1/*
|
2 * $FreeBSD: head/sys/cam/scsi/scsi_sa.c 58934 2000-04-02 15:24:56Z phk $
|
2 * $FreeBSD: head/sys/cam/scsi/scsi_sa.c 59249 2000-04-15 05:54:02Z phk $ |
3 * 4 * Implementation of SCSI Sequential Access Peripheral driver for CAM. 5 * 6 * Copyright (c) 1999, 2000 Matthew Jacob 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 32#include <sys/param.h> 33#include <sys/queue.h> 34#ifdef _KERNEL 35#include <sys/systm.h> 36#include <sys/kernel.h> 37#endif 38#include <sys/types.h> 39#include <sys/buf.h> 40#include <sys/malloc.h> 41#include <sys/mtio.h> 42#include <sys/conf.h> 43#include <sys/buf.h> 44#include <sys/devicestat.h> 45#include <machine/limits.h> 46 47#ifndef _KERNEL 48#include <stdio.h> 49#include <string.h> 50#endif 51 52#include <cam/cam.h> 53#include <cam/cam_ccb.h> 54#include <cam/cam_extend.h> 55#include <cam/cam_periph.h> 56#include <cam/cam_xpt_periph.h> 57#include <cam/cam_debug.h> 58 59#include <cam/scsi/scsi_all.h> 60#include <cam/scsi/scsi_message.h> 61#include <cam/scsi/scsi_sa.h> 62 63#ifdef _KERNEL 64 65#include <opt_sa.h> 66 67#ifndef SA_SPACE_TIMEOUT 68#define SA_SPACE_TIMEOUT 1 * 60 69#endif 70#ifndef SA_REWIND_TIMEOUT 71#define SA_REWIND_TIMEOUT 2 * 60 72#endif 73#ifndef SA_ERASE_TIMEOUT 74#define SA_ERASE_TIMEOUT 4 * 60 75#endif 76 77#define REWIND_TIMEOUT (SA_REWIND_TIMEOUT * 60 * 1000) 78#define ERASE_TIMEOUT (SA_ERASE_TIMEOUT * 60 * 1000) 79#define SPACE_TIMEOUT (SA_SPACE_TIMEOUT * 60 * 1000) 80 81/* 82 * Additional options that can be set for config: SA_1FM_AT_EOT 83 */ 84 85#ifndef UNUSED_PARAMETER 86#define UNUSED_PARAMETER(x) x = x 87#endif 88 89#define QFRLS(ccb) \ 90 if (((ccb)->ccb_h.status & CAM_DEV_QFRZN) != 0) \ 91 cam_release_devq((ccb)->ccb_h.path, 0, 0, 0, FALSE) 92 93/* 94 * Driver states 95 */ 96 97 98typedef enum { 99 SA_STATE_NORMAL, SA_STATE_ABNORMAL 100} sa_state; 101 102typedef enum { 103 SA_CCB_BUFFER_IO, 104 SA_CCB_WAITING 105} sa_ccb_types; 106 107#define ccb_type ppriv_field0 108#define ccb_bp ppriv_ptr1 109 110typedef enum { 111 SA_FLAG_OPEN = 0x0001, 112 SA_FLAG_FIXED = 0x0002, 113 SA_FLAG_TAPE_LOCKED = 0x0004, 114 SA_FLAG_TAPE_MOUNTED = 0x0008, 115 SA_FLAG_TAPE_WP = 0x0010, 116 SA_FLAG_TAPE_WRITTEN = 0x0020, 117 SA_FLAG_EOM_PENDING = 0x0040, 118 SA_FLAG_EIO_PENDING = 0x0080, 119 SA_FLAG_EOF_PENDING = 0x0100, 120 SA_FLAG_ERR_PENDING = (SA_FLAG_EOM_PENDING|SA_FLAG_EIO_PENDING| 121 SA_FLAG_EOF_PENDING), 122 SA_FLAG_INVALID = 0x0200, 123 SA_FLAG_COMP_ENABLED = 0x0400, 124 SA_FLAG_COMP_SUPP = 0x0800, 125 SA_FLAG_COMP_UNSUPP = 0x1000, 126 SA_FLAG_TAPE_FROZEN = 0x2000 127} sa_flags; 128 129typedef enum { 130 SA_MODE_REWIND = 0x00, 131 SA_MODE_NOREWIND = 0x01, 132 SA_MODE_OFFLINE = 0x02 133} sa_mode; 134 135typedef enum { 136 SA_PARAM_NONE = 0x00, 137 SA_PARAM_BLOCKSIZE = 0x01, 138 SA_PARAM_DENSITY = 0x02, 139 SA_PARAM_COMPRESSION = 0x04, 140 SA_PARAM_BUFF_MODE = 0x08, 141 SA_PARAM_NUMBLOCKS = 0x10, 142 SA_PARAM_WP = 0x20, 143 SA_PARAM_SPEED = 0x40, 144 SA_PARAM_ALL = 0x7f 145} sa_params; 146 147typedef enum { 148 SA_QUIRK_NONE = 0x00, 149 SA_QUIRK_NOCOMP = 0x01, /* can't deal with compression at all */ 150 SA_QUIRK_FIXED = 0x02, /* force fixed mode */ 151 SA_QUIRK_VARIABLE = 0x04, /* force variable mode */ 152 SA_QUIRK_2FM = 0x08, /* Needs Two File Marks at EOD */ 153 SA_QUIRK_1FM = 0x10, /* No more than 1 File Mark at EOD */ 154 SA_QUIRK_NODREAD = 0x20 /* Don't try and dummy read density */ 155} sa_quirks; 156 157/* units are bits 4-7, 16-21 (1024 units) */ 158#define SAUNIT(DEV) \ 159 (((minor(DEV) & 0xF0) >> 4) | ((minor(DEV) & 0x3f0000) >> 16)) 160 161#define SAMODE(z) ((minor(z) & 0x3)) 162#define SADENSITY(z) (((minor(z) >> 2) & 0x3)) 163#define SA_IS_CTRL(z) (minor(z) & (1 << 29)) 164 165#define SA_NOT_CTLDEV 0 166#define SA_CTLDEV 1 167 168#define SA_ATYPE_R 0 169#define SA_ATYPE_NR 1 170#define SA_ATYPE_ER 2 171 172#define SAMINOR(ctl, unit, mode, access) \ 173 ((ctl << 29) | ((unit & 0x3f0) << 16) | ((unit & 0xf) << 4) | \ 174 (mode << 0x2) | (access & 0x3)) 175 176#define SA_NUM_MODES 4 177struct sa_devs { 178 dev_t ctl_dev; 179 struct sa_mode_devs { 180 dev_t r_dev; 181 dev_t nr_dev; 182 dev_t er_dev; 183 } mode_devs[SA_NUM_MODES]; 184 dev_t r_dev; 185 dev_t nr_dev; 186 dev_t er_dev; 187}; 188 189struct sa_softc { 190 sa_state state; 191 sa_flags flags; 192 sa_quirks quirks;
|
193 struct buf_queue_head buf_queue;
|
193 struct bio_queue_head bio_queue; |
194 int queue_count; 195 struct devstat device_stats; 196 struct sa_devs devs; 197 int blk_gran; 198 int blk_mask; 199 int blk_shift; 200 u_int32_t max_blk; 201 u_int32_t min_blk; 202 u_int32_t comp_algorithm; 203 u_int32_t saved_comp_algorithm; 204 u_int32_t media_blksize; 205 u_int32_t last_media_blksize; 206 u_int32_t media_numblks; 207 u_int8_t media_density; 208 u_int8_t speed; 209 u_int8_t scsi_rev; 210 u_int8_t dsreg; /* mtio mt_dsreg, redux */ 211 int buffer_mode; 212 int filemarks; 213 union ccb saved_ccb; 214 215 /* 216 * Relative to BOT Location. 217 */ 218 daddr_t fileno; 219 daddr_t blkno; 220 221 /* 222 * Latched Error Info 223 */ 224 struct { 225 struct scsi_sense_data _last_io_sense; 226 u_int32_t _last_io_resid; 227 u_int8_t _last_io_cdb[CAM_MAX_CDBLEN]; 228 struct scsi_sense_data _last_ctl_sense; 229 u_int32_t _last_ctl_resid; 230 u_int8_t _last_ctl_cdb[CAM_MAX_CDBLEN]; 231#define last_io_sense errinfo._last_io_sense 232#define last_io_resid errinfo._last_io_resid 233#define last_io_cdb errinfo._last_io_cdb 234#define last_ctl_sense errinfo._last_ctl_sense 235#define last_ctl_resid errinfo._last_ctl_resid 236#define last_ctl_cdb errinfo._last_ctl_cdb 237 } errinfo; 238 /* 239 * Misc other flags/state 240 */ 241 u_int32_t 242 : 31, 243 ctrl_mode : 1; /* control device open */ 244}; 245 246struct sa_quirk_entry { 247 struct scsi_inquiry_pattern inq_pat; /* matching pattern */ 248 sa_quirks quirks; /* specific quirk type */ 249 u_int32_t prefblk; /* preferred blocksize when in fixed mode */ 250}; 251 252static struct sa_quirk_entry sa_quirk_table[] = 253{ 254 { 255 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 256 "Python 25601*", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_NODREAD, 0 257 }, 258 { 259 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 260 "Python*", "*"}, SA_QUIRK_NODREAD, 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)
|
623sastrategy(struct bio *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;
|
630 if (SA_IS_CTRL(bp->bio_dev)) { 631 bp->bio_error = EINVAL; |
632 goto bad; 633 }
|
634 unit = SAUNIT(bp->b_dev);
|
634 unit = SAUNIT(bp->bio_dev); |
635 periph = cam_extend_get(saperiphs, unit); 636 if (periph == NULL) {
|
637 bp->b_error = ENXIO;
|
637 bp->bio_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;
|
646 bp->bio_error = ENXIO; |
647 goto bad; 648 } 649 650 if (softc->flags & SA_FLAG_TAPE_FROZEN) { 651 splx(s);
|
652 bp->b_error = EPERM;
|
652 bp->bio_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)
|
661 if (bp->bio_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)) ||
|
671 ((bp->bio_bcount & softc->blk_mask) != 0)) || |
672 ((softc->blk_mask == ~0) &&
|
673 ((bp->b_bcount % softc->min_blk) != 0))) {
|
673 ((bp->bio_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;
|
678 bp->bio_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) {
|
681 } else if ((bp->bio_bcount > softc->max_blk) || 682 (bp->bio_bcount < softc->min_blk) || 683 (bp->bio_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;
|
693 bp->bio_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);
|
707 bioq_insert_tail(&softc->bio_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,
|
711 "%s byte %s queue count now %d\n", (int) bp->bio_bcount, |
