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/bio.h> 40 #include <sys/malloc.h> 41 #include <sys/mtio.h> 42 #ifdef _KERNEL 43 #include <sys/conf.h> 44 #endif 45 #include <sys/devicestat.h> 46 #include <machine/limits.h> 47 48 #ifndef _KERNEL 49 #include <stdio.h> 50 #include <string.h> 51 #endif 52 53 #include <cam/cam.h> 54 #include <cam/cam_ccb.h> 55 #include <cam/cam_extend.h> 56 #include <cam/cam_periph.h> 57 #include <cam/cam_xpt_periph.h> 58 #include <cam/cam_debug.h> 59 60 #include <cam/scsi/scsi_all.h> 61 #include <cam/scsi/scsi_message.h> 62 #include <cam/scsi/scsi_sa.h> 63 64 #ifdef _KERNEL 65 66 #include <opt_sa.h> 67 68 #ifndef SA_SPACE_TIMEOUT 69 #define SA_SPACE_TIMEOUT 1 * 60 70 #endif 71 #ifndef SA_REWIND_TIMEOUT 72 #define SA_REWIND_TIMEOUT 2 * 60 73 #endif 74 #ifndef SA_ERASE_TIMEOUT 75 #define SA_ERASE_TIMEOUT 4 * 60 76 #endif 77 78 #define REWIND_TIMEOUT (SA_REWIND_TIMEOUT * 60 * 1000) 79 #define ERASE_TIMEOUT (SA_ERASE_TIMEOUT * 60 * 1000) 80 #define SPACE_TIMEOUT (SA_SPACE_TIMEOUT * 60 * 1000) 81 82 /* 83 * Additional options that can be set for config: SA_1FM_AT_EOT 84 */ 85 86 #ifndef UNUSED_PARAMETER 87 #define UNUSED_PARAMETER(x) x = x 88 #endif 89 90 #define QFRLS(ccb) \ 91 if (((ccb)->ccb_h.status & CAM_DEV_QFRZN) != 0) \ 92 cam_release_devq((ccb)->ccb_h.path, 0, 0, 0, FALSE) 93 94 /* 95 * Driver states 96 */ 97 98 99 typedef enum { 100 SA_STATE_NORMAL, SA_STATE_ABNORMAL 101 } sa_state; 102 103 #define ccb_pflags ppriv_field0 104 #define ccb_bp ppriv_ptr1 105 106 #define SA_CCB_BUFFER_IO 0x0 107 #define SA_CCB_WAITING 0x1 108 #define SA_CCB_TYPEMASK 0x1 109 #define SA_POSITION_UPDATED 0x2 110 111 #define Set_CCB_Type(x, type) \ 112 x->ccb_h.ccb_pflags &= ~SA_CCB_TYPEMASK; \ 113 x->ccb_h.ccb_pflags |= type 114 115 #define CCB_Type(x) (x->ccb_h.ccb_pflags & SA_CCB_TYPEMASK) 116 117 118 119 typedef enum { 120 SA_FLAG_OPEN = 0x0001, 121 SA_FLAG_FIXED = 0x0002, 122 SA_FLAG_TAPE_LOCKED = 0x0004, 123 SA_FLAG_TAPE_MOUNTED = 0x0008, 124 SA_FLAG_TAPE_WP = 0x0010, 125 SA_FLAG_TAPE_WRITTEN = 0x0020, 126 SA_FLAG_EOM_PENDING = 0x0040, 127 SA_FLAG_EIO_PENDING = 0x0080, 128 SA_FLAG_EOF_PENDING = 0x0100, 129 SA_FLAG_ERR_PENDING = (SA_FLAG_EOM_PENDING|SA_FLAG_EIO_PENDING| 130 SA_FLAG_EOF_PENDING), 131 SA_FLAG_INVALID = 0x0200, 132 SA_FLAG_COMP_ENABLED = 0x0400, 133 SA_FLAG_COMP_SUPP = 0x0800, 134 SA_FLAG_COMP_UNSUPP = 0x1000, 135 SA_FLAG_TAPE_FROZEN = 0x2000 136 } sa_flags; 137 138 typedef enum { 139 SA_MODE_REWIND = 0x00, 140 SA_MODE_NOREWIND = 0x01, 141 SA_MODE_OFFLINE = 0x02 142 } sa_mode; 143 144 typedef enum { 145 SA_PARAM_NONE = 0x00, 146 SA_PARAM_BLOCKSIZE = 0x01, 147 SA_PARAM_DENSITY = 0x02, 148 SA_PARAM_COMPRESSION = 0x04, 149 SA_PARAM_BUFF_MODE = 0x08, 150 SA_PARAM_NUMBLOCKS = 0x10, 151 SA_PARAM_WP = 0x20, 152 SA_PARAM_SPEED = 0x40, 153 SA_PARAM_ALL = 0x7f 154 } sa_params; 155 156 typedef enum { 157 SA_QUIRK_NONE = 0x00, 158 SA_QUIRK_NOCOMP = 0x01, /* Can't deal with compression at all */ 159 SA_QUIRK_FIXED = 0x02, /* Force fixed mode */ 160 SA_QUIRK_VARIABLE = 0x04, /* Force variable mode */ 161 SA_QUIRK_2FM = 0x08, /* Needs Two File Marks at EOD */ 162 SA_QUIRK_1FM = 0x10, /* No more than 1 File Mark at EOD */ 163 SA_QUIRK_NODREAD = 0x20, /* Don't try and dummy read density */ 164 SA_QUIRK_NO_MODESEL = 0x40, /* Don't do mode select at all */ 165 SA_QUIRK_NO_CPAGE = 0x80 /* Don't use DEVICE COMPRESSION page */ 166 } sa_quirks; 167 168 /* units are bits 4-7, 16-21 (1024 units) */ 169 #define SAUNIT(DEV) \ 170 (((minor(DEV) & 0xF0) >> 4) | ((minor(DEV) & 0x3f0000) >> 16)) 171 172 #define SAMODE(z) ((minor(z) & 0x3)) 173 #define SADENSITY(z) (((minor(z) >> 2) & 0x3)) 174 #define SA_IS_CTRL(z) (minor(z) & (1 << 29)) 175 176 #define SA_NOT_CTLDEV 0 177 #define SA_CTLDEV 1 178 179 #define SA_ATYPE_R 0 180 #define SA_ATYPE_NR 1 181 #define SA_ATYPE_ER 2 182 183 #define SAMINOR(ctl, unit, mode, access) \ 184 ((ctl << 29) | ((unit & 0x3f0) << 16) | ((unit & 0xf) << 4) | \ 185 (mode << 0x2) | (access & 0x3)) 186 187 #define SA_NUM_MODES 4 188 struct sa_devs { 189 dev_t ctl_dev; 190 struct sa_mode_devs { 191 dev_t r_dev; 192 dev_t nr_dev; 193 dev_t er_dev; 194 } mode_devs[SA_NUM_MODES]; 195 }; 196 197 struct sa_softc { 198 sa_state state; 199 sa_flags flags; 200 sa_quirks quirks; 201 struct bio_queue_head bio_queue; 202 int queue_count; 203 struct devstat device_stats; 204 struct sa_devs devs; 205 int blk_gran; 206 int blk_mask; 207 int blk_shift; 208 u_int32_t max_blk; 209 u_int32_t min_blk; 210 u_int32_t comp_algorithm; 211 u_int32_t saved_comp_algorithm; 212 u_int32_t media_blksize; 213 u_int32_t last_media_blksize; 214 u_int32_t media_numblks; 215 u_int8_t media_density; 216 u_int8_t speed; 217 u_int8_t scsi_rev; 218 u_int8_t dsreg; /* mtio mt_dsreg, redux */ 219 int buffer_mode; 220 int filemarks; 221 union ccb saved_ccb; 222 int last_resid_was_io; 223 224 /* 225 * Relative to BOT Location. 226 */ 227 daddr_t fileno; 228 daddr_t blkno; 229 230 /* 231 * Latched Error Info 232 */ 233 struct { 234 struct scsi_sense_data _last_io_sense; 235 u_int32_t _last_io_resid; 236 u_int8_t _last_io_cdb[CAM_MAX_CDBLEN]; 237 struct scsi_sense_data _last_ctl_sense; 238 u_int32_t _last_ctl_resid; 239 u_int8_t _last_ctl_cdb[CAM_MAX_CDBLEN]; 240 #define last_io_sense errinfo._last_io_sense 241 #define last_io_resid errinfo._last_io_resid 242 #define last_io_cdb errinfo._last_io_cdb 243 #define last_ctl_sense errinfo._last_ctl_sense 244 #define last_ctl_resid errinfo._last_ctl_resid 245 #define last_ctl_cdb errinfo._last_ctl_cdb 246 } errinfo; 247 /* 248 * Misc other flags/state 249 */ 250 u_int32_t 251 : 31, 252 ctrl_mode : 1; /* control device open */ 253 }; 254 255 struct sa_quirk_entry { 256 struct scsi_inquiry_pattern inq_pat; /* matching pattern */ 257 sa_quirks quirks; /* specific quirk type */ 258 u_int32_t prefblk; /* preferred blocksize when in fixed mode */ 259 }; 260 261 static struct sa_quirk_entry sa_quirk_table[] = 262 { 263 { 264 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "OnStream", 265 "ADR*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_NODREAD | 266 SA_QUIRK_1FM|SA_QUIRK_NO_MODESEL, 32768 267 }, 268 { 269 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 270 "Python 06408*", "*"}, SA_QUIRK_NODREAD, 0 271 }, 272 { 273 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 274 "Python 25601*", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_NODREAD, 0 275 }, 276 { 277 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 278 "Python*", "*"}, SA_QUIRK_NODREAD, 0 279 }, 280 { 281 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 282 "VIPER 150*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 283 }, 284 { 285 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 286 "VIPER 2525 25462", "-011"}, 287 SA_QUIRK_NOCOMP|SA_QUIRK_1FM|SA_QUIRK_NODREAD, 0 288 }, 289 { 290 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 291 "VIPER 2525*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 1024 292 }, 293 #if 0 294 { 295 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 296 "C15*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_NO_CPAGE, 0, 297 }, 298 #endif 299 { 300 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 301 "T20*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 302 }, 303 { 304 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 305 "T4000*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 306 }, 307 { 308 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 309 "HP-88780*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 310 }, 311 { 312 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "KENNEDY", 313 "*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 314 }, 315 { 316 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "M4 DATA", 317 "123107 SCSI*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 318 }, 319 { /* jreynold@primenet.com */ 320 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "Seagate", 321 "STT8000N*", "*"}, SA_QUIRK_1FM, 0 322 }, 323 { /* mike@sentex.net */ 324 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "Seagate", 325 "STT20000*", "*"}, SA_QUIRK_1FM, 0 326 }, 327 { 328 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 329 " TDC 3600", "U07:"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 330 }, 331 { 332 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 333 " TDC 3800", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 334 }, 335 { 336 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 337 " TDC 4100", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 338 }, 339 { 340 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 341 " TDC 4200", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 342 }, 343 { 344 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 345 " SLR*", "*"}, SA_QUIRK_1FM, 0 346 }, 347 { 348 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "WANGTEK", 349 "5525ES*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 350 }, 351 { 352 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "WANGTEK", 353 "51000*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 1024 354 } 355 }; 356 357 static d_open_t saopen; 358 static d_close_t saclose; 359 static d_strategy_t sastrategy; 360 static d_ioctl_t saioctl; 361 static periph_init_t sainit; 362 static periph_ctor_t saregister; 363 static periph_oninv_t saoninvalidate; 364 static periph_dtor_t sacleanup; 365 static periph_start_t sastart; 366 static void saasync(void *callback_arg, u_int32_t code, 367 struct cam_path *path, void *arg); 368 static void sadone(struct cam_periph *periph, 369 union ccb *start_ccb); 370 static int saerror(union ccb *ccb, u_int32_t cam_flags, 371 u_int32_t sense_flags); 372 static int samarkswanted(struct cam_periph *); 373 static int sacheckeod(struct cam_periph *periph); 374 static int sagetparams(struct cam_periph *periph, 375 sa_params params_to_get, 376 u_int32_t *blocksize, u_int8_t *density, 377 u_int32_t *numblocks, int *buff_mode, 378 u_int8_t *write_protect, u_int8_t *speed, 379 int *comp_supported, int *comp_enabled, 380 u_int32_t *comp_algorithm, 381 sa_comp_t *comp_page); 382 static int sasetparams(struct cam_periph *periph, 383 sa_params params_to_set, 384 u_int32_t blocksize, u_int8_t density, 385 u_int32_t comp_algorithm, 386 u_int32_t sense_flags); 387 static void saprevent(struct cam_periph *periph, int action); 388 static int sarewind(struct cam_periph *periph); 389 static int saspace(struct cam_periph *periph, int count, 390 scsi_space_code code); 391 static int samount(struct cam_periph *, int, dev_t); 392 static int saretension(struct cam_periph *periph); 393 static int sareservereleaseunit(struct cam_periph *periph, 394 int reserve); 395 static int saloadunload(struct cam_periph *periph, int load); 396 static int saerase(struct cam_periph *periph, int longerase); 397 static int sawritefilemarks(struct cam_periph *periph, 398 int nmarks, int setmarks); 399 static int sardpos(struct cam_periph *periph, int, u_int32_t *); 400 static int sasetpos(struct cam_periph *periph, int, u_int32_t *); 401 402 403 static struct periph_driver sadriver = 404 { 405 sainit, "sa", 406 TAILQ_HEAD_INITIALIZER(sadriver.units), /* generation */ 0 407 }; 408 409 PERIPHDRIVER_DECLARE(sa, sadriver); 410 411 /* For 2.2-stable support */ 412 #ifndef D_TAPE 413 #define D_TAPE 0 414 #endif 415 416 #define SA_CDEV_MAJOR 14 417 418 static struct cdevsw sa_cdevsw = { 419 /* open */ saopen, 420 /* close */ saclose, 421 /* read */ physread, 422 /* write */ physwrite, 423 /* ioctl */ saioctl, 424 /* poll */ nopoll, 425 /* mmap */ nommap, 426 /* strategy */ sastrategy, 427 /* name */ "sa", 428 /* maj */ SA_CDEV_MAJOR, 429 /* dump */ nodump, 430 /* psize */ nopsize, 431 /* flags */ D_TAPE, 432 }; 433 434 static struct extend_array *saperiphs; 435 436 static int 437 saopen(dev_t dev, int flags, int fmt, struct proc *p) 438 { 439 struct cam_periph *periph; 440 struct sa_softc *softc; 441 int unit; 442 int mode; 443 int density; 444 int error; 445 int s; 446 447 unit = SAUNIT(dev); 448 mode = SAMODE(dev); 449 density = SADENSITY(dev); 450 451 s = splsoftcam(); 452 periph = cam_extend_get(saperiphs, unit); 453 if (periph == NULL) { 454 (void) splx(s); 455 return (ENXIO); 456 } 457 softc = (struct sa_softc *)periph->softc; 458 if ((error = cam_periph_lock(periph, PRIBIO|PCATCH)) != 0) { 459 splx(s); 460 return (error); 461 } 462 splx(s); 463 464 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE|CAM_DEBUG_INFO, 465 ("saopen(%d): dev=0x%x softc=0x%x\n", unit, unit, softc->flags)); 466 467 if (cam_periph_acquire(periph) != CAM_REQ_CMP) { 468 cam_periph_unlock(periph); 469 return (ENXIO); 470 } 471 if (SA_IS_CTRL(dev)) { 472 softc->ctrl_mode = 1; 473 cam_periph_unlock(periph); 474 return (0); 475 } 476 477 478 if (softc->flags & SA_FLAG_OPEN) { 479 error = EBUSY; 480 } else if (softc->flags & SA_FLAG_INVALID) { 481 error = ENXIO; 482 } else { 483 /* 484 * The function samount ensures media is loaded and ready. 