1/*- 2 * Implementation of SCSI Sequential Access Peripheral driver for CAM. 3 * 4 * Copyright (c) 1999, 2000 Matthew Jacob 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions, and the following disclaimer, 12 * without modification, immediately at the beginning of the file. 13 * 2. The name of the author may not be used to endorse or promote products 14 * derived from this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR 20 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29#include <sys/cdefs.h> 30__FBSDID("$FreeBSD$"); 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/time.h> 40#include <sys/bio.h> 41#include <sys/limits.h> 42#include <sys/malloc.h> 43#include <sys/mtio.h> 44#ifdef _KERNEL 45#include <sys/conf.h> 46#endif 47#include <sys/fcntl.h> 48#include <sys/devicestat.h> 49 50#ifndef _KERNEL 51#include <stdio.h> 52#include <string.h> 53#endif 54 55#include <cam/cam.h> 56#include <cam/cam_ccb.h> 57#include <cam/cam_periph.h> 58#include <cam/cam_xpt_periph.h> 59#include <cam/cam_debug.h> 60 61#include <cam/scsi/scsi_all.h> 62#include <cam/scsi/scsi_message.h> 63#include <cam/scsi/scsi_sa.h> 64 65#ifdef _KERNEL 66 67#include <opt_sa.h> 68 69#ifndef SA_IO_TIMEOUT 70#define SA_IO_TIMEOUT 4 71#endif 72#ifndef SA_SPACE_TIMEOUT 73#define SA_SPACE_TIMEOUT 1 * 60 74#endif 75#ifndef SA_REWIND_TIMEOUT 76#define SA_REWIND_TIMEOUT 2 * 60 77#endif 78#ifndef SA_ERASE_TIMEOUT 79#define SA_ERASE_TIMEOUT 4 * 60 80#endif 81 82#define SCSIOP_TIMEOUT (60 * 1000) /* not an option */ 83 84#define IO_TIMEOUT (SA_IO_TIMEOUT * 60 * 1000) 85#define REWIND_TIMEOUT (SA_REWIND_TIMEOUT * 60 * 1000) 86#define ERASE_TIMEOUT (SA_ERASE_TIMEOUT * 60 * 1000) 87#define SPACE_TIMEOUT (SA_SPACE_TIMEOUT * 60 * 1000) 88 89/* 90 * Additional options that can be set for config: SA_1FM_AT_EOT 91 */ 92 93#ifndef UNUSED_PARAMETER 94#define UNUSED_PARAMETER(x) x = x 95#endif 96 97#define QFRLS(ccb) \ 98 if (((ccb)->ccb_h.status & CAM_DEV_QFRZN) != 0) \ 99 cam_release_devq((ccb)->ccb_h.path, 0, 0, 0, FALSE) 100 101/* 102 * Driver states 103 */ 104 105static MALLOC_DEFINE(M_SCSISA, "SCSI sa", "SCSI sequential access buffers"); 106 107typedef enum { 108 SA_STATE_NORMAL, SA_STATE_ABNORMAL 109} sa_state; 110 111#define ccb_pflags ppriv_field0 112#define ccb_bp ppriv_ptr1 113 114#define SA_CCB_BUFFER_IO 0x0 115#define SA_CCB_WAITING 0x1 116#define SA_CCB_TYPEMASK 0x1 117#define SA_POSITION_UPDATED 0x2 118 119#define Set_CCB_Type(x, type) \ 120 x->ccb_h.ccb_pflags &= ~SA_CCB_TYPEMASK; \ 121 x->ccb_h.ccb_pflags |= type 122 123#define CCB_Type(x) (x->ccb_h.ccb_pflags & SA_CCB_TYPEMASK) 124 125 126 127typedef enum { 128 SA_FLAG_OPEN = 0x0001, 129 SA_FLAG_FIXED = 0x0002, 130 SA_FLAG_TAPE_LOCKED = 0x0004, 131 SA_FLAG_TAPE_MOUNTED = 0x0008, 132 SA_FLAG_TAPE_WP = 0x0010, 133 SA_FLAG_TAPE_WRITTEN = 0x0020, 134 SA_FLAG_EOM_PENDING = 0x0040, 135 SA_FLAG_EIO_PENDING = 0x0080, 136 SA_FLAG_EOF_PENDING = 0x0100, 137 SA_FLAG_ERR_PENDING = (SA_FLAG_EOM_PENDING|SA_FLAG_EIO_PENDING| 138 SA_FLAG_EOF_PENDING), 139 SA_FLAG_INVALID = 0x0200, 140 SA_FLAG_COMP_ENABLED = 0x0400, 141 SA_FLAG_COMP_SUPP = 0x0800, 142 SA_FLAG_COMP_UNSUPP = 0x1000, 143 SA_FLAG_TAPE_FROZEN = 0x2000 144} sa_flags; 145 146typedef enum { 147 SA_MODE_REWIND = 0x00, 148 SA_MODE_NOREWIND = 0x01, 149 SA_MODE_OFFLINE = 0x02 150} sa_mode; 151 152typedef enum { 153 SA_PARAM_NONE = 0x00, 154 SA_PARAM_BLOCKSIZE = 0x01, 155 SA_PARAM_DENSITY = 0x02, 156 SA_PARAM_COMPRESSION = 0x04, 157 SA_PARAM_BUFF_MODE = 0x08, 158 SA_PARAM_NUMBLOCKS = 0x10, 159 SA_PARAM_WP = 0x20, 160 SA_PARAM_SPEED = 0x40, 161 SA_PARAM_ALL = 0x7f 162} sa_params; 163 164typedef enum { 165 SA_QUIRK_NONE = 0x00, 166 SA_QUIRK_NOCOMP = 0x01, /* Can't deal with compression at all */ 167 SA_QUIRK_FIXED = 0x02, /* Force fixed mode */ 168 SA_QUIRK_VARIABLE = 0x04, /* Force variable mode */ 169 SA_QUIRK_2FM = 0x08, /* Needs Two File Marks at EOD */ 170 SA_QUIRK_1FM = 0x10, /* No more than 1 File Mark at EOD */ 171 SA_QUIRK_NODREAD = 0x20, /* Don't try and dummy read density */ 172 SA_QUIRK_NO_MODESEL = 0x40, /* Don't do mode select at all */ 173 SA_QUIRK_NO_CPAGE = 0x80 /* Don't use DEVICE COMPRESSION page */ 174} sa_quirks; 175 176#define SA_QUIRK_BIT_STRING \ 177 "\020" \ 178 "\001NOCOMP" \ 179 "\002FIXED" \ 180 "\003VARIABLE" \ 181 "\0042FM" \ 182 "\0051FM" \ 183 "\006NODREAD" \ 184 "\007NO_MODESEL" \ 185 "\010NO_CPAGE" 186 187#define SAMODE(z) (dev2unit(z) & 0x3) 188#define SADENSITY(z) ((dev2unit(z) >> 2) & 0x3) 189#define SA_IS_CTRL(z) (dev2unit(z) & (1 << 4)) 190 191#define SA_NOT_CTLDEV 0 192#define SA_CTLDEV 1 193 194#define SA_ATYPE_R 0 195#define SA_ATYPE_NR 1 196#define SA_ATYPE_ER 2 197 198#define SAMINOR(ctl, mode, access) \ 199 ((ctl << 4) | (mode << 2) | (access & 0x3)) 200 201#define SA_NUM_MODES 4 202struct sa_devs { 203 struct cdev *ctl_dev; 204 struct sa_mode_devs { 205 struct cdev *r_dev; 206 struct cdev *nr_dev; 207 struct cdev *er_dev; 208 } mode_devs[SA_NUM_MODES]; 209}; 210 211struct sa_softc { 212 sa_state state; 213 sa_flags flags; 214 sa_quirks quirks; 215 u_int si_flags; 216 struct bio_queue_head bio_queue; 217 int queue_count; 218 struct devstat *device_stats; 219 struct sa_devs devs; 220 int blk_gran; 221 int blk_mask; 222 int blk_shift; 223 u_int32_t max_blk; 224 u_int32_t min_blk; 225 u_int32_t maxio; 226 u_int32_t comp_algorithm; 227 u_int32_t saved_comp_algorithm; 228 u_int32_t media_blksize; 229 u_int32_t last_media_blksize; 230 u_int32_t media_numblks; 231 u_int8_t media_density; 232 u_int8_t speed; 233 u_int8_t scsi_rev; 234 u_int8_t dsreg; /* mtio mt_dsreg, redux */ 235 int buffer_mode; 236 int filemarks; 237 union ccb saved_ccb; 238 int last_resid_was_io; 239 240 /* 241 * Relative to BOT Location. 242 */ 243 daddr_t fileno; 244 daddr_t blkno; 245 246 /* 247 * Latched Error Info 248 */ 249 struct { 250 struct scsi_sense_data _last_io_sense; 251 u_int64_t _last_io_resid; 252 u_int8_t _last_io_cdb[CAM_MAX_CDBLEN]; 253 struct scsi_sense_data _last_ctl_sense; 254 u_int64_t _last_ctl_resid; 255 u_int8_t _last_ctl_cdb[CAM_MAX_CDBLEN]; 256#define last_io_sense errinfo._last_io_sense 257#define last_io_resid errinfo._last_io_resid 258#define last_io_cdb errinfo._last_io_cdb 259#define last_ctl_sense errinfo._last_ctl_sense 260#define last_ctl_resid errinfo._last_ctl_resid 261#define last_ctl_cdb errinfo._last_ctl_cdb 262 } errinfo; 263 /* 264 * Misc other flags/state 265 */ 266 u_int32_t 267 : 29, 268 open_rdonly : 1, /* open read-only */ 269 open_pending_mount : 1, /* open pending mount */ 270 ctrl_mode : 1; /* control device open */ 271}; 272 273struct sa_quirk_entry { 274 struct scsi_inquiry_pattern inq_pat; /* matching pattern */ 275 sa_quirks quirks; /* specific quirk type */ 276 u_int32_t prefblk; /* preferred blocksize when in fixed mode */ 277}; 278 279static struct sa_quirk_entry sa_quirk_table[] = 280{ 281 { 282 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "OnStream", 283 "ADR*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_NODREAD | 284 SA_QUIRK_1FM|SA_QUIRK_NO_MODESEL, 32768 285 }, 286 { 287 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 288 "Python 06408*", "*"}, SA_QUIRK_NODREAD, 0 289 }, 290 { 291 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 292 "Python 25601*", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_NODREAD, 0 293 }, 294 { 295 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 296 "Python*", "*"}, SA_QUIRK_NODREAD, 0 297 }, 298 { 299 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 300 "VIPER 150*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 301 }, 302 { 303 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 304 "VIPER 2525 25462", "-011"}, 305 SA_QUIRK_NOCOMP|SA_QUIRK_1FM|SA_QUIRK_NODREAD, 0 306 }, 307 { 308 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 309 "VIPER 2525*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 1024 310 }, 311#if 0 312 { 313 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 314 "C15*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_NO_CPAGE, 0, 315 }, 316#endif 317 { 318 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 319 "C56*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 320 }, 321 { 322 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 323 "T20*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 324 }, 325 { 326 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 327 "T4000*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 328 }, 329 { 330 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 331 "HP-88780*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 332 }, 333 { 334 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "KENNEDY", 335 "*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 336 }, 337 { 338 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "M4 DATA", 339 "123107 SCSI*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 340 }, 341 { /* jreynold@primenet.com */ 342 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "Seagate", 343 "STT8000N*", "*"}, SA_QUIRK_1FM, 0 344 }, 345 { /* mike@sentex.net */ 346 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "Seagate", 347 "STT20000*", "*"}, SA_QUIRK_1FM, 0 348 }, 349 { 350 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "SEAGATE", 351 "DAT 06241-XXX", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 352 }, 353 { 354 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 355 " TDC 3600", "U07:"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 356 }, 357 { 358 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 359 " TDC 3800", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 360 }, 361 { 362 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 363 " TDC 4100", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 364 }, 365 { 366 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 367 " TDC 4200", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 368 }, 369 { 370 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 371 " SLR*", "*"}, SA_QUIRK_1FM, 0 372 }, 373 { 374 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "WANGTEK", 375 "5525ES*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 376 }, 377 { 378 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "WANGTEK", 379 "51000*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 1024 380 } 381}; 382 383static d_open_t saopen; 384static d_close_t saclose; 385static d_strategy_t sastrategy; 386static d_ioctl_t saioctl; 387static periph_init_t sainit; 388static periph_ctor_t saregister; 389static periph_oninv_t saoninvalidate; 390static periph_dtor_t sacleanup; 391static periph_start_t sastart; 392static void saasync(void *callback_arg, u_int32_t code, 393 struct cam_path *path, void *arg); 394static void sadone(struct cam_periph *periph, 395 union ccb *start_ccb); 396static int saerror(union ccb *ccb, u_int32_t cam_flags, 397 u_int32_t sense_flags); 398static int samarkswanted(struct cam_periph *); 399static int sacheckeod(struct cam_periph *periph); 400static int sagetparams(struct cam_periph *periph, 401 sa_params params_to_get, 402 u_int32_t *blocksize, u_int8_t *density, 403 u_int32_t *numblocks, int *buff_mode, 404 u_int8_t *write_protect, u_int8_t *speed, 405 int *comp_supported, int *comp_enabled, 406 u_int32_t *comp_algorithm, 407 sa_comp_t *comp_page); 408static int sasetparams(struct cam_periph *periph, 409 sa_params params_to_set, 410 u_int32_t blocksize, u_int8_t density, 411 u_int32_t comp_algorithm, 412 u_int32_t sense_flags); 413static void saprevent(struct cam_periph *periph, int action); 414static int sarewind(struct cam_periph *periph); 415static int saspace(struct cam_periph *periph, int count, 416 scsi_space_code code); 417static int samount(struct cam_periph *, int, struct cdev *); 418static int saretension(struct cam_periph *periph); 419static int sareservereleaseunit(struct cam_periph *periph, 420 int reserve); 421static int saloadunload(struct cam_periph *periph, int load); 422static int saerase(struct cam_periph *periph, int longerase); 423static int sawritefilemarks(struct cam_periph *periph, 424 int nmarks, int setmarks); 425static int sardpos(struct cam_periph *periph, int, u_int32_t *); 426static int sasetpos(struct cam_periph *periph, int, u_int32_t *); 427 428 429static struct periph_driver sadriver = 430{ 431 sainit, "sa", 432 TAILQ_HEAD_INITIALIZER(sadriver.units), /* generation */ 0 433}; 434 435PERIPHDRIVER_DECLARE(sa, sadriver); 436 437/* For 2.2-stable support */ 438#ifndef D_TAPE 439#define D_TAPE 0 440#endif 441 442 443static struct cdevsw sa_cdevsw = { 444 .d_version = D_VERSION, 445 .d_open = saopen, 446 .d_close = saclose, 447 .d_read = physread, 448 .d_write = physwrite, 449 .d_ioctl = saioctl, 450 .d_strategy = sastrategy, 451 .d_name = "sa", 452 .d_flags = D_TAPE, 453}; 454 455static int 456saopen(struct cdev *dev, int flags, int fmt, struct thread *td) 457{ 458 struct cam_periph *periph; 459 struct sa_softc *softc; 460 int error; 461 462 periph = (struct cam_periph *)dev->si_drv1; 463 if (cam_periph_acquire(periph) != CAM_REQ_CMP) { 464 return (ENXIO); 465 } 466 467 cam_periph_lock(periph); 468 469 softc = (struct sa_softc *)periph->softc; 470 471 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE|CAM_DEBUG_INFO, 472 ("saopen(%s): softc=0x%x\n", devtoname(dev), softc->flags)); 473 474 if (SA_IS_CTRL(dev)) { 475 softc->ctrl_mode = 1; 476 cam_periph_unlock(periph); 477 return (0); 478 } 479 480 if ((error = cam_periph_hold(periph, PRIBIO|PCATCH)) != 0) { 481 cam_periph_unlock(periph); 482 cam_periph_release(periph); 483 return (error); 484 } 485 486 if (softc->flags & SA_FLAG_OPEN) { 487 error = EBUSY; 488 } else if (softc->flags & SA_FLAG_INVALID) { 489 error = ENXIO; 490 } else { 491 /* 492 * Preserve whether this is a read_only open. 493 */ 494 softc->open_rdonly = (flags & O_RDWR) == O_RDONLY; 495 496 /* 497 * The function samount ensures media is loaded and ready. 