1 /* 2 * $FreeBSD: src/sys/cam/scsi/scsi_sa.c,v 1.45.2.13 2002/12/17 17:08:50 trhodes Exp $ 3 * $DragonFly: src/sys/bus/cam/scsi/scsi_sa.c,v 1.12 2004/05/19 22:52:38 dillon Exp $ 4 * 5 * Implementation of SCSI Sequential Access Peripheral driver for CAM. 6 * 7 * Copyright (c) 1999, 2000 Matthew Jacob 8 * All rights reserved. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions, and the following disclaimer, 15 * without modification, immediately at the beginning of the file. 16 * 2. The name of the author may not be used to endorse or promote products 17 * derived from this software without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR 23 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 * 31 */ 32 33 #include <sys/param.h> 34 #include <sys/queue.h> 35 #ifdef _KERNEL 36 #include <sys/systm.h> 37 #include <sys/kernel.h> 38 #endif 39 #include <sys/types.h> 40 #ifdef _KERNEL 41 #include <sys/buf.h> 42 #include <sys/malloc.h> 43 #endif 44 #include <sys/mtio.h> 45 #include <sys/conf.h> 46 #ifdef _KERNEL 47 #include <sys/proc.h> 48 #include <sys/buf2.h> 49 #endif 50 #include <sys/devicestat.h> 51 #include <machine/limits.h> 52 53 #ifndef _KERNEL 54 #include <stdio.h> 55 #include <string.h> 56 #endif 57 58 #include "../cam.h" 59 #include "../cam_ccb.h" 60 #include "../cam_extend.h" 61 #include "../cam_periph.h" 62 #include "../cam_xpt_periph.h" 63 #include "../cam_debug.h" 64 65 #include "scsi_all.h" 66 #include "scsi_message.h" 67 #include "scsi_sa.h" 68 69 #ifdef _KERNEL 70 71 #include <opt_sa.h> 72 73 #ifndef SA_IO_TIMEOUT 74 #define SA_IO_TIMEOUT 4 75 #endif 76 #ifndef SA_SPACE_TIMEOUT 77 #define SA_SPACE_TIMEOUT 1 * 60 78 #endif 79 #ifndef SA_REWIND_TIMEOUT 80 #define SA_REWIND_TIMEOUT 2 * 60 81 #endif 82 #ifndef SA_ERASE_TIMEOUT 83 #define SA_ERASE_TIMEOUT 4 * 60 84 #endif 85 86 #define SCSIOP_TIMEOUT (60 * 1000) /* not an option */ 87 88 #define IO_TIMEOUT (SA_IO_TIMEOUT * 60 * 1000) 89 #define REWIND_TIMEOUT (SA_REWIND_TIMEOUT * 60 * 1000) 90 #define ERASE_TIMEOUT (SA_ERASE_TIMEOUT * 60 * 1000) 91 #define SPACE_TIMEOUT (SA_SPACE_TIMEOUT * 60 * 1000) 92 93 /* 94 * Additional options that can be set for config: SA_1FM_AT_EOT 95 */ 96 97 #ifndef UNUSED_PARAMETER 98 #define UNUSED_PARAMETER(x) x = x 99 #endif 100 101 #define QFRLS(ccb) \ 102 if (((ccb)->ccb_h.status & CAM_DEV_QFRZN) != 0) \ 103 cam_release_devq((ccb)->ccb_h.path, 0, 0, 0, FALSE) 104 105 /* 106 * Driver states 107 */ 108 109 110 typedef enum { 111 SA_STATE_NORMAL, SA_STATE_ABNORMAL 112 } sa_state; 113 114 #define ccb_pflags ppriv_field0 115 #define ccb_bp ppriv_ptr1 116 117 #define SA_CCB_BUFFER_IO 0x0 118 #define SA_CCB_WAITING 0x1 119 #define SA_CCB_TYPEMASK 0x1 120 #define SA_POSITION_UPDATED 0x2 121 122 #define Set_CCB_Type(x, type) \ 123 x->ccb_h.ccb_pflags &= ~SA_CCB_TYPEMASK; \ 124 x->ccb_h.ccb_pflags |= type 125 126 #define CCB_Type(x) (x->ccb_h.ccb_pflags & SA_CCB_TYPEMASK) 127 128 129 130 typedef enum { 131 SA_FLAG_OPEN = 0x0001, 132 SA_FLAG_FIXED = 0x0002, 133 SA_FLAG_TAPE_LOCKED = 0x0004, 134 SA_FLAG_TAPE_MOUNTED = 0x0008, 135 SA_FLAG_TAPE_WP = 0x0010, 136 SA_FLAG_TAPE_WRITTEN = 0x0020, 137 SA_FLAG_EOM_PENDING = 0x0040, 138 SA_FLAG_EIO_PENDING = 0x0080, 139 SA_FLAG_EOF_PENDING = 0x0100, 140 SA_FLAG_ERR_PENDING = (SA_FLAG_EOM_PENDING|SA_FLAG_EIO_PENDING| 141 SA_FLAG_EOF_PENDING), 142 SA_FLAG_INVALID = 0x0200, 143 SA_FLAG_COMP_ENABLED = 0x0400, 144 SA_FLAG_COMP_SUPP = 0x0800, 145 SA_FLAG_COMP_UNSUPP = 0x1000, 146 SA_FLAG_TAPE_FROZEN = 0x2000 147 } sa_flags; 148 149 typedef enum { 150 SA_MODE_REWIND = 0x00, 151 SA_MODE_NOREWIND = 0x01, 152 SA_MODE_OFFLINE = 0x02 153 } sa_mode; 154 155 typedef enum { 156 SA_PARAM_NONE = 0x00, 157 SA_PARAM_BLOCKSIZE = 0x01, 158 SA_PARAM_DENSITY = 0x02, 159 SA_PARAM_COMPRESSION = 0x04, 160 SA_PARAM_BUFF_MODE = 0x08, 161 SA_PARAM_NUMBLOCKS = 0x10, 162 SA_PARAM_WP = 0x20, 163 SA_PARAM_SPEED = 0x40, 164 SA_PARAM_ALL = 0x7f 165 } sa_params; 166 167 typedef enum { 168 SA_QUIRK_NONE = 0x00, 169 SA_QUIRK_NOCOMP = 0x01, /* Can't deal with compression at all */ 170 SA_QUIRK_FIXED = 0x02, /* Force fixed mode */ 171 SA_QUIRK_VARIABLE = 0x04, /* Force variable mode */ 172 SA_QUIRK_2FM = 0x08, /* Needs Two File Marks at EOD */ 173 SA_QUIRK_1FM = 0x10, /* No more than 1 File Mark at EOD */ 174 SA_QUIRK_NODREAD = 0x20, /* Don't try and dummy read density */ 175 SA_QUIRK_NO_MODESEL = 0x40, /* Don't do mode select at all */ 176 SA_QUIRK_NO_CPAGE = 0x80 /* Don't use DEVICE COMPRESSION page */ 177 } sa_quirks; 178 179 /* units are bits 4-7, 16-21 (1024 units) */ 180 #define SAUNIT(DEV) \ 181 (((minor(DEV) & 0xF0) >> 4) | ((minor(DEV) & 0x3f0000) >> 16)) 182 183 #define SAMODE(z) ((minor(z) & 0x3)) 184 #define SADENSITY(z) (((minor(z) >> 2) & 0x3)) 185 #define SA_IS_CTRL(z) (minor(z) & (1 << 29)) 186 187 #define SA_NOT_CTLDEV 0 188 #define SA_CTLDEV 1 189 190 #define SA_ATYPE_R 0 191 #define SA_ATYPE_NR 1 192 #define SA_ATYPE_ER 2 193 194 #define SAMINOR(ctl, unit, mode, access) \ 195 ((ctl << 29) | ((unit & 0x3f0) << 16) | ((unit & 0xf) << 4) | \ 196 (mode << 0x2) | (access & 0x3)) 197 198 #define SA_UNITMASK SAMINOR(0, -1, 0, 0) 199 #define SA_UNIT(unit) SAMINOR(0, unit, 0, 0) 200 201 #define SA_NUM_MODES 4 202 203 struct sa_softc { 204 sa_state state; 205 sa_flags flags; 206 sa_quirks quirks; 207 struct buf_queue_head buf_queue; 208 int queue_count; 209 struct devstat device_stats; 210 int blk_gran; 211 int blk_mask; 212 int blk_shift; 213 u_int32_t max_blk; 214 u_int32_t min_blk; 215 u_int32_t comp_algorithm; 216 u_int32_t saved_comp_algorithm; 217 u_int32_t media_blksize; 218 u_int32_t last_media_blksize; 219 u_int32_t media_numblks; 220 u_int8_t media_density; 221 u_int8_t speed; 222 u_int8_t scsi_rev; 223 u_int8_t dsreg; /* mtio mt_dsreg, redux */ 224 int buffer_mode; 225 int filemarks; 226 union ccb saved_ccb; 227 int last_resid_was_io; 228 229 /* 230 * Relative to BOT Location. 231 */ 232 daddr_t fileno; 233 daddr_t blkno; 234 235 /* 236 * Latched Error Info 237 */ 238 struct { 239 struct scsi_sense_data _last_io_sense; 240 u_int32_t _last_io_resid; 241 u_int8_t _last_io_cdb[CAM_MAX_CDBLEN]; 242 struct scsi_sense_data _last_ctl_sense; 243 u_int32_t _last_ctl_resid; 244 u_int8_t _last_ctl_cdb[CAM_MAX_CDBLEN]; 245 #define last_io_sense errinfo._last_io_sense 246 #define last_io_resid errinfo._last_io_resid 247 #define last_io_cdb errinfo._last_io_cdb 248 #define last_ctl_sense errinfo._last_ctl_sense 249 #define last_ctl_resid errinfo._last_ctl_resid 250 #define last_ctl_cdb errinfo._last_ctl_cdb 251 } errinfo; 252 /* 253 * Misc other flags/state 254 */ 255 u_int32_t 256 : 31, 257 ctrl_mode : 1; /* control device open */ 258 }; 259 260 struct sa_quirk_entry { 261 struct scsi_inquiry_pattern inq_pat; /* matching pattern */ 262 sa_quirks quirks; /* specific quirk type */ 263 u_int32_t prefblk; /* preferred blocksize when in fixed mode */ 264 }; 265 266 static struct sa_quirk_entry sa_quirk_table[] = 267 { 268 { 269 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "OnStream", 270 "ADR*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_NODREAD | 271 SA_QUIRK_1FM|SA_QUIRK_NO_MODESEL, 32768 272 }, 273 { 274 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 275 "Python 06408*", "*"}, SA_QUIRK_NODREAD, 0 276 }, 277 { 278 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 279 "Python 25601*", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_NODREAD, 0 280 }, 281 { 282 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 283 "Python*", "*"}, SA_QUIRK_NODREAD, 0 284 }, 285 { 286 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 287 "VIPER 150*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 288 }, 289 { 290 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 291 "VIPER 2525 25462", "-011"}, 292 SA_QUIRK_NOCOMP|SA_QUIRK_1FM|SA_QUIRK_NODREAD, 0 293 }, 294 { 295 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 296 "VIPER 2525*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 1024 297 }, 298 #if 0 299 { 300 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 301 "C15*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_NO_CPAGE, 0, 302 }, 303 #endif 304 { 305 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 306 "C56*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 307 }, 308 { 309 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 310 "T20*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 311 }, 312 { 313 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 314 "T4000*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 315 }, 316 { 317 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 318 "HP-88780*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 319 }, 320 { 321 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "KENNEDY", 322 "*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 323 }, 324 { 325 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "M4 DATA", 326 "123107 SCSI*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 327 }, 328 { /* jreynold@primenet.com */ 329 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "Seagate", 330 "STT8000N*", "*"}, SA_QUIRK_1FM, 0 331 }, 332 { /* mike@sentex.net */ 333 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "Seagate", 334 "STT20000*", "*"}, SA_QUIRK_1FM, 0 335 }, 336 { 337 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 338 " TDC 3600", "U07:"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 339 }, 340 { 341 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 342 " TDC 3800", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 343 }, 344 { 345 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 346 " TDC 4100", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 347 }, 348 { 349 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 350 " TDC 4200", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 351 }, 352 { 353 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 354 " SLR*", "*"}, SA_QUIRK_1FM, 0 355 }, 356 { 357 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "WANGTEK", 358 "5525ES*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 359 }, 360 { 361 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "WANGTEK", 362 "51000*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 1024 363 } 364 }; 365 366 static d_open_t saopen; 367 static d_close_t saclose; 368 static d_strategy_t sastrategy; 369 static d_ioctl_t saioctl; 370 static periph_init_t sainit; 371 static periph_ctor_t saregister; 372 static periph_oninv_t saoninvalidate; 373 static periph_dtor_t sacleanup; 374 static periph_start_t sastart; 375 static void saasync(void *callback_arg, u_int32_t code, 376 struct cam_path *path, void *arg); 377 static void sadone(struct cam_periph *periph, 378 union ccb *start_ccb); 379 static int saerror(union ccb *ccb, u_int32_t cam_flags, 380 u_int32_t sense_flags); 381 static int samarkswanted(struct cam_periph *); 382 static int sacheckeod(struct cam_periph *periph); 383 static int sagetparams(struct cam_periph *periph, 384 sa_params params_to_get, 385 u_int32_t *blocksize, u_int8_t *density, 386 u_int32_t *numblocks, int *buff_mode, 387 u_int8_t *write_protect, u_int8_t *speed, 388 int *comp_supported, int *comp_enabled, 389 u_int32_t *comp_algorithm, 390 sa_comp_t *comp_page); 391 static int sasetparams(struct cam_periph *periph, 392 sa_params params_to_set, 393 u_int32_t blocksize, u_int8_t density, 394 u_int32_t comp_algorithm, 395 u_int32_t sense_flags); 396 static void saprevent(struct cam_periph *periph, int action); 397 static int sarewind(struct cam_periph *periph); 398 static int saspace(struct cam_periph *periph, int count, 399 scsi_space_code code); 400 static int samount(struct cam_periph *, int, dev_t); 401 static int saretension(struct cam_periph *periph); 402 static int sareservereleaseunit(struct cam_periph *periph, 403 int reserve); 404 static int saloadunload(struct cam_periph *periph, int load); 405 static int saerase(struct cam_periph *periph, int longerase); 406 static int sawritefilemarks(struct cam_periph *periph, 407 int nmarks, int setmarks); 408 static int sardpos(struct cam_periph *periph, int, u_int32_t *); 409 static int sasetpos(struct cam_periph *periph, int, u_int32_t *); 410 411 412 static struct periph_driver sadriver = 413 { 414 sainit, "sa", 415 TAILQ_HEAD_INITIALIZER(sadriver.units), /* generation */ 0 416 }; 417 418 DATA_SET(periphdriver_set, sadriver); 419 420 /* For 2.2-stable support */ 421 #ifndef D_TAPE 422 #define D_TAPE 0 423 #endif 424 425 #define SA_CDEV_MAJOR 14 426 427 static struct cdevsw sa_cdevsw = { 428 /* name */ "sa", 429 /* maj */ SA_CDEV_MAJOR, 430 /* flags */ D_TAPE, 431 /* port */ NULL, 432 /* clone */ NULL, 433 434 /* open */ saopen, 435 /* close */ saclose, 436 /* read */ physread, 437 /* write */ physwrite, 438 /* ioctl */ saioctl, 439 /* poll */ nopoll, 440 /* mmap */ nommap, 441 /* strategy */ sastrategy, 442 /* dump */ nodump, 443 /* psize */ nopsize 444 }; 445 446 static struct extend_array *saperiphs; 447 448 static int 449 saopen(dev_t dev, int flags, int fmt, struct thread *td) 450 { 451 struct cam_periph *periph; 452 struct sa_softc *softc; 453 int unit; 454 int mode; 455 int density; 456 int error; 457 int s; 458 459 unit = SAUNIT(dev); 460 mode = SAMODE(dev); 461 density = SADENSITY(dev); 462 463 s = splsoftcam(); 464 periph = cam_extend_get(saperiphs, unit); 465 if (periph == NULL) { 466 (void) splx(s); 467 return (ENXIO); 468 } 469 softc = (struct sa_softc *)periph->softc; 470 if ((error = cam_periph_lock(periph, PCATCH)) != 0) { 471 splx(s); 472 return (error); 473 } 474 splx(s); 475 476 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE|CAM_DEBUG_INFO, 477 ("saopen(%d): dev=0x%x softc=0x%x\n", unit, unit, softc->flags)); 478 479 if (cam_periph_acquire(periph) != CAM_REQ_CMP) { 480 cam_periph_unlock(periph); 481 return (ENXIO); 482 } 483 if (SA_IS_CTRL(dev)) { 484 softc->ctrl_mode = 1; 485 cam_periph_unlock(periph); 486 return (0); 487 } 488 489 490 if (softc->flags & SA_FLAG_OPEN) { 491 error = EBUSY; 492 } else if (softc->flags & SA_FLAG_INVALID) { 493 error = ENXIO; 494 } else { 495 /* 496 * The function samount ensures media is loaded and ready. 