712 (softc->flags & SA_FLAG_FIXED)? "fixed" : "variable",
|
713 (bp->b_iocmd == BIO_READ)? "read" : "write", softc->queue_count));
|
713 (bp->bio_cmd == BIO_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_ioflags |= BIO_ERROR;
|
724 bp->bio_flags |= BIO_ERROR; |
725done: 726 727 /* 728 * Correctly set the buf to indicate a completed xfer 729 */
|
730 bp->b_resid = bp->b_bcount;
|
730 bp->bio_resid = bp->bio_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;
|
1224 struct bio *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_ioflags |= BIO_ERROR;
|
1255 while ((q_bp = bioq_first(&softc->bio_queue)) != NULL){ 1256 bioq_remove(&softc->bio_queue, q_bp); 1257 q_bp->bio_resid = q_bp->bio_bcount; 1258 q_bp->bio_error = ENXIO; 1259 q_bp->bio_flags |= BIO_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);
|
1370 bioq_init(&softc->bio_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;
|
1467 struct bio *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);
|
1474 bp = bioq_first(&softc->bio_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;
|
1488 struct bio *done_bp; |
1489 softc->queue_count--;
|
1490 bufq_remove(&softc->buf_queue, bp);
1491 bp->b_resid = bp->b_bcount;
1492 bp->b_ioflags |= BIO_ERROR;
|
1490 bioq_remove(&softc->bio_queue, bp); 1491 bp->bio_resid = bp->bio_bcount; 1492 bp->bio_flags |= BIO_ERROR; |
1493 if ((softc->flags & SA_FLAG_EOM_PENDING) != 0) {
|
1494 if (bp->b_iocmd == BIO_WRITE)
1495 bp->b_error = ENOSPC;
|
1494 if (bp->bio_cmd == BIO_WRITE) 1495 bp->bio_error = ENOSPC; |
1496 else
|
1497 bp->b_error = EIO;
|
1497 bp->bio_error = EIO; |
1498 } 1499 if ((softc->flags & SA_FLAG_EOF_PENDING) != 0) {
|
1500 bp->b_error = EIO;
|
1500 bp->bio_error = EIO; |
1501 } 1502 if ((softc->flags & SA_FLAG_EIO_PENDING) != 0) {
|
1503 bp->b_error = EIO;
|
1503 bp->bio_error = EIO; |
1504 } 1505 done_bp = bp;
|
1506 bp = bufq_first(&softc->buf_queue);
|
1506 bp = bioq_first(&softc->bio_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);
|
1524 bioq_remove(&softc->bio_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;
|
1530 bp->bio_bcount >> softc->blk_shift; |
1531 } else if (softc->media_blksize != 0) { 1532 length =
|
1533 bp->b_bcount / softc->media_blksize;
|
1533 bp->bio_bcount / softc->media_blksize; |
1534 } else {
|
1535 bp->b_error = EIO;
|
1535 bp->bio_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;
|
1546 length = bp->bio_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_iocmd == BIO_READ)?
|
1571 softc->dsreg = (bp->bio_cmd == BIO_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_iocmd == BIO_READ),
|
1574 MSG_SIMPLE_Q_TAG, (bp->bio_cmd == BIO_READ), |
1575 FALSE, (softc->flags & SA_FLAG_FIXED) != 0,
|
1576 length, bp->b_data, bp->b_bcount, SSD_FULL_SIZE,
|
1576 length, bp->bio_data, bp->bio_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);
|
1580 bp = bioq_first(&softc->bio_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;
|
1610 struct bio *bp; |
1611 int error; 1612 1613 softc->dsreg = MTIO_DSREG_REST;
|
1614 bp = (struct buf *)done_ccb->ccb_h.ccb_bp;
|
1614 bp = (struct bio *)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;
|
1627 struct bio *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_ioflags |= BIO_ERROR;
|
1642 while ((q_bp = bioq_first(&softc->bio_queue)) != NULL) { 1643 bioq_remove(&softc->bio_queue, q_bp); 1644 q_bp->bio_resid = q_bp->bio_bcount; 1645 q_bp->bio_error = EIO; 1646 q_bp->bio_flags |= BIO_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_ioflags |= BIO_ERROR;
|
1652 bp->bio_resid = bp->bio_bcount; 1653 bp->bio_error = error; 1654 bp->bio_flags |= BIO_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;
|
1659 bp->bio_resid = csio->resid; 1660 bp->bio_error = 0; |
1661 if (csio->resid != 0) {
|
1662 bp->b_ioflags |= BIO_ERROR;
|
1662 bp->bio_flags |= BIO_ERROR; |
1663 }
|
1664 if (bp->b_iocmd == BIO_WRITE) {
|
1664 if (bp->bio_cmd == BIO_WRITE) { |
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 >>
|
1672 l = bp->bio_bcount >> |
1673 softc->blk_shift; 1674 } else {
|
1675 l = bp->b_bcount /
|
1675 l = bp->bio_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) {
|
1691 if (error || bp->bio_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));
|
1694 bp->bio_resid, bp->bio_bcount)); |
1695 } 1696#endif
|
1697 devstat_end_transaction_buf(&softc->device_stats, bp);
|
1697 devstat_end_transaction_bio(&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 1832 if ((softc->quirks & SA_QUIRK_NODREAD) == 0) { 1833 scsi_sa_read_write(&ccb->csio, 0, sadone, 1834 MSG_SIMPLE_Q_TAG, 1, FALSE, 0, 8192, 1835 (void *) rblim, 8192, SSD_FULL_SIZE, 1836 120 * 60 * 1000); 1837 (void) cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1838 &softc->device_stats); 1839 QFRLS(ccb); 1840 scsi_rewind(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, 1841 FALSE, SSD_FULL_SIZE, REWIND_TIMEOUT); 1842 error = cam_periph_runccb(ccb, saerror, 0, 1843 SF_NO_PRINT | SF_RETRY_SELTO | SF_RETRY_UA, 1844 &softc->device_stats); 1845 QFRLS(ccb); 1846 if (error) { 1847 xpt_print_path(ccb->ccb_h.path); 1848 printf("unable to rewind after test read\n"); 1849 xpt_release_ccb(ccb); 1850 goto exit; 1851 } 1852 } 1853 1854 /* 1855 * Next off, determine block limits. 1856 */ 1857 scsi_read_block_limits(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, 1858 rblim, SSD_FULL_SIZE, 5000); 1859 1860 error = cam_periph_runccb(ccb, saerror, 0, 1861 SF_NO_PRINT | SF_RETRY_UA | SF_RETRY_SELTO, 1862 &softc->device_stats); 1863 QFRLS(ccb); 1864 xpt_release_ccb(ccb); 1865 1866 if (error != 0) { 1867 /* 1868 * If it's less than SCSI-2, READ BLOCK LIMITS is not 1869 * a MANDATORY command. Anyway- it doesn't matter- 1870 * we can proceed anyway. 1871 */ 1872 softc->blk_gran = 0; 1873 softc->max_blk = ~0; 1874 softc->min_blk = 0; 1875 } else { 1876 if (softc->scsi_rev >= SCSI_REV_3) { 1877 softc->blk_gran = RBL_GRAN(rblim); 1878 } else { 1879 softc->blk_gran = 0; 1880 } 1881 /* 1882 * We take max_blk == min_blk to mean a default to 1883 * fixed mode- but note that whatever we get out of 1884 * sagetparams below will actually determine whether 1885 * we are actually *in* fixed mode. 1886 */ 1887 softc->max_blk = scsi_3btoul(rblim->maximum); 1888 softc->min_blk = scsi_2btoul(rblim->minimum); 1889 1890 1891 } 1892 /* 1893 * Next, perform a mode sense to determine 1894 * current density, blocksize, compression etc. 1895 */ 1896 error = sagetparams(periph, SA_PARAM_ALL, 1897 &softc->media_blksize, 1898 &softc->media_density, 1899 &softc->media_numblks, 1900 &softc->buffer_mode, &write_protect, 1901 &softc->speed, &comp_supported, 1902 &comp_enabled, &softc->comp_algorithm, 1903 NULL); 1904 1905 if (error != 0) { 1906 /* 1907 * We could work a little harder here. We could 1908 * adjust our attempts to get information. It 1909 * might be an ancient tape drive. If someone 1910 * nudges us, we'll do that. 1911 */ 1912 goto exit; 1913 } 1914 1915 /* 1916 * If no quirk has determined that this is a device that is 1917 * preferred to be in fixed or variable mode, now is the time 1918 * to find out. 1919 */ 1920 if ((softc->quirks & (SA_QUIRK_FIXED|SA_QUIRK_VARIABLE)) == 0) { 1921 guessing = 1; 1922 /* 1923 * This could be expensive to find out. Luckily we 1924 * only need to do this once. If we start out in 1925 * 'default' mode, try and set ourselves to one 1926 * of the densities that would determine a wad 1927 * of other stuff. Go from highest to lowest. 