scsi_sa.c revision 83366
1/* 2 * $FreeBSD: head/sys/cam/scsi/scsi_sa.c 83366 2001-09-12 08:38:13Z julian $ 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/bio.h> 40#include <sys/malloc.h> 41#include <sys/mtio.h> 42#ifdef _KERNEL 43#include <sys/conf.h> 44#endif 45#include <sys/devicestat.h> 46#include <machine/limits.h> 47 48#ifndef _KERNEL 49#include <stdio.h> 50#include <string.h> 51#endif 52 53#include <cam/cam.h> 54#include <cam/cam_ccb.h> 55#include <cam/cam_extend.h> 56#include <cam/cam_periph.h> 57#include <cam/cam_xpt_periph.h> 58#include <cam/cam_debug.h> 59 60#include <cam/scsi/scsi_all.h> 61#include <cam/scsi/scsi_message.h> 62#include <cam/scsi/scsi_sa.h> 63 64#ifdef _KERNEL 65 66#include <opt_sa.h> 67 68#ifndef SA_IO_TIMEOUT 69#define SA_IO_TIMEOUT 4 70#endif 71#ifndef SA_SPACE_TIMEOUT 72#define SA_SPACE_TIMEOUT 1 * 60 73#endif 74#ifndef SA_REWIND_TIMEOUT 75#define SA_REWIND_TIMEOUT 2 * 60 76#endif 77#ifndef SA_ERASE_TIMEOUT 78#define SA_ERASE_TIMEOUT 4 * 60 79#endif 80 81#define SCSIOP_TIMEOUT (60 * 1000) /* not an option */ 82 83#define IO_TIMEOUT (SA_IO_TIMEOUT * 60 * 1000) 84#define REWIND_TIMEOUT (SA_REWIND_TIMEOUT * 60 * 1000) 85#define ERASE_TIMEOUT (SA_ERASE_TIMEOUT * 60 * 1000) 86#define SPACE_TIMEOUT (SA_SPACE_TIMEOUT * 60 * 1000) 87 88/* 89 * Additional options that can be set for config: SA_1FM_AT_EOT 90 */ 91 92#ifndef UNUSED_PARAMETER 93#define UNUSED_PARAMETER(x) x = x 94#endif 95 96#define QFRLS(ccb) \ 97 if (((ccb)->ccb_h.status & CAM_DEV_QFRZN) != 0) \ 98 cam_release_devq((ccb)->ccb_h.path, 0, 0, 0, FALSE) 99 100/* 101 * Driver states 102 */ 103 104 105typedef enum { 106 SA_STATE_NORMAL, SA_STATE_ABNORMAL 107} sa_state; 108 109#define ccb_pflags ppriv_field0 110#define ccb_bp ppriv_ptr1 111 112#define SA_CCB_BUFFER_IO 0x0 113#define SA_CCB_WAITING 0x1 114#define SA_CCB_TYPEMASK 0x1 115#define SA_POSITION_UPDATED 0x2 116 117#define Set_CCB_Type(x, type) \ 118 x->ccb_h.ccb_pflags &= ~SA_CCB_TYPEMASK; \ 119 x->ccb_h.ccb_pflags |= type 120 121#define CCB_Type(x) (x->ccb_h.ccb_pflags & SA_CCB_TYPEMASK) 122 123 124 125typedef enum { 126 SA_FLAG_OPEN = 0x0001, 127 SA_FLAG_FIXED = 0x0002, 128 SA_FLAG_TAPE_LOCKED = 0x0004, 129 SA_FLAG_TAPE_MOUNTED = 0x0008, 130 SA_FLAG_TAPE_WP = 0x0010, 131 SA_FLAG_TAPE_WRITTEN = 0x0020, 132 SA_FLAG_EOM_PENDING = 0x0040, 133 SA_FLAG_EIO_PENDING = 0x0080, 134 SA_FLAG_EOF_PENDING = 0x0100, 135 SA_FLAG_ERR_PENDING = (SA_FLAG_EOM_PENDING|SA_FLAG_EIO_PENDING| 136 SA_FLAG_EOF_PENDING), 137 SA_FLAG_INVALID = 0x0200, 138 SA_FLAG_COMP_ENABLED = 0x0400, 139 SA_FLAG_COMP_SUPP = 0x0800, 140 SA_FLAG_COMP_UNSUPP = 0x1000, 141 SA_FLAG_TAPE_FROZEN = 0x2000 142} sa_flags; 143 144typedef enum { 145 SA_MODE_REWIND = 0x00, 146 SA_MODE_NOREWIND = 0x01, 147 SA_MODE_OFFLINE = 0x02 148} sa_mode; 149 150typedef enum { 151 SA_PARAM_NONE = 0x00, 152 SA_PARAM_BLOCKSIZE = 0x01, 153 SA_PARAM_DENSITY = 0x02, 154 SA_PARAM_COMPRESSION = 0x04, 155 SA_PARAM_BUFF_MODE = 0x08, 156 SA_PARAM_NUMBLOCKS = 0x10, 157 SA_PARAM_WP = 0x20, 158 SA_PARAM_SPEED = 0x40, 159 SA_PARAM_ALL = 0x7f 160} sa_params; 161 162typedef enum { 163 SA_QUIRK_NONE = 0x00, 164 SA_QUIRK_NOCOMP = 0x01, /* Can't deal with compression at all */ 165 SA_QUIRK_FIXED = 0x02, /* Force fixed mode */ 166 SA_QUIRK_VARIABLE = 0x04, /* Force variable mode */ 167 SA_QUIRK_2FM = 0x08, /* Needs Two File Marks at EOD */ 168 SA_QUIRK_1FM = 0x10, /* No more than 1 File Mark at EOD */ 169 SA_QUIRK_NODREAD = 0x20, /* Don't try and dummy read density */ 170 SA_QUIRK_NO_MODESEL = 0x40, /* Don't do mode select at all */ 171 SA_QUIRK_NO_CPAGE = 0x80 /* Don't use DEVICE COMPRESSION page */ 172} sa_quirks; 173 174/* units are bits 4-7, 16-21 (1024 units) */ 175#define SAUNIT(DEV) \ 176 (((minor(DEV) & 0xF0) >> 4) | ((minor(DEV) & 0x3f0000) >> 16)) 177 178#define SAMODE(z) ((minor(z) & 0x3)) 179#define SADENSITY(z) (((minor(z) >> 2) & 0x3)) 180#define SA_IS_CTRL(z) (minor(z) & (1 << 29)) 181 182#define SA_NOT_CTLDEV 0 183#define SA_CTLDEV 1 184 185#define SA_ATYPE_R 0 186#define SA_ATYPE_NR 1 187#define SA_ATYPE_ER 2 188 189#define SAMINOR(ctl, unit, mode, access) \ 190 ((ctl << 29) | ((unit & 0x3f0) << 16) | ((unit & 0xf) << 4) | \ 191 (mode << 0x2) | (access & 0x3)) 192 193#define SA_NUM_MODES 4 194struct sa_devs { 195 dev_t ctl_dev; 196 struct sa_mode_devs { 197 dev_t r_dev; 198 dev_t nr_dev; 199 dev_t er_dev; 200 } mode_devs[SA_NUM_MODES]; 201}; 202 203struct sa_softc { 204 sa_state state; 205 sa_flags flags; 206 sa_quirks quirks; 207 struct bio_queue_head bio_queue; 208 int queue_count; 209 struct devstat device_stats; 210 struct sa_devs devs; 211 int blk_gran; 212 int blk_mask; 213 int blk_shift; 214 u_int32_t max_blk; 215 u_int32_t min_blk; 216 u_int32_t comp_algorithm; 217 u_int32_t saved_comp_algorithm; 218 u_int32_t media_blksize; 219 u_int32_t last_media_blksize; 220 u_int32_t media_numblks; 221 u_int8_t media_density; 222 u_int8_t speed; 223 u_int8_t scsi_rev; 224 u_int8_t dsreg; /* mtio mt_dsreg, redux */ 225 int buffer_mode; 226 int filemarks; 227 union ccb saved_ccb; 228 int last_resid_was_io; 229 230 /* 231 * Relative to BOT Location. 232 */ 233 daddr_t fileno; 234 daddr_t blkno; 235 236 /* 237 * Latched Error Info 238 */ 239 struct { 240 struct scsi_sense_data _last_io_sense; 241 u_int32_t _last_io_resid; 242 u_int8_t _last_io_cdb[CAM_MAX_CDBLEN]; 243 struct scsi_sense_data _last_ctl_sense; 244 u_int32_t _last_ctl_resid; 245 u_int8_t _last_ctl_cdb[CAM_MAX_CDBLEN]; 246#define last_io_sense errinfo._last_io_sense 247#define last_io_resid errinfo._last_io_resid 248#define last_io_cdb errinfo._last_io_cdb 249#define last_ctl_sense errinfo._last_ctl_sense 250#define last_ctl_resid errinfo._last_ctl_resid 251#define last_ctl_cdb errinfo._last_ctl_cdb 252 } errinfo; 253 /* 254 * Misc other flags/state 255 */ 256 u_int32_t 257 : 31, 258 ctrl_mode : 1; /* control device open */ 259}; 260 261struct sa_quirk_entry { 262 struct scsi_inquiry_pattern inq_pat; /* matching pattern */ 263 sa_quirks quirks; /* specific quirk type */ 264 u_int32_t prefblk; /* preferred blocksize when in fixed mode */ 265}; 266 267static struct sa_quirk_entry sa_quirk_table[] = 268{ 269 { 270 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "OnStream", 271 "ADR*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_NODREAD | 272 SA_QUIRK_1FM|SA_QUIRK_NO_MODESEL, 32768 273 }, 274 { 275 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 276 "Python 06408*", "*"}, SA_QUIRK_NODREAD, 0 277 }, 278 { 279 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 280 "Python 25601*", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_NODREAD, 0 281 }, 282 { 283 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 284 "Python*", "*"}, SA_QUIRK_NODREAD, 0 285 }, 286 { 287 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 288 "VIPER 150*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 289 }, 290 { 291 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 292 "VIPER 2525 25462", "-011"}, 293 SA_QUIRK_NOCOMP|SA_QUIRK_1FM|SA_QUIRK_NODREAD, 0 294 }, 295 { 296 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 297 "VIPER 2525*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 1024 298 }, 299#if 0 300 { 301 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 302 "C15*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_NO_CPAGE, 0, 303 }, 304#endif 305 { 306 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 307 "T20*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 308 }, 309 { 310 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 311 "T4000*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 312 }, 313 { 314 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 315 "HP-88780*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 316 }, 317 { 318 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "KENNEDY", 319 "*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 320 }, 321 { 322 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "M4 DATA", 323 "123107 SCSI*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 324 }, 325 { /* jreynold@primenet.com */ 326 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "Seagate", 327 "STT8000N*", "*"}, SA_QUIRK_1FM, 0 328 }, 329 { /* mike@sentex.net */ 330 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "Seagate", 331 "STT20000*", "*"}, SA_QUIRK_1FM, 0 332 }, 333 { 334 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 335 " TDC 3600", "U07:"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 336 }, 337 { 338 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 339 " TDC 3800", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 340 }, 341 { 342 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 343 " TDC 4100", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 344 }, 345 { 346 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 347 " TDC 4200", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 348 }, 349 { 350 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 351 " SLR*", "*"}, SA_QUIRK_1FM, 0 352 }, 353 { 354 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "WANGTEK", 355 "5525ES*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 356 }, 357 { 358 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "WANGTEK", 359 "51000*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 1024 360 } 361}; 362 363static d_open_t saopen; 364static d_close_t saclose; 365static d_strategy_t sastrategy; 366static d_ioctl_t saioctl; 367static periph_init_t sainit; 368static periph_ctor_t saregister; 369static periph_oninv_t saoninvalidate; 370static periph_dtor_t sacleanup; 371static periph_start_t sastart; 372static void saasync(void *callback_arg, u_int32_t code, 373 struct cam_path *path, void *arg); 374static void sadone(struct cam_periph *periph, 375 union ccb *start_ccb); 376static int saerror(union ccb *ccb, u_int32_t cam_flags, 377 u_int32_t sense_flags); 378static int samarkswanted(struct cam_periph *); 379static int sacheckeod(struct cam_periph *periph); 380static int sagetparams(struct cam_periph *periph, 381 sa_params params_to_get, 382 u_int32_t *blocksize, u_int8_t *density, 383 u_int32_t *numblocks, int *buff_mode, 384 u_int8_t *write_protect, u_int8_t *speed, 385 int *comp_supported, int *comp_enabled, 386 u_int32_t *comp_algorithm, 387 sa_comp_t *comp_page); 388static int sasetparams(struct cam_periph *periph, 389 sa_params params_to_set, 390 u_int32_t blocksize, u_int8_t density, 391 u_int32_t comp_algorithm, 392 u_int32_t sense_flags); 393static void saprevent(struct cam_periph *periph, int action); 394static int sarewind(struct cam_periph *periph); 395static int saspace(struct cam_periph *periph, int count, 396 scsi_space_code code); 397static int samount(struct cam_periph *, int, dev_t); 398static int saretension(struct cam_periph *periph); 399static int sareservereleaseunit(struct cam_periph *periph, 400 int reserve); 401static int saloadunload(struct cam_periph *periph, int load); 402static int saerase(struct cam_periph *periph, int longerase); 403static int sawritefilemarks(struct cam_periph *periph, 404 int nmarks, int setmarks); 405static int sardpos(struct cam_periph *periph, int, u_int32_t *); 406static int sasetpos(struct cam_periph *periph, int, u_int32_t *); 407 408 409static struct periph_driver sadriver = 410{ 411 sainit, "sa", 412 TAILQ_HEAD_INITIALIZER(sadriver.units), /* generation */ 0 413}; 414 415PERIPHDRIVER_DECLARE(sa, sadriver); 416 417/* For 2.2-stable support */ 418#ifndef D_TAPE 419#define D_TAPE 0 420#endif 421 422#define SA_CDEV_MAJOR 14 423 424static struct cdevsw sa_cdevsw = { 425 /* open */ saopen, 426 /* close */ saclose, 427 /* read */ physread, 428 /* write */ physwrite, 429 /* ioctl */ saioctl, 430 /* poll */ nopoll, 431 /* mmap */ nommap, 432 /* strategy */ sastrategy, 433 /* name */ "sa", 434 /* maj */ SA_CDEV_MAJOR, 435 /* dump */ nodump, 436 /* psize */ nopsize, 437 /* flags */ D_TAPE, 438}; 439 440static struct extend_array *saperiphs; 441 442static int 443saopen(dev_t dev, int flags, int fmt, struct thread *td) 444{ 445 struct cam_periph *periph; 446 struct sa_softc *softc; 447 int unit; 448 int mode; 449 int density; 450 int error; 451 int s; 452 453 unit = SAUNIT(dev); 454 mode = SAMODE(dev); 455 density = SADENSITY(dev); 456 457 s = splsoftcam(); 458 periph = cam_extend_get(saperiphs, unit); 459 if (periph == NULL) { 460 (void) splx(s); 461 return (ENXIO); 462 } 463 softc = (struct sa_softc *)periph->softc; 464 if ((error = cam_periph_lock(periph, PRIBIO|PCATCH)) != 0) { 465 splx(s); 466 return (error); 467 } 468 splx(s); 469 470 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE|CAM_DEBUG_INFO, 471 ("saopen(%d): dev=0x%x softc=0x%x\n", unit, unit, softc->flags)); 472 473 if (cam_periph_acquire(periph) != CAM_REQ_CMP) { 474 cam_periph_unlock(periph); 475 return (ENXIO); 476 } 477 if (SA_IS_CTRL(dev)) { 478 softc->ctrl_mode = 1; 479 cam_periph_unlock(periph); 480 return (0); 481 } 482 483 484 if (softc->flags & SA_FLAG_OPEN) { 485 error = EBUSY; 486 } else if (softc->flags & SA_FLAG_INVALID) { 487 error = ENXIO; 488 } else { 489 /* 490 * The function samount ensures media is loaded and ready. 