498 * It also does a device RESERVE if the tape isn't yet mounted. 499 * 500 * If the mount fails and this was a non-blocking open, 501 * make this a 'open_pending_mount' action. 502 */ 503 error = samount(periph, flags, dev); 504 if (error && (flags & O_NONBLOCK)) { 505 softc->flags |= SA_FLAG_OPEN; 506 softc->open_pending_mount = 1; 507 cam_periph_unhold(periph); 508 cam_periph_unlock(periph); 509 return (0); 510 } 511 } 512 513 if (error) { 514 cam_periph_unhold(periph); 515 cam_periph_unlock(periph); 516 cam_periph_release(periph); 517 return (error); 518 } 519 520 saprevent(periph, PR_PREVENT); 521 softc->flags |= SA_FLAG_OPEN; 522 523 cam_periph_unhold(periph); 524 cam_periph_unlock(periph); 525 return (error); 526} 527 528static int 529saclose(struct cdev *dev, int flag, int fmt, struct thread *td) 530{ 531 struct cam_periph *periph; 532 struct sa_softc *softc; 533 int mode, error, writing, tmp; 534 int closedbits = SA_FLAG_OPEN; 535 536 mode = SAMODE(dev); 537 periph = (struct cam_periph *)dev->si_drv1; 538 if (periph == NULL) 539 return (ENXIO); 540 541 cam_periph_lock(periph); 542 543 softc = (struct sa_softc *)periph->softc; 544 545 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE|CAM_DEBUG_INFO, 546 ("saclose(%s): softc=0x%x\n", devtoname(dev), softc->flags)); 547 548 549 softc->open_rdonly = 0; 550 if (SA_IS_CTRL(dev)) { 551 softc->ctrl_mode = 0; 552 cam_periph_unlock(periph); 553 cam_periph_release(periph); 554 return (0); 555 } 556 557 if (softc->open_pending_mount) { 558 softc->flags &= ~SA_FLAG_OPEN; 559 softc->open_pending_mount = 0; 560 cam_periph_unlock(periph); 561 cam_periph_release(periph); 562 return (0); 563 } 564 565 if ((error = cam_periph_hold(periph, PRIBIO)) != 0) { 566 cam_periph_unlock(periph); 567 return (error); 568 } 569 570 /* 571 * Were we writing the tape? 572 */ 573 writing = (softc->flags & SA_FLAG_TAPE_WRITTEN) != 0; 574 575 /* 576 * See whether or not we need to write filemarks. If this 577 * fails, we probably have to assume we've lost tape 578 * position. 579 */ 580 error = sacheckeod(periph); 581 if (error) { 582 xpt_print(periph->path, 583 "failed to write terminating filemark(s)\n"); 584 softc->flags |= SA_FLAG_TAPE_FROZEN; 585 } 586 587 /* 588 * Whatever we end up doing, allow users to eject tapes from here on. 589 */ 590 saprevent(periph, PR_ALLOW); 591 592 /* 593 * Decide how to end... 594 */ 595 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) { 596 closedbits |= SA_FLAG_TAPE_FROZEN; 597 } else switch (mode) { 598 case SA_MODE_OFFLINE: 599 /* 600 * An 'offline' close is an unconditional release of 601 * frozen && mount conditions, irrespective of whether 602 * these operations succeeded. The reason for this is 603 * to allow at least some kind of programmatic way 604 * around our state getting all fouled up. If somebody 605 * issues an 'offline' command, that will be allowed 606 * to clear state. 607 */ 608 (void) sarewind(periph); 609 (void) saloadunload(periph, FALSE); 610 closedbits |= SA_FLAG_TAPE_MOUNTED|SA_FLAG_TAPE_FROZEN; 611 break; 612 case SA_MODE_REWIND: 613 /* 614 * If the rewind fails, return an error- if anyone cares, 615 * but not overwriting any previous error. 616 * 617 * We don't clear the notion of mounted here, but we do 618 * clear the notion of frozen if we successfully rewound. 619 */ 620 tmp = sarewind(periph); 621 if (tmp) { 622 if (error != 0) 623 error = tmp; 624 } else { 625 closedbits |= SA_FLAG_TAPE_FROZEN; 626 } 627 break; 628 case SA_MODE_NOREWIND: 629 /* 630 * If we're not rewinding/unloading the tape, find out 631 * whether we need to back up over one of two filemarks 632 * we wrote (if we wrote two filemarks) so that appends 633 * from this point on will be sane. 634 */ 635 if (error == 0 && writing && (softc->quirks & SA_QUIRK_2FM)) { 636 tmp = saspace(periph, -1, SS_FILEMARKS); 637 if (tmp) { 638 xpt_print(periph->path, "unable to backspace " 639 "over one of double filemarks at end of " 640 "tape\n"); 641 xpt_print(periph->path, "it is possible that " 642 "this device needs a SA_QUIRK_1FM quirk set" 643 "for it\n"); 644 softc->flags |= SA_FLAG_TAPE_FROZEN; 645 } 646 } 647 break; 648 default: 649 xpt_print(periph->path, "unknown mode 0x%x in saclose\n", mode); 650 /* NOTREACHED */ 651 break; 652 } 653 654 /* 655 * We wish to note here that there are no more filemarks to be written. 656 */ 657 softc->filemarks = 0; 658 softc->flags &= ~SA_FLAG_TAPE_WRITTEN; 659 660 /* 661 * And we are no longer open for business. 662 */ 663 softc->flags &= ~closedbits; 664 665 /* 666 * Inform users if tape state if frozen.... 667 */ 668 if (softc->flags & SA_FLAG_TAPE_FROZEN) { 669 xpt_print(periph->path, "tape is now frozen- use an OFFLINE, " 670 "REWIND or MTEOM command to clear this state.\n"); 671 } 672 673 /* release the device if it is no longer mounted */ 674 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) 675 sareservereleaseunit(periph, FALSE); 676 677 cam_periph_unhold(periph); 678 cam_periph_unlock(periph); 679 cam_periph_release(periph); 680 681 return (error); 682} 683 684/* 685 * Actually translate the requested transfer into one the physical driver 686 * can understand. The transfer is described by a buf and will include 687 * only one physical transfer. 688 */ 689static void 690sastrategy(struct bio *bp) 691{ 692 struct cam_periph *periph; 693 struct sa_softc *softc; 694 695 bp->bio_resid = bp->bio_bcount; 696 if (SA_IS_CTRL(bp->bio_dev)) { 697 biofinish(bp, NULL, EINVAL); 698 return; 699 } 700 periph = (struct cam_periph *)bp->bio_dev->si_drv1; 701 if (periph == NULL) { 702 biofinish(bp, NULL, ENXIO); 703 return; 704 } 705 cam_periph_lock(periph); 706 707 softc = (struct sa_softc *)periph->softc; 708 709 if (softc->flags & SA_FLAG_INVALID) { 710 cam_periph_unlock(periph); 711 biofinish(bp, NULL, ENXIO); 712 return; 713 } 714 715 if (softc->flags & SA_FLAG_TAPE_FROZEN) { 716 cam_periph_unlock(periph); 717 biofinish(bp, NULL, EPERM); 718 return; 719 } 720 721 /* 722 * This should actually never occur as the write(2) 723 * system call traps attempts to write to a read-only 724 * file descriptor. 725 */ 726 if (bp->bio_cmd == BIO_WRITE && softc->open_rdonly) { 727 cam_periph_unlock(periph); 728 biofinish(bp, NULL, EBADF); 729 return; 730 } 731 732 if (softc->open_pending_mount) { 733 int error = samount(periph, 0, bp->bio_dev); 734 if (error) { 735 cam_periph_unlock(periph); 736 biofinish(bp, NULL, ENXIO); 737 return; 738 } 739 saprevent(periph, PR_PREVENT); 740 softc->open_pending_mount = 0; 741 } 742 743 744 /* 745 * If it's a null transfer, return immediately 746 */ 747 if (bp->bio_bcount == 0) { 748 cam_periph_unlock(periph); 749 biodone(bp); 750 return; 751 } 752 753 /* valid request? */ 754 if (softc->flags & SA_FLAG_FIXED) { 755 /* 756 * Fixed block device. The byte count must 757 * be a multiple of our block size. 758 */ 759 if (((softc->blk_mask != ~0) && 760 ((bp->bio_bcount & softc->blk_mask) != 0)) || 761 ((softc->blk_mask == ~0) && 762 ((bp->bio_bcount % softc->min_blk) != 0))) { 763 xpt_print(periph->path, "Invalid request. Fixed block " 764 "device requests must be a multiple of %d bytes\n", 765 softc->min_blk); 766 cam_periph_unlock(periph); 767 biofinish(bp, NULL, EINVAL); 768 return; 769 } 770 } else if ((bp->bio_bcount > softc->max_blk) || 771 (bp->bio_bcount < softc->min_blk) || 772 (bp->bio_bcount & softc->blk_mask) != 0) { 773 774 xpt_print_path(periph->path); 775 printf("Invalid request. Variable block " 776 "device requests must be "); 777 if (softc->blk_mask != 0) { 778 printf("a multiple of %d ", (0x1 << softc->blk_gran)); 779 } 780 printf("between %d and %d bytes\n", softc->min_blk, 781 softc->max_blk); 782 cam_periph_unlock(periph); 783 biofinish(bp, NULL, EINVAL); 784 return; 785 } 786 787 /* 788 * Place it at the end of the queue. 789 */ 790 bioq_insert_tail(&softc->bio_queue, bp); 791 softc->queue_count++; 792#if 0 793 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 794 ("sastrategy: queuing a %ld %s byte %s\n", bp->bio_bcount, 795 (softc->flags & SA_FLAG_FIXED)? "fixed" : "variable", 796 (bp->bio_cmd == BIO_READ)? "read" : "write")); 797#endif 798 if (softc->queue_count > 1) { 799 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 800 ("sastrategy: queue count now %d\n", softc->queue_count)); 801 } 802 803 /* 804 * Schedule ourselves for performing the work. 805 */ 806 xpt_schedule(periph, CAM_PRIORITY_NORMAL); 807 cam_periph_unlock(periph); 808 809 return; 810} 811 812 813#define PENDING_MOUNT_CHECK(softc, periph, dev) \ 814 if (softc->open_pending_mount) { \ 815 error = samount(periph, 0, dev); \ 816 if (error) { \ 817 break; \ 818 } \ 819 saprevent(periph, PR_PREVENT); \ 820 softc->open_pending_mount = 0; \ 821 } 822 823static int 824saioctl(struct cdev *dev, u_long cmd, caddr_t arg, int flag, struct thread *td) 825{ 826 struct cam_periph *periph; 827 struct sa_softc *softc; 828 scsi_space_code spaceop; 829 int didlockperiph = 0; 830 int mode; 831 int error = 0; 832 833 mode = SAMODE(dev); 834 error = 0; /* shut up gcc */ 835 spaceop = 0; /* shut up gcc */ 836 837 periph = (struct cam_periph *)dev->si_drv1; 838 if (periph == NULL) 839 return (ENXIO); 840 841 cam_periph_lock(periph); 842 softc = (struct sa_softc *)periph->softc; 843 844 /* 845 * Check for control mode accesses. We allow MTIOCGET and 846 * MTIOCERRSTAT (but need to be the only one open in order 847 * to clear latched status), and MTSETBSIZE, MTSETDNSTY 848 * and MTCOMP (but need to be the only one accessing this 849 * device to run those). 850 */ 851 852 if (SA_IS_CTRL(dev)) { 853 switch (cmd) { 854 case MTIOCGETEOTMODEL: 855 case MTIOCGET: 856 break; 857 case MTIOCERRSTAT: 858 /* 859 * If the periph isn't already locked, lock it 860 * so our MTIOCERRSTAT can reset latched error stats. 861 * 862 * If the periph is already locked, skip it because 863 * we're just getting status and it'll be up to the 864 * other thread that has this device open to do 865 * an MTIOCERRSTAT that would clear latched status. 866 */ 867 if ((periph->flags & CAM_PERIPH_LOCKED) == 0) { 868 error = cam_periph_hold(periph, PRIBIO|PCATCH); 869 if (error != 0) { 870 cam_periph_unlock(periph); 871 return (error); 872 } 873 didlockperiph = 1; 874 } 875 break; 876 877 case MTIOCTOP: 878 { 879 struct mtop *mt = (struct mtop *) arg; 880 881 /* 882 * Check to make sure it's an OP we can perform 883 * with no media inserted. 884 */ 885 switch (mt->mt_op) { 886 case MTSETBSIZ: 887 case MTSETDNSTY: 888 case MTCOMP: 889 mt = NULL; 890 /* FALLTHROUGH */ 891 default: 892 break; 893 } 894 if (mt != NULL) { 895 break; 896 } 897 /* FALLTHROUGH */ 898 } 899 case MTIOCSETEOTMODEL: 900 /* 901 * We need to acquire the peripheral here rather 902 * than at open time because we are sharing writable 903 * access to data structures. 904 */ 905 error = cam_periph_hold(periph, PRIBIO|PCATCH); 906 if (error != 0) { 907 cam_periph_unlock(periph); 908 return (error); 909 } 910 didlockperiph = 1; 911 break; 912 913 default: 914 cam_periph_unlock(periph); 915 return (EINVAL); 916 } 917 } 918 919 /* 920 * Find the device that the user is talking about 921 */ 922 switch (cmd) { 923 case MTIOCGET: 924 { 925 struct mtget *g = (struct mtget *)arg; 926 927 /* 928 * If this isn't the control mode device, actually go out 929 * and ask the drive again what it's set to. 930 */ 931 if (!SA_IS_CTRL(dev) && !softc->open_pending_mount) { 932 u_int8_t write_protect; 933 int comp_enabled, comp_supported; 934 error = sagetparams(periph, SA_PARAM_ALL, 935 &softc->media_blksize, &softc->media_density, 936 &softc->media_numblks, &softc->buffer_mode, 937 &write_protect, &softc->speed, &comp_supported, 938 &comp_enabled, &softc->comp_algorithm, NULL); 939 if (error) 940 break; 941 if (write_protect) 942 softc->flags |= SA_FLAG_TAPE_WP; 943 else 944 softc->flags &= ~SA_FLAG_TAPE_WP; 945 softc->flags &= ~(SA_FLAG_COMP_SUPP| 946 SA_FLAG_COMP_ENABLED|SA_FLAG_COMP_UNSUPP); 947 if (comp_supported) { 948 if (softc->saved_comp_algorithm == 0) 949 softc->saved_comp_algorithm = 950 softc->comp_algorithm; 951 softc->flags |= SA_FLAG_COMP_SUPP; 952 if (comp_enabled) 953 softc->flags |= SA_FLAG_COMP_ENABLED; 954 } else 955 softc->flags |= SA_FLAG_COMP_UNSUPP; 956 } 957 bzero(g, sizeof(struct mtget)); 958 g->mt_type = MT_ISAR; 959 if (softc->flags & SA_FLAG_COMP_UNSUPP) { 960 g->mt_comp = MT_COMP_UNSUPP; 961 g->mt_comp0 = MT_COMP_UNSUPP; 962 g->mt_comp1 = MT_COMP_UNSUPP; 963 g->mt_comp2 = MT_COMP_UNSUPP; 964 g->mt_comp3 = MT_COMP_UNSUPP; 965 } else { 966 if ((softc->flags & SA_FLAG_COMP_ENABLED) == 0) { 967 g->mt_comp = MT_COMP_DISABLED; 968 } else { 969 g->mt_comp = softc->comp_algorithm; 970 } 971 g->mt_comp0 = softc->comp_algorithm; 972 g->mt_comp1 = softc->comp_algorithm; 973 g->mt_comp2 = softc->comp_algorithm; 974 g->mt_comp3 = softc->comp_algorithm; 975 } 976 g->mt_density = softc->media_density; 977 g->mt_density0 = softc->media_density; 978 g->mt_density1 = softc->media_density; 979 g->mt_density2 = softc->media_density; 980 g->mt_density3 = softc->media_density; 981 