497 * It also does a device RESERVE if the tape isn't yet mounted. 498 */ 499 error = samount(periph, flags, dev); 500 } 501 502 if (error) { 503 cam_periph_release(periph); 504 } else { 505 saprevent(periph, PR_PREVENT); 506 softc->flags |= SA_FLAG_OPEN; 507 } 508 cam_periph_unlock(periph); 509 return (error); 510 } 511 512 static int 513 saclose(dev_t dev, int flag, int fmt, struct thread *td) 514 { 515 struct cam_periph *periph; 516 struct sa_softc *softc; 517 int unit, mode, error, writing, tmp; 518 int closedbits = SA_FLAG_OPEN; 519 520 unit = SAUNIT(dev); 521 mode = SAMODE(dev); 522 periph = cam_extend_get(saperiphs, unit); 523 if (periph == NULL) 524 return (ENXIO); 525 526 softc = (struct sa_softc *)periph->softc; 527 528 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE|CAM_DEBUG_INFO, 529 ("saclose(%d): dev=0x%x softc=0x%x\n", unit, unit, softc->flags)); 530 531 532 if ((error = cam_periph_lock(periph, 0)) != 0) { 533 return (error); 534 } 535 536 if (SA_IS_CTRL(dev)) { 537 softc->ctrl_mode = 0; 538 cam_periph_release(periph); 539 cam_periph_unlock(periph); 540 return (0); 541 } 542 543 /* 544 * Were we writing the tape? 545 */ 546 writing = (softc->flags & SA_FLAG_TAPE_WRITTEN) != 0; 547 548 /* 549 * See whether or not we need to write filemarks. If this 550 * fails, we probably have to assume we've lost tape 551 * position. 552 */ 553 error = sacheckeod(periph); 554 if (error) { 555 xpt_print_path(periph->path); 556 printf("failed to write terminating filemark(s)\n"); 557 softc->flags |= SA_FLAG_TAPE_FROZEN; 558 } 559 560 /* 561 * Whatever we end up doing, allow users to eject tapes from here on. 562 */ 563 saprevent(periph, PR_ALLOW); 564 565 /* 566 * Decide how to end... 567 */ 568 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) { 569 closedbits |= SA_FLAG_TAPE_FROZEN; 570 } else switch (mode) { 571 case SA_MODE_OFFLINE: 572 /* 573 * An 'offline' close is an unconditional release of 574 * frozen && mount conditions, irrespective of whether 575 * these operations succeeded. The reason for this is 576 * to allow at least some kind of programmatic way 577 * around our state getting all fouled up. If somebody 578 * issues an 'offline' command, that will be allowed 579 * to clear state. 580 */ 581 (void) sarewind(periph); 582 (void) saloadunload(periph, FALSE); 583 closedbits |= SA_FLAG_TAPE_MOUNTED|SA_FLAG_TAPE_FROZEN; 584 break; 585 case SA_MODE_REWIND: 586 /* 587 * If the rewind fails, return an error- if anyone cares, 588 * but not overwriting any previous error. 589 * 590 * We don't clear the notion of mounted here, but we do 591 * clear the notion of frozen if we successfully rewound. 592 */ 593 tmp = sarewind(periph); 594 if (tmp) { 595 if (error != 0) 596 error = tmp; 597 } else { 598 closedbits |= SA_FLAG_TAPE_FROZEN; 599 } 600 break; 601 case SA_MODE_NOREWIND: 602 /* 603 * If we're not rewinding/unloading the tape, find out 604 * whether we need to back up over one of two filemarks 605 * we wrote (if we wrote two filemarks) so that appends 606 * from this point on will be sane. 607 */ 608 if (error == 0 && writing && (softc->quirks & SA_QUIRK_2FM)) { 609 tmp = saspace(periph, -1, SS_FILEMARKS); 610 if (tmp) { 611 xpt_print_path(periph->path); 612 printf("unable to backspace over one of double" 613 " filemarks at end of tape\n"); 614 xpt_print_path(periph->path); 615 printf("it is possible that this device" 616 " needs a SA_QUIRK_1FM quirk set for it\n"); 617 softc->flags |= SA_FLAG_TAPE_FROZEN; 618 } 619 } 620 break; 621 default: 622 xpt_print_path(periph->path); 623 panic("unknown mode 0x%x in saclose\n", mode); 624 /* NOTREACHED */ 625 break; 626 } 627 628 /* 629 * We wish to note here that there are no more filemarks to be written. 630 */ 631 softc->filemarks = 0; 632 softc->flags &= ~SA_FLAG_TAPE_WRITTEN; 633 634 /* 635 * And we are no longer open for business. 636 */ 637 softc->flags &= ~closedbits; 638 639 /* 640 * Inform users if tape state if frozen.... 641 */ 642 if (softc->flags & SA_FLAG_TAPE_FROZEN) { 643 xpt_print_path(periph->path); 644 printf("tape is now frozen- use an OFFLINE, REWIND or MTEOM " 645 "command to clear this state.\n"); 646 } 647 648 /* release the device if it is no longer mounted */ 649 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) 650 sareservereleaseunit(periph, FALSE); 651 652 cam_periph_unlock(periph); 653 cam_periph_release(periph); 654 655 return (error); 656 } 657 658 /* 659 * Actually translate the requested transfer into one the physical driver 660 * can understand. The transfer is described by a buf and will include 661 * only one physical transfer. 662 */ 663 static void 664 sastrategy(struct buf *bp) 665 { 666 struct cam_periph *periph; 667 struct sa_softc *softc; 668 u_int unit; 669 int s; 670 671 if (SA_IS_CTRL(bp->b_dev)) { 672 bp->b_error = EINVAL; 673 goto bad; 674 } 675 unit = SAUNIT(bp->b_dev); 676 periph = cam_extend_get(saperiphs, unit); 677 if (periph == NULL) { 678 bp->b_error = ENXIO; 679 goto bad; 680 } 681 softc = (struct sa_softc *)periph->softc; 682 683 s = splsoftcam(); 684 685 if (softc->flags & SA_FLAG_INVALID) { 686 splx(s); 687 bp->b_error = ENXIO; 688 goto bad; 689 } 690 691 if (softc->flags & SA_FLAG_TAPE_FROZEN) { 692 splx(s); 693 bp->b_error = EPERM; 694 goto bad; 695 } 696 697 splx(s); 698 699 /* 700 * If it's a null transfer, return immediatly 701 */ 702 if (bp->b_bcount == 0) 703 goto done; 704 705 /* valid request? */ 706 if (softc->flags & SA_FLAG_FIXED) { 707 /* 708 * Fixed block device. The byte count must 709 * be a multiple of our block size. 710 */ 711 if (((softc->blk_mask != ~0) && 712 ((bp->b_bcount & softc->blk_mask) != 0)) || 713 ((softc->blk_mask == ~0) && 714 ((bp->b_bcount % softc->min_blk) != 0))) { 715 xpt_print_path(periph->path); 716 printf("Invalid request. Fixed block device " 717 "requests must be a multiple " 718 "of %d bytes\n", softc->media_blksize); 719 bp->b_error = EINVAL; 720 goto bad; 721 } 722 } else if ((bp->b_bcount > softc->max_blk) || 723 (bp->b_bcount < softc->min_blk) || 724 (bp->b_bcount & softc->blk_mask) != 0) { 725 726 xpt_print_path(periph->path); 727 printf("Invalid request. Variable block device " 728 "requests must be "); 729 if (softc->blk_mask != 0) { 730 printf("a multiple of %d ", (0x1 << softc->blk_gran)); 731 } 732 printf("between %d and %d bytes\n", softc->min_blk, 733 softc->max_blk); 734 bp->b_error = EINVAL; 735 goto bad; 736 } 737 738 /* 739 * Mask interrupts so that the device cannot be invalidated until 740 * after we are in the queue. Otherwise, we might not properly 741 * clean up one of the buffers. 742 */ 743 s = splbio(); 744 745 /* 746 * Place it at the end of the queue. 747 */ 748 bufq_insert_tail(&softc->buf_queue, bp); 749 750 softc->queue_count++; 751 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("sastrategy: enqueuing a %d " 752 "%s byte %s queue count now %d\n", (int) bp->b_bcount, 753 (softc->flags & SA_FLAG_FIXED)? "fixed" : "variable", 754 (bp->b_flags & B_READ)? "read" : "write", softc->queue_count)); 755 756 splx(s); 757 758 /* 759 * Schedule ourselves for performing the work. 760 */ 761 xpt_schedule(periph, 1); 762 763 return; 764 bad: 765 bp->b_flags |= B_ERROR; 766 done: 767 768 /* 769 * Correctly set the buf to indicate a completed xfer 770 */ 771 bp->b_resid = bp->b_bcount; 772 biodone(bp); 773 } 774 775 static int 776 saioctl(dev_t dev, u_long cmd, caddr_t arg, int flag, struct thread *td) 777 { 778 struct cam_periph *periph; 779 struct sa_softc *softc; 780 scsi_space_code spaceop; 781 int didlockperiph = 0; 782 int s; 783 int unit; 784 int mode; 785 int density; 786 int error = 0; 787 788 unit = SAUNIT(dev); 789 mode = SAMODE(dev); 790 density = SADENSITY(dev); 791 error = 0; /* shut up gcc */ 792 spaceop = 0; /* shut up gcc */ 793 794 periph = cam_extend_get(saperiphs, unit); 795 if (periph == NULL) 796 return (ENXIO); 797 798 softc = (struct sa_softc *)periph->softc; 799 800 /* 801 * Check for control mode accesses. We allow MTIOCGET and 802 * MTIOCERRSTAT (but need to be the only one open in order 803 * to clear latched status), and MTSETBSIZE, MTSETDNSTY 804 * and MTCOMP (but need to be the only one accessing this 805 * device to run those). 806 */ 807 808 if (SA_IS_CTRL(dev)) { 809 switch (cmd) { 810 case MTIOCGETEOTMODEL: 811 case MTIOCGET: 812 break; 813 case MTIOCERRSTAT: 814 /* 815 * If the periph isn't already locked, lock it 816 * so our MTIOCERRSTAT can reset latched error stats. 817 * 818 * If the periph is already locked, skip it because 819 * we're just getting status and it'll be up to the 820 * other thread that has this device open to do 821 * an MTIOCERRSTAT that would clear latched status. 822 */ 823 s = splsoftcam(); 824 if ((periph->flags & CAM_PERIPH_LOCKED) == 0) { 825 error = cam_periph_lock(periph, PCATCH); 826 if (error != 0) { 827 splx(s); 828 return (error); 829 } 830 didlockperiph = 1; 831 } 832 break; 833 834 case MTIOCSETEOTMODEL: 835 case MTSETBSIZ: 836 case MTSETDNSTY: 837 case MTCOMP: 838 /* 839 * We need to acquire the peripheral here rather 840 * than at open time because we are sharing writable 841 * access to data structures. 842 */ 843 s = splsoftcam(); 844 error = cam_periph_lock(periph, PCATCH); 845 if (error != 0) { 846 splx(s); 847 return (error); 848 } 849 didlockperiph = 1; 850 break; 851 852 default: 853 return (EINVAL); 854 } 855 } 856 857 /* 858 * Find the device that the user is talking about 859 */ 860 switch (cmd) { 861 case MTIOCGET: 862 { 863 struct mtget *g = (struct mtget *)arg; 864 865 /* 866 * If this isn't the control mode device, actually go out 867 * and ask the drive again what it's set to. 868 */ 869 if (!SA_IS_CTRL(dev)) { 870 u_int8_t write_protect; 871 int comp_enabled, comp_supported; 872 error = sagetparams(periph, SA_PARAM_ALL, 873 &softc->media_blksize, &softc->media_density, 874 &softc->media_numblks, &softc->buffer_mode, 875 &write_protect, &softc->speed, &comp_supported, 876 &comp_enabled, &softc->comp_algorithm, NULL); 877 if (error) 878 break; 879 if (write_protect) 880 softc->flags |= SA_FLAG_TAPE_WP; 881 else 882 softc->flags &= ~SA_FLAG_TAPE_WP; 883 softc->flags &= ~(SA_FLAG_COMP_SUPP| 884 SA_FLAG_COMP_ENABLED|SA_FLAG_COMP_UNSUPP); 885 if (comp_supported) { 886 if (softc->saved_comp_algorithm == 0) 887 softc->saved_comp_algorithm = 888 softc->comp_algorithm; 889 softc->flags |= SA_FLAG_COMP_SUPP; 890 if (comp_enabled) 891 softc->flags |= SA_FLAG_COMP_ENABLED; 892 } else 893 softc->flags |= SA_FLAG_COMP_UNSUPP; 894 } 895 bzero(g, sizeof(struct mtget)); 896 g->mt_type = MT_ISAR; 897 if (softc->flags & SA_FLAG_COMP_UNSUPP) { 898 g->mt_comp = MT_COMP_UNSUPP; 899 g->mt_comp0 = MT_COMP_UNSUPP; 900 g->mt_comp1 = MT_COMP_UNSUPP; 901 g->mt_comp2 = MT_COMP_UNSUPP; 902 g->mt_comp3 = MT_COMP_UNSUPP; 903 } else { 904 if ((softc->flags & SA_FLAG_COMP_ENABLED) == 0) { 905 g->mt_comp = MT_COMP_DISABLED; 906 } else { 907 g->mt_comp = softc->comp_algorithm; 908 } 909 g->mt_comp0 = softc->comp_algorithm; 910 g->mt_comp1 = softc->comp_algorithm; 911 g->mt_comp2 = softc->comp_algorithm; 912 g->mt_comp3 = softc->comp_algorithm; 913 } 914 g->mt_density = softc->media_density; 915 g->mt_density0 = softc->media_density; 916 g->mt_density1 = softc->media_density; 917 g->mt_density2 = softc->media_density; 918 g->mt_density3 = softc->media_density; 919 g->mt_blksiz = softc->media_blksize; 920 g->mt_blksiz0 = softc->media_blksize; 921 g->mt_blksiz1 = softc->media_blksize; 922 g->mt_blksiz2 = softc->media_blksize; 923 g->mt_blksiz3 = softc->media_blksize; 924 g->mt_fileno = softc->fileno; 925 g->mt_blkno = softc->blkno; 926 g->mt_dsreg = (short) softc->dsreg; 927 /* 928 * Yes, we know that this is likely to overflow 929 */ 930 if (softc->last_resid_was_io) { 931 if ((g->mt_resid = (short) softc->last_io_resid) != 0) { 932 if (SA_IS_CTRL(dev) == 0 || didlockperiph) { 933 softc->last_io_resid = 0; 934 } 935 } 936 } else { 937 if ((g->mt_resid = (short)softc->last_ctl_resid) != 0) { 938 if (SA_IS_CTRL(dev) == 0 || didlockperiph) { 939 softc->last_ctl_resid = 0; 940 } 941 } 942 } 943 error = 0; 944 break; 945 } 946 case MTIOCERRSTAT: 947 { 948 struct scsi_tape_errors *sep = 949 &((union mterrstat *)arg)->scsi_errstat; 950 951 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, 952 ("saioctl: MTIOCERRSTAT\n")); 953 954 bzero(sep, sizeof(*sep)); 955 sep->io_resid = softc->last_io_resid; 956 bcopy((caddr_t) &softc->last_io_sense, sep->io_sense, 957 sizeof (sep->io_sense)); 958 bcopy((caddr_t) &softc->last_io_cdb, sep->io_cdb, 959 sizeof (sep->io_cdb)); 960 sep->ctl_resid = softc->last_ctl_resid; 961 bcopy((caddr_t) &softc->last_ctl_sense, sep->ctl_sense, 962 sizeof (sep->ctl_sense)); 963 bcopy((caddr_t) &softc->last_ctl_cdb, sep->ctl_cdb, 964 sizeof (sep->ctl_cdb)); 965 966 if (SA_IS_CTRL(dev) == 0 || didlockperiph) 967 bzero((caddr_t) &softc->errinfo, 968 sizeof (softc->errinfo)); 969 error = 0; 970 break; 971 } 972 case MTIOCTOP: 973 { 974 struct mtop *mt; 975 int count; 976 977 mt = (struct mtop *)arg; 978 979 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, 980 ("saioctl: op=0x%x count=0x%x\n", 981 mt->mt_op, mt->mt_count)); 982 983 count = mt->mt_count; 984 switch (mt->mt_op) { 985 case MTWEOF: /* write an end-of-file marker */ 986 /* 987 * We don't need to clear the SA_FLAG_TAPE_WRITTEN 988 * flag because by keeping track of filemarks 989 * we have last written we know ehether or not 990 * we need to write more when we close the device. 