1 /* 2 * $FreeBSD$ 3 * 4 * Implementation of SCSI Sequential Access Peripheral driver for CAM. 5 * 6 * Copyright (c) 1999, 2000 Matthew Jacob 7 * All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions, and the following disclaimer, 14 * without modification, immediately at the beginning of the file. 15 * 2. The name of the author may not be used to endorse or promote products 16 * derived from this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR 22 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 * 30 */ 31 32 #include <sys/param.h> 33 #include <sys/queue.h> 34 #ifdef _KERNEL 35 #include <sys/systm.h> 36 #include <sys/kernel.h> 37 #endif 38 #include <sys/types.h> 39 #include <sys/buf.h> 40 #include <sys/malloc.h> 41 #include <sys/mtio.h> 42 #include <sys/conf.h> 43 #include <sys/devicestat.h> 44 #include <machine/limits.h> 45 46 #ifndef _KERNEL 47 #include <stdio.h> 48 #include <string.h> 49 #endif 50 51 #include <cam/cam.h> 52 #include <cam/cam_ccb.h> 53 #include <cam/cam_extend.h> 54 #include <cam/cam_periph.h> 55 #include <cam/cam_xpt_periph.h> 56 #include <cam/cam_debug.h> 57 58 #include <cam/scsi/scsi_all.h> 59 #include <cam/scsi/scsi_message.h> 60 #include <cam/scsi/scsi_sa.h> 61 62 #ifdef _KERNEL 63 64 #include <opt_sa.h> 65 66 #ifndef SA_SPACE_TIMEOUT 67 #define SA_SPACE_TIMEOUT 1 * 60 68 #endif 69 #ifndef SA_REWIND_TIMEOUT 70 #define SA_REWIND_TIMEOUT 2 * 60 71 #endif 72 #ifndef SA_ERASE_TIMEOUT 73 #define SA_ERASE_TIMEOUT 4 * 60 74 #endif 75 76 #define REWIND_TIMEOUT (SA_REWIND_TIMEOUT * 60 * 1000) 77 #define ERASE_TIMEOUT (SA_ERASE_TIMEOUT * 60 * 1000) 78 #define SPACE_TIMEOUT (SA_SPACE_TIMEOUT * 60 * 1000) 79 80 /* 81 * Additional options that can be set for config: SA_1FM_AT_EOT 82 */ 83 84 #ifndef UNUSED_PARAMETER 85 #define UNUSED_PARAMETER(x) x = x 86 #endif 87 88 #define QFRLS(ccb) \ 89 if (((ccb)->ccb_h.status & CAM_DEV_QFRZN) != 0) \ 90 cam_release_devq((ccb)->ccb_h.path, 0, 0, 0, FALSE) 91 92 /* 93 * Driver states 94 */ 95 96 97 typedef enum { 98 SA_STATE_NORMAL, SA_STATE_ABNORMAL 99 } sa_state; 100 101 typedef enum { 102 SA_CCB_BUFFER_IO, 103 SA_CCB_WAITING 104 } sa_ccb_types; 105 106 #define ccb_type ppriv_field0 107 #define ccb_bp ppriv_ptr1 108 109 typedef enum { 110 SA_FLAG_OPEN = 0x0001, 111 SA_FLAG_FIXED = 0x0002, 112 SA_FLAG_TAPE_LOCKED = 0x0004, 113 SA_FLAG_TAPE_MOUNTED = 0x0008, 114 SA_FLAG_TAPE_WP = 0x0010, 115 SA_FLAG_TAPE_WRITTEN = 0x0020, 116 SA_FLAG_EOM_PENDING = 0x0040, 117 SA_FLAG_EIO_PENDING = 0x0080, 118 SA_FLAG_EOF_PENDING = 0x0100, 119 SA_FLAG_ERR_PENDING = (SA_FLAG_EOM_PENDING|SA_FLAG_EIO_PENDING| 120 SA_FLAG_EOF_PENDING), 121 SA_FLAG_INVALID = 0x0200, 122 SA_FLAG_COMP_ENABLED = 0x0400, 123 SA_FLAG_COMP_SUPP = 0x0800, 124 SA_FLAG_COMP_UNSUPP = 0x1000, 125 SA_FLAG_TAPE_FROZEN = 0x2000 126 } sa_flags; 127 128 typedef enum { 129 SA_MODE_REWIND = 0x00, 130 SA_MODE_NOREWIND = 0x01, 131 SA_MODE_OFFLINE = 0x02 132 } sa_mode; 133 134 typedef enum { 135 SA_PARAM_NONE = 0x00, 136 SA_PARAM_BLOCKSIZE = 0x01, 137 SA_PARAM_DENSITY = 0x02, 138 SA_PARAM_COMPRESSION = 0x04, 139 SA_PARAM_BUFF_MODE = 0x08, 140 SA_PARAM_NUMBLOCKS = 0x10, 141 SA_PARAM_WP = 0x20, 142 SA_PARAM_SPEED = 0x40, 143 SA_PARAM_ALL = 0x7f 144 } sa_params; 145 146 typedef enum { 147 SA_QUIRK_NONE = 0x00, 148 SA_QUIRK_NOCOMP = 0x01, /* can't deal with compression at all */ 149 SA_QUIRK_FIXED = 0x02, /* force fixed mode */ 150 SA_QUIRK_VARIABLE = 0x04, /* force variable mode */ 151 SA_QUIRK_2FM = 0x08, /* Needs Two File Marks at EOD */ 152 SA_QUIRK_1FM = 0x10, /* No more than 1 File Mark at EOD */ 153 SA_QUIRK_NODREAD = 0x20 /* Don't try and dummy read density */ 154 } sa_quirks; 155 156 /* units are bits 4-7, 16-21 (1024 units) */ 157 #define SAUNIT(DEV) \ 158 (((minor(DEV) & 0xF0) >> 4) | ((minor(DEV) & 0x3f0000) >> 16)) 159 160 #define SAMODE(z) ((minor(z) & 0x3)) 161 #define SADENSITY(z) (((minor(z) >> 2) & 0x3)) 162 #define SA_IS_CTRL(z) (minor(z) & (1 << 29)) 163 164 #define SA_NOT_CTLDEV 0 165 #define SA_CTLDEV 1 166 167 #define SA_ATYPE_R 0 168 #define SA_ATYPE_NR 1 169 #define SA_ATYPE_ER 2 170 171 #define SAMINOR(ctl, unit, mode, access) \ 172 ((ctl << 29) | ((unit & 0x3f0) << 16) | ((unit & 0xf) << 4) | \ 173 (mode << 0x2) | (access & 0x3)) 174 175 #define SA_NUM_MODES 4 176 struct sa_devs { 177 dev_t ctl_dev; 178 struct sa_mode_devs { 179 dev_t r_dev; 180 dev_t nr_dev; 181 dev_t er_dev; 182 } mode_devs[SA_NUM_MODES]; 183 dev_t r_dev; 184 dev_t nr_dev; 185 dev_t er_dev; 186 }; 187 188 struct sa_softc { 189 sa_state state; 190 sa_flags flags; 191 sa_quirks quirks; 192 struct bio_queue_head bio_queue; 193 int queue_count; 194 struct devstat device_stats; 195 struct sa_devs devs; 196 int blk_gran; 197 int blk_mask; 198 int blk_shift; 199 u_int32_t max_blk; 200 u_int32_t min_blk; 201 u_int32_t comp_algorithm; 202 u_int32_t saved_comp_algorithm; 203 u_int32_t media_blksize; 204 u_int32_t last_media_blksize; 205 u_int32_t media_numblks; 206 u_int8_t media_density; 207 u_int8_t speed; 208 u_int8_t scsi_rev; 209 u_int8_t dsreg; /* mtio mt_dsreg, redux */ 210 int buffer_mode; 211 int filemarks; 212 union ccb saved_ccb; 213 214 /* 215 * Relative to BOT Location. 216 */ 217 daddr_t fileno; 218 daddr_t blkno; 219 220 /* 221 * Latched Error Info 222 */ 223 struct { 224 struct scsi_sense_data _last_io_sense; 225 u_int32_t _last_io_resid; 226 u_int8_t _last_io_cdb[CAM_MAX_CDBLEN]; 227 struct scsi_sense_data _last_ctl_sense; 228 u_int32_t _last_ctl_resid; 229 u_int8_t _last_ctl_cdb[CAM_MAX_CDBLEN]; 230 #define last_io_sense errinfo._last_io_sense 231 #define last_io_resid errinfo._last_io_resid 232 #define last_io_cdb errinfo._last_io_cdb 233 #define last_ctl_sense errinfo._last_ctl_sense 234 #define last_ctl_resid errinfo._last_ctl_resid 235 #define last_ctl_cdb errinfo._last_ctl_cdb 236 } errinfo; 237 /* 238 * Misc other flags/state 239 */ 240 u_int32_t 241 : 31, 242 ctrl_mode : 1; /* control device open */ 243 }; 244 245 struct sa_quirk_entry { 246 struct scsi_inquiry_pattern inq_pat; /* matching pattern */ 247 sa_quirks quirks; /* specific quirk type */ 248 u_int32_t prefblk; /* preferred blocksize when in fixed mode */ 249 }; 250 251 static struct sa_quirk_entry sa_quirk_table[] = 252 { 253 { 254 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 255 "Python 25601*", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_NODREAD, 0 256 }, 257 { 258 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 259 "Python*", "*"}, SA_QUIRK_NODREAD, 0 260 }, 261 { 262 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 263 "VIPER 150*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 264 }, 265 { 266 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 267 "VIPER 2525*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 1024 268 }, 269 { 270 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 271 "T20*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 272 }, 273 { 274 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 275 "T4000*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 276 }, 277 { 278 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 279 "HP-88780*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 280 }, 281 { 282 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "KENNEDY", 283 "*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 284 }, 285 { 286 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "M4 DATA", 287 "123107 SCSI*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 288 }, 289 { /* jreynold@primenet.com */ 290 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "Seagate", 291 "STT8000N*", "*"}, SA_QUIRK_1FM, 0 292 }, 293 { /* mike@sentex.net */ 294 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "Seagate", 295 "STT20000*", "*"}, SA_QUIRK_1FM, 0 296 }, 297 { 298 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 299 " TDC 3600", "U07:"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 300 }, 301 { 302 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 303 " TDC 3800", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 304 }, 305 { 306 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 307 " TDC 4100", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 308 }, 309 { 310 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 311 " TDC 4200", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 312 }, 313 { 314 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 315 " SLR*", "*"}, SA_QUIRK_1FM, 0 316 }, 317 { 318 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "WANGTEK", 319 "5525ES*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 320 }, 321 { 322 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "WANGTEK", 323 "51000*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 1024 324 } 325 }; 326 327 static d_open_t saopen; 328 static d_close_t saclose; 329 static d_strategy_t sastrategy; 330 static d_ioctl_t saioctl; 331 static periph_init_t sainit; 332 static periph_ctor_t saregister; 333 static periph_oninv_t saoninvalidate; 334 static periph_dtor_t sacleanup; 335 static periph_start_t sastart; 336 static void saasync(void *callback_arg, u_int32_t code, 337 struct cam_path *path, void *arg); 338 static void sadone(struct cam_periph *periph, 339 union ccb *start_ccb); 340 static int saerror(union ccb *ccb, u_int32_t cam_flags, 341 u_int32_t sense_flags); 342 static int sacheckeod(struct cam_periph *periph); 343 static int sagetparams(struct cam_periph *periph, 344 sa_params params_to_get, 345 u_int32_t *blocksize, u_int8_t *density, 346 u_int32_t *numblocks, int *buff_mode, 347 u_int8_t *write_protect, u_int8_t *speed, 348 int *comp_supported, int *comp_enabled, 349 u_int32_t *comp_algorithm, 350 sa_comp_t *comp_page); 351 static int sasetparams(struct cam_periph *periph, 352 sa_params params_to_set, 353 u_int32_t blocksize, u_int8_t density, 354 u_int32_t comp_algorithm, 355 u_int32_t sense_flags); 356 static void saprevent(struct cam_periph *periph, int action); 357 static int sarewind(struct cam_periph *periph); 358 static int saspace(struct cam_periph *periph, int count, 359 scsi_space_code code); 360 static int samount(struct cam_periph *, int, dev_t); 361 static int saretension(struct cam_periph *periph); 362 static int sareservereleaseunit(struct cam_periph *periph, 363 int reserve); 364 static int saloadunload(struct cam_periph *periph, int load); 365 static int saerase(struct cam_periph *periph, int longerase); 366 static int sawritefilemarks(struct cam_periph *periph, 367 int nmarks, int setmarks); 368 static int sardpos(struct cam_periph *periph, int, u_int32_t *); 369 static int sasetpos(struct cam_periph *periph, int, u_int32_t *); 370 371 372 static struct periph_driver sadriver = 373 { 374 sainit, "sa", 375 TAILQ_HEAD_INITIALIZER(sadriver.units), /* generation */ 0 376 }; 377 378 DATA_SET(periphdriver_set, sadriver); 379 380 /* For 2.2-stable support */ 381 #ifndef D_TAPE 382 #define D_TAPE 0 383 #endif 384 385 #define SA_CDEV_MAJOR 14 386 387 static struct cdevsw sa_cdevsw = { 388 /* open */ saopen, 389 /* close */ saclose, 390 /* read */ physread, 391 /* write */ physwrite, 392 /* ioctl */ saioctl, 393 /* poll */ nopoll, 394 /* mmap */ nommap, 395 /* strategy */ sastrategy, 396 /* name */ "sa", 397 /* maj */ SA_CDEV_MAJOR, 398 /* dump */ nodump, 399 /* psize */ nopsize, 400 /* flags */ D_TAPE, 401 /* bmaj */ -1 402 }; 403 404 static struct extend_array *saperiphs; 405 406 static int 407 saopen(dev_t dev, int flags, int fmt, struct proc *p) 408 { 409 struct cam_periph *periph; 410 struct sa_softc *softc; 411 int unit; 412 int mode; 413 int density; 414 int error; 415 int s; 416 417 unit = SAUNIT(dev); 418 mode = SAMODE(dev); 419 density = SADENSITY(dev); 420 421 s = splsoftcam(); 422 periph = cam_extend_get(saperiphs, unit); 423 if (periph == NULL) { 424 (void) splx(s); 425 return (ENXIO); 426 } 427 softc = (struct sa_softc *)periph->softc; 428 if ((error = cam_periph_lock(periph, PRIBIO|PCATCH)) != 0) { 429 splx(s); 430 return (error); 431 } 432 splx(s); 433 434 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE|CAM_DEBUG_INFO, 435 ("saopen(%d): dev=0x%x softc=0x%x\n", unit, unit, softc->flags)); 436 437 if (cam_periph_acquire(periph) != CAM_REQ_CMP) { 438 cam_periph_unlock(periph); 439 return (ENXIO); 440 } 441 if (SA_IS_CTRL(dev)) { 442 softc->ctrl_mode = 1; 443 cam_periph_unlock(periph); 444 return (0); 445 } 446 447 448 if (softc->flags & SA_FLAG_OPEN) { 449 error = EBUSY; 450 } else if (softc->flags & SA_FLAG_INVALID) { 451 error = ENXIO; 452 } else { 453 /* 454 * The function samount ensures media is loaded and ready. 