softc->flags |= SA_FLAG_OPEN; 466 } 467 cam_periph_unlock(periph); 468 return (error); 469} 470 471static int 472saclose(dev_t dev, int flag, int fmt, struct proc *p) 473{ 474 struct cam_periph *periph; 475 struct sa_softc *softc; 476 int unit, mode, error, writing, tmp; 477 int closedbits = SA_FLAG_OPEN; 478 479 unit = SAUNIT(dev); 480 mode = SAMODE(dev); 481 periph = cam_extend_get(saperiphs, unit); 482 if (periph == NULL) 483 return (ENXIO); 484 485 softc = (struct sa_softc *)periph->softc; 486 487 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE|CAM_DEBUG_INFO, 488 ("saclose(%d): dev=0x%x softc=0x%x\n", unit, unit, softc->flags)); 489 490 491 if ((error = cam_periph_lock(periph, PRIBIO)) != 0) { 492 return (error); 493 } 494 495 if (SA_IS_CTRL(dev)) { 496 softc->ctrl_mode = 0; 497 cam_periph_release(periph); 498 cam_periph_unlock(periph); 499 return (0); 500 } 501 502 /* 503 * Were we writing the tape? 504 */ 505 writing = (softc->flags & SA_FLAG_TAPE_WRITTEN) != 0; 506 507 /* 508 * See whether or not we need to write filemarks. If this 509 * fails, we probably have to assume we've lost tape 510 * position. 511 */ 512 error = sacheckeod(periph); 513 if (error) { 514 xpt_print_path(periph->path); 515 printf("failed to write terminating filemark(s)\n"); 516 softc->flags |= SA_FLAG_TAPE_FROZEN; 517 } 518 519 /* 520 * Whatever we end up doing, allow users to eject tapes from here on. 521 */ 522 saprevent(periph, PR_ALLOW); 523 524 /* 525 * Decide how to end... 526 */ 527 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) { 528 closedbits |= SA_FLAG_TAPE_FROZEN; 529 } else switch (mode) { 530 case SA_MODE_OFFLINE: 531 /* 532 * An 'offline' close is an unconditional release of 533 * frozen && mount conditions, irrespective of whether 534 * these operations succeeded. The reason for this is 535 * to allow at least some kind of programmatic way 536 * around our state getting all fouled up. If somebody 537 * issues an 'offline' command, that will be allowed 538 * to clear state. 539 */ 540 (void) sarewind(periph); 541 (void) saloadunload(periph, FALSE); 542 closedbits |= SA_FLAG_TAPE_MOUNTED|SA_FLAG_TAPE_FROZEN; 543 break; 544 case SA_MODE_REWIND: 545 /* 546 * If the rewind fails, return an error- if anyone cares, 547 * but not overwriting any previous error. 548 * 549 * We don't clear the notion of mounted here, but we do 550 * clear the notion of frozen if we successfully rewound. 551 */ 552 tmp = sarewind(periph); 553 if (tmp) { 554 if (error != 0) 555 error = tmp; 556 } else { 557 closedbits |= SA_FLAG_TAPE_FROZEN; 558 } 559 break; 560 case SA_MODE_NOREWIND: 561 /* 562 * If we're not rewinding/unloading the tape, find out 563 * whether we need to back up over one of two filemarks 564 * we wrote (if we wrote two filemarks) so that appends 565 * from this point on will be sane. 566 */ 567 if (error == 0 && writing && (softc->quirks & SA_QUIRK_2FM)) { 568 tmp = saspace(periph, -1, SS_FILEMARKS); 569 if (tmp) { 570 xpt_print_path(periph->path); 571 printf("unable to backspace over one of double" 572 " filemarks at end of tape\n"); 573 xpt_print_path(periph->path); 574 printf("it is possible that this device" 575 " needs a SA_QUIRK_1FM quirk set for it\n"); 576 softc->flags |= SA_FLAG_TAPE_FROZEN; 577 } 578 } 579 break; 580 default: 581 xpt_print_path(periph->path); 582 panic("unknown mode 0x%x in saclose\n", mode); 583 /* NOTREACHED */ 584 break; 585 } 586 587 /* 588 * We wish to note here that there are no more filemarks to be written. 589 */ 590 softc->filemarks = 0; 591 softc->flags &= ~SA_FLAG_TAPE_WRITTEN; 592 593 /* 594 * And we are no longer open for business. 595 */ 596 softc->flags &= ~closedbits; 597 598 /* 599 * Inform users if tape state if frozen.... 600 */ 601 if (softc->flags & SA_FLAG_TAPE_FROZEN) { 602 xpt_print_path(periph->path); 603 printf("tape is now frozen- use an OFFLINE, REWIND or MTEOM " 604 "command to clear this state.\n"); 605 } 606 607 /* release the device if it is no longer mounted */ 608 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) 609 sareservereleaseunit(periph, FALSE); 610 611 cam_periph_unlock(periph); 612 cam_periph_release(periph); 613 614 return (error); 615} 616 617/* 618 * Actually translate the requested transfer into one the physical driver 619 * can understand. The transfer is described by a buf and will include 620 * only one physical transfer. 621 */ 622static void 623sastrategy(struct buf *bp) 624{ 625 struct cam_periph *periph; 626 struct sa_softc *softc; 627 u_int unit; 628 int s; 629 630 if (SA_IS_CTRL(bp->b_dev)) { 631 bp->b_error = EINVAL; 632 goto bad; 633 } 634 unit = SAUNIT(bp->b_dev); 635 periph = cam_extend_get(saperiphs, unit); 636 if (periph == NULL) { 637 bp->b_error = ENXIO; 638 goto bad; 639 } 640 softc = (struct sa_softc *)periph->softc; 641 642 s = splsoftcam(); 643 644 if (softc->flags & SA_FLAG_INVALID) { 645 splx(s); 646 bp->b_error = ENXIO; 647 goto bad; 648 } 649 650 if (softc->flags & SA_FLAG_TAPE_FROZEN) { 651 splx(s); 652 bp->b_error = EPERM; 653 goto bad; 654 } 655 656 splx(s); 657 658 /* 659 * If it's a null transfer, return immediatly 660 */ 661 if (bp->b_bcount == 0) 662 goto done; 663 664 /* valid request? */ 665 if (softc->flags & SA_FLAG_FIXED) { 666 /* 667 * Fixed block device. The byte count must 668 * be a multiple of our block size. 669 */ 670 if (((softc->blk_mask != ~0) && 671 ((bp->b_bcount & softc->blk_mask) != 0)) || 672 ((softc->blk_mask == ~0) && 673 ((bp->b_bcount % softc->min_blk) != 0))) { 674 xpt_print_path(periph->path); 675 printf("Invalid request. Fixed block device " 676 "requests must be a multiple " 677 "of %d bytes\n", softc->min_blk); 678 bp->b_error = EINVAL; 679 goto bad; 680 } 681 } else if ((bp->b_bcount > softc->max_blk) || 682 (bp->b_bcount < softc->min_blk) || 683 (bp->b_bcount & softc->blk_mask) != 0) { 684 685 xpt_print_path(periph->path); 686 printf("Invalid request. Variable block device " 687 "requests must be "); 688 if (softc->blk_mask != 0) { 689 printf("a multiple of %d ", (0x1 << softc->blk_gran)); 690 } 691 printf("between %d and %d bytes\n", softc->min_blk, 692 softc->max_blk); 693 bp->b_error = EINVAL; 694 goto bad; 695 } 696 697 /* 698 * Mask interrupts so that the device cannot be invalidated until 699 * after we are in the queue. Otherwise, we might not properly 700 * clean up one of the buffers. 701 */ 702 s = splbio(); 703 704 /* 705 * Place it at the end of the queue. 706 */ 707 bufq_insert_tail(&softc->buf_queue, bp); 708 709 softc->queue_count++; 710 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("sastrategy: enqueuing a %d " 711 "%s byte %s queue count now %d\n", (int) bp->b_bcount, 712 (softc->flags & SA_FLAG_FIXED)? "fixed" : "variable", 713 (bp->b_flags & B_READ)? "read" : "write", softc->queue_count)); 714 715 splx(s); 716 717 /* 718 * Schedule ourselves for performing the work. 719 */ 720 xpt_schedule(periph, 1); 721 722 return; 723bad: 724 bp->b_flags |= B_ERROR; 725done: 726 727 /* 728 * Correctly set the buf to indicate a completed xfer 729 */ 730 bp->b_resid = bp->b_bcount; 731 biodone(bp); 732} 733 734static int 735saioctl(dev_t dev, u_long cmd, caddr_t arg, int flag, struct proc *p) 736{ 737 struct cam_periph *periph; 738 struct sa_softc *softc; 739 scsi_space_code spaceop; 740 int didlockperiph = 0; 741 int s; 742 int unit; 743 int mode; 744 int density; 745 int error = 0; 746 747 unit = SAUNIT(dev); 748 mode = SAMODE(dev); 749 density = SADENSITY(dev); 750 error = 0; /* shut up gcc */ 751 spaceop = 0; /* shut up gcc */ 752 753 periph = cam_extend_get(saperiphs, unit); 754 if (periph == NULL) 755 return (ENXIO); 756 757 softc = (struct sa_softc *)periph->softc; 758 759 /* 760 * Check for control mode accesses. We allow MTIOCGET and 761 * MTIOCERRSTAT (but need to be the only one open in order 762 * to clear latched status), and MTSETBSIZE, MTSETDNSTY 763 * and MTCOMP (but need to be the only one accessing this 764 * device to run those). 765 */ 766 767 if (SA_IS_CTRL(dev)) { 768 switch (cmd) { 769 case MTIOCGETEOTMODEL: 770 case MTIOCGET: 771 break; 772 case MTIOCERRSTAT: 773 /* 774 * If the periph isn't already locked, lock it 775 * so our MTIOCERRSTAT can reset latched error stats. 776 * 777 * If the periph is already locked, skip it because 778 * we're just getting status and it'll be up to the 779 * other thread that has this device open to do 780 * an MTIOCERRSTAT that would clear latched status. 781 */ 782 s = splsoftcam(); 783 if ((periph->flags & CAM_PERIPH_LOCKED) == 0) { 784 error = cam_periph_lock(periph, PRIBIO|PCATCH); 785 if (error != 0) { 786 splx(s); 787 return (error); 788 } 789 didlockperiph = 1; 790 } 791 break; 792 793 case MTIOCSETEOTMODEL: 794 case MTSETBSIZ: 795 case MTSETDNSTY: 796 case MTCOMP: 797 /* 798 * We need to acquire the peripheral here rather 799 * than at open time because we are sharing writable 800 * access to data structures. 801 */ 802 s = splsoftcam(); 803 error = cam_periph_lock(periph, PRIBIO|PCATCH); 804 if (error != 0) { 805 splx(s); 806 return (error); 807 } 808 didlockperiph = 1; 809 break; 810 811 default: 812 return (EINVAL); 813 } 814 } 815 816 /* 817 * Find the device that the user is talking about 818 */ 819 switch (cmd) { 820 case MTIOCGET: 821 { 822 struct mtget *g = (struct mtget *)arg; 823 824 /* 825 * If this isn't the control mode device, actually go out 826 * and ask the drive again what it's set to. 827 */ 828 if (!SA_IS_CTRL(dev)) { 829 u_int8_t write_protect; 830 int comp_enabled, comp_supported; 831 error = sagetparams(periph, SA_PARAM_ALL, 832 &softc->media_blksize, &softc->media_density, 833 &softc->media_numblks, &softc->buffer_mode, 834 &write_protect, &softc->speed, &comp_supported, 835 &comp_enabled, &softc->comp_algorithm, NULL); 836 if (error) 837 break; 838 if (write_protect) 839 softc->flags |= SA_FLAG_TAPE_WP; 840 else 841 softc->flags &= ~SA_FLAG_TAPE_WP; 842 softc->flags &= ~(SA_FLAG_COMP_SUPP| 843 SA_FLAG_COMP_ENABLED|SA_FLAG_COMP_UNSUPP); 844 if (comp_supported) { 845 if (softc->saved_comp_algorithm == 0) 846 softc->saved_comp_algorithm = 847 softc->comp_algorithm; 848 softc->flags |= SA_FLAG_COMP_SUPP; 849 if (comp_enabled) 850 softc->flags |= SA_FLAG_COMP_ENABLED; 851 } else 852 softc->flags |= SA_FLAG_COMP_UNSUPP; 853 } 854 bzero(g, sizeof(struct mtget)); 855 g->mt_type = MT_ISAR; 856 if (softc->flags & SA_FLAG_COMP_UNSUPP) { 857 g->mt_comp = MT_COMP_UNSUPP; 858 g->mt_comp0 = MT_COMP_UNSUPP; 859 g->mt_comp1 = MT_COMP_UNSUPP; 860 g->mt_comp2 = MT_COMP_UNSUPP; 861 g->mt_comp3 = MT_COMP_UNSUPP; 862 } else { 863 if ((softc->flags & SA_FLAG_COMP_ENABLED) == 0) { 864 g->mt_comp = MT_COMP_DISABLED; 865 } else { 866 g->mt_comp = softc->comp_algorithm; 867 } 868 g->mt_comp0 = softc->comp_algorithm; 869 g->mt_comp1 = softc->comp_algorithm; 870 g->mt_comp2 = softc->comp_algorithm; 871 g->mt_comp3 = softc->comp_algorithm; 872 } 873 g->mt_density = softc->media_density; 874 g->mt_density0 = softc->media_density; 