1928 */ 1929 if (softc->media_density == SCSI_DEFAULT_DENSITY) { 1930 int i; 1931 static u_int8_t ctry[] = { 1932 SCSI_DENSITY_HALFINCH_PE, 1933 SCSI_DENSITY_HALFINCH_6250C, 1934 SCSI_DENSITY_HALFINCH_6250, 1935 SCSI_DENSITY_HALFINCH_1600, 1936 SCSI_DENSITY_HALFINCH_800, 1937 SCSI_DENSITY_QIC_4GB, 1938 SCSI_DENSITY_QIC_2GB, 1939 SCSI_DENSITY_QIC_525_320, 1940 SCSI_DENSITY_QIC_150, 1941 SCSI_DENSITY_QIC_120, 1942 SCSI_DENSITY_QIC_24, 1943 SCSI_DENSITY_QIC_11_9TRK, 1944 SCSI_DENSITY_QIC_11_4TRK, 1945 SCSI_DENSITY_QIC_1320, 1946 SCSI_DENSITY_QIC_3080, 1947 0 1948 }; 1949 for (i = 0; ctry[i]; i++) { 1950 error = sasetparams(periph, 1951 SA_PARAM_DENSITY, 0, ctry[i], 1952 0, SF_NO_PRINT); 1953 if (error == 0) { 1954 softc->media_density = ctry[i]; 1955 break; 1956 } 1957 } 1958 } 1959 switch (softc->media_density) { 1960 case SCSI_DENSITY_QIC_11_4TRK: 1961 case SCSI_DENSITY_QIC_11_9TRK: 1962 case SCSI_DENSITY_QIC_24: 1963 case SCSI_DENSITY_QIC_120: 1964 case SCSI_DENSITY_QIC_150: 1965 case SCSI_DENSITY_QIC_1320: 1966 case SCSI_DENSITY_QIC_3080: 1967 softc->quirks &= ~SA_QUIRK_2FM; 1968 softc->quirks |= SA_QUIRK_FIXED|SA_QUIRK_1FM; 1969 softc->last_media_blksize = 512; 1970 break; 1971 case SCSI_DENSITY_QIC_4GB: 1972 case SCSI_DENSITY_QIC_2GB: 1973 case SCSI_DENSITY_QIC_525_320: 1974 softc->quirks &= ~SA_QUIRK_2FM; 1975 softc->quirks |= SA_QUIRK_FIXED|SA_QUIRK_1FM; 1976 softc->last_media_blksize = 1024; 1977 break; 1978 default: 1979 softc->last_media_blksize = 1980 softc->media_blksize; 1981 softc->quirks |= SA_QUIRK_VARIABLE; 1982 break; 1983 } 1984 } 1985 1986 /* 1987 * If no quirk has determined that this is a device that needs 1988 * to have 2 Filemarks at EOD, now is the time to find out. 1989 */ 1990 1991 if ((softc->quirks & SA_QUIRK_2FM) == 0) { 1992 switch (softc->media_density) { 1993 case SCSI_DENSITY_HALFINCH_800: 1994 case SCSI_DENSITY_HALFINCH_1600: 1995 case SCSI_DENSITY_HALFINCH_6250: 1996 case SCSI_DENSITY_HALFINCH_6250C: 1997 case SCSI_DENSITY_HALFINCH_PE: 1998 softc->quirks &= ~SA_QUIRK_1FM; 1999 softc->quirks |= SA_QUIRK_2FM; 2000 break; 2001 default: 2002 break; 2003 } 2004 } 2005 2006 /* 2007 * Now validate that some info we got makes sense. 2008 */ 2009 if ((softc->max_blk < softc->media_blksize) || 2010 (softc->min_blk > softc->media_blksize && 2011 softc->media_blksize)) { 2012 xpt_print_path(ccb->ccb_h.path); 2013 printf("BLOCK LIMITS (%d..%d) could not match current " 2014 "block settings (%d)- adjusting\n", softc->min_blk, 2015 softc->max_blk, softc->media_blksize); 2016 softc->max_blk = softc->min_blk = 2017 softc->media_blksize; 2018 } 2019 2020 /* 2021 * Now put ourselves into the right frame of mind based 2022 * upon quirks... 2023 */ 2024tryagain: 2025 /* 2026 * If we want to be in FIXED mode and our current blocksize 2027 * is not equal to our last blocksize (if nonzero), try and 2028 * set ourselves to this last blocksize (as the 'preferred' 2029 * block size). The initial quirkmatch at registry sets the 2030 * initial 'last' blocksize. If, for whatever reason, this 2031 * 'last' blocksize is zero, set the blocksize to 512, 2032 * or min_blk if that's larger. 2033 */ 2034 if ((softc->quirks & SA_QUIRK_FIXED) && 2035 (softc->media_blksize != softc->last_media_blksize)) { 2036 softc->media_blksize = softc->last_media_blksize; 2037 if (softc->media_blksize == 0) { 2038 softc->media_blksize = 512; 2039 if (softc->media_blksize < softc->min_blk) { 2040 softc->media_blksize = softc->min_blk; 2041 } 2042 } 2043 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, 2044 softc->media_blksize, 0, 0, SF_NO_PRINT); 2045 if (error) { 2046 xpt_print_path(ccb->ccb_h.path); 2047 printf("unable to set fixed blocksize to %d\n", 2048 softc->media_blksize); 2049 goto exit; 2050 } 2051 } 2052 2053 if ((softc->quirks & SA_QUIRK_VARIABLE) && 2054 (softc->media_blksize != 0)) { 2055 softc->last_media_blksize = softc->media_blksize; 2056 softc->media_blksize = 0; 2057 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, 2058 0, 0, 0, SF_NO_PRINT); 2059 if (error) { 2060 /* 2061 * If this fails and we were guessing, just 2062 * assume that we got it wrong and go try 2063 * fixed block mode. Don't even check against 2064 * density code at this point. 2065 */ 2066 if (guessing) { 2067 softc->quirks &= ~SA_QUIRK_VARIABLE; 2068 softc->quirks |= SA_QUIRK_FIXED; 2069 if (softc->last_media_blksize == 0) 2070 softc->last_media_blksize = 512; 2071 goto tryagain; 2072 } 2073 xpt_print_path(ccb->ccb_h.path); 2074 printf("unable to set variable blocksize\n"); 2075 goto exit; 2076 } 2077 } 2078 2079 /* 2080 * Now that we have the current block size, 2081 * set up some parameters for sastart's usage. 2082 */ 2083 if (softc->media_blksize) { 2084 softc->flags |= SA_FLAG_FIXED; 2085 if (powerof2(softc->media_blksize)) { 2086 softc->blk_shift = 2087 ffs(softc->media_blksize) - 1; 2088 softc->blk_mask = softc->media_blksize - 1; 2089 } else { 2090 softc->blk_mask = ~0; 2091 softc->blk_shift = 0; 2092 } 2093 } else { 2094 /* 2095 * The SCSI-3 spec allows 0 to mean "unspecified". 2096 * The SCSI-1 spec allows 0 to mean 'infinite'. 2097 * 2098 * Either works here. 2099 */ 2100 if (softc->max_blk == 0) { 2101 softc->max_blk = ~0; 2102 } 2103 softc->blk_shift = 0; 2104 if (softc->blk_gran != 0) { 2105 softc->blk_mask = softc->blk_gran - 1; 2106 } else { 2107 softc->blk_mask = 0; 2108 } 2109 } 2110 2111 if (write_protect) 2112 softc->flags |= SA_FLAG_TAPE_WP; 2113 2114 if (comp_supported) { 2115 if (softc->saved_comp_algorithm == 0) 2116 softc->saved_comp_algorithm = 2117 softc->comp_algorithm; 2118 softc->flags |= SA_FLAG_COMP_SUPP; 2119 if (comp_enabled) 2120 softc->flags |= SA_FLAG_COMP_ENABLED; 2121 } else 2122 softc->flags |= SA_FLAG_COMP_UNSUPP; 2123 2124 if (softc->buffer_mode == SMH_SA_BUF_MODE_NOBUF) { 2125 error = sasetparams(periph, SA_PARAM_BUFF_MODE, 0, 2126 0, 0, SF_NO_PRINT); 2127 if (error == 0) 2128 softc->buffer_mode = SMH_SA_BUF_MODE_SIBUF; 2129 } 2130 2131 2132 if (error == 0) { 2133 softc->flags |= SA_FLAG_TAPE_MOUNTED; 2134 } 2135exit: 2136 if (rblim != NULL) 2137 free(rblim, M_TEMP); 2138 2139 if (error != 0) { 2140 softc->dsreg = MTIO_DSREG_NIL; 2141 } else { 2142 softc->fileno = softc->blkno = 0; 2143 softc->dsreg = MTIO_DSREG_REST; 2144 } 2145#ifdef SA_1FM_AT_EOD 2146 if ((softc->quirks & SA_QUIRK_2FM) == 0) 2147 softc->quirks |= SA_QUIRK_1FM; 2148#else 2149 if ((softc->quirks & SA_QUIRK_1FM) == 0) 2150 softc->quirks |= SA_QUIRK_2FM; 2151#endif 2152 } else 2153 xpt_release_ccb(ccb); 2154 2155 /* 2156 * If we return an error, we're not mounted any more, 2157 * so release any device reservation. 2158 */ 2159 if (error != 0) { 2160 (void) sareservereleaseunit(periph, FALSE); 2161 } 2162 return (error); 2163} 2164 2165static int 2166sacheckeod(struct cam_periph *periph) 2167{ 2168 int error; 2169 int markswanted; 2170 struct sa_softc *softc; 2171 2172 softc = (struct sa_softc *)periph->softc; 2173 markswanted = 0; 2174 2175 if ((softc->flags & SA_FLAG_TAPE_WRITTEN) != 0) { 2176 markswanted++; 2177 if (softc->quirks & SA_QUIRK_2FM) 2178 markswanted++; 2179 } 2180 2181 if (softc->filemarks < markswanted) { 2182 markswanted -= softc->filemarks; 2183 error = sawritefilemarks(periph, markswanted, FALSE); 2184 } else { 2185 error = 0; 2186 } 2187 return (error); 2188} 2189 2190static int 2191saerror(union ccb *ccb, u_int32_t cflgs, u_int32_t sflgs) 2192{ 2193 static const char *toobig = 2194 "%d-byte tape record bigger than suplied buffer\n"; 2195 struct cam_periph *periph; 2196 struct sa_softc *softc; 2197 struct ccb_scsiio *csio; 2198 struct scsi_sense_data *sense; 2199 u_int32_t resid = 0; 2200 int32_t info = 0; 2201 int error_code, sense_key, asc, ascq; 2202 int error, defer_action; 2203 2204 periph = xpt_path_periph(ccb->ccb_h.path); 2205 softc = (struct sa_softc *)periph->softc; 2206 csio = &ccb->csio; 2207 sense = &csio->sense_data; 2208 scsi_extract_sense(sense, &error_code, &sense_key, &asc, &ascq); 2209 error = 0; 2210 2211 /* 2212 * Calculate/latch up, any residuals... 