485 * It also does a device RESERVE if the tape isn't yet mounted. 486 */ 487 error = samount(periph, flags, dev); 488 } 489 490 if (error) { 491 cam_periph_release(periph); 492 } else { 493 saprevent(periph, PR_PREVENT); 494 softc->flags |= SA_FLAG_OPEN; 495 } 496 cam_periph_unlock(periph); 497 return (error); 498 } 499 500 static int 501 saclose(dev_t dev, int flag, int fmt, struct proc *p) 502 { 503 struct cam_periph *periph; 504 struct sa_softc *softc; 505 int unit, mode, error, writing, tmp; 506 int closedbits = SA_FLAG_OPEN; 507 508 unit = SAUNIT(dev); 509 mode = SAMODE(dev); 510 periph = cam_extend_get(saperiphs, unit); 511 if (periph == NULL) 512 return (ENXIO); 513 514 softc = (struct sa_softc *)periph->softc; 515 516 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE|CAM_DEBUG_INFO, 517 ("saclose(%d): dev=0x%x softc=0x%x\n", unit, unit, softc->flags)); 518 519 520 if ((error = cam_periph_lock(periph, PRIBIO)) != 0) { 521 return (error); 522 } 523 524 if (SA_IS_CTRL(dev)) { 525 softc->ctrl_mode = 0; 526 cam_periph_release(periph); 527 cam_periph_unlock(periph); 528 return (0); 529 } 530 531 /* 532 * Were we writing the tape? 533 */ 534 writing = (softc->flags & SA_FLAG_TAPE_WRITTEN) != 0; 535 536 /* 537 * See whether or not we need to write filemarks. If this 538 * fails, we probably have to assume we've lost tape 539 * position. 540 */ 541 error = sacheckeod(periph); 542 if (error) { 543 xpt_print_path(periph->path); 544 printf("failed to write terminating filemark(s)\n"); 545 softc->flags |= SA_FLAG_TAPE_FROZEN; 546 } 547 548 /* 549 * Whatever we end up doing, allow users to eject tapes from here on. 550 */ 551 saprevent(periph, PR_ALLOW); 552 553 /* 554 * Decide how to end... 555 */ 556 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) { 557 closedbits |= SA_FLAG_TAPE_FROZEN; 558 } else switch (mode) { 559 case SA_MODE_OFFLINE: 560 /* 561 * An 'offline' close is an unconditional release of 562 * frozen && mount conditions, irrespective of whether 563 * these operations succeeded. The reason for this is 564 * to allow at least some kind of programmatic way 565 * around our state getting all fouled up. If somebody 566 * issues an 'offline' command, that will be allowed 567 * to clear state. 568 */ 569 (void) sarewind(periph); 570 (void) saloadunload(periph, FALSE); 571 closedbits |= SA_FLAG_TAPE_MOUNTED|SA_FLAG_TAPE_FROZEN; 572 break; 573 case SA_MODE_REWIND: 574 /* 575 * If the rewind fails, return an error- if anyone cares, 576 * but not overwriting any previous error. 577 * 578 * We don't clear the notion of mounted here, but we do 579 * clear the notion of frozen if we successfully rewound. 580 */ 581 tmp = sarewind(periph); 582 if (tmp) { 583 if (error != 0) 584 error = tmp; 585 } else { 586 closedbits |= SA_FLAG_TAPE_FROZEN; 587 } 588 break; 589 case SA_MODE_NOREWIND: 590 /* 591 * If we're not rewinding/unloading the tape, find out 592 * whether we need to back up over one of two filemarks 593 * we wrote (if we wrote two filemarks) so that appends 594 * from this point on will be sane. 595 */ 596 if (error == 0 && writing && (softc->quirks & SA_QUIRK_2FM)) { 597 tmp = saspace(periph, -1, SS_FILEMARKS); 598 if (tmp) { 599 xpt_print_path(periph->path); 600 printf("unable to backspace over one of double" 601 " filemarks at end of tape\n"); 602 xpt_print_path(periph->path); 603 printf("it is possible that this device" 604 " needs a SA_QUIRK_1FM quirk set for it\n"); 605 softc->flags |= SA_FLAG_TAPE_FROZEN; 606 } 607 } 608 break; 609 default: 610 xpt_print_path(periph->path); 611 panic("unknown mode 0x%x in saclose\n", mode); 612 /* NOTREACHED */ 613 break; 614 } 615 616 /* 617 * We wish to note here that there are no more filemarks to be written. 618 */ 619 softc->filemarks = 0; 620 softc->flags &= ~SA_FLAG_TAPE_WRITTEN; 621 622 /* 623 * And we are no longer open for business. 624 */ 625 softc->flags &= ~closedbits; 626 627 /* 628 * Inform users if tape state if frozen.... 629 */ 630 if (softc->flags & SA_FLAG_TAPE_FROZEN) { 631 xpt_print_path(periph->path); 632 printf("tape is now frozen- use an OFFLINE, REWIND or MTEOM " 633 "command to clear this state.\n"); 634 } 635 636 /* release the device if it is no longer mounted */ 637 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) 638 sareservereleaseunit(periph, FALSE); 639 640 cam_periph_unlock(periph); 641 cam_periph_release(periph); 642 643 return (error); 644 } 645 646 /* 647 * Actually translate the requested transfer into one the physical driver 648 * can understand. The transfer is described by a buf and will include 649 * only one physical transfer. 650 */ 651 static void 652 sastrategy(struct bio *bp) 653 { 654 struct cam_periph *periph; 655 struct sa_softc *softc; 656 u_int unit; 657 int s; 658 659 bp->bio_resid = bp->bio_bcount; 660 if (SA_IS_CTRL(bp->bio_dev)) { 661 biofinish(bp, NULL, EINVAL); 662 return; 663 } 664 unit = SAUNIT(bp->bio_dev); 665 periph = cam_extend_get(saperiphs, unit); 666 if (periph == NULL) { 667 biofinish(bp, NULL, ENXIO); 668 return; 669 } 670 softc = (struct sa_softc *)periph->softc; 671 672 s = splsoftcam(); 673 674 if (softc->flags & SA_FLAG_INVALID) { 675 splx(s); 676 biofinish(bp, NULL, ENXIO); 677 return; 678 } 679 680 if (softc->flags & SA_FLAG_TAPE_FROZEN) { 681 splx(s); 682 biofinish(bp, NULL, EPERM); 683 return; 684 } 685 686 splx(s); 687 688 /* 689 * If it's a null transfer, return immediatly 690 */ 691 if (bp->bio_bcount == 0) { 692 biodone(bp); 693 return; 694 } 695 696 /* valid request? */ 697 if (softc->flags & SA_FLAG_FIXED) { 698 /* 699 * Fixed block device. The byte count must 700 * be a multiple of our block size. 701 */ 702 if (((softc->blk_mask != ~0) && 703 ((bp->bio_bcount & softc->blk_mask) != 0)) || 704 ((softc->blk_mask == ~0) && 705 ((bp->bio_bcount % softc->min_blk) != 0))) { 706 xpt_print_path(periph->path); 707 printf("Invalid request. Fixed block device " 708 "requests must be a multiple " 709 "of %d bytes\n", softc->min_blk); 710 biofinish(bp, NULL, EINVAL); 711 return; 712 } 713 } else if ((bp->bio_bcount > softc->max_blk) || 714 (bp->bio_bcount < softc->min_blk) || 715 (bp->bio_bcount & softc->blk_mask) != 0) { 716 717 xpt_print_path(periph->path); 718 printf("Invalid request. Variable block device " 719 "requests must be "); 720 if (softc->blk_mask != 0) { 721 printf("a multiple of %d ", (0x1 << softc->blk_gran)); 722 } 723 printf("between %d and %d bytes\n", softc->min_blk, 724 softc->max_blk); 725 biofinish(bp, NULL, EINVAL); 726 return; 727 } 728 729 /* 730 * Mask interrupts so that the device cannot be invalidated until 731 * after we are in the queue. Otherwise, we might not properly 732 * clean up one of the buffers. 733 */ 734 s = splbio(); 735 736 /* 737 * Place it at the end of the queue. 738 */ 739 bioq_insert_tail(&softc->bio_queue, bp); 740 741 softc->queue_count++; 742 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("sastrategy: enqueuing a %d " 743 "%s byte %s queue count now %d\n", (int) bp->bio_bcount, 744 (softc->flags & SA_FLAG_FIXED)? "fixed" : "variable", 745 (bp->bio_cmd == BIO_READ)? "read" : "write", softc->queue_count)); 746 747 splx(s); 748 749 /* 750 * Schedule ourselves for performing the work. 751 */ 752 xpt_schedule(periph, 1); 753 754 return; 755 } 756 757 static int 758 saioctl(dev_t dev, u_long cmd, caddr_t arg, int flag, struct proc *p) 759 { 760 struct cam_periph *periph; 761 struct sa_softc *softc; 762 scsi_space_code spaceop; 763 int didlockperiph = 0; 764 int s; 765 int unit; 766 int mode; 767 int density; 768 int error = 0; 769 770 unit = SAUNIT(dev); 771 mode = SAMODE(dev); 772 density = SADENSITY(dev); 773 error = 0; /* shut up gcc */ 774 spaceop = 0; /* shut up gcc */ 775 776 periph = cam_extend_get(saperiphs, unit); 777 if (periph == NULL) 778 return (ENXIO); 779 780 softc = (struct sa_softc *)periph->softc; 781 782 /* 783 * Check for control mode accesses. We allow MTIOCGET and 784 * MTIOCERRSTAT (but need to be the only one open in order 785 * to clear latched status), and MTSETBSIZE, MTSETDNSTY 786 * and MTCOMP (but need to be the only one accessing this 787 * device to run those). 788 */ 789 790 if (SA_IS_CTRL(dev)) { 791 switch (cmd) { 792 case MTIOCGETEOTMODEL: 793 case MTIOCGET: 794 break; 795 case MTIOCERRSTAT: 796 /* 797 * If the periph isn't already locked, lock it 798 * so our MTIOCERRSTAT can reset latched error stats. 799 * 800 * If the periph is already locked, skip it because 801 * we're just getting status and it'll be up to the 802 * other thread that has this device open to do 803 * an MTIOCERRSTAT that would clear latched status. 804 */ 805 s = splsoftcam(); 806 if ((periph->flags & CAM_PERIPH_LOCKED) == 0) { 807 error = cam_periph_lock(periph, PRIBIO|PCATCH); 808 if (error != 0) { 809 splx(s); 810 return (error); 811 } 812 didlockperiph = 1; 813 } 814 break; 815 816 case MTIOCSETEOTMODEL: 817 case MTSETBSIZ: 818 case MTSETDNSTY: 819 case MTCOMP: 820 /* 821 * We need to acquire the peripheral here rather 822 * than at open time because we are sharing writable 823 * access to data structures. 824 */ 825 s = splsoftcam(); 826 error = cam_periph_lock(periph, PRIBIO|PCATCH); 827 if (error != 0) { 828 splx(s); 829 return (error); 830 } 831 didlockperiph = 1; 832 break; 833 834 default: 835 return (EINVAL); 836 } 837 } 838 839 /* 840 * Find the device that the user is talking about 841 */ 842 switch (cmd) { 843 case MTIOCGET: 844 { 845 struct mtget *g = (struct mtget *)arg; 846 847 /* 848 * If this isn't the control mode device, actually go out 849 * and ask the drive again what it's set to. 850 */ 851 if (!SA_IS_CTRL(dev)) { 852 u_int8_t write_protect; 853 int comp_enabled, comp_supported; 854 error = sagetparams(periph, SA_PARAM_ALL, 855 &softc->media_blksize, &softc->media_density, 856 &softc->media_numblks, &softc->buffer_mode, 857 &write_protect, &softc->speed, &comp_supported, 858 &comp_enabled, &softc->comp_algorithm, NULL); 859 if (error) 860 break; 861 if (write_protect) 862 softc->flags |= SA_FLAG_TAPE_WP; 863 else 864 softc->flags &= ~SA_FLAG_TAPE_WP; 865 softc->flags &= ~(SA_FLAG_COMP_SUPP| 866 SA_FLAG_COMP_ENABLED|SA_FLAG_COMP_UNSUPP); 867 if (comp_supported) { 868 if (softc->saved_comp_algorithm == 0) 869 softc->saved_comp_algorithm = 870 softc->comp_algorithm; 871 softc->flags |= SA_FLAG_COMP_SUPP; 872 if (comp_enabled) 873 softc->flags |= SA_FLAG_COMP_ENABLED; 874 } else 875 softc->flags |= SA_FLAG_COMP_UNSUPP; 876 } 877 bzero(g, sizeof(struct mtget)); 878 g->mt_type = MT_ISAR; 879 if (softc->flags & SA_FLAG_COMP_UNSUPP) { 880 g->mt_comp = MT_COMP_UNSUPP; 881 g->mt_comp0 = MT_COMP_UNSUPP; 882 g->mt_comp1 = MT_COMP_UNSUPP; 883 g->mt_comp2 = MT_COMP_UNSUPP; 884 g->mt_comp3 = MT_COMP_UNSUPP; 885 } else { 886 if ((softc->flags & SA_FLAG_COMP_ENABLED) == 0) { 887 g->mt_comp = MT_COMP_DISABLED; 888 } else { 889 g->mt_comp = softc->comp_algorithm; 890 } 891 g->mt_comp0 = softc->comp_algorithm; 892 g->mt_comp1 = softc->comp_algorithm; 893 g->mt_comp2 = softc->comp_algorithm; 894 g->mt_comp3 = softc->comp_algorithm; 895 } 896 g->mt_density = softc->media_density; 897 g->mt_density0 = softc->media_density; 898 g->mt_density1 = softc->media_density; 899 g->mt_density2 = softc->media_density; 900 g->mt_density3 = softc->media_density; 901 g->mt_blksiz = softc->media_blksize; 902 g->mt_blksiz0 = softc->media_blksize; 903 g->mt_blksiz1 = softc->media_blksize; 904 g->mt_blksiz2 = softc->media_blksize; 905 g->mt_blksiz3 = softc->media_blksize; 906 g->mt_fileno = softc->fileno; 907 g->mt_blkno = softc->blkno; 908 g->mt_dsreg = (short) softc->dsreg; 909 /* 910 * Yes, we know that this is likely to overflow 911 */ 912 if (softc->last_resid_was_io) { 913 if ((g->mt_resid = (short) softc->last_io_resid) != 0) { 914 if (SA_IS_CTRL(dev) == 0 || didlockperiph) { 915 softc->last_io_resid = 0; 916 } 917 } 918 } else { 919 if ((g->mt_resid = (short)softc->last_ctl_resid) != 0) { 920 if (SA_IS_CTRL(dev) == 0 || didlockperiph) { 921 softc->last_ctl_resid = 0; 922 } 923 } 924 } 925 if (g->mt_resid) { 926 } 927 error = 0; 928 break; 929 } 930 case MTIOCERRSTAT: 931 { 932 struct scsi_tape_errors *sep = 933 &((union mterrstat *)arg)->scsi_errstat; 934 935 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, 936 ("saioctl: MTIOCERRSTAT\n")); 937 938 bzero(sep, sizeof(*sep)); 939 sep->io_resid = softc->last_io_resid; 940 bcopy((caddr_t) &softc->last_io_sense, sep->io_sense, 941 sizeof (sep->io_sense)); 942 bcopy((caddr_t) &softc->last_io_cdb, sep->io_cdb, 943 sizeof (sep->io_cdb)); 944 sep->ctl_resid = softc->last_ctl_resid; 945 bcopy((caddr_t) &softc->last_ctl_sense, sep->ctl_sense, 946 sizeof (sep->ctl_sense)); 947 bcopy((caddr_t) &softc->last_ctl_cdb, sep->ctl_cdb, 948 sizeof (sep->ctl_cdb)); 949 950 if (SA_IS_CTRL(dev) == 0 || didlockperiph) 951 bzero((caddr_t) &softc->errinfo, 952 sizeof (softc->errinfo)); 953 error = 0; 954 break; 955 } 956 case MTIOCTOP: 957 { 958 struct mtop *mt; 959 int count; 960 961 mt = (struct mtop *)arg; 962 963 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, 964 ("saioctl: op=0x%x count=0x%x\n", 965 mt->mt_op, mt->mt_count)); 966 967 count = mt->mt_count; 968 switch (mt->mt_op) { 969 case MTWEOF: /* write an end-of-file marker */ 970 /* 971 * We don't need to clear the SA_FLAG_TAPE_WRITTEN 972 * flag because by keeping track of filemarks 973 * we have last written we know ehether or not 974 * we need to write more when we close the device. 