875 g->mt_density1 = softc->media_density; 876 g->mt_density2 = softc->media_density; 877 g->mt_density3 = softc->media_density; 878 g->mt_blksiz = softc->media_blksize; 879 g->mt_blksiz0 = softc->media_blksize; 880 g->mt_blksiz1 = softc->media_blksize; 881 g->mt_blksiz2 = softc->media_blksize; 882 g->mt_blksiz3 = softc->media_blksize; 883 g->mt_fileno = softc->fileno; 884 g->mt_blkno = softc->blkno; 885 g->mt_dsreg = (short) softc->dsreg; 886 error = 0; 887 break; 888 } 889 case MTIOCERRSTAT: 890 { 891 struct scsi_tape_errors *sep = 892 &((union mterrstat *)arg)->scsi_errstat; 893 894 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, 895 ("saioctl: MTIOCERRSTAT\n")); 896 897 bzero(sep, sizeof(*sep)); 898 sep->io_resid = softc->last_io_resid; 899 bcopy((caddr_t) &softc->last_io_sense, sep->io_sense, 900 sizeof (sep->io_sense)); 901 bcopy((caddr_t) &softc->last_io_cdb, sep->io_cdb, 902 sizeof (sep->io_cdb)); 903 sep->ctl_resid = softc->last_ctl_resid; 904 bcopy((caddr_t) &softc->last_ctl_sense, sep->ctl_sense, 905 sizeof (sep->ctl_sense)); 906 bcopy((caddr_t) &softc->last_ctl_cdb, sep->ctl_cdb, 907 sizeof (sep->ctl_cdb)); 908 909 if (SA_IS_CTRL(dev) == 0 || didlockperiph) 910 bzero((caddr_t) &softc->errinfo, 911 sizeof (softc->errinfo)); 912 error = 0; 913 break; 914 } 915 case MTIOCTOP: 916 { 917 struct mtop *mt; 918 int count; 919 920 mt = (struct mtop *)arg; 921 922 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, 923 ("saioctl: op=0x%x count=0x%x\n", 924 mt->mt_op, mt->mt_count)); 925 926 count = mt->mt_count; 927 switch (mt->mt_op) { 928 case MTWEOF: /* write an end-of-file marker */ 929 /* XXXX: NEED TO CLEAR SA_TAPE_WRITTEN */ 930 error = sawritefilemarks(periph, count, FALSE); 931 break; 932 case MTWSS: /* write a setmark */ 933 error = sawritefilemarks(periph, count, TRUE); 934 break; 935 case MTBSR: /* backward space record */ 936 case MTFSR: /* forward space record */ 937 case MTBSF: /* backward space file */ 938 case MTFSF: /* forward space file */ 939 case MTBSS: /* backward space setmark */ 940 case MTFSS: /* forward space setmark */ 941 case MTEOD: /* space to end of recorded medium */ 942 { 943 int nmarks; 944 945 spaceop = SS_FILEMARKS; 946 nmarks = softc->filemarks; 947 error = sacheckeod(periph); 948 if (error) { 949 xpt_print_path(periph->path); 950 printf("EOD check prior to spacing failed\n"); 951 softc->flags |= SA_FLAG_EIO_PENDING; 952 break; 953 } 954 nmarks -= softc->filemarks; 955 switch(mt->mt_op) { 956 case MTBSR: 957 count = -count; 958 /* FALLTHROUGH */ 959 case MTFSR: 960 spaceop = SS_BLOCKS; 961 break; 962 case MTBSF: 963 count = -count; 964 /* FALLTHROUGH */ 965 case MTFSF: 966 break; 967 case MTBSS: 968 count = -count; 969 /* FALLTHROUGH */ 970 case MTFSS: 971 spaceop = SS_SETMARKS; 972 break; 973 case MTEOD: 974 spaceop = SS_EOD; 975 count = 0; 976 nmarks = 0; 977 break; 978 default: 979 error = EINVAL; 980 break; 981 } 982 if (error) 983 break; 984 985 nmarks = softc->filemarks; 986 /* 987 * XXX: Why are we checking again? 988 */ 989 error = sacheckeod(periph); 990 if (error) 991 break; 992 nmarks -= softc->filemarks; 993 error = saspace(periph, count - nmarks, spaceop); 994 /* 995 * At this point, clear that we've written the tape 996 * and that we've written any filemarks. We really 997 * don't know what the applications wishes to do next- 998 * the sacheckeod's will make sure we terminated the 999 * tape correctly if we'd been writing, but the next 1000 * action the user application takes will set again 1001 * whether we need to write filemarks. 1002 */ 1003 softc->flags &= 1004 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1005 softc->filemarks = 0; 1006 break; 1007 } 1008 case MTREW: /* rewind */ 1009 (void) sacheckeod(periph); 1010 error = sarewind(periph); 1011 /* see above */ 1012 softc->flags &= 1013 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1014 softc->filemarks = 0; 1015 break; 1016 case MTERASE: /* erase */ 1017 error = saerase(periph, count); 1018 softc->flags &= 1019 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1020 break; 1021 case MTRETENS: /* re-tension tape */ 1022 error = saretension(periph); 1023 softc->flags &= 1024 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1025 break; 1026 case MTOFFL: /* rewind and put the drive offline */ 1027 1028 (void) sacheckeod(periph); 1029 /* see above */ 1030 softc->flags &= ~SA_FLAG_TAPE_WRITTEN; 1031 softc->filemarks = 0; 1032 1033 error = sarewind(periph); 1034 /* clear the frozen flag anyway */ 1035 softc->flags &= ~SA_FLAG_TAPE_FROZEN; 1036 1037 /* 1038 * Be sure to allow media removal before ejecting. 1039 */ 1040 1041 saprevent(periph, PR_ALLOW); 1042 if (error == 0) { 1043 error = saloadunload(periph, FALSE); 1044 if (error == 0) { 1045 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 1046 } 1047 } 1048 break; 1049 1050 case MTNOP: /* no operation, sets status only */ 1051 case MTCACHE: /* enable controller cache */ 1052 case MTNOCACHE: /* disable controller cache */ 1053 error = 0; 1054 break; 1055 1056 case MTSETBSIZ: /* Set block size for device */ 1057 1058 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, count, 1059 0, 0, 0); 1060 if (error == 0) { 1061 softc->last_media_blksize = 1062 softc->media_blksize; 1063 softc->media_blksize = count; 1064 if (count) { 1065 softc->flags |= SA_FLAG_FIXED; 1066 if (powerof2(count)) { 1067 softc->blk_shift = 1068 ffs(count) - 1; 1069 softc->blk_mask = count - 1; 1070 } else { 1071 softc->blk_mask = ~0; 1072 softc->blk_shift = 0; 1073 } 1074 /* 1075 * Make the user's desire 'persistent'. 1076 */ 1077 softc->quirks &= ~SA_QUIRK_VARIABLE; 1078 softc->quirks |= SA_QUIRK_FIXED; 1079 } else { 1080 softc->flags &= ~SA_FLAG_FIXED; 1081 if (softc->max_blk == 0) { 1082 softc->max_blk = ~0; 1083 } 1084 softc->blk_shift = 0; 1085 if (softc->blk_gran != 0) { 1086 softc->blk_mask = 1087 softc->blk_gran - 1; 1088 } else { 1089 softc->blk_mask = 0; 1090 } 1091 /* 1092 * Make the user's desire 'persistent'. 1093 */ 1094 softc->quirks |= SA_QUIRK_VARIABLE; 1095 softc->quirks &= ~SA_QUIRK_FIXED; 1096 } 1097 } 1098 break; 1099 case MTSETDNSTY: /* Set density for device and mode */ 1100 if (count > UCHAR_MAX) { 1101 error = EINVAL; 1102 break; 1103 } else { 1104 error = sasetparams(periph, SA_PARAM_DENSITY, 1105 0, count, 0, 0); 1106 } 1107 break; 1108 case MTCOMP: /* enable compression */ 1109 /* 1110 * Some devices don't support compression, and 1111 * don't like it if you ask them for the 1112 * compression page. 1113 */ 1114 if ((softc->quirks & SA_QUIRK_NOCOMP) || 1115 (softc->flags & SA_FLAG_COMP_UNSUPP)) { 1116 error = ENODEV; 1117 break; 1118 } 1119 error = sasetparams(periph, SA_PARAM_COMPRESSION, 1120 0, 0, count, SF_NO_PRINT); 1121 break; 1122 default: 1123 error = EINVAL; 1124 } 1125 break; 1126 } 1127 case MTIOCIEOT: 1128 case MTIOCEEOT: 1129 error = 0; 1130 break; 1131 case MTIOCRDSPOS: 1132 error = sardpos(periph, 0, (u_int32_t *) arg); 1133 break; 1134 case MTIOCRDHPOS: 1135 error = sardpos(periph, 1, (u_int32_t *) arg); 1136 break; 1137 case MTIOCSLOCATE: 1138 error = sasetpos(periph, 0, (u_int32_t *) arg); 1139 break; 1140 case MTIOCHLOCATE: 1141 error = sasetpos(periph, 1, (u_int32_t *) arg); 1142 break; 1143 case MTIOCGETEOTMODEL: 1144 error = 0; 1145 if (softc->quirks & SA_QUIRK_1FM) 1146 mode = 1; 1147 else 1148 mode = 2; 1149 *((u_int32_t *) arg) = mode; 1150 break; 1151 case MTIOCSETEOTMODEL: 1152 error = 0; 1153 switch (*((u_int32_t *) arg)) { 1154 case 1: 1155 softc->quirks &= ~SA_QUIRK_2FM; 1156 softc->quirks |= SA_QUIRK_1FM; 1157 break; 1158 case 2: 1159 softc->quirks &= ~SA_QUIRK_1FM; 1160 softc->quirks |= SA_QUIRK_2FM; 1161 break; 1162 default: 1163 error = EINVAL; 1164 break; 1165 } 1166 break; 1167 default: 1168 error = cam_periph_ioctl(periph, cmd, arg, saerror); 1169 break; 1170 } 1171 if (didlockperiph) { 1172 cam_periph_unlock(periph); 1173 } 1174 return (error); 1175} 1176 1177static void 1178sainit(void) 1179{ 1180 cam_status status; 1181 struct cam_path *path; 1182 1183 /* 1184 * Create our extend array for storing the devices we attach to. 1185 */ 1186 saperiphs = cam_extend_new(); 1187 if (saperiphs == NULL) { 1188 printf("sa: Failed to alloc extend array!\n"); 1189 return; 1190 } 1191 1192 /* 1193 * Install a global async callback. 1194 */ 1195 status = xpt_create_path(&path, NULL, CAM_XPT_PATH_ID, 1196 CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD); 1197 1198 if (status == CAM_REQ_CMP) { 1199 /* Register the async callbacks of interrest */ 1200 struct ccb_setasync csa; /* 1201 * This is an immediate CCB, 1202 * so using the stack is OK 1203 */ 1204 xpt_setup_ccb(&csa.ccb_h, path, 5); 1205 csa.ccb_h.func_code = XPT_SASYNC_CB; 1206 csa.event_enable = AC_FOUND_DEVICE; 1207 csa.callback = saasync; 1208 csa.callback_arg = NULL; 1209 xpt_action((union ccb *)&csa); 1210 status = csa.ccb_h.status; 1211 xpt_free_path(path); 1212 } 1213 1214 if (status != CAM_REQ_CMP) { 1215 printf("sa: Failed to attach master async callback " 1216 "due to status 0x%x!\n", status); 1217 } 1218} 1219 1220static void 1221saoninvalidate(struct cam_periph *periph) 1222{ 1223 struct sa_softc *softc; 1224 struct buf *q_bp; 1225 struct ccb_setasync csa; 1226 int s; 1227 1228 softc = (struct sa_softc *)periph->softc; 1229 1230 /* 1231 * De-register any async callbacks. 1232 */ 1233 xpt_setup_ccb(&csa.ccb_h, periph->path, 1234 /* priority */ 5); 1235 csa.ccb_h.func_code = XPT_SASYNC_CB; 1236 csa.event_enable = 0; 1237 csa.callback = saasync; 1238 csa.callback_arg = periph; 1239 xpt_action((union ccb *)&csa); 1240 1241 softc->flags |= SA_FLAG_INVALID; 1242 1243 /* 1244 * Although the oninvalidate() routines are always called at 1245 * splsoftcam, we need to be at splbio() here to keep the buffer 1246 * queue from being modified while we traverse it. 1247 */ 1248 s = splbio(); 1249 1250 /* 1251 * Return all queued I/O with ENXIO. 1252 * XXX Handle any transactions queued to the card 1253 * with XPT_ABORT_CCB. 1254 */ 1255 while ((q_bp = bufq_first(&softc->buf_queue)) != NULL){ 1256 bufq_remove(&softc->buf_queue, q_bp); 1257 q_bp->b_resid = q_bp->b_bcount; 1258 q_bp->b_error = ENXIO; 1259 q_bp->b_flags |= B_ERROR; 1260 biodone(q_bp); 1261 } 1262 softc->queue_count = 0; 1263 splx(s); 1264 1265 xpt_print_path(periph->path); 1266 printf("lost device\n"); 1267 1268} 1269 1270static void 1271sacleanup(struct cam_periph *periph) 1272{ 1273 struct sa_softc *softc; 1274 int i; 1275 1276 softc = (struct sa_softc *)periph->softc; 1277 1278 devstat_remove_entry(&softc->device_stats); 1279 1280 destroy_dev(softc->devs.ctl_dev); 1281 destroy_dev(softc->devs.r_dev); 1282 destroy_dev(softc->devs.nr_dev); 1283 destroy_dev(softc->devs.er_dev); 1284 1285 for (i = 0; i < SA_NUM_MODES; i++) { 1286 destroy_dev(softc->devs.mode_devs[i].r_dev); 1287 destroy_dev(softc->devs.mode_devs[i].nr_dev); 1288 destroy_dev(softc->devs.mode_devs[i].er_dev); 1289 } 1290 1291 cam_extend_release(saperiphs, periph->unit_number); 1292 xpt_print_path(periph->path); 1293 printf("removing device entry\n"); 1294 free(softc, M_DEVBUF); 1295} 1296 1297static void 1298saasync(void *callback_arg, u_int32_t code, 1299 struct cam_path *path, void *arg) 1300{ 1301 struct cam_periph *periph; 1302 1303 periph = (struct cam_periph *)callback_arg; 1304 switch (code) { 1305 case AC_FOUND_DEVICE: 1306 { 1307 struct ccb_getdev *cgd; 1308 cam_status status; 1309 1310 cgd = (struct ccb_getdev *)arg; 1311 1312 if (SID_TYPE(&cgd->inq_data) != T_SEQUENTIAL) 1313 break; 1314 1315 /* 1316 * Allocate a peripheral instance for 1317 * this device and start the probe 1318 * process. 