491 * It also does a device RESERVE if the tape isn't yet mounted. 492 */ 493 error = samount(periph, flags, dev); 494 } 495 496 if (error) { 497 cam_periph_release(periph); 498 } else { 499 saprevent(periph, PR_PREVENT); 500 softc->flags |= SA_FLAG_OPEN; 501 } 502 cam_periph_unlock(periph); 503 return (error); 504} 505 506static int 507saclose(dev_t dev, int flag, int fmt, struct thread *td) 508{ 509 struct cam_periph *periph; 510 struct sa_softc *softc; 511 int unit, mode, error, writing, tmp; 512 int closedbits = SA_FLAG_OPEN; 513 514 unit = SAUNIT(dev); 515 mode = SAMODE(dev); 516 periph = cam_extend_get(saperiphs, unit); 517 if (periph == NULL) 518 return (ENXIO); 519 520 softc = (struct sa_softc *)periph->softc; 521 522 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE|CAM_DEBUG_INFO, 523 ("saclose(%d): dev=0x%x softc=0x%x\n", unit, unit, softc->flags)); 524 525 526 if ((error = cam_periph_lock(periph, PRIBIO)) != 0) { 527 return (error); 528 } 529 530 if (SA_IS_CTRL(dev)) { 531 softc->ctrl_mode = 0; 532 cam_periph_release(periph); 533 cam_periph_unlock(periph); 534 return (0); 535 } 536 537 /* 538 * Were we writing the tape? 539 */ 540 writing = (softc->flags & SA_FLAG_TAPE_WRITTEN) != 0; 541 542 /* 543 * See whether or not we need to write filemarks. If this 544 * fails, we probably have to assume we've lost tape 545 * position. 546 */ 547 error = sacheckeod(periph); 548 if (error) { 549 xpt_print_path(periph->path); 550 printf("failed to write terminating filemark(s)\n"); 551 softc->flags |= SA_FLAG_TAPE_FROZEN; 552 } 553 554 /* 555 * Whatever we end up doing, allow users to eject tapes from here on. 556 */ 557 saprevent(periph, PR_ALLOW); 558 559 /* 560 * Decide how to end... 561 */ 562 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) { 563 closedbits |= SA_FLAG_TAPE_FROZEN; 564 } else switch (mode) { 565 case SA_MODE_OFFLINE: 566 /* 567 * An 'offline' close is an unconditional release of 568 * frozen && mount conditions, irrespective of whether 569 * these operations succeeded. The reason for this is 570 * to allow at least some kind of programmatic way 571 * around our state getting all fouled up. If somebody 572 * issues an 'offline' command, that will be allowed 573 * to clear state. 574 */ 575 (void) sarewind(periph); 576 (void) saloadunload(periph, FALSE); 577 closedbits |= SA_FLAG_TAPE_MOUNTED|SA_FLAG_TAPE_FROZEN; 578 break; 579 case SA_MODE_REWIND: 580 /* 581 * If the rewind fails, return an error- if anyone cares, 582 * but not overwriting any previous error. 583 * 584 * We don't clear the notion of mounted here, but we do 585 * clear the notion of frozen if we successfully rewound. 586 */ 587 tmp = sarewind(periph); 588 if (tmp) { 589 if (error != 0) 590 error = tmp; 591 } else { 592 closedbits |= SA_FLAG_TAPE_FROZEN; 593 } 594 break; 595 case SA_MODE_NOREWIND: 596 /* 597 * If we're not rewinding/unloading the tape, find out 598 * whether we need to back up over one of two filemarks 599 * we wrote (if we wrote two filemarks) so that appends 600 * from this point on will be sane. 601 */ 602 if (error == 0 && writing && (softc->quirks & SA_QUIRK_2FM)) { 603 tmp = saspace(periph, -1, SS_FILEMARKS); 604 if (tmp) { 605 xpt_print_path(periph->path); 606 printf("unable to backspace over one of double" 607 " filemarks at end of tape\n"); 608 xpt_print_path(periph->path); 609 printf("it is possible that this device" 610 " needs a SA_QUIRK_1FM quirk set for it\n"); 611 softc->flags |= SA_FLAG_TAPE_FROZEN; 612 } 613 } 614 break; 615 default: 616 xpt_print_path(periph->path); 617 panic("unknown mode 0x%x in saclose\n", mode); 618 /* NOTREACHED */ 619 break; 620 } 621 622 /* 623 * We wish to note here that there are no more filemarks to be written. 624 */ 625 softc->filemarks = 0; 626 softc->flags &= ~SA_FLAG_TAPE_WRITTEN; 627 628 /* 629 * And we are no longer open for business. 630 */ 631 softc->flags &= ~closedbits; 632 633 /* 634 * Inform users if tape state if frozen.... 635 */ 636 if (softc->flags & SA_FLAG_TAPE_FROZEN) { 637 xpt_print_path(periph->path); 638 printf("tape is now frozen- use an OFFLINE, REWIND or MTEOM " 639 "command to clear this state.\n"); 640 } 641 642 /* release the device if it is no longer mounted */ 643 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) 644 sareservereleaseunit(periph, FALSE); 645 646 cam_periph_unlock(periph); 647 cam_periph_release(periph); 648 649 return (error); 650} 651 652/* 653 * Actually translate the requested transfer into one the physical driver 654 * can understand. The transfer is described by a buf and will include 655 * only one physical transfer. 656 */ 657static void 658sastrategy(struct bio *bp) 659{ 660 struct cam_periph *periph; 661 struct sa_softc *softc; 662 u_int unit; 663 int s; 664 665 bp->bio_resid = bp->bio_bcount; 666 if (SA_IS_CTRL(bp->bio_dev)) { 667 biofinish(bp, NULL, EINVAL); 668 return; 669 } 670 unit = SAUNIT(bp->bio_dev); 671 periph = cam_extend_get(saperiphs, unit); 672 if (periph == NULL) { 673 biofinish(bp, NULL, ENXIO); 674 return; 675 } 676 softc = (struct sa_softc *)periph->softc; 677 678 s = splsoftcam(); 679 680 if (softc->flags & SA_FLAG_INVALID) { 681 splx(s); 682 biofinish(bp, NULL, ENXIO); 683 return; 684 } 685 686 if (softc->flags & SA_FLAG_TAPE_FROZEN) { 687 splx(s); 688 biofinish(bp, NULL, EPERM); 689 return; 690 } 691 692 splx(s); 693 694 /* 695 * If it's a null transfer, return immediatly 696 */ 697 if (bp->bio_bcount == 0) { 698 biodone(bp); 699 return; 700 } 701 702 /* valid request? */ 703 if (softc->flags & SA_FLAG_FIXED) { 704 /* 705 * Fixed block device. The byte count must 706 * be a multiple of our block size. 707 */ 708 if (((softc->blk_mask != ~0) && 709 ((bp->bio_bcount & softc->blk_mask) != 0)) || 710 ((softc->blk_mask == ~0) && 711 ((bp->bio_bcount % softc->min_blk) != 0))) { 712 xpt_print_path(periph->path); 713 printf("Invalid request. Fixed block device " 714 "requests must be a multiple " 715 "of %d bytes\n", softc->min_blk); 716 biofinish(bp, NULL, EINVAL); 717 return; 718 } 719 } else if ((bp->bio_bcount > softc->max_blk) || 720 (bp->bio_bcount < softc->min_blk) || 721 (bp->bio_bcount & softc->blk_mask) != 0) { 722 723 xpt_print_path(periph->path); 724 printf("Invalid request. Variable block device " 725 "requests must be "); 726 if (softc->blk_mask != 0) { 727 printf("a multiple of %d ", (0x1 << softc->blk_gran)); 728 } 729 printf("between %d and %d bytes\n", softc->min_blk, 730 softc->max_blk); 731 biofinish(bp, NULL, EINVAL); 732 return; 733 } 734 735 /* 736 * Mask interrupts so that the device cannot be invalidated until 737 * after we are in the queue. Otherwise, we might not properly 738 * clean up one of the buffers. 739 */ 740 s = splbio(); 741 742 /* 743 * Place it at the end of the queue. 744 */ 745 bioq_insert_tail(&softc->bio_queue, bp); 746 747 softc->queue_count++; 748 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("sastrategy: enqueuing a %d " 749 "%s byte %s queue count now %d\n", (int) bp->bio_bcount, 750 (softc->flags & SA_FLAG_FIXED)? "fixed" : "variable", 751 (bp->bio_cmd == BIO_READ)? "read" : "write", softc->queue_count)); 752 753 splx(s); 754 755 /* 756 * Schedule ourselves for performing the work. 757 */ 758 xpt_schedule(periph, 1); 759 760 return; 761} 762 763static int 764saioctl(dev_t dev, u_long cmd, caddr_t arg, int flag, struct thread *td) 765{ 766 struct cam_periph *periph; 767 struct sa_softc *softc; 768 scsi_space_code spaceop; 769 int didlockperiph = 0; 770 int s; 771 int unit; 772 int mode; 773 int density; 774 int error = 0; 775 776 unit = SAUNIT(dev); 777 mode = SAMODE(dev); 778 density = SADENSITY(dev); 779 error = 0; /* shut up gcc */ 780 spaceop = 0; /* shut up gcc */ 781 782 periph = cam_extend_get(saperiphs, unit); 783 if (periph == NULL) 784 return (ENXIO); 785 786 softc = (struct sa_softc *)periph->softc; 787 788 /* 789 * Check for control mode accesses. We allow MTIOCGET and 790 * MTIOCERRSTAT (but need to be the only one open in order 791 * to clear latched status), and MTSETBSIZE, MTSETDNSTY 792 * and MTCOMP (but need to be the only one accessing this 793 * device to run those). 794 */ 795 796 if (SA_IS_CTRL(dev)) { 797 switch (cmd) { 798 case MTIOCGETEOTMODEL: 799 case MTIOCGET: 800 break; 801 case MTIOCERRSTAT: 802 /* 803 * If the periph isn't already locked, lock it 804 * so our MTIOCERRSTAT can reset latched error stats. 805 * 806 * If the periph is already locked, skip it because 807 * we're just getting status and it'll be up to the 808 * other thread that has this device open to do 809 * an MTIOCERRSTAT that would clear latched status. 810 */ 811 s = splsoftcam(); 812 if ((periph->flags & CAM_PERIPH_LOCKED) == 0) { 813 error = cam_periph_lock(periph, PRIBIO|PCATCH); 814 if (error != 0) { 815 splx(s); 816 return (error); 817 } 818 didlockperiph = 1; 819 } 820 break; 821 822 case MTIOCSETEOTMODEL: 823 case MTSETBSIZ: 824 case MTSETDNSTY: 825 case MTCOMP: 826 /* 827 * We need to acquire the peripheral here rather 828 * than at open time because we are sharing writable 829 * access to data structures. 830 */ 831 s = splsoftcam(); 832 error = cam_periph_lock(periph, PRIBIO|PCATCH); 833 if (error != 0) { 834 splx(s); 835 return (error); 836 } 837 didlockperiph = 1; 838 break; 839 840 default: 841 return (EINVAL); 842 } 843 } 844 845 /* 846 * Find the device that the user is talking about 847 */ 848 switch (cmd) { 849 case MTIOCGET: 850 { 851 struct mtget *g = (struct mtget *)arg; 852 853 /* 854 * If this isn't the control mode device, actually go out 855 * and ask the drive again what it's set to. 856 */ 857 if (!SA_IS_CTRL(dev)) { 858 u_int8_t write_protect; 859 int comp_enabled, comp_supported; 860 error = sagetparams(periph, SA_PARAM_ALL, 861 &softc->media_blksize, &softc->media_density, 862 &softc->media_numblks, &softc->buffer_mode, 863 &write_protect, &softc->speed, &comp_supported, 864 &comp_enabled, &softc->comp_algorithm, NULL); 865 if (error) 866 break; 867 if (write_protect) 868 softc->flags |= SA_FLAG_TAPE_WP; 869 else 870 softc->flags &= ~SA_FLAG_TAPE_WP; 871 softc->flags &= ~(SA_FLAG_COMP_SUPP| 872 SA_FLAG_COMP_ENABLED|SA_FLAG_COMP_UNSUPP); 873 if (comp_supported) { 874 if (softc->saved_comp_algorithm == 0) 875 softc->saved_comp_algorithm = 876 softc->comp_algorithm; 877 softc->flags |= SA_FLAG_COMP_SUPP; 878 if (comp_enabled) 879 softc->flags |= SA_FLAG_COMP_ENABLED; 880 } else 881 softc->flags |= SA_FLAG_COMP_UNSUPP; 882 } 883 bzero(g, sizeof(struct mtget)); 884 g->mt_type = MT_ISAR; 885 if (softc->flags & SA_FLAG_COMP_UNSUPP) { 886 g->mt_comp = MT_COMP_UNSUPP; 887 g->mt_comp0 = MT_COMP_UNSUPP; 888 g->mt_comp1 = MT_COMP_UNSUPP; 889 g->mt_comp2 = MT_COMP_UNSUPP; 890 g->mt_comp3 = MT_COMP_UNSUPP; 891 } else { 892 if ((softc->flags & SA_FLAG_COMP_ENABLED) == 0) { 893 g->mt_comp = MT_COMP_DISABLED; 894 } else { 895 g->mt_comp = softc->comp_algorithm; 896 } 897 g->mt_comp0 = softc->comp_algorithm; 898 g->mt_comp1 = softc->comp_algorithm; 899 g->mt_comp2 = softc->comp_algorithm; 900 g->mt_comp3 = softc->comp_algorithm; 901 } 902 g->mt_density = softc->media_density; 903 g->mt_density0 = softc->media_density; 904 g->mt_density1 = softc->media_density; 905 g->mt_density2 = softc->media_density; 906 g->mt_density3 = softc->media_density; 907 g->mt_blksiz = softc->media_blksize; 908 g->mt_blksiz0 = softc->media_blksize; 909 g->mt_blksiz1 = softc->media_blksize; 910 g->mt_blksiz2 = softc->media_blksize; 911 g->mt_blksiz3 = softc->media_blksize; 912 g->mt_fileno = softc->fileno; 913 g->mt_blkno = softc->blkno; 914 g->mt_dsreg = (short) softc->dsreg; 915 /* 916 * Yes, we know that this is likely to overflow 917 */ 918 if (softc->last_resid_was_io) { 919 if ((g->mt_resid = (short) softc->last_io_resid) != 0) { 920 if (SA_IS_CTRL(dev) == 0 || didlockperiph) { 921 softc->last_io_resid = 0; 922 } 923 } 924 } else { 925 if ((g->mt_resid = (short)softc->last_ctl_resid) != 0) { 926 if (SA_IS_CTRL(dev) == 0 || didlockperiph) { 927 softc->last_ctl_resid = 0; 928 } 929 } 930 } 931 error = 0; 932 break; 933 } 934 case MTIOCERRSTAT: 935 { 936 struct scsi_tape_errors *sep = 937 &((union mterrstat *)arg)->scsi_errstat; 938 939 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, 940 ("saioctl: MTIOCERRSTAT\n")); 941 942 bzero(sep, sizeof(*sep)); 943 sep->io_resid = softc->last_io_resid; 944 bcopy((caddr_t) &softc->last_io_sense, sep->io_sense, 945 sizeof (sep->io_sense)); 946 bcopy((caddr_t) &softc->last_io_cdb, sep->io_cdb, 947 sizeof (sep->io_cdb)); 948 sep->ctl_resid = softc->last_ctl_resid; 949 bcopy((caddr_t) &softc->last_ctl_sense, sep->ctl_sense, 950 sizeof (sep->ctl_sense)); 951 bcopy((caddr_t) &softc->last_ctl_cdb, sep->ctl_cdb, 952 sizeof (sep->ctl_cdb)); 953 954 if (SA_IS_CTRL(dev) == 0 || didlockperiph) 955 bzero((caddr_t) &softc->errinfo, 956 sizeof (softc->errinfo)); 957 error = 0; 958 break; 959 } 960 case MTIOCTOP: 961 { 962 struct mtop *mt; 963 int count; 964 965 mt = (struct mtop *)arg; 966 967 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, 968 ("saioctl: op=0x%x count=0x%x\n", 969 mt->mt_op, mt->mt_count)); 970 971 count = mt->mt_count; 972 switch (mt->mt_op) { 973 case MTWEOF: /* write an end-of-file marker */ 974 /* 975 * We don't need to clear the SA_FLAG_TAPE_WRITTEN 976 * flag because by keeping track of filemarks 977 * we have last written we know ehether or not 978 * we need to write more when we close the device. 