g->mt_blksiz = softc->media_blksize; 982 g->mt_blksiz0 = softc->media_blksize; 983 g->mt_blksiz1 = softc->media_blksize; 984 g->mt_blksiz2 = softc->media_blksize; 985 g->mt_blksiz3 = softc->media_blksize; 986 g->mt_fileno = softc->fileno; 987 g->mt_blkno = softc->blkno; 988 g->mt_dsreg = (short) softc->dsreg; 989 /* 990 * Yes, we know that this is likely to overflow 991 */ 992 if (softc->last_resid_was_io) { 993 if ((g->mt_resid = (short) softc->last_io_resid) != 0) { 994 if (SA_IS_CTRL(dev) == 0 || didlockperiph) { 995 softc->last_io_resid = 0; 996 } 997 } 998 } else { 999 if ((g->mt_resid = (short)softc->last_ctl_resid) != 0) { 1000 if (SA_IS_CTRL(dev) == 0 || didlockperiph) { 1001 softc->last_ctl_resid = 0; 1002 } 1003 } 1004 } 1005 error = 0; 1006 break; 1007 } 1008 case MTIOCERRSTAT: 1009 { 1010 struct scsi_tape_errors *sep = 1011 &((union mterrstat *)arg)->scsi_errstat; 1012 1013 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, 1014 ("saioctl: MTIOCERRSTAT\n")); 1015 1016 bzero(sep, sizeof(*sep)); 1017 sep->io_resid = softc->last_io_resid; 1018 bcopy((caddr_t) &softc->last_io_sense, sep->io_sense, 1019 sizeof (sep->io_sense)); 1020 bcopy((caddr_t) &softc->last_io_cdb, sep->io_cdb, 1021 sizeof (sep->io_cdb)); 1022 sep->ctl_resid = softc->last_ctl_resid; 1023 bcopy((caddr_t) &softc->last_ctl_sense, sep->ctl_sense, 1024 sizeof (sep->ctl_sense)); 1025 bcopy((caddr_t) &softc->last_ctl_cdb, sep->ctl_cdb, 1026 sizeof (sep->ctl_cdb)); 1027 1028 if ((SA_IS_CTRL(dev) == 0 && softc->open_pending_mount) || 1029 didlockperiph) 1030 bzero((caddr_t) &softc->errinfo, 1031 sizeof (softc->errinfo)); 1032 error = 0; 1033 break; 1034 } 1035 case MTIOCTOP: 1036 { 1037 struct mtop *mt; 1038 int count; 1039 1040 PENDING_MOUNT_CHECK(softc, periph, dev); 1041 1042 mt = (struct mtop *)arg; 1043 1044 1045 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, 1046 ("saioctl: op=0x%x count=0x%x\n", 1047 mt->mt_op, mt->mt_count)); 1048 1049 count = mt->mt_count; 1050 switch (mt->mt_op) { 1051 case MTWEOF: /* write an end-of-file marker */ 1052 /* 1053 * We don't need to clear the SA_FLAG_TAPE_WRITTEN 1054 * flag because by keeping track of filemarks 1055 * we have last written we know ehether or not 1056 * we need to write more when we close the device. 1057 */ 1058 error = sawritefilemarks(periph, count, FALSE); 1059 break; 1060 case MTWSS: /* write a setmark */ 1061 error = sawritefilemarks(periph, count, TRUE); 1062 break; 1063 case MTBSR: /* backward space record */ 1064 case MTFSR: /* forward space record */ 1065 case MTBSF: /* backward space file */ 1066 case MTFSF: /* forward space file */ 1067 case MTBSS: /* backward space setmark */ 1068 case MTFSS: /* forward space setmark */ 1069 case MTEOD: /* space to end of recorded medium */ 1070 { 1071 int nmarks; 1072 1073 spaceop = SS_FILEMARKS; 1074 nmarks = softc->filemarks; 1075 error = sacheckeod(periph); 1076 if (error) { 1077 xpt_print(periph->path, 1078 "EOD check prior to spacing failed\n"); 1079 softc->flags |= SA_FLAG_EIO_PENDING; 1080 break; 1081 } 1082 nmarks -= softc->filemarks; 1083 switch(mt->mt_op) { 1084 case MTBSR: 1085 count = -count; 1086 /* FALLTHROUGH */ 1087 case MTFSR: 1088 spaceop = SS_BLOCKS; 1089 break; 1090 case MTBSF: 1091 count = -count; 1092 /* FALLTHROUGH */ 1093 case MTFSF: 1094 break; 1095 case MTBSS: 1096 count = -count; 1097 /* FALLTHROUGH */ 1098 case MTFSS: 1099 spaceop = SS_SETMARKS; 1100 break; 1101 case MTEOD: 1102 spaceop = SS_EOD; 1103 count = 0; 1104 nmarks = 0; 1105 break; 1106 default: 1107 error = EINVAL; 1108 break; 1109 } 1110 if (error) 1111 break; 1112 1113 nmarks = softc->filemarks; 1114 /* 1115 * XXX: Why are we checking again? 1116 */ 1117 error = sacheckeod(periph); 1118 if (error) 1119 break; 1120 nmarks -= softc->filemarks; 1121 error = saspace(periph, count - nmarks, spaceop); 1122 /* 1123 * At this point, clear that we've written the tape 1124 * and that we've written any filemarks. We really 1125 * don't know what the applications wishes to do next- 1126 * the sacheckeod's will make sure we terminated the 1127 * tape correctly if we'd been writing, but the next 1128 * action the user application takes will set again 1129 * whether we need to write filemarks. 1130 */ 1131 softc->flags &= 1132 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1133 softc->filemarks = 0; 1134 break; 1135 } 1136 case MTREW: /* rewind */ 1137 PENDING_MOUNT_CHECK(softc, periph, dev); 1138 (void) sacheckeod(periph); 1139 error = sarewind(periph); 1140 /* see above */ 1141 softc->flags &= 1142 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1143 softc->flags &= ~SA_FLAG_ERR_PENDING; 1144 softc->filemarks = 0; 1145 break; 1146 case MTERASE: /* erase */ 1147 PENDING_MOUNT_CHECK(softc, periph, dev); 1148 error = saerase(periph, count); 1149 softc->flags &= 1150 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1151 softc->flags &= ~SA_FLAG_ERR_PENDING; 1152 break; 1153 case MTRETENS: /* re-tension tape */ 1154 PENDING_MOUNT_CHECK(softc, periph, dev); 1155 error = saretension(periph); 1156 softc->flags &= 1157 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1158 softc->flags &= ~SA_FLAG_ERR_PENDING; 1159 break; 1160 case MTOFFL: /* rewind and put the drive offline */ 1161 1162 PENDING_MOUNT_CHECK(softc, periph, dev); 1163 1164 (void) sacheckeod(periph); 1165 /* see above */ 1166 softc->flags &= ~SA_FLAG_TAPE_WRITTEN; 1167 softc->filemarks = 0; 1168 1169 error = sarewind(periph); 1170 /* clear the frozen flag anyway */ 1171 softc->flags &= ~SA_FLAG_TAPE_FROZEN; 1172 1173 /* 1174 * Be sure to allow media removal before ejecting. 1175 */ 1176 1177 saprevent(periph, PR_ALLOW); 1178 if (error == 0) { 1179 error = saloadunload(periph, FALSE); 1180 if (error == 0) { 1181 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 1182 } 1183 } 1184 break; 1185 1186 case MTNOP: /* no operation, sets status only */ 1187 case MTCACHE: /* enable controller cache */ 1188 case MTNOCACHE: /* disable controller cache */ 1189 error = 0; 1190 break; 1191 1192 case MTSETBSIZ: /* Set block size for device */ 1193 1194 PENDING_MOUNT_CHECK(softc, periph, dev); 1195 1196 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, count, 1197 0, 0, 0); 1198 if (error == 0) { 1199 softc->last_media_blksize = 1200 softc->media_blksize; 1201 softc->media_blksize = count; 1202 if (count) { 1203 softc->flags |= SA_FLAG_FIXED; 1204 if (powerof2(count)) { 1205 softc->blk_shift = 1206 ffs(count) - 1; 1207 softc->blk_mask = count - 1; 1208 } else { 1209 softc->blk_mask = ~0; 1210 softc->blk_shift = 0; 1211 } 1212 /* 1213 * Make the user's desire 'persistent'. 1214 */ 1215 softc->quirks &= ~SA_QUIRK_VARIABLE; 1216 softc->quirks |= SA_QUIRK_FIXED; 1217 } else { 1218 softc->flags &= ~SA_FLAG_FIXED; 1219 if (softc->max_blk == 0) { 1220 softc->max_blk = ~0; 1221 } 1222 softc->blk_shift = 0; 1223 if (softc->blk_gran != 0) { 1224 softc->blk_mask = 1225 softc->blk_gran - 1; 1226 } else { 1227 softc->blk_mask = 0; 1228 } 1229 /* 1230 * Make the user's desire 'persistent'. 1231 */ 1232 softc->quirks |= SA_QUIRK_VARIABLE; 1233 softc->quirks &= ~SA_QUIRK_FIXED; 1234 } 1235 } 1236 break; 1237 case MTSETDNSTY: /* Set density for device and mode */ 1238 PENDING_MOUNT_CHECK(softc, periph, dev); 1239 1240 if (count > UCHAR_MAX) { 1241 error = EINVAL; 1242 break; 1243 } else { 1244 error = sasetparams(periph, SA_PARAM_DENSITY, 1245 0, count, 0, 0); 1246 } 1247 break; 1248 case MTCOMP: /* enable compression */ 1249 PENDING_MOUNT_CHECK(softc, periph, dev); 1250 /* 1251 * Some devices don't support compression, and 1252 * don't like it if you ask them for the 1253 * compression page. 1254 */ 1255 if ((softc->quirks & SA_QUIRK_NOCOMP) || 1256 (softc->flags & SA_FLAG_COMP_UNSUPP)) { 1257 error = ENODEV; 1258 break; 1259 } 1260 error = sasetparams(periph, SA_PARAM_COMPRESSION, 1261 0, 0, count, SF_NO_PRINT); 1262 break; 1263 default: 1264 error = EINVAL; 1265 } 1266 break; 1267 } 1268 case MTIOCIEOT: 1269 case MTIOCEEOT: 1270 error = 0; 1271 break; 1272 case MTIOCRDSPOS: 1273 PENDING_MOUNT_CHECK(softc, periph, dev); 1274 error = sardpos(periph, 0, (u_int32_t *) arg); 1275 break; 1276 case MTIOCRDHPOS: 1277 PENDING_MOUNT_CHECK(softc, periph, dev); 1278 error = sardpos(periph, 1, (u_int32_t *) arg); 1279 break; 1280 case MTIOCSLOCATE: 1281 PENDING_MOUNT_CHECK(softc, periph, dev); 1282 error = sasetpos(periph, 0, (u_int32_t *) arg); 1283 break; 1284 case MTIOCHLOCATE: 1285 PENDING_MOUNT_CHECK(softc, periph, dev); 1286 error = sasetpos(periph, 1, (u_int32_t *) arg); 1287 break; 1288 case MTIOCGETEOTMODEL: 1289 error = 0; 1290 if (softc->quirks & SA_QUIRK_1FM) 1291 mode = 1; 1292 else 1293 mode = 2; 1294 *((u_int32_t *) arg) = mode; 1295 break; 1296 case MTIOCSETEOTMODEL: 1297 error = 0; 1298 switch (*((u_int32_t *) arg)) { 1299 case 1: 1300 softc->quirks &= ~SA_QUIRK_2FM; 1301 softc->quirks |= SA_QUIRK_1FM; 1302 break; 1303 case 2: 1304 softc->quirks &= ~SA_QUIRK_1FM; 1305 softc->quirks |= SA_QUIRK_2FM; 1306 break; 1307 default: 1308 error = EINVAL; 1309 break; 1310 } 1311 break; 1312 default: 1313 error = cam_periph_ioctl(periph, cmd, arg, saerror); 1314 break; 1315 } 1316 1317 /* 1318 * Check to see if we cleared a frozen state 1319 */ 1320 if (error == 0 && (softc->flags & SA_FLAG_TAPE_FROZEN)) { 1321 switch(cmd) { 1322 case MTIOCRDSPOS: 1323 case MTIOCRDHPOS: 1324 case MTIOCSLOCATE: 1325 case MTIOCHLOCATE: 1326 softc->fileno = (daddr_t) -1; 1327 softc->blkno = (daddr_t) -1; 1328 softc->flags &= ~SA_FLAG_TAPE_FROZEN; 1329 xpt_print(periph->path, 1330 "tape state now unfrozen.\n"); 1331 break; 1332 default: 1333 break; 1334 } 1335 } 1336 if (didlockperiph) { 1337 cam_periph_unhold(periph); 1338 } 1339 cam_periph_unlock(periph); 1340 return (error); 1341} 1342 1343static void 1344sainit(void) 1345{ 1346 cam_status status; 1347 1348 /* 1349 * Install a global async callback. 1350 */ 1351 status = xpt_register_async(AC_FOUND_DEVICE, saasync, NULL, NULL); 1352 1353 if (status != CAM_REQ_CMP) { 1354 printf("sa: Failed to attach master async callback " 1355 "due to status 0x%x!\n", status); 1356 } 1357} 1358 1359static void 1360saoninvalidate(struct cam_periph *periph) 1361{ 1362 struct sa_softc *softc; 1363 1364 softc = (struct sa_softc *)periph->softc; 1365 1366 /* 1367 * De-register any async callbacks. 1368 */ 1369 xpt_register_async(0, saasync, periph, periph->path); 1370 1371 softc->flags |= SA_FLAG_INVALID; 1372 1373 /* 1374 * Return all queued I/O with ENXIO. 1375 * XXX Handle any transactions queued to the card 1376 * with XPT_ABORT_CCB. 1377 */ 1378 bioq_flush(&softc->bio_queue, NULL, ENXIO); 1379 softc->queue_count = 0; 1380} 1381 1382static void 1383sacleanup(struct cam_periph *periph) 1384{ 1385 struct sa_softc *softc; 1386 int i; 1387 1388 softc = (struct sa_softc *)periph->softc; 1389 1390 devstat_remove_entry(softc->device_stats); 1391 cam_periph_unlock(periph); 1392 destroy_dev(softc->devs.ctl_dev); 1393 for (i = 0; i < SA_NUM_MODES; i++) { 1394 destroy_dev(softc->devs.mode_devs[i].r_dev); 1395 destroy_dev(softc->devs.mode_devs[i].nr_dev); 1396 destroy_dev(softc->devs.mode_devs[i].er_dev); 1397 } 1398 cam_periph_lock(periph); 1399 free(softc, M_SCSISA); 1400} 1401 1402static void 1403saasync(void *callback_arg, u_int32_t code, 1404 struct cam_path *path, void *arg) 1405{ 1406 struct cam_periph *periph; 1407 1408 periph = (struct cam_periph *)callback_arg; 1409 switch (code) { 1410 case AC_FOUND_DEVICE: 1411 { 1412 struct ccb_getdev *cgd; 1413 cam_status status; 1414 1415 cgd = (struct ccb_getdev *)arg; 1416 if (cgd == NULL) 1417 break; 1418 1419 if (cgd->protocol != PROTO_SCSI) 1420 break; 1421 1422 if (SID_TYPE(&cgd->inq_data) != T_SEQUENTIAL) 1423 break; 1424 1425 /* 1426 * Allocate a peripheral instance for 1427 * this device and start the probe 1428 * process. 1429 */ 1430 status = cam_periph_alloc(saregister, saoninvalidate, 1431 sacleanup, sastart, 1432 "sa", CAM_PERIPH_BIO, cgd->ccb_h.path, 1433 saasync, AC_FOUND_DEVICE, cgd); 1434 1435 if (status != CAM_REQ_CMP 1436 && status != CAM_REQ_INPROG) 1437 printf("saasync: Unable to probe new device " 1438 "due to status 0x%x\n", status); 1439 break; 1440 } 1441 default: 1442 cam_periph_async(periph, code, path, arg); 1443 break; 1444 } 1445} 1446 1447static cam_status 1448saregister(struct cam_periph *periph, void *arg) 1449{ 1450 struct sa_softc *softc; 1451 struct ccb_getdev *cgd; 1452 struct ccb_pathinq cpi; 1453 caddr_t match; 1454 int i; 1455 1456 cgd = (struct ccb_getdev *)arg; 1457 if (cgd == NULL) { 1458 printf("saregister: no getdev CCB, can't register device\n"); 1459 return (CAM_REQ_CMP_ERR); 1460 } 1461 1462 softc = (struct sa_softc *) 1463 malloc(sizeof (*softc), M_SCSISA, M_NOWAIT | M_ZERO); 1464 if (softc == NULL) { 1465 printf("saregister: Unable to probe new device. " 1466 "Unable to allocate softc\n"); 1467 return (CAM_REQ_CMP_ERR); 1468 } 1469 softc->scsi_rev = SID_ANSI_REV(&cgd->inq_data); 1470 softc->state = SA_STATE_NORMAL; 1471 softc->fileno = (daddr_t) -1; 1472 softc->blkno = (daddr_t) -1; 1473 1474 bioq_init(&softc->bio_queue); 1475 periph->softc = softc; 1476 1477 /* 1478 * See if this device has any quirks. 