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 1.13 2005/06/02 20:40:31 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 #include <sys/thread2.h> 50 #endif 51 #include <sys/devicestat.h> 52 #include <machine/limits.h> 53 54 #ifndef _KERNEL 55 #include <stdio.h> 56 #include <string.h> 57 #endif 58 59 #include "../cam.h" 60 #include "../cam_ccb.h" 61 #include "../cam_extend.h" 62 #include "../cam_periph.h" 63 #include "../cam_xpt_periph.h" 64 #include "../cam_debug.h" 65 66 #include "scsi_all.h" 67 #include "scsi_message.h" 68 #include "scsi_sa.h" 69 70 #ifdef _KERNEL 71 72 #include <opt_sa.h> 73 74 #ifndef SA_IO_TIMEOUT 75 #define SA_IO_TIMEOUT 4 76 #endif 77 #ifndef SA_SPACE_TIMEOUT 78 #define SA_SPACE_TIMEOUT 1 * 60 79 #endif 80 #ifndef SA_REWIND_TIMEOUT 81 #define SA_REWIND_TIMEOUT 2 * 60 82 #endif 83 #ifndef SA_ERASE_TIMEOUT 84 #define SA_ERASE_TIMEOUT 4 * 60 85 #endif 86 87 #define SCSIOP_TIMEOUT (60 * 1000) /* not an option */ 88 89 #define IO_TIMEOUT (SA_IO_TIMEOUT * 60 * 1000) 90 #define REWIND_TIMEOUT (SA_REWIND_TIMEOUT * 60 * 1000) 91 #define ERASE_TIMEOUT (SA_ERASE_TIMEOUT * 60 * 1000) 92 #define SPACE_TIMEOUT (SA_SPACE_TIMEOUT * 60 * 1000) 93 94 /* 95 * Additional options that can be set for config: SA_1FM_AT_EOT 96 */ 97 98 #ifndef UNUSED_PARAMETER 99 #define UNUSED_PARAMETER(x) x = x 100 #endif 101 102 #define QFRLS(ccb) \ 103 if (((ccb)->ccb_h.status & CAM_DEV_QFRZN) != 0) \ 104 cam_release_devq((ccb)->ccb_h.path, 0, 0, 0, FALSE) 105 106 /* 107 * Driver states 108 */ 109 110 111 typedef enum { 112 SA_STATE_NORMAL, SA_STATE_ABNORMAL 113 } sa_state; 114 115 #define ccb_pflags ppriv_field0 116 #define ccb_bp ppriv_ptr1 117 118 #define SA_CCB_BUFFER_IO 0x0 119 #define SA_CCB_WAITING 0x1 120 #define SA_CCB_TYPEMASK 0x1 121 #define SA_POSITION_UPDATED 0x2 122 123 #define Set_CCB_Type(x, type) \ 124 x->ccb_h.ccb_pflags &= ~SA_CCB_TYPEMASK; \ 125 x->ccb_h.ccb_pflags |= type 126 127 #define CCB_Type(x) (x->ccb_h.ccb_pflags & SA_CCB_TYPEMASK) 128 129 130 131 typedef enum { 132 SA_FLAG_OPEN = 0x0001, 133 SA_FLAG_FIXED = 0x0002, 134 SA_FLAG_TAPE_LOCKED = 0x0004, 135 SA_FLAG_TAPE_MOUNTED = 0x0008, 136 SA_FLAG_TAPE_WP = 0x0010, 137 SA_FLAG_TAPE_WRITTEN = 0x0020, 138 SA_FLAG_EOM_PENDING = 0x0040, 139 SA_FLAG_EIO_PENDING = 0x0080, 140 SA_FLAG_EOF_PENDING = 0x0100, 141 SA_FLAG_ERR_PENDING = (SA_FLAG_EOM_PENDING|SA_FLAG_EIO_PENDING| 142 SA_FLAG_EOF_PENDING), 143 SA_FLAG_INVALID = 0x0200, 144 SA_FLAG_COMP_ENABLED = 0x0400, 145 SA_FLAG_COMP_SUPP = 0x0800, 146 SA_FLAG_COMP_UNSUPP = 0x1000, 147 SA_FLAG_TAPE_FROZEN = 0x2000 148 } sa_flags; 149 150 typedef enum { 151 SA_MODE_REWIND = 0x00, 152 SA_MODE_NOREWIND = 0x01, 153 SA_MODE_OFFLINE = 0x02 154 } sa_mode; 155 156 typedef enum { 157 SA_PARAM_NONE = 0x00, 158 SA_PARAM_BLOCKSIZE = 0x01, 159 SA_PARAM_DENSITY = 0x02, 160 SA_PARAM_COMPRESSION = 0x04, 161 SA_PARAM_BUFF_MODE = 0x08, 162 SA_PARAM_NUMBLOCKS = 0x10, 163 SA_PARAM_WP = 0x20, 164 SA_PARAM_SPEED = 0x40, 165 SA_PARAM_ALL = 0x7f 166 } sa_params; 167 168 typedef enum { 169 SA_QUIRK_NONE = 0x00, 170 SA_QUIRK_NOCOMP = 0x01, /* Can't deal with compression at all */ 171 SA_QUIRK_FIXED = 0x02, /* Force fixed mode */ 172 SA_QUIRK_VARIABLE = 0x04, /* Force variable mode */ 173 SA_QUIRK_2FM = 0x08, /* Needs Two File Marks at EOD */ 174 SA_QUIRK_1FM = 0x10, /* No more than 1 File Mark at EOD */ 175 SA_QUIRK_NODREAD = 0x20, /* Don't try and dummy read density */ 176 SA_QUIRK_NO_MODESEL = 0x40, /* Don't do mode select at all */ 177 SA_QUIRK_NO_CPAGE = 0x80 /* Don't use DEVICE COMPRESSION page */ 178 } sa_quirks; 179 180 /* units are bits 4-7, 16-21 (1024 units) */ 181 #define SAUNIT(DEV) \ 182 (((minor(DEV) & 0xF0) >> 4) | ((minor(DEV) & 0x3f0000) >> 16)) 183 184 #define SAMODE(z) ((minor(z) & 0x3)) 185 #define SADENSITY(z) (((minor(z) >> 2) & 0x3)) 186 #define SA_IS_CTRL(z) (minor(z) & (1 << 29)) 187 188 #define SA_NOT_CTLDEV 0 189 #define SA_CTLDEV 1 190 191 #define SA_ATYPE_R 0 192 #define SA_ATYPE_NR 1 193 #define SA_ATYPE_ER 2 194 195 #define SAMINOR(ctl, unit, mode, access) \ 196 ((ctl << 29) | ((unit & 0x3f0) << 16) | ((unit & 0xf) << 4) | \ 197 (mode << 0x2) | (access & 0x3)) 198 199 #define SA_UNITMASK SAMINOR(0, -1, 0, 0) 200 #define SA_UNIT(unit) SAMINOR(0, unit, 0, 0) 201 202 #define SA_NUM_MODES 4 203 204 struct sa_softc { 205 sa_state state; 206 sa_flags flags; 207 sa_quirks quirks; 208 struct buf_queue_head buf_queue; 209 int queue_count; 210 struct devstat device_stats; 211 int blk_gran; 212 int blk_mask; 213 int blk_shift; 214 u_int32_t max_blk; 215 u_int32_t min_blk; 216 u_int32_t comp_algorithm; 217 u_int32_t saved_comp_algorithm; 218 u_int32_t media_blksize; 219 u_int32_t last_media_blksize; 220 u_int32_t media_numblks; 221 u_int8_t media_density; 222 u_int8_t speed; 223 u_int8_t scsi_rev; 224 u_int8_t dsreg; /* mtio mt_dsreg, redux */ 225 int buffer_mode; 226 int filemarks; 227 union ccb saved_ccb; 228 int last_resid_was_io; 229 230 /* 231 * Relative to BOT Location. 232 */ 233 daddr_t fileno; 234 daddr_t blkno; 235 236 /* 237 * Latched Error Info 238 */ 239 struct { 240 struct scsi_sense_data _last_io_sense; 241 u_int32_t _last_io_resid; 242 u_int8_t _last_io_cdb[CAM_MAX_CDBLEN]; 243 struct scsi_sense_data _last_ctl_sense; 244 u_int32_t _last_ctl_resid; 245 u_int8_t _last_ctl_cdb[CAM_MAX_CDBLEN]; 246 #define last_io_sense errinfo._last_io_sense 247 #define last_io_resid errinfo._last_io_resid 248 #define last_io_cdb errinfo._last_io_cdb 249 #define last_ctl_sense errinfo._last_ctl_sense 250 #define last_ctl_resid errinfo._last_ctl_resid 251 #define last_ctl_cdb errinfo._last_ctl_cdb 252 } errinfo; 253 /* 254 * Misc other flags/state 255 */ 256 u_int32_t 257 : 31, 258 ctrl_mode : 1; /* control device open */ 259 }; 260 261 struct sa_quirk_entry { 262 struct scsi_inquiry_pattern inq_pat; /* matching pattern */ 263 sa_quirks quirks; /* specific quirk type */ 264 u_int32_t prefblk; /* preferred blocksize when in fixed mode */ 265 }; 266 267 static struct sa_quirk_entry sa_quirk_table[] = 268 { 269 { 270 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "OnStream", 271 "ADR*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_NODREAD | 272 SA_QUIRK_1FM|SA_QUIRK_NO_MODESEL, 32768 273 }, 274 { 275 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 276 "Python 06408*", "*"}, SA_QUIRK_NODREAD, 0 277 }, 278 { 279 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 280 "Python 25601*", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_NODREAD, 0 281 }, 282 { 283 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 284 "Python*", "*"}, SA_QUIRK_NODREAD, 0 285 }, 286 { 287 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 288 "VIPER 150*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 289 }, 290 { 291 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 292 "VIPER 2525 25462", "-011"}, 293 SA_QUIRK_NOCOMP|SA_QUIRK_1FM|SA_QUIRK_NODREAD, 0 294 }, 295 { 296 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 297 "VIPER 2525*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 1024 298 }, 299 #if 0 300 { 301 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 302 "C15*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_NO_CPAGE, 0, 303 }, 304 #endif 305 { 306 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 307 "C56*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 308 }, 309 { 310 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 311 "T20*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 312 }, 313 { 314 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 315 "T4000*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 316 }, 317 { 318 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 319 "HP-88780*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 320 }, 321 { 322 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "KENNEDY", 323 "*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 324 }, 325 { 326 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "M4 DATA", 327 "123107 SCSI*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 328 }, 329 { /* jreynold@primenet.com */ 330 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "Seagate", 331 "STT8000N*", "*"}, SA_QUIRK_1FM, 0 332 }, 333 { /* mike@sentex.net */ 334 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "Seagate", 335 "STT20000*", "*"}, SA_QUIRK_1FM, 0 336 }, 337 { 338 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 339 " TDC 3600", "U07:"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 340 }, 341 { 342 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 343 " TDC 3800", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 344 }, 345 { 346 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 347 " TDC 4100", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 348 }, 349 { 350 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 351 " TDC 4200", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 352 }, 353 { 354 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 355 " SLR*", "*"}, SA_QUIRK_1FM, 0 356 }, 357 { 358 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "WANGTEK", 359 "5525ES*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 360 }, 361 { 362 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "WANGTEK", 363 "51000*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 1024 364 } 365 }; 366 367 static d_open_t saopen; 368 static d_close_t saclose; 369 static d_strategy_t sastrategy; 370 static d_ioctl_t saioctl; 371 static periph_init_t sainit; 372 static periph_ctor_t saregister; 373 static periph_oninv_t saoninvalidate; 374 static periph_dtor_t sacleanup; 375 static periph_start_t sastart; 376 static void saasync(void *callback_arg, u_int32_t code, 377 struct cam_path *path, void *arg); 378 static void sadone(struct cam_periph *periph, 379 union ccb *start_ccb); 380 static int saerror(union ccb *ccb, u_int32_t cam_flags, 381 u_int32_t sense_flags); 382 static int samarkswanted(struct cam_periph *); 383 static int sacheckeod(struct cam_periph *periph); 384 static int sagetparams(struct cam_periph *periph, 385 sa_params params_to_get, 386 u_int32_t *blocksize, u_int8_t *density, 387 u_int32_t *numblocks, int *buff_mode, 388 u_int8_t *write_protect, u_int8_t *speed, 389 int *comp_supported, int *comp_enabled, 390 u_int32_t *comp_algorithm, 391 sa_comp_t *comp_page); 392 static int sasetparams(struct cam_periph *periph, 393 sa_params params_to_set, 394 u_int32_t blocksize, u_int8_t density, 395 u_int32_t comp_algorithm, 396 u_int32_t sense_flags); 397 static void saprevent(struct cam_periph *periph, int action); 398 static int sarewind(struct cam_periph *periph); 399 static int saspace(struct cam_periph *periph, int count, 400 scsi_space_code code); 401 static int samount(struct cam_periph *, int, dev_t); 402 static int saretension(struct cam_periph *periph); 403 static int sareservereleaseunit(struct