1319 */ 1320 status = cam_periph_alloc(saregister, saoninvalidate, 1321 sacleanup, sastart, 1322 "sa", CAM_PERIPH_BIO, cgd->ccb_h.path, 1323 saasync, AC_FOUND_DEVICE, cgd); 1324 1325 if (status != CAM_REQ_CMP 1326 && status != CAM_REQ_INPROG) 1327 printf("saasync: Unable to probe new device " 1328 "due to status 0x%x\n", status); 1329 break; 1330 } 1331 default: 1332 cam_periph_async(periph, code, path, arg); 1333 break; 1334 } 1335} 1336 1337static cam_status 1338saregister(struct cam_periph *periph, void *arg) 1339{ 1340 struct sa_softc *softc; 1341 struct ccb_setasync csa; 1342 struct ccb_getdev *cgd; 1343 caddr_t match; 1344 int i; 1345 1346 cgd = (struct ccb_getdev *)arg; 1347 if (periph == NULL) { 1348 printf("saregister: periph was NULL!!\n"); 1349 return (CAM_REQ_CMP_ERR); 1350 } 1351 1352 if (cgd == NULL) { 1353 printf("saregister: no getdev CCB, can't register device\n"); 1354 return (CAM_REQ_CMP_ERR); 1355 } 1356 1357 softc = (struct sa_softc *)malloc(sizeof (*softc), M_DEVBUF, M_NOWAIT); 1358 if (softc == NULL) { 1359 printf("saregister: Unable to probe new device. " 1360 "Unable to allocate softc\n"); 1361 return (CAM_REQ_CMP_ERR); 1362 } 1363 1364 bzero(softc, sizeof(*softc)); 1365 softc->scsi_rev = SID_ANSI_REV(&cgd->inq_data); 1366 softc->state = SA_STATE_NORMAL; 1367 softc->fileno = (daddr_t) -1; 1368 softc->blkno = (daddr_t) -1; 1369 1370 bufq_init(&softc->buf_queue); 1371 periph->softc = softc; 1372 cam_extend_set(saperiphs, periph->unit_number, periph); 1373 1374 /* 1375 * See if this device has any quirks. 1376 */ 1377 match = cam_quirkmatch((caddr_t)&cgd->inq_data, 1378 (caddr_t)sa_quirk_table, 1379 sizeof(sa_quirk_table)/sizeof(*sa_quirk_table), 1380 sizeof(*sa_quirk_table), scsi_inquiry_match); 1381 1382 if (match != NULL) { 1383 softc->quirks = ((struct sa_quirk_entry *)match)->quirks; 1384 softc->last_media_blksize = 1385 ((struct sa_quirk_entry *)match)->prefblk; 1386#ifdef CAMDEBUG 1387 xpt_print_path(periph->path); 1388 printf("found quirk entry %d\n", (int) 1389 (((struct sa_quirk_entry *) match) - sa_quirk_table)); 1390#endif 1391 } else 1392 softc->quirks = SA_QUIRK_NONE; 1393 1394 /* 1395 * The SA driver supports a blocksize, but we don't know the 1396 * blocksize until we media is inserted. So, set a flag to 1397 * indicate that the blocksize is unavailable right now. 1398 */ 1399 devstat_add_entry(&softc->device_stats, "sa", periph->unit_number, 0, 1400 DEVSTAT_BS_UNAVAILABLE, SID_TYPE(&cgd->inq_data) | 1401 DEVSTAT_TYPE_IF_SCSI, DEVSTAT_PRIORITY_TAPE); 1402 1403 softc->devs.ctl_dev = make_dev(&sa_cdevsw, SAMINOR(SA_CTLDEV, 1404 periph->unit_number, 0, SA_ATYPE_R), UID_ROOT, GID_OPERATOR, 1405 0660, "r%s%d.ctl", periph->periph_name, periph->unit_number); 1406 1407 softc->devs.r_dev = make_dev(&sa_cdevsw, SAMINOR(SA_NOT_CTLDEV, 1408 periph->unit_number, 0, SA_ATYPE_R), UID_ROOT, GID_OPERATOR, 1409 0660, "r%s%d", periph->periph_name, periph->unit_number); 1410 1411 softc->devs.nr_dev = make_dev(&sa_cdevsw, SAMINOR(SA_NOT_CTLDEV, 1412 periph->unit_number, 0, SA_ATYPE_NR), UID_ROOT, GID_OPERATOR, 1413 0660, "nr%s%d", periph->periph_name, periph->unit_number); 1414 1415 softc->devs.er_dev = make_dev(&sa_cdevsw, SAMINOR(SA_NOT_CTLDEV, 1416 periph->unit_number, 0, SA_ATYPE_ER), UID_ROOT, GID_OPERATOR, 1417 0660, "er%s%d", periph->periph_name, periph->unit_number); 1418 1419 for (i = 0; i < SA_NUM_MODES; i++) { 1420 1421 softc->devs.mode_devs[i].r_dev = make_dev(&sa_cdevsw, 1422 SAMINOR(SA_NOT_CTLDEV, periph->unit_number, i, SA_ATYPE_R), 1423 UID_ROOT, GID_OPERATOR, 0660, "r%s%d.%d", 1424 periph->periph_name, periph->unit_number, i); 1425 1426 softc->devs.mode_devs[i].nr_dev = make_dev(&sa_cdevsw, 1427 SAMINOR(SA_NOT_CTLDEV, periph->unit_number, i, SA_ATYPE_NR), 1428 UID_ROOT, GID_OPERATOR, 0660, "nr%s%d.%d", 1429 periph->periph_name, periph->unit_number, i); 1430 1431 1432 softc->devs.mode_devs[i].er_dev = make_dev(&sa_cdevsw, 1433 SAMINOR(SA_NOT_CTLDEV, periph->unit_number, i, SA_ATYPE_ER), 1434 UID_ROOT, GID_OPERATOR, 0660, "er%s%d.%d", 1435 periph->periph_name, periph->unit_number, i); 1436 } 1437 1438 /* 1439 * Add an async callback so that we get 1440 * notified if this device goes away. 1441 */ 1442 xpt_setup_ccb(&csa.ccb_h, periph->path, /* priority */ 5); 1443 csa.ccb_h.func_code = XPT_SASYNC_CB; 1444 csa.event_enable = AC_LOST_DEVICE; 1445 csa.callback = saasync; 1446 csa.callback_arg = periph; 1447 xpt_action((union ccb *)&csa); 1448 1449 xpt_announce_periph(periph, NULL); 1450 1451 return (CAM_REQ_CMP); 1452} 1453 1454static void 1455sastart(struct cam_periph *periph, union ccb *start_ccb) 1456{ 1457 struct sa_softc *softc; 1458 1459 softc = (struct sa_softc *)periph->softc; 1460 1461 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("sastart")); 1462 1463 switch (softc->state) { 1464 case SA_STATE_NORMAL: 1465 { 1466 /* Pull a buffer from the queue and get going on it */ 1467 struct buf *bp; 1468 int s; 1469 1470 /* 1471 * See if there is a buf with work for us to do.. 1472 */ 1473 s = splbio(); 1474 bp = bufq_first(&softc->buf_queue); 1475 if (periph->immediate_priority <= periph->pinfo.priority) { 1476 CAM_DEBUG_PRINT(CAM_DEBUG_SUBTRACE, 1477 ("queuing for immediate ccb\n")); 1478 start_ccb->ccb_h.ccb_type = SA_CCB_WAITING; 1479 SLIST_INSERT_HEAD(&periph->ccb_list, &start_ccb->ccb_h, 1480 periph_links.sle); 1481 periph->immediate_priority = CAM_PRIORITY_NONE; 1482 splx(s); 1483 wakeup(&periph->ccb_list); 1484 } else if (bp == NULL) { 1485 splx(s); 1486 xpt_release_ccb(start_ccb); 1487 } else if ((softc->flags & SA_FLAG_ERR_PENDING) != 0) { 1488 struct buf *done_bp; 1489 softc->queue_count--; 1490 bufq_remove(&softc->buf_queue, bp); 1491 bp->b_resid = bp->b_bcount; 1492 bp->b_flags |= B_ERROR; 1493 if ((softc->flags & SA_FLAG_EOM_PENDING) != 0) { 1494 if ((bp->b_flags & B_READ) == 0) 1495 bp->b_error = ENOSPC; 1496 else 1497 bp->b_error = EIO; 1498 } 1499 if ((softc->flags & SA_FLAG_EOF_PENDING) != 0) { 1500 bp->b_error = EIO; 1501 } 1502 if ((softc->flags & SA_FLAG_EIO_PENDING) != 0) { 1503 bp->b_error = EIO; 1504 } 1505 done_bp = bp; 1506 bp = bufq_first(&softc->buf_queue); 1507 /* 1508 * Only if we have no other buffers queued up 1509 * do we clear the pending error flag. 1510 */ 1511 if (bp == NULL) 1512 softc->flags &= ~SA_FLAG_ERR_PENDING; 1513 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 1514 ("sastart- ERR_PENDING now 0x%x, bp is %sNULL, " 1515 "%d more buffers queued up\n", 1516 (softc->flags & SA_FLAG_ERR_PENDING), 1517 (bp != NULL)? "not " : " ", softc->queue_count)); 1518 splx(s); 1519 xpt_release_ccb(start_ccb); 1520 biodone(done_bp); 1521 } else { 1522 u_int32_t length; 1523 1524 bufq_remove(&softc->buf_queue, bp); 1525 softc->queue_count--; 1526 1527 if ((softc->flags & SA_FLAG_FIXED) != 0) { 1528 if (softc->blk_shift != 0) { 1529 length = 1530 bp->b_bcount >> softc->blk_shift; 1531 } else if (softc->media_blksize != 0) { 1532 length = 1533 bp->b_bcount / softc->media_blksize; 1534 } else { 1535 bp->b_error = EIO; 1536 xpt_print_path(periph->path); 1537 printf("zero blocksize for " 1538 "FIXED length writes?\n"); 1539 splx(s); 1540 biodone(bp); 1541 break; 1542 } 1543 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 1544 ("Fixed Record Count is %d\n", length)); 1545 } else { 1546 length = bp->b_bcount; 1547 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_INFO, 1548 ("Variable Record Count is %d\n", length)); 1549 } 1550 devstat_start_transaction(&softc->device_stats); 1551 /* 1552 * Some people have theorized that we should 1553 * suppress illegal length indication if we are 1554 * running in variable block mode so that we don't 1555 * have to request sense every time our requested 1556 * block size is larger than the written block. 1557 * The residual information from the ccb allows 1558 * us to identify this situation anyway. The only 1559 * problem with this is that we will not get 1560 * information about blocks that are larger than 1561 * our read buffer unless we set the block size 1562 * in the mode page to something other than 0. 1563 * 1564 * I believe that this is a non-issue. If user apps 1565 * don't adjust their read size to match our record 1566 * size, that's just life. Anyway, the typical usage 1567 * would be to issue, e.g., 64KB reads and occasionally 1568 * have to do deal with 512 byte or 1KB intermediate 1569 * records. 1570 */ 1571 softc->dsreg = (bp->b_flags & B_READ)? 1572 MTIO_DSREG_RD : MTIO_DSREG_WR; 1573 scsi_sa_read_write(&start_ccb->csio, 0, sadone, 1574 MSG_SIMPLE_Q_TAG, (bp->b_flags & B_READ) != 0, 1575 FALSE, (softc->flags & SA_FLAG_FIXED) != 0, 1576 length, bp->b_data, bp->b_bcount, SSD_FULL_SIZE, 1577 120 * 60 * 1000); 1578 start_ccb->ccb_h.ccb_type = SA_CCB_BUFFER_IO; 1579 start_ccb->ccb_h.ccb_bp = bp; 1580 bp = bufq_first(&softc->buf_queue); 1581 splx(s); 1582 xpt_action(start_ccb); 1583 } 1584 1585 if (bp != NULL) { 1586 /* Have more work to do, so ensure we stay scheduled */ 1587 xpt_schedule(periph, 1); 1588 } 1589 break; 1590 } 1591 case SA_STATE_ABNORMAL: 1592 default: 1593 panic("state 0x%x in sastart", softc->state); 1594 break; 1595 } 1596} 1597 1598 1599static void 1600sadone(struct cam_periph *periph, union ccb *done_ccb) 1601{ 1602 struct sa_softc *softc; 1603 struct ccb_scsiio *csio; 1604 1605 softc = (struct sa_softc *)periph->softc; 1606 csio = &done_ccb->csio; 1607 switch (csio->ccb_h.ccb_type) { 1608 case SA_CCB_BUFFER_IO: 1609 { 1610 struct buf *bp; 1611 int error; 1612 1613 softc->dsreg = MTIO_DSREG_REST; 1614 bp = (struct buf *)done_ccb->ccb_h.ccb_bp; 1615 error = 0; 1616 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 1617 if ((error = saerror(done_ccb, 0, 0)) == ERESTART) { 1618 /* 1619 * A retry was scheduled, so just return. 1620 */ 1621 return; 1622 } 1623 } 1624 1625 if (error == EIO) { 1626 int s; 1627 struct buf *q_bp; 1628 1629 /* 1630 * Catastrophic error. Mark the tape as frozen 1631 * (we no longer know tape position). 1632 * 1633 * Return all queued I/O with EIO, and unfreeze 1634 * our queue so that future transactions that 1635 * attempt to fix this problem can get to the 1636 * device. 