1479 */ 1480 match = cam_quirkmatch((caddr_t)&cgd->inq_data, 1481 (caddr_t)sa_quirk_table, 1482 sizeof(sa_quirk_table)/sizeof(*sa_quirk_table), 1483 sizeof(*sa_quirk_table), scsi_inquiry_match); 1484 1485 if (match != NULL) { 1486 softc->quirks = ((struct sa_quirk_entry *)match)->quirks; 1487 softc->last_media_blksize = 1488 ((struct sa_quirk_entry *)match)->prefblk; 1489 } else 1490 softc->quirks = SA_QUIRK_NONE; 1491 1492 bzero(&cpi, sizeof(cpi)); 1493 xpt_setup_ccb(&cpi.ccb_h, periph->path, CAM_PRIORITY_NORMAL); 1494 cpi.ccb_h.func_code = XPT_PATH_INQ; 1495 xpt_action((union ccb *)&cpi); 1496 1497 /* 1498 * The SA driver supports a blocksize, but we don't know the 1499 * blocksize until we media is inserted. So, set a flag to 1500 * indicate that the blocksize is unavailable right now. 1501 */ 1502 cam_periph_unlock(periph); 1503 softc->device_stats = devstat_new_entry("sa", periph->unit_number, 0, 1504 DEVSTAT_BS_UNAVAILABLE, SID_TYPE(&cgd->inq_data) | 1505 XPORT_DEVSTAT_TYPE(cpi.transport), DEVSTAT_PRIORITY_TAPE); 1506 1507 /* 1508 * If maxio isn't set, we fall back to DFLTPHYS. If it is set, we 1509 * take it whether or not it's larger than MAXPHYS. physio will 1510 * break it down into pieces small enough to fit in a buffer. 1511 */ 1512 if (cpi.maxio == 0) 1513 softc->maxio = DFLTPHYS; 1514 else 1515 softc->maxio = cpi.maxio; 1516 1517 /* 1518 * If the SIM supports unmapped I/O, let physio know that we can 1519 * handle unmapped buffers. 1520 */ 1521 if (cpi.hba_misc & PIM_UNMAPPED) 1522 softc->si_flags = SI_UNMAPPED; 1523 1524 softc->devs.ctl_dev = make_dev(&sa_cdevsw, SAMINOR(SA_CTLDEV, 1525 0, SA_ATYPE_R), UID_ROOT, GID_OPERATOR, 1526 0660, "%s%d.ctl", periph->periph_name, periph->unit_number); 1527 softc->devs.ctl_dev->si_drv1 = periph; 1528 softc->devs.ctl_dev->si_iosize_max = softc->maxio; 1529 softc->devs.ctl_dev->si_flags |= softc->si_flags; 1530 1531 for (i = 0; i < SA_NUM_MODES; i++) { 1532 1533 softc->devs.mode_devs[i].r_dev = make_dev(&sa_cdevsw, 1534 SAMINOR(SA_NOT_CTLDEV, i, SA_ATYPE_R), 1535 UID_ROOT, GID_OPERATOR, 0660, "%s%d.%d", 1536 periph->periph_name, periph->unit_number, i); 1537 softc->devs.mode_devs[i].r_dev->si_drv1 = periph; 1538 softc->devs.mode_devs[i].r_dev->si_iosize_max = softc->maxio; 1539 softc->devs.mode_devs[i].r_dev->si_flags |= softc->si_flags; 1540 1541 softc->devs.mode_devs[i].nr_dev = make_dev(&sa_cdevsw, 1542 SAMINOR(SA_NOT_CTLDEV, i, SA_ATYPE_NR), 1543 UID_ROOT, GID_OPERATOR, 0660, "n%s%d.%d", 1544 periph->periph_name, periph->unit_number, i); 1545 softc->devs.mode_devs[i].nr_dev->si_drv1 = periph; 1546 softc->devs.mode_devs[i].nr_dev->si_iosize_max = softc->maxio; 1547 softc->devs.mode_devs[i].nr_dev->si_flags |= softc->si_flags; 1548 1549 softc->devs.mode_devs[i].er_dev = make_dev(&sa_cdevsw, 1550 SAMINOR(SA_NOT_CTLDEV, i, SA_ATYPE_ER), 1551 UID_ROOT, GID_OPERATOR, 0660, "e%s%d.%d", 1552 periph->periph_name, periph->unit_number, i); 1553 softc->devs.mode_devs[i].er_dev->si_drv1 = periph; 1554 softc->devs.mode_devs[i].er_dev->si_iosize_max = softc->maxio; 1555 softc->devs.mode_devs[i].er_dev->si_flags |= softc->si_flags; 1556 1557 /* 1558 * Make the (well known) aliases for the first mode. 1559 */ 1560 if (i == 0) { 1561 struct cdev *alias; 1562 1563 alias = make_dev_alias(softc->devs.mode_devs[i].r_dev, 1564 "%s%d", periph->periph_name, periph->unit_number); 1565 alias->si_drv1 = periph; 1566 alias->si_iosize_max = softc->maxio; 1567 alias->si_flags |= softc->si_flags; 1568 1569 alias = make_dev_alias(softc->devs.mode_devs[i].nr_dev, 1570 "n%s%d", periph->periph_name, periph->unit_number); 1571 alias->si_drv1 = periph; 1572 alias->si_iosize_max = softc->maxio; 1573 alias->si_flags |= softc->si_flags; 1574 1575 alias = make_dev_alias(softc->devs.mode_devs[i].er_dev, 1576 "e%s%d", periph->periph_name, periph->unit_number); 1577 alias->si_drv1 = periph; 1578 alias->si_iosize_max = softc->maxio; 1579 alias->si_flags |= softc->si_flags; 1580 } 1581 } 1582 cam_periph_lock(periph); 1583 1584 /* 1585 * Add an async callback so that we get 1586 * notified if this device goes away. 1587 */ 1588 xpt_register_async(AC_LOST_DEVICE, saasync, periph, periph->path); 1589 1590 xpt_announce_periph(periph, NULL); 1591 xpt_announce_quirks(periph, softc->quirks, SA_QUIRK_BIT_STRING); 1592 1593 return (CAM_REQ_CMP); 1594} 1595 1596static void 1597sastart(struct cam_periph *periph, union ccb *start_ccb) 1598{ 1599 struct sa_softc *softc; 1600 1601 softc = (struct sa_softc *)periph->softc; 1602 1603 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("sastart\n")); 1604 1605 1606 switch (softc->state) { 1607 case SA_STATE_NORMAL: 1608 { 1609 /* Pull a buffer from the queue and get going on it */ 1610 struct bio *bp; 1611 1612 /* 1613 * See if there is a buf with work for us to do.. 1614 */ 1615 bp = bioq_first(&softc->bio_queue); 1616 if (periph->immediate_priority <= periph->pinfo.priority) { 1617 CAM_DEBUG_PRINT(CAM_DEBUG_SUBTRACE, 1618 ("queuing for immediate ccb\n")); 1619 Set_CCB_Type(start_ccb, SA_CCB_WAITING); 1620 SLIST_INSERT_HEAD(&periph->ccb_list, &start_ccb->ccb_h, 1621 periph_links.sle); 1622 periph->immediate_priority = CAM_PRIORITY_NONE; 1623 wakeup(&periph->ccb_list); 1624 } else if (bp == NULL) { 1625 xpt_release_ccb(start_ccb); 1626 } else if ((softc->flags & SA_FLAG_ERR_PENDING) != 0) { 1627 struct bio *done_bp; 1628again: 1629 softc->queue_count--; 1630 bioq_remove(&softc->bio_queue, bp); 1631 bp->bio_resid = bp->bio_bcount; 1632 done_bp = bp; 1633 if ((softc->flags & SA_FLAG_EOM_PENDING) != 0) { 1634 /* 1635 * We now just clear errors in this case 1636 * and let the residual be the notifier. 1637 */ 1638 bp->bio_error = 0; 1639 } else if ((softc->flags & SA_FLAG_EOF_PENDING) != 0) { 1640 /* 1641 * This can only happen if we're reading 1642 * in fixed length mode. In this case, 1643 * we dump the rest of the list the 1644 * same way. 1645 */ 1646 bp->bio_error = 0; 1647 if (bioq_first(&softc->bio_queue) != NULL) { 1648 biodone(done_bp); 1649 goto again; 1650 } 1651 } else if ((softc->flags & SA_FLAG_EIO_PENDING) != 0) { 1652 bp->bio_error = EIO; 1653 bp->bio_flags |= BIO_ERROR; 1654 } 1655 bp = bioq_first(&softc->bio_queue); 1656 /* 1657 * Only if we have no other buffers queued up 1658 * do we clear the pending error flag. 1659 */ 1660 if (bp == NULL) 1661 softc->flags &= ~SA_FLAG_ERR_PENDING; 1662 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 1663 ("sastart- ERR_PENDING now 0x%x, bp is %sNULL, " 1664 "%d more buffers queued up\n", 1665 (softc->flags & SA_FLAG_ERR_PENDING), 1666 (bp != NULL)? "not " : " ", softc->queue_count)); 1667 xpt_release_ccb(start_ccb); 1668 biodone(done_bp); 1669 } else { 1670 u_int32_t length; 1671 1672 bioq_remove(&softc->bio_queue, bp); 1673 softc->queue_count--; 1674 1675 if ((softc->flags & SA_FLAG_FIXED) != 0) { 1676 if (softc->blk_shift != 0) { 1677 length = 1678 bp->bio_bcount >> softc->blk_shift; 1679 } else if (softc->media_blksize != 0) { 1680 length = bp->bio_bcount / 1681 softc->media_blksize; 1682 } else { 1683 bp->bio_error = EIO; 1684 xpt_print(periph->path, "zero blocksize" 1685 " for FIXED length writes?\n"); 1686 biodone(bp); 1687 break; 1688 } 1689#if 0 1690 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_INFO, 1691 ("issuing a %d fixed record %s\n", 1692 length, (bp->bio_cmd == BIO_READ)? "read" : 1693 "write")); 1694#endif 1695 } else { 1696 length = bp->bio_bcount; 1697#if 0 1698 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_INFO, 1699 ("issuing a %d variable byte %s\n", 1700 length, (bp->bio_cmd == BIO_READ)? "read" : 1701 "write")); 1702#endif 1703 } 1704 devstat_start_transaction_bio(softc->device_stats, bp); 1705 /* 1706 * Some people have theorized that we should 1707 * suppress illegal length indication if we are 1708 * running in variable block mode so that we don't 1709 * have to request sense every time our requested 1710 * block size is larger than the written block. 1711 * The residual information from the ccb allows 1712 * us to identify this situation anyway. The only 1713 * problem with this is that we will not get 1714 * information about blocks that are larger than 1715 * our read buffer unless we set the block size 1716 * in the mode page to something other than 0. 1717 * 1718 * I believe that this is a non-issue. If user apps 1719 * don't adjust their read size to match our record 1720 * size, that's just life. Anyway, the typical usage 1721 * would be to issue, e.g., 64KB reads and occasionally 1722 * have to do deal with 512 byte or 1KB intermediate 1723 * records. 1724 */ 1725 softc->dsreg = (bp->bio_cmd == BIO_READ)? 1726 MTIO_DSREG_RD : MTIO_DSREG_WR; 1727 scsi_sa_read_write(&start_ccb->csio, 0, sadone, 1728 MSG_SIMPLE_Q_TAG, (bp->bio_cmd == BIO_READ ? 1729 SCSI_RW_READ : SCSI_RW_WRITE) | 1730 ((bp->bio_flags & BIO_UNMAPPED) != 0 ? 1731 SCSI_RW_BIO : 0), FALSE, 1732 (softc->flags & SA_FLAG_FIXED) != 0, length, 1733 (bp->bio_flags & BIO_UNMAPPED) != 0 ? (void *)bp : 1734 bp->bio_data, bp->bio_bcount, SSD_FULL_SIZE, 1735 IO_TIMEOUT); 1736 start_ccb->ccb_h.ccb_pflags &= ~SA_POSITION_UPDATED; 1737 Set_CCB_Type(start_ccb, SA_CCB_BUFFER_IO); 1738 start_ccb->ccb_h.ccb_bp = bp; 1739 bp = bioq_first(&softc->bio_queue); 1740 xpt_action(start_ccb); 1741 } 1742 1743 if (bp != NULL) { 1744 /* Have more work to do, so ensure we stay scheduled */ 1745 xpt_schedule(periph, CAM_PRIORITY_NORMAL); 1746 } 1747 break; 1748 } 1749 case SA_STATE_ABNORMAL: 1750 default: 1751 panic("state 0x%x in sastart", softc->state); 1752 break; 1753 } 1754} 1755 1756 1757static void 1758sadone(struct cam_periph *periph, union ccb *done_ccb) 1759{ 1760 struct sa_softc *softc; 1761 struct ccb_scsiio *csio; 1762 1763 softc = (struct sa_softc *)periph->softc; 1764 csio = &done_ccb->csio; 1765 switch (CCB_Type(csio)) { 1766 case SA_CCB_BUFFER_IO: 1767 { 1768 struct bio *bp; 1769 int error; 1770 1771 softc->dsreg = MTIO_DSREG_REST; 1772 bp = (struct bio *)done_ccb->ccb_h.ccb_bp; 1773 error = 0; 1774 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 1775 if ((error = saerror(done_ccb, 0, 0)) == ERESTART) { 1776 /* 1777 * A retry was scheduled, so just return. 1778 */ 1779 return; 1780 } 1781 } 1782 1783 if (error == EIO) { 1784 1785 /* 1786 * Catastrophic error. Mark the tape as frozen 1787 * (we no longer know tape position). 1788 * 1789 * Return all queued I/O with EIO, and unfreeze 1790 * our queue so that future transactions that 1791 * attempt to fix this problem can get to the 1792 * device. 1793 * 1794 */ 1795 1796 softc->flags |= SA_FLAG_TAPE_FROZEN; 1797 bioq_flush(&softc->bio_queue, NULL, EIO); 1798 } 1799 if (error != 0) { 1800 bp->bio_resid = bp->bio_bcount; 1801 bp->bio_error = error; 1802 bp->bio_flags |= BIO_ERROR; 1803 /* 1804 * In the error case, position is updated in saerror. 1805 */ 1806 } else { 1807 bp->bio_resid = csio->resid; 1808 bp->bio_error = 0; 1809 if (csio->resid != 0) { 1810 bp->bio_flags |= BIO_ERROR; 1811 } 1812 if (bp->bio_cmd == BIO_WRITE) { 1813 softc->flags |= SA_FLAG_TAPE_WRITTEN; 1814 softc->filemarks = 0; 1815 } 1816 if (!(csio->ccb_h.ccb_pflags & SA_POSITION_UPDATED) && 1817 (softc->blkno != (daddr_t) -1)) { 1818 if ((softc->flags & SA_FLAG_FIXED) != 0) { 1819 u_int32_t l; 1820 if (softc->blk_shift != 0) { 1821 l = bp->bio_bcount >> 1822 softc->blk_shift; 1823 } else { 1824 l = bp->bio_bcount / 1825 softc->media_blksize; 1826 } 1827 softc->blkno += (daddr_t) l; 1828 } else { 1829 softc->blkno++; 1830 } 1831 } 1832 } 1833 /* 1834 * If we had an error (immediate or pending), 1835 * release the device queue now. 1836 */ 1837 if (error || (softc->flags & SA_FLAG_ERR_PENDING)) 1838 cam_release_devq(done_ccb->ccb_h.path, 0, 0, 0, 0); 1839 if (error || bp->bio_resid) { 1840 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 1841 ("error %d resid %ld count %ld\n", error, 1842 bp->bio_resid, bp->bio_bcount)); 1843 } 1844 biofinish(bp, softc->device_stats, 0); 1845 break; 1846 } 1847 case SA_CCB_WAITING: 1848 { 1849 /* Caller will release the CCB */ 1850 wakeup(&done_ccb->ccb_h.cbfcnp); 1851 return; 1852 } 1853 } 1854 xpt_release_ccb(done_ccb); 1855} 1856 1857/* 1858 * Mount the tape (make sure it's ready for I/O). 1859 */ 1860static int 1861samount(struct cam_periph *periph, int oflags, struct cdev *dev) 1862{ 1863 struct sa_softc *softc; 1864 union ccb *ccb; 1865 int error; 1866 1867 /* 1868 * oflags can be checked for 'kind' of open (read-only check) - later 1869 * dev can be checked for a control-mode or compression open - later 1870 */ 1871 UNUSED_PARAMETER(oflags); 1872 UNUSED_PARAMETER(dev); 1873 1874 1875 softc = (struct sa_softc *)periph->softc; 1876 1877 /* 1878 * This should determine if something has happend since the last 1879 * open/mount that would invalidate the mount. We do *not* want 1880 * to retry this command- we just want the status. But we only 1881 * do this if we're mounted already- if we're not mounted, 1882 * we don't care about the unit read state and can instead use 1883 * this opportunity to attempt to reserve the tape unit. 1884 */ 1885 1886 if (softc->flags & SA_FLAG_TAPE_MOUNTED) { 1887 ccb = cam_periph_getccb(periph, 1); 1888 scsi_test_unit_ready(&ccb->csio, 0, sadone, 1889 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT); 1890 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1891 softc->device_stats); 1892 if (error == ENXIO) { 1893 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 1894 scsi_test_unit_ready(&ccb->csio, 0, sadone, 1895 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT); 1896 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1897 softc->device_stats); 1898 } else if (error) { 1899 /* 1900 * We don't need to freeze the tape because we 1901 * will now attempt to rewind/load it. 1902 */ 1903 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 1904 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 1905 xpt_print(periph->path, 1906 "error %d on TUR in samount\n", error); 1907 } 1908 } 1909 } else { 1910 error = sareservereleaseunit(periph, TRUE); 1911 if (error) { 1912 return (error); 1913 } 1914 ccb = cam_periph_getccb(periph, 1); 1915 scsi_test_unit_ready(&ccb->csio, 0, sadone, 1916 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT); 1917 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1918 softc->device_stats); 1919 } 1920 1921 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) { 1922 struct scsi_read_block_limits_data *rblim = NULL; 1923 int comp_enabled, comp_supported; 1924 u_int8_t write_protect, guessing = 0; 1925 1926 /* 1927 * Clear out old state. 