cam_periph *periph, 404 int reserve); 405 static int saloadunload(struct cam_periph *periph, int load); 406 static int saerase(struct cam_periph *periph, int longerase); 407 static int sawritefilemarks(struct cam_periph *periph, 408 int nmarks, int setmarks); 409 static int sardpos(struct cam_periph *periph, int, u_int32_t *); 410 static int sasetpos(struct cam_periph *periph, int, u_int32_t *); 411 412 413 static struct periph_driver sadriver = 414 { 415 sainit, "sa", 416 TAILQ_HEAD_INITIALIZER(sadriver.units), /* generation */ 0 417 }; 418 419 DATA_SET(periphdriver_set, sadriver); 420 421 /* For 2.2-stable support */ 422 #ifndef D_TAPE 423 #define D_TAPE 0 424 #endif 425 426 #define SA_CDEV_MAJOR 14 427 428 static struct cdevsw sa_cdevsw = { 429 /* name */ "sa", 430 /* maj */ SA_CDEV_MAJOR, 431 /* flags */ D_TAPE, 432 /* port */ NULL, 433 /* clone */ NULL, 434 435 /* open */ saopen, 436 /* close */ saclose, 437 /* read */ physread, 438 /* write */ physwrite, 439 /* ioctl */ saioctl, 440 /* poll */ nopoll, 441 /* mmap */ nommap, 442 /* strategy */ sastrategy, 443 /* dump */ nodump, 444 /* psize */ nopsize 445 }; 446 447 static struct extend_array *saperiphs; 448 449 static int 450 saopen(dev_t dev, int flags, int fmt, struct thread *td) 451 { 452 struct cam_periph *periph; 453 struct sa_softc *softc; 454 int unit; 455 int mode; 456 int density; 457 int error; 458 459 unit = SAUNIT(dev); 460 mode = SAMODE(dev); 461 density = SADENSITY(dev); 462 463 crit_enter(); 464 periph = cam_extend_get(saperiphs, unit); 465 if (periph == NULL) { 466 crit_exit(); 467 return (ENXIO); 468 } 469 softc = (struct sa_softc *)periph->softc; 470 if ((error = cam_periph_lock(periph, PCATCH)) != 0) { 471 crit_exit(); 472 return (error); 473 } 474 crit_exit(); 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; 669 670 if (SA_IS_CTRL(bp->b_dev)) { 671 bp->b_error = EINVAL; 672 goto bad; 673 } 674 unit = SAUNIT(bp->b_dev); 675 periph = cam_extend_get(saperiphs, unit); 676 if (periph == NULL) { 677 bp->b_error = ENXIO; 678 goto bad; 679 } 680 softc = (struct sa_softc *)periph->softc; 681 682 crit_enter(); 683 684 if (softc->flags & SA_FLAG_INVALID) { 685 crit_exit(); 686 bp->b_error = ENXIO; 687 goto bad; 688 } 689 690 if (softc->flags & SA_FLAG_TAPE_FROZEN) { 691 crit_exit(); 692 bp->b_error = EPERM; 693 goto bad; 694 } 695 696 crit_exit(); 697 698 /* 699 * If it's a null transfer, return immediatly 700 */ 701 if (bp->b_bcount == 0) 702 goto done; 703 704 /* valid request? */ 705 if (softc->flags & SA_FLAG_FIXED) { 706 /* 707 * Fixed block device. The byte count must 708 * be a multiple of our block size. 709 */ 710 if (((softc->blk_mask != ~0) && 711 ((bp->b_bcount & softc->blk_mask) != 0)) || 712 ((softc->blk_mask == ~0) && 713 ((bp->b_bcount % softc->min_blk) != 0))) { 714 xpt_print_path(periph->path); 715 printf("Invalid request. Fixed block device " 716 "requests must be a multiple " 717 "of %d bytes\n", softc->media_blksize); 718 bp->b_error = EINVAL; 719 goto bad; 720 } 721 } else if ((bp->b_bcount > softc->max_blk) || 722 (bp->b_bcount < softc->min_blk) || 723 (bp->b_bcount & softc->blk_mask) != 0) { 724 725 xpt_print_path(periph->path); 726 printf("Invalid request. Variable block device " 727 "requests must be "); 728 if (softc->blk_mask != 0) { 729 printf("a multiple of %d ", (0x1 << softc->blk_gran)); 730 } 731 printf("between %d and %d bytes\n", softc->min_blk, 732 softc->max_blk); 733 bp->b_error = EINVAL; 734 goto bad; 735 } 736 737 /* 738 * Mask interrupts so that the device cannot be invalidated until 739 * after we are in the queue. Otherwise, we might not properly 740 * clean up one of the buffers. 741 */ 742 crit_enter(); 743 744 /* 745 * Place it at the end of the queue. 746 */ 747 bufq_insert_tail(&softc->buf_queue, bp); 748 749 softc->queue_count++; 750 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("sastrategy: enqueuing a %d " 751 "%s byte %s queue count now %d\n", (int) bp->b_bcount, 752 (softc->flags & SA_FLAG_FIXED)? "fixed" : "variable", 753 (bp->b_flags & B_READ)? "read" : "write", softc->queue_count)); 754 755 crit_exit(); 756 757 /* 758 * Schedule ourselves for performing the work. 759 */ 760 xpt_schedule(periph, 1); 761 762 return; 763 bad: 764 bp->b_flags |= B_ERROR; 765 done: 766 767 /* 768 * Correctly set the buf to indicate a completed xfer 769 */ 770 bp->b_resid = bp->b_bcount; 771 biodone(bp); 772 } 773 774 static int 775 saioctl(dev_t dev, u_long cmd, caddr_t arg, int flag, struct thread *td) 776 { 777 struct cam_periph *periph; 778 struct sa_softc *softc; 779 scsi_space_code spaceop; 780 int didlockperiph = 0; 781 int unit; 782 int mode; 783 int density; 784 int error = 0; 785 786 unit = SAUNIT(dev); 787 mode = SAMODE(dev); 788 density = SADENSITY(dev); 789 error = 0; /* shut up gcc */ 790 spaceop = 0; /* shut up gcc */ 791 792 periph = cam_extend_get(saperiphs, unit); 793 if (periph == NULL) 794 return (ENXIO); 795 796 softc = (struct sa_softc *)periph->softc; 797 798 /* 799 * Check for control mode accesses. We allow MTIOCGET and 800 * MTIOCERRSTAT (but need to be the only one open in order 801 * to clear latched status), and MTSETBSIZE, MTSETDNSTY 802 * and MTCOMP (but need to be the only one accessing this 803 * device to run those). 804 */ 805 806 if (SA_IS_CTRL(dev)) { 807 switch (cmd) { 808 case MTIOCGETEOTMODEL: 809 case MTIOCGET: 810 break; 811 case MTIOCERRSTAT: 812 /* 813 * If the periph isn't already locked, lock it 814 * so our MTIOCERRSTAT can reset latched error stats. 815 * 816 * If the periph is already locked, skip it because 817 * we're just getting status and it'll be up to the 818 * other thread that has this device open to do 819 * an MTIOCERRSTAT that would clear latched status. 820 */ 821 crit_enter(); 822 if ((periph->flags & CAM_PERIPH_LOCKED) == 0) { 823 error = cam_periph_lock(periph, PCATCH); 824 if (error != 0) { 825 crit_exit(); 826 return (error); 827 } 828 didlockperiph = 1; 829 } 830 crit_exit(); 831 break; 832 833 case MTIOCSETEOTMODEL: 834 case MTSETBSIZ: 835 case MTSETDNSTY: 836 case MTCOMP: 837 /* 838 * We need to acquire the peripheral here rather 839 * than at open time because we are sharing writable 840 * access to data structures. 841 */ 842 crit_enter(); 843 error = cam_periph_lock(periph, PCATCH); 844 if (error != 0) { 845 crit_exit(); 846 return (error); 847 } 848 didlockperiph = 1; 849 crit_exit(); 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 1312 softc = (struct sa_softc *)periph->softc; 1313 1314 /* 1315 * De-register any async callbacks. 1316 */ 1317 xpt_setup_ccb(&csa.ccb_h, periph->path, 1318 /* priority */ 5); 1319 csa.ccb_h.func_code = XPT_SASYNC_CB; 1320 csa.event_enable = 0; 1321 csa.callback = saasync; 1322 csa.callback_arg = periph; 1323 xpt_action((union ccb *)&csa); 1324 1325 softc->flags |= SA_FLAG_INVALID; 1326 1327 /* 1328 * We need to be in a critical section here to keep the buffer 1329 * queue from being modified while we traverse it. 1330 */ 1331 crit_enter(); 1332 1333 /* 1334 * Return all queued I/O with ENXIO. 1335 * XXX Handle any transactions queued to the card 1336 * with XPT_ABORT_CCB. 1337 */ 1338 while ((q_bp = bufq_first(&softc->buf_queue)) != NULL){ 1339 bufq_remove(&softc->buf_queue, q_bp); 1340 q_bp->b_resid = q_bp->b_bcount; 1341 q_bp->b_error = ENXIO; 1342 q_bp->b_flags |= B_ERROR; 1343 biodone(q_bp); 1344 } 1345 softc->queue_count = 0; 1346 crit_exit(); 1347 1348 xpt_print_path(periph->path); 1349 printf("lost device\n"); 1350 1351 } 1352 1353 static void 1354 sacleanup(struct cam_periph *periph) 1355 { 1356 struct sa_softc *softc; 1357 1358 softc = (struct sa_softc *)periph->softc; 1359 1360 devstat_remove_entry(&softc->device_stats); 1361 1362 cam_extend_release(saperiphs, periph->unit_number); 1363 xpt_print_path(periph->path); 1364 printf("removing device entry\n"); 1365 cdevsw_remove(&sa_cdevsw, SA_UNITMASK, SA_UNIT(periph->unit_number)); 1366 free(softc, M_DEVBUF); 1367 } 1368 1369 static void 1370 saasync(void *callback_arg, u_int32_t code, 1371 struct cam_path *path, void *arg) 1372 { 1373 struct cam_periph *periph; 1374 1375 periph = (struct cam_periph *)callback_arg; 1376 switch (code) { 1377 case AC_FOUND_DEVICE: 1378 { 1379 struct ccb_getdev *cgd; 1380 cam_status status; 1381 1382 cgd = (struct ccb_getdev *)arg; 1383 if (cgd == NULL) 1384 break; 1385 1386 if (SID_TYPE(&cgd->inq_data) != T_SEQUENTIAL) 1387 break; 1388 1389 /* 1390 * Allocate a peripheral instance for 1391 * this device and start the probe 1392 * process. 1393 */ 1394 status = cam_periph_alloc(saregister, saoninvalidate, 1395 sacleanup, sastart, 1396 "sa", CAM_PERIPH_BIO, cgd->ccb_h.path, 1397 saasync, AC_FOUND_DEVICE, cgd); 1398 1399 if (status != CAM_REQ_CMP 1400 && status != CAM_REQ_INPROG) 1401 printf("saasync: Unable to probe new device " 1402 "due to status 0x%x\n", status); 1403 break; 1404 } 1405 default: 1406 cam_periph_async(periph, code, path, arg); 1407 break; 1408 } 1409 } 1410 1411 static cam_status 1412 saregister(struct cam_periph *periph, void *arg) 1413 { 1414 struct sa_softc *softc; 1415 struct ccb_setasync csa; 1416 struct ccb_getdev *cgd; 1417 caddr_t match; 1418 int i; 1419 1420 cgd = (struct ccb_getdev *)arg; 1421 if (periph == NULL) { 1422 printf("saregister: periph was NULL!!\n"); 1423 return (CAM_REQ_CMP_ERR); 1424 } 1425 1426 if (cgd == NULL) { 1427 printf("saregister: no getdev CCB, can't register device\n"); 1428 return (CAM_REQ_CMP_ERR); 1429 } 1430 1431 softc = malloc(sizeof (*softc), M_DEVBUF, M_INTWAIT | M_ZERO); 1432 softc->scsi_rev = SID_ANSI_REV(&cgd->inq_data); 1433 softc->state = SA_STATE_NORMAL; 1434 softc->fileno = (daddr_t) -1; 1435 softc->blkno = (daddr_t) -1; 1436 1437 bufq_init(&softc->buf_queue); 1438 periph->softc = softc; 1439 cam_extend_set(saperiphs, periph->unit_number, periph); 1440 1441 /* 1442 * See if this device has any quirks. 