1637 * 1638 */ 1639 1640 s = splbio(); 1641 softc->flags |= SA_FLAG_TAPE_FROZEN; 1642 while ((q_bp = bufq_first(&softc->buf_queue)) != NULL) { 1643 bufq_remove(&softc->buf_queue, q_bp); 1644 q_bp->b_resid = q_bp->b_bcount; 1645 q_bp->b_error = EIO; 1646 q_bp->b_flags |= B_ERROR; 1647 biodone(q_bp); 1648 } 1649 splx(s); 1650 } 1651 if (error != 0) { 1652 bp->b_resid = bp->b_bcount; 1653 bp->b_error = error; 1654 bp->b_flags |= B_ERROR; 1655 /* 1656 * In the error case, position is updated in saerror. 1657 */ 1658 } else { 1659 bp->b_resid = csio->resid; 1660 bp->b_error = 0; 1661 if (csio->resid != 0) { 1662 bp->b_flags |= B_ERROR; 1663 } 1664 if ((bp->b_flags & B_READ) == 0) { 1665 softc->flags |= SA_FLAG_TAPE_WRITTEN; 1666 softc->filemarks = 0; 1667 } 1668 if (softc->blkno != (daddr_t) -1) { 1669 if ((softc->flags & SA_FLAG_FIXED) != 0) { 1670 u_int32_t l; 1671 if (softc->blk_shift != 0) { 1672 l = bp->b_bcount >> 1673 softc->blk_shift; 1674 } else { 1675 l = bp->b_bcount / 1676 softc->media_blksize; 1677 } 1678 softc->blkno += (daddr_t) l; 1679 } else { 1680 softc->blkno++; 1681 } 1682 } 1683 } 1684 /* 1685 * If we had an error (immediate or pending), 1686 * release the device queue now. 1687 */ 1688 if (error || (softc->flags & SA_FLAG_ERR_PENDING)) 1689 cam_release_devq(done_ccb->ccb_h.path, 0, 0, 0, 0); 1690#ifdef CAMDEBUG 1691 if (error || bp->b_resid) { 1692 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 1693 ("error %d resid %ld count %ld\n", error, 1694 bp->b_resid, bp->b_bcount)); 1695 } 1696#endif 1697 devstat_end_transaction_buf(&softc->device_stats, bp); 1698 biodone(bp); 1699 break; 1700 } 1701 case SA_CCB_WAITING: 1702 { 1703 /* Caller will release the CCB */ 1704 wakeup(&done_ccb->ccb_h.cbfcnp); 1705 return; 1706 } 1707 } 1708 xpt_release_ccb(done_ccb); 1709} 1710 1711/* 1712 * Mount the tape (make sure it's ready for I/O). 1713 */ 1714static int 1715samount(struct cam_periph *periph, int oflags, dev_t dev) 1716{ 1717 struct sa_softc *softc; 1718 union ccb *ccb; 1719 int error; 1720 1721 /* 1722 * oflags can be checked for 'kind' of open (read-only check) - later 1723 * dev can be checked for a control-mode or compression open - later 1724 */ 1725 UNUSED_PARAMETER(oflags); 1726 UNUSED_PARAMETER(dev); 1727 1728 1729 softc = (struct sa_softc *)periph->softc; 1730 1731 /* 1732 * This should determine if something has happend since the last 1733 * open/mount that would invalidate the mount. We do *not* want 1734 * to retry this command- we just want the status. But we only 1735 * do this if we're mounted already- if we're not mounted, 1736 * we don't care about the unit read state and can instead use 1737 * this opportunity to attempt to reserve the tape unit. 1738 */ 1739 1740 if (softc->flags & SA_FLAG_TAPE_MOUNTED) { 1741 ccb = cam_periph_getccb(periph, 1); 1742 scsi_test_unit_ready(&ccb->csio, 0, sadone, 1743 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, 5 * 60 * 1000); 1744 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1745 &softc->device_stats); 1746 QFRLS(ccb); 1747 if (error == ENXIO) { 1748 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 1749 scsi_test_unit_ready(&ccb->csio, 0, sadone, 1750 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, 5 * 60 * 1000); 1751 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1752 &softc->device_stats); 1753 QFRLS(ccb); 1754 } else if (error) { 1755 /* 1756 * We don't need to freeze the tape because we 1757 * will now attempt to rewind/load it. 1758 */ 1759 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 1760 if (CAM_DEBUGGED(ccb->ccb_h.path, CAM_DEBUG_INFO)) { 1761 xpt_print_path(ccb->ccb_h.path); 1762 printf("error %d on TUR in samount\n", error); 1763 } 1764 } 1765 } else { 1766 error = sareservereleaseunit(periph, TRUE); 1767 if (error) { 1768 return (error); 1769 } 1770 ccb = cam_periph_getccb(periph, 1); 1771 scsi_test_unit_ready(&ccb->csio, 0, sadone, 1772 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, 5 * 60 * 1000); 1773 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1774 &softc->device_stats); 1775 QFRLS(ccb); 1776 } 1777 1778 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) { 1779 struct scsi_read_block_limits_data *rblim = NULL; 1780 int comp_enabled, comp_supported; 1781 u_int8_t write_protect, guessing = 0; 1782 1783 /* 1784 * Clear out old state. 1785 */ 1786 softc->flags &= ~(SA_FLAG_TAPE_WP|SA_FLAG_TAPE_WRITTEN| 1787 SA_FLAG_ERR_PENDING|SA_FLAG_COMP_ENABLED| 1788 SA_FLAG_COMP_SUPP|SA_FLAG_COMP_UNSUPP); 1789 softc->filemarks = 0; 1790 1791 /* 1792 * *Very* first off, make sure we're loaded to BOT. 1793 */ 1794 scsi_load_unload(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 1795 FALSE, FALSE, 1, SSD_FULL_SIZE, REWIND_TIMEOUT); 1796 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1797 &softc->device_stats); 1798 QFRLS(ccb); 1799 1800 /* 1801 * In case this doesn't work, do a REWIND instead 1802 */ 1803 if (error) { 1804 scsi_rewind(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, 1805 FALSE, SSD_FULL_SIZE, REWIND_TIMEOUT); 1806 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1807 &softc->device_stats); 1808 QFRLS(ccb); 1809 } 1810 if (error) { 1811 xpt_release_ccb(ccb); 1812 goto exit; 1813 } 1814 1815 /* 1816 * Do a dummy test read to force access to the 1817 * media so that the drive will really know what's 1818 * there. We actually don't really care what the 1819 * blocksize on tape is and don't expect to really 1820 * read a full record. 1821 */ 1822 rblim = (struct scsi_read_block_limits_data *) 1823 malloc(8192, M_TEMP, M_WAITOK); 1824 if (rblim == NULL) { 1825 xpt_print_path(ccb->ccb_h.path); 1826 printf("no memory for test read\n"); 1827 xpt_release_ccb(ccb); 1828 error = ENOMEM; 1829 goto exit; 1830 } 1831 scsi_sa_read_write(&ccb->csio, 0, sadone, MSG_SIMPLE_Q_TAG, 1, 1832 FALSE, 0, 8192, (void *) rblim, 8192, SSD_FULL_SIZE, 1833 120 * 60 * 1000); 1834 (void) cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1835 &softc->device_stats); 1836 QFRLS(ccb); 1837 scsi_rewind(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, 1838 FALSE, SSD_FULL_SIZE, REWIND_TIMEOUT); 1839 error = cam_periph_runccb(ccb, saerror, 0, 1840 SF_NO_PRINT | SF_RETRY_SELTO | SF_RETRY_UA, 1841 &softc->device_stats); 1842 QFRLS(ccb); 1843 if (error) { 1844 xpt_print_path(ccb->ccb_h.path); 1845 printf("unable to rewind after test read\n"); 1846 xpt_release_ccb(ccb); 1847 goto exit; 1848 } 1849 1850 /* 1851 * Next off, determine block limits. 1852 */ 1853 scsi_read_block_limits(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, 1854 rblim, SSD_FULL_SIZE, 5000); 1855 1856 error = cam_periph_runccb(ccb, saerror, 0, 1857 SF_NO_PRINT | SF_RETRY_UA | SF_RETRY_SELTO, 1858 &softc->device_stats); 1859 QFRLS(ccb); 1860 xpt_release_ccb(ccb); 1861 1862 if (error != 0) { 1863 /* 1864 * If it's less than SCSI-2, READ BLOCK LIMITS is not 1865 * a MANDATORY command. Anyway- it doesn't matter- 1866 * we can proceed anyway. 1867 */ 1868 softc->blk_gran = 0; 1869 softc->max_blk = ~0; 1870 softc->min_blk = 0; 1871 } else { 1872 if (softc->scsi_rev >= SCSI_REV_3) { 1873 softc->blk_gran = RBL_GRAN(rblim); 1874 } else { 1875 softc->blk_gran = 0; 1876 } 1877 /* 1878 * We take max_blk == min_blk to mean a default to 1879 * fixed mode- but note that whatever we get out of 1880 * sagetparams below will actually determine whether 1881 * we are actually *in* fixed mode. 1882 */ 1883 softc->max_blk = scsi_3btoul(rblim->maximum); 1884 softc->min_blk = scsi_2btoul(rblim->minimum); 1885 1886 1887 } 1888 /* 1889 * Next, perform a mode sense to determine 1890 * current density, blocksize, compression etc. 1891 */ 1892 error = sagetparams(periph, SA_PARAM_ALL, 1893 &softc->media_blksize, 1894 &softc->media_density, 1895 &softc->media_numblks, 1896 &softc->buffer_mode, &write_protect, 1897 &softc->speed, &comp_supported, 1898 &comp_enabled, &softc->comp_algorithm, 1899 NULL); 1900 1901 if (error != 0) { 1902 /* 1903 * We could work a little harder here. We could 1904 * adjust our attempts to get information. It 1905 * might be an ancient tape drive. If someone 1906 * nudges us, we'll do that. 1907 */ 1908 goto exit; 1909 } 1910 1911 /* 1912 * If no quirk has determined that this is a device that is 1913 * preferred to be in fixed or variable mode, now is the time 1914 * to find out. 1915 */ 1916 if ((softc->quirks & (SA_QUIRK_FIXED|SA_QUIRK_VARIABLE)) == 0) { 1917 guessing = 1; 1918 /* 1919 * This could be expensive to find out. Luckily we 1920 * only need to do this once. If we start out in 1921 * 'default' mode, try and set ourselves to one 1922 * of the densities that would determine a wad 1923 * of other stuff. Go from highest to lowest. 1924 */ 1925 if (softc->media_density == SCSI_DEFAULT_DENSITY) { 1926 int i; 1927 static u_int8_t ctry[] = { 1928 SCSI_DENSITY_HALFINCH_PE, 1929 SCSI_DENSITY_HALFINCH_6250C, 1930 SCSI_DENSITY_HALFINCH_6250, 1931 SCSI_DENSITY_HALFINCH_1600, 1932 SCSI_DENSITY_HALFINCH_800, 1933 SCSI_DENSITY_QIC_4GB, 1934 SCSI_DENSITY_QIC_2GB, 1935 SCSI_DENSITY_QIC_525_320, 1936 SCSI_DENSITY_QIC_150, 1937 SCSI_DENSITY_QIC_120, 1938 SCSI_DENSITY_QIC_24, 1939 SCSI_DENSITY_QIC_11_9TRK, 1940 SCSI_DENSITY_QIC_11_4TRK, 1941 SCSI_DENSITY_QIC_1320, 1942 SCSI_DENSITY_QIC_3080, 1943 0 1944 }; 1945 for (i = 0; ctry[i]; i++) { 1946 error = sasetparams(periph, 1947 SA_PARAM_DENSITY, 0, ctry[i], 1948 0, SF_NO_PRINT); 1949 if (error == 0) { 1950 softc->media_density = ctry[i]; 1951 break; 1952 } 1953 } 1954 } 1955 switch (softc->media_density) { 1956 case SCSI_DENSITY_QIC_11_4TRK: 1957 case SCSI_DENSITY_QIC_11_9TRK: 1958 case SCSI_DENSITY_QIC_24: 1959 case SCSI_DENSITY_QIC_120: 1960 case SCSI_DENSITY_QIC_150: 1961 case SCSI_DENSITY_QIC_1320: 1962 case SCSI_DENSITY_QIC_3080: 1963 softc->quirks &= ~SA_QUIRK_2FM; 1964 softc->quirks |= SA_QUIRK_FIXED|SA_QUIRK_1FM; 1965 softc->last_media_blksize = 512; 1966 break; 1967 case SCSI_DENSITY_QIC_4GB: 1968 case SCSI_DENSITY_QIC_2GB: 1969 case SCSI_DENSITY_QIC_525_320: 1970 softc->quirks &= ~SA_QUIRK_2FM; 1971 softc->quirks |= SA_QUIRK_FIXED|SA_QUIRK_1FM; 1972 softc->last_media_blksize = 1024; 1973 break; 1974 default: 1975 softc->last_media_blksize = 1976 softc->media_blksize; 1977 softc->quirks |= SA_QUIRK_VARIABLE; 1978 break; 1979 } 1980 } 1981 1982 /* 1983 * If no quirk has determined that this is a device that needs 1984 * to have 2 Filemarks at EOD, now is the time to find out. 1985 */ 1986 1987 if ((softc->quirks & SA_QUIRK_2FM) == 0) { 1988 switch (softc->media_density) { 1989 case SCSI_DENSITY_HALFINCH_800: 1990 case SCSI_DENSITY_HALFINCH_1600: 1991 case SCSI_DENSITY_HALFINCH_6250: 1992 case SCSI_DENSITY_HALFINCH_6250C: 1993 case SCSI_DENSITY_HALFINCH_PE: 1994 softc->quirks &= ~SA_QUIRK_1FM; 1995 softc->quirks |= SA_QUIRK_2FM; 1996 break; 1997 default: 1998 break; 1999 } 2000 } 2001 2002 /* 2003 * Now validate that some info we got makes sense. 2004 */ 2005 if ((softc->max_blk < softc->media_blksize) || 2006 (softc->min_blk > softc->media_blksize && 2007 softc->media_blksize)) { 2008 xpt_print_path(ccb->ccb_h.path); 2009 printf("BLOCK LIMITS (%d..