979 */ 980 error = sawritefilemarks(periph, count, FALSE); 981 break; 982 case MTWSS: /* write a setmark */ 983 error = sawritefilemarks(periph, count, TRUE); 984 break; 985 case MTBSR: /* backward space record */ 986 case MTFSR: /* forward space record */ 987 case MTBSF: /* backward space file */ 988 case MTFSF: /* forward space file */ 989 case MTBSS: /* backward space setmark */ 990 case MTFSS: /* forward space setmark */ 991 case MTEOD: /* space to end of recorded medium */ 992 { 993 int nmarks; 994 995 spaceop = SS_FILEMARKS; 996 nmarks = softc->filemarks; 997 error = sacheckeod(periph); 998 if (error) { 999 xpt_print_path(periph->path); 1000 printf("EOD check prior to spacing failed\n"); 1001 softc->flags |= SA_FLAG_EIO_PENDING; 1002 break; 1003 } 1004 nmarks -= softc->filemarks; 1005 switch(mt->mt_op) { 1006 case MTBSR: 1007 count = -count; 1008 /* FALLTHROUGH */ 1009 case MTFSR: 1010 spaceop = SS_BLOCKS; 1011 break; 1012 case MTBSF: 1013 count = -count; 1014 /* FALLTHROUGH */ 1015 case MTFSF: 1016 break; 1017 case MTBSS: 1018 count = -count; 1019 /* FALLTHROUGH */ 1020 case MTFSS: 1021 spaceop = SS_SETMARKS; 1022 break; 1023 case MTEOD: 1024 spaceop = SS_EOD; 1025 count = 0; 1026 nmarks = 0; 1027 break; 1028 default: 1029 error = EINVAL; 1030 break; 1031 } 1032 if (error) 1033 break; 1034 1035 nmarks = softc->filemarks; 1036 /* 1037 * XXX: Why are we checking again? 1038 */ 1039 error = sacheckeod(periph); 1040 if (error) 1041 break; 1042 nmarks -= softc->filemarks; 1043 error = saspace(periph, count - nmarks, spaceop); 1044 /* 1045 * At this point, clear that we've written the tape 1046 * and that we've written any filemarks. We really 1047 * don't know what the applications wishes to do next- 1048 * the sacheckeod's will make sure we terminated the 1049 * tape correctly if we'd been writing, but the next 1050 * action the user application takes will set again 1051 * whether we need to write filemarks. 1052 */ 1053 softc->flags &= 1054 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1055 softc->filemarks = 0; 1056 break; 1057 } 1058 case MTREW: /* rewind */ 1059 (void) sacheckeod(periph); 1060 error = sarewind(periph); 1061 /* see above */ 1062 softc->flags &= 1063 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1064 softc->flags &= ~SA_FLAG_ERR_PENDING; 1065 softc->filemarks = 0; 1066 break; 1067 case MTERASE: /* erase */ 1068 error = saerase(periph, count); 1069 softc->flags &= 1070 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1071 softc->flags &= ~SA_FLAG_ERR_PENDING; 1072 break; 1073 case MTRETENS: /* re-tension tape */ 1074 error = saretension(periph); 1075 softc->flags &= 1076 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1077 softc->flags &= ~SA_FLAG_ERR_PENDING; 1078 break; 1079 case MTOFFL: /* rewind and put the drive offline */ 1080 1081 (void) sacheckeod(periph); 1082 /* see above */ 1083 softc->flags &= ~SA_FLAG_TAPE_WRITTEN; 1084 softc->filemarks = 0; 1085 1086 error = sarewind(periph); 1087 /* clear the frozen flag anyway */ 1088 softc->flags &= ~SA_FLAG_TAPE_FROZEN; 1089 1090 /* 1091 * Be sure to allow media removal before ejecting. 1092 */ 1093 1094 saprevent(periph, PR_ALLOW); 1095 if (error == 0) { 1096 error = saloadunload(periph, FALSE); 1097 if (error == 0) { 1098 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 1099 } 1100 } 1101 break; 1102 1103 case MTNOP: /* no operation, sets status only */ 1104 case MTCACHE: /* enable controller cache */ 1105 case MTNOCACHE: /* disable controller cache */ 1106 error = 0; 1107 break; 1108 1109 case MTSETBSIZ: /* Set block size for device */ 1110 1111 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, count, 1112 0, 0, 0); 1113 if (error == 0) { 1114 softc->last_media_blksize = 1115 softc->media_blksize; 1116 softc->media_blksize = count; 1117 if (count) { 1118 softc->flags |= SA_FLAG_FIXED; 1119 if (powerof2(count)) { 1120 softc->blk_shift = 1121 ffs(count) - 1; 1122 softc->blk_mask = count - 1; 1123 } else { 1124 softc->blk_mask = ~0; 1125 softc->blk_shift = 0; 1126 } 1127 /* 1128 * Make the user's desire 'persistent'. 1129 */ 1130 softc->quirks &= ~SA_QUIRK_VARIABLE; 1131 softc->quirks |= SA_QUIRK_FIXED; 1132 } else { 1133 softc->flags &= ~SA_FLAG_FIXED; 1134 if (softc->max_blk == 0) { 1135 softc->max_blk = ~0; 1136 } 1137 softc->blk_shift = 0; 1138 if (softc->blk_gran != 0) { 1139 softc->blk_mask = 1140 softc->blk_gran - 1; 1141 } else { 1142 softc->blk_mask = 0; 1143 } 1144 /* 1145 * Make the user's desire 'persistent'. 1146 */ 1147 softc->quirks |= SA_QUIRK_VARIABLE; 1148 softc->quirks &= ~SA_QUIRK_FIXED; 1149 } 1150 } 1151 break; 1152 case MTSETDNSTY: /* Set density for device and mode */ 1153 if (count > UCHAR_MAX) { 1154 error = EINVAL; 1155 break; 1156 } else { 1157 error = sasetparams(periph, SA_PARAM_DENSITY, 1158 0, count, 0, 0); 1159 } 1160 break; 1161 case MTCOMP: /* enable compression */ 1162 /* 1163 * Some devices don't support compression, and 1164 * don't like it if you ask them for the 1165 * compression page. 1166 */ 1167 if ((softc->quirks & SA_QUIRK_NOCOMP) || 1168 (softc->flags & SA_FLAG_COMP_UNSUPP)) { 1169 error = ENODEV; 1170 break; 1171 } 1172 error = sasetparams(periph, SA_PARAM_COMPRESSION, 1173 0, 0, count, SF_NO_PRINT); 1174 break; 1175 default: 1176 error = EINVAL; 1177 } 1178 break; 1179 } 1180 case MTIOCIEOT: 1181 case MTIOCEEOT: 1182 error = 0; 1183 break; 1184 case MTIOCRDSPOS: 1185 error = sardpos(periph, 0, (u_int32_t *) arg); 1186 break; 1187 case MTIOCRDHPOS: 1188 error = sardpos(periph, 1, (u_int32_t *) arg); 1189 break; 1190 case MTIOCSLOCATE: 1191 error = sasetpos(periph, 0, (u_int32_t *) arg); 1192 break; 1193 case MTIOCHLOCATE: 1194 error = sasetpos(periph, 1, (u_int32_t *) arg); 1195 break; 1196 case MTIOCGETEOTMODEL: 1197 error = 0; 1198 if (softc->quirks & SA_QUIRK_1FM) 1199 mode = 1; 1200 else 1201 mode = 2; 1202 *((u_int32_t *) arg) = mode; 1203 break; 1204 case MTIOCSETEOTMODEL: 1205 error = 0; 1206 switch (*((u_int32_t *) arg)) { 1207 case 1: 1208 softc->quirks &= ~SA_QUIRK_2FM; 1209 softc->quirks |= SA_QUIRK_1FM; 1210 break; 1211 case 2: 1212 softc->quirks &= ~SA_QUIRK_1FM; 1213 softc->quirks |= SA_QUIRK_2FM; 1214 break; 1215 default: 1216 error = EINVAL; 1217 break; 1218 } 1219 break; 1220 default: 1221 error = cam_periph_ioctl(periph, cmd, arg, saerror); 1222 break; 1223 } 1224 1225 /* 1226 * Check to see if we cleared a frozen state 1227 */ 1228 if (error == 0 && (softc->flags & SA_FLAG_TAPE_FROZEN)) { 1229 switch(cmd) { 1230 case MTIOCRDSPOS: 1231 case MTIOCRDHPOS: 1232 case MTIOCSLOCATE: 1233 case MTIOCHLOCATE: 1234 softc->fileno = (daddr_t) -1; 1235 softc->blkno = (daddr_t) -1; 1236 softc->flags &= ~SA_FLAG_TAPE_FROZEN; 1237 xpt_print_path(periph->path); 1238 printf("tape state now unfrozen.\n"); 1239 break; 1240 default: 1241 break; 1242 } 1243 } 1244 if (didlockperiph) { 1245 cam_periph_unlock(periph); 1246 } 1247 return (error); 1248} 1249 1250static void 1251sainit(void) 1252{ 1253 cam_status status; 1254 struct cam_path *path; 1255 1256 /* 1257 * Create our extend array for storing the devices we attach to. 1258 */ 1259 saperiphs = cam_extend_new(); 1260 if (saperiphs == NULL) { 1261 printf("sa: Failed to alloc extend array!\n"); 1262 return; 1263 } 1264 1265 /* 1266 * Install a global async callback. 1267 */ 1268 status = xpt_create_path(&path, NULL, CAM_XPT_PATH_ID, 1269 CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD); 1270 1271 if (status == CAM_REQ_CMP) { 1272 /* Register the async callbacks of interrest */ 1273 struct ccb_setasync csa; /* 1274 * This is an immediate CCB, 1275 * so using the stack is OK 1276 */ 1277 xpt_setup_ccb(&csa.ccb_h, path, 5); 1278 csa.ccb_h.func_code = XPT_SASYNC_CB; 1279 csa.event_enable = AC_FOUND_DEVICE; 1280 csa.callback = saasync; 1281 csa.callback_arg = NULL; 1282 xpt_action((union ccb *)&csa); 1283 status = csa.ccb_h.status; 1284 xpt_free_path(path); 1285 } 1286 1287 if (status != CAM_REQ_CMP) { 1288 printf("sa: Failed to attach master async callback " 1289 "due to status 0x%x!\n", status); 1290 } 1291} 1292 1293static void 1294saoninvalidate(struct cam_periph *periph) 1295{ 1296 struct sa_softc *softc; 1297 struct bio *q_bp; 1298 struct ccb_setasync csa; 1299 int s; 1300 1301 softc = (struct sa_softc *)periph->softc; 1302 1303 /* 1304 * De-register any async callbacks. 1305 */ 1306 xpt_setup_ccb(&csa.ccb_h, periph->path, 1307 /* priority */ 5); 1308 csa.ccb_h.func_code = XPT_SASYNC_CB; 1309 csa.event_enable = 0; 1310 csa.callback = saasync; 1311 csa.callback_arg = periph; 1312 xpt_action((union ccb *)&csa); 1313 1314 softc->flags |= SA_FLAG_INVALID; 1315 1316 /* 1317 * Although the oninvalidate() routines are always called at 1318 * splsoftcam, we need to be at splbio() here to keep the buffer 1319 * queue from being modified while we traverse it. 1320 */ 1321 s = splbio(); 1322 1323 /* 1324 * Return all queued I/O with ENXIO. 1325 * XXX Handle any transactions queued to the card 1326 * with XPT_ABORT_CCB. 1327 */ 1328 while ((q_bp = bioq_first(&softc->bio_queue)) != NULL){ 1329 bioq_remove(&softc->bio_queue, q_bp); 1330 q_bp->bio_resid = q_bp->bio_bcount; 1331 biofinish(q_bp, NULL, ENXIO); 1332 } 1333 softc->queue_count = 0; 1334 splx(s); 1335 1336 xpt_print_path(periph->path); 1337 printf("lost device\n"); 1338 1339} 1340 1341static void 1342sacleanup(struct cam_periph *periph) 1343{ 1344 struct sa_softc *softc; 1345 int i; 1346 1347 softc = (struct sa_softc *)periph->softc; 1348 1349 devstat_remove_entry(&softc->device_stats); 1350 1351 destroy_dev(softc->devs.ctl_dev); 1352 1353 for (i = 0; i < SA_NUM_MODES; i++) { 1354 destroy_dev(softc->devs.mode_devs[i].r_dev); 1355 destroy_dev(softc->devs.mode_devs[i].nr_dev); 1356 destroy_dev(softc->devs.mode_devs[i].er_dev); 1357 } 1358 1359 cam_extend_release(saperiphs, periph->unit_number); 1360 xpt_print_path(periph->path); 1361 printf("removing device entry\n"); 1362 free(softc, M_DEVBUF); 1363} 1364 1365static void 1366saasync(void *callback_arg, u_int32_t code, 1367 struct cam_path *path, void *arg) 1368{ 1369 struct cam_periph *periph; 1370 1371 periph = (struct cam_periph *)callback_arg; 1372 switch (code) { 1373 case AC_FOUND_DEVICE: 1374 { 1375 struct ccb_getdev *cgd; 1376 cam_status status; 1377 1378 cgd = (struct ccb_getdev *)arg; 1379 if (cgd == NULL) 1380 break; 1381 1382 if (SID_TYPE(&cgd->inq_data) != T_SEQUENTIAL) 1383 break; 1384 1385 /* 1386 * Allocate a peripheral instance for 1387 * this device and start the probe 1388 * process. 1389 */ 1390 status = cam_periph_alloc(saregister, saoninvalidate, 1391 sacleanup, sastart, 1392 "sa", CAM_PERIPH_BIO, cgd->ccb_h.path, 1393 saasync, AC_FOUND_DEVICE, cgd); 1394 1395 if (status != CAM_REQ_CMP 1396 && status != CAM_REQ_INPROG) 1397 printf("saasync: Unable to probe new device " 1398 "due to status 0x%x\n", status); 1399 break; 1400 } 1401 default: 1402 cam_periph_async(periph, code, path, arg); 1403 break; 1404 } 1405} 1406 1407static cam_status 1408saregister(struct cam_periph *periph, void *arg) 1409{ 1410 struct sa_softc *softc; 1411 struct ccb_setasync csa; 1412 struct ccb_getdev *cgd; 1413 caddr_t match; 1414 int i; 1415 1416 cgd = (struct ccb_getdev *)arg; 1417 if (periph == NULL) { 1418 printf("saregister: periph was NULL!!\n"); 1419 return (CAM_REQ_CMP_ERR); 1420 } 1421 1422 if (cgd == NULL) { 1423 printf("saregister: no getdev CCB, can't register device\n"); 1424 return (CAM_REQ_CMP_ERR); 1425 } 1426 1427 softc = (struct sa_softc *) 1428 malloc(sizeof (*softc), M_DEVBUF, M_NOWAIT | M_ZERO); 1429 if (softc == NULL) { 1430 printf("saregister: Unable to probe new device. " 1431 "Unable to allocate softc\n"); 1432 return (CAM_REQ_CMP_ERR); 1433 } 1434 softc->scsi_rev = SID_ANSI_REV(&cgd->inq_data); 1435 softc->state = SA_STATE_NORMAL; 1436 softc->fileno = (daddr_t) -1; 1437 softc->blkno = (daddr_t) -1; 1438 1439 bioq_init(&softc->bio_queue); 1440 periph->softc = softc; 1441 cam_extend_set(saperiphs, periph->unit_number, periph); 1442 1443 /* 1444 * See if this device has any quirks. 