455 * It also does a device RESERVE if the tape isn't yet mounted. 456 */ 457 error = samount(periph, flags, dev); 458 } 459 460 if (error) { 461 cam_periph_release(periph); 462 } else { 463 saprevent(periph, PR_PREVENT); 464 softc->flags |= SA_FLAG_OPEN; 465 } 466 cam_periph_unlock(periph); 467 return (error); 468 } 469 470 static int 471 saclose(dev_t dev, int flag, int fmt, struct proc *p) 472 { 473 struct cam_periph *periph; 474 struct sa_softc *softc; 475 int unit, mode, error, writing, tmp; 476 int closedbits = SA_FLAG_OPEN; 477 478 unit = SAUNIT(dev); 479 mode = SAMODE(dev); 480 periph = cam_extend_get(saperiphs, unit); 481 if (periph == NULL) 482 return (ENXIO); 483 484 softc = (struct sa_softc *)periph->softc; 485 486 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE|CAM_DEBUG_INFO, 487 ("saclose(%d): dev=0x%x softc=0x%x\n", unit, unit, softc->flags)); 488 489 490 if ((error = cam_periph_lock(periph, PRIBIO)) != 0) { 491 return (error); 492 } 493 494 if (SA_IS_CTRL(dev)) { 495 softc->ctrl_mode = 0; 496 cam_periph_release(periph); 497 cam_periph_unlock(periph); 498 return (0); 499 } 500 501 /* 502 * Were we writing the tape? 503 */ 504 writing = (softc->flags & SA_FLAG_TAPE_WRITTEN) != 0; 505 506 /* 507 * See whether or not we need to write filemarks. If this 508 * fails, we probably have to assume we've lost tape 509 * position. 510 */ 511 error = sacheckeod(periph); 512 if (error) { 513 xpt_print_path(periph->path); 514 printf("failed to write terminating filemark(s)\n"); 515 softc->flags |= SA_FLAG_TAPE_FROZEN; 516 } 517 518 /* 519 * Whatever we end up doing, allow users to eject tapes from here on. 520 */ 521 saprevent(periph, PR_ALLOW); 522 523 /* 524 * Decide how to end... 525 */ 526 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) { 527 closedbits |= SA_FLAG_TAPE_FROZEN; 528 } else switch (mode) { 529 case SA_MODE_OFFLINE: 530 /* 531 * An 'offline' close is an unconditional release of 532 * frozen && mount conditions, irrespective of whether 533 * these operations succeeded. The reason for this is 534 * to allow at least some kind of programmatic way 535 * around our state getting all fouled up. If somebody 536 * issues an 'offline' command, that will be allowed 537 * to clear state. 538 */ 539 (void) sarewind(periph); 540 (void) saloadunload(periph, FALSE); 541 closedbits |= SA_FLAG_TAPE_MOUNTED|SA_FLAG_TAPE_FROZEN; 542 break; 543 case SA_MODE_REWIND: 544 /* 545 * If the rewind fails, return an error- if anyone cares, 546 * but not overwriting any previous error. 547 * 548 * We don't clear the notion of mounted here, but we do 549 * clear the notion of frozen if we successfully rewound. 550 */ 551 tmp = sarewind(periph); 552 if (tmp) { 553 if (error != 0) 554 error = tmp; 555 } else { 556 closedbits |= SA_FLAG_TAPE_FROZEN; 557 } 558 break; 559 case SA_MODE_NOREWIND: 560 /* 561 * If we're not rewinding/unloading the tape, find out 562 * whether we need to back up over one of two filemarks 563 * we wrote (if we wrote two filemarks) so that appends 564 * from this point on will be sane. 565 */ 566 if (error == 0 && writing && (softc->quirks & SA_QUIRK_2FM)) { 567 tmp = saspace(periph, -1, SS_FILEMARKS); 568 if (tmp) { 569 xpt_print_path(periph->path); 570 printf("unable to backspace over one of double" 571 " filemarks at end of tape\n"); 572 xpt_print_path(periph->path); 573 printf("it is possible that this device" 574 " needs a SA_QUIRK_1FM quirk set for it\n"); 575 softc->flags |= SA_FLAG_TAPE_FROZEN; 576 } 577 } 578 break; 579 default: 580 xpt_print_path(periph->path); 581 panic("unknown mode 0x%x in saclose\n", mode); 582 /* NOTREACHED */ 583 break; 584 } 585 586 /* 587 * We wish to note here that there are no more filemarks to be written. 588 */ 589 softc->filemarks = 0; 590 softc->flags &= ~SA_FLAG_TAPE_WRITTEN; 591 592 /* 593 * And we are no longer open for business. 594 */ 595 softc->flags &= ~closedbits; 596 597 /* 598 * Inform users if tape state if frozen.... 599 */ 600 if (softc->flags & SA_FLAG_TAPE_FROZEN) { 601 xpt_print_path(periph->path); 602 printf("tape is now frozen- use an OFFLINE, REWIND or MTEOM " 603 "command to clear this state.\n"); 604 } 605 606 /* release the device if it is no longer mounted */ 607 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) 608 sareservereleaseunit(periph, FALSE); 609 610 cam_periph_unlock(periph); 611 cam_periph_release(periph); 612 613 return (error); 614 } 615 616 /* 617 * Actually translate the requested transfer into one the physical driver 618 * can understand. The transfer is described by a buf and will include 619 * only one physical transfer. 620 */ 621 static void 622 sastrategy(struct bio *bp) 623 { 624 struct cam_periph *periph; 625 struct sa_softc *softc; 626 u_int unit; 627 int s; 628 629 if (SA_IS_CTRL(bp->bio_dev)) { 630 bp->bio_error = EINVAL; 631 goto bad; 632 } 633 unit = SAUNIT(bp->bio_dev); 634 periph = cam_extend_get(saperiphs, unit); 635 if (periph == NULL) { 636 bp->bio_error = ENXIO; 637 goto bad; 638 } 639 softc = (struct sa_softc *)periph->softc; 640 641 s = splsoftcam(); 642 643 if (softc->flags & SA_FLAG_INVALID) { 644 splx(s); 645 bp->bio_error = ENXIO; 646 goto bad; 647 } 648 649 if (softc->flags & SA_FLAG_TAPE_FROZEN) { 650 splx(s); 651 bp->bio_error = EPERM; 652 goto bad; 653 } 654 655 splx(s); 656 657 /* 658 * If it's a null transfer, return immediatly 659 */ 660 if (bp->bio_bcount == 0) 661 goto done; 662 663 /* valid request? */ 664 if (softc->flags & SA_FLAG_FIXED) { 665 /* 666 * Fixed block device. The byte count must 667 * be a multiple of our block size. 668 */ 669 if (((softc->blk_mask != ~0) && 670 ((bp->bio_bcount & softc->blk_mask) != 0)) || 671 ((softc->blk_mask == ~0) && 672 ((bp->bio_bcount % softc->min_blk) != 0))) { 673 xpt_print_path(periph->path); 674 printf("Invalid request. Fixed block device " 675 "requests must be a multiple " 676 "of %d bytes\n", softc->min_blk); 677 bp->bio_error = EINVAL; 678 goto bad; 679 } 680 } else if ((bp->bio_bcount > softc->max_blk) || 681 (bp->bio_bcount < softc->min_blk) || 682 (bp->bio_bcount & softc->blk_mask) != 0) { 683 684 xpt_print_path(periph->path); 685 printf("Invalid request. Variable block device " 686 "requests must be "); 687 if (softc->blk_mask != 0) { 688 printf("a multiple of %d ", (0x1 << softc->blk_gran)); 689 } 690 printf("between %d and %d bytes\n", softc->min_blk, 691 softc->max_blk); 692 bp->bio_error = EINVAL; 693 goto bad; 694 } 695 696 /* 697 * Mask interrupts so that the device cannot be invalidated until 698 * after we are in the queue. Otherwise, we might not properly 699 * clean up one of the buffers. 700 */ 701 s = splbio(); 702 703 /* 704 * Place it at the end of the queue. 705 */ 706 bioq_insert_tail(&softc->bio_queue, bp); 707 708 softc->queue_count++; 709 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("sastrategy: enqueuing a %d " 710 "%s byte %s queue count now %d\n", (int) bp->bio_bcount, 711 (softc->flags & SA_FLAG_FIXED)? "fixed" : "variable", 712 (bp->bio_cmd == BIO_READ)? "read" : "write", softc->queue_count)); 713 714 splx(s); 715 716 /* 717 * Schedule ourselves for performing the work. 718 */ 719 xpt_schedule(periph, 1); 720 721 return; 722 bad: 723 bp->bio_flags |= BIO_ERROR; 724 done: 725 726 /* 727 * Correctly set the buf to indicate a completed xfer 728 */ 729 bp->bio_resid = bp->bio_bcount; 730 biodone(bp); 731 } 732 733 static int 734 saioctl(dev_t dev, u_long cmd, caddr_t arg, int flag, struct proc *p) 735 { 736 struct cam_periph *periph; 737 struct sa_softc *softc; 738 scsi_space_code spaceop; 739 int didlockperiph = 0; 740 int s; 741 int unit; 742 int mode; 743 int density; 744 int error = 0; 745 746 unit = SAUNIT(dev); 747 mode = SAMODE(dev); 748 density = SADENSITY(dev); 749 error = 0; /* shut up gcc */ 750 spaceop = 0; /* shut up gcc */ 751 752 periph = cam_extend_get(saperiphs, unit); 753 if (periph == NULL) 754 return (ENXIO); 755 756 softc = (struct sa_softc *)periph->softc; 757 758 /* 759 * Check for control mode accesses. We allow MTIOCGET and 760 * MTIOCERRSTAT (but need to be the only one open in order 761 * to clear latched status), and MTSETBSIZE, MTSETDNSTY 762 * and MTCOMP (but need to be the only one accessing this 763 * device to run those). 764 */ 765 766 if (SA_IS_CTRL(dev)) { 767 switch (cmd) { 768 case MTIOCGETEOTMODEL: 769 case MTIOCGET: 770 break; 771 case MTIOCERRSTAT: 772 /* 773 * If the periph isn't already locked, lock it 774 * so our MTIOCERRSTAT can reset latched error stats. 775 * 776 * If the periph is already locked, skip it because 777 * we're just getting status and it'll be up to the 778 * other thread that has this device open to do 779 * an MTIOCERRSTAT that would clear latched status. 780 */ 781 s = splsoftcam(); 782 if ((periph->flags & CAM_PERIPH_LOCKED) == 0) { 783 error = cam_periph_lock(periph, PRIBIO|PCATCH); 784 if (error != 0) { 785 splx(s); 786 return (error); 787 } 788 didlockperiph = 1; 789 } 790 break; 791 792 case MTIOCSETEOTMODEL: 793 case MTSETBSIZ: 794 case MTSETDNSTY: 795 case MTCOMP: 796 /* 797 * We need to acquire the peripheral here rather 798 * than at open time because we are sharing writable 799 * access to data structures. 800 */ 801 s = splsoftcam(); 802 error = cam_periph_lock(periph, PRIBIO|PCATCH); 803 if (error != 0) { 804 splx(s); 805 return (error); 806 } 807 didlockperiph = 1; 808 break; 809 810 default: 811 return (EINVAL); 812 } 813 } 814 815 /* 816 * Find the device that the user is talking about 817 */ 818 switch (cmd) { 819 case MTIOCGET: 820 { 821 struct mtget *g = (struct mtget *)arg; 822 823 /* 824 * If this isn't the control mode device, actually go out 825 * and ask the drive again what it's set to. 826 */ 827 if (!SA_IS_CTRL(dev)) { 828 u_int8_t write_protect; 829 int comp_enabled, comp_supported; 830 error = sagetparams(periph, SA_PARAM_ALL, 831 &softc->media_blksize, &softc->media_density, 832 &softc->media_numblks, &softc->buffer_mode, 833 &write_protect, &softc->speed, &comp_supported, 834 &comp_enabled, &softc->comp_algorithm, NULL); 835 if (error) 836 break; 837 if (write_protect) 838 softc->flags |= SA_FLAG_TAPE_WP; 839 else 840 softc->flags &= ~SA_FLAG_TAPE_WP; 841 softc->flags &= ~(SA_FLAG_COMP_SUPP| 842 SA_FLAG_COMP_ENABLED|SA_FLAG_COMP_UNSUPP); 843 if (comp_supported) { 844 if (softc->saved_comp_algorithm == 0) 845 softc->saved_comp_algorithm = 846 softc->comp_algorithm; 847 softc->flags |= SA_FLAG_COMP_SUPP; 848 if (comp_enabled) 849 softc->flags |= SA_FLAG_COMP_ENABLED; 850 } else 851 softc->flags |= SA_FLAG_COMP_UNSUPP; 852 } 853 bzero(g, sizeof(struct mtget)); 854 g->mt_type = MT_ISAR; 855 if (softc->flags & SA_FLAG_COMP_UNSUPP) { 856 g->mt_comp = MT_COMP_UNSUPP; 857 g->mt_comp0 = MT_COMP_UNSUPP; 858 g->mt_comp1 = MT_COMP_UNSUPP; 859 g->mt_comp2 = MT_COMP_UNSUPP; 860 g->mt_comp3 = MT_COMP_UNSUPP; 861 } else { 862 if ((softc->flags & SA_FLAG_COMP_ENABLED) == 0) { 863 g->mt_comp = MT_COMP_DISABLED; 864 } else { 865 g->mt_comp = softc->comp_algorithm; 866 } 867 g->mt_comp0 = softc->comp_algorithm; 868 g->mt_comp1 = softc->comp_algorithm; 869 g->mt_comp2 = softc->comp_algorithm; 870 g->mt_comp3 = softc->comp_algorithm; 871 } 872 g->mt_density = softc->media_density; 873 g->mt_density0 = softc->media_density; 874 g->mt_density1 = softc->media_density; 875 g->mt_density2 = softc->media_density; 876 g->mt_density3 = softc->media_density; 877 g->mt_blksiz = softc->media_blksize; 878 g->mt_blksiz0 = softc->media_blksize; 879 g->mt_blksiz1 = softc->media_blksize; 880 g->mt_blksiz2 = softc->media_blksize; 881 g->mt_blksiz3 = softc->media_blksize; 882 g->mt_fileno = softc->fileno; 883 g->mt_blkno = softc->blkno; 884 g->mt_dsreg = (short) softc->dsreg; 885 error = 0; 886 break; 887 } 888 case MTIOCERRSTAT: 889 { 890 struct scsi_tape_errors *sep = 891 &((union mterrstat *)arg)->scsi_errstat; 892 893 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, 894 ("saioctl: MTIOCERRSTAT\n")); 895 896 bzero(sep, sizeof(*sep)); 897 sep->io_resid = softc->last_io_resid; 898 bcopy((caddr_t) &softc->last_io_sense, sep->io_sense, 899 sizeof (sep->io_sense)); 900 bcopy((caddr_t) &softc->last_io_cdb, sep->io_cdb, 901 sizeof (sep->io_cdb)); 902 sep->ctl_resid = softc->last_ctl_resid; 903 bcopy((caddr_t) &softc->last_ctl_sense, sep->ctl_sense, 904 sizeof (sep->ctl_sense)); 905 bcopy((caddr_t) &softc->last_ctl_cdb, sep->ctl_cdb, 906 sizeof (sep->ctl_cdb)); 907 908 if (SA_IS_CTRL(dev) == 0 || didlockperiph) 909 bzero((caddr_t) &softc->errinfo, 910 sizeof (softc->errinfo)); 911 error = 0; 912 break; 913 } 914 case MTIOCTOP: 915 { 916 struct mtop *mt; 917 int count; 918 919 mt = (struct mtop *)arg; 920 921 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, 922 ("saioctl: op=0x%x count=0x%x\n", 923 mt->mt_op, mt->mt_count)); 924 925 count = mt->mt_count; 926 switch (mt->mt_op) { 927 case MTWEOF: /* write an end-of-file marker */ 928 /* XXXX: NEED TO CLEAR SA_TAPE_WRITTEN */ 929 error = sawritefilemarks(periph, count, FALSE); 930 break; 931 case MTWSS: /* write a setmark */ 932 error = sawritefilemarks(periph, count, TRUE); 933 break; 934 case MTBSR: /* backward space record */ 935 case MTFSR: /* forward space record */ 936 case MTBSF: /* backward space file */ 937 case MTFSF: /* forward space file */ 938 case MTBSS: /* backward space setmark */ 939 case MTFSS: /* forward space setmark */ 940 case MTEOD: /* space to end of recorded medium */ 941 { 942 int nmarks; 943 944 spaceop = SS_FILEMARKS; 945 nmarks = softc->filemarks; 946 error = sacheckeod(periph); 947 if (error) { 948 xpt_print_path(periph->path); 949 printf("EOD check prior to spacing failed\n"); 950 softc->flags |= SA_FLAG_EIO_PENDING; 951 break; 952 } 953 nmarks -= softc->filemarks; 954 switch(mt->mt_op) { 955 case MTBSR: 956 count = -count; 957 /* FALLTHROUGH */ 958 case MTFSR: 959 spaceop = SS_BLOCKS; 960 break; 961 case MTBSF: 962 count = -count; 963 /* FALLTHROUGH */ 964 case MTFSF: 965 break; 966 case MTBSS: 967 count = -count; 968 /* FALLTHROUGH */ 969 case MTFSS: 970 spaceop = SS_SETMARKS; 971 break; 972 case MTEOD: 973 spaceop = SS_EOD; 974 count = 0; 975 nmarks = 0; 976 break; 977 default: 978 error = EINVAL; 979 break; 980 } 981 if (error) 982 break; 983 984 nmarks = softc->filemarks; 985 /* 986 * XXX: Why are we checking again? 