1 /*- 2 * Implementation of SCSI Sequential Access Peripheral driver for CAM. 3 * 4 * Copyright (c) 1999, 2000 Matthew Jacob 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions, and the following disclaimer, 12 * without modification, immediately at the beginning of the file. 13 * 2. The name of the author may not be used to endorse or promote products 14 * derived from this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR 20 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #include <sys/cdefs.h> 30 __FBSDID("$FreeBSD$"); 31 32 #include <sys/param.h> 33 #include <sys/queue.h> 34 #ifdef _KERNEL 35 #include <sys/systm.h> 36 #include <sys/kernel.h> 37 #endif 38 #include <sys/types.h> 39 #include <sys/time.h> 40 #include <sys/bio.h> 41 #include <sys/limits.h> 42 #include <sys/malloc.h> 43 #include <sys/mtio.h> 44 #ifdef _KERNEL 45 #include <sys/conf.h> 46 #endif 47 #include <sys/fcntl.h> 48 #include <sys/devicestat.h> 49 50 #ifndef _KERNEL 51 #include <stdio.h> 52 #include <string.h> 53 #endif 54 55 #include <cam/cam.h> 56 #include <cam/cam_ccb.h> 57 #include <cam/cam_periph.h> 58 #include <cam/cam_xpt_periph.h> 59 #include <cam/cam_debug.h> 60 61 #include <cam/scsi/scsi_all.h> 62 #include <cam/scsi/scsi_message.h> 63 #include <cam/scsi/scsi_sa.h> 64 65 #ifdef _KERNEL 66 67 #include <opt_sa.h> 68 69 #ifndef SA_IO_TIMEOUT 70 #define SA_IO_TIMEOUT 4 71 #endif 72 #ifndef SA_SPACE_TIMEOUT 73 #define SA_SPACE_TIMEOUT 1 * 60 74 #endif 75 #ifndef SA_REWIND_TIMEOUT 76 #define SA_REWIND_TIMEOUT 2 * 60 77 #endif 78 #ifndef SA_ERASE_TIMEOUT 79 #define SA_ERASE_TIMEOUT 4 * 60 80 #endif 81 82 #define SCSIOP_TIMEOUT (60 * 1000) /* not an option */ 83 84 #define IO_TIMEOUT (SA_IO_TIMEOUT * 60 * 1000) 85 #define REWIND_TIMEOUT (SA_REWIND_TIMEOUT * 60 * 1000) 86 #define ERASE_TIMEOUT (SA_ERASE_TIMEOUT * 60 * 1000) 87 #define SPACE_TIMEOUT (SA_SPACE_TIMEOUT * 60 * 1000) 88 89 /* 90 * Additional options that can be set for config: SA_1FM_AT_EOT 91 */ 92 93 #ifndef UNUSED_PARAMETER 94 #define UNUSED_PARAMETER(x) x = x 95 #endif 96 97 #define QFRLS(ccb) \ 98 if (((ccb)->ccb_h.status & CAM_DEV_QFRZN) != 0) \ 99 cam_release_devq((ccb)->ccb_h.path, 0, 0, 0, FALSE) 100 101 /* 102 * Driver states 103 */ 104 105 MALLOC_DEFINE(M_SCSISA, "SCSI sa", "SCSI sequential access buffers"); 106 107 typedef enum { 108 SA_STATE_NORMAL, SA_STATE_ABNORMAL 109 } sa_state; 110 111 #define ccb_pflags ppriv_field0 112 #define ccb_bp ppriv_ptr1 113 114 #define SA_CCB_BUFFER_IO 0x0 115 #define SA_CCB_WAITING 0x1 116 #define SA_CCB_TYPEMASK 0x1 117 #define SA_POSITION_UPDATED 0x2 118 119 #define Set_CCB_Type(x, type) \ 120 x->ccb_h.ccb_pflags &= ~SA_CCB_TYPEMASK; \ 121 x->ccb_h.ccb_pflags |= type 122 123 #define CCB_Type(x) (x->ccb_h.ccb_pflags & SA_CCB_TYPEMASK) 124 125 126 127 typedef enum { 128 SA_FLAG_OPEN = 0x0001, 129 SA_FLAG_FIXED = 0x0002, 130 SA_FLAG_TAPE_LOCKED = 0x0004, 131 SA_FLAG_TAPE_MOUNTED = 0x0008, 132 SA_FLAG_TAPE_WP = 0x0010, 133 SA_FLAG_TAPE_WRITTEN = 0x0020, 134 SA_FLAG_EOM_PENDING = 0x0040, 135 SA_FLAG_EIO_PENDING = 0x0080, 136 SA_FLAG_EOF_PENDING = 0x0100, 137 SA_FLAG_ERR_PENDING = (SA_FLAG_EOM_PENDING|SA_FLAG_EIO_PENDING| 138 SA_FLAG_EOF_PENDING), 139 SA_FLAG_INVALID = 0x0200, 140 SA_FLAG_COMP_ENABLED = 0x0400, 141 SA_FLAG_COMP_SUPP = 0x0800, 142 SA_FLAG_COMP_UNSUPP = 0x1000, 143 SA_FLAG_TAPE_FROZEN = 0x2000 144 } sa_flags; 145 146 typedef enum { 147 SA_MODE_REWIND = 0x00, 148 SA_MODE_NOREWIND = 0x01, 149 SA_MODE_OFFLINE = 0x02 150 } sa_mode; 151 152 typedef enum { 153 SA_PARAM_NONE = 0x00, 154 SA_PARAM_BLOCKSIZE = 0x01, 155 SA_PARAM_DENSITY = 0x02, 156 SA_PARAM_COMPRESSION = 0x04, 157 SA_PARAM_BUFF_MODE = 0x08, 158 SA_PARAM_NUMBLOCKS = 0x10, 159 SA_PARAM_WP = 0x20, 160 SA_PARAM_SPEED = 0x40, 161 SA_PARAM_ALL = 0x7f 162 } sa_params; 163 164 typedef enum { 165 SA_QUIRK_NONE = 0x00, 166 SA_QUIRK_NOCOMP = 0x01, /* Can't deal with compression at all */ 167 SA_QUIRK_FIXED = 0x02, /* Force fixed mode */ 168 SA_QUIRK_VARIABLE = 0x04, /* Force variable mode */ 169 SA_QUIRK_2FM = 0x08, /* Needs Two File Marks at EOD */ 170 SA_QUIRK_1FM = 0x10, /* No more than 1 File Mark at EOD */ 171 SA_QUIRK_NODREAD = 0x20, /* Don't try and dummy read density */ 172 SA_QUIRK_NO_MODESEL = 0x40, /* Don't do mode select at all */ 173 SA_QUIRK_NO_CPAGE = 0x80 /* Don't use DEVICE COMPRESSION page */ 174 } sa_quirks; 175 176 /* units are bits 4-7, 16-21 (1024 units) */ 177 #define SAUNIT(DEV) \ 178 (((minor(DEV) & 0xF0) >> 4) | ((minor(DEV) & 0x3f0000) >> 16)) 179 180 #define SAMODE(z) ((minor(z) & 0x3)) 181 #define SADENSITY(z) (((minor(z) >> 2) & 0x3)) 182 #define SA_IS_CTRL(z) (minor(z) & (1 << 29)) 183 184 #define SA_NOT_CTLDEV 0 185 #define SA_CTLDEV 1 186 187 #define SA_ATYPE_R 0 188 #define SA_ATYPE_NR 1 189 #define SA_ATYPE_ER 2 190 191 #define SAMINOR(ctl, unit, mode, access) \ 192 ((ctl << 29) | ((unit & 0x3f0) << 16) | ((unit & 0xf) << 4) | \ 193 (mode << 0x2) | (access & 0x3)) 194 195 #define SA_NUM_MODES 4 196 struct sa_devs { 197 struct cdev *ctl_dev; 198 struct sa_mode_devs { 199 struct cdev *r_dev; 200 struct cdev *nr_dev; 201 struct cdev *er_dev; 202 } mode_devs[SA_NUM_MODES]; 203 }; 204 205 struct sa_softc { 206 sa_state state; 207 sa_flags flags; 208 sa_quirks quirks; 209 struct bio_queue_head bio_queue; 210 int queue_count; 211 struct devstat *device_stats; 212 struct sa_devs devs; 213 int blk_gran; 214 int blk_mask; 215 int blk_shift; 216 u_int32_t max_blk; 217 u_int32_t min_blk; 218 u_int32_t comp_algorithm; 219 u_int32_t saved_comp_algorithm; 220 u_int32_t media_blksize; 221 u_int32_t last_media_blksize; 222 u_int32_t media_numblks; 223 u_int8_t media_density; 224 u_int8_t speed; 225 u_int8_t scsi_rev; 226 u_int8_t dsreg; /* mtio mt_dsreg, redux */ 227 int buffer_mode; 228 int filemarks; 229 union ccb saved_ccb; 230 int last_resid_was_io; 231 232 /* 233 * Relative to BOT Location. 234 */ 235 daddr_t fileno; 236 daddr_t blkno; 237 238 /* 239 * Latched Error Info 240 */ 241 struct { 242 struct scsi_sense_data _last_io_sense; 243 u_int32_t _last_io_resid; 244 u_int8_t _last_io_cdb[CAM_MAX_CDBLEN]; 245 struct scsi_sense_data _last_ctl_sense; 246 u_int32_t _last_ctl_resid; 247 u_int8_t _last_ctl_cdb[CAM_MAX_CDBLEN]; 248 #define last_io_sense errinfo._last_io_sense 249 #define last_io_resid errinfo._last_io_resid 250 #define last_io_cdb errinfo._last_io_cdb 251 #define last_ctl_sense errinfo._last_ctl_sense 252 #define last_ctl_resid errinfo._last_ctl_resid 253 #define last_ctl_cdb errinfo._last_ctl_cdb 254 } errinfo; 255 /* 256 * Misc other flags/state 257 */ 258 u_int32_t 259 : 29, 260 open_rdonly : 1, /* open read-only */ 261 open_pending_mount : 1, /* open pending mount */ 262 ctrl_mode : 1; /* control device open */ 263 }; 264 265 struct sa_quirk_entry { 266 struct scsi_inquiry_pattern inq_pat; /* matching pattern */ 267 sa_quirks quirks; /* specific quirk type */ 268 u_int32_t prefblk; /* preferred blocksize when in fixed mode */ 269 }; 270 271 static struct sa_quirk_entry sa_quirk_table[] = 272 { 273 { 274 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "OnStream", 275 "ADR*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_NODREAD | 276 SA_QUIRK_1FM|SA_QUIRK_NO_MODESEL, 32768 277 }, 278 { 279 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 280 "Python 06408*", "*"}, SA_QUIRK_NODREAD, 0 281 }, 282 { 283 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 284 "Python 25601*", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_NODREAD, 0 285 }, 286 { 287 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 288 "Python*", "*"}, SA_QUIRK_NODREAD, 0 289 }, 290 { 291 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 292 "VIPER 150*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 293 }, 294 { 295 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 296 "VIPER 2525 25462", "-011"}, 297 SA_QUIRK_NOCOMP|SA_QUIRK_1FM|SA_QUIRK_NODREAD, 0 298 }, 299 { 300 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "ARCHIVE", 301 "VIPER 2525*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 1024 302 }, 303 #if 0 304 { 305 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 306 "C15*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_NO_CPAGE, 0, 307 }, 308 #endif 309 { 310 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 311 "C56*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 312 }, 313 { 314 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 315 "T20*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 316 }, 317 { 318 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 319 "T4000*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 320 }, 321 { 322 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "HP", 323 "HP-88780*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 324 }, 325 { 326 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "KENNEDY", 327 "*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 328 }, 329 { 330 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "M4 DATA", 331 "123107 SCSI*", "*"}, SA_QUIRK_VARIABLE|SA_QUIRK_2FM, 0 332 }, 333 { /* jreynold@primenet.com */ 334 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "Seagate", 335 "STT8000N*", "*"}, SA_QUIRK_1FM, 0 336 }, 337 { /* mike@sentex.net */ 338 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "Seagate", 339 "STT20000*", "*"}, SA_QUIRK_1FM, 0 340 }, 341 { 342 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 343 " TDC 3600", "U07:"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 344 }, 345 { 346 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 347 " TDC 3800", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 348 }, 349 { 350 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 351 " TDC 4100", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 352 }, 353 { 354 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 355 " TDC 4200", "*"}, SA_QUIRK_NOCOMP|SA_QUIRK_1FM, 512 356 }, 357 { 358 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "TANDBERG", 359 " SLR*", "*"}, SA_QUIRK_1FM, 0 360 }, 361 { 362 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "WANGTEK", 363 "5525ES*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 512 364 }, 365 { 366 { T_SEQUENTIAL, SIP_MEDIA_REMOVABLE, "WANGTEK", 367 "51000*", "*"}, SA_QUIRK_FIXED|SA_QUIRK_1FM, 1024 368 } 369 }; 370 371 static d_open_t saopen; 372 static d_close_t saclose; 373 static d_strategy_t sastrategy; 374 static d_ioctl_t saioctl; 375 static periph_init_t sainit; 376 static periph_ctor_t saregister; 377 static periph_oninv_t saoninvalidate; 378 static periph_dtor_t sacleanup; 379 static periph_start_t sastart; 380 static void saasync(void *callback_arg, u_int32_t code, 381 struct cam_path *path, void *arg); 382 static void sadone(struct cam_periph *periph, 383 union ccb *start_ccb); 384 static int saerror(union ccb *ccb, u_int32_t cam_flags, 385 u_int32_t sense_flags); 386 static int samarkswanted(struct cam_periph *); 387 static int sacheckeod(struct cam_periph *periph); 388 static int sagetparams(struct cam_periph *periph, 389 sa_params params_to_get, 390 u_int32_t *blocksize, u_int8_t *density, 391 u_int32_t *numblocks, int *buff_mode, 392 u_int8_t *write_protect, u_int8_t *speed, 393 int *comp_supported, int *comp_enabled, 394 u_int32_t *comp_algorithm, 395 sa_comp_t *comp_page); 396 static int sasetparams(struct cam_periph *periph, 397 sa_params params_to_set, 398 u_int32_t blocksize, u_int8_t density, 399 u_int32_t comp_algorithm, 400 u_int32_t sense_flags); 401 static void saprevent(struct cam_periph *periph, int action); 402 static int sarewind(struct cam_periph *periph); 403 static int saspace(struct cam_periph *periph, int count, 404 scsi_space_code code); 405 static int samount(struct cam_periph *, int, struct cdev *); 406 static int saretension(struct cam_periph *periph); 407 static int sareservereleaseunit(struct cam_periph *periph, 408 int reserve); 409 static int saloadunload(struct cam_periph *periph, int load); 410 static int saerase(struct cam_periph *periph, int longerase); 411 static int sawritefilemarks(struct cam_periph *periph, 412 int nmarks, int setmarks); 413 static int sardpos(struct cam_periph *periph, int, u_int32_t *); 414 static int sasetpos(struct cam_periph *periph, int, u_int32_t *); 415 416 417 static struct periph_driver sadriver = 418 { 419 sainit, "sa", 420 TAILQ_HEAD_INITIALIZER(sadriver.units), /* generation */ 0 421 }; 422 423 PERIPHDRIVER_DECLARE(sa, sadriver); 424 425 /* For 2.2-stable support */ 426 #ifndef D_TAPE 427 #define D_TAPE 0 428 #endif 429 430 431 static struct cdevsw sa_cdevsw = { 432 .d_version = D_VERSION, 433 .d_open = saopen, 434 .d_close = saclose, 435 .d_read = physread, 436 .d_write = physwrite, 437 .d_ioctl = saioctl, 438 .d_strategy = sastrategy, 439 .d_name = "sa", 440 .d_flags = D_TAPE | D_NEEDGIANT, 441 }; 442 443 static int 444 saopen(struct cdev *dev, int flags, int fmt, struct thread *td) 445 { 446 struct cam_periph *periph; 447 struct sa_softc *softc; 448 int unit; 449 int error; 450 451 unit = SAUNIT(dev); 452 453 periph = (struct cam_periph *)dev->si_drv1; 454 if (cam_periph_acquire(periph) != CAM_REQ_CMP) { 455 return (ENXIO); 456 } 457 458 cam_periph_lock(periph); 459 460 softc = (struct sa_softc *)periph->softc; 461 462 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE|CAM_DEBUG_INFO, 463 ("saopen(%d): dev=0x%x softc=0x%x\n", unit, unit, softc->flags)); 464 465 if (SA_IS_CTRL(dev)) { 466 softc->ctrl_mode = 1; 467 cam_periph_unlock(periph); 468 return (0); 469 } 470 471 if ((error = cam_periph_hold(periph, PRIBIO|PCATCH)) != 0) { 472 cam_periph_unlock(periph); 473 cam_periph_release(periph); 474 return (error); 475 } 476 477 if (softc->flags & SA_FLAG_OPEN) { 478 error = EBUSY; 479 } else if (softc->flags & SA_FLAG_INVALID) { 480 error = ENXIO; 481 } else { 482 /* 483 * Preserve whether this is a read_only open. 484 */ 485 softc->open_rdonly = (flags & O_RDWR) == O_RDONLY; 486 487 /* 488 * The function samount ensures media is loaded and ready. 