1445 */ 1446 match = cam_quirkmatch((caddr_t)&cgd->inq_data, 1447 (caddr_t)sa_quirk_table, 1448 sizeof(sa_quirk_table)/sizeof(*sa_quirk_table), 1449 sizeof(*sa_quirk_table), scsi_inquiry_match); 1450 1451 if (match != NULL) { 1452 softc->quirks = ((struct sa_quirk_entry *)match)->quirks; 1453 softc->last_media_blksize = 1454 ((struct sa_quirk_entry *)match)->prefblk; 1455#ifdef CAMDEBUG 1456 xpt_print_path(periph->path); 1457 printf("found quirk entry %d\n", (int) 1458 (((struct sa_quirk_entry *) match) - sa_quirk_table)); 1459#endif 1460 } else 1461 softc->quirks = SA_QUIRK_NONE; 1462 1463 /* 1464 * The SA driver supports a blocksize, but we don't know the 1465 * blocksize until we media is inserted. So, set a flag to 1466 * indicate that the blocksize is unavailable right now. 1467 */ 1468 devstat_add_entry(&softc->device_stats, "sa", periph->unit_number, 0, 1469 DEVSTAT_BS_UNAVAILABLE, SID_TYPE(&cgd->inq_data) | 1470 DEVSTAT_TYPE_IF_SCSI, DEVSTAT_PRIORITY_TAPE); 1471 1472 softc->devs.ctl_dev = make_dev(&sa_cdevsw, SAMINOR(SA_CTLDEV, 1473 periph->unit_number, 0, SA_ATYPE_R), UID_ROOT, GID_OPERATOR, 1474 0660, "%s%d.ctl", periph->periph_name, periph->unit_number); 1475 1476 for (i = 0; i < SA_NUM_MODES; i++) { 1477 1478 softc->devs.mode_devs[i].r_dev = make_dev(&sa_cdevsw, 1479 SAMINOR(SA_NOT_CTLDEV, periph->unit_number, i, SA_ATYPE_R), 1480 UID_ROOT, GID_OPERATOR, 0660, "%s%d.%d", 1481 periph->periph_name, periph->unit_number, i); 1482 1483 softc->devs.mode_devs[i].nr_dev = make_dev(&sa_cdevsw, 1484 SAMINOR(SA_NOT_CTLDEV, periph->unit_number, i, SA_ATYPE_NR), 1485 UID_ROOT, GID_OPERATOR, 0660, "n%s%d.%d", 1486 periph->periph_name, periph->unit_number, i); 1487 1488 1489 softc->devs.mode_devs[i].er_dev = make_dev(&sa_cdevsw, 1490 SAMINOR(SA_NOT_CTLDEV, periph->unit_number, i, SA_ATYPE_ER), 1491 UID_ROOT, GID_OPERATOR, 0660, "e%s%d.%d", 1492 periph->periph_name, periph->unit_number, i); 1493 1494 /* 1495 * Make the (well known) aliases for the first mode. 1496 */ 1497 if (i == 0) { 1498 make_dev_alias(softc->devs.mode_devs[i].r_dev, 1499 "%s%d", periph->periph_name, periph->unit_number); 1500 make_dev_alias(softc->devs.mode_devs[i].nr_dev, 1501 "n%s%d", periph->periph_name, periph->unit_number); 1502 make_dev_alias(softc->devs.mode_devs[i].er_dev, 1503 "e%s%d", periph->periph_name, periph->unit_number); 1504 } 1505 } 1506 1507 /* 1508 * Add an async callback so that we get 1509 * notified if this device goes away. 1510 */ 1511 xpt_setup_ccb(&csa.ccb_h, periph->path, /* priority */ 5); 1512 csa.ccb_h.func_code = XPT_SASYNC_CB; 1513 csa.event_enable = AC_LOST_DEVICE; 1514 csa.callback = saasync; 1515 csa.callback_arg = periph; 1516 xpt_action((union ccb *)&csa); 1517 1518 xpt_announce_periph(periph, NULL); 1519 1520 return (CAM_REQ_CMP); 1521} 1522 1523static void 1524sastart(struct cam_periph *periph, union ccb *start_ccb) 1525{ 1526 struct sa_softc *softc; 1527 1528 softc = (struct sa_softc *)periph->softc; 1529 1530 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("sastart")); 1531 1532 1533 switch (softc->state) { 1534 case SA_STATE_NORMAL: 1535 { 1536 /* Pull a buffer from the queue and get going on it */ 1537 struct bio *bp; 1538 int s; 1539 1540 /* 1541 * See if there is a buf with work for us to do.. 1542 */ 1543 s = splbio(); 1544 bp = bioq_first(&softc->bio_queue); 1545 if (periph->immediate_priority <= periph->pinfo.priority) { 1546 CAM_DEBUG_PRINT(CAM_DEBUG_SUBTRACE, 1547 ("queuing for immediate ccb\n")); 1548 Set_CCB_Type(start_ccb, SA_CCB_WAITING); 1549 SLIST_INSERT_HEAD(&periph->ccb_list, &start_ccb->ccb_h, 1550 periph_links.sle); 1551 periph->immediate_priority = CAM_PRIORITY_NONE; 1552 splx(s); 1553 wakeup(&periph->ccb_list); 1554 } else if (bp == NULL) { 1555 splx(s); 1556 xpt_release_ccb(start_ccb); 1557 } else if ((softc->flags & SA_FLAG_ERR_PENDING) != 0) { 1558 struct bio *done_bp; 1559again: 1560 softc->queue_count--; 1561 bioq_remove(&softc->bio_queue, bp); 1562 bp->bio_resid = bp->bio_bcount; 1563 done_bp = bp; 1564 if ((softc->flags & SA_FLAG_EOM_PENDING) != 0) { 1565 /* 1566 * We now just clear errors in this case 1567 * and let the residual be the notifier. 1568 */ 1569 bp->bio_error = 0; 1570 } else if ((softc->flags & SA_FLAG_EOF_PENDING) != 0) { 1571 /* 1572 * This can only happen if we're reading 1573 * in fixed length mode. In this case, 1574 * we dump the rest of the list the 1575 * same way. 1576 */ 1577 bp->bio_error = 0; 1578 if (bioq_first(&softc->bio_queue) != NULL) { 1579 biodone(done_bp); 1580 goto again; 1581 } 1582 } else if ((softc->flags & SA_FLAG_EIO_PENDING) != 0) { 1583 bp->bio_error = EIO; 1584 bp->bio_flags |= BIO_ERROR; 1585 } 1586 bp = bioq_first(&softc->bio_queue); 1587 /* 1588 * Only if we have no other buffers queued up 1589 * do we clear the pending error flag. 1590 */ 1591 if (bp == NULL) 1592 softc->flags &= ~SA_FLAG_ERR_PENDING; 1593 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 1594 ("sastart- ERR_PENDING now 0x%x, bp is %sNULL, " 1595 "%d more buffers queued up\n", 1596 (softc->flags & SA_FLAG_ERR_PENDING), 1597 (bp != NULL)? "not " : " ", softc->queue_count)); 1598 splx(s); 1599 xpt_release_ccb(start_ccb); 1600 biodone(done_bp); 1601 } else { 1602 u_int32_t length; 1603 1604 bioq_remove(&softc->bio_queue, bp); 1605 softc->queue_count--; 1606 1607 if ((softc->flags & SA_FLAG_FIXED) != 0) { 1608 if (softc->blk_shift != 0) { 1609 length = 1610 bp->bio_bcount >> softc->blk_shift; 1611 } else if (softc->media_blksize != 0) { 1612 length = bp->bio_bcount / 1613 softc->media_blksize; 1614 } else { 1615 bp->bio_error = EIO; 1616 xpt_print_path(periph->path); 1617 printf("zero blocksize for " 1618 "FIXED length writes?\n"); 1619 splx(s); 1620 biodone(bp); 1621 break; 1622 } 1623 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 1624 ("Fixed Record Count is %d\n", length)); 1625 } else { 1626 length = bp->bio_bcount; 1627 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_INFO, 1628 ("Variable Record Count is %d\n", length)); 1629 } 1630 devstat_start_transaction(&softc->device_stats); 1631 /* 1632 * Some people have theorized that we should 1633 * suppress illegal length indication if we are 1634 * running in variable block mode so that we don't 1635 * have to request sense every time our requested 1636 * block size is larger than the written block. 1637 * The residual information from the ccb allows 1638 * us to identify this situation anyway. The only 1639 * problem with this is that we will not get 1640 * information about blocks that are larger than 1641 * our read buffer unless we set the block size 1642 * in the mode page to something other than 0. 1643 * 1644 * I believe that this is a non-issue. If user apps 1645 * don't adjust their read size to match our record 1646 * size, that's just life. Anyway, the typical usage 1647 * would be to issue, e.g., 64KB reads and occasionally 1648 * have to do deal with 512 byte or 1KB intermediate 1649 * records. 1650 */ 1651 softc->dsreg = (bp->bio_cmd == BIO_READ)? 1652 MTIO_DSREG_RD : MTIO_DSREG_WR; 1653 scsi_sa_read_write(&start_ccb->csio, 0, sadone, 1654 MSG_SIMPLE_Q_TAG, (bp->bio_cmd == BIO_READ), 1655 FALSE, (softc->flags & SA_FLAG_FIXED) != 0, 1656 length, bp->bio_data, bp->bio_bcount, SSD_FULL_SIZE, 1657 IO_TIMEOUT); 1658 start_ccb->ccb_h.ccb_pflags &= ~SA_POSITION_UPDATED; 1659 Set_CCB_Type(start_ccb, SA_CCB_BUFFER_IO); 1660 start_ccb->ccb_h.ccb_bp = bp; 1661 bp = bioq_first(&softc->bio_queue); 1662 splx(s); 1663 xpt_action(start_ccb); 1664 } 1665 1666 if (bp != NULL) { 1667 /* Have more work to do, so ensure we stay scheduled */ 1668 xpt_schedule(periph, 1); 1669 } 1670 break; 1671 } 1672 case SA_STATE_ABNORMAL: 1673 default: 1674 panic("state 0x%x in sastart", softc->state); 1675 break; 1676 } 1677} 1678 1679 1680static void 1681sadone(struct cam_periph *periph, union ccb *done_ccb) 1682{ 1683 struct sa_softc *softc; 1684 struct ccb_scsiio *csio; 1685 1686 softc = (struct sa_softc *)periph->softc; 1687 csio = &done_ccb->csio; 1688 switch (CCB_Type(csio)) { 1689 case SA_CCB_BUFFER_IO: 1690 { 1691 struct bio *bp; 1692 int error; 1693 1694 softc->dsreg = MTIO_DSREG_REST; 1695 bp = (struct bio *)done_ccb->ccb_h.ccb_bp; 1696 error = 0; 1697 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 1698 if ((error = saerror(done_ccb, 0, 0)) == ERESTART) { 1699 /* 1700 * A retry was scheduled, so just return. 1701 */ 1702 return; 1703 } 1704 } 1705 1706 if (error == EIO) { 1707 int s; 1708 struct bio *q_bp; 1709 1710 /* 1711 * Catastrophic error. Mark the tape as frozen 1712 * (we no longer know tape position). 1713 * 1714 * Return all queued I/O with EIO, and unfreeze 1715 * our queue so that future transactions that 1716 * attempt to fix this problem can get to the 1717 * device. 1718 * 1719 */ 1720 1721 s = splbio(); 1722 softc->flags |= SA_FLAG_TAPE_FROZEN; 1723 while ((q_bp = bioq_first(&softc->bio_queue)) != NULL) { 1724 bioq_remove(&softc->bio_queue, q_bp); 1725 q_bp->bio_resid = q_bp->bio_bcount; 1726 biofinish(q_bp, NULL, EIO); 1727 } 1728 splx(s); 1729 } 1730 if (error != 0) { 1731 bp->bio_resid = bp->bio_bcount; 1732 bp->bio_error = error; 1733 bp->bio_flags |= BIO_ERROR; 1734 /* 1735 * In the error case, position is updated in saerror. 1736 */ 1737 } else { 1738 bp->bio_resid = csio->resid; 1739 bp->bio_error = 0; 1740 if (csio->resid != 0) { 1741 bp->bio_flags |= BIO_ERROR; 1742 } 1743 if (bp->bio_cmd == BIO_WRITE) { 1744 softc->flags |= SA_FLAG_TAPE_WRITTEN; 1745 softc->filemarks = 0; 1746 } 1747 if (!(csio->ccb_h.ccb_pflags & SA_POSITION_UPDATED) && 1748 (softc->blkno != (daddr_t) -1)) { 1749 if ((softc->flags & SA_FLAG_FIXED) != 0) { 1750 u_int32_t l; 1751 if (softc->blk_shift != 0) { 1752 l = bp->bio_bcount >> 1753 softc->blk_shift; 1754 } else { 1755 l = bp->bio_bcount / 1756 softc->media_blksize; 1757 } 1758 softc->blkno += (daddr_t) l; 1759 } else { 1760 softc->blkno++; 1761 } 1762 } 1763 } 1764 /* 1765 * If we had an error (immediate or pending), 1766 * release the device queue now. 1767 */ 1768 if (error || (softc->flags & SA_FLAG_ERR_PENDING)) 1769 cam_release_devq(done_ccb->ccb_h.path, 0, 0, 0, 0); 1770#ifdef CAMDEBUG 1771 if (error || bp->bio_resid) { 1772 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 1773 ("error %d resid %ld count %ld\n", error, 1774 bp->bio_resid, bp->bio_bcount)); 1775 } 1776#endif 1777 biofinish(bp, &softc->device_stats, 0); 1778 break; 1779 } 1780 case SA_CCB_WAITING: 1781 { 1782 /* Caller will release the CCB */ 1783 wakeup(&done_ccb->ccb_h.cbfcnp); 1784 return; 1785 } 1786 } 1787 xpt_release_ccb(done_ccb); 1788} 1789 1790/* 1791 * Mount the tape (make sure it's ready for I/O). 1792 */ 1793static int 1794samount(struct cam_periph *periph, int oflags, dev_t dev) 1795{ 1796 struct sa_softc *softc; 1797 union ccb *ccb; 1798 int error; 1799 1800 /* 1801 * oflags can be checked for 'kind' of open (read-only check) - later 1802 * dev can be checked for a control-mode or compression open - later 1803 */ 1804 UNUSED_PARAMETER(oflags); 1805 UNUSED_PARAMETER(dev); 1806 1807 1808 softc = (struct sa_softc *)periph->softc; 1809 1810 /* 1811 * This should determine if something has happend since the last 1812 * open/mount that would invalidate the mount. We do *not* want 1813 * to retry this command- we just want the status. But we only 1814 * do this if we're mounted already- if we're not mounted, 1815 * we don't care about the unit read state and can instead use 1816 * this opportunity to attempt to reserve the tape unit. 1817 */ 1818 1819 if (softc->flags & SA_FLAG_TAPE_MOUNTED) { 1820 ccb = cam_periph_getccb(periph, 1); 1821 scsi_test_unit_ready(&ccb->csio, 0, sadone, 1822 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT); 1823 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1824 &softc->device_stats); 1825 QFRLS(ccb); 1826 if (error == ENXIO) { 1827 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 1828 scsi_test_unit_ready(&ccb->csio, 0, sadone, 1829 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT); 1830 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1831 &softc->device_stats); 1832 QFRLS(ccb); 1833 } else if (error) { 1834 /* 1835 * We don't need to freeze the tape because we 1836 * will now attempt to rewind/load it. 1837 */ 1838 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 1839 if (CAM_DEBUGGED(ccb->ccb_h.path, CAM_DEBUG_INFO)) { 1840 xpt_print_path(ccb->ccb_h.path); 1841 printf("error %d on TUR in samount\n", error); 1842 } 1843 } 1844 } else { 1845 error = sareservereleaseunit(periph, TRUE); 1846 if (error) { 1847 return (error); 1848 } 1849 ccb = cam_periph_getccb(periph, 1); 1850 scsi_test_unit_ready(&ccb->csio, 0, sadone, 1851 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT); 1852 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1853 &softc->device_stats); 1854 QFRLS(ccb); 1855 } 1856 1857 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) { 1858 struct scsi_read_block_limits_data *rblim = NULL; 1859 int comp_enabled, comp_supported; 1860 u_int8_t write_protect, guessing = 0; 1861 1862 /* 1863 * Clear out old state. 1864 */ 1865 softc->flags &= ~(SA_FLAG_TAPE_WP|SA_FLAG_TAPE_WRITTEN| 1866 SA_FLAG_ERR_PENDING|SA_FLAG_COMP_ENABLED| 1867 SA_FLAG_COMP_SUPP|SA_FLAG_COMP_UNSUPP); 1868 softc->filemarks = 0; 1869 1870 /* 1871 * *Very* first off, make sure we're loaded to BOT. 1872 */ 1873 scsi_load_unload(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 1874 FALSE, FALSE, 1, SSD_FULL_SIZE, REWIND_TIMEOUT); 1875 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1876 &softc->device_stats); 1877 QFRLS(ccb); 1878 1879 /* 1880 * In case this doesn't work, do a REWIND instead 1881 */ 1882 if (error) { 1883 scsi_rewind(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, 1884 FALSE, SSD_FULL_SIZE, REWIND_TIMEOUT); 1885 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1886 &softc->device_stats); 1887 QFRLS(ccb); 1888 } 1889 if (error) { 1890 xpt_release_ccb(ccb); 1891 goto exit; 1892 } 1893 1894 /* 1895 * Do a dummy test read to force access to the 1896 * media so that the drive will really know what's 1897 * there. We actually don't really care what the 1898 * blocksize on tape is and don't expect to really 1899 * read a full record. 