975 */ 976 error = sawritefilemarks(periph, count, FALSE); 977 break; 978 case MTWSS: /* write a setmark */ 979 error = sawritefilemarks(periph, count, TRUE); 980 break; 981 case MTBSR: /* backward space record */ 982 case MTFSR: /* forward space record */ 983 case MTBSF: /* backward space file */ 984 case MTFSF: /* forward space file */ 985 case MTBSS: /* backward space setmark */ 986 case MTFSS: /* forward space setmark */ 987 case MTEOD: /* space to end of recorded medium */ 988 { 989 int nmarks; 990 991 spaceop = SS_FILEMARKS; 992 nmarks = softc->filemarks; 993 error = sacheckeod(periph); 994 if (error) { 995 xpt_print_path(periph->path); 996 printf("EOD check prior to spacing failed\n"); 997 softc->flags |= SA_FLAG_EIO_PENDING; 998 break; 999 } 1000 nmarks -= softc->filemarks; 1001 switch(mt->mt_op) { 1002 case MTBSR: 1003 count = -count; 1004 /* FALLTHROUGH */ 1005 case MTFSR: 1006 spaceop = SS_BLOCKS; 1007 break; 1008 case MTBSF: 1009 count = -count; 1010 /* FALLTHROUGH */ 1011 case MTFSF: 1012 break; 1013 case MTBSS: 1014 count = -count; 1015 /* FALLTHROUGH */ 1016 case MTFSS: 1017 spaceop = SS_SETMARKS; 1018 break; 1019 case MTEOD: 1020 spaceop = SS_EOD; 1021 count = 0; 1022 nmarks = 0; 1023 break; 1024 default: 1025 error = EINVAL; 1026 break; 1027 } 1028 if (error) 1029 break; 1030 1031 nmarks = softc->filemarks; 1032 /* 1033 * XXX: Why are we checking again? 1034 */ 1035 error = sacheckeod(periph); 1036 if (error) 1037 break; 1038 nmarks -= softc->filemarks; 1039 error = saspace(periph, count - nmarks, spaceop); 1040 /* 1041 * At this point, clear that we've written the tape 1042 * and that we've written any filemarks. We really 1043 * don't know what the applications wishes to do next- 1044 * the sacheckeod's will make sure we terminated the 1045 * tape correctly if we'd been writing, but the next 1046 * action the user application takes will set again 1047 * whether we need to write filemarks. 1048 */ 1049 softc->flags &= 1050 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1051 softc->filemarks = 0; 1052 break; 1053 } 1054 case MTREW: /* rewind */ 1055 (void) sacheckeod(periph); 1056 error = sarewind(periph); 1057 /* see above */ 1058 softc->flags &= 1059 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1060 softc->filemarks = 0; 1061 break; 1062 case MTERASE: /* erase */ 1063 error = saerase(periph, count); 1064 softc->flags &= 1065 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1066 break; 1067 case MTRETENS: /* re-tension tape */ 1068 error = saretension(periph); 1069 softc->flags &= 1070 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1071 break; 1072 case MTOFFL: /* rewind and put the drive offline */ 1073 1074 (void) sacheckeod(periph); 1075 /* see above */ 1076 softc->flags &= ~SA_FLAG_TAPE_WRITTEN; 1077 softc->filemarks = 0; 1078 1079 error = sarewind(periph); 1080 /* clear the frozen flag anyway */ 1081 softc->flags &= ~SA_FLAG_TAPE_FROZEN; 1082 1083 /* 1084 * Be sure to allow media removal before ejecting. 1085 */ 1086 1087 saprevent(periph, PR_ALLOW); 1088 if (error == 0) { 1089 error = saloadunload(periph, FALSE); 1090 if (error == 0) { 1091 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 1092 } 1093 } 1094 break; 1095 1096 case MTNOP: /* no operation, sets status only */ 1097 case MTCACHE: /* enable controller cache */ 1098 case MTNOCACHE: /* disable controller cache */ 1099 error = 0; 1100 break; 1101 1102 case MTSETBSIZ: /* Set block size for device */ 1103 1104 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, count, 1105 0, 0, 0); 1106 if (error == 0) { 1107 softc->last_media_blksize = 1108 softc->media_blksize; 1109 softc->media_blksize = count; 1110 if (count) { 1111 softc->flags |= SA_FLAG_FIXED; 1112 if (powerof2(count)) { 1113 softc->blk_shift = 1114 ffs(count) - 1; 1115 softc->blk_mask = count - 1; 1116 } else { 1117 softc->blk_mask = ~0; 1118 softc->blk_shift = 0; 1119 } 1120 /* 1121 * Make the user's desire 'persistent'. 1122 */ 1123 softc->quirks &= ~SA_QUIRK_VARIABLE; 1124 softc->quirks |= SA_QUIRK_FIXED; 1125 } else { 1126 softc->flags &= ~SA_FLAG_FIXED; 1127 if (softc->max_blk == 0) { 1128 softc->max_blk = ~0; 1129 } 1130 softc->blk_shift = 0; 1131 if (softc->blk_gran != 0) { 1132 softc->blk_mask = 1133 softc->blk_gran - 1; 1134 } else { 1135 softc->blk_mask = 0; 1136 } 1137 /* 1138 * Make the user's desire 'persistent'. 1139 */ 1140 softc->quirks |= SA_QUIRK_VARIABLE; 1141 softc->quirks &= ~SA_QUIRK_FIXED; 1142 } 1143 } 1144 break; 1145 case MTSETDNSTY: /* Set density for device and mode */ 1146 if (count > UCHAR_MAX) { 1147 error = EINVAL; 1148 break; 1149 } else { 1150 error = sasetparams(periph, SA_PARAM_DENSITY, 1151 0, count, 0, 0); 1152 } 1153 break; 1154 case MTCOMP: /* enable compression */ 1155 /* 1156 * Some devices don't support compression, and 1157 * don't like it if you ask them for the 1158 * compression page. 1159 */ 1160 if ((softc->quirks & SA_QUIRK_NOCOMP) || 1161 (softc->flags & SA_FLAG_COMP_UNSUPP)) { 1162 error = ENODEV; 1163 break; 1164 } 1165 error = sasetparams(periph, SA_PARAM_COMPRESSION, 1166 0, 0, count, SF_NO_PRINT); 1167 break; 1168 default: 1169 error = EINVAL; 1170 } 1171 break; 1172 } 1173 case MTIOCIEOT: 1174 case MTIOCEEOT: 1175 error = 0; 1176 break; 1177 case MTIOCRDSPOS: 1178 error = sardpos(periph, 0, (u_int32_t *) arg); 1179 break; 1180 case MTIOCRDHPOS: 1181 error = sardpos(periph, 1, (u_int32_t *) arg); 1182 break; 1183 case MTIOCSLOCATE: 1184 error = sasetpos(periph, 0, (u_int32_t *) arg); 1185 break; 1186 case MTIOCHLOCATE: 1187 error = sasetpos(periph, 1, (u_int32_t *) arg); 1188 break; 1189 case MTIOCGETEOTMODEL: 1190 error = 0; 1191 if (softc->quirks & SA_QUIRK_1FM) 1192 mode = 1; 1193 else 1194 mode = 2; 1195 *((u_int32_t *) arg) = mode; 1196 break; 1197 case MTIOCSETEOTMODEL: 1198 error = 0; 1199 switch (*((u_int32_t *) arg)) { 1200 case 1: 1201 softc->quirks &= ~SA_QUIRK_2FM; 1202 softc->quirks |= SA_QUIRK_1FM; 1203 break; 1204 case 2: 1205 softc->quirks &= ~SA_QUIRK_1FM; 1206 softc->quirks |= SA_QUIRK_2FM; 1207 break; 1208 default: 1209 error = EINVAL; 1210 break; 1211 } 1212 break; 1213 default: 1214 error = cam_periph_ioctl(periph, cmd, arg, saerror); 1215 break; 1216 } 1217 1218 /* 1219 * Check to see if we cleared a frozen state 1220 */ 1221 if (error == 0 && (softc->flags & SA_FLAG_TAPE_FROZEN)) { 1222 switch(cmd) { 1223 case MTIOCRDSPOS: 1224 case MTIOCRDHPOS: 1225 case MTIOCSLOCATE: 1226 case MTIOCHLOCATE: 1227 softc->fileno = (daddr_t) -1; 1228 softc->blkno = (daddr_t) -1; 1229 softc->flags &= ~SA_FLAG_TAPE_FROZEN; 1230 xpt_print_path(periph->path); 1231 printf("tape state now unfrozen.\n"); 1232 break; 1233 default: 1234 break; 1235 } 1236 } 1237 if (didlockperiph) { 1238 cam_periph_unlock(periph); 1239 } 1240 return (error); 1241 } 1242 1243 static void 1244 sainit(void) 1245 { 1246 cam_status status; 1247 struct cam_path *path; 1248 1249 /* 1250 * Create our extend array for storing the devices we attach to. 1251 */ 1252 saperiphs = cam_extend_new(); 1253 if (saperiphs == NULL) { 1254 printf("sa: Failed to alloc extend array!\n"); 1255 return; 1256 } 1257 1258 /* 1259 * Install a global async callback. 1260 */ 1261 status = xpt_create_path(&path, NULL, CAM_XPT_PATH_ID, 1262 CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD); 1263 1264 if (status == CAM_REQ_CMP) { 1265 /* Register the async callbacks of interrest */ 1266 struct ccb_setasync csa; /* 1267 * This is an immediate CCB, 1268 * so using the stack is OK 1269 */ 1270 xpt_setup_ccb(&csa.ccb_h, path, 5); 1271 csa.ccb_h.func_code = XPT_SASYNC_CB; 1272 csa.event_enable = AC_FOUND_DEVICE; 1273 csa.callback = saasync; 1274 csa.callback_arg = NULL; 1275 xpt_action((union ccb *)&csa); 1276 status = csa.ccb_h.status; 1277 xpt_free_path(path); 1278 } 1279 1280 if (status != CAM_REQ_CMP) { 1281 printf("sa: Failed to attach master async callback " 1282 "due to status 0x%x!\n", status); 1283 } 1284 } 1285 1286 static void 1287 saoninvalidate(struct cam_periph *periph) 1288 { 1289 struct sa_softc *softc; 1290 struct bio *q_bp; 1291 struct ccb_setasync csa; 1292 int s; 1293 1294 softc = (struct sa_softc *)periph->softc; 1295 1296 /* 1297 * De-register any async callbacks. 1298 */ 1299 xpt_setup_ccb(&csa.ccb_h, periph->path, 1300 /* priority */ 5); 1301 csa.ccb_h.func_code = XPT_SASYNC_CB; 1302 csa.event_enable = 0; 1303 csa.callback = saasync; 1304 csa.callback_arg = periph; 1305 xpt_action((union ccb *)&csa); 1306 1307 softc->flags |= SA_FLAG_INVALID; 1308 1309 /* 1310 * Although the oninvalidate() routines are always called at 1311 * splsoftcam, we need to be at splbio() here to keep the buffer 1312 * queue from being modified while we traverse it. 1313 */ 1314 s = splbio(); 1315 1316 /* 1317 * Return all queued I/O with ENXIO. 1318 * XXX Handle any transactions queued to the card 1319 * with XPT_ABORT_CCB. 1320 */ 1321 while ((q_bp = bioq_first(&softc->bio_queue)) != NULL){ 1322 bioq_remove(&softc->bio_queue, q_bp); 1323 q_bp->bio_resid = q_bp->bio_bcount; 1324 biofinish(q_bp, NULL, ENXIO); 1325 } 1326 softc->queue_count = 0; 1327 splx(s); 1328 1329 xpt_print_path(periph->path); 1330 printf("lost device\n"); 1331 1332 } 1333 1334 static void 1335 sacleanup(struct cam_periph *periph) 1336 { 1337 struct sa_softc *softc; 1338 int i; 1339 1340 softc = (struct sa_softc *)periph->softc; 1341 1342 devstat_remove_entry(&softc->device_stats); 1343 1344 destroy_dev(softc->devs.ctl_dev); 1345 1346 for (i = 0; i < SA_NUM_MODES; i++) { 1347 destroy_dev(softc->devs.mode_devs[i].r_dev); 1348 destroy_dev(softc->devs.mode_devs[i].nr_dev); 1349 destroy_dev(softc->devs.mode_devs[i].er_dev); 1350 } 1351 1352 cam_extend_release(saperiphs, periph->unit_number); 1353 xpt_print_path(periph->path); 1354 printf("removing device entry\n"); 1355 free(softc, M_DEVBUF); 1356 } 1357 1358 static void 1359 saasync(void *callback_arg, u_int32_t code, 1360 struct cam_path *path, void *arg) 1361 { 1362 struct cam_periph *periph; 1363 1364 periph = (struct cam_periph *)callback_arg; 1365 switch (code) { 1366 case AC_FOUND_DEVICE: 1367 { 1368 struct ccb_getdev *cgd; 1369 cam_status status; 1370 1371 cgd = (struct ccb_getdev *)arg; 1372 1373 if (SID_TYPE(&cgd->inq_data) != T_SEQUENTIAL) 1374 break; 1375 1376 /* 1377 * Allocate a peripheral instance for 1378 * this device and start the probe 1379 * process. 1380 */ 1381 status = cam_periph_alloc(saregister, saoninvalidate, 1382 sacleanup, sastart, 1383 "sa", CAM_PERIPH_BIO, cgd->ccb_h.path, 1384 saasync, AC_FOUND_DEVICE, cgd); 1385 1386 if (status != CAM_REQ_CMP 1387 && status != CAM_REQ_INPROG) 1388 printf("saasync: Unable to probe new device " 1389 "due to status 0x%x\n", status); 1390 break; 1391 } 1392 default: 1393 cam_periph_async(periph, code, path, arg); 1394 break; 1395 } 1396 } 1397 1398 static cam_status 1399 saregister(struct cam_periph *periph, void *arg) 1400 { 1401 struct sa_softc *softc; 1402 struct ccb_setasync csa; 1403 struct ccb_getdev *cgd; 1404 caddr_t match; 1405 int i; 1406 1407 cgd = (struct ccb_getdev *)arg; 1408 if (periph == NULL) { 1409 printf("saregister: periph was NULL!!\n"); 1410 return (CAM_REQ_CMP_ERR); 1411 } 1412 1413 if (cgd == NULL) { 1414 printf("saregister: no getdev CCB, can't register device\n"); 1415 return (CAM_REQ_CMP_ERR); 1416 } 1417 1418 softc = (struct sa_softc *) 1419 malloc(sizeof (*softc), M_DEVBUF, M_NOWAIT | M_ZERO); 1420 if (softc == NULL) { 1421 printf("saregister: Unable to probe new device. " 1422 "Unable to allocate softc\n"); 1423 return (CAM_REQ_CMP_ERR); 1424 } 1425 softc->scsi_rev = SID_ANSI_REV(&cgd->inq_data); 1426 softc->state = SA_STATE_NORMAL; 1427 softc->fileno = (daddr_t) -1; 1428 softc->blkno = (daddr_t) -1; 1429 1430 bioq_init(&softc->bio_queue); 1431 periph->softc = softc; 1432 cam_extend_set(saperiphs, periph->unit_number, periph); 1433 1434 /* 1435 * See if this device has any quirks. 