1928 */ 1929 softc->flags &= ~(SA_FLAG_TAPE_WP|SA_FLAG_TAPE_WRITTEN| 1930 SA_FLAG_ERR_PENDING|SA_FLAG_COMP_ENABLED| 1931 SA_FLAG_COMP_SUPP|SA_FLAG_COMP_UNSUPP); 1932 softc->filemarks = 0; 1933 1934 /* 1935 * *Very* first off, make sure we're loaded to BOT. 1936 */ 1937 scsi_load_unload(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 1938 FALSE, FALSE, 1, SSD_FULL_SIZE, REWIND_TIMEOUT); 1939 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1940 softc->device_stats); 1941 1942 /* 1943 * In case this doesn't work, do a REWIND instead 1944 */ 1945 if (error) { 1946 scsi_rewind(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, 1947 FALSE, SSD_FULL_SIZE, REWIND_TIMEOUT); 1948 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1949 softc->device_stats); 1950 } 1951 if (error) { 1952 xpt_release_ccb(ccb); 1953 goto exit; 1954 } 1955 1956 /* 1957 * Do a dummy test read to force access to the 1958 * media so that the drive will really know what's 1959 * there. We actually don't really care what the 1960 * blocksize on tape is and don't expect to really 1961 * read a full record. 1962 */ 1963 rblim = (struct scsi_read_block_limits_data *) 1964 malloc(8192, M_SCSISA, M_NOWAIT); 1965 if (rblim == NULL) { 1966 xpt_print(periph->path, "no memory for test read\n"); 1967 xpt_release_ccb(ccb); 1968 error = ENOMEM; 1969 goto exit; 1970 } 1971 1972 if ((softc->quirks & SA_QUIRK_NODREAD) == 0) { 1973 scsi_sa_read_write(&ccb->csio, 0, sadone, 1974 MSG_SIMPLE_Q_TAG, 1, FALSE, 0, 8192, 1975 (void *) rblim, 8192, SSD_FULL_SIZE, 1976 IO_TIMEOUT); 1977 (void) cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1978 softc->device_stats); 1979 scsi_rewind(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, 1980 FALSE, SSD_FULL_SIZE, REWIND_TIMEOUT); 1981 error = cam_periph_runccb(ccb, saerror, CAM_RETRY_SELTO, 1982 SF_NO_PRINT | SF_RETRY_UA, 1983 softc->device_stats); 1984 if (error) { 1985 xpt_print(periph->path, 1986 "unable to rewind after test read\n"); 1987 xpt_release_ccb(ccb); 1988 goto exit; 1989 } 1990 } 1991 1992 /* 1993 * Next off, determine block limits. 1994 */ 1995 scsi_read_block_limits(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, 1996 rblim, SSD_FULL_SIZE, SCSIOP_TIMEOUT); 1997 1998 error = cam_periph_runccb(ccb, saerror, CAM_RETRY_SELTO, 1999 SF_NO_PRINT | SF_RETRY_UA, softc->device_stats); 2000 2001 xpt_release_ccb(ccb); 2002 2003 if (error != 0) { 2004 /* 2005 * If it's less than SCSI-2, READ BLOCK LIMITS is not 2006 * a MANDATORY command. Anyway- it doesn't matter- 2007 * we can proceed anyway. 2008 */ 2009 softc->blk_gran = 0; 2010 softc->max_blk = ~0; 2011 softc->min_blk = 0; 2012 } else { 2013 if (softc->scsi_rev >= SCSI_REV_SPC) { 2014 softc->blk_gran = RBL_GRAN(rblim); 2015 } else { 2016 softc->blk_gran = 0; 2017 } 2018 /* 2019 * We take max_blk == min_blk to mean a default to 2020 * fixed mode- but note that whatever we get out of 2021 * sagetparams below will actually determine whether 2022 * we are actually *in* fixed mode. 2023 */ 2024 softc->max_blk = scsi_3btoul(rblim->maximum); 2025 softc->min_blk = scsi_2btoul(rblim->minimum); 2026 2027 2028 } 2029 /* 2030 * Next, perform a mode sense to determine 2031 * current density, blocksize, compression etc. 2032 */ 2033 error = sagetparams(periph, SA_PARAM_ALL, 2034 &softc->media_blksize, 2035 &softc->media_density, 2036 &softc->media_numblks, 2037 &softc->buffer_mode, &write_protect, 2038 &softc->speed, &comp_supported, 2039 &comp_enabled, &softc->comp_algorithm, 2040 NULL); 2041 2042 if (error != 0) { 2043 /* 2044 * We could work a little harder here. We could 2045 * adjust our attempts to get information. It 2046 * might be an ancient tape drive. If someone 2047 * nudges us, we'll do that. 2048 */ 2049 goto exit; 2050 } 2051 2052 /* 2053 * If no quirk has determined that this is a device that is 2054 * preferred to be in fixed or variable mode, now is the time 2055 * to find out. 2056 */ 2057 if ((softc->quirks & (SA_QUIRK_FIXED|SA_QUIRK_VARIABLE)) == 0) { 2058 guessing = 1; 2059 /* 2060 * This could be expensive to find out. Luckily we 2061 * only need to do this once. If we start out in 2062 * 'default' mode, try and set ourselves to one 2063 * of the densities that would determine a wad 2064 * of other stuff. Go from highest to lowest. 2065 */ 2066 if (softc->media_density == SCSI_DEFAULT_DENSITY) { 2067 int i; 2068 static u_int8_t ctry[] = { 2069 SCSI_DENSITY_HALFINCH_PE, 2070 SCSI_DENSITY_HALFINCH_6250C, 2071 SCSI_DENSITY_HALFINCH_6250, 2072 SCSI_DENSITY_HALFINCH_1600, 2073 SCSI_DENSITY_HALFINCH_800, 2074 SCSI_DENSITY_QIC_4GB, 2075 SCSI_DENSITY_QIC_2GB, 2076 SCSI_DENSITY_QIC_525_320, 2077 SCSI_DENSITY_QIC_150, 2078 SCSI_DENSITY_QIC_120, 2079 SCSI_DENSITY_QIC_24, 2080 SCSI_DENSITY_QIC_11_9TRK, 2081 SCSI_DENSITY_QIC_11_4TRK, 2082 SCSI_DENSITY_QIC_1320, 2083 SCSI_DENSITY_QIC_3080, 2084 0 2085 }; 2086 for (i = 0; ctry[i]; i++) { 2087 error = sasetparams(periph, 2088 SA_PARAM_DENSITY, 0, ctry[i], 2089 0, SF_NO_PRINT); 2090 if (error == 0) { 2091 softc->media_density = ctry[i]; 2092 break; 2093 } 2094 } 2095 } 2096 switch (softc->media_density) { 2097 case SCSI_DENSITY_QIC_11_4TRK: 2098 case SCSI_DENSITY_QIC_11_9TRK: 2099 case SCSI_DENSITY_QIC_24: 2100 case SCSI_DENSITY_QIC_120: 2101 case SCSI_DENSITY_QIC_150: 2102 case SCSI_DENSITY_QIC_525_320: 2103 case SCSI_DENSITY_QIC_1320: 2104 case SCSI_DENSITY_QIC_3080: 2105 softc->quirks &= ~SA_QUIRK_2FM; 2106 softc->quirks |= SA_QUIRK_FIXED|SA_QUIRK_1FM; 2107 softc->last_media_blksize = 512; 2108 break; 2109 case SCSI_DENSITY_QIC_4GB: 2110 case SCSI_DENSITY_QIC_2GB: 2111 softc->quirks &= ~SA_QUIRK_2FM; 2112 softc->quirks |= SA_QUIRK_FIXED|SA_QUIRK_1FM; 2113 softc->last_media_blksize = 1024; 2114 break; 2115 default: 2116 softc->last_media_blksize = 2117 softc->media_blksize; 2118 softc->quirks |= SA_QUIRK_VARIABLE; 2119 break; 2120 } 2121 } 2122 2123 /* 2124 * If no quirk has determined that this is a device that needs 2125 * to have 2 Filemarks at EOD, now is the time to find out. 2126 */ 2127 2128 if ((softc->quirks & SA_QUIRK_2FM) == 0) { 2129 switch (softc->media_density) { 2130 case SCSI_DENSITY_HALFINCH_800: 2131 case SCSI_DENSITY_HALFINCH_1600: 2132 case SCSI_DENSITY_HALFINCH_6250: 2133 case SCSI_DENSITY_HALFINCH_6250C: 2134 case SCSI_DENSITY_HALFINCH_PE: 2135 softc->quirks &= ~SA_QUIRK_1FM; 2136 softc->quirks |= SA_QUIRK_2FM; 2137 break; 2138 default: 2139 break; 2140 } 2141 } 2142 2143 /* 2144 * Now validate that some info we got makes sense. 2145 */ 2146 if ((softc->max_blk < softc->media_blksize) || 2147 (softc->min_blk > softc->media_blksize && 2148 softc->media_blksize)) { 2149 xpt_print(periph->path, 2150 "BLOCK LIMITS (%d..%d) could not match current " 2151 "block settings (%d)- adjusting\n", softc->min_blk, 2152 softc->max_blk, softc->media_blksize); 2153 softc->max_blk = softc->min_blk = 2154 softc->media_blksize; 2155 } 2156 2157 /* 2158 * Now put ourselves into the right frame of mind based 2159 * upon quirks... 2160 */ 2161tryagain: 2162 /* 2163 * If we want to be in FIXED mode and our current blocksize 2164 * is not equal to our last blocksize (if nonzero), try and 2165 * set ourselves to this last blocksize (as the 'preferred' 2166 * block size). The initial quirkmatch at registry sets the 2167 * initial 'last' blocksize. If, for whatever reason, this 2168 * 'last' blocksize is zero, set the blocksize to 512, 2169 * or min_blk if that's larger. 2170 */ 2171 if ((softc->quirks & SA_QUIRK_FIXED) && 2172 (softc->quirks & SA_QUIRK_NO_MODESEL) == 0 && 2173 (softc->media_blksize != softc->last_media_blksize)) { 2174 softc->media_blksize = softc->last_media_blksize; 2175 if (softc->media_blksize == 0) { 2176 softc->media_blksize = 512; 2177 if (softc->media_blksize < softc->min_blk) { 2178 softc->media_blksize = softc->min_blk; 2179 } 2180 } 2181 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, 2182 softc->media_blksize, 0, 0, SF_NO_PRINT); 2183 if (error) { 2184 xpt_print(periph->path, 2185 "unable to set fixed blocksize to %d\n", 2186 softc->media_blksize); 2187 goto exit; 2188 } 2189 } 2190 2191 if ((softc->quirks & SA_QUIRK_VARIABLE) && 2192 (softc->media_blksize != 0)) { 2193 softc->last_media_blksize = softc->media_blksize; 2194 softc->media_blksize = 0; 2195 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, 2196 0, 0, 0, SF_NO_PRINT); 2197 if (error) { 2198 /* 2199 * If this fails and we were guessing, just 2200 * assume that we got it wrong and go try 2201 * fixed block mode. Don't even check against 2202 * density code at this point. 2203 */ 2204 if (guessing) { 2205 softc->quirks &= ~SA_QUIRK_VARIABLE; 2206 softc->quirks |= SA_QUIRK_FIXED; 2207 if (softc->last_media_blksize == 0) 2208 softc->last_media_blksize = 512; 2209 goto tryagain; 2210 } 2211 xpt_print(periph->path, 2212 "unable to set variable blocksize\n"); 2213 goto exit; 2214 } 2215 } 2216 2217 /* 2218 * Now that we have the current block size, 2219 * set up some parameters for sastart's usage. 2220 */ 2221 if (softc->media_blksize) { 2222 softc->flags |= SA_FLAG_FIXED; 2223 if (powerof2(softc->media_blksize)) { 2224 softc->blk_shift = 2225 ffs(softc->media_blksize) - 1; 2226 softc->blk_mask = softc->media_blksize - 1; 2227 } else { 2228 softc->blk_mask = ~0; 2229 softc->blk_shift = 0; 2230 } 2231 } else { 2232 /* 2233 * The SCSI-3 spec allows 0 to mean "unspecified". 2234 * The SCSI-1 spec allows 0 to mean 'infinite'. 2235 * 2236 * Either works here. 2237 */ 2238 if (softc->max_blk == 0) { 2239 softc->max_blk = ~0; 2240 } 2241 softc->blk_shift = 0; 2242 if (softc->blk_gran != 0) { 2243 softc->blk_mask = softc->blk_gran - 1; 2244 } else { 2245 softc->blk_mask = 0; 2246 } 2247 } 2248 2249 if (write_protect) 2250 softc->flags |= SA_FLAG_TAPE_WP; 2251 2252 if (comp_supported) { 2253 if (softc->saved_comp_algorithm == 0) 2254 softc->saved_comp_algorithm = 2255 softc->comp_algorithm; 2256 softc->flags |= SA_FLAG_COMP_SUPP; 2257 if (comp_enabled) 2258 softc->flags |= SA_FLAG_COMP_ENABLED; 2259 } else 2260 softc->flags |= SA_FLAG_COMP_UNSUPP; 2261 2262 if ((softc->buffer_mode == SMH_SA_BUF_MODE_NOBUF) && 2263 (softc->quirks & SA_QUIRK_NO_MODESEL) == 0) { 2264 error = sasetparams(periph, SA_PARAM_BUFF_MODE, 0, 2265 0, 0, SF_NO_PRINT); 2266 if (error == 0) { 2267 softc->buffer_mode = SMH_SA_BUF_MODE_SIBUF; 2268 } else { 2269 xpt_print(periph->path, 2270 "unable to set buffered mode\n"); 2271 } 2272 error = 0; /* not an error */ 2273 } 2274 2275 2276 if (error == 0) { 2277 softc->flags |= SA_FLAG_TAPE_MOUNTED; 2278 } 2279exit: 2280 if (rblim != NULL) 2281 free(rblim, M_SCSISA); 2282 2283 if (error != 0) { 2284 softc->dsreg = MTIO_DSREG_NIL; 2285 } else { 2286 softc->fileno = softc->blkno = 0; 2287 softc->dsreg = MTIO_DSREG_REST; 2288 } 2289#ifdef SA_1FM_AT_EOD 2290 if ((softc->quirks & SA_QUIRK_2FM) == 0) 2291 softc->quirks |= SA_QUIRK_1FM; 2292#else 2293 if ((softc->quirks & SA_QUIRK_1FM) == 0) 2294 softc->quirks |= SA_QUIRK_2FM; 2295#endif 2296 } else 2297 xpt_release_ccb(ccb); 2298 2299 /* 2300 * If we return an error, we're not mounted any more, 2301 * so release any device reservation. 2302 */ 2303 if (error != 0) { 2304 (void) sareservereleaseunit(periph, FALSE); 2305 } else { 2306 /* 2307 * Clear I/O residual. 