%d) could not match current " 2010 "block settings (%d)- adjusting\n", softc->min_blk, 2011 softc->max_blk, softc->media_blksize); 2012 softc->max_blk = softc->min_blk = 2013 softc->media_blksize; 2014 } 2015 2016 /* 2017 * Now put ourselves into the right frame of mind based 2018 * upon quirks... 2019 */ 2020tryagain: 2021 /* 2022 * If we want to be in FIXED mode and our current blocksize 2023 * is not equal to our last blocksize (if nonzero), try and 2024 * set ourselves to this last blocksize (as the 'preferred' 2025 * block size). The initial quirkmatch at registry sets the 2026 * initial 'last' blocksize. If, for whatever reason, this 2027 * 'last' blocksize is zero, set the blocksize to 512, 2028 * or min_blk if that's larger. 2029 */ 2030 if ((softc->quirks & SA_QUIRK_FIXED) && 2031 (softc->media_blksize != softc->last_media_blksize)) { 2032 softc->media_blksize = softc->last_media_blksize; 2033 if (softc->media_blksize == 0) { 2034 softc->media_blksize = 512; 2035 if (softc->media_blksize < softc->min_blk) { 2036 softc->media_blksize = softc->min_blk; 2037 } 2038 } 2039 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, 2040 softc->media_blksize, 0, 0, SF_NO_PRINT); 2041 if (error) { 2042 xpt_print_path(ccb->ccb_h.path); 2043 printf("unable to set fixed blocksize to %d\n", 2044 softc->media_blksize); 2045 goto exit; 2046 } 2047 } 2048 2049 if ((softc->quirks & SA_QUIRK_VARIABLE) && 2050 (softc->media_blksize != 0)) { 2051 softc->last_media_blksize = softc->media_blksize; 2052 softc->media_blksize = 0; 2053 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, 2054 0, 0, 0, SF_NO_PRINT); 2055 if (error) { 2056 /* 2057 * If this fails and we were guessing, just 2058 * assume that we got it wrong and go try 2059 * fixed block mode. Don't even check against 2060 * density code at this point. 2061 */ 2062 if (guessing) { 2063 softc->quirks &= ~SA_QUIRK_VARIABLE; 2064 softc->quirks |= SA_QUIRK_FIXED; 2065 if (softc->last_media_blksize == 0) 2066 softc->last_media_blksize = 512; 2067 goto tryagain; 2068 } 2069 xpt_print_path(ccb->ccb_h.path); 2070 printf("unable to set variable blocksize\n"); 2071 goto exit; 2072 } 2073 } 2074 2075 /* 2076 * Now that we have the current block size, 2077 * set up some parameters for sastart's usage. 2078 */ 2079 if (softc->media_blksize) { 2080 softc->flags |= SA_FLAG_FIXED; 2081 if (powerof2(softc->media_blksize)) { 2082 softc->blk_shift = 2083 ffs(softc->media_blksize) - 1; 2084 softc->blk_mask = softc->media_blksize - 1; 2085 } else { 2086 softc->blk_mask = ~0; 2087 softc->blk_shift = 0; 2088 } 2089 } else { 2090 /* 2091 * The SCSI-3 spec allows 0 to mean "unspecified". 2092 * The SCSI-1 spec allows 0 to mean 'infinite'. 2093 * 2094 * Either works here. 2095 */ 2096 if (softc->max_blk == 0) { 2097 softc->max_blk = ~0; 2098 } 2099 softc->blk_shift = 0; 2100 if (softc->blk_gran != 0) { 2101 softc->blk_mask = softc->blk_gran - 1; 2102 } else { 2103 softc->blk_mask = 0; 2104 } 2105 } 2106 2107 if (write_protect) 2108 softc->flags |= SA_FLAG_TAPE_WP; 2109 2110 if (comp_supported) { 2111 if (softc->saved_comp_algorithm == 0) 2112 softc->saved_comp_algorithm = 2113 softc->comp_algorithm; 2114 softc->flags |= SA_FLAG_COMP_SUPP; 2115 if (comp_enabled) 2116 softc->flags |= SA_FLAG_COMP_ENABLED; 2117 } else 2118 softc->flags |= SA_FLAG_COMP_UNSUPP; 2119 2120 if (softc->buffer_mode == SMH_SA_BUF_MODE_NOBUF) { 2121 error = sasetparams(periph, SA_PARAM_BUFF_MODE, 0, 2122 0, 0, SF_NO_PRINT); 2123 if (error == 0) 2124 softc->buffer_mode = SMH_SA_BUF_MODE_SIBUF; 2125 } 2126 2127 2128 if (error == 0) { 2129 softc->flags |= SA_FLAG_TAPE_MOUNTED; 2130 } 2131exit: 2132 if (rblim != NULL) 2133 free(rblim, M_TEMP); 2134 2135 if (error != 0) { 2136 softc->dsreg = MTIO_DSREG_NIL; 2137 } else { 2138 softc->fileno = softc->blkno = 0; 2139 softc->dsreg = MTIO_DSREG_REST; 2140 } 2141#ifdef SA_1FM_AT_EOD 2142 if ((softc->quirks & SA_QUIRK_2FM) == 0) 2143 softc->quirks |= SA_QUIRK_1FM; 2144#else 2145 if ((softc->quirks & SA_QUIRK_1FM) == 0) 2146 softc->quirks |= SA_QUIRK_2FM; 2147#endif 2148 } else 2149 xpt_release_ccb(ccb); 2150 2151 /* 2152 * If we return an error, we're not mounted any more, 2153 * so release any device reservation. 2154 */ 2155 if (error != 0) { 2156 (void) sareservereleaseunit(periph, FALSE); 2157 } 2158 return (error); 2159} 2160 2161static int 2162sacheckeod(struct cam_periph *periph) 2163{ 2164 int error; 2165 int markswanted; 2166 struct sa_softc *softc; 2167 2168 softc = (struct sa_softc *)periph->softc; 2169 markswanted = 0; 2170 2171 if ((softc->flags & SA_FLAG_TAPE_WRITTEN) != 0) { 2172 markswanted++; 2173 if (softc->quirks & SA_QUIRK_2FM) 2174 markswanted++; 2175 } 2176 2177 if (softc->filemarks < markswanted) { 2178 markswanted -= softc->filemarks; 2179 error = sawritefilemarks(periph, markswanted, FALSE); 2180 } else { 2181 error = 0; 2182 } 2183 return (error); 2184} 2185 2186static int 2187saerror(union ccb *ccb, u_int32_t cflgs, u_int32_t sflgs) 2188{ 2189 static const char *toobig = 2190 "%d-byte tape record bigger than suplied buffer\n"; 2191 struct cam_periph *periph; 2192 struct sa_softc *softc; 2193 struct ccb_scsiio *csio; 2194 struct scsi_sense_data *sense; 2195 u_int32_t resid = 0; 2196 int32_t info = 0; 2197 int error_code, sense_key, asc, ascq; 2198 int error, defer_action; 2199 2200 periph = xpt_path_periph(ccb->ccb_h.path); 2201 softc = (struct sa_softc *)periph->softc; 2202 csio = &ccb->csio; 2203 sense = &csio->sense_data; 2204 scsi_extract_sense(sense, &error_code, &sense_key, &asc, &ascq); 2205 error = 0; 2206 2207 /* 2208 * Calculate/latch up, any residuals... 2209 */ 2210 if ((csio->ccb_h.status & CAM_STATUS_MASK) == CAM_SCSI_STATUS_ERROR) { 2211 if ((sense->error_code & SSD_ERRCODE_VALID) != 0) { 2212 info = (int32_t) scsi_4btoul(sense->info); 2213 resid = info; 2214 if ((softc->flags & SA_FLAG_FIXED) != 0) 2215 resid *= softc->media_blksize; 2216 } else { 2217 resid = csio->dxfer_len; 2218 info = resid; 2219 if ((softc->flags & SA_FLAG_FIXED) != 0) { 2220 if (softc->media_blksize) 2221 info /= softc->media_blksize; 2222 } 2223 } 2224 if (csio->ccb_h.ccb_type == SA_CCB_BUFFER_IO) { 2225 bcopy((caddr_t) sense, (caddr_t) &softc->last_io_sense, 2226 sizeof (struct scsi_sense_data)); 2227 bcopy(csio->cdb_io.cdb_bytes, softc->last_io_cdb, 2228 (int) csio->cdb_len); 2229 softc->last_io_resid = resid; 2230 } else { 2231 bcopy((caddr_t) sense, (caddr_t) &softc->last_ctl_sense, 2232 sizeof (struct scsi_sense_data)); 2233 bcopy(csio->cdb_io.cdb_bytes, softc->last_ctl_cdb, 2234 (int) csio->cdb_len); 2235 softc->last_ctl_resid = resid; 2236 } 2237 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("Key 0x%x ASC/ASCQ 2238 0x%x 0x%x flags 0x%x resid %d dxfer_len %d\n", sense_key, 2239 asc, ascq, sense->flags & ~SSD_KEY_RESERVED, resid, 2240 csio->dxfer_len)); 2241 } else { 2242 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("Cam Status 0x%x\n", 2243 csio->ccb_h.status & CAM_STATUS_MASK)); 2244 } 2245 2246 /* 2247 * If it's neither a SCSI Check Condition Error nor a non-read/write 2248 * command, let the common code deal with it the error setting. 2249 */ 2250 if ((csio->ccb_h.status & CAM_STATUS_MASK) != CAM_SCSI_STATUS_ERROR || 2251 (csio->ccb_h.ccb_type == SA_CCB_WAITING)) { 2252 return (cam_periph_error(ccb, cflgs, sflgs, &softc->saved_ccb)); 2253 } 2254 2255 /* 2256 * Calculate whether we'll defer action. 2257 */ 2258 2259 if (resid > 0 && resid < csio->dxfer_len && 2260 (softc->flags & SA_FLAG_FIXED) != 0) { 2261 defer_action = TRUE; 2262 } else { 2263 defer_action = FALSE; 2264 } 2265 2266 /* 2267 * Handle filemark, end of tape, mismatched record sizes.... 2268 * From this point out, we're only handling read/write cases. 2269 * Handle writes && reads differently. 2270 */ 2271 2272 if (csio->cdb_io.cdb_bytes[0] == SA_WRITE) { 2273 if (sense->flags & SSD_FILEMARK) { 2274 xpt_print_path(csio->ccb_h.path); 2275 printf("filemark detected on write?\n"); 2276 if (softc->fileno != (daddr_t) -1) { 2277 softc->fileno++; 2278 softc->blkno = 0; 2279 } 2280 } 2281 if (sense->flags & SSD_EOM) { 2282 csio->resid = resid; 2283 if (defer_action) { 2284 error = -1; 2285 softc->flags |= SA_FLAG_EOM_PENDING; 2286 } else { 2287 error = ENOSPC; 2288 } 2289 } 2290 } else { 2291 if (sense_key == SSD_KEY_BLANK_CHECK) { 2292 csio->resid = resid; 2293 if (defer_action) { 2294 error = -1; 2295 softc->flags |= SA_FLAG_EOM_PENDING; 2296 } else { 2297 error = EIO; 2298 } 2299 } 2300 if (sense->flags & SSD_FILEMARK) { 2301 csio->resid = resid; 2302 if (defer_action) { 2303 error = -1; 2304 softc->flags |= SA_FLAG_EOF_PENDING; 2305 } 2306 /* 2307 * Unconditionally, if we detected a filemark on a read, 2308 * mark that we've run moved a file ahead. 2309 */ 2310 if (softc->fileno != (daddr_t) -1) { 2311 softc->fileno++; 2312 softc->blkno = 0; 2313 } 2314 } 2315 } 2316 /* 2317 * Incorrect Length usually applies to read, but can apply to writes. 2318 */ 2319 if (error == 0 && (sense->flags & SSD_ILI)) { 2320 if (info < 0) { 2321 xpt_print_path(csio->ccb_h.path); 2322 printf(toobig, csio->dxfer_len - info); 2323 csio->resid = csio->dxfer_len; 2324 error = EIO; 2325 } else { 2326 csio->resid = resid; 2327 if ((softc->flags & SA_FLAG_FIXED) != 0) { 2328 if (defer_action) 2329 softc->flags |= SA_FLAG_EIO_PENDING; 2330 else 2331 error = EIO; 2332 } 2333 /* 2334 * Bump the block number if we hadn't seen a filemark. 2335 * Do this independent of errors (we've moved anyway). 2336 */ 2337 if ((sense->flags & SSD_FILEMARK) == 0) { 2338 if (softc->blkno != (daddr_t) -1) { 2339 softc->blkno++; 2340 } 2341 } 2342 } 2343 } 2344 if (error == 0) 2345 return (cam_periph_error(ccb, cflgs, sflgs, &softc->saved_ccb)); 2346 2347 if (error == -1) 2348 return (0); 2349 else 2350 return (error); 2351} 2352 2353static int 2354sagetparams(struct cam_periph *periph, sa_params params_to_get, 2355 u_int32_t *blocksize, u_int8_t *density, u_int32_t *numblocks, 2356 int *buff_mode, u_int8_t *write_protect, u_int8_t *speed, 2357 int *comp_supported, int *comp_enabled, u_int32_t *comp_algorithm, 2358 sa_comp_t *tcs) 2359{ 2360 union ccb *ccb; 2361 void *mode_buffer; 2362 struct scsi_mode_header_6 *mode_hdr; 2363 struct scsi_mode_blk_desc *mode_blk; 2364 int mode_buffer_len; 2365 struct sa_softc *softc; 2366 u_int8_t cpage; 2367 int error; 2368 cam_status status; 2369 2370 softc = (struct sa_softc *)periph->softc; 2371 ccb = cam_periph_getccb(periph, 1); 2372 cpage = SA_DATA_COMPRESSION_PAGE; 2373 2374retry: 2375 mode_buffer_len = sizeof(*mode_hdr) + sizeof(*mode_blk); 2376 2377 if (params_to_get & SA_PARAM_COMPRESSION) { 2378 if (softc->quirks & SA_QUIRK_NOCOMP) { 2379 *comp_supported = FALSE; 2380 params_to_get &= ~SA_PARAM_COMPRESSION; 2381 } else 2382 mode_buffer_len += sizeof (sa_comp_t); 2383 } 2384 2385 mode_buffer = malloc(mode_buffer_len, M_TEMP, M_WAITOK); 2386 bzero(mode_buffer, mode_buffer_len); 2387 mode_hdr = (struct scsi_mode_header_6 *)mode_buffer; 2388 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 2389 2390 /* it is safe to retry this */ 2391 scsi_mode_sense(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 2392 SMS_PAGE_CTRL_CURRENT, (params_to_get & SA_PARAM_COMPRESSION) ? 