1443 */ 1444 match = cam_quirkmatch((caddr_t)&cgd->inq_data, 1445 (caddr_t)sa_quirk_table, 1446 sizeof(sa_quirk_table)/sizeof(*sa_quirk_table), 1447 sizeof(*sa_quirk_table), scsi_inquiry_match); 1448 1449 if (match != NULL) { 1450 softc->quirks = ((struct sa_quirk_entry *)match)->quirks; 1451 softc->last_media_blksize = 1452 ((struct sa_quirk_entry *)match)->prefblk; 1453 #ifdef CAMDEBUG 1454 xpt_print_path(periph->path); 1455 printf("found quirk entry %d\n", (int) 1456 (((struct sa_quirk_entry *) match) - sa_quirk_table)); 1457 #endif 1458 } else 1459 softc->quirks = SA_QUIRK_NONE; 1460 1461 /* 1462 * The SA driver supports a blocksize, but we don't know the 1463 * blocksize until we media is inserted. So, set a flag to 1464 * indicate that the blocksize is unavailable right now. 1465 */ 1466 devstat_add_entry(&softc->device_stats, "sa", periph->unit_number, 0, 1467 DEVSTAT_BS_UNAVAILABLE, SID_TYPE(&cgd->inq_data) | 1468 DEVSTAT_TYPE_IF_SCSI, DEVSTAT_PRIORITY_TAPE); 1469 1470 cdevsw_add(&sa_cdevsw, SA_UNITMASK, SA_UNIT(periph->unit_number)); 1471 make_dev(&sa_cdevsw, SAMINOR(SA_CTLDEV, 1472 periph->unit_number, 0, SA_ATYPE_R), UID_ROOT, GID_OPERATOR, 1473 0660, "r%s%d.ctl", periph->periph_name, periph->unit_number); 1474 1475 make_dev(&sa_cdevsw, SAMINOR(SA_NOT_CTLDEV, 1476 periph->unit_number, 0, SA_ATYPE_R), UID_ROOT, GID_OPERATOR, 1477 0660, "r%s%d", periph->periph_name, periph->unit_number); 1478 1479 make_dev(&sa_cdevsw, SAMINOR(SA_NOT_CTLDEV, 1480 periph->unit_number, 0, SA_ATYPE_NR), UID_ROOT, GID_OPERATOR, 1481 0660, "nr%s%d", periph->periph_name, periph->unit_number); 1482 1483 make_dev(&sa_cdevsw, SAMINOR(SA_NOT_CTLDEV, 1484 periph->unit_number, 0, SA_ATYPE_ER), UID_ROOT, GID_OPERATOR, 1485 0660, "er%s%d", periph->periph_name, periph->unit_number); 1486 1487 for (i = 0; i < SA_NUM_MODES; i++) { 1488 1489 make_dev(&sa_cdevsw, 1490 SAMINOR(SA_NOT_CTLDEV, periph->unit_number, i, SA_ATYPE_R), 1491 UID_ROOT, GID_OPERATOR, 0660, "r%s%d.%d", 1492 periph->periph_name, periph->unit_number, i); 1493 1494 make_dev(&sa_cdevsw, 1495 SAMINOR(SA_NOT_CTLDEV, periph->unit_number, i, SA_ATYPE_NR), 1496 UID_ROOT, GID_OPERATOR, 0660, "nr%s%d.%d", 1497 periph->periph_name, periph->unit_number, i); 1498 1499 1500 make_dev(&sa_cdevsw, 1501 SAMINOR(SA_NOT_CTLDEV, periph->unit_number, i, SA_ATYPE_ER), 1502 UID_ROOT, GID_OPERATOR, 0660, "er%s%d.%d", 1503 periph->periph_name, periph->unit_number, i); 1504 } 1505 1506 /* 1507 * Add an async callback so that we get 1508 * notified if this device goes away. 1509 */ 1510 xpt_setup_ccb(&csa.ccb_h, periph->path, /* priority */ 5); 1511 csa.ccb_h.func_code = XPT_SASYNC_CB; 1512 csa.event_enable = AC_LOST_DEVICE; 1513 csa.callback = saasync; 1514 csa.callback_arg = periph; 1515 xpt_action((union ccb *)&csa); 1516 1517 xpt_announce_periph(periph, NULL); 1518 1519 return (CAM_REQ_CMP); 1520 } 1521 1522 static void 1523 sastart(struct cam_periph *periph, union ccb *start_ccb) 1524 { 1525 struct sa_softc *softc; 1526 1527 softc = (struct sa_softc *)periph->softc; 1528 1529 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("sastart")); 1530 1531 1532 switch (softc->state) { 1533 case SA_STATE_NORMAL: 1534 { 1535 /* Pull a buffer from the queue and get going on it */ 1536 struct buf *bp; 1537 1538 /* 1539 * See if there is a buf with work for us to do.. 1540 */ 1541 crit_enter(); 1542 bp = bufq_first(&softc->buf_queue); 1543 if (periph->immediate_priority <= periph->pinfo.priority) { 1544 CAM_DEBUG_PRINT(CAM_DEBUG_SUBTRACE, 1545 ("queuing for immediate ccb\n")); 1546 Set_CCB_Type(start_ccb, SA_CCB_WAITING); 1547 SLIST_INSERT_HEAD(&periph->ccb_list, &start_ccb->ccb_h, 1548 periph_links.sle); 1549 periph->immediate_priority = CAM_PRIORITY_NONE; 1550 crit_exit(); 1551 wakeup(&periph->ccb_list); 1552 } else if (bp == NULL) { 1553 crit_exit(); 1554 xpt_release_ccb(start_ccb); 1555 } else if ((softc->flags & SA_FLAG_ERR_PENDING) != 0) { 1556 struct buf *done_bp; 1557 again: 1558 softc->queue_count--; 1559 bufq_remove(&softc->buf_queue, bp); 1560 bp->b_resid = bp->b_bcount; 1561 done_bp = bp; 1562 if ((softc->flags & SA_FLAG_EOM_PENDING) != 0) { 1563 /* 1564 * We now just clear errors in this case 1565 * and let the residual be the notifier. 1566 */ 1567 bp->b_error = 0; 1568 } else if ((softc->flags & SA_FLAG_EOF_PENDING) != 0) { 1569 /* 1570 * This can only happen if we're reading 1571 * in fixed length mode. In this case, 1572 * we dump the rest of the list the 1573 * same way. 1574 */ 1575 bp->b_error = 0; 1576 if (bufq_first(&softc->buf_queue) != NULL) { 1577 biodone(done_bp); 1578 goto again; 1579 } 1580 } else if ((softc->flags & SA_FLAG_EIO_PENDING) != 0) { 1581 bp->b_error = EIO; 1582 bp->b_flags |= B_ERROR; 1583 } 1584 bp = bufq_first(&softc->buf_queue); 1585 /* 1586 * Only if we have no other buffers queued up 1587 * do we clear the pending error flag. 1588 */ 1589 if (bp == NULL) 1590 softc->flags &= ~SA_FLAG_ERR_PENDING; 1591 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 1592 ("sastart- ERR_PENDING now 0x%x, bp is %sNULL, " 1593 "%d more buffers queued up\n", 1594 (softc->flags & SA_FLAG_ERR_PENDING), 1595 (bp != NULL)? "not " : " ", softc->queue_count)); 1596 crit_exit(); 1597 xpt_release_ccb(start_ccb); 1598 biodone(done_bp); 1599 } else { 1600 u_int32_t length; 1601 1602 bufq_remove(&softc->buf_queue, bp); 1603 softc->queue_count--; 1604 1605 if ((softc->flags & SA_FLAG_FIXED) != 0) { 1606 if (softc->blk_shift != 0) { 1607 length = 1608 bp->b_bcount >> softc->blk_shift; 1609 } else if (softc->media_blksize != 0) { 1610 length = 1611 bp->b_bcount / softc->media_blksize; 1612 } else { 1613 bp->b_error = EIO; 1614 xpt_print_path(periph->path); 1615 printf("zero blocksize for " 1616 "FIXED length writes?\n"); 1617 crit_exit(); 1618 biodone(bp); 1619 break; 1620 } 1621 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 1622 ("Fixed Record Count is %d\n", length)); 1623 } else { 1624 length = bp->b_bcount; 1625 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_INFO, 1626 ("Variable Record Count is %d\n", length)); 1627 } 1628 devstat_start_transaction(&softc->device_stats); 1629 /* 1630 * Some people have theorized that we should 1631 * suppress illegal length indication if we are 1632 * running in variable block mode so that we don't 1633 * have to request sense every time our requested 1634 * block size is larger than the written block. 1635 * The residual information from the ccb allows 1636 * us to identify this situation anyway. The only 1637 * problem with this is that we will not get 1638 * information about blocks that are larger than 1639 * our read buffer unless we set the block size 1640 * in the mode page to something other than 0. 1641 * 1642 * I believe that this is a non-issue. If user apps 1643 * don't adjust their read size to match our record 1644 * size, that's just life. Anyway, the typical usage 1645 * would be to issue, e.g., 64KB reads and occasionally 1646 * have to do deal with 512 byte or 1KB intermediate 1647 * records. 1648 */ 1649 softc->dsreg = (bp->b_flags & B_READ)? 1650 MTIO_DSREG_RD : MTIO_DSREG_WR; 1651 scsi_sa_read_write(&start_ccb->csio, 0, sadone, 1652 MSG_SIMPLE_Q_TAG, (bp->b_flags & B_READ) != 0, 1653 FALSE, (softc->flags & SA_FLAG_FIXED) != 0, 1654 length, bp->b_data, bp->b_bcount, SSD_FULL_SIZE, 1655 IO_TIMEOUT); 1656 start_ccb->ccb_h.ccb_pflags &= ~SA_POSITION_UPDATED; 1657 Set_CCB_Type(start_ccb, SA_CCB_BUFFER_IO); 1658 start_ccb->ccb_h.ccb_bp = bp; 1659 bp = bufq_first(&softc->buf_queue); 1660 crit_exit(); 1661 xpt_action(start_ccb); 1662 } 1663 1664 if (bp != NULL) { 1665 /* Have more work to do, so ensure we stay scheduled */ 1666 xpt_schedule(periph, 1); 1667 } 1668 break; 1669 } 1670 case SA_STATE_ABNORMAL: 1671 default: 1672 panic("state 0x%x in sastart", softc->state); 1673 break; 1674 } 1675 } 1676 1677 1678 static void 1679 sadone(struct cam_periph *periph, union ccb *done_ccb) 1680 { 1681 struct sa_softc *softc; 1682 struct ccb_scsiio *csio; 1683 1684 softc = (struct sa_softc *)periph->softc; 1685 csio = &done_ccb->csio; 1686 switch (CCB_Type(csio)) { 1687 case SA_CCB_BUFFER_IO: 1688 { 1689 struct buf *bp; 1690 int error; 1691 1692 softc->dsreg = MTIO_DSREG_REST; 1693 bp = (struct buf *)done_ccb->ccb_h.ccb_bp; 1694 error = 0; 1695 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 1696 if ((error = saerror(done_ccb, 0, 0)) == ERESTART) { 1697 /* 1698 * A retry was scheduled, so just return. 1699 */ 1700 return; 1701 } 1702 } 1703 1704 if (error == EIO) { 1705 struct buf *q_bp; 1706 1707 /* 1708 * Catastrophic error. Mark the tape as frozen 1709 * (we no longer know tape position). 1710 * 1711 * Return all queued I/O with EIO, and unfreeze 1712 * our queue so that future transactions that 1713 * attempt to fix this problem can get to the 1714 * device. 1715 * 1716 */ 1717 1718 crit_enter(); 1719 softc->flags |= SA_FLAG_TAPE_FROZEN; 1720 while ((q_bp = bufq_first(&softc->buf_queue)) != NULL) { 1721 bufq_remove(&softc->buf_queue, q_bp); 1722 q_bp->b_resid = q_bp->b_bcount; 1723 q_bp->b_error = EIO; 1724 q_bp->b_flags |= B_ERROR; 1725 biodone(q_bp); 1726 } 1727 crit_exit(); 1728 } 1729 if (error != 0) { 1730 bp->b_resid = bp->b_bcount; 1731 bp->b_error = error; 1732 bp->b_flags |= B_ERROR; 1733 /* 1734 * In the error case, position is updated in saerror. 1735 */ 1736 } else { 1737 bp->b_resid = csio->resid; 1738 bp->b_error = 0; 1739 if (csio->resid != 0) { 1740 bp->b_flags |= B_ERROR; 1741 } 1742 if ((bp->b_flags & B_READ) == 0) { 1743 softc->flags |= SA_FLAG_TAPE_WRITTEN; 1744 softc->filemarks = 0; 1745 } 1746 if (!(csio->ccb_h.ccb_pflags & SA_POSITION_UPDATED) && 1747 (softc->blkno != (daddr_t) -1)) { 1748 if ((softc->flags & SA_FLAG_FIXED) != 0) { 1749 u_int32_t l; 1750 if (softc->blk_shift != 0) { 1751 l = bp->b_bcount >> 1752 softc->blk_shift; 1753 } else { 1754 l = bp->b_bcount / 1755 softc->media_blksize; 1756 } 1757 softc->blkno += (daddr_t) l; 1758 } else { 1759 softc->blkno++; 1760 } 1761 } 1762 } 1763 /* 1764 * If we had an error (immediate or pending), 1765 * release the device queue now. 1766 */ 1767 if (error || (softc->flags & SA_FLAG_ERR_PENDING)) 1768 cam_release_devq(done_ccb->ccb_h.path, 0, 0, 0, 0); 1769 #ifdef CAMDEBUG 1770 if (error || bp->b_resid) { 1771 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 1772 ("error %d resid %ld count %ld\n", error, 1773 bp->b_resid, bp->b_bcount)); 1774 } 1775 #endif 1776 devstat_end_transaction_buf(&softc->device_stats, bp); 1777 biodone(bp); 1778 break; 1779 } 1780 case SA_CCB_WAITING: 1781 { 1782 /* Caller will release the CCB */ 1783 wakeup(&done_ccb->ccb_h.cbfcnp); 1784 return; 1785 } 1786 } 1787 xpt_release_ccb(done_ccb); 1788 } 1789 1790 /* 1791 * Mount the tape (make sure it's ready for I/O). 