489 * It also does a device RESERVE if the tape isn't yet mounted. 490 * 491 * If the mount fails and this was a non-blocking open, 492 * make this a 'open_pending_mount' action. 493 */ 494 error = samount(periph, flags, dev); 495 if (error && (flags & O_NONBLOCK)) { 496 softc->flags |= SA_FLAG_OPEN; 497 softc->open_pending_mount = 1; 498 cam_periph_unhold(periph); 499 cam_periph_unlock(periph); 500 return (0); 501 } 502 } 503 504 if (error) { 505 cam_periph_unhold(periph); 506 cam_periph_unlock(periph); 507 cam_periph_release(periph); 508 return (error); 509 } 510 511 saprevent(periph, PR_PREVENT); 512 softc->flags |= SA_FLAG_OPEN; 513 514 cam_periph_unhold(periph); 515 cam_periph_unlock(periph); 516 return (error); 517 } 518 519 static int 520 saclose(struct cdev *dev, int flag, int fmt, struct thread *td) 521 { 522 struct cam_periph *periph; 523 struct sa_softc *softc; 524 int unit, mode, error, writing, tmp; 525 int closedbits = SA_FLAG_OPEN; 526 527 unit = SAUNIT(dev); 528 mode = SAMODE(dev); 529 periph = (struct cam_periph *)dev->si_drv1; 530 if (periph == NULL) 531 return (ENXIO); 532 533 cam_periph_lock(periph); 534 535 softc = (struct sa_softc *)periph->softc; 536 537 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE|CAM_DEBUG_INFO, 538 ("saclose(%d): dev=0x%x softc=0x%x\n", unit, unit, softc->flags)); 539 540 541 softc->open_rdonly = 0; 542 if (SA_IS_CTRL(dev)) { 543 softc->ctrl_mode = 0; 544 cam_periph_unlock(periph); 545 cam_periph_release(periph); 546 return (0); 547 } 548 549 if (softc->open_pending_mount) { 550 softc->flags &= ~SA_FLAG_OPEN; 551 softc->open_pending_mount = 0; 552 cam_periph_unlock(periph); 553 cam_periph_release(periph); 554 return (0); 555 } 556 557 if ((error = cam_periph_hold(periph, PRIBIO)) != 0) { 558 cam_periph_unlock(periph); 559 return (error); 560 } 561 562 /* 563 * Were we writing the tape? 564 */ 565 writing = (softc->flags & SA_FLAG_TAPE_WRITTEN) != 0; 566 567 /* 568 * See whether or not we need to write filemarks. If this 569 * fails, we probably have to assume we've lost tape 570 * position. 571 */ 572 error = sacheckeod(periph); 573 if (error) { 574 xpt_print(periph->path, 575 "failed to write terminating filemark(s)\n"); 576 softc->flags |= SA_FLAG_TAPE_FROZEN; 577 } 578 579 /* 580 * Whatever we end up doing, allow users to eject tapes from here on. 581 */ 582 saprevent(periph, PR_ALLOW); 583 584 /* 585 * Decide how to end... 586 */ 587 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) { 588 closedbits |= SA_FLAG_TAPE_FROZEN; 589 } else switch (mode) { 590 case SA_MODE_OFFLINE: 591 /* 592 * An 'offline' close is an unconditional release of 593 * frozen && mount conditions, irrespective of whether 594 * these operations succeeded. The reason for this is 595 * to allow at least some kind of programmatic way 596 * around our state getting all fouled up. If somebody 597 * issues an 'offline' command, that will be allowed 598 * to clear state. 599 */ 600 (void) sarewind(periph); 601 (void) saloadunload(periph, FALSE); 602 closedbits |= SA_FLAG_TAPE_MOUNTED|SA_FLAG_TAPE_FROZEN; 603 break; 604 case SA_MODE_REWIND: 605 /* 606 * If the rewind fails, return an error- if anyone cares, 607 * but not overwriting any previous error. 608 * 609 * We don't clear the notion of mounted here, but we do 610 * clear the notion of frozen if we successfully rewound. 611 */ 612 tmp = sarewind(periph); 613 if (tmp) { 614 if (error != 0) 615 error = tmp; 616 } else { 617 closedbits |= SA_FLAG_TAPE_FROZEN; 618 } 619 break; 620 case SA_MODE_NOREWIND: 621 /* 622 * If we're not rewinding/unloading the tape, find out 623 * whether we need to back up over one of two filemarks 624 * we wrote (if we wrote two filemarks) so that appends 625 * from this point on will be sane. 626 */ 627 if (error == 0 && writing && (softc->quirks & SA_QUIRK_2FM)) { 628 tmp = saspace(periph, -1, SS_FILEMARKS); 629 if (tmp) { 630 xpt_print(periph->path, "unable to backspace " 631 "over one of double filemarks at end of " 632 "tape\n"); 633 xpt_print(periph->path, "it is possible that " 634 "this device needs a SA_QUIRK_1FM quirk set" 635 "for it\n"); 636 softc->flags |= SA_FLAG_TAPE_FROZEN; 637 } 638 } 639 break; 640 default: 641 xpt_print(periph->path, "unknown mode 0x%x in saclose\n", mode); 642 /* NOTREACHED */ 643 break; 644 } 645 646 /* 647 * We wish to note here that there are no more filemarks to be written. 648 */ 649 softc->filemarks = 0; 650 softc->flags &= ~SA_FLAG_TAPE_WRITTEN; 651 652 /* 653 * And we are no longer open for business. 654 */ 655 softc->flags &= ~closedbits; 656 657 /* 658 * Inform users if tape state if frozen.... 659 */ 660 if (softc->flags & SA_FLAG_TAPE_FROZEN) { 661 xpt_print(periph->path, "tape is now frozen- use an OFFLINE, " 662 "REWIND or MTEOM command to clear this state.\n"); 663 } 664 665 /* release the device if it is no longer mounted */ 666 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) 667 sareservereleaseunit(periph, FALSE); 668 669 cam_periph_unhold(periph); 670 cam_periph_unlock(periph); 671 cam_periph_release(periph); 672 673 return (error); 674 } 675 676 /* 677 * Actually translate the requested transfer into one the physical driver 678 * can understand. The transfer is described by a buf and will include 679 * only one physical transfer. 680 */ 681 static void 682 sastrategy(struct bio *bp) 683 { 684 struct cam_periph *periph; 685 struct sa_softc *softc; 686 687 bp->bio_resid = bp->bio_bcount; 688 if (SA_IS_CTRL(bp->bio_dev)) { 689 biofinish(bp, NULL, EINVAL); 690 return; 691 } 692 periph = (struct cam_periph *)bp->bio_dev->si_drv1; 693 if (periph == NULL) { 694 biofinish(bp, NULL, ENXIO); 695 return; 696 } 697 cam_periph_lock(periph); 698 699 softc = (struct sa_softc *)periph->softc; 700 701 if (softc->flags & SA_FLAG_INVALID) { 702 cam_periph_unlock(periph); 703 biofinish(bp, NULL, ENXIO); 704 return; 705 } 706 707 if (softc->flags & SA_FLAG_TAPE_FROZEN) { 708 cam_periph_unlock(periph); 709 biofinish(bp, NULL, EPERM); 710 return; 711 } 712 713 /* 714 * This should actually never occur as the write(2) 715 * system call traps attempts to write to a read-only 716 * file descriptor. 717 */ 718 if (bp->bio_cmd == BIO_WRITE && softc->open_rdonly) { 719 cam_periph_unlock(periph); 720 biofinish(bp, NULL, EBADF); 721 return; 722 } 723 724 if (softc->open_pending_mount) { 725 int error = samount(periph, 0, bp->bio_dev); 726 if (error) { 727 cam_periph_unlock(periph); 728 biofinish(bp, NULL, ENXIO); 729 return; 730 } 731 saprevent(periph, PR_PREVENT); 732 softc->open_pending_mount = 0; 733 } 734 735 736 /* 737 * If it's a null transfer, return immediately 738 */ 739 if (bp->bio_bcount == 0) { 740 cam_periph_unlock(periph); 741 biodone(bp); 742 return; 743 } 744 745 /* valid request? */ 746 if (softc->flags & SA_FLAG_FIXED) { 747 /* 748 * Fixed block device. The byte count must 749 * be a multiple of our block size. 750 */ 751 if (((softc->blk_mask != ~0) && 752 ((bp->bio_bcount & softc->blk_mask) != 0)) || 753 ((softc->blk_mask == ~0) && 754 ((bp->bio_bcount % softc->min_blk) != 0))) { 755 xpt_print(periph->path, "Invalid request. Fixed block " 756 "device requests must be a multiple of %d bytes\n", 757 softc->min_blk); 758 cam_periph_unlock(periph); 759 biofinish(bp, NULL, EINVAL); 760 return; 761 } 762 } else if ((bp->bio_bcount > softc->max_blk) || 763 (bp->bio_bcount < softc->min_blk) || 764 (bp->bio_bcount & softc->blk_mask) != 0) { 765 766 xpt_print_path(periph->path); 767 printf("Invalid request. Variable block " 768 "device requests must be "); 769 if (softc->blk_mask != 0) { 770 printf("a multiple of %d ", (0x1 << softc->blk_gran)); 771 } 772 printf("between %d and %d bytes\n", softc->min_blk, 773 softc->max_blk); 774 cam_periph_unlock(periph); 775 biofinish(bp, NULL, EINVAL); 776 return; 777 } 778 779 /* 780 * Place it at the end of the queue. 781 */ 782 bioq_insert_tail(&softc->bio_queue, bp); 783 softc->queue_count++; 784 #if 0 785 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 786 ("sastrategy: queuing a %ld %s byte %s\n", bp->bio_bcount, 787 (softc->flags & SA_FLAG_FIXED)? "fixed" : "variable", 788 (bp->bio_cmd == BIO_READ)? "read" : "write")); 789 #endif 790 if (softc->queue_count > 1) { 791 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 792 ("sastrategy: queue count now %d\n", softc->queue_count)); 793 } 794 795 /* 796 * Schedule ourselves for performing the work. 797 */ 798 xpt_schedule(periph, 1); 799 cam_periph_unlock(periph); 800 801 return; 802 } 803 804 805 #define PENDING_MOUNT_CHECK(softc, periph, dev) \ 806 if (softc->open_pending_mount) { \ 807 error = samount(periph, 0, dev); \ 808 if (error) { \ 809 break; \ 810 } \ 811 saprevent(periph, PR_PREVENT); \ 812 softc->open_pending_mount = 0; \ 813 } 814 815 static int 816 saioctl(struct cdev *dev, u_long cmd, caddr_t arg, int flag, struct thread *td) 817 { 818 struct cam_periph *periph; 819 struct sa_softc *softc; 820 scsi_space_code spaceop; 821 int didlockperiph = 0; 822 int mode; 823 int error = 0; 824 825 mode = SAMODE(dev); 826 error = 0; /* shut up gcc */ 827 spaceop = 0; /* shut up gcc */ 828 829 periph = (struct cam_periph *)dev->si_drv1; 830 if (periph == NULL) 831 return (ENXIO); 832 833 cam_periph_lock(periph); 834 softc = (struct sa_softc *)periph->softc; 835 836 /* 837 * Check for control mode accesses. We allow MTIOCGET and 838 * MTIOCERRSTAT (but need to be the only one open in order 839 * to clear latched status), and MTSETBSIZE, MTSETDNSTY 840 * and MTCOMP (but need to be the only one accessing this 841 * device to run those). 842 */ 843 844 if (SA_IS_CTRL(dev)) { 845 switch (cmd) { 846 case MTIOCGETEOTMODEL: 847 case MTIOCGET: 848 break; 849 case MTIOCERRSTAT: 850 /* 851 * If the periph isn't already locked, lock it 852 * so our MTIOCERRSTAT can reset latched error stats. 853 * 854 * If the periph is already locked, skip it because 855 * we're just getting status and it'll be up to the 856 * other thread that has this device open to do 857 * an MTIOCERRSTAT that would clear latched status. 858 */ 859 if ((periph->flags & CAM_PERIPH_LOCKED) == 0) { 860 error = cam_periph_hold(periph, PRIBIO|PCATCH); 861 if (error != 0) 862 return (error); 863 didlockperiph = 1; 864 } 865 break; 866 867 case MTIOCTOP: 868 { 869 struct mtop *mt = (struct mtop *) arg; 870 871 /* 872 * Check to make sure it's an OP we can perform 873 * with no media inserted. 874 */ 875 switch (mt->mt_op) { 876 case MTSETBSIZ: 877 case MTSETDNSTY: 878 case MTCOMP: 879 mt = NULL; 880 /* FALLTHROUGH */ 881 default: 882 break; 883 } 884 if (mt != NULL) { 885 break; 886 } 887 /* FALLTHROUGH */ 888 } 889 case MTIOCSETEOTMODEL: 890 /* 891 * We need to acquire the peripheral here rather 892 * than at open time because we are sharing writable 893 * access to data structures. 