2393 cpage : SMS_VENDOR_SPECIFIC_PAGE, mode_buffer, mode_buffer_len, 2394 SSD_FULL_SIZE, 5000); 2395 2396 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2397 &softc->device_stats); 2398 QFRLS(ccb); 2399 2400 status = ccb->ccb_h.status & CAM_STATUS_MASK; 2401 2402 if (error == EINVAL && (params_to_get & SA_PARAM_COMPRESSION) != 0) { 2403 /* 2404 * Hmm. Let's see if we can try another page... 2405 * If we've already done that, give up on compression 2406 * for this device and remember this for the future 2407 * and attempt the request without asking for compression 2408 * info. 2409 */ 2410 if (cpage == SA_DATA_COMPRESSION_PAGE) { 2411 cpage = SA_DEVICE_CONFIGURATION_PAGE; 2412 goto retry; 2413 } 2414 softc->quirks |= SA_QUIRK_NOCOMP; 2415 free(mode_buffer, M_TEMP); 2416 goto retry; 2417 } else if (status == CAM_SCSI_STATUS_ERROR) { 2418 /* Tell the user about the fatal error. */ 2419 scsi_sense_print(&ccb->csio); 2420 goto sagetparamsexit; 2421 } 2422 2423 /* 2424 * If the user only wants the compression information, and 2425 * the device doesn't send back the block descriptor, it's 2426 * no big deal. If the user wants more than just 2427 * compression, though, and the device doesn't pass back the 2428 * block descriptor, we need to send another mode sense to 2429 * get the block descriptor. 2430 */ 2431 if ((mode_hdr->blk_desc_len == 0) && 2432 (params_to_get & SA_PARAM_COMPRESSION) && 2433 (params_to_get & ~(SA_PARAM_COMPRESSION))) { 2434 2435 /* 2436 * Decrease the mode buffer length by the size of 2437 * the compression page, to make sure the data 2438 * there doesn't get overwritten. 2439 */ 2440 mode_buffer_len -= sizeof (sa_comp_t); 2441 2442 /* 2443 * Now move the compression page that we presumably 2444 * got back down the memory chunk a little bit so 2445 * it doesn't get spammed. 2446 */ 2447 bcopy(&mode_hdr[0], &mode_hdr[1], sizeof (sa_comp_t)); 2448 bzero(&mode_hdr[0], sizeof (mode_hdr[0])); 2449 2450 /* 2451 * Now, we issue another mode sense and just ask 2452 * for the block descriptor, etc. 2453 */ 2454 2455 scsi_mode_sense(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 2456 SMS_PAGE_CTRL_CURRENT, SMS_VENDOR_SPECIFIC_PAGE, 2457 mode_buffer, mode_buffer_len, SSD_FULL_SIZE, 5000); 2458 2459 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2460 &softc->device_stats); 2461 QFRLS(ccb); 2462 2463 if (error != 0) 2464 goto sagetparamsexit; 2465 } 2466 2467 if (params_to_get & SA_PARAM_BLOCKSIZE) 2468 *blocksize = scsi_3btoul(mode_blk->blklen); 2469 2470 if (params_to_get & SA_PARAM_NUMBLOCKS) 2471 *numblocks = scsi_3btoul(mode_blk->nblocks); 2472 2473 if (params_to_get & SA_PARAM_BUFF_MODE) 2474 *buff_mode = mode_hdr->dev_spec & SMH_SA_BUF_MODE_MASK; 2475 2476 if (params_to_get & SA_PARAM_DENSITY) 2477 *density = mode_blk->density; 2478 2479 if (params_to_get & SA_PARAM_WP) 2480 *write_protect = (mode_hdr->dev_spec & SMH_SA_WP)? TRUE : FALSE; 2481 2482 if (params_to_get & SA_PARAM_SPEED) 2483 *speed = mode_hdr->dev_spec & SMH_SA_SPEED_MASK; 2484 2485 if (params_to_get & SA_PARAM_COMPRESSION) { 2486 sa_comp_t *ntcs = (sa_comp_t *) &mode_blk[1]; 2487 if (cpage == SA_DATA_COMPRESSION_PAGE) { 2488 struct scsi_data_compression_page *cp = &ntcs->dcomp; 2489 *comp_supported = 2490 (cp->dce_and_dcc & SA_DCP_DCC)? TRUE : FALSE; 2491 *comp_enabled = 2492 (cp->dce_and_dcc & SA_DCP_DCE)? TRUE : FALSE; 2493 *comp_algorithm = scsi_4btoul(cp->comp_algorithm); 2494 } else { 2495 struct scsi_dev_conf_page *cp = &ntcs->dconf; 2496 /* 2497 * We don't really know whether this device supports 2498 * Data Compression if the the algorithm field is 2499 * zero. Just say we do. 2500 */ 2501 *comp_supported = TRUE; 2502 *comp_enabled = 2503 (cp->sel_comp_alg != SA_COMP_NONE)? TRUE : FALSE; 2504 *comp_algorithm = cp->sel_comp_alg; 2505 } 2506 if (tcs != NULL) 2507 bcopy(ntcs, tcs, sizeof (sa_comp_t)); 2508 } 2509 2510 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 2511 int idx; 2512 char *xyz = mode_buffer; 2513 xpt_print_path(periph->path); 2514 printf("Mode Sense Data="); 2515 for (idx = 0; idx < mode_buffer_len; idx++) 2516 printf(" 0x%02x", xyz[idx] & 0xff); 2517 printf("\n"); 2518 } 2519 2520sagetparamsexit: 2521 2522 xpt_release_ccb(ccb); 2523 free(mode_buffer, M_TEMP); 2524 return (error); 2525} 2526 2527/* 2528 * The purpose of this function is to set one of four different parameters 2529 * for a tape drive: 2530 * - blocksize 2531 * - density 2532 * - compression / compression algorithm 2533 * - buffering mode 2534 * 2535 * The assumption is that this will be called from saioctl(), and therefore 2536 * from a process context. Thus the waiting malloc calls below. If that 2537 * assumption ever changes, the malloc calls should be changed to be 2538 * NOWAIT mallocs. 2539 * 2540 * Any or all of the four parameters may be set when this function is 2541 * called. It should handle setting more than one parameter at once. 2542 */ 2543static int 2544sasetparams(struct cam_periph *periph, sa_params params_to_set, 2545 u_int32_t blocksize, u_int8_t density, u_int32_t calg, 2546 u_int32_t sense_flags) 2547{ 2548 struct sa_softc *softc; 2549 u_int32_t current_blocksize; 2550 u_int32_t current_calg; 2551 u_int8_t current_density; 2552 u_int8_t current_speed; 2553 int comp_enabled, comp_supported; 2554 void *mode_buffer; 2555 int mode_buffer_len; 2556 struct scsi_mode_header_6 *mode_hdr; 2557 struct scsi_mode_blk_desc *mode_blk; 2558 sa_comp_t *ccomp, *cpage; 2559 int buff_mode; 2560 union ccb *ccb = NULL; 2561 int error; 2562 2563 softc = (struct sa_softc *)periph->softc; 2564 2565 ccomp = malloc(sizeof (sa_comp_t), M_TEMP, M_WAITOK); 2566 2567 /* 2568 * Since it doesn't make sense to set the number of blocks, or 2569 * write protection, we won't try to get the current value. We 2570 * always want to get the blocksize, so we can set it back to the 2571 * proper value. 2572 */ 2573 error = sagetparams(periph, 2574 params_to_set | SA_PARAM_BLOCKSIZE | SA_PARAM_SPEED, 2575 ¤t_blocksize, ¤t_density, NULL, &buff_mode, NULL, 2576 ¤t_speed, &comp_supported, &comp_enabled, 2577 ¤t_calg, ccomp); 2578 2579 if (error != 0) { 2580 free(ccomp, M_TEMP); 2581 return (error); 2582 } 2583 2584 mode_buffer_len = sizeof(*mode_hdr) + sizeof(*mode_blk); 2585 if (params_to_set & SA_PARAM_COMPRESSION) 2586 mode_buffer_len += sizeof (sa_comp_t); 2587 2588 mode_buffer = malloc(mode_buffer_len, M_TEMP, M_WAITOK); 2589 bzero(mode_buffer, mode_buffer_len); 2590 2591 mode_hdr = (struct scsi_mode_header_6 *)mode_buffer; 2592 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 2593 2594 ccb = cam_periph_getccb(periph, 1); 2595 2596retry: 2597 2598 if (params_to_set & SA_PARAM_COMPRESSION) { 2599 if (mode_blk) { 2600 cpage = (sa_comp_t *)&mode_blk[1]; 2601 } else { 2602 cpage = (sa_comp_t *)&mode_hdr[1]; 2603 } 2604 bcopy(ccomp, cpage, sizeof (sa_comp_t)); 2605 cpage->hdr.pagecode &= ~0x80; 2606 } else 2607 cpage = NULL; 2608 2609 /* 2610 * If the caller wants us to set the blocksize, use the one they 2611 * pass in. Otherwise, use the blocksize we got back from the 2612 * mode select above. 2613 */ 2614 if (mode_blk) { 2615 if (params_to_set & SA_PARAM_BLOCKSIZE) 2616 scsi_ulto3b(blocksize, mode_blk->blklen); 2617 else 2618 scsi_ulto3b(current_blocksize, mode_blk->blklen); 2619 2620 /* 2621 * Set density if requested, else preserve old density. 2622 * SCSI_SAME_DENSITY only applies to SCSI-2 or better 2623 * devices, else density we've latched up in our softc. 2624 */ 2625 if (params_to_set & SA_PARAM_DENSITY) { 2626 mode_blk->density = density; 2627 } else if (softc->scsi_rev > SCSI_REV_CCS) { 2628 mode_blk->density = SCSI_SAME_DENSITY; 2629 } else { 2630 mode_blk->density = softc->media_density; 2631 } 2632 } 2633 2634 /* 2635 * For mode selects, these two fields must be zero. 2636 */ 2637 mode_hdr->data_length = 0; 2638 mode_hdr->medium_type = 0; 2639 2640 /* set the speed to the current value */ 2641 mode_hdr->dev_spec = current_speed; 2642 2643 /* set single-initiator buffering mode */ 2644 mode_hdr->dev_spec |= SMH_SA_BUF_MODE_SIBUF; 2645 2646 if (mode_blk) 2647 mode_hdr->blk_desc_len = sizeof(struct scsi_mode_blk_desc); 2648 else 2649 mode_hdr->blk_desc_len = 0; 2650 2651 /* 2652 * First, if the user wants us to set the compression algorithm or 2653 * just turn compression on, check to make sure that this drive 2654 * supports compression. 2655 */ 2656 if (params_to_set & SA_PARAM_COMPRESSION) { 2657 /* 2658 * If the compression algorithm is 0, disable compression. 2659 * If the compression algorithm is non-zero, enable 2660 * compression and set the compression type to the 2661 * specified compression algorithm, unless the algorithm is 2662 * MT_COMP_ENABLE. In that case, we look at the 2663 * compression algorithm that is currently set and if it is 2664 * non-zero, we leave it as-is. If it is zero, and we have 2665 * saved a compression algorithm from a time when 2666 * compression was enabled before, set the compression to 2667 * the saved value. 2668 */ 2669 switch (ccomp->hdr.pagecode & ~0x80) { 2670 case SA_DATA_COMPRESSION_PAGE: 2671 if (ccomp->dcomp.dce_and_dcc & SA_DCP_DCC) { 2672 struct scsi_data_compression_page *dcp = &cpage->dcomp; 2673 if (calg == 0) { 2674 /* 2675 * Disable compression, but leave the 2676 * decompression and the capability bit 2677 * alone. 2678 */ 2679 dcp->dce_and_dcc = SA_DCP_DCC; 2680 dcp->dde_and_red |= SA_DCP_DDE; 2681 break; 2682 } 2683 /* enable compression && decompression */ 2684 dcp->dce_and_dcc = SA_DCP_DCE | SA_DCP_DCC; 2685 dcp->dde_and_red |= SA_DCP_DDE; 2686 /* 2687 * If there, use compression algorithm from caller. 2688 * Otherwise, if there's a saved compression algorithm 2689 * and there is no current algorithm, use the saved 2690 * algorithm. Else parrot back what we got and hope 2691 * for the best. 2692 */ 2693 if (calg != MT_COMP_ENABLE) { 2694 scsi_ulto4b(calg, dcp->comp_algorithm); 2695 scsi_ulto4b(calg, dcp->decomp_algorithm); 2696 } else if (scsi_4btoul(dcp->comp_algorithm) == 0 && 2697 softc->saved_comp_algorithm != 0) { 2698 scsi_ulto4b(softc->saved_comp_algorithm, 2699 dcp->comp_algorithm); 2700 scsi_ulto4b(softc->saved_comp_algorithm, 2701 dcp->decomp_algorithm); 2702 } 2703 break; 2704 } 2705 case SA_DEVICE_CONFIGURATION_PAGE: 2706 { 2707 struct scsi_dev_conf_page *dcp = &cpage->dconf; 2708 if (calg == 0) { 2709 dcp->sel_comp_alg = SA_COMP_NONE; 2710 break; 2711 } 2712 if (calg != MT_COMP_ENABLE) { 2713 dcp->sel_comp_alg = calg; 2714 } else if (dcp->sel_comp_alg == SA_COMP_NONE && 2715 softc->saved_comp_algorithm != 0) { 2716 dcp->sel_comp_alg = softc->saved_comp_algorithm; 2717 } 2718 break; 2719 } 2720 default: 2721 /* 2722 * The drive doesn't seem to support compression, 2723 * so turn off the set compression bit. 2724 */ 2725 params_to_set &= ~SA_PARAM_COMPRESSION; 2726 xpt_print_path(periph->path); 2727 printf("device does not seem to support compression\n"); 2728 2729 /* 2730 * If that was the only thing the user wanted us to set, 2731 * clean up allocated resources and return with 2732 * 'operation not supported'. 