1792 */ 1793 static int 1794 samount(struct cam_periph *periph, int oflags, dev_t dev) 1795 { 1796 struct sa_softc *softc; 1797 union ccb *ccb; 1798 int error; 1799 1800 /* 1801 * oflags can be checked for 'kind' of open (read-only check) - later 1802 * dev can be checked for a control-mode or compression open - later 1803 */ 1804 UNUSED_PARAMETER(oflags); 1805 UNUSED_PARAMETER(dev); 1806 1807 1808 softc = (struct sa_softc *)periph->softc; 1809 1810 /* 1811 * This should determine if something has happend since the last 1812 * open/mount that would invalidate the mount. We do *not* want 1813 * to retry this command- we just want the status. But we only 1814 * do this if we're mounted already- if we're not mounted, 1815 * we don't care about the unit read state and can instead use 1816 * this opportunity to attempt to reserve the tape unit. 1817 */ 1818 1819 if (softc->flags & SA_FLAG_TAPE_MOUNTED) { 1820 ccb = cam_periph_getccb(periph, 1); 1821 scsi_test_unit_ready(&ccb->csio, 0, sadone, 1822 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT); 1823 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1824 &softc->device_stats); 1825 QFRLS(ccb); 1826 if (error == ENXIO) { 1827 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 1828 scsi_test_unit_ready(&ccb->csio, 0, sadone, 1829 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT); 1830 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1831 &softc->device_stats); 1832 QFRLS(ccb); 1833 } else if (error) { 1834 /* 1835 * We don't need to freeze the tape because we 1836 * will now attempt to rewind/load it. 1837 */ 1838 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 1839 if (CAM_DEBUGGED(ccb->ccb_h.path, CAM_DEBUG_INFO)) { 1840 xpt_print_path(ccb->ccb_h.path); 1841 printf("error %d on TUR in samount\n", error); 1842 } 1843 } 1844 } else { 1845 error = sareservereleaseunit(periph, TRUE); 1846 if (error) { 1847 return (error); 1848 } 1849 ccb = cam_periph_getccb(periph, 1); 1850 scsi_test_unit_ready(&ccb->csio, 0, sadone, 1851 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT); 1852 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1853 &softc->device_stats); 1854 QFRLS(ccb); 1855 } 1856 1857 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) { 1858 struct scsi_read_block_limits_data *rblim = NULL; 1859 int comp_enabled, comp_supported; 1860 u_int8_t write_protect, guessing = 0; 1861 1862 /* 1863 * Clear out old state. 1864 */ 1865 softc->flags &= ~(SA_FLAG_TAPE_WP|SA_FLAG_TAPE_WRITTEN| 1866 SA_FLAG_ERR_PENDING|SA_FLAG_COMP_ENABLED| 1867 SA_FLAG_COMP_SUPP|SA_FLAG_COMP_UNSUPP); 1868 softc->filemarks = 0; 1869 1870 /* 1871 * *Very* first off, make sure we're loaded to BOT. 1872 */ 1873 scsi_load_unload(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 1874 FALSE, FALSE, 1, SSD_FULL_SIZE, REWIND_TIMEOUT); 1875 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1876 &softc->device_stats); 1877 QFRLS(ccb); 1878 1879 /* 1880 * In case this doesn't work, do a REWIND instead 1881 */ 1882 if (error) { 1883 scsi_rewind(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, 1884 FALSE, SSD_FULL_SIZE, REWIND_TIMEOUT); 1885 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1886 &softc->device_stats); 1887 QFRLS(ccb); 1888 } 1889 if (error) { 1890 xpt_release_ccb(ccb); 1891 goto exit; 1892 } 1893 1894 /* 1895 * Do a dummy test read to force access to the 1896 * media so that the drive will really know what's 1897 * there. We actually don't really care what the 1898 * blocksize on tape is and don't expect to really 1899 * read a full record. 1900 */ 1901 rblim = malloc(8192, M_TEMP, M_INTWAIT); 1902 1903 if ((softc->quirks & SA_QUIRK_NODREAD) == 0) { 1904 scsi_sa_read_write(&ccb->csio, 0, sadone, 1905 MSG_SIMPLE_Q_TAG, 1, FALSE, 0, 8192, 1906 (void *) rblim, 8192, SSD_FULL_SIZE, 1907 IO_TIMEOUT); 1908 (void) cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1909 &softc->device_stats); 1910 QFRLS(ccb); 1911 scsi_rewind(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, 1912 FALSE, SSD_FULL_SIZE, REWIND_TIMEOUT); 1913 error = cam_periph_runccb(ccb, saerror, 0, 1914 SF_NO_PRINT | SF_RETRY_SELTO | SF_RETRY_UA, 1915 &softc->device_stats); 1916 QFRLS(ccb); 1917 if (error) { 1918 xpt_print_path(ccb->ccb_h.path); 1919 printf("unable to rewind after test read\n"); 1920 xpt_release_ccb(ccb); 1921 goto exit; 1922 } 1923 } 1924 1925 /* 1926 * Next off, determine block limits. 1927 */ 1928 scsi_read_block_limits(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, 1929 rblim, SSD_FULL_SIZE, SCSIOP_TIMEOUT); 1930 1931 error = cam_periph_runccb(ccb, saerror, 0, 1932 SF_NO_PRINT | SF_RETRY_UA | SF_RETRY_SELTO, 1933 &softc->device_stats); 1934 QFRLS(ccb); 1935 xpt_release_ccb(ccb); 1936 1937 if (error != 0) { 1938 /* 1939 * If it's less than SCSI-2, READ BLOCK LIMITS is not 1940 * a MANDATORY command. Anyway- it doesn't matter- 1941 * we can proceed anyway. 1942 */ 1943 softc->blk_gran = 0; 1944 softc->max_blk = ~0; 1945 softc->min_blk = 0; 1946 } else { 1947 if (softc->scsi_rev >= SCSI_REV_3) { 1948 softc->blk_gran = RBL_GRAN(rblim); 1949 } else { 1950 softc->blk_gran = 0; 1951 } 1952 /* 1953 * We take max_blk == min_blk to mean a default to 1954 * fixed mode- but note that whatever we get out of 1955 * sagetparams below will actually determine whether 1956 * we are actually *in* fixed mode. 1957 */ 1958 softc->max_blk = scsi_3btoul(rblim->maximum); 1959 softc->min_blk = scsi_2btoul(rblim->minimum); 1960 1961 1962 } 1963 /* 1964 * Next, perform a mode sense to determine 1965 * current density, blocksize, compression etc. 1966 */ 1967 error = sagetparams(periph, SA_PARAM_ALL, 1968 &softc->media_blksize, 1969 &softc->media_density, 1970 &softc->media_numblks, 1971 &softc->buffer_mode, &write_protect, 1972 &softc->speed, &comp_supported, 1973 &comp_enabled, &softc->comp_algorithm, 1974 NULL); 1975 1976 if (error != 0) { 1977 /* 1978 * We could work a little harder here. We could 1979 * adjust our attempts to get information. It 1980 * might be an ancient tape drive. If someone 1981 * nudges us, we'll do that. 1982 */ 1983 goto exit; 1984 } 1985 1986 /* 1987 * If no quirk has determined that this is a device that is 1988 * preferred to be in fixed or variable mode, now is the time 1989 * to find out. 1990 */ 1991 if ((softc->quirks & (SA_QUIRK_FIXED|SA_QUIRK_VARIABLE)) == 0) { 1992 guessing = 1; 1993 /* 1994 * This could be expensive to find out. Luckily we 1995 * only need to do this once. If we start out in 1996 * 'default' mode, try and set ourselves to one 1997 * of the densities that would determine a wad 1998 * of other stuff. Go from highest to lowest. 1999 */ 2000 if (softc->media_density == SCSI_DEFAULT_DENSITY) { 2001 int i; 2002 static u_int8_t ctry[] = { 2003 SCSI_DENSITY_HALFINCH_PE, 2004 SCSI_DENSITY_HALFINCH_6250C, 2005 SCSI_DENSITY_HALFINCH_6250, 2006 SCSI_DENSITY_HALFINCH_1600, 2007 SCSI_DENSITY_HALFINCH_800, 2008 SCSI_DENSITY_QIC_4GB, 2009 SCSI_DENSITY_QIC_2GB, 2010 SCSI_DENSITY_QIC_525_320, 2011 SCSI_DENSITY_QIC_150, 2012 SCSI_DENSITY_QIC_120, 2013 SCSI_DENSITY_QIC_24, 2014 SCSI_DENSITY_QIC_11_9TRK, 2015 SCSI_DENSITY_QIC_11_4TRK, 2016 SCSI_DENSITY_QIC_1320, 2017 SCSI_DENSITY_QIC_3080, 2018 0 2019 }; 2020 for (i = 0; ctry[i]; i++) { 2021 error = sasetparams(periph, 2022 SA_PARAM_DENSITY, 0, ctry[i], 2023 0, SF_NO_PRINT); 2024 if (error == 0) { 2025 softc->media_density = ctry[i]; 2026 break; 2027 } 2028 } 2029 } 2030 switch (softc->media_density) { 2031 case SCSI_DENSITY_QIC_11_4TRK: 2032 case SCSI_DENSITY_QIC_11_9TRK: 2033 case SCSI_DENSITY_QIC_24: 2034 case SCSI_DENSITY_QIC_120: 2035 case SCSI_DENSITY_QIC_150: 2036 case SCSI_DENSITY_QIC_525_320: 2037 case SCSI_DENSITY_QIC_1320: 2038 case SCSI_DENSITY_QIC_3080: 2039 softc->quirks &= ~SA_QUIRK_2FM; 2040 softc->quirks |= SA_QUIRK_FIXED|SA_QUIRK_1FM; 2041 softc->last_media_blksize = 512; 2042 break; 2043 case SCSI_DENSITY_QIC_4GB: 2044 case SCSI_DENSITY_QIC_2GB: 2045 softc->quirks &= ~SA_QUIRK_2FM; 2046 softc->quirks |= SA_QUIRK_FIXED|SA_QUIRK_1FM; 2047 softc->last_media_blksize = 1024; 2048 break; 2049 default: 2050 softc->last_media_blksize = 2051 softc->media_blksize; 2052 softc->quirks |= SA_QUIRK_VARIABLE; 2053 break; 2054 } 2055 } 2056 2057 /* 2058 * If no quirk has determined that this is a device that needs 2059 * to have 2 Filemarks at EOD, now is the time to find out. 2060 */ 2061 2062 if ((softc->quirks & SA_QUIRK_2FM) == 0) { 2063 switch (softc->media_density) { 2064 case SCSI_DENSITY_HALFINCH_800: 2065 case SCSI_DENSITY_HALFINCH_1600: 2066 case SCSI_DENSITY_HALFINCH_6250: 2067 case SCSI_DENSITY_HALFINCH_6250C: 2068 case SCSI_DENSITY_HALFINCH_PE: 2069 softc->quirks &= ~SA_QUIRK_1FM; 2070 softc->quirks |= SA_QUIRK_2FM; 2071 break; 2072 default: 2073 break; 2074 } 2075 } 2076 2077 /* 2078 * Now validate that some info we got makes sense. 2079 */ 2080 if ((softc->max_blk < softc->media_blksize) || 2081 (softc->min_blk > softc->media_blksize && 2082 softc->media_blksize)) { 2083 xpt_print_path(ccb->ccb_h.path); 2084 printf("BLOCK LIMITS (%d..%d) could not match current " 2085 "block settings (%d)- adjusting\n", softc->min_blk, 2086 softc->max_blk, softc->media_blksize); 2087 softc->max_blk = softc->min_blk = 2088 softc->media_blksize; 2089 } 2090 2091 /* 2092 * Now put ourselves into the right frame of mind based 2093 * upon quirks... 2094 */ 2095 tryagain: 2096 /* 2097 * If we want to be in FIXED mode and our current blocksize 2098 * is not equal to our last blocksize (if nonzero), try and 2099 * set ourselves to this last blocksize (as the 'preferred' 2100 * block size). The initial quirkmatch at registry sets the 2101 * initial 'last' blocksize. If, for whatever reason, this 2102 * 'last' blocksize is zero, set the blocksize to 512, 2103 * or min_blk if that's larger. 2104 */ 2105 if ((softc->quirks & SA_QUIRK_FIXED) && 2106 (softc->quirks & SA_QUIRK_NO_MODESEL) == 0 && 2107 (softc->media_blksize != softc->last_media_blksize)) { 2108 softc->media_blksize = softc->last_media_blksize; 2109 if (softc->media_blksize == 0) { 2110 softc->media_blksize = 512; 2111 if (softc->media_blksize < softc->min_blk) { 2112 softc->media_blksize = softc->min_blk; 2113 } 2114 } 2115 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, 2116 softc->media_blksize, 0, 0, SF_NO_PRINT); 2117 if (error) { 2118 xpt_print_path(ccb->ccb_h.path); 2119 printf("unable to set fixed blocksize to %d\n", 2120 softc->media_blksize); 2121 goto exit; 2122 } 2123 } 2124 2125 if ((softc->quirks & SA_QUIRK_VARIABLE) && 2126 (softc->media_blksize != 0)) { 2127 softc->last_media_blksize = softc->media_blksize; 2128 softc->media_blksize = 0; 2129 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, 2130 0, 0, 0, SF_NO_PRINT); 2131 if (error) { 2132 /* 2133 * If this fails and we were guessing, just 2134 * assume that we got it wrong and go try 2135 * fixed block mode. Don't even check against 2136 * density code at this point. 2137 */ 2138 if (guessing) { 2139 softc->quirks &= ~SA_QUIRK_VARIABLE; 2140 softc->quirks |= SA_QUIRK_FIXED; 2141 if (softc->last_media_blksize == 0) 2142 softc->last_media_blksize = 512; 2143 goto tryagain; 2144 } 2145 xpt_print_path(ccb->ccb_h.path); 2146 printf("unable to set variable blocksize\n"); 2147 goto exit; 2148 } 2149 } 2150 2151 /* 2152 * Now that we have the current block size, 2153 * set up some parameters for sastart's usage. 2154 */ 2155 if (softc->media_blksize) { 2156 softc->flags |= SA_FLAG_FIXED; 2157 if (powerof2(softc->media_blksize)) { 2158 softc->blk_shift = 2159 ffs(softc->media_blksize) - 1; 2160 softc->blk_mask = softc->media_blksize - 1; 2161 } else { 2162 softc->blk_mask = ~0; 2163 softc->blk_shift = 0; 2164 } 2165 } else { 2166 /* 2167 * The SCSI-3 spec allows 0 to mean "unspecified". 2168 * The SCSI-1 spec allows 0 to mean 'infinite'. 