1436 */ 1437 match = cam_quirkmatch((caddr_t)&cgd->inq_data, 1438 (caddr_t)sa_quirk_table, 1439 sizeof(sa_quirk_table)/sizeof(*sa_quirk_table), 1440 sizeof(*sa_quirk_table), scsi_inquiry_match); 1441 1442 if (match != NULL) { 1443 softc->quirks = ((struct sa_quirk_entry *)match)->quirks; 1444 softc->last_media_blksize = 1445 ((struct sa_quirk_entry *)match)->prefblk; 1446 #ifdef CAMDEBUG 1447 xpt_print_path(periph->path); 1448 printf("found quirk entry %d\n", (int) 1449 (((struct sa_quirk_entry *) match) - sa_quirk_table)); 1450 #endif 1451 } else 1452 softc->quirks = SA_QUIRK_NONE; 1453 1454 /* 1455 * The SA driver supports a blocksize, but we don't know the 1456 * blocksize until we media is inserted. So, set a flag to 1457 * indicate that the blocksize is unavailable right now. 1458 */ 1459 devstat_add_entry(&softc->device_stats, "sa", periph->unit_number, 0, 1460 DEVSTAT_BS_UNAVAILABLE, SID_TYPE(&cgd->inq_data) | 1461 DEVSTAT_TYPE_IF_SCSI, DEVSTAT_PRIORITY_TAPE); 1462 1463 softc->devs.ctl_dev = make_dev(&sa_cdevsw, SAMINOR(SA_CTLDEV, 1464 periph->unit_number, 0, SA_ATYPE_R), UID_ROOT, GID_OPERATOR, 1465 0660, "%s%d.ctl", periph->periph_name, periph->unit_number); 1466 1467 for (i = 0; i < SA_NUM_MODES; i++) { 1468 1469 softc->devs.mode_devs[i].r_dev = make_dev(&sa_cdevsw, 1470 SAMINOR(SA_NOT_CTLDEV, periph->unit_number, i, SA_ATYPE_R), 1471 UID_ROOT, GID_OPERATOR, 0660, "%s%d.%d", 1472 periph->periph_name, periph->unit_number, i); 1473 1474 softc->devs.mode_devs[i].nr_dev = make_dev(&sa_cdevsw, 1475 SAMINOR(SA_NOT_CTLDEV, periph->unit_number, i, SA_ATYPE_NR), 1476 UID_ROOT, GID_OPERATOR, 0660, "n%s%d.%d", 1477 periph->periph_name, periph->unit_number, i); 1478 1479 1480 softc->devs.mode_devs[i].er_dev = make_dev(&sa_cdevsw, 1481 SAMINOR(SA_NOT_CTLDEV, periph->unit_number, i, SA_ATYPE_ER), 1482 UID_ROOT, GID_OPERATOR, 0660, "e%s%d.%d", 1483 periph->periph_name, periph->unit_number, i); 1484 1485 /* 1486 * Make the (well known) aliases for the first mode. 1487 */ 1488 if (i == 0) { 1489 make_dev_alias(softc->devs.mode_devs[i].r_dev, 1490 "%s%d", periph->periph_name, periph->unit_number); 1491 make_dev_alias(softc->devs.mode_devs[i].nr_dev, 1492 "n%s%d", periph->periph_name, periph->unit_number); 1493 make_dev_alias(softc->devs.mode_devs[i].er_dev, 1494 "e%s%d", periph->periph_name, periph->unit_number); 1495 } 1496 } 1497 1498 /* 1499 * Add an async callback so that we get 1500 * notified if this device goes away. 1501 */ 1502 xpt_setup_ccb(&csa.ccb_h, periph->path, /* priority */ 5); 1503 csa.ccb_h.func_code = XPT_SASYNC_CB; 1504 csa.event_enable = AC_LOST_DEVICE; 1505 csa.callback = saasync; 1506 csa.callback_arg = periph; 1507 xpt_action((union ccb *)&csa); 1508 1509 xpt_announce_periph(periph, NULL); 1510 1511 return (CAM_REQ_CMP); 1512 } 1513 1514 static void 1515 sastart(struct cam_periph *periph, union ccb *start_ccb) 1516 { 1517 struct sa_softc *softc; 1518 1519 softc = (struct sa_softc *)periph->softc; 1520 1521 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("sastart")); 1522 1523 1524 switch (softc->state) { 1525 case SA_STATE_NORMAL: 1526 { 1527 /* Pull a buffer from the queue and get going on it */ 1528 struct bio *bp; 1529 int s; 1530 1531 /* 1532 * See if there is a buf with work for us to do.. 1533 */ 1534 s = splbio(); 1535 bp = bioq_first(&softc->bio_queue); 1536 if (periph->immediate_priority <= periph->pinfo.priority) { 1537 CAM_DEBUG_PRINT(CAM_DEBUG_SUBTRACE, 1538 ("queuing for immediate ccb\n")); 1539 Set_CCB_Type(start_ccb, SA_CCB_WAITING); 1540 SLIST_INSERT_HEAD(&periph->ccb_list, &start_ccb->ccb_h, 1541 periph_links.sle); 1542 periph->immediate_priority = CAM_PRIORITY_NONE; 1543 splx(s); 1544 wakeup(&periph->ccb_list); 1545 } else if (bp == NULL) { 1546 splx(s); 1547 xpt_release_ccb(start_ccb); 1548 } else if ((softc->flags & SA_FLAG_ERR_PENDING) != 0) { 1549 struct bio *done_bp; 1550 softc->queue_count--; 1551 bioq_remove(&softc->bio_queue, bp); 1552 bp->bio_resid = bp->bio_bcount; 1553 bp->bio_flags |= BIO_ERROR; 1554 if ((softc->flags & SA_FLAG_EOM_PENDING) != 0) { 1555 if (bp->bio_cmd == BIO_WRITE) 1556 bp->bio_error = ENOSPC; 1557 else 1558 bp->bio_error = EIO; 1559 } 1560 if ((softc->flags & SA_FLAG_EOF_PENDING) != 0) { 1561 bp->bio_error = EIO; 1562 } 1563 if ((softc->flags & SA_FLAG_EIO_PENDING) != 0) { 1564 bp->bio_error = EIO; 1565 } 1566 done_bp = bp; 1567 bp = bioq_first(&softc->bio_queue); 1568 /* 1569 * Only if we have no other buffers queued up 1570 * do we clear the pending error flag. 1571 */ 1572 if (bp == NULL) 1573 softc->flags &= ~SA_FLAG_ERR_PENDING; 1574 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 1575 ("sastart- ERR_PENDING now 0x%x, bp is %sNULL, " 1576 "%d more buffers queued up\n", 1577 (softc->flags & SA_FLAG_ERR_PENDING), 1578 (bp != NULL)? "not " : " ", softc->queue_count)); 1579 splx(s); 1580 xpt_release_ccb(start_ccb); 1581 biodone(done_bp); 1582 } else { 1583 u_int32_t length; 1584 1585 bioq_remove(&softc->bio_queue, bp); 1586 softc->queue_count--; 1587 1588 if ((softc->flags & SA_FLAG_FIXED) != 0) { 1589 if (softc->blk_shift != 0) { 1590 length = 1591 bp->bio_bcount >> softc->blk_shift; 1592 } else if (softc->media_blksize != 0) { 1593 length = bp->bio_bcount / 1594 softc->media_blksize; 1595 } else { 1596 bp->bio_error = EIO; 1597 xpt_print_path(periph->path); 1598 printf("zero blocksize for " 1599 "FIXED length writes?\n"); 1600 splx(s); 1601 biodone(bp); 1602 break; 1603 } 1604 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 1605 ("Fixed Record Count is %d\n", length)); 1606 } else { 1607 length = bp->bio_bcount; 1608 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_INFO, 1609 ("Variable Record Count is %d\n", length)); 1610 } 1611 devstat_start_transaction(&softc->device_stats); 1612 /* 1613 * Some people have theorized that we should 1614 * suppress illegal length indication if we are 1615 * running in variable block mode so that we don't 1616 * have to request sense every time our requested 1617 * block size is larger than the written block. 1618 * The residual information from the ccb allows 1619 * us to identify this situation anyway. The only 1620 * problem with this is that we will not get 1621 * information about blocks that are larger than 1622 * our read buffer unless we set the block size 1623 * in the mode page to something other than 0. 1624 * 1625 * I believe that this is a non-issue. If user apps 1626 * don't adjust their read size to match our record 1627 * size, that's just life. Anyway, the typical usage 1628 * would be to issue, e.g., 64KB reads and occasionally 1629 * have to do deal with 512 byte or 1KB intermediate 1630 * records. 1631 */ 1632 softc->dsreg = (bp->bio_cmd == BIO_READ)? 1633 MTIO_DSREG_RD : MTIO_DSREG_WR; 1634 scsi_sa_read_write(&start_ccb->csio, 0, sadone, 1635 MSG_SIMPLE_Q_TAG, (bp->bio_cmd == BIO_READ), 1636 FALSE, (softc->flags & SA_FLAG_FIXED) != 0, 1637 length, bp->bio_data, bp->bio_bcount, SSD_FULL_SIZE, 1638 120 * 60 * 1000); 1639 start_ccb->ccb_h.ccb_pflags &= ~SA_POSITION_UPDATED; 1640 Set_CCB_Type(start_ccb, SA_CCB_BUFFER_IO); 1641 start_ccb->ccb_h.ccb_bp = bp; 1642 bp = bioq_first(&softc->bio_queue); 1643 splx(s); 1644 xpt_action(start_ccb); 1645 } 1646 1647 if (bp != NULL) { 1648 /* Have more work to do, so ensure we stay scheduled */ 1649 xpt_schedule(periph, 1); 1650 } 1651 break; 1652 } 1653 case SA_STATE_ABNORMAL: 1654 default: 1655 panic("state 0x%x in sastart", softc->state); 1656 break; 1657 } 1658 } 1659 1660 1661 static void 1662 sadone(struct cam_periph *periph, union ccb *done_ccb) 1663 { 1664 struct sa_softc *softc; 1665 struct ccb_scsiio *csio; 1666 1667 softc = (struct sa_softc *)periph->softc; 1668 csio = &done_ccb->csio; 1669 switch (CCB_Type(csio)) { 1670 case SA_CCB_BUFFER_IO: 1671 { 1672 struct bio *bp; 1673 int error; 1674 1675 softc->dsreg = MTIO_DSREG_REST; 1676 bp = (struct bio *)done_ccb->ccb_h.ccb_bp; 1677 error = 0; 1678 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 1679 if ((error = saerror(done_ccb, 0, 0)) == ERESTART) { 1680 /* 1681 * A retry was scheduled, so just return. 1682 */ 1683 return; 1684 } 1685 } 1686 1687 if (error == EIO) { 1688 int s; 1689 struct bio *q_bp; 1690 1691 /* 1692 * Catastrophic error. Mark the tape as frozen 1693 * (we no longer know tape position). 1694 * 1695 * Return all queued I/O with EIO, and unfreeze 1696 * our queue so that future transactions that 1697 * attempt to fix this problem can get to the 1698 * device. 1699 * 1700 */ 1701 1702 s = splbio(); 1703 softc->flags |= SA_FLAG_TAPE_FROZEN; 1704 while ((q_bp = bioq_first(&softc->bio_queue)) != NULL) { 1705 bioq_remove(&softc->bio_queue, q_bp); 1706 q_bp->bio_resid = q_bp->bio_bcount; 1707 biofinish(q_bp, NULL, EIO); 1708 } 1709 splx(s); 1710 } 1711 if (error != 0) { 1712 bp->bio_resid = bp->bio_bcount; 1713 bp->bio_error = error; 1714 bp->bio_flags |= BIO_ERROR; 1715 /* 1716 * In the error case, position is updated in saerror. 1717 */ 1718 } else { 1719 bp->bio_resid = csio->resid; 1720 bp->bio_error = 0; 1721 if (csio->resid != 0) { 1722 bp->bio_flags |= BIO_ERROR; 1723 } 1724 if (bp->bio_cmd == BIO_WRITE) { 1725 softc->flags |= SA_FLAG_TAPE_WRITTEN; 1726 softc->filemarks = 0; 1727 } 1728 if (!(csio->ccb_h.ccb_pflags & SA_POSITION_UPDATED) && 1729 (softc->blkno != (daddr_t) -1)) { 1730 if ((softc->flags & SA_FLAG_FIXED) != 0) { 1731 u_int32_t l; 1732 if (softc->blk_shift != 0) { 1733 l = bp->bio_bcount >> 1734 softc->blk_shift; 1735 } else { 1736 l = bp->bio_bcount / 1737 softc->media_blksize; 1738 } 1739 softc->blkno += (daddr_t) l; 1740 } else { 1741 softc->blkno++; 1742 } 1743 } 1744 } 1745 /* 1746 * If we had an error (immediate or pending), 1747 * release the device queue now. 1748 */ 1749 if (error || (softc->flags & SA_FLAG_ERR_PENDING)) 1750 cam_release_devq(done_ccb->ccb_h.path, 0, 0, 0, 0); 1751 #ifdef CAMDEBUG 1752 if (error || bp->bio_resid) { 1753 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 1754 ("error %d resid %ld count %ld\n", error, 1755 bp->bio_resid, bp->bio_bcount)); 1756 } 1757 #endif 1758 biofinish(bp, &softc->device_stats, 0); 1759 break; 1760 } 1761 case SA_CCB_WAITING: 1762 { 1763 /* Caller will release the CCB */ 1764 wakeup(&done_ccb->ccb_h.cbfcnp); 1765 return; 1766 } 1767 } 1768 xpt_release_ccb(done_ccb); 1769 } 1770 1771 /* 1772 * Mount the tape (make sure it's ready for I/O). 1773 */ 1774 static int 1775 samount(struct cam_periph *periph, int oflags, dev_t dev) 1776 { 1777 struct sa_softc *softc; 1778 union ccb *ccb; 1779 int error; 1780 1781 /* 1782 * oflags can be checked for 'kind' of open (read-only check) - later 1783 * dev can be checked for a control-mode or compression open - later 1784 */ 1785 UNUSED_PARAMETER(oflags); 1786 UNUSED_PARAMETER(dev); 1787 1788 1789 softc = (struct sa_softc *)periph->softc; 1790 1791 /* 1792 * This should determine if something has happend since the last 1793 * open/mount that would invalidate the mount. We do *not* want 1794 * to retry this command- we just want the status. But we only 1795 * do this if we're mounted already- if we're not mounted, 1796 * we don't care about the unit read state and can instead use 1797 * this opportunity to attempt to reserve the tape unit. 1798 */ 1799 1800 if (softc->flags & SA_FLAG_TAPE_MOUNTED) { 1801 ccb = cam_periph_getccb(periph, 1); 1802 scsi_test_unit_ready(&ccb->csio, 0, sadone, 1803 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, 5 * 60 * 1000); 1804 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1805 &softc->device_stats); 1806 QFRLS(ccb); 1807 if (error == ENXIO) { 1808 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 1809 scsi_test_unit_ready(&ccb->csio, 0, sadone, 1810 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, 5 * 60 * 1000); 1811 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1812 &softc->device_stats); 1813 QFRLS(ccb); 1814 } else if (error) { 1815 /* 1816 * We don't need to freeze the tape because we 1817 * will now attempt to rewind/load it. 1818 */ 1819 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 1820 if (CAM_DEBUGGED(ccb->ccb_h.path, CAM_DEBUG_INFO)) { 1821 xpt_print_path(ccb->ccb_h.path); 1822 printf("error %d on TUR in samount\n", error); 1823 } 1824 } 1825 } else { 1826 error = sareservereleaseunit(periph, TRUE); 1827 if (error) { 1828 return (error); 1829 } 1830 ccb = cam_periph_getccb(periph, 1); 1831 scsi_test_unit_ready(&ccb->csio, 0, sadone, 1832 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, 5 * 60 * 1000); 1833 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1834 &softc->device_stats); 1835 QFRLS(ccb); 1836 } 1837 1838 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) { 1839 struct scsi_read_block_limits_data *rblim = NULL; 1840 int comp_enabled, comp_supported; 1841 u_int8_t write_protect, guessing = 0; 1842 1843 /* 1844 * Clear out old state. 1845 */ 1846 softc->flags &= ~(SA_FLAG_TAPE_WP|SA_FLAG_TAPE_WRITTEN| 1847 SA_FLAG_ERR_PENDING|SA_FLAG_COMP_ENABLED| 1848 SA_FLAG_COMP_SUPP|SA_FLAG_COMP_UNSUPP); 1849 softc->filemarks = 0; 1850 1851 /* 1852 * *Very* first off, make sure we're loaded to BOT. 1853 */ 1854 scsi_load_unload(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 1855 FALSE, FALSE, 1, SSD_FULL_SIZE, REWIND_TIMEOUT); 1856 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1857 &softc->device_stats); 1858 QFRLS(ccb); 1859 1860 /* 1861 * In case this doesn't work, do a REWIND instead 1862 */ 1863 if (error) { 1864 scsi_rewind(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, 1865 FALSE, SSD_FULL_SIZE, REWIND_TIMEOUT); 1866 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1867 &softc->device_stats); 1868 QFRLS(ccb); 1869 } 1870 if (error) { 1871 xpt_release_ccb(ccb); 1872 goto exit; 1873 } 1874 1875 /* 1876 * Do a dummy test read to force access to the 1877 * media so that the drive will really know what's 1878 * there. We actually don't really care what the 1879 * blocksize on tape is and don't expect to really 1880 * read a full record. 