2733 */ 2734 if (params_to_set == SA_PARAM_NONE) { 2735 free(mode_buffer, M_TEMP); 2736 xpt_release_ccb(ccb); 2737 return (ENODEV); 2738 } 2739 2740 /* 2741 * That wasn't the only thing the user wanted us to set. 2742 * So, decrease the stated mode buffer length by the 2743 * size of the compression mode page. 2744 */ 2745 mode_buffer_len -= sizeof(sa_comp_t); 2746 } 2747 } 2748 2749 /* It is safe to retry this operation */ 2750 scsi_mode_select(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, 2751 (params_to_set & SA_PARAM_COMPRESSION)? TRUE : FALSE, 2752 FALSE, mode_buffer, mode_buffer_len, SSD_FULL_SIZE, 5000); 2753 2754 error = cam_periph_runccb(ccb, saerror, 0, 2755 sense_flags, &softc->device_stats); 2756 QFRLS(ccb); 2757 2758 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 2759 int idx; 2760 char *xyz = mode_buffer; 2761 xpt_print_path(periph->path); 2762 printf("Err%d, Mode Select Data=", error); 2763 for (idx = 0; idx < mode_buffer_len; idx++) 2764 printf(" 0x%02x", xyz[idx] & 0xff); 2765 printf("\n"); 2766 } 2767 2768 2769 if (error) { 2770 /* 2771 * If we can, try without setting density/blocksize. 2772 */ 2773 if (mode_blk) { 2774 if ((params_to_set & 2775 (SA_PARAM_DENSITY|SA_PARAM_BLOCKSIZE)) == 0) { 2776 mode_blk = NULL; 2777 goto retry; 2778 } 2779 } else { 2780 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 2781 cpage = (sa_comp_t *)&mode_blk[1]; 2782 } 2783 2784 /* 2785 * If we were setting the blocksize, and that failed, we 2786 * want to set it to its original value. If we weren't 2787 * setting the blocksize, we don't want to change it. 2788 */ 2789 scsi_ulto3b(current_blocksize, mode_blk->blklen); 2790 2791 /* 2792 * Set density if requested, else preserve old density. 2793 * SCSI_SAME_DENSITY only applies to SCSI-2 or better 2794 * devices, else density we've latched up in our softc. 2795 */ 2796 if (params_to_set & SA_PARAM_DENSITY) { 2797 mode_blk->density = current_density; 2798 } else if (softc->scsi_rev > SCSI_REV_CCS) { 2799 mode_blk->density = SCSI_SAME_DENSITY; 2800 } else { 2801 mode_blk->density = softc->media_density; 2802 } 2803 2804 if (params_to_set & SA_PARAM_COMPRESSION) 2805 bcopy(ccomp, cpage, sizeof (sa_comp_t)); 2806 2807 /* 2808 * The retry count is the only CCB field that might have been 2809 * changed that we care about, so reset it back to 1. 2810 */ 2811 ccb->ccb_h.retry_count = 1; 2812 cam_periph_runccb(ccb, saerror, 0, sense_flags, 2813 &softc->device_stats); 2814 QFRLS(ccb); 2815 } 2816 2817 xpt_release_ccb(ccb); 2818 2819 if (ccomp != NULL) 2820 free(ccomp, M_TEMP); 2821 2822 if (params_to_set & SA_PARAM_COMPRESSION) { 2823 if (error) { 2824 softc->flags &= ~SA_FLAG_COMP_ENABLED; 2825 /* 2826 * Even if we get an error setting compression, 2827 * do not say that we don't support it. We could 2828 * have been wrong, or it may be media specific. 2829 * softc->flags &= ~SA_FLAG_COMP_SUPP; 2830 */ 2831 softc->saved_comp_algorithm = softc->comp_algorithm; 2832 softc->comp_algorithm = 0; 2833 } else { 2834 softc->flags |= SA_FLAG_COMP_ENABLED; 2835 softc->comp_algorithm = calg; 2836 } 2837 } 2838 2839 free(mode_buffer, M_TEMP); 2840 return (error); 2841} 2842 2843static void 2844saprevent(struct cam_periph *periph, int action) 2845{ 2846 struct sa_softc *softc; 2847 union ccb *ccb; 2848 int error, sf; 2849 2850 softc = (struct sa_softc *)periph->softc; 2851 2852 if ((action == PR_ALLOW) && (softc->flags & SA_FLAG_TAPE_LOCKED) == 0) 2853 return; 2854 if ((action == PR_PREVENT) && (softc->flags & SA_FLAG_TAPE_LOCKED) != 0) 2855 return; 2856 2857 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) 2858 sf = 0; 2859 else 2860 sf = SF_QUIET_IR; 2861 2862 ccb = cam_periph_getccb(periph, 1); 2863 2864 /* It is safe to retry this operation */ 2865 scsi_prevent(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, action, 2866 SSD_FULL_SIZE, 100000); 2867 2868 /* 2869 * We can be quiet about illegal requests. 2870 */ 2871 error = cam_periph_runccb(ccb, saerror, 0, sf, &softc->device_stats); 2872 QFRLS(ccb); 2873 if (error == 0) { 2874 if (action == PR_ALLOW) 2875 softc->flags &= ~SA_FLAG_TAPE_LOCKED; 2876 else 2877 softc->flags |= SA_FLAG_TAPE_LOCKED; 2878 } 2879 2880 xpt_release_ccb(ccb); 2881} 2882 2883static int 2884sarewind(struct cam_periph *periph) 2885{ 2886 union ccb *ccb; 2887 struct sa_softc *softc; 2888 int error; 2889 2890 softc = (struct sa_softc *)periph->softc; 2891 2892 ccb = cam_periph_getccb(periph, 1); 2893 2894 /* It is safe to retry this operation */ 2895 scsi_rewind(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 2896 SSD_FULL_SIZE, REWIND_TIMEOUT); 2897 2898 softc->dsreg = MTIO_DSREG_REW; 2899 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 2900 softc->dsreg = MTIO_DSREG_REST; 2901 2902 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 2903 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 2904 2905 xpt_release_ccb(ccb); 2906 if (error == 0) 2907 softc->fileno = softc->blkno = (daddr_t) 0; 2908 else 2909 softc->fileno = softc->blkno = (daddr_t) -1; 2910 return (error); 2911} 2912 2913static int 2914saspace(struct cam_periph *periph, int count, scsi_space_code code) 2915{ 2916 union ccb *ccb; 2917 struct sa_softc *softc; 2918 int error; 2919 2920 softc = (struct sa_softc *)periph->softc; 2921 2922 ccb = cam_periph_getccb(periph, 1); 2923 2924 /* This cannot be retried */ 2925 2926 scsi_space(&ccb->csio, 0, sadone, MSG_SIMPLE_Q_TAG, code, count, 2927 SSD_FULL_SIZE, SPACE_TIMEOUT); 2928 2929 softc->dsreg = (count < 0)? MTIO_DSREG_REV : MTIO_DSREG_FWD; 2930 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 2931 softc->dsreg = MTIO_DSREG_REST; 2932 2933 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 2934 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 2935 2936 xpt_release_ccb(ccb); 2937 2938 /* 2939 * If a spacing operation has failed, we need to invalidate 2940 * this mount. 2941 * 2942 * If the spacing operation was setmarks or to end of recorded data, 2943 * we no longer know our relative position. 2944 * 2945 * We are not managing residuals here (really). 2946 */ 2947 if (error) { 2948 softc->fileno = softc->blkno = (daddr_t) -1; 2949 } else if (code == SS_SETMARKS || code == SS_EOD) { 2950 softc->fileno = softc->blkno = (daddr_t) -1; 2951 } else if (code == SS_FILEMARKS && softc->fileno != (daddr_t) -1) { 2952 softc->fileno += count; 2953 softc->blkno = 0; 2954 } else if (code == SS_BLOCKS && softc->blkno != (daddr_t) -1) { 2955 softc->blkno += count; 2956 } 2957 return (error); 2958} 2959 2960static int 2961sawritefilemarks(struct cam_periph *periph, int nmarks, int setmarks) 2962{ 2963 union ccb *ccb; 2964 struct sa_softc *softc; 2965 int error; 2966 2967 softc = (struct sa_softc *)periph->softc; 2968 2969 ccb = cam_periph_getccb(periph, 1); 2970 2971 softc->dsreg = MTIO_DSREG_FMK; 2972 /* this *must* not be retried */ 2973 scsi_write_filemarks(&ccb->csio, 0, sadone, MSG_SIMPLE_Q_TAG, 2974 FALSE, setmarks, nmarks, SSD_FULL_SIZE, 60000); 2975 softc->dsreg = MTIO_DSREG_REST; 2976 2977 2978 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 2979 2980 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 2981 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 2982 2983 /* 2984 * XXXX: Get back the actual number of filemarks written 2985 * XXXX: (there can be a residual). 2986 */ 2987 if (error == 0 && nmarks) { 2988 struct sa_softc *softc = (struct sa_softc *)periph->softc; 2989 softc->filemarks += nmarks; 2990 } 2991 xpt_release_ccb(ccb); 2992 2993 /* 2994 * Update relative positions (if we're doing that). 2995 */ 2996 if (error) { 2997 softc->fileno = softc->blkno = (daddr_t) -1; 2998 } else if (softc->fileno != (daddr_t) -1) { 2999 softc->fileno += nmarks; 3000 softc->blkno = 0; 3001 } 3002 return (error); 3003} 3004 3005static int 3006sardpos(struct cam_periph *periph, int hard, u_int32_t *blkptr) 3007{ 3008 struct scsi_tape_position_data loc; 3009 union ccb *ccb; 3010 struct sa_softc *softc = (struct sa_softc *)periph->softc; 3011 int error; 3012 3013 /* 3014 * We have to try and flush any buffered writes here if we were writing. 3015 * 3016 * The SCSI specification is vague enough about situations like 3017 * different sized blocks in a tape drive buffer as to make one 3018 * wary about trying to figure out the actual block location value 3019 * if data is in the tape drive buffer. 3020 */ 3021 ccb = cam_periph_getccb(periph, 1); 3022 3023 if (softc->flags & SA_FLAG_TAPE_WRITTEN) { 3024 error = sawritefilemarks(periph, 0, 0); 3025 if (error && error != EACCES) 3026 return (error); 3027 } 3028 3029 scsi_read_position(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, 3030 hard, &loc, SSD_FULL_SIZE, 5000); 3031 softc->dsreg = MTIO_DSREG_RBSY; 3032 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 3033 softc->dsreg = MTIO_DSREG_REST; 3034 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3035 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, 0); 3036 3037 if (error == 0) { 3038 if (loc.flags & SA_RPOS_UNCERTAIN) { 3039 error = EINVAL; /* nothing is certain */ 3040 } else { 3041#if 0 3042 u_int32_t firstblk, lastblk, nbufblk, nbufbyte; 3043 3044 firstblk = scsi_4btoul(loc.firstblk); 3045 lastblk = scsi_4btoul(loc.lastblk); 3046 nbufblk = scsi_4btoul(loc.nbufblk); 3047 nbufbyte = scsi_4btoul(loc.nbufbyte); 3048 if (lastblk || nbufblk || nbufbyte) { 3049 xpt_print_path(periph->path); 3050 printf("rdpos firstblk 0x%x lastblk 0x%x bufblk" 3051 " 0x%x bufbyte 0x%x\n", firstblk, lastblk, 3052 nbufblk, nbufbyte); 3053 } 3054 *blkptr = firstblk; 3055#else 3056 *blkptr = scsi_4btoul(loc.firstblk); 3057#endif 3058 } 3059 } 3060 3061 xpt_release_ccb(ccb); 3062 return (error); 3063} 3064 3065static int 3066sasetpos(struct cam_periph *periph, int hard, u_int32_t *blkptr) 3067{ 3068 union ccb *ccb; 3069 struct sa_softc *softc; 3070 int error; 3071 3072 /* 3073 * We used to try and flush any buffered writes here. 3074 * Now we push this onto user applications to either 3075 * flush the pending writes themselves (via a zero count 3076 * WRITE FILEMARKS command) or they can trust their tape 3077 * drive to do this correctly for them. 3078 */ 3079 3080 softc = (struct sa_softc *)periph->softc; 3081 ccb = cam_periph_getccb(periph, 1); 3082 3083 3084 scsi_set_position(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, 3085 hard, *blkptr, SSD_FULL_SIZE, 60 * 60 * 1000); 3086 3087 softc->dsreg = MTIO_DSREG_POS; 3088 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 3089 softc->dsreg = MTIO_DSREG_REST; 3090 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3091 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, 0); 3092 xpt_release_ccb(ccb); 3093 /* 3094 * Note relative file && block number position as now unknown. 