2169 * 2170 * Either works here. 2171 */ 2172 if (softc->max_blk == 0) { 2173 softc->max_blk = ~0; 2174 } 2175 softc->blk_shift = 0; 2176 if (softc->blk_gran != 0) { 2177 softc->blk_mask = softc->blk_gran - 1; 2178 } else { 2179 softc->blk_mask = 0; 2180 } 2181 } 2182 2183 if (write_protect) 2184 softc->flags |= SA_FLAG_TAPE_WP; 2185 2186 if (comp_supported) { 2187 if (softc->saved_comp_algorithm == 0) 2188 softc->saved_comp_algorithm = 2189 softc->comp_algorithm; 2190 softc->flags |= SA_FLAG_COMP_SUPP; 2191 if (comp_enabled) 2192 softc->flags |= SA_FLAG_COMP_ENABLED; 2193 } else 2194 softc->flags |= SA_FLAG_COMP_UNSUPP; 2195 2196 if ((softc->buffer_mode == SMH_SA_BUF_MODE_NOBUF) && 2197 (softc->quirks & SA_QUIRK_NO_MODESEL) == 0) { 2198 error = sasetparams(periph, SA_PARAM_BUFF_MODE, 0, 2199 0, 0, SF_NO_PRINT); 2200 if (error == 0) { 2201 softc->buffer_mode = SMH_SA_BUF_MODE_SIBUF; 2202 } else { 2203 xpt_print_path(ccb->ccb_h.path); 2204 printf("unable to set buffered mode\n"); 2205 } 2206 error = 0; /* not an error */ 2207 } 2208 2209 2210 if (error == 0) { 2211 softc->flags |= SA_FLAG_TAPE_MOUNTED; 2212 } 2213 exit: 2214 if (rblim != NULL) 2215 free(rblim, M_TEMP); 2216 2217 if (error != 0) { 2218 softc->dsreg = MTIO_DSREG_NIL; 2219 } else { 2220 softc->fileno = softc->blkno = 0; 2221 softc->dsreg = MTIO_DSREG_REST; 2222 } 2223 #ifdef SA_1FM_AT_EOD 2224 if ((softc->quirks & SA_QUIRK_2FM) == 0) 2225 softc->quirks |= SA_QUIRK_1FM; 2226 #else 2227 if ((softc->quirks & SA_QUIRK_1FM) == 0) 2228 softc->quirks |= SA_QUIRK_2FM; 2229 #endif 2230 } else 2231 xpt_release_ccb(ccb); 2232 2233 /* 2234 * If we return an error, we're not mounted any more, 2235 * so release any device reservation. 2236 */ 2237 if (error != 0) { 2238 (void) sareservereleaseunit(periph, FALSE); 2239 } else { 2240 /* 2241 * Clear I/O residual. 2242 */ 2243 softc->last_io_resid = 0; 2244 softc->last_ctl_resid = 0; 2245 } 2246 return (error); 2247 } 2248 2249 /* 2250 * How many filemarks do we need to write if we were to terminate the 2251 * tape session right now? Note that this can be a negative number 2252 */ 2253 2254 static int 2255 samarkswanted(struct cam_periph *periph) 2256 { 2257 int markswanted; 2258 struct sa_softc *softc; 2259 2260 softc = (struct sa_softc *)periph->softc; 2261 markswanted = 0; 2262 if ((softc->flags & SA_FLAG_TAPE_WRITTEN) != 0) { 2263 markswanted++; 2264 if (softc->quirks & SA_QUIRK_2FM) 2265 markswanted++; 2266 } 2267 markswanted -= softc->filemarks; 2268 return (markswanted); 2269 } 2270 2271 static int 2272 sacheckeod(struct cam_periph *periph) 2273 { 2274 int error; 2275 int markswanted; 2276 struct sa_softc *softc; 2277 2278 softc = (struct sa_softc *)periph->softc; 2279 markswanted = samarkswanted(periph); 2280 2281 if (markswanted > 0) { 2282 error = sawritefilemarks(periph, markswanted, FALSE); 2283 } else { 2284 error = 0; 2285 } 2286 return (error); 2287 } 2288 2289 static int 2290 saerror(union ccb *ccb, u_int32_t cflgs, u_int32_t sflgs) 2291 { 2292 static const char *toobig = 2293 "%d-byte tape record bigger than supplied buffer\n"; 2294 struct cam_periph *periph; 2295 struct sa_softc *softc; 2296 struct ccb_scsiio *csio; 2297 struct scsi_sense_data *sense; 2298 u_int32_t resid = 0; 2299 int32_t info = 0; 2300 cam_status status; 2301 int error_code, sense_key, asc, ascq, error, aqvalid; 2302 2303 periph = xpt_path_periph(ccb->ccb_h.path); 2304 softc = (struct sa_softc *)periph->softc; 2305 csio = &ccb->csio; 2306 sense = &csio->sense_data; 2307 scsi_extract_sense(sense, &error_code, &sense_key, &asc, &ascq); 2308 aqvalid = sense->extra_len >= 6; 2309 error = 0; 2310 2311 status = csio->ccb_h.status & CAM_STATUS_MASK; 2312 2313 /* 2314 * Calculate/latch up, any residuals... We do this in a funny 2-step 2315 * so we can print stuff here if we have CAM_DEBUG enabled for this 2316 * unit. 2317 */ 2318 if (status == CAM_SCSI_STATUS_ERROR) { 2319 if ((sense->error_code & SSD_ERRCODE_VALID) != 0) { 2320 info = (int32_t) scsi_4btoul(sense->info); 2321 resid = info; 2322 if ((softc->flags & SA_FLAG_FIXED) != 0) 2323 resid *= softc->media_blksize; 2324 } else { 2325 resid = csio->dxfer_len; 2326 info = resid; 2327 if ((softc->flags & SA_FLAG_FIXED) != 0) { 2328 if (softc->media_blksize) 2329 info /= softc->media_blksize; 2330 } 2331 } 2332 if (CCB_Type(csio) == SA_CCB_BUFFER_IO) { 2333 bcopy((caddr_t) sense, (caddr_t) &softc->last_io_sense, 2334 sizeof (struct scsi_sense_data)); 2335 bcopy(csio->cdb_io.cdb_bytes, softc->last_io_cdb, 2336 (int) csio->cdb_len); 2337 softc->last_io_resid = resid; 2338 softc->last_resid_was_io = 1; 2339 } else { 2340 bcopy((caddr_t) sense, (caddr_t) &softc->last_ctl_sense, 2341 sizeof (struct scsi_sense_data)); 2342 bcopy(csio->cdb_io.cdb_bytes, softc->last_ctl_cdb, 2343 (int) csio->cdb_len); 2344 softc->last_ctl_resid = resid; 2345 softc->last_resid_was_io = 0; 2346 } 2347 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("CDB[0]=0x%x Key 0x%x " 2348 "ASC/ASCQ 0x%x/0x%x CAM STATUS 0x%x flags 0x%x resid %d " 2349 "dxfer_len %d\n", csio->cdb_io.cdb_bytes[0] & 0xff, 2350 sense_key, asc, ascq, status, 2351 sense->flags & ~SSD_KEY_RESERVED, resid, csio->dxfer_len)); 2352 } else { 2353 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 2354 ("Cam Status 0x%x\n", status)); 2355 } 2356 2357 switch (status) { 2358 case CAM_REQ_CMP: 2359 return (0); 2360 case CAM_SCSI_STATUS_ERROR: 2361 /* 2362 * If a read/write command, we handle it here. 2363 */ 2364 if (CCB_Type(csio) != SA_CCB_WAITING) { 2365 break; 2366 } 2367 /* 2368 * If this was just EOM/EOP, Filemark, Setmark or ILI detected 2369 * on a non read/write command, we assume it's not an error 2370 * and propagate the residule and return. 2371 */ 2372 if ((aqvalid && asc == 0 && ascq > 0 && ascq <= 5) || 2373 (aqvalid == 0 && sense_key == SSD_KEY_NO_SENSE)) { 2374 csio->resid = resid; 2375 QFRLS(ccb); 2376 return (0); 2377 } 2378 /* 2379 * Otherwise, we let the common code handle this. 2380 */ 2381 return (cam_periph_error(ccb, cflgs, sflgs, &softc->saved_ccb)); 2382 2383 /* 2384 * XXX: To Be Fixed 2385 * We cannot depend upon CAM honoring retry counts for these. 2386 */ 2387 case CAM_SCSI_BUS_RESET: 2388 case CAM_BDR_SENT: 2389 if (ccb->ccb_h.retry_count <= 0) { 2390 return (EIO); 2391 break; 2392 } 2393 /* FALLTHROUGH */ 2394 default: 2395 return (cam_periph_error(ccb, cflgs, sflgs, &softc->saved_ccb)); 2396 } 2397 2398 /* 2399 * Handle filemark, end of tape, mismatched record sizes.... 2400 * From this point out, we're only handling read/write cases. 2401 * Handle writes && reads differently. 2402 */ 2403 2404 if (csio->cdb_io.cdb_bytes[0] == SA_WRITE) { 2405 if (sense_key == SSD_KEY_VOLUME_OVERFLOW) { 2406 csio->resid = resid; 2407 error = ENOSPC; 2408 } else if (sense->flags & SSD_EOM) { 2409 softc->flags |= SA_FLAG_EOM_PENDING; 2410 /* 2411 * Grotesque as it seems, the few times 2412 * I've actually seen a non-zero resid, 2413 * the tape drive actually lied and had 2414 * writtent all the data!. 2415 */ 2416 csio->resid = 0; 2417 } 2418 } else { 2419 csio->resid = resid; 2420 if (sense_key == SSD_KEY_BLANK_CHECK) { 2421 if (softc->quirks & SA_QUIRK_1FM) { 2422 error = 0; 2423 softc->flags |= SA_FLAG_EOM_PENDING; 2424 } else { 2425 error = EIO; 2426 } 2427 } else if (sense->flags & SSD_FILEMARK) { 2428 if (softc->flags & SA_FLAG_FIXED) { 2429 error = -1; 2430 softc->flags |= SA_FLAG_EOF_PENDING; 2431 } 2432 /* 2433 * Unconditionally, if we detected a filemark on a read, 2434 * mark that we've run moved a file ahead. 2435 */ 2436 if (softc->fileno != (daddr_t) -1) { 2437 softc->fileno++; 2438 softc->blkno = 0; 2439 csio->ccb_h.ccb_pflags |= SA_POSITION_UPDATED; 2440 } 2441 } 2442 } 2443 2444 /* 2445 * Incorrect Length usually applies to read, but can apply to writes. 2446 */ 2447 if (error == 0 && (sense->flags & SSD_ILI)) { 2448 if (info < 0) { 2449 xpt_print_path(csio->ccb_h.path); 2450 printf(toobig, csio->dxfer_len - info); 2451 csio->resid = csio->dxfer_len; 2452 error = EIO; 2453 } else { 2454 csio->resid = resid; 2455 if (softc->flags & SA_FLAG_FIXED) { 2456 softc->flags |= SA_FLAG_EIO_PENDING; 2457 } 2458 /* 2459 * Bump the block number if we hadn't seen a filemark. 2460 * Do this independent of errors (we've moved anyway). 2461 */ 2462 if ((sense->flags & SSD_FILEMARK) == 0) { 2463 if (softc->blkno != (daddr_t) -1) { 2464 softc->blkno++; 2465 csio->ccb_h.ccb_pflags |= 2466 SA_POSITION_UPDATED; 2467 } 2468 } 2469 } 2470 } 2471 2472 if (error <= 0) { 2473 /* 2474 * Unfreeze the queue if frozen as we're not returning anything 2475 * to our waiters that would indicate an I/O error has occurred 2476 * (yet). 2477 */ 2478 QFRLS(ccb); 2479 error = 0; 2480 } 2481 return (error); 2482 } 2483 2484 static int 2485 sagetparams(struct cam_periph *periph, sa_params params_to_get, 2486 u_int32_t *blocksize, u_int8_t *density, u_int32_t *numblocks, 2487 int *buff_mode, u_int8_t *write_protect, u_int8_t *speed, 2488 int *comp_supported, int *comp_enabled, u_int32_t *comp_algorithm, 2489 sa_comp_t *tcs) 2490 { 2491 union ccb *ccb; 2492 void *mode_buffer; 2493 struct scsi_mode_header_6 *mode_hdr; 2494 struct scsi_mode_blk_desc *mode_blk; 2495 int mode_buffer_len; 2496 struct sa_softc *softc; 2497 u_int8_t cpage; 2498 int error; 2499 cam_status status; 2500 2501 softc = (struct sa_softc *)periph->softc; 2502 ccb = cam_periph_getccb(periph, 1); 2503 if (softc->quirks & SA_QUIRK_NO_CPAGE) 2504 cpage = SA_DEVICE_CONFIGURATION_PAGE; 2505 else 2506 cpage = SA_DATA_COMPRESSION_PAGE; 2507 2508 retry: 2509 mode_buffer_len = sizeof(*mode_hdr) + sizeof(*mode_blk); 2510 2511 if (params_to_get & SA_PARAM_COMPRESSION) { 2512 if (softc->quirks & SA_QUIRK_NOCOMP) { 2513 *comp_supported = FALSE; 2514 params_to_get &= ~SA_PARAM_COMPRESSION; 2515 } else 2516 mode_buffer_len += sizeof (sa_comp_t); 2517 } 2518 2519 mode_buffer = malloc(mode_buffer_len, M_TEMP, M_INTWAIT | M_ZERO); 2520 mode_hdr = (struct scsi_mode_header_6 *)mode_buffer; 2521 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 2522 2523 /* it is safe to retry this */ 2524 scsi_mode_sense(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 2525 SMS_PAGE_CTRL_CURRENT, (params_to_get & SA_PARAM_COMPRESSION) ? 2526 cpage : SMS_VENDOR_SPECIFIC_PAGE, mode_buffer, mode_buffer_len, 2527 SSD_FULL_SIZE, SCSIOP_TIMEOUT); 2528 2529 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2530 &softc->device_stats); 2531 QFRLS(ccb); 2532 2533 status = ccb->ccb_h.status & CAM_STATUS_MASK; 2534 2535 if (error == EINVAL && (params_to_get & SA_PARAM_COMPRESSION) != 0) { 2536 /* 2537 * Hmm. Let's see if we can try another page... 2538 * If we've already done that, give up on compression 2539 * for this device and remember this for the future 2540 * and attempt the request without asking for compression 2541 * info. 2542 */ 2543 if (cpage == SA_DATA_COMPRESSION_PAGE) { 2544 cpage = SA_DEVICE_CONFIGURATION_PAGE; 2545 goto retry; 2546 } 2547 softc->quirks |= SA_QUIRK_NOCOMP; 2548 free(mode_buffer, M_TEMP); 2549 goto retry; 2550 } else if (status == CAM_SCSI_STATUS_ERROR) { 2551 /* Tell the user about the fatal error. */ 2552 scsi_sense_print(&ccb->csio); 2553 goto sagetparamsexit; 2554 } 2555 2556 /* 2557 * If the user only wants the compression information, and 2558 * the device doesn't send back the block descriptor, it's 2559 * no big deal. If the user wants more than just 2560 * compression, though, and the device doesn't pass back the 2561 * block descriptor, we need to send another mode sense to 2562 * get the block descriptor. 