2308 */ 2309 softc->last_io_resid = 0; 2310 softc->last_ctl_resid = 0; 2311 } 2312 return (error); 2313} 2314 2315/* 2316 * How many filemarks do we need to write if we were to terminate the 2317 * tape session right now? Note that this can be a negative number 2318 */ 2319 2320static int 2321samarkswanted(struct cam_periph *periph) 2322{ 2323 int markswanted; 2324 struct sa_softc *softc; 2325 2326 softc = (struct sa_softc *)periph->softc; 2327 markswanted = 0; 2328 if ((softc->flags & SA_FLAG_TAPE_WRITTEN) != 0) { 2329 markswanted++; 2330 if (softc->quirks & SA_QUIRK_2FM) 2331 markswanted++; 2332 } 2333 markswanted -= softc->filemarks; 2334 return (markswanted); 2335} 2336 2337static int 2338sacheckeod(struct cam_periph *periph) 2339{ 2340 int error; 2341 int markswanted; 2342 2343 markswanted = samarkswanted(periph); 2344 2345 if (markswanted > 0) { 2346 error = sawritefilemarks(periph, markswanted, FALSE); 2347 } else { 2348 error = 0; 2349 } 2350 return (error); 2351} 2352 2353static int 2354saerror(union ccb *ccb, u_int32_t cflgs, u_int32_t sflgs) 2355{ 2356 static const char *toobig = 2357 "%d-byte tape record bigger than supplied buffer\n"; 2358 struct cam_periph *periph; 2359 struct sa_softc *softc; 2360 struct ccb_scsiio *csio; 2361 struct scsi_sense_data *sense; 2362 uint64_t resid = 0; 2363 int64_t info = 0; 2364 cam_status status; 2365 int error_code, sense_key, asc, ascq, error, aqvalid, stream_valid; 2366 int sense_len; 2367 uint8_t stream_bits; 2368 2369 periph = xpt_path_periph(ccb->ccb_h.path); 2370 softc = (struct sa_softc *)periph->softc; 2371 csio = &ccb->csio; 2372 sense = &csio->sense_data; 2373 sense_len = csio->sense_len - csio->sense_resid; 2374 scsi_extract_sense_len(sense, sense_len, &error_code, &sense_key, 2375 &asc, &ascq, /*show_errors*/ 1); 2376 if (asc != -1 && ascq != -1) 2377 aqvalid = 1; 2378 else 2379 aqvalid = 0; 2380 if (scsi_get_stream_info(sense, sense_len, NULL, &stream_bits) == 0) 2381 stream_valid = 1; 2382 else 2383 stream_valid = 0; 2384 error = 0; 2385 2386 status = csio->ccb_h.status & CAM_STATUS_MASK; 2387 2388 /* 2389 * Calculate/latch up, any residuals... We do this in a funny 2-step 2390 * so we can print stuff here if we have CAM_DEBUG enabled for this 2391 * unit. 2392 */ 2393 if (status == CAM_SCSI_STATUS_ERROR) { 2394 if (scsi_get_sense_info(sense, sense_len, SSD_DESC_INFO, &resid, 2395 &info) == 0) { 2396 if ((softc->flags & SA_FLAG_FIXED) != 0) 2397 resid *= softc->media_blksize; 2398 } else { 2399 resid = csio->dxfer_len; 2400 info = resid; 2401 if ((softc->flags & SA_FLAG_FIXED) != 0) { 2402 if (softc->media_blksize) 2403 info /= softc->media_blksize; 2404 } 2405 } 2406 if (CCB_Type(csio) == SA_CCB_BUFFER_IO) { 2407 bcopy((caddr_t) sense, (caddr_t) &softc->last_io_sense, 2408 sizeof (struct scsi_sense_data)); 2409 bcopy(csio->cdb_io.cdb_bytes, softc->last_io_cdb, 2410 (int) csio->cdb_len); 2411 softc->last_io_resid = resid; 2412 softc->last_resid_was_io = 1; 2413 } else { 2414 bcopy((caddr_t) sense, (caddr_t) &softc->last_ctl_sense, 2415 sizeof (struct scsi_sense_data)); 2416 bcopy(csio->cdb_io.cdb_bytes, softc->last_ctl_cdb, 2417 (int) csio->cdb_len); 2418 softc->last_ctl_resid = resid; 2419 softc->last_resid_was_io = 0; 2420 } 2421 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("CDB[0]=0x%x Key 0x%x " 2422 "ASC/ASCQ 0x%x/0x%x CAM STATUS 0x%x flags 0x%x resid %jd " 2423 "dxfer_len %d\n", csio->cdb_io.cdb_bytes[0] & 0xff, 2424 sense_key, asc, ascq, status, 2425 (stream_valid) ? stream_bits : 0, (intmax_t)resid, 2426 csio->dxfer_len)); 2427 } else { 2428 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 2429 ("Cam Status 0x%x\n", status)); 2430 } 2431 2432 switch (status) { 2433 case CAM_REQ_CMP: 2434 return (0); 2435 case CAM_SCSI_STATUS_ERROR: 2436 /* 2437 * If a read/write command, we handle it here. 2438 */ 2439 if (CCB_Type(csio) != SA_CCB_WAITING) { 2440 break; 2441 } 2442 /* 2443 * If this was just EOM/EOP, Filemark, Setmark or ILI detected 2444 * on a non read/write command, we assume it's not an error 2445 * and propagate the residule and return. 2446 */ 2447 if ((aqvalid && asc == 0 && ascq > 0 && ascq <= 5) || 2448 (aqvalid == 0 && sense_key == SSD_KEY_NO_SENSE)) { 2449 csio->resid = resid; 2450 QFRLS(ccb); 2451 return (0); 2452 } 2453 /* 2454 * Otherwise, we let the common code handle this. 2455 */ 2456 return (cam_periph_error(ccb, cflgs, sflgs, &softc->saved_ccb)); 2457 2458 /* 2459 * XXX: To Be Fixed 2460 * We cannot depend upon CAM honoring retry counts for these. 2461 */ 2462 case CAM_SCSI_BUS_RESET: 2463 case CAM_BDR_SENT: 2464 if (ccb->ccb_h.retry_count <= 0) { 2465 return (EIO); 2466 } 2467 /* FALLTHROUGH */ 2468 default: 2469 return (cam_periph_error(ccb, cflgs, sflgs, &softc->saved_ccb)); 2470 } 2471 2472 /* 2473 * Handle filemark, end of tape, mismatched record sizes.... 2474 * From this point out, we're only handling read/write cases. 2475 * Handle writes && reads differently. 2476 */ 2477 2478 if (csio->cdb_io.cdb_bytes[0] == SA_WRITE) { 2479 if (sense_key == SSD_KEY_VOLUME_OVERFLOW) { 2480 csio->resid = resid; 2481 error = ENOSPC; 2482 } else if ((stream_valid != 0) && (stream_bits & SSD_EOM)) { 2483 softc->flags |= SA_FLAG_EOM_PENDING; 2484 /* 2485 * Grotesque as it seems, the few times 2486 * I've actually seen a non-zero resid, 2487 * the tape drive actually lied and had 2488 * written all the data!. 2489 */ 2490 csio->resid = 0; 2491 } 2492 } else { 2493 csio->resid = resid; 2494 if (sense_key == SSD_KEY_BLANK_CHECK) { 2495 if (softc->quirks & SA_QUIRK_1FM) { 2496 error = 0; 2497 softc->flags |= SA_FLAG_EOM_PENDING; 2498 } else { 2499 error = EIO; 2500 } 2501 } else if ((stream_valid != 0) && (stream_bits & SSD_FILEMARK)){ 2502 if (softc->flags & SA_FLAG_FIXED) { 2503 error = -1; 2504 softc->flags |= SA_FLAG_EOF_PENDING; 2505 } 2506 /* 2507 * Unconditionally, if we detected a filemark on a read, 2508 * mark that we've run moved a file ahead. 2509 */ 2510 if (softc->fileno != (daddr_t) -1) { 2511 softc->fileno++; 2512 softc->blkno = 0; 2513 csio->ccb_h.ccb_pflags |= SA_POSITION_UPDATED; 2514 } 2515 } 2516 } 2517 2518 /* 2519 * Incorrect Length usually applies to read, but can apply to writes. 2520 */ 2521 if (error == 0 && (stream_valid != 0) && (stream_bits & SSD_ILI)) { 2522 if (info < 0) { 2523 xpt_print(csio->ccb_h.path, toobig, 2524 csio->dxfer_len - info); 2525 csio->resid = csio->dxfer_len; 2526 error = EIO; 2527 } else { 2528 csio->resid = resid; 2529 if (softc->flags & SA_FLAG_FIXED) { 2530 softc->flags |= SA_FLAG_EIO_PENDING; 2531 } 2532 /* 2533 * Bump the block number if we hadn't seen a filemark. 2534 * Do this independent of errors (we've moved anyway). 2535 */ 2536 if ((stream_valid == 0) || 2537 (stream_bits & SSD_FILEMARK) == 0) { 2538 if (softc->blkno != (daddr_t) -1) { 2539 softc->blkno++; 2540 csio->ccb_h.ccb_pflags |= 2541 SA_POSITION_UPDATED; 2542 } 2543 } 2544 } 2545 } 2546 2547 if (error <= 0) { 2548 /* 2549 * Unfreeze the queue if frozen as we're not returning anything 2550 * to our waiters that would indicate an I/O error has occurred 2551 * (yet). 2552 */ 2553 QFRLS(ccb); 2554 error = 0; 2555 } 2556 return (error); 2557} 2558 2559static int 2560sagetparams(struct cam_periph *periph, sa_params params_to_get, 2561 u_int32_t *blocksize, u_int8_t *density, u_int32_t *numblocks, 2562 int *buff_mode, u_int8_t *write_protect, u_int8_t *speed, 2563 int *comp_supported, int *comp_enabled, u_int32_t *comp_algorithm, 2564 sa_comp_t *tcs) 2565{ 2566 union ccb *ccb; 2567 void *mode_buffer; 2568 struct scsi_mode_header_6 *mode_hdr; 2569 struct scsi_mode_blk_desc *mode_blk; 2570 int mode_buffer_len; 2571 struct sa_softc *softc; 2572 u_int8_t cpage; 2573 int error; 2574 cam_status status; 2575 2576 softc = (struct sa_softc *)periph->softc; 2577 ccb = cam_periph_getccb(periph, 1); 2578 if (softc->quirks & SA_QUIRK_NO_CPAGE) 2579 cpage = SA_DEVICE_CONFIGURATION_PAGE; 2580 else 2581 cpage = SA_DATA_COMPRESSION_PAGE; 2582 2583retry: 2584 mode_buffer_len = sizeof(*mode_hdr) + sizeof(*mode_blk); 2585 2586 if (params_to_get & SA_PARAM_COMPRESSION) { 2587 if (softc->quirks & SA_QUIRK_NOCOMP) { 2588 *comp_supported = FALSE; 2589 params_to_get &= ~SA_PARAM_COMPRESSION; 2590 } else 2591 mode_buffer_len += sizeof (sa_comp_t); 2592 } 2593 2594 /* XXX Fix M_NOWAIT */ 2595 mode_buffer = malloc(mode_buffer_len, M_SCSISA, M_NOWAIT | M_ZERO); 2596 if (mode_buffer == NULL) { 2597 xpt_release_ccb(ccb); 2598 return (ENOMEM); 2599 } 2600 mode_hdr = (struct scsi_mode_header_6 *)mode_buffer; 2601 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 2602 2603 /* it is safe to retry this */ 2604 scsi_mode_sense(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 2605 SMS_PAGE_CTRL_CURRENT, (params_to_get & SA_PARAM_COMPRESSION) ? 2606 cpage : SMS_VENDOR_SPECIFIC_PAGE, mode_buffer, mode_buffer_len, 2607 SSD_FULL_SIZE, SCSIOP_TIMEOUT); 2608 2609 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2610 softc->device_stats); 2611 2612 status = ccb->ccb_h.status & CAM_STATUS_MASK; 2613 2614 if (error == EINVAL && (params_to_get & SA_PARAM_COMPRESSION) != 0) { 2615 /* 2616 * Hmm. Let's see if we can try another page... 2617 * If we've already done that, give up on compression 2618 * for this device and remember this for the future 2619 * and attempt the request without asking for compression 2620 * info. 2621 */ 2622 if (cpage == SA_DATA_COMPRESSION_PAGE) { 2623 cpage = SA_DEVICE_CONFIGURATION_PAGE; 2624 goto retry; 2625 } 2626 softc->quirks |= SA_QUIRK_NOCOMP; 2627 free(mode_buffer, M_SCSISA); 2628 goto retry; 2629 } else if (status == CAM_SCSI_STATUS_ERROR) { 2630 /* Tell the user about the fatal error. */ 2631 scsi_sense_print(&ccb->csio); 2632 goto sagetparamsexit; 2633 } 2634 2635 /* 2636 * If the user only wants the compression information, and 2637 * the device doesn't send back the block descriptor, it's 2638 * no big deal. If the user wants more than just 2639 * compression, though, and the device doesn't pass back the 2640 * block descriptor, we need to send another mode sense to 2641 * get the block descriptor. 2642 */ 2643 if ((mode_hdr->blk_desc_len == 0) && 2644 (params_to_get & SA_PARAM_COMPRESSION) && 2645 (params_to_get & ~(SA_PARAM_COMPRESSION))) { 2646 2647 /* 2648 * Decrease the mode buffer length by the size of 2649 * the compression page, to make sure the data 2650 * there doesn't get overwritten. 2651 */ 2652 mode_buffer_len -= sizeof (sa_comp_t); 2653 2654 /* 2655 * Now move the compression page that we presumably 2656 * got back down the memory chunk a little bit so 2657 * it doesn't get spammed. 2658 */ 2659 bcopy(&mode_hdr[0], &mode_hdr[1], sizeof (sa_comp_t)); 2660 bzero(&mode_hdr[0], sizeof (mode_hdr[0])); 2661 2662 /* 2663 * Now, we issue another mode sense and just ask 2664 * for the block descriptor, etc. 2665 */ 2666 2667 scsi_mode_sense(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 2668 SMS_PAGE_CTRL_CURRENT, SMS_VENDOR_SPECIFIC_PAGE, 2669 mode_buffer, mode_buffer_len, SSD_FULL_SIZE, 2670 SCSIOP_TIMEOUT); 2671 2672 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2673 softc->device_stats); 2674 2675 if (error != 0) 2676 goto sagetparamsexit; 2677 } 2678 2679 if (params_to_get & SA_PARAM_BLOCKSIZE) 2680 *blocksize = scsi_3btoul(mode_blk->blklen); 2681 2682 if (params_to_get & SA_PARAM_NUMBLOCKS) 2683 *numblocks = scsi_3btoul(mode_blk->nblocks); 2684 2685 if (params_to_get & SA_PARAM_BUFF_MODE) 2686 *buff_mode = mode_hdr->dev_spec & SMH_SA_BUF_MODE_MASK; 2687 2688 if (params_to_get & SA_PARAM_DENSITY) 2689 *density = mode_blk->density; 2690 2691 if (params_to_get & SA_PARAM_WP) 2692 *write_protect = (mode_hdr->dev_spec & SMH_SA_WP)? TRUE : FALSE; 2693 2694 if (params_to_get & SA_PARAM_SPEED) 2695 *speed = mode_hdr->dev_spec & SMH_SA_SPEED_MASK; 2696 2697 if (params_to_get & SA_PARAM_COMPRESSION) { 2698 sa_comp_t *ntcs = (sa_comp_t *) &mode_blk[1]; 2699 if (cpage == SA_DATA_COMPRESSION_PAGE) { 2700 struct scsi_data_compression_page *cp = &ntcs->dcomp; 2701 *comp_supported = 2702 (cp->dce_and_dcc & SA_DCP_DCC)? TRUE : FALSE; 2703 *comp_enabled = 2704 (cp->dce_and_dcc & SA_DCP_DCE)? TRUE : FALSE; 2705 *comp_algorithm = scsi_4btoul(cp->comp_algorithm); 2706 } else { 2707 struct scsi_dev_conf_page *cp = &ntcs->dconf; 2708 /* 2709 * We don't really know whether this device supports 2710 * Data Compression if the algorithm field is 2711 * zero. Just say we do. 2712 */ 2713 *comp_supported = TRUE; 2714 *comp_enabled = 2715 (cp->sel_comp_alg != SA_COMP_NONE)? TRUE : FALSE; 2716 *comp_algorithm = cp->sel_comp_alg; 2717 } 2718 if (tcs != NULL) 2719 bcopy(ntcs, tcs, sizeof (sa_comp_t)); 2720 } 2721 2722 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 2723 int idx; 2724 char *xyz = mode_buffer; 2725 xpt_print_path(periph->path); 2726 printf("Mode Sense Data="); 2727 for (idx = 0; idx < mode_buffer_len; idx++) 2728 printf(" 0x%02x", xyz[idx] & 0xff); 2729 printf("\n"); 2730 } 2731 2732sagetparamsexit: 2733 2734 xpt_release_ccb(ccb); 2735 free(mode_buffer, M_SCSISA); 2736 return (error); 2737} 2738 2739/* 2740 * The purpose of this function is to set one of four different parameters 2741 * for a tape drive: 2742 * - blocksize 2743 * - density 2744 * - compression / compression algorithm 2745 * - buffering mode 2746 * 2747 * The assumption is that this will be called from saioctl(), and therefore 2748 * from a process context. Thus the waiting malloc calls below. If that 2749 * assumption ever changes, the malloc calls should be changed to be 2750 * NOWAIT mallocs. 2751 * 2752 * Any or all of the four parameters may be set when this function is 2753 * called. It should handle setting more than one parameter at once. 2754 */ 2755static int 2756sasetparams(struct cam_periph *periph, sa_params params_to_set, 2757 u_int32_t blocksize, u_int8_t density, u_int32_t calg, 2758 u_int32_t sense_flags) 2759{ 2760 struct sa_softc *softc; 2761 u_int32_t current_blocksize; 2762 u_int32_t current_calg; 2763 u_int8_t current_density; 2764 u_int8_t current_speed; 2765 int comp_enabled, comp_supported; 2766 void *mode_buffer; 2767 int mode_buffer_len; 2768 struct scsi_mode_header_6 *mode_hdr; 2769 struct scsi_mode_blk_desc *mode_blk; 2770 sa_comp_t *ccomp, *cpage; 2771 int buff_mode; 2772 union ccb *ccb = NULL; 2773 int error; 2774 2775 softc = (struct sa_softc *)periph->softc; 2776 2777 ccomp = malloc(sizeof (sa_comp_t), M_SCSISA, M_NOWAIT); 2778 if (ccomp == NULL) 2779 return (ENOMEM); 2780 2781 /* 2782 * Since it doesn't make sense to set the number of blocks, or 2783 * write protection, we won't try to get the current value. We 2784 * always want to get the blocksize, so we can set it back to the 2785 * proper value. 