2213 */ 2214 if ((csio->ccb_h.status & CAM_STATUS_MASK) == CAM_SCSI_STATUS_ERROR) { 2215 if ((sense->error_code & SSD_ERRCODE_VALID) != 0) { 2216 info = (int32_t) scsi_4btoul(sense->info); 2217 resid = info; 2218 if ((softc->flags & SA_FLAG_FIXED) != 0) 2219 resid *= softc->media_blksize; 2220 } else { 2221 resid = csio->dxfer_len; 2222 info = resid; 2223 if ((softc->flags & SA_FLAG_FIXED) != 0) { 2224 if (softc->media_blksize) 2225 info /= softc->media_blksize; 2226 } 2227 } 2228 if (csio->ccb_h.ccb_type == SA_CCB_BUFFER_IO) { 2229 bcopy((caddr_t) sense, (caddr_t) &softc->last_io_sense, 2230 sizeof (struct scsi_sense_data)); 2231 bcopy(csio->cdb_io.cdb_bytes, softc->last_io_cdb, 2232 (int) csio->cdb_len); 2233 softc->last_io_resid = resid; 2234 } else { 2235 bcopy((caddr_t) sense, (caddr_t) &softc->last_ctl_sense, 2236 sizeof (struct scsi_sense_data)); 2237 bcopy(csio->cdb_io.cdb_bytes, softc->last_ctl_cdb, 2238 (int) csio->cdb_len); 2239 softc->last_ctl_resid = resid; 2240 } 2241 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("Key 0x%x ASC/ASCQ 2242 0x%x 0x%x flags 0x%x resid %d dxfer_len %d\n", sense_key, 2243 asc, ascq, sense->flags & ~SSD_KEY_RESERVED, resid, 2244 csio->dxfer_len)); 2245 } else { 2246 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("Cam Status 0x%x\n", 2247 csio->ccb_h.status & CAM_STATUS_MASK)); 2248 } 2249 2250 /* 2251 * If it's neither a SCSI Check Condition Error nor a non-read/write 2252 * command, let the common code deal with it the error setting. 2253 */ 2254 if ((csio->ccb_h.status & CAM_STATUS_MASK) != CAM_SCSI_STATUS_ERROR || 2255 (csio->ccb_h.ccb_type == SA_CCB_WAITING)) { 2256 return (cam_periph_error(ccb, cflgs, sflgs, &softc->saved_ccb)); 2257 } 2258 2259 /* 2260 * Calculate whether we'll defer action. 2261 */ 2262 2263 if (resid > 0 && resid < csio->dxfer_len && 2264 (softc->flags & SA_FLAG_FIXED) != 0) { 2265 defer_action = TRUE; 2266 } else { 2267 defer_action = FALSE; 2268 } 2269 2270 /* 2271 * Handle filemark, end of tape, mismatched record sizes.... 2272 * From this point out, we're only handling read/write cases. 2273 * Handle writes && reads differently. 2274 */ 2275 2276 if (csio->cdb_io.cdb_bytes[0] == SA_WRITE) { 2277 if (sense->flags & SSD_FILEMARK) { 2278 xpt_print_path(csio->ccb_h.path); 2279 printf("filemark detected on write?\n"); 2280 if (softc->fileno != (daddr_t) -1) { 2281 softc->fileno++; 2282 softc->blkno = 0; 2283 } 2284 } 2285 if (sense->flags & SSD_EOM) { 2286 csio->resid = resid; 2287 if (defer_action) { 2288 error = -1; 2289 softc->flags |= SA_FLAG_EOM_PENDING; 2290 } else { 2291 error = ENOSPC; 2292 } 2293 } 2294 } else { 2295 if (sense_key == SSD_KEY_BLANK_CHECK) { 2296 csio->resid = resid; 2297 if (defer_action) { 2298 error = -1; 2299 softc->flags |= SA_FLAG_EOM_PENDING; 2300 } else { 2301 error = EIO; 2302 } 2303 } 2304 if (sense->flags & SSD_FILEMARK) { 2305 csio->resid = resid; 2306 if (defer_action) { 2307 error = -1; 2308 softc->flags |= SA_FLAG_EOF_PENDING; 2309 } 2310 /* 2311 * Unconditionally, if we detected a filemark on a read, 2312 * mark that we've run moved a file ahead. 2313 */ 2314 if (softc->fileno != (daddr_t) -1) { 2315 softc->fileno++; 2316 softc->blkno = 0; 2317 } 2318 } 2319 } 2320 /* 2321 * Incorrect Length usually applies to read, but can apply to writes. 2322 */ 2323 if (error == 0 && (sense->flags & SSD_ILI)) { 2324 if (info < 0) { 2325 xpt_print_path(csio->ccb_h.path); 2326 printf(toobig, csio->dxfer_len - info); 2327 csio->resid = csio->dxfer_len; 2328 error = EIO; 2329 } else { 2330 csio->resid = resid; 2331 if ((softc->flags & SA_FLAG_FIXED) != 0) { 2332 if (defer_action) 2333 softc->flags |= SA_FLAG_EIO_PENDING; 2334 else 2335 error = EIO; 2336 } 2337 /* 2338 * Bump the block number if we hadn't seen a filemark. 2339 * Do this independent of errors (we've moved anyway). 2340 */ 2341 if ((sense->flags & SSD_FILEMARK) == 0) { 2342 if (softc->blkno != (daddr_t) -1) { 2343 softc->blkno++; 2344 } 2345 } 2346 } 2347 } 2348 if (error == 0) 2349 return (cam_periph_error(ccb, cflgs, sflgs, &softc->saved_ccb)); 2350 2351 if (error == -1) 2352 return (0); 2353 else 2354 return (error); 2355} 2356 2357static int 2358sagetparams(struct cam_periph *periph, sa_params params_to_get, 2359 u_int32_t *blocksize, u_int8_t *density, u_int32_t *numblocks, 2360 int *buff_mode, u_int8_t *write_protect, u_int8_t *speed, 2361 int *comp_supported, int *comp_enabled, u_int32_t *comp_algorithm, 2362 sa_comp_t *tcs) 2363{ 2364 union ccb *ccb; 2365 void *mode_buffer; 2366 struct scsi_mode_header_6 *mode_hdr; 2367 struct scsi_mode_blk_desc *mode_blk; 2368 int mode_buffer_len; 2369 struct sa_softc *softc; 2370 u_int8_t cpage; 2371 int error; 2372 cam_status status; 2373 2374 softc = (struct sa_softc *)periph->softc; 2375 ccb = cam_periph_getccb(periph, 1); 2376 cpage = SA_DATA_COMPRESSION_PAGE; 2377 2378retry: 2379 mode_buffer_len = sizeof(*mode_hdr) + sizeof(*mode_blk); 2380 2381 if (params_to_get & SA_PARAM_COMPRESSION) { 2382 if (softc->quirks & SA_QUIRK_NOCOMP) { 2383 *comp_supported = FALSE; 2384 params_to_get &= ~SA_PARAM_COMPRESSION; 2385 } else 2386 mode_buffer_len += sizeof (sa_comp_t); 2387 } 2388 2389 mode_buffer = malloc(mode_buffer_len, M_TEMP, M_WAITOK); 2390 bzero(mode_buffer, mode_buffer_len); 2391 mode_hdr = (struct scsi_mode_header_6 *)mode_buffer; 2392 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 2393 2394 /* it is safe to retry this */ 2395 scsi_mode_sense(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 2396 SMS_PAGE_CTRL_CURRENT, (params_to_get & SA_PARAM_COMPRESSION) ? 2397 cpage : SMS_VENDOR_SPECIFIC_PAGE, mode_buffer, mode_buffer_len, 2398 SSD_FULL_SIZE, 5000); 2399 2400 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2401 &softc->device_stats); 2402 QFRLS(ccb); 2403 2404 status = ccb->ccb_h.status & CAM_STATUS_MASK; 2405 2406 if (error == EINVAL && (params_to_get & SA_PARAM_COMPRESSION) != 0) { 2407 /* 2408 * Hmm. Let's see if we can try another page... 2409 * If we've already done that, give up on compression 2410 * for this device and remember this for the future 2411 * and attempt the request without asking for compression 2412 * info. 2413 */ 2414 if (cpage == SA_DATA_COMPRESSION_PAGE) { 2415 cpage = SA_DEVICE_CONFIGURATION_PAGE; 2416 goto retry; 2417 } 2418 softc->quirks |= SA_QUIRK_NOCOMP; 2419 free(mode_buffer, M_TEMP); 2420 goto retry; 2421 } else if (status == CAM_SCSI_STATUS_ERROR) { 2422 /* Tell the user about the fatal error. */ 2423 scsi_sense_print(&ccb->csio); 2424 goto sagetparamsexit; 2425 } 2426 2427 /* 2428 * If the user only wants the compression information, and 2429 * the device doesn't send back the block descriptor, it's 2430 * no big deal. If the user wants more than just 2431 * compression, though, and the device doesn't pass back the 2432 * block descriptor, we need to send another mode sense to 2433 * get the block descriptor. 2434 */ 2435 if ((mode_hdr->blk_desc_len == 0) && 2436 (params_to_get & SA_PARAM_COMPRESSION) && 2437 (params_to_get & ~(SA_PARAM_COMPRESSION))) { 2438 2439 /* 2440 * Decrease the mode buffer length by the size of 2441 * the compression page, to make sure the data 2442 * there doesn't get overwritten. 2443 */ 2444 mode_buffer_len -= sizeof (sa_comp_t); 2445 2446 /* 2447 * Now move the compression page that we presumably 2448 * got back down the memory chunk a little bit so 2449 * it doesn't get spammed. 