2563 */ 2564 if ((mode_hdr->blk_desc_len == 0) && 2565 (params_to_get & SA_PARAM_COMPRESSION) && 2566 (params_to_get & ~(SA_PARAM_COMPRESSION))) { 2567 2568 /* 2569 * Decrease the mode buffer length by the size of 2570 * the compression page, to make sure the data 2571 * there doesn't get overwritten. 2572 */ 2573 mode_buffer_len -= sizeof (sa_comp_t); 2574 2575 /* 2576 * Now move the compression page that we presumably 2577 * got back down the memory chunk a little bit so 2578 * it doesn't get spammed. 2579 */ 2580 bcopy(&mode_hdr[0], &mode_hdr[1], sizeof (sa_comp_t)); 2581 bzero(&mode_hdr[0], sizeof (mode_hdr[0])); 2582 2583 /* 2584 * Now, we issue another mode sense and just ask 2585 * for the block descriptor, etc. 2586 */ 2587 2588 scsi_mode_sense(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 2589 SMS_PAGE_CTRL_CURRENT, SMS_VENDOR_SPECIFIC_PAGE, 2590 mode_buffer, mode_buffer_len, SSD_FULL_SIZE, 2591 SCSIOP_TIMEOUT); 2592 2593 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2594 &softc->device_stats); 2595 QFRLS(ccb); 2596 2597 if (error != 0) 2598 goto sagetparamsexit; 2599 } 2600 2601 if (params_to_get & SA_PARAM_BLOCKSIZE) 2602 *blocksize = scsi_3btoul(mode_blk->blklen); 2603 2604 if (params_to_get & SA_PARAM_NUMBLOCKS) 2605 *numblocks = scsi_3btoul(mode_blk->nblocks); 2606 2607 if (params_to_get & SA_PARAM_BUFF_MODE) 2608 *buff_mode = mode_hdr->dev_spec & SMH_SA_BUF_MODE_MASK; 2609 2610 if (params_to_get & SA_PARAM_DENSITY) 2611 *density = mode_blk->density; 2612 2613 if (params_to_get & SA_PARAM_WP) 2614 *write_protect = (mode_hdr->dev_spec & SMH_SA_WP)? TRUE : FALSE; 2615 2616 if (params_to_get & SA_PARAM_SPEED) 2617 *speed = mode_hdr->dev_spec & SMH_SA_SPEED_MASK; 2618 2619 if (params_to_get & SA_PARAM_COMPRESSION) { 2620 sa_comp_t *ntcs = (sa_comp_t *) &mode_blk[1]; 2621 if (cpage == SA_DATA_COMPRESSION_PAGE) { 2622 struct scsi_data_compression_page *cp = &ntcs->dcomp; 2623 *comp_supported = 2624 (cp->dce_and_dcc & SA_DCP_DCC)? TRUE : FALSE; 2625 *comp_enabled = 2626 (cp->dce_and_dcc & SA_DCP_DCE)? TRUE : FALSE; 2627 *comp_algorithm = scsi_4btoul(cp->comp_algorithm); 2628 } else { 2629 struct scsi_dev_conf_page *cp = &ntcs->dconf; 2630 /* 2631 * We don't really know whether this device supports 2632 * Data Compression if the the algorithm field is 2633 * zero. Just say we do. 2634 */ 2635 *comp_supported = TRUE; 2636 *comp_enabled = 2637 (cp->sel_comp_alg != SA_COMP_NONE)? TRUE : FALSE; 2638 *comp_algorithm = cp->sel_comp_alg; 2639 } 2640 if (tcs != NULL) 2641 bcopy(ntcs, tcs, sizeof (sa_comp_t)); 2642 } 2643 2644 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 2645 int idx; 2646 char *xyz = mode_buffer; 2647 xpt_print_path(periph->path); 2648 printf("Mode Sense Data="); 2649 for (idx = 0; idx < mode_buffer_len; idx++) 2650 printf(" 0x%02x", xyz[idx] & 0xff); 2651 printf("\n"); 2652 } 2653 2654 sagetparamsexit: 2655 2656 xpt_release_ccb(ccb); 2657 free(mode_buffer, M_TEMP); 2658 return (error); 2659 } 2660 2661 /* 2662 * The purpose of this function is to set one of four different parameters 2663 * for a tape drive: 2664 * - blocksize 2665 * - density 2666 * - compression / compression algorithm 2667 * - buffering mode 2668 * 2669 * The assumption is that this will be called from saioctl(), and therefore 2670 * from a process context. Thus the waiting malloc calls below. If that 2671 * assumption ever changes, the malloc calls should be changed to be 2672 * NOWAIT mallocs. 2673 * 2674 * Any or all of the four parameters may be set when this function is 2675 * called. It should handle setting more than one parameter at once. 2676 */ 2677 static int 2678 sasetparams(struct cam_periph *periph, sa_params params_to_set, 2679 u_int32_t blocksize, u_int8_t density, u_int32_t calg, 2680 u_int32_t sense_flags) 2681 { 2682 struct sa_softc *softc; 2683 u_int32_t current_blocksize; 2684 u_int32_t current_calg; 2685 u_int8_t current_density; 2686 u_int8_t current_speed; 2687 int comp_enabled, comp_supported; 2688 void *mode_buffer; 2689 int mode_buffer_len; 2690 struct scsi_mode_header_6 *mode_hdr; 2691 struct scsi_mode_blk_desc *mode_blk; 2692 sa_comp_t *ccomp, *cpage; 2693 int buff_mode; 2694 union ccb *ccb = NULL; 2695 int error; 2696 2697 softc = (struct sa_softc *)periph->softc; 2698 2699 ccomp = malloc(sizeof (sa_comp_t), M_TEMP, M_INTWAIT); 2700 2701 /* 2702 * Since it doesn't make sense to set the number of blocks, or 2703 * write protection, we won't try to get the current value. We 2704 * always want to get the blocksize, so we can set it back to the 2705 * proper value. 2706 */ 2707 error = sagetparams(periph, 2708 params_to_set | SA_PARAM_BLOCKSIZE | SA_PARAM_SPEED, 2709 ¤t_blocksize, ¤t_density, NULL, &buff_mode, NULL, 2710 ¤t_speed, &comp_supported, &comp_enabled, 2711 ¤t_calg, ccomp); 2712 2713 if (error != 0) { 2714 free(ccomp, M_TEMP); 2715 return (error); 2716 } 2717 2718 mode_buffer_len = sizeof(*mode_hdr) + sizeof(*mode_blk); 2719 if (params_to_set & SA_PARAM_COMPRESSION) 2720 mode_buffer_len += sizeof (sa_comp_t); 2721 2722 mode_buffer = malloc(mode_buffer_len, M_TEMP, M_INTWAIT | M_ZERO); 2723 2724 mode_hdr = (struct scsi_mode_header_6 *)mode_buffer; 2725 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 2726 2727 ccb = cam_periph_getccb(periph, 1); 2728 2729 retry: 2730 2731 if (params_to_set & SA_PARAM_COMPRESSION) { 2732 if (mode_blk) { 2733 cpage = (sa_comp_t *)&mode_blk[1]; 2734 } else { 2735 cpage = (sa_comp_t *)&mode_hdr[1]; 2736 } 2737 bcopy(ccomp, cpage, sizeof (sa_comp_t)); 2738 cpage->hdr.pagecode &= ~0x80; 2739 } else 2740 cpage = NULL; 2741 2742 /* 2743 * If the caller wants us to set the blocksize, use the one they 2744 * pass in. Otherwise, use the blocksize we got back from the 2745 * mode select above. 2746 */ 2747 if (mode_blk) { 2748 if (params_to_set & SA_PARAM_BLOCKSIZE) 2749 scsi_ulto3b(blocksize, mode_blk->blklen); 2750 else 2751 scsi_ulto3b(current_blocksize, mode_blk->blklen); 2752 2753 /* 2754 * Set density if requested, else preserve old density. 2755 * SCSI_SAME_DENSITY only applies to SCSI-2 or better 2756 * devices, else density we've latched up in our softc. 2757 */ 2758 if (params_to_set & SA_PARAM_DENSITY) { 2759 mode_blk->density = density; 2760 } else if (softc->scsi_rev > SCSI_REV_CCS) { 2761 mode_blk->density = SCSI_SAME_DENSITY; 2762 } else { 2763 mode_blk->density = softc->media_density; 2764 } 2765 } 2766 2767 /* 2768 * For mode selects, these two fields must be zero. 2769 */ 2770 mode_hdr->data_length = 0; 2771 mode_hdr->medium_type = 0; 2772 2773 /* set the speed to the current value */ 2774 mode_hdr->dev_spec = current_speed; 2775 2776 /* set single-initiator buffering mode */ 2777 mode_hdr->dev_spec |= SMH_SA_BUF_MODE_SIBUF; 2778 2779 if (mode_blk) 2780 mode_hdr->blk_desc_len = sizeof(struct scsi_mode_blk_desc); 2781 else 2782 mode_hdr->blk_desc_len = 0; 2783 2784 /* 2785 * First, if the user wants us to set the compression algorithm or 2786 * just turn compression on, check to make sure that this drive 2787 * supports compression. 2788 */ 2789 if (params_to_set & SA_PARAM_COMPRESSION) { 2790 /* 2791 * If the compression algorithm is 0, disable compression. 2792 * If the compression algorithm is non-zero, enable 2793 * compression and set the compression type to the 2794 * specified compression algorithm, unless the algorithm is 2795 * MT_COMP_ENABLE. In that case, we look at the 2796 * compression algorithm that is currently set and if it is 2797 * non-zero, we leave it as-is. If it is zero, and we have 2798 * saved a compression algorithm from a time when 2799 * compression was enabled before, set the compression to 2800 * the saved value. 2801 */ 2802 switch (ccomp->hdr.pagecode & ~0x80) { 2803 case SA_DATA_COMPRESSION_PAGE: 2804 if (ccomp->dcomp.dce_and_dcc & SA_DCP_DCC) { 2805 struct scsi_data_compression_page *dcp = &cpage->dcomp; 2806 if (calg == 0) { 2807 /* 2808 * Disable compression, but leave the 2809 * decompression and the capability bit 2810 * alone. 2811 */ 2812 dcp->dce_and_dcc = SA_DCP_DCC; 2813 dcp->dde_and_red |= SA_DCP_DDE; 2814 break; 2815 } 2816 /* enable compression && decompression */ 2817 dcp->dce_and_dcc = SA_DCP_DCE | SA_DCP_DCC; 2818 dcp->dde_and_red |= SA_DCP_DDE; 2819 /* 2820 * If there, use compression algorithm from caller. 2821 * Otherwise, if there's a saved compression algorithm 2822 * and there is no current algorithm, use the saved 2823 * algorithm. Else parrot back what we got and hope 2824 * for the best. 2825 */ 2826 if (calg != MT_COMP_ENABLE) { 2827 scsi_ulto4b(calg, dcp->comp_algorithm); 2828 scsi_ulto4b(calg, dcp->decomp_algorithm); 2829 } else if (scsi_4btoul(dcp->comp_algorithm) == 0 && 2830 softc->saved_comp_algorithm != 0) { 2831 scsi_ulto4b(softc->saved_comp_algorithm, 2832 dcp->comp_algorithm); 2833 scsi_ulto4b(softc->saved_comp_algorithm, 2834 dcp->decomp_algorithm); 2835 } 2836 break; 2837 } 2838 case SA_DEVICE_CONFIGURATION_PAGE: 2839 { 2840 struct scsi_dev_conf_page *dcp = &cpage->dconf; 2841 if (calg == 0) { 2842 dcp->sel_comp_alg = SA_COMP_NONE; 2843 break; 2844 } 2845 if (calg != MT_COMP_ENABLE) { 2846 dcp->sel_comp_alg = calg; 2847 } else if (dcp->sel_comp_alg == SA_COMP_NONE && 2848 softc->saved_comp_algorithm != 0) { 2849 dcp->sel_comp_alg = softc->saved_comp_algorithm; 2850 } 2851 break; 2852 } 2853 default: 2854 /* 2855 * The drive doesn't seem to support compression, 2856 * so turn off the set compression bit. 2857 */ 2858 params_to_set &= ~SA_PARAM_COMPRESSION; 2859 xpt_print_path(periph->path); 2860 printf("device does not seem to support compression\n"); 2861 2862 /* 2863 * If that was the only thing the user wanted us to set, 2864 * clean up allocated resources and return with 2865 * 'operation not supported'. 