987 */ 988 error = sacheckeod(periph); 989 if (error) 990 break; 991 nmarks -= softc->filemarks; 992 error = saspace(periph, count - nmarks, spaceop); 993 /* 994 * At this point, clear that we've written the tape 995 * and that we've written any filemarks. We really 996 * don't know what the applications wishes to do next- 997 * the sacheckeod's will make sure we terminated the 998 * tape correctly if we'd been writing, but the next 999 * action the user application takes will set again 1000 * whether we need to write filemarks. 1001 */ 1002 softc->flags &= 1003 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1004 softc->filemarks = 0; 1005 break; 1006 } 1007 case MTREW: /* rewind */ 1008 (void) sacheckeod(periph); 1009 error = sarewind(periph); 1010 /* see above */ 1011 softc->flags &= 1012 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1013 softc->filemarks = 0; 1014 break; 1015 case MTERASE: /* erase */ 1016 error = saerase(periph, count); 1017 softc->flags &= 1018 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1019 break; 1020 case MTRETENS: /* re-tension tape */ 1021 error = saretension(periph); 1022 softc->flags &= 1023 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1024 break; 1025 case MTOFFL: /* rewind and put the drive offline */ 1026 1027 (void) sacheckeod(periph); 1028 /* see above */ 1029 softc->flags &= ~SA_FLAG_TAPE_WRITTEN; 1030 softc->filemarks = 0; 1031 1032 error = sarewind(periph); 1033 /* clear the frozen flag anyway */ 1034 softc->flags &= ~SA_FLAG_TAPE_FROZEN; 1035 1036 /* 1037 * Be sure to allow media removal before ejecting. 1038 */ 1039 1040 saprevent(periph, PR_ALLOW); 1041 if (error == 0) { 1042 error = saloadunload(periph, FALSE); 1043 if (error == 0) { 1044 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 1045 } 1046 } 1047 break; 1048 1049 case MTNOP: /* no operation, sets status only */ 1050 case MTCACHE: /* enable controller cache */ 1051 case MTNOCACHE: /* disable controller cache */ 1052 error = 0; 1053 break; 1054 1055 case MTSETBSIZ: /* Set block size for device */ 1056 1057 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, count, 1058 0, 0, 0); 1059 if (error == 0) { 1060 softc->last_media_blksize = 1061 softc->media_blksize; 1062 softc->media_blksize = count; 1063 if (count) { 1064 softc->flags |= SA_FLAG_FIXED; 1065 if (powerof2(count)) { 1066 softc->blk_shift = 1067 ffs(count) - 1; 1068 softc->blk_mask = count - 1; 1069 } else { 1070 softc->blk_mask = ~0; 1071 softc->blk_shift = 0; 1072 } 1073 /* 1074 * Make the user's desire 'persistent'. 1075 */ 1076 softc->quirks &= ~SA_QUIRK_VARIABLE; 1077 softc->quirks |= SA_QUIRK_FIXED; 1078 } else { 1079 softc->flags &= ~SA_FLAG_FIXED; 1080 if (softc->max_blk == 0) { 1081 softc->max_blk = ~0; 1082 } 1083 softc->blk_shift = 0; 1084 if (softc->blk_gran != 0) { 1085 softc->blk_mask = 1086 softc->blk_gran - 1; 1087 } else { 1088 softc->blk_mask = 0; 1089 } 1090 /* 1091 * Make the user's desire 'persistent'. 1092 */ 1093 softc->quirks |= SA_QUIRK_VARIABLE; 1094 softc->quirks &= ~SA_QUIRK_FIXED; 1095 } 1096 } 1097 break; 1098 case MTSETDNSTY: /* Set density for device and mode */ 1099 if (count > UCHAR_MAX) { 1100 error = EINVAL; 1101 break; 1102 } else { 1103 error = sasetparams(periph, SA_PARAM_DENSITY, 1104 0, count, 0, 0); 1105 } 1106 break; 1107 case MTCOMP: /* enable compression */ 1108 /* 1109 * Some devices don't support compression, and 1110 * don't like it if you ask them for the 1111 * compression page. 1112 */ 1113 if ((softc->quirks & SA_QUIRK_NOCOMP) || 1114 (softc->flags & SA_FLAG_COMP_UNSUPP)) { 1115 error = ENODEV; 1116 break; 1117 } 1118 error = sasetparams(periph, SA_PARAM_COMPRESSION, 1119 0, 0, count, SF_NO_PRINT); 1120 break; 1121 default: 1122 error = EINVAL; 1123 } 1124 break; 1125 } 1126 case MTIOCIEOT: 1127 case MTIOCEEOT: 1128 error = 0; 1129 break; 1130 case MTIOCRDSPOS: 1131 error = sardpos(periph, 0, (u_int32_t *) arg); 1132 break; 1133 case MTIOCRDHPOS: 1134 error = sardpos(periph, 1, (u_int32_t *) arg); 1135 break; 1136 case MTIOCSLOCATE: 1137 error = sasetpos(periph, 0, (u_int32_t *) arg); 1138 break; 1139 case MTIOCHLOCATE: 1140 error = sasetpos(periph, 1, (u_int32_t *) arg); 1141 break; 1142 case MTIOCGETEOTMODEL: 1143 error = 0; 1144 if (softc->quirks & SA_QUIRK_1FM) 1145 mode = 1; 1146 else 1147 mode = 2; 1148 *((u_int32_t *) arg) = mode; 1149 break; 1150 case MTIOCSETEOTMODEL: 1151 error = 0; 1152 switch (*((u_int32_t *) arg)) { 1153 case 1: 1154 softc->quirks &= ~SA_QUIRK_2FM; 1155 softc->quirks |= SA_QUIRK_1FM; 1156 break; 1157 case 2: 1158 softc->quirks &= ~SA_QUIRK_1FM; 1159 softc->quirks |= SA_QUIRK_2FM; 1160 break; 1161 default: 1162 error = EINVAL; 1163 break; 1164 } 1165 break; 1166 default: 1167 error = cam_periph_ioctl(periph, cmd, arg, saerror); 1168 break; 1169 } 1170 if (didlockperiph) { 1171 cam_periph_unlock(periph); 1172 } 1173 return (error); 1174 } 1175 1176 static void 1177 sainit(void) 1178 { 1179 cam_status status; 1180 struct cam_path *path; 1181 1182 /* 1183 * Create our extend array for storing the devices we attach to. 1184 */ 1185 saperiphs = cam_extend_new(); 1186 if (saperiphs == NULL) { 1187 printf("sa: Failed to alloc extend array!\n"); 1188 return; 1189 } 1190 1191 /* 1192 * Install a global async callback. 1193 */ 1194 status = xpt_create_path(&path, NULL, CAM_XPT_PATH_ID, 1195 CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD); 1196 1197 if (status == CAM_REQ_CMP) { 1198 /* Register the async callbacks of interrest */ 1199 struct ccb_setasync csa; /* 1200 * This is an immediate CCB, 1201 * so using the stack is OK 1202 */ 1203 xpt_setup_ccb(&csa.ccb_h, path, 5); 1204 csa.ccb_h.func_code = XPT_SASYNC_CB; 1205 csa.event_enable = AC_FOUND_DEVICE; 1206 csa.callback = saasync; 1207 csa.callback_arg = NULL; 1208 xpt_action((union ccb *)&csa); 1209 status = csa.ccb_h.status; 1210 xpt_free_path(path); 1211 } 1212 1213 if (status != CAM_REQ_CMP) { 1214 printf("sa: Failed to attach master async callback " 1215 "due to status 0x%x!\n", status); 1216 } 1217 } 1218 1219 static void 1220 saoninvalidate(struct cam_periph *periph) 1221 { 1222 struct sa_softc *softc; 1223 struct bio *q_bp; 1224 struct ccb_setasync csa; 1225 int s; 1226 1227 softc = (struct sa_softc *)periph->softc; 1228 1229 /* 1230 * De-register any async callbacks. 1231 */ 1232 xpt_setup_ccb(&csa.ccb_h, periph->path, 1233 /* priority */ 5); 1234 csa.ccb_h.func_code = XPT_SASYNC_CB; 1235 csa.event_enable = 0; 1236 csa.callback = saasync; 1237 csa.callback_arg = periph; 1238 xpt_action((union ccb *)&csa); 1239 1240 softc->flags |= SA_FLAG_INVALID; 1241 1242 /* 1243 * Although the oninvalidate() routines are always called at 1244 * splsoftcam, we need to be at splbio() here to keep the buffer 1245 * queue from being modified while we traverse it. 1246 */ 1247 s = splbio(); 1248 1249 /* 1250 * Return all queued I/O with ENXIO. 1251 * XXX Handle any transactions queued to the card 1252 * with XPT_ABORT_CCB. 1253 */ 1254 while ((q_bp = bioq_first(&softc->bio_queue)) != NULL){ 1255 bioq_remove(&softc->bio_queue, q_bp); 1256 q_bp->bio_resid = q_bp->bio_bcount; 1257 q_bp->bio_error = ENXIO; 1258 q_bp->bio_flags |= BIO_ERROR; 1259 biodone(q_bp); 1260 } 1261 softc->queue_count = 0; 1262 splx(s); 1263 1264 xpt_print_path(periph->path); 1265 printf("lost device\n"); 1266 1267 } 1268 1269 static void 1270 sacleanup(struct cam_periph *periph) 1271 { 1272 struct sa_softc *softc; 1273 int i; 1274 1275 softc = (struct sa_softc *)periph->softc; 1276 1277 devstat_remove_entry(&softc->device_stats); 1278 1279 destroy_dev(softc->devs.ctl_dev); 1280 destroy_dev(softc->devs.r_dev); 1281 destroy_dev(softc->devs.nr_dev); 1282 destroy_dev(softc->devs.er_dev); 1283 1284 for (i = 0; i < SA_NUM_MODES; i++) { 1285 destroy_dev(softc->devs.mode_devs[i].r_dev); 1286 destroy_dev(softc->devs.mode_devs[i].nr_dev); 1287 destroy_dev(softc->devs.mode_devs[i].er_dev); 1288 } 1289 1290 cam_extend_release(saperiphs, periph->unit_number); 1291 xpt_print_path(periph->path); 1292 printf("removing device entry\n"); 1293 free(softc, M_DEVBUF); 1294 } 1295 1296 static void 1297 saasync(void *callback_arg, u_int32_t code, 1298 struct cam_path *path, void *arg) 1299 { 1300 struct cam_periph *periph; 1301 1302 periph = (struct cam_periph *)callback_arg; 1303 switch (code) { 1304 case AC_FOUND_DEVICE: 1305 { 1306 struct ccb_getdev *cgd; 1307 cam_status status; 1308 1309 cgd = (struct ccb_getdev *)arg; 1310 1311 if (SID_TYPE(&cgd->inq_data) != T_SEQUENTIAL) 1312 break; 1313 1314 /* 1315 * Allocate a peripheral instance for 1316 * this device and start the probe 1317 * process. 1318 */ 1319 status = cam_periph_alloc(saregister, saoninvalidate, 1320 sacleanup, sastart, 1321 "sa", CAM_PERIPH_BIO, cgd->ccb_h.path, 1322 saasync, AC_FOUND_DEVICE, cgd); 1323 1324 if (status != CAM_REQ_CMP 1325 && status != CAM_REQ_INPROG) 1326 printf("saasync: Unable to probe new device " 1327 "due to status 0x%x\n", status); 1328 break; 1329 } 1330 default: 1331 cam_periph_async(periph, code, path, arg); 1332 break; 1333 } 1334 } 1335 1336 static cam_status 1337 saregister(struct cam_periph *periph, void *arg) 1338 { 1339 struct sa_softc *softc; 1340 struct ccb_setasync csa; 1341 struct ccb_getdev *cgd; 1342 caddr_t match; 1343 int i; 1344 1345 cgd = (struct ccb_getdev *)arg; 1346 if (periph == NULL) { 1347 printf("saregister: periph was NULL!!\n"); 1348 return (CAM_REQ_CMP_ERR); 1349 } 1350 1351 if (cgd == NULL) { 1352 printf("saregister: no getdev CCB, can't register device\n"); 1353 return (CAM_REQ_CMP_ERR); 1354 } 1355 1356 softc = (struct sa_softc *)malloc(sizeof (*softc), M_DEVBUF, M_NOWAIT); 1357 if (softc == NULL) { 1358 printf("saregister: Unable to probe new device. " 1359 "Unable to allocate softc\n"); 1360 return (CAM_REQ_CMP_ERR); 1361 } 1362 1363 bzero(softc, sizeof(*softc)); 1364 softc->scsi_rev = SID_ANSI_REV(&cgd->inq_data); 1365 softc->state = SA_STATE_NORMAL; 1366 softc->fileno = (daddr_t) -1; 1367 softc->blkno = (daddr_t) -1; 1368 1369 bioq_init(&softc->bio_queue); 1370 periph->softc = softc; 1371 cam_extend_set(saperiphs, periph->unit_number, periph); 1372 1373 /* 1374 * See if this device has any quirks. 