2450 */ 2451 bcopy(&mode_hdr[0], &mode_hdr[1], sizeof (sa_comp_t)); 2452 bzero(&mode_hdr[0], sizeof (mode_hdr[0])); 2453 2454 /* 2455 * Now, we issue another mode sense and just ask 2456 * for the block descriptor, etc. 2457 */ 2458 2459 scsi_mode_sense(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 2460 SMS_PAGE_CTRL_CURRENT, SMS_VENDOR_SPECIFIC_PAGE, 2461 mode_buffer, mode_buffer_len, SSD_FULL_SIZE, 5000); 2462 2463 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2464 &softc->device_stats); 2465 QFRLS(ccb); 2466 2467 if (error != 0) 2468 goto sagetparamsexit; 2469 } 2470 2471 if (params_to_get & SA_PARAM_BLOCKSIZE) 2472 *blocksize = scsi_3btoul(mode_blk->blklen); 2473 2474 if (params_to_get & SA_PARAM_NUMBLOCKS) 2475 *numblocks = scsi_3btoul(mode_blk->nblocks); 2476 2477 if (params_to_get & SA_PARAM_BUFF_MODE) 2478 *buff_mode = mode_hdr->dev_spec & SMH_SA_BUF_MODE_MASK; 2479 2480 if (params_to_get & SA_PARAM_DENSITY) 2481 *density = mode_blk->density; 2482 2483 if (params_to_get & SA_PARAM_WP) 2484 *write_protect = (mode_hdr->dev_spec & SMH_SA_WP)? TRUE : FALSE; 2485 2486 if (params_to_get & SA_PARAM_SPEED) 2487 *speed = mode_hdr->dev_spec & SMH_SA_SPEED_MASK; 2488 2489 if (params_to_get & SA_PARAM_COMPRESSION) { 2490 sa_comp_t *ntcs = (sa_comp_t *) &mode_blk[1]; 2491 if (cpage == SA_DATA_COMPRESSION_PAGE) { 2492 struct scsi_data_compression_page *cp = &ntcs->dcomp; 2493 *comp_supported = 2494 (cp->dce_and_dcc & SA_DCP_DCC)? TRUE : FALSE; 2495 *comp_enabled = 2496 (cp->dce_and_dcc & SA_DCP_DCE)? TRUE : FALSE; 2497 *comp_algorithm = scsi_4btoul(cp->comp_algorithm); 2498 } else { 2499 struct scsi_dev_conf_page *cp = &ntcs->dconf; 2500 /* 2501 * We don't really know whether this device supports 2502 * Data Compression if the the algorithm field is 2503 * zero. Just say we do. 2504 */ 2505 *comp_supported = TRUE; 2506 *comp_enabled = 2507 (cp->sel_comp_alg != SA_COMP_NONE)? TRUE : FALSE; 2508 *comp_algorithm = cp->sel_comp_alg; 2509 } 2510 if (tcs != NULL) 2511 bcopy(ntcs, tcs, sizeof (sa_comp_t)); 2512 } 2513 2514 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 2515 int idx; 2516 char *xyz = mode_buffer; 2517 xpt_print_path(periph->path); 2518 printf("Mode Sense Data="); 2519 for (idx = 0; idx < mode_buffer_len; idx++) 2520 printf(" 0x%02x", xyz[idx] & 0xff); 2521 printf("\n"); 2522 } 2523 2524sagetparamsexit: 2525 2526 xpt_release_ccb(ccb); 2527 free(mode_buffer, M_TEMP); 2528 return (error); 2529} 2530 2531/* 2532 * The purpose of this function is to set one of four different parameters 2533 * for a tape drive: 2534 * - blocksize 2535 * - density 2536 * - compression / compression algorithm 2537 * - buffering mode 2538 * 2539 * The assumption is that this will be called from saioctl(), and therefore 2540 * from a process context. Thus the waiting malloc calls below. If that 2541 * assumption ever changes, the malloc calls should be changed to be 2542 * NOWAIT mallocs. 2543 * 2544 * Any or all of the four parameters may be set when this function is 2545 * called. It should handle setting more than one parameter at once. 2546 */ 2547static int 2548sasetparams(struct cam_periph *periph, sa_params params_to_set, 2549 u_int32_t blocksize, u_int8_t density, u_int32_t calg, 2550 u_int32_t sense_flags) 2551{ 2552 struct sa_softc *softc; 2553 u_int32_t current_blocksize; 2554 u_int32_t current_calg; 2555 u_int8_t current_density; 2556 u_int8_t current_speed; 2557 int comp_enabled, comp_supported; 2558 void *mode_buffer; 2559 int mode_buffer_len; 2560 struct scsi_mode_header_6 *mode_hdr; 2561 struct scsi_mode_blk_desc *mode_blk; 2562 sa_comp_t *ccomp, *cpage; 2563 int buff_mode; 2564 union ccb *ccb = NULL; 2565 int error; 2566 2567 softc = (struct sa_softc *)periph->softc; 2568 2569 ccomp = malloc(sizeof (sa_comp_t), M_TEMP, M_WAITOK); 2570 2571 /* 2572 * Since it doesn't make sense to set the number of blocks, or 2573 * write protection, we won't try to get the current value. We 2574 * always want to get the blocksize, so we can set it back to the 2575 * proper value. 2576 */ 2577 error = sagetparams(periph, 2578 params_to_set | SA_PARAM_BLOCKSIZE | SA_PARAM_SPEED, 2579 ¤t_blocksize, ¤t_density, NULL, &buff_mode, NULL, 2580 ¤t_speed, &comp_supported, &comp_enabled, 2581 ¤t_calg, ccomp); 2582 2583 if (error != 0) { 2584 free(ccomp, M_TEMP); 2585 return (error); 2586 } 2587 2588 mode_buffer_len = sizeof(*mode_hdr) + sizeof(*mode_blk); 2589 if (params_to_set & SA_PARAM_COMPRESSION) 2590 mode_buffer_len += sizeof (sa_comp_t); 2591 2592 mode_buffer = malloc(mode_buffer_len, M_TEMP, M_WAITOK); 2593 bzero(mode_buffer, mode_buffer_len); 2594 2595 mode_hdr = (struct scsi_mode_header_6 *)mode_buffer; 2596 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 2597 2598 ccb = cam_periph_getccb(periph, 1); 2599 2600retry: 2601 2602 if (params_to_set & SA_PARAM_COMPRESSION) { 2603 if (mode_blk) { 2604 cpage = (sa_comp_t *)&mode_blk[1]; 2605 } else { 2606 cpage = (sa_comp_t *)&mode_hdr[1]; 2607 } 2608 bcopy(ccomp, cpage, sizeof (sa_comp_t)); 2609 cpage->hdr.pagecode &= ~0x80; 2610 } else 2611 cpage = NULL; 2612 2613 /* 2614 * If the caller wants us to set the blocksize, use the one they 2615 * pass in. Otherwise, use the blocksize we got back from the 2616 * mode select above. 2617 */ 2618 if (mode_blk) { 2619 if (params_to_set & SA_PARAM_BLOCKSIZE) 2620 scsi_ulto3b(blocksize, mode_blk->blklen); 2621 else 2622 scsi_ulto3b(current_blocksize, mode_blk->blklen); 2623 2624 /* 2625 * Set density if requested, else preserve old density. 2626 * SCSI_SAME_DENSITY only applies to SCSI-2 or better 2627 * devices, else density we've latched up in our softc. 2628 */ 2629 if (params_to_set & SA_PARAM_DENSITY) { 2630 mode_blk->density = density; 2631 } else if (softc->scsi_rev > SCSI_REV_CCS) { 2632 mode_blk->density = SCSI_SAME_DENSITY; 2633 } else { 2634 mode_blk->density = softc->media_density; 2635 } 2636 } 2637 2638 /* 2639 * For mode selects, these two fields must be zero. 2640 */ 2641 mode_hdr->data_length = 0; 2642 mode_hdr->medium_type = 0; 2643 2644 /* set the speed to the current value */ 2645 mode_hdr->dev_spec = current_speed; 2646 2647 /* set single-initiator buffering mode */ 2648 mode_hdr->dev_spec |= SMH_SA_BUF_MODE_SIBUF; 2649 2650 if (mode_blk) 2651 mode_hdr->blk_desc_len = sizeof(struct scsi_mode_blk_desc); 2652 else 2653 mode_hdr->blk_desc_len = 0; 2654 2655 /* 2656 * First, if the user wants us to set the compression algorithm or 2657 * just turn compression on, check to make sure that this drive 2658 * supports compression. 2659 */ 2660 if (params_to_set & SA_PARAM_COMPRESSION) { 2661 /* 2662 * If the compression algorithm is 0, disable compression. 2663 * If the compression algorithm is non-zero, enable 2664 * compression and set the compression type to the 2665 * specified compression algorithm, unless the algorithm is 2666 * MT_COMP_ENABLE. In that case, we look at the 2667 * compression algorithm that is currently set and if it is 2668 * non-zero, we leave it as-is. If it is zero, and we have 2669 * saved a compression algorithm from a time when 2670 * compression was enabled before, set the compression to 2671 * the saved value. 2672 */ 2673 switch (ccomp->hdr.pagecode & ~0x80) { 2674 case SA_DATA_COMPRESSION_PAGE: 2675 if (ccomp->dcomp.dce_and_dcc & SA_DCP_DCC) { 2676 struct scsi_data_compression_page *dcp = &cpage->dcomp; 2677 if (calg == 0) { 2678 /* 2679 * Disable compression, but leave the 2680 * decompression and the capability bit 2681 * alone. 2682 */ 2683 dcp->dce_and_dcc = SA_DCP_DCC; 2684 dcp->dde_and_red |= SA_DCP_DDE; 2685 break; 2686 } 2687 /* enable compression && decompression */ 2688 dcp->dce_and_dcc = SA_DCP_DCE | SA_DCP_DCC; 2689 dcp->dde_and_red |= SA_DCP_DDE; 2690 /* 2691 * If there, use compression algorithm from caller. 