1881 */ 1882 rblim = (struct scsi_read_block_limits_data *) 1883 malloc(8192, M_TEMP, M_WAITOK); 1884 if (rblim == NULL) { 1885 xpt_print_path(ccb->ccb_h.path); 1886 printf("no memory for test read\n"); 1887 xpt_release_ccb(ccb); 1888 error = ENOMEM; 1889 goto exit; 1890 } 1891 1892 if ((softc->quirks & SA_QUIRK_NODREAD) == 0) { 1893 scsi_sa_read_write(&ccb->csio, 0, sadone, 1894 MSG_SIMPLE_Q_TAG, 1, FALSE, 0, 8192, 1895 (void *) rblim, 8192, SSD_FULL_SIZE, 1896 120 * 60 * 1000); 1897 (void) cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1898 &softc->device_stats); 1899 QFRLS(ccb); 1900 scsi_rewind(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, 1901 FALSE, SSD_FULL_SIZE, REWIND_TIMEOUT); 1902 error = cam_periph_runccb(ccb, saerror, CAM_RETRY_SELTO, 1903 SF_NO_PRINT | SF_RETRY_UA, 1904 &softc->device_stats); 1905 QFRLS(ccb); 1906 if (error) { 1907 xpt_print_path(ccb->ccb_h.path); 1908 printf("unable to rewind after test read\n"); 1909 xpt_release_ccb(ccb); 1910 goto exit; 1911 } 1912 } 1913 1914 /* 1915 * Next off, determine block limits. 1916 */ 1917 scsi_read_block_limits(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, 1918 rblim, SSD_FULL_SIZE, 5000); 1919 1920 error = cam_periph_runccb(ccb, saerror, CAM_RETRY_SELTO, 1921 SF_NO_PRINT | SF_RETRY_UA, &softc->device_stats); 1922 1923 QFRLS(ccb); 1924 xpt_release_ccb(ccb); 1925 1926 if (error != 0) { 1927 /* 1928 * If it's less than SCSI-2, READ BLOCK LIMITS is not 1929 * a MANDATORY command. Anyway- it doesn't matter- 1930 * we can proceed anyway. 1931 */ 1932 softc->blk_gran = 0; 1933 softc->max_blk = ~0; 1934 softc->min_blk = 0; 1935 } else { 1936 if (softc->scsi_rev >= SCSI_REV_SPC) { 1937 softc->blk_gran = RBL_GRAN(rblim); 1938 } else { 1939 softc->blk_gran = 0; 1940 } 1941 /* 1942 * We take max_blk == min_blk to mean a default to 1943 * fixed mode- but note that whatever we get out of 1944 * sagetparams below will actually determine whether 1945 * we are actually *in* fixed mode. 1946 */ 1947 softc->max_blk = scsi_3btoul(rblim->maximum); 1948 softc->min_blk = scsi_2btoul(rblim->minimum); 1949 1950 1951 } 1952 /* 1953 * Next, perform a mode sense to determine 1954 * current density, blocksize, compression etc. 1955 */ 1956 error = sagetparams(periph, SA_PARAM_ALL, 1957 &softc->media_blksize, 1958 &softc->media_density, 1959 &softc->media_numblks, 1960 &softc->buffer_mode, &write_protect, 1961 &softc->speed, &comp_supported, 1962 &comp_enabled, &softc->comp_algorithm, 1963 NULL); 1964 1965 if (error != 0) { 1966 /* 1967 * We could work a little harder here. We could 1968 * adjust our attempts to get information. It 1969 * might be an ancient tape drive. If someone 1970 * nudges us, we'll do that. 1971 */ 1972 goto exit; 1973 } 1974 1975 /* 1976 * If no quirk has determined that this is a device that is 1977 * preferred to be in fixed or variable mode, now is the time 1978 * to find out. 1979 */ 1980 if ((softc->quirks & (SA_QUIRK_FIXED|SA_QUIRK_VARIABLE)) == 0) { 1981 guessing = 1; 1982 /* 1983 * This could be expensive to find out. Luckily we 1984 * only need to do this once. If we start out in 1985 * 'default' mode, try and set ourselves to one 1986 * of the densities that would determine a wad 1987 * of other stuff. Go from highest to lowest. 1988 */ 1989 if (softc->media_density == SCSI_DEFAULT_DENSITY) { 1990 int i; 1991 static u_int8_t ctry[] = { 1992 SCSI_DENSITY_HALFINCH_PE, 1993 SCSI_DENSITY_HALFINCH_6250C, 1994 SCSI_DENSITY_HALFINCH_6250, 1995 SCSI_DENSITY_HALFINCH_1600, 1996 SCSI_DENSITY_HALFINCH_800, 1997 SCSI_DENSITY_QIC_4GB, 1998 SCSI_DENSITY_QIC_2GB, 1999 SCSI_DENSITY_QIC_525_320, 2000 SCSI_DENSITY_QIC_150, 2001 SCSI_DENSITY_QIC_120, 2002 SCSI_DENSITY_QIC_24, 2003 SCSI_DENSITY_QIC_11_9TRK, 2004 SCSI_DENSITY_QIC_11_4TRK, 2005 SCSI_DENSITY_QIC_1320, 2006 SCSI_DENSITY_QIC_3080, 2007 0 2008 }; 2009 for (i = 0; ctry[i]; i++) { 2010 error = sasetparams(periph, 2011 SA_PARAM_DENSITY, 0, ctry[i], 2012 0, SF_NO_PRINT); 2013 if (error == 0) { 2014 softc->media_density = ctry[i]; 2015 break; 2016 } 2017 } 2018 } 2019 switch (softc->media_density) { 2020 case SCSI_DENSITY_QIC_11_4TRK: 2021 case SCSI_DENSITY_QIC_11_9TRK: 2022 case SCSI_DENSITY_QIC_24: 2023 case SCSI_DENSITY_QIC_120: 2024 case SCSI_DENSITY_QIC_150: 2025 case SCSI_DENSITY_QIC_525_320: 2026 case SCSI_DENSITY_QIC_1320: 2027 case SCSI_DENSITY_QIC_3080: 2028 softc->quirks &= ~SA_QUIRK_2FM; 2029 softc->quirks |= SA_QUIRK_FIXED|SA_QUIRK_1FM; 2030 softc->last_media_blksize = 512; 2031 break; 2032 case SCSI_DENSITY_QIC_4GB: 2033 case SCSI_DENSITY_QIC_2GB: 2034 softc->quirks &= ~SA_QUIRK_2FM; 2035 softc->quirks |= SA_QUIRK_FIXED|SA_QUIRK_1FM; 2036 softc->last_media_blksize = 1024; 2037 break; 2038 default: 2039 softc->last_media_blksize = 2040 softc->media_blksize; 2041 softc->quirks |= SA_QUIRK_VARIABLE; 2042 break; 2043 } 2044 } 2045 2046 /* 2047 * If no quirk has determined that this is a device that needs 2048 * to have 2 Filemarks at EOD, now is the time to find out. 2049 */ 2050 2051 if ((softc->quirks & SA_QUIRK_2FM) == 0) { 2052 switch (softc->media_density) { 2053 case SCSI_DENSITY_HALFINCH_800: 2054 case SCSI_DENSITY_HALFINCH_1600: 2055 case SCSI_DENSITY_HALFINCH_6250: 2056 case SCSI_DENSITY_HALFINCH_6250C: 2057 case SCSI_DENSITY_HALFINCH_PE: 2058 softc->quirks &= ~SA_QUIRK_1FM; 2059 softc->quirks |= SA_QUIRK_2FM; 2060 break; 2061 default: 2062 break; 2063 } 2064 } 2065 2066 /* 2067 * Now validate that some info we got makes sense. 2068 */ 2069 if ((softc->max_blk < softc->media_blksize) || 2070 (softc->min_blk > softc->media_blksize && 2071 softc->media_blksize)) { 2072 xpt_print_path(ccb->ccb_h.path); 2073 printf("BLOCK LIMITS (%d..%d) could not match current " 2074 "block settings (%d)- adjusting\n", softc->min_blk, 2075 softc->max_blk, softc->media_blksize); 2076 softc->max_blk = softc->min_blk = 2077 softc->media_blksize; 2078 } 2079 2080 /* 2081 * Now put ourselves into the right frame of mind based 2082 * upon quirks... 2083 */ 2084 tryagain: 2085 /* 2086 * If we want to be in FIXED mode and our current blocksize 2087 * is not equal to our last blocksize (if nonzero), try and 2088 * set ourselves to this last blocksize (as the 'preferred' 2089 * block size). The initial quirkmatch at registry sets the 2090 * initial 'last' blocksize. If, for whatever reason, this 2091 * 'last' blocksize is zero, set the blocksize to 512, 2092 * or min_blk if that's larger. 2093 */ 2094 if ((softc->quirks & SA_QUIRK_FIXED) && 2095 (softc->quirks & SA_QUIRK_NO_MODESEL) == 0 && 2096 (softc->media_blksize != softc->last_media_blksize)) { 2097 softc->media_blksize = softc->last_media_blksize; 2098 if (softc->media_blksize == 0) { 2099 softc->media_blksize = 512; 2100 if (softc->media_blksize < softc->min_blk) { 2101 softc->media_blksize = softc->min_blk; 2102 } 2103 } 2104 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, 2105 softc->media_blksize, 0, 0, SF_NO_PRINT); 2106 if (error) { 2107 xpt_print_path(ccb->ccb_h.path); 2108 printf("unable to set fixed blocksize to %d\n", 2109 softc->media_blksize); 2110 goto exit; 2111 } 2112 } 2113 2114 if ((softc->quirks & SA_QUIRK_VARIABLE) && 2115 (softc->media_blksize != 0)) { 2116 softc->last_media_blksize = softc->media_blksize; 2117 softc->media_blksize = 0; 2118 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, 2119 0, 0, 0, SF_NO_PRINT); 2120 if (error) { 2121 /* 2122 * If this fails and we were guessing, just 2123 * assume that we got it wrong and go try 2124 * fixed block mode. Don't even check against 2125 * density code at this point. 2126 */ 2127 if (guessing) { 2128 softc->quirks &= ~SA_QUIRK_VARIABLE; 2129 softc->quirks |= SA_QUIRK_FIXED; 2130 if (softc->last_media_blksize == 0) 2131 softc->last_media_blksize = 512; 2132 goto tryagain; 2133 } 2134 xpt_print_path(ccb->ccb_h.path); 2135 printf("unable to set variable blocksize\n"); 2136 goto exit; 2137 } 2138 } 2139 2140 /* 2141 * Now that we have the current block size, 2142 * set up some parameters for sastart's usage. 2143 */ 2144 if (softc->media_blksize) { 2145 softc->flags |= SA_FLAG_FIXED; 2146 if (powerof2(softc->media_blksize)) { 2147 softc->blk_shift = 2148 ffs(softc->media_blksize) - 1; 2149 softc->blk_mask = softc->media_blksize - 1; 2150 } else { 2151 softc->blk_mask = ~0; 2152 softc->blk_shift = 0; 2153 } 2154 } else { 2155 /* 2156 * The SCSI-3 spec allows 0 to mean "unspecified". 2157 * The SCSI-1 spec allows 0 to mean 'infinite'. 2158 * 2159 * Either works here. 2160 */ 2161 if (softc->max_blk == 0) { 2162 softc->max_blk = ~0; 2163 } 2164 softc->blk_shift = 0; 2165 if (softc->blk_gran != 0) { 2166 softc->blk_mask = softc->blk_gran - 1; 2167 } else { 2168 softc->blk_mask = 0; 2169 } 2170 } 2171 2172 if (write_protect) 2173 softc->flags |= SA_FLAG_TAPE_WP; 2174 2175 if (comp_supported) { 2176 if (softc->saved_comp_algorithm == 0) 2177 softc->saved_comp_algorithm = 2178 softc->comp_algorithm; 2179 softc->flags |= SA_FLAG_COMP_SUPP; 2180 if (comp_enabled) 2181 softc->flags |= SA_FLAG_COMP_ENABLED; 2182 } else 2183 softc->flags |= SA_FLAG_COMP_UNSUPP; 2184 2185 if ((softc->buffer_mode == SMH_SA_BUF_MODE_NOBUF) && 2186 (softc->quirks & SA_QUIRK_NO_MODESEL) == 0) { 2187 error = sasetparams(periph, SA_PARAM_BUFF_MODE, 0, 2188 0, 0, SF_NO_PRINT); 2189 if (error == 0) 2190 softc->buffer_mode = SMH_SA_BUF_MODE_SIBUF; 2191 xpt_print_path(ccb->ccb_h.path); 2192 printf("unable to set buffered mode\n"); 2193 error = 0; /* not an error */ 2194 } 2195 2196 2197 if (error == 0) { 2198 softc->flags |= SA_FLAG_TAPE_MOUNTED; 2199 } 2200 exit: 2201 if (rblim != NULL) 2202 free(rblim, M_TEMP); 2203 2204 if (error != 0) { 2205 softc->dsreg = MTIO_DSREG_NIL; 2206 } else { 2207 softc->fileno = softc->blkno = 0; 2208 softc->dsreg = MTIO_DSREG_REST; 2209 } 2210 #ifdef SA_1FM_AT_EOD 2211 if ((softc->quirks & SA_QUIRK_2FM) == 0) 2212 softc->quirks |= SA_QUIRK_1FM; 2213 #else 2214 if ((softc->quirks & SA_QUIRK_1FM) == 0) 2215 softc->quirks |= SA_QUIRK_2FM; 2216 #endif 2217 } else 2218 xpt_release_ccb(ccb); 2219 2220 /* 2221 * If we return an error, we're not mounted any more, 2222 * so release any device reservation. 2223 */ 2224 if (error != 0) { 2225 (void) sareservereleaseunit(periph, FALSE); 2226 } 2227 return (error); 2228 } 2229 2230 /* 2231 * How many filemarks do we need to write if we were to terminate the 2232 * tape session right now? Note that this can be a negative number 2233 */ 2234 2235 static int 2236 samarkswanted(struct cam_periph *periph) 2237 { 2238 int markswanted; 2239 struct sa_softc *softc; 2240 2241 softc = (struct sa_softc *)periph->softc; 2242 markswanted = 0; 2243 if ((softc->flags & SA_FLAG_TAPE_WRITTEN) != 0) { 2244 markswanted++; 2245 if (softc->quirks & SA_QUIRK_2FM) 2246 markswanted++; 2247 } 2248 markswanted -= softc->filemarks; 2249 return (markswanted); 2250 } 2251 2252 static int 2253 sacheckeod(struct cam_periph *periph) 2254 { 2255 int error; 2256 int markswanted; 2257 struct sa_softc *softc; 2258 2259 softc = (struct sa_softc *)periph->softc; 2260 markswanted = samarkswanted(periph); 2261 2262 if (markswanted > 0) { 2263 error = sawritefilemarks(periph, markswanted, FALSE); 2264 } else { 2265 error = 0; 2266 } 2267 return (error); 2268 } 2269 2270 static int 2271 saerror(union ccb *ccb, u_int32_t cflgs, u_int32_t sflgs) 2272 { 2273 static const char *toobig = 2274 "%d-byte tape record bigger than suplied buffer\n"; 2275 struct cam_periph *periph; 2276 struct sa_softc *softc; 2277 struct ccb_scsiio *csio; 2278 struct scsi_sense_data *sense; 2279 u_int32_t resid = 0; 2280 int32_t info = 0; 2281 int error_code, sense_key, asc, ascq; 2282 int error, defer_action, no_actual_error = FALSE; 2283 2284 periph = xpt_path_periph(ccb->ccb_h.path); 2285 softc = (struct sa_softc *)periph->softc; 2286 csio = &ccb->csio; 2287 sense = &csio->sense_data; 2288 scsi_extract_sense(sense, &error_code, &sense_key, &asc, &ascq); 2289 error = 0; 2290 2291 /* 2292 * Calculate/latch up, any residuals... 