894 */ 895 error = cam_periph_hold(periph, PRIBIO|PCATCH); 896 if (error != 0) 897 return (error); 898 didlockperiph = 1; 899 break; 900 901 default: 902 return (EINVAL); 903 } 904 } 905 906 /* 907 * Find the device that the user is talking about 908 */ 909 switch (cmd) { 910 case MTIOCGET: 911 { 912 struct mtget *g = (struct mtget *)arg; 913 914 /* 915 * If this isn't the control mode device, actually go out 916 * and ask the drive again what it's set to. 917 */ 918 if (!SA_IS_CTRL(dev) && !softc->open_pending_mount) { 919 u_int8_t write_protect; 920 int comp_enabled, comp_supported; 921 error = sagetparams(periph, SA_PARAM_ALL, 922 &softc->media_blksize, &softc->media_density, 923 &softc->media_numblks, &softc->buffer_mode, 924 &write_protect, &softc->speed, &comp_supported, 925 &comp_enabled, &softc->comp_algorithm, NULL); 926 if (error) 927 break; 928 if (write_protect) 929 softc->flags |= SA_FLAG_TAPE_WP; 930 else 931 softc->flags &= ~SA_FLAG_TAPE_WP; 932 softc->flags &= ~(SA_FLAG_COMP_SUPP| 933 SA_FLAG_COMP_ENABLED|SA_FLAG_COMP_UNSUPP); 934 if (comp_supported) { 935 if (softc->saved_comp_algorithm == 0) 936 softc->saved_comp_algorithm = 937 softc->comp_algorithm; 938 softc->flags |= SA_FLAG_COMP_SUPP; 939 if (comp_enabled) 940 softc->flags |= SA_FLAG_COMP_ENABLED; 941 } else 942 softc->flags |= SA_FLAG_COMP_UNSUPP; 943 } 944 bzero(g, sizeof(struct mtget)); 945 g->mt_type = MT_ISAR; 946 if (softc->flags & SA_FLAG_COMP_UNSUPP) { 947 g->mt_comp = MT_COMP_UNSUPP; 948 g->mt_comp0 = MT_COMP_UNSUPP; 949 g->mt_comp1 = MT_COMP_UNSUPP; 950 g->mt_comp2 = MT_COMP_UNSUPP; 951 g->mt_comp3 = MT_COMP_UNSUPP; 952 } else { 953 if ((softc->flags & SA_FLAG_COMP_ENABLED) == 0) { 954 g->mt_comp = MT_COMP_DISABLED; 955 } else { 956 g->mt_comp = softc->comp_algorithm; 957 } 958 g->mt_comp0 = softc->comp_algorithm; 959 g->mt_comp1 = softc->comp_algorithm; 960 g->mt_comp2 = softc->comp_algorithm; 961 g->mt_comp3 = softc->comp_algorithm; 962 } 963 g->mt_density = softc->media_density; 964 g->mt_density0 = softc->media_density; 965 g->mt_density1 = softc->media_density; 966 g->mt_density2 = softc->media_density; 967 g->mt_density3 = softc->media_density; 968 g->mt_blksiz = softc->media_blksize; 969 g->mt_blksiz0 = softc->media_blksize; 970 g->mt_blksiz1 = softc->media_blksize; 971 g->mt_blksiz2 = softc->media_blksize; 972 g->mt_blksiz3 = softc->media_blksize; 973 g->mt_fileno = softc->fileno; 974 g->mt_blkno = softc->blkno; 975 g->mt_dsreg = (short) softc->dsreg; 976 /* 977 * Yes, we know that this is likely to overflow 978 */ 979 if (softc->last_resid_was_io) { 980 if ((g->mt_resid = (short) softc->last_io_resid) != 0) { 981 if (SA_IS_CTRL(dev) == 0 || didlockperiph) { 982 softc->last_io_resid = 0; 983 } 984 } 985 } else { 986 if ((g->mt_resid = (short)softc->last_ctl_resid) != 0) { 987 if (SA_IS_CTRL(dev) == 0 || didlockperiph) { 988 softc->last_ctl_resid = 0; 989 } 990 } 991 } 992 error = 0; 993 break; 994 } 995 case MTIOCERRSTAT: 996 { 997 struct scsi_tape_errors *sep = 998 &((union mterrstat *)arg)->scsi_errstat; 999 1000 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, 1001 ("saioctl: MTIOCERRSTAT\n")); 1002 1003 bzero(sep, sizeof(*sep)); 1004 sep->io_resid = softc->last_io_resid; 1005 bcopy((caddr_t) &softc->last_io_sense, sep->io_sense, 1006 sizeof (sep->io_sense)); 1007 bcopy((caddr_t) &softc->last_io_cdb, sep->io_cdb, 1008 sizeof (sep->io_cdb)); 1009 sep->ctl_resid = softc->last_ctl_resid; 1010 bcopy((caddr_t) &softc->last_ctl_sense, sep->ctl_sense, 1011 sizeof (sep->ctl_sense)); 1012 bcopy((caddr_t) &softc->last_ctl_cdb, sep->ctl_cdb, 1013 sizeof (sep->ctl_cdb)); 1014 1015 if ((SA_IS_CTRL(dev) == 0 && softc->open_pending_mount) || 1016 didlockperiph) 1017 bzero((caddr_t) &softc->errinfo, 1018 sizeof (softc->errinfo)); 1019 error = 0; 1020 break; 1021 } 1022 case MTIOCTOP: 1023 { 1024 struct mtop *mt; 1025 int count; 1026 1027 PENDING_MOUNT_CHECK(softc, periph, dev); 1028 1029 mt = (struct mtop *)arg; 1030 1031 1032 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, 1033 ("saioctl: op=0x%x count=0x%x\n", 1034 mt->mt_op, mt->mt_count)); 1035 1036 count = mt->mt_count; 1037 switch (mt->mt_op) { 1038 case MTWEOF: /* write an end-of-file marker */ 1039 /* 1040 * We don't need to clear the SA_FLAG_TAPE_WRITTEN 1041 * flag because by keeping track of filemarks 1042 * we have last written we know ehether or not 1043 * we need to write more when we close the device. 1044 */ 1045 error = sawritefilemarks(periph, count, FALSE); 1046 break; 1047 case MTWSS: /* write a setmark */ 1048 error = sawritefilemarks(periph, count, TRUE); 1049 break; 1050 case MTBSR: /* backward space record */ 1051 case MTFSR: /* forward space record */ 1052 case MTBSF: /* backward space file */ 1053 case MTFSF: /* forward space file */ 1054 case MTBSS: /* backward space setmark */ 1055 case MTFSS: /* forward space setmark */ 1056 case MTEOD: /* space to end of recorded medium */ 1057 { 1058 int nmarks; 1059 1060 spaceop = SS_FILEMARKS; 1061 nmarks = softc->filemarks; 1062 error = sacheckeod(periph); 1063 if (error) { 1064 xpt_print(periph->path, 1065 "EOD check prior to spacing failed\n"); 1066 softc->flags |= SA_FLAG_EIO_PENDING; 1067 break; 1068 } 1069 nmarks -= softc->filemarks; 1070 switch(mt->mt_op) { 1071 case MTBSR: 1072 count = -count; 1073 /* FALLTHROUGH */ 1074 case MTFSR: 1075 spaceop = SS_BLOCKS; 1076 break; 1077 case MTBSF: 1078 count = -count; 1079 /* FALLTHROUGH */ 1080 case MTFSF: 1081 break; 1082 case MTBSS: 1083 count = -count; 1084 /* FALLTHROUGH */ 1085 case MTFSS: 1086 spaceop = SS_SETMARKS; 1087 break; 1088 case MTEOD: 1089 spaceop = SS_EOD; 1090 count = 0; 1091 nmarks = 0; 1092 break; 1093 default: 1094 error = EINVAL; 1095 break; 1096 } 1097 if (error) 1098 break; 1099 1100 nmarks = softc->filemarks; 1101 /* 1102 * XXX: Why are we checking again? 1103 */ 1104 error = sacheckeod(periph); 1105 if (error) 1106 break; 1107 nmarks -= softc->filemarks; 1108 error = saspace(periph, count - nmarks, spaceop); 1109 /* 1110 * At this point, clear that we've written the tape 1111 * and that we've written any filemarks. We really 1112 * don't know what the applications wishes to do next- 1113 * the sacheckeod's will make sure we terminated the 1114 * tape correctly if we'd been writing, but the next 1115 * action the user application takes will set again 1116 * whether we need to write filemarks. 1117 */ 1118 softc->flags &= 1119 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1120 softc->filemarks = 0; 1121 break; 1122 } 1123 case MTREW: /* rewind */ 1124 PENDING_MOUNT_CHECK(softc, periph, dev); 1125 (void) sacheckeod(periph); 1126 error = sarewind(periph); 1127 /* see above */ 1128 softc->flags &= 1129 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1130 softc->flags &= ~SA_FLAG_ERR_PENDING; 1131 softc->filemarks = 0; 1132 break; 1133 case MTERASE: /* erase */ 1134 PENDING_MOUNT_CHECK(softc, periph, dev); 1135 error = saerase(periph, count); 1136 softc->flags &= 1137 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1138 softc->flags &= ~SA_FLAG_ERR_PENDING; 1139 break; 1140 case MTRETENS: /* re-tension tape */ 1141 PENDING_MOUNT_CHECK(softc, periph, dev); 1142 error = saretension(periph); 1143 softc->flags &= 1144 ~(SA_FLAG_TAPE_WRITTEN|SA_FLAG_TAPE_FROZEN); 1145 softc->flags &= ~SA_FLAG_ERR_PENDING; 1146 break; 1147 case MTOFFL: /* rewind and put the drive offline */ 1148 1149 PENDING_MOUNT_CHECK(softc, periph, dev); 1150 1151 (void) sacheckeod(periph); 1152 /* see above */ 1153 softc->flags &= ~SA_FLAG_TAPE_WRITTEN; 1154 softc->filemarks = 0; 1155 1156 error = sarewind(periph); 1157 /* clear the frozen flag anyway */ 1158 softc->flags &= ~SA_FLAG_TAPE_FROZEN; 1159 1160 /* 1161 * Be sure to allow media removal before ejecting. 1162 */ 1163 1164 saprevent(periph, PR_ALLOW); 1165 if (error == 0) { 1166 error = saloadunload(periph, FALSE); 1167 if (error == 0) { 1168 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 1169 } 1170 } 1171 break; 1172 1173 case MTNOP: /* no operation, sets status only */ 1174 case MTCACHE: /* enable controller cache */ 1175 case MTNOCACHE: /* disable controller cache */ 1176 error = 0; 1177 break; 1178 1179 case MTSETBSIZ: /* Set block size for device */ 1180 1181 PENDING_MOUNT_CHECK(softc, periph, dev); 1182 1183 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, count, 1184 0, 0, 0); 1185 if (error == 0) { 1186 softc->last_media_blksize = 1187 softc->media_blksize; 1188 softc->media_blksize = count; 1189 if (count) { 1190 softc->flags |= SA_FLAG_FIXED; 1191 if (powerof2(count)) { 1192 softc->blk_shift = 1193 ffs(count) - 1; 1194 softc->blk_mask = count - 1; 1195 } else { 1196 softc->blk_mask = ~0; 1197 softc->blk_shift = 0; 1198 } 1199 /* 1200 * Make the user's desire 'persistent'. 1201 */ 1202 softc->quirks &= ~SA_QUIRK_VARIABLE; 1203 softc->quirks |= SA_QUIRK_FIXED; 1204 } else { 1205 softc->flags &= ~SA_FLAG_FIXED; 1206 if (softc->max_blk == 0) { 1207 softc->max_blk = ~0; 1208 } 1209 softc->blk_shift = 0; 1210 if (softc->blk_gran != 0) { 1211 softc->blk_mask = 1212 softc->blk_gran - 1; 1213 } else { 1214 softc->blk_mask = 0; 1215 } 1216 /* 1217 * Make the user's desire 'persistent'. 1218 */ 1219 softc->quirks |= SA_QUIRK_VARIABLE; 1220 softc->quirks &= ~SA_QUIRK_FIXED; 1221 } 1222 } 1223 break; 1224 case MTSETDNSTY: /* Set density for device and mode */ 1225 PENDING_MOUNT_CHECK(softc, periph, dev); 1226 1227 if (count > UCHAR_MAX) { 1228 error = EINVAL; 1229 break; 1230 } else { 1231 error = sasetparams(periph, SA_PARAM_DENSITY, 1232 0, count, 0, 0); 1233 } 1234 break; 1235 case MTCOMP: /* enable compression */ 1236 PENDING_MOUNT_CHECK(softc, periph, dev); 1237 /* 1238 * Some devices don't support compression, and 1239 * don't like it if you ask them for the 1240 * compression page. 1241 */ 1242 if ((softc->quirks & SA_QUIRK_NOCOMP) || 1243 (softc->flags & SA_FLAG_COMP_UNSUPP)) { 1244 error = ENODEV; 1245 break; 1246 } 1247 error = sasetparams(periph, SA_PARAM_COMPRESSION, 1248 0, 0, count, SF_NO_PRINT); 1249 break; 1250 default: 1251 error = EINVAL; 1252 } 1253 break; 1254 } 1255 case MTIOCIEOT: 1256 case MTIOCEEOT: 1257 error = 0; 1258 break; 1259 case MTIOCRDSPOS: 1260 PENDING_MOUNT_CHECK(softc, periph, dev); 1261 error = sardpos(periph, 0, (u_int32_t *) arg); 1262 break; 1263 case MTIOCRDHPOS: 1264 PENDING_MOUNT_CHECK(softc, periph, dev); 1265 error = sardpos(periph, 1, (u_int32_t *) arg); 1266 break; 1267 case MTIOCSLOCATE: 1268 PENDING_MOUNT_CHECK(softc, periph, dev); 1269 error = sasetpos(periph, 0, (u_int32_t *) arg); 1270 break; 1271 case MTIOCHLOCATE: 1272 PENDING_MOUNT_CHECK(softc, periph, dev); 1273 error = sasetpos(periph, 1, (u_int32_t *) arg); 1274 break; 1275 case MTIOCGETEOTMODEL: 1276 error = 0; 1277 if (softc->quirks & SA_QUIRK_1FM) 1278 mode = 1; 1279 else 1280 mode = 2; 1281 *((u_int32_t *) arg) = mode; 1282 break; 1283 case MTIOCSETEOTMODEL: 1284 error = 0; 1285 switch (*((u_int32_t *) arg)) { 1286 case 1: 1287 softc->quirks &= ~SA_QUIRK_2FM; 1288 softc->quirks |= SA_QUIRK_1FM; 1289 break; 1290 case 2: 1291 softc->quirks &= ~SA_QUIRK_1FM; 1292 softc->quirks |= SA_QUIRK_2FM; 1293 break; 1294 default: 1295 error = EINVAL; 1296 break; 1297 } 1298 break; 1299 default: 1300 error = cam_periph_ioctl(periph, cmd, arg, saerror); 1301 break; 1302 } 1303 1304 /* 1305 * Check to see if we cleared a frozen state 1306 */ 1307 if (error == 0 && (softc->flags & SA_FLAG_TAPE_FROZEN)) { 1308 switch(cmd) { 1309 case MTIOCRDSPOS: 1310 case MTIOCRDHPOS: 1311 case MTIOCSLOCATE: 1312 case MTIOCHLOCATE: 1313 softc->fileno = (daddr_t) -1; 1314 softc->blkno = (daddr_t) -1; 1315 softc->flags &= ~SA_FLAG_TAPE_FROZEN; 1316 xpt_print(periph->path, 1317 "tape state now unfrozen.\n"); 1318 break; 1319 default: 1320 break; 1321 } 1322 } 1323 if (didlockperiph) { 1324 cam_periph_unhold(periph); 1325 } 1326 cam_periph_unlock(periph); 1327 return (error); 1328 } 1329 1330 static void 1331 sainit(void) 1332 { 1333 cam_status status; 1334 1335 /* 1336 * Install a global async callback. 1337 */ 1338 status = xpt_register_async(AC_FOUND_DEVICE, saasync, NULL, NULL); 1339 1340 if (status != CAM_REQ_CMP) { 1341 printf("sa: Failed to attach master async callback " 1342 "due to status 0x%x!\n", status); 1343 } 1344 } 1345 1346 static void 1347 saoninvalidate(struct cam_periph *periph) 1348 { 1349 struct sa_softc *softc; 1350 1351 softc = (struct sa_softc *)periph->softc; 1352 1353 /* 1354 * De-register any async callbacks. 1355 */ 1356 xpt_register_async(0, saasync, periph, periph->path); 1357 1358 softc->flags |= SA_FLAG_INVALID; 1359 1360 /* 1361 * Return all queued I/O with ENXIO. 1362 * XXX Handle any transactions queued to the card 1363 * with XPT_ABORT_CCB. 1364 */ 1365 bioq_flush(&softc->bio_queue, NULL, ENXIO); 1366 softc->queue_count = 0; 1367 1368 xpt_print(periph->path, "lost device\n"); 1369 1370 } 1371 1372 static void 1373 sacleanup(struct cam_periph *periph) 1374 { 1375 struct sa_softc *softc; 1376 int i; 1377 1378 softc = (struct sa_softc *)periph->softc; 1379 1380 devstat_remove_entry(softc->device_stats); 1381 1382 destroy_dev(softc->devs.ctl_dev); 1383 1384 for (i = 0; i < SA_NUM_MODES; i++) { 1385 destroy_dev(softc->devs.mode_devs[i].r_dev); 1386 destroy_dev(softc->devs.mode_devs[i].nr_dev); 1387 destroy_dev(softc->devs.mode_devs[i].er_dev); 1388 } 1389 1390 xpt_print(periph->path, "removing device entry\n"); 1391 free(softc, M_SCSISA); 1392 } 1393 1394 static void 1395 saasync(void *callback_arg, u_int32_t code, 1396 struct cam_path *path, void *arg) 1397 { 1398 struct cam_periph *periph; 1399 1400 periph = (struct cam_periph *)callback_arg; 1401 switch (code) { 1402 case AC_FOUND_DEVICE: 1403 { 1404 struct ccb_getdev *cgd; 1405 cam_status status; 1406 1407 cgd = (struct ccb_getdev *)arg; 1408 if (cgd == NULL) 1409 break; 1410 1411 if (SID_TYPE(&cgd->inq_data) != T_SEQUENTIAL) 1412 break; 1413 1414 /* 1415 * Allocate a peripheral instance for 1416 * this device and start the probe 1417 * process. 1418 */ 1419 status = cam_periph_alloc(saregister, saoninvalidate, 1420 sacleanup, sastart, 1421 "sa", CAM_PERIPH_BIO, cgd->ccb_h.path, 1422 saasync, AC_FOUND_DEVICE, cgd); 1423 1424 if (status != CAM_REQ_CMP 1425 && status != CAM_REQ_INPROG) 1426 printf("saasync: Unable to probe new device " 1427 "due to status 0x%x\n", status); 1428 break; 1429 } 1430 default: 1431 cam_periph_async(periph, code, path, arg); 1432 break; 1433 } 1434 } 1435 1436 static cam_status 1437 saregister(struct cam_periph *periph, void *arg) 1438 { 1439 struct sa_softc *softc; 1440 struct ccb_getdev *cgd; 1441 caddr_t match; 1442 int i; 1443 1444 cgd = (struct ccb_getdev *)arg; 1445 if (periph == NULL) { 1446 printf("saregister: periph was NULL!!\n"); 1447 return (CAM_REQ_CMP_ERR); 1448 } 1449 1450 if (cgd == NULL) { 1451 printf("saregister: no getdev CCB, can't register device\n"); 1452 return (CAM_REQ_CMP_ERR); 1453 } 1454 1455 softc = (struct sa_softc *) 1456 malloc(sizeof (*softc), M_SCSISA, M_NOWAIT | M_ZERO); 1457 if (softc == NULL) { 1458 printf("saregister: Unable to probe new device. " 1459 "Unable to allocate softc\n"); 1460 return (CAM_REQ_CMP_ERR); 1461 } 1462 softc->scsi_rev = SID_ANSI_REV(&cgd->inq_data); 1463 softc->state = SA_STATE_NORMAL; 1464 softc->fileno = (daddr_t) -1; 1465 softc->blkno = (daddr_t) -1; 1466 1467 bioq_init(&softc->bio_queue); 1468 periph->softc = softc; 1469 1470 /* 1471 * See if this device has any quirks. 