2692 * Otherwise, if there's a saved compression algorithm 2693 * and there is no current algorithm, use the saved 2694 * algorithm. Else parrot back what we got and hope 2695 * for the best. 2696 */ 2697 if (calg != MT_COMP_ENABLE) { 2698 scsi_ulto4b(calg, dcp->comp_algorithm); 2699 scsi_ulto4b(calg, dcp->decomp_algorithm); 2700 } else if (scsi_4btoul(dcp->comp_algorithm) == 0 && 2701 softc->saved_comp_algorithm != 0) { 2702 scsi_ulto4b(softc->saved_comp_algorithm, 2703 dcp->comp_algorithm); 2704 scsi_ulto4b(softc->saved_comp_algorithm, 2705 dcp->decomp_algorithm); 2706 } 2707 break; 2708 } 2709 case SA_DEVICE_CONFIGURATION_PAGE: 2710 { 2711 struct scsi_dev_conf_page *dcp = &cpage->dconf; 2712 if (calg == 0) { 2713 dcp->sel_comp_alg = SA_COMP_NONE; 2714 break; 2715 } 2716 if (calg != MT_COMP_ENABLE) { 2717 dcp->sel_comp_alg = calg; 2718 } else if (dcp->sel_comp_alg == SA_COMP_NONE && 2719 softc->saved_comp_algorithm != 0) { 2720 dcp->sel_comp_alg = softc->saved_comp_algorithm; 2721 } 2722 break; 2723 } 2724 default: 2725 /* 2726 * The drive doesn't seem to support compression, 2727 * so turn off the set compression bit. 2728 */ 2729 params_to_set &= ~SA_PARAM_COMPRESSION; 2730 xpt_print_path(periph->path); 2731 printf("device does not seem to support compression\n"); 2732 2733 /* 2734 * If that was the only thing the user wanted us to set, 2735 * clean up allocated resources and return with 2736 * 'operation not supported'. 2737 */ 2738 if (params_to_set == SA_PARAM_NONE) { 2739 free(mode_buffer, M_TEMP); 2740 xpt_release_ccb(ccb); 2741 return (ENODEV); 2742 } 2743 2744 /* 2745 * That wasn't the only thing the user wanted us to set. 2746 * So, decrease the stated mode buffer length by the 2747 * size of the compression mode page. 2748 */ 2749 mode_buffer_len -= sizeof(sa_comp_t); 2750 } 2751 } 2752 2753 /* It is safe to retry this operation */ 2754 scsi_mode_select(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, 2755 (params_to_set & SA_PARAM_COMPRESSION)? TRUE : FALSE, 2756 FALSE, mode_buffer, mode_buffer_len, SSD_FULL_SIZE, 5000); 2757 2758 error = cam_periph_runccb(ccb, saerror, 0, 2759 sense_flags, &softc->device_stats); 2760 QFRLS(ccb); 2761 2762 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 2763 int idx; 2764 char *xyz = mode_buffer; 2765 xpt_print_path(periph->path); 2766 printf("Err%d, Mode Select Data=", error); 2767 for (idx = 0; idx < mode_buffer_len; idx++) 2768 printf(" 0x%02x", xyz[idx] & 0xff); 2769 printf("\n"); 2770 } 2771 2772 2773 if (error) { 2774 /* 2775 * If we can, try without setting density/blocksize. 2776 */ 2777 if (mode_blk) { 2778 if ((params_to_set & 2779 (SA_PARAM_DENSITY|SA_PARAM_BLOCKSIZE)) == 0) { 2780 mode_blk = NULL; 2781 goto retry; 2782 } 2783 } else { 2784 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 2785 cpage = (sa_comp_t *)&mode_blk[1]; 2786 } 2787 2788 /* 2789 * If we were setting the blocksize, and that failed, we 2790 * want to set it to its original value. If we weren't 2791 * setting the blocksize, we don't want to change it. 2792 */ 2793 scsi_ulto3b(current_blocksize, mode_blk->blklen); 2794 2795 /* 2796 * Set density if requested, else preserve old density. 2797 * SCSI_SAME_DENSITY only applies to SCSI-2 or better 2798 * devices, else density we've latched up in our softc. 2799 */ 2800 if (params_to_set & SA_PARAM_DENSITY) { 2801 mode_blk->density = current_density; 2802 } else if (softc->scsi_rev > SCSI_REV_CCS) { 2803 mode_blk->density = SCSI_SAME_DENSITY; 2804 } else { 2805 mode_blk->density = softc->media_density; 2806 } 2807 2808 if (params_to_set & SA_PARAM_COMPRESSION) 2809 bcopy(ccomp, cpage, sizeof (sa_comp_t)); 2810 2811 /* 2812 * The retry count is the only CCB field that might have been 2813 * changed that we care about, so reset it back to 1. 2814 */ 2815 ccb->ccb_h.retry_count = 1; 2816 cam_periph_runccb(ccb, saerror, 0, sense_flags, 2817 &softc->device_stats); 2818 QFRLS(ccb); 2819 } 2820 2821 xpt_release_ccb(ccb); 2822 2823 if (ccomp != NULL) 2824 free(ccomp, M_TEMP); 2825 2826 if (params_to_set & SA_PARAM_COMPRESSION) { 2827 if (error) { 2828 softc->flags &= ~SA_FLAG_COMP_ENABLED; 2829 /* 2830 * Even if we get an error setting compression, 2831 * do not say that we don't support it. We could 2832 * have been wrong, or it may be media specific. 2833 * softc->flags &= ~SA_FLAG_COMP_SUPP; 2834 */ 2835 softc->saved_comp_algorithm = softc->comp_algorithm; 2836 softc->comp_algorithm = 0; 2837 } else { 2838 softc->flags |= SA_FLAG_COMP_ENABLED; 2839 softc->comp_algorithm = calg; 2840 } 2841 } 2842 2843 free(mode_buffer, M_TEMP); 2844 return (error); 2845} 2846 2847static void 2848saprevent(struct cam_periph *periph, int action) 2849{ 2850 struct sa_softc *softc; 2851 union ccb *ccb; 2852 int error, sf; 2853 2854 softc = (struct sa_softc *)periph->softc; 2855 2856 if ((action == PR_ALLOW) && (softc->flags & SA_FLAG_TAPE_LOCKED) == 0) 2857 return; 2858 if ((action == PR_PREVENT) && (softc->flags & SA_FLAG_TAPE_LOCKED) != 0) 2859 return; 2860 2861 /* 2862 * We can be quiet about illegal requests. 2863 */ 2864 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 2865 sf = 0; 2866 } else 2867 sf = SF_QUIET_IR; 2868 2869 ccb = cam_periph_getccb(periph, 1); 2870 2871 /* It is safe to retry this operation */ 2872 scsi_prevent(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, action, 2873 SSD_FULL_SIZE, 100000); 2874 2875 error = cam_periph_runccb(ccb, saerror, 0, sf, &softc->device_stats); 2876 QFRLS(ccb); 2877 if (error == 0) { 2878 if (action == PR_ALLOW) 2879 softc->flags &= ~SA_FLAG_TAPE_LOCKED; 2880 else 2881 softc->flags |= SA_FLAG_TAPE_LOCKED; 2882 } 2883 2884 xpt_release_ccb(ccb); 2885} 2886 2887static int 2888sarewind(struct cam_periph *periph) 2889{ 2890 union ccb *ccb; 2891 struct sa_softc *softc; 2892 int error; 2893 2894 softc = (struct sa_softc *)periph->softc; 2895 2896 ccb = cam_periph_getccb(periph, 1); 2897 2898 /* It is safe to retry this operation */ 2899 scsi_rewind(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 2900 SSD_FULL_SIZE, REWIND_TIMEOUT); 2901 2902 softc->dsreg = MTIO_DSREG_REW; 2903 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 2904 softc->dsreg = MTIO_DSREG_REST; 2905 2906 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 2907 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 2908 2909 xpt_release_ccb(ccb); 2910 if (error == 0) 2911 softc->fileno = softc->blkno = (daddr_t) 0; 2912 else 2913 softc->fileno = softc->blkno = (daddr_t) -1; 2914 return (error); 2915} 2916 2917static int 2918saspace(struct cam_periph *periph, int count, scsi_space_code code) 2919{ 2920 union ccb *ccb; 2921 struct sa_softc *softc; 2922 int error; 2923 2924 softc = (struct sa_softc *)periph->softc; 2925 2926 ccb = cam_periph_getccb(periph, 1); 2927 2928 /* This cannot be retried */ 2929 2930 scsi_space(&ccb->csio, 0, sadone, MSG_SIMPLE_Q_TAG, code, count, 2931 SSD_FULL_SIZE, SPACE_TIMEOUT); 2932 2933 softc->dsreg = (count < 0)? MTIO_DSREG_REV : MTIO_DSREG_FWD; 2934 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 2935 softc->dsreg = MTIO_DSREG_REST; 2936 2937 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 2938 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 2939 2940 xpt_release_ccb(ccb); 2941 2942 /* 2943 * If a spacing operation has failed, we need to invalidate 2944 * this mount. 2945 * 2946 * If the spacing operation was setmarks or to end of recorded data, 2947 * we no longer know our relative position. 2948 * 2949 * We are not managing residuals here (really). 