2293 */ 2294 if ((csio->ccb_h.status & CAM_STATUS_MASK) == CAM_SCSI_STATUS_ERROR) { 2295 if ((sense->error_code & SSD_ERRCODE_VALID) != 0) { 2296 info = (int32_t) scsi_4btoul(sense->info); 2297 resid = info; 2298 if ((softc->flags & SA_FLAG_FIXED) != 0) 2299 resid *= softc->media_blksize; 2300 } else { 2301 resid = csio->dxfer_len; 2302 info = resid; 2303 if ((softc->flags & SA_FLAG_FIXED) != 0) { 2304 if (softc->media_blksize) 2305 info /= softc->media_blksize; 2306 } 2307 } 2308 if (CCB_Type(csio) == SA_CCB_BUFFER_IO) { 2309 bcopy((caddr_t) sense, (caddr_t) &softc->last_io_sense, 2310 sizeof (struct scsi_sense_data)); 2311 bcopy(csio->cdb_io.cdb_bytes, softc->last_io_cdb, 2312 (int) csio->cdb_len); 2313 softc->last_io_resid = resid; 2314 softc->last_resid_was_io = 1; 2315 } else { 2316 bcopy((caddr_t) sense, (caddr_t) &softc->last_ctl_sense, 2317 sizeof (struct scsi_sense_data)); 2318 bcopy(csio->cdb_io.cdb_bytes, softc->last_ctl_cdb, 2319 (int) csio->cdb_len); 2320 softc->last_ctl_resid = resid; 2321 softc->last_resid_was_io = 0; 2322 } 2323 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("Key 0x%x ASC/ASCQ " 2324 "0x%x 0x%x flags 0x%x resid %d dxfer_len %d\n", sense_key, 2325 asc, ascq, sense->flags & ~SSD_KEY_RESERVED, resid, 2326 csio->dxfer_len)); 2327 } else { 2328 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("Cam Status 0x%x\n", 2329 csio->ccb_h.status & CAM_STATUS_MASK)); 2330 } 2331 2332 /* 2333 * If it's neither a SCSI Check Condition Error nor a non-read/write 2334 * command, let the common code deal with it the error setting. 2335 */ 2336 if ((csio->ccb_h.status & CAM_STATUS_MASK) != CAM_SCSI_STATUS_ERROR || 2337 (CCB_Type(csio) == SA_CCB_WAITING)) { 2338 return (cam_periph_error(ccb, cflgs, sflgs, &softc->saved_ccb)); 2339 } 2340 2341 /* 2342 * Calculate whether we'll defer action. 2343 */ 2344 2345 if (resid > 0 && resid < csio->dxfer_len && 2346 (softc->flags & SA_FLAG_FIXED) != 0) { 2347 defer_action = TRUE; 2348 } else { 2349 defer_action = FALSE; 2350 } 2351 2352 /* 2353 * Handle filemark, end of tape, mismatched record sizes.... 2354 * From this point out, we're only handling read/write cases. 2355 * Handle writes && reads differently. 2356 */ 2357 2358 if (csio->cdb_io.cdb_bytes[0] == SA_WRITE) { 2359 if (sense->flags & SSD_FILEMARK) { 2360 xpt_print_path(csio->ccb_h.path); 2361 printf("filemark detected on write?\n"); 2362 if (softc->fileno != (daddr_t) -1) { 2363 softc->fileno++; 2364 softc->blkno = 0; 2365 csio->ccb_h.ccb_pflags |= SA_POSITION_UPDATED; 2366 } 2367 } 2368 if (sense->flags & SSD_EOM) { 2369 csio->resid = resid; 2370 if (defer_action) { 2371 error = -1; 2372 softc->flags |= SA_FLAG_EOM_PENDING; 2373 } else { 2374 error = ENOSPC; 2375 } 2376 } 2377 } else { 2378 if (sense_key == SSD_KEY_BLANK_CHECK) { 2379 csio->resid = resid; 2380 if (defer_action) { 2381 error = -1; 2382 softc->flags |= SA_FLAG_EOM_PENDING; 2383 } else { 2384 error = EIO; 2385 } 2386 } 2387 if (sense->flags & SSD_FILEMARK) { 2388 csio->resid = resid; 2389 if (defer_action) { 2390 error = -1; 2391 softc->flags |= SA_FLAG_EOF_PENDING; 2392 } else { 2393 no_actual_error = TRUE; 2394 } 2395 /* 2396 * Unconditionally, if we detected a filemark on a read, 2397 * mark that we've run moved a file ahead. 2398 */ 2399 if (softc->fileno != (daddr_t) -1) { 2400 softc->fileno++; 2401 softc->blkno = 0; 2402 csio->ccb_h.ccb_pflags |= SA_POSITION_UPDATED; 2403 } 2404 } 2405 } 2406 /* 2407 * Incorrect Length usually applies to read, but can apply to writes. 2408 */ 2409 if (error == 0 && (sense->flags & SSD_ILI)) { 2410 if (info < 0) { 2411 xpt_print_path(csio->ccb_h.path); 2412 printf(toobig, csio->dxfer_len - info); 2413 csio->resid = csio->dxfer_len; 2414 error = EIO; 2415 } else { 2416 csio->resid = resid; 2417 if ((softc->flags & SA_FLAG_FIXED) != 0) { 2418 if (defer_action) 2419 softc->flags |= SA_FLAG_EIO_PENDING; 2420 else 2421 error = EIO; 2422 } else { 2423 no_actual_error = TRUE; 2424 } 2425 /* 2426 * Bump the block number if we hadn't seen a filemark. 2427 * Do this independent of errors (we've moved anyway). 2428 */ 2429 if ((sense->flags & SSD_FILEMARK) == 0) { 2430 if (softc->blkno != (daddr_t) -1) { 2431 softc->blkno++; 2432 csio->ccb_h.ccb_pflags |= 2433 SA_POSITION_UPDATED; 2434 } 2435 } 2436 } 2437 } 2438 if (error == 0 && !no_actual_error) 2439 return (cam_periph_error(ccb, cflgs, sflgs, &softc->saved_ccb)); 2440 if (no_actual_error) { 2441 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 2442 cam_release_devq(ccb->ccb_h.path, 2443 /* relsim_flags */0, 2444 /* openings */0, 2445 /* timeout */0, 2446 /* getcount_only */ FALSE); 2447 return (0); 2448 } 2449 2450 if (error == -1) 2451 return (0); 2452 else 2453 return (error); 2454 } 2455 2456 static int 2457 sagetparams(struct cam_periph *periph, sa_params params_to_get, 2458 u_int32_t *blocksize, u_int8_t *density, u_int32_t *numblocks, 2459 int *buff_mode, u_int8_t *write_protect, u_int8_t *speed, 2460 int *comp_supported, int *comp_enabled, u_int32_t *comp_algorithm, 2461 sa_comp_t *tcs) 2462 { 2463 union ccb *ccb; 2464 void *mode_buffer; 2465 struct scsi_mode_header_6 *mode_hdr; 2466 struct scsi_mode_blk_desc *mode_blk; 2467 int mode_buffer_len; 2468 struct sa_softc *softc; 2469 u_int8_t cpage; 2470 int error; 2471 cam_status status; 2472 2473 softc = (struct sa_softc *)periph->softc; 2474 ccb = cam_periph_getccb(periph, 1); 2475 if (softc->quirks & SA_QUIRK_NO_CPAGE) 2476 cpage = SA_DEVICE_CONFIGURATION_PAGE; 2477 else 2478 cpage = SA_DATA_COMPRESSION_PAGE; 2479 2480 retry: 2481 mode_buffer_len = sizeof(*mode_hdr) + sizeof(*mode_blk); 2482 2483 if (params_to_get & SA_PARAM_COMPRESSION) { 2484 if (softc->quirks & SA_QUIRK_NOCOMP) { 2485 *comp_supported = FALSE; 2486 params_to_get &= ~SA_PARAM_COMPRESSION; 2487 } else 2488 mode_buffer_len += sizeof (sa_comp_t); 2489 } 2490 2491 mode_buffer = malloc(mode_buffer_len, M_TEMP, M_WAITOK | M_ZERO); 2492 mode_hdr = (struct scsi_mode_header_6 *)mode_buffer; 2493 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 2494 2495 /* it is safe to retry this */ 2496 scsi_mode_sense(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 2497 SMS_PAGE_CTRL_CURRENT, (params_to_get & SA_PARAM_COMPRESSION) ? 2498 cpage : SMS_VENDOR_SPECIFIC_PAGE, mode_buffer, mode_buffer_len, 2499 SSD_FULL_SIZE, 5000); 2500 2501 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2502 &softc->device_stats); 2503 QFRLS(ccb); 2504 2505 status = ccb->ccb_h.status & CAM_STATUS_MASK; 2506 2507 if (error == EINVAL && (params_to_get & SA_PARAM_COMPRESSION) != 0) { 2508 /* 2509 * Hmm. Let's see if we can try another page... 2510 * If we've already done that, give up on compression 2511 * for this device and remember this for the future 2512 * and attempt the request without asking for compression 2513 * info. 2514 */ 2515 if (cpage == SA_DATA_COMPRESSION_PAGE) { 2516 cpage = SA_DEVICE_CONFIGURATION_PAGE; 2517 goto retry; 2518 } 2519 softc->quirks |= SA_QUIRK_NOCOMP; 2520 free(mode_buffer, M_TEMP); 2521 goto retry; 2522 } else if (status == CAM_SCSI_STATUS_ERROR) { 2523 /* Tell the user about the fatal error. */ 2524 scsi_sense_print(&ccb->csio); 2525 goto sagetparamsexit; 2526 } 2527 2528 /* 2529 * If the user only wants the compression information, and 2530 * the device doesn't send back the block descriptor, it's 2531 * no big deal. If the user wants more than just 2532 * compression, though, and the device doesn't pass back the 2533 * block descriptor, we need to send another mode sense to 2534 * get the block descriptor. 2535 */ 2536 if ((mode_hdr->blk_desc_len == 0) && 2537 (params_to_get & SA_PARAM_COMPRESSION) && 2538 (params_to_get & ~(SA_PARAM_COMPRESSION))) { 2539 2540 /* 2541 * Decrease the mode buffer length by the size of 2542 * the compression page, to make sure the data 2543 * there doesn't get overwritten. 2544 */ 2545 mode_buffer_len -= sizeof (sa_comp_t); 2546 2547 /* 2548 * Now move the compression page that we presumably 2549 * got back down the memory chunk a little bit so 2550 * it doesn't get spammed. 2551 */ 2552 bcopy(&mode_hdr[0], &mode_hdr[1], sizeof (sa_comp_t)); 2553 bzero(&mode_hdr[0], sizeof (mode_hdr[0])); 2554 2555 /* 2556 * Now, we issue another mode sense and just ask 2557 * for the block descriptor, etc. 2558 */ 2559 2560 scsi_mode_sense(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 2561 SMS_PAGE_CTRL_CURRENT, SMS_VENDOR_SPECIFIC_PAGE, 2562 mode_buffer, mode_buffer_len, SSD_FULL_SIZE, 5000); 2563 2564 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2565 &softc->device_stats); 2566 QFRLS(ccb); 2567 2568 if (error != 0) 2569 goto sagetparamsexit; 2570 } 2571 2572 if (params_to_get & SA_PARAM_BLOCKSIZE) 2573 *blocksize = scsi_3btoul(mode_blk->blklen); 2574 2575 if (params_to_get & SA_PARAM_NUMBLOCKS) 2576 *numblocks = scsi_3btoul(mode_blk->nblocks); 2577 2578 if (params_to_get & SA_PARAM_BUFF_MODE) 2579 *buff_mode = mode_hdr->dev_spec & SMH_SA_BUF_MODE_MASK; 2580 2581 if (params_to_get & SA_PARAM_DENSITY) 2582 *density = mode_blk->density; 2583 2584 if (params_to_get & SA_PARAM_WP) 2585 *write_protect = (mode_hdr->dev_spec & SMH_SA_WP)? TRUE : FALSE; 2586 2587 if (params_to_get & SA_PARAM_SPEED) 2588 *speed = mode_hdr->dev_spec & SMH_SA_SPEED_MASK; 2589 2590 if (params_to_get & SA_PARAM_COMPRESSION) { 2591 sa_comp_t *ntcs = (sa_comp_t *) &mode_blk[1]; 2592 if (cpage == SA_DATA_COMPRESSION_PAGE) { 2593 struct scsi_data_compression_page *cp = &ntcs->dcomp; 2594 *comp_supported = 2595 (cp->dce_and_dcc & SA_DCP_DCC)? TRUE : FALSE; 2596 *comp_enabled = 2597 (cp->dce_and_dcc & SA_DCP_DCE)? TRUE : FALSE; 2598 *comp_algorithm = scsi_4btoul(cp->comp_algorithm); 2599 } else { 2600 struct scsi_dev_conf_page *cp = &ntcs->dconf; 2601 /* 2602 * We don't really know whether this device supports 2603 * Data Compression if the the algorithm field is 2604 * zero. Just say we do. 2605 */ 2606 *comp_supported = TRUE; 2607 *comp_enabled = 2608 (cp->sel_comp_alg != SA_COMP_NONE)? TRUE : FALSE; 2609 *comp_algorithm = cp->sel_comp_alg; 2610 } 2611 if (tcs != NULL) 2612 bcopy(ntcs, tcs, sizeof (sa_comp_t)); 2613 } 2614 2615 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 2616 int idx; 2617 char *xyz = mode_buffer; 2618 xpt_print_path(periph->path); 2619 printf("Mode Sense Data="); 2620 for (idx = 0; idx < mode_buffer_len; idx++) 2621 printf(" 0x%02x", xyz[idx] & 0xff); 2622 printf("\n"); 2623 } 2624 2625 sagetparamsexit: 2626 2627 xpt_release_ccb(ccb); 2628 free(mode_buffer, M_TEMP); 2629 return (error); 2630 } 2631 2632 /* 2633 * The purpose of this function is to set one of four different parameters 2634 * for a tape drive: 2635 * - blocksize 2636 * - density 2637 * - compression / compression algorithm 2638 * - buffering mode 2639 * 2640 * The assumption is that this will be called from saioctl(), and therefore 2641 * from a process context. Thus the waiting malloc calls below. If that 2642 * assumption ever changes, the malloc calls should be changed to be 2643 * NOWAIT mallocs. 2644 * 2645 * Any or all of the four parameters may be set when this function is 2646 * called. It should handle setting more than one parameter at once. 2647 */ 2648 static int 2649 sasetparams(struct cam_periph *periph, sa_params params_to_set, 2650 u_int32_t blocksize, u_int8_t density, u_int32_t calg, 2651 u_int32_t sense_flags) 2652 { 2653 struct sa_softc *softc; 2654 u_int32_t current_blocksize; 2655 u_int32_t current_calg; 2656 u_int8_t current_density; 2657 u_int8_t current_speed; 2658 int comp_enabled, comp_supported; 2659 void *mode_buffer; 2660 int mode_buffer_len; 2661 struct scsi_mode_header_6 *mode_hdr; 2662 struct scsi_mode_blk_desc *mode_blk; 2663 sa_comp_t *ccomp, *cpage; 2664 int buff_mode; 2665 union ccb *ccb = NULL; 2666 int error; 2667 2668 softc = (struct sa_softc *)periph->softc; 2669 2670 ccomp = malloc(sizeof (sa_comp_t), M_TEMP, M_WAITOK); 2671 2672 /* 2673 * Since it doesn't make sense to set the number of blocks, or 2674 * write protection, we won't try to get the current value. We 2675 * always want to get the blocksize, so we can set it back to the 2676 * proper value. 2677 */ 2678 error = sagetparams(periph, 2679 params_to_set | SA_PARAM_BLOCKSIZE | SA_PARAM_SPEED, 2680 ¤t_blocksize, ¤t_density, NULL, &buff_mode, NULL, 2681 ¤t_speed, &comp_supported, &comp_enabled, 2682 ¤t_calg, ccomp); 2683 2684 if (error != 0) { 2685 free(ccomp, M_TEMP); 2686 return (error); 2687 } 2688 2689 mode_buffer_len = sizeof(*mode_hdr) + sizeof(*mode_blk); 2690 if (params_to_set & SA_PARAM_COMPRESSION) 2691 mode_buffer_len += sizeof (sa_comp_t); 2692 2693 mode_buffer = malloc(mode_buffer_len, M_TEMP, M_WAITOK | M_ZERO); 2694 2695 mode_hdr = (struct scsi_mode_header_6 *)mode_buffer; 2696 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 2697 2698 ccb = cam_periph_getccb(periph, 1); 2699 2700 retry: 2701 2702 if (params_to_set & SA_PARAM_COMPRESSION) { 2703 if (mode_blk) { 2704 cpage = (sa_comp_t *)&mode_blk[1]; 2705 } else { 2706 cpage = (sa_comp_t *)&mode_hdr[1]; 2707 } 2708 bcopy(ccomp, cpage, sizeof (sa_comp_t)); 2709 cpage->hdr.pagecode &= ~0x80; 2710 } else 2711 cpage = NULL; 2712 2713 /* 2714 * If the caller wants us to set the blocksize, use the one they 2715 * pass in. Otherwise, use the blocksize we got back from the 2716 * mode select above. 2717 */ 2718 if (mode_blk) { 2719 if (params_to_set & SA_PARAM_BLOCKSIZE) 2720 scsi_ulto3b(blocksize, mode_blk->blklen); 2721 else 2722 scsi_ulto3b(current_blocksize, mode_blk->blklen); 2723 2724 /* 2725 * Set density if requested, else preserve old density. 