991 */ 992 error = sawritefilemarks(periph, count, FALSE); 993 break; 994 case MTWSS: /* write a setmark */ 995 error = sawritefilemarks(periph, count, TRUE); 996 break; 997 case MTBSR: /* backward space record */ 998 case MTFSR: /* forward space record */ 999 case MTBSF: /* backward space file */ 1000 case MTFSF: /* forward space file */ 1001 case MTBSS: /* backward space setmark */ 1002 case MTFSS: /* forward space setmark */ 1003 case MTEOD: /* space to end of recorded medium */ 1004 { 1005 int nmarks; 1006 1007 spaceop = SS_FILEMARKS; 1008 nmarks = softc->filemarks; 1009 error = sacheckeod(periph); 1010 if (error) { 1011 xpt_print_path(periph->path); 1012 printf("EOD check prior to spacing failed\n"); 1013 softc->flags |= SA_FLAG_EIO_PENDING; 1014 break; 1015 } 1016 nmarks -= softc->filemarks; 1017 switch(mt->mt_op) { 1018 case MTBSR: 1019 count = -count; 1020 /* FALLTHROUGH */ 1021 case MTFSR: 1022 spaceop = SS_BLOCKS; 1023 break; 1024 case MTBSF: 1025 count = -count; 1026 /* FALLTHROUGH */ 1027 case MTFSF: 1028 break; 1029 case MTBSS: 1030 count = -count; 1031 /* FALLTHROUGH */ 1032 case MTFSS: 1033 spaceop = SS_SETMARKS; 1034 break; 1035 case MTEOD: 1036 spaceop = SS_EOD; 1037 count = 0; 1038 nmarks = 0; 1039 break; 1040 default: 1041 error = EINVAL; 1042 break; 1043 } 1044 if (error) 1045 break; 1046 1047 nmarks = softc->filemarks; 1048 /* 1049 * XXX: Why are we checking again? 1050 */ 1051 error = sacheckeod(periph); 1052 if (error) 1053 break; 1054 nmarks -= softc->filemarks; 1055 error = saspace(periph, count - nmarks, spaceop); 1056 /* 1057 * At this point, clear that we've written the tape 1058 * and that we've written any filemarks. We really 1059 * don't know what the applications wishes to do next- 1060 * the sacheckeod's will make sure we terminated the 1061 * tape correctly if we'd been writing, but the next 1062 * action the user application takes will set again 1063 * whether we need to write filemarks. 1064 */ 1065 softc->flags &= 1066 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1067 softc->filemarks = 0; 1068 break; 1069 } 1070 case MTREW: /* rewind */ 1071 (void) sacheckeod(periph); 1072 error = sarewind(periph); 1073 /* see above */ 1074 softc->flags &= 1075 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1076 softc->flags &= ~SA_FLAG_ERR_PENDING; 1077 softc->filemarks = 0; 1078 break; 1079 case MTERASE: /* erase */ 1080 error = saerase(periph, count); 1081 softc->flags &= 1082 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1083 softc->flags &= ~SA_FLAG_ERR_PENDING; 1084 break; 1085 case MTRETENS: /* re-tension tape */ 1086 error = saretension(periph); 1087 softc->flags &= 1088 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1089 softc->flags &= ~SA_FLAG_ERR_PENDING; 1090 break; 1091 case MTOFFL: /* rewind and put the drive offline */ 1092 1093 (void) sacheckeod(periph); 1094 /* see above */ 1095 softc->flags &= ~SA_FLAG_TAPE_WRITTEN; 1096 softc->filemarks = 0; 1097 1098 error = sarewind(periph); 1099 /* clear the frozen flag anyway */ 1100 softc->flags &= ~SA_FLAG_TAPE_FROZEN; 1101 1102 /* 1103 * Be sure to allow media removal before ejecting. 1104 */ 1105 1106 saprevent(periph, PR_ALLOW); 1107 if (error == 0) { 1108 error = saloadunload(periph, FALSE); 1109 if (error == 0) { 1110 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 1111 } 1112 } 1113 break; 1114 1115 case MTNOP: /* no operation, sets status only */ 1116 case MTCACHE: /* enable controller cache */ 1117 case MTNOCACHE: /* disable controller cache */ 1118 error = 0; 1119 break; 1120 1121 case MTSETBSIZ: /* Set block size for device */ 1122 1123 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, count, 1124 0, 0, 0); 1125 if (error == 0) { 1126 softc->last_media_blksize = 1127 softc->media_blksize; 1128 softc->media_blksize = count; 1129 if (count) { 1130 softc->flags |= SA_FLAG_FIXED; 1131 if (powerof2(count)) { 1132 softc->blk_shift = 1133 ffs(count) - 1; 1134 softc->blk_mask = count - 1; 1135 } else { 1136 softc->blk_mask = ~0; 1137 softc->blk_shift = 0; 1138 } 1139 /* 1140 * Make the user's desire 'persistent'. 1141 */ 1142 softc->quirks &= ~SA_QUIRK_VARIABLE; 1143 softc->quirks |= SA_QUIRK_FIXED; 1144 } else { 1145 softc->flags &= ~SA_FLAG_FIXED; 1146 if (softc->max_blk == 0) { 1147 softc->max_blk = ~0; 1148 } 1149 softc->blk_shift = 0; 1150 if (softc->blk_gran != 0) { 1151 softc->blk_mask = 1152 softc->blk_gran - 1; 1153 } else { 1154 softc->blk_mask = 0; 1155 } 1156 /* 1157 * Make the user's desire 'persistent'. 1158 */ 1159 softc->quirks |= SA_QUIRK_VARIABLE; 1160 softc->quirks &= ~SA_QUIRK_FIXED; 1161 } 1162 } 1163 break; 1164 case MTSETDNSTY: /* Set density for device and mode */ 1165 if (count > UCHAR_MAX) { 1166 error = EINVAL; 1167 break; 1168 } else { 1169 error = sasetparams(periph, SA_PARAM_DENSITY, 1170 0, count, 0, 0); 1171 } 1172 break; 1173 case MTCOMP: /* enable compression */ 1174 /* 1175 * Some devices don't support compression, and 1176 * don't like it if you ask them for the 1177 * compression page. 1178 */ 1179 if ((softc->quirks & SA_QUIRK_NOCOMP) || 1180 (softc->flags & SA_FLAG_COMP_UNSUPP)) { 1181 error = ENODEV; 1182 break; 1183 } 1184 error = sasetparams(periph, SA_PARAM_COMPRESSION, 1185 0, 0, count, SF_NO_PRINT); 1186 break; 1187 default: 1188 error = EINVAL; 1189 } 1190 break; 1191 } 1192 case MTIOCIEOT: 1193 case MTIOCEEOT: 1194 error = 0; 1195 break; 1196 case MTIOCRDSPOS: 1197 error = sardpos(periph, 0, (u_int32_t *) arg); 1198 break; 1199 case MTIOCRDHPOS: 1200 error = sardpos(periph, 1, (u_int32_t *) arg); 1201 break; 1202 case MTIOCSLOCATE: 1203 error = sasetpos(periph, 0, (u_int32_t *) arg); 1204 break; 1205 case MTIOCHLOCATE: 1206 error = sasetpos(periph, 1, (u_int32_t *) arg); 1207 break; 1208 case MTIOCGETEOTMODEL: 1209 error = 0; 1210 if (softc->quirks & SA_QUIRK_1FM) 1211 mode = 1; 1212 else 1213 mode = 2; 1214 *((u_int32_t *) arg) = mode; 1215 break; 1216 case MTIOCSETEOTMODEL: 1217 error = 0; 1218 switch (*((u_int32_t *) arg)) { 1219 case 1: 1220 softc->quirks &= ~SA_QUIRK_2FM; 1221 softc->quirks |= SA_QUIRK_1FM; 1222 break; 1223 case 2: 1224 softc->quirks &= ~SA_QUIRK_1FM; 1225 softc->quirks |= SA_QUIRK_2FM; 1226 break; 1227 default: 1228 error = EINVAL; 1229 break; 1230 } 1231 break; 1232 default: 1233 error = cam_periph_ioctl(periph, cmd, arg, saerror); 1234 break; 1235 } 1236 1237 /* 1238 * Check to see if we cleared a frozen state 1239 */ 1240 if (error == 0 && (softc->flags & SA_FLAG_TAPE_FROZEN)) { 1241 switch(cmd) { 1242 case MTIOCRDSPOS: 1243 case MTIOCRDHPOS: 1244 case MTIOCSLOCATE: 1245 case MTIOCHLOCATE: 1246 softc->fileno = (daddr_t) -1; 1247 softc->blkno = (daddr_t) -1; 1248 softc->flags &= ~SA_FLAG_TAPE_FROZEN; 1249 xpt_print_path(periph->path); 1250 printf("tape state now unfrozen.\n"); 1251 break; 1252 default: 1253 break; 1254 } 1255 } 1256 if (didlockperiph) { 1257 cam_periph_unlock(periph); 1258 } 1259 return (error); 1260 } 1261 1262 static void 1263 sainit(void) 1264 { 1265 cam_status status; 1266 struct cam_path *path; 1267 1268 /* 1269 * Create our extend array for storing the devices we attach to. 1270 */ 1271 saperiphs = cam_extend_new(); 1272 if (saperiphs == NULL) { 1273 printf("sa: Failed to alloc extend array!\n"); 1274 return; 1275 } 1276 1277 /* 1278 * Install a global async callback. 1279 */ 1280 status = xpt_create_path(&path, NULL, CAM_XPT_PATH_ID, 1281 CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD); 1282 1283 if (status == CAM_REQ_CMP) { 1284 /* Register the async callbacks of interrest */ 1285 struct ccb_setasync csa; /* 1286 * This is an immediate CCB, 1287 * so using the stack is OK 1288 */ 1289 xpt_setup_ccb(&csa.ccb_h, path, 5); 1290 csa.ccb_h.func_code = XPT_SASYNC_CB; 1291 csa.event_enable = AC_FOUND_DEVICE; 1292 csa.callback = saasync; 1293 csa.callback_arg = NULL; 1294 xpt_action((union ccb *)&csa); 1295 status = csa.ccb_h.status; 1296 xpt_free_path(path); 1297 } 1298 1299 if (status != CAM_REQ_CMP) { 1300 printf("sa: Failed to attach master async callback " 1301 "due to status 0x%x!\n", status); 1302 } 1303 } 1304 1305 static void 1306 saoninvalidate(struct cam_periph *periph) 1307 { 1308 struct sa_softc *softc; 1309 struct buf *q_bp; 1310 struct ccb_setasync csa; 1311 int s; 1312 1313 softc = (struct sa_softc *)periph->softc; 1314 1315 /* 1316 * De-register any async callbacks. 1317 */ 1318 xpt_setup_ccb(&csa.ccb_h, periph->path, 1319 /* priority */ 5); 1320 csa.ccb_h.func_code = XPT_SASYNC_CB; 1321 csa.event_enable = 0; 1322 csa.callback = saasync; 1323 csa.callback_arg = periph; 1324 xpt_action((union ccb *)&csa); 1325 1326 softc->flags |= SA_FLAG_INVALID; 1327 1328 /* 1329 * Although the oninvalidate() routines are always called at 1330 * splsoftcam, we need to be at splbio() here to keep the buffer 1331 * queue from being modified while we traverse it. 1332 */ 1333 s = splbio(); 1334 1335 /* 1336 * Return all queued I/O with ENXIO. 1337 * XXX Handle any transactions queued to the card 1338 * with XPT_ABORT_CCB. 1339 */ 1340 while ((q_bp = bufq_first(&softc->buf_queue)) != NULL){ 1341 bufq_remove(&softc->buf_queue, q_bp); 1342 q_bp->b_resid = q_bp->b_bcount; 1343 q_bp->b_error = ENXIO; 1344 q_bp->b_flags |= B_ERROR; 1345 biodone(q_bp); 1346 } 1347 softc->queue_count = 0; 1348 splx(s); 1349 1350 xpt_print_path(periph->path); 1351 printf("lost device\n"); 1352 1353 } 1354 1355 static void 1356 sacleanup(struct cam_periph *periph) 1357 { 1358 struct sa_softc *softc; 1359 1360 softc = (struct sa_softc *)periph->softc; 1361 1362 devstat_remove_entry(&softc->device_stats); 1363 1364 cam_extend_release(saperiphs, periph->unit_number); 1365 xpt_print_path(periph->path); 1366 printf("removing device entry\n"); 1367 cdevsw_remove(&sa_cdevsw, SA_UNITMASK, SA_UNIT(periph->unit_number)); 1368 free(softc, M_DEVBUF); 1369 } 1370 1371 static void 1372 saasync(void *callback_arg, u_int32_t code, 1373 struct cam_path *path, void *arg) 1374 { 1375 struct cam_periph *periph; 1376 1377 periph = (struct cam_periph *)callback_arg; 1378 switch (code) { 1379 case AC_FOUND_DEVICE: 1380 { 1381 struct ccb_getdev *cgd; 1382 cam_status status; 1383 1384 cgd = (struct ccb_getdev *)arg; 1385 if (cgd == NULL) 1386 break; 1387 1388 if (SID_TYPE(&cgd->inq_data) != T_SEQUENTIAL) 1389 break; 1390 1391 /* 1392 * Allocate a peripheral instance for 1393 * this device and start the probe 1394 * process. 1395 */ 1396 status = cam_periph_alloc(saregister, saoninvalidate, 1397 sacleanup, sastart, 1398 "sa", CAM_PERIPH_BIO, cgd->ccb_h.path, 1399 saasync, AC_FOUND_DEVICE, cgd); 1400 1401 if (status != CAM_REQ_CMP 1402 && status != CAM_REQ_INPROG) 1403 printf("saasync: Unable to probe new device " 1404 "due to status 0x%x\n", status); 1405 break; 1406 } 1407 default: 1408 cam_periph_async(periph, code, path, arg); 1409 break; 1410 } 1411 } 1412 1413 static cam_status 1414 saregister(struct cam_periph *periph, void *arg) 1415 { 1416 struct sa_softc *softc; 1417 struct ccb_setasync csa; 1418 struct ccb_getdev *cgd; 1419 caddr_t match; 1420 int i; 1421 1422 cgd = (struct ccb_getdev *)arg; 1423 if (periph == NULL) { 1424 printf("saregister: periph was NULL!!\n"); 1425 return (CAM_REQ_CMP_ERR); 1426 } 1427 1428 if (cgd == NULL) { 1429 printf("saregister: no getdev CCB, can't register device\n"); 1430 return (CAM_REQ_CMP_ERR); 1431 } 1432 1433 softc = malloc(sizeof (*softc), M_DEVBUF, M_INTWAIT | M_ZERO); 1434 softc->scsi_rev = SID_ANSI_REV(&cgd->inq_data); 1435 softc->state = SA_STATE_NORMAL; 1436 softc->fileno = (daddr_t) -1; 1437 softc->blkno = (daddr_t) -1; 1438 1439 bufq_init(&softc->buf_queue); 1440 periph->softc = softc; 1441 cam_extend_set(saperiphs, periph->unit_number, periph); 1442 1443 /* 1444 * See if this device has any quirks. 