2950 */ 2951 if (error) { 2952 softc->fileno = softc->blkno = (daddr_t) -1; 2953 } else if (code == SS_SETMARKS || code == SS_EOD) { 2954 softc->fileno = softc->blkno = (daddr_t) -1; 2955 } else if (code == SS_FILEMARKS && softc->fileno != (daddr_t) -1) { 2956 softc->fileno += count; 2957 softc->blkno = 0; 2958 } else if (code == SS_BLOCKS && softc->blkno != (daddr_t) -1) { 2959 softc->blkno += count; 2960 } 2961 return (error); 2962} 2963 2964static int 2965sawritefilemarks(struct cam_periph *periph, int nmarks, int setmarks) 2966{ 2967 union ccb *ccb; 2968 struct sa_softc *softc; 2969 int error; 2970 2971 softc = (struct sa_softc *)periph->softc; 2972 2973 ccb = cam_periph_getccb(periph, 1); 2974 2975 softc->dsreg = MTIO_DSREG_FMK; 2976 /* this *must* not be retried */ 2977 scsi_write_filemarks(&ccb->csio, 0, sadone, MSG_SIMPLE_Q_TAG, 2978 FALSE, setmarks, nmarks, SSD_FULL_SIZE, 60000); 2979 softc->dsreg = MTIO_DSREG_REST; 2980 2981 2982 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 2983 2984 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 2985 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 2986 2987 /* 2988 * XXXX: Get back the actual number of filemarks written 2989 * XXXX: (there can be a residual). 2990 */ 2991 if (error == 0 && nmarks) { 2992 struct sa_softc *softc = (struct sa_softc *)periph->softc; 2993 softc->filemarks += nmarks; 2994 } 2995 xpt_release_ccb(ccb); 2996 2997 /* 2998 * Update relative positions (if we're doing that). 2999 */ 3000 if (error) { 3001 softc->fileno = softc->blkno = (daddr_t) -1; 3002 } else if (softc->fileno != (daddr_t) -1) { 3003 softc->fileno += nmarks; 3004 softc->blkno = 0; 3005 } 3006 return (error); 3007} 3008 3009static int 3010sardpos(struct cam_periph *periph, int hard, u_int32_t *blkptr) 3011{ 3012 struct scsi_tape_position_data loc; 3013 union ccb *ccb; 3014 struct sa_softc *softc = (struct sa_softc *)periph->softc; 3015 int error; 3016 3017 /* 3018 * We have to try and flush any buffered writes here if we were writing. 3019 * 3020 * The SCSI specification is vague enough about situations like 3021 * different sized blocks in a tape drive buffer as to make one 3022 * wary about trying to figure out the actual block location value 3023 * if data is in the tape drive buffer. 3024 */ 3025 ccb = cam_periph_getccb(periph, 1); 3026 3027 if (softc->flags & SA_FLAG_TAPE_WRITTEN) { 3028 error = sawritefilemarks(periph, 0, 0); 3029 if (error && error != EACCES) 3030 return (error); 3031 } 3032 3033 scsi_read_position(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, 3034 hard, &loc, SSD_FULL_SIZE, 5000); 3035 softc->dsreg = MTIO_DSREG_RBSY; 3036 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 3037 softc->dsreg = MTIO_DSREG_REST; 3038 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3039 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, 0); 3040 3041 if (error == 0) { 3042 if (loc.flags & SA_RPOS_UNCERTAIN) { 3043 error = EINVAL; /* nothing is certain */ 3044 } else { 3045#if 0 3046 u_int32_t firstblk, lastblk, nbufblk, nbufbyte; 3047 3048 firstblk = scsi_4btoul(loc.firstblk); 3049 lastblk = scsi_4btoul(loc.lastblk); 3050 nbufblk = scsi_4btoul(loc.nbufblk); 3051 nbufbyte = scsi_4btoul(loc.nbufbyte); 3052 if (lastblk || nbufblk || nbufbyte) { 3053 xpt_print_path(periph->path); 3054 printf("rdpos firstblk 0x%x lastblk 0x%x bufblk" 3055 " 0x%x bufbyte 0x%x\n", firstblk, lastblk, 3056 nbufblk, nbufbyte); 3057 } 3058 *blkptr = firstblk; 3059#else 3060 *blkptr = scsi_4btoul(loc.firstblk); 3061#endif 3062 } 3063 } 3064 3065 xpt_release_ccb(ccb); 3066 return (error); 3067} 3068 3069static int 3070sasetpos(struct cam_periph *periph, int hard, u_int32_t *blkptr) 3071{ 3072 union ccb *ccb; 3073 struct sa_softc *softc; 3074 int error; 3075 3076 /* 3077 * We used to try and flush any buffered writes here. 3078 * Now we push this onto user applications to either 3079 * flush the pending writes themselves (via a zero count 3080 * WRITE FILEMARKS command) or they can trust their tape 3081 * drive to do this correctly for them. 3082 */ 3083 3084 softc = (struct sa_softc *)periph->softc; 3085 ccb = cam_periph_getccb(periph, 1); 3086 3087 3088 scsi_set_position(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, 3089 hard, *blkptr, SSD_FULL_SIZE, 60 * 60 * 1000); 3090 3091 softc->dsreg = MTIO_DSREG_POS; 3092 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 3093 softc->dsreg = MTIO_DSREG_REST; 3094 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3095 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, 0); 3096 xpt_release_ccb(ccb); 3097 /* 3098 * Note relative file && block number position as now unknown. 3099 */ 3100 softc->fileno = softc->blkno = (daddr_t) -1; 3101 return (error); 3102} 3103 3104static int 3105saretension(struct cam_periph *periph) 3106{ 3107 union ccb *ccb; 3108 struct sa_softc *softc; 3109 int error; 3110 3111 softc = (struct sa_softc *)periph->softc; 3112 3113 ccb = cam_periph_getccb(periph, 1); 3114 3115 /* It is safe to retry this operation */ 3116 scsi_load_unload(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 3117 FALSE, TRUE, TRUE, SSD_FULL_SIZE, ERASE_TIMEOUT); 3118 3119 softc->dsreg = MTIO_DSREG_TEN; 3120 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 3121 softc->dsreg = MTIO_DSREG_REST; 3122 3123 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3124 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 3125 xpt_release_ccb(ccb); 3126 if (error == 0) 3127 softc->fileno = softc->blkno = (daddr_t) 0; 3128 else 3129 softc->fileno = softc->blkno = (daddr_t) -1; 3130 return (error); 3131} 3132 3133static int 3134sareservereleaseunit(struct cam_periph *periph, int reserve) 3135{ 3136 union ccb *ccb; 3137 struct sa_softc *softc; 3138 int error; 3139 3140 softc = (struct sa_softc *)periph->softc; 3141 ccb = cam_periph_getccb(periph, 1); 3142 3143 /* It is safe to retry this operation */ 3144 scsi_reserve_release_unit(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, 3145 FALSE, 0, SSD_FULL_SIZE, 5000, reserve); 3146 softc->dsreg = MTIO_DSREG_RBSY; 3147 error = cam_periph_runccb(ccb, saerror, 0, 3148 SF_RETRY_UA | SF_NO_PRINT, &softc->device_stats); 3149 softc->dsreg = MTIO_DSREG_REST; 3150 QFRLS(ccb); 3151 xpt_release_ccb(ccb); 3152 3153 /* 3154 * If the error was Illegal Request, then the device doesn't support 3155 * RESERVE/RELEASE. This is not an error. 3156 */ 3157 if (error == EINVAL) { 3158 error = 0; 3159 } 3160 3161 return (error); 3162} 3163 3164static int 3165saloadunload(struct cam_periph *periph, int load) 3166{ 3167 union ccb *ccb; 3168 struct sa_softc *softc; 3169 int error; 3170 3171 softc = (struct sa_softc *)periph->softc; 3172 3173 ccb = cam_periph_getccb(periph, 1); 3174 3175 /* It is safe to retry this operation */ 3176 scsi_load_unload(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 3177 FALSE, FALSE, load, SSD_FULL_SIZE, REWIND_TIMEOUT); 3178 3179 softc->dsreg = (load)? MTIO_DSREG_LD : MTIO_DSREG_UNL; 3180 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 3181 softc->dsreg = MTIO_DSREG_REST; 3182 QFRLS(ccb); 3183 xpt_release_ccb(ccb); 3184 3185 if (error || load == 0) 3186 softc->fileno = softc->blkno = (daddr_t) -1; 3187 else if (error == 0) 3188 softc->fileno = softc->blkno = (daddr_t) 0; 3189 return (error); 3190} 3191 3192static int 3193saerase(struct cam_periph *periph, int longerase) 3194{ 3195 3196 union ccb *ccb; 3197 struct sa_softc *softc; 3198 int error; 3199 3200 softc = (struct sa_softc *)periph->softc; 3201 3202 ccb = cam_periph_getccb(periph, 1); 3203 3204 scsi_erase(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, FALSE, longerase, 3205 SSD_FULL_SIZE, ERASE_TIMEOUT); 3206 3207 softc->dsreg = MTIO_DSREG_ZER; 3208 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 3209 softc->dsreg = MTIO_DSREG_REST; 3210 3211 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3212 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 3213 xpt_release_ccb(ccb); 3214 return (error); 3215} 3216 3217#endif /* _KERNEL */ 3218 3219/* 3220 * Read tape block limits command. 