1900 */ 1901 rblim = (struct scsi_read_block_limits_data *) 1902 malloc(8192, M_TEMP, M_WAITOK); 1903 if (rblim == NULL) { 1904 xpt_print_path(ccb->ccb_h.path); 1905 printf("no memory for test read\n"); 1906 xpt_release_ccb(ccb); 1907 error = ENOMEM; 1908 goto exit; 1909 } 1910 1911 if ((softc->quirks & SA_QUIRK_NODREAD) == 0) { 1912 scsi_sa_read_write(&ccb->csio, 0, sadone, 1913 MSG_SIMPLE_Q_TAG, 1, FALSE, 0, 8192, 1914 (void *) rblim, 8192, SSD_FULL_SIZE, 1915 IO_TIMEOUT); 1916 (void) cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1917 &softc->device_stats); 1918 QFRLS(ccb); 1919 scsi_rewind(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, 1920 FALSE, SSD_FULL_SIZE, REWIND_TIMEOUT); 1921 error = cam_periph_runccb(ccb, saerror, CAM_RETRY_SELTO, 1922 SF_NO_PRINT | SF_RETRY_UA, 1923 &softc->device_stats); 1924 QFRLS(ccb); 1925 if (error) { 1926 xpt_print_path(ccb->ccb_h.path); 1927 printf("unable to rewind after test read\n"); 1928 xpt_release_ccb(ccb); 1929 goto exit; 1930 } 1931 } 1932 1933 /* 1934 * Next off, determine block limits. 1935 */ 1936 scsi_read_block_limits(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, 1937 rblim, SSD_FULL_SIZE, SCSIOP_TIMEOUT); 1938 1939 error = cam_periph_runccb(ccb, saerror, CAM_RETRY_SELTO, 1940 SF_NO_PRINT | SF_RETRY_UA, &softc->device_stats); 1941 1942 QFRLS(ccb); 1943 xpt_release_ccb(ccb); 1944 1945 if (error != 0) { 1946 /* 1947 * If it's less than SCSI-2, READ BLOCK LIMITS is not 1948 * a MANDATORY command. Anyway- it doesn't matter- 1949 * we can proceed anyway. 1950 */ 1951 softc->blk_gran = 0; 1952 softc->max_blk = ~0; 1953 softc->min_blk = 0; 1954 } else { 1955 if (softc->scsi_rev >= SCSI_REV_SPC) { 1956 softc->blk_gran = RBL_GRAN(rblim); 1957 } else { 1958 softc->blk_gran = 0; 1959 } 1960 /* 1961 * We take max_blk == min_blk to mean a default to 1962 * fixed mode- but note that whatever we get out of 1963 * sagetparams below will actually determine whether 1964 * we are actually *in* fixed mode. 1965 */ 1966 softc->max_blk = scsi_3btoul(rblim->maximum); 1967 softc->min_blk = scsi_2btoul(rblim->minimum); 1968 1969 1970 } 1971 /* 1972 * Next, perform a mode sense to determine 1973 * current density, blocksize, compression etc. 1974 */ 1975 error = sagetparams(periph, SA_PARAM_ALL, 1976 &softc->media_blksize, 1977 &softc->media_density, 1978 &softc->media_numblks, 1979 &softc->buffer_mode, &write_protect, 1980 &softc->speed, &comp_supported, 1981 &comp_enabled, &softc->comp_algorithm, 1982 NULL); 1983 1984 if (error != 0) { 1985 /* 1986 * We could work a little harder here. We could 1987 * adjust our attempts to get information. It 1988 * might be an ancient tape drive. If someone 1989 * nudges us, we'll do that. 1990 */ 1991 goto exit; 1992 } 1993 1994 /* 1995 * If no quirk has determined that this is a device that is 1996 * preferred to be in fixed or variable mode, now is the time 1997 * to find out. 1998 */ 1999 if ((softc->quirks & (SA_QUIRK_FIXED|SA_QUIRK_VARIABLE)) == 0) { 2000 guessing = 1; 2001 /* 2002 * This could be expensive to find out. Luckily we 2003 * only need to do this once. If we start out in 2004 * 'default' mode, try and set ourselves to one 2005 * of the densities that would determine a wad 2006 * of other stuff. Go from highest to lowest. 2007 */ 2008 if (softc->media_density == SCSI_DEFAULT_DENSITY) { 2009 int i; 2010 static u_int8_t ctry[] = { 2011 SCSI_DENSITY_HALFINCH_PE, 2012 SCSI_DENSITY_HALFINCH_6250C, 2013 SCSI_DENSITY_HALFINCH_6250, 2014 SCSI_DENSITY_HALFINCH_1600, 2015 SCSI_DENSITY_HALFINCH_800, 2016 SCSI_DENSITY_QIC_4GB, 2017 SCSI_DENSITY_QIC_2GB, 2018 SCSI_DENSITY_QIC_525_320, 2019 SCSI_DENSITY_QIC_150, 2020 SCSI_DENSITY_QIC_120, 2021 SCSI_DENSITY_QIC_24, 2022 SCSI_DENSITY_QIC_11_9TRK, 2023 SCSI_DENSITY_QIC_11_4TRK, 2024 SCSI_DENSITY_QIC_1320, 2025 SCSI_DENSITY_QIC_3080, 2026 0 2027 }; 2028 for (i = 0; ctry[i]; i++) { 2029 error = sasetparams(periph, 2030 SA_PARAM_DENSITY, 0, ctry[i], 2031 0, SF_NO_PRINT); 2032 if (error == 0) { 2033 softc->media_density = ctry[i]; 2034 break; 2035 } 2036 } 2037 } 2038 switch (softc->media_density) { 2039 case SCSI_DENSITY_QIC_11_4TRK: 2040 case SCSI_DENSITY_QIC_11_9TRK: 2041 case SCSI_DENSITY_QIC_24: 2042 case SCSI_DENSITY_QIC_120: 2043 case SCSI_DENSITY_QIC_150: 2044 case SCSI_DENSITY_QIC_525_320: 2045 case SCSI_DENSITY_QIC_1320: 2046 case SCSI_DENSITY_QIC_3080: 2047 softc->quirks &= ~SA_QUIRK_2FM; 2048 softc->quirks |= SA_QUIRK_FIXED|SA_QUIRK_1FM; 2049 softc->last_media_blksize = 512; 2050 break; 2051 case SCSI_DENSITY_QIC_4GB: 2052 case SCSI_DENSITY_QIC_2GB: 2053 softc->quirks &= ~SA_QUIRK_2FM; 2054 softc->quirks |= SA_QUIRK_FIXED|SA_QUIRK_1FM; 2055 softc->last_media_blksize = 1024; 2056 break; 2057 default: 2058 softc->last_media_blksize = 2059 softc->media_blksize; 2060 softc->quirks |= SA_QUIRK_VARIABLE; 2061 break; 2062 } 2063 } 2064 2065 /* 2066 * If no quirk has determined that this is a device that needs 2067 * to have 2 Filemarks at EOD, now is the time to find out. 2068 */ 2069 2070 if ((softc->quirks & SA_QUIRK_2FM) == 0) { 2071 switch (softc->media_density) { 2072 case SCSI_DENSITY_HALFINCH_800: 2073 case SCSI_DENSITY_HALFINCH_1600: 2074 case SCSI_DENSITY_HALFINCH_6250: 2075 case SCSI_DENSITY_HALFINCH_6250C: 2076 case SCSI_DENSITY_HALFINCH_PE: 2077 softc->quirks &= ~SA_QUIRK_1FM; 2078 softc->quirks |= SA_QUIRK_2FM; 2079 break; 2080 default: 2081 break; 2082 } 2083 } 2084 2085 /* 2086 * Now validate that some info we got makes sense. 2087 */ 2088 if ((softc->max_blk < softc->media_blksize) || 2089 (softc->min_blk > softc->media_blksize && 2090 softc->media_blksize)) { 2091 xpt_print_path(ccb->ccb_h.path); 2092 printf("BLOCK LIMITS (%d..%d) could not match current " 2093 "block settings (%d)- adjusting\n", softc->min_blk, 2094 softc->max_blk, softc->media_blksize); 2095 softc->max_blk = softc->min_blk = 2096 softc->media_blksize; 2097 } 2098 2099 /* 2100 * Now put ourselves into the right frame of mind based 2101 * upon quirks... 2102 */ 2103tryagain: 2104 /* 2105 * If we want to be in FIXED mode and our current blocksize 2106 * is not equal to our last blocksize (if nonzero), try and 2107 * set ourselves to this last blocksize (as the 'preferred' 2108 * block size). The initial quirkmatch at registry sets the 2109 * initial 'last' blocksize. If, for whatever reason, this 2110 * 'last' blocksize is zero, set the blocksize to 512, 2111 * or min_blk if that's larger. 2112 */ 2113 if ((softc->quirks & SA_QUIRK_FIXED) && 2114 (softc->quirks & SA_QUIRK_NO_MODESEL) == 0 && 2115 (softc->media_blksize != softc->last_media_blksize)) { 2116 softc->media_blksize = softc->last_media_blksize; 2117 if (softc->media_blksize == 0) { 2118 softc->media_blksize = 512; 2119 if (softc->media_blksize < softc->min_blk) { 2120 softc->media_blksize = softc->min_blk; 2121 } 2122 } 2123 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, 2124 softc->media_blksize, 0, 0, SF_NO_PRINT); 2125 if (error) { 2126 xpt_print_path(ccb->ccb_h.path); 2127 printf("unable to set fixed blocksize to %d\n", 2128 softc->media_blksize); 2129 goto exit; 2130 } 2131 } 2132 2133 if ((softc->quirks & SA_QUIRK_VARIABLE) && 2134 (softc->media_blksize != 0)) { 2135 softc->last_media_blksize = softc->media_blksize; 2136 softc->media_blksize = 0; 2137 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, 2138 0, 0, 0, SF_NO_PRINT); 2139 if (error) { 2140 /* 2141 * If this fails and we were guessing, just 2142 * assume that we got it wrong and go try 2143 * fixed block mode. Don't even check against 2144 * density code at this point. 2145 */ 2146 if (guessing) { 2147 softc->quirks &= ~SA_QUIRK_VARIABLE; 2148 softc->quirks |= SA_QUIRK_FIXED; 2149 if (softc->last_media_blksize == 0) 2150 softc->last_media_blksize = 512; 2151 goto tryagain; 2152 } 2153 xpt_print_path(ccb->ccb_h.path); 2154 printf("unable to set variable blocksize\n"); 2155 goto exit; 2156 } 2157 } 2158 2159 /* 2160 * Now that we have the current block size, 2161 * set up some parameters for sastart's usage. 2162 */ 2163 if (softc->media_blksize) { 2164 softc->flags |= SA_FLAG_FIXED; 2165 if (powerof2(softc->media_blksize)) { 2166 softc->blk_shift = 2167 ffs(softc->media_blksize) - 1; 2168 softc->blk_mask = softc->media_blksize - 1; 2169 } else { 2170 softc->blk_mask = ~0; 2171 softc->blk_shift = 0; 2172 } 2173 } else { 2174 /* 2175 * The SCSI-3 spec allows 0 to mean "unspecified". 2176 * The SCSI-1 spec allows 0 to mean 'infinite'. 2177 * 2178 * Either works here. 2179 */ 2180 if (softc->max_blk == 0) { 2181 softc->max_blk = ~0; 2182 } 2183 softc->blk_shift = 0; 2184 if (softc->blk_gran != 0) { 2185 softc->blk_mask = softc->blk_gran - 1; 2186 } else { 2187 softc->blk_mask = 0; 2188 } 2189 } 2190 2191 if (write_protect) 2192 softc->flags |= SA_FLAG_TAPE_WP; 2193 2194 if (comp_supported) { 2195 if (softc->saved_comp_algorithm == 0) 2196 softc->saved_comp_algorithm = 2197 softc->comp_algorithm; 2198 softc->flags |= SA_FLAG_COMP_SUPP; 2199 if (comp_enabled) 2200 softc->flags |= SA_FLAG_COMP_ENABLED; 2201 } else 2202 softc->flags |= SA_FLAG_COMP_UNSUPP; 2203 2204 if ((softc->buffer_mode == SMH_SA_BUF_MODE_NOBUF) && 2205 (softc->quirks & SA_QUIRK_NO_MODESEL) == 0) { 2206 error = sasetparams(periph, SA_PARAM_BUFF_MODE, 0, 2207 0, 0, SF_NO_PRINT); 2208 if (error == 0) 2209 softc->buffer_mode = SMH_SA_BUF_MODE_SIBUF; 2210 xpt_print_path(ccb->ccb_h.path); 2211 printf("unable to set buffered mode\n"); 2212 error = 0; /* not an error */ 2213 } 2214 2215 2216 if (error == 0) { 2217 softc->flags |= SA_FLAG_TAPE_MOUNTED; 2218 } 2219exit: 2220 if (rblim != NULL) 2221 free(rblim, M_TEMP); 2222 2223 if (error != 0) { 2224 softc->dsreg = MTIO_DSREG_NIL; 2225 } else { 2226 softc->fileno = softc->blkno = 0; 2227 softc->dsreg = MTIO_DSREG_REST; 2228 } 2229#ifdef SA_1FM_AT_EOD 2230 if ((softc->quirks & SA_QUIRK_2FM) == 0) 2231 softc->quirks |= SA_QUIRK_1FM; 2232#else 2233 if ((softc->quirks & SA_QUIRK_1FM) == 0) 2234 softc->quirks |= SA_QUIRK_2FM; 2235#endif 2236 } else 2237 xpt_release_ccb(ccb); 2238 2239 /* 2240 * If we return an error, we're not mounted any more, 2241 * so release any device reservation. 2242 */ 2243 if (error != 0) { 2244 (void) sareservereleaseunit(periph, FALSE); 2245 } else { 2246 /* 2247 * Clear I/O residual. 2248 */ 2249 softc->last_io_resid = 0; 2250 softc->last_ctl_resid = 0; 2251 } 2252 return (error); 2253} 2254 2255/* 2256 * How many filemarks do we need to write if we were to terminate the 2257 * tape session right now? Note that this can be a negative number 2258 */ 2259 2260static int 2261samarkswanted(struct cam_periph *periph) 2262{ 2263 int markswanted; 2264 struct sa_softc *softc; 2265 2266 softc = (struct sa_softc *)periph->softc; 2267 markswanted = 0; 2268 if ((softc->flags & SA_FLAG_TAPE_WRITTEN) != 0) { 2269 markswanted++; 2270 if (softc->quirks & SA_QUIRK_2FM) 2271 markswanted++; 2272 } 2273 markswanted -= softc->filemarks; 2274 return (markswanted); 2275} 2276 2277static int 2278sacheckeod(struct cam_periph *periph) 2279{ 2280 int error; 2281 int markswanted; 2282 struct sa_softc *softc; 2283 2284 softc = (struct sa_softc *)periph->softc; 2285 markswanted = samarkswanted(periph); 2286 2287 if (markswanted > 0) { 2288 error = sawritefilemarks(periph, markswanted, FALSE); 2289 } else { 2290 error = 0; 2291 } 2292 return (error); 2293} 2294 2295static int 2296saerror(union ccb *ccb, u_int32_t cflgs, u_int32_t sflgs) 2297{ 2298 static const char *toobig = 2299 "%d-byte tape record bigger than suplied buffer\n"; 2300 struct cam_periph *periph; 2301 struct sa_softc *softc; 2302 struct ccb_scsiio *csio; 2303 struct scsi_sense_data *sense; 2304 u_int32_t resid = 0; 2305 int32_t info = 0; 2306 cam_status status; 2307 int error_code, sense_key, asc, ascq, error, aqvalid; 2308 2309 periph = xpt_path_periph(ccb->ccb_h.path); 2310 softc = (struct sa_softc *)periph->softc; 2311 csio = &ccb->csio; 2312 sense = &csio->sense_data; 2313 scsi_extract_sense(sense, &error_code, &sense_key, &asc, &ascq); 2314 aqvalid = sense->extra_len >= 6; 2315 error = 0; 2316 2317 status = csio->ccb_h.status & CAM_STATUS_MASK; 2318 2319 /* 2320 * Calculate/latch up, any residuals... We do this in a funny 2-step 2321 * so we can print stuff here if we have CAM_DEBUG enabled for this 2322 * unit. 2323 */ 2324 if (status == CAM_SCSI_STATUS_ERROR) { 2325 if ((sense->error_code & SSD_ERRCODE_VALID) != 0) { 2326 info = (int32_t) scsi_4btoul(sense->info); 2327 resid = info; 2328 if ((softc->flags & SA_FLAG_FIXED) != 0) 2329 resid *= softc->media_blksize; 2330 } else { 2331 resid = csio->dxfer_len; 2332 info = resid; 2333 if ((softc->flags & SA_FLAG_FIXED) != 0) { 2334 if (softc->media_blksize) 2335 info /= softc->media_blksize; 2336 } 2337 } 2338 if (CCB_Type(csio) == SA_CCB_BUFFER_IO) { 2339 bcopy((caddr_t) sense, (caddr_t) &softc->last_io_sense, 2340 sizeof (struct scsi_sense_data)); 2341 bcopy(csio->cdb_io.cdb_bytes, softc->last_io_cdb, 2342 (int) csio->cdb_len); 2343 softc->last_io_resid = resid; 2344 softc->last_resid_was_io = 1; 2345 } else { 2346 bcopy((caddr_t) sense, (caddr_t) &softc->last_ctl_sense, 2347 sizeof (struct scsi_sense_data)); 2348 bcopy(csio->cdb_io.cdb_bytes, softc->last_ctl_cdb, 2349 (int) csio->cdb_len); 2350 softc->last_ctl_resid = resid; 2351 softc->last_resid_was_io = 0; 2352 } 2353 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("CDB[0]=0x%x Key 0x%x " 2354 "ASC/ASCQ 0x%x/0x%x CAM STATUS 0x%x flags 0x%x resid %d " 2355 "dxfer_len %d\n", csio->cdb_io.cdb_bytes[0] & 0xff, 2356 sense_key, asc, ascq, status, 2357 sense->flags & ~SSD_KEY_RESERVED, resid, csio->dxfer_len)); 2358 } else { 2359 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 2360 ("Cam Status 0x%x\n", status)); 2361 } 2362 2363 switch (status) { 2364 case CAM_REQ_CMP: 2365 return (0); 2366 case CAM_SCSI_STATUS_ERROR: 2367 /* 2368 * If a read/write command, we handle it here. 2369 */ 2370 if (CCB_Type(csio) != SA_CCB_WAITING) { 2371 break; 2372 } 2373 /* 2374 * If this was just EOM/EOP, Filemark, Setmark or ILI detected 2375 * on a non read/write command, we assume it's not an error 2376 * and propagate the residule and return. 