1445 */ 1446 match = cam_quirkmatch((caddr_t)&cgd->inq_data, 1447 (caddr_t)sa_quirk_table, 1448 sizeof(sa_quirk_table)/sizeof(*sa_quirk_table), 1449 sizeof(*sa_quirk_table), scsi_inquiry_match); 1450 1451 if (match != NULL) { 1452 softc->quirks = ((struct sa_quirk_entry *)match)->quirks; 1453 softc->last_media_blksize = 1454 ((struct sa_quirk_entry *)match)->prefblk; 1455 #ifdef CAMDEBUG 1456 xpt_print_path(periph->path); 1457 printf("found quirk entry %d\n", (int) 1458 (((struct sa_quirk_entry *) match) - sa_quirk_table)); 1459 #endif 1460 } else 1461 softc->quirks = SA_QUIRK_NONE; 1462 1463 /* 1464 * The SA driver supports a blocksize, but we don't know the 1465 * blocksize until we media is inserted. So, set a flag to 1466 * indicate that the blocksize is unavailable right now. 1467 */ 1468 devstat_add_entry(&softc->device_stats, "sa", periph->unit_number, 0, 1469 DEVSTAT_BS_UNAVAILABLE, SID_TYPE(&cgd->inq_data) | 1470 DEVSTAT_TYPE_IF_SCSI, DEVSTAT_PRIORITY_TAPE); 1471 1472 cdevsw_add(&sa_cdevsw, SA_UNITMASK, SA_UNIT(periph->unit_number)); 1473 make_dev(&sa_cdevsw, SAMINOR(SA_CTLDEV, 1474 periph->unit_number, 0, SA_ATYPE_R), UID_ROOT, GID_OPERATOR, 1475 0660, "r%s%d.ctl", periph->periph_name, periph->unit_number); 1476 1477 make_dev(&sa_cdevsw, SAMINOR(SA_NOT_CTLDEV, 1478 periph->unit_number, 0, SA_ATYPE_R), UID_ROOT, GID_OPERATOR, 1479 0660, "r%s%d", periph->periph_name, periph->unit_number); 1480 1481 make_dev(&sa_cdevsw, SAMINOR(SA_NOT_CTLDEV, 1482 periph->unit_number, 0, SA_ATYPE_NR), UID_ROOT, GID_OPERATOR, 1483 0660, "nr%s%d", periph->periph_name, periph->unit_number); 1484 1485 make_dev(&sa_cdevsw, SAMINOR(SA_NOT_CTLDEV, 1486 periph->unit_number, 0, SA_ATYPE_ER), UID_ROOT, GID_OPERATOR, 1487 0660, "er%s%d", periph->periph_name, periph->unit_number); 1488 1489 for (i = 0; i < SA_NUM_MODES; i++) { 1490 1491 make_dev(&sa_cdevsw, 1492 SAMINOR(SA_NOT_CTLDEV, periph->unit_number, i, SA_ATYPE_R), 1493 UID_ROOT, GID_OPERATOR, 0660, "r%s%d.%d", 1494 periph->periph_name, periph->unit_number, i); 1495 1496 make_dev(&sa_cdevsw, 1497 SAMINOR(SA_NOT_CTLDEV, periph->unit_number, i, SA_ATYPE_NR), 1498 UID_ROOT, GID_OPERATOR, 0660, "nr%s%d.%d", 1499 periph->periph_name, periph->unit_number, i); 1500 1501 1502 make_dev(&sa_cdevsw, 1503 SAMINOR(SA_NOT_CTLDEV, periph->unit_number, i, SA_ATYPE_ER), 1504 UID_ROOT, GID_OPERATOR, 0660, "er%s%d.%d", 1505 periph->periph_name, periph->unit_number, i); 1506 } 1507 1508 /* 1509 * Add an async callback so that we get 1510 * notified if this device goes away. 1511 */ 1512 xpt_setup_ccb(&csa.ccb_h, periph->path, /* priority */ 5); 1513 csa.ccb_h.func_code = XPT_SASYNC_CB; 1514 csa.event_enable = AC_LOST_DEVICE; 1515 csa.callback = saasync; 1516 csa.callback_arg = periph; 1517 xpt_action((union ccb *)&csa); 1518 1519 xpt_announce_periph(periph, NULL); 1520 1521 return (CAM_REQ_CMP); 1522 } 1523 1524 static void 1525 sastart(struct cam_periph *periph, union ccb *start_ccb) 1526 { 1527 struct sa_softc *softc; 1528 1529 softc = (struct sa_softc *)periph->softc; 1530 1531 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("sastart")); 1532 1533 1534 switch (softc->state) { 1535 case SA_STATE_NORMAL: 1536 { 1537 /* Pull a buffer from the queue and get going on it */ 1538 struct buf *bp; 1539 int s; 1540 1541 /* 1542 * See if there is a buf with work for us to do.. 1543 */ 1544 s = splbio(); 1545 bp = bufq_first(&softc->buf_queue); 1546 if (periph->immediate_priority <= periph->pinfo.priority) { 1547 CAM_DEBUG_PRINT(CAM_DEBUG_SUBTRACE, 1548 ("queuing for immediate ccb\n")); 1549 Set_CCB_Type(start_ccb, SA_CCB_WAITING); 1550 SLIST_INSERT_HEAD(&periph->ccb_list, &start_ccb->ccb_h, 1551 periph_links.sle); 1552 periph->immediate_priority = CAM_PRIORITY_NONE; 1553 splx(s); 1554 wakeup(&periph->ccb_list); 1555 } else if (bp == NULL) { 1556 splx(s); 1557 xpt_release_ccb(start_ccb); 1558 } else if ((softc->flags & SA_FLAG_ERR_PENDING) != 0) { 1559 struct buf *done_bp; 1560 again: 1561 softc->queue_count--; 1562 bufq_remove(&softc->buf_queue, bp); 1563 bp->b_resid = bp->b_bcount; 1564 done_bp = bp; 1565 if ((softc->flags & SA_FLAG_EOM_PENDING) != 0) { 1566 /* 1567 * We now just clear errors in this case 1568 * and let the residual be the notifier. 1569 */ 1570 bp->b_error = 0; 1571 } else if ((softc->flags & SA_FLAG_EOF_PENDING) != 0) { 1572 /* 1573 * This can only happen if we're reading 1574 * in fixed length mode. In this case, 1575 * we dump the rest of the list the 1576 * same way. 1577 */ 1578 bp->b_error = 0; 1579 if (bufq_first(&softc->buf_queue) != NULL) { 1580 biodone(done_bp); 1581 goto again; 1582 } 1583 } else if ((softc->flags & SA_FLAG_EIO_PENDING) != 0) { 1584 bp->b_error = EIO; 1585 bp->b_flags |= B_ERROR; 1586 } 1587 bp = bufq_first(&softc->buf_queue); 1588 /* 1589 * Only if we have no other buffers queued up 1590 * do we clear the pending error flag. 1591 */ 1592 if (bp == NULL) 1593 softc->flags &= ~SA_FLAG_ERR_PENDING; 1594 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 1595 ("sastart- ERR_PENDING now 0x%x, bp is %sNULL, " 1596 "%d more buffers queued up\n", 1597 (softc->flags & SA_FLAG_ERR_PENDING), 1598 (bp != NULL)? "not " : " ", softc->queue_count)); 1599 splx(s); 1600 xpt_release_ccb(start_ccb); 1601 biodone(done_bp); 1602 } else { 1603 u_int32_t length; 1604 1605 bufq_remove(&softc->buf_queue, bp); 1606 softc->queue_count--; 1607 1608 if ((softc->flags & SA_FLAG_FIXED) != 0) { 1609 if (softc->blk_shift != 0) { 1610 length = 1611 bp->b_bcount >> softc->blk_shift; 1612 } else if (softc->media_blksize != 0) { 1613 length = 1614 bp->b_bcount / softc->media_blksize; 1615 } else { 1616 bp->b_error = EIO; 1617 xpt_print_path(periph->path); 1618 printf("zero blocksize for " 1619 "FIXED length writes?\n"); 1620 splx(s); 1621 biodone(bp); 1622 break; 1623 } 1624 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 1625 ("Fixed Record Count is %d\n", length)); 1626 } else { 1627 length = bp->b_bcount; 1628 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_INFO, 1629 ("Variable Record Count is %d\n", length)); 1630 } 1631 devstat_start_transaction(&softc->device_stats); 1632 /* 1633 * Some people have theorized that we should 1634 * suppress illegal length indication if we are 1635 * running in variable block mode so that we don't 1636 * have to request sense every time our requested 1637 * block size is larger than the written block. 1638 * The residual information from the ccb allows 1639 * us to identify this situation anyway. The only 1640 * problem with this is that we will not get 1641 * information about blocks that are larger than 1642 * our read buffer unless we set the block size 1643 * in the mode page to something other than 0. 1644 * 1645 * I believe that this is a non-issue. If user apps 1646 * don't adjust their read size to match our record 1647 * size, that's just life. Anyway, the typical usage 1648 * would be to issue, e.g., 64KB reads and occasionally 1649 * have to do deal with 512 byte or 1KB intermediate 1650 * records. 1651 */ 1652 softc->dsreg = (bp->b_flags & B_READ)? 1653 MTIO_DSREG_RD : MTIO_DSREG_WR; 1654 scsi_sa_read_write(&start_ccb->csio, 0, sadone, 1655 MSG_SIMPLE_Q_TAG, (bp->b_flags & B_READ) != 0, 1656 FALSE, (softc->flags & SA_FLAG_FIXED) != 0, 1657 length, bp->b_data, bp->b_bcount, SSD_FULL_SIZE, 1658 IO_TIMEOUT); 1659 start_ccb->ccb_h.ccb_pflags &= ~SA_POSITION_UPDATED; 1660 Set_CCB_Type(start_ccb, SA_CCB_BUFFER_IO); 1661 start_ccb->ccb_h.ccb_bp = bp; 1662 bp = bufq_first(&softc->buf_queue); 1663 splx(s); 1664 xpt_action(start_ccb); 1665 } 1666 1667 if (bp != NULL) { 1668 /* Have more work to do, so ensure we stay scheduled */ 1669 xpt_schedule(periph, 1); 1670 } 1671 break; 1672 } 1673 case SA_STATE_ABNORMAL: 1674 default: 1675 panic("state 0x%x in sastart", softc->state); 1676 break; 1677 } 1678 } 1679 1680 1681 static void 1682 sadone(struct cam_periph *periph, union ccb *done_ccb) 1683 { 1684 struct sa_softc *softc; 1685 struct ccb_scsiio *csio; 1686 1687 softc = (struct sa_softc *)periph->softc; 1688 csio = &done_ccb->csio; 1689 switch (CCB_Type(csio)) { 1690 case SA_CCB_BUFFER_IO: 1691 { 1692 struct buf *bp; 1693 int error; 1694 1695 softc->dsreg = MTIO_DSREG_REST; 1696 bp = (struct buf *)done_ccb->ccb_h.ccb_bp; 1697 error = 0; 1698 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 1699 if ((error = saerror(done_ccb, 0, 0)) == ERESTART) { 1700 /* 1701 * A retry was scheduled, so just return. 1702 */ 1703 return; 1704 } 1705 } 1706 1707 if (error == EIO) { 1708 int s; 1709 struct buf *q_bp; 1710 1711 /* 1712 * Catastrophic error. Mark the tape as frozen 1713 * (we no longer know tape position). 1714 * 1715 * Return all queued I/O with EIO, and unfreeze 1716 * our queue so that future transactions that 1717 * attempt to fix this problem can get to the 1718 * device. 1719 * 1720 */ 1721 1722 s = splbio(); 1723 softc->flags |= SA_FLAG_TAPE_FROZEN; 1724 while ((q_bp = bufq_first(&softc->buf_queue)) != NULL) { 1725 bufq_remove(&softc->buf_queue, q_bp); 1726 q_bp->b_resid = q_bp->b_bcount; 1727 q_bp->b_error = EIO; 1728 q_bp->b_flags |= B_ERROR; 1729 biodone(q_bp); 1730 } 1731 splx(s); 1732 } 1733 if (error != 0) { 1734 bp->b_resid = bp->b_bcount; 1735 bp->b_error = error; 1736 bp->b_flags |= B_ERROR; 1737 /* 1738 * In the error case, position is updated in saerror. 1739 */ 1740 } else { 1741 bp->b_resid = csio->resid; 1742 bp->b_error = 0; 1743 if (csio->resid != 0) { 1744 bp->b_flags |= B_ERROR; 1745 } 1746 if ((bp->b_flags & B_READ) == 0) { 1747 softc->flags |= SA_FLAG_TAPE_WRITTEN; 1748 softc->filemarks = 0; 1749 } 1750 if (!(csio->ccb_h.ccb_pflags & SA_POSITION_UPDATED) && 1751 (softc->blkno != (daddr_t) -1)) { 1752 if ((softc->flags & SA_FLAG_FIXED) != 0) { 1753 u_int32_t l; 1754 if (softc->blk_shift != 0) { 1755 l = bp->b_bcount >> 1756 softc->blk_shift; 1757 } else { 1758 l = bp->b_bcount / 1759 softc->media_blksize; 1760 } 1761 softc->blkno += (daddr_t) l; 1762 } else { 1763 softc->blkno++; 1764 } 1765 } 1766 } 1767 /* 1768 * If we had an error (immediate or pending), 1769 * release the device queue now. 1770 */ 1771 if (error || (softc->flags & SA_FLAG_ERR_PENDING)) 1772 cam_release_devq(done_ccb->ccb_h.path, 0, 0, 0, 0); 1773 #ifdef CAMDEBUG 1774 if (error || bp->b_resid) { 1775 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 1776 ("error %d resid %ld count %ld\n", error, 1777 bp->b_resid, bp->b_bcount)); 1778 } 1779 #endif 1780 devstat_end_transaction_buf(&softc->device_stats, bp); 1781 biodone(bp); 1782 break; 1783 } 1784 case SA_CCB_WAITING: 1785 { 1786 /* Caller will release the CCB */ 1787 wakeup(&done_ccb->ccb_h.cbfcnp); 1788 return; 1789 } 1790 } 1791 xpt_release_ccb(done_ccb); 1792 } 1793 1794 /* 1795 * Mount the tape (make sure it's ready for I/O). 1796 */ 1797 static int 1798 samount(struct cam_periph *periph, int oflags, dev_t dev) 1799 { 1800 struct sa_softc *softc; 1801 union ccb *ccb; 1802 int error; 1803 1804 /* 1805 * oflags can be checked for 'kind' of open (read-only check) - later 1806 * dev can be checked for a control-mode or compression open - later 1807 */ 1808 UNUSED_PARAMETER(oflags); 1809 UNUSED_PARAMETER(dev); 1810 1811 1812 softc = (struct sa_softc *)periph->softc; 1813 1814 /* 1815 * This should determine if something has happend since the last 1816 * open/mount that would invalidate the mount. We do *not* want 1817 * to retry this command- we just want the status. But we only 1818 * do this if we're mounted already- if we're not mounted, 1819 * we don't care about the unit read state and can instead use 1820 * this opportunity to attempt to reserve the tape unit. 1821 */ 1822 1823 if (softc->flags & SA_FLAG_TAPE_MOUNTED) { 1824 ccb = cam_periph_getccb(periph, 1); 1825 scsi_test_unit_ready(&ccb->csio, 0, sadone, 1826 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT); 1827 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1828 &softc->device_stats); 1829 QFRLS(ccb); 1830 if (error == ENXIO) { 1831 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 1832 scsi_test_unit_ready(&ccb->csio, 0, sadone, 1833 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT); 1834 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1835 &softc->device_stats); 1836 QFRLS(ccb); 1837 } else if (error) { 1838 /* 1839 * We don't need to freeze the tape because we 1840 * will now attempt to rewind/load it. 1841 */ 1842 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 1843 if (CAM_DEBUGGED(ccb->ccb_h.path, CAM_DEBUG_INFO)) { 1844 xpt_print_path(ccb->ccb_h.path); 1845 printf("error %d on TUR in samount\n", error); 1846 } 1847 } 1848 } else { 1849 error = sareservereleaseunit(periph, TRUE); 1850 if (error) { 1851 return (error); 1852 } 1853 ccb = cam_periph_getccb(periph, 1); 1854 scsi_test_unit_ready(&ccb->csio, 0, sadone, 1855 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT); 1856 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1857 &softc->device_stats); 1858 QFRLS(ccb); 1859 } 1860 1861 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) { 1862 struct scsi_read_block_limits_data *rblim = NULL; 1863 int comp_enabled, comp_supported; 1864 u_int8_t write_protect, guessing = 0; 1865 1866 /* 1867 * Clear out old state. 