1375 */ 1376 match = cam_quirkmatch((caddr_t)&cgd->inq_data, 1377 (caddr_t)sa_quirk_table, 1378 sizeof(sa_quirk_table)/sizeof(*sa_quirk_table), 1379 sizeof(*sa_quirk_table), scsi_inquiry_match); 1380 1381 if (match != NULL) { 1382 softc->quirks = ((struct sa_quirk_entry *)match)->quirks; 1383 softc->last_media_blksize = 1384 ((struct sa_quirk_entry *)match)->prefblk; 1385 #ifdef CAMDEBUG 1386 xpt_print_path(periph->path); 1387 printf("found quirk entry %d\n", (int) 1388 (((struct sa_quirk_entry *) match) - sa_quirk_table)); 1389 #endif 1390 } else 1391 softc->quirks = SA_QUIRK_NONE; 1392 1393 /* 1394 * The SA driver supports a blocksize, but we don't know the 1395 * blocksize until we media is inserted. So, set a flag to 1396 * indicate that the blocksize is unavailable right now. 1397 */ 1398 devstat_add_entry(&softc->device_stats, "sa", periph->unit_number, 0, 1399 DEVSTAT_BS_UNAVAILABLE, SID_TYPE(&cgd->inq_data) | 1400 DEVSTAT_TYPE_IF_SCSI, DEVSTAT_PRIORITY_TAPE); 1401 1402 softc->devs.ctl_dev = make_dev(&sa_cdevsw, SAMINOR(SA_CTLDEV, 1403 periph->unit_number, 0, SA_ATYPE_R), UID_ROOT, GID_OPERATOR, 1404 0660, "r%s%d.ctl", periph->periph_name, periph->unit_number); 1405 1406 softc->devs.r_dev = make_dev(&sa_cdevsw, SAMINOR(SA_NOT_CTLDEV, 1407 periph->unit_number, 0, SA_ATYPE_R), UID_ROOT, GID_OPERATOR, 1408 0660, "r%s%d", periph->periph_name, periph->unit_number); 1409 1410 softc->devs.nr_dev = make_dev(&sa_cdevsw, SAMINOR(SA_NOT_CTLDEV, 1411 periph->unit_number, 0, SA_ATYPE_NR), UID_ROOT, GID_OPERATOR, 1412 0660, "nr%s%d", periph->periph_name, periph->unit_number); 1413 1414 softc->devs.er_dev = make_dev(&sa_cdevsw, SAMINOR(SA_NOT_CTLDEV, 1415 periph->unit_number, 0, SA_ATYPE_ER), UID_ROOT, GID_OPERATOR, 1416 0660, "er%s%d", periph->periph_name, periph->unit_number); 1417 1418 for (i = 0; i < SA_NUM_MODES; i++) { 1419 1420 softc->devs.mode_devs[i].r_dev = make_dev(&sa_cdevsw, 1421 SAMINOR(SA_NOT_CTLDEV, periph->unit_number, i, SA_ATYPE_R), 1422 UID_ROOT, GID_OPERATOR, 0660, "r%s%d.%d", 1423 periph->periph_name, periph->unit_number, i); 1424 1425 softc->devs.mode_devs[i].nr_dev = make_dev(&sa_cdevsw, 1426 SAMINOR(SA_NOT_CTLDEV, periph->unit_number, i, SA_ATYPE_NR), 1427 UID_ROOT, GID_OPERATOR, 0660, "nr%s%d.%d", 1428 periph->periph_name, periph->unit_number, i); 1429 1430 1431 softc->devs.mode_devs[i].er_dev = make_dev(&sa_cdevsw, 1432 SAMINOR(SA_NOT_CTLDEV, periph->unit_number, i, SA_ATYPE_ER), 1433 UID_ROOT, GID_OPERATOR, 0660, "er%s%d.%d", 1434 periph->periph_name, periph->unit_number, i); 1435 } 1436 1437 /* 1438 * Add an async callback so that we get 1439 * notified if this device goes away. 1440 */ 1441 xpt_setup_ccb(&csa.ccb_h, periph->path, /* priority */ 5); 1442 csa.ccb_h.func_code = XPT_SASYNC_CB; 1443 csa.event_enable = AC_LOST_DEVICE; 1444 csa.callback = saasync; 1445 csa.callback_arg = periph; 1446 xpt_action((union ccb *)&csa); 1447 1448 xpt_announce_periph(periph, NULL); 1449 1450 return (CAM_REQ_CMP); 1451 } 1452 1453 static void 1454 sastart(struct cam_periph *periph, union ccb *start_ccb) 1455 { 1456 struct sa_softc *softc; 1457 1458 softc = (struct sa_softc *)periph->softc; 1459 1460 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("sastart")); 1461 1462 switch (softc->state) { 1463 case SA_STATE_NORMAL: 1464 { 1465 /* Pull a buffer from the queue and get going on it */ 1466 struct bio *bp; 1467 int s; 1468 1469 /* 1470 * See if there is a buf with work for us to do.. 1471 */ 1472 s = splbio(); 1473 bp = bioq_first(&softc->bio_queue); 1474 if (periph->immediate_priority <= periph->pinfo.priority) { 1475 CAM_DEBUG_PRINT(CAM_DEBUG_SUBTRACE, 1476 ("queuing for immediate ccb\n")); 1477 start_ccb->ccb_h.ccb_type = SA_CCB_WAITING; 1478 SLIST_INSERT_HEAD(&periph->ccb_list, &start_ccb->ccb_h, 1479 periph_links.sle); 1480 periph->immediate_priority = CAM_PRIORITY_NONE; 1481 splx(s); 1482 wakeup(&periph->ccb_list); 1483 } else if (bp == NULL) { 1484 splx(s); 1485 xpt_release_ccb(start_ccb); 1486 } else if ((softc->flags & SA_FLAG_ERR_PENDING) != 0) { 1487 struct bio *done_bp; 1488 softc->queue_count--; 1489 bioq_remove(&softc->bio_queue, bp); 1490 bp->bio_resid = bp->bio_bcount; 1491 bp->bio_flags |= BIO_ERROR; 1492 if ((softc->flags & SA_FLAG_EOM_PENDING) != 0) { 1493 if (bp->bio_cmd == BIO_WRITE) 1494 bp->bio_error = ENOSPC; 1495 else 1496 bp->bio_error = EIO; 1497 } 1498 if ((softc->flags & SA_FLAG_EOF_PENDING) != 0) { 1499 bp->bio_error = EIO; 1500 } 1501 if ((softc->flags & SA_FLAG_EIO_PENDING) != 0) { 1502 bp->bio_error = EIO; 1503 } 1504 done_bp = bp; 1505 bp = bioq_first(&softc->bio_queue); 1506 /* 1507 * Only if we have no other buffers queued up 1508 * do we clear the pending error flag. 1509 */ 1510 if (bp == NULL) 1511 softc->flags &= ~SA_FLAG_ERR_PENDING; 1512 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 1513 ("sastart- ERR_PENDING now 0x%x, bp is %sNULL, " 1514 "%d more buffers queued up\n", 1515 (softc->flags & SA_FLAG_ERR_PENDING), 1516 (bp != NULL)? "not " : " ", softc->queue_count)); 1517 splx(s); 1518 xpt_release_ccb(start_ccb); 1519 biodone(done_bp); 1520 } else { 1521 u_int32_t length; 1522 1523 bioq_remove(&softc->bio_queue, bp); 1524 softc->queue_count--; 1525 1526 if ((softc->flags & SA_FLAG_FIXED) != 0) { 1527 if (softc->blk_shift != 0) { 1528 length = 1529 bp->bio_bcount >> softc->blk_shift; 1530 } else if (softc->media_blksize != 0) { 1531 length = 1532 bp->bio_bcount / softc->media_blksize; 1533 } else { 1534 bp->bio_error = EIO; 1535 xpt_print_path(periph->path); 1536 printf("zero blocksize for " 1537 "FIXED length writes?\n"); 1538 splx(s); 1539 biodone(bp); 1540 break; 1541 } 1542 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 1543 ("Fixed Record Count is %d\n", length)); 1544 } else { 1545 length = bp->bio_bcount; 1546 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_INFO, 1547 ("Variable Record Count is %d\n", length)); 1548 } 1549 devstat_start_transaction(&softc->device_stats); 1550 /* 1551 * Some people have theorized that we should 1552 * suppress illegal length indication if we are 1553 * running in variable block mode so that we don't 1554 * have to request sense every time our requested 1555 * block size is larger than the written block. 1556 * The residual information from the ccb allows 1557 * us to identify this situation anyway. The only 1558 * problem with this is that we will not get 1559 * information about blocks that are larger than 1560 * our read buffer unless we set the block size 1561 * in the mode page to something other than 0. 1562 * 1563 * I believe that this is a non-issue. If user apps 1564 * don't adjust their read size to match our record 1565 * size, that's just life. Anyway, the typical usage 1566 * would be to issue, e.g., 64KB reads and occasionally 1567 * have to do deal with 512 byte or 1KB intermediate 1568 * records. 1569 */ 1570 softc->dsreg = (bp->bio_cmd == BIO_READ)? 1571 MTIO_DSREG_RD : MTIO_DSREG_WR; 1572 scsi_sa_read_write(&start_ccb->csio, 0, sadone, 1573 MSG_SIMPLE_Q_TAG, (bp->bio_cmd == BIO_READ), 1574 FALSE, (softc->flags & SA_FLAG_FIXED) != 0, 1575 length, bp->bio_data, bp->bio_bcount, SSD_FULL_SIZE, 1576 120 * 60 * 1000); 1577 start_ccb->ccb_h.ccb_type = SA_CCB_BUFFER_IO; 1578 start_ccb->ccb_h.ccb_bp = bp; 1579 bp = bioq_first(&softc->bio_queue); 1580 splx(s); 1581 xpt_action(start_ccb); 1582 } 1583 1584 if (bp != NULL) { 1585 /* Have more work to do, so ensure we stay scheduled */ 1586 xpt_schedule(periph, 1); 1587 } 1588 break; 1589 } 1590 case SA_STATE_ABNORMAL: 1591 default: 1592 panic("state 0x%x in sastart", softc->state); 1593 break; 1594 } 1595 } 1596 1597 1598 static void 1599 sadone(struct cam_periph *periph, union ccb *done_ccb) 1600 { 1601 struct sa_softc *softc; 1602 struct ccb_scsiio *csio; 1603 1604 softc = (struct sa_softc *)periph->softc; 1605 csio = &done_ccb->csio; 1606 switch (csio->ccb_h.ccb_type) { 1607 case SA_CCB_BUFFER_IO: 1608 { 1609 struct bio *bp; 1610 int error; 1611 1612 softc->dsreg = MTIO_DSREG_REST; 1613 bp = (struct bio *)done_ccb->ccb_h.ccb_bp; 1614 error = 0; 1615 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 1616 if ((error = saerror(done_ccb, 0, 0)) == ERESTART) { 1617 /* 1618 * A retry was scheduled, so just return. 1619 */ 1620 return; 1621 } 1622 } 1623 1624 if (error == EIO) { 1625 int s; 1626 struct bio *q_bp; 1627 1628 /* 1629 * Catastrophic error. Mark the tape as frozen 1630 * (we no longer know tape position). 1631 * 1632 * Return all queued I/O with EIO, and unfreeze 1633 * our queue so that future transactions that 1634 * attempt to fix this problem can get to the 1635 * device. 1636 * 1637 */ 1638 1639 s = splbio(); 1640 softc->flags |= SA_FLAG_TAPE_FROZEN; 1641 while ((q_bp = bioq_first(&softc->bio_queue)) != NULL) { 1642 bioq_remove(&softc->bio_queue, q_bp); 1643 q_bp->bio_resid = q_bp->bio_bcount; 1644 q_bp->bio_error = EIO; 1645 q_bp->bio_flags |= BIO_ERROR; 1646 biodone(q_bp); 1647 } 1648 splx(s); 1649 } 1650 if (error != 0) { 1651 bp->bio_resid = bp->bio_bcount; 1652 bp->bio_error = error; 1653 bp->bio_flags |= BIO_ERROR; 1654 /* 1655 * In the error case, position is updated in saerror. 1656 */ 1657 } else { 1658 bp->bio_resid = csio->resid; 1659 bp->bio_error = 0; 1660 if (csio->resid != 0) { 1661 bp->bio_flags |= BIO_ERROR; 1662 } 1663 if (bp->bio_cmd == BIO_WRITE) { 1664 softc->flags |= SA_FLAG_TAPE_WRITTEN; 1665 softc->filemarks = 0; 1666 } 1667 if (softc->blkno != (daddr_t) -1) { 1668 if ((softc->flags & SA_FLAG_FIXED) != 0) { 1669 u_int32_t l; 1670 if (softc->blk_shift != 0) { 1671 l = bp->bio_bcount >> 1672 softc->blk_shift; 1673 } else { 1674 l = bp->bio_bcount / 1675 softc->media_blksize; 1676 } 1677 softc->blkno += (daddr_t) l; 1678 } else { 1679 softc->blkno++; 1680 } 1681 } 1682 } 1683 /* 1684 * If we had an error (immediate or pending), 1685 * release the device queue now. 1686 */ 1687 if (error || (softc->flags & SA_FLAG_ERR_PENDING)) 1688 cam_release_devq(done_ccb->ccb_h.path, 0, 0, 0, 0); 1689 #ifdef CAMDEBUG 1690 if (error || bp->bio_resid) { 1691 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 1692 ("error %d resid %ld count %ld\n", error, 1693 bp->bio_resid, bp->bio_bcount)); 1694 } 1695 #endif 1696 devstat_end_transaction_bio(&softc->device_stats, bp); 1697 biodone(bp); 1698 break; 1699 } 1700 case SA_CCB_WAITING: 1701 { 1702 /* Caller will release the CCB */ 1703 wakeup(&done_ccb->ccb_h.cbfcnp); 1704 return; 1705 } 1706 } 1707 xpt_release_ccb(done_ccb); 1708 } 1709 1710 /* 1711 * Mount the tape (make sure it's ready for I/O). 1712 */ 1713 static int 1714 samount(struct cam_periph *periph, int oflags, dev_t dev) 1715 { 1716 struct sa_softc *softc; 1717 union ccb *ccb; 1718 int error; 1719 1720 /* 1721 * oflags can be checked for 'kind' of open (read-only check) - later 1722 * dev can be checked for a control-mode or compression open - later 1723 */ 1724 UNUSED_PARAMETER(oflags); 1725 UNUSED_PARAMETER(dev); 1726 1727 1728 softc = (struct sa_softc *)periph->softc; 1729 1730 /* 1731 * This should determine if something has happend since the last 1732 * open/mount that would invalidate the mount. We do *not* want 1733 * to retry this command- we just want the status. But we only 1734 * do this if we're mounted already- if we're not mounted, 1735 * we don't care about the unit read state and can instead use 1736 * this opportunity to attempt to reserve the tape unit. 1737 */ 1738 1739 if (softc->flags & SA_FLAG_TAPE_MOUNTED) { 1740 ccb = cam_periph_getccb(periph, 1); 1741 scsi_test_unit_ready(&ccb->csio, 0, sadone, 1742 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, 5 * 60 * 1000); 1743 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1744 &softc->device_stats); 1745 QFRLS(ccb); 1746 if (error == ENXIO) { 1747 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 1748 scsi_test_unit_ready(&ccb->csio, 0, sadone, 1749 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, 5 * 60 * 1000); 1750 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1751 &softc->device_stats); 1752 QFRLS(ccb); 1753 } else if (error) { 1754 /* 1755 * We don't need to freeze the tape because we 1756 * will now attempt to rewind/load it. 1757 */ 1758 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 1759 if (CAM_DEBUGGED(ccb->ccb_h.path, CAM_DEBUG_INFO)) { 1760 xpt_print_path(ccb->ccb_h.path); 1761 printf("error %d on TUR in samount\n", error); 1762 } 1763 } 1764 } else { 1765 error = sareservereleaseunit(periph, TRUE); 1766 if (error) { 1767 return (error); 1768 } 1769 ccb = cam_periph_getccb(periph, 1); 1770 scsi_test_unit_ready(&ccb->csio, 0, sadone, 1771 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, 5 * 60 * 1000); 1772 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1773 &softc->device_stats); 1774 QFRLS(ccb); 1775 } 1776 1777 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) { 1778 struct scsi_read_block_limits_data *rblim = NULL; 1779 int comp_enabled, comp_supported; 1780 u_int8_t write_protect, guessing = 0; 1781 1782 /* 1783 * Clear out old state. 