3221 */ 3222void 3223scsi_read_block_limits(struct ccb_scsiio *csio, u_int32_t retries, 3224 void (*cbfcnp)(struct cam_periph *, union ccb *), 3225 u_int8_t tag_action, 3226 struct scsi_read_block_limits_data *rlimit_buf, 3227 u_int8_t sense_len, u_int32_t timeout) 3228{ 3229 struct scsi_read_block_limits *scsi_cmd; 3230 3231 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_IN, tag_action, 3232 (u_int8_t *)rlimit_buf, sizeof(*rlimit_buf), sense_len, 3233 sizeof(*scsi_cmd), timeout); 3234 3235 scsi_cmd = (struct scsi_read_block_limits *)&csio->cdb_io.cdb_bytes; 3236 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3237 scsi_cmd->opcode = READ_BLOCK_LIMITS; 3238} 3239 3240void 3241scsi_sa_read_write(struct ccb_scsiio *csio, u_int32_t retries, 3242 void (*cbfcnp)(struct cam_periph *, union ccb *), 3243 u_int8_t tag_action, int readop, int sli, 3244 int fixed, u_int32_t length, u_int8_t *data_ptr, 3245 u_int32_t dxfer_len, u_int8_t sense_len, u_int32_t timeout) 3246{ 3247 struct scsi_sa_rw *scsi_cmd; 3248 3249 scsi_cmd = (struct scsi_sa_rw *)&csio->cdb_io.cdb_bytes; 3250 scsi_cmd->opcode = readop ? SA_READ : SA_WRITE; 3251 scsi_cmd->sli_fixed = 0; 3252 if (sli && readop) 3253 scsi_cmd->sli_fixed |= SAR_SLI; 3254 if (fixed) 3255 scsi_cmd->sli_fixed |= SARW_FIXED; 3256 scsi_ulto3b(length, scsi_cmd->length); 3257 scsi_cmd->control = 0; 3258 3259 cam_fill_csio(csio, retries, cbfcnp, readop ? CAM_DIR_IN : CAM_DIR_OUT, 3260 tag_action, data_ptr, dxfer_len, sense_len, 3261 sizeof(*scsi_cmd), timeout); 3262} 3263 3264void 3265scsi_load_unload(struct ccb_scsiio *csio, u_int32_t retries, 3266 void (*cbfcnp)(struct cam_periph *, union ccb *), 3267 u_int8_t tag_action, int immediate, int eot, 3268 int reten, int load, u_int8_t sense_len, 3269 u_int32_t timeout) 3270{ 3271 struct scsi_load_unload *scsi_cmd; 3272 3273 scsi_cmd = (struct scsi_load_unload *)&csio->cdb_io.cdb_bytes; 3274 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3275 scsi_cmd->opcode = LOAD_UNLOAD; 3276 if (immediate) 3277 scsi_cmd->immediate = SLU_IMMED; 3278 if (eot) 3279 scsi_cmd->eot_reten_load |= SLU_EOT; 3280 if (reten) 3281 scsi_cmd->eot_reten_load |= SLU_RETEN; 3282 if (load) 3283 scsi_cmd->eot_reten_load |= SLU_LOAD; 3284 3285 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, 3286 NULL, 0, sense_len, sizeof(*scsi_cmd), timeout); 3287} 3288 3289void 3290scsi_rewind(struct ccb_scsiio *csio, u_int32_t retries, 3291 void (*cbfcnp)(struct cam_periph *, union ccb *), 3292 u_int8_t tag_action, int immediate, u_int8_t sense_len, 3293 u_int32_t timeout) 3294{ 3295 struct scsi_rewind *scsi_cmd; 3296 3297 scsi_cmd = (struct scsi_rewind *)&csio->cdb_io.cdb_bytes; 3298 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3299 scsi_cmd->opcode = REWIND; 3300 if (immediate) 3301 scsi_cmd->immediate = SREW_IMMED; 3302 3303 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3304 0, sense_len, sizeof(*scsi_cmd), timeout); 3305} 3306 3307void 3308scsi_space(struct ccb_scsiio *csio, u_int32_t retries, 3309 void (*cbfcnp)(struct cam_periph *, union ccb *), 3310 u_int8_t tag_action, scsi_space_code code, 3311 u_int32_t count, u_int8_t sense_len, u_int32_t timeout) 3312{ 3313 struct scsi_space *scsi_cmd; 3314 3315 scsi_cmd = (struct scsi_space *)&csio->cdb_io.cdb_bytes; 3316 scsi_cmd->opcode = SPACE; 3317 scsi_cmd->code = code; 3318 scsi_ulto3b(count, scsi_cmd->count); 3319 scsi_cmd->control = 0; 3320 3321 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3322 0, sense_len, sizeof(*scsi_cmd), timeout); 3323} 3324 3325void 3326scsi_write_filemarks(struct ccb_scsiio *csio, u_int32_t retries, 3327 void (*cbfcnp)(struct cam_periph *, union ccb *), 3328 u_int8_t tag_action, int immediate, int setmark, 3329 u_int32_t num_marks, u_int8_t sense_len, 3330 u_int32_t timeout) 3331{ 3332 struct scsi_write_filemarks *scsi_cmd; 3333 3334 scsi_cmd = (struct scsi_write_filemarks *)&csio->cdb_io.cdb_bytes; 3335 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3336 scsi_cmd->opcode = WRITE_FILEMARKS; 3337 if (immediate) 3338 scsi_cmd->byte2 |= SWFMRK_IMMED; 3339 if (setmark) 3340 scsi_cmd->byte2 |= SWFMRK_WSMK; 3341 3342 scsi_ulto3b(num_marks, scsi_cmd->num_marks); 3343 3344 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3345 0, sense_len, sizeof(*scsi_cmd), timeout); 3346} 3347 3348/* 3349 * The reserve and release unit commands differ only by their opcodes. 3350 */ 3351void 3352scsi_reserve_release_unit(struct ccb_scsiio *csio, u_int32_t retries, 3353 void (*cbfcnp)(struct cam_periph *, union ccb *), 3354 u_int8_t tag_action, int third_party, 3355 int third_party_id, u_int8_t sense_len, 3356 u_int32_t timeout, int reserve) 3357{ 3358 struct scsi_reserve_release_unit *scsi_cmd; 3359 3360 scsi_cmd = (struct scsi_reserve_release_unit *)&csio->cdb_io.cdb_bytes; 3361 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3362 3363 if (reserve) 3364 scsi_cmd->opcode = RESERVE_UNIT; 3365 else 3366 scsi_cmd->opcode = RELEASE_UNIT; 3367 3368 if (third_party) { 3369 scsi_cmd->lun_thirdparty |= SRRU_3RD_PARTY; 3370 scsi_cmd->lun_thirdparty |= 3371 ((third_party_id << SRRU_3RD_SHAMT) & SRRU_3RD_MASK); 3372 } 3373 3374 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3375 0, sense_len, sizeof(*scsi_cmd), timeout); 3376} 3377 3378void 3379scsi_erase(struct ccb_scsiio *csio, u_int32_t retries, 3380 void (*cbfcnp)(struct cam_periph *, union ccb *), 3381 u_int8_t tag_action, int immediate, int long_erase, 3382 u_int8_t sense_len, u_int32_t timeout) 3383{ 3384 struct scsi_erase *scsi_cmd; 3385 3386 scsi_cmd = (struct scsi_erase *)&csio->cdb_io.cdb_bytes; 3387 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3388 3389 scsi_cmd->opcode = ERASE; 3390 3391 if (immediate) 3392 scsi_cmd->lun_imm_long |= SE_IMMED; 3393 3394 if (long_erase) 3395 scsi_cmd->lun_imm_long |= SE_LONG; 3396 3397 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3398 0, sense_len, sizeof(*scsi_cmd), timeout); 3399} 3400 3401/* 3402 * Read Tape Position command. 3403 */ 3404void 3405scsi_read_position(struct ccb_scsiio *csio, u_int32_t retries, 3406 void (*cbfcnp)(struct cam_periph *, union ccb *), 3407 u_int8_t tag_action, int hardsoft, 3408 struct scsi_tape_position_data *sbp, 3409 u_int8_t sense_len, u_int32_t timeout) 3410{ 3411 struct scsi_tape_read_position *scmd; 3412 3413 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_IN, tag_action, 3414 (u_int8_t *)sbp, sizeof (*sbp), sense_len, sizeof(*scmd), timeout); 3415 scmd = (struct scsi_tape_read_position *)&csio->cdb_io.cdb_bytes; 3416 bzero(scmd, sizeof(*scmd)); 3417 scmd->opcode = READ_POSITION; 3418 scmd->byte1 = hardsoft; 3419} 3420 3421/* 3422 * Set Tape Position command. 3423 */ 3424void 3425scsi_set_position(struct ccb_scsiio *csio, u_int32_t retries, 3426 void (*cbfcnp)(struct cam_periph *, union ccb *), 3427 u_int8_t tag_action, int hardsoft, u_int32_t blkno, 3428 u_int8_t sense_len, u_int32_t timeout) 3429{ 3430 struct scsi_tape_locate *scmd; 3431 3432 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, 3433 (u_int8_t *)NULL, 0, sense_len, sizeof(*scmd), timeout); 3434 scmd = (struct scsi_tape_locate *)&csio->cdb_io.cdb_bytes; 3435 bzero(scmd, sizeof(*scmd)); 3436 scmd->opcode = LOCATE; 3437 if (hardsoft) 3438 scmd->byte1 |= SA_SPOS_BT; 3439 scsi_ulto4b(blkno, scmd->blkaddr); 3440}
|