1868 */ 1869 softc->flags &= ~(SA_FLAG_TAPE_WP|SA_FLAG_TAPE_WRITTEN| 1870 SA_FLAG_ERR_PENDING|SA_FLAG_COMP_ENABLED| 1871 SA_FLAG_COMP_SUPP|SA_FLAG_COMP_UNSUPP); 1872 softc->filemarks = 0; 1873 1874 /* 1875 * *Very* first off, make sure we're loaded to BOT. 1876 */ 1877 scsi_load_unload(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 1878 FALSE, FALSE, 1, SSD_FULL_SIZE, REWIND_TIMEOUT); 1879 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1880 &softc->device_stats); 1881 QFRLS(ccb); 1882 1883 /* 1884 * In case this doesn't work, do a REWIND instead 1885 */ 1886 if (error) { 1887 scsi_rewind(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, 1888 FALSE, SSD_FULL_SIZE, REWIND_TIMEOUT); 1889 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1890 &softc->device_stats); 1891 QFRLS(ccb); 1892 } 1893 if (error) { 1894 xpt_release_ccb(ccb); 1895 goto exit; 1896 } 1897 1898 /* 1899 * Do a dummy test read to force access to the 1900 * media so that the drive will really know what's 1901 * there. We actually don't really care what the 1902 * blocksize on tape is and don't expect to really 1903 * read a full record. 1904 */ 1905 rblim = malloc(8192, M_TEMP, M_INTWAIT); 1906 1907 if ((softc->quirks & SA_QUIRK_NODREAD) == 0) { 1908 scsi_sa_read_write(&ccb->csio, 0, sadone, 1909 MSG_SIMPLE_Q_TAG, 1, FALSE, 0, 8192, 1910 (void *) rblim, 8192, SSD_FULL_SIZE, 1911 IO_TIMEOUT); 1912 (void) cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1913 &softc->device_stats); 1914 QFRLS(ccb); 1915 scsi_rewind(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, 1916 FALSE, SSD_FULL_SIZE, REWIND_TIMEOUT); 1917 error = cam_periph_runccb(ccb, saerror, 0, 1918 SF_NO_PRINT | SF_RETRY_SELTO | SF_RETRY_UA, 1919 &softc->device_stats); 1920 QFRLS(ccb); 1921 if (error) { 1922 xpt_print_path(ccb->ccb_h.path); 1923 printf("unable to rewind after test read\n"); 1924 xpt_release_ccb(ccb); 1925 goto exit; 1926 } 1927 } 1928 1929 /* 1930 * Next off, determine block limits. 1931 */ 1932 scsi_read_block_limits(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, 1933 rblim, SSD_FULL_SIZE, SCSIOP_TIMEOUT); 1934 1935 error = cam_periph_runccb(ccb, saerror, 0, 1936 SF_NO_PRINT | SF_RETRY_UA | SF_RETRY_SELTO, 1937 &softc->device_stats); 1938 QFRLS(ccb); 1939 xpt_release_ccb(ccb); 1940 1941 if (error != 0) { 1942 /* 1943 * If it's less than SCSI-2, READ BLOCK LIMITS is not 1944 * a MANDATORY command. Anyway- it doesn't matter- 1945 * we can proceed anyway. 1946 */ 1947 softc->blk_gran = 0; 1948 softc->max_blk = ~0; 1949 softc->min_blk = 0; 1950 } else { 1951 if (softc->scsi_rev >= SCSI_REV_3) { 1952 softc->blk_gran = RBL_GRAN(rblim); 1953 } else { 1954 softc->blk_gran = 0; 1955 } 1956 /* 1957 * We take max_blk == min_blk to mean a default to 1958 * fixed mode- but note that whatever we get out of 1959 * sagetparams below will actually determine whether 1960 * we are actually *in* fixed mode. 1961 */ 1962 softc->max_blk = scsi_3btoul(rblim->maximum); 1963 softc->min_blk = scsi_2btoul(rblim->minimum); 1964 1965 1966 } 1967 /* 1968 * Next, perform a mode sense to determine 1969 * current density, blocksize, compression etc. 1970 */ 1971 error = sagetparams(periph, SA_PARAM_ALL, 1972 &softc->media_blksize, 1973 &softc->media_density, 1974 &softc->media_numblks, 1975 &softc->buffer_mode, &write_protect, 1976 &softc->speed, &comp_supported, 1977 &comp_enabled, &softc->comp_algorithm, 1978 NULL); 1979 1980 if (error != 0) { 1981 /* 1982 * We could work a little harder here. We could 1983 * adjust our attempts to get information. It 1984 * might be an ancient tape drive. If someone 1985 * nudges us, we'll do that. 1986 */ 1987 goto exit; 1988 } 1989 1990 /* 1991 * If no quirk has determined that this is a device that is 1992 * preferred to be in fixed or variable mode, now is the time 1993 * to find out. 1994 */ 1995 if ((softc->quirks & (SA_QUIRK_FIXED|SA_QUIRK_VARIABLE)) == 0) { 1996 guessing = 1; 1997 /* 1998 * This could be expensive to find out. Luckily we 1999 * only need to do this once. If we start out in 2000 * 'default' mode, try and set ourselves to one 2001 * of the densities that would determine a wad 2002 * of other stuff. Go from highest to lowest. 2003 */ 2004 if (softc->media_density == SCSI_DEFAULT_DENSITY) { 2005 int i; 2006 static u_int8_t ctry[] = { 2007 SCSI_DENSITY_HALFINCH_PE, 2008 SCSI_DENSITY_HALFINCH_6250C, 2009 SCSI_DENSITY_HALFINCH_6250, 2010 SCSI_DENSITY_HALFINCH_1600, 2011 SCSI_DENSITY_HALFINCH_800, 2012 SCSI_DENSITY_QIC_4GB, 2013 SCSI_DENSITY_QIC_2GB, 2014 SCSI_DENSITY_QIC_525_320, 2015 SCSI_DENSITY_QIC_150, 2016 SCSI_DENSITY_QIC_120, 2017 SCSI_DENSITY_QIC_24, 2018 SCSI_DENSITY_QIC_11_9TRK, 2019 SCSI_DENSITY_QIC_11_4TRK, 2020 SCSI_DENSITY_QIC_1320, 2021 SCSI_DENSITY_QIC_3080, 2022 0 2023 }; 2024 for (i = 0; ctry[i]; i++) { 2025 error = sasetparams(periph, 2026 SA_PARAM_DENSITY, 0, ctry[i], 2027 0, SF_NO_PRINT); 2028 if (error == 0) { 2029 softc->media_density = ctry[i]; 2030 break; 2031 } 2032 } 2033 } 2034 switch (softc->media_density) { 2035 case SCSI_DENSITY_QIC_11_4TRK: 2036 case SCSI_DENSITY_QIC_11_9TRK: 2037 case SCSI_DENSITY_QIC_24: 2038 case SCSI_DENSITY_QIC_120: 2039 case SCSI_DENSITY_QIC_150: 2040 case SCSI_DENSITY_QIC_525_320: 2041 case SCSI_DENSITY_QIC_1320: 2042 case SCSI_DENSITY_QIC_3080: 2043 softc->quirks &= ~SA_QUIRK_2FM; 2044 softc->quirks |= SA_QUIRK_FIXED|SA_QUIRK_1FM; 2045 softc->last_media_blksize = 512; 2046 break; 2047 case SCSI_DENSITY_QIC_4GB: 2048 case SCSI_DENSITY_QIC_2GB: 2049 softc->quirks &= ~SA_QUIRK_2FM; 2050 softc->quirks |= SA_QUIRK_FIXED|SA_QUIRK_1FM; 2051 softc->last_media_blksize = 1024; 2052 break; 2053 default: 2054 softc->last_media_blksize = 2055 softc->media_blksize; 2056 softc->quirks |= SA_QUIRK_VARIABLE; 2057 break; 2058 } 2059 } 2060 2061 /* 2062 * If no quirk has determined that this is a device that needs 2063 * to have 2 Filemarks at EOD, now is the time to find out. 2064 */ 2065 2066 if ((softc->quirks & SA_QUIRK_2FM) == 0) { 2067 switch (softc->media_density) { 2068 case SCSI_DENSITY_HALFINCH_800: 2069 case SCSI_DENSITY_HALFINCH_1600: 2070 case SCSI_DENSITY_HALFINCH_6250: 2071 case SCSI_DENSITY_HALFINCH_6250C: 2072 case SCSI_DENSITY_HALFINCH_PE: 2073 softc->quirks &= ~SA_QUIRK_1FM; 2074 softc->quirks |= SA_QUIRK_2FM; 2075 break; 2076 default: 2077 break; 2078 } 2079 } 2080 2081 /* 2082 * Now validate that some info we got makes sense. 2083 */ 2084 if ((softc->max_blk < softc->media_blksize) || 2085 (softc->min_blk > softc->media_blksize && 2086 softc->media_blksize)) { 2087 xpt_print_path(ccb->ccb_h.path); 2088 printf("BLOCK LIMITS (%d..%d) could not match current " 2089 "block settings (%d)- adjusting\n", softc->min_blk, 2090 softc->max_blk, softc->media_blksize); 2091 softc->max_blk = softc->min_blk = 2092 softc->media_blksize; 2093 } 2094 2095 /* 2096 * Now put ourselves into the right frame of mind based 2097 * upon quirks... 2098 */ 2099 tryagain: 2100 /* 2101 * If we want to be in FIXED mode and our current blocksize 2102 * is not equal to our last blocksize (if nonzero), try and 2103 * set ourselves to this last blocksize (as the 'preferred' 2104 * block size). The initial quirkmatch at registry sets the 2105 * initial 'last' blocksize. If, for whatever reason, this 2106 * 'last' blocksize is zero, set the blocksize to 512, 2107 * or min_blk if that's larger. 2108 */ 2109 if ((softc->quirks & SA_QUIRK_FIXED) && 2110 (softc->quirks & SA_QUIRK_NO_MODESEL) == 0 && 2111 (softc->media_blksize != softc->last_media_blksize)) { 2112 softc->media_blksize = softc->last_media_blksize; 2113 if (softc->media_blksize == 0) { 2114 softc->media_blksize = 512; 2115 if (softc->media_blksize < softc->min_blk) { 2116 softc->media_blksize = softc->min_blk; 2117 } 2118 } 2119 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, 2120 softc->media_blksize, 0, 0, SF_NO_PRINT); 2121 if (error) { 2122 xpt_print_path(ccb->ccb_h.path); 2123 printf("unable to set fixed blocksize to %d\n", 2124 softc->media_blksize); 2125 goto exit; 2126 } 2127 } 2128 2129 if ((softc->quirks & SA_QUIRK_VARIABLE) && 2130 (softc->media_blksize != 0)) { 2131 softc->last_media_blksize = softc->media_blksize; 2132 softc->media_blksize = 0; 2133 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, 2134 0, 0, 0, SF_NO_PRINT); 2135 if (error) { 2136 /* 2137 * If this fails and we were guessing, just 2138 * assume that we got it wrong and go try 2139 * fixed block mode. Don't even check against 2140 * density code at this point. 2141 */ 2142 if (guessing) { 2143 softc->quirks &= ~SA_QUIRK_VARIABLE; 2144 softc->quirks |= SA_QUIRK_FIXED; 2145 if (softc->last_media_blksize == 0) 2146 softc->last_media_blksize = 512; 2147 goto tryagain; 2148 } 2149 xpt_print_path(ccb->ccb_h.path); 2150 printf("unable to set variable blocksize\n"); 2151 goto exit; 2152 } 2153 } 2154 2155 /* 2156 * Now that we have the current block size, 2157 * set up some parameters for sastart's usage. 2158 */ 2159 if (softc->media_blksize) { 2160 softc->flags |= SA_FLAG_FIXED; 2161 if (powerof2(softc->media_blksize)) { 2162 softc->blk_shift = 2163 ffs(softc->media_blksize) - 1; 2164 softc->blk_mask = softc->media_blksize - 1; 2165 } else { 2166 softc->blk_mask = ~0; 2167 softc->blk_shift = 0; 2168 } 2169 } else { 2170 /* 2171 * The SCSI-3 spec allows 0 to mean "unspecified". 2172 * The SCSI-1 spec allows 0 to mean 'infinite'. 2173 * 2174 * Either works here. 2175 */ 2176 if (softc->max_blk == 0) { 2177 softc->max_blk = ~0; 2178 } 2179 softc->blk_shift = 0; 2180 if (softc->blk_gran != 0) { 2181 softc->blk_mask = softc->blk_gran - 1; 2182 } else { 2183 softc->blk_mask = 0; 2184 } 2185 } 2186 2187 if (write_protect) 2188 softc->flags |= SA_FLAG_TAPE_WP; 2189 2190 if (comp_supported) { 2191 if (softc->saved_comp_algorithm == 0) 2192 softc->saved_comp_algorithm = 2193 softc->comp_algorithm; 2194 softc->flags |= SA_FLAG_COMP_SUPP; 2195 if (comp_enabled) 2196 softc->flags |= SA_FLAG_COMP_ENABLED; 2197 } else 2198 softc->flags |= SA_FLAG_COMP_UNSUPP; 2199 2200 if ((softc->buffer_mode == SMH_SA_BUF_MODE_NOBUF) && 2201 (softc->quirks & SA_QUIRK_NO_MODESEL) == 0) { 2202 error = sasetparams(periph, SA_PARAM_BUFF_MODE, 0, 2203 0, 0, SF_NO_PRINT); 2204 if (error == 0) { 2205 softc->buffer_mode = SMH_SA_BUF_MODE_SIBUF; 2206 } else { 2207 xpt_print_path(ccb->ccb_h.path); 2208 printf("unable to set buffered mode\n"); 2209 } 2210 error = 0; /* not an error */ 2211 } 2212 2213 2214 if (error == 0) { 2215 softc->flags |= SA_FLAG_TAPE_MOUNTED; 2216 } 2217 exit: 2218 if (rblim != NULL) 2219 free(rblim, M_TEMP); 2220 2221 if (error != 0) { 2222 softc->dsreg = MTIO_DSREG_NIL; 2223 } else { 2224 softc->fileno = softc->blkno = 0; 2225 softc->dsreg = MTIO_DSREG_REST; 2226 } 2227 #ifdef SA_1FM_AT_EOD 2228 if ((softc->quirks & SA_QUIRK_2FM) == 0) 2229 softc->quirks |= SA_QUIRK_1FM; 2230 #else 2231 if ((softc->quirks & SA_QUIRK_1FM) == 0) 2232 softc->quirks |= SA_QUIRK_2FM; 2233 #endif 2234 } else 2235 xpt_release_ccb(ccb); 2236 2237 /* 2238 * If we return an error, we're not mounted any more, 2239 * so release any device reservation. 2240 */ 2241 if (error != 0) { 2242 (void) sareservereleaseunit(periph, FALSE); 2243 } else { 2244 /* 2245 * Clear I/O residual. 2246 */ 2247 softc->last_io_resid = 0; 2248 softc->last_ctl_resid = 0; 2249 } 2250 return (error); 2251 } 2252 2253 /* 2254 * How many filemarks do we need to write if we were to terminate the 2255 * tape session right now? Note that this can be a negative number 2256 */ 2257 2258 static int 2259 samarkswanted(struct cam_periph *periph) 2260 { 2261 int markswanted; 2262 struct sa_softc *softc; 2263 2264 softc = (struct sa_softc *)periph->softc; 2265 markswanted = 0; 2266 if ((softc->flags & SA_FLAG_TAPE_WRITTEN) != 0) { 2267 markswanted++; 2268 if (softc->quirks & SA_QUIRK_2FM) 2269 markswanted++; 2270 } 2271 markswanted -= softc->filemarks; 2272 return (markswanted); 2273 } 2274 2275 static int 2276 sacheckeod(struct cam_periph *periph) 2277 { 2278 int error; 2279 int markswanted; 2280 struct sa_softc *softc; 2281 2282 softc = (struct sa_softc *)periph->softc; 2283 markswanted = samarkswanted(periph); 2284 2285 if (markswanted > 0) { 2286 error = sawritefilemarks(periph, markswanted, FALSE); 2287 } else { 2288 error = 0; 2289 } 2290 return (error); 2291 } 2292 2293 static int 2294 saerror(union ccb *ccb, u_int32_t cflgs, u_int32_t sflgs) 2295 { 2296 static const char *toobig = 2297 "%d-byte tape record bigger than supplied buffer\n"; 2298 struct cam_periph *periph; 2299 struct sa_softc *softc; 2300 struct ccb_scsiio *csio; 2301 struct scsi_sense_data *sense; 2302 u_int32_t resid = 0; 2303 int32_t info = 0; 2304 cam_status status; 2305 int error_code, sense_key, asc, ascq, error, aqvalid; 2306 2307 periph = xpt_path_periph(ccb->ccb_h.path); 2308 softc = (struct sa_softc *)periph->softc; 2309 csio = &ccb->csio; 2310 sense = &csio->sense_data; 2311 scsi_extract_sense(sense, &error_code, &sense_key, &asc, &ascq); 2312 aqvalid = sense->extra_len >= 6; 2313 error = 0; 2314 2315 status = csio->ccb_h.status & CAM_STATUS_MASK; 2316 2317 /* 2318 * Calculate/latch up, any residuals... We do this in a funny 2-step 2319 * so we can print stuff here if we have CAM_DEBUG enabled for this 2320 * unit. 2321 */ 2322 if (status == CAM_SCSI_STATUS_ERROR) { 2323 if ((sense->error_code & SSD_ERRCODE_VALID) != 0) { 2324 info = (int32_t) scsi_4btoul(sense->info); 2325 resid = info; 2326 if ((softc->flags & SA_FLAG_FIXED) != 0) 2327 resid *= softc->media_blksize; 2328 } else { 2329 resid = csio->dxfer_len; 2330 info = resid; 2331 if ((softc->flags & SA_FLAG_FIXED) != 0) { 2332 if (softc->media_blksize) 2333 info /= softc->media_blksize; 2334 } 2335 } 2336 if (CCB_Type(csio) == SA_CCB_BUFFER_IO) { 2337 bcopy((caddr_t) sense, (caddr_t) &softc->last_io_sense, 2338 sizeof (struct scsi_sense_data)); 2339 bcopy(csio->cdb_io.cdb_bytes, softc->last_io_cdb, 2340 (int) csio->cdb_len); 2341 softc->last_io_resid = resid; 2342 softc->last_resid_was_io = 1; 2343 } else { 2344 bcopy((caddr_t) sense, (caddr_t) &softc->last_ctl_sense, 2345 sizeof (struct scsi_sense_data)); 2346 bcopy(csio->cdb_io.cdb_bytes, softc->last_ctl_cdb, 2347 (int) csio->cdb_len); 2348 softc->last_ctl_resid = resid; 2349 softc->last_resid_was_io = 0; 2350 } 2351 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("CDB[0]=0x%x Key 0x%x " 2352 "ASC/ASCQ 0x%x/0x%x CAM STATUS 0x%x flags 0x%x resid %d " 2353 "dxfer_len %d\n", csio->cdb_io.cdb_bytes[0] & 0xff, 2354 sense_key, asc, ascq, status, 2355 sense->flags & ~SSD_KEY_RESERVED, resid, csio->dxfer_len)); 2356 } else { 2357 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 2358 ("Cam Status 0x%x\n", status)); 2359 } 2360 2361 switch (status) { 2362 case CAM_REQ_CMP: 2363 return (0); 2364 case CAM_SCSI_STATUS_ERROR: 2365 /* 2366 * If a read/write command, we handle it here. 2367 */ 2368 if (CCB_Type(csio) != SA_CCB_WAITING) { 2369 break; 2370 } 2371 /* 2372 * If this was just EOM/EOP, Filemark, Setmark or ILI detected 2373 * on a non read/write command, we assume it's not an error 2374 * and propagate the residule and return. 