2866 */ 2867 if (params_to_set == SA_PARAM_NONE) { 2868 free(mode_buffer, M_TEMP); 2869 xpt_release_ccb(ccb); 2870 return (ENODEV); 2871 } 2872 2873 /* 2874 * That wasn't the only thing the user wanted us to set. 2875 * So, decrease the stated mode buffer length by the 2876 * size of the compression mode page. 2877 */ 2878 mode_buffer_len -= sizeof(sa_comp_t); 2879 } 2880 } 2881 2882 /* It is safe to retry this operation */ 2883 scsi_mode_select(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, 2884 (params_to_set & SA_PARAM_COMPRESSION)? TRUE : FALSE, 2885 FALSE, mode_buffer, mode_buffer_len, SSD_FULL_SIZE, SCSIOP_TIMEOUT); 2886 2887 error = cam_periph_runccb(ccb, saerror, 0, 2888 sense_flags, &softc->device_stats); 2889 QFRLS(ccb); 2890 2891 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 2892 int idx; 2893 char *xyz = mode_buffer; 2894 xpt_print_path(periph->path); 2895 printf("Err%d, Mode Select Data=", error); 2896 for (idx = 0; idx < mode_buffer_len; idx++) 2897 printf(" 0x%02x", xyz[idx] & 0xff); 2898 printf("\n"); 2899 } 2900 2901 2902 if (error) { 2903 /* 2904 * If we can, try without setting density/blocksize. 2905 */ 2906 if (mode_blk) { 2907 if ((params_to_set & 2908 (SA_PARAM_DENSITY|SA_PARAM_BLOCKSIZE)) == 0) { 2909 mode_blk = NULL; 2910 goto retry; 2911 } 2912 } else { 2913 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 2914 cpage = (sa_comp_t *)&mode_blk[1]; 2915 } 2916 2917 /* 2918 * If we were setting the blocksize, and that failed, we 2919 * want to set it to its original value. If we weren't 2920 * setting the blocksize, we don't want to change it. 2921 */ 2922 scsi_ulto3b(current_blocksize, mode_blk->blklen); 2923 2924 /* 2925 * Set density if requested, else preserve old density. 2926 * SCSI_SAME_DENSITY only applies to SCSI-2 or better 2927 * devices, else density we've latched up in our softc. 2928 */ 2929 if (params_to_set & SA_PARAM_DENSITY) { 2930 mode_blk->density = current_density; 2931 } else if (softc->scsi_rev > SCSI_REV_CCS) { 2932 mode_blk->density = SCSI_SAME_DENSITY; 2933 } else { 2934 mode_blk->density = softc->media_density; 2935 } 2936 2937 if (params_to_set & SA_PARAM_COMPRESSION) 2938 bcopy(ccomp, cpage, sizeof (sa_comp_t)); 2939 2940 /* 2941 * The retry count is the only CCB field that might have been 2942 * changed that we care about, so reset it back to 1. 2943 */ 2944 ccb->ccb_h.retry_count = 1; 2945 cam_periph_runccb(ccb, saerror, 0, sense_flags, 2946 &softc->device_stats); 2947 QFRLS(ccb); 2948 } 2949 2950 xpt_release_ccb(ccb); 2951 2952 if (ccomp != NULL) 2953 free(ccomp, M_TEMP); 2954 2955 if (params_to_set & SA_PARAM_COMPRESSION) { 2956 if (error) { 2957 softc->flags &= ~SA_FLAG_COMP_ENABLED; 2958 /* 2959 * Even if we get an error setting compression, 2960 * do not say that we don't support it. We could 2961 * have been wrong, or it may be media specific. 2962 * softc->flags &= ~SA_FLAG_COMP_SUPP; 2963 */ 2964 softc->saved_comp_algorithm = softc->comp_algorithm; 2965 softc->comp_algorithm = 0; 2966 } else { 2967 softc->flags |= SA_FLAG_COMP_ENABLED; 2968 softc->comp_algorithm = calg; 2969 } 2970 } 2971 2972 free(mode_buffer, M_TEMP); 2973 return (error); 2974 } 2975 2976 static void 2977 saprevent(struct cam_periph *periph, int action) 2978 { 2979 struct sa_softc *softc; 2980 union ccb *ccb; 2981 int error, sf; 2982 2983 softc = (struct sa_softc *)periph->softc; 2984 2985 if ((action == PR_ALLOW) && (softc->flags & SA_FLAG_TAPE_LOCKED) == 0) 2986 return; 2987 if ((action == PR_PREVENT) && (softc->flags & SA_FLAG_TAPE_LOCKED) != 0) 2988 return; 2989 2990 /* 2991 * We can be quiet about illegal requests. 2992 */ 2993 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 2994 sf = 0; 2995 } else 2996 sf = SF_QUIET_IR; 2997 2998 ccb = cam_periph_getccb(periph, 1); 2999 3000 /* It is safe to retry this operation */ 3001 scsi_prevent(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, action, 3002 SSD_FULL_SIZE, SCSIOP_TIMEOUT); 3003 3004 error = cam_periph_runccb(ccb, saerror, 0, sf, &softc->device_stats); 3005 QFRLS(ccb); 3006 if (error == 0) { 3007 if (action == PR_ALLOW) 3008 softc->flags &= ~SA_FLAG_TAPE_LOCKED; 3009 else 3010 softc->flags |= SA_FLAG_TAPE_LOCKED; 3011 } 3012 3013 xpt_release_ccb(ccb); 3014 } 3015 3016 static int 3017 sarewind(struct cam_periph *periph) 3018 { 3019 union ccb *ccb; 3020 struct sa_softc *softc; 3021 int error; 3022 3023 softc = (struct sa_softc *)periph->softc; 3024 3025 ccb = cam_periph_getccb(periph, 1); 3026 3027 /* It is safe to retry this operation */ 3028 scsi_rewind(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 3029 SSD_FULL_SIZE, REWIND_TIMEOUT); 3030 3031 softc->dsreg = MTIO_DSREG_REW; 3032 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 3033 softc->dsreg = MTIO_DSREG_REST; 3034 3035 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3036 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 3037 3038 xpt_release_ccb(ccb); 3039 if (error == 0) 3040 softc->fileno = softc->blkno = (daddr_t) 0; 3041 else 3042 softc->fileno = softc->blkno = (daddr_t) -1; 3043 return (error); 3044 } 3045 3046 static int 3047 saspace(struct cam_periph *periph, int count, scsi_space_code code) 3048 { 3049 union ccb *ccb; 3050 struct sa_softc *softc; 3051 int error; 3052 3053 softc = (struct sa_softc *)periph->softc; 3054 3055 ccb = cam_periph_getccb(periph, 1); 3056 3057 /* This cannot be retried */ 3058 3059 scsi_space(&ccb->csio, 0, sadone, MSG_SIMPLE_Q_TAG, code, count, 3060 SSD_FULL_SIZE, SPACE_TIMEOUT); 3061 3062 /* 3063 * Clear residual because we will be using it. 3064 */ 3065 softc->last_ctl_resid = 0; 3066 3067 softc->dsreg = (count < 0)? MTIO_DSREG_REV : MTIO_DSREG_FWD; 3068 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 3069 softc->dsreg = MTIO_DSREG_REST; 3070 3071 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3072 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 3073 3074 xpt_release_ccb(ccb); 3075 3076 /* 3077 * If a spacing operation has failed, we need to invalidate 3078 * this mount. 3079 * 3080 * If the spacing operation was setmarks or to end of recorded data, 3081 * we no longer know our relative position. 3082 * 3083 * If the spacing operations was spacing files in reverse, we 3084 * take account of the residual, but still check against less 3085 * than zero- if we've gone negative, we must have hit BOT. 3086 * 3087 * If the spacing operations was spacing records in reverse and 3088 * we have a residual, we've either hit BOT or hit a filemark. 3089 * In the former case, we know our new record number (0). In 3090 * the latter case, we have absolutely no idea what the real 3091 * record number is- we've stopped between the end of the last 3092 * record in the previous file and the filemark that stopped 3093 * our spacing backwards. 3094 */ 3095 if (error) { 3096 softc->fileno = softc->blkno = (daddr_t) -1; 3097 } else if (code == SS_SETMARKS || code == SS_EOD) { 3098 softc->fileno = softc->blkno = (daddr_t) -1; 3099 } else if (code == SS_FILEMARKS && softc->fileno != (daddr_t) -1) { 3100 softc->fileno += (count - softc->last_ctl_resid); 3101 if (softc->fileno < 0) /* we must of hit BOT */ 3102 softc->fileno = 0; 3103 softc->blkno = 0; 3104 } else if (code == SS_BLOCKS && softc->blkno != (daddr_t) -1) { 3105 softc->blkno += (count - softc->last_ctl_resid); 3106 if (count < 0) { 3107 if (softc->last_ctl_resid || softc->blkno < 0) { 3108 if (softc->fileno == 0) { 3109 softc->blkno = 0; 3110 } else { 3111 softc->blkno = (daddr_t) -1; 3112 } 3113 } 3114 } 3115 } 3116 return (error); 3117 } 3118 3119 static int 3120 sawritefilemarks(struct cam_periph *periph, int nmarks, int setmarks) 3121 { 3122 union ccb *ccb; 3123 struct sa_softc *softc; 3124 int error, nwm = 0; 3125 3126 softc = (struct sa_softc *)periph->softc; 3127 3128 ccb = cam_periph_getccb(periph, 1); 3129 /* 3130 * Clear residual because we will be using it. 3131 */ 3132 softc->last_ctl_resid = 0; 3133 3134 softc->dsreg = MTIO_DSREG_FMK; 3135 /* this *must* not be retried */ 3136 scsi_write_filemarks(&ccb->csio, 0, sadone, MSG_SIMPLE_Q_TAG, 3137 FALSE, setmarks, nmarks, SSD_FULL_SIZE, IO_TIMEOUT); 3138 softc->dsreg = MTIO_DSREG_REST; 3139 3140 3141 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 3142 3143 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3144 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 3145 3146 if (error == 0 && nmarks) { 3147 struct sa_softc *softc = (struct sa_softc *)periph->softc; 3148 nwm = nmarks - softc->last_ctl_resid; 3149 softc->filemarks += nwm; 3150 } 3151 3152 xpt_release_ccb(ccb); 3153 3154 /* 3155 * Update relative positions (if we're doing that). 3156 */ 3157 if (error) { 3158 softc->fileno = softc->blkno = (daddr_t) -1; 3159 } else if (softc->fileno != (daddr_t) -1) { 3160 softc->fileno += nwm; 3161 softc->blkno = 0; 3162 } 3163 return (error); 3164 } 3165 3166 static int 3167 sardpos(struct cam_periph *periph, int hard, u_int32_t *blkptr) 3168 { 3169 struct scsi_tape_position_data loc; 3170 union ccb *ccb; 3171 struct sa_softc *softc = (struct sa_softc *)periph->softc; 3172 int error; 3173 3174 /* 3175 * We try and flush any buffered writes here if we were writing 3176 * and we're trying to get hardware block position. It eats 3177 * up performance substantially, but I'm wary of drive firmware. 3178 * 3179 * I think that *logical* block position is probably okay- 3180 * but hardware block position might have to wait for data 3181 * to hit media to be valid. Caveat Emptor. 3182 */ 3183 3184 if (hard && (softc->flags & SA_FLAG_TAPE_WRITTEN)) { 3185 error = sawritefilemarks(periph, 0, 0); 3186 if (error && error != EACCES) 3187 return (error); 3188 } 3189 3190 ccb = cam_periph_getccb(periph, 1); 3191 scsi_read_position(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, 3192 hard, &loc, SSD_FULL_SIZE, SCSIOP_TIMEOUT); 3193 softc->dsreg = MTIO_DSREG_RBSY; 3194 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 3195 softc->dsreg = MTIO_DSREG_REST; 3196 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3197 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, 0); 3198 3199 if (error == 0) { 3200 if (loc.flags & SA_RPOS_UNCERTAIN) { 3201 error = EINVAL; /* nothing is certain */ 3202 } else { 3203 *blkptr = scsi_4btoul(loc.firstblk); 3204 } 3205 } 3206 3207 xpt_release_ccb(ccb); 3208 return (error); 3209 } 3210 3211 static int 3212 sasetpos(struct cam_periph *periph, int hard, u_int32_t *blkptr) 3213 { 3214 union ccb *ccb; 3215 struct sa_softc *softc; 3216 int error; 3217 3218 /* 3219 * We used to try and flush any buffered writes here. 3220 * Now we push this onto user applications to either 3221 * flush the pending writes themselves (via a zero count 3222 * WRITE FILEMARKS command) or they can trust their tape 3223 * drive to do this correctly for them. 3224 */ 3225 3226 softc = (struct sa_softc *)periph->softc; 3227 ccb = cam_periph_getccb(periph, 1); 3228 3229 3230 scsi_set_position(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, 3231 hard, *blkptr, SSD_FULL_SIZE, SPACE_TIMEOUT); 3232 3233 3234 softc->dsreg = MTIO_DSREG_POS; 3235 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 3236 softc->dsreg = MTIO_DSREG_REST; 3237 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3238 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, 0); 3239 xpt_release_ccb(ccb); 3240 /* 3241 * Note relative file && block number position as now unknown. 