1784 */ 1785 softc->flags &= ~(SA_FLAG_TAPE_WP|SA_FLAG_TAPE_WRITTEN| 1786 SA_FLAG_ERR_PENDING|SA_FLAG_COMP_ENABLED| 1787 SA_FLAG_COMP_SUPP|SA_FLAG_COMP_UNSUPP); 1788 softc->filemarks = 0; 1789 1790 /* 1791 * *Very* first off, make sure we're loaded to BOT. 1792 */ 1793 scsi_load_unload(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 1794 FALSE, FALSE, 1, SSD_FULL_SIZE, REWIND_TIMEOUT); 1795 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1796 &softc->device_stats); 1797 QFRLS(ccb); 1798 1799 /* 1800 * In case this doesn't work, do a REWIND instead 1801 */ 1802 if (error) { 1803 scsi_rewind(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, 1804 FALSE, SSD_FULL_SIZE, REWIND_TIMEOUT); 1805 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1806 &softc->device_stats); 1807 QFRLS(ccb); 1808 } 1809 if (error) { 1810 xpt_release_ccb(ccb); 1811 goto exit; 1812 } 1813 1814 /* 1815 * Do a dummy test read to force access to the 1816 * media so that the drive will really know what's 1817 * there. We actually don't really care what the 1818 * blocksize on tape is and don't expect to really 1819 * read a full record. 1820 */ 1821 rblim = (struct scsi_read_block_limits_data *) 1822 malloc(8192, M_TEMP, M_WAITOK); 1823 if (rblim == NULL) { 1824 xpt_print_path(ccb->ccb_h.path); 1825 printf("no memory for test read\n"); 1826 xpt_release_ccb(ccb); 1827 error = ENOMEM; 1828 goto exit; 1829 } 1830 1831 if ((softc->quirks & SA_QUIRK_NODREAD) == 0) { 1832 scsi_sa_read_write(&ccb->csio, 0, sadone, 1833 MSG_SIMPLE_Q_TAG, 1, FALSE, 0, 8192, 1834 (void *) rblim, 8192, SSD_FULL_SIZE, 1835 120 * 60 * 1000); 1836 (void) cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1837 &softc->device_stats); 1838 QFRLS(ccb); 1839 scsi_rewind(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, 1840 FALSE, SSD_FULL_SIZE, REWIND_TIMEOUT); 1841 error = cam_periph_runccb(ccb, saerror, 0, 1842 SF_NO_PRINT | SF_RETRY_SELTO | SF_RETRY_UA, 1843 &softc->device_stats); 1844 QFRLS(ccb); 1845 if (error) { 1846 xpt_print_path(ccb->ccb_h.path); 1847 printf("unable to rewind after test read\n"); 1848 xpt_release_ccb(ccb); 1849 goto exit; 1850 } 1851 } 1852 1853 /* 1854 * Next off, determine block limits. 1855 */ 1856 scsi_read_block_limits(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, 1857 rblim, SSD_FULL_SIZE, 5000); 1858 1859 error = cam_periph_runccb(ccb, saerror, 0, 1860 SF_NO_PRINT | SF_RETRY_UA | SF_RETRY_SELTO, 1861 &softc->device_stats); 1862 QFRLS(ccb); 1863 xpt_release_ccb(ccb); 1864 1865 if (error != 0) { 1866 /* 1867 * If it's less than SCSI-2, READ BLOCK LIMITS is not 1868 * a MANDATORY command. Anyway- it doesn't matter- 1869 * we can proceed anyway. 1870 */ 1871 softc->blk_gran = 0; 1872 softc->max_blk = ~0; 1873 softc->min_blk = 0; 1874 } else { 1875 if (softc->scsi_rev >= SCSI_REV_3) { 1876 softc->blk_gran = RBL_GRAN(rblim); 1877 } else { 1878 softc->blk_gran = 0; 1879 } 1880 /* 1881 * We take max_blk == min_blk to mean a default to 1882 * fixed mode- but note that whatever we get out of 1883 * sagetparams below will actually determine whether 1884 * we are actually *in* fixed mode. 1885 */ 1886 softc->max_blk = scsi_3btoul(rblim->maximum); 1887 softc->min_blk = scsi_2btoul(rblim->minimum); 1888 1889 1890 } 1891 /* 1892 * Next, perform a mode sense to determine 1893 * current density, blocksize, compression etc. 1894 */ 1895 error = sagetparams(periph, SA_PARAM_ALL, 1896 &softc->media_blksize, 1897 &softc->media_density, 1898 &softc->media_numblks, 1899 &softc->buffer_mode, &write_protect, 1900 &softc->speed, &comp_supported, 1901 &comp_enabled, &softc->comp_algorithm, 1902 NULL); 1903 1904 if (error != 0) { 1905 /* 1906 * We could work a little harder here. We could 1907 * adjust our attempts to get information. It 1908 * might be an ancient tape drive. If someone 1909 * nudges us, we'll do that. 1910 */ 1911 goto exit; 1912 } 1913 1914 /* 1915 * If no quirk has determined that this is a device that is 1916 * preferred to be in fixed or variable mode, now is the time 1917 * to find out. 1918 */ 1919 if ((softc->quirks & (SA_QUIRK_FIXED|SA_QUIRK_VARIABLE)) == 0) { 1920 guessing = 1; 1921 /* 1922 * This could be expensive to find out. Luckily we 1923 * only need to do this once. If we start out in 1924 * 'default' mode, try and set ourselves to one 1925 * of the densities that would determine a wad 1926 * of other stuff. Go from highest to lowest. 1927 */ 1928 if (softc->media_density == SCSI_DEFAULT_DENSITY) { 1929 int i; 1930 static u_int8_t ctry[] = { 1931 SCSI_DENSITY_HALFINCH_PE, 1932 SCSI_DENSITY_HALFINCH_6250C, 1933 SCSI_DENSITY_HALFINCH_6250, 1934 SCSI_DENSITY_HALFINCH_1600, 1935 SCSI_DENSITY_HALFINCH_800, 1936 SCSI_DENSITY_QIC_4GB, 1937 SCSI_DENSITY_QIC_2GB, 1938 SCSI_DENSITY_QIC_525_320, 1939 SCSI_DENSITY_QIC_150, 1940 SCSI_DENSITY_QIC_120, 1941 SCSI_DENSITY_QIC_24, 1942 SCSI_DENSITY_QIC_11_9TRK, 1943 SCSI_DENSITY_QIC_11_4TRK, 1944 SCSI_DENSITY_QIC_1320, 1945 SCSI_DENSITY_QIC_3080, 1946 0 1947 }; 1948 for (i = 0; ctry[i]; i++) { 1949 error = sasetparams(periph, 1950 SA_PARAM_DENSITY, 0, ctry[i], 1951 0, SF_NO_PRINT); 1952 if (error == 0) { 1953 softc->media_density = ctry[i]; 1954 break; 1955 } 1956 } 1957 } 1958 switch (softc->media_density) { 1959 case SCSI_DENSITY_QIC_11_4TRK: 1960 case SCSI_DENSITY_QIC_11_9TRK: 1961 case SCSI_DENSITY_QIC_24: 1962 case SCSI_DENSITY_QIC_120: 1963 case SCSI_DENSITY_QIC_150: 1964 case SCSI_DENSITY_QIC_1320: 1965 case SCSI_DENSITY_QIC_3080: 1966 softc->quirks &= ~SA_QUIRK_2FM; 1967 softc->quirks |= SA_QUIRK_FIXED|SA_QUIRK_1FM; 1968 softc->last_media_blksize = 512; 1969 break; 1970 case SCSI_DENSITY_QIC_4GB: 1971 case SCSI_DENSITY_QIC_2GB: 1972 case SCSI_DENSITY_QIC_525_320: 1973 softc->quirks &= ~SA_QUIRK_2FM; 1974 softc->quirks |= SA_QUIRK_FIXED|SA_QUIRK_1FM; 1975 softc->last_media_blksize = 1024; 1976 break; 1977 default: 1978 softc->last_media_blksize = 1979 softc->media_blksize; 1980 softc->quirks |= SA_QUIRK_VARIABLE; 1981 break; 1982 } 1983 } 1984 1985 /* 1986 * If no quirk has determined that this is a device that needs 1987 * to have 2 Filemarks at EOD, now is the time to find out. 1988 */ 1989 1990 if ((softc->quirks & SA_QUIRK_2FM) == 0) { 1991 switch (softc->media_density) { 1992 case SCSI_DENSITY_HALFINCH_800: 1993 case SCSI_DENSITY_HALFINCH_1600: 1994 case SCSI_DENSITY_HALFINCH_6250: 1995 case SCSI_DENSITY_HALFINCH_6250C: 1996 case SCSI_DENSITY_HALFINCH_PE: 1997 softc->quirks &= ~SA_QUIRK_1FM; 1998 softc->quirks |= SA_QUIRK_2FM; 1999 break; 2000 default: 2001 break; 2002 } 2003 } 2004 2005 /* 2006 * Now validate that some info we got makes sense. 2007 */ 2008 if ((softc->max_blk < softc->media_blksize) || 2009 (softc->min_blk > softc->media_blksize && 2010 softc->media_blksize)) { 2011 xpt_print_path(ccb->ccb_h.path); 2012 printf("BLOCK LIMITS (%d..%d) could not match current " 2013 "block settings (%d)- adjusting\n", softc->min_blk, 2014 softc->max_blk, softc->media_blksize); 2015 softc->max_blk = softc->min_blk = 2016 softc->media_blksize; 2017 } 2018 2019 /* 2020 * Now put ourselves into the right frame of mind based 2021 * upon quirks... 2022 */ 2023 tryagain: 2024 /* 2025 * If we want to be in FIXED mode and our current blocksize 2026 * is not equal to our last blocksize (if nonzero), try and 2027 * set ourselves to this last blocksize (as the 'preferred' 2028 * block size). The initial quirkmatch at registry sets the 2029 * initial 'last' blocksize. If, for whatever reason, this 2030 * 'last' blocksize is zero, set the blocksize to 512, 2031 * or min_blk if that's larger. 2032 */ 2033 if ((softc->quirks & SA_QUIRK_FIXED) && 2034 (softc->media_blksize != softc->last_media_blksize)) { 2035 softc->media_blksize = softc->last_media_blksize; 2036 if (softc->media_blksize == 0) { 2037 softc->media_blksize = 512; 2038 if (softc->media_blksize < softc->min_blk) { 2039 softc->media_blksize = softc->min_blk; 2040 } 2041 } 2042 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, 2043 softc->media_blksize, 0, 0, SF_NO_PRINT); 2044 if (error) { 2045 xpt_print_path(ccb->ccb_h.path); 2046 printf("unable to set fixed blocksize to %d\n", 2047 softc->media_blksize); 2048 goto exit; 2049 } 2050 } 2051 2052 if ((softc->quirks & SA_QUIRK_VARIABLE) && 2053 (softc->media_blksize != 0)) { 2054 softc->last_media_blksize = softc->media_blksize; 2055 softc->media_blksize = 0; 2056 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, 2057 0, 0, 0, SF_NO_PRINT); 2058 if (error) { 2059 /* 2060 * If this fails and we were guessing, just 2061 * assume that we got it wrong and go try 2062 * fixed block mode. Don't even check against 2063 * density code at this point. 2064 */ 2065 if (guessing) { 2066 softc->quirks &= ~SA_QUIRK_VARIABLE; 2067 softc->quirks |= SA_QUIRK_FIXED; 2068 if (softc->last_media_blksize == 0) 2069 softc->last_media_blksize = 512; 2070 goto tryagain; 2071 } 2072 xpt_print_path(ccb->ccb_h.path); 2073 printf("unable to set variable blocksize\n"); 2074 goto exit; 2075 } 2076 } 2077 2078 /* 2079 * Now that we have the current block size, 2080 * set up some parameters for sastart's usage. 2081 */ 2082 if (softc->media_blksize) { 2083 softc->flags |= SA_FLAG_FIXED; 2084 if (powerof2(softc->media_blksize)) { 2085 softc->blk_shift = 2086 ffs(softc->media_blksize) - 1; 2087 softc->blk_mask = softc->media_blksize - 1; 2088 } else { 2089 softc->blk_mask = ~0; 2090 softc->blk_shift = 0; 2091 } 2092 } else { 2093 /* 2094 * The SCSI-3 spec allows 0 to mean "unspecified". 2095 * The SCSI-1 spec allows 0 to mean 'infinite'. 2096 * 2097 * Either works here. 2098 */ 2099 if (softc->max_blk == 0) { 2100 softc->max_blk = ~0; 2101 } 2102 softc->blk_shift = 0; 2103 if (softc->blk_gran != 0) { 2104 softc->blk_mask = softc->blk_gran - 1; 2105 } else { 2106 softc->blk_mask = 0; 2107 } 2108 } 2109 2110 if (write_protect) 2111 softc->flags |= SA_FLAG_TAPE_WP; 2112 2113 if (comp_supported) { 2114 if (softc->saved_comp_algorithm == 0) 2115 softc->saved_comp_algorithm = 2116 softc->comp_algorithm; 2117 softc->flags |= SA_FLAG_COMP_SUPP; 2118 if (comp_enabled) 2119 softc->flags |= SA_FLAG_COMP_ENABLED; 2120 } else 2121 softc->flags |= SA_FLAG_COMP_UNSUPP; 2122 2123 if (softc->buffer_mode == SMH_SA_BUF_MODE_NOBUF) { 2124 error = sasetparams(periph, SA_PARAM_BUFF_MODE, 0, 2125 0, 0, SF_NO_PRINT); 2126 if (error == 0) 2127 softc->buffer_mode = SMH_SA_BUF_MODE_SIBUF; 2128 } 2129 2130 2131 if (error == 0) { 2132 softc->flags |= SA_FLAG_TAPE_MOUNTED; 2133 } 2134 exit: 2135 if (rblim != NULL) 2136 free(rblim, M_TEMP); 2137 2138 if (error != 0) { 2139 softc->dsreg = MTIO_DSREG_NIL; 2140 } else { 2141 softc->fileno = softc->blkno = 0; 2142 softc->dsreg = MTIO_DSREG_REST; 2143 } 2144 #ifdef SA_1FM_AT_EOD 2145 if ((softc->quirks & SA_QUIRK_2FM) == 0) 2146 softc->quirks |= SA_QUIRK_1FM; 2147 #else 2148 if ((softc->quirks & SA_QUIRK_1FM) == 0) 2149 softc->quirks |= SA_QUIRK_2FM; 2150 #endif 2151 } else 2152 xpt_release_ccb(ccb); 2153 2154 /* 2155 * If we return an error, we're not mounted any more, 2156 * so release any device reservation. 2157 */ 2158 if (error != 0) { 2159 (void) sareservereleaseunit(periph, FALSE); 2160 } 2161 return (error); 2162 } 2163 2164 static int 2165 sacheckeod(struct cam_periph *periph) 2166 { 2167 int error; 2168 int markswanted; 2169 struct sa_softc *softc; 2170 2171 softc = (struct sa_softc *)periph->softc; 2172 markswanted = 0; 2173 2174 if ((softc->flags & SA_FLAG_TAPE_WRITTEN) != 0) { 2175 markswanted++; 2176 if (softc->quirks & SA_QUIRK_2FM) 2177 markswanted++; 2178 } 2179 2180 if (softc->filemarks < markswanted) { 2181 markswanted -= softc->filemarks; 2182 error = sawritefilemarks(periph, markswanted, FALSE); 2183 } else { 2184 error = 0; 2185 } 2186 return (error); 2187 } 2188 2189 static int 2190 saerror(union ccb *ccb, u_int32_t cflgs, u_int32_t sflgs) 2191 { 2192 static const char *toobig = 2193 "%d-byte tape record bigger than suplied buffer\n"; 2194 struct cam_periph *periph; 2195 struct sa_softc *softc; 2196 struct ccb_scsiio *csio; 2197 struct scsi_sense_data *sense; 2198 u_int32_t resid = 0; 2199 int32_t info = 0; 2200 int error_code, sense_key, asc, ascq; 2201 int error, defer_action; 2202 2203 periph = xpt_path_periph(ccb->ccb_h.path); 2204 softc = (struct sa_softc *)periph->softc; 2205 csio = &ccb->csio; 2206 sense = &csio->sense_data; 2207 scsi_extract_sense(sense, &error_code, &sense_key, &asc, &ascq); 2208 error = 0; 2209 2210 /* 2211 * Calculate/latch up, any residuals... 