2375 */ 2376 if ((aqvalid && asc == 0 && ascq > 0 && ascq <= 5) || 2377 (aqvalid == 0 && sense_key == SSD_KEY_NO_SENSE)) { 2378 csio->resid = resid; 2379 QFRLS(ccb); 2380 return (0); 2381 } 2382 /* 2383 * Otherwise, we let the common code handle this. 2384 */ 2385 return (cam_periph_error(ccb, cflgs, sflgs, &softc->saved_ccb)); 2386 2387 /* 2388 * XXX: To Be Fixed 2389 * We cannot depend upon CAM honoring retry counts for these. 2390 */ 2391 case CAM_SCSI_BUS_RESET: 2392 case CAM_BDR_SENT: 2393 if (ccb->ccb_h.retry_count <= 0) { 2394 return (EIO); 2395 break; 2396 } 2397 /* FALLTHROUGH */ 2398 default: 2399 return (cam_periph_error(ccb, cflgs, sflgs, &softc->saved_ccb)); 2400 } 2401 2402 /* 2403 * Handle filemark, end of tape, mismatched record sizes.... 2404 * From this point out, we're only handling read/write cases. 2405 * Handle writes && reads differently. 2406 */ 2407 2408 if (csio->cdb_io.cdb_bytes[0] == SA_WRITE) { 2409 if (sense_key == SSD_KEY_VOLUME_OVERFLOW) { 2410 csio->resid = resid; 2411 error = ENOSPC; 2412 } else if (sense->flags & SSD_EOM) { 2413 softc->flags |= SA_FLAG_EOM_PENDING; 2414 /* 2415 * Grotesque as it seems, the few times 2416 * I've actually seen a non-zero resid, 2417 * the tape drive actually lied and had 2418 * writtent all the data!. 2419 */ 2420 csio->resid = 0; 2421 } 2422 } else { 2423 csio->resid = resid; 2424 if (sense_key == SSD_KEY_BLANK_CHECK) { 2425 if (softc->quirks & SA_QUIRK_1FM) { 2426 error = 0; 2427 softc->flags |= SA_FLAG_EOM_PENDING; 2428 } else { 2429 error = EIO; 2430 } 2431 } else if (sense->flags & SSD_FILEMARK) { 2432 if (softc->flags & SA_FLAG_FIXED) { 2433 error = -1; 2434 softc->flags |= SA_FLAG_EOF_PENDING; 2435 } 2436 /* 2437 * Unconditionally, if we detected a filemark on a read, 2438 * mark that we've run moved a file ahead. 2439 */ 2440 if (softc->fileno != (daddr_t) -1) { 2441 softc->fileno++; 2442 softc->blkno = 0; 2443 csio->ccb_h.ccb_pflags |= SA_POSITION_UPDATED; 2444 } 2445 } 2446 } 2447 2448 /* 2449 * Incorrect Length usually applies to read, but can apply to writes. 2450 */ 2451 if (error == 0 && (sense->flags & SSD_ILI)) { 2452 if (info < 0) { 2453 xpt_print_path(csio->ccb_h.path); 2454 printf(toobig, csio->dxfer_len - info); 2455 csio->resid = csio->dxfer_len; 2456 error = EIO; 2457 } else { 2458 csio->resid = resid; 2459 if (softc->flags & SA_FLAG_FIXED) { 2460 softc->flags |= SA_FLAG_EIO_PENDING; 2461 } 2462 /* 2463 * Bump the block number if we hadn't seen a filemark. 2464 * Do this independent of errors (we've moved anyway). 2465 */ 2466 if ((sense->flags & SSD_FILEMARK) == 0) { 2467 if (softc->blkno != (daddr_t) -1) { 2468 softc->blkno++; 2469 csio->ccb_h.ccb_pflags |= 2470 SA_POSITION_UPDATED; 2471 } 2472 } 2473 } 2474 } 2475 2476 if (error <= 0) { 2477 /* 2478 * Unfreeze the queue if frozen as we're not returning anything 2479 * to our waiters that would indicate an I/O error has occurred 2480 * (yet). 2481 */ 2482 QFRLS(ccb); 2483 error = 0; 2484 } 2485 return (error); 2486 } 2487 2488 static int 2489 sagetparams(struct cam_periph *periph, sa_params params_to_get, 2490 u_int32_t *blocksize, u_int8_t *density, u_int32_t *numblocks, 2491 int *buff_mode, u_int8_t *write_protect, u_int8_t *speed, 2492 int *comp_supported, int *comp_enabled, u_int32_t *comp_algorithm, 2493 sa_comp_t *tcs) 2494 { 2495 union ccb *ccb; 2496 void *mode_buffer; 2497 struct scsi_mode_header_6 *mode_hdr; 2498 struct scsi_mode_blk_desc *mode_blk; 2499 int mode_buffer_len; 2500 struct sa_softc *softc; 2501 u_int8_t cpage; 2502 int error; 2503 cam_status status; 2504 2505 softc = (struct sa_softc *)periph->softc; 2506 ccb = cam_periph_getccb(periph, 1); 2507 if (softc->quirks & SA_QUIRK_NO_CPAGE) 2508 cpage = SA_DEVICE_CONFIGURATION_PAGE; 2509 else 2510 cpage = SA_DATA_COMPRESSION_PAGE; 2511 2512 retry: 2513 mode_buffer_len = sizeof(*mode_hdr) + sizeof(*mode_blk); 2514 2515 if (params_to_get & SA_PARAM_COMPRESSION) { 2516 if (softc->quirks & SA_QUIRK_NOCOMP) { 2517 *comp_supported = FALSE; 2518 params_to_get &= ~SA_PARAM_COMPRESSION; 2519 } else 2520 mode_buffer_len += sizeof (sa_comp_t); 2521 } 2522 2523 mode_buffer = malloc(mode_buffer_len, M_TEMP, M_INTWAIT | M_ZERO); 2524 mode_hdr = (struct scsi_mode_header_6 *)mode_buffer; 2525 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 2526 2527 /* it is safe to retry this */ 2528 scsi_mode_sense(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 2529 SMS_PAGE_CTRL_CURRENT, (params_to_get & SA_PARAM_COMPRESSION) ? 2530 cpage : SMS_VENDOR_SPECIFIC_PAGE, mode_buffer, mode_buffer_len, 2531 SSD_FULL_SIZE, SCSIOP_TIMEOUT); 2532 2533 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2534 &softc->device_stats); 2535 QFRLS(ccb); 2536 2537 status = ccb->ccb_h.status & CAM_STATUS_MASK; 2538 2539 if (error == EINVAL && (params_to_get & SA_PARAM_COMPRESSION) != 0) { 2540 /* 2541 * Hmm. Let's see if we can try another page... 2542 * If we've already done that, give up on compression 2543 * for this device and remember this for the future 2544 * and attempt the request without asking for compression 2545 * info. 2546 */ 2547 if (cpage == SA_DATA_COMPRESSION_PAGE) { 2548 cpage = SA_DEVICE_CONFIGURATION_PAGE; 2549 goto retry; 2550 } 2551 softc->quirks |= SA_QUIRK_NOCOMP; 2552 free(mode_buffer, M_TEMP); 2553 goto retry; 2554 } else if (status == CAM_SCSI_STATUS_ERROR) { 2555 /* Tell the user about the fatal error. */ 2556 scsi_sense_print(&ccb->csio); 2557 goto sagetparamsexit; 2558 } 2559 2560 /* 2561 * If the user only wants the compression information, and 2562 * the device doesn't send back the block descriptor, it's 2563 * no big deal. If the user wants more than just 2564 * compression, though, and the device doesn't pass back the 2565 * block descriptor, we need to send another mode sense to 2566 * get the block descriptor. 2567 */ 2568 if ((mode_hdr->blk_desc_len == 0) && 2569 (params_to_get & SA_PARAM_COMPRESSION) && 2570 (params_to_get & ~(SA_PARAM_COMPRESSION))) { 2571 2572 /* 2573 * Decrease the mode buffer length by the size of 2574 * the compression page, to make sure the data 2575 * there doesn't get overwritten. 2576 */ 2577 mode_buffer_len -= sizeof (sa_comp_t); 2578 2579 /* 2580 * Now move the compression page that we presumably 2581 * got back down the memory chunk a little bit so 2582 * it doesn't get spammed. 2583 */ 2584 bcopy(&mode_hdr[0], &mode_hdr[1], sizeof (sa_comp_t)); 2585 bzero(&mode_hdr[0], sizeof (mode_hdr[0])); 2586 2587 /* 2588 * Now, we issue another mode sense and just ask 2589 * for the block descriptor, etc. 2590 */ 2591 2592 scsi_mode_sense(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 2593 SMS_PAGE_CTRL_CURRENT, SMS_VENDOR_SPECIFIC_PAGE, 2594 mode_buffer, mode_buffer_len, SSD_FULL_SIZE, 2595 SCSIOP_TIMEOUT); 2596 2597 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2598 &softc->device_stats); 2599 QFRLS(ccb); 2600 2601 if (error != 0) 2602 goto sagetparamsexit; 2603 } 2604 2605 if (params_to_get & SA_PARAM_BLOCKSIZE) 2606 *blocksize = scsi_3btoul(mode_blk->blklen); 2607 2608 if (params_to_get & SA_PARAM_NUMBLOCKS) 2609 *numblocks = scsi_3btoul(mode_blk->nblocks); 2610 2611 if (params_to_get & SA_PARAM_BUFF_MODE) 2612 *buff_mode = mode_hdr->dev_spec & SMH_SA_BUF_MODE_MASK; 2613 2614 if (params_to_get & SA_PARAM_DENSITY) 2615 *density = mode_blk->density; 2616 2617 if (params_to_get & SA_PARAM_WP) 2618 *write_protect = (mode_hdr->dev_spec & SMH_SA_WP)? TRUE : FALSE; 2619 2620 if (params_to_get & SA_PARAM_SPEED) 2621 *speed = mode_hdr->dev_spec & SMH_SA_SPEED_MASK; 2622 2623 if (params_to_get & SA_PARAM_COMPRESSION) { 2624 sa_comp_t *ntcs = (sa_comp_t *) &mode_blk[1]; 2625 if (cpage == SA_DATA_COMPRESSION_PAGE) { 2626 struct scsi_data_compression_page *cp = &ntcs->dcomp; 2627 *comp_supported = 2628 (cp->dce_and_dcc & SA_DCP_DCC)? TRUE : FALSE; 2629 *comp_enabled = 2630 (cp->dce_and_dcc & SA_DCP_DCE)? TRUE : FALSE; 2631 *comp_algorithm = scsi_4btoul(cp->comp_algorithm); 2632 } else { 2633 struct scsi_dev_conf_page *cp = &ntcs->dconf; 2634 /* 2635 * We don't really know whether this device supports 2636 * Data Compression if the the algorithm field is 2637 * zero. Just say we do. 2638 */ 2639 *comp_supported = TRUE; 2640 *comp_enabled = 2641 (cp->sel_comp_alg != SA_COMP_NONE)? TRUE : FALSE; 2642 *comp_algorithm = cp->sel_comp_alg; 2643 } 2644 if (tcs != NULL) 2645 bcopy(ntcs, tcs, sizeof (sa_comp_t)); 2646 } 2647 2648 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 2649 int idx; 2650 char *xyz = mode_buffer; 2651 xpt_print_path(periph->path); 2652 printf("Mode Sense Data="); 2653 for (idx = 0; idx < mode_buffer_len; idx++) 2654 printf(" 0x%02x", xyz[idx] & 0xff); 2655 printf("\n"); 2656 } 2657 2658 sagetparamsexit: 2659 2660 xpt_release_ccb(ccb); 2661 free(mode_buffer, M_TEMP); 2662 return (error); 2663 } 2664 2665 /* 2666 * The purpose of this function is to set one of four different parameters 2667 * for a tape drive: 2668 * - blocksize 2669 * - density 2670 * - compression / compression algorithm 2671 * - buffering mode 2672 * 2673 * The assumption is that this will be called from saioctl(), and therefore 2674 * from a process context. Thus the waiting malloc calls below. If that 2675 * assumption ever changes, the malloc calls should be changed to be 2676 * NOWAIT mallocs. 2677 * 2678 * Any or all of the four parameters may be set when this function is 2679 * called. It should handle setting more than one parameter at once. 2680 */ 2681 static int 2682 sasetparams(struct cam_periph *periph, sa_params params_to_set, 2683 u_int32_t blocksize, u_int8_t density, u_int32_t calg, 2684 u_int32_t sense_flags) 2685 { 2686 struct sa_softc *softc; 2687 u_int32_t current_blocksize; 2688 u_int32_t current_calg; 2689 u_int8_t current_density; 2690 u_int8_t current_speed; 2691 int comp_enabled, comp_supported; 2692 void *mode_buffer; 2693 int mode_buffer_len; 2694 struct scsi_mode_header_6 *mode_hdr; 2695 struct scsi_mode_blk_desc *mode_blk; 2696 sa_comp_t *ccomp, *cpage; 2697 int buff_mode; 2698 union ccb *ccb = NULL; 2699 int error; 2700 2701 softc = (struct sa_softc *)periph->softc; 2702 2703 ccomp = malloc(sizeof (sa_comp_t), M_TEMP, M_INTWAIT); 2704 2705 /* 2706 * Since it doesn't make sense to set the number of blocks, or 2707 * write protection, we won't try to get the current value. We 2708 * always want to get the blocksize, so we can set it back to the 2709 * proper value. 2710 */ 2711 error = sagetparams(periph, 2712 params_to_set | SA_PARAM_BLOCKSIZE | SA_PARAM_SPEED, 2713 ¤t_blocksize, ¤t_density, NULL, &buff_mode, NULL, 2714 ¤t_speed, &comp_supported, &comp_enabled, 2715 ¤t_calg, ccomp); 2716 2717 if (error != 0) { 2718 free(ccomp, M_TEMP); 2719 return (error); 2720 } 2721 2722 mode_buffer_len = sizeof(*mode_hdr) + sizeof(*mode_blk); 2723 if (params_to_set & SA_PARAM_COMPRESSION) 2724 mode_buffer_len += sizeof (sa_comp_t); 2725 2726 mode_buffer = malloc(mode_buffer_len, M_TEMP, M_INTWAIT | M_ZERO); 2727 2728 mode_hdr = (struct scsi_mode_header_6 *)mode_buffer; 2729 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 2730 2731 ccb = cam_periph_getccb(periph, 1); 2732 2733 retry: 2734 2735 if (params_to_set & SA_PARAM_COMPRESSION) { 2736 if (mode_blk) { 2737 cpage = (sa_comp_t *)&mode_blk[1]; 2738 } else { 2739 cpage = (sa_comp_t *)&mode_hdr[1]; 2740 } 2741 bcopy(ccomp, cpage, sizeof (sa_comp_t)); 2742 cpage->hdr.pagecode &= ~0x80; 2743 } else 2744 cpage = NULL; 2745 2746 /* 2747 * If the caller wants us to set the blocksize, use the one they 2748 * pass in. Otherwise, use the blocksize we got back from the 2749 * mode select above. 