3242 */ 3243 softc->fileno = softc->blkno = (daddr_t) -1; 3244 return (error); 3245 } 3246 3247 static int 3248 saretension(struct cam_periph *periph) 3249 { 3250 union ccb *ccb; 3251 struct sa_softc *softc; 3252 int error; 3253 3254 softc = (struct sa_softc *)periph->softc; 3255 3256 ccb = cam_periph_getccb(periph, 1); 3257 3258 /* It is safe to retry this operation */ 3259 scsi_load_unload(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 3260 FALSE, TRUE, TRUE, SSD_FULL_SIZE, ERASE_TIMEOUT); 3261 3262 softc->dsreg = MTIO_DSREG_TEN; 3263 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 3264 softc->dsreg = MTIO_DSREG_REST; 3265 3266 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3267 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 3268 xpt_release_ccb(ccb); 3269 if (error == 0) 3270 softc->fileno = softc->blkno = (daddr_t) 0; 3271 else 3272 softc->fileno = softc->blkno = (daddr_t) -1; 3273 return (error); 3274 } 3275 3276 static int 3277 sareservereleaseunit(struct cam_periph *periph, int reserve) 3278 { 3279 union ccb *ccb; 3280 struct sa_softc *softc; 3281 int error; 3282 3283 softc = (struct sa_softc *)periph->softc; 3284 ccb = cam_periph_getccb(periph, 1); 3285 3286 /* It is safe to retry this operation */ 3287 scsi_reserve_release_unit(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, 3288 FALSE, 0, SSD_FULL_SIZE, SCSIOP_TIMEOUT, reserve); 3289 softc->dsreg = MTIO_DSREG_RBSY; 3290 error = cam_periph_runccb(ccb, saerror, 0, 3291 SF_RETRY_UA | SF_NO_PRINT, &softc->device_stats); 3292 softc->dsreg = MTIO_DSREG_REST; 3293 QFRLS(ccb); 3294 xpt_release_ccb(ccb); 3295 3296 /* 3297 * If the error was Illegal Request, then the device doesn't support 3298 * RESERVE/RELEASE. This is not an error. 3299 */ 3300 if (error == EINVAL) { 3301 error = 0; 3302 } 3303 3304 return (error); 3305 } 3306 3307 static int 3308 saloadunload(struct cam_periph *periph, int load) 3309 { 3310 union ccb *ccb; 3311 struct sa_softc *softc; 3312 int error; 3313 3314 softc = (struct sa_softc *)periph->softc; 3315 3316 ccb = cam_periph_getccb(periph, 1); 3317 3318 /* It is safe to retry this operation */ 3319 scsi_load_unload(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 3320 FALSE, FALSE, load, SSD_FULL_SIZE, REWIND_TIMEOUT); 3321 3322 softc->dsreg = (load)? MTIO_DSREG_LD : MTIO_DSREG_UNL; 3323 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 3324 softc->dsreg = MTIO_DSREG_REST; 3325 QFRLS(ccb); 3326 xpt_release_ccb(ccb); 3327 3328 if (error || load == 0) 3329 softc->fileno = softc->blkno = (daddr_t) -1; 3330 else if (error == 0) 3331 softc->fileno = softc->blkno = (daddr_t) 0; 3332 return (error); 3333 } 3334 3335 static int 3336 saerase(struct cam_periph *periph, int longerase) 3337 { 3338 3339 union ccb *ccb; 3340 struct sa_softc *softc; 3341 int error; 3342 3343 softc = (struct sa_softc *)periph->softc; 3344 3345 ccb = cam_periph_getccb(periph, 1); 3346 3347 scsi_erase(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, FALSE, longerase, 3348 SSD_FULL_SIZE, ERASE_TIMEOUT); 3349 3350 softc->dsreg = MTIO_DSREG_ZER; 3351 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 3352 softc->dsreg = MTIO_DSREG_REST; 3353 3354 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3355 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 3356 xpt_release_ccb(ccb); 3357 return (error); 3358 } 3359 3360 #endif /* _KERNEL */ 3361 3362 /* 3363 * Read tape block limits command. 3364 */ 3365 void 3366 scsi_read_block_limits(struct ccb_scsiio *csio, u_int32_t retries, 3367 void (*cbfcnp)(struct cam_periph *, union ccb *), 3368 u_int8_t tag_action, 3369 struct scsi_read_block_limits_data *rlimit_buf, 3370 u_int8_t sense_len, u_int32_t timeout) 3371 { 3372 struct scsi_read_block_limits *scsi_cmd; 3373 3374 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_IN, tag_action, 3375 (u_int8_t *)rlimit_buf, sizeof(*rlimit_buf), sense_len, 3376 sizeof(*scsi_cmd), timeout); 3377 3378 scsi_cmd = (struct scsi_read_block_limits *)&csio->cdb_io.cdb_bytes; 3379 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3380 scsi_cmd->opcode = READ_BLOCK_LIMITS; 3381 } 3382 3383 void 3384 scsi_sa_read_write(struct ccb_scsiio *csio, u_int32_t retries, 3385 void (*cbfcnp)(struct cam_periph *, union ccb *), 3386 u_int8_t tag_action, int readop, int sli, 3387 int fixed, u_int32_t length, u_int8_t *data_ptr, 3388 u_int32_t dxfer_len, u_int8_t sense_len, u_int32_t timeout) 3389 { 3390 struct scsi_sa_rw *scsi_cmd; 3391 3392 scsi_cmd = (struct scsi_sa_rw *)&csio->cdb_io.cdb_bytes; 3393 scsi_cmd->opcode = readop ? SA_READ : SA_WRITE; 3394 scsi_cmd->sli_fixed = 0; 3395 if (sli && readop) 3396 scsi_cmd->sli_fixed |= SAR_SLI; 3397 if (fixed) 3398 scsi_cmd->sli_fixed |= SARW_FIXED; 3399 scsi_ulto3b(length, scsi_cmd->length); 3400 scsi_cmd->control = 0; 3401 3402 cam_fill_csio(csio, retries, cbfcnp, readop ? CAM_DIR_IN : CAM_DIR_OUT, 3403 tag_action, data_ptr, dxfer_len, sense_len, 3404 sizeof(*scsi_cmd), timeout); 3405 } 3406 3407 void 3408 scsi_load_unload(struct ccb_scsiio *csio, u_int32_t retries, 3409 void (*cbfcnp)(struct cam_periph *, union ccb *), 3410 u_int8_t tag_action, int immediate, int eot, 3411 int reten, int load, u_int8_t sense_len, 3412 u_int32_t timeout) 3413 { 3414 struct scsi_load_unload *scsi_cmd; 3415 3416 scsi_cmd = (struct scsi_load_unload *)&csio->cdb_io.cdb_bytes; 3417 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3418 scsi_cmd->opcode = LOAD_UNLOAD; 3419 if (immediate) 3420 scsi_cmd->immediate = SLU_IMMED; 3421 if (eot) 3422 scsi_cmd->eot_reten_load |= SLU_EOT; 3423 if (reten) 3424 scsi_cmd->eot_reten_load |= SLU_RETEN; 3425 if (load) 3426 scsi_cmd->eot_reten_load |= SLU_LOAD; 3427 3428 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, 3429 NULL, 0, sense_len, sizeof(*scsi_cmd), timeout); 3430 } 3431 3432 void 3433 scsi_rewind(struct ccb_scsiio *csio, u_int32_t retries, 3434 void (*cbfcnp)(struct cam_periph *, union ccb *), 3435 u_int8_t tag_action, int immediate, u_int8_t sense_len, 3436 u_int32_t timeout) 3437 { 3438 struct scsi_rewind *scsi_cmd; 3439 3440 scsi_cmd = (struct scsi_rewind *)&csio->cdb_io.cdb_bytes; 3441 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3442 scsi_cmd->opcode = REWIND; 3443 if (immediate) 3444 scsi_cmd->immediate = SREW_IMMED; 3445 3446 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3447 0, sense_len, sizeof(*scsi_cmd), timeout); 3448 } 3449 3450 void 3451 scsi_space(struct ccb_scsiio *csio, u_int32_t retries, 3452 void (*cbfcnp)(struct cam_periph *, union ccb *), 3453 u_int8_t tag_action, scsi_space_code code, 3454 u_int32_t count, u_int8_t sense_len, u_int32_t timeout) 3455 { 3456 struct scsi_space *scsi_cmd; 3457 3458 scsi_cmd = (struct scsi_space *)&csio->cdb_io.cdb_bytes; 3459 scsi_cmd->opcode = SPACE; 3460 scsi_cmd->code = code; 3461 scsi_ulto3b(count, scsi_cmd->count); 3462 scsi_cmd->control = 0; 3463 3464 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3465 0, sense_len, sizeof(*scsi_cmd), timeout); 3466 } 3467 3468 void 3469 scsi_write_filemarks(struct ccb_scsiio *csio, u_int32_t retries, 3470 void (*cbfcnp)(struct cam_periph *, union ccb *), 3471 u_int8_t tag_action, int immediate, int setmark, 3472 u_int32_t num_marks, u_int8_t sense_len, 3473 u_int32_t timeout) 3474 { 3475 struct scsi_write_filemarks *scsi_cmd; 3476 3477 scsi_cmd = (struct scsi_write_filemarks *)&csio->cdb_io.cdb_bytes; 3478 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3479 scsi_cmd->opcode = WRITE_FILEMARKS; 3480 if (immediate) 3481 scsi_cmd->byte2 |= SWFMRK_IMMED; 3482 if (setmark) 3483 scsi_cmd->byte2 |= SWFMRK_WSMK; 3484 3485 scsi_ulto3b(num_marks, scsi_cmd->num_marks); 3486 3487 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3488 0, sense_len, sizeof(*scsi_cmd), timeout); 3489 } 3490 3491 /* 3492 * The reserve and release unit commands differ only by their opcodes. 3493 */ 3494 void 3495 scsi_reserve_release_unit(struct ccb_scsiio *csio, u_int32_t retries, 3496 void (*cbfcnp)(struct cam_periph *, union ccb *), 3497 u_int8_t tag_action, int third_party, 3498 int third_party_id, u_int8_t sense_len, 3499 u_int32_t timeout, int reserve) 3500 { 3501 struct scsi_reserve_release_unit *scsi_cmd; 3502 3503 scsi_cmd = (struct scsi_reserve_release_unit *)&csio->cdb_io.cdb_bytes; 3504 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3505 3506 if (reserve) 3507 scsi_cmd->opcode = RESERVE_UNIT; 3508 else 3509 scsi_cmd->opcode = RELEASE_UNIT; 3510 3511 if (third_party) { 3512 scsi_cmd->lun_thirdparty |= SRRU_3RD_PARTY; 3513 scsi_cmd->lun_thirdparty |= 3514 ((third_party_id << SRRU_3RD_SHAMT) & SRRU_3RD_MASK); 3515 } 3516 3517 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3518 0, sense_len, sizeof(*scsi_cmd), timeout); 3519 } 3520 3521 void 3522 scsi_erase(struct ccb_scsiio *csio, u_int32_t retries, 3523 void (*cbfcnp)(struct cam_periph *, union ccb *), 3524 u_int8_t tag_action, int immediate, int long_erase, 3525 u_int8_t sense_len, u_int32_t timeout) 3526 { 3527 struct scsi_erase *scsi_cmd; 3528 3529 scsi_cmd = (struct scsi_erase *)&csio->cdb_io.cdb_bytes; 3530 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3531 3532 scsi_cmd->opcode = ERASE; 3533 3534 if (immediate) 3535 scsi_cmd->lun_imm_long |= SE_IMMED; 3536 3537 if (long_erase) 3538 scsi_cmd->lun_imm_long |= SE_LONG; 3539 3540 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3541 0, sense_len, sizeof(*scsi_cmd), timeout); 3542 } 3543 3544 /* 3545 * Read Tape Position command. 3546 */ 3547 void 3548 scsi_read_position(struct ccb_scsiio *csio, u_int32_t retries, 3549 void (*cbfcnp)(struct cam_periph *, union ccb *), 3550 u_int8_t tag_action, int hardsoft, 3551 struct scsi_tape_position_data *sbp, 3552 u_int8_t sense_len, u_int32_t timeout) 3553 { 3554 struct scsi_tape_read_position *scmd; 3555 3556 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_IN, tag_action, 3557 (u_int8_t *)sbp, sizeof (*sbp), sense_len, sizeof(*scmd), timeout); 3558 scmd = (struct scsi_tape_read_position *)&csio->cdb_io.cdb_bytes; 3559 bzero(scmd, sizeof(*scmd)); 3560 scmd->opcode = READ_POSITION; 3561 scmd->byte1 = hardsoft; 3562 } 3563 3564 /* 3565 * Set Tape Position command. 3566 */ 3567 void 3568 scsi_set_position(struct ccb_scsiio *csio, u_int32_t retries, 3569 void (*cbfcnp)(struct cam_periph *, union ccb *), 3570 u_int8_t tag_action, int hardsoft, u_int32_t blkno, 3571 u_int8_t sense_len, u_int32_t timeout) 3572 { 3573 struct scsi_tape_locate *scmd; 3574 3575 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, 3576 (u_int8_t *)NULL, 0, sense_len, sizeof(*scmd), timeout); 3577 scmd = (struct scsi_tape_locate *)&csio->cdb_io.cdb_bytes; 3578 bzero(scmd, sizeof(*scmd)); 3579 scmd->opcode = LOCATE; 3580 if (hardsoft) 3581 scmd->byte1 |= SA_SPOS_BT; 3582 scsi_ulto4b(blkno, scmd->blkaddr); 3583 } 3584