2377 */ 2378 if ((aqvalid && asc == 0 && ascq > 0 && ascq <= 5) || 2379 (aqvalid == 0 && sense_key == SSD_KEY_NO_SENSE)) { 2380 csio->resid = resid; 2381 QFRLS(ccb); 2382 return (0); 2383 } 2384 /* 2385 * Otherwise, we let the common code handle this. 2386 */ 2387 return (cam_periph_error(ccb, cflgs, sflgs, &softc->saved_ccb)); 2388 2389 /* 2390 * XXX: To Be Fixed 2391 * We cannot depend upon CAM honoring retry counts for these. 2392 */ 2393 case CAM_SCSI_BUS_RESET: 2394 case CAM_BDR_SENT: 2395 if (ccb->ccb_h.retry_count <= 0) { 2396 return (EIO); 2397 break; 2398 } 2399 /* FALLTHROUGH */ 2400 default: 2401 return (cam_periph_error(ccb, cflgs, sflgs, &softc->saved_ccb)); 2402 } 2403 2404 /* 2405 * Handle filemark, end of tape, mismatched record sizes.... 2406 * From this point out, we're only handling read/write cases. 2407 * Handle writes && reads differently. 2408 */ 2409 2410 if (csio->cdb_io.cdb_bytes[0] == SA_WRITE) { 2411 if (sense_key == SSD_KEY_VOLUME_OVERFLOW) { 2412 csio->resid = resid; 2413 error = ENOSPC; 2414 } else if (sense->flags & SSD_EOM) { 2415 softc->flags |= SA_FLAG_EOM_PENDING; 2416 /* 2417 * Grotesque as it seems, the few times 2418 * I've actually seen a non-zero resid, 2419 * the tape drive actually lied and had 2420 * writtent all the data!. 2421 */ 2422 csio->resid = 0; 2423 } 2424 } else { 2425 csio->resid = resid; 2426 if (sense_key == SSD_KEY_BLANK_CHECK) { 2427 if (softc->quirks & SA_QUIRK_1FM) { 2428 error = 0; 2429 softc->flags |= SA_FLAG_EOM_PENDING; 2430 } else { 2431 error = EIO; 2432 } 2433 } else if (sense->flags & SSD_FILEMARK) { 2434 if (softc->flags & SA_FLAG_FIXED) { 2435 error = -1; 2436 softc->flags |= SA_FLAG_EOF_PENDING; 2437 } 2438 /* 2439 * Unconditionally, if we detected a filemark on a read, 2440 * mark that we've run moved a file ahead. 2441 */ 2442 if (softc->fileno != (daddr_t) -1) { 2443 softc->fileno++; 2444 softc->blkno = 0; 2445 csio->ccb_h.ccb_pflags |= SA_POSITION_UPDATED; 2446 } 2447 } 2448 } 2449 2450 /* 2451 * Incorrect Length usually applies to read, but can apply to writes. 2452 */ 2453 if (error == 0 && (sense->flags & SSD_ILI)) { 2454 if (info < 0) { 2455 xpt_print_path(csio->ccb_h.path); 2456 printf(toobig, csio->dxfer_len - info); 2457 csio->resid = csio->dxfer_len; 2458 error = EIO; 2459 } else { 2460 csio->resid = resid; 2461 if (softc->flags & SA_FLAG_FIXED) { 2462 softc->flags |= SA_FLAG_EIO_PENDING; 2463 } 2464 /* 2465 * Bump the block number if we hadn't seen a filemark. 2466 * Do this independent of errors (we've moved anyway). 2467 */ 2468 if ((sense->flags & SSD_FILEMARK) == 0) { 2469 if (softc->blkno != (daddr_t) -1) { 2470 softc->blkno++; 2471 csio->ccb_h.ccb_pflags |= 2472 SA_POSITION_UPDATED; 2473 } 2474 } 2475 } 2476 } 2477 2478 if (error <= 0) { 2479 /* 2480 * Unfreeze the queue if frozen as we're not returning anything 2481 * to our waiters that would indicate an I/O error has occurred 2482 * (yet). 2483 */ 2484 QFRLS(ccb); 2485 error = 0; 2486 } 2487 return (error); 2488} 2489 2490static int 2491sagetparams(struct cam_periph *periph, sa_params params_to_get, 2492 u_int32_t *blocksize, u_int8_t *density, u_int32_t *numblocks, 2493 int *buff_mode, u_int8_t *write_protect, u_int8_t *speed, 2494 int *comp_supported, int *comp_enabled, u_int32_t *comp_algorithm, 2495 sa_comp_t *tcs) 2496{ 2497 union ccb *ccb; 2498 void *mode_buffer; 2499 struct scsi_mode_header_6 *mode_hdr; 2500 struct scsi_mode_blk_desc *mode_blk; 2501 int mode_buffer_len; 2502 struct sa_softc *softc; 2503 u_int8_t cpage; 2504 int error; 2505 cam_status status; 2506 2507 softc = (struct sa_softc *)periph->softc; 2508 ccb = cam_periph_getccb(periph, 1); 2509 if (softc->quirks & SA_QUIRK_NO_CPAGE) 2510 cpage = SA_DEVICE_CONFIGURATION_PAGE; 2511 else 2512 cpage = SA_DATA_COMPRESSION_PAGE; 2513 2514retry: 2515 mode_buffer_len = sizeof(*mode_hdr) + sizeof(*mode_blk); 2516 2517 if (params_to_get & SA_PARAM_COMPRESSION) { 2518 if (softc->quirks & SA_QUIRK_NOCOMP) { 2519 *comp_supported = FALSE; 2520 params_to_get &= ~SA_PARAM_COMPRESSION; 2521 } else 2522 mode_buffer_len += sizeof (sa_comp_t); 2523 } 2524 2525 mode_buffer = malloc(mode_buffer_len, M_TEMP, M_WAITOK | M_ZERO); 2526 mode_hdr = (struct scsi_mode_header_6 *)mode_buffer; 2527 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 2528 2529 /* it is safe to retry this */ 2530 scsi_mode_sense(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 2531 SMS_PAGE_CTRL_CURRENT, (params_to_get & SA_PARAM_COMPRESSION) ? 2532 cpage : SMS_VENDOR_SPECIFIC_PAGE, mode_buffer, mode_buffer_len, 2533 SSD_FULL_SIZE, SCSIOP_TIMEOUT); 2534 2535 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2536 &softc->device_stats); 2537 QFRLS(ccb); 2538 2539 status = ccb->ccb_h.status & CAM_STATUS_MASK; 2540 2541 if (error == EINVAL && (params_to_get & SA_PARAM_COMPRESSION) != 0) { 2542 /* 2543 * Hmm. Let's see if we can try another page... 2544 * If we've already done that, give up on compression 2545 * for this device and remember this for the future 2546 * and attempt the request without asking for compression 2547 * info. 2548 */ 2549 if (cpage == SA_DATA_COMPRESSION_PAGE) { 2550 cpage = SA_DEVICE_CONFIGURATION_PAGE; 2551 goto retry; 2552 } 2553 softc->quirks |= SA_QUIRK_NOCOMP; 2554 free(mode_buffer, M_TEMP); 2555 goto retry; 2556 } else if (status == CAM_SCSI_STATUS_ERROR) { 2557 /* Tell the user about the fatal error. */ 2558 scsi_sense_print(&ccb->csio); 2559 goto sagetparamsexit; 2560 } 2561 2562 /* 2563 * If the user only wants the compression information, and 2564 * the device doesn't send back the block descriptor, it's 2565 * no big deal. If the user wants more than just 2566 * compression, though, and the device doesn't pass back the 2567 * block descriptor, we need to send another mode sense to 2568 * get the block descriptor. 2569 */ 2570 if ((mode_hdr->blk_desc_len == 0) && 2571 (params_to_get & SA_PARAM_COMPRESSION) && 2572 (params_to_get & ~(SA_PARAM_COMPRESSION))) { 2573 2574 /* 2575 * Decrease the mode buffer length by the size of 2576 * the compression page, to make sure the data 2577 * there doesn't get overwritten. 2578 */ 2579 mode_buffer_len -= sizeof (sa_comp_t); 2580 2581 /* 2582 * Now move the compression page that we presumably 2583 * got back down the memory chunk a little bit so 2584 * it doesn't get spammed. 2585 */ 2586 bcopy(&mode_hdr[0], &mode_hdr[1], sizeof (sa_comp_t)); 2587 bzero(&mode_hdr[0], sizeof (mode_hdr[0])); 2588 2589 /* 2590 * Now, we issue another mode sense and just ask 2591 * for the block descriptor, etc. 2592 */ 2593 2594 scsi_mode_sense(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 2595 SMS_PAGE_CTRL_CURRENT, SMS_VENDOR_SPECIFIC_PAGE, 2596 mode_buffer, mode_buffer_len, SSD_FULL_SIZE, 2597 SCSIOP_TIMEOUT); 2598 2599 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2600 &softc->device_stats); 2601 QFRLS(ccb); 2602 2603 if (error != 0) 2604 goto sagetparamsexit; 2605 } 2606 2607 if (params_to_get & SA_PARAM_BLOCKSIZE) 2608 *blocksize = scsi_3btoul(mode_blk->blklen); 2609 2610 if (params_to_get & SA_PARAM_NUMBLOCKS) 2611 *numblocks = scsi_3btoul(mode_blk->nblocks); 2612 2613 if (params_to_get & SA_PARAM_BUFF_MODE) 2614 *buff_mode = mode_hdr->dev_spec & SMH_SA_BUF_MODE_MASK; 2615 2616 if (params_to_get & SA_PARAM_DENSITY) 2617 *density = mode_blk->density; 2618 2619 if (params_to_get & SA_PARAM_WP) 2620 *write_protect = (mode_hdr->dev_spec & SMH_SA_WP)? TRUE : FALSE; 2621 2622 if (params_to_get & SA_PARAM_SPEED) 2623 *speed = mode_hdr->dev_spec & SMH_SA_SPEED_MASK; 2624 2625 if (params_to_get & SA_PARAM_COMPRESSION) { 2626 sa_comp_t *ntcs = (sa_comp_t *) &mode_blk[1]; 2627 if (cpage == SA_DATA_COMPRESSION_PAGE) { 2628 struct scsi_data_compression_page *cp = &ntcs->dcomp; 2629 *comp_supported = 2630 (cp->dce_and_dcc & SA_DCP_DCC)? TRUE : FALSE; 2631 *comp_enabled = 2632 (cp->dce_and_dcc & SA_DCP_DCE)? TRUE : FALSE; 2633 *comp_algorithm = scsi_4btoul(cp->comp_algorithm); 2634 } else { 2635 struct scsi_dev_conf_page *cp = &ntcs->dconf; 2636 /* 2637 * We don't really know whether this device supports 2638 * Data Compression if the the algorithm field is 2639 * zero. Just say we do. 2640 */ 2641 *comp_supported = TRUE; 2642 *comp_enabled = 2643 (cp->sel_comp_alg != SA_COMP_NONE)? TRUE : FALSE; 2644 *comp_algorithm = cp->sel_comp_alg; 2645 } 2646 if (tcs != NULL) 2647 bcopy(ntcs, tcs, sizeof (sa_comp_t)); 2648 } 2649 2650 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 2651 int idx; 2652 char *xyz = mode_buffer; 2653 xpt_print_path(periph->path); 2654 printf("Mode Sense Data="); 2655 for (idx = 0; idx < mode_buffer_len; idx++) 2656 printf(" 0x%02x", xyz[idx] & 0xff); 2657 printf("\n"); 2658 } 2659 2660sagetparamsexit: 2661 2662 xpt_release_ccb(ccb); 2663 free(mode_buffer, M_TEMP); 2664 return (error); 2665} 2666 2667/* 2668 * The purpose of this function is to set one of four different parameters 2669 * for a tape drive: 2670 * - blocksize 2671 * - density 2672 * - compression / compression algorithm 2673 * - buffering mode 2674 * 2675 * The assumption is that this will be called from saioctl(), and therefore 2676 * from a process context. Thus the waiting malloc calls below. If that 2677 * assumption ever changes, the malloc calls should be changed to be 2678 * NOWAIT mallocs. 2679 * 2680 * Any or all of the four parameters may be set when this function is 2681 * called. It should handle setting more than one parameter at once. 2682 */ 2683static int 2684sasetparams(struct cam_periph *periph, sa_params params_to_set, 2685 u_int32_t blocksize, u_int8_t density, u_int32_t calg, 2686 u_int32_t sense_flags) 2687{ 2688 struct sa_softc *softc; 2689 u_int32_t current_blocksize; 2690 u_int32_t current_calg; 2691 u_int8_t current_density; 2692 u_int8_t current_speed; 2693 int comp_enabled, comp_supported; 2694 void *mode_buffer; 2695 int mode_buffer_len; 2696 struct scsi_mode_header_6 *mode_hdr; 2697 struct scsi_mode_blk_desc *mode_blk; 2698 sa_comp_t *ccomp, *cpage; 2699 int buff_mode; 2700 union ccb *ccb = NULL; 2701 int error; 2702 2703 softc = (struct sa_softc *)periph->softc; 2704 2705 ccomp = malloc(sizeof (sa_comp_t), M_TEMP, M_WAITOK); 2706 2707 /* 2708 * Since it doesn't make sense to set the number of blocks, or 2709 * write protection, we won't try to get the current value. We 2710 * always want to get the blocksize, so we can set it back to the 2711 * proper value. 2712 */ 2713 error = sagetparams(periph, 2714 params_to_set | SA_PARAM_BLOCKSIZE | SA_PARAM_SPEED, 2715 ¤t_blocksize, ¤t_density, NULL, &buff_mode, NULL, 2716 ¤t_speed, &comp_supported, &comp_enabled, 2717 ¤t_calg, ccomp); 2718 2719 if (error != 0) { 2720 free(ccomp, M_TEMP); 2721 return (error); 2722 } 2723 2724 mode_buffer_len = sizeof(*mode_hdr) + sizeof(*mode_blk); 2725 if (params_to_set & SA_PARAM_COMPRESSION) 2726 mode_buffer_len += sizeof (sa_comp_t); 2727 2728 mode_buffer = malloc(mode_buffer_len, M_TEMP, M_WAITOK | M_ZERO); 2729 2730 mode_hdr = (struct scsi_mode_header_6 *)mode_buffer; 2731 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 2732 2733 ccb = cam_periph_getccb(periph, 1); 2734 2735retry: 2736 2737 if (params_to_set & SA_PARAM_COMPRESSION) { 2738 if (mode_blk) { 2739 cpage = (sa_comp_t *)&mode_blk[1]; 2740 } else { 2741 cpage = (sa_comp_t *)&mode_hdr[1]; 2742 } 2743 bcopy(ccomp, cpage, sizeof (sa_comp_t)); 2744 cpage->hdr.pagecode &= ~0x80; 2745 } else 2746 cpage = NULL; 2747 2748 /* 2749 * If the caller wants us to set the blocksize, use the one they 2750 * pass in. Otherwise, use the blocksize we got back from the 2751 * mode select above. 