2726 * SCSI_SAME_DENSITY only applies to SCSI-2 or better 2727 * devices, else density we've latched up in our softc. 2728 */ 2729 if (params_to_set & SA_PARAM_DENSITY) { 2730 mode_blk->density = density; 2731 } else if (softc->scsi_rev > SCSI_REV_CCS) { 2732 mode_blk->density = SCSI_SAME_DENSITY; 2733 } else { 2734 mode_blk->density = softc->media_density; 2735 } 2736 } 2737 2738 /* 2739 * For mode selects, these two fields must be zero. 2740 */ 2741 mode_hdr->data_length = 0; 2742 mode_hdr->medium_type = 0; 2743 2744 /* set the speed to the current value */ 2745 mode_hdr->dev_spec = current_speed; 2746 2747 /* set single-initiator buffering mode */ 2748 mode_hdr->dev_spec |= SMH_SA_BUF_MODE_SIBUF; 2749 2750 if (mode_blk) 2751 mode_hdr->blk_desc_len = sizeof(struct scsi_mode_blk_desc); 2752 else 2753 mode_hdr->blk_desc_len = 0; 2754 2755 /* 2756 * First, if the user wants us to set the compression algorithm or 2757 * just turn compression on, check to make sure that this drive 2758 * supports compression. 2759 */ 2760 if (params_to_set & SA_PARAM_COMPRESSION) { 2761 /* 2762 * If the compression algorithm is 0, disable compression. 2763 * If the compression algorithm is non-zero, enable 2764 * compression and set the compression type to the 2765 * specified compression algorithm, unless the algorithm is 2766 * MT_COMP_ENABLE. In that case, we look at the 2767 * compression algorithm that is currently set and if it is 2768 * non-zero, we leave it as-is. If it is zero, and we have 2769 * saved a compression algorithm from a time when 2770 * compression was enabled before, set the compression to 2771 * the saved value. 2772 */ 2773 switch (ccomp->hdr.pagecode & ~0x80) { 2774 case SA_DATA_COMPRESSION_PAGE: 2775 if (ccomp->dcomp.dce_and_dcc & SA_DCP_DCC) { 2776 struct scsi_data_compression_page *dcp = &cpage->dcomp; 2777 if (calg == 0) { 2778 /* 2779 * Disable compression, but leave the 2780 * decompression and the capability bit 2781 * alone. 2782 */ 2783 dcp->dce_and_dcc = SA_DCP_DCC; 2784 dcp->dde_and_red |= SA_DCP_DDE; 2785 break; 2786 } 2787 /* enable compression && decompression */ 2788 dcp->dce_and_dcc = SA_DCP_DCE | SA_DCP_DCC; 2789 dcp->dde_and_red |= SA_DCP_DDE; 2790 /* 2791 * If there, use compression algorithm from caller. 2792 * Otherwise, if there's a saved compression algorithm 2793 * and there is no current algorithm, use the saved 2794 * algorithm. Else parrot back what we got and hope 2795 * for the best. 2796 */ 2797 if (calg != MT_COMP_ENABLE) { 2798 scsi_ulto4b(calg, dcp->comp_algorithm); 2799 scsi_ulto4b(calg, dcp->decomp_algorithm); 2800 } else if (scsi_4btoul(dcp->comp_algorithm) == 0 && 2801 softc->saved_comp_algorithm != 0) { 2802 scsi_ulto4b(softc->saved_comp_algorithm, 2803 dcp->comp_algorithm); 2804 scsi_ulto4b(softc->saved_comp_algorithm, 2805 dcp->decomp_algorithm); 2806 } 2807 break; 2808 } 2809 case SA_DEVICE_CONFIGURATION_PAGE: 2810 { 2811 struct scsi_dev_conf_page *dcp = &cpage->dconf; 2812 if (calg == 0) { 2813 dcp->sel_comp_alg = SA_COMP_NONE; 2814 break; 2815 } 2816 if (calg != MT_COMP_ENABLE) { 2817 dcp->sel_comp_alg = calg; 2818 } else if (dcp->sel_comp_alg == SA_COMP_NONE && 2819 softc->saved_comp_algorithm != 0) { 2820 dcp->sel_comp_alg = softc->saved_comp_algorithm; 2821 } 2822 break; 2823 } 2824 default: 2825 /* 2826 * The drive doesn't seem to support compression, 2827 * so turn off the set compression bit. 2828 */ 2829 params_to_set &= ~SA_PARAM_COMPRESSION; 2830 xpt_print_path(periph->path); 2831 printf("device does not seem to support compression\n"); 2832 2833 /* 2834 * If that was the only thing the user wanted us to set, 2835 * clean up allocated resources and return with 2836 * 'operation not supported'. 2837 */ 2838 if (params_to_set == SA_PARAM_NONE) { 2839 free(mode_buffer, M_TEMP); 2840 xpt_release_ccb(ccb); 2841 return (ENODEV); 2842 } 2843 2844 /* 2845 * That wasn't the only thing the user wanted us to set. 2846 * So, decrease the stated mode buffer length by the 2847 * size of the compression mode page. 2848 */ 2849 mode_buffer_len -= sizeof(sa_comp_t); 2850 } 2851 } 2852 2853 /* It is safe to retry this operation */ 2854 scsi_mode_select(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, 2855 (params_to_set & SA_PARAM_COMPRESSION)? TRUE : FALSE, 2856 FALSE, mode_buffer, mode_buffer_len, SSD_FULL_SIZE, 5000); 2857 2858 error = cam_periph_runccb(ccb, saerror, 0, 2859 sense_flags, &softc->device_stats); 2860 QFRLS(ccb); 2861 2862 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 2863 int idx; 2864 char *xyz = mode_buffer; 2865 xpt_print_path(periph->path); 2866 printf("Err%d, Mode Select Data=", error); 2867 for (idx = 0; idx < mode_buffer_len; idx++) 2868 printf(" 0x%02x", xyz[idx] & 0xff); 2869 printf("\n"); 2870 } 2871 2872 2873 if (error) { 2874 /* 2875 * If we can, try without setting density/blocksize. 2876 */ 2877 if (mode_blk) { 2878 if ((params_to_set & 2879 (SA_PARAM_DENSITY|SA_PARAM_BLOCKSIZE)) == 0) { 2880 mode_blk = NULL; 2881 goto retry; 2882 } 2883 } else { 2884 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 2885 cpage = (sa_comp_t *)&mode_blk[1]; 2886 } 2887 2888 /* 2889 * If we were setting the blocksize, and that failed, we 2890 * want to set it to its original value. If we weren't 2891 * setting the blocksize, we don't want to change it. 2892 */ 2893 scsi_ulto3b(current_blocksize, mode_blk->blklen); 2894 2895 /* 2896 * Set density if requested, else preserve old density. 2897 * SCSI_SAME_DENSITY only applies to SCSI-2 or better 2898 * devices, else density we've latched up in our softc. 2899 */ 2900 if (params_to_set & SA_PARAM_DENSITY) { 2901 mode_blk->density = current_density; 2902 } else if (softc->scsi_rev > SCSI_REV_CCS) { 2903 mode_blk->density = SCSI_SAME_DENSITY; 2904 } else { 2905 mode_blk->density = softc->media_density; 2906 } 2907 2908 if (params_to_set & SA_PARAM_COMPRESSION) 2909 bcopy(ccomp, cpage, sizeof (sa_comp_t)); 2910 2911 /* 2912 * The retry count is the only CCB field that might have been 2913 * changed that we care about, so reset it back to 1. 2914 */ 2915 ccb->ccb_h.retry_count = 1; 2916 cam_periph_runccb(ccb, saerror, 0, sense_flags, 2917 &softc->device_stats); 2918 QFRLS(ccb); 2919 } 2920 2921 xpt_release_ccb(ccb); 2922 2923 if (ccomp != NULL) 2924 free(ccomp, M_TEMP); 2925 2926 if (params_to_set & SA_PARAM_COMPRESSION) { 2927 if (error) { 2928 softc->flags &= ~SA_FLAG_COMP_ENABLED; 2929 /* 2930 * Even if we get an error setting compression, 2931 * do not say that we don't support it. We could 2932 * have been wrong, or it may be media specific. 2933 * softc->flags &= ~SA_FLAG_COMP_SUPP; 2934 */ 2935 softc->saved_comp_algorithm = softc->comp_algorithm; 2936 softc->comp_algorithm = 0; 2937 } else { 2938 softc->flags |= SA_FLAG_COMP_ENABLED; 2939 softc->comp_algorithm = calg; 2940 } 2941 } 2942 2943 free(mode_buffer, M_TEMP); 2944 return (error); 2945 } 2946 2947 static void 2948 saprevent(struct cam_periph *periph, int action) 2949 { 2950 struct sa_softc *softc; 2951 union ccb *ccb; 2952 int error, sf; 2953 2954 softc = (struct sa_softc *)periph->softc; 2955 2956 if ((action == PR_ALLOW) && (softc->flags & SA_FLAG_TAPE_LOCKED) == 0) 2957 return; 2958 if ((action == PR_PREVENT) && (softc->flags & SA_FLAG_TAPE_LOCKED) != 0) 2959 return; 2960 2961 /* 2962 * We can be quiet about illegal requests. 2963 */ 2964 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 2965 sf = 0; 2966 } else 2967 sf = SF_QUIET_IR; 2968 2969 ccb = cam_periph_getccb(periph, 1); 2970 2971 /* It is safe to retry this operation */ 2972 scsi_prevent(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, action, 2973 SSD_FULL_SIZE, 100000); 2974 2975 error = cam_periph_runccb(ccb, saerror, 0, sf, &softc->device_stats); 2976 QFRLS(ccb); 2977 if (error == 0) { 2978 if (action == PR_ALLOW) 2979 softc->flags &= ~SA_FLAG_TAPE_LOCKED; 2980 else 2981 softc->flags |= SA_FLAG_TAPE_LOCKED; 2982 } 2983 2984 xpt_release_ccb(ccb); 2985 } 2986 2987 static int 2988 sarewind(struct cam_periph *periph) 2989 { 2990 union ccb *ccb; 2991 struct sa_softc *softc; 2992 int error; 2993 2994 softc = (struct sa_softc *)periph->softc; 2995 2996 ccb = cam_periph_getccb(periph, 1); 2997 2998 /* It is safe to retry this operation */ 2999 scsi_rewind(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 3000 SSD_FULL_SIZE, REWIND_TIMEOUT); 3001 3002 softc->dsreg = MTIO_DSREG_REW; 3003 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 3004 softc->dsreg = MTIO_DSREG_REST; 3005 3006 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3007 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 3008 3009 xpt_release_ccb(ccb); 3010 if (error == 0) 3011 softc->fileno = softc->blkno = (daddr_t) 0; 3012 else 3013 softc->fileno = softc->blkno = (daddr_t) -1; 3014 return (error); 3015 } 3016 3017 static int 3018 saspace(struct cam_periph *periph, int count, scsi_space_code code) 3019 { 3020 union ccb *ccb; 3021 struct sa_softc *softc; 3022 int error; 3023 3024 softc = (struct sa_softc *)periph->softc; 3025 3026 ccb = cam_periph_getccb(periph, 1); 3027 3028 /* This cannot be retried */ 3029 3030 scsi_space(&ccb->csio, 0, sadone, MSG_SIMPLE_Q_TAG, code, count, 3031 SSD_FULL_SIZE, SPACE_TIMEOUT); 3032 3033 /* 3034 * Clear residual because we will be using it. 3035 */ 3036 softc->last_ctl_resid = 0; 3037 3038 softc->dsreg = (count < 0)? MTIO_DSREG_REV : MTIO_DSREG_FWD; 3039 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 3040 softc->dsreg = MTIO_DSREG_REST; 3041 3042 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3043 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 3044 3045 xpt_release_ccb(ccb); 3046 3047 /* 3048 * If a spacing operation has failed, we need to invalidate 3049 * this mount. 3050 * 3051 * If the spacing operation was setmarks or to end of recorded data, 3052 * we no longer know our relative position. 3053 * 3054 * If the spacing operations was spacing files in reverse, we 3055 * take account of the residual, but still check against less 3056 * than zero- if we've gone negative, we must have hit BOT. 3057 * 3058 * If the spacing operations was spacing records in reverse and 3059 * we have a residual, we've either hit BOT or hit a filemark. 3060 * In the former case, we know our new record number (0). In 3061 * the latter case, we have absolutely no idea what the real 3062 * record number is- we've stopped between the end of the last 3063 * record in the previous file and the filemark that stopped 3064 * our spacing backwards. 3065 */ 3066 if (error) { 3067 softc->fileno = softc->blkno = (daddr_t) -1; 3068 } else if (code == SS_SETMARKS || code == SS_EOD) { 3069 softc->fileno = softc->blkno = (daddr_t) -1; 3070 } else if (code == SS_FILEMARKS && softc->fileno != (daddr_t) -1) { 3071 softc->fileno += (count - softc->last_ctl_resid); 3072 if (softc->fileno < 0) /* we must of hit BOT */ 3073 softc->fileno = 0; 3074 softc->blkno = 0; 3075 } else if (code == SS_BLOCKS && softc->blkno != (daddr_t) -1) { 3076 softc->blkno += (count - softc->last_ctl_resid); 3077 if (count < 0) { 3078 if (softc->last_ctl_resid || softc->blkno < 0) { 3079 if (softc->fileno == 0) { 3080 softc->blkno = 0; 3081 } else { 3082 softc->blkno = (daddr_t) -1; 3083 } 3084 } 3085 } 3086 } 3087 return (error); 3088 } 3089 3090 static int 3091 sawritefilemarks(struct cam_periph *periph, int nmarks, int setmarks) 3092 { 3093 union ccb *ccb; 3094 struct sa_softc *softc; 3095 int error, nwm = 0; 3096 3097 softc = (struct sa_softc *)periph->softc; 3098 3099 ccb = cam_periph_getccb(periph, 1); 3100 /* 3101 * Clear residual because we will be using it. 3102 */ 3103 softc->last_ctl_resid = 0; 3104 3105 softc->dsreg = MTIO_DSREG_FMK; 3106 /* this *must* not be retried */ 3107 scsi_write_filemarks(&ccb->csio, 0, sadone, MSG_SIMPLE_Q_TAG, 3108 FALSE, setmarks, nmarks, SSD_FULL_SIZE, 60000); 3109 softc->dsreg = MTIO_DSREG_REST; 3110 3111 3112 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 3113 3114 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3115 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 3116 3117 if (error == 0 && nmarks) { 3118 struct sa_softc *softc = (struct sa_softc *)periph->softc; 3119 nwm = nmarks - softc->last_ctl_resid; 3120 softc->filemarks += nwm; 3121 } 3122 3123 xpt_release_ccb(ccb); 3124 3125 /* 3126 * Update relative positions (if we're doing that). 3127 */ 3128 if (error) { 3129 softc->fileno = softc->blkno = (daddr_t) -1; 3130 } else if (softc->fileno != (daddr_t) -1) { 3131 softc->fileno += nwm; 3132 softc->blkno = 0; 3133 } 3134 return (error); 3135 } 3136 3137 static int 3138 sardpos(struct cam_periph *periph, int hard, u_int32_t *blkptr) 3139 { 3140 struct scsi_tape_position_data loc; 3141 union ccb *ccb; 3142 struct sa_softc *softc = (struct sa_softc *)periph->softc; 3143 int error; 3144 3145 /* 3146 * We try and flush any buffered writes here if we were writing 3147 * and we're trying to get hardware block position. It eats 3148 * up performance substantially, but I'm wary of drive firmware. 