1472 */ 1473 match = cam_quirkmatch((caddr_t)&cgd->inq_data, 1474 (caddr_t)sa_quirk_table, 1475 sizeof(sa_quirk_table)/sizeof(*sa_quirk_table), 1476 sizeof(*sa_quirk_table), scsi_inquiry_match); 1477 1478 if (match != NULL) { 1479 softc->quirks = ((struct sa_quirk_entry *)match)->quirks; 1480 softc->last_media_blksize = 1481 ((struct sa_quirk_entry *)match)->prefblk; 1482 #ifdef CAMDEBUG 1483 xpt_print(periph->path, "found quirk entry %d\n", 1484 (int) (((struct sa_quirk_entry *) match) - sa_quirk_table)); 1485 #endif 1486 } else 1487 softc->quirks = SA_QUIRK_NONE; 1488 1489 /* 1490 * The SA driver supports a blocksize, but we don't know the 1491 * blocksize until we media is inserted. So, set a flag to 1492 * indicate that the blocksize is unavailable right now. 1493 */ 1494 cam_periph_unlock(periph); 1495 softc->device_stats = devstat_new_entry("sa", periph->unit_number, 0, 1496 DEVSTAT_BS_UNAVAILABLE, SID_TYPE(&cgd->inq_data) | 1497 DEVSTAT_TYPE_IF_SCSI, DEVSTAT_PRIORITY_TAPE); 1498 1499 softc->devs.ctl_dev = make_dev(&sa_cdevsw, SAMINOR(SA_CTLDEV, 1500 periph->unit_number, 0, SA_ATYPE_R), UID_ROOT, GID_OPERATOR, 1501 0660, "%s%d.ctl", periph->periph_name, periph->unit_number); 1502 softc->devs.ctl_dev->si_drv1 = periph; 1503 1504 for (i = 0; i < SA_NUM_MODES; i++) { 1505 1506 softc->devs.mode_devs[i].r_dev = make_dev(&sa_cdevsw, 1507 SAMINOR(SA_NOT_CTLDEV, periph->unit_number, i, SA_ATYPE_R), 1508 UID_ROOT, GID_OPERATOR, 0660, "%s%d.%d", 1509 periph->periph_name, periph->unit_number, i); 1510 softc->devs.mode_devs[i].r_dev->si_drv1 = periph; 1511 1512 softc->devs.mode_devs[i].nr_dev = make_dev(&sa_cdevsw, 1513 SAMINOR(SA_NOT_CTLDEV, periph->unit_number, i, SA_ATYPE_NR), 1514 UID_ROOT, GID_OPERATOR, 0660, "n%s%d.%d", 1515 periph->periph_name, periph->unit_number, i); 1516 softc->devs.mode_devs[i].nr_dev->si_drv1 = periph; 1517 1518 softc->devs.mode_devs[i].er_dev = make_dev(&sa_cdevsw, 1519 SAMINOR(SA_NOT_CTLDEV, periph->unit_number, i, SA_ATYPE_ER), 1520 UID_ROOT, GID_OPERATOR, 0660, "e%s%d.%d", 1521 periph->periph_name, periph->unit_number, i); 1522 softc->devs.mode_devs[i].er_dev->si_drv1 = periph; 1523 1524 /* 1525 * Make the (well known) aliases for the first mode. 1526 */ 1527 if (i == 0) { 1528 struct cdev *alias; 1529 1530 alias = make_dev_alias(softc->devs.mode_devs[i].r_dev, 1531 "%s%d", periph->periph_name, periph->unit_number); 1532 alias->si_drv1 = periph; 1533 alias = make_dev_alias(softc->devs.mode_devs[i].nr_dev, 1534 "n%s%d", periph->periph_name, periph->unit_number); 1535 alias->si_drv1 = periph; 1536 alias = make_dev_alias(softc->devs.mode_devs[i].er_dev, 1537 "e%s%d", periph->periph_name, periph->unit_number); 1538 alias->si_drv1 = periph; 1539 } 1540 } 1541 cam_periph_lock(periph); 1542 1543 /* 1544 * Add an async callback so that we get 1545 * notified if this device goes away. 1546 */ 1547 xpt_register_async(AC_LOST_DEVICE, saasync, periph, periph->path); 1548 1549 xpt_announce_periph(periph, NULL); 1550 1551 return (CAM_REQ_CMP); 1552 } 1553 1554 static void 1555 sastart(struct cam_periph *periph, union ccb *start_ccb) 1556 { 1557 struct sa_softc *softc; 1558 1559 softc = (struct sa_softc *)periph->softc; 1560 1561 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("sastart\n")); 1562 1563 1564 switch (softc->state) { 1565 case SA_STATE_NORMAL: 1566 { 1567 /* Pull a buffer from the queue and get going on it */ 1568 struct bio *bp; 1569 1570 /* 1571 * See if there is a buf with work for us to do.. 1572 */ 1573 bp = bioq_first(&softc->bio_queue); 1574 if (periph->immediate_priority <= periph->pinfo.priority) { 1575 CAM_DEBUG_PRINT(CAM_DEBUG_SUBTRACE, 1576 ("queuing for immediate ccb\n")); 1577 Set_CCB_Type(start_ccb, SA_CCB_WAITING); 1578 SLIST_INSERT_HEAD(&periph->ccb_list, &start_ccb->ccb_h, 1579 periph_links.sle); 1580 periph->immediate_priority = CAM_PRIORITY_NONE; 1581 wakeup(&periph->ccb_list); 1582 } else if (bp == NULL) { 1583 xpt_release_ccb(start_ccb); 1584 } else if ((softc->flags & SA_FLAG_ERR_PENDING) != 0) { 1585 struct bio *done_bp; 1586 again: 1587 softc->queue_count--; 1588 bioq_remove(&softc->bio_queue, bp); 1589 bp->bio_resid = bp->bio_bcount; 1590 done_bp = bp; 1591 if ((softc->flags & SA_FLAG_EOM_PENDING) != 0) { 1592 /* 1593 * We now just clear errors in this case 1594 * and let the residual be the notifier. 1595 */ 1596 bp->bio_error = 0; 1597 } else if ((softc->flags & SA_FLAG_EOF_PENDING) != 0) { 1598 /* 1599 * This can only happen if we're reading 1600 * in fixed length mode. In this case, 1601 * we dump the rest of the list the 1602 * same way. 1603 */ 1604 bp->bio_error = 0; 1605 if (bioq_first(&softc->bio_queue) != NULL) { 1606 biodone(done_bp); 1607 goto again; 1608 } 1609 } else if ((softc->flags & SA_FLAG_EIO_PENDING) != 0) { 1610 bp->bio_error = EIO; 1611 bp->bio_flags |= BIO_ERROR; 1612 } 1613 bp = bioq_first(&softc->bio_queue); 1614 /* 1615 * Only if we have no other buffers queued up 1616 * do we clear the pending error flag. 1617 */ 1618 if (bp == NULL) 1619 softc->flags &= ~SA_FLAG_ERR_PENDING; 1620 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 1621 ("sastart- ERR_PENDING now 0x%x, bp is %sNULL, " 1622 "%d more buffers queued up\n", 1623 (softc->flags & SA_FLAG_ERR_PENDING), 1624 (bp != NULL)? "not " : " ", softc->queue_count)); 1625 xpt_release_ccb(start_ccb); 1626 biodone(done_bp); 1627 } else { 1628 u_int32_t length; 1629 1630 bioq_remove(&softc->bio_queue, bp); 1631 softc->queue_count--; 1632 1633 if ((softc->flags & SA_FLAG_FIXED) != 0) { 1634 if (softc->blk_shift != 0) { 1635 length = 1636 bp->bio_bcount >> softc->blk_shift; 1637 } else if (softc->media_blksize != 0) { 1638 length = bp->bio_bcount / 1639 softc->media_blksize; 1640 } else { 1641 bp->bio_error = EIO; 1642 xpt_print(periph->path, "zero blocksize" 1643 " for FIXED length writes?\n"); 1644 biodone(bp); 1645 break; 1646 } 1647 #if 0 1648 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_INFO, 1649 ("issuing a %d fixed record %s\n", 1650 length, (bp->bio_cmd == BIO_READ)? "read" : 1651 "write")); 1652 #endif 1653 } else { 1654 length = bp->bio_bcount; 1655 #if 0 1656 CAM_DEBUG(start_ccb->ccb_h.path, CAM_DEBUG_INFO, 1657 ("issuing a %d variable byte %s\n", 1658 length, (bp->bio_cmd == BIO_READ)? "read" : 1659 "write")); 1660 #endif 1661 } 1662 devstat_start_transaction_bio(softc->device_stats, bp); 1663 /* 1664 * Some people have theorized that we should 1665 * suppress illegal length indication if we are 1666 * running in variable block mode so that we don't 1667 * have to request sense every time our requested 1668 * block size is larger than the written block. 1669 * The residual information from the ccb allows 1670 * us to identify this situation anyway. The only 1671 * problem with this is that we will not get 1672 * information about blocks that are larger than 1673 * our read buffer unless we set the block size 1674 * in the mode page to something other than 0. 1675 * 1676 * I believe that this is a non-issue. If user apps 1677 * don't adjust their read size to match our record 1678 * size, that's just life. Anyway, the typical usage 1679 * would be to issue, e.g., 64KB reads and occasionally 1680 * have to do deal with 512 byte or 1KB intermediate 1681 * records. 1682 */ 1683 softc->dsreg = (bp->bio_cmd == BIO_READ)? 1684 MTIO_DSREG_RD : MTIO_DSREG_WR; 1685 scsi_sa_read_write(&start_ccb->csio, 0, sadone, 1686 MSG_SIMPLE_Q_TAG, (bp->bio_cmd == BIO_READ), 1687 FALSE, (softc->flags & SA_FLAG_FIXED) != 0, 1688 length, bp->bio_data, bp->bio_bcount, SSD_FULL_SIZE, 1689 IO_TIMEOUT); 1690 start_ccb->ccb_h.ccb_pflags &= ~SA_POSITION_UPDATED; 1691 Set_CCB_Type(start_ccb, SA_CCB_BUFFER_IO); 1692 start_ccb->ccb_h.ccb_bp = bp; 1693 bp = bioq_first(&softc->bio_queue); 1694 xpt_action(start_ccb); 1695 } 1696 1697 if (bp != NULL) { 1698 /* Have more work to do, so ensure we stay scheduled */ 1699 xpt_schedule(periph, 1); 1700 } 1701 break; 1702 } 1703 case SA_STATE_ABNORMAL: 1704 default: 1705 panic("state 0x%x in sastart", softc->state); 1706 break; 1707 } 1708 } 1709 1710 1711 static void 1712 sadone(struct cam_periph *periph, union ccb *done_ccb) 1713 { 1714 struct sa_softc *softc; 1715 struct ccb_scsiio *csio; 1716 1717 softc = (struct sa_softc *)periph->softc; 1718 csio = &done_ccb->csio; 1719 switch (CCB_Type(csio)) { 1720 case SA_CCB_BUFFER_IO: 1721 { 1722 struct bio *bp; 1723 int error; 1724 1725 softc->dsreg = MTIO_DSREG_REST; 1726 bp = (struct bio *)done_ccb->ccb_h.ccb_bp; 1727 error = 0; 1728 if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) { 1729 if ((error = saerror(done_ccb, 0, 0)) == ERESTART) { 1730 /* 1731 * A retry was scheduled, so just return. 1732 */ 1733 return; 1734 } 1735 } 1736 1737 if (error == EIO) { 1738 1739 /* 1740 * Catastrophic error. Mark the tape as frozen 1741 * (we no longer know tape position). 1742 * 1743 * Return all queued I/O with EIO, and unfreeze 1744 * our queue so that future transactions that 1745 * attempt to fix this problem can get to the 1746 * device. 1747 * 1748 */ 1749 1750 softc->flags |= SA_FLAG_TAPE_FROZEN; 1751 bioq_flush(&softc->bio_queue, NULL, EIO); 1752 } 1753 if (error != 0) { 1754 bp->bio_resid = bp->bio_bcount; 1755 bp->bio_error = error; 1756 bp->bio_flags |= BIO_ERROR; 1757 /* 1758 * In the error case, position is updated in saerror. 1759 */ 1760 } else { 1761 bp->bio_resid = csio->resid; 1762 bp->bio_error = 0; 1763 if (csio->resid != 0) { 1764 bp->bio_flags |= BIO_ERROR; 1765 } 1766 if (bp->bio_cmd == BIO_WRITE) { 1767 softc->flags |= SA_FLAG_TAPE_WRITTEN; 1768 softc->filemarks = 0; 1769 } 1770 if (!(csio->ccb_h.ccb_pflags & SA_POSITION_UPDATED) && 1771 (softc->blkno != (daddr_t) -1)) { 1772 if ((softc->flags & SA_FLAG_FIXED) != 0) { 1773 u_int32_t l; 1774 if (softc->blk_shift != 0) { 1775 l = bp->bio_bcount >> 1776 softc->blk_shift; 1777 } else { 1778 l = bp->bio_bcount / 1779 softc->media_blksize; 1780 } 1781 softc->blkno += (daddr_t) l; 1782 } else { 1783 softc->blkno++; 1784 } 1785 } 1786 } 1787 /* 1788 * If we had an error (immediate or pending), 1789 * release the device queue now. 1790 */ 1791 if (error || (softc->flags & SA_FLAG_ERR_PENDING)) 1792 cam_release_devq(done_ccb->ccb_h.path, 0, 0, 0, 0); 1793 #ifdef CAMDEBUG 1794 if (error || bp->bio_resid) { 1795 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 1796 ("error %d resid %ld count %ld\n", error, 1797 bp->bio_resid, bp->bio_bcount)); 1798 } 1799 #endif 1800 biofinish(bp, softc->device_stats, 0); 1801 break; 1802 } 1803 case SA_CCB_WAITING: 1804 { 1805 /* Caller will release the CCB */ 1806 wakeup(&done_ccb->ccb_h.cbfcnp); 1807 return; 1808 } 1809 } 1810 xpt_release_ccb(done_ccb); 1811 } 1812 1813 /* 1814 * Mount the tape (make sure it's ready for I/O). 1815 */ 1816 static int 1817 samount(struct cam_periph *periph, int oflags, struct cdev *dev) 1818 { 1819 struct sa_softc *softc; 1820 union ccb *ccb; 1821 int error; 1822 1823 /* 1824 * oflags can be checked for 'kind' of open (read-only check) - later 1825 * dev can be checked for a control-mode or compression open - later 1826 */ 1827 UNUSED_PARAMETER(oflags); 1828 UNUSED_PARAMETER(dev); 1829 1830 1831 softc = (struct sa_softc *)periph->softc; 1832 1833 /* 1834 * This should determine if something has happend since the last 1835 * open/mount that would invalidate the mount. We do *not* want 1836 * to retry this command- we just want the status. But we only 1837 * do this if we're mounted already- if we're not mounted, 1838 * we don't care about the unit read state and can instead use 1839 * this opportunity to attempt to reserve the tape unit. 1840 */ 1841 1842 if (softc->flags & SA_FLAG_TAPE_MOUNTED) { 1843 ccb = cam_periph_getccb(periph, 1); 1844 scsi_test_unit_ready(&ccb->csio, 0, sadone, 1845 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT); 1846 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1847 softc->device_stats); 1848 QFRLS(ccb); 1849 if (error == ENXIO) { 1850 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 1851 scsi_test_unit_ready(&ccb->csio, 0, sadone, 1852 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT); 1853 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1854 softc->device_stats); 1855 QFRLS(ccb); 1856 } else if (error) { 1857 /* 1858 * We don't need to freeze the tape because we 1859 * will now attempt to rewind/load it. 1860 */ 1861 softc->flags &= ~SA_FLAG_TAPE_MOUNTED; 1862 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 1863 xpt_print(periph->path, 1864 "error %d on TUR in samount\n", error); 1865 } 1866 } 1867 } else { 1868 error = sareservereleaseunit(periph, TRUE); 1869 if (error) { 1870 return (error); 1871 } 1872 ccb = cam_periph_getccb(periph, 1); 1873 scsi_test_unit_ready(&ccb->csio, 0, sadone, 1874 MSG_SIMPLE_Q_TAG, SSD_FULL_SIZE, IO_TIMEOUT); 1875 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1876 softc->device_stats); 1877 QFRLS(ccb); 1878 } 1879 1880 if ((softc->flags & SA_FLAG_TAPE_MOUNTED) == 0) { 1881 struct scsi_read_block_limits_data *rblim = NULL; 1882 int comp_enabled, comp_supported; 1883 u_int8_t write_protect, guessing = 0; 1884 1885 /* 1886 * Clear out old state. 