2750 */ 2751 if (mode_blk) { 2752 if (params_to_set & SA_PARAM_BLOCKSIZE) 2753 scsi_ulto3b(blocksize, mode_blk->blklen); 2754 else 2755 scsi_ulto3b(current_blocksize, mode_blk->blklen); 2756 2757 /* 2758 * Set density if requested, else preserve old density. 2759 * SCSI_SAME_DENSITY only applies to SCSI-2 or better 2760 * devices, else density we've latched up in our softc. 2761 */ 2762 if (params_to_set & SA_PARAM_DENSITY) { 2763 mode_blk->density = density; 2764 } else if (softc->scsi_rev > SCSI_REV_CCS) { 2765 mode_blk->density = SCSI_SAME_DENSITY; 2766 } else { 2767 mode_blk->density = softc->media_density; 2768 } 2769 } 2770 2771 /* 2772 * For mode selects, these two fields must be zero. 2773 */ 2774 mode_hdr->data_length = 0; 2775 mode_hdr->medium_type = 0; 2776 2777 /* set the speed to the current value */ 2778 mode_hdr->dev_spec = current_speed; 2779 2780 /* set single-initiator buffering mode */ 2781 mode_hdr->dev_spec |= SMH_SA_BUF_MODE_SIBUF; 2782 2783 if (mode_blk) 2784 mode_hdr->blk_desc_len = sizeof(struct scsi_mode_blk_desc); 2785 else 2786 mode_hdr->blk_desc_len = 0; 2787 2788 /* 2789 * First, if the user wants us to set the compression algorithm or 2790 * just turn compression on, check to make sure that this drive 2791 * supports compression. 2792 */ 2793 if (params_to_set & SA_PARAM_COMPRESSION) { 2794 /* 2795 * If the compression algorithm is 0, disable compression. 2796 * If the compression algorithm is non-zero, enable 2797 * compression and set the compression type to the 2798 * specified compression algorithm, unless the algorithm is 2799 * MT_COMP_ENABLE. In that case, we look at the 2800 * compression algorithm that is currently set and if it is 2801 * non-zero, we leave it as-is. If it is zero, and we have 2802 * saved a compression algorithm from a time when 2803 * compression was enabled before, set the compression to 2804 * the saved value. 2805 */ 2806 switch (ccomp->hdr.pagecode & ~0x80) { 2807 case SA_DATA_COMPRESSION_PAGE: 2808 if (ccomp->dcomp.dce_and_dcc & SA_DCP_DCC) { 2809 struct scsi_data_compression_page *dcp = &cpage->dcomp; 2810 if (calg == 0) { 2811 /* 2812 * Disable compression, but leave the 2813 * decompression and the capability bit 2814 * alone. 2815 */ 2816 dcp->dce_and_dcc = SA_DCP_DCC; 2817 dcp->dde_and_red |= SA_DCP_DDE; 2818 break; 2819 } 2820 /* enable compression && decompression */ 2821 dcp->dce_and_dcc = SA_DCP_DCE | SA_DCP_DCC; 2822 dcp->dde_and_red |= SA_DCP_DDE; 2823 /* 2824 * If there, use compression algorithm from caller. 2825 * Otherwise, if there's a saved compression algorithm 2826 * and there is no current algorithm, use the saved 2827 * algorithm. Else parrot back what we got and hope 2828 * for the best. 2829 */ 2830 if (calg != MT_COMP_ENABLE) { 2831 scsi_ulto4b(calg, dcp->comp_algorithm); 2832 scsi_ulto4b(calg, dcp->decomp_algorithm); 2833 } else if (scsi_4btoul(dcp->comp_algorithm) == 0 && 2834 softc->saved_comp_algorithm != 0) { 2835 scsi_ulto4b(softc->saved_comp_algorithm, 2836 dcp->comp_algorithm); 2837 scsi_ulto4b(softc->saved_comp_algorithm, 2838 dcp->decomp_algorithm); 2839 } 2840 break; 2841 } 2842 case SA_DEVICE_CONFIGURATION_PAGE: 2843 { 2844 struct scsi_dev_conf_page *dcp = &cpage->dconf; 2845 if (calg == 0) { 2846 dcp->sel_comp_alg = SA_COMP_NONE; 2847 break; 2848 } 2849 if (calg != MT_COMP_ENABLE) { 2850 dcp->sel_comp_alg = calg; 2851 } else if (dcp->sel_comp_alg == SA_COMP_NONE && 2852 softc->saved_comp_algorithm != 0) { 2853 dcp->sel_comp_alg = softc->saved_comp_algorithm; 2854 } 2855 break; 2856 } 2857 default: 2858 /* 2859 * The drive doesn't seem to support compression, 2860 * so turn off the set compression bit. 2861 */ 2862 params_to_set &= ~SA_PARAM_COMPRESSION; 2863 xpt_print_path(periph->path); 2864 printf("device does not seem to support compression\n"); 2865 2866 /* 2867 * If that was the only thing the user wanted us to set, 2868 * clean up allocated resources and return with 2869 * 'operation not supported'. 2870 */ 2871 if (params_to_set == SA_PARAM_NONE) { 2872 free(mode_buffer, M_TEMP); 2873 xpt_release_ccb(ccb); 2874 return (ENODEV); 2875 } 2876 2877 /* 2878 * That wasn't the only thing the user wanted us to set. 2879 * So, decrease the stated mode buffer length by the 2880 * size of the compression mode page. 2881 */ 2882 mode_buffer_len -= sizeof(sa_comp_t); 2883 } 2884 } 2885 2886 /* It is safe to retry this operation */ 2887 scsi_mode_select(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, 2888 (params_to_set & SA_PARAM_COMPRESSION)? TRUE : FALSE, 2889 FALSE, mode_buffer, mode_buffer_len, SSD_FULL_SIZE, SCSIOP_TIMEOUT); 2890 2891 error = cam_periph_runccb(ccb, saerror, 0, 2892 sense_flags, &softc->device_stats); 2893 QFRLS(ccb); 2894 2895 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 2896 int idx; 2897 char *xyz = mode_buffer; 2898 xpt_print_path(periph->path); 2899 printf("Err%d, Mode Select Data=", error); 2900 for (idx = 0; idx < mode_buffer_len; idx++) 2901 printf(" 0x%02x", xyz[idx] & 0xff); 2902 printf("\n"); 2903 } 2904 2905 2906 if (error) { 2907 /* 2908 * If we can, try without setting density/blocksize. 2909 */ 2910 if (mode_blk) { 2911 if ((params_to_set & 2912 (SA_PARAM_DENSITY|SA_PARAM_BLOCKSIZE)) == 0) { 2913 mode_blk = NULL; 2914 goto retry; 2915 } 2916 } else { 2917 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 2918 cpage = (sa_comp_t *)&mode_blk[1]; 2919 } 2920 2921 /* 2922 * If we were setting the blocksize, and that failed, we 2923 * want to set it to its original value. If we weren't 2924 * setting the blocksize, we don't want to change it. 2925 */ 2926 scsi_ulto3b(current_blocksize, mode_blk->blklen); 2927 2928 /* 2929 * Set density if requested, else preserve old density. 2930 * SCSI_SAME_DENSITY only applies to SCSI-2 or better 2931 * devices, else density we've latched up in our softc. 2932 */ 2933 if (params_to_set & SA_PARAM_DENSITY) { 2934 mode_blk->density = current_density; 2935 } else if (softc->scsi_rev > SCSI_REV_CCS) { 2936 mode_blk->density = SCSI_SAME_DENSITY; 2937 } else { 2938 mode_blk->density = softc->media_density; 2939 } 2940 2941 if (params_to_set & SA_PARAM_COMPRESSION) 2942 bcopy(ccomp, cpage, sizeof (sa_comp_t)); 2943 2944 /* 2945 * The retry count is the only CCB field that might have been 2946 * changed that we care about, so reset it back to 1. 2947 */ 2948 ccb->ccb_h.retry_count = 1; 2949 cam_periph_runccb(ccb, saerror, 0, sense_flags, 2950 &softc->device_stats); 2951 QFRLS(ccb); 2952 } 2953 2954 xpt_release_ccb(ccb); 2955 2956 if (ccomp != NULL) 2957 free(ccomp, M_TEMP); 2958 2959 if (params_to_set & SA_PARAM_COMPRESSION) { 2960 if (error) { 2961 softc->flags &= ~SA_FLAG_COMP_ENABLED; 2962 /* 2963 * Even if we get an error setting compression, 2964 * do not say that we don't support it. We could 2965 * have been wrong, or it may be media specific. 2966 * softc->flags &= ~SA_FLAG_COMP_SUPP; 2967 */ 2968 softc->saved_comp_algorithm = softc->comp_algorithm; 2969 softc->comp_algorithm = 0; 2970 } else { 2971 softc->flags |= SA_FLAG_COMP_ENABLED; 2972 softc->comp_algorithm = calg; 2973 } 2974 } 2975 2976 free(mode_buffer, M_TEMP); 2977 return (error); 2978 } 2979 2980 static void 2981 saprevent(struct cam_periph *periph, int action) 2982 { 2983 struct sa_softc *softc; 2984 union ccb *ccb; 2985 int error, sf; 2986 2987 softc = (struct sa_softc *)periph->softc; 2988 2989 if ((action == PR_ALLOW) && (softc->flags & SA_FLAG_TAPE_LOCKED) == 0) 2990 return; 2991 if ((action == PR_PREVENT) && (softc->flags & SA_FLAG_TAPE_LOCKED) != 0) 2992 return; 2993 2994 /* 2995 * We can be quiet about illegal requests. 2996 */ 2997 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 2998 sf = 0; 2999 } else 3000 sf = SF_QUIET_IR; 3001 3002 ccb = cam_periph_getccb(periph, 1); 3003 3004 /* It is safe to retry this operation */ 3005 scsi_prevent(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, action, 3006 SSD_FULL_SIZE, SCSIOP_TIMEOUT); 3007 3008 error = cam_periph_runccb(ccb, saerror, 0, sf, &softc->device_stats); 3009 QFRLS(ccb); 3010 if (error == 0) { 3011 if (action == PR_ALLOW) 3012 softc->flags &= ~SA_FLAG_TAPE_LOCKED; 3013 else 3014 softc->flags |= SA_FLAG_TAPE_LOCKED; 3015 } 3016 3017 xpt_release_ccb(ccb); 3018 } 3019 3020 static int 3021 sarewind(struct cam_periph *periph) 3022 { 3023 union ccb *ccb; 3024 struct sa_softc *softc; 3025 int error; 3026 3027 softc = (struct sa_softc *)periph->softc; 3028 3029 ccb = cam_periph_getccb(periph, 1); 3030 3031 /* It is safe to retry this operation */ 3032 scsi_rewind(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 3033 SSD_FULL_SIZE, REWIND_TIMEOUT); 3034 3035 softc->dsreg = MTIO_DSREG_REW; 3036 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 3037 softc->dsreg = MTIO_DSREG_REST; 3038 3039 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3040 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 3041 3042 xpt_release_ccb(ccb); 3043 if (error == 0) 3044 softc->fileno = softc->blkno = (daddr_t) 0; 3045 else 3046 softc->fileno = softc->blkno = (daddr_t) -1; 3047 return (error); 3048 } 3049 3050 static int 3051 saspace(struct cam_periph *periph, int count, scsi_space_code code) 3052 { 3053 union ccb *ccb; 3054 struct sa_softc *softc; 3055 int error; 3056 3057 softc = (struct sa_softc *)periph->softc; 3058 3059 ccb = cam_periph_getccb(periph, 1); 3060 3061 /* This cannot be retried */ 3062 3063 scsi_space(&ccb->csio, 0, sadone, MSG_SIMPLE_Q_TAG, code, count, 3064 SSD_FULL_SIZE, SPACE_TIMEOUT); 3065 3066 /* 3067 * Clear residual because we will be using it. 3068 */ 3069 softc->last_ctl_resid = 0; 3070 3071 softc->dsreg = (count < 0)? MTIO_DSREG_REV : MTIO_DSREG_FWD; 3072 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 3073 softc->dsreg = MTIO_DSREG_REST; 3074 3075 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3076 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 3077 3078 xpt_release_ccb(ccb); 3079 3080 /* 3081 * If a spacing operation has failed, we need to invalidate 3082 * this mount. 3083 * 3084 * If the spacing operation was setmarks or to end of recorded data, 3085 * we no longer know our relative position. 3086 * 3087 * If the spacing operations was spacing files in reverse, we 3088 * take account of the residual, but still check against less 3089 * than zero- if we've gone negative, we must have hit BOT. 3090 * 3091 * If the spacing operations was spacing records in reverse and 3092 * we have a residual, we've either hit BOT or hit a filemark. 3093 * In the former case, we know our new record number (0). In 3094 * the latter case, we have absolutely no idea what the real 3095 * record number is- we've stopped between the end of the last 3096 * record in the previous file and the filemark that stopped 3097 * our spacing backwards. 3098 */ 3099 if (error) { 3100 softc->fileno = softc->blkno = (daddr_t) -1; 3101 } else if (code == SS_SETMARKS || code == SS_EOD) { 3102 softc->fileno = softc->blkno = (daddr_t) -1; 3103 } else if (code == SS_FILEMARKS && softc->fileno != (daddr_t) -1) { 3104 softc->fileno += (count - softc->last_ctl_resid); 3105 if (softc->fileno < 0) /* we must of hit BOT */ 3106 softc->fileno = 0; 3107 softc->blkno = 0; 3108 } else if (code == SS_BLOCKS && softc->blkno != (daddr_t) -1) { 3109 softc->blkno += (count - softc->last_ctl_resid); 3110 if (count < 0) { 3111 if (softc->last_ctl_resid || softc->blkno < 0) { 3112 if (softc->fileno == 0) { 3113 softc->blkno = 0; 3114 } else { 3115 softc->blkno = (daddr_t) -1; 3116 } 3117 } 3118 } 3119 } 3120 return (error); 3121 } 3122 3123 static int 3124 sawritefilemarks(struct cam_periph *periph, int nmarks, int setmarks) 3125 { 3126 union ccb *ccb; 3127 struct sa_softc *softc; 3128 int error, nwm = 0; 3129 3130 softc = (struct sa_softc *)periph->softc; 3131 3132 ccb = cam_periph_getccb(periph, 1); 3133 /* 3134 * Clear residual because we will be using it. 3135 */ 3136 softc->last_ctl_resid = 0; 3137 3138 softc->dsreg = MTIO_DSREG_FMK; 3139 /* this *must* not be retried */ 3140 scsi_write_filemarks(&ccb->csio, 0, sadone, MSG_SIMPLE_Q_TAG, 3141 FALSE, setmarks, nmarks, SSD_FULL_SIZE, IO_TIMEOUT); 3142 softc->dsreg = MTIO_DSREG_REST; 3143 3144 3145 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 3146 3147 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3148 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 3149 3150 if (error == 0 && nmarks) { 3151 struct sa_softc *softc = (struct sa_softc *)periph->softc; 3152 nwm = nmarks - softc->last_ctl_resid; 3153 softc->filemarks += nwm; 3154 } 3155 3156 xpt_release_ccb(ccb); 3157 3158 /* 3159 * Update relative positions (if we're doing that). 3160 */ 3161 if (error) { 3162 softc->fileno = softc->blkno = (daddr_t) -1; 3163 } else if (softc->fileno != (daddr_t) -1) { 3164 softc->fileno += nwm; 3165 softc->blkno = 0; 3166 } 3167 return (error); 3168 } 3169 3170 static int 3171 sardpos(struct cam_periph *periph, int hard, u_int32_t *blkptr) 3172 { 3173 struct scsi_tape_position_data loc; 3174 union ccb *ccb; 3175 struct sa_softc *softc = (struct sa_softc *)periph->softc; 3176 int error; 3177 3178 /* 3179 * We try and flush any buffered writes here if we were writing 3180 * and we're trying to get hardware block position. It eats 3181 * up performance substantially, but I'm wary of drive firmware. 