3149 * 3150 * I think that *logical* block position is probably okay- 3151 * but hardware block position might have to wait for data 3152 * to hit media to be valid. Caveat Emptor. 3153 */ 3154 3155 if (hard && (softc->flags & SA_FLAG_TAPE_WRITTEN)) { 3156 error = sawritefilemarks(periph, 0, 0); 3157 if (error && error != EACCES) 3158 return (error); 3159 } 3160 3161 ccb = cam_periph_getccb(periph, 1); 3162 scsi_read_position(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, 3163 hard, &loc, SSD_FULL_SIZE, 5000); 3164 softc->dsreg = MTIO_DSREG_RBSY; 3165 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 3166 softc->dsreg = MTIO_DSREG_REST; 3167 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3168 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, 0); 3169 3170 if (error == 0) { 3171 if (loc.flags & SA_RPOS_UNCERTAIN) { 3172 error = EINVAL; /* nothing is certain */ 3173 } else { 3174 *blkptr = scsi_4btoul(loc.firstblk); 3175 } 3176 } 3177 3178 xpt_release_ccb(ccb); 3179 return (error); 3180 } 3181 3182 static int 3183 sasetpos(struct cam_periph *periph, int hard, u_int32_t *blkptr) 3184 { 3185 union ccb *ccb; 3186 struct sa_softc *softc; 3187 int error; 3188 3189 /* 3190 * We used to try and flush any buffered writes here. 3191 * Now we push this onto user applications to either 3192 * flush the pending writes themselves (via a zero count 3193 * WRITE FILEMARKS command) or they can trust their tape 3194 * drive to do this correctly for them. 3195 */ 3196 3197 softc = (struct sa_softc *)periph->softc; 3198 ccb = cam_periph_getccb(periph, 1); 3199 3200 3201 scsi_set_position(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, 3202 hard, *blkptr, SSD_FULL_SIZE, 60 * 60 * 1000); 3203 3204 softc->dsreg = MTIO_DSREG_POS; 3205 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 3206 softc->dsreg = MTIO_DSREG_REST; 3207 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3208 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, 0); 3209 xpt_release_ccb(ccb); 3210 /* 3211 * Note relative file && block number position as now unknown. 3212 */ 3213 softc->fileno = softc->blkno = (daddr_t) -1; 3214 return (error); 3215 } 3216 3217 static int 3218 saretension(struct cam_periph *periph) 3219 { 3220 union ccb *ccb; 3221 struct sa_softc *softc; 3222 int error; 3223 3224 softc = (struct sa_softc *)periph->softc; 3225 3226 ccb = cam_periph_getccb(periph, 1); 3227 3228 /* It is safe to retry this operation */ 3229 scsi_load_unload(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 3230 FALSE, TRUE, TRUE, SSD_FULL_SIZE, ERASE_TIMEOUT); 3231 3232 softc->dsreg = MTIO_DSREG_TEN; 3233 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 3234 softc->dsreg = MTIO_DSREG_REST; 3235 3236 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3237 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 3238 xpt_release_ccb(ccb); 3239 if (error == 0) 3240 softc->fileno = softc->blkno = (daddr_t) 0; 3241 else 3242 softc->fileno = softc->blkno = (daddr_t) -1; 3243 return (error); 3244 } 3245 3246 static int 3247 sareservereleaseunit(struct cam_periph *periph, int reserve) 3248 { 3249 union ccb *ccb; 3250 struct sa_softc *softc; 3251 int error; 3252 3253 softc = (struct sa_softc *)periph->softc; 3254 ccb = cam_periph_getccb(periph, 1); 3255 3256 /* It is safe to retry this operation */ 3257 scsi_reserve_release_unit(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, 3258 FALSE, 0, SSD_FULL_SIZE, 5000, reserve); 3259 softc->dsreg = MTIO_DSREG_RBSY; 3260 error = cam_periph_runccb(ccb, saerror, 0, 3261 SF_RETRY_UA | SF_NO_PRINT, &softc->device_stats); 3262 softc->dsreg = MTIO_DSREG_REST; 3263 QFRLS(ccb); 3264 xpt_release_ccb(ccb); 3265 3266 /* 3267 * If the error was Illegal Request, then the device doesn't support 3268 * RESERVE/RELEASE. This is not an error. 3269 */ 3270 if (error == EINVAL) { 3271 error = 0; 3272 } 3273 3274 return (error); 3275 } 3276 3277 static int 3278 saloadunload(struct cam_periph *periph, int load) 3279 { 3280 union ccb *ccb; 3281 struct sa_softc *softc; 3282 int error; 3283 3284 softc = (struct sa_softc *)periph->softc; 3285 3286 ccb = cam_periph_getccb(periph, 1); 3287 3288 /* It is safe to retry this operation */ 3289 scsi_load_unload(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 3290 FALSE, FALSE, load, SSD_FULL_SIZE, REWIND_TIMEOUT); 3291 3292 softc->dsreg = (load)? MTIO_DSREG_LD : MTIO_DSREG_UNL; 3293 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 3294 softc->dsreg = MTIO_DSREG_REST; 3295 QFRLS(ccb); 3296 xpt_release_ccb(ccb); 3297 3298 if (error || load == 0) 3299 softc->fileno = softc->blkno = (daddr_t) -1; 3300 else if (error == 0) 3301 softc->fileno = softc->blkno = (daddr_t) 0; 3302 return (error); 3303 } 3304 3305 static int 3306 saerase(struct cam_periph *periph, int longerase) 3307 { 3308 3309 union ccb *ccb; 3310 struct sa_softc *softc; 3311 int error; 3312 3313 softc = (struct sa_softc *)periph->softc; 3314 3315 ccb = cam_periph_getccb(periph, 1); 3316 3317 scsi_erase(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, FALSE, longerase, 3318 SSD_FULL_SIZE, ERASE_TIMEOUT); 3319 3320 softc->dsreg = MTIO_DSREG_ZER; 3321 error = cam_periph_runccb(ccb, saerror, 0, 0, &softc->device_stats); 3322 softc->dsreg = MTIO_DSREG_REST; 3323 3324 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3325 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 3326 xpt_release_ccb(ccb); 3327 return (error); 3328 } 3329 3330 #endif /* _KERNEL */ 3331 3332 /* 3333 * Read tape block limits command. 3334 */ 3335 void 3336 scsi_read_block_limits(struct ccb_scsiio *csio, u_int32_t retries, 3337 void (*cbfcnp)(struct cam_periph *, union ccb *), 3338 u_int8_t tag_action, 3339 struct scsi_read_block_limits_data *rlimit_buf, 3340 u_int8_t sense_len, u_int32_t timeout) 3341 { 3342 struct scsi_read_block_limits *scsi_cmd; 3343 3344 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_IN, tag_action, 3345 (u_int8_t *)rlimit_buf, sizeof(*rlimit_buf), sense_len, 3346 sizeof(*scsi_cmd), timeout); 3347 3348 scsi_cmd = (struct scsi_read_block_limits *)&csio->cdb_io.cdb_bytes; 3349 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3350 scsi_cmd->opcode = READ_BLOCK_LIMITS; 3351 } 3352 3353 void 3354 scsi_sa_read_write(struct ccb_scsiio *csio, u_int32_t retries, 3355 void (*cbfcnp)(struct cam_periph *, union ccb *), 3356 u_int8_t tag_action, int readop, int sli, 3357 int fixed, u_int32_t length, u_int8_t *data_ptr, 3358 u_int32_t dxfer_len, u_int8_t sense_len, u_int32_t timeout) 3359 { 3360 struct scsi_sa_rw *scsi_cmd; 3361 3362 scsi_cmd = (struct scsi_sa_rw *)&csio->cdb_io.cdb_bytes; 3363 scsi_cmd->opcode = readop ? SA_READ : SA_WRITE; 3364 scsi_cmd->sli_fixed = 0; 3365 if (sli && readop) 3366 scsi_cmd->sli_fixed |= SAR_SLI; 3367 if (fixed) 3368 scsi_cmd->sli_fixed |= SARW_FIXED; 3369 scsi_ulto3b(length, scsi_cmd->length); 3370 scsi_cmd->control = 0; 3371 3372 cam_fill_csio(csio, retries, cbfcnp, readop ? CAM_DIR_IN : CAM_DIR_OUT, 3373 tag_action, data_ptr, dxfer_len, sense_len, 3374 sizeof(*scsi_cmd), timeout); 3375 } 3376 3377 void 3378 scsi_load_unload(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 eot, 3381 int reten, int load, u_int8_t sense_len, 3382 u_int32_t timeout) 3383 { 3384 struct scsi_load_unload *scsi_cmd; 3385 3386 scsi_cmd = (struct scsi_load_unload *)&csio->cdb_io.cdb_bytes; 3387 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3388 scsi_cmd->opcode = LOAD_UNLOAD; 3389 if (immediate) 3390 scsi_cmd->immediate = SLU_IMMED; 3391 if (eot) 3392 scsi_cmd->eot_reten_load |= SLU_EOT; 3393 if (reten) 3394 scsi_cmd->eot_reten_load |= SLU_RETEN; 3395 if (load) 3396 scsi_cmd->eot_reten_load |= SLU_LOAD; 3397 3398 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, 3399 NULL, 0, sense_len, sizeof(*scsi_cmd), timeout); 3400 } 3401 3402 void 3403 scsi_rewind(struct ccb_scsiio *csio, u_int32_t retries, 3404 void (*cbfcnp)(struct cam_periph *, union ccb *), 3405 u_int8_t tag_action, int immediate, u_int8_t sense_len, 3406 u_int32_t timeout) 3407 { 3408 struct scsi_rewind *scsi_cmd; 3409 3410 scsi_cmd = (struct scsi_rewind *)&csio->cdb_io.cdb_bytes; 3411 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3412 scsi_cmd->opcode = REWIND; 3413 if (immediate) 3414 scsi_cmd->immediate = SREW_IMMED; 3415 3416 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3417 0, sense_len, sizeof(*scsi_cmd), timeout); 3418 } 3419 3420 void 3421 scsi_space(struct ccb_scsiio *csio, u_int32_t retries, 3422 void (*cbfcnp)(struct cam_periph *, union ccb *), 3423 u_int8_t tag_action, scsi_space_code code, 3424 u_int32_t count, u_int8_t sense_len, u_int32_t timeout) 3425 { 3426 struct scsi_space *scsi_cmd; 3427 3428 scsi_cmd = (struct scsi_space *)&csio->cdb_io.cdb_bytes; 3429 scsi_cmd->opcode = SPACE; 3430 scsi_cmd->code = code; 3431 scsi_ulto3b(count, scsi_cmd->count); 3432 scsi_cmd->control = 0; 3433 3434 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3435 0, sense_len, sizeof(*scsi_cmd), timeout); 3436 } 3437 3438 void 3439 scsi_write_filemarks(struct ccb_scsiio *csio, u_int32_t retries, 3440 void (*cbfcnp)(struct cam_periph *, union ccb *), 3441 u_int8_t tag_action, int immediate, int setmark, 3442 u_int32_t num_marks, u_int8_t sense_len, 3443 u_int32_t timeout) 3444 { 3445 struct scsi_write_filemarks *scsi_cmd; 3446 3447 scsi_cmd = (struct scsi_write_filemarks *)&csio->cdb_io.cdb_bytes; 3448 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3449 scsi_cmd->opcode = WRITE_FILEMARKS; 3450 if (immediate) 3451 scsi_cmd->byte2 |= SWFMRK_IMMED; 3452 if (setmark) 3453 scsi_cmd->byte2 |= SWFMRK_WSMK; 3454 3455 scsi_ulto3b(num_marks, scsi_cmd->num_marks); 3456 3457 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3458 0, sense_len, sizeof(*scsi_cmd), timeout); 3459 } 3460 3461 /* 3462 * The reserve and release unit commands differ only by their opcodes. 3463 */ 3464 void 3465 scsi_reserve_release_unit(struct ccb_scsiio *csio, u_int32_t retries, 3466 void (*cbfcnp)(struct cam_periph *, union ccb *), 3467 u_int8_t tag_action, int third_party, 3468 int third_party_id, u_int8_t sense_len, 3469 u_int32_t timeout, int reserve) 3470 { 3471 struct scsi_reserve_release_unit *scsi_cmd; 3472 3473 scsi_cmd = (struct scsi_reserve_release_unit *)&csio->cdb_io.cdb_bytes; 3474 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3475 3476 if (reserve) 3477 scsi_cmd->opcode = RESERVE_UNIT; 3478 else 3479 scsi_cmd->opcode = RELEASE_UNIT; 3480 3481 if (third_party) { 3482 scsi_cmd->lun_thirdparty |= SRRU_3RD_PARTY; 3483 scsi_cmd->lun_thirdparty |= 3484 ((third_party_id << SRRU_3RD_SHAMT) & SRRU_3RD_MASK); 3485 } 3486 3487 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3488 0, sense_len, sizeof(*scsi_cmd), timeout); 3489 } 3490 3491 void 3492 scsi_erase(struct ccb_scsiio *csio, u_int32_t retries, 3493 void (*cbfcnp)(struct cam_periph *, union ccb *), 3494 u_int8_t tag_action, int immediate, int long_erase, 3495 u_int8_t sense_len, u_int32_t timeout) 3496 { 3497 struct scsi_erase *scsi_cmd; 3498 3499 scsi_cmd = (struct scsi_erase *)&csio->cdb_io.cdb_bytes; 3500 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3501 3502 scsi_cmd->opcode = ERASE; 3503 3504 if (immediate) 3505 scsi_cmd->lun_imm_long |= SE_IMMED; 3506 3507 if (long_erase) 3508 scsi_cmd->lun_imm_long |= SE_LONG; 3509 3510 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3511 0, sense_len, sizeof(*scsi_cmd), timeout); 3512 } 3513 3514 /* 3515 * Read Tape Position command. 3516 */ 3517 void 3518 scsi_read_position(struct ccb_scsiio *csio, u_int32_t retries, 3519 void (*cbfcnp)(struct cam_periph *, union ccb *), 3520 u_int8_t tag_action, int hardsoft, 3521 struct scsi_tape_position_data *sbp, 3522 u_int8_t sense_len, u_int32_t timeout) 3523 { 3524 struct scsi_tape_read_position *scmd; 3525 3526 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_IN, tag_action, 3527 (u_int8_t *)sbp, sizeof (*sbp), sense_len, sizeof(*scmd), timeout); 3528 scmd = (struct scsi_tape_read_position *)&csio->cdb_io.cdb_bytes; 3529 bzero(scmd, sizeof(*scmd)); 3530 scmd->opcode = READ_POSITION; 3531 scmd->byte1 = hardsoft; 3532 } 3533 3534 /* 3535 * Set Tape Position command. 3536 */ 3537 void 3538 scsi_set_position(struct ccb_scsiio *csio, u_int32_t retries, 3539 void (*cbfcnp)(struct cam_periph *, union ccb *), 3540 u_int8_t tag_action, int hardsoft, u_int32_t blkno, 3541 u_int8_t sense_len, u_int32_t timeout) 3542 { 3543 struct scsi_tape_locate *scmd; 3544 3545 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, 3546 (u_int8_t *)NULL, 0, sense_len, sizeof(*scmd), timeout); 3547 scmd = (struct scsi_tape_locate *)&csio->cdb_io.cdb_bytes; 3548 bzero(scmd, sizeof(*scmd)); 3549 scmd->opcode = LOCATE; 3550 if (hardsoft) 3551 scmd->byte1 |= SA_SPOS_BT; 3552 scsi_ulto4b(blkno, scmd->blkaddr); 3553 } 3554