1887 */ 1888 softc->flags &= ~(SA_FLAG_TAPE_WP|SA_FLAG_TAPE_WRITTEN| 1889 SA_FLAG_ERR_PENDING|SA_FLAG_COMP_ENABLED| 1890 SA_FLAG_COMP_SUPP|SA_FLAG_COMP_UNSUPP); 1891 softc->filemarks = 0; 1892 1893 /* 1894 * *Very* first off, make sure we're loaded to BOT. 1895 */ 1896 scsi_load_unload(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 1897 FALSE, FALSE, 1, SSD_FULL_SIZE, REWIND_TIMEOUT); 1898 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1899 softc->device_stats); 1900 QFRLS(ccb); 1901 1902 /* 1903 * In case this doesn't work, do a REWIND instead 1904 */ 1905 if (error) { 1906 scsi_rewind(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, 1907 FALSE, SSD_FULL_SIZE, REWIND_TIMEOUT); 1908 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1909 softc->device_stats); 1910 QFRLS(ccb); 1911 } 1912 if (error) { 1913 xpt_release_ccb(ccb); 1914 goto exit; 1915 } 1916 1917 /* 1918 * Do a dummy test read to force access to the 1919 * media so that the drive will really know what's 1920 * there. We actually don't really care what the 1921 * blocksize on tape is and don't expect to really 1922 * read a full record. 1923 */ 1924 rblim = (struct scsi_read_block_limits_data *) 1925 malloc(8192, M_SCSISA, M_NOWAIT); 1926 if (rblim == NULL) { 1927 xpt_print(periph->path, "no memory for test read\n"); 1928 xpt_release_ccb(ccb); 1929 error = ENOMEM; 1930 goto exit; 1931 } 1932 1933 if ((softc->quirks & SA_QUIRK_NODREAD) == 0) { 1934 scsi_sa_read_write(&ccb->csio, 0, sadone, 1935 MSG_SIMPLE_Q_TAG, 1, FALSE, 0, 8192, 1936 (void *) rblim, 8192, SSD_FULL_SIZE, 1937 IO_TIMEOUT); 1938 (void) cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 1939 softc->device_stats); 1940 QFRLS(ccb); 1941 scsi_rewind(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, 1942 FALSE, SSD_FULL_SIZE, REWIND_TIMEOUT); 1943 error = cam_periph_runccb(ccb, saerror, CAM_RETRY_SELTO, 1944 SF_NO_PRINT | SF_RETRY_UA, 1945 softc->device_stats); 1946 QFRLS(ccb); 1947 if (error) { 1948 xpt_print(periph->path, 1949 "unable to rewind after test read\n"); 1950 xpt_release_ccb(ccb); 1951 goto exit; 1952 } 1953 } 1954 1955 /* 1956 * Next off, determine block limits. 1957 */ 1958 scsi_read_block_limits(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, 1959 rblim, SSD_FULL_SIZE, SCSIOP_TIMEOUT); 1960 1961 error = cam_periph_runccb(ccb, saerror, CAM_RETRY_SELTO, 1962 SF_NO_PRINT | SF_RETRY_UA, softc->device_stats); 1963 1964 QFRLS(ccb); 1965 xpt_release_ccb(ccb); 1966 1967 if (error != 0) { 1968 /* 1969 * If it's less than SCSI-2, READ BLOCK LIMITS is not 1970 * a MANDATORY command. Anyway- it doesn't matter- 1971 * we can proceed anyway. 1972 */ 1973 softc->blk_gran = 0; 1974 softc->max_blk = ~0; 1975 softc->min_blk = 0; 1976 } else { 1977 if (softc->scsi_rev >= SCSI_REV_SPC) { 1978 softc->blk_gran = RBL_GRAN(rblim); 1979 } else { 1980 softc->blk_gran = 0; 1981 } 1982 /* 1983 * We take max_blk == min_blk to mean a default to 1984 * fixed mode- but note that whatever we get out of 1985 * sagetparams below will actually determine whether 1986 * we are actually *in* fixed mode. 1987 */ 1988 softc->max_blk = scsi_3btoul(rblim->maximum); 1989 softc->min_blk = scsi_2btoul(rblim->minimum); 1990 1991 1992 } 1993 /* 1994 * Next, perform a mode sense to determine 1995 * current density, blocksize, compression etc. 1996 */ 1997 error = sagetparams(periph, SA_PARAM_ALL, 1998 &softc->media_blksize, 1999 &softc->media_density, 2000 &softc->media_numblks, 2001 &softc->buffer_mode, &write_protect, 2002 &softc->speed, &comp_supported, 2003 &comp_enabled, &softc->comp_algorithm, 2004 NULL); 2005 2006 if (error != 0) { 2007 /* 2008 * We could work a little harder here. We could 2009 * adjust our attempts to get information. It 2010 * might be an ancient tape drive. If someone 2011 * nudges us, we'll do that. 2012 */ 2013 goto exit; 2014 } 2015 2016 /* 2017 * If no quirk has determined that this is a device that is 2018 * preferred to be in fixed or variable mode, now is the time 2019 * to find out. 2020 */ 2021 if ((softc->quirks & (SA_QUIRK_FIXED|SA_QUIRK_VARIABLE)) == 0) { 2022 guessing = 1; 2023 /* 2024 * This could be expensive to find out. Luckily we 2025 * only need to do this once. If we start out in 2026 * 'default' mode, try and set ourselves to one 2027 * of the densities that would determine a wad 2028 * of other stuff. Go from highest to lowest. 2029 */ 2030 if (softc->media_density == SCSI_DEFAULT_DENSITY) { 2031 int i; 2032 static u_int8_t ctry[] = { 2033 SCSI_DENSITY_HALFINCH_PE, 2034 SCSI_DENSITY_HALFINCH_6250C, 2035 SCSI_DENSITY_HALFINCH_6250, 2036 SCSI_DENSITY_HALFINCH_1600, 2037 SCSI_DENSITY_HALFINCH_800, 2038 SCSI_DENSITY_QIC_4GB, 2039 SCSI_DENSITY_QIC_2GB, 2040 SCSI_DENSITY_QIC_525_320, 2041 SCSI_DENSITY_QIC_150, 2042 SCSI_DENSITY_QIC_120, 2043 SCSI_DENSITY_QIC_24, 2044 SCSI_DENSITY_QIC_11_9TRK, 2045 SCSI_DENSITY_QIC_11_4TRK, 2046 SCSI_DENSITY_QIC_1320, 2047 SCSI_DENSITY_QIC_3080, 2048 0 2049 }; 2050 for (i = 0; ctry[i]; i++) { 2051 error = sasetparams(periph, 2052 SA_PARAM_DENSITY, 0, ctry[i], 2053 0, SF_NO_PRINT); 2054 if (error == 0) { 2055 softc->media_density = ctry[i]; 2056 break; 2057 } 2058 } 2059 } 2060 switch (softc->media_density) { 2061 case SCSI_DENSITY_QIC_11_4TRK: 2062 case SCSI_DENSITY_QIC_11_9TRK: 2063 case SCSI_DENSITY_QIC_24: 2064 case SCSI_DENSITY_QIC_120: 2065 case SCSI_DENSITY_QIC_150: 2066 case SCSI_DENSITY_QIC_525_320: 2067 case SCSI_DENSITY_QIC_1320: 2068 case SCSI_DENSITY_QIC_3080: 2069 softc->quirks &= ~SA_QUIRK_2FM; 2070 softc->quirks |= SA_QUIRK_FIXED|SA_QUIRK_1FM; 2071 softc->last_media_blksize = 512; 2072 break; 2073 case SCSI_DENSITY_QIC_4GB: 2074 case SCSI_DENSITY_QIC_2GB: 2075 softc->quirks &= ~SA_QUIRK_2FM; 2076 softc->quirks |= SA_QUIRK_FIXED|SA_QUIRK_1FM; 2077 softc->last_media_blksize = 1024; 2078 break; 2079 default: 2080 softc->last_media_blksize = 2081 softc->media_blksize; 2082 softc->quirks |= SA_QUIRK_VARIABLE; 2083 break; 2084 } 2085 } 2086 2087 /* 2088 * If no quirk has determined that this is a device that needs 2089 * to have 2 Filemarks at EOD, now is the time to find out. 2090 */ 2091 2092 if ((softc->quirks & SA_QUIRK_2FM) == 0) { 2093 switch (softc->media_density) { 2094 case SCSI_DENSITY_HALFINCH_800: 2095 case SCSI_DENSITY_HALFINCH_1600: 2096 case SCSI_DENSITY_HALFINCH_6250: 2097 case SCSI_DENSITY_HALFINCH_6250C: 2098 case SCSI_DENSITY_HALFINCH_PE: 2099 softc->quirks &= ~SA_QUIRK_1FM; 2100 softc->quirks |= SA_QUIRK_2FM; 2101 break; 2102 default: 2103 break; 2104 } 2105 } 2106 2107 /* 2108 * Now validate that some info we got makes sense. 2109 */ 2110 if ((softc->max_blk < softc->media_blksize) || 2111 (softc->min_blk > softc->media_blksize && 2112 softc->media_blksize)) { 2113 xpt_print(periph->path, 2114 "BLOCK LIMITS (%d..%d) could not match current " 2115 "block settings (%d)- adjusting\n", softc->min_blk, 2116 softc->max_blk, softc->media_blksize); 2117 softc->max_blk = softc->min_blk = 2118 softc->media_blksize; 2119 } 2120 2121 /* 2122 * Now put ourselves into the right frame of mind based 2123 * upon quirks... 2124 */ 2125 tryagain: 2126 /* 2127 * If we want to be in FIXED mode and our current blocksize 2128 * is not equal to our last blocksize (if nonzero), try and 2129 * set ourselves to this last blocksize (as the 'preferred' 2130 * block size). The initial quirkmatch at registry sets the 2131 * initial 'last' blocksize. If, for whatever reason, this 2132 * 'last' blocksize is zero, set the blocksize to 512, 2133 * or min_blk if that's larger. 2134 */ 2135 if ((softc->quirks & SA_QUIRK_FIXED) && 2136 (softc->quirks & SA_QUIRK_NO_MODESEL) == 0 && 2137 (softc->media_blksize != softc->last_media_blksize)) { 2138 softc->media_blksize = softc->last_media_blksize; 2139 if (softc->media_blksize == 0) { 2140 softc->media_blksize = 512; 2141 if (softc->media_blksize < softc->min_blk) { 2142 softc->media_blksize = softc->min_blk; 2143 } 2144 } 2145 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, 2146 softc->media_blksize, 0, 0, SF_NO_PRINT); 2147 if (error) { 2148 xpt_print(periph->path, 2149 "unable to set fixed blocksize to %d\n", 2150 softc->media_blksize); 2151 goto exit; 2152 } 2153 } 2154 2155 if ((softc->quirks & SA_QUIRK_VARIABLE) && 2156 (softc->media_blksize != 0)) { 2157 softc->last_media_blksize = softc->media_blksize; 2158 softc->media_blksize = 0; 2159 error = sasetparams(periph, SA_PARAM_BLOCKSIZE, 2160 0, 0, 0, SF_NO_PRINT); 2161 if (error) { 2162 /* 2163 * If this fails and we were guessing, just 2164 * assume that we got it wrong and go try 2165 * fixed block mode. Don't even check against 2166 * density code at this point. 2167 */ 2168 if (guessing) { 2169 softc->quirks &= ~SA_QUIRK_VARIABLE; 2170 softc->quirks |= SA_QUIRK_FIXED; 2171 if (softc->last_media_blksize == 0) 2172 softc->last_media_blksize = 512; 2173 goto tryagain; 2174 } 2175 xpt_print(periph->path, 2176 "unable to set variable blocksize\n"); 2177 goto exit; 2178 } 2179 } 2180 2181 /* 2182 * Now that we have the current block size, 2183 * set up some parameters for sastart's usage. 2184 */ 2185 if (softc->media_blksize) { 2186 softc->flags |= SA_FLAG_FIXED; 2187 if (powerof2(softc->media_blksize)) { 2188 softc->blk_shift = 2189 ffs(softc->media_blksize) - 1; 2190 softc->blk_mask = softc->media_blksize - 1; 2191 } else { 2192 softc->blk_mask = ~0; 2193 softc->blk_shift = 0; 2194 } 2195 } else { 2196 /* 2197 * The SCSI-3 spec allows 0 to mean "unspecified". 2198 * The SCSI-1 spec allows 0 to mean 'infinite'. 2199 * 2200 * Either works here. 2201 */ 2202 if (softc->max_blk == 0) { 2203 softc->max_blk = ~0; 2204 } 2205 softc->blk_shift = 0; 2206 if (softc->blk_gran != 0) { 2207 softc->blk_mask = softc->blk_gran - 1; 2208 } else { 2209 softc->blk_mask = 0; 2210 } 2211 } 2212 2213 if (write_protect) 2214 softc->flags |= SA_FLAG_TAPE_WP; 2215 2216 if (comp_supported) { 2217 if (softc->saved_comp_algorithm == 0) 2218 softc->saved_comp_algorithm = 2219 softc->comp_algorithm; 2220 softc->flags |= SA_FLAG_COMP_SUPP; 2221 if (comp_enabled) 2222 softc->flags |= SA_FLAG_COMP_ENABLED; 2223 } else 2224 softc->flags |= SA_FLAG_COMP_UNSUPP; 2225 2226 if ((softc->buffer_mode == SMH_SA_BUF_MODE_NOBUF) && 2227 (softc->quirks & SA_QUIRK_NO_MODESEL) == 0) { 2228 error = sasetparams(periph, SA_PARAM_BUFF_MODE, 0, 2229 0, 0, SF_NO_PRINT); 2230 if (error == 0) { 2231 softc->buffer_mode = SMH_SA_BUF_MODE_SIBUF; 2232 } else { 2233 xpt_print(periph->path, 2234 "unable to set buffered mode\n"); 2235 } 2236 error = 0; /* not an error */ 2237 } 2238 2239 2240 if (error == 0) { 2241 softc->flags |= SA_FLAG_TAPE_MOUNTED; 2242 } 2243 exit: 2244 if (rblim != NULL) 2245 free(rblim, M_SCSISA); 2246 2247 if (error != 0) { 2248 softc->dsreg = MTIO_DSREG_NIL; 2249 } else { 2250 softc->fileno = softc->blkno = 0; 2251 softc->dsreg = MTIO_DSREG_REST; 2252 } 2253 #ifdef SA_1FM_AT_EOD 2254 if ((softc->quirks & SA_QUIRK_2FM) == 0) 2255 softc->quirks |= SA_QUIRK_1FM; 2256 #else 2257 if ((softc->quirks & SA_QUIRK_1FM) == 0) 2258 softc->quirks |= SA_QUIRK_2FM; 2259 #endif 2260 } else 2261 xpt_release_ccb(ccb); 2262 2263 /* 2264 * If we return an error, we're not mounted any more, 2265 * so release any device reservation. 2266 */ 2267 if (error != 0) { 2268 (void) sareservereleaseunit(periph, FALSE); 2269 } else { 2270 /* 2271 * Clear I/O residual. 2272 */ 2273 softc->last_io_resid = 0; 2274 softc->last_ctl_resid = 0; 2275 } 2276 return (error); 2277 } 2278 2279 /* 2280 * How many filemarks do we need to write if we were to terminate the 2281 * tape session right now? Note that this can be a negative number 2282 */ 2283 2284 static int 2285 samarkswanted(struct cam_periph *periph) 2286 { 2287 int markswanted; 2288 struct sa_softc *softc; 2289 2290 softc = (struct sa_softc *)periph->softc; 2291 markswanted = 0; 2292 if ((softc->flags & SA_FLAG_TAPE_WRITTEN) != 0) { 2293 markswanted++; 2294 if (softc->quirks & SA_QUIRK_2FM) 2295 markswanted++; 2296 } 2297 markswanted -= softc->filemarks; 2298 return (markswanted); 2299 } 2300 2301 static int 2302 sacheckeod(struct cam_periph *periph) 2303 { 2304 int error; 2305 int markswanted; 2306 2307 markswanted = samarkswanted(periph); 2308 2309 if (markswanted > 0) { 2310 error = sawritefilemarks(periph, markswanted, FALSE); 2311 } else { 2312 error = 0; 2313 } 2314 return (error); 2315 } 2316 2317 static int 2318 saerror(union ccb *ccb, u_int32_t cflgs, u_int32_t sflgs) 2319 { 2320 static const char *toobig = 2321 "%d-byte tape record bigger than supplied buffer\n"; 2322 struct cam_periph *periph; 2323 struct sa_softc *softc; 2324 struct ccb_scsiio *csio; 2325 struct scsi_sense_data *sense; 2326 u_int32_t resid = 0; 2327 int32_t info = 0; 2328 cam_status status; 2329 int error_code, sense_key, asc, ascq, error, aqvalid; 2330 2331 periph = xpt_path_periph(ccb->ccb_h.path); 2332 softc = (struct sa_softc *)periph->softc; 2333 csio = &ccb->csio; 2334 sense = &csio->sense_data; 2335 scsi_extract_sense(sense, &error_code, &sense_key, &asc, &ascq); 2336 aqvalid = sense->extra_len >= 6; 2337 error = 0; 2338 2339 status = csio->ccb_h.status & CAM_STATUS_MASK; 2340 2341 /* 2342 * Calculate/latch up, any residuals... We do this in a funny 2-step 2343 * so we can print stuff here if we have CAM_DEBUG enabled for this 2344 * unit. 2345 */ 2346 if (status == CAM_SCSI_STATUS_ERROR) { 2347 if ((sense->error_code & SSD_ERRCODE_VALID) != 0) { 2348 info = (int32_t) scsi_4btoul(sense->info); 2349 resid = info; 2350 if ((softc->flags & SA_FLAG_FIXED) != 0) 2351 resid *= softc->media_blksize; 2352 } else { 2353 resid = csio->dxfer_len; 2354 info = resid; 2355 if ((softc->flags & SA_FLAG_FIXED) != 0) { 2356 if (softc->media_blksize) 2357 info /= softc->media_blksize; 2358 } 2359 } 2360 if (CCB_Type(csio) == SA_CCB_BUFFER_IO) { 2361 bcopy((caddr_t) sense, (caddr_t) &softc->last_io_sense, 2362 sizeof (struct scsi_sense_data)); 2363 bcopy(csio->cdb_io.cdb_bytes, softc->last_io_cdb, 2364 (int) csio->cdb_len); 2365 softc->last_io_resid = resid; 2366 softc->last_resid_was_io = 1; 2367 } else { 2368 bcopy((caddr_t) sense, (caddr_t) &softc->last_ctl_sense, 2369 sizeof (struct scsi_sense_data)); 2370 bcopy(csio->cdb_io.cdb_bytes, softc->last_ctl_cdb, 2371 (int) csio->cdb_len); 2372 softc->last_ctl_resid = resid; 2373 softc->last_resid_was_io = 0; 2374 } 2375 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, ("CDB[0]=0x%x Key 0x%x " 2376 "ASC/ASCQ 0x%x/0x%x CAM STATUS 0x%x flags 0x%x resid %d " 2377 "dxfer_len %d\n", csio->cdb_io.cdb_bytes[0] & 0xff, 2378 sense_key, asc, ascq, status, 2379 sense->flags & ~SSD_KEY_RESERVED, resid, csio->dxfer_len)); 2380 } else { 2381 CAM_DEBUG(periph->path, CAM_DEBUG_INFO, 2382 ("Cam Status 0x%x\n", status)); 2383 } 2384 2385 switch (status) { 2386 case CAM_REQ_CMP: 2387 return (0); 2388 case CAM_SCSI_STATUS_ERROR: 2389 /* 2390 * If a read/write command, we handle it here. 2391 */ 2392 if (CCB_Type(csio) != SA_CCB_WAITING) { 2393 break; 2394 } 2395 /* 2396 * If this was just EOM/EOP, Filemark, Setmark or ILI detected 2397 * on a non read/write command, we assume it's not an error 2398 * and propagate the residule and return. 