2752 */ 2753 if (mode_blk) { 2754 if (params_to_set & SA_PARAM_BLOCKSIZE) 2755 scsi_ulto3b(blocksize, mode_blk->blklen); 2756 else 2757 scsi_ulto3b(current_blocksize, mode_blk->blklen); 2758 2759 /* 2760 * Set density if requested, else preserve old density. 2761 * SCSI_SAME_DENSITY only applies to SCSI-2 or better 2762 * devices, else density we've latched up in our softc. 2763 */ 2764 if (params_to_set & SA_PARAM_DENSITY) { 2765 mode_blk->density = density; 2766 } else if (softc->scsi_rev > SCSI_REV_CCS) { 2767 mode_blk->density = SCSI_SAME_DENSITY; 2768 } else { 2769 mode_blk->density = softc->media_density; 2770 } 2771 } 2772 2773 /* 2774 * For mode selects, these two fields must be zero. 2775 */ 2776 mode_hdr->data_length = 0; 2777 mode_hdr->medium_type = 0; 2778 2779 /* set the speed to the current value */ 2780 mode_hdr->dev_spec = current_speed; 2781 2782 /* set single-initiator buffering mode */ 2783 mode_hdr->dev_spec |= SMH_SA_BUF_MODE_SIBUF; 2784 2785 if (mode_blk) 2786 mode_hdr->blk_desc_len = sizeof(struct scsi_mode_blk_desc); 2787 else 2788 mode_hdr->blk_desc_len = 0; 2789 2790 /* 2791 * First, if the user wants us to set the compression algorithm or 2792 * just turn compression on, check to make sure that this drive 2793 * supports compression. 2794 */ 2795 if (params_to_set & SA_PARAM_COMPRESSION) { 2796 /* 2797 * If the compression algorithm is 0, disable compression. 2798 * If the compression algorithm is non-zero, enable 2799 * compression and set the compression type to the 2800 * specified compression algorithm, unless the algorithm is 2801 * MT_COMP_ENABLE. In that case, we look at the 2802 * compression algorithm that is currently set and if it is 2803 * non-zero, we leave it as-is. If it is zero, and we have 2804 * saved a compression algorithm from a time when 2805 * compression was enabled before, set the compression to 2806 * the saved value. 2807 */ 2808 switch (ccomp->hdr.pagecode & ~0x80) { 2809 case SA_DATA_COMPRESSION_PAGE: 2810 if (ccomp->dcomp.dce_and_dcc & SA_DCP_DCC) { 2811 struct scsi_data_compression_page *dcp = &cpage->dcomp; 2812 if (calg == 0) { 2813 /* 2814 * Disable compression, but leave the 2815 * decompression and the capability bit 2816 * alone. 2817 */ 2818 dcp->dce_and_dcc = SA_DCP_DCC; 2819 dcp->dde_and_red |= SA_DCP_DDE; 2820 break; 2821 } 2822 /* enable compression && decompression */ 2823 dcp->dce_and_dcc = SA_DCP_DCE | SA_DCP_DCC; 2824 dcp->dde_and_red |= SA_DCP_DDE; 2825 /* 2826 * If there, use compression algorithm from caller. 2827 * Otherwise, if there's a saved compression algorithm 2828 * and there is no current algorithm, use the saved 2829 * algorithm. Else parrot back what we got and hope 2830 * for the best. 2831 */ 2832 if (calg != MT_COMP_ENABLE) { 2833 scsi_ulto4b(calg, dcp->comp_algorithm); 2834 scsi_ulto4b(calg, dcp->decomp_algorithm); 2835 } else if (scsi_4btoul(dcp->comp_algorithm) == 0 && 2836 softc->saved_comp_algorithm != 0) { 2837 scsi_ulto4b(softc->saved_comp_algorithm, 2838 dcp->comp_algorithm); 2839 scsi_ulto4b(softc->saved_comp_algorithm, 2840 dcp->decomp_algorithm); 2841 } 2842 break; 2843 } 2844 case SA_DEVICE_CONFIGURATION_PAGE: 2845 { 2846 struct scsi_dev_conf_page *dcp = &cpage->dconf; 2847 if (calg == 0) { 2848 dcp->sel_comp_alg = SA_COMP_NONE; 2849 break; 2850 } 2851 if (calg != MT_COMP_ENABLE) { 2852 dcp->sel_comp_alg = calg; 2853 } else if (dcp->sel_comp_alg == SA_COMP_NONE && 2854 softc->saved_comp_algorithm != 0) { 2855 dcp->sel_comp_alg = softc->saved_comp_algorithm; 2856 } 2857 break; 2858 } 2859 default: 2860 /* 2861 * The drive doesn't seem to support compression, 2862 * so turn off the set compression bit. 2863 */ 2864 params_to_set &= ~SA_PARAM_COMPRESSION; 2865 xpt_print_path(periph->path); 2866 printf("device does not seem to support compression\n"); 2867 2868 /* 2869 * If that was the only thing the user wanted us to set, 2870 * clean up allocated resources and return with 2871 * 'operation not supported'. 2872 */ 2873 if (params_to_set == SA_PARAM_NONE) { 2874 free(mode_buffer, M_TEMP); 2875 xpt_release_ccb(ccb); 2876 return (ENODEV); 2877 } 2878 2879 /* 2880 * That wasn't the only thing the user wanted us to set. 2881 * So, decrease the stated mode buffer length by the 2882 * size of the compression mode page. 2883 */ 2884 mode_buffer_len -= sizeof(sa_comp_t); 2885 } 2886 } 2887 2888 /* It is safe to retry this operation */ 2889 scsi_mode_select(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, 2890 (params_to_set & SA_PARAM_COMPRESSION)? TRUE : FALSE, 2891 FALSE, mode_buffer, mode_buffer_len, SSD_FULL_SIZE, SCSIOP_TIMEOUT); 2892 2893 error = cam_periph_runccb(ccb, saerror, 0, 2894 sense_flags, &softc->device_stats); 2895 QFRLS(ccb); 2896 2897 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 2898 int idx; 2899 char *xyz = mode_buffer; 2900 xpt_print_path(periph->path); 2901 printf("Err%d, Mode Select Data=", error); 2902 for (idx = 0; idx < mode_buffer_len; idx++) 2903 printf(" 0x%02x", xyz[idx] & 0xff); 2904 printf("\n"); 2905 } 2906 2907 2908 if (error) { 2909 /* 2910 * If we can, try without setting density/blocksize. 2911 */ 2912 if (mode_blk) { 2913 if ((params_to_set & 2914 (SA_PARAM_DENSITY|SA_PARAM_BLOCKSIZE)) == 0) { 2915 mode_blk = NULL; 2916 goto retry; 2917 } 2918 } else { 2919 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 2920 cpage = (sa_comp_t *)&mode_blk[1]; 2921 } 2922 2923 /* 2924 * If we were setting the blocksize, and that failed, we 2925 * want to set it to its original value. If we weren't 2926 * setting the blocksize, we don't want to change it. 2927 */ 2928 scsi_ulto3b(current_blocksize, mode_blk->blklen); 2929 2930 /* 2931 * Set density if requested, else preserve old density. 2932 * SCSI_SAME_DENSITY only applies to SCSI-2 or better 2933 * devices, else density we've latched up in our softc. 2934 */ 2935 if (params_to_set & SA_PARAM_DENSITY) { 2936 mode_blk->density = current_density; 2937 } else if (softc->scsi_rev > SCSI_REV_CCS) { 2938 mode_blk->density = SCSI_SAME_DENSITY; 2939 } else { 2940 mode_blk->density = softc->media_density; 2941 } 2942 2943 if (params_to_set & SA_PARAM_COMPRESSION) 2944 bcopy(ccomp, cpage, sizeof (sa_comp_t)); 2945 2946 /* 2947 * The retry count is the only CCB field that might have been 2948 * changed that we care about, so reset it back to 1. 2949 */ 2950 ccb->ccb_h.retry_count = 1; 2951 cam_periph_runccb(ccb, saerror, 0, sense_flags, 2952 &softc->device_stats); 2953 QFRLS(ccb); 2954 } 2955 2956 xpt_release_ccb(ccb); 2957 2958 if (ccomp != NULL) 2959 free(ccomp, M_TEMP); 2960 2961 if (params_to_set & SA_PARAM_COMPRESSION) { 2962 if (error) { 2963 softc->flags &= ~SA_FLAG_COMP_ENABLED; 2964 /* 2965 * Even if we get an error setting compression, 2966 * do not say that we don't support it. We could 2967 * have been wrong, or it may be media specific. 2968 * softc->flags &= ~SA_FLAG_COMP_SUPP; 2969 */ 2970 softc->saved_comp_algorithm = softc->comp_algorithm; 2971 softc->comp_algorithm = 0; 2972 } else { 2973 softc->flags |= SA_FLAG_COMP_ENABLED; 2974 softc->comp_algorithm = calg; 2975 } 2976 } 2977 2978 free(mode_buffer, M_TEMP); 2979 return (error); 2980} 2981 2982static void 2983saprevent(struct cam_periph *periph, int action) 2984{ 2985 struct sa_softc *softc; 2986 union ccb *ccb; 2987 int error, sf; 2988 2989 softc = (struct sa_softc *)periph->softc; 2990 2991 if ((action == PR_ALLOW) && (softc->flags & SA_FLAG_TAPE_LOCKED) == 0) 2992 return; 2993 if ((action == PR_PREVENT) && (softc->flags & SA_FLAG_TAPE_LOCKED) != 0) 2994 return; 2995 2996 /* 2997 * We can be quiet about illegal requests. 2998 */ 2999 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 3000 sf = 0; 3001 } else 3002 sf = SF_QUIET_IR; 3003 3004 ccb = cam_periph_getccb(periph, 1); 3005 3006 /* It is safe to retry this operation */ 3007 scsi_prevent(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, action, 3008 SSD_FULL_SIZE, SCSIOP_TIMEOUT); 3009 3010 error = cam_periph_runccb(ccb, saerror, 0, sf, &softc->device_stats); 3011 QFRLS(ccb); 3012 if (error == 0) { 3013 if (action == PR_ALLOW) 3014 softc->flags &= ~SA_FLAG_TAPE_LOCKED; 3015 else 3016 softc->flags |= SA_FLAG_TAPE_LOCKED; 3017 } 3018 3019 xpt_release_ccb(ccb); 3020} 3021 3022static int 3023sarewind(struct cam_periph *periph) 3024{ 3025 union ccb *ccb; 3026 struct sa_softc *softc; 3027 int error; 3028 3029 softc = (struct sa_softc *)periph->softc; 3030 3031 ccb = cam_periph_getccb(periph, 1); 3032 3033 /* It is safe to retry this operation */ 3034 scsi_rewind(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 3035 SSD_FULL_SIZE, REWIND_TIMEOUT); 3036 3037 softc->dsreg = MTIO_DSREG_REW; 3038 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 3039 softc->dsreg = MTIO_DSREG_REST; 3040 3041 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3042 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 3043 3044 xpt_release_ccb(ccb); 3045 if (error == 0) 3046 softc->fileno = softc->blkno = (daddr_t) 0; 3047 else 3048 softc->fileno = softc->blkno = (daddr_t) -1; 3049 return (error); 3050} 3051 3052static int 3053saspace(struct cam_periph *periph, int count, scsi_space_code code) 3054{ 3055 union ccb *ccb; 3056 struct sa_softc *softc; 3057 int error; 3058 3059 softc = (struct sa_softc *)periph->softc; 3060 3061 ccb = cam_periph_getccb(periph, 1); 3062 3063 /* This cannot be retried */ 3064 3065 scsi_space(&ccb->csio, 0, sadone, MSG_SIMPLE_Q_TAG, code, count, 3066 SSD_FULL_SIZE, SPACE_TIMEOUT); 3067 3068 /* 3069 * Clear residual because we will be using it. 3070 */ 3071 softc->last_ctl_resid = 0; 3072 3073 softc->dsreg = (count < 0)? MTIO_DSREG_REV : MTIO_DSREG_FWD; 3074 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 3075 softc->dsreg = MTIO_DSREG_REST; 3076 3077 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3078 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 3079 3080 xpt_release_ccb(ccb); 3081 3082 /* 3083 * If a spacing operation has failed, we need to invalidate 3084 * this mount. 3085 * 3086 * If the spacing operation was setmarks or to end of recorded data, 3087 * we no longer know our relative position. 3088 * 3089 * If the spacing operations was spacing files in reverse, we 3090 * take account of the residual, but still check against less 3091 * than zero- if we've gone negative, we must have hit BOT. 3092 * 3093 * If the spacing operations was spacing records in reverse and 3094 * we have a residual, we've either hit BOT or hit a filemark. 3095 * In the former case, we know our new record number (0). In 3096 * the latter case, we have absolutely no idea what the real 3097 * record number is- we've stopped between the end of the last 3098 * record in the previous file and the filemark that stopped 3099 * our spacing backwards. 3100 */ 3101 if (error) { 3102 softc->fileno = softc->blkno = (daddr_t) -1; 3103 } else if (code == SS_SETMARKS || code == SS_EOD) { 3104 softc->fileno = softc->blkno = (daddr_t) -1; 3105 } else if (code == SS_FILEMARKS && softc->fileno != (daddr_t) -1) { 3106 softc->fileno += (count - softc->last_ctl_resid); 3107 if (softc->fileno < 0) /* we must of hit BOT */ 3108 softc->fileno = 0; 3109 softc->blkno = 0; 3110 } else if (code == SS_BLOCKS && softc->blkno != (daddr_t) -1) { 3111 softc->blkno += (count - softc->last_ctl_resid); 3112 if (count < 0) { 3113 if (softc->last_ctl_resid || softc->blkno < 0) { 3114 if (softc->fileno == 0) { 3115 softc->blkno = 0; 3116 } else { 3117 softc->blkno = (daddr_t) -1; 3118 } 3119 } 3120 } 3121 } 3122 return (error); 3123} 3124 3125static int 3126sawritefilemarks(struct cam_periph *periph, int nmarks, int setmarks) 3127{ 3128 union ccb *ccb; 3129 struct sa_softc *softc; 3130 int error, nwm = 0; 3131 3132 softc = (struct sa_softc *)periph->softc; 3133 3134 ccb = cam_periph_getccb(periph, 1); 3135 /* 3136 * Clear residual because we will be using it. 3137 */ 3138 softc->last_ctl_resid = 0; 3139 3140 softc->dsreg = MTIO_DSREG_FMK; 3141 /* this *must* not be retried */ 3142 scsi_write_filemarks(&ccb->csio, 0, sadone, MSG_SIMPLE_Q_TAG, 3143 FALSE, setmarks, nmarks, SSD_FULL_SIZE, IO_TIMEOUT); 3144 softc->dsreg = MTIO_DSREG_REST; 3145 3146 3147 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 3148 3149 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3150 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 3151 3152 if (error == 0 && nmarks) { 3153 struct sa_softc *softc = (struct sa_softc *)periph->softc; 3154 nwm = nmarks - softc->last_ctl_resid; 3155 softc->filemarks += nwm; 3156 } 3157 3158 xpt_release_ccb(ccb); 3159 3160 /* 3161 * Update relative positions (if we're doing that). 3162 */ 3163 if (error) { 3164 softc->fileno = softc->blkno = (daddr_t) -1; 3165 } else if (softc->fileno != (daddr_t) -1) { 3166 softc->fileno += nwm; 3167 softc->blkno = 0; 3168 } 3169 return (error); 3170} 3171 3172static int 3173sardpos(struct cam_periph *periph, int hard, u_int32_t *blkptr) 3174{ 3175 struct scsi_tape_position_data loc; 3176 union ccb *ccb; 3177 struct sa_softc *softc = (struct sa_softc *)periph->softc; 3178 int error; 3179 3180 /* 3181 * We try and flush any buffered writes here if we were writing 3182 * and we're trying to get hardware block position. It eats 3183 * up performance substantially, but I'm wary of drive firmware. 