2212 */ 2213 if ((csio->ccb_h.status & CAM_STATUS_MASK) == CAM_SCSI_STATUS_ERROR) { 2214 if ((sense->error_code & SSD_ERRCODE_VALID) != 0) { 2215 info = (int32_t) scsi_4btoul(sense->info); 2216 resid = info; 2217 if ((softc->flags & SA_FLAG_FIXED) != 0) 2218 resid *= softc->media_blksize; 2219 } else { 2220 resid = csio->dxfer_len; 2221 info = resid; 2222 if ((softc->flags & SA_FLAG_FIXED) != 0) { 2223 if (softc->media_blksize) 2224 info /= softc->media_blksize; 2225 } 2226 } 2227 if (csio->ccb_h.ccb_type == SA_CCB_BUFFER_IO) { 2228 bcopy((caddr_t) sense, (caddr_t) &softc->last_io_sense, 2229 sizeof (struct scsi_sense_data)); 2230 bcopy(csio->cdb_io.cdb_bytes, softc->last_io_cdb, 2231 (int) csio->cdb_len); 2232 softc->last_io_resid = resid; 2233 } else { 2234 bcopy((caddr_t) sense, (caddr_t) &softc->last_ctl_sense, 2235 sizeof (struct scsi_sense_data)); 2236 bcopy(csio->cdb_io.cdb_bytes, softc->last_ctl_cdb, 2237 (int) csio->cdb_len); 2238 softc->last_ctl_resid = resid; 2239 } 2240 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("Key 0x%x ASC/ASCQ 2241 0x%x 0x%x flags 0x%x resid %d dxfer_len %d\n", sense_key, 2242 asc, ascq, sense->flags & ~SSD_KEY_RESERVED, resid, 2243 csio->dxfer_len)); 2244 } else { 2245 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("Cam Status 0x%x\n", 2246 csio->ccb_h.status & CAM_STATUS_MASK)); 2247 } 2248 2249 /* 2250 * If it's neither a SCSI Check Condition Error nor a non-read/write 2251 * command, let the common code deal with it the error setting. 2252 */ 2253 if ((csio->ccb_h.status & CAM_STATUS_MASK) != CAM_SCSI_STATUS_ERROR || 2254 (csio->ccb_h.ccb_type == SA_CCB_WAITING)) { 2255 return (cam_periph_error(ccb, cflgs, sflgs, &softc->saved_ccb)); 2256 } 2257 2258 /* 2259 * Calculate whether we'll defer action. 2260 */ 2261 2262 if (resid > 0 && resid < csio->dxfer_len && 2263 (softc->flags & SA_FLAG_FIXED) != 0) { 2264 defer_action = TRUE; 2265 } else { 2266 defer_action = FALSE; 2267 } 2268 2269 /* 2270 * Handle filemark, end of tape, mismatched record sizes.... 2271 * From this point out, we're only handling read/write cases. 2272 * Handle writes && reads differently. 2273 */ 2274 2275 if (csio->cdb_io.cdb_bytes[0] == SA_WRITE) { 2276 if (sense->flags & SSD_FILEMARK) { 2277 xpt_print_path(csio->ccb_h.path); 2278 printf("filemark detected on write?\n"); 2279 if (softc->fileno != (daddr_t) -1) { 2280 softc->fileno++; 2281 softc->blkno = 0; 2282 } 2283 } 2284 if (sense->flags & SSD_EOM) { 2285 csio->resid = resid; 2286 if (defer_action) { 2287 error = -1; 2288 softc->flags |= SA_FLAG_EOM_PENDING; 2289 } else { 2290 error = ENOSPC; 2291 } 2292 } 2293 } else { 2294 if (sense_key == SSD_KEY_BLANK_CHECK) { 2295 csio->resid = resid; 2296 if (defer_action) { 2297 error = -1; 2298 softc->flags |= SA_FLAG_EOM_PENDING; 2299 } else { 2300 error = EIO; 2301 } 2302 } 2303 if (sense->flags & SSD_FILEMARK) { 2304 csio->resid = resid; 2305 if (defer_action) { 2306 error = -1; 2307 softc->flags |= SA_FLAG_EOF_PENDING; 2308 } 2309 /* 2310 * Unconditionally, if we detected a filemark on a read, 2311 * mark that we've run moved a file ahead. 2312 */ 2313 if (softc->fileno != (daddr_t) -1) { 2314 softc->fileno++; 2315 softc->blkno = 0; 2316 } 2317 } 2318 } 2319 /* 2320 * Incorrect Length usually applies to read, but can apply to writes. 2321 */ 2322 if (error == 0 && (sense->flags & SSD_ILI)) { 2323 if (info < 0) { 2324 xpt_print_path(csio->ccb_h.path); 2325 printf(toobig, csio->dxfer_len - info); 2326 csio->resid = csio->dxfer_len; 2327 error = EIO; 2328 } else { 2329 csio->resid = resid; 2330 if ((softc->flags & SA_FLAG_FIXED) != 0) { 2331 if (defer_action) 2332 softc->flags |= SA_FLAG_EIO_PENDING; 2333 else 2334 error = EIO; 2335 } 2336 /* 2337 * Bump the block number if we hadn't seen a filemark. 2338 * Do this independent of errors (we've moved anyway). 2339 */ 2340 if ((sense->flags & SSD_FILEMARK) == 0) { 2341 if (softc->blkno != (daddr_t) -1) { 2342 softc->blkno++; 2343 } 2344 } 2345 } 2346 } 2347 if (error == 0) 2348 return (cam_periph_error(ccb, cflgs, sflgs, &softc->saved_ccb)); 2349 2350 if (error == -1) 2351 return (0); 2352 else 2353 return (error); 2354 } 2355 2356 static int 2357 sagetparams(struct cam_periph *periph, sa_params params_to_get, 2358 u_int32_t *blocksize, u_int8_t *density, u_int32_t *numblocks, 2359 int *buff_mode, u_int8_t *write_protect, u_int8_t *speed, 2360 int *comp_supported, int *comp_enabled, u_int32_t *comp_algorithm, 2361 sa_comp_t *tcs) 2362 { 2363 union ccb *ccb; 2364 void *mode_buffer; 2365 struct scsi_mode_header_6 *mode_hdr; 2366 struct scsi_mode_blk_desc *mode_blk; 2367 int mode_buffer_len; 2368 struct sa_softc *softc; 2369 u_int8_t cpage; 2370 int error; 2371 cam_status status; 2372 2373 softc = (struct sa_softc *)periph->softc; 2374 ccb = cam_periph_getccb(periph, 1); 2375 cpage = SA_DATA_COMPRESSION_PAGE; 2376 2377 retry: 2378 mode_buffer_len = sizeof(*mode_hdr) + sizeof(*mode_blk); 2379 2380 if (params_to_get & SA_PARAM_COMPRESSION) { 2381 if (softc->quirks & SA_QUIRK_NOCOMP) { 2382 *comp_supported = FALSE; 2383 params_to_get &= ~SA_PARAM_COMPRESSION; 2384 } else 2385 mode_buffer_len += sizeof (sa_comp_t); 2386 } 2387 2388 mode_buffer = malloc(mode_buffer_len, M_TEMP, M_WAITOK); 2389 bzero(mode_buffer, mode_buffer_len); 2390 mode_hdr = (struct scsi_mode_header_6 *)mode_buffer; 2391 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 2392 2393 /* it is safe to retry this */ 2394 scsi_mode_sense(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 2395 SMS_PAGE_CTRL_CURRENT, (params_to_get & SA_PARAM_COMPRESSION) ? 2396 cpage : SMS_VENDOR_SPECIFIC_PAGE, mode_buffer, mode_buffer_len, 2397 SSD_FULL_SIZE, 5000); 2398 2399 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2400 &softc->device_stats); 2401 QFRLS(ccb); 2402 2403 status = ccb->ccb_h.status & CAM_STATUS_MASK; 2404 2405 if (error == EINVAL && (params_to_get & SA_PARAM_COMPRESSION) != 0) { 2406 /* 2407 * Hmm. Let's see if we can try another page... 2408 * If we've already done that, give up on compression 2409 * for this device and remember this for the future 2410 * and attempt the request without asking for compression 2411 * info. 2412 */ 2413 if (cpage == SA_DATA_COMPRESSION_PAGE) { 2414 cpage = SA_DEVICE_CONFIGURATION_PAGE; 2415 goto retry; 2416 } 2417 softc->quirks |= SA_QUIRK_NOCOMP; 2418 free(mode_buffer, M_TEMP); 2419 goto retry; 2420 } else if (status == CAM_SCSI_STATUS_ERROR) { 2421 /* Tell the user about the fatal error. */ 2422 scsi_sense_print(&ccb->csio); 2423 goto sagetparamsexit; 2424 } 2425 2426 /* 2427 * If the user only wants the compression information, and 2428 * the device doesn't send back the block descriptor, it's 2429 * no big deal. If the user wants more than just 2430 * compression, though, and the device doesn't pass back the 2431 * block descriptor, we need to send another mode sense to 2432 * get the block descriptor. 2433 */ 2434 if ((mode_hdr->blk_desc_len == 0) && 2435 (params_to_get & SA_PARAM_COMPRESSION) && 2436 (params_to_get & ~(SA_PARAM_COMPRESSION))) { 2437 2438 /* 2439 * Decrease the mode buffer length by the size of 2440 * the compression page, to make sure the data 2441 * there doesn't get overwritten. 2442 */ 2443 mode_buffer_len -= sizeof (sa_comp_t); 2444 2445 /* 2446 * Now move the compression page that we presumably 2447 * got back down the memory chunk a little bit so 2448 * it doesn't get spammed. 2449 */ 2450 bcopy(&mode_hdr[0], &mode_hdr[1], sizeof (sa_comp_t)); 2451 bzero(&mode_hdr[0], sizeof (mode_hdr[0])); 2452 2453 /* 2454 * Now, we issue another mode sense and just ask 2455 * for the block descriptor, etc. 2456 */ 2457 2458 scsi_mode_sense(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 2459 SMS_PAGE_CTRL_CURRENT, SMS_VENDOR_SPECIFIC_PAGE, 2460 mode_buffer, mode_buffer_len, SSD_FULL_SIZE, 5000); 2461 2462 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2463 &softc->device_stats); 2464 QFRLS(ccb); 2465 2466 if (error != 0) 2467 goto sagetparamsexit; 2468 } 2469 2470 if (params_to_get & SA_PARAM_BLOCKSIZE) 2471 *blocksize = scsi_3btoul(mode_blk->blklen); 2472 2473 if (params_to_get & SA_PARAM_NUMBLOCKS) 2474 *numblocks = scsi_3btoul(mode_blk->nblocks); 2475 2476 if (params_to_get & SA_PARAM_BUFF_MODE) 2477 *buff_mode = mode_hdr->dev_spec & SMH_SA_BUF_MODE_MASK; 2478 2479 if (params_to_get & SA_PARAM_DENSITY) 2480 *density = mode_blk->density; 2481 2482 if (params_to_get & SA_PARAM_WP) 2483 *write_protect = (mode_hdr->dev_spec & SMH_SA_WP)? TRUE : FALSE; 2484 2485 if (params_to_get & SA_PARAM_SPEED) 2486 *speed = mode_hdr->dev_spec & SMH_SA_SPEED_MASK; 2487 2488 if (params_to_get & SA_PARAM_COMPRESSION) { 2489 sa_comp_t *ntcs = (sa_comp_t *) &mode_blk[1]; 2490 if (cpage == SA_DATA_COMPRESSION_PAGE) { 2491 struct scsi_data_compression_page *cp = &ntcs->dcomp; 2492 *comp_supported = 2493 (cp->dce_and_dcc & SA_DCP_DCC)? TRUE : FALSE; 2494 *comp_enabled = 2495 (cp->dce_and_dcc & SA_DCP_DCE)? TRUE : FALSE; 2496 *comp_algorithm = scsi_4btoul(cp->comp_algorithm); 2497 } else { 2498 struct scsi_dev_conf_page *cp = &ntcs->dconf; 2499 /* 2500 * We don't really know whether this device supports 2501 * Data Compression if the the algorithm field is 2502 * zero. Just say we do. 2503 */ 2504 *comp_supported = TRUE; 2505 *comp_enabled = 2506 (cp->sel_comp_alg != SA_COMP_NONE)? TRUE : FALSE; 2507 *comp_algorithm = cp->sel_comp_alg; 2508 } 2509 if (tcs != NULL) 2510 bcopy(ntcs, tcs, sizeof (sa_comp_t)); 2511 } 2512 2513 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 2514 int idx; 2515 char *xyz = mode_buffer; 2516 xpt_print_path(periph->path); 2517 printf("Mode Sense Data="); 2518 for (idx = 0; idx < mode_buffer_len; idx++) 2519 printf(" 0x%02x", xyz[idx] & 0xff); 2520 printf("\n"); 2521 } 2522 2523 sagetparamsexit: 2524 2525 xpt_release_ccb(ccb); 2526 free(mode_buffer, M_TEMP); 2527 return (error); 2528 } 2529 2530 /* 2531 * The purpose of this function is to set one of four different parameters 2532 * for a tape drive: 2533 * - blocksize 2534 * - density 2535 * - compression / compression algorithm 2536 * - buffering mode 2537 * 2538 * The assumption is that this will be called from saioctl(), and therefore 2539 * from a process context. Thus the waiting malloc calls below. If that 2540 * assumption ever changes, the malloc calls should be changed to be 2541 * NOWAIT mallocs. 2542 * 2543 * Any or all of the four parameters may be set when this function is 2544 * called. It should handle setting more than one parameter at once. 2545 */ 2546 static int 2547 sasetparams(struct cam_periph *periph, sa_params params_to_set, 2548 u_int32_t blocksize, u_int8_t density, u_int32_t calg, 2549 u_int32_t sense_flags) 2550 { 2551 struct sa_softc *softc; 2552 u_int32_t current_blocksize; 2553 u_int32_t current_calg; 2554 u_int8_t current_density; 2555 u_int8_t current_speed; 2556 int comp_enabled, comp_supported; 2557 void *mode_buffer; 2558 int mode_buffer_len; 2559 struct scsi_mode_header_6 *mode_hdr; 2560 struct scsi_mode_blk_desc *mode_blk; 2561 sa_comp_t *ccomp, *cpage; 2562 int buff_mode; 2563 union ccb *ccb = NULL; 2564 int error; 2565 2566 softc = (struct sa_softc *)periph->softc; 2567 2568 ccomp = malloc(sizeof (sa_comp_t), M_TEMP, M_WAITOK); 2569 2570 /* 2571 * Since it doesn't make sense to set the number of blocks, or 2572 * write protection, we won't try to get the current value. We 2573 * always want to get the blocksize, so we can set it back to the 2574 * proper value. 2575 */ 2576 error = sagetparams(periph, 2577 params_to_set | SA_PARAM_BLOCKSIZE | SA_PARAM_SPEED, 2578 ¤t_blocksize, ¤t_density, NULL, &buff_mode, NULL, 2579 ¤t_speed, &comp_supported, &comp_enabled, 2580 ¤t_calg, ccomp); 2581 2582 if (error != 0) { 2583 free(ccomp, M_TEMP); 2584 return (error); 2585 } 2586 2587 mode_buffer_len = sizeof(*mode_hdr) + sizeof(*mode_blk); 2588 if (params_to_set & SA_PARAM_COMPRESSION) 2589 mode_buffer_len += sizeof (sa_comp_t); 2590 2591 mode_buffer = malloc(mode_buffer_len, M_TEMP, M_WAITOK); 2592 bzero(mode_buffer, mode_buffer_len); 2593 2594 mode_hdr = (struct scsi_mode_header_6 *)mode_buffer; 2595 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 2596 2597 ccb = cam_periph_getccb(periph, 1); 2598 2599 retry: 2600 2601 if (params_to_set & SA_PARAM_COMPRESSION) { 2602 if (mode_blk) { 2603 cpage = (sa_comp_t *)&mode_blk[1]; 2604 } else { 2605 cpage = (sa_comp_t *)&mode_hdr[1]; 2606 } 2607 bcopy(ccomp, cpage, sizeof (sa_comp_t)); 2608 cpage->hdr.pagecode &= ~0x80; 2609 } else 2610 cpage = NULL; 2611 2612 /* 2613 * If the caller wants us to set the blocksize, use the one they 2614 * pass in. Otherwise, use the blocksize we got back from the 2615 * mode select above. 2616 */ 2617 if (mode_blk) { 2618 if (params_to_set & SA_PARAM_BLOCKSIZE) 2619 scsi_ulto3b(blocksize, mode_blk->blklen); 2620 else 2621 scsi_ulto3b(current_blocksize, mode_blk->blklen); 2622 2623 /* 2624 * Set density if requested, else preserve old density. 2625 * SCSI_SAME_DENSITY only applies to SCSI-2 or better 2626 * devices, else density we've latched up in our softc. 