2399 */ 2400 if ((aqvalid && asc == 0 && ascq > 0 && ascq <= 5) || 2401 (aqvalid == 0 && sense_key == SSD_KEY_NO_SENSE)) { 2402 csio->resid = resid; 2403 QFRLS(ccb); 2404 return (0); 2405 } 2406 /* 2407 * Otherwise, we let the common code handle this. 2408 */ 2409 return (cam_periph_error(ccb, cflgs, sflgs, &softc->saved_ccb)); 2410 2411 /* 2412 * XXX: To Be Fixed 2413 * We cannot depend upon CAM honoring retry counts for these. 2414 */ 2415 case CAM_SCSI_BUS_RESET: 2416 case CAM_BDR_SENT: 2417 if (ccb->ccb_h.retry_count <= 0) { 2418 return (EIO); 2419 } 2420 /* FALLTHROUGH */ 2421 default: 2422 return (cam_periph_error(ccb, cflgs, sflgs, &softc->saved_ccb)); 2423 } 2424 2425 /* 2426 * Handle filemark, end of tape, mismatched record sizes.... 2427 * From this point out, we're only handling read/write cases. 2428 * Handle writes && reads differently. 2429 */ 2430 2431 if (csio->cdb_io.cdb_bytes[0] == SA_WRITE) { 2432 if (sense_key == SSD_KEY_VOLUME_OVERFLOW) { 2433 csio->resid = resid; 2434 error = ENOSPC; 2435 } else if (sense->flags & SSD_EOM) { 2436 softc->flags |= SA_FLAG_EOM_PENDING; 2437 /* 2438 * Grotesque as it seems, the few times 2439 * I've actually seen a non-zero resid, 2440 * the tape drive actually lied and had 2441 * written all the data!. 2442 */ 2443 csio->resid = 0; 2444 } 2445 } else { 2446 csio->resid = resid; 2447 if (sense_key == SSD_KEY_BLANK_CHECK) { 2448 if (softc->quirks & SA_QUIRK_1FM) { 2449 error = 0; 2450 softc->flags |= SA_FLAG_EOM_PENDING; 2451 } else { 2452 error = EIO; 2453 } 2454 } else if (sense->flags & SSD_FILEMARK) { 2455 if (softc->flags & SA_FLAG_FIXED) { 2456 error = -1; 2457 softc->flags |= SA_FLAG_EOF_PENDING; 2458 } 2459 /* 2460 * Unconditionally, if we detected a filemark on a read, 2461 * mark that we've run moved a file ahead. 2462 */ 2463 if (softc->fileno != (daddr_t) -1) { 2464 softc->fileno++; 2465 softc->blkno = 0; 2466 csio->ccb_h.ccb_pflags |= SA_POSITION_UPDATED; 2467 } 2468 } 2469 } 2470 2471 /* 2472 * Incorrect Length usually applies to read, but can apply to writes. 2473 */ 2474 if (error == 0 && (sense->flags & SSD_ILI)) { 2475 if (info < 0) { 2476 xpt_print(csio->ccb_h.path, toobig, 2477 csio->dxfer_len - info); 2478 csio->resid = csio->dxfer_len; 2479 error = EIO; 2480 } else { 2481 csio->resid = resid; 2482 if (softc->flags & SA_FLAG_FIXED) { 2483 softc->flags |= SA_FLAG_EIO_PENDING; 2484 } 2485 /* 2486 * Bump the block number if we hadn't seen a filemark. 2487 * Do this independent of errors (we've moved anyway). 2488 */ 2489 if ((sense->flags & SSD_FILEMARK) == 0) { 2490 if (softc->blkno != (daddr_t) -1) { 2491 softc->blkno++; 2492 csio->ccb_h.ccb_pflags |= 2493 SA_POSITION_UPDATED; 2494 } 2495 } 2496 } 2497 } 2498 2499 if (error <= 0) { 2500 /* 2501 * Unfreeze the queue if frozen as we're not returning anything 2502 * to our waiters that would indicate an I/O error has occurred 2503 * (yet). 2504 */ 2505 QFRLS(ccb); 2506 error = 0; 2507 } 2508 return (error); 2509 } 2510 2511 static int 2512 sagetparams(struct cam_periph *periph, sa_params params_to_get, 2513 u_int32_t *blocksize, u_int8_t *density, u_int32_t *numblocks, 2514 int *buff_mode, u_int8_t *write_protect, u_int8_t *speed, 2515 int *comp_supported, int *comp_enabled, u_int32_t *comp_algorithm, 2516 sa_comp_t *tcs) 2517 { 2518 union ccb *ccb; 2519 void *mode_buffer; 2520 struct scsi_mode_header_6 *mode_hdr; 2521 struct scsi_mode_blk_desc *mode_blk; 2522 int mode_buffer_len; 2523 struct sa_softc *softc; 2524 u_int8_t cpage; 2525 int error; 2526 cam_status status; 2527 2528 softc = (struct sa_softc *)periph->softc; 2529 ccb = cam_periph_getccb(periph, 1); 2530 if (softc->quirks & SA_QUIRK_NO_CPAGE) 2531 cpage = SA_DEVICE_CONFIGURATION_PAGE; 2532 else 2533 cpage = SA_DATA_COMPRESSION_PAGE; 2534 2535 retry: 2536 mode_buffer_len = sizeof(*mode_hdr) + sizeof(*mode_blk); 2537 2538 if (params_to_get & SA_PARAM_COMPRESSION) { 2539 if (softc->quirks & SA_QUIRK_NOCOMP) { 2540 *comp_supported = FALSE; 2541 params_to_get &= ~SA_PARAM_COMPRESSION; 2542 } else 2543 mode_buffer_len += sizeof (sa_comp_t); 2544 } 2545 2546 /* XXX Fix M_NOWAIT */ 2547 mode_buffer = malloc(mode_buffer_len, M_SCSISA, M_NOWAIT | M_ZERO); 2548 if (mode_buffer == NULL) { 2549 xpt_release_ccb(ccb); 2550 return (ENOMEM); 2551 } 2552 mode_hdr = (struct scsi_mode_header_6 *)mode_buffer; 2553 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 2554 2555 /* it is safe to retry this */ 2556 scsi_mode_sense(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 2557 SMS_PAGE_CTRL_CURRENT, (params_to_get & SA_PARAM_COMPRESSION) ? 2558 cpage : SMS_VENDOR_SPECIFIC_PAGE, mode_buffer, mode_buffer_len, 2559 SSD_FULL_SIZE, SCSIOP_TIMEOUT); 2560 2561 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2562 softc->device_stats); 2563 QFRLS(ccb); 2564 2565 status = ccb->ccb_h.status & CAM_STATUS_MASK; 2566 2567 if (error == EINVAL && (params_to_get & SA_PARAM_COMPRESSION) != 0) { 2568 /* 2569 * Hmm. Let's see if we can try another page... 2570 * If we've already done that, give up on compression 2571 * for this device and remember this for the future 2572 * and attempt the request without asking for compression 2573 * info. 2574 */ 2575 if (cpage == SA_DATA_COMPRESSION_PAGE) { 2576 cpage = SA_DEVICE_CONFIGURATION_PAGE; 2577 goto retry; 2578 } 2579 softc->quirks |= SA_QUIRK_NOCOMP; 2580 free(mode_buffer, M_SCSISA); 2581 goto retry; 2582 } else if (status == CAM_SCSI_STATUS_ERROR) { 2583 /* Tell the user about the fatal error. */ 2584 scsi_sense_print(&ccb->csio); 2585 goto sagetparamsexit; 2586 } 2587 2588 /* 2589 * If the user only wants the compression information, and 2590 * the device doesn't send back the block descriptor, it's 2591 * no big deal. If the user wants more than just 2592 * compression, though, and the device doesn't pass back the 2593 * block descriptor, we need to send another mode sense to 2594 * get the block descriptor. 2595 */ 2596 if ((mode_hdr->blk_desc_len == 0) && 2597 (params_to_get & SA_PARAM_COMPRESSION) && 2598 (params_to_get & ~(SA_PARAM_COMPRESSION))) { 2599 2600 /* 2601 * Decrease the mode buffer length by the size of 2602 * the compression page, to make sure the data 2603 * there doesn't get overwritten. 2604 */ 2605 mode_buffer_len -= sizeof (sa_comp_t); 2606 2607 /* 2608 * Now move the compression page that we presumably 2609 * got back down the memory chunk a little bit so 2610 * it doesn't get spammed. 2611 */ 2612 bcopy(&mode_hdr[0], &mode_hdr[1], sizeof (sa_comp_t)); 2613 bzero(&mode_hdr[0], sizeof (mode_hdr[0])); 2614 2615 /* 2616 * Now, we issue another mode sense and just ask 2617 * for the block descriptor, etc. 2618 */ 2619 2620 scsi_mode_sense(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 2621 SMS_PAGE_CTRL_CURRENT, SMS_VENDOR_SPECIFIC_PAGE, 2622 mode_buffer, mode_buffer_len, SSD_FULL_SIZE, 2623 SCSIOP_TIMEOUT); 2624 2625 error = cam_periph_runccb(ccb, saerror, 0, SF_NO_PRINT, 2626 softc->device_stats); 2627 QFRLS(ccb); 2628 2629 if (error != 0) 2630 goto sagetparamsexit; 2631 } 2632 2633 if (params_to_get & SA_PARAM_BLOCKSIZE) 2634 *blocksize = scsi_3btoul(mode_blk->blklen); 2635 2636 if (params_to_get & SA_PARAM_NUMBLOCKS) 2637 *numblocks = scsi_3btoul(mode_blk->nblocks); 2638 2639 if (params_to_get & SA_PARAM_BUFF_MODE) 2640 *buff_mode = mode_hdr->dev_spec & SMH_SA_BUF_MODE_MASK; 2641 2642 if (params_to_get & SA_PARAM_DENSITY) 2643 *density = mode_blk->density; 2644 2645 if (params_to_get & SA_PARAM_WP) 2646 *write_protect = (mode_hdr->dev_spec & SMH_SA_WP)? TRUE : FALSE; 2647 2648 if (params_to_get & SA_PARAM_SPEED) 2649 *speed = mode_hdr->dev_spec & SMH_SA_SPEED_MASK; 2650 2651 if (params_to_get & SA_PARAM_COMPRESSION) { 2652 sa_comp_t *ntcs = (sa_comp_t *) &mode_blk[1]; 2653 if (cpage == SA_DATA_COMPRESSION_PAGE) { 2654 struct scsi_data_compression_page *cp = &ntcs->dcomp; 2655 *comp_supported = 2656 (cp->dce_and_dcc & SA_DCP_DCC)? TRUE : FALSE; 2657 *comp_enabled = 2658 (cp->dce_and_dcc & SA_DCP_DCE)? TRUE : FALSE; 2659 *comp_algorithm = scsi_4btoul(cp->comp_algorithm); 2660 } else { 2661 struct scsi_dev_conf_page *cp = &ntcs->dconf; 2662 /* 2663 * We don't really know whether this device supports 2664 * Data Compression if the the algorithm field is 2665 * zero. Just say we do. 2666 */ 2667 *comp_supported = TRUE; 2668 *comp_enabled = 2669 (cp->sel_comp_alg != SA_COMP_NONE)? TRUE : FALSE; 2670 *comp_algorithm = cp->sel_comp_alg; 2671 } 2672 if (tcs != NULL) 2673 bcopy(ntcs, tcs, sizeof (sa_comp_t)); 2674 } 2675 2676 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 2677 int idx; 2678 char *xyz = mode_buffer; 2679 xpt_print_path(periph->path); 2680 printf("Mode Sense Data="); 2681 for (idx = 0; idx < mode_buffer_len; idx++) 2682 printf(" 0x%02x", xyz[idx] & 0xff); 2683 printf("\n"); 2684 } 2685 2686 sagetparamsexit: 2687 2688 xpt_release_ccb(ccb); 2689 free(mode_buffer, M_SCSISA); 2690 return (error); 2691 } 2692 2693 /* 2694 * The purpose of this function is to set one of four different parameters 2695 * for a tape drive: 2696 * - blocksize 2697 * - density 2698 * - compression / compression algorithm 2699 * - buffering mode 2700 * 2701 * The assumption is that this will be called from saioctl(), and therefore 2702 * from a process context. Thus the waiting malloc calls below. If that 2703 * assumption ever changes, the malloc calls should be changed to be 2704 * NOWAIT mallocs. 2705 * 2706 * Any or all of the four parameters may be set when this function is 2707 * called. It should handle setting more than one parameter at once. 2708 */ 2709 static int 2710 sasetparams(struct cam_periph *periph, sa_params params_to_set, 2711 u_int32_t blocksize, u_int8_t density, u_int32_t calg, 2712 u_int32_t sense_flags) 2713 { 2714 struct sa_softc *softc; 2715 u_int32_t current_blocksize; 2716 u_int32_t current_calg; 2717 u_int8_t current_density; 2718 u_int8_t current_speed; 2719 int comp_enabled, comp_supported; 2720 void *mode_buffer; 2721 int mode_buffer_len; 2722 struct scsi_mode_header_6 *mode_hdr; 2723 struct scsi_mode_blk_desc *mode_blk; 2724 sa_comp_t *ccomp, *cpage; 2725 int buff_mode; 2726 union ccb *ccb = NULL; 2727 int error; 2728 2729 softc = (struct sa_softc *)periph->softc; 2730 2731 ccomp = malloc(sizeof (sa_comp_t), M_SCSISA, M_NOWAIT); 2732 if (ccomp == NULL) 2733 return (ENOMEM); 2734 2735 /* 2736 * Since it doesn't make sense to set the number of blocks, or 2737 * write protection, we won't try to get the current value. We 2738 * always want to get the blocksize, so we can set it back to the 2739 * proper value. 2740 */ 2741 error = sagetparams(periph, 2742 params_to_set | SA_PARAM_BLOCKSIZE | SA_PARAM_SPEED, 2743 ¤t_blocksize, ¤t_density, NULL, &buff_mode, NULL, 2744 ¤t_speed, &comp_supported, &comp_enabled, 2745 ¤t_calg, ccomp); 2746 2747 if (error != 0) { 2748 free(ccomp, M_SCSISA); 2749 return (error); 2750 } 2751 2752 mode_buffer_len = sizeof(*mode_hdr) + sizeof(*mode_blk); 2753 if (params_to_set & SA_PARAM_COMPRESSION) 2754 mode_buffer_len += sizeof (sa_comp_t); 2755 2756 mode_buffer = malloc(mode_buffer_len, M_SCSISA, M_NOWAIT | M_ZERO); 2757 if (mode_buffer == NULL) { 2758 free(ccomp, M_SCSISA); 2759 return (ENOMEM); 2760 } 2761 2762 mode_hdr = (struct scsi_mode_header_6 *)mode_buffer; 2763 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 2764 2765 ccb = cam_periph_getccb(periph, 1); 2766 2767 retry: 2768 2769 if (params_to_set & SA_PARAM_COMPRESSION) { 2770 if (mode_blk) { 2771 cpage = (sa_comp_t *)&mode_blk[1]; 2772 } else { 2773 cpage = (sa_comp_t *)&mode_hdr[1]; 2774 } 2775 bcopy(ccomp, cpage, sizeof (sa_comp_t)); 2776 cpage->hdr.pagecode &= ~0x80; 2777 } else 2778 cpage = NULL; 2779 2780 /* 2781 * If the caller wants us to set the blocksize, use the one they 2782 * pass in. Otherwise, use the blocksize we got back from the 2783 * mode select above. 