2786 */ 2787 error = sagetparams(periph, 2788 params_to_set | SA_PARAM_BLOCKSIZE | SA_PARAM_SPEED, 2789 ¤t_blocksize, ¤t_density, NULL, &buff_mode, NULL, 2790 ¤t_speed, &comp_supported, &comp_enabled, 2791 ¤t_calg, ccomp); 2792 2793 if (error != 0) { 2794 free(ccomp, M_SCSISA); 2795 return (error); 2796 } 2797 2798 mode_buffer_len = sizeof(*mode_hdr) + sizeof(*mode_blk); 2799 if (params_to_set & SA_PARAM_COMPRESSION) 2800 mode_buffer_len += sizeof (sa_comp_t); 2801 2802 mode_buffer = malloc(mode_buffer_len, M_SCSISA, M_NOWAIT | M_ZERO); 2803 if (mode_buffer == NULL) { 2804 free(ccomp, M_SCSISA); 2805 return (ENOMEM); 2806 } 2807 2808 mode_hdr = (struct scsi_mode_header_6 *)mode_buffer; 2809 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 2810 2811 ccb = cam_periph_getccb(periph, 1); 2812 2813retry: 2814 2815 if (params_to_set & SA_PARAM_COMPRESSION) { 2816 if (mode_blk) { 2817 cpage = (sa_comp_t *)&mode_blk[1]; 2818 } else { 2819 cpage = (sa_comp_t *)&mode_hdr[1]; 2820 } 2821 bcopy(ccomp, cpage, sizeof (sa_comp_t)); 2822 cpage->hdr.pagecode &= ~0x80; 2823 } else 2824 cpage = NULL; 2825 2826 /* 2827 * If the caller wants us to set the blocksize, use the one they 2828 * pass in. Otherwise, use the blocksize we got back from the 2829 * mode select above. 2830 */ 2831 if (mode_blk) { 2832 if (params_to_set & SA_PARAM_BLOCKSIZE) 2833 scsi_ulto3b(blocksize, mode_blk->blklen); 2834 else 2835 scsi_ulto3b(current_blocksize, mode_blk->blklen); 2836 2837 /* 2838 * Set density if requested, else preserve old density. 2839 * SCSI_SAME_DENSITY only applies to SCSI-2 or better 2840 * devices, else density we've latched up in our softc. 2841 */ 2842 if (params_to_set & SA_PARAM_DENSITY) { 2843 mode_blk->density = density; 2844 } else if (softc->scsi_rev > SCSI_REV_CCS) { 2845 mode_blk->density = SCSI_SAME_DENSITY; 2846 } else { 2847 mode_blk->density = softc->media_density; 2848 } 2849 } 2850 2851 /* 2852 * For mode selects, these two fields must be zero. 2853 */ 2854 mode_hdr->data_length = 0; 2855 mode_hdr->medium_type = 0; 2856 2857 /* set the speed to the current value */ 2858 mode_hdr->dev_spec = current_speed; 2859 2860 /* if set, set single-initiator buffering mode */ 2861 if (softc->buffer_mode == SMH_SA_BUF_MODE_SIBUF) { 2862 mode_hdr->dev_spec |= SMH_SA_BUF_MODE_SIBUF; 2863 } 2864 2865 if (mode_blk) 2866 mode_hdr->blk_desc_len = sizeof(struct scsi_mode_blk_desc); 2867 else 2868 mode_hdr->blk_desc_len = 0; 2869 2870 /* 2871 * First, if the user wants us to set the compression algorithm or 2872 * just turn compression on, check to make sure that this drive 2873 * supports compression. 2874 */ 2875 if (params_to_set & SA_PARAM_COMPRESSION) { 2876 /* 2877 * If the compression algorithm is 0, disable compression. 2878 * If the compression algorithm is non-zero, enable 2879 * compression and set the compression type to the 2880 * specified compression algorithm, unless the algorithm is 2881 * MT_COMP_ENABLE. In that case, we look at the 2882 * compression algorithm that is currently set and if it is 2883 * non-zero, we leave it as-is. If it is zero, and we have 2884 * saved a compression algorithm from a time when 2885 * compression was enabled before, set the compression to 2886 * the saved value. 2887 */ 2888 switch (ccomp->hdr.pagecode & ~0x80) { 2889 case SA_DEVICE_CONFIGURATION_PAGE: 2890 { 2891 struct scsi_dev_conf_page *dcp = &cpage->dconf; 2892 if (calg == 0) { 2893 dcp->sel_comp_alg = SA_COMP_NONE; 2894 break; 2895 } 2896 if (calg != MT_COMP_ENABLE) { 2897 dcp->sel_comp_alg = calg; 2898 } else if (dcp->sel_comp_alg == SA_COMP_NONE && 2899 softc->saved_comp_algorithm != 0) { 2900 dcp->sel_comp_alg = softc->saved_comp_algorithm; 2901 } 2902 break; 2903 } 2904 case SA_DATA_COMPRESSION_PAGE: 2905 if (ccomp->dcomp.dce_and_dcc & SA_DCP_DCC) { 2906 struct scsi_data_compression_page *dcp = &cpage->dcomp; 2907 if (calg == 0) { 2908 /* 2909 * Disable compression, but leave the 2910 * decompression and the capability bit 2911 * alone. 2912 */ 2913 dcp->dce_and_dcc = SA_DCP_DCC; 2914 dcp->dde_and_red |= SA_DCP_DDE; 2915 break; 2916 } 2917 /* enable compression && decompression */ 2918 dcp->dce_and_dcc = SA_DCP_DCE | SA_DCP_DCC; 2919 dcp->dde_and_red |= SA_DCP_DDE; 2920 /* 2921 * If there, use compression algorithm from caller. 2922 * Otherwise, if there's a saved compression algorithm 2923 * and there is no current algorithm, use the saved 2924 * algorithm. Else parrot back what we got and hope 2925 * for the best. 2926 */ 2927 if (calg != MT_COMP_ENABLE) { 2928 scsi_ulto4b(calg, dcp->comp_algorithm); 2929 scsi_ulto4b(calg, dcp->decomp_algorithm); 2930 } else if (scsi_4btoul(dcp->comp_algorithm) == 0 && 2931 softc->saved_comp_algorithm != 0) { 2932 scsi_ulto4b(softc->saved_comp_algorithm, 2933 dcp->comp_algorithm); 2934 scsi_ulto4b(softc->saved_comp_algorithm, 2935 dcp->decomp_algorithm); 2936 } 2937 break; 2938 } 2939 /* 2940 * Compression does not appear to be supported- 2941 * at least via the DATA COMPRESSION page. It 2942 * would be too much to ask us to believe that 2943 * the page itself is supported, but incorrectly 2944 * reports an ability to manipulate data compression, 2945 * so we'll assume that this device doesn't support 2946 * compression. We can just fall through for that. 2947 */ 2948 /* FALLTHROUGH */ 2949 default: 2950 /* 2951 * The drive doesn't seem to support compression, 2952 * so turn off the set compression bit. 2953 */ 2954 params_to_set &= ~SA_PARAM_COMPRESSION; 2955 xpt_print(periph->path, 2956 "device does not seem to support compression\n"); 2957 2958 /* 2959 * If that was the only thing the user wanted us to set, 2960 * clean up allocated resources and return with 2961 * 'operation not supported'. 2962 */ 2963 if (params_to_set == SA_PARAM_NONE) { 2964 free(mode_buffer, M_SCSISA); 2965 xpt_release_ccb(ccb); 2966 return (ENODEV); 2967 } 2968 2969 /* 2970 * That wasn't the only thing the user wanted us to set. 2971 * So, decrease the stated mode buffer length by the 2972 * size of the compression mode page. 2973 */ 2974 mode_buffer_len -= sizeof(sa_comp_t); 2975 } 2976 } 2977 2978 /* It is safe to retry this operation */ 2979 scsi_mode_select(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, 2980 (params_to_set & SA_PARAM_COMPRESSION)? TRUE : FALSE, 2981 FALSE, mode_buffer, mode_buffer_len, SSD_FULL_SIZE, SCSIOP_TIMEOUT); 2982 2983 error = cam_periph_runccb(ccb, saerror, 0, 2984 sense_flags, softc->device_stats); 2985 2986 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 2987 int idx; 2988 char *xyz = mode_buffer; 2989 xpt_print_path(periph->path); 2990 printf("Err%d, Mode Select Data=", error); 2991 for (idx = 0; idx < mode_buffer_len; idx++) 2992 printf(" 0x%02x", xyz[idx] & 0xff); 2993 printf("\n"); 2994 } 2995 2996 2997 if (error) { 2998 /* 2999 * If we can, try without setting density/blocksize. 3000 */ 3001 if (mode_blk) { 3002 if ((params_to_set & 3003 (SA_PARAM_DENSITY|SA_PARAM_BLOCKSIZE)) == 0) { 3004 mode_blk = NULL; 3005 goto retry; 3006 } 3007 } else { 3008 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 3009 cpage = (sa_comp_t *)&mode_blk[1]; 3010 } 3011 3012 /* 3013 * If we were setting the blocksize, and that failed, we 3014 * want to set it to its original value. If we weren't 3015 * setting the blocksize, we don't want to change it. 3016 */ 3017 scsi_ulto3b(current_blocksize, mode_blk->blklen); 3018 3019 /* 3020 * Set density if requested, else preserve old density. 3021 * SCSI_SAME_DENSITY only applies to SCSI-2 or better 3022 * devices, else density we've latched up in our softc. 3023 */ 3024 if (params_to_set & SA_PARAM_DENSITY) { 3025 mode_blk->density = current_density; 3026 } else if (softc->scsi_rev > SCSI_REV_CCS) { 3027 mode_blk->density = SCSI_SAME_DENSITY; 3028 } else { 3029 mode_blk->density = softc->media_density; 3030 } 3031 3032 if (params_to_set & SA_PARAM_COMPRESSION) 3033 bcopy(ccomp, cpage, sizeof (sa_comp_t)); 3034 3035 /* 3036 * The retry count is the only CCB field that might have been 3037 * changed that we care about, so reset it back to 1. 3038 */ 3039 ccb->ccb_h.retry_count = 1; 3040 cam_periph_runccb(ccb, saerror, 0, sense_flags, 3041 softc->device_stats); 3042 } 3043 3044 xpt_release_ccb(ccb); 3045 3046 if (ccomp != NULL) 3047 free(ccomp, M_SCSISA); 3048 3049 if (params_to_set & SA_PARAM_COMPRESSION) { 3050 if (error) { 3051 softc->flags &= ~SA_FLAG_COMP_ENABLED; 3052 /* 3053 * Even if we get an error setting compression, 3054 * do not say that we don't support it. We could 3055 * have been wrong, or it may be media specific. 3056 * softc->flags &= ~SA_FLAG_COMP_SUPP; 3057 */ 3058 softc->saved_comp_algorithm = softc->comp_algorithm; 3059 softc->comp_algorithm = 0; 3060 } else { 3061 softc->flags |= SA_FLAG_COMP_ENABLED; 3062 softc->comp_algorithm = calg; 3063 } 3064 } 3065 3066 free(mode_buffer, M_SCSISA); 3067 return (error); 3068} 3069 3070static void 3071saprevent(struct cam_periph *periph, int action) 3072{ 3073 struct sa_softc *softc; 3074 union ccb *ccb; 3075 int error, sf; 3076 3077 softc = (struct sa_softc *)periph->softc; 3078 3079 if ((action == PR_ALLOW) && (softc->flags & SA_FLAG_TAPE_LOCKED) == 0) 3080 return; 3081 if ((action == PR_PREVENT) && (softc->flags & SA_FLAG_TAPE_LOCKED) != 0) 3082 return; 3083 3084 /* 3085 * We can be quiet about illegal requests. 3086 */ 3087 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 3088 sf = 0; 3089 } else 3090 sf = SF_QUIET_IR; 3091 3092 ccb = cam_periph_getccb(periph, 1); 3093 3094 /* It is safe to retry this operation */ 3095 scsi_prevent(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, action, 3096 SSD_FULL_SIZE, SCSIOP_TIMEOUT); 3097 3098 error = cam_periph_runccb(ccb, saerror, 0, sf, softc->device_stats); 3099 if (error == 0) { 3100 if (action == PR_ALLOW) 3101 softc->flags &= ~SA_FLAG_TAPE_LOCKED; 3102 else 3103 softc->flags |= SA_FLAG_TAPE_LOCKED; 3104 } 3105 3106 xpt_release_ccb(ccb); 3107} 3108 3109static int 3110sarewind(struct cam_periph *periph) 3111{ 3112 union ccb *ccb; 3113 struct sa_softc *softc; 3114 int error; 3115 3116 softc = (struct sa_softc *)periph->softc; 3117 3118 ccb = cam_periph_getccb(periph, 1); 3119 3120 /* It is safe to retry this operation */ 3121 scsi_rewind(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 3122 SSD_FULL_SIZE, REWIND_TIMEOUT); 3123 3124 softc->dsreg = MTIO_DSREG_REW; 3125 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3126 softc->dsreg = MTIO_DSREG_REST; 3127 3128 xpt_release_ccb(ccb); 3129 if (error == 0) 3130 softc->fileno = softc->blkno = (daddr_t) 0; 3131 else 3132 softc->fileno = softc->blkno = (daddr_t) -1; 3133 return (error); 3134} 3135 3136static int 3137saspace(struct cam_periph *periph, int count, scsi_space_code code) 3138{ 3139 union ccb *ccb; 3140 struct sa_softc *softc; 3141 int error; 3142 3143 softc = (struct sa_softc *)periph->softc; 3144 3145 ccb = cam_periph_getccb(periph, 1); 3146 3147 /* This cannot be retried */ 3148 3149 scsi_space(&ccb->csio, 0, sadone, MSG_SIMPLE_Q_TAG, code, count, 3150 SSD_FULL_SIZE, SPACE_TIMEOUT); 3151 3152 /* 3153 * Clear residual because we will be using it. 3154 */ 3155 softc->last_ctl_resid = 0; 3156 3157 softc->dsreg = (count < 0)? MTIO_DSREG_REV : MTIO_DSREG_FWD; 3158 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3159 softc->dsreg = MTIO_DSREG_REST; 3160 3161 xpt_release_ccb(ccb); 3162 3163 /* 3164 * If a spacing operation has failed, we need to invalidate 3165 * this mount. 3166 * 3167 * If the spacing operation was setmarks or to end of recorded data, 3168 * we no longer know our relative position. 3169 * 3170 * If the spacing operations was spacing files in reverse, we 3171 * take account of the residual, but still check against less 3172 * than zero- if we've gone negative, we must have hit BOT. 3173 * 3174 * If the spacing operations was spacing records in reverse and 3175 * we have a residual, we've either hit BOT or hit a filemark. 3176 * In the former case, we know our new record number (0). In 3177 * the latter case, we have absolutely no idea what the real 3178 * record number is- we've stopped between the end of the last 3179 * record in the previous file and the filemark that stopped 3180 * our spacing backwards. 3181 */ 3182 if (error) { 3183 softc->fileno = softc->blkno = (daddr_t) -1; 3184 } else if (code == SS_SETMARKS || code == SS_EOD) { 3185 softc->fileno = softc->blkno = (daddr_t) -1; 3186 } else if (code == SS_FILEMARKS && softc->fileno != (daddr_t) -1) { 3187 softc->fileno += (count - softc->last_ctl_resid); 3188 if (softc->fileno < 0) /* we must of hit BOT */ 3189 softc->fileno = 0; 3190 softc->blkno = 0; 3191 } else if (code == SS_BLOCKS && softc->blkno != (daddr_t) -1) { 3192 softc->blkno += (count - softc->last_ctl_resid); 3193 if (count < 0) { 3194 if (softc->last_ctl_resid || softc->blkno < 0) { 3195 if (softc->fileno == 0) { 3196 softc->blkno = 0; 3197 } else { 3198 softc->blkno = (daddr_t) -1; 3199 } 3200 } 3201 } 3202 } 3203 return (error); 3204} 3205 3206static int 3207sawritefilemarks(struct cam_periph *periph, int nmarks, int setmarks) 3208{ 3209 union ccb *ccb; 3210 struct sa_softc *softc; 3211 int error, nwm = 0; 3212 3213 softc = (struct sa_softc *)periph->softc; 3214 if (softc->open_rdonly) 3215 return (EBADF); 3216 3217 ccb = cam_periph_getccb(periph, 1); 3218 /* 3219 * Clear residual because we will be using it. 3220 */ 3221 softc->last_ctl_resid = 0; 3222 3223 softc->dsreg = MTIO_DSREG_FMK; 3224 /* this *must* not be retried */ 3225 scsi_write_filemarks(&ccb->csio, 0, sadone, MSG_SIMPLE_Q_TAG, 3226 FALSE, setmarks, nmarks, SSD_FULL_SIZE, IO_TIMEOUT); 3227 softc->dsreg = MTIO_DSREG_REST; 3228 3229 3230 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3231 3232 if (error == 0 && nmarks) { 3233 struct sa_softc *softc = (struct sa_softc *)periph->softc; 3234 nwm = nmarks - softc->last_ctl_resid; 3235 softc->filemarks += nwm; 3236 } 3237 3238 xpt_release_ccb(ccb); 3239 3240 /* 3241 * Update relative positions (if we're doing that). 