3095 */ 3096 softc->fileno = softc->blkno = (daddr_t) -1; 3097 return (error); 3098} 3099 3100static int 3101saretension(struct cam_periph *periph) 3102{ 3103 union ccb *ccb; 3104 struct sa_softc *softc; 3105 int error; 3106 3107 softc = (struct sa_softc *)periph->softc; 3108 3109 ccb = cam_periph_getccb(periph, 1); 3110 3111 /* It is safe to retry this operation */ 3112 scsi_load_unload(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 3113 FALSE, TRUE, TRUE, SSD_FULL_SIZE, ERASE_TIMEOUT); 3114 3115 softc->dsreg = MTIO_DSREG_TEN; 3116 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 3117 softc->dsreg = MTIO_DSREG_REST; 3118 3119 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3120 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 3121 xpt_release_ccb(ccb); 3122 if (error == 0) 3123 softc->fileno = softc->blkno = (daddr_t) 0; 3124 else 3125 softc->fileno = softc->blkno = (daddr_t) -1; 3126 return (error); 3127} 3128 3129static int 3130sareservereleaseunit(struct cam_periph *periph, int reserve) 3131{ 3132 union ccb *ccb; 3133 struct sa_softc *softc; 3134 int error; 3135 3136 softc = (struct sa_softc *)periph->softc; 3137 ccb = cam_periph_getccb(periph, 1); 3138 3139 /* It is safe to retry this operation */ 3140 scsi_reserve_release_unit(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, 3141 FALSE, 0, SSD_FULL_SIZE, 5000, reserve); 3142 softc->dsreg = MTIO_DSREG_RBSY; 3143 error = cam_periph_runccb(ccb, saerror, 0, 3144 SF_RETRY_UA | SF_NO_PRINT, &softc->device_stats); 3145 softc->dsreg = MTIO_DSREG_REST; 3146 QFRLS(ccb); 3147 xpt_release_ccb(ccb); 3148 3149 /* 3150 * If the error was Illegal Request, then the device doesn't support 3151 * RESERVE/RELEASE. This is not an error. 3152 */ 3153 if (error == EINVAL) { 3154 error = 0; 3155 } 3156 3157 return (error); 3158} 3159 3160static int 3161saloadunload(struct cam_periph *periph, int load) 3162{ 3163 union ccb *ccb; 3164 struct sa_softc *softc; 3165 int error; 3166 3167 softc = (struct sa_softc *)periph->softc; 3168 3169 ccb = cam_periph_getccb(periph, 1); 3170 3171 /* It is safe to retry this operation */ 3172 scsi_load_unload(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 3173 FALSE, FALSE, load, SSD_FULL_SIZE, REWIND_TIMEOUT); 3174 3175 softc->dsreg = (load)? MTIO_DSREG_LD : MTIO_DSREG_UNL; 3176 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 3177 softc->dsreg = MTIO_DSREG_REST; 3178 QFRLS(ccb); 3179 xpt_release_ccb(ccb); 3180 3181 if (error || load == 0) 3182 softc->fileno = softc->blkno = (daddr_t) -1; 3183 else if (error == 0) 3184 softc->fileno = softc->blkno = (daddr_t) 0; 3185 return (error); 3186} 3187 3188static int 3189saerase(struct cam_periph *periph, int longerase) 3190{ 3191 3192 union ccb *ccb; 3193 struct sa_softc *softc; 3194 int error; 3195 3196 softc = (struct sa_softc *)periph->softc; 3197 3198 ccb = cam_periph_getccb(periph, 1); 3199 3200 scsi_erase(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, FALSE, longerase, 3201 SSD_FULL_SIZE, ERASE_TIMEOUT); 3202 3203 softc->dsreg = MTIO_DSREG_ZER; 3204 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 3205 softc->dsreg = MTIO_DSREG_REST; 3206 3207 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3208 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 3209 xpt_release_ccb(ccb); 3210 return (error); 3211} 3212 3213#endif /* _KERNEL */ 3214 3215/* 3216 * Read tape block limits command. 3217 */ 3218void 3219scsi_read_block_limits(struct ccb_scsiio *csio, u_int32_t retries, 3220 void (*cbfcnp)(struct cam_periph *, union ccb *), 3221 u_int8_t tag_action, 3222 struct scsi_read_block_limits_data *rlimit_buf, 3223 u_int8_t sense_len, u_int32_t timeout) 3224{ 3225 struct scsi_read_block_limits *scsi_cmd; 3226 3227 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_IN, tag_action, 3228 (u_int8_t *)rlimit_buf, sizeof(*rlimit_buf), sense_len, 3229 sizeof(*scsi_cmd), timeout); 3230 3231 scsi_cmd = (struct scsi_read_block_limits *)&csio->cdb_io.cdb_bytes; 3232 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3233 scsi_cmd->opcode = READ_BLOCK_LIMITS; 3234} 3235 3236void 3237scsi_sa_read_write(struct ccb_scsiio *csio, u_int32_t retries, 3238 void (*cbfcnp)(struct cam_periph *, union ccb *), 3239 u_int8_t tag_action, int readop, int sli, 3240 int fixed, u_int32_t length, u_int8_t *data_ptr, 3241 u_int32_t dxfer_len, u_int8_t sense_len, u_int32_t timeout) 3242{ 3243 struct scsi_sa_rw *scsi_cmd; 3244 3245 scsi_cmd = (struct scsi_sa_rw *)&csio->cdb_io.cdb_bytes; 3246 scsi_cmd->opcode = readop ? SA_READ : SA_WRITE; 3247 scsi_cmd->sli_fixed = 0; 3248 if (sli && readop) 3249 scsi_cmd->sli_fixed |= SAR_SLI; 3250 if (fixed) 3251 scsi_cmd->sli_fixed |= SARW_FIXED; 3252 scsi_ulto3b(length, scsi_cmd->length); 3253 scsi_cmd->control = 0; 3254 3255 cam_fill_csio(csio, retries, cbfcnp, readop ? CAM_DIR_IN : CAM_DIR_OUT, 3256 tag_action, data_ptr, dxfer_len, sense_len, 3257 sizeof(*scsi_cmd), timeout); 3258} 3259 3260void 3261scsi_load_unload(struct ccb_scsiio *csio, u_int32_t retries, 3262 void (*cbfcnp)(struct cam_periph *, union ccb *), 3263 u_int8_t tag_action, int immediate, int eot, 3264 int reten, int load, u_int8_t sense_len, 3265 u_int32_t timeout) 3266{ 3267 struct scsi_load_unload *scsi_cmd; 3268 3269 scsi_cmd = (struct scsi_load_unload *)&csio->cdb_io.cdb_bytes; 3270 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3271 scsi_cmd->opcode = LOAD_UNLOAD; 3272 if (immediate) 3273 scsi_cmd->immediate = SLU_IMMED; 3274 if (eot) 3275 scsi_cmd->eot_reten_load |= SLU_EOT; 3276 if (reten) 3277 scsi_cmd->eot_reten_load |= SLU_RETEN; 3278 if (load) 3279 scsi_cmd->eot_reten_load |= SLU_LOAD; 3280 3281 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, 3282 NULL, 0, sense_len, sizeof(*scsi_cmd), timeout); 3283} 3284 3285void 3286scsi_rewind(struct ccb_scsiio *csio, u_int32_t retries, 3287 void (*cbfcnp)(struct cam_periph *, union ccb *), 3288 u_int8_t tag_action, int immediate, u_int8_t sense_len, 3289 u_int32_t timeout) 3290{ 3291 struct scsi_rewind *scsi_cmd; 3292 3293 scsi_cmd = (struct scsi_rewind *)&csio->cdb_io.cdb_bytes; 3294 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3295 scsi_cmd->opcode = REWIND; 3296 if (immediate) 3297 scsi_cmd->immediate = SREW_IMMED; 3298 3299 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3300 0, sense_len, sizeof(*scsi_cmd), timeout); 3301} 3302 3303void 3304scsi_space(struct ccb_scsiio *csio, u_int32_t retries, 3305 void (*cbfcnp)(struct cam_periph *, union ccb *), 3306 u_int8_t tag_action, scsi_space_code code, 3307 u_int32_t count, u_int8_t sense_len, u_int32_t timeout) 3308{ 3309 struct scsi_space *scsi_cmd; 3310 3311 scsi_cmd = (struct scsi_space *)&csio->cdb_io.cdb_bytes; 3312 scsi_cmd->opcode = SPACE; 3313 scsi_cmd->code = code; 3314 scsi_ulto3b(count, scsi_cmd->count); 3315 scsi_cmd->control = 0; 3316 3317 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3318 0, sense_len, sizeof(*scsi_cmd), timeout); 3319} 3320 3321void 3322scsi_write_filemarks(struct ccb_scsiio *csio, u_int32_t retries, 3323 void (*cbfcnp)(struct cam_periph *, union ccb *), 3324 u_int8_t tag_action, int immediate, int setmark, 3325 u_int32_t num_marks, u_int8_t sense_len, 3326 u_int32_t timeout) 3327{ 3328 struct scsi_write_filemarks *scsi_cmd; 3329 3330 scsi_cmd = (struct scsi_write_filemarks *)&csio->cdb_io.cdb_bytes; 3331 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3332 scsi_cmd->opcode = WRITE_FILEMARKS; 3333 if (immediate) 3334 scsi_cmd->byte2 |= SWFMRK_IMMED; 3335 if (setmark) 3336 scsi_cmd->byte2 |= SWFMRK_WSMK; 3337 3338 scsi_ulto3b(num_marks, scsi_cmd->num_marks); 3339 3340 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3341 0, sense_len, sizeof(*scsi_cmd), timeout); 3342} 3343 3344/* 3345 * The reserve and release unit commands differ only by their opcodes. 3346 */ 3347void 3348scsi_reserve_release_unit(struct ccb_scsiio *csio, u_int32_t retries, 3349 void (*cbfcnp)(struct cam_periph *, union ccb *), 3350 u_int8_t tag_action, int third_party, 3351 int third_party_id, u_int8_t sense_len, 3352 u_int32_t timeout, int reserve) 3353{ 3354 struct scsi_reserve_release_unit *scsi_cmd; 3355 3356 scsi_cmd = (struct scsi_reserve_release_unit *)&csio->cdb_io.cdb_bytes; 3357 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3358 3359 if (reserve) 3360 scsi_cmd->opcode = RESERVE_UNIT; 3361 else 3362 scsi_cmd->opcode = RELEASE_UNIT; 3363 3364 if (third_party) { 3365 scsi_cmd->lun_thirdparty |= SRRU_3RD_PARTY; 3366 scsi_cmd->lun_thirdparty |= 3367 ((third_party_id << SRRU_3RD_SHAMT) & SRRU_3RD_MASK); 3368 } 3369 3370 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3371 0, sense_len, sizeof(*scsi_cmd), timeout); 3372} 3373 3374void 3375scsi_erase(struct ccb_scsiio *csio, u_int32_t retries, 3376 void (*cbfcnp)(struct cam_periph *, union ccb *), 3377 u_int8_t tag_action, int immediate, int long_erase, 3378 u_int8_t sense_len, u_int32_t timeout) 3379{ 3380 struct scsi_erase *scsi_cmd; 3381 3382 scsi_cmd = (struct scsi_erase *)&csio->cdb_io.cdb_bytes; 3383 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3384 3385 scsi_cmd->opcode = ERASE; 3386 3387 if (immediate) 3388 scsi_cmd->lun_imm_long |= SE_IMMED; 3389 3390 if (long_erase) 3391 scsi_cmd->lun_imm_long |= SE_LONG; 3392 3393 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3394 0, sense_len, sizeof(*scsi_cmd), timeout); 3395} 3396 3397/* 3398 * Read Tape Position command. 3399 */ 3400void 3401scsi_read_position(struct ccb_scsiio *csio, u_int32_t retries, 3402 void (*cbfcnp)(struct cam_periph *, union ccb *), 3403 u_int8_t tag_action, int hardsoft, 3404 struct scsi_tape_position_data *sbp, 3405 u_int8_t sense_len, u_int32_t timeout) 3406{ 3407 struct scsi_tape_read_position *scmd; 3408 3409 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_IN, tag_action, 3410 (u_int8_t *)sbp, sizeof (*sbp), sense_len, sizeof(*scmd), timeout); 3411 scmd = (struct scsi_tape_read_position *)&csio->cdb_io.cdb_bytes; 3412 bzero(scmd, sizeof(*scmd)); 3413 scmd->opcode = READ_POSITION; 3414 scmd->byte1 = hardsoft; 3415} 3416 3417/* 3418 * Set Tape Position command. 3419 */ 3420void 3421scsi_set_position(struct ccb_scsiio *csio, u_int32_t retries, 3422 void (*cbfcnp)(struct cam_periph *, union ccb *), 3423 u_int8_t tag_action, int hardsoft, u_int32_t blkno, 3424 u_int8_t sense_len, u_int32_t timeout) 3425{ 3426 struct scsi_tape_locate *scmd; 3427 3428 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, 3429 (u_int8_t *)NULL, 0, sense_len, sizeof(*scmd), timeout); 3430 scmd = (struct scsi_tape_locate *)&csio->cdb_io.cdb_bytes; 3431 bzero(scmd, sizeof(*scmd)); 3432 scmd->opcode = LOCATE; 3433 if (hardsoft) 3434 scmd->byte1 |= SA_SPOS_BT; 3435 scsi_ulto4b(blkno, scmd->blkaddr); 3436} 3437