2627 */ 2628 if (params_to_set & SA_PARAM_DENSITY) { 2629 mode_blk->density = density; 2630 } else if (softc->scsi_rev > SCSI_REV_CCS) { 2631 mode_blk->density = SCSI_SAME_DENSITY; 2632 } else { 2633 mode_blk->density = softc->media_density; 2634 } 2635 } 2636 2637 /* 2638 * For mode selects, these two fields must be zero. 2639 */ 2640 mode_hdr->data_length = 0; 2641 mode_hdr->medium_type = 0; 2642 2643 /* set the speed to the current value */ 2644 mode_hdr->dev_spec = current_speed; 2645 2646 /* set single-initiator buffering mode */ 2647 mode_hdr->dev_spec |= SMH_SA_BUF_MODE_SIBUF; 2648 2649 if (mode_blk) 2650 mode_hdr->blk_desc_len = sizeof(struct scsi_mode_blk_desc); 2651 else 2652 mode_hdr->blk_desc_len = 0; 2653 2654 /* 2655 * First, if the user wants us to set the compression algorithm or 2656 * just turn compression on, check to make sure that this drive 2657 * supports compression. 2658 */ 2659 if (params_to_set & SA_PARAM_COMPRESSION) { 2660 /* 2661 * If the compression algorithm is 0, disable compression. 2662 * If the compression algorithm is non-zero, enable 2663 * compression and set the compression type to the 2664 * specified compression algorithm, unless the algorithm is 2665 * MT_COMP_ENABLE. In that case, we look at the 2666 * compression algorithm that is currently set and if it is 2667 * non-zero, we leave it as-is. If it is zero, and we have 2668 * saved a compression algorithm from a time when 2669 * compression was enabled before, set the compression to 2670 * the saved value. 2671 */ 2672 switch (ccomp->hdr.pagecode & ~0x80) { 2673 case SA_DATA_COMPRESSION_PAGE: 2674 if (ccomp->dcomp.dce_and_dcc & SA_DCP_DCC) { 2675 struct scsi_data_compression_page *dcp = &cpage->dcomp; 2676 if (calg == 0) { 2677 /* 2678 * Disable compression, but leave the 2679 * decompression and the capability bit 2680 * alone. 2681 */ 2682 dcp->dce_and_dcc = SA_DCP_DCC; 2683 dcp->dde_and_red |= SA_DCP_DDE; 2684 break; 2685 } 2686 /* enable compression && decompression */ 2687 dcp->dce_and_dcc = SA_DCP_DCE | SA_DCP_DCC; 2688 dcp->dde_and_red |= SA_DCP_DDE; 2689 /* 2690 * If there, use compression algorithm from caller. 2691 * Otherwise, if there's a saved compression algorithm 2692 * and there is no current algorithm, use the saved 2693 * algorithm. Else parrot back what we got and hope 2694 * for the best. 2695 */ 2696 if (calg != MT_COMP_ENABLE) { 2697 scsi_ulto4b(calg, dcp->comp_algorithm); 2698 scsi_ulto4b(calg, dcp->decomp_algorithm); 2699 } else if (scsi_4btoul(dcp->comp_algorithm) == 0 && 2700 softc->saved_comp_algorithm != 0) { 2701 scsi_ulto4b(softc->saved_comp_algorithm, 2702 dcp->comp_algorithm); 2703 scsi_ulto4b(softc->saved_comp_algorithm, 2704 dcp->decomp_algorithm); 2705 } 2706 break; 2707 } 2708 case SA_DEVICE_CONFIGURATION_PAGE: 2709 { 2710 struct scsi_dev_conf_page *dcp = &cpage->dconf; 2711 if (calg == 0) { 2712 dcp->sel_comp_alg = SA_COMP_NONE; 2713 break; 2714 } 2715 if (calg != MT_COMP_ENABLE) { 2716 dcp->sel_comp_alg = calg; 2717 } else if (dcp->sel_comp_alg == SA_COMP_NONE && 2718 softc->saved_comp_algorithm != 0) { 2719 dcp->sel_comp_alg = softc->saved_comp_algorithm; 2720 } 2721 break; 2722 } 2723 default: 2724 /* 2725 * The drive doesn't seem to support compression, 2726 * so turn off the set compression bit. 2727 */ 2728 params_to_set &= ~SA_PARAM_COMPRESSION; 2729 xpt_print_path(periph->path); 2730 printf("device does not seem to support compression\n"); 2731 2732 /* 2733 * If that was the only thing the user wanted us to set, 2734 * clean up allocated resources and return with 2735 * 'operation not supported'. 2736 */ 2737 if (params_to_set == SA_PARAM_NONE) { 2738 free(mode_buffer, M_TEMP); 2739 xpt_release_ccb(ccb); 2740 return (ENODEV); 2741 } 2742 2743 /* 2744 * That wasn't the only thing the user wanted us to set. 2745 * So, decrease the stated mode buffer length by the 2746 * size of the compression mode page. 2747 */ 2748 mode_buffer_len -= sizeof(sa_comp_t); 2749 } 2750 } 2751 2752 /* It is safe to retry this operation */ 2753 scsi_mode_select(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, 2754 (params_to_set & SA_PARAM_COMPRESSION)? TRUE : FALSE, 2755 FALSE, mode_buffer, mode_buffer_len, SSD_FULL_SIZE, 5000); 2756 2757 error = cam_periph_runccb(ccb, saerror, 0, 2758 sense_flags, &softc->device_stats); 2759 QFRLS(ccb); 2760 2761 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 2762 int idx; 2763 char *xyz = mode_buffer; 2764 xpt_print_path(periph->path); 2765 printf("Err%d, Mode Select Data=", error); 2766 for (idx = 0; idx < mode_buffer_len; idx++) 2767 printf(" 0x%02x", xyz[idx] & 0xff); 2768 printf("\n"); 2769 } 2770 2771 2772 if (error) { 2773 /* 2774 * If we can, try without setting density/blocksize. 2775 */ 2776 if (mode_blk) { 2777 if ((params_to_set & 2778 (SA_PARAM_DENSITY|SA_PARAM_BLOCKSIZE)) == 0) { 2779 mode_blk = NULL; 2780 goto retry; 2781 } 2782 } else { 2783 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 2784 cpage = (sa_comp_t *)&mode_blk[1]; 2785 } 2786 2787 /* 2788 * If we were setting the blocksize, and that failed, we 2789 * want to set it to its original value. If we weren't 2790 * setting the blocksize, we don't want to change it. 2791 */ 2792 scsi_ulto3b(current_blocksize, mode_blk->blklen); 2793 2794 /* 2795 * Set density if requested, else preserve old density. 2796 * SCSI_SAME_DENSITY only applies to SCSI-2 or better 2797 * devices, else density we've latched up in our softc. 2798 */ 2799 if (params_to_set & SA_PARAM_DENSITY) { 2800 mode_blk->density = current_density; 2801 } else if (softc->scsi_rev > SCSI_REV_CCS) { 2802 mode_blk->density = SCSI_SAME_DENSITY; 2803 } else { 2804 mode_blk->density = softc->media_density; 2805 } 2806 2807 if (params_to_set & SA_PARAM_COMPRESSION) 2808 bcopy(ccomp, cpage, sizeof (sa_comp_t)); 2809 2810 /* 2811 * The retry count is the only CCB field that might have been 2812 * changed that we care about, so reset it back to 1. 2813 */ 2814 ccb->ccb_h.retry_count = 1; 2815 cam_periph_runccb(ccb, saerror, 0, sense_flags, 2816 &softc->device_stats); 2817 QFRLS(ccb); 2818 } 2819 2820 xpt_release_ccb(ccb); 2821 2822 if (ccomp != NULL) 2823 free(ccomp, M_TEMP); 2824 2825 if (params_to_set & SA_PARAM_COMPRESSION) { 2826 if (error) { 2827 softc->flags &= ~SA_FLAG_COMP_ENABLED; 2828 /* 2829 * Even if we get an error setting compression, 2830 * do not say that we don't support it. We could 2831 * have been wrong, or it may be media specific. 2832 * softc->flags &= ~SA_FLAG_COMP_SUPP; 2833 */ 2834 softc->saved_comp_algorithm = softc->comp_algorithm; 2835 softc->comp_algorithm = 0; 2836 } else { 2837 softc->flags |= SA_FLAG_COMP_ENABLED; 2838 softc->comp_algorithm = calg; 2839 } 2840 } 2841 2842 free(mode_buffer, M_TEMP); 2843 return (error); 2844 } 2845 2846 static void 2847 saprevent(struct cam_periph *periph, int action) 2848 { 2849 struct sa_softc *softc; 2850 union ccb *ccb; 2851 int error, sf; 2852 2853 softc = (struct sa_softc *)periph->softc; 2854 2855 if ((action == PR_ALLOW) && (softc->flags & SA_FLAG_TAPE_LOCKED) == 0) 2856 return; 2857 if ((action == PR_PREVENT) && (softc->flags & SA_FLAG_TAPE_LOCKED) != 0) 2858 return; 2859 2860 /* 2861 * We can be quiet about illegal requests. 2862 */ 2863 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 2864 sf = 0; 2865 } else 2866 sf = SF_QUIET_IR; 2867 2868 ccb = cam_periph_getccb(periph, 1); 2869 2870 /* It is safe to retry this operation */ 2871 scsi_prevent(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, action, 2872 SSD_FULL_SIZE, 100000); 2873 2874 error = cam_periph_runccb(ccb, saerror, 0, sf, &softc->device_stats); 2875 QFRLS(ccb); 2876 if (error == 0) { 2877 if (action == PR_ALLOW) 2878 softc->flags &= ~SA_FLAG_TAPE_LOCKED; 2879 else 2880 softc->flags |= SA_FLAG_TAPE_LOCKED; 2881 } 2882 2883 xpt_release_ccb(ccb); 2884 } 2885 2886 static int 2887 sarewind(struct cam_periph *periph) 2888 { 2889 union ccb *ccb; 2890 struct sa_softc *softc; 2891 int error; 2892 2893 softc = (struct sa_softc *)periph->softc; 2894 2895 ccb = cam_periph_getccb(periph, 1); 2896 2897 /* It is safe to retry this operation */ 2898 scsi_rewind(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 2899 SSD_FULL_SIZE, REWIND_TIMEOUT); 2900 2901 softc->dsreg = MTIO_DSREG_REW; 2902 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 2903 softc->dsreg = MTIO_DSREG_REST; 2904 2905 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 2906 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 2907 2908 xpt_release_ccb(ccb); 2909 if (error == 0) 2910 softc->fileno = softc->blkno = (daddr_t) 0; 2911 else 2912 softc->fileno = softc->blkno = (daddr_t) -1; 2913 return (error); 2914 } 2915 2916 static int 2917 saspace(struct cam_periph *periph, int count, scsi_space_code code) 2918 { 2919 union ccb *ccb; 2920 struct sa_softc *softc; 2921 int error; 2922 2923 softc = (struct sa_softc *)periph->softc; 2924 2925 ccb = cam_periph_getccb(periph, 1); 2926 2927 /* This cannot be retried */ 2928 2929 scsi_space(&ccb->csio, 0, sadone, MSG_SIMPLE_Q_TAG, code, count, 2930 SSD_FULL_SIZE, SPACE_TIMEOUT); 2931 2932 softc->dsreg = (count < 0)? MTIO_DSREG_REV : MTIO_DSREG_FWD; 2933 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 2934 softc->dsreg = MTIO_DSREG_REST; 2935 2936 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 2937 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 2938 2939 xpt_release_ccb(ccb); 2940 2941 /* 2942 * If a spacing operation has failed, we need to invalidate 2943 * this mount. 2944 * 2945 * If the spacing operation was setmarks or to end of recorded data, 2946 * we no longer know our relative position. 2947 * 2948 * We are not managing residuals here (really). 2949 */ 2950 if (error) { 2951 softc->fileno = softc->blkno = (daddr_t) -1; 2952 } else if (code == SS_SETMARKS || code == SS_EOD) { 2953 softc->fileno = softc->blkno = (daddr_t) -1; 2954 } else if (code == SS_FILEMARKS && softc->fileno != (daddr_t) -1) { 2955 softc->fileno += count; 2956 softc->blkno = 0; 2957 } else if (code == SS_BLOCKS && softc->blkno != (daddr_t) -1) { 2958 softc->blkno += count; 2959 } 2960 return (error); 2961 } 2962 2963 static int 2964 sawritefilemarks(struct cam_periph *periph, int nmarks, int setmarks) 2965 { 2966 union ccb *ccb; 2967 struct sa_softc *softc; 2968 int error; 2969 2970 softc = (struct sa_softc *)periph->softc; 2971 2972 ccb = cam_periph_getccb(periph, 1); 2973 2974 softc->dsreg = MTIO_DSREG_FMK; 2975 /* this *must* not be retried */ 2976 scsi_write_filemarks(&ccb->csio, 0, sadone, MSG_SIMPLE_Q_TAG, 2977 FALSE, setmarks, nmarks, SSD_FULL_SIZE, 60000); 2978 softc->dsreg = MTIO_DSREG_REST; 2979 2980 2981 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 2982 2983 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 2984 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 2985 2986 /* 2987 * XXXX: Get back the actual number of filemarks written 2988 * XXXX: (there can be a residual). 2989 */ 2990 if (error == 0 && nmarks) { 2991 struct sa_softc *softc = (struct sa_softc *)periph->softc; 2992 softc->filemarks += nmarks; 2993 } 2994 xpt_release_ccb(ccb); 2995 2996 /* 2997 * Update relative positions (if we're doing that). 2998 */ 2999 if (error) { 3000 softc->fileno = softc->blkno = (daddr_t) -1; 3001 } else if (softc->fileno != (daddr_t) -1) { 3002 softc->fileno += nmarks; 3003 softc->blkno = 0; 3004 } 3005 return (error); 3006 } 3007 3008 static int 3009 sardpos(struct cam_periph *periph, int hard, u_int32_t *blkptr) 3010 { 3011 struct scsi_tape_position_data loc; 3012 union ccb *ccb; 3013 struct sa_softc *softc = (struct sa_softc *)periph->softc; 3014 int error; 3015 3016 /* 3017 * We have to try and flush any buffered writes here if we were writing. 3018 * 3019 * The SCSI specification is vague enough about situations like 3020 * different sized blocks in a tape drive buffer as to make one 3021 * wary about trying to figure out the actual block location value 3022 * if data is in the tape drive buffer. 