3184 * 3185 * I think that *logical* block position is probably okay- 3186 * but hardware block position might have to wait for data 3187 * to hit media to be valid. Caveat Emptor. 3188 */ 3189 3190 if (hard && (softc->flags & SA_FLAG_TAPE_WRITTEN)) { 3191 error = sawritefilemarks(periph, 0, 0); 3192 if (error && error != EACCES) 3193 return (error); 3194 } 3195 3196 ccb = cam_periph_getccb(periph, 1); 3197 scsi_read_position(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, 3198 hard, &loc, SSD_FULL_SIZE, SCSIOP_TIMEOUT); 3199 softc->dsreg = MTIO_DSREG_RBSY; 3200 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 3201 softc->dsreg = MTIO_DSREG_REST; 3202 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3203 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, 0); 3204 3205 if (error == 0) { 3206 if (loc.flags & SA_RPOS_UNCERTAIN) { 3207 error = EINVAL; /* nothing is certain */ 3208 } else { 3209 *blkptr = scsi_4btoul(loc.firstblk); 3210 } 3211 } 3212 3213 xpt_release_ccb(ccb); 3214 return (error); 3215} 3216 3217static int 3218sasetpos(struct cam_periph *periph, int hard, u_int32_t *blkptr) 3219{ 3220 union ccb *ccb; 3221 struct sa_softc *softc; 3222 int error; 3223 3224 /* 3225 * We used to try and flush any buffered writes here. 3226 * Now we push this onto user applications to either 3227 * flush the pending writes themselves (via a zero count 3228 * WRITE FILEMARKS command) or they can trust their tape 3229 * drive to do this correctly for them. 3230 */ 3231 3232 softc = (struct sa_softc *)periph->softc; 3233 ccb = cam_periph_getccb(periph, 1); 3234 3235 3236 scsi_set_position(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, 3237 hard, *blkptr, SSD_FULL_SIZE, SPACE_TIMEOUT); 3238 3239 3240 softc->dsreg = MTIO_DSREG_POS; 3241 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 3242 softc->dsreg = MTIO_DSREG_REST; 3243 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3244 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, 0); 3245 xpt_release_ccb(ccb); 3246 /* 3247 * Note relative file && block number position as now unknown. 3248 */ 3249 softc->fileno = softc->blkno = (daddr_t) -1; 3250 return (error); 3251} 3252 3253static int 3254saretension(struct cam_periph *periph) 3255{ 3256 union ccb *ccb; 3257 struct sa_softc *softc; 3258 int error; 3259 3260 softc = (struct sa_softc *)periph->softc; 3261 3262 ccb = cam_periph_getccb(periph, 1); 3263 3264 /* It is safe to retry this operation */ 3265 scsi_load_unload(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 3266 FALSE, TRUE, TRUE, SSD_FULL_SIZE, ERASE_TIMEOUT); 3267 3268 softc->dsreg = MTIO_DSREG_TEN; 3269 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 3270 softc->dsreg = MTIO_DSREG_REST; 3271 3272 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3273 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 3274 xpt_release_ccb(ccb); 3275 if (error == 0) 3276 softc->fileno = softc->blkno = (daddr_t) 0; 3277 else 3278 softc->fileno = softc->blkno = (daddr_t) -1; 3279 return (error); 3280} 3281 3282static int 3283sareservereleaseunit(struct cam_periph *periph, int reserve) 3284{ 3285 union ccb *ccb; 3286 struct sa_softc *softc; 3287 int error; 3288 3289 softc = (struct sa_softc *)periph->softc; 3290 ccb = cam_periph_getccb(periph, 1); 3291 3292 /* It is safe to retry this operation */ 3293 scsi_reserve_release_unit(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, 3294 FALSE, 0, SSD_FULL_SIZE, SCSIOP_TIMEOUT, reserve); 3295 softc->dsreg = MTIO_DSREG_RBSY; 3296 error = cam_periph_runccb(ccb, saerror, 0, 3297 SF_RETRY_UA | SF_NO_PRINT, &softc->device_stats); 3298 softc->dsreg = MTIO_DSREG_REST; 3299 QFRLS(ccb); 3300 xpt_release_ccb(ccb); 3301 3302 /* 3303 * If the error was Illegal Request, then the device doesn't support 3304 * RESERVE/RELEASE. This is not an error. 3305 */ 3306 if (error == EINVAL) { 3307 error = 0; 3308 } 3309 3310 return (error); 3311} 3312 3313static int 3314saloadunload(struct cam_periph *periph, int load) 3315{ 3316 union ccb *ccb; 3317 struct sa_softc *softc; 3318 int error; 3319 3320 softc = (struct sa_softc *)periph->softc; 3321 3322 ccb = cam_periph_getccb(periph, 1); 3323 3324 /* It is safe to retry this operation */ 3325 scsi_load_unload(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 3326 FALSE, FALSE, load, SSD_FULL_SIZE, REWIND_TIMEOUT); 3327 3328 softc->dsreg = (load)? MTIO_DSREG_LD : MTIO_DSREG_UNL; 3329 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 3330 softc->dsreg = MTIO_DSREG_REST; 3331 QFRLS(ccb); 3332 xpt_release_ccb(ccb); 3333 3334 if (error || load == 0) 3335 softc->fileno = softc->blkno = (daddr_t) -1; 3336 else if (error == 0) 3337 softc->fileno = softc->blkno = (daddr_t) 0; 3338 return (error); 3339} 3340 3341static int 3342saerase(struct cam_periph *periph, int longerase) 3343{ 3344 3345 union ccb *ccb; 3346 struct sa_softc *softc; 3347 int error; 3348 3349 softc = (struct sa_softc *)periph->softc; 3350 3351 ccb = cam_periph_getccb(periph, 1); 3352 3353 scsi_erase(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, FALSE, longerase, 3354 SSD_FULL_SIZE, ERASE_TIMEOUT); 3355 3356 softc->dsreg = MTIO_DSREG_ZER; 3357 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 3358 softc->dsreg = MTIO_DSREG_REST; 3359 3360 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3361 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 3362 xpt_release_ccb(ccb); 3363 return (error); 3364} 3365 3366#endif /* _KERNEL */ 3367 3368/* 3369 * Read tape block limits command. 3370 */ 3371void 3372scsi_read_block_limits(struct ccb_scsiio *csio, u_int32_t retries, 3373 void (*cbfcnp)(struct cam_periph *, union ccb *), 3374 u_int8_t tag_action, 3375 struct scsi_read_block_limits_data *rlimit_buf, 3376 u_int8_t sense_len, u_int32_t timeout) 3377{ 3378 struct scsi_read_block_limits *scsi_cmd; 3379 3380 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_IN, tag_action, 3381 (u_int8_t *)rlimit_buf, sizeof(*rlimit_buf), sense_len, 3382 sizeof(*scsi_cmd), timeout); 3383 3384 scsi_cmd = (struct scsi_read_block_limits *)&csio->cdb_io.cdb_bytes; 3385 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3386 scsi_cmd->opcode = READ_BLOCK_LIMITS; 3387} 3388 3389void 3390scsi_sa_read_write(struct ccb_scsiio *csio, u_int32_t retries, 3391 void (*cbfcnp)(struct cam_periph *, union ccb *), 3392 u_int8_t tag_action, int readop, int sli, 3393 int fixed, u_int32_t length, u_int8_t *data_ptr, 3394 u_int32_t dxfer_len, u_int8_t sense_len, u_int32_t timeout) 3395{ 3396 struct scsi_sa_rw *scsi_cmd; 3397 3398 scsi_cmd = (struct scsi_sa_rw *)&csio->cdb_io.cdb_bytes; 3399 scsi_cmd->opcode = readop ? SA_READ : SA_WRITE; 3400 scsi_cmd->sli_fixed = 0; 3401 if (sli && readop) 3402 scsi_cmd->sli_fixed |= SAR_SLI; 3403 if (fixed) 3404 scsi_cmd->sli_fixed |= SARW_FIXED; 3405 scsi_ulto3b(length, scsi_cmd->length); 3406 scsi_cmd->control = 0; 3407 3408 cam_fill_csio(csio, retries, cbfcnp, readop ? CAM_DIR_IN : CAM_DIR_OUT, 3409 tag_action, data_ptr, dxfer_len, sense_len, 3410 sizeof(*scsi_cmd), timeout); 3411} 3412 3413void 3414scsi_load_unload(struct ccb_scsiio *csio, u_int32_t retries, 3415 void (*cbfcnp)(struct cam_periph *, union ccb *), 3416 u_int8_t tag_action, int immediate, int eot, 3417 int reten, int load, u_int8_t sense_len, 3418 u_int32_t timeout) 3419{ 3420 struct scsi_load_unload *scsi_cmd; 3421 3422 scsi_cmd = (struct scsi_load_unload *)&csio->cdb_io.cdb_bytes; 3423 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3424 scsi_cmd->opcode = LOAD_UNLOAD; 3425 if (immediate) 3426 scsi_cmd->immediate = SLU_IMMED; 3427 if (eot) 3428 scsi_cmd->eot_reten_load |= SLU_EOT; 3429 if (reten) 3430 scsi_cmd->eot_reten_load |= SLU_RETEN; 3431 if (load) 3432 scsi_cmd->eot_reten_load |= SLU_LOAD; 3433 3434 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, 3435 NULL, 0, sense_len, sizeof(*scsi_cmd), timeout); 3436} 3437 3438void 3439scsi_rewind(struct ccb_scsiio *csio, u_int32_t retries, 3440 void (*cbfcnp)(struct cam_periph *, union ccb *), 3441 u_int8_t tag_action, int immediate, u_int8_t sense_len, 3442 u_int32_t timeout) 3443{ 3444 struct scsi_rewind *scsi_cmd; 3445 3446 scsi_cmd = (struct scsi_rewind *)&csio->cdb_io.cdb_bytes; 3447 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3448 scsi_cmd->opcode = REWIND; 3449 if (immediate) 3450 scsi_cmd->immediate = SREW_IMMED; 3451 3452 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3453 0, sense_len, sizeof(*scsi_cmd), timeout); 3454} 3455 3456void 3457scsi_space(struct ccb_scsiio *csio, u_int32_t retries, 3458 void (*cbfcnp)(struct cam_periph *, union ccb *), 3459 u_int8_t tag_action, scsi_space_code code, 3460 u_int32_t count, u_int8_t sense_len, u_int32_t timeout) 3461{ 3462 struct scsi_space *scsi_cmd; 3463 3464 scsi_cmd = (struct scsi_space *)&csio->cdb_io.cdb_bytes; 3465 scsi_cmd->opcode = SPACE; 3466 scsi_cmd->code = code; 3467 scsi_ulto3b(count, scsi_cmd->count); 3468 scsi_cmd->control = 0; 3469 3470 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3471 0, sense_len, sizeof(*scsi_cmd), timeout); 3472} 3473 3474void 3475scsi_write_filemarks(struct ccb_scsiio *csio, u_int32_t retries, 3476 void (*cbfcnp)(struct cam_periph *, union ccb *), 3477 u_int8_t tag_action, int immediate, int setmark, 3478 u_int32_t num_marks, u_int8_t sense_len, 3479 u_int32_t timeout) 3480{ 3481 struct scsi_write_filemarks *scsi_cmd; 3482 3483 scsi_cmd = (struct scsi_write_filemarks *)&csio->cdb_io.cdb_bytes; 3484 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3485 scsi_cmd->opcode = WRITE_FILEMARKS; 3486 if (immediate) 3487 scsi_cmd->byte2 |= SWFMRK_IMMED; 3488 if (setmark) 3489 scsi_cmd->byte2 |= SWFMRK_WSMK; 3490 3491 scsi_ulto3b(num_marks, scsi_cmd->num_marks); 3492 3493 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3494 0, sense_len, sizeof(*scsi_cmd), timeout); 3495} 3496 3497/* 3498 * The reserve and release unit commands differ only by their opcodes. 3499 */ 3500void 3501scsi_reserve_release_unit(struct ccb_scsiio *csio, u_int32_t retries, 3502 void (*cbfcnp)(struct cam_periph *, union ccb *), 3503 u_int8_t tag_action, int third_party, 3504 int third_party_id, u_int8_t sense_len, 3505 u_int32_t timeout, int reserve) 3506{ 3507 struct scsi_reserve_release_unit *scsi_cmd; 3508 3509 scsi_cmd = (struct scsi_reserve_release_unit *)&csio->cdb_io.cdb_bytes; 3510 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3511 3512 if (reserve) 3513 scsi_cmd->opcode = RESERVE_UNIT; 3514 else 3515 scsi_cmd->opcode = RELEASE_UNIT; 3516 3517 if (third_party) { 3518 scsi_cmd->lun_thirdparty |= SRRU_3RD_PARTY; 3519 scsi_cmd->lun_thirdparty |= 3520 ((third_party_id << SRRU_3RD_SHAMT) & SRRU_3RD_MASK); 3521 } 3522 3523 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3524 0, sense_len, sizeof(*scsi_cmd), timeout); 3525} 3526 3527void 3528scsi_erase(struct ccb_scsiio *csio, u_int32_t retries, 3529 void (*cbfcnp)(struct cam_periph *, union ccb *), 3530 u_int8_t tag_action, int immediate, int long_erase, 3531 u_int8_t sense_len, u_int32_t timeout) 3532{ 3533 struct scsi_erase *scsi_cmd; 3534 3535 scsi_cmd = (struct scsi_erase *)&csio->cdb_io.cdb_bytes; 3536 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3537 3538 scsi_cmd->opcode = ERASE; 3539 3540 if (immediate) 3541 scsi_cmd->lun_imm_long |= SE_IMMED; 3542 3543 if (long_erase) 3544 scsi_cmd->lun_imm_long |= SE_LONG; 3545 3546 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3547 0, sense_len, sizeof(*scsi_cmd), timeout); 3548} 3549 3550/* 3551 * Read Tape Position command. 3552 */ 3553void 3554scsi_read_position(struct ccb_scsiio *csio, u_int32_t retries, 3555 void (*cbfcnp)(struct cam_periph *, union ccb *), 3556 u_int8_t tag_action, int hardsoft, 3557 struct scsi_tape_position_data *sbp, 3558 u_int8_t sense_len, u_int32_t timeout) 3559{ 3560 struct scsi_tape_read_position *scmd; 3561 3562 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_IN, tag_action, 3563 (u_int8_t *)sbp, sizeof (*sbp), sense_len, sizeof(*scmd), timeout); 3564 scmd = (struct scsi_tape_read_position *)&csio->cdb_io.cdb_bytes; 3565 bzero(scmd, sizeof(*scmd)); 3566 scmd->opcode = READ_POSITION; 3567 scmd->byte1 = hardsoft; 3568} 3569 3570/* 3571 * Set Tape Position command. 3572 */ 3573void 3574scsi_set_position(struct ccb_scsiio *csio, u_int32_t retries, 3575 void (*cbfcnp)(struct cam_periph *, union ccb *), 3576 u_int8_t tag_action, int hardsoft, u_int32_t blkno, 3577 u_int8_t sense_len, u_int32_t timeout) 3578{ 3579 struct scsi_tape_locate *scmd; 3580 3581 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, 3582 (u_int8_t *)NULL, 0, sense_len, sizeof(*scmd), timeout); 3583 scmd = (struct scsi_tape_locate *)&csio->cdb_io.cdb_bytes; 3584 bzero(scmd, sizeof(*scmd)); 3585 scmd->opcode = LOCATE; 3586 if (hardsoft) 3587 scmd->byte1 |= SA_SPOS_BT; 3588 scsi_ulto4b(blkno, scmd->blkaddr); 3589} 3590