3182 * 3183 * I think that *logical* block position is probably okay- 3184 * but hardware block position might have to wait for data 3185 * to hit media to be valid. Caveat Emptor. 3186 */ 3187 3188 if (hard && (softc->flags & SA_FLAG_TAPE_WRITTEN)) { 3189 error = sawritefilemarks(periph, 0, 0); 3190 if (error && error != EACCES) 3191 return (error); 3192 } 3193 3194 ccb = cam_periph_getccb(periph, 1); 3195 scsi_read_position(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, 3196 hard, &loc, SSD_FULL_SIZE, SCSIOP_TIMEOUT); 3197 softc->dsreg = MTIO_DSREG_RBSY; 3198 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 3199 softc->dsreg = MTIO_DSREG_REST; 3200 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3201 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, 0); 3202 3203 if (error == 0) { 3204 if (loc.flags & SA_RPOS_UNCERTAIN) { 3205 error = EINVAL; /* nothing is certain */ 3206 } else { 3207 *blkptr = scsi_4btoul(loc.firstblk); 3208 } 3209 } 3210 3211 xpt_release_ccb(ccb); 3212 return (error); 3213 } 3214 3215 static int 3216 sasetpos(struct cam_periph *periph, int hard, u_int32_t *blkptr) 3217 { 3218 union ccb *ccb; 3219 struct sa_softc *softc; 3220 int error; 3221 3222 /* 3223 * We used to try and flush any buffered writes here. 3224 * Now we push this onto user applications to either 3225 * flush the pending writes themselves (via a zero count 3226 * WRITE FILEMARKS command) or they can trust their tape 3227 * drive to do this correctly for them. 3228 */ 3229 3230 softc = (struct sa_softc *)periph->softc; 3231 ccb = cam_periph_getccb(periph, 1); 3232 3233 3234 scsi_set_position(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, 3235 hard, *blkptr, SSD_FULL_SIZE, SPACE_TIMEOUT); 3236 3237 3238 softc->dsreg = MTIO_DSREG_POS; 3239 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 3240 softc->dsreg = MTIO_DSREG_REST; 3241 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3242 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, 0); 3243 xpt_release_ccb(ccb); 3244 /* 3245 * Note relative file && block number position as now unknown. 3246 */ 3247 softc->fileno = softc->blkno = (daddr_t) -1; 3248 return (error); 3249 } 3250 3251 static int 3252 saretension(struct cam_periph *periph) 3253 { 3254 union ccb *ccb; 3255 struct sa_softc *softc; 3256 int error; 3257 3258 softc = (struct sa_softc *)periph->softc; 3259 3260 ccb = cam_periph_getccb(periph, 1); 3261 3262 /* It is safe to retry this operation */ 3263 scsi_load_unload(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 3264 FALSE, TRUE, TRUE, SSD_FULL_SIZE, ERASE_TIMEOUT); 3265 3266 softc->dsreg = MTIO_DSREG_TEN; 3267 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 3268 softc->dsreg = MTIO_DSREG_REST; 3269 3270 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3271 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 3272 xpt_release_ccb(ccb); 3273 if (error == 0) 3274 softc->fileno = softc->blkno = (daddr_t) 0; 3275 else 3276 softc->fileno = softc->blkno = (daddr_t) -1; 3277 return (error); 3278 } 3279 3280 static int 3281 sareservereleaseunit(struct cam_periph *periph, int reserve) 3282 { 3283 union ccb *ccb; 3284 struct sa_softc *softc; 3285 int error; 3286 3287 softc = (struct sa_softc *)periph->softc; 3288 ccb = cam_periph_getccb(periph, 1); 3289 3290 /* It is safe to retry this operation */ 3291 scsi_reserve_release_unit(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, 3292 FALSE, 0, SSD_FULL_SIZE, SCSIOP_TIMEOUT, reserve); 3293 softc->dsreg = MTIO_DSREG_RBSY; 3294 error = cam_periph_runccb(ccb, saerror, 0, 3295 SF_RETRY_UA | SF_NO_PRINT, &softc->device_stats); 3296 softc->dsreg = MTIO_DSREG_REST; 3297 QFRLS(ccb); 3298 xpt_release_ccb(ccb); 3299 3300 /* 3301 * If the error was Illegal Request, then the device doesn't support 3302 * RESERVE/RELEASE. This is not an error. 3303 */ 3304 if (error == EINVAL) { 3305 error = 0; 3306 } 3307 3308 return (error); 3309 } 3310 3311 static int 3312 saloadunload(struct cam_periph *periph, int load) 3313 { 3314 union ccb *ccb; 3315 struct sa_softc *softc; 3316 int error; 3317 3318 softc = (struct sa_softc *)periph->softc; 3319 3320 ccb = cam_periph_getccb(periph, 1); 3321 3322 /* It is safe to retry this operation */ 3323 scsi_load_unload(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 3324 FALSE, FALSE, load, SSD_FULL_SIZE, REWIND_TIMEOUT); 3325 3326 softc->dsreg = (load)? MTIO_DSREG_LD : MTIO_DSREG_UNL; 3327 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 3328 softc->dsreg = MTIO_DSREG_REST; 3329 QFRLS(ccb); 3330 xpt_release_ccb(ccb); 3331 3332 if (error || load == 0) 3333 softc->fileno = softc->blkno = (daddr_t) -1; 3334 else if (error == 0) 3335 softc->fileno = softc->blkno = (daddr_t) 0; 3336 return (error); 3337 } 3338 3339 static int 3340 saerase(struct cam_periph *periph, int longerase) 3341 { 3342 3343 union ccb *ccb; 3344 struct sa_softc *softc; 3345 int error; 3346 3347 softc = (struct sa_softc *)periph->softc; 3348 3349 ccb = cam_periph_getccb(periph, 1); 3350 3351 scsi_erase(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, FALSE, longerase, 3352 SSD_FULL_SIZE, ERASE_TIMEOUT); 3353 3354 softc->dsreg = MTIO_DSREG_ZER; 3355 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 3356 softc->dsreg = MTIO_DSREG_REST; 3357 3358 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3359 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 3360 xpt_release_ccb(ccb); 3361 return (error); 3362 } 3363 3364 #endif /* _KERNEL */ 3365 3366 /* 3367 * Read tape block limits command. 3368 */ 3369 void 3370 scsi_read_block_limits(struct ccb_scsiio *csio, u_int32_t retries, 3371 void (*cbfcnp)(struct cam_periph *, union ccb *), 3372 u_int8_t tag_action, 3373 struct scsi_read_block_limits_data *rlimit_buf, 3374 u_int8_t sense_len, u_int32_t timeout) 3375 { 3376 struct scsi_read_block_limits *scsi_cmd; 3377 3378 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_IN, tag_action, 3379 (u_int8_t *)rlimit_buf, sizeof(*rlimit_buf), sense_len, 3380 sizeof(*scsi_cmd), timeout); 3381 3382 scsi_cmd = (struct scsi_read_block_limits *)&csio->cdb_io.cdb_bytes; 3383 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3384 scsi_cmd->opcode = READ_BLOCK_LIMITS; 3385 } 3386 3387 void 3388 scsi_sa_read_write(struct ccb_scsiio *csio, u_int32_t retries, 3389 void (*cbfcnp)(struct cam_periph *, union ccb *), 3390 u_int8_t tag_action, int readop, int sli, 3391 int fixed, u_int32_t length, u_int8_t *data_ptr, 3392 u_int32_t dxfer_len, u_int8_t sense_len, u_int32_t timeout) 3393 { 3394 struct scsi_sa_rw *scsi_cmd; 3395 3396 scsi_cmd = (struct scsi_sa_rw *)&csio->cdb_io.cdb_bytes; 3397 scsi_cmd->opcode = readop ? SA_READ : SA_WRITE; 3398 scsi_cmd->sli_fixed = 0; 3399 if (sli && readop) 3400 scsi_cmd->sli_fixed |= SAR_SLI; 3401 if (fixed) 3402 scsi_cmd->sli_fixed |= SARW_FIXED; 3403 scsi_ulto3b(length, scsi_cmd->length); 3404 scsi_cmd->control = 0; 3405 3406 cam_fill_csio(csio, retries, cbfcnp, readop ? CAM_DIR_IN : CAM_DIR_OUT, 3407 tag_action, data_ptr, dxfer_len, sense_len, 3408 sizeof(*scsi_cmd), timeout); 3409 } 3410 3411 void 3412 scsi_load_unload(struct ccb_scsiio *csio, u_int32_t retries, 3413 void (*cbfcnp)(struct cam_periph *, union ccb *), 3414 u_int8_t tag_action, int immediate, int eot, 3415 int reten, int load, u_int8_t sense_len, 3416 u_int32_t timeout) 3417 { 3418 struct scsi_load_unload *scsi_cmd; 3419 3420 scsi_cmd = (struct scsi_load_unload *)&csio->cdb_io.cdb_bytes; 3421 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3422 scsi_cmd->opcode = LOAD_UNLOAD; 3423 if (immediate) 3424 scsi_cmd->immediate = SLU_IMMED; 3425 if (eot) 3426 scsi_cmd->eot_reten_load |= SLU_EOT; 3427 if (reten) 3428 scsi_cmd->eot_reten_load |= SLU_RETEN; 3429 if (load) 3430 scsi_cmd->eot_reten_load |= SLU_LOAD; 3431 3432 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, 3433 NULL, 0, sense_len, sizeof(*scsi_cmd), timeout); 3434 } 3435 3436 void 3437 scsi_rewind(struct ccb_scsiio *csio, u_int32_t retries, 3438 void (*cbfcnp)(struct cam_periph *, union ccb *), 3439 u_int8_t tag_action, int immediate, u_int8_t sense_len, 3440 u_int32_t timeout) 3441 { 3442 struct scsi_rewind *scsi_cmd; 3443 3444 scsi_cmd = (struct scsi_rewind *)&csio->cdb_io.cdb_bytes; 3445 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3446 scsi_cmd->opcode = REWIND; 3447 if (immediate) 3448 scsi_cmd->immediate = SREW_IMMED; 3449 3450 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3451 0, sense_len, sizeof(*scsi_cmd), timeout); 3452 } 3453 3454 void 3455 scsi_space(struct ccb_scsiio *csio, u_int32_t retries, 3456 void (*cbfcnp)(struct cam_periph *, union ccb *), 3457 u_int8_t tag_action, scsi_space_code code, 3458 u_int32_t count, u_int8_t sense_len, u_int32_t timeout) 3459 { 3460 struct scsi_space *scsi_cmd; 3461 3462 scsi_cmd = (struct scsi_space *)&csio->cdb_io.cdb_bytes; 3463 scsi_cmd->opcode = SPACE; 3464 scsi_cmd->code = code; 3465 scsi_ulto3b(count, scsi_cmd->count); 3466 scsi_cmd->control = 0; 3467 3468 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3469 0, sense_len, sizeof(*scsi_cmd), timeout); 3470 } 3471 3472 void 3473 scsi_write_filemarks(struct ccb_scsiio *csio, u_int32_t retries, 3474 void (*cbfcnp)(struct cam_periph *, union ccb *), 3475 u_int8_t tag_action, int immediate, int setmark, 3476 u_int32_t num_marks, u_int8_t sense_len, 3477 u_int32_t timeout) 3478 { 3479 struct scsi_write_filemarks *scsi_cmd; 3480 3481 scsi_cmd = (struct scsi_write_filemarks *)&csio->cdb_io.cdb_bytes; 3482 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3483 scsi_cmd->opcode = WRITE_FILEMARKS; 3484 if (immediate) 3485 scsi_cmd->byte2 |= SWFMRK_IMMED; 3486 if (setmark) 3487 scsi_cmd->byte2 |= SWFMRK_WSMK; 3488 3489 scsi_ulto3b(num_marks, scsi_cmd->num_marks); 3490 3491 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3492 0, sense_len, sizeof(*scsi_cmd), timeout); 3493 } 3494 3495 /* 3496 * The reserve and release unit commands differ only by their opcodes. 3497 */ 3498 void 3499 scsi_reserve_release_unit(struct ccb_scsiio *csio, u_int32_t retries, 3500 void (*cbfcnp)(struct cam_periph *, union ccb *), 3501 u_int8_t tag_action, int third_party, 3502 int third_party_id, u_int8_t sense_len, 3503 u_int32_t timeout, int reserve) 3504 { 3505 struct scsi_reserve_release_unit *scsi_cmd; 3506 3507 scsi_cmd = (struct scsi_reserve_release_unit *)&csio->cdb_io.cdb_bytes; 3508 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3509 3510 if (reserve) 3511 scsi_cmd->opcode = RESERVE_UNIT; 3512 else 3513 scsi_cmd->opcode = RELEASE_UNIT; 3514 3515 if (third_party) { 3516 scsi_cmd->lun_thirdparty |= SRRU_3RD_PARTY; 3517 scsi_cmd->lun_thirdparty |= 3518 ((third_party_id << SRRU_3RD_SHAMT) & SRRU_3RD_MASK); 3519 } 3520 3521 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3522 0, sense_len, sizeof(*scsi_cmd), timeout); 3523 } 3524 3525 void 3526 scsi_erase(struct ccb_scsiio *csio, u_int32_t retries, 3527 void (*cbfcnp)(struct cam_periph *, union ccb *), 3528 u_int8_t tag_action, int immediate, int long_erase, 3529 u_int8_t sense_len, u_int32_t timeout) 3530 { 3531 struct scsi_erase *scsi_cmd; 3532 3533 scsi_cmd = (struct scsi_erase *)&csio->cdb_io.cdb_bytes; 3534 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3535 3536 scsi_cmd->opcode = ERASE; 3537 3538 if (immediate) 3539 scsi_cmd->lun_imm_long |= SE_IMMED; 3540 3541 if (long_erase) 3542 scsi_cmd->lun_imm_long |= SE_LONG; 3543 3544 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3545 0, sense_len, sizeof(*scsi_cmd), timeout); 3546 } 3547 3548 /* 3549 * Read Tape Position command. 3550 */ 3551 void 3552 scsi_read_position(struct ccb_scsiio *csio, u_int32_t retries, 3553 void (*cbfcnp)(struct cam_periph *, union ccb *), 3554 u_int8_t tag_action, int hardsoft, 3555 struct scsi_tape_position_data *sbp, 3556 u_int8_t sense_len, u_int32_t timeout) 3557 { 3558 struct scsi_tape_read_position *scmd; 3559 3560 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_IN, tag_action, 3561 (u_int8_t *)sbp, sizeof (*sbp), sense_len, sizeof(*scmd), timeout); 3562 scmd = (struct scsi_tape_read_position *)&csio->cdb_io.cdb_bytes; 3563 bzero(scmd, sizeof(*scmd)); 3564 scmd->opcode = READ_POSITION; 3565 scmd->byte1 = hardsoft; 3566 } 3567 3568 /* 3569 * Set Tape Position command. 3570 */ 3571 void 3572 scsi_set_position(struct ccb_scsiio *csio, u_int32_t retries, 3573 void (*cbfcnp)(struct cam_periph *, union ccb *), 3574 u_int8_t tag_action, int hardsoft, u_int32_t blkno, 3575 u_int8_t sense_len, u_int32_t timeout) 3576 { 3577 struct scsi_tape_locate *scmd; 3578 3579 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, 3580 (u_int8_t *)NULL, 0, sense_len, sizeof(*scmd), timeout); 3581 scmd = (struct scsi_tape_locate *)&csio->cdb_io.cdb_bytes; 3582 bzero(scmd, sizeof(*scmd)); 3583 scmd->opcode = LOCATE; 3584 if (hardsoft) 3585 scmd->byte1 |= SA_SPOS_BT; 3586 scsi_ulto4b(blkno, scmd->blkaddr); 3587 } 3588