3023 */ 3024 ccb = cam_periph_getccb(periph, 1); 3025 3026 if (softc->flags & SA_FLAG_TAPE_WRITTEN) { 3027 error = sawritefilemarks(periph, 0, 0); 3028 if (error && error != EACCES) 3029 return (error); 3030 } 3031 3032 scsi_read_position(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, 3033 hard, &loc, SSD_FULL_SIZE, 5000); 3034 softc->dsreg = MTIO_DSREG_RBSY; 3035 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 3036 softc->dsreg = MTIO_DSREG_REST; 3037 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3038 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, 0); 3039 3040 if (error == 0) { 3041 if (loc.flags & SA_RPOS_UNCERTAIN) { 3042 error = EINVAL; /* nothing is certain */ 3043 } else { 3044 #if 0 3045 u_int32_t firstblk, lastblk, nbufblk, nbufbyte; 3046 3047 firstblk = scsi_4btoul(loc.firstblk); 3048 lastblk = scsi_4btoul(loc.lastblk); 3049 nbufblk = scsi_4btoul(loc.nbufblk); 3050 nbufbyte = scsi_4btoul(loc.nbufbyte); 3051 if (lastblk || nbufblk || nbufbyte) { 3052 xpt_print_path(periph->path); 3053 printf("rdpos firstblk 0x%x lastblk 0x%x bufblk" 3054 " 0x%x bufbyte 0x%x\n", firstblk, lastblk, 3055 nbufblk, nbufbyte); 3056 } 3057 *blkptr = firstblk; 3058 #else 3059 *blkptr = scsi_4btoul(loc.firstblk); 3060 #endif 3061 } 3062 } 3063 3064 xpt_release_ccb(ccb); 3065 return (error); 3066 } 3067 3068 static int 3069 sasetpos(struct cam_periph *periph, int hard, u_int32_t *blkptr) 3070 { 3071 union ccb *ccb; 3072 struct sa_softc *softc; 3073 int error; 3074 3075 /* 3076 * We used to try and flush any buffered writes here. 3077 * Now we push this onto user applications to either 3078 * flush the pending writes themselves (via a zero count 3079 * WRITE FILEMARKS command) or they can trust their tape 3080 * drive to do this correctly for them. 3081 */ 3082 3083 softc = (struct sa_softc *)periph->softc; 3084 ccb = cam_periph_getccb(periph, 1); 3085 3086 3087 scsi_set_position(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, 3088 hard, *blkptr, SSD_FULL_SIZE, 60 * 60 * 1000); 3089 3090 softc->dsreg = MTIO_DSREG_POS; 3091 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 3092 softc->dsreg = MTIO_DSREG_REST; 3093 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3094 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, 0); 3095 xpt_release_ccb(ccb); 3096 /* 3097 * Note relative file && block number position as now unknown. 3098 */ 3099 softc->fileno = softc->blkno = (daddr_t) -1; 3100 return (error); 3101 } 3102 3103 static int 3104 saretension(struct cam_periph *periph) 3105 { 3106 union ccb *ccb; 3107 struct sa_softc *softc; 3108 int error; 3109 3110 softc = (struct sa_softc *)periph->softc; 3111 3112 ccb = cam_periph_getccb(periph, 1); 3113 3114 /* It is safe to retry this operation */ 3115 scsi_load_unload(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 3116 FALSE, TRUE, TRUE, SSD_FULL_SIZE, ERASE_TIMEOUT); 3117 3118 softc->dsreg = MTIO_DSREG_TEN; 3119 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 3120 softc->dsreg = MTIO_DSREG_REST; 3121 3122 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3123 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 3124 xpt_release_ccb(ccb); 3125 if (error == 0) 3126 softc->fileno = softc->blkno = (daddr_t) 0; 3127 else 3128 softc->fileno = softc->blkno = (daddr_t) -1; 3129 return (error); 3130 } 3131 3132 static int 3133 sareservereleaseunit(struct cam_periph *periph, int reserve) 3134 { 3135 union ccb *ccb; 3136 struct sa_softc *softc; 3137 int error; 3138 3139 softc = (struct sa_softc *)periph->softc; 3140 ccb = cam_periph_getccb(periph, 1); 3141 3142 /* It is safe to retry this operation */ 3143 scsi_reserve_release_unit(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, 3144 FALSE, 0, SSD_FULL_SIZE, 5000, reserve); 3145 softc->dsreg = MTIO_DSREG_RBSY; 3146 error = cam_periph_runccb(ccb, saerror, 0, 3147 SF_RETRY_UA | SF_NO_PRINT, &softc->device_stats); 3148 softc->dsreg = MTIO_DSREG_REST; 3149 QFRLS(ccb); 3150 xpt_release_ccb(ccb); 3151 3152 /* 3153 * If the error was Illegal Request, then the device doesn't support 3154 * RESERVE/RELEASE. This is not an error. 3155 */ 3156 if (error == EINVAL) { 3157 error = 0; 3158 } 3159 3160 return (error); 3161 } 3162 3163 static int 3164 saloadunload(struct cam_periph *periph, int load) 3165 { 3166 union ccb *ccb; 3167 struct sa_softc *softc; 3168 int error; 3169 3170 softc = (struct sa_softc *)periph->softc; 3171 3172 ccb = cam_periph_getccb(periph, 1); 3173 3174 /* It is safe to retry this operation */ 3175 scsi_load_unload(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 3176 FALSE, FALSE, load, SSD_FULL_SIZE, REWIND_TIMEOUT); 3177 3178 softc->dsreg = (load)? MTIO_DSREG_LD : MTIO_DSREG_UNL; 3179 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 3180 softc->dsreg = MTIO_DSREG_REST; 3181 QFRLS(ccb); 3182 xpt_release_ccb(ccb); 3183 3184 if (error || load == 0) 3185 softc->fileno = softc->blkno = (daddr_t) -1; 3186 else if (error == 0) 3187 softc->fileno = softc->blkno = (daddr_t) 0; 3188 return (error); 3189 } 3190 3191 static int 3192 saerase(struct cam_periph *periph, int longerase) 3193 { 3194 3195 union ccb *ccb; 3196 struct sa_softc *softc; 3197 int error; 3198 3199 softc = (struct sa_softc *)periph->softc; 3200 3201 ccb = cam_periph_getccb(periph, 1); 3202 3203 scsi_erase(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, FALSE, longerase, 3204 SSD_FULL_SIZE, ERASE_TIMEOUT); 3205 3206 softc->dsreg = MTIO_DSREG_ZER; 3207 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 3208 softc->dsreg = MTIO_DSREG_REST; 3209 3210 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3211 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 3212 xpt_release_ccb(ccb); 3213 return (error); 3214 } 3215 3216 #endif /* _KERNEL */ 3217 3218 /* 3219 * Read tape block limits command. 3220 */ 3221 void 3222 scsi_read_block_limits(struct ccb_scsiio *csio, u_int32_t retries, 3223 void (*cbfcnp)(struct cam_periph *, union ccb *), 3224 u_int8_t tag_action, 3225 struct scsi_read_block_limits_data *rlimit_buf, 3226 u_int8_t sense_len, u_int32_t timeout) 3227 { 3228 struct scsi_read_block_limits *scsi_cmd; 3229 3230 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_IN, tag_action, 3231 (u_int8_t *)rlimit_buf, sizeof(*rlimit_buf), sense_len, 3232 sizeof(*scsi_cmd), timeout); 3233 3234 scsi_cmd = (struct scsi_read_block_limits *)&csio->cdb_io.cdb_bytes; 3235 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3236 scsi_cmd->opcode = READ_BLOCK_LIMITS; 3237 } 3238 3239 void 3240 scsi_sa_read_write(struct ccb_scsiio *csio, u_int32_t retries, 3241 void (*cbfcnp)(struct cam_periph *, union ccb *), 3242 u_int8_t tag_action, int readop, int sli, 3243 int fixed, u_int32_t length, u_int8_t *data_ptr, 3244 u_int32_t dxfer_len, u_int8_t sense_len, u_int32_t timeout) 3245 { 3246 struct scsi_sa_rw *scsi_cmd; 3247 3248 scsi_cmd = (struct scsi_sa_rw *)&csio->cdb_io.cdb_bytes; 3249 scsi_cmd->opcode = readop ? SA_READ : SA_WRITE; 3250 scsi_cmd->sli_fixed = 0; 3251 if (sli && readop) 3252 scsi_cmd->sli_fixed |= SAR_SLI; 3253 if (fixed) 3254 scsi_cmd->sli_fixed |= SARW_FIXED; 3255 scsi_ulto3b(length, scsi_cmd->length); 3256 scsi_cmd->control = 0; 3257 3258 cam_fill_csio(csio, retries, cbfcnp, readop ? CAM_DIR_IN : CAM_DIR_OUT, 3259 tag_action, data_ptr, dxfer_len, sense_len, 3260 sizeof(*scsi_cmd), timeout); 3261 } 3262 3263 void 3264 scsi_load_unload(struct ccb_scsiio *csio, u_int32_t retries, 3265 void (*cbfcnp)(struct cam_periph *, union ccb *), 3266 u_int8_t tag_action, int immediate, int eot, 3267 int reten, int load, u_int8_t sense_len, 3268 u_int32_t timeout) 3269 { 3270 struct scsi_load_unload *scsi_cmd; 3271 3272 scsi_cmd = (struct scsi_load_unload *)&csio->cdb_io.cdb_bytes; 3273 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3274 scsi_cmd->opcode = LOAD_UNLOAD; 3275 if (immediate) 3276 scsi_cmd->immediate = SLU_IMMED; 3277 if (eot) 3278 scsi_cmd->eot_reten_load |= SLU_EOT; 3279 if (reten) 3280 scsi_cmd->eot_reten_load |= SLU_RETEN; 3281 if (load) 3282 scsi_cmd->eot_reten_load |= SLU_LOAD; 3283 3284 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, 3285 NULL, 0, sense_len, sizeof(*scsi_cmd), timeout); 3286 } 3287 3288 void 3289 scsi_rewind(struct ccb_scsiio *csio, u_int32_t retries, 3290 void (*cbfcnp)(struct cam_periph *, union ccb *), 3291 u_int8_t tag_action, int immediate, u_int8_t sense_len, 3292 u_int32_t timeout) 3293 { 3294 struct scsi_rewind *scsi_cmd; 3295 3296 scsi_cmd = (struct scsi_rewind *)&csio->cdb_io.cdb_bytes; 3297 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3298 scsi_cmd->opcode = REWIND; 3299 if (immediate) 3300 scsi_cmd->immediate = SREW_IMMED; 3301 3302 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3303 0, sense_len, sizeof(*scsi_cmd), timeout); 3304 } 3305 3306 void 3307 scsi_space(struct ccb_scsiio *csio, u_int32_t retries, 3308 void (*cbfcnp)(struct cam_periph *, union ccb *), 3309 u_int8_t tag_action, scsi_space_code code, 3310 u_int32_t count, u_int8_t sense_len, u_int32_t timeout) 3311 { 3312 struct scsi_space *scsi_cmd; 3313 3314 scsi_cmd = (struct scsi_space *)&csio->cdb_io.cdb_bytes; 3315 scsi_cmd->opcode = SPACE; 3316 scsi_cmd->code = code; 3317 scsi_ulto3b(count, scsi_cmd->count); 3318 scsi_cmd->control = 0; 3319 3320 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3321 0, sense_len, sizeof(*scsi_cmd), timeout); 3322 } 3323 3324 void 3325 scsi_write_filemarks(struct ccb_scsiio *csio, u_int32_t retries, 3326 void (*cbfcnp)(struct cam_periph *, union ccb *), 3327 u_int8_t tag_action, int immediate, int setmark, 3328 u_int32_t num_marks, u_int8_t sense_len, 3329 u_int32_t timeout) 3330 { 3331 struct scsi_write_filemarks *scsi_cmd; 3332 3333 scsi_cmd = (struct scsi_write_filemarks *)&csio->cdb_io.cdb_bytes; 3334 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3335 scsi_cmd->opcode = WRITE_FILEMARKS; 3336 if (immediate) 3337 scsi_cmd->byte2 |= SWFMRK_IMMED; 3338 if (setmark) 3339 scsi_cmd->byte2 |= SWFMRK_WSMK; 3340 3341 scsi_ulto3b(num_marks, scsi_cmd->num_marks); 3342 3343 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3344 0, sense_len, sizeof(*scsi_cmd), timeout); 3345 } 3346 3347 /* 3348 * The reserve and release unit commands differ only by their opcodes. 3349 */ 3350 void 3351 scsi_reserve_release_unit(struct ccb_scsiio *csio, u_int32_t retries, 3352 void (*cbfcnp)(struct cam_periph *, union ccb *), 3353 u_int8_t tag_action, int third_party, 3354 int third_party_id, u_int8_t sense_len, 3355 u_int32_t timeout, int reserve) 3356 { 3357 struct scsi_reserve_release_unit *scsi_cmd; 3358 3359 scsi_cmd = (struct scsi_reserve_release_unit *)&csio->cdb_io.cdb_bytes; 3360 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3361 3362 if (reserve) 3363 scsi_cmd->opcode = RESERVE_UNIT; 3364 else 3365 scsi_cmd->opcode = RELEASE_UNIT; 3366 3367 if (third_party) { 3368 scsi_cmd->lun_thirdparty |= SRRU_3RD_PARTY; 3369 scsi_cmd->lun_thirdparty |= 3370 ((third_party_id << SRRU_3RD_SHAMT) & SRRU_3RD_MASK); 3371 } 3372 3373 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3374 0, sense_len, sizeof(*scsi_cmd), timeout); 3375 } 3376 3377 void 3378 scsi_erase(struct ccb_scsiio *csio, u_int32_t retries, 3379 void (*cbfcnp)(struct cam_periph *, union ccb *), 3380 u_int8_t tag_action, int immediate, int long_erase, 3381 u_int8_t sense_len, u_int32_t timeout) 3382 { 3383 struct scsi_erase *scsi_cmd; 3384 3385 scsi_cmd = (struct scsi_erase *)&csio->cdb_io.cdb_bytes; 3386 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3387 3388 scsi_cmd->opcode = ERASE; 3389 3390 if (immediate) 3391 scsi_cmd->lun_imm_long |= SE_IMMED; 3392 3393 if (long_erase) 3394 scsi_cmd->lun_imm_long |= SE_LONG; 3395 3396 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3397 0, sense_len, sizeof(*scsi_cmd), timeout); 3398 } 3399 3400 /* 3401 * Read Tape Position command. 3402 */ 3403 void 3404 scsi_read_position(struct ccb_scsiio *csio, u_int32_t retries, 3405 void (*cbfcnp)(struct cam_periph *, union ccb *), 3406 u_int8_t tag_action, int hardsoft, 3407 struct scsi_tape_position_data *sbp, 3408 u_int8_t sense_len, u_int32_t timeout) 3409 { 3410 struct scsi_tape_read_position *scmd; 3411 3412 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_IN, tag_action, 3413 (u_int8_t *)sbp, sizeof (*sbp), sense_len, sizeof(*scmd), timeout); 3414 scmd = (struct scsi_tape_read_position *)&csio->cdb_io.cdb_bytes; 3415 bzero(scmd, sizeof(*scmd)); 3416 scmd->opcode = READ_POSITION; 3417 scmd->byte1 = hardsoft; 3418 } 3419 3420 /* 3421 * Set Tape Position command. 3422 */ 3423 void 3424 scsi_set_position(struct ccb_scsiio *csio, u_int32_t retries, 3425 void (*cbfcnp)(struct cam_periph *, union ccb *), 3426 u_int8_t tag_action, int hardsoft, u_int32_t blkno, 3427 u_int8_t sense_len, u_int32_t timeout) 3428 { 3429 struct scsi_tape_locate *scmd; 3430 3431 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, 3432 (u_int8_t *)NULL, 0, sense_len, sizeof(*scmd), timeout); 3433 scmd = (struct scsi_tape_locate *)&csio->cdb_io.cdb_bytes; 3434 bzero(scmd, sizeof(*scmd)); 3435 scmd->opcode = LOCATE; 3436 if (hardsoft) 3437 scmd->byte1 |= SA_SPOS_BT; 3438 scsi_ulto4b(blkno, scmd->blkaddr); 3439 } 3440