3242 */ 3243 if (error) { 3244 softc->fileno = softc->blkno = (daddr_t) -1; 3245 } else if (softc->fileno != (daddr_t) -1) { 3246 softc->fileno += nwm; 3247 softc->blkno = 0; 3248 } 3249 return (error); 3250} 3251 3252static int 3253sardpos(struct cam_periph *periph, int hard, u_int32_t *blkptr) 3254{ 3255 struct scsi_tape_position_data loc; 3256 union ccb *ccb; 3257 struct sa_softc *softc = (struct sa_softc *)periph->softc; 3258 int error; 3259 3260 /* 3261 * We try and flush any buffered writes here if we were writing 3262 * and we're trying to get hardware block position. It eats 3263 * up performance substantially, but I'm wary of drive firmware. 3264 * 3265 * I think that *logical* block position is probably okay- 3266 * but hardware block position might have to wait for data 3267 * to hit media to be valid. Caveat Emptor. 3268 */ 3269 3270 if (hard && (softc->flags & SA_FLAG_TAPE_WRITTEN)) { 3271 error = sawritefilemarks(periph, 0, 0); 3272 if (error && error != EACCES) 3273 return (error); 3274 } 3275 3276 ccb = cam_periph_getccb(periph, 1); 3277 scsi_read_position(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, 3278 hard, &loc, SSD_FULL_SIZE, SCSIOP_TIMEOUT); 3279 softc->dsreg = MTIO_DSREG_RBSY; 3280 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3281 softc->dsreg = MTIO_DSREG_REST; 3282 3283 if (error == 0) { 3284 if (loc.flags & SA_RPOS_UNCERTAIN) { 3285 error = EINVAL; /* nothing is certain */ 3286 } else { 3287 *blkptr = scsi_4btoul(loc.firstblk); 3288 } 3289 } 3290 3291 xpt_release_ccb(ccb); 3292 return (error); 3293} 3294 3295static int 3296sasetpos(struct cam_periph *periph, int hard, u_int32_t *blkptr) 3297{ 3298 union ccb *ccb; 3299 struct sa_softc *softc; 3300 int error; 3301 3302 /* 3303 * We used to try and flush any buffered writes here. 3304 * Now we push this onto user applications to either 3305 * flush the pending writes themselves (via a zero count 3306 * WRITE FILEMARKS command) or they can trust their tape 3307 * drive to do this correctly for them. 3308 */ 3309 3310 softc = (struct sa_softc *)periph->softc; 3311 ccb = cam_periph_getccb(periph, 1); 3312 3313 3314 scsi_set_position(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, 3315 hard, *blkptr, SSD_FULL_SIZE, SPACE_TIMEOUT); 3316 3317 3318 softc->dsreg = MTIO_DSREG_POS; 3319 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3320 softc->dsreg = MTIO_DSREG_REST; 3321 xpt_release_ccb(ccb); 3322 /* 3323 * Note relative file && block number position as now unknown. 3324 */ 3325 softc->fileno = softc->blkno = (daddr_t) -1; 3326 return (error); 3327} 3328 3329static int 3330saretension(struct cam_periph *periph) 3331{ 3332 union ccb *ccb; 3333 struct sa_softc *softc; 3334 int error; 3335 3336 softc = (struct sa_softc *)periph->softc; 3337 3338 ccb = cam_periph_getccb(periph, 1); 3339 3340 /* It is safe to retry this operation */ 3341 scsi_load_unload(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 3342 FALSE, TRUE, TRUE, SSD_FULL_SIZE, ERASE_TIMEOUT); 3343 3344 softc->dsreg = MTIO_DSREG_TEN; 3345 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3346 softc->dsreg = MTIO_DSREG_REST; 3347 3348 xpt_release_ccb(ccb); 3349 if (error == 0) 3350 softc->fileno = softc->blkno = (daddr_t) 0; 3351 else 3352 softc->fileno = softc->blkno = (daddr_t) -1; 3353 return (error); 3354} 3355 3356static int 3357sareservereleaseunit(struct cam_periph *periph, int reserve) 3358{ 3359 union ccb *ccb; 3360 struct sa_softc *softc; 3361 int error; 3362 3363 softc = (struct sa_softc *)periph->softc; 3364 ccb = cam_periph_getccb(periph, 1); 3365 3366 /* It is safe to retry this operation */ 3367 scsi_reserve_release_unit(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, 3368 FALSE, 0, SSD_FULL_SIZE, SCSIOP_TIMEOUT, reserve); 3369 softc->dsreg = MTIO_DSREG_RBSY; 3370 error = cam_periph_runccb(ccb, saerror, 0, 3371 SF_RETRY_UA | SF_NO_PRINT, softc->device_stats); 3372 softc->dsreg = MTIO_DSREG_REST; 3373 xpt_release_ccb(ccb); 3374 3375 /* 3376 * If the error was Illegal Request, then the device doesn't support 3377 * RESERVE/RELEASE. This is not an error. 3378 */ 3379 if (error == EINVAL) { 3380 error = 0; 3381 } 3382 3383 return (error); 3384} 3385 3386static int 3387saloadunload(struct cam_periph *periph, int load) 3388{ 3389 union ccb *ccb; 3390 struct sa_softc *softc; 3391 int error; 3392 3393 softc = (struct sa_softc *)periph->softc; 3394 3395 ccb = cam_periph_getccb(periph, 1); 3396 3397 /* It is safe to retry this operation */ 3398 scsi_load_unload(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 3399 FALSE, FALSE, load, SSD_FULL_SIZE, REWIND_TIMEOUT); 3400 3401 softc->dsreg = (load)? MTIO_DSREG_LD : MTIO_DSREG_UNL; 3402 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3403 softc->dsreg = MTIO_DSREG_REST; 3404 xpt_release_ccb(ccb); 3405 3406 if (error || load == 0) 3407 softc->fileno = softc->blkno = (daddr_t) -1; 3408 else if (error == 0) 3409 softc->fileno = softc->blkno = (daddr_t) 0; 3410 return (error); 3411} 3412 3413static int 3414saerase(struct cam_periph *periph, int longerase) 3415{ 3416 3417 union ccb *ccb; 3418 struct sa_softc *softc; 3419 int error; 3420 3421 softc = (struct sa_softc *)periph->softc; 3422 if (softc->open_rdonly) 3423 return (EBADF); 3424 3425 ccb = cam_periph_getccb(periph, 1); 3426 3427 scsi_erase(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, FALSE, longerase, 3428 SSD_FULL_SIZE, ERASE_TIMEOUT); 3429 3430 softc->dsreg = MTIO_DSREG_ZER; 3431 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3432 softc->dsreg = MTIO_DSREG_REST; 3433 3434 xpt_release_ccb(ccb); 3435 return (error); 3436} 3437 3438#endif /* _KERNEL */ 3439 3440/* 3441 * Read tape block limits command. 3442 */ 3443void 3444scsi_read_block_limits(struct ccb_scsiio *csio, u_int32_t retries, 3445 void (*cbfcnp)(struct cam_periph *, union ccb *), 3446 u_int8_t tag_action, 3447 struct scsi_read_block_limits_data *rlimit_buf, 3448 u_int8_t sense_len, u_int32_t timeout) 3449{ 3450 struct scsi_read_block_limits *scsi_cmd; 3451 3452 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_IN, tag_action, 3453 (u_int8_t *)rlimit_buf, sizeof(*rlimit_buf), sense_len, 3454 sizeof(*scsi_cmd), timeout); 3455 3456 scsi_cmd = (struct scsi_read_block_limits *)&csio->cdb_io.cdb_bytes; 3457 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3458 scsi_cmd->opcode = READ_BLOCK_LIMITS; 3459} 3460 3461void 3462scsi_sa_read_write(struct ccb_scsiio *csio, u_int32_t retries, 3463 void (*cbfcnp)(struct cam_periph *, union ccb *), 3464 u_int8_t tag_action, int readop, int sli, 3465 int fixed, u_int32_t length, u_int8_t *data_ptr, 3466 u_int32_t dxfer_len, u_int8_t sense_len, u_int32_t timeout) 3467{ 3468 struct scsi_sa_rw *scsi_cmd; 3469 int read; 3470 3471 read = (readop & SCSI_RW_DIRMASK) == SCSI_RW_READ; 3472 3473 scsi_cmd = (struct scsi_sa_rw *)&csio->cdb_io.cdb_bytes; 3474 scsi_cmd->opcode = read ? SA_READ : SA_WRITE; 3475 scsi_cmd->sli_fixed = 0; 3476 if (sli && read) 3477 scsi_cmd->sli_fixed |= SAR_SLI; 3478 if (fixed) 3479 scsi_cmd->sli_fixed |= SARW_FIXED; 3480 scsi_ulto3b(length, scsi_cmd->length); 3481 scsi_cmd->control = 0; 3482 3483 cam_fill_csio(csio, retries, cbfcnp, (read ? CAM_DIR_IN : CAM_DIR_OUT) | 3484 ((readop & SCSI_RW_BIO) != 0 ? CAM_DATA_BIO : 0), 3485 tag_action, data_ptr, dxfer_len, sense_len, 3486 sizeof(*scsi_cmd), timeout); 3487} 3488 3489void 3490scsi_load_unload(struct ccb_scsiio *csio, u_int32_t retries, 3491 void (*cbfcnp)(struct cam_periph *, union ccb *), 3492 u_int8_t tag_action, int immediate, int eot, 3493 int reten, int load, u_int8_t sense_len, 3494 u_int32_t timeout) 3495{ 3496 struct scsi_load_unload *scsi_cmd; 3497 3498 scsi_cmd = (struct scsi_load_unload *)&csio->cdb_io.cdb_bytes; 3499 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3500 scsi_cmd->opcode = LOAD_UNLOAD; 3501 if (immediate) 3502 scsi_cmd->immediate = SLU_IMMED; 3503 if (eot) 3504 scsi_cmd->eot_reten_load |= SLU_EOT; 3505 if (reten) 3506 scsi_cmd->eot_reten_load |= SLU_RETEN; 3507 if (load) 3508 scsi_cmd->eot_reten_load |= SLU_LOAD; 3509 3510 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, 3511 NULL, 0, sense_len, sizeof(*scsi_cmd), timeout); 3512} 3513 3514void 3515scsi_rewind(struct ccb_scsiio *csio, u_int32_t retries, 3516 void (*cbfcnp)(struct cam_periph *, union ccb *), 3517 u_int8_t tag_action, int immediate, u_int8_t sense_len, 3518 u_int32_t timeout) 3519{ 3520 struct scsi_rewind *scsi_cmd; 3521 3522 scsi_cmd = (struct scsi_rewind *)&csio->cdb_io.cdb_bytes; 3523 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3524 scsi_cmd->opcode = REWIND; 3525 if (immediate) 3526 scsi_cmd->immediate = SREW_IMMED; 3527 3528 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3529 0, sense_len, sizeof(*scsi_cmd), timeout); 3530} 3531 3532void 3533scsi_space(struct ccb_scsiio *csio, u_int32_t retries, 3534 void (*cbfcnp)(struct cam_periph *, union ccb *), 3535 u_int8_t tag_action, scsi_space_code code, 3536 u_int32_t count, u_int8_t sense_len, u_int32_t timeout) 3537{ 3538 struct scsi_space *scsi_cmd; 3539 3540 scsi_cmd = (struct scsi_space *)&csio->cdb_io.cdb_bytes; 3541 scsi_cmd->opcode = SPACE; 3542 scsi_cmd->code = code; 3543 scsi_ulto3b(count, scsi_cmd->count); 3544 scsi_cmd->control = 0; 3545 3546 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3547 0, sense_len, sizeof(*scsi_cmd), timeout); 3548} 3549 3550void 3551scsi_write_filemarks(struct ccb_scsiio *csio, u_int32_t retries, 3552 void (*cbfcnp)(struct cam_periph *, union ccb *), 3553 u_int8_t tag_action, int immediate, int setmark, 3554 u_int32_t num_marks, u_int8_t sense_len, 3555 u_int32_t timeout) 3556{ 3557 struct scsi_write_filemarks *scsi_cmd; 3558 3559 scsi_cmd = (struct scsi_write_filemarks *)&csio->cdb_io.cdb_bytes; 3560 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3561 scsi_cmd->opcode = WRITE_FILEMARKS; 3562 if (immediate) 3563 scsi_cmd->byte2 |= SWFMRK_IMMED; 3564 if (setmark) 3565 scsi_cmd->byte2 |= SWFMRK_WSMK; 3566 3567 scsi_ulto3b(num_marks, scsi_cmd->num_marks); 3568 3569 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3570 0, sense_len, sizeof(*scsi_cmd), timeout); 3571} 3572 3573/* 3574 * The reserve and release unit commands differ only by their opcodes. 3575 */ 3576void 3577scsi_reserve_release_unit(struct ccb_scsiio *csio, u_int32_t retries, 3578 void (*cbfcnp)(struct cam_periph *, union ccb *), 3579 u_int8_t tag_action, int third_party, 3580 int third_party_id, u_int8_t sense_len, 3581 u_int32_t timeout, int reserve) 3582{ 3583 struct scsi_reserve_release_unit *scsi_cmd; 3584 3585 scsi_cmd = (struct scsi_reserve_release_unit *)&csio->cdb_io.cdb_bytes; 3586 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3587 3588 if (reserve) 3589 scsi_cmd->opcode = RESERVE_UNIT; 3590 else 3591 scsi_cmd->opcode = RELEASE_UNIT; 3592 3593 if (third_party) { 3594 scsi_cmd->lun_thirdparty |= SRRU_3RD_PARTY; 3595 scsi_cmd->lun_thirdparty |= 3596 ((third_party_id << SRRU_3RD_SHAMT) & SRRU_3RD_MASK); 3597 } 3598 3599 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3600 0, sense_len, sizeof(*scsi_cmd), timeout); 3601} 3602 3603void 3604scsi_erase(struct ccb_scsiio *csio, u_int32_t retries, 3605 void (*cbfcnp)(struct cam_periph *, union ccb *), 3606 u_int8_t tag_action, int immediate, int long_erase, 3607 u_int8_t sense_len, u_int32_t timeout) 3608{ 3609 struct scsi_erase *scsi_cmd; 3610 3611 scsi_cmd = (struct scsi_erase *)&csio->cdb_io.cdb_bytes; 3612 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3613 3614 scsi_cmd->opcode = ERASE; 3615 3616 if (immediate) 3617 scsi_cmd->lun_imm_long |= SE_IMMED; 3618 3619 if (long_erase) 3620 scsi_cmd->lun_imm_long |= SE_LONG; 3621 3622 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3623 0, sense_len, sizeof(*scsi_cmd), timeout); 3624} 3625 3626/* 3627 * Read Tape Position command. 3628 */ 3629void 3630scsi_read_position(struct ccb_scsiio *csio, u_int32_t retries, 3631 void (*cbfcnp)(struct cam_periph *, union ccb *), 3632 u_int8_t tag_action, int hardsoft, 3633 struct scsi_tape_position_data *sbp, 3634 u_int8_t sense_len, u_int32_t timeout) 3635{ 3636 struct scsi_tape_read_position *scmd; 3637 3638 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_IN, tag_action, 3639 (u_int8_t *)sbp, sizeof (*sbp), sense_len, sizeof(*scmd), timeout); 3640 scmd = (struct scsi_tape_read_position *)&csio->cdb_io.cdb_bytes; 3641 bzero(scmd, sizeof(*scmd)); 3642 scmd->opcode = READ_POSITION; 3643 scmd->byte1 = hardsoft; 3644} 3645 3646/* 3647 * Set Tape Position command. 3648 */ 3649void 3650scsi_set_position(struct ccb_scsiio *csio, u_int32_t retries, 3651 void (*cbfcnp)(struct cam_periph *, union ccb *), 3652 u_int8_t tag_action, int hardsoft, u_int32_t blkno, 3653 u_int8_t sense_len, u_int32_t timeout) 3654{ 3655 struct scsi_tape_locate *scmd; 3656 3657 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, 3658 (u_int8_t *)NULL, 0, sense_len, sizeof(*scmd), timeout); 3659 scmd = (struct scsi_tape_locate *)&csio->cdb_io.cdb_bytes; 3660 bzero(scmd, sizeof(*scmd)); 3661 scmd->opcode = LOCATE; 3662 if (hardsoft) 3663 scmd->byte1 |= SA_SPOS_BT; 3664 scsi_ulto4b(blkno, scmd->blkaddr); 3665} 3666