2784 */ 2785 if (mode_blk) { 2786 if (params_to_set & SA_PARAM_BLOCKSIZE) 2787 scsi_ulto3b(blocksize, mode_blk->blklen); 2788 else 2789 scsi_ulto3b(current_blocksize, mode_blk->blklen); 2790 2791 /* 2792 * Set density if requested, else preserve old density. 2793 * SCSI_SAME_DENSITY only applies to SCSI-2 or better 2794 * devices, else density we've latched up in our softc. 2795 */ 2796 if (params_to_set & SA_PARAM_DENSITY) { 2797 mode_blk->density = density; 2798 } else if (softc->scsi_rev > SCSI_REV_CCS) { 2799 mode_blk->density = SCSI_SAME_DENSITY; 2800 } else { 2801 mode_blk->density = softc->media_density; 2802 } 2803 } 2804 2805 /* 2806 * For mode selects, these two fields must be zero. 2807 */ 2808 mode_hdr->data_length = 0; 2809 mode_hdr->medium_type = 0; 2810 2811 /* set the speed to the current value */ 2812 mode_hdr->dev_spec = current_speed; 2813 2814 /* if set, set single-initiator buffering mode */ 2815 if (softc->buffer_mode == SMH_SA_BUF_MODE_SIBUF) { 2816 mode_hdr->dev_spec |= SMH_SA_BUF_MODE_SIBUF; 2817 } 2818 2819 if (mode_blk) 2820 mode_hdr->blk_desc_len = sizeof(struct scsi_mode_blk_desc); 2821 else 2822 mode_hdr->blk_desc_len = 0; 2823 2824 /* 2825 * First, if the user wants us to set the compression algorithm or 2826 * just turn compression on, check to make sure that this drive 2827 * supports compression. 2828 */ 2829 if (params_to_set & SA_PARAM_COMPRESSION) { 2830 /* 2831 * If the compression algorithm is 0, disable compression. 2832 * If the compression algorithm is non-zero, enable 2833 * compression and set the compression type to the 2834 * specified compression algorithm, unless the algorithm is 2835 * MT_COMP_ENABLE. In that case, we look at the 2836 * compression algorithm that is currently set and if it is 2837 * non-zero, we leave it as-is. If it is zero, and we have 2838 * saved a compression algorithm from a time when 2839 * compression was enabled before, set the compression to 2840 * the saved value. 2841 */ 2842 switch (ccomp->hdr.pagecode & ~0x80) { 2843 case SA_DEVICE_CONFIGURATION_PAGE: 2844 { 2845 struct scsi_dev_conf_page *dcp = &cpage->dconf; 2846 if (calg == 0) { 2847 dcp->sel_comp_alg = SA_COMP_NONE; 2848 break; 2849 } 2850 if (calg != MT_COMP_ENABLE) { 2851 dcp->sel_comp_alg = calg; 2852 } else if (dcp->sel_comp_alg == SA_COMP_NONE && 2853 softc->saved_comp_algorithm != 0) { 2854 dcp->sel_comp_alg = softc->saved_comp_algorithm; 2855 } 2856 break; 2857 } 2858 case SA_DATA_COMPRESSION_PAGE: 2859 if (ccomp->dcomp.dce_and_dcc & SA_DCP_DCC) { 2860 struct scsi_data_compression_page *dcp = &cpage->dcomp; 2861 if (calg == 0) { 2862 /* 2863 * Disable compression, but leave the 2864 * decompression and the capability bit 2865 * alone. 2866 */ 2867 dcp->dce_and_dcc = SA_DCP_DCC; 2868 dcp->dde_and_red |= SA_DCP_DDE; 2869 break; 2870 } 2871 /* enable compression && decompression */ 2872 dcp->dce_and_dcc = SA_DCP_DCE | SA_DCP_DCC; 2873 dcp->dde_and_red |= SA_DCP_DDE; 2874 /* 2875 * If there, use compression algorithm from caller. 2876 * Otherwise, if there's a saved compression algorithm 2877 * and there is no current algorithm, use the saved 2878 * algorithm. Else parrot back what we got and hope 2879 * for the best. 2880 */ 2881 if (calg != MT_COMP_ENABLE) { 2882 scsi_ulto4b(calg, dcp->comp_algorithm); 2883 scsi_ulto4b(calg, dcp->decomp_algorithm); 2884 } else if (scsi_4btoul(dcp->comp_algorithm) == 0 && 2885 softc->saved_comp_algorithm != 0) { 2886 scsi_ulto4b(softc->saved_comp_algorithm, 2887 dcp->comp_algorithm); 2888 scsi_ulto4b(softc->saved_comp_algorithm, 2889 dcp->decomp_algorithm); 2890 } 2891 break; 2892 } 2893 /* 2894 * Compression does not appear to be supported- 2895 * at least via the DATA COMPRESSION page. It 2896 * would be too much to ask us to believe that 2897 * the page itself is supported, but incorrectly 2898 * reports an ability to manipulate data compression, 2899 * so we'll assume that this device doesn't support 2900 * compression. We can just fall through for that. 2901 */ 2902 /* FALLTHROUGH */ 2903 default: 2904 /* 2905 * The drive doesn't seem to support compression, 2906 * so turn off the set compression bit. 2907 */ 2908 params_to_set &= ~SA_PARAM_COMPRESSION; 2909 xpt_print(periph->path, 2910 "device does not seem to support compression\n"); 2911 2912 /* 2913 * If that was the only thing the user wanted us to set, 2914 * clean up allocated resources and return with 2915 * 'operation not supported'. 2916 */ 2917 if (params_to_set == SA_PARAM_NONE) { 2918 free(mode_buffer, M_SCSISA); 2919 xpt_release_ccb(ccb); 2920 return (ENODEV); 2921 } 2922 2923 /* 2924 * That wasn't the only thing the user wanted us to set. 2925 * So, decrease the stated mode buffer length by the 2926 * size of the compression mode page. 2927 */ 2928 mode_buffer_len -= sizeof(sa_comp_t); 2929 } 2930 } 2931 2932 /* It is safe to retry this operation */ 2933 scsi_mode_select(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, 2934 (params_to_set & SA_PARAM_COMPRESSION)? TRUE : FALSE, 2935 FALSE, mode_buffer, mode_buffer_len, SSD_FULL_SIZE, SCSIOP_TIMEOUT); 2936 2937 error = cam_periph_runccb(ccb, saerror, 0, 2938 sense_flags, softc->device_stats); 2939 QFRLS(ccb); 2940 2941 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 2942 int idx; 2943 char *xyz = mode_buffer; 2944 xpt_print_path(periph->path); 2945 printf("Err%d, Mode Select Data=", error); 2946 for (idx = 0; idx < mode_buffer_len; idx++) 2947 printf(" 0x%02x", xyz[idx] & 0xff); 2948 printf("\n"); 2949 } 2950 2951 2952 if (error) { 2953 /* 2954 * If we can, try without setting density/blocksize. 2955 */ 2956 if (mode_blk) { 2957 if ((params_to_set & 2958 (SA_PARAM_DENSITY|SA_PARAM_BLOCKSIZE)) == 0) { 2959 mode_blk = NULL; 2960 goto retry; 2961 } 2962 } else { 2963 mode_blk = (struct scsi_mode_blk_desc *)&mode_hdr[1]; 2964 cpage = (sa_comp_t *)&mode_blk[1]; 2965 } 2966 2967 /* 2968 * If we were setting the blocksize, and that failed, we 2969 * want to set it to its original value. If we weren't 2970 * setting the blocksize, we don't want to change it. 2971 */ 2972 scsi_ulto3b(current_blocksize, mode_blk->blklen); 2973 2974 /* 2975 * Set density if requested, else preserve old density. 2976 * SCSI_SAME_DENSITY only applies to SCSI-2 or better 2977 * devices, else density we've latched up in our softc. 2978 */ 2979 if (params_to_set & SA_PARAM_DENSITY) { 2980 mode_blk->density = current_density; 2981 } else if (softc->scsi_rev > SCSI_REV_CCS) { 2982 mode_blk->density = SCSI_SAME_DENSITY; 2983 } else { 2984 mode_blk->density = softc->media_density; 2985 } 2986 2987 if (params_to_set & SA_PARAM_COMPRESSION) 2988 bcopy(ccomp, cpage, sizeof (sa_comp_t)); 2989 2990 /* 2991 * The retry count is the only CCB field that might have been 2992 * changed that we care about, so reset it back to 1. 2993 */ 2994 ccb->ccb_h.retry_count = 1; 2995 cam_periph_runccb(ccb, saerror, 0, sense_flags, 2996 softc->device_stats); 2997 QFRLS(ccb); 2998 } 2999 3000 xpt_release_ccb(ccb); 3001 3002 if (ccomp != NULL) 3003 free(ccomp, M_SCSISA); 3004 3005 if (params_to_set & SA_PARAM_COMPRESSION) { 3006 if (error) { 3007 softc->flags &= ~SA_FLAG_COMP_ENABLED; 3008 /* 3009 * Even if we get an error setting compression, 3010 * do not say that we don't support it. We could 3011 * have been wrong, or it may be media specific. 3012 * softc->flags &= ~SA_FLAG_COMP_SUPP; 3013 */ 3014 softc->saved_comp_algorithm = softc->comp_algorithm; 3015 softc->comp_algorithm = 0; 3016 } else { 3017 softc->flags |= SA_FLAG_COMP_ENABLED; 3018 softc->comp_algorithm = calg; 3019 } 3020 } 3021 3022 free(mode_buffer, M_SCSISA); 3023 return (error); 3024 } 3025 3026 static void 3027 saprevent(struct cam_periph *periph, int action) 3028 { 3029 struct sa_softc *softc; 3030 union ccb *ccb; 3031 int error, sf; 3032 3033 softc = (struct sa_softc *)periph->softc; 3034 3035 if ((action == PR_ALLOW) && (softc->flags & SA_FLAG_TAPE_LOCKED) == 0) 3036 return; 3037 if ((action == PR_PREVENT) && (softc->flags & SA_FLAG_TAPE_LOCKED) != 0) 3038 return; 3039 3040 /* 3041 * We can be quiet about illegal requests. 3042 */ 3043 if (CAM_DEBUGGED(periph->path, CAM_DEBUG_INFO)) { 3044 sf = 0; 3045 } else 3046 sf = SF_QUIET_IR; 3047 3048 ccb = cam_periph_getccb(periph, 1); 3049 3050 /* It is safe to retry this operation */ 3051 scsi_prevent(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, action, 3052 SSD_FULL_SIZE, SCSIOP_TIMEOUT); 3053 3054 error = cam_periph_runccb(ccb, saerror, 0, sf, softc->device_stats); 3055 QFRLS(ccb); 3056 if (error == 0) { 3057 if (action == PR_ALLOW) 3058 softc->flags &= ~SA_FLAG_TAPE_LOCKED; 3059 else 3060 softc->flags |= SA_FLAG_TAPE_LOCKED; 3061 } 3062 3063 xpt_release_ccb(ccb); 3064 } 3065 3066 static int 3067 sarewind(struct cam_periph *periph) 3068 { 3069 union ccb *ccb; 3070 struct sa_softc *softc; 3071 int error; 3072 3073 softc = (struct sa_softc *)periph->softc; 3074 3075 ccb = cam_periph_getccb(periph, 1); 3076 3077 /* It is safe to retry this operation */ 3078 scsi_rewind(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, FALSE, 3079 SSD_FULL_SIZE, REWIND_TIMEOUT); 3080 3081 softc->dsreg = MTIO_DSREG_REW; 3082 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3083 softc->dsreg = MTIO_DSREG_REST; 3084 3085 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3086 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 3087 3088 xpt_release_ccb(ccb); 3089 if (error == 0) 3090 softc->fileno = softc->blkno = (daddr_t) 0; 3091 else 3092 softc->fileno = softc->blkno = (daddr_t) -1; 3093 return (error); 3094 } 3095 3096 static int 3097 saspace(struct cam_periph *periph, int count, scsi_space_code code) 3098 { 3099 union ccb *ccb; 3100 struct sa_softc *softc; 3101 int error; 3102 3103 softc = (struct sa_softc *)periph->softc; 3104 3105 ccb = cam_periph_getccb(periph, 1); 3106 3107 /* This cannot be retried */ 3108 3109 scsi_space(&ccb->csio, 0, sadone, MSG_SIMPLE_Q_TAG, code, count, 3110 SSD_FULL_SIZE, SPACE_TIMEOUT); 3111 3112 /* 3113 * Clear residual because we will be using it. 3114 */ 3115 softc->last_ctl_resid = 0; 3116 3117 softc->dsreg = (count < 0)? MTIO_DSREG_REV : MTIO_DSREG_FWD; 3118 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3119 softc->dsreg = MTIO_DSREG_REST; 3120 3121 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3122 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 3123 3124 xpt_release_ccb(ccb); 3125 3126 /* 3127 * If a spacing operation has failed, we need to invalidate 3128 * this mount. 3129 * 3130 * If the spacing operation was setmarks or to end of recorded data, 3131 * we no longer know our relative position. 3132 * 3133 * If the spacing operations was spacing files in reverse, we 3134 * take account of the residual, but still check against less 3135 * than zero- if we've gone negative, we must have hit BOT. 3136 * 3137 * If the spacing operations was spacing records in reverse and 3138 * we have a residual, we've either hit BOT or hit a filemark. 3139 * In the former case, we know our new record number (0). In 3140 * the latter case, we have absolutely no idea what the real 3141 * record number is- we've stopped between the end of the last 3142 * record in the previous file and the filemark that stopped 3143 * our spacing backwards. 3144 */ 3145 if (error) { 3146 softc->fileno = softc->blkno = (daddr_t) -1; 3147 } else if (code == SS_SETMARKS || code == SS_EOD) { 3148 softc->fileno = softc->blkno = (daddr_t) -1; 3149 } else if (code == SS_FILEMARKS && softc->fileno != (daddr_t) -1) { 3150 softc->fileno += (count - softc->last_ctl_resid); 3151 if (softc->fileno < 0) /* we must of hit BOT */ 3152 softc->fileno = 0; 3153 softc->blkno = 0; 3154 } else if (code == SS_BLOCKS && softc->blkno != (daddr_t) -1) { 3155 softc->blkno += (count - softc->last_ctl_resid); 3156 if (count < 0) { 3157 if (softc->last_ctl_resid || softc->blkno < 0) { 3158 if (softc->fileno == 0) { 3159 softc->blkno = 0; 3160 } else { 3161 softc->blkno = (daddr_t) -1; 3162 } 3163 } 3164 } 3165 } 3166 return (error); 3167 } 3168 3169 static int 3170 sawritefilemarks(struct cam_periph *periph, int nmarks, int setmarks) 3171 { 3172 union ccb *ccb; 3173 struct sa_softc *softc; 3174 int error, nwm = 0; 3175 3176 softc = (struct sa_softc *)periph->softc; 3177 if (softc->open_rdonly) 3178 return (EBADF); 3179 3180 ccb = cam_periph_getccb(periph, 1); 3181 /* 3182 * Clear residual because we will be using it. 3183 */ 3184 softc->last_ctl_resid = 0; 3185 3186 softc->dsreg = MTIO_DSREG_FMK; 3187 /* this *must* not be retried */ 3188 scsi_write_filemarks(&ccb->csio, 0, sadone, MSG_SIMPLE_Q_TAG, 3189 FALSE, setmarks, nmarks, SSD_FULL_SIZE, IO_TIMEOUT); 3190 softc->dsreg = MTIO_DSREG_REST; 3191 3192 3193 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3194 3195 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3196 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 3197 3198 if (error == 0 && nmarks) { 3199 struct sa_softc *softc = (struct sa_softc *)periph->softc; 3200 nwm = nmarks - softc->last_ctl_resid; 3201 softc->filemarks += nwm; 3202 } 3203 3204 xpt_release_ccb(ccb); 3205 3206 /* 3207 * Update relative positions (if we're doing that). 3208 */ 3209 if (error) { 3210 softc->fileno = softc->blkno = (daddr_t) -1; 3211 } else if (softc->fileno != (daddr_t) -1) { 3212 softc->fileno += nwm; 3213 softc->blkno = 0; 3214 } 3215 return (error); 3216 } 3217 3218 static int 3219 sardpos(struct cam_periph *periph, int hard, u_int32_t *blkptr) 3220 { 3221 struct scsi_tape_position_data loc; 3222 union ccb *ccb; 3223 struct sa_softc *softc = (struct sa_softc *)periph->softc; 3224 int error; 3225 3226 /* 3227 * We try and flush any buffered writes here if we were writing 3228 * and we're trying to get hardware block position. It eats 3229 * up performance substantially, but I'm wary of drive firmware. 3230 * 3231 * I think that *logical* block position is probably okay- 3232 * but hardware block position might have to wait for data 3233 * to hit media to be valid. Caveat Emptor. 3234 */ 3235 3236 if (hard && (softc->flags & SA_FLAG_TAPE_WRITTEN)) { 3237 error = sawritefilemarks(periph, 0, 0); 3238 if (error && error != EACCES) 3239 return (error); 3240 } 3241 3242 ccb = cam_periph_getccb(periph, 1); 3243 scsi_read_position(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, 3244 hard, &loc, SSD_FULL_SIZE, SCSIOP_TIMEOUT); 3245 softc->dsreg = MTIO_DSREG_RBSY; 3246 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3247 softc->dsreg = MTIO_DSREG_REST; 3248 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3249 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, 0); 3250 3251 if (error == 0) { 3252 if (loc.flags & SA_RPOS_UNCERTAIN) { 3253 error = EINVAL; /* nothing is certain */ 3254 } else { 3255 *blkptr = scsi_4btoul(loc.firstblk); 3256 } 3257 } 3258 3259 xpt_release_ccb(ccb); 3260 return (error); 3261 } 3262 3263 static int 3264 sasetpos(struct cam_periph *periph, int hard, u_int32_t *blkptr) 3265 { 3266 union ccb *ccb; 3267 struct sa_softc *softc; 3268 int error; 3269 3270 /* 3271 * We used to try and flush any buffered writes here. 3272 * Now we push this onto user applications to either 3273 * flush the pending writes themselves (via a zero count 3274 * WRITE FILEMARKS command) or they can trust their tape 3275 * drive to do this correctly for them. 3276 */ 3277 3278 softc = (struct sa_softc *)periph->softc; 3279 ccb = cam_periph_getccb(periph, 1); 3280 3281 3282 scsi_set_position(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, 3283 hard, *blkptr, SSD_FULL_SIZE, SPACE_TIMEOUT); 3284 3285 3286 softc->dsreg = MTIO_DSREG_POS; 3287 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3288 softc->dsreg = MTIO_DSREG_REST; 3289 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3290 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, 0); 3291 xpt_release_ccb(ccb); 3292 /* 3293 * Note relative file && block number position as now unknown. 3294 */ 3295 softc->fileno = softc->blkno = (daddr_t) -1; 3296 return (error); 3297 } 3298 3299 static int 3300 saretension(struct cam_periph *periph) 3301 { 3302 union ccb *ccb; 3303 struct sa_softc *softc; 3304 int error; 3305 3306 softc = (struct sa_softc *)periph->softc; 3307 3308 ccb = cam_periph_getccb(periph, 1); 3309 3310 /* It is safe to retry this operation */ 3311 scsi_load_unload(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 3312 FALSE, TRUE, TRUE, SSD_FULL_SIZE, ERASE_TIMEOUT); 3313 3314 softc->dsreg = MTIO_DSREG_TEN; 3315 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3316 softc->dsreg = MTIO_DSREG_REST; 3317 3318 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3319 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 3320 xpt_release_ccb(ccb); 3321 if (error == 0) 3322 softc->fileno = softc->blkno = (daddr_t) 0; 3323 else 3324 softc->fileno = softc->blkno = (daddr_t) -1; 3325 return (error); 3326 } 3327 3328 static int 3329 sareservereleaseunit(struct cam_periph *periph, int reserve) 3330 { 3331 union ccb *ccb; 3332 struct sa_softc *softc; 3333 int error; 3334 3335 softc = (struct sa_softc *)periph->softc; 3336 ccb = cam_periph_getccb(periph, 1); 3337 3338 /* It is safe to retry this operation */ 3339 scsi_reserve_release_unit(&ccb->csio, 2, sadone, MSG_SIMPLE_Q_TAG, 3340 FALSE, 0, SSD_FULL_SIZE, SCSIOP_TIMEOUT, reserve); 3341 softc->dsreg = MTIO_DSREG_RBSY; 3342 error = cam_periph_runccb(ccb, saerror, 0, 3343 SF_RETRY_UA | SF_NO_PRINT, softc->device_stats); 3344 softc->dsreg = MTIO_DSREG_REST; 3345 QFRLS(ccb); 3346 xpt_release_ccb(ccb); 3347 3348 /* 3349 * If the error was Illegal Request, then the device doesn't support 3350 * RESERVE/RELEASE. This is not an error. 3351 */ 3352 if (error == EINVAL) { 3353 error = 0; 3354 } 3355 3356 return (error); 3357 } 3358 3359 static int 3360 saloadunload(struct cam_periph *periph, int load) 3361 { 3362 union ccb *ccb; 3363 struct sa_softc *softc; 3364 int error; 3365 3366 softc = (struct sa_softc *)periph->softc; 3367 3368 ccb = cam_periph_getccb(periph, 1); 3369 3370 /* It is safe to retry this operation */ 3371 scsi_load_unload(&ccb->csio, 5, sadone, MSG_SIMPLE_Q_TAG, FALSE, 3372 FALSE, FALSE, load, SSD_FULL_SIZE, REWIND_TIMEOUT); 3373 3374 softc->dsreg = (load)? MTIO_DSREG_LD : MTIO_DSREG_UNL; 3375 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3376 softc->dsreg = MTIO_DSREG_REST; 3377 QFRLS(ccb); 3378 xpt_release_ccb(ccb); 3379 3380 if (error || load == 0) 3381 softc->fileno = softc->blkno = (daddr_t) -1; 3382 else if (error == 0) 3383 softc->fileno = softc->blkno = (daddr_t) 0; 3384 return (error); 3385 } 3386 3387 static int 3388 saerase(struct cam_periph *periph, int longerase) 3389 { 3390 3391 union ccb *ccb; 3392 struct sa_softc *softc; 3393 int error; 3394 3395 softc = (struct sa_softc *)periph->softc; 3396 if (softc->open_rdonly) 3397 return (EBADF); 3398 3399 ccb = cam_periph_getccb(periph, 1); 3400 3401 scsi_erase(&ccb->csio, 1, sadone, MSG_SIMPLE_Q_TAG, FALSE, longerase, 3402 SSD_FULL_SIZE, ERASE_TIMEOUT); 3403 3404 softc->dsreg = MTIO_DSREG_ZER; 3405 error = cam_periph_runccb(ccb, saerror, 0, 0, softc->device_stats); 3406 softc->dsreg = MTIO_DSREG_REST; 3407 3408 if ((ccb->ccb_h.status & CAM_DEV_QFRZN) != 0) 3409 cam_release_devq(ccb->ccb_h.path, 0, 0, 0, FALSE); 3410 xpt_release_ccb(ccb); 3411 return (error); 3412 } 3413 3414 #endif /* _KERNEL */ 3415 3416 /* 3417 * Read tape block limits command. 3418 */ 3419 void 3420 scsi_read_block_limits(struct ccb_scsiio *csio, u_int32_t retries, 3421 void (*cbfcnp)(struct cam_periph *, union ccb *), 3422 u_int8_t tag_action, 3423 struct scsi_read_block_limits_data *rlimit_buf, 3424 u_int8_t sense_len, u_int32_t timeout) 3425 { 3426 struct scsi_read_block_limits *scsi_cmd; 3427 3428 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_IN, tag_action, 3429 (u_int8_t *)rlimit_buf, sizeof(*rlimit_buf), sense_len, 3430 sizeof(*scsi_cmd), timeout); 3431 3432 scsi_cmd = (struct scsi_read_block_limits *)&csio->cdb_io.cdb_bytes; 3433 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3434 scsi_cmd->opcode = READ_BLOCK_LIMITS; 3435 } 3436 3437 void 3438 scsi_sa_read_write(struct ccb_scsiio *csio, u_int32_t retries, 3439 void (*cbfcnp)(struct cam_periph *, union ccb *), 3440 u_int8_t tag_action, int readop, int sli, 3441 int fixed, u_int32_t length, u_int8_t *data_ptr, 3442 u_int32_t dxfer_len, u_int8_t sense_len, u_int32_t timeout) 3443 { 3444 struct scsi_sa_rw *scsi_cmd; 3445 3446 scsi_cmd = (struct scsi_sa_rw *)&csio->cdb_io.cdb_bytes; 3447 scsi_cmd->opcode = readop ? SA_READ : SA_WRITE; 3448 scsi_cmd->sli_fixed = 0; 3449 if (sli && readop) 3450 scsi_cmd->sli_fixed |= SAR_SLI; 3451 if (fixed) 3452 scsi_cmd->sli_fixed |= SARW_FIXED; 3453 scsi_ulto3b(length, scsi_cmd->length); 3454 scsi_cmd->control = 0; 3455 3456 cam_fill_csio(csio, retries, cbfcnp, readop ? CAM_DIR_IN : CAM_DIR_OUT, 3457 tag_action, data_ptr, dxfer_len, sense_len, 3458 sizeof(*scsi_cmd), timeout); 3459 } 3460 3461 void 3462 scsi_load_unload(struct ccb_scsiio *csio, u_int32_t retries, 3463 void (*cbfcnp)(struct cam_periph *, union ccb *), 3464 u_int8_t tag_action, int immediate, int eot, 3465 int reten, int load, u_int8_t sense_len, 3466 u_int32_t timeout) 3467 { 3468 struct scsi_load_unload *scsi_cmd; 3469 3470 scsi_cmd = (struct scsi_load_unload *)&csio->cdb_io.cdb_bytes; 3471 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3472 scsi_cmd->opcode = LOAD_UNLOAD; 3473 if (immediate) 3474 scsi_cmd->immediate = SLU_IMMED; 3475 if (eot) 3476 scsi_cmd->eot_reten_load |= SLU_EOT; 3477 if (reten) 3478 scsi_cmd->eot_reten_load |= SLU_RETEN; 3479 if (load) 3480 scsi_cmd->eot_reten_load |= SLU_LOAD; 3481 3482 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, 3483 NULL, 0, sense_len, sizeof(*scsi_cmd), timeout); 3484 } 3485 3486 void 3487 scsi_rewind(struct ccb_scsiio *csio, u_int32_t retries, 3488 void (*cbfcnp)(struct cam_periph *, union ccb *), 3489 u_int8_t tag_action, int immediate, u_int8_t sense_len, 3490 u_int32_t timeout) 3491 { 3492 struct scsi_rewind *scsi_cmd; 3493 3494 scsi_cmd = (struct scsi_rewind *)&csio->cdb_io.cdb_bytes; 3495 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3496 scsi_cmd->opcode = REWIND; 3497 if (immediate) 3498 scsi_cmd->immediate = SREW_IMMED; 3499 3500 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3501 0, sense_len, sizeof(*scsi_cmd), timeout); 3502 } 3503 3504 void 3505 scsi_space(struct ccb_scsiio *csio, u_int32_t retries, 3506 void (*cbfcnp)(struct cam_periph *, union ccb *), 3507 u_int8_t tag_action, scsi_space_code code, 3508 u_int32_t count, u_int8_t sense_len, u_int32_t timeout) 3509 { 3510 struct scsi_space *scsi_cmd; 3511 3512 scsi_cmd = (struct scsi_space *)&csio->cdb_io.cdb_bytes; 3513 scsi_cmd->opcode = SPACE; 3514 scsi_cmd->code = code; 3515 scsi_ulto3b(count, scsi_cmd->count); 3516 scsi_cmd->control = 0; 3517 3518 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3519 0, sense_len, sizeof(*scsi_cmd), timeout); 3520 } 3521 3522 void 3523 scsi_write_filemarks(struct ccb_scsiio *csio, u_int32_t retries, 3524 void (*cbfcnp)(struct cam_periph *, union ccb *), 3525 u_int8_t tag_action, int immediate, int setmark, 3526 u_int32_t num_marks, u_int8_t sense_len, 3527 u_int32_t timeout) 3528 { 3529 struct scsi_write_filemarks *scsi_cmd; 3530 3531 scsi_cmd = (struct scsi_write_filemarks *)&csio->cdb_io.cdb_bytes; 3532 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3533 scsi_cmd->opcode = WRITE_FILEMARKS; 3534 if (immediate) 3535 scsi_cmd->byte2 |= SWFMRK_IMMED; 3536 if (setmark) 3537 scsi_cmd->byte2 |= SWFMRK_WSMK; 3538 3539 scsi_ulto3b(num_marks, scsi_cmd->num_marks); 3540 3541 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3542 0, sense_len, sizeof(*scsi_cmd), timeout); 3543 } 3544 3545 /* 3546 * The reserve and release unit commands differ only by their opcodes. 3547 */ 3548 void 3549 scsi_reserve_release_unit(struct ccb_scsiio *csio, u_int32_t retries, 3550 void (*cbfcnp)(struct cam_periph *, union ccb *), 3551 u_int8_t tag_action, int third_party, 3552 int third_party_id, u_int8_t sense_len, 3553 u_int32_t timeout, int reserve) 3554 { 3555 struct scsi_reserve_release_unit *scsi_cmd; 3556 3557 scsi_cmd = (struct scsi_reserve_release_unit *)&csio->cdb_io.cdb_bytes; 3558 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3559 3560 if (reserve) 3561 scsi_cmd->opcode = RESERVE_UNIT; 3562 else 3563 scsi_cmd->opcode = RELEASE_UNIT; 3564 3565 if (third_party) { 3566 scsi_cmd->lun_thirdparty |= SRRU_3RD_PARTY; 3567 scsi_cmd->lun_thirdparty |= 3568 ((third_party_id << SRRU_3RD_SHAMT) & SRRU_3RD_MASK); 3569 } 3570 3571 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3572 0, sense_len, sizeof(*scsi_cmd), timeout); 3573 } 3574 3575 void 3576 scsi_erase(struct ccb_scsiio *csio, u_int32_t retries, 3577 void (*cbfcnp)(struct cam_periph *, union ccb *), 3578 u_int8_t tag_action, int immediate, int long_erase, 3579 u_int8_t sense_len, u_int32_t timeout) 3580 { 3581 struct scsi_erase *scsi_cmd; 3582 3583 scsi_cmd = (struct scsi_erase *)&csio->cdb_io.cdb_bytes; 3584 bzero(scsi_cmd, sizeof(*scsi_cmd)); 3585 3586 scsi_cmd->opcode = ERASE; 3587 3588 if (immediate) 3589 scsi_cmd->lun_imm_long |= SE_IMMED; 3590 3591 if (long_erase) 3592 scsi_cmd->lun_imm_long |= SE_LONG; 3593 3594 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, NULL, 3595 0, sense_len, sizeof(*scsi_cmd), timeout); 3596 } 3597 3598 /* 3599 * Read Tape Position command. 3600 */ 3601 void 3602 scsi_read_position(struct ccb_scsiio *csio, u_int32_t retries, 3603 void (*cbfcnp)(struct cam_periph *, union ccb *), 3604 u_int8_t tag_action, int hardsoft, 3605 struct scsi_tape_position_data *sbp, 3606 u_int8_t sense_len, u_int32_t timeout) 3607 { 3608 struct scsi_tape_read_position *scmd; 3609 3610 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_IN, tag_action, 3611 (u_int8_t *)sbp, sizeof (*sbp), sense_len, sizeof(*scmd), timeout); 3612 scmd = (struct scsi_tape_read_position *)&csio->cdb_io.cdb_bytes; 3613 bzero(scmd, sizeof(*scmd)); 3614 scmd->opcode = READ_POSITION; 3615 scmd->byte1 = hardsoft; 3616 } 3617 3618 /* 3619 * Set Tape Position command. 3620 */ 3621 void 3622 scsi_set_position(struct ccb_scsiio *csio, u_int32_t retries, 3623 void (*cbfcnp)(struct cam_periph *, union ccb *), 3624 u_int8_t tag_action, int hardsoft, u_int32_t blkno, 3625 u_int8_t sense_len, u_int32_t timeout) 3626 { 3627 struct scsi_tape_locate *scmd; 3628 3629 cam_fill_csio(csio, retries, cbfcnp, CAM_DIR_NONE, tag_action, 3630 (u_int8_t *)NULL, 0, sense_len, sizeof(*scmd), timeout); 3631 scmd = (struct scsi_tape_locate *)&csio->cdb_io.cdb_bytes; 3632 bzero(scmd, sizeof(*scmd)); 3633 scmd->opcode = LOCATE; 3634 if (hardsoft